ES437278A1 - Positive closure system for free floating piston valve - Google Patents

Positive closure system for free floating piston valve

Info

Publication number
ES437278A1
ES437278A1 ES437278A ES437278A ES437278A1 ES 437278 A1 ES437278 A1 ES 437278A1 ES 437278 A ES437278 A ES 437278A ES 437278 A ES437278 A ES 437278A ES 437278 A1 ES437278 A1 ES 437278A1
Authority
ES
Spain
Prior art keywords
piston
valve
working chamber
control
opening
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
ES437278A
Other languages
Spanish (es)
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.)
CBS Corp
Original Assignee
Westinghouse Electric 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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of ES437278A1 publication Critical patent/ES437278A1/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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/10—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
    • F16K17/105—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve using choking or throttling means to control the fluid operation of the main valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/141—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path
    • F01D17/145—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path by means of valves, e.g. for steam turbines
    • 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
    • F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
    • F16K31/38—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side
    • F16K31/383—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side the fluid acting on a piston

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)
  • Control Of Turbines (AREA)
  • Fluid-Driven Valves (AREA)

Abstract

Improvements introduced into a free floating piston valve, comprising a housing having an inlet port or opening and an outlet port or opening, a valve piston movable within said housing between a seated position where the valve is closed and an open position, said valve being positioned during operation, such that the valve piston is essentially movable along a vertical line, the seated position of the piston being at its lower displacement end, forming the interior of said housing above said piston a piston working chamber, a communication passage being provided to allow limited circulation between said working chamber and the area below said piston, and a first control valve to connect the working chamber to a low pressure region to cause said piston valve to open and to isolate said working chamber from d said low pressure region to cause said piston valve to close, characterized by a pressure vessel connected to said control chamber that can be brought into communication by a second control valve, and by means for opening said second control valve when said first control valve is closed to feed pressurized fluid from said container to said control chamber to move the piston to its seated position. (Machine-translation by Google Translate, not legally binding)
ES437278A 1974-05-14 1975-04-30 Positive closure system for free floating piston valve Expired ES437278A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US46993074A 1974-05-14 1974-05-14

Publications (1)

Publication Number Publication Date
ES437278A1 true ES437278A1 (en) 1977-01-16

Family

ID=23865597

Family Applications (1)

Application Number Title Priority Date Filing Date
ES437278A Expired ES437278A1 (en) 1974-05-14 1975-04-30 Positive closure system for free floating piston valve

Country Status (11)

Country Link
JP (1) JPS5514946B2 (en)
BE (1) BE828992A (en)
CA (1) CA1038260A (en)
CH (1) CH594155A5 (en)
DE (1) DE2521193A1 (en)
ES (1) ES437278A1 (en)
FR (1) FR2271476B1 (en)
GB (1) GB1466838A (en)
IT (1) IT1038117B (en)
NL (1) NL7505070A (en)
SE (1) SE412103B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0687131B2 (en) * 1986-12-25 1994-11-02 富士写真フイルム株式会社 Silver halide photographic light-sensitive material
DE4320937A1 (en) * 1993-06-24 1995-01-05 Abb Management Ag Actuator for a control valve

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2127281A5 (en) * 1971-03-03 1972-10-13 Ellingsen Karl

Also Published As

Publication number Publication date
SE412103B (en) 1980-02-18
BE828992A (en) 1975-11-13
GB1466838A (en) 1977-03-09
JPS50156036A (en) 1975-12-16
IT1038117B (en) 1979-11-20
CH594155A5 (en) 1977-12-30
SE7505541L (en) 1975-11-17
DE2521193A1 (en) 1975-11-27
FR2271476B1 (en) 1980-04-11
NL7505070A (en) 1975-11-18
JPS5514946B2 (en) 1980-04-19
FR2271476A1 (en) 1975-12-12
CA1038260A (en) 1978-09-12

Similar Documents

Publication Publication Date Title
GB1460493A (en) Apparatus for securing in and for sealing a pipeline
GB1193470A (en) Apparatus for Casting Meltable Material such as Metal under Gas-Pressure and -Counterpressure
ES432371A1 (en) Dispensing pump
ES440636A1 (en) Fluid operated valve
ES437278A1 (en) Positive closure system for free floating piston valve
GB956940A (en) Apparatus for launching missiles
ES192697U (en) Device for the automatic projection of water in mining exploitations provided of progressive hydraulic entibation. (Machine-translation by Google Translate, not legally binding)
GB1532337A (en) Casting apparatus
GB1149405A (en) A pilot-operated fluid-pressure control valve
ES425179A1 (en) Diaphragm valve
ES377717A1 (en) Valve with integral closure and seat carrier unit
GB2123987B (en) A safety connection connecting a vessel containing a gas under pressure to a discharge system
DE3465134D1 (en) Control valve
US3913891A (en) Air blender for granular materials
ES8502518A1 (en) Hydraulic valve arrangement
GB1160504A (en) Improvements in or relating to Fluid Flow Control Valves.
GB1348534A (en) Diaphragm valves
ES425400A1 (en) Venting means for valves
JPS56131870A (en) Apparatus for controlling outflow of highly viscous fluid
GB1188176A (en) Pressure Vessel Inlet Valve
ES155877U (en) Valve for the passage of water (Machine-translation by Google Translate, not legally binding)
SU1010371A1 (en) Locking device
GB1488794A (en) Control valve
SU971727A1 (en) Apparatus for automatic sealing of vessel operating under pressure
GB1310230A (en) Fluid control valves