EP1143192A1 - Safety device preventing overpressure in an LPG reservoir - Google Patents

Safety device preventing overpressure in an LPG reservoir Download PDF

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Publication number
EP1143192A1
EP1143192A1 EP00400953A EP00400953A EP1143192A1 EP 1143192 A1 EP1143192 A1 EP 1143192A1 EP 00400953 A EP00400953 A EP 00400953A EP 00400953 A EP00400953 A EP 00400953A EP 1143192 A1 EP1143192 A1 EP 1143192A1
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EP
European Patent Office
Prior art keywords
safety device
valve
pressure
tank
opening
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
EP00400953A
Other languages
German (de)
French (fr)
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EP1143192B1 (en
Inventor
Alain Parnois
Laurent Foucher
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.)
Nexter Mechanics SA
Original Assignee
Giat Industries SA
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 Giat Industries SA filed Critical Giat Industries SA
Priority to AT00400953T priority Critical patent/ATE435398T1/en
Priority to DE60042480T priority patent/DE60042480D1/en
Priority to EP00400953A priority patent/EP1143192B1/en
Priority to ES00400953T priority patent/ES2329110T3/en
Publication of EP1143192A1 publication Critical patent/EP1143192A1/en
Application granted granted Critical
Publication of EP1143192B1 publication Critical patent/EP1143192B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
    • F17C13/123—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures for gas bottles, cylinders or reservoirs for tank vehicles or for railway tank wagons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0332—Safety valves or pressure relief valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/035—Propane butane, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/043—Pressure

Definitions

  • the technical sector of the present invention is that of safety devices for tanks intended to contain pressurized fluids, such as tanks under internal pressure, and more especially petroleum gas tanks liquefied, called LPG for vehicles.
  • tanks intended to contain pressurized fluids consist of a envelope made of mostly metallic material.
  • the current forms are generally cylindrical, toric or parallelepipedic. These shapes are good adapted to distribute the stresses evenly over the periphery of the tank.
  • These tanks are fitted with a valve called safety device intended to cause their opening in the event of overpressure in the tank.
  • These devices are consist of a simple safety valve calibrated to a opening pressure determined. In case of overpressure due for example to a failure of the filling or elevation lock exceptional temperature, the opening of this valve limits the risk of explosion. But if the rise in ambient temperature or pressure in the tank is extremely fast, in case of fire the risk of an explosion is not discarded since the opening of the valve does not allow to evacuate the flow resulting from the increase asymptotic increase in pressure.
  • the invention offers a safety device to hold account for this potential risk.
  • the present invention therefore relates to a safety device for a tank intended for contain pressurized fluid intended to cause the opening of the tank under the effect of the increase of pressure or temperature of the type comprising a safety valve for setting communication between the tank and the outside environment, characterized in that it includes a means for measure an abnormal increase in temperature pressure or fluid pressure in the tank to control the early opening of the safety valve.
  • the security device includes a means of measurement of the pressure build-up speed at inside the tank.
  • the measuring device is connected to the valve security by a commanding processing module opening the valve.
  • the measuring means consists of a sensor differential taking into account a variation of pressure determined for a defined period of time.
  • the module includes means to transform the information delivered by the sensor in a signal electric valve opening control.
  • the security device includes a means of measurement of the surrounding tank temperature.
  • the measuring device consists of a certain number of temperature measurement sensors arranged in the vicinity of the reservoir and reacting from a threshold determined.
  • the sensors are connected to the safety valve through a processing module controlling the opening of the valve.
  • the safety valve may consist of a spring system and can be fitted with a probe inserted in an articulated member arranged on the line spring compression.
  • An advantage of the tank according to the invention lies in that the reliability of the tank is improved by greatly reducing the danger of explosion.
  • Another advantage of the tank according to the invention is that all of the causes causing an overpressure is taken into account.
  • FIG. 1 there is shown a tank 1 intended to contain a fluid 2 under pressure by example a liquefied petroleum gas.
  • a fluid 2 under pressure by example a liquefied petroleum gas.
  • This tank is equipped in a known manner with a safety valve 3 allowing fluid 2 under pressure to escape when the internal pressure of the tank increases and reaches a certain value.
  • This component is tared in factory and is well known. It goes without saying that this valve 3 works, i.e. puts the tank in communication with the outside, only when the measured pressure reaches the set value. However, if the pressure builds up too quickly, asymptotically, this reference value is measured while the tank tolerance threshold at the pressure is exceeded, hence a certain risk explosion threatening personnel near the vehicle equipped with such a system.
  • this valve 3 is added a means 4 for measuring the internal pressure of the tank 1.
  • This means 4 delivers a signal which is treated in a module 5 which takes into account pressure increase in a given amount of time. When this increase is greater than a value previously fixed module 5 controls the opening of valve 3.
  • Means 4 is a commercial component such as a differential pressure sensor which takes into account a pressure variation determined in the tank for a period of time defined.
  • Module 5 includes electronic means conventional to transform the received signal into electrical energy to activate opening the valve 3.
  • FIG. 2 shows a schematic view of a second variant embodiment of the invention that the nearby temperature is measured tank 1 and no longer its pressure internal.
  • This realization finds its interest in case vehicle fire causing bad operation of safety valve 3 in case rapid increase in this temperature.
  • a value of reference which when exceeded allows order the valve. This value corresponds to a threshold function of the rate of increase of the temperature.
  • FIG. 3 a variant of realization of a safety valve improved by a mechanical triggering device.
  • a mechanical probe 9 which lowers the compression load of the spring 10 applied to its support seat 12 from a threshold predetermined temperature.
  • This probe 9 is for that interposed on the compression line of the spring 10 in an articulated system 11, of the type parallelogram, for example between spring 10 and the valve seat 8, so as to reduce the effort calibration of this spring in connection with the increase temperature and thereby control the opening valve premature.
  • Probe 9 can be inserted between the spring 10 and its seat 12.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

A vehicle fuel tank (1) containing liquid petroleum gas (2) is protected from an extremely rapid rise in pressure by a pressure measuring unit (4) which sends a pressure signal to an electronic module (5). The electronic module compares the rate of rise of pressure with a preset threshold and if necessary sends an electrical signal to a (3)

Description

Le secteur technique de la présente invention est celui des dispositifs de sécurité pour les réservoirs destinés à contenir des fluides sous pression, tels les réservoirs soumis à une pression interne, et plus particulièrement les réservoirs de gaz de pétrole liquéfié, dits GPL pour véhicules.The technical sector of the present invention is that of safety devices for tanks intended to contain pressurized fluids, such as tanks under internal pressure, and more especially petroleum gas tanks liquefied, called LPG for vehicles.

Généralement, les réservoirs destinés à contenir des fluides sous pression sont constitués d'une enveloppe en matériau le plus souvent métallique. Les formes actuelles sont généralement cylindriques, toriques ou parallélépipédiques. Ces formes sont bien adaptées pour répartir uniformément les contraintes sur la périphérie du réservoir.Generally, tanks intended to contain pressurized fluids consist of a envelope made of mostly metallic material. The current forms are generally cylindrical, toric or parallelepipedic. These shapes are good adapted to distribute the stresses evenly over the periphery of the tank.

Ces réservoirs sont munis d'une valve dite de sécurité destinée à provoquer leur ouverture en cas de surpression dans le réservoir. Ces dispositifs sont constitués d'une simple soupape de sécurité tarée à une pression d'ouverture déterminée. En cas de surpression due par exemple à une défaillance du système de verrouillage du remplissage ou à une élévation exceptionnelle de la température, l'ouverture de cette valve permet de limiter les risques d'explosion. Mais si l'élévation de la température environnante ou de la pression dans le réservoir est extrêmement rapide, en cas d'incendie le risque d'une explosion n'est pas écarté puisque l'ouverture de la soupape ne permet pas d'évacuer le débit résultant de l'augmentation asymptotique de la montée en pression.These tanks are fitted with a valve called safety device intended to cause their opening in the event of overpressure in the tank. These devices are consist of a simple safety valve calibrated to a opening pressure determined. In case of overpressure due for example to a failure of the filling or elevation lock exceptional temperature, the opening of this valve limits the risk of explosion. But if the rise in ambient temperature or pressure in the tank is extremely fast, in case of fire the risk of an explosion is not discarded since the opening of the valve does not allow to evacuate the flow resulting from the increase asymptotic increase in pressure.

C'est pour pallier ce risque que l'invention propose un dispositif de sécurité permettant de tenir compte de ce risque potentiel.It is to mitigate this risk that the invention offers a safety device to hold account for this potential risk.

La présente invention a donc pour objet un dispositif de sécurité pour un réservoir destiné à contenir du fluide sous pression destiné à provoquer l'ouverture du réservoir sous l'effet de l'augmentation de pression ou de température du type comportant une soupape de sécurité permettant de mettre en communication le réservoir et le milieu extérieur, caractérisé en ce qu'il comporte un moyen permettant de mesurer un accroissement anormal de la température extérieure ou de la pression du fluide dans le réservoir pour commander l'ouverture anticipée de la valve de sécurité.The present invention therefore relates to a safety device for a tank intended for contain pressurized fluid intended to cause the opening of the tank under the effect of the increase of pressure or temperature of the type comprising a safety valve for setting communication between the tank and the outside environment, characterized in that it includes a means for measure an abnormal increase in temperature pressure or fluid pressure in the tank to control the early opening of the safety valve.

Le dispositif de sécurité comporte un moyen de mesure de la vitesse de montée en pression à l'intérieur du réservoir.The security device includes a means of measurement of the pressure build-up speed at inside the tank.

Le moyen de mesure est relié à la valve de sécurité par un module de traitement commandant l'ouverture de la valve.The measuring device is connected to the valve security by a commanding processing module opening the valve.

Le moyen de mesure est constitué par un capteur différentiel prenant en compte une variation de pression déterminée pour un laps de temps défini.The measuring means consists of a sensor differential taking into account a variation of pressure determined for a defined period of time.

Le module comporte des moyens pour transformer l'information délivrée par le capteur en un signal électrique de commande de l'ouverture de la valve.The module includes means to transform the information delivered by the sensor in a signal electric valve opening control.

Le dispositif de sécurité comporte un moyen de mesure de la température environnante du réservoir.The security device includes a means of measurement of the surrounding tank temperature.

Le moyen de mesure est constitué d'un certain nombre de capteurs de mesure de la température disposés au voisinage du réservoir et réagissant à partir d'un seuil déterminé.The measuring device consists of a certain number of temperature measurement sensors arranged in the vicinity of the reservoir and reacting from a threshold determined.

Les capteurs sont reliés à la valve de sécurité par l'intermédiaire d'un module de traitement commandant l'ouverture de la valve.The sensors are connected to the safety valve through a processing module controlling the opening of the valve.

La valve de sécurité peut être constituée d'un système à ressort et peut être munie d'une sonde intercalée dans un organe articulé disposé sur la ligne de compression du ressort.The safety valve may consist of a spring system and can be fitted with a probe inserted in an articulated member arranged on the line spring compression.

Un avantage du réservoir selon l'invention réside dans le fait que la fiabilité du réservoir est améliorée en réduisant fortement le danger d'une explosion.An advantage of the tank according to the invention lies in that the reliability of the tank is improved by greatly reducing the danger of explosion.

Un autre avantage du réservoir selon l'invention réside dans le fait que l'ensemble des causes provoquant une surpression est pris en compte.Another advantage of the tank according to the invention is that all of the causes causing an overpressure is taken into account.

D'autres caractéristiques, détails et avantages de l'invention apparaítront plus clairement à la lecture du complément de description qui va suivre des modes de réalisation donnés à titre d'exemple en relation avec des dessins sur lesquels :

  • la figure 1 est une représentation schématique d'un système selon l'invention repérant la surpression régnant dans le réservoir,
  • la figure 2 est également une représentation schématique d'un mode de réalisation prenant en compte la température extérieure du réservoir, et
  • la figure 3 illustre la réalisation d'une sonde mécanique.
Other characteristics, details and advantages of the invention will appear more clearly on reading the additional description which follows of the embodiments given by way of example in relation to the drawings in which:
  • FIG. 1 is a schematic representation of a system according to the invention identifying the overpressure prevailing in the tank,
  • FIG. 2 is also a schematic representation of an embodiment taking into account the outside temperature of the tank, and
  • FIG. 3 illustrates the production of a mechanical probe.

Sur la figure 1, on a représenté un réservoir 1 destiné à contenir un fluide 2 sous pression par exemple un gaz de pétrole liquéfié. Ce réservoir est équipé de façon connue d'une valve 3 de sécurité permettant au fluide 2 sous pression de s'échapper lorsque la pression interne du réservoir s'accroít et atteint une certaine valeur. Ce composant est taré en usine et est bien connu. Il va de soit que cette valve 3 fonctionne, c'est-à-dire met le réservoir en communication avec l'extérieur, uniquement lorsque la pression mesurée atteint la valeur fixée. Si toutefois la pression s'accroít de manière trop rapide, de manière asymptotique, cette valeur de référence est mesurée alors que le seuil de tolérance du réservoir à la pression est dépassé, d'où un risque certain d'explosion menaçant le personnel à proximité du véhicule équipé d'un tel système. Suivant une première réalisation de l'invention, on adjoint à cette valve 3 un moyen de mesure 4 de la pression interne du réservoir 1. Ce moyen 4 délivre un signal qui est traité dans un module 5 qui prend en compte l'augmentation de pression dans un laps de temps donné. Lorsque cette augmentation est supérieure à une valeur préalablement fixée le module 5 commande l'ouverture de la valve 3. Le moyen 4 est un composant du commerce comme par exemple un capteur différentiel de pression qui prend en compte une variation de pression déterminée dans le réservoir pour un laps de temps défini. Le module 5 comprend des moyens électroniques classiques permettant de transformer le signal reçu en une énergie électrique permettant d'actionner l'ouverture de la valve 3.In Figure 1, there is shown a tank 1 intended to contain a fluid 2 under pressure by example a liquefied petroleum gas. This tank is equipped in a known manner with a safety valve 3 allowing fluid 2 under pressure to escape when the internal pressure of the tank increases and reaches a certain value. This component is tared in factory and is well known. It goes without saying that this valve 3 works, i.e. puts the tank in communication with the outside, only when the measured pressure reaches the set value. However, if the pressure builds up too quickly, asymptotically, this reference value is measured while the tank tolerance threshold at the pressure is exceeded, hence a certain risk explosion threatening personnel near the vehicle equipped with such a system. Following a first embodiment of the invention, this valve 3 is added a means 4 for measuring the internal pressure of the tank 1. This means 4 delivers a signal which is treated in a module 5 which takes into account pressure increase in a given amount of time. When this increase is greater than a value previously fixed module 5 controls the opening of valve 3. Means 4 is a commercial component such as a differential pressure sensor which takes into account a pressure variation determined in the tank for a period of time defined. Module 5 includes electronic means conventional to transform the received signal into electrical energy to activate opening the valve 3.

On a représenté à la figure 2 une vue schématique d'une seconde variante de réalisation de l'invention selon laquelle on mesure la température à proximité immédiate du réservoir 1 et non plus sa pression interne. Cette réalisation trouve son intérêt en cas d'incendie du véhicule, ce qui provoque un mauvais fonctionnement de la valve de sécurité 3 en cas d'augmentation rapide de cette température. On dispose pour cela un certain nombre de capteurs 6 de temprérature dans le voisinage immédiat du réservoir 1. Ces capteurs 6 mesurent en continu la température et délivrent une information au module 5 qui commande comme précédemment l'ouverture de la valve 3 en cas d'élévation rapide. A cette fin, on fixe une valeur de référence qui lorsqu'elle est dépassée permet de commander la valve. Cette valeur correspond à un seuil fonction de la vitesse d'accroissement de la température.FIG. 2 shows a schematic view of a second variant embodiment of the invention that the nearby temperature is measured tank 1 and no longer its pressure internal. This realization finds its interest in case vehicle fire causing bad operation of safety valve 3 in case rapid increase in this temperature. We dispose for this a number of sensors 6 of temperature in the immediate vicinity of the tank 1. These sensors 6 continuously measure the temperature and deliver information to module 5 which commands as before the opening of valve 3 in case rapid rise. To this end, we set a value of reference which when exceeded allows order the valve. This value corresponds to a threshold function of the rate of increase of the temperature.

Sur la figure 3, on a représenté une variante de réalisation d'une valve de sécurité améliorée par un dispositif mécanique de déclenchement. On prévoit sur la chaíne de tarage de la soupape 7 une sonde mécanique 9 qui abaisse la charge de compression du ressort 10 appliquée sur son siège d'appui 12 à partir d'un seuil prédéterminé de température. Cette sonde 9 est pour cela intercalée sur la ligne de compression du ressort 10 dans un système articulé 11, du type parallélogramme, par exemple entre le ressort 10 et le siège 8 de la soupape, de manière à diminuer l'effort de tarage de ce ressort en liaison avec l'augmentation de température et par là même de commander l'ouverture prématurée de la valve. La sonde 9 peut être intercalée entre le ressort 10 et son siège 12.In FIG. 3, a variant of realization of a safety valve improved by a mechanical triggering device. We plan on the valve calibration chain 7 a mechanical probe 9 which lowers the compression load of the spring 10 applied to its support seat 12 from a threshold predetermined temperature. This probe 9 is for that interposed on the compression line of the spring 10 in an articulated system 11, of the type parallelogram, for example between spring 10 and the valve seat 8, so as to reduce the effort calibration of this spring in connection with the increase temperature and thereby control the opening valve premature. Probe 9 can be inserted between the spring 10 and its seat 12.

Claims (9)

Dispositif de sécurité pour un réservoir (1) destiné à contenir du fluide (2) sous pression destiné à provoquer l'ouverture du réservoir sous l'effet de l'augmentation de pression du type comportant une soupape de sécurité (3) permettant de mettre en communication le réservoir et le milieu extérieur, caractérisé en ce qu'il comporte un moyen (4, 5, 6) permettant de mesurer un accroissement anormal de la température extérieure ou de la pression du fluide dans le réservoir commandant l'ouverture anticipée de la valve de sécurité (3).Safety device for a tank (1) intended to contain fluid (2) under pressure intended to cause the opening of the tank under the effect of the pressure increase of the type comprising a safety valve (3) making it possible to put in communication with the reservoir and the external environment, characterized in that it comprises a means (4, 5, 6) making it possible to measure an abnormal increase in the external temperature or the pressure of the fluid in the reservoir controlling the anticipated opening of the safety valve (3). Dispositif de sécurité selon la revendication 1, caractérisé en ce qu'il comporte un moyen de mesure (4) de la vitesse de montée en pression du réservoir (1) .Safety device according to claim 1, characterized in that it comprises means for measuring (4) the speed of pressure build-up of the tank (1). Dispositif de sécurité selon la revendication 2, caractérisé en ce que le moyen de mesure (4) est relié à la valve de sécurité (3) par un module de traitement (5) commandant l'ouverture de la valve (3).Safety device according to claim 2, characterized in that the measuring means (4) is connected to the safety valve (3) by a processing module (5) controlling the opening of the valve (3). Dispositif de sécurité selon la revendication 1, caractérisé en ce que le moyen de mesure (4) est un capteur différentiel de pression prenant en compte une variation de pression déterminée pour un laps de temps défini.Safety device according to claim 1, characterized in that the measuring means (4) is a differential pressure sensor taking into account a pressure variation determined for a defined period of time. Dispositif de sécurité selon la revendication 4, caractérisé en ce que le module (5) comporte des moyens permettant de transformer l'information délivrée par le capteur en un signal électrique de commande de l'ouverture de la valve (3).Safety device according to claim 4, characterized in that the module (5) comprises means making it possible to transform the information delivered by the sensor into an electrical signal for controlling the opening of the valve (3). Dispositif de sécurité selon la revendication 1, caractérisé en ce qu'il comporte un moyen de mesure (6) de la température environnante au réservoir (1).Safety device according to claim 1, characterized in that it includes means for measuring (6) the temperature surrounding the tank (1). Dispositif de sécurité selon la revendication 6, caractérisé en ce que le moyen de mesure (6) est constitué d'un certain nombre de capteurs de mesure de la température disposés au voisinage du réservoir (1) et réagissant à un seuil prédéterminé.Safety device according to claim 6, characterized in that the measuring means (6) consists of a number of temperature measuring sensors arranged in the vicinity of the tank (1) and reacting to a predetermined threshold. Dispositif de sécurité selon la revendication 7, caractérisé en ce que les capteurs (7) sont reliés à la valve de sécurité (3) par l'intermédiaire d'un module de traitement (6) commandant l'ouverture de la valve.Safety device according to claim 7, characterized in that the sensors (7) are connected to the safety valve (3) via a processing module (6) controlling the opening of the valve. Dispositif de sécurité selon la revendication 1, caractérisé en ce que la valve de sécurité (7) est constituée d'un système à ressort (10) et est munie d'une sonde (9) intercalée dans un organe articulé (11) disposé sur la ligne de compression du ressort (10).Safety device according to claim 1, characterized in that the safety valve (7) consists of a spring system (10) and is provided with a probe (9) interposed in an articulated member (11) arranged on the compression line of the spring (10).
EP00400953A 2000-04-07 2000-04-07 Safety device preventing overpressure in an LPG reservoir Expired - Lifetime EP1143192B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT00400953T ATE435398T1 (en) 2000-04-07 2000-04-07 OVERPRESSURE SAFETY DEVICE FOR LIQUID GAS TANKS
DE60042480T DE60042480D1 (en) 2000-04-07 2000-04-07 Overpressure safety device for liquefied gas tanks
EP00400953A EP1143192B1 (en) 2000-04-07 2000-04-07 Safety device preventing overpressure in an LPG reservoir
ES00400953T ES2329110T3 (en) 2000-04-07 2000-04-07 OVERPRESSURE SECURITY DEVICE OF A DEPOSIT CONTAINING LIQUATE OIL GAS.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00400953A EP1143192B1 (en) 2000-04-07 2000-04-07 Safety device preventing overpressure in an LPG reservoir

Publications (2)

Publication Number Publication Date
EP1143192A1 true EP1143192A1 (en) 2001-10-10
EP1143192B1 EP1143192B1 (en) 2009-07-01

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Application Number Title Priority Date Filing Date
EP00400953A Expired - Lifetime EP1143192B1 (en) 2000-04-07 2000-04-07 Safety device preventing overpressure in an LPG reservoir

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EP (1) EP1143192B1 (en)
AT (1) ATE435398T1 (en)
DE (1) DE60042480D1 (en)
ES (1) ES2329110T3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006021234A1 (en) * 2004-08-25 2006-03-02 Magnex Scientific Limited Cryogenic vessel boil-off monitoring systems
DE102008031343A1 (en) * 2008-07-02 2010-01-07 Bayerische Motoren Werke Aktiengesellschaft Boil-off-valve monitoring method for cryogenic tank of motor vehicle, involves outputting warning during existence of significant deviation of read value of tank internal pressure from value of specified threshold pressure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0163968A2 (en) * 1984-05-10 1985-12-11 LGA Gastechnik GmbH Security device for liquefied-gas tanks
EP0235693A2 (en) * 1986-03-05 1987-09-09 IRS Industrie Rationalisierungs Systeme GmbH Method and apparatus for explosion protection by pressure surveillance of plants, pipelines and the like
US5848604A (en) * 1997-10-29 1998-12-15 Technical Products Group, Inc. Thermally responsive pressure relief system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0163968A2 (en) * 1984-05-10 1985-12-11 LGA Gastechnik GmbH Security device for liquefied-gas tanks
EP0235693A2 (en) * 1986-03-05 1987-09-09 IRS Industrie Rationalisierungs Systeme GmbH Method and apparatus for explosion protection by pressure surveillance of plants, pipelines and the like
US5848604A (en) * 1997-10-29 1998-12-15 Technical Products Group, Inc. Thermally responsive pressure relief system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006021234A1 (en) * 2004-08-25 2006-03-02 Magnex Scientific Limited Cryogenic vessel boil-off monitoring systems
DE102008031343A1 (en) * 2008-07-02 2010-01-07 Bayerische Motoren Werke Aktiengesellschaft Boil-off-valve monitoring method for cryogenic tank of motor vehicle, involves outputting warning during existence of significant deviation of read value of tank internal pressure from value of specified threshold pressure

Also Published As

Publication number Publication date
ES2329110T3 (en) 2009-11-23
DE60042480D1 (en) 2009-08-13
ATE435398T1 (en) 2009-07-15
EP1143192B1 (en) 2009-07-01

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