WO2005015135A3 - Piezocable based sensor for measuring unsteady pressures inside a pipe - Google Patents

Piezocable based sensor for measuring unsteady pressures inside a pipe Download PDF

Info

Publication number
WO2005015135A3
WO2005015135A3 PCT/US2004/025771 US2004025771W WO2005015135A3 WO 2005015135 A3 WO2005015135 A3 WO 2005015135A3 US 2004025771 W US2004025771 W US 2004025771W WO 2005015135 A3 WO2005015135 A3 WO 2005015135A3
Authority
WO
WIPO (PCT)
Prior art keywords
pipe
cable
piezocable
piezoelectric material
based sensor
Prior art date
Application number
PCT/US2004/025771
Other languages
French (fr)
Other versions
WO2005015135A2 (en
Inventor
Thomas W Engel
Original Assignee
Cidra Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cidra Corp filed Critical Cidra Corp
Priority to CA2537800A priority Critical patent/CA2537800C/en
Publication of WO2005015135A2 publication Critical patent/WO2005015135A2/en
Publication of WO2005015135A3 publication Critical patent/WO2005015135A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/662—Constructional details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/666—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters by detecting noise and sounds generated by the flowing fluid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/704—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter
    • G01F1/708—Measuring the time taken to traverse a fixed distance
    • G01F1/7082—Measuring the time taken to traverse a fixed distance using acoustic detecting arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/704—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter
    • G01F1/708—Measuring the time taken to traverse a fixed distance
    • G01F1/712—Measuring the time taken to traverse a fixed distance using auto-correlation or cross-correlation detection means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G01N9/002—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity using variation of the resonant frequency of an element vibrating in contact with the material submitted to analysis
    • G01N2009/006—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity using variation of the resonant frequency of an element vibrating in contact with the material submitted to analysis vibrating tube, tuning fork

Abstract

A piezocable based sensor for measuring unsteady pressures inside a pipe comprises a cable wrapped around the pipe and an outer band compressing the cable towards the pipe. The cable provides a signal indicative of unsteady pressure within the pipe in response to expansion and contraction of the pipe. The cable includes: a first electrical conductor, a piezoelectric material disposed around the first electrical conductor, a second electrical conductor disposed around the piezoelectric material, and an insulative jacket surrounding the piezoelectric material and electrical conductors. The cable may be part of an array of cables wrapped around the pipe, and a signal processor may determine a parameter of the fluid using the signals. A housing is disposed around the pipe and electrical components associated with the pipe. Ends of the housing include a sealing arrangement, which provides a seal between the ends of the housing and the pipe.
PCT/US2004/025771 2003-08-08 2004-08-09 Piezocable based sensor for measuring unsteady pressures inside a pipe WO2005015135A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2537800A CA2537800C (en) 2003-08-08 2004-08-09 Piezocable based sensor for measuring unsteady pressures inside a pipe

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US49383003P 2003-08-08 2003-08-08
US60/493,830 2003-08-08
US52996003P 2003-12-15 2003-12-15
US60/529,960 2003-12-15

Publications (2)

Publication Number Publication Date
WO2005015135A2 WO2005015135A2 (en) 2005-02-17
WO2005015135A3 true WO2005015135A3 (en) 2005-05-19

Family

ID=34138775

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/025771 WO2005015135A2 (en) 2003-08-08 2004-08-09 Piezocable based sensor for measuring unsteady pressures inside a pipe

Country Status (3)

Country Link
US (1) US7308820B2 (en)
CA (1) CA2537800C (en)
WO (1) WO2005015135A2 (en)

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Also Published As

Publication number Publication date
US20050072216A1 (en) 2005-04-07
WO2005015135A2 (en) 2005-02-17
CA2537800A1 (en) 2005-02-17
US7308820B2 (en) 2007-12-18
CA2537800C (en) 2013-02-19

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