GB2005809A - Control valve and electrical and hydraulic control system - Google Patents

Control valve and electrical and hydraulic control system

Info

Publication number
GB2005809A
GB2005809A GB7841896A GB7841896A GB2005809A GB 2005809 A GB2005809 A GB 2005809A GB 7841896 A GB7841896 A GB 7841896A GB 7841896 A GB7841896 A GB 7841896A GB 2005809 A GB2005809 A GB 2005809A
Authority
GB
United Kingdom
Prior art keywords
control valve
pilot
fluid
ports
valve 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.)
Granted
Application number
GB7841896A
Other versions
GB2005809B (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.)
NL Industries Inc
Original Assignee
NL Industries 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 NL Industries Inc filed Critical NL Industries Inc
Priority to GB7841896A priority Critical patent/GB2005809B/en
Publication of GB2005809A publication Critical patent/GB2005809A/en
Application granted granted Critical
Publication of GB2005809B publication Critical patent/GB2005809B/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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/42—Actuating devices; Operating means; Releasing devices actuated by fluid by means of electrically-actuated members in the supply or discharge conduits of the fluid motor

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrically Driven Valve-Operating Means (AREA)

Abstract

A control valve and a multiple control system therefor for controlling a plurality of remotely positioned hydraulically actuated underwater devices. The slidably movable valve member 16 is acted on by first and second equal size pilot pistons 18 and 20 supplied with operating fluid through first and second pilot ports 22 and 24 respectively, for moving the valve member to either an open or closed position. Third and fourth unequal size pilot pistons 26 and 28 supplied with operating fluid through third and fourth pilot ports 30 and 32 respectively are also operative for moving the valve member to either an open or closed position. The control valve may be operated in an electro- hydraulic control mode by the use of electrically actuated valves controlling the supply of fluid to the first and second ports 22 and 24. in addition, the control valve can be operated in a hydraulic mode by hydraulically controlling the supply of fluid to the third and fourth pilot ports 30 and 32. <IMAGE>
GB7841896A 1977-10-11 1978-10-25 Hydraulic valve and control system for controlling an underwater device Expired GB2005809B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7841896A GB2005809B (en) 1977-10-11 1978-10-25 Hydraulic valve and control system for controlling an underwater device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4231477 1977-10-11
GB7841896A GB2005809B (en) 1977-10-11 1978-10-25 Hydraulic valve and control system for controlling an underwater device

Publications (2)

Publication Number Publication Date
GB2005809A true GB2005809A (en) 1979-04-25
GB2005809B GB2005809B (en) 1982-05-12

Family

ID=26264881

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7841896A Expired GB2005809B (en) 1977-10-11 1978-10-25 Hydraulic valve and control system for controlling an underwater device

Country Status (1)

Country Link
GB (1) GB2005809B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0078261A1 (en) * 1981-05-01 1983-05-11 Vetco Gray Inc. Hydraulic control of subsea well equipment
EP0294240A2 (en) * 1987-06-04 1988-12-07 B.R. Controls Inc. Control valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0078261A1 (en) * 1981-05-01 1983-05-11 Vetco Gray Inc. Hydraulic control of subsea well equipment
EP0078261A4 (en) * 1981-05-01 1985-07-01 Vetco Offshore Ind Inc Hydraulic control of subsea well equipment.
EP0294240A2 (en) * 1987-06-04 1988-12-07 B.R. Controls Inc. Control valve
EP0294240A3 (en) * 1987-06-04 1990-06-13 B.R. Controls Inc. Control valve

Also Published As

Publication number Publication date
GB2005809B (en) 1982-05-12

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Legal Events

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

Effective date: 19951025