US1621435A - Industrial-heating elastic-fluid prime-mover installation - Google Patents

Description

March '15, 1927.

v A. oscH INDUSTRIAL HEATING ELASTIC FLUID FR ME MOVER INSTALLATION Filed NOV. 9. 1925 e m a Invent 0T Arthur" Roach, by Q Hi's Atto r'neg,

ARTHUR Resort, or criARLo'rrRNRURG,

SIG-NMENTS, 'ro GENERAL ELECTRIC coRroRArron or New YORK.

, EPATE BER-LIN, e-RRMANY, jAss Ienom-RY MESNE as! COMPANY, or SCHENEGTADY, NEW YQRI A- INDUSTRIAL-HEATING ELASTIC-FLUID PRIME-MOVER, IN-strALLArIoii.

. Ap lication filed ltloverritere, 11925, S eria1N'o.i67,792,:ai1d in Germany fi ovember25, 19 24.

The present invention relates to elasticfluid prime-mover installations arranged to i provide industrial heating elastic fluid which has performed work in the prime movers, and has for its object the'provision of an improved arrangement in an installation of this character whereby heating elastic fluid for industrial uses, such as cooking, boiling, heating and the like, is automatically provided .in conjunction with the operation of the installation while maintaining a high operating efficiency; I

For a consideration of what is believed to be novel'in the invention, attention cated at 17. In the case of the particular now directed to the accompanying drawing,

the description thereof, and the appended claims.

In the drawing, the figure is a diagram matical representation, partly in section, of an elastic-fluid prime-mover installation embodying the invention.

Referring to the drawing, 5 and 6 are elastic-fluid turbines of the multistage type supplied with elastic motive fluid through separate supply conduits 7 and 8 and admission'valve means 9 and 10 respectively. Th'eturbines represent any suitable elastic fluid prime movers adapted to supply heat- .ing elastic fluid in connection with their operationlas will hereinafter appear, and ac- :cordingly will hereinafter be referred to as elastic fluid prime movers.

In the present example, prime mover 6 is a smaller or auxiliary unit and is mounted on a common shaft 11' with prime mover 5 which is the larger or main unit of the installation. Prime mover 6 is connected at its exhaust end with a mixing condult or exhaust header 12 to which it supplies'exhaust elastic fluid at a pressure suitable for use in an industrial heating main 13 whichtaps the exhaust header at 14 to receive said exhaust elastic fluid therefrom.

Theexhaust header forms a supply source for the heating main and may be connected with heating elastic fluid supply means other than the exhaust end of the auxiliary prime'mover-to receive additional heating elastic fluid for delivery to the heating main. In the present example, it s connectedfor this purpose with the main prime mover between a high pressure section 15 and a low pressure section 16 thereof, as indiprime mover shown the exhaust header ex-1 tends through c0nnection'17 into theprime mover in the form Ofa chamber 18 which directly receives the exhaust from the'high pressure section- '15 and which is connected 2 with the lowpressure section 16 by a conduit 19. The 'low pressure section exhausts through a suitable exhaust outlet 20. "This arrangement permits the exhaust header12 supply main518 and in the pressure in supply conduit 8 of the auxiliary prime mover.

Fluctuations in pressure in the exhaust header 12 are met by a pressure regulator 21 which operates a relief va'lve22 in re sponse; to the pressure changes. The -relief valve is located in conduit 19 and controls "the admission of elastic fluid to the low ressure section 16fromchamber 18, that is, from the exl'iaustheader. In the present example, the pressure regulator is in: the

form of a cylinder in which a piston 23 moves in response to' pressure supplied be-' neath it through a pressure pipe 24 connected with'the exhaust header. This'connection is conveniently made, asshown, with chamber 18 on the admlssion slde of-valve- The piston is provided with a sliding pis ton rod 25 which is pivotallyrconnected, as

indicated at 26, =with'a'lever-27, which in turn is pivotally connected, as indicated at 28, with the sliding stem 29 of the valve 22. At 30 is a fulcrum for the lever about which it is moved by the regulator to carry the valve betw'eenthe open and closed positions Above the piston is provided ateom pressed spring lwhich serves to move .pis-

jton 23 against the pressure acting beneath it, to carrythe valve. towards the closed position; With this arrangement the low pressure section 16 receivesexcessielastie fluidfrom the exhaust header automatically,

an increase pressure-in hamber .18 a d the exhaustgheader effecting 1 an increased opening of valve22and increaseddelivery touthe low pressurev section, and a decrease in pressure. causing-a corresponding deglo creased opening and decreased delivery to offulcrum from valve 22, as indicated at 32, through a valve stem 33, so that it is moved with valve 22 in an opposite sense with'respect thereto. This provides for admitting an increased amount of elastic fluid through valve 9 as pressure regulator 21 operates to close valve 22 and vice versa, thus more quickly tending to restore normal pressure in the exhaust header. The normal pressure in theexhaust headeris determined by the strength of regulator spring 31in its relation to the piston area and may be made to provide any desired normal pressure. 7 I

Admission valve 10 for auxiliary prime mover 6 is controlled by a pressure regulator 34 which operates to maintain a substantially uniform pressure in the supply conduit 8, that is, to admit elastic fluid there from in accordance with the pressure therein. The regulator is similar in construction to regulator 21 and like regulator 21 represents any suitable pressure-responsive device'for controlling a valve. 7 Although any suitable operating connection may be provided between the regulators andtheir respective valves, in the present example they are arranged to directly move the valves, regulator 34 being connected'with valve 10 after the manner of regulator 21 withvalve 22, by a sliding valve stem 35 which is pivotally connected'at 36 with a lever 37. The

latter is in turn pivotally connected at '38 with a sliding piston rod 39 of the regulator. Piston rod 39 is connected to and moves with a sliding piston 40, to the lower side of which is supplied pressure from conduit 8, at the admissioniside ofvalve 10,by,apressure pipe 41; The piston moves in response to the pressure supplied beneath it, against a'compres'sed spring 42 to carry the valve.

1' toward the 'open' position, while the spring tends to move the piston to carry the valve to the closed position. Lever 37 moves on a fulcrum 43 which is'located along the lever in spaced relation to pivot connection 36' of valve stem 7 35 and on the opposite side" thereof with respect to pivot connection 38 of the piston roc.

This arrangement permits valve '10 to open increasingly as the pressure in supply conduit 8 tends to increase, thereby increasingthe supply of exhaust elastic'fluid to the exhaust header 12, and tomove toward the closed position as the pressure in conduit'8 decreases, thereby decreasingthe supply of V V Y mounted on a bracket 47 attached to prime exhaust elastic fluid. The elastic fluid supprime mover and exhaust header as rapidly tuations in the supply of exhaust elastic fluid to the exhaust header 12 bythe operation of regulator 34, the latter is also connected with the admission valve 9 and the relief valve 22 of the main prime mover to move said valves jointly with admission valve 10 in an opposite sense thereto,

that is, in opposite opening or closing directi'on at the same time. In'the present example, this connection is made vthrough a link 44 which is pivot-ally connected at one end with lever 37, as indicated at 45, and

which at the opposite end carries fulcrum 30 of lever 27.

Fulcrum 43 lies between the pivotal connections 36 and 45, so that'the link is moved in an opposite direction from valve 10 when the latter is actuated by the regulator-34. Since the link is connected with the fulcrum 30 of lever 27 and said lever is free to turn on pivotconnection2'6, valves 9 and 22 are moved with the link independently of the regulatorc2l in an oppositesense'with re spectv to valve 10. As valve 10 is moved to increase the admission of elasticfluid from conduit 8, valves 9 and 22 are thus correspondingly moved to decrease the admission of elastic fluid froinsupply conduit-7 and the admission of excess exhaust elastic fluid to the low pressure section, and vice versa, that is,in an opposite sense from valve 10 in each case, thereby preventing fluctuations in the pressure in exhaustheader 12 and heating main 13.

The relative lengths of lever 27 between the pivotal valve connections therewith, de-

termines the relative movements of valves 9 and 22. In the present example the valve ioo connections are substantially equally spaced f from fulcrum 30 so that valves 9'and 22 are moved substantially equally by pressure regulator 21, and valve -9 to a greater degree than valve 22 by regulator 34, although any other suitable arrangement may be provided, as the system of levers for connecting the valves and pressure regulators herein described and illustrated represents any suitable means for performing the same function and is shownonly byway of example.

7 The prime movers may be further controlled by a suitable speed governor respon sive, tor example, to the speed ofshatt 11.

whereby the power output from said shaft may be delivered at constant speed. Aspeed governor for this purpose 1S represented at 46" andli-s oi the simple fly-weight type While the governor may ablemeans, it is in the present example connected with the lever system to jointly control valves 9, 1-0 and 22. Connection with the lever system is made through a rod 49 which at one end is connected with the gover'nor and which at the opposite end carries the fulcrum 43 of lever '37 The governor operates to move the rod and fulcrum downwardly correspondingly as the speed of shaft 11 increases above acertain desired normal value and to move the rod and i'ulcrrun upwardlycorrespondingly as the speed of shaft 11 decreases be low said normal value. As the fulcrum 4:3 is carried upwardly or downwardly by the governor rod, lever 37 is moved thereby in a similar manner about pivot-connection '38 as a center independentlyof the setting of pressure regulator 3a and through connec- 'tlOIl. with lever 27 by link Mlmoves said lever correspondingly about pivot connec.

tion 26 as acenter independently of the set ting of pressure regulator 21; Valves 9 and 22 move with lever 27 and valve 10 moves with lever .37 in response to movement of the governor rod, all in the same sense with respect to each other, that is, in the same opening or closing direction at the same time, being moved in the first-named direction as the governor moves rod d9upwardly in response to a decreased speed below normal, and being moved the second-named direction as the governor moves =rod 4L9 downwardly in response to an increased speed above normal.

111 practice, auxiliaryprime mover 6 is preferably 'of the high-pressure type, and

through pressure regulator 34 operates tov deliver exhaust elastic fluid 1 continuously to the exhaust header 12 and heating main 13 while it is supplied with elastic fluid through conduit/8. Should thesupply fail, it will be seen'that valve 10 will be'closed by pressure regulator .34. while valves 9and '22 will be correspondingly opened independently of the governor 46 and'ot regulator 21. The higlr pressuresection of the main prime mover then supplies the exhaust header and heating main through connection I V Main prime mover-5 is preferably of the low-pressure; type and is arranged to auto-v matically utilize the excess elastic fluid over that required for heating purposes, in a low pressure sectionln the present example, and

is controlled. independently of the speed governor and pressure: regulator B l 'by the pressure regulator '21 which operates to prevent fluctuations in the heating supply to main 13. Under certain conditions, such as those attending a failure of the supply to the auxiliary prime mover, the main prime mover is arranged to automatically supply heating elastic fluid 'to the heating main. The arrangement in accordance with the invention further provides 'for contriol of the prime mover by other means, such as a speed governor, independently of the control exercised by the pressure regulators.

It is believed that the operation of the installation.. is clear 7 from the foregoing description and accordingly requires no further descrlpti'on. has been illustrated and described in connec*' tion with a simple elastic fluid turbine inprime mover, an auxiliary elastic fluid While the invention prime; mover, a. conduit for conveying elastic fluid exhausting from the auxiliary prime mover to the main prime mover, and

means responsive to the pressure of the elastic fluid supplied to the auxiliary prime mover for regulating the supply of elastic fluid to both prime movers.

2. In combination, a main elastic fluid prime mover, an auxiliary elastic fluid prime mover, a conduit for conveying elastic fluid exhausting from the auxiliary prime mover tothe main prime mover, a heating main connected with said conduit to receive heating elastic fluid therefrom,

and means responsive to the pressure of the elasticfluid supplied to the auxiliary. prime mover for regulatingth'e supply of elastic fluid to both prime movers.

8.:In ,combinatiom a main elastic fluid prime" mover, an auxiliary elastic fluid prime mover, a conduit for'conveying elastic fluid exhausting from the auxiliary prime mover to the main prime mover, a heating main connected with said conduit to receive heating elastic fluid therefrom,

means responsive to the pressure of theelastic fluid supplied'to the auxiliary prime mover for regulating the supply of elastic ,fluid-to both'prime movers, and means re sponsive tow the pressure in the exhaust conduit for regulating the supply of elastic fluid to themain prime mover.

a. In combination, a main elastic fluid prime mover, an auxiliary elastic fluid prime mover, a conduit for conveying elastic-fluid exhausting from the auxiliary prime mover to the main prime mover, a heating main connected with said conduit to receive heat 'ing elastic fluid therefrom, means responsive movers, a speed-responsive means for regu to the pressure of theelastic fluid supplied 7 to the auxiliary prime mover for regulating. the supply of elastic fluid to both prime fluidipressure, the first-named valve means "ing supply main, an exhaust conduit for the auxiliary 'prime mover connected with the heating supply main and with the main prime mover whereby, the latter and the "heating supply main receive exhaust elastic fluid from the auxiliaryprime mover, means responsive to the pressure of the exhaust elastic fluid controlling the admission of said elastic fluid to the main prime mover, and

speed-responsive means for controlling the admission of elastic fluid to both prime movers.- I a V v '6. In an elastic fluid prime mover installa, tion, the combination with a main prime mover having an admission valve means, of an auxiliary prime mover, a heating supply main, an exhaust conduit for the auxiliary prime mover connected with the heating supply main and with the main prime mover whereby the latter and the heating supply main receive exhaust elastic fluidthereirom,

' an admission valve means controlling the admission of said exhaust elastic fluid to the main prime mover, and a pressure-respon sive device connected with the first and second-named valve means to operate the same in response to changes in the exhaust elastic being operated thereby in an oppositesense with respect to thesecond-named valve s means. i

7. In an elastic fluid primemover installat-ion, the combination with a main prime mover having a high pressure section to which elastic motive fluid is supplied and a low pressure section which receives exhaust elastic fluid from the high pressure section,

of an auxiliary prime mover to which elastic motive fluid is supplied, an exhaust conduit for the auxiliary prime mover'connected with the low pressure section of the main prime mover'to supply exhaustelastic fluid thereto jointly with the high pressure; sec-- tion a relief valve means which controls the V e l n u v exhaust-elastic fluid admission to said low pressure section, a pres-sure regulator' for said exhaust elastic fluid connected with said reliefvalve means, a heating supply zconduit connected withthe exhaust conduit o to receive heating elastic fluid therefrom, and means responsive to the speed of at least to one of the prime movers for controlling the admission of elastic fluid to both prime movers, a a 8-. I in an elastic fluid prime mover instal- "lation, the combination with a main prime mover having a high pressure section provided with an admission valve means and a low pressure section which receives exhaust" elastic fluid from the high pressure section,

of an auxiliary prime mover to which elastic motive fluid is supplied, an exhaust conduit for the auxiliary prime mover connected with the low pressure section of themain prime mover to supply exhaust elastic fluid thereto jointly with the high pressure sec-- tion, a relief valve means which is movable to control the admission of the exhaust elas tic fluid to said low pressure section, a pressure regulator for said exhaust elastic fluid" connected with the relief valve means and with the first-named valve means, means in said connection which causes thefirst-named valve means to move in an opposite sense with respect to the relief valve means, and a heating supply conduit connected with the exhaust conduit 1; V

. 9. In an elastic fluid prime mover instal 'lation, the combination with a main prime mover having a high pressure section and a low pressure section, of an auxiliary prime mover having an exhaust conduit connected with the main prime mover between the high and low pressure sections thereof, a relief valve means which controls the admission of elastic fluid'to the low pressure section; a heatingsupply conduit connected with the exhaust conduit, separate admissionvalvev means for the prime mover-s, means responsive to the admission pressure of tlieauxiliary prime mover connected with the admission on valve means ofiboth prime. movers and with the relief valve means to jointly move the same, the relieffland admission valve means of themain prime mover being moved thereby in an opposite sense to the V admission valve means of the auxiliary prime mover, and means responsiveto the pressure atthe admission side oftherelief valve means connected with said relief valve meansand the admission valve means of the main prime mover to move said valve means j jointly, the relief valve being moved thereby in an opposite sense to said admissionvalve.

10. In an elastic fluid prime mover installation, the combination with a main prime mover having a high pressure sect-ion and a low pressuresection, of an auxiliary prime llO mover having an exhaust conduit connected i withthe main elastic fluid prime mover between the highand the low pressure sec tion thereof, a relief valve controlling-the admission of elastic fluid'to the low pressure section, a heating conduit connected with the exhaust'conduit, admission valves for the main and auxiliary prime movers; a speed-responsive rmeans connected with 1 and controlling the'relief. valveand admission valvesofhoth prime movers, said valves being moved thereby in the same sense, means'responsive to the admiss on pressure 1 'of-the auxiliary pr me mover, controlling 1 the relief valve and admission valves of both prime movers, the relief valve and admission valve of the main prime mover being moved thereby in an opposite sense to the admission valve 'of the auxiliary prime mover, and means responsive to the pressure at the admission side of the relief valve connected with said valve and the admission valve of the main prime mover to move the same in an opposite sense relative to each other and independently of the admission valve of the auxiliary prime mover.

11. In an elastic fluid prime mover installation, the combination with a main prime mover having an admission valve and a high and low pressure section, of an auxiliary prime mover having an admission conduit, an admission valve therein, and an exhaust conduit connected with the main prime mover between the high and low pressure sections thereof, a heating main connected with the exhaust conduit, a relief valve controlling the admission of elastic fluid to the low pressure section, acommon shaft on which the prime movers are mounted, a speed governor on said shaft operatively connected with the admission valves of both prime movers and with the relief valve, said governor operating to move said valves s1- multaneously and in the same sense in response to changes in speed of the shaft, a pressure-responsive means connected with the admission conduit of the auxiliary prime mover for moving the admission valve thereof simultaneously with and in an opposite sense to the admission and relief valve of I the main prime mover independently of the speed governor, and a pressure-responsive means connected withthe main prime mover I of exhaust'elastic fluid to said low pressure stages,means responsive to the pressure on the admission s1de of said valve connected therewith-to operate the same, an admission valve for the first-named turbine connected 7 with the first-named valve to be operated therewith in an opposite sense with respect thereto, an admission valve for the second named turbine, pressure-responsive means for operating said valve in accordance with the supply pressure, and means connecting the last-named admission valve with the first and second-named valves whereby they are operated jointly with and in an'opposite sense with respect to said last named admission valve, and a speed-responsive means controlling the first-named valve and the admission valves of bothturbines'independently of the pressure-responsive means.

In witness whereof, Ihave hereunto set my hand this 23d day of October, 1925.

' ARTHUR Boson.

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