FR2626649A1 - Thermal trigger for opening a valve, provided with a double safety feature - Google Patents

Thermal trigger for opening a valve, provided with a double safety feature Download PDF

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Publication number
FR2626649A1
FR2626649A1 FR8801263A FR8801263A FR2626649A1 FR 2626649 A1 FR2626649 A1 FR 2626649A1 FR 8801263 A FR8801263 A FR 8801263A FR 8801263 A FR8801263 A FR 8801263A FR 2626649 A1 FR2626649 A1 FR 2626649A1
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France
Prior art keywords
bulb
base
valve
bearing
temperature
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
FR8801263A
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French (fr)
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FR2626649B1 (en
Inventor
Jean-Claude Lanore
Jean-Paul Levoir
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GPMS GIE
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GPMS GIE
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Priority to FR8801263A priority Critical patent/FR2626649B1/en
Publication of FR2626649A1 publication Critical patent/FR2626649A1/en
Application granted granted Critical
Publication of FR2626649B1 publication Critical patent/FR2626649B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C37/00—Control of fire-fighting equipment
    • A62C37/08—Control of fire-fighting equipment comprising an outlet device containing a sensor, or itself being the sensor, i.e. self-contained sprinklers
    • A62C37/10—Releasing means, e.g. electrically released
    • A62C37/11—Releasing means, e.g. electrically released heat-sensitive
    • A62C37/14—Releasing means, e.g. electrically released heat-sensitive with frangible vessels
    • 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
    • F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
    • F16K17/383—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature the valve comprising fusible, softening or meltable elements, e.g. used as link, blocking element, seal, closure plug

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

Abstract

The invention relates to a thermal trigger with a Spinkler bulb combining two triggering means enhancing safety with respect to the risks on the one hand of the bulb not being sealed, and on the other hand, of it breaking. It implements a "Spinkler" bulb serving as a support for a shutter for closing a valve and bearing, for its part, on a base which can be screwed into a caliper attached by the valve head and is characterized in that the said screwable base consists of a material which is flexible to a temperature close to the explosion temperature of the bulb, with the result that if, for any reason, the bulb should not explode at the anticipated temperature, the fusion of its support base will nevertheless allow the shutter to be released and drainage, therefore operation of the extinguisher, to take place. Applications: installations, tanks, pipelines used in firefighting, extinguishers, and generally all devices or installations for which a thermal trigger with a Spinkler bulb is used.

Description

La présente invention est du domaine de la sécurité vis-a-vis des risques d'incendie et elle a pour objet un déclencheur thermique associant deux moyens de déclenchement. The present invention is in the field of safety vis-à-vis fire risks and its subject is a thermal trip device associating two trip means.

On connaît les déclencheurs thermiques d'ouverture de vanne utilisant une ampoule explo- sive sous l'effet d'une pression interne libérée par échauffement, dite ampoule "Sprinkler" ; l'ampoule sert d'appui à un clapet de fermeture d'une vanne et s'appuie elle-même sur une embase vissable dans un étrier supporté par la tête de vanne.Lorsque, en cas d'incendie* l'ampoule explose sous l'effet de la pression interne développée par l'évaporation d'un liquide contenu, l'appui du clapet cesse et le clapet est expulsé par la pression B"un fluide d'extinction. i;a vanne peut être montée sur une conduite ou un réservoir de fluide extincteur par exemple d'eau, de poudre extinctrice, de gaz carbonique, etc...Cette disposition de sécurité, qui a largement fait les preuves de son efficacité comporte cependant deux inconvénients. Un premier inconvénient est lié au fait que si pour une raison quelconque, l'ampoule n'est pas étanche et qu'elle laisse échapper, meAme a débit infime, le liquide qu'elle contient, au bout d'un certain temps qui peut être de plusieurs années, l'ampoule ne contient plus de liquide et ne peut plus de ce fait exploser en cas d'échauffement et remplir son rôle de sécurité.Un deuxième inconvénient réside dans le fait que l'ampoule en verre, donc relativement fragile, est disposée entre deux parties métalliques qui font appui sur elle ; il en résulte qu'un montage maladroit de l'ampoule entre le clapet et l'embase, par exemple un vissage trop fort de l'embase, peut entraîner le bris de l'ampoule.  We know the thermal valve opening triggers using an explosive bulb under the effect of an internal pressure released by heating, called "Sprinkler" bulb; the bulb serves as a support for a valve closing a valve and itself rests on a base screwed into a bracket supported by the valve head. When, in case of fire * the bulb explodes under the effect of the internal pressure developed by the evaporation of a contained liquid, the support of the valve ceases and the valve is expelled by pressure B "an extinguishing fluid. i; a valve can be mounted on a pipe or a reservoir of extinguishing fluid, for example water, extinguishing powder, carbon dioxide, etc. This safety arrangement, which has largely proven its effectiveness, however has two drawbacks. A first drawback is linked to the fact that if for some reason, the bulb is not waterproof and that it lets escape, even at a tiny flow rate, the liquid that it contains, after a certain time which can be several years, the ampoule no longer contains liquid and can therefore no longer explode in the event of heating and fill up s security role. A second drawback lies in the fact that the glass bulb, therefore relatively fragile, is placed between two metal parts which bear on it; it follows that an awkward fitting of the bulb between the valve and the base, for example too strong screwing of the base, can cause the bulb to break.

La présente invention propose des dispositions permettant d'éviter les deux inconvénients précités mais principalement le premier inconvénient qui met en cause la sécurité. The present invention proposes provisions making it possible to avoid the two aforementioned drawbacks but mainly the first drawback which jeopardizes safety.

Suivant une disposition principale de la présente invention 1 l'embase vissable est consti- tuée par un matériau fusible à une température voisine de la température d'explosion de l'ampoule, par exemple et pour fixer les idées, à la température de 3504 + 50 ; le matériau fusible constitutif de l'embase peut être un alliage fusible, il peut être encore une matière organique cristallisée ou encore un composite d'une résine et d'une charge métallique ce matériau constitutif de 11 embase devra donc avoir finalement la qualité suivante . être suffisamment dur et compact pour ne pas se déformer ou se briser lors du vissage et ne pas se déformer au fil du temps sous l'appui de l'ampoule, et avoir une plage de fusion relativement courte et bien définie. Il résulte de cette ~disposition que, si pour une raison quelconque, l'ampoule venait à ne pas exploser à la température prévue, la fusion de son embase d'appui permettrait néanmoins la libération du clapet et la vidange, donc le fonctionnement de l'extinc- tueur. According to a main arrangement of the present invention 1 the screwable base is made of a fusible material at a temperature close to the explosion temperature of the bulb, for example and to fix ideas, at the temperature of 3504 + 50; the fusible material constituting the base can be a fusible alloy, it can also be a crystallized organic material or else a composite of a resin and a metallic filler, this material constituting the base must therefore ultimately have the following quality. be sufficiently hard and compact not to deform or break during screwing and not to deform over time under the support of the bulb, and have a relatively short and well defined melting range. It follows from this ~ provision that, if for any reason, the bulb does not explode at the expected temperature, the melting of its support base would nevertheless allow the release of the valve and emptying, therefore the operation of the 'fire extinguisher.

Suivant une disposition annexe de l'invention, un coussinet en matière souple et élastique est logé dans un logement prévu a eet effet dans l'embase, le coussinet étant destiné à être en contact direct avec l'ampoule et éviter à eelle-ei un contact direct avec l'embase ; il résulte de cette disposition que lors du vissage de l'embase pour emprisonner l'ampoule, on minimise les risques de briser accidentellement celle-ci.  According to an annexed arrangement of the invention, a cushion of flexible and elastic material is housed in a housing provided for this effect in the base, the cushion being intended to be in direct contact with the bulb and to prevent it from being direct contact with the base; it follows from this arrangement that when screwing the base to trap the bulb, it minimizes the risk of accidentally breaking it.

La présente invention sera mieux comprise et des détails en relevant apparaîtront à la description qui va être faite d'une forme particulière de réalisation en relation avec la figure de la planche annexée. The present invention will be better understood and details will be apparent from the description which will be given of a particular embodiment in relation to the figure of the attached plate.

La figure illustre en élévation partiellement coupée, un déclencheur thermique de l'invention. Celui-ci comprend essentiellement une te' te de vanne constituée d'un bouchon vissable 1 et d'un étrier 2 de forme générale en U, bouchon et étrier formant une pièce monobloc. The figure illustrates in partially cut elevation, a thermal trip device of the invention. This essentially comprises a valve head consisting of a screw cap 1 and a stirrup 2 of general U-shape, plug and stirrup forming a single piece.

te bouchon 1 comporte un alésage 4 dans lequel un clapet 5 à joints toriques peut coulisser ; le clapet est évidé à son extrémité 6 pour former un logement 7.the plug 1 has a bore 4 in which a valve 5 with O-rings can slide; the valve is hollowed out at its end 6 to form a housing 7.

La partie de l'étrier la plus éloignée du bouchon 1 est pourvue dans l'axe 8 du bouchon d'un trou taraudé 9 dans lequel peut être vissée l'embase 10 elle-même pourvue d'un trou axial 11. L'ampoule 12 comporte une extrémité effilée 13 qui peut être logée dans le trou axial 11 tandis que la partie de l'ampoule opposée à l'extrémité effilée est logée dans le logement 7 du clapet. The part of the stirrup furthest from the plug 1 is provided in the axis 8 of the plug with a tapped hole 9 into which the base 10 can itself be screwed provided with an axial hole 11. The bulb 12 has a tapered end 13 which can be housed in the axial hole 11 while the part of the bulb opposite the tapered end is housed in the housing 7 of the valve.

Suivant la disposition générale de l'invention, l'embase 10 est constituée d'un matériau fusible ; suivant une disposition secondaire, l'embase 10 est évidée pour former un logement 14 destiné à recevoir un coussinet 15 en forme de manchon cylindrique dont un évidement axial 16 sert à loger l'extrémité effilée de l'ampoule ; avantageusement, le manchon 15 peut être réalisé en une matière élastique tel que caoutchouc nitryl. According to the general arrangement of the invention, the base 10 is made of a fusible material; according to a secondary arrangement, the base 10 is hollowed out to form a housing 14 intended to receive a pad 15 in the form of a cylindrical sleeve, an axial recess 16 of which serves to accommodate the tapered end of the bulb; advantageously, the sleeve 15 can be made of an elastic material such as nitryl rubber.

La présente invention trouve son utilisation dans les installations, réservoirs, canalisations utilisées pour lutter contre l'incendie, dans les extincteurs et d'une manière générale dans tous les dispositifs ou installations pour lesquels un déclencheur thermique à ampoule Sprinkler est utilisé-.  The present invention finds its use in installations, tanks, pipes used to fight against fire, in fire extinguishers and in general in all devices or installations for which a thermal release with Sprinkler bulb is used.

Claims (3)

REVENDICATIONS 1.- Déclencheur thermique mettant en oeuvre une ampoule1.- Thermal release using a bulb "Sprinkler" servant d'appui à un clapet de fermeture "Sprinkler" used to support a closing valve d'une vanne, et s'appuyant elle-même sur une embase a valve, and leaning itself on a base vissable dans un étrier supporté par la tette de vanne, screwable in a bracket supported by the valve head, caractérisé : characterized: en ce que ladite embase (10) in that said base (10) vissable est constituée d'un matériau fusible à une screwable is made of a material fusible to a température voisine de la température d'explosion de l'ampoule,  temperature close to the explosion temperature of the bulb, d'où il résulte que, si pour une from which it follows that, if for a raison quelconque, l'ampoule venait à ne pas exploser à some reason, the bulb did not explode at la température prévue, la fusion de son embase d'appui the expected temperature, the melting of its support base permettrait néanmoins la libération du clapet et la would nevertheless allow the release of the valve and the vidange, donc le fonctionnement de l'extincteur ; emptying, therefore the operation of the extinguisher; 2.- Déolenoheur selon la revendication 1, caractérisé 2. Déolenoheur according to claim 1, characterized par un coussinet (15) en matière  by a pad (15) in material relativement souple et élastique, logé dans un logement  relatively flexible and elastic, housed in a housing (14) prévu à cet effet dans ladite embase (10), ledit (14) provided for this purpose in said base (10), said coussinet étant destiné à être en contact direct avec bearing being intended to be in direct contact with l'ampoule (12)1  the bulb (12) 1 d'où il résulte que lors du where it follows that during the vissage de l'embase pour emprisonner l 'ampoules on screwing the base to trap the bulbs on minimise les risques de briser accidentellement  minimizes the risk of accidental breakage celle-ci ; 3.- néclencheur selon la revendication 1, caractérisé  this one; 3.- trigger according to claim 1, characterized en ce que la matériau constitu- in that the material tif de l'embase est un alliage fusible ; tif of the base is a fusible alloy; 4.- Déclencheur selon la revendication 1, caractérisé  4.- Trigger according to claim 1, characterized en ce.que le matériau constitu in that the material made tif de l'embase est une matière organique cristallisée 5.- fléclencheur selon la revendication li caractérisé tif of the base is a crystallized organic material 5.- flencher according to claim li characterized en ce que le matériau constitu- in that the material tif de l'embase est un composite dune résine et d'une  tif of the base is a composite of a resin and a charge métallique 6.- Déclencheur selon la revendication 1, caractérisé  metal charge 6.- Trigger according to claim 1, characterized en ce que le coussinet (15) a la in that the bearing (15) has the forme d'un manchon cylindrique dont l'évidement axial shape of a cylindrical sleeve whose axial recess sert à loger une extrémité effilée (13) de l'ampoule used to accommodate a tapered end (13) of the bulb (12), et (12), and en ce que le logement (14) de in that the housing (14) of l'embase est cylindrique, de meme diamètre que le the base is cylindrical, of the same diameter as the diamètre extérieur du coussinet.  outside diameter of the bearing.
FR8801263A 1988-01-28 1988-01-28 THERMAL VALVE OPENING TRIGGER WITH DOUBLE SECURITY Expired - Fee Related FR2626649B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8801263A FR2626649B1 (en) 1988-01-28 1988-01-28 THERMAL VALVE OPENING TRIGGER WITH DOUBLE SECURITY

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Application Number Priority Date Filing Date Title
FR8801263A FR2626649B1 (en) 1988-01-28 1988-01-28 THERMAL VALVE OPENING TRIGGER WITH DOUBLE SECURITY

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FR2626649A1 true FR2626649A1 (en) 1989-08-04
FR2626649B1 FR2626649B1 (en) 1990-03-16

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4981179A (en) * 1988-06-10 1991-01-01 Wilfried Klein Thermal triggering device for sprinklers for stationary fire-extinguishing systems
EP0590235A1 (en) * 1992-10-01 1994-04-06 Total Walther Feuerschutz GmbH Temperature sensor
US5513708A (en) * 1991-02-28 1996-05-07 Sundholm Goeran Spray-head for fighting fire
EP0853958A2 (en) * 1997-01-18 1998-07-22 Grinnell Manufacturing (UK) Limited A tubular member and method of supporting same
US20150159764A1 (en) * 2012-07-27 2015-06-11 Paulo Peli Safety Device For Self-Propulsion Gas Systems
EP3215782A4 (en) * 2014-11-05 2018-07-04 Luxfer Canada Limited Thermal pressure relief device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR642049A (en) * 1927-10-06 1928-08-17 Improvements to automatic fire extinguishers
FR1582146A (en) * 1968-05-22 1969-09-26
FR2118399A5 (en) * 1970-12-18 1972-07-28 Auphan Joseph
FR2138923A1 (en) * 1971-05-24 1973-01-05 Matthew Hall Cy Ltd
FR2163232A5 (en) * 1972-01-07 1973-07-20 Firemaster Extinguisher
FR2273562A1 (en) * 1974-06-10 1976-01-02 Rochelet Edmond Sprinkler for fire extinguishing system - spring and fusible link operated by pressure or heat

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR642049A (en) * 1927-10-06 1928-08-17 Improvements to automatic fire extinguishers
FR1582146A (en) * 1968-05-22 1969-09-26
FR2118399A5 (en) * 1970-12-18 1972-07-28 Auphan Joseph
FR2138923A1 (en) * 1971-05-24 1973-01-05 Matthew Hall Cy Ltd
FR2163232A5 (en) * 1972-01-07 1973-07-20 Firemaster Extinguisher
FR2273562A1 (en) * 1974-06-10 1976-01-02 Rochelet Edmond Sprinkler for fire extinguishing system - spring and fusible link operated by pressure or heat

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4981179A (en) * 1988-06-10 1991-01-01 Wilfried Klein Thermal triggering device for sprinklers for stationary fire-extinguishing systems
US5513708A (en) * 1991-02-28 1996-05-07 Sundholm Goeran Spray-head for fighting fire
EP0590235A1 (en) * 1992-10-01 1994-04-06 Total Walther Feuerschutz GmbH Temperature sensor
EP0853958A2 (en) * 1997-01-18 1998-07-22 Grinnell Manufacturing (UK) Limited A tubular member and method of supporting same
EP0853958A3 (en) * 1997-01-18 1998-11-11 Grinnell Manufacturing (UK) Limited A tubular member and method of supporting same
US20150159764A1 (en) * 2012-07-27 2015-06-11 Paulo Peli Safety Device For Self-Propulsion Gas Systems
US9562618B2 (en) * 2012-07-27 2017-02-07 Emer S.P.A. Safety device for self-propulsion gas systems
EP2877764B1 (en) * 2012-07-27 2018-09-12 Emer S.p.a. Safety device, in particular for self-propulsion gas systems
EP3215782A4 (en) * 2014-11-05 2018-07-04 Luxfer Canada Limited Thermal pressure relief device

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Publication number Publication date
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