GB2095407B - Valve status indicator - Google Patents

Valve status indicator

Info

Publication number
GB2095407B
GB2095407B GB8109130A GB8109130A GB2095407B GB 2095407 B GB2095407 B GB 2095407B GB 8109130 A GB8109130 A GB 8109130A GB 8109130 A GB8109130 A GB 8109130A GB 2095407 B GB2095407 B GB 2095407B
Authority
GB
United Kingdom
Prior art keywords
valve
coil
closed
status indicator
closure member
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
Application number
GB8109130A
Other versions
GB2095407A (en
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.)
Ferranti International PLC
Original Assignee
Ferranti PLC
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 Ferranti PLC filed Critical Ferranti PLC
Priority to GB8109130A priority Critical patent/GB2095407B/en
Priority to DE19823209361 priority patent/DE3209361A1/en
Priority to FR8204685A priority patent/FR2502734A1/en
Priority to NO820949A priority patent/NO820949L/en
Publication of GB2095407A publication Critical patent/GB2095407A/en
Application granted granted Critical
Publication of GB2095407B publication Critical patent/GB2095407B/en
Expired 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • 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

Abstract

A valve status indicator for indicating that a gate valve is completely open (or completely closed) to permit the passage of a solid pipeline tool through it, consists of a pick up coil wound on a land formed in the valve body. The coil is positioned near a body face 13 along which an element 12, connected to the valve closure member slides so as to form part of the magnetically permeable core of the coil when the valve is nearly open (or closed). An air gap between a shoulder 12' of the element and the land 16 varies with the position of the closure member and consequential changes in the reactance of the coil, in which an alternating current flows, indicate the extent to which the valve fully opens (or closed). <IMAGE>
GB8109130A 1981-03-24 1981-03-24 Valve status indicator Expired GB2095407B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB8109130A GB2095407B (en) 1981-03-24 1981-03-24 Valve status indicator
DE19823209361 DE3209361A1 (en) 1981-03-24 1982-03-15 DEVICE FOR DISPLAYING THE POSITION OF A VALVE
FR8204685A FR2502734A1 (en) 1981-03-24 1982-03-19 VALVE STATUS INDICATOR
NO820949A NO820949L (en) 1981-03-24 1982-03-23 VALVE INDICATOR.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8109130A GB2095407B (en) 1981-03-24 1981-03-24 Valve status indicator

Publications (2)

Publication Number Publication Date
GB2095407A GB2095407A (en) 1982-09-29
GB2095407B true GB2095407B (en) 1984-10-17

Family

ID=10520601

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8109130A Expired GB2095407B (en) 1981-03-24 1981-03-24 Valve status indicator

Country Status (4)

Country Link
DE (1) DE3209361A1 (en)
FR (1) FR2502734A1 (en)
GB (1) GB2095407B (en)
NO (1) NO820949L (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8319550D0 (en) * 1983-07-20 1983-08-24 Grange Packing Ltd Seal wear indicator
US4777979A (en) * 1987-11-16 1988-10-18 Westinghouse Electric Corp. Position detector for clapper of non-return valve
US4953590A (en) * 1988-04-22 1990-09-04 Tokyo Keiki Company Ltd. Electromagnetic directional control valve
DE3824852A1 (en) * 1988-07-21 1990-01-25 Friedrich Bersch METHOD AND DEVICE FOR CLEANING PIPELINES
US5193568A (en) * 1991-06-20 1993-03-16 Martin Marietta Energy Systems, Inc. Noninvasive valve monitor using alternating electromagnetic field
US5471138A (en) * 1993-02-23 1995-11-28 Glass, Iii; Samuel W. Inductive valve motion sensor for positioning outside the body of the valve
US5320123A (en) * 1993-05-24 1994-06-14 Honeywell Inc. Valve with dynamic function checking capability
DE19830667C2 (en) * 1998-07-09 2002-10-31 Daimler Chrysler Ag Device for determining the opening and closing times of a gas exchange valve
DE10041914A1 (en) * 2000-08-25 2002-03-07 Man Nutzfahrzeuge Ag Electropneumatic actuator for vehicle differential lock has valve arrangement directly at actuator location, position sensor providing piston end position signals to bayonet connector

Also Published As

Publication number Publication date
DE3209361A1 (en) 1982-12-02
GB2095407A (en) 1982-09-29
FR2502734A1 (en) 1982-10-01
NO820949L (en) 1982-09-27

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee