CA2173794A1 - Apparatus and Method for Testing for Valve Leaks by Differential Signature Methods - Google Patents

Apparatus and Method for Testing for Valve Leaks by Differential Signature Methods

Info

Publication number
CA2173794A1
CA2173794A1 CA 2173794 CA2173794A CA2173794A1 CA 2173794 A1 CA2173794 A1 CA 2173794A1 CA 2173794 CA2173794 CA 2173794 CA 2173794 A CA2173794 A CA 2173794A CA 2173794 A1 CA2173794 A1 CA 2173794A1
Authority
CA
Canada
Prior art keywords
valve
signatures
valve leaks
testing
leaks
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA 2173794
Other languages
French (fr)
Other versions
CA2173794C (en
Inventor
Joseph G. Dimmick
Lloyd E. Powell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Leak Detection Services Inc
Original Assignee
Leak Detection Services Inc
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 Leak Detection Services Inc filed Critical Leak Detection Services Inc
Publication of CA2173794A1 publication Critical patent/CA2173794A1/en
Application granted granted Critical
Publication of CA2173794C publication Critical patent/CA2173794C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/24—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations

Abstract

A portable computing device is used for acoustic testing of valve systems for valve leaks. Transducers are applied to appropriate locations in the valve system to obtain sound signals, which are fast Fourier transformed into valve signatures. Multiple signatures are displayed simultaneously and are compared automatically by the system to derive a recommended result and manually to make determinations of valve leaks by the differential signature method or the like. The signatures and the user's determinations are stored on a hard drive. Various panels are displayed to give the user step-by-step instructions for performing the test. Thus, training is simplified, use of paper is vastly reduced or eliminated entirely, and the results can be ported to the client's office computers.
CA 2173794 1995-04-10 1996-04-10 Apparatus and method for testing for valve leaks by differential signature methods Expired - Fee Related CA2173794C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US44953895A 1995-04-10 1995-04-10
US08/449,538 1995-04-10

Publications (2)

Publication Number Publication Date
CA2173794A1 true CA2173794A1 (en) 1996-10-11
CA2173794C CA2173794C (en) 2001-01-16

Family

ID=23784538

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2173794 Expired - Fee Related CA2173794C (en) 1995-04-10 1996-04-10 Apparatus and method for testing for valve leaks by differential signature methods

Country Status (2)

Country Link
CA (1) CA2173794C (en)
FR (1) FR2734054B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8050875B2 (en) 2006-12-26 2011-11-01 Rosemount Inc. Steam trap monitoring
US10641412B2 (en) 2012-09-28 2020-05-05 Rosemount Inc. Steam trap monitor with diagnostics
CN113740004A (en) * 2020-05-28 2021-12-03 中国石油化工股份有限公司 Valve internal leakage rate evaluation device and evaluation grade method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE19827T1 (en) * 1980-10-20 1986-05-15 Atomic Energy Authority Uk DEVICE FOR INDICATION OF CHANGES IN THE ACOUSTIC PROPERTIES OF A TRANSITION PLANE.
SU1247703A1 (en) * 1985-01-04 1986-07-30 Предприятие П/Я М-5881 Method and apparatus for detecting leakage
US5136876A (en) * 1987-01-16 1992-08-11 The Dow Chemical Company Apparatus and process for determining fluid leak rates
US5101774A (en) * 1989-08-03 1992-04-07 Westvaco Corporation Acoustic leak detection system
US5341670A (en) * 1991-12-13 1994-08-30 Atlantic Richfield Company Method and apparatus for locating seepage from tanks
DE4200245C2 (en) * 1992-01-08 1993-10-21 Rohrnetzbau Gmbh Rbg Method and device for detecting a leakage stream emerging from a surface

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8050875B2 (en) 2006-12-26 2011-11-01 Rosemount Inc. Steam trap monitoring
US10641412B2 (en) 2012-09-28 2020-05-05 Rosemount Inc. Steam trap monitor with diagnostics
CN113740004A (en) * 2020-05-28 2021-12-03 中国石油化工股份有限公司 Valve internal leakage rate evaluation device and evaluation grade method

Also Published As

Publication number Publication date
FR2734054B1 (en) 1999-06-18
CA2173794C (en) 2001-01-16
FR2734054A1 (en) 1996-11-15

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