FR2388187A1 - RETURN SPRING SAFETY VALVE - Google Patents

RETURN SPRING SAFETY VALVE

Info

Publication number
FR2388187A1
FR2388187A1 FR7812106A FR7812106A FR2388187A1 FR 2388187 A1 FR2388187 A1 FR 2388187A1 FR 7812106 A FR7812106 A FR 7812106A FR 7812106 A FR7812106 A FR 7812106A FR 2388187 A1 FR2388187 A1 FR 2388187A1
Authority
FR
France
Prior art keywords
valve
compressed air
chamber
lacking
return spring
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
FR7812106A
Other languages
French (fr)
Other versions
FR2388187B1 (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.)
Bopp and Reuther GmbH
Original Assignee
Bopp and Reuther GmbH
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 Bopp and Reuther GmbH filed Critical Bopp and Reuther GmbH
Publication of FR2388187A1 publication Critical patent/FR2388187A1/en
Application granted granted Critical
Publication of FR2388187B1 publication Critical patent/FR2388187B1/fr
Granted 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
    • F16K17/168—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side combined with manually-controlled valves, e.g. a valve combined with a safety valve
    • 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
    • F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)
  • Actuator (AREA)
  • Fluid-Driven Valves (AREA)

Abstract

L'invention permet d'ouvrir et de fermer en temps utile, la soupape, même lorsque l'air comprimé utilisé pour la sécurité fait defaut. Le cylindre pneumatique 1 contient deux pistons flottants 6 et 7 coulissant l'un dans l'autre. La source d'air comprimé fournit à la chambre 8 l'air de surcharge maintenant la soupape fermée (côté gauche de la figure) et à la chambre annulaire 10 l'air de levage agissant lors d'une surpression dans le réseau à surveiller qui détend l'air comprimé de la chambre 8 en favorisant l'ouverture de la soupape. Lorsque l'air comprimé fait défaut dans les chambres 8 et 10 (côté droit de la figure) le ressort 22 écarte les pistons en libérant la tige de soupape 27. Cette soupape s'applique surtout à la surveillance des circuits sous faible pression de fluide.The invention makes it possible to open and close the valve in good time, even when the compressed air used for safety is lacking. The pneumatic cylinder 1 contains two floating pistons 6 and 7 sliding one inside the other. The compressed air source supplies the chamber 8 with the overload air keeping the valve closed (left side of the figure) and to the annular chamber 10 the lifting air acting during an overpressure in the network to be monitored which expands the compressed air in chamber 8 by promoting the opening of the valve. When the compressed air is lacking in the chambers 8 and 10 (right side of the figure) the spring 22 separates the pistons by releasing the valve stem 27. This valve is mainly applicable to the monitoring of circuits under low fluid pressure. .

FR7812106A 1977-04-22 1978-04-18 RETURN SPRING SAFETY VALVE Granted FR2388187A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2717860A DE2717860C3 (en) 1977-04-22 1977-04-22 Spring-loaded safety valve

Publications (2)

Publication Number Publication Date
FR2388187A1 true FR2388187A1 (en) 1978-11-17
FR2388187B1 FR2388187B1 (en) 1982-09-17

Family

ID=6006972

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7812106A Granted FR2388187A1 (en) 1977-04-22 1978-04-18 RETURN SPRING SAFETY VALVE

Country Status (4)

Country Link
DE (1) DE2717860C3 (en)
FR (1) FR2388187A1 (en)
GB (1) GB1601084A (en)
IT (1) IT1097054B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118329B (en) * 1982-04-08 1985-12-18 Leonard William Lamburn Improved pneumatically assisted relief or safety valve
DE3518750A1 (en) * 1984-06-12 1985-12-12 Otto Tuchenhagen GmbH & Co KG, 2059 Büchen Spring-loaded safety valve
US4572237A (en) * 1984-08-10 1986-02-25 Value Oriented Technology Inc. Function assist control for pressure relief valve
DE3926847A1 (en) * 1989-08-15 1991-02-21 Hauhinco Maschf Hydraulic control valve for water hydraulics - involves two=part valve body with plunger and sleeve
EP1108934A1 (en) * 1999-12-16 2001-06-20 Techspace Aero S.A. Actuating drive for a safety valve

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2635627A (en) * 1948-06-03 1953-04-21 Standard Oil Dev Co Auxiliary operated pressure relief valve
FR1561787A (en) * 1967-05-10 1969-03-28
DE1650613A1 (en) * 1967-11-04 1972-03-02 Zikesch Gmbh C H Safety valve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2635627A (en) * 1948-06-03 1953-04-21 Standard Oil Dev Co Auxiliary operated pressure relief valve
FR1561787A (en) * 1967-05-10 1969-03-28
DE1650613A1 (en) * 1967-11-04 1972-03-02 Zikesch Gmbh C H Safety valve

Also Published As

Publication number Publication date
FR2388187B1 (en) 1982-09-17
DE2717860B2 (en) 1979-03-15
IT1097054B (en) 1985-08-26
DE2717860A1 (en) 1978-10-26
IT7822133A0 (en) 1978-04-10
GB1601084A (en) 1981-10-21
DE2717860C3 (en) 1982-05-19

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Legal Events

Date Code Title Description
ST Notification of lapse