FR2644869A1 - Opening device for a pressurised tank - Google Patents

Opening device for a pressurised tank Download PDF

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Publication number
FR2644869A1
FR2644869A1 FR8903694A FR8903694A FR2644869A1 FR 2644869 A1 FR2644869 A1 FR 2644869A1 FR 8903694 A FR8903694 A FR 8903694A FR 8903694 A FR8903694 A FR 8903694A FR 2644869 A1 FR2644869 A1 FR 2644869A1
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France
Prior art keywords
valve
pressure
spring
valve according
relief valve
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Granted
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FR8903694A
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French (fr)
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FR2644869B1 (en
Inventor
Jacques Rouvet
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SOCIRA
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SOCIRA
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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
    • F16K13/00—Other constructional types of cut-off apparatus; Arrangements for cutting-off
    • F16K13/04—Other constructional types of cut-off apparatus; Arrangements for cutting-off with a breakable closure member
    • F16K13/06—Other constructional types of cut-off apparatus; Arrangements for cutting-off with a breakable closure member constructed to be ruptured by an explosion
    • 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
    • F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position

Abstract

The invention relates to an opening device for a tank of pressurised fluid used in particular in fire-fighting equipment, combining the functions of a cock and of a pressure-limiting valve. The device consists of a body 5 screwed onto the base 1 forming the seat 2 of the valve element 3 which is applied by the calibrated spring 7. A piston 9 secured to the valve element 3 includes the pyrotechnic pressure generator 12 the firing of which causes the opening of the valve element which is kept open by the locking rod 14. The fluid leaves through the orifice 11. The cock according to the invention is particularly intended for equipping tanks of automatic extinguishers.

Description

Les vannes à décharge utilisées dans les systèmes d'extinction automatique sont généralement déclenchées par action mécanique, pneumatique ou électrique. The discharge valves used in automatic extinguishing systems are generally triggered by mechanical, pneumatic or electrical action.

Les agents extincteurs destinés à être libérés par l'ouverture de ces vannes sont stockés dans des réservoirs pressurisés par un gaz de chasse neutre tel que azote ou C02. The extinguishing agents intended to be released by the opening of these valves are stored in tanks pressurized by a neutral flush gas such as nitrogen or C02.

Afin d'être conforme aux règles de sécurité applicables aux appareils sous pression, ils sont équipés d'une soupape ou d'une membrane de rupture, lesquelles produisent une fuite en cas de dépassement de la pression maxi malte admissible, notamment en cas d'échauffement. In order to comply with the safety rules applicable to pressure vessels, they are fitted with a rupture valve or diaphragm, which produce a leak if the maximum permissible pressure is exceeded, in particular in the event of warming up.

La présente invention a pour objet la réalisation d'un dispositif, combinant les deux fonctions précédentes, tout en apportant une simplification de construction du produit et une réduction du crût.  The present invention relates to the production of a device, combining the two preceding functions, while providing a simplification of product construction and a reduction in the cost.

Le dispositif suivant l'invention est caractérisé en ce que le clapet de fermeture de la vanne assure également l'échappement de l'excés de pression du réservoir, il est à cette fin, appliqué sur son siège au moyen d'un ressort calibré dont la poussée équilibre la pression maximale admissible. The device according to the invention is characterized in that the closing valve of the valve also ensures the escape of excess pressure from the reservoir, it is for this purpose applied to its seat by means of a calibrated spring whose the thrust balances the maximum admissible pressure.

Un orifice d'évacuation du fluide est pratiqué dans la chambre formée par la base du clapet et l'embase. Une poussée additionnelle appliquée au piston d'un verin solidaire du clapet, à partir d'une réserve de gaz comprimé ou d'une cartouche pyrotechnique, fournit une poussée résultante, supérieure à celle du ressort laquelle ouvre le clapet, un moyen de verrouillage est formé d'une tige et d'un ressort de poussée. A fluid discharge orifice is formed in the chamber formed by the base of the valve and the base. An additional thrust applied to the piston of a jack fixed to the valve, from a reserve of compressed gas or a pyrotechnic cartridge, provides a resulting thrust, greater than that of the spring which opens the valve, a locking means is formed of a rod and a thrust spring.

Suivant une variante, la poussée additionnelle fournie par une cartouche pyrotechnique ou une réserve de gaz comprimé est appliquée directement sous le clapet, lequel est soumis à la pression existante dans la chambre d'évacuation, résultante de la pression statique de la pression dynamique produite par la mise à feu de la cartouche, et par le jet defluide à travers l'orifice d'évacuation. According to a variant, the additional thrust provided by a pyrotechnic cartridge or a reserve of compressed gas is applied directly under the valve, which is subjected to the pressure existing in the evacuation chamber, resulting from the static pressure of the dynamic pressure produced by the firing of the cartridge, and by the fluid jet through the evacuation orifice.

Les dessins annexés illustrent l'invention. The accompanying drawings illustrate the invention.

La figure 1 représente en coupe le dispositif selon l'invention. Figure 1 shows in section the device according to the invention.

La figure 2 représente en coupe une variante de ce dispositif suivant la figure 1. FIG. 2 represents in section a variant of this device according to FIG. 1.

Une embase (4 > so loaire du réservOir (4) forme

Figure img00010001

(3) muni d'un joint d'étanchéité (8).A base (4> so loaire of the reservoir (4) forms
Figure img00010001

(3) provided with a seal (8).

Le corps cylindrique (5) vissé sur l'embase (1), maintient le ressort (7) comprimé contre la base du clapet (3), le joint (8) assure l'étanchéite
Le piston (9) est rendu solidaire du clapet (3) par le goujon (17), lequel coulisse à travers la paroi (6) avec un faible jeu. Un joint (10) assure l'étanchéité du piston. The cylindrical body (5) screwed onto the base (1), keeps the spring (7) compressed against the base of the valve (3), the seal (8) ensures sealing
The piston (9) is made integral with the valve (3) by the stud (17), which slides through the wall (6) with little play. A seal (10) seals the piston.

Un orifice d'évacuation du fluide (11) est pratiqué dans le corps (5), au droit de la sortie du fluide (2), sa section est inférieure à la section de sortie (en 2) afin de produire un effet différentiel de pression, dans le volume ménagé par le déplacement du clapet. A fluid discharge orifice (11) is formed in the body (5), in line with the fluid outlet (2), its section is smaller than the outlet section (at 2) in order to produce a differential effect of pressure, in the volume formed by the movement of the valve.

Le piston (9) comporte une cartouche pyrotechnique génératrice de gaz (12) maintenue dans un bouchon fileté (13). Un dispositif de verrouillage (14) comporte une tige soumise à la pression du ressort (15) qui coulisse dans une cage (16) vissée sur le corps à la base du clapet.The piston (9) comprises a gas-generating pyrotechnic cartridge (12) held in a threaded plug (13). A locking device (14) comprises a rod subjected to the pressure of the spring (15) which slides in a cage (16) screwed onto the body at the base of the valve.

La poussée du ressort (7) est calibrée afin de compenser la pression du gaz comprimé dans le réservoir à la valeur prescrite. The spring thrust (7) is calibrated to compensate for the pressure of the compressed gas in the tank to the prescribed value.

Si un accroissement de pression supérieur à cette limite soulève le clapet, le fluide sous pression s'échappe par l'orifice d'évacuation (11).  If a pressure increase above this limit raises the valve, the pressurized fluid escapes through the discharge port (11).

L'ouverture est produite par la mise à feu de la cartouche (12), laquelle génère une pression sur le piston (3) relié au piston par le goujon (17).The opening is produced by firing the cartridge (12), which generates pressure on the piston (3) connected to the piston by the stud (17).

Le fluide libéré exerce selon une pression statique et dynamique sur la face inférieure du clapet, puis est projeté à travers l'orifice d'évacuation.The released fluid exerts a static and dynamic pressure on the underside of the valve, then is projected through the discharge orifice.

Lorsque la collerette du clapet dépasse le niveau de la tige de verrouillage (14), celle-ci, poussée par le ressort (15) passe sous le clapet afin de le maintenir en position ouvert. When the flange of the valve exceeds the level of the locking rod (14), the latter, pushed by the spring (15) passes under the valve in order to maintain it in the open position.

Dans la forme de réalisation, selon la figure 2, la cartouche pyrotechnique (12) maintenue dans le support (13) est disposée en regard du clapet (3) maintenu fermé par le ressort calibré (7). In the embodiment, according to Figure 2, the pyrotechnic cartridge (12) held in the support (13) is arranged opposite the valve (3) kept closed by the calibrated spring (7).

Selon cette variante, à l'instant du déclenchement, la face inférieure du clapet est soumis à la pression différentielle résultant des rapports de section des orifices de sortie (2) et d'évacuation (11), lesquels sont calibrés en conséquence ainsi qu'aux pressions dynamiques créées par l'inflammation de la cartouche et par le passage du fluide dans l'orifice (2). According to this variant, at the moment of triggering, the underside of the valve is subjected to the differential pressure resulting from the section ratios of the outlet orifices (2) and of the outlet (11), which are calibrated accordingly as well as to the dynamic pressures created by the ignition of the cartridge and by the passage of the fluid in the orifice (2).

Suivant une variante non représentée, le clapet peut-être de forme sphérique, sans modifier le fonctionnement de l'invention. According to a variant not shown, the valve may be spherical, without modifying the operation of the invention.

Le dispositif selon l'invention est particulièrement destiné à la mise en oeuvre d'extincteurs automatiques.  The device according to the invention is particularly intended for the use of automatic fire extinguishers.

Claims (8)

REVENDICATIONS 1) Vanne de décharge pour réserve de fluide sous pression caractérisée en ce que l'orifice de sortie est obturé par le clapet (3) appliqué sur le siège (2) au moyen du ressort (7) afin de réaliser une fonction de soupape, et qu'une fonction d'ouverture est réalisée en soumettant le dit clapet à une pression additionnelle telle que la pression résultante devienne supérieure i celle du ressort. 1) Discharge valve for pressurized fluid reserve characterized in that the outlet orifice is closed by the valve (3) applied to the seat (2) by means of the spring (7) in order to perform a valve function, and that an opening function is achieved by subjecting said valve to an additional pressure such that the resulting pressure becomes greater than that of the spring. 2) Vanne de décharge suivant la revendication caractérisée en ce que le ressort (7) est calibré à la pression maximale admissible du contenant du fluide. 2) Relief valve according to claim characterized in that the spring (7) is calibrated to the maximum allowable pressure of the fluid container. 3) Vanne de décharge suivant la revendication 1, caractérisée en ce que la poussée additionnelle est appliquée sur la surface inférieure du clapet (3) ménagée autour du siège (2). 3) Relief valve according to claim 1, characterized in that the additional thrust is applied to the lower surface of the valve (3) formed around the seat (2). 4) Vanne de décharge suivant la revendication 1, caractérisée en ce que la poussée additionnelle est produite par un verin dont le piston (9) est rendu solidaire du clapet (3) par la tige (17). 4) Relief valve according to claim 1, characterized in that the additional thrust is produced by a jack whose piston (9) is made integral with the valve (3) by the rod (17). 5) Vanne de décharge suivant la revendication 1, caractérisée en ce que la section du siège (2) de orifice de sortie est inférieure à la section du clapet (3) afin que la pression exercé sur celui-ci, dès la libération du fluide soit amplifié par le différentiel des sections. 5) relief valve according to claim 1, characterized in that the section of the seat (2) of the outlet orifice is less than the section of the valve (3) so that the pressure exerted on it, upon release of the fluid is amplified by the differential of the sections. 6) Vanne à décharge suivant les revendications 1 à 3, caractérisée en ce que la pression additionnelle d'ouverture est produite par une réserve de fluide sous pression. 6) Relief valve according to claims 1 to 3, characterized in that the additional opening pressure is produced by a reserve of pressurized fluid. 7) Vanne à décharge suivant les revendications 1 à 3, caractérisée en ce que la pression additionnelle est produite par l'inflammation d'un dispositif pyrotechnique ou l'application d'une pression de fluide. 7) Discharge valve according to claims 1 to 3, characterized in that the additional pressure is produced by the ignition of a pyrotechnic device or the application of a fluid pressure. 8) Vanne à décharge suivant les revendications 1 à 4, caractérisée en ce que le clapet (3) est maintenu en position ouvert par une tige (14), poussée par un ressort (15) contre sa face inférieure.  8) relief valve according to claims 1 to 4, characterized in that the valve (3) is held in the open position by a rod (14), pushed by a spring (15) against its underside.
FR8903694A 1989-03-21 1989-03-21 OPENING DEVICE FOR PRESSURE TANK Expired - Fee Related FR2644869B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8903694A FR2644869B1 (en) 1989-03-21 1989-03-21 OPENING DEVICE FOR PRESSURE TANK

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8903694A FR2644869B1 (en) 1989-03-21 1989-03-21 OPENING DEVICE FOR PRESSURE TANK

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FR2644869A1 true FR2644869A1 (en) 1990-09-28
FR2644869B1 FR2644869B1 (en) 1992-07-24

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0753694A1 (en) * 1995-07-14 1997-01-15 Honeywell Lucifer Sa Electric actuated pyrotechnical valve
FR2795477A1 (en) * 1999-06-24 2000-12-29 Giat Ind Sa Relief valve for fuel tank comprises flap, closing orifice communicating tank inside to outside, held closed by spring resting on support which can be retracted by piston
FR2944848A1 (en) * 2009-04-24 2010-10-29 Gaz De Petrole Stop valve for stopping gas supply from gas installation during e.g. leak, has ratchet stroked on side opposite to finger by piston in housing, where housing has pyrotechnic load and igniter connected to control circuit to disengage finger
CN103486306A (en) * 2013-07-24 2014-01-01 中国兵器工业第二一三研究所 Smoke-fire actuating cylinder for nuclear power safety valve and laser welding method thereof
CN104121250A (en) * 2013-12-07 2014-10-29 东风柳州汽车有限公司 Single-action telescopic multi-stage oil cylinder

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106931209A (en) * 2017-04-18 2017-07-07 山西新思备科技股份有限公司 Aerogenesis is pulled pin quick opener

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2392009A (en) * 1944-06-08 1946-01-01 Stern Charles Safety pressure relief valve
US3757810A (en) * 1972-01-11 1973-09-11 C B F System Inc Shear valve and frangible fitting
FR2305668A1 (en) * 1975-03-27 1976-10-22 Miyairi Valve Mfg Co Ltd Low pressure gas tank valve - has relief valve with sealing disc urged onto seat by spring bearing on hollow threaded plug
DE3731662A1 (en) * 1987-09-20 1989-04-06 Sempell Rhein Armaturen Safety valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2392009A (en) * 1944-06-08 1946-01-01 Stern Charles Safety pressure relief valve
US3757810A (en) * 1972-01-11 1973-09-11 C B F System Inc Shear valve and frangible fitting
FR2305668A1 (en) * 1975-03-27 1976-10-22 Miyairi Valve Mfg Co Ltd Low pressure gas tank valve - has relief valve with sealing disc urged onto seat by spring bearing on hollow threaded plug
DE3731662A1 (en) * 1987-09-20 1989-04-06 Sempell Rhein Armaturen Safety valve

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0753694A1 (en) * 1995-07-14 1997-01-15 Honeywell Lucifer Sa Electric actuated pyrotechnical valve
CH689839A5 (en) * 1995-07-14 1999-12-15 Parker Lucifer Sa electrically controllable valve.
FR2795477A1 (en) * 1999-06-24 2000-12-29 Giat Ind Sa Relief valve for fuel tank comprises flap, closing orifice communicating tank inside to outside, held closed by spring resting on support which can be retracted by piston
WO2001001026A1 (en) * 1999-06-24 2001-01-04 Giat Industries Relief valve
US6412512B1 (en) * 1999-06-24 2002-07-02 Giat Industries Pressure control valve
FR2944848A1 (en) * 2009-04-24 2010-10-29 Gaz De Petrole Stop valve for stopping gas supply from gas installation during e.g. leak, has ratchet stroked on side opposite to finger by piston in housing, where housing has pyrotechnic load and igniter connected to control circuit to disengage finger
CN103486306A (en) * 2013-07-24 2014-01-01 中国兵器工业第二一三研究所 Smoke-fire actuating cylinder for nuclear power safety valve and laser welding method thereof
CN104121250A (en) * 2013-12-07 2014-10-29 东风柳州汽车有限公司 Single-action telescopic multi-stage oil cylinder

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FR2644869B1 (en) 1992-07-24

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