EP1067328A1 - Burst-proof tank with a wall breaking beyond a certain pressure - Google Patents

Burst-proof tank with a wall breaking beyond a certain pressure Download PDF

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Publication number
EP1067328A1
EP1067328A1 EP00401298A EP00401298A EP1067328A1 EP 1067328 A1 EP1067328 A1 EP 1067328A1 EP 00401298 A EP00401298 A EP 00401298A EP 00401298 A EP00401298 A EP 00401298A EP 1067328 A1 EP1067328 A1 EP 1067328A1
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EP
European Patent Office
Prior art keywords
partition
tank
pressure
wall
test
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.)
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Application number
EP00401298A
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German (de)
French (fr)
Inventor
Alain Dailloux
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.)
Metallurgique Liotard Freres SA Ste
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Metallurgique Liotard Freres SA Ste
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Publication date
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Publication of EP1067328A1 publication Critical patent/EP1067328A1/en
Withdrawn legal-status Critical Current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
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/02—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge involving reinforcing arrangements
    • F17C1/08—Integral reinforcements, e.g. ribs
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0123—Shape cylindrical with variable thickness or diameter
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0147—Shape complex
    • F17C2201/0166—Shape complex divided in several chambers
    • 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
    • F17C2209/00—Vessel construction, in particular methods of manufacturing
    • F17C2209/22—Assembling processes
    • F17C2209/221—Welding
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/035—High pressure (>10 bar)
    • 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
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/04—Reducing risks and environmental impact
    • F17C2260/042—Reducing risk of explosion

Definitions

  • the present invention relates to reservoirs resistant to pressure and, more particularly, to those intended to contain gas liquefied petroleum and to be mounted on a motor vehicle.
  • the invention provides for this in a simple manner by means of a reservoir. pressure resistant with an outer wall and at least one interior partition connecting two locations on the exterior wall of so that said at least one partition participates in the resistance to a test pressure prevailing in the tank and above which the wall exterior deforms, said at least one partition comprising a weakening such that it breaks beyond the test pressure.
  • the two locations are parts concaves of the outer wall so that this wall tends to move outward when the partition ruptures.
  • the tank is profiled and its transverse outline includes the shape of two C.
  • the free ends of one C's are connected to those of the other C with possibly interposition of at least minus a convex line.
  • the partition connects the generators of the two ends of one of the C.
  • the partition has, as a weakening, a thinner than the outer wall or a tear primer which causes rupture when there is a rupture pressure in the tank lower than the burst pressure, but greater than a prescribed threshold of pressure's test.
  • a row can be provided longitudinal hole, a slit-shaped longitudinal opening or also the fact that the closure weld of one of the Cs by the partition is discontinuous.
  • the invention also relates to a method for ensuring that at less a pressure-resistant tank deforms with the naked eye when there there is a pressure exceeding a test pressure but lower than the pressure at which it bursts by constituting the reservoir as defined above, the weakening may be a tear initiation or a thickness of the partition less than that of its outer wall.
  • the partitions are thus calculated so that the stress to which they are subjected does not for example not exceed three quarters of the guaranteed elastic limit of steel when the tank is subjected to the test pressure.
  • This calculation allows to define a minimum section "Sm" of the partition.
  • the invention therefore also relates to a method of manufacturing a tank consisting in manufacturing a prototype tank of the type defined above, but of which the breaking strength of the partition is not known, at pressure test the prototype and, depending on the test result, weaken or strengthen the partition and / or, to obtain at least the increase volumetric desired, to plan to weaken another partition.
  • the tank shown in Figure 1 is made of profiles in steel.
  • a first lateral profile 1 has a C-shaped cross section closed by a pole 2. The profile is closed by a weld 3 which is not only partially present along the profile.
  • a first profile is planned U-shaped cross section intermediate with branches 4, 5 are convex. The ends of the branches 4, 5 are welded by returns 6 at the ends of the shaft 2 of the profile 1.
  • the first profile intermediate has a core 7 which extends parallel to the partition shown in cross section through the pole 2.
  • a second intermediate profile is identical in shape to the first intermediate section. The ends of its branches 8, 9 are welded to the ends of the core 7 of the first profile intermediate. The welds extending along all the generators.
  • the second intermediate profile has a core 10.
  • the profiles are closed by covers which are welded on their edge.
  • a filling opening is provided in the profile who is not represented. If, as in Figure 1, the four compartments, defined by the profiles, do not communicate with each other, there are as many filling openings as well as compartments,
  • an opening 16 allowing communication between two compartments.
  • This opening is made in the partition represented by the pole 2 or in the partition represented by the cores 7 and 10.
  • the weld 12 is only partial and creates a tear initiation, so that the welded section is more larger than "Sm" while being smaller than "SM”.
  • This line can be also formed by a longitudinal row of recesses 13.
  • the tear initiation consists of three rows of holes 14.
  • the tear initiation is constituted by a longitudinal slot 15, while a hole 16 for communication between the compartments is provided below the slot 15.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

Tank comprises C-shaped transversal profile (1) ended by section (2). Profile is closed with welding (3) that is only partially along profile. This weakened welding will break first when pressure inside tank goes over testing pressure. Independent claims are also included for (a) the use of the tank, and for (b) the manufacturing process of the tank.

Description

La présente invention se rapporte aux réservoirs résistant à la pression et, plus particulièrement, à ceux destinés à contenir du gaz de pétrole liquéfié et à être montés sur un véhicule automobile.The present invention relates to reservoirs resistant to pressure and, more particularly, to those intended to contain gas liquefied petroleum and to be mounted on a motor vehicle.

La sécurité de ces réservoirs est assurée par le fait que tout d'abord, ils résistent à une pression, généralement de 30 bar, dite "pression d'épreuve" sans se déformer et sans présenter de fuite. Cette pression est définie pour être supérieure à la pression de vapeur que le gaz est susceptible d'atteindre à la température maximum prévue en usage normal du réservoir.The safety of these tanks is ensured by the fact that everything first, they resist a pressure, generally 30 bar, called "pressure "without deformation and without leaking. This pressure is defined to be greater than the vapor pressure that the gas is likely reach the maximum temperature expected in normal use of the tank.

La relation entre la température et la pression de vapeur saturante du gaz n'est vraie que si une partie seulement du réservoir contient du gaz liquide et le reste du gaz "gazeux". Cette hypothèse n'est pas toujours satisfaite, car il se peut qu'accidentellement, le réservoir soit plein de gaz liquide. Ce gaz liquide étant pratiquement incompressible, sa pression devient rapidement très importante si le réservoir n'a pas la capacité de se dilater en même temps que lui. Les réglementations en vigueur prévoient, avant l'éclatement des réservoirs sous l'effet de la pression, qu'ils soient capables de gonfler, ce que l'on appelle généralement "l'augmentation volumétrique".The relationship between temperature and vapor pressure gas saturation is only true if only part of the tank contains liquid gas and the rest of the "gaseous" gas. This assumption is not always satisfied, as it may happen that accidentally the tank is full of gas liquid. This liquid gas being practically incompressible, its pressure becomes quickly very important if the tank does not have the capacity to expand in same time as him. The regulations in force provide, before the bursting of the tanks under the effect of the pressure, that they are capable to inflate, what is generally called "volumetric increase".

On souhaite donc qu'un réservoir résistant à la pression n'éclate pas tant qu'il n'y règne pas une pression d'éclatement. On souhaite être averti, bien avant que la pression d'éclatement ne soit atteinte, que la pression a augmenté au-delà de la pression d'épreuve.We therefore hope that a pressure-resistant tank does not burst not until there is burst pressure. We want to be notified, well before the burst pressure is reached, that the pressure has increased beyond the test pressure.

L'invention y pourvoit d'une manière simple par un réservoir résistant à la pression comportant une paroi extérieure et au moins une cloison intérieure reliant deux emplacements de la paroi extérieure de manière que ladite au moins une cloison participe à la résistance à une pression d'épreuve régnant dans le réservoir et à partir de laquelle la paroi extérieure se déforme, ladite au moins une cloison comportant un affaiblissement tel qu'elle se rompt au-delà de la pression d'épreuve.The invention provides for this in a simple manner by means of a reservoir. pressure resistant with an outer wall and at least one interior partition connecting two locations on the exterior wall of so that said at least one partition participates in the resistance to a test pressure prevailing in the tank and above which the wall exterior deforms, said at least one partition comprising a weakening such that it breaks beyond the test pressure.

De préférence, les deux emplacements sont des parties concaves de la paroi extérieure en sorte que cette paroi ait bien tendance à s'écarter vers l'extérieur lorsque la cloison se rompt.Preferably, the two locations are parts concaves of the outer wall so that this wall tends to move outward when the partition ruptures.

Suivant un mode de réalisation préfèré, le réservoir est profilé et son contour transversal inclut la forme de deux C. Les extrémités libres de l'un des C sont reliées à celles de l'autre C avec éventuellement interposition d'au moins une ligne convexe. La cloison relie les génératrices des deux extrémités de l'un des C. La cloison comporte, comme affaiblissement, une moindre épaisseur que la paroi extérieure ou une amorce de déchirure qui en provoque la rupture lorsqu'il règne dans le réservoir une pression de rupture inférieure à la pression d'éclatement, mais supérieure à un seuil prescrit de pression d'épreuve.According to a preferred embodiment, the tank is profiled and its transverse outline includes the shape of two C. The free ends of one C's are connected to those of the other C with possibly interposition of at least minus a convex line. The partition connects the generators of the two ends of one of the C. The partition has, as a weakening, a thinner than the outer wall or a tear primer which causes rupture when there is a rupture pressure in the tank lower than the burst pressure, but greater than a prescribed threshold of pressure's test.

Lorsque la pression dans le réservoir dépasse la pression d'épreuve, la cloison se rompt et, en raison de la position de la cloison en regard d'une partie concave de la paroi extérieure du réservoir, cette paroi se déforme en cet endroit, ce qui constitue le signe visible à l'oeil nu que la pression dépasse la pression d'épreuve.When the pressure in the tank exceeds the pressure the partition breaks and, due to the position of the partition in look of a concave part of the outer wall of the tank, this wall is deforms in this place, which is the sign visible to the naked eye that the pressure exceeds the test pressure.

Comme amorce de déchirure on peut prévoir une rangée longitudinale de trous, une ouverture longitudinale en forme de fente ou également le fait que la soudure de fermeture de l'un des C par la cloison est discontinue.As a tear primer, a row can be provided longitudinal hole, a slit-shaped longitudinal opening or also the fact that the closure weld of one of the Cs by the partition is discontinuous.

L'invention vise également un procédé pour faire en sorte qu'au moins un réservoir résistant à la pression se déforme à l'oeil nu lorsqu'il y règne une pression dépassant une pression d'épreuve mais inférieure à la pression à laquelle il éclate en constituant le réservoir comme défini ci-dessus, l'affaiblissement pouvant être une amorce de déchirure ou une épaisseur de la cloison moindre que celle de sa paroi extérieure.The invention also relates to a method for ensuring that at less a pressure-resistant tank deforms with the naked eye when there there is a pressure exceeding a test pressure but lower than the pressure at which it bursts by constituting the reservoir as defined above, the weakening may be a tear initiation or a thickness of the partition less than that of its outer wall.

Selon l'invention, les cloisons, notamment en acier, sont ainsi calculées de façon à ce que la contrainte à laquelle elles sont soumises ne dépasse pas par exemple les trois quarts de la limite élastique garantie de l'acier quand le réservoir est soumis à la pression d'épreuve. Ce calcul permet de définir une section minimum "Sm" de la cloison. According to the invention, the partitions, in particular made of steel, are thus calculated so that the stress to which they are subjected does not for example not exceed three quarters of the guaranteed elastic limit of steel when the tank is subjected to the test pressure. This calculation allows to define a minimum section "Sm" of the partition.

On calcule ensuite les contraintes de manière à ce qu'elles soient supérieures à la limite de rupture de l'acier quand le réservoir est soumis à une pression équivalente à la pression minimale de rupture. Ce calcul permet de définir une section maximum "SM" de la cloison.We then calculate the stresses so that they are greater than the steel breaking limit when the tank is subjected to a pressure equivalent to the minimum rupture pressure. This calculation allows to define a maximum section "SM" of the partition.

On construit ensuite un prototype de réservoir que l'on teste.We then build a prototype tank that we test.

L'invention vise donc également un procédé de fabrication d'un réservoir consistant à fabriquer un prototype de réservoir du type défini ci-dessus, mais dont la résistance à la rupture de la cloison n'est pas connue, à soumettre le prototype à un essai de pression et, selon le résultat de l'essai, à affaiblir ou à renforcer la cloison et/ou, pour obtenir au moins l'augmentation volumétrique souhaitée, à prévoir d'affaiblir une autre cloison.The invention therefore also relates to a method of manufacturing a tank consisting in manufacturing a prototype tank of the type defined above, but of which the breaking strength of the partition is not known, at pressure test the prototype and, depending on the test result, weaken or strengthen the partition and / or, to obtain at least the increase volumetric desired, to plan to weaken another partition.

Le réservoir représenté à la figure 1 est constitué de profilés en acier. Un premier profilé 1 latéral a une section transversal en forme de C fermé par une hampe 2. Le profilé est fermé par une soudure 3 qui n'est présente que partiellement le long du profilé. Il est prévu un premier profilé intermédiaire de section transversale en forme de U dont les branches 4, 5 sont convexes. Les extrémités des branches 4, 5 sont soudées par des retours 6 aux extrémités de la hampe 2 du profilé 1. Le premier profilé intermédiaire a une âme 7 qui s'étend parallèlement à la cloison représentée en section transversale par la hampe 2. Un deuxième profilé intermédiaire est de forme identique au premier profilé intermédiaire. Les extrémités de ses branches 8, 9 sont soudées aux extrémités de l'âme 7 du premier profilé intermédiaire. Les soudures s'étendant le long de toutes les génératrices. Le deuxième profilé intermédiaire a une âme 10. Il est prévu enfin un second profilé 11 latéral en forme de C ouvert dont les extrémités sont soudées à nouveau par des retours aux extrémités de l'âme 10 du deuxième profilé intermédiaire.The tank shown in Figure 1 is made of profiles in steel. A first lateral profile 1 has a C-shaped cross section closed by a pole 2. The profile is closed by a weld 3 which is not only partially present along the profile. A first profile is planned U-shaped cross section intermediate with branches 4, 5 are convex. The ends of the branches 4, 5 are welded by returns 6 at the ends of the shaft 2 of the profile 1. The first profile intermediate has a core 7 which extends parallel to the partition shown in cross section through the pole 2. A second intermediate profile is identical in shape to the first intermediate section. The ends of its branches 8, 9 are welded to the ends of the core 7 of the first profile intermediate. The welds extending along all the generators. The second intermediate profile has a core 10. Finally, there is a second side profile 11 in the form of an open C, the ends of which are welded to again by returns to the ends of the core 10 of the second profile intermediate.

En bout, les profilés sont fermés par des couvercles qui sont soudés sur leur bord. On prévoit dans le profilé une ouverture de remplissage qui n'est pas représentée. Si, comme à la figure 1, les quatre compartiments, définis par les profilés, ne communiquent pas entre eux, il y a autant d'ouvertures de remplissage que de compartiments,At the end, the profiles are closed by covers which are welded on their edge. A filling opening is provided in the profile who is not represented. If, as in Figure 1, the four compartments, defined by the profiles, do not communicate with each other, there are as many filling openings as well as compartments,

Mais le plus souvent, et comme représenté à la figure 2, il est prévu une ouverture 16 permettant une communication entre deux compartiments. Cette ouverture est pratiquée dans la cloison représentée par la hampe 2 ou dans la cloison représentée par les âmes 7 et 10. En outre, et comme symbolisé à la figure 2, la soudure 12 n'est que partielle et créée une amorce de déchirure, de telle manière à ce que la section soudée soit plus grande que "Sm" tout en étant plus petite que "SM". Cette ligne peut être aussi constituée par une rangée longitudinale d'évidements 13.But more often than not, and as shown in Figure 2, it is provided an opening 16 allowing communication between two compartments. This opening is made in the partition represented by the pole 2 or in the partition represented by the cores 7 and 10. Furthermore, and as symbolized in Figure 2, the weld 12 is only partial and creates a tear initiation, so that the welded section is more larger than "Sm" while being smaller than "SM". This line can be also formed by a longitudinal row of recesses 13.

A la figure 3, l'amorce de déchirure est constituée par trois rangées de trous 14.In FIG. 3, the tear initiation consists of three rows of holes 14.

A la figure 4, l'amorce de déchirure est constituée par une fente 15 longitudinale, tandis qu'un trou 16 de communication entre les compartiments est prévu en dessous de la fente 15.In FIG. 4, the tear initiation is constituted by a longitudinal slot 15, while a hole 16 for communication between the compartments is provided below the slot 15.

Ces affaiblissements ne sont prévus, sur le premier prototype réalisé, que sur une seule des cloisons.These losses are not expected, on the first prototype realized, only on one of the partitions.

Le prototype ainsi constitué est soumis à un essai de pression conduit de la manière suivante :

  • le réservoir est rempli d'eau,
  • à l'aide d'une pompe volumétrique, on le porte à la pression d'épreuve Pe. On vérifie l'absence de déformation et de fuite.
  • on le porte ensuite à la pression minimale de rupture Pr. On vérifie qu'il ne présente toujours pas de fuite et on mesure son augmentation volumétrique : AVr.
  • on le porte ensuite à la rupture et l'on mesure la pression réelle de rupture PR et l'augmentation volumétrique ΔVR.
The prototype thus formed is subjected to a pressure test conducted as follows:
  • the tank is filled with water,
  • using a positive displacement pump, it is brought to the test pressure Pe. One checks the absence of deformation and leakage.
  • it is then brought to the minimum rupture pressure Pr. It is checked that there is still no leakage and its volumetric increase is measured: AVr.
  • it is then brought to rupture and the actual rupture pressure P R and the volumetric increase ΔV R are measured.

En fonction des pressions réellement constatées, on augmente ou on diminue le nombre de trous de façon à obtenir réellement la résistance souhaitée de la cloison.Depending on the pressures actually observed, we increase or we decrease the number of holes so as to actually obtain the resistance desired partition.

En fonction de l'augmentation volumétrique ΔVR obtenue, on crée, si elle est insuffisante, des affaiblissements qui sont réalisés dans autant de cloisons qu'il est nécessaire pour obtenir l'augmentation volumétrique voulue.Depending on the volumetric increase ΔV R obtained, we create, if it is insufficient, attenuations which are carried out in as many partitions as necessary to obtain the desired volumetric increase.

Claims (8)

Réservoir résistant à la pression, comportant une paroi extérieure et au moins une cloison intérieure reliant deux emplacements de la paroi extérieure de manière que ladite au moins une cloison (2) participe à la résistance à une pression d'épreuve, notamment de 30 bar, régnant dans le réservoir et au-delà de laquelle la paroi extérieure se déforme, caractérisé en ce que ladite au moins une cloison (2) comporte un affaiblissement (3) tel qu'elle se rompt à partir de la pression d'épreuve.Pressure resistant tank, having an outer wall and at least one interior partition connecting two locations on the wall exterior so that said at least one partition (2) participates in the resistance to a test pressure, in particular 30 bar, prevailing in the tank and beyond which the outer wall deforms, characterized in that said at least one partition (2) has a weakening (3) such that it breaks from the test pressure. Réservoir suivant la revendication 1, caractérisé en ce que les deux emplacements sont des parties concaves de la paroi extérieure.Tank according to claim 1, characterized in that the two locations are concave parts of the outer wall. Réservoir suivant la revendication 1 ou 2, caractérisé en ce que le contour transversal du réservoir inclut la forme de deux C (1,11), les extrémités libres de l'un des C étant reliées à celles de l'autre C, avec éventuellement interposition d'au moins une ligne (4,8) convexe, la cloison (2) reliant les génératrices des deux extrémités de l'un des C.Tank according to claim 1 or 2, characterized in that the transverse contour of the tank includes the shape of two C (1,11), the free ends of one of the C being connected to those of the other C, with possibly interposition of at least one convex line (4,8), the partition (2) connecting the generators of the two ends of one of the C. Réservoir suivant la revendication 1, 2 ou 3, caractérisé en ce que l'affaiblissement est une amorce de déchirure.Tank according to claim 1, 2 or 3, characterized in that weakening is the beginning of a tear. Réservoir suivant l'une des revendications 1 à 4, caractérisé en ce que l'amorce de déchirure est constituée par le fait que la cloison comporte une soudure ayant des discontinuités, une rangée de trous ou une fente, de préférence longitudinale.Tank according to one of Claims 1 to 4, characterized in that that the tear initiation is constituted by the fact that the partition comprises a weld with discontinuities, a row of holes or a slot, longitudinal preference. Réservoir suivant la revendication 1, 2 ou 3, caractérisé en ce que l'affaiblissement est constitué par le fait que la cloison est moins épaisse que la paroi extérieure.Tank according to claim 1, 2 or 3, characterized in that the weakening is constituted by the fact that the partition is thinner than the outer wall. Utilisation d'un réservoir suivant les revendications 1 à 6 comme réservoir de sécurité se déformant à l'oeil nu avant d'éclaterUse of a container according to Claims 1 to 6 as safety tank deforms with the naked eye before bursting Procédé de fabrication d'un réservoir suivant les revendications 1 à 5, caractérisé en ce qu'il consiste à fabriquer un prototype de réservoir du type défini aux revendications 1 à 5, mais dont la résistance à la rupture de la cloison n'est pas connue, à soumettre le prototype à un essai de pression et, selon le résultat de l'essai, à affaiblir ou à renforcer la cloison et/ou, pour obtenir l'augmentation volumétrique souhaitée, à prévoir d'affaiblir une autre cloison.Method of manufacturing a tank according to claims 1 to 5, characterized in that it consists in manufacturing a prototype tank of the type defined in claims 1 to 5, but the breaking strength of which partition is not known, to subject the prototype to a pressure test and, depending on the result of the test, to weaken or strengthen the partition and / or, get the desired volume increase, plan to weaken another partition.
EP00401298A 1999-07-09 2000-05-12 Burst-proof tank with a wall breaking beyond a certain pressure Withdrawn EP1067328A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9908924 1999-07-09
FR9908924A FR2796125B1 (en) 1999-07-09 1999-07-09 BREAKING-RESISTANT TANK WITH A PARTITION BREAKING BEYOND A CERTAIN PRESSURE

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EP1067328A1 true EP1067328A1 (en) 2001-01-10

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EP (1) EP1067328A1 (en)
FR (1) FR2796125B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10149701A1 (en) * 2001-08-08 2003-02-20 Ruhrgas Ag High pressure gas container, especially for natural gas, has two container sections welded together at a dividing wall, with a passage opening through the wall and a filling/draining connection at one section
DE102014221530A1 (en) * 2013-11-08 2015-05-28 Bayerische Motoren Werke Aktiengesellschaft Pressurized gas tank with partial volumes provided in the tank storage space

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0044255A1 (en) * 1980-07-11 1982-01-20 Societe Anonyme Des Etablissements Lemer & Cie Container for transporting irradiated combustion elements
EP0068473A1 (en) * 1981-07-01 1983-01-05 Gerhard KG Pressure tank
EP0182242A2 (en) * 1984-11-23 1986-05-28 Siemens Aktiengesellschaft Apparatus for protecting water conduits against pressure waves
DE9303295U1 (en) * 1993-03-06 1994-07-07 Bernhardt Apparatebau Gmbh Co Air cylinder indicator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0044255A1 (en) * 1980-07-11 1982-01-20 Societe Anonyme Des Etablissements Lemer & Cie Container for transporting irradiated combustion elements
EP0068473A1 (en) * 1981-07-01 1983-01-05 Gerhard KG Pressure tank
EP0182242A2 (en) * 1984-11-23 1986-05-28 Siemens Aktiengesellschaft Apparatus for protecting water conduits against pressure waves
DE9303295U1 (en) * 1993-03-06 1994-07-07 Bernhardt Apparatebau Gmbh Co Air cylinder indicator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10149701A1 (en) * 2001-08-08 2003-02-20 Ruhrgas Ag High pressure gas container, especially for natural gas, has two container sections welded together at a dividing wall, with a passage opening through the wall and a filling/draining connection at one section
DE102014221530A1 (en) * 2013-11-08 2015-05-28 Bayerische Motoren Werke Aktiengesellschaft Pressurized gas tank with partial volumes provided in the tank storage space

Also Published As

Publication number Publication date
FR2796125A1 (en) 2001-01-12
FR2796125B1 (en) 2001-08-10

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