CN102620272A - Solar steam heat collecting system and heating control method thereof - Google Patents
Solar steam heat collecting system and heating control method thereof Download PDFInfo
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- CN102620272A CN102620272A CN2012100875042A CN201210087504A CN102620272A CN 102620272 A CN102620272 A CN 102620272A CN 2012100875042 A CN2012100875042 A CN 2012100875042A CN 201210087504 A CN201210087504 A CN 201210087504A CN 102620272 A CN102620272 A CN 102620272A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
Abstract
The invention discloses a solar steam heat collecting system and a heating control method thereof. The solar steam heat collecting system comprises a vacuum heat collecting tube device, a frequency conversion high frequency electric boiler, a numerical control computer controlling device and a water pretreatment device, wherein the vacuum heat collecting tube device, the frequency conversion high frequency electric boiler and the water pretreatment device are communicated with one another, the numerical control computer controlling device controls operations of the vacuum heat collecting tube device, the water pretreatment device and the frequency conversion high frequency electric boiler, the vacuum heat collecting tube device comprises a large gap vacuum heat collecting tube part and a Z-shaped connect tube part, the large gap vacuum heat collecting tube part comprises a large gap vacuum heat collecting tube and a U-shaped heat exchanger tube with fins, and a vacuum insulating layer of the large gap vacuum heat collecting tube is over 10 times thicker than an outer tube of the large gap vacuum heat collecting tube. The heating control method includes starting up, sampling circularly, controlling an implementation according to sampling results, and shutting down. The solar steam heat collecting system and the heating control method thereof have the advantages of being high in heat collecting temperature, good in thermal insulation effect, high in conversion and use ratio of the heat energy, reasonable in structure, high in cost-performance ratio and the like.
Description
Technical field
The present invention relates to a kind of solar energy steam collecting system and method for heating and controlling thereof.
Background technology
The energy is the primary key element of human social development; Along with the quick growth of global population and the extremely speed development of modern industry; Energy supply and demand contradiction becomes increasingly conspicuous, and massive discharge of pollutant in human excessive resource exploitation and the use has badly influenced the natural environment that we depend on for existence; So seek the great attention that green, environmental protection, regenerative resource cause countries in the world already.
Solar energy is as the research and development of new sources of energy utilization; Scientist from the nineteen fifties countries in the world; With regard to heat energy and the thermal power transfer that how to absorb the sun, carried out a large amount of exploratory developments, the success of the eighties vacuum heat-collecting technology is that condition has been created in the utilization of solar energy.But mostly vacuous solar energy steam collecting system of the prior art is the cryogenic vacuum heat collector, just utilizes solar energy to people some domestic hot-waters to be provided, and effective rate of utilization is low; Can't be the industrial and agricultural production service (utilizing solar energy that high-temperature vapour is provided) that needs high temperature heat in a large number at all; Though have the focusing high temperature heat collection device in energy conversion, to use, go because of product structure, mounting condition and its cost of investment can't promote the use of in the industrial and agricultural production that needs energy-saving and emission-reduction in a large number.
Summary of the invention
Technical problem to be solved by this invention is to overcome existing above-mentioned deficiency in the prior art; First technical problem to be solved is; Through the improvement of vacuum heat collection pipe and thermal-arrest sports association collection, thereby make solar energy steam collecting system be in the hot operation state, through the low-voltage vacuum hot swapping; Realize directly utilizing solar heat to produce high-temperature vapour and be the industrial and agricultural production service, make solar energy really become the green novel energy source of alternative mineral ability.Another problem to be solved by this invention is through changing the method for heating and controlling of solar energy steam collecting system; Thereby improve the firing rate and the efficient of solar energy steam collecting system and electric boiler, improve better electric boiler safety in utilization and service life simultaneously.
The present invention solves the technical scheme that above-mentioned first technical problem adopts: this solar energy steam collecting system; Comprise vacuum heat-collecting pipe unit, frequency conversion high-frequency electrical boiler, digital control computer control device and water pretreatment equipment; Vacuum heat-collecting pipe unit, frequency conversion high-frequency electrical boiler, water pretreatment equipment are through the mutual UNICOM of connecting pipeline; Digital control computer control device and vacuum tube heat collector, water pretreatment equipment, frequency conversion high-frequency electrical boiler all are electrically connected and control the operation of vacuum tube heat collector, water pretreatment equipment, frequency conversion high-frequency electrical boiler; It is characterized in that said vacuum heat-collecting pipe unit is made up of big space vacuum heat-collecting duct member and Z type union pipe parts; Big space vacuum heat-collecting duct member is made up of big space vacuum heat collection pipe and finned U type heat-exchange tube, and Z type union pipe parts are made up of the soft shell that connects or connect firmly Z font pipe fitting and band heat-insulation layer.The vacuum heat-preserving layer thickness of said big space vacuum heat collection pipe is outer more than ten times of tube thickness of big space vacuum heat collection pipe.
Water pretreatment equipment according to the invention comprises water softener, heat storage water tank, pipeline, escape pipe, hot-water circulation pipe; Said digital control computer control device comprises computer controller, water injection manifold metered valve, air outlet valve, the first hot water circuit valve, the second hot water circuit valve, first emptying valve, second emptying valve, water compensating valve, power-supply system, first water injecting pump, second water injecting pump, drain pump, thermal-collecting tube temperature sensor, cistern water level sensor, water tank temperature sensor, heater water tank; The thermal-collecting tube temperature sensor is installed in Z type union pipe knockdown export end; Cistern water level sensor, water tank temperature sensor are installed in the heat storage water tank; Water inlet UNICOM to the second water injecting pump delivery port of water injection manifold metered valve, the first hot water circuit valve; The second water injecting pump water inlet and heat storage water tank UNICOM; Water injection manifold metered valve, the first hot water circuit valve delivery port and vacuum tube heat collector one end UNICOM, vacuum tube heat collector one end and drain pump water inlet UNICOM, drain pump delivery port and first emptying valve water inlet UNICOM; First emptying valve delivery port and heat storage water tank UNICOM; The vacuum tube heat collector other end is equipped with second emptying valve, is connected with the hot-water circulation pipe between the vacuum tube heat collector other end and the heat storage water tank, and the second hot water circuit valve is installed on the hot-water circulation pipe; Pass through escape pipe UNICOM between the vacuum tube heat collector other end and the frequency conversion high-frequency electrical boiler; Air outlet valve is installed on the escape pipe, on the connecting pipeline between water softener and the heat storage water tank water compensating valve is installed, on the connecting pipeline between frequency conversion high-frequency electrical boiler and the digital control computer control device first water injecting pump is installed; Heater water tank is installed in the heat storage water tank; Computer controller and the power-supply system controller that is electrically connected to form, controller all is electrically connected with water injection manifold metered valve, air outlet valve, the first hot water circuit valve, the second hot water circuit valve, first emptying valve, second emptying valve, water compensating valve, second water injecting pump, drain pump, thermal-collecting tube temperature sensor, cistern water level sensor, water tank temperature sensor, heater water tank and frequency conversion high-frequency electrical boiler, is provided with signal amplifier in the computer controller; The input of signal amplifier is electrically connected with the TEMP appearance; Be provided with frequency modulator in the power-supply system, the output of signal amplifier is electrically connected with the frequency modulator input, and the output of frequency modulator is electrically connected with induction heater.
Frequency conversion high-frequency electrical boiler according to the invention comprises radio-frequency generator, fluid level controller, electro connecting pressure gauge, TEMP appearance, gas and water separator, electric boiler body of heater and induction heater; Gas and water separator is through connecting pipeline and electric boiler body of heater UNICOM; Radio-frequency generator, fluid level controller, electro connecting pressure gauge, TEMP appearance, gas and water separator and induction heater are installed in the electric boiler body of heater; Radio-frequency generator, electro connecting pressure gauge, TEMP appearance and induction heater all are electrically connected with controller, and fluid level controller is electrically connected with first water injecting pump.
Digital control computer control device of the present invention also is provided with thermal-collecting tube second temperature sensor, and thermal-collecting tube second temperature sensor is installed in the middle part or the middle and upper part of vacuum tube heat collector, and thermal-collecting tube second temperature sensor is electrically connected with controller.
Digital control computer control device of the present invention also is provided with display unit, and display unit is electrically connected with controller.
The present invention solves above-mentioned second technical scheme that technical problem adopted: a kind of control method of solar energy steam collecting system comprises start; Circulating sampling is also carried out according to sampled result control; Shutdown; It is characterized in that said circulating sampling and control execution in step may further comprise the steps: digital control computer control device image data according to sampled result; When the temperature of thermal-collecting tube temperature sensor collection reached the circulating temperature of setting, the water in the digital control computer control device control heat storage water tank heated up through the circulation of vacuum tube heat collector; When the temperature of thermal-collecting tube temperature sensor collection reached the preheat temperature of setting, the water in the digital control computer control device control heat storage water tank stopped circulation; When the temperature of thermal-collecting tube temperature sensor collection reached the feed air temperature of setting, the steam in the digital control computer control device control vacuum tube heat collector was sent into steam boiler through frequency conversion high-frequency electrical boiler and is supplied the user to use; When the temperature of steam in the electric boiler body of heater of TEMP appearance collection changed the steam temperature scope that exceeds setting, the digital control computer control device was regulated flow automatically, constant air outlet temperature; When the pressure in the electric boiler body of heater that electro connecting pressure gauge is gathered during, the size of current that digital control computer control device control induction heater starts and regulate induction heater, heat through electric boiler and to realize continuous air feed less than the supply gas pressure set; When the water level of the heat storage water tank of cistern water level sensor acquisition is lower than the water tank moisturizing water level of setting, the control of digital control computer control device is carried out moisturizing to heat storage water tank; When the water level of the heat storage water tank of cistern water level sensor acquisition reaches the water tank upper limit water level of setting, the digital control computer control device stops the moisturizing of heat storage water tank; When the temperature of solar energy heat collection pipe temperature sensor collection drops to below 130 degrees centigrade and be higher than the water temperature in the heat storage water tank of water tank temperature sensor acquisition; The digital control computer control device starts frequency conversion high-frequency electrical boiler at full capacity and guarantees air feed, utilizes solar energy with the circulation of the water in heat storage water tank heating simultaneously; When the temperature of gathering when the thermal-collecting tube temperature sensor was identical with the heat storage water tank water temperature of water tank temperature sensor acquisition, the digital control computer control device was sent the water in the vacuum tube heat collector into heat storage water tank, and the realization waste heat makes full use of; Revolution control computer controller image data step.
Circulating temperature according to the invention is 70～95 degrees centigrade, and preheat temperature is 95 degrees centigrade, and feed air temperature is 140 degrees centigrade, and the steam temperature scope is 140 degrees centigrade～170 degrees centigrade, and supply gas pressure is between 0.2～0,8 MPas.
Digital control computer control device of the present invention also is provided with thermal-collecting tube second temperature sensor; Thermal-collecting tube second temperature sensor is installed in the middle part or the middle and upper part of vacuum tube heat collector; When the temperature difference of while thermal-collecting tube temperature sensor and thermal-collecting tube second temperature sensor in the steam temperature scope that the temperature of steam in the electric boiler body of heater of TEMP appearance collection is being set reaches the design temperature difference; Carry out the adjusting of injection flow valve flow amount according to the temperature extent; Reach the purpose of regulating in advance, make system more stable.
The present invention compared with prior art has the following advantages and effect: 1, the full glass vacuum heat collection pipe in big space has improved heat-collecting temperature and heat insulation effect, and the thermal power transfer utilization rate reaches more than 90%; 2, manufacturing process is simple, scientific structure design is reasonable, and the product superiority of effectiveness is remarkable, with existing solar energy steam heat collector ratio, can reduce investment and reach more than 50%; 3, whole-course automation control has realized the combination of solar energy and steam boiler, makes solar energy really become operational green novel energy source; 4, overall structure is simple, easy for installation, does not receive the geographical climate environment condition restriction, for the industrial and agricultural production big power consumer carries out the energy-saving and emission-reduction technological transformation, a kind of economy, safe and reliable Green Product is provided.
Description of drawings
Fig. 1 is the overall structure sketch map of the embodiment of the invention.
Fig. 2 is the structure and the annexation sketch map of embodiment of the invention vacuum tube heat collector.
Fig. 3 is the structural representation of the big space of embodiment of the invention vacuum heat-collecting duct member.
Fig. 4 analyses and observe enlarged diagram for the A-A of big space shown in Figure 3 vacuum heat collection pipe.
Fig. 5 is the structure and the annexation sketch map of embodiment of the invention frequency conversion high-frequency electrical boiler.
Fig. 6 is the structure and the annexation sketch map of embodiment of the invention water pretreatment equipment.
Fig. 7 is the circuit theory sketch map of the embodiment of the invention.
Fig. 8 executes the frequency conversion electric current principle sketch map of example for the present invention.
The specific embodiment
Referring to Fig. 1～Fig. 8; Embodiment of the invention solar energy steam collecting system; Mainly form by vacuum tube heat collector I, frequency conversion high-frequency electrical boiler II, digital control computer control device III and water pretreatment equipment IV; Vacuum tube heat collector I, water pretreatment equipment IV, frequency conversion high-frequency electrical boiler II are through the mutual UNICOM of connecting pipeline; Digital control computer control device III and vacuum tube heat collector I, water pretreatment equipment IV, frequency conversion high-frequency electrical boiler II all are electrically connected and control the operation of vacuum tube heat collector I, water pretreatment equipment IV, frequency conversion high-frequency electrical boiler II; Vacuum tube heat collector I can be installed in sun-drenched roofing, metope or spacious ground, and all the other equipment are installed in indoor.
Vacuum tube heat collector I is made up of big space vacuum heat-collecting duct member I-1 and Z type union pipe parts I-2; Big space vacuum heat-collecting duct member I-1 is made up of big space vacuum heat collection pipe 1 and finned U type heat-exchange tube 2, and Z type union pipe parts I-2 is by taking over 3, being with the outer cover 8 of heat-insulation layer to form.(D is the thickness of big space vacuum heat collection pipe 1 outer tube to L>=10*D to vacuum heat-insulating layer 4 thickness of the big space of present embodiment vacuum heat collection pipe 1 (the diametric distance in edge between big space vacuum heat collection pipe 1 outer tube and the interior pipe); Down together; Referring to Fig. 4); This improvement make when heat-collecting temperature (referring to the temperature in the U type heat-exchange tube 2) when reaching 250 ℃ of high temperature big space vacuum heat collection pipe 1 outer tube surface temperature still remain on the normal temperature state (in environment temperature ± 2 ℃; The heat-collecting heat-preserving space thickness of existing vacuum tube usually≤2*D; The thermal-collecting tube surface temperature reaches 38 ℃ usually when heat-collecting temperature reaches 130 ℃, and high temperature efficient obviously descends), (solar energy leans on the area harvest energy through Z type union pipe parts I-2 big space vacuum heat collection pipe 1 trail to be become huge solar energy heating body; Have only enough big collector area just available steam can be provided); Through digital control computer control device III, the high-temperature-hot-water in the heat storage water tank 25 to be injected vacuum tube heat collector I carry out ebullition, gasification, this moment, high-temperature vapour then flowed out from escape pipe 12.
Frequency conversion high-frequency electrical boiler II comprises radio-frequency generator 13, fluid level controller 14, electro connecting pressure gauge 15, TEMP appearance 16, gas and water separator 17, electric boiler body of heater 18 (for the stainless steel body of heater of band lagging casing) and induction heater 19.Gas and water separator 17 is through connecting pipeline and electric boiler shell 18 UNICOMs, and radio-frequency generator 13, fluid level controller 14, electro connecting pressure gauge 15, TEMP appearance 16, gas and water separator 17 and induction heater 19 are installed in the electric boiler body of heater 18.Water pretreatment equipment IV comprises water softener 23, heat storage water tank 25, pipeline 34, escape pipe 12, the hot-water circulation pipe 11 of tape tree fat exchanger.Water pretreatment equipment IV can adopt existing techniques in realizing.
Digital control computer control device III comprises computer controller 20, water injection manifold metered valve 27, air outlet valve 10, the first hot water circuit valve 28, the second hot water circuit valve 9, first emptying valve 29, second emptying valve 33, water compensating valve 22, power-supply system 21, first water injecting pump 24, second water injecting pump 26, drain pump 30, thermal-collecting tube temperature sensor 5, cistern water level sensor 31, water tank temperature sensor 32, display unit 35 and heater water tank 36, and display unit 35 can adopt display or indicator lamp.Thermal-collecting tube temperature sensor 5 is installed in the port of export of Z type union pipe parts I-2; Cistern water level sensor 31 is installed in the heat storage water tank 25; Water inlet UNICOM to the second water injecting pump 26 delivery ports of water injection manifold metered valve 27, the first hot water circuit valve 28, second water injecting pump, 26 water inlets and heat storage water tank 25 UNICOMs, water injection manifold metered valve 27, the first hot water circuit valve, 28 delivery ports and vacuum tube heat collector I one end UNICOM; Vacuum tube heat collector I one end and drain pump 30 water inlet UNICOMs; Drain pump 30 delivery ports and first emptying valve 29 water inlet UNICOMs, first emptying valve 29 delivery ports and heat storage water tank 25 UNICOMs, the vacuum tube heat collector I other end is equipped with second emptying valve 33; Be connected with hot-water circulation pipe 11 between the vacuum tube heat collector I other end and the heat storage water tank 25; The second hot water circuit valve 9 is installed in (near the position of vacuum tube heat collector I) on the hot-water circulation pipe 11, through escape pipe 12 UNICOMs, air outlet valve 10 is installed on the escape pipe 12 between the vacuum tube heat collector I other end and the frequency conversion high-frequency electrical boiler II; On the connecting pipeline between water softener 23 and the heat storage water tank 25 water compensating valve 22 is installed; On the connecting pipeline between frequency conversion high-frequency electrical boiler II and the digital control computer control device III first water injecting pump 24 is installed, fluid level controller 14 is electrically connected with first water injecting pump 24 and is used for controlling automatically the water level in the electric boiler, and the water level in electric boiler body of heater 18 is lower than fluid level controller 14 and adds water level and put; First water injecting pump 24 is opened, and electric boiler is carried out moisturizing; Water level in electric boiler body of heater 18 is higher than fluid level controller 14 and stops to add water level and put, and first water injecting pump 24 cuts out, and stops the water that adds of electric boiler.Heater water tank 36 is installed in the heat storage water tank 25, and the water temperature in heat storage water tank 25 is lower, when needing heating, can start heater water tank 36.Computer controller 20 and power-supply system 21 controller that is electrically connected to form, radio-frequency generator 13, electro connecting pressure gauge 15, TEMP appearance 16 and the induction heater 19 of controller and water injection manifold metered valve 27, air outlet valve 10, the first hot water circuit valve 28, the second hot water circuit valve 9, first emptying valve 29, second emptying valve 33, water compensating valve 22, first water injecting pump 24, second water injecting pump 26, drain pump 30, thermal-collecting tube temperature sensor 5, cistern water level sensor 31, water tank temperature sensor 32, display unit 35 and frequency conversion high-frequency electrical boiler II all are electrically connected.Be provided with signal amplifier 20-1 in the computer controller 20; Signal amplifier 20-1 input is electrically connected with TEMP appearance 16; Be provided with frequency modulator 21-1 in the power-supply system 21, the output of signal amplifier 20-1 is electrically connected with frequency modulator 21-1 input, and the output of frequency modulator 21-1 is electrically connected with induction heater 19; The size of adjustment output current produces and replenishes the energy and the technique effect of saving the energy.Digital control computer control device III is delivered to required control terminal with signal according to operational order and the information that collects after the via controller information processing, realizes control automatically.Digital control computer control device III can adopt existing techniques in realizing, and with duty on display unit 35.
The method for heating and controlling of the embodiment of the invention is: start (opening system power supply); Circulating sampling is also carried out according to sampled result control; Shutdown (shutdown system power supply).Said circulating sampling also may further comprise the steps according to sampled result control execution in step: digital control computer control device III image data (gathering the data of thermal-collecting tube temperature sensor 5, fluid level controller 14, electro connecting pressure gauge 15, TEMP appearance 16, cistern water level sensor 31, water tank temperature sensor 32); The temperature of gathering when thermal-collecting tube temperature sensor 5 reaches that (said reaching refers to that temperature rises to from low level; Down with) during the circulating temperature set (special case is 70～95 degrees centigrade); Digital control computer control device III is controlled the first hot water circuit valve 28, the second hot water circuit valve 9, second water injecting pump 26 and is started, and the water in the heat storage water tank 25 heats up through the circulation of vacuum tube heat collector I; When the temperature of gathering when thermal-collecting tube temperature sensor 5 is higher than the preheat temperature of setting (special case is 95 degrees centigrade), digital control computer control device III is controlled the first hot water circuit valve 28, the second hot water circuit valve 9, second water injecting pump 26 and is closed; When the temperature of gathering when thermal-collecting tube temperature sensor 5 reaches the feed air temperature of setting (special case is 140 degrees centigrade); The a large amount of ebullition, gasifications of water in the vacuum tube heat collector I become steam; Digital control computer control device III control air outlet valve 10 is opened; Steam is sent into steam boiler through the electric boiler body of heater 18 of frequency conversion high-frequency electrical boiler II with gas and water separator 17 and is supplied the user to use, and digital control computer control device III control water injection manifold metered valve 27, second water injecting pump 26 start simultaneously; When the temperature of steam in the electric boiler body of heater 18 that TEMP appearance 16 is gathered changes the steam temperature scope (special case is 140 degrees centigrade～170 degrees centigrade) that exceeds setting; Digital control computer control device III is regulated vacuum tube heat collector I flow of inlet water, constant air outlet temperature automatically through water injection manifold metered valve 27; When the pressure in the electric boiler body of heater 18 that electro connecting pressure gauge 15 is gathered during less than the supply gas pressure (special case is in 0.2～0,8 MPas) set; Digital control computer control device III is controlled the size of current that induction heater 19 starts and regulate induction heater 19, heats through electric boiler and realizes continuous air feed; The water level of the heat storage water tank of gathering when cistern water level sensor 31 25 is lower than the water tank moisturizing water level of setting, and digital control computer control device III control water compensating valve 22 is opened, and heat storage water tank 25 is carried out moisturizing; The water level of the heat storage water tank of gathering when cistern water level sensor 31 25 reaches the water tank upper limit water level of setting, and digital control computer control device III control water compensating valve 22 is closed, and stops the moisturizing of heat storage water tank 25; When temperature (from being higher than 130 degrees centigrade) that thermal-collecting tube temperature sensor 5 is gathered drops to below 130 degrees centigrade and be higher than the water temperature the heat storage water tank 25 that water tank temperature sensor 32 gathers; Digital control computer control device III control water injection manifold metered valve 27, air outlet valve 10 are closed; The first hot water circuit valve 28, the second hot water circuit valve 9, second water injecting pump 26 start; Start frequency conversion high-frequency electrical boiler II heating air feed at full capacity, utilize solar energy simultaneously the circulation of the water in the heat storage water tank 25 heating; When heat storage water tank 25 water temperatures that the temperature of gathering when thermal-collecting tube temperature sensor 5 and water tank temperature sensor 32 are gathered were identical, digital control computer control device III was controlled hot water cyclesystem and is stopped heat exchange (promptly closing the first hot water circuit valve 28, the second hot water circuit valve 9, second water injecting pump 26); First emptying valve 29, second emptying valve 33 are opened, and drain pump 30 is sent the water in the vacuum tube heat collector I into heat storage water tank 25, realize that waste heat makes full use of, and close first emptying valve 29, second emptying valve 33, drain pump 30 then; Forward digital control computer control device III image data (data of thermal-collecting tube temperature sensor 5, fluid level controller 14, electro connecting pressure gauge 15, TEMP appearance 16, cistern water level sensor 31, water tank temperature sensor 32) step to; The circulation that goes round and begins again is carried out, and realizes unmanned management.Embodiment of the invention circulating sampling also can executed in parallel according to executory some step of sampled result control, and that condition satisfies promptly carries out that step operation.
Need to prove that Fig. 1 is the sketch map of present embodiment, actual use should be carried out assembled arrangement according to the real needs vapor volume through calculating.Under the bigger situation of vacuum heat-collecting area; Digital control computer control device III also can be provided with a thermal-collecting tube second temperature sensor 37; Thermal-collecting tube second temperature sensor 37 is installed in the middle part or the middle and upper part of vacuum tube heat collector I; Thermal-collecting tube second temperature sensor 37 is used for gathering the temperature of vacuum tube heat collector I middle part or middle and upper part; When the temperature difference of while thermal-collecting tube temperature sensor 5 and thermal-collecting tube second temperature sensor 37 in the steam temperature scope that the temperature of steam in the electric boiler body of heater 18 that TEMP appearance 16 is gathered is being set reaches design temperature poor (20 degrees centigrade of special cases); (for example 5 degrees centigrade of water injection manifold metered valves of the every rising of temperature difference 27 strengthen lattice, are equivalent to the valve angle and strengthen 5%, and 5 degrees centigrade of water injection manifold metered valves 27 of the every decline of temperature difference reduce lattice to carry out the adjusting of water injection manifold metered valve 27 flows according to the temperature extent; It is constant that temperature difference is lower than 20 degrees centigrade of water injection manifold metered valves 27); Benefit is to carry out the regulation and control of water injection manifold metered valve 27 in advance, guarantees the stable operation of frequency conversion high-frequency electrical boiler II, avoids Fraquent start.
The simple deformation of technical characterictic of the present invention or technical scheme and combination should be thought to fall into protection scope of the present invention.
Claims (8)
1. solar energy steam collecting system; Comprise vacuum heat-collecting pipe unit, frequency conversion high-frequency electrical boiler, digital control computer control device and water pretreatment equipment; Vacuum heat-collecting pipe unit, frequency conversion high-frequency electrical boiler, water pretreatment equipment are through the mutual UNICOM of connecting pipeline; Digital control computer control device and vacuum tube heat collector, water pretreatment equipment, frequency conversion high-frequency electrical boiler all are electrically connected and control the operation of vacuum tube heat collector, water pretreatment equipment, frequency conversion high-frequency electrical boiler; It is characterized in that: said vacuum heat-collecting pipe unit is made up of big space vacuum heat-collecting duct member and Z type union pipe parts; Big space vacuum heat-collecting duct member is made up of big space vacuum heat collection pipe and finned U type heat-exchange tube, and the vacuum heat-preserving layer thickness of said big space vacuum heat collection pipe is outer more than ten times of tube thickness of big space vacuum heat collection pipe.
2. solar energy steam collecting system according to claim 1; It is characterized in that: said water pretreatment equipment comprises water softener, heat storage water tank, pipeline, escape pipe, hot-water circulation pipe; Said digital control computer control device comprises computer controller, water injection manifold metered valve, air outlet valve, the first hot water circuit valve, the second hot water circuit valve, first emptying valve, second emptying valve, water compensating valve, power-supply system, first water injecting pump, second water injecting pump, drain pump, thermal-collecting tube temperature sensor, cistern water level sensor, water tank temperature sensor, heater water tank; The thermal-collecting tube temperature sensor is installed in Z type union pipe knockdown export end; Cistern water level sensor, water tank temperature sensor are installed in the heat storage water tank; Water inlet UNICOM to the second water injecting pump delivery port of water injection manifold metered valve, the first hot water circuit valve, the second water injecting pump water inlet and heat storage water tank UNICOM, water injection manifold metered valve, the first hot water circuit valve delivery port and vacuum tube heat collector one end UNICOM; Vacuum tube heat collector one end and drain pump water inlet UNICOM; Drain pump delivery port and first emptying valve water inlet UNICOM, first emptying valve delivery port and heat storage water tank UNICOM, the vacuum tube heat collector other end is equipped with second emptying valve; Be connected with the hot-water circulation pipe between the vacuum tube heat collector other end and the heat storage water tank; The second hot water circuit valve is installed on the hot-water circulation pipe, through escape pipe UNICOM, air outlet valve is installed on the escape pipe between the vacuum tube heat collector other end and the frequency conversion high-frequency electrical boiler; On the connecting pipeline between water softener and the heat storage water tank water compensating valve is installed; On the connecting pipeline between frequency conversion high-frequency electrical boiler and the digital control computer control device first water injecting pump is installed, heater water tank is installed in the heat storage water tank, computer controller and the power-supply system controller that is electrically connected to form; Controller all is electrically connected with water injection manifold metered valve, air outlet valve, the first hot water circuit valve, the second hot water circuit valve, first emptying valve, second emptying valve, water compensating valve, second water injecting pump, drain pump, thermal-collecting tube temperature sensor, cistern water level sensor, water tank temperature sensor, heater water tank and frequency conversion high-frequency electrical boiler; Be provided with signal amplifier in the computer controller, the input of signal amplifier is electrically connected with the TEMP appearance, is provided with frequency modulator in the power-supply system; The output of signal amplifier is electrically connected with the frequency modulator input, and the output of frequency modulator is electrically connected with induction heater.
3. solar energy steam collecting system according to claim 2; It is characterized in that: said frequency conversion high-frequency electrical boiler comprises radio-frequency generator, fluid level controller, electro connecting pressure gauge, TEMP appearance, gas and water separator, electric boiler body of heater and induction heater; Gas and water separator is through connecting pipeline and electric boiler body of heater UNICOM; Radio-frequency generator, fluid level controller, electro connecting pressure gauge, TEMP appearance, gas and water separator and induction heater are installed in the electric boiler body of heater; Radio-frequency generator, electro connecting pressure gauge, TEMP appearance and induction heater all are electrically connected with controller, and fluid level controller is electrically connected with first water injecting pump.
4. solar energy steam collecting system according to claim 3; It is characterized in that: the digital control computer control device also is provided with thermal-collecting tube second temperature sensor; Thermal-collecting tube second temperature sensor is installed in the middle part or the middle and upper part of vacuum tube heat collector, and thermal-collecting tube second temperature sensor is electrically connected with controller.
5. solar energy steam collecting system according to claim 3, it is characterized in that: the digital control computer control device also is provided with display unit, and display unit is electrically connected with controller.
6. the method for heating and controlling of the described solar energy steam of the arbitrary claim of claim 3～5 collecting system comprises start; Circulating sampling is also carried out according to sampled result control; Shutdown; It is characterized in that: said circulating sampling also may further comprise the steps according to sampled result control execution in step: digital control computer control device image data; When the temperature of thermal-collecting tube temperature sensor collection reached the circulating temperature of setting, the water in the digital control computer control device control heat storage water tank heated up through the circulation of vacuum tube heat collector; When the temperature of thermal-collecting tube temperature sensor collection reached the preheat temperature of setting, the water in the digital control computer control device control heat storage water tank stopped circulation; When the temperature of thermal-collecting tube temperature sensor collection reached the feed air temperature of setting, the steam in the digital control computer control device control vacuum tube heat collector was sent into steam boiler through frequency conversion high-frequency electrical boiler and is supplied the user to use; When the temperature of steam in the electric boiler body of heater of TEMP appearance collection changed the steam temperature scope that exceeds setting, the digital control computer control device was regulated flow automatically, constant air outlet temperature; When the pressure in the electric boiler body of heater that electro connecting pressure gauge is gathered during, the size of current that digital control computer control device control induction heater starts and regulate induction heater, heat through electric boiler and to realize continuous air feed less than the supply gas pressure set; When the water level of the heat storage water tank of cistern water level sensor acquisition is lower than the water tank moisturizing water level of setting, the control of digital control computer control device is carried out moisturizing to heat storage water tank; When the water level of the heat storage water tank of cistern water level sensor acquisition reaches the water tank upper limit water level of setting, the digital control computer control device stops the moisturizing of heat storage water tank; When the temperature of solar energy heat collection pipe temperature sensor collection drops to below 130 degrees centigrade and be higher than the water temperature in the heat storage water tank of water tank temperature sensor acquisition; The digital control computer control device starts frequency conversion high-frequency electrical boiler at full capacity and guarantees air feed, utilizes solar energy with the circulation of the water in heat storage water tank heating simultaneously; When the temperature of gathering when the thermal-collecting tube temperature sensor was identical with the heat storage water tank water temperature of water tank temperature sensor acquisition, the digital control computer control device was sent the water in the vacuum tube heat collector into heat storage water tank, and the realization waste heat makes full use of; Revolution control computer controller image data step.
7. according to the method for heating and controlling of the said solar energy steam of claim 6 collecting system; It is characterized in that: said circulating temperature is 70～95 degrees centigrade; Preheat temperature is 95 degrees centigrade; Feed air temperature is 140 degrees centigrade, and the steam temperature scope is 140 degrees centigrade～170 degrees centigrade, and supply gas pressure is between 0.2～0,8 MPas.
8. according to the method for heating and controlling of the said solar energy steam of claim 6 collecting system; It is characterized in that: when the temperature difference of while thermal-collecting tube temperature sensor and thermal-collecting tube second temperature sensor in the steam temperature scope that the temperature of steam in the electric boiler body of heater of TEMP appearance collection is being set reaches the design temperature difference, carry out the adjusting of injection flow valve flow amount according to the temperature extent.
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| CN102620272B (en) | 2014-07-30 |
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Effective date of registration: 20160302 Address after: 3, 201811, building 204, 6899 Liu Xiang Road, Huating Town, Shanghai, Jiading District Patentee after: Pacific Energy Technology (Shanghai) Co., Ltd. Address before: 1, unit 401, 53 Kaiyuan street, Tonglu County, Zhejiang, Hangzhou 311500 Patentee before: Wang Jinju |