WO2009010177A1 - Soupape de sécurité pour libérer du gaz en surpression, en particulier pour des appareils de propulsion de véhicule gpl - Google Patents

Soupape de sécurité pour libérer du gaz en surpression, en particulier pour des appareils de propulsion de véhicule gpl Download PDF

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Publication number
WO2009010177A1
WO2009010177A1 PCT/EP2008/005272 EP2008005272W WO2009010177A1 WO 2009010177 A1 WO2009010177 A1 WO 2009010177A1 EP 2008005272 W EP2008005272 W EP 2008005272W WO 2009010177 A1 WO2009010177 A1 WO 2009010177A1
Authority
WO
WIPO (PCT)
Prior art keywords
safety valve
cylindrical chamber
elastic member
gas
valve according
Prior art date
Application number
PCT/EP2008/005272
Other languages
English (en)
Inventor
Achille Tomasetto
Original Assignee
Tomasetto Achille S.P.A.
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 Tomasetto Achille S.P.A. filed Critical Tomasetto Achille S.P.A.
Publication of WO2009010177A1 publication Critical patent/WO2009010177A1/fr

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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
    • 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
    • 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

Definitions

  • the present invention relates to a safety valve for releasing gas in overpressure, particularly for LPG vehicles propulsion apparatus.
  • a safety valve for releasing gas in overpressure particularly for LPG vehicles propulsion apparatus.
  • suitable safety devices have been devised which, in emergency conditions, such as a sudden increase in the internal pressure of the tank due to a fire, are capable of evacuating a large quantity of gas in a very short time.
  • the simplest safety device substantially consists of a spring-loaded valve, which is integrated in the multipurpose valve and is constituted by a chamber which is connected to the outside environment and to the inside of the tank and by a flow control element which is pushed by a spring.
  • the gas is evacuated both through the spring-loaded valve and through the duct freed by the fusible element, which melts when a temperature of approximately 120 0 C is reached.
  • Italian Patent No. 1315175 discloses a safety device constituted by a double spring- loaded valve which is integrated in the multipurpose valve.
  • the valve is constituted by a chamber which is closed by a fusible plug and is connected both to the outside environment and to the inside of the tank.
  • the valve also comprises a flow control element which is pushed by a first spring arranged inside the chamber and by a second spring located within the tank. In normal pressure conditions the flow control element closes the opening connecting the inside of the tank and the outside environment under the thrust of both springs, while in case of fire the fusible plug melts, releasing the first spring, and the gas in overpressure moves the flow control element, overcoming the action of the second spring, and evacuates externally.
  • Italian Patent No. 1315578 discloses a safety device constituted by another type of spring-loaded valve integrated in the multipurpose valve.
  • Such valve is constituted by a chamber which is connected to the outside environment and to the inside of the tank, by a flow control element, which is pushed by a spring located inside the chamber, and by a fusible insert, which is inserted in the side walls of the chamber.
  • the flow control element closes the opening connecting the inside of the tank and the outside environment by way of the thrust of the spring; vice versa, in case of fire, the gas in overpressure evacuates externally both through the hole released by the melting of the fusible insert and by moving the flow control element after overcoming the action of the spring.
  • the above described device with the double spring-loaded valve necessarily entails the use of two springs and requires the installation of one of the two springs inside the tank, while the other devices, constituted by the single spring-loaded valve and by a separate fusible insert, appear particularly complicated to manufacture.
  • the aim of the present invention is to overcome the drawbacks of the cited prior art by, providing a safety valve which, in overpressure conditions, is capable of evacuating from a tank a large amount of gas in a very short time.
  • an object of the invention is to provide a safety valve which integrates, in a single structure, a fusible device and a spring-loaded valve, reducing space occupation and difficulties in production.
  • Another object of the invention is to provide a safety valve which can be integrated in a multipurpose valve.
  • a safety valve for releasing gas in overpressure comprising a cylindrical chamber provided with a plurality of lateral holes and with at least one opening which is provided on the bottom of said cylindrical chamber in order to be connected to the inside of a tank which contains said gas, said cylindrical chamber accommodating a flow control means which is kept in abutment against said opening by an elastic member, characterized that it comprises at least one fusible device which is joined to the top of said cylindrical chamber in order to keep said elastic member compressed and contrast the thrust of said gas exclusively in normal pressure and temperature conditions.
  • Figure 1 is an exploded sectional view of a safety valve according to the invention
  • Figure 2 is a sectional view of the safety valve according to the invention, in normal pressure and temperature conditions
  • Figure 3 is a sectional view of the safety valve according to the invention in case of fire.
  • the safety valve generally designated by the reference numeral 1 , comprises a cylindrical chamber 2, provided with lateral holes 3 which are connected to the outside environment, and with an opening 4 provided on the bottom of the cylindrical chamber 2 so as to be connected to the inside of a multipurpose valve 60, of which the safety valve 1 is an integral part.
  • the multipurpose valve 60 is connected to the inside of a tank, not shown in the figures, in which the gas 70 is stored.
  • a flow control means 5 is accommodated within the cylindrical chamber 2 and is kept in abutment to the opening 4 by an elastic member in order to prevent the exit of the gas 70 from the multipurpose valve 60 when in normal pressure and temperature conditions.
  • the elastic member is preferably constituted by a spring 6.
  • the flow control means 5 comprises a bush 7 which has a square cross-section, provided with a sealing member which is preferably constituted by a pad of elastomer 8, and is provided with a receptacle
  • the safety valve 1 comprises a fusible device which is joined to the top of the cylindrical chamber 2 so as to keep the spring 6 compressed and contrast the thrust of the gas 70 only in normal pressure and temperature conditions.
  • the fusible device is constituted by a cylinder 10 made of a low-melting alloy, which is accommodated within an adjustment screw 11 which is associated with the top of the cylindrical chamber 2 so as to allow to adjust the compression of the spring 6.
  • a plurality of through holes 13 are provided at the head of the adjustment screw 11 ; such through holes 13 allow the metal disk 12 and the spring 6 to extrude the cylinder 10 made of low-melting alloy if it melts due to an increase in temperature. Operation of the safety valve according to the invention is as follows. In normal pressure and temperature conditions, the flow control means 5 prevents the gas 70 from escaping from the multipurpose valve 60 through the opening 4, by virtue of the force applied by the spring 6.
  • the flow control means 5 rises and frees the opening 4, allowing the gas 70 to exit from the multipurpose valve 60 and to disperse into the outside environment, passing laterally with respect to the bush 7 and flowing out through the lateral holes 3.
  • the safety valve according to the invention fully achieves the intended aim, since in overpressure conditions it is able to evacuate a large quantity of gas from a tank, in a very short time, in compliance with current regulatory requirements.
  • the safety valve according to the invention can be an integral part of a multipurpose valve, and is simple to manufacture and quick to install.
  • the present valve is capable of integrating a fusible device and a spring-loaded valve, reducing space occupations and difficulties in production.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)
  • Feeding And Controlling Fuel (AREA)

Abstract

L'invention concerne une soupape de sécurité (1), en particulier pour libérer du gaz en surpression, laquelle soupape comprend une chambre cylindrique (2) comportant plusieurs trous latéraux (3) et une ouverture (4) qui est disposée sur la partie inférieure et la relie à l'intérieur d'un réservoir qui contient du gaz ; la chambre cylindrique (2) recevant des moyens de régulation d'écoulement (5) qui sont sollicités en butée contre l'ouverture (4) par un ressort (6). Un dispositif de fusible (10) est réuni à la partie supérieure de la chambre cylindrique (2) afin de maintenir le ressort (6) comprimé et de s'opposer à la poussée du gaz seulement dans des conditions de pression et de température normales.
PCT/EP2008/005272 2007-07-18 2008-06-27 Soupape de sécurité pour libérer du gaz en surpression, en particulier pour des appareils de propulsion de véhicule gpl WO2009010177A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVI2007A000204 2007-07-18
ITVI20070204 ITVI20070204A1 (it) 2007-07-18 2007-07-18 Struttura di valvola di sicurezza, particolarmente per il rilascio di gas in sovrapressione.

Publications (1)

Publication Number Publication Date
WO2009010177A1 true WO2009010177A1 (fr) 2009-01-22

Family

ID=39864743

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/005272 WO2009010177A1 (fr) 2007-07-18 2008-06-27 Soupape de sécurité pour libérer du gaz en surpression, en particulier pour des appareils de propulsion de véhicule gpl

Country Status (2)

Country Link
IT (1) ITVI20070204A1 (fr)
WO (1) WO2009010177A1 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012114358A1 (fr) * 2011-02-23 2012-08-30 Emer S.P.A. Dispositif de décompression, en particulier pour les circuits de gaz
WO2012123974A1 (fr) * 2011-03-14 2012-09-20 Emer S.P.A. Dispositif de sûreté, en particulier pour systèmes de gaz
WO2014032526A1 (fr) * 2012-08-29 2014-03-06 西安新思化工设备制造有限公司 Soupape de sûreté du type comprenant un alliage fusible présentant des propriétés de faible fuite et de forte étanchéité
CN104508341A (zh) * 2013-03-04 2015-04-08 川崎重工业株式会社 熔栓式安全阀
AU2012202206B2 (en) * 2011-11-17 2015-09-17 Hyundai Motor Company Pressure sustaining system for LPG bombe
WO2016185681A1 (fr) * 2015-05-15 2016-11-24 株式会社デンソー Soupape de décharge et pompe haute pression l'utilisant
DE102015103046B4 (de) * 2014-03-05 2016-12-22 Toyota Jidosha Kabushiki Kaisha Sicherheitsventil
FR3052224A1 (fr) * 2016-06-07 2017-12-08 Peugeot Citroen Automobiles Sa Soupape de securite avec maintien en ouverture
EP3358240A1 (fr) * 2017-01-31 2018-08-08 Atf S.R.L. Dispositif de sécurité pour réservoir de gaz sous pression et son procédé de fonctionnement
CN109282062A (zh) * 2017-07-21 2019-01-29 凯迈（洛阳）气源有限公司 温度压力安全阀
WO2020250258A1 (fr) * 2019-06-11 2020-12-17 St-Il Special S.A.S. Di Cappeller Alessandro & C. Soupape de décompression
WO2022270792A1 (fr) * 2021-06-23 2022-12-29 영도산업 주식회사 Dispositif de décharge pour récipient à haute pression
WO2024103484A1 (fr) * 2022-11-16 2024-05-23 上海三利数字技术有限公司 Noyau de soupape, soupape de surpression, contenant interne de stockage de données ignifuge et dispositif de stockage de données ignifuge

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5632297A (en) * 1995-09-26 1997-05-27 Amcast Industrial Corporation Piston-type thermally or pressure activated relief device
US20030217770A1 (en) * 2002-05-24 2003-11-27 Schultz Jeffrey A. Combination thermal and pressure relief valve
EP1521022A1 (fr) * 2003-09-30 2005-04-06 C.R.F. Società Consortile per Azioni Soupape de sûreté pour réservoirs sous pression et réservoir avec une telle soupape
DE60023955T2 (de) * 2000-06-30 2006-05-24 Giat Industries Sicherheitsventil für flüssiggasdruckbehälter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5632297A (en) * 1995-09-26 1997-05-27 Amcast Industrial Corporation Piston-type thermally or pressure activated relief device
DE60023955T2 (de) * 2000-06-30 2006-05-24 Giat Industries Sicherheitsventil für flüssiggasdruckbehälter
US20030217770A1 (en) * 2002-05-24 2003-11-27 Schultz Jeffrey A. Combination thermal and pressure relief valve
EP1521022A1 (fr) * 2003-09-30 2005-04-06 C.R.F. Società Consortile per Azioni Soupape de sûreté pour réservoirs sous pression et réservoir avec une telle soupape

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012114358A1 (fr) * 2011-02-23 2012-08-30 Emer S.P.A. Dispositif de décompression, en particulier pour les circuits de gaz
WO2012123974A1 (fr) * 2011-03-14 2012-09-20 Emer S.P.A. Dispositif de sûreté, en particulier pour systèmes de gaz
CN103443517A (zh) * 2011-03-14 2013-12-11 艾莫股份公司 特别用于气体系统的泄放装置
AU2012202206B2 (en) * 2011-11-17 2015-09-17 Hyundai Motor Company Pressure sustaining system for LPG bombe
US9145848B2 (en) 2011-11-17 2015-09-29 Hyundai Motor Company Pressure sustaining system for LPG bombe
WO2014032526A1 (fr) * 2012-08-29 2014-03-06 西安新思化工设备制造有限公司 Soupape de sûreté du type comprenant un alliage fusible présentant des propriétés de faible fuite et de forte étanchéité
CN104508341A (zh) * 2013-03-04 2015-04-08 川崎重工业株式会社 熔栓式安全阀
US9562619B2 (en) 2014-03-05 2017-02-07 Toyota Jidosha Kabushiki Kaisha Safety valve
DE102015103046B4 (de) * 2014-03-05 2016-12-22 Toyota Jidosha Kabushiki Kaisha Sicherheitsventil
US10927805B2 (en) 2015-05-15 2021-02-23 Denso Corporation High pressure pump
WO2016185681A1 (fr) * 2015-05-15 2016-11-24 株式会社デンソー Soupape de décharge et pompe haute pression l'utilisant
US20180087481A1 (en) * 2015-05-15 2018-03-29 Denso Corporation High pressure pump
JP2016217383A (ja) * 2015-05-15 2016-12-22 株式会社デンソー リリーフ弁、および、これを用いた高圧ポンプ
FR3052224A1 (fr) * 2016-06-07 2017-12-08 Peugeot Citroen Automobiles Sa Soupape de securite avec maintien en ouverture
EP3358240A1 (fr) * 2017-01-31 2018-08-08 Atf S.R.L. Dispositif de sécurité pour réservoir de gaz sous pression et son procédé de fonctionnement
CN109282062A (zh) * 2017-07-21 2019-01-29 凯迈（洛阳）气源有限公司 温度压力安全阀
WO2020250258A1 (fr) * 2019-06-11 2020-12-17 St-Il Special S.A.S. Di Cappeller Alessandro & C. Soupape de décompression
CN114144612A (zh) * 2019-06-11 2022-03-04 卡派勒未来有限责任公司 释放阀
US11746919B2 (en) 2019-06-11 2023-09-05 Cappeller Futura SRL Release valve
CN114144612B (zh) * 2019-06-11 2023-11-24 卡派勒未来有限责任公司 释放阀
WO2022270792A1 (fr) * 2021-06-23 2022-12-29 영도산업 주식회사 Dispositif de décharge pour récipient à haute pression
WO2024103484A1 (fr) * 2022-11-16 2024-05-23 上海三利数字技术有限公司 Noyau de soupape, soupape de surpression, contenant interne de stockage de données ignifuge et dispositif de stockage de données ignifuge

Also Published As

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