CA1321261C - Systeme d'essai de clapets de retenue - Google Patents

Systeme d'essai de clapets de retenue

Info

Publication number
CA1321261C
CA1321261C CA000550493A CA550493A CA1321261C CA 1321261 C CA1321261 C CA 1321261C CA 000550493 A CA000550493 A CA 000550493A CA 550493 A CA550493 A CA 550493A CA 1321261 C CA1321261 C CA 1321261C
Authority
CA
Canada
Prior art keywords
check valve
sound wave
time
signal
directing
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.)
Expired - Fee Related
Application number
CA000550493A
Other languages
English (en)
Inventor
Steven Nafziger
John A. Mcmennamy
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.)
Movats Inc
Original Assignee
Movats 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 Movats Inc filed Critical Movats Inc
Application granted granted Critical
Publication of CA1321261C publication Critical patent/CA1321261C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0025—Electrical or magnetic means
    • F16K37/0041—Electrical or magnetic means for measuring valve parameters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/06—Systems determining the position data of a target
    • G01S15/08—Systems for measuring distance only
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Check Valves (AREA)
CA000550493A 1986-10-29 1987-10-28 Systeme d'essai de clapets de retenue Expired - Fee Related CA1321261C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US92483786A 1986-10-29 1986-10-29
US924,837 1986-10-29

Publications (1)

Publication Number Publication Date
CA1321261C true CA1321261C (fr) 1993-08-10

Family

ID=25450808

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000550493A Expired - Fee Related CA1321261C (fr) 1986-10-29 1987-10-28 Systeme d'essai de clapets de retenue

Country Status (5)

Country Link
EP (1) EP0288521A4 (fr)
JP (1) JPH07109254B2 (fr)
CA (1) CA1321261C (fr)
ES (1) ES2005421A6 (fr)
WO (1) WO1988003241A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8677682B2 (en) 2012-01-06 2014-03-25 Le Groupe Dsd Inc. Thin wall sap collecting device

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5008841B1 (en) * 1989-07-28 1995-09-19 Liberty Technologies Inc Non-invasive system and method for inspection of valves
US5140263A (en) * 1990-04-20 1992-08-18 Liberty Technology Center, Inc. System for determining position of an internal, movable conductive element
US5086273A (en) * 1990-04-20 1992-02-04 Liberty Technology Center, Inc. A.C. electromagnetic system for determining position of an encased movable electrically conductive element
ES2071238T3 (es) * 1990-12-06 1995-06-16 B & W Nuclear Technologies Inc Control de valvulas de retencion.
US5257545A (en) * 1990-12-06 1993-11-02 B&W Nuclear Service Company Method and apparatus to monitor check valves
US5115672A (en) * 1991-02-11 1992-05-26 Westinghouse Electric Corp. System and method for valve monitoring using pipe-mounted ultrasonic transducers
GB2356048A (en) * 1999-08-18 2001-05-09 Peter Edward Sharp Acoustic on-line condition monitoring of a machine part
EP3748210B1 (fr) * 2019-06-07 2023-01-04 Focus-On V.O.F. Organe d'arrêt pour un fluide

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1525720A (en) * 1975-12-20 1978-09-20 Univ Cardiff Distance measuring apparatus
JPS5689072A (en) * 1979-12-21 1981-07-20 Matsushita Electric Ind Co Ltd Ultrasonic distance measuring apparatus
FR2478255A1 (fr) * 1980-03-11 1981-09-18 Electricite De France Dispositif de detection par ultrasons de fermeture d'un clapet
JPS56147978A (en) * 1980-04-17 1981-11-17 Hitachi Ltd Diagnostics for accident of check valve with valve operating device
GB2112936B (en) * 1982-01-04 1985-02-13 Froude Eng Ltd Measuring the speed of a piston engine ultrasonically
DE3276775D1 (en) * 1982-03-30 1987-08-20 Martin Reuter Installation for determining a relative distance in a cylinder and piston device
US4543649A (en) * 1983-10-17 1985-09-24 Teknar, Inc. System for ultrasonically detecting the relative position of a moveable device
GB8334394D0 (en) * 1983-12-23 1984-02-01 Czajowski S B Electrical circuits
JPS60236078A (ja) * 1984-05-10 1985-11-22 Nagano Denki Kk 障害物距離検出装置
JPH0646478A (ja) * 1992-07-24 1994-02-18 Nec Corp 通信制御方式
JPH0689783A (ja) * 1992-09-09 1994-03-29 Toshiba Lighting & Technol Corp 照明器具

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8677682B2 (en) 2012-01-06 2014-03-25 Le Groupe Dsd Inc. Thin wall sap collecting device

Also Published As

Publication number Publication date
ES2005421A6 (es) 1989-03-01
JPH07109254B2 (ja) 1995-11-22
JPH01501085A (ja) 1989-04-13
EP0288521A4 (en) 1991-09-11
WO1988003241A1 (fr) 1988-05-05
EP0288521A1 (fr) 1988-11-02

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Legal Events

Date Code Title Description
MKLA Lapsed