FR2423703A1 - - Google Patents

Info

Publication number
FR2423703A1
FR2423703A1 FR7909603A FR7909603A FR2423703A1 FR 2423703 A1 FR2423703 A1 FR 2423703A1 FR 7909603 A FR7909603 A FR 7909603A FR 7909603 A FR7909603 A FR 7909603A FR 2423703 A1 FR2423703 A1 FR 2423703A1
Authority
FR
France
Prior art keywords
face
bore
piston
control rod
slides
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
FR7909603A
Other languages
French (fr)
Other versions
FR2423703B1 (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.)
Boeing North American Inc
Original Assignee
Rockwell International 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 Rockwell International Corp filed Critical Rockwell International Corp
Publication of FR2423703A1 publication Critical patent/FR2423703A1/fr
Application granted granted Critical
Publication of FR2423703B1 publication Critical patent/FR2423703B1/fr
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1447—Pistons; Piston to piston rod assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
    • 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
    • F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • 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
    • F16K47/00—Means in valves for absorbing fluid energy

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Actuator (AREA)
  • Fluid-Driven Valves (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

L'invention concerne un dispositif limiteur de force pour une tige de commande utilisée dans un mécanisme de commande de vanne dans lequel un fluide hydraulique est appliqué et extrait sélectivement d'un vérin 64 sur une face 74 d'un piston 66 dont l'autre face 104 subit la pression du gaz d'un accumulateur. Le piston comporte un alésage cylindrique 70 dont le diamètre est réduit pour former une ouverture 72 dans laquelle coulisse la tige de commande 76. Une tête de piston 82 est fixée à l'extrémité de la tige 76, à l'intérieur de l'alésage cylindrique et coulisse en contact étanche avec l'intérieur de cet alésage. Ce dernier communique avec l'atmosphère qui est aussi appliquée sur la seconde face 106 de la tête de piston 82. La force maximale de traction sur la tige de commande 76 est ainsi limitée L'invention s'applique notamment à un mécanisme de commande de vanne de circuit de distribution d'eau ou de vapeur.The invention relates to a force limiting device for a control rod used in a valve control mechanism in which hydraulic fluid is selectively applied and withdrawn from a cylinder 64 on one face 74 of a piston 66 of which the other. face 104 is subjected to the gas pressure of an accumulator. The piston has a cylindrical bore 70 whose diameter is reduced to form an opening 72 in which the control rod 76 slides. A piston head 82 is fixed to the end of the rod 76, inside the bore. cylindrical and slides in sealed contact with the interior of this bore. The latter communicates with the atmosphere which is also applied to the second face 106 of the piston head 82. The maximum tensile force on the control rod 76 is thus limited The invention applies in particular to a control mechanism. water or steam distribution circuit valve.

FR7909603A 1978-04-17 1979-04-17 Expired FR2423703B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US89723878A 1978-04-17 1978-04-17

Publications (2)

Publication Number Publication Date
FR2423703A1 true FR2423703A1 (en) 1979-11-16
FR2423703B1 FR2423703B1 (en) 1984-03-23

Family

ID=25407597

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7909603A Expired FR2423703B1 (en) 1978-04-17 1979-04-17

Country Status (12)

Country Link
JP (1) JPS54140220A (en)
AU (1) AU538319B2 (en)
BE (1) BE875611A (en)
CA (1) CA1104467A (en)
CH (1) CH642728A5 (en)
DE (1) DE2915505A1 (en)
ES (1) ES479646A1 (en)
FR (1) FR2423703B1 (en)
GB (1) GB2018895B (en)
IT (1) IT1119723B (en)
NL (1) NL7902821A (en)
SE (1) SE440128B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4568058A (en) * 1985-07-01 1986-02-04 Joy Manufacturing Company Dual stage hydraulic actuator for expanding gate valve
US4585207A (en) * 1985-09-03 1986-04-29 Joy Manufacturing Company Expanding gate valve with pneumatic actuator
CN108980144B (en) * 2018-08-07 2020-03-17 浙江赛渤电力科技有限公司 Cylinder of splash-proof effect
CN110805642A (en) * 2019-11-18 2020-02-18 航宇救生装备有限公司 Large-load grading buffering load-reducing device
CN112695724B (en) * 2020-12-14 2022-06-10 国网福建省电力有限公司 Hydraulic supporting mechanism of ship lift

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2329044A (en) * 1941-08-13 1943-09-07 Hugo C Gollmer Dual cylinder
US2478811A (en) * 1947-05-19 1949-08-09 W K M Company Inc Power-operated gate valve
FR971370A (en) * 1940-04-16 1951-01-16 Installation for remote control of a gate valve using pressurized fluid

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2302430A1 (en) * 1975-02-26 1976-09-24 Milhyroux Sarl Ets R Multiple position linear actuator - has cylinder housing intermediate hollow piston in turn housing independent piston

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR971370A (en) * 1940-04-16 1951-01-16 Installation for remote control of a gate valve using pressurized fluid
US2329044A (en) * 1941-08-13 1943-09-07 Hugo C Gollmer Dual cylinder
US2478811A (en) * 1947-05-19 1949-08-09 W K M Company Inc Power-operated gate valve

Also Published As

Publication number Publication date
DE2915505A1 (en) 1979-10-25
BE875611A (en) 1979-08-16
GB2018895B (en) 1982-09-15
CA1104467A (en) 1981-07-07
ES479646A1 (en) 1980-01-01
JPS54140220A (en) 1979-10-31
GB2018895A (en) 1979-10-24
CH642728A5 (en) 1984-04-30
SE7903242L (en) 1979-10-18
NL7902821A (en) 1979-10-19
IT1119723B (en) 1986-03-10
AU538319B2 (en) 1984-08-09
IT7921836A0 (en) 1979-04-13
FR2423703B1 (en) 1984-03-23
SE440128B (en) 1985-07-15
AU4558679A (en) 1979-10-25
JPS6134583B2 (en) 1986-08-08
DE2915505C2 (en) 1990-01-04

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse