WO1993004316A1 - Inviolable capsule for compressed gas bottle with leak indicator - Google Patents

Inviolable capsule for compressed gas bottle with leak indicator Download PDF

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Publication number
WO1993004316A1
WO1993004316A1 PCT/FR1991/000661 FR9100661W WO9304316A1 WO 1993004316 A1 WO1993004316 A1 WO 1993004316A1 FR 9100661 W FR9100661 W FR 9100661W WO 9304316 A1 WO9304316 A1 WO 9304316A1
Authority
WO
WIPO (PCT)
Prior art keywords
capsule
compressed gas
side wall
tap
leak
Prior art date
Application number
PCT/FR1991/000661
Other languages
French (fr)
Inventor
Frank Bensussan
Original Assignee
Frank Bensussan
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 Frank Bensussan filed Critical Frank Bensussan
Priority to PCT/FR1991/000661 priority Critical patent/WO1993004316A1/en
Publication of WO1993004316A1 publication Critical patent/WO1993004316A1/en

Links

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
    • F17C13/06—Closures, e.g. cap, breakable member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D55/00—Accessories for container closures not otherwise provided for
    • B65D55/02—Locking devices; Means for discouraging or indicating unauthorised opening or removal of closure
    • 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
    • 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
    • F17C2205/05—Vessel or content identifications, e.g. labels
    • 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
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
    • 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
    • F17C2270/00—Applications
    • F17C2270/07—Applications for household use
    • F17C2270/0736—Capsules, e.g. CO2

Definitions

  • the subject of the present invention is a tamper-evident capsule for compressed gas bottles, with a leak indicator. It is intended more particularly for compressed gas bottles for professional use equipped with taps with threaded or tapped fittings, but can be adapted to any container containing a gas or a liquid under pressure.
  • the capsules used to date for compressed gas cylinders for professional use are simple thread protectors. Tamper-evident capsules have been produced for liquefied petroleum gas cylinders, but these devices cannot be adapted to compressed gas cylinders. This is usually plugs with thread requiring complex and costly installations for their Mise in place, or capsules require a tool for their removal and preventing the plug from being removed.
  • the device according to the present invention eliminates all these drawbacks. Indeed, it makes it possible to produce a tamper-evident capsule for compressed gas bottles for professional use, this capsule being produced in one piece, which can be posed by simple pressure of the finger and can be removed without tools and which can receive an indicator of flight.
  • FIG. 1 shows the device in place on a tap for a cylinder of compressed gas.
  • FIG. 2 represents the device seen according to arrow A in FIG. 1.
  • Figures 3, 4 and 5 are vertical axial sections along the arrows B-B of Figure 2, respectively showing the device before installation, after breakage for removal and, finally, equipped with the leak detector.
  • Figure 6 is an enlarged view of the leak detector.
  • Figure 7 shows the device suitable for valves with internal thread connection.
  • the device consists of a capsule 1 of dimensions suitable for enabling it to cover the external connection 21 of a ' tap 20 of a compressed gas bottle, formed of a cylindrical side wall 6 and of a bottom 7, and comprising on the one hand two lateral ears 2 located in the extension of said side wall, resting on the screwing square 22 of the tap 20 to prevent rotation of the capsule, and whose eccentric position does not allows only one possibility of establishment and, on the other hand, an extraction ring 3.
  • the capsule is made of semi-rigid plastic material and is provided with breaking points 5 to 'its side wall 6, as well as one or more notches 4 which can engage in the threading or the tapping of the external connector 21 of the tap 20.
  • the shape of these notches is such that the capsule 1 can easily be placed on the external connector 21, but that it is impossible to remove it without breaking the initi es of rupture 5.
  • the ring 3, integral with the capsule 1 and fixed to the upper part of its side wall 6, makes it possible, by exerting a trac ⁇ tion along the arrow C in FIG. 4, to break the primers of rupture 5, which has the effect of disengaging the notches 4 from the thread of the connector 15 of the tap, and thus releasing the capsule which can then be removed, but cannot be reused.
  • the bottom 7 of the capsule 1 projects beyond the side wall 6 of so as to form a collar 10 intended to allow the attachment of a marking label and to facilitate the handling of the capsule. In FIG. 5, one can see the capsule 1 equipped with a leak detector 11.
  • This consists of a cylindrical body 12 sliding in a hole 8 provided in the center of the bottom 7 of the capsule, and of which the end located outside of the latter has a conical bulge 13 for inserting the detector in the hole 8 and preventing it from coming out.
  • the other end of the leak detector 11 is provided with a double conical bulge formed, on the one hand, by a small cone 14 with a diameter slightly greater than that of the gas outlet orifice 22 of the tap 20, and being able to penetrate by force and in a leaktight manner thereon, on the other hand, of a large cone 15 resting on the bottom of the external connection 21 of said tap and preventing the detector from leaving the capsule.
  • Figure 7 shows an alternative embodiment for valves for compressed gas containers equipped with an external connection 21 with thread. While in the case of threading ( Figures 3. 4 and 5), the notch (s) 4 are arranged on the inner surface of the side wall 6 of the capsule 1, for taps with - thread ( Figure 7), the bottom 7 of the capsule comprises, on the side opposite to the extraction ring 3. a single tab 16 directed inwards and carrying at least one notch engaging in said tapping, the primers for ruptures 5 being located in such a way that their opening causes the lifting of the leg 16 by releasing the capsule 1. In this case, the lateral ears 2 have at their end an internal allowance taking place behind the bulge formed by the external connector 21 and improving the maintenance of the capsule.
  • the device which has just been described is particularly suitable for production of guarantee and safety capsules for compressed gas cylinders for professional use fitted with standard valves such as "neutral gases and fuels” or "fuels and acetylene"
  • standard valves such as "neutral gases and fuels” or "fuels and acetylene"

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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

The inviolable capsule (1) for compressed gas bottles, with leak indicator is configured like a bowl capring the external threaded connector (21) of the cock (20) and comprising, one or a plurality of notches (4) engaged in the threading of said connector, said notch or notches being disengageable only by breaking the capsule along rupture lines, by means of a pulling ring (3) integral with the capsule, and side lugs in an offset position authorizing only one setting-in-place possiblity and bearing on the screwing square (22) of the cock (20) to prevent the capsule (1) from being removed by unscrewing, and finally an optional piston which is force-fitted in the gas outlet orifice so that said piston is visibly driven outside the capsule in the case of leakage. The capsule is intended more particularly to compressed gas bottles of professional use fitted with cocks having threading or tapping connectors, but may be adapted to any container holding a pressure gas or liquid.

Description

CAPSULE INVIOLABLE POUR BOUTEILLES DE GAZ COMPRIME AVEC INDICATEUR DE FUITEINVIOLABLE CAPSULE FOR COMPRESSED GAS BOTTLES WITH LEAK INDICATOR
La présente invention a pour objet une capsule inviolable pour bouteilles de gaz comprimé, avec indicateur de fuite. Elle est destinée plus particulièrement aux bouteilles de gaz comprimé à usage professionnel équipées de robinets avec raccords à filetage ou à taraudage, mais peut être adaptée à tout réci¬ pient contenant un gaz ou un liquide sous pression. Les capsules utilisées à ce jour pour les bouteilles de gaz comprimé à usage professionnel sont de simples protège-filetage. Il a été réalisé des capsules inviolables pour les bouteilles de gaz de pétrole liquéfié, mais ces dispositifs ne sont pas adaptables sur les bouteilles de gaz comprimé. Il s'agit le plus souvent de bouchons avec filetage nécessitant des installations complexes et coûteuses pour leur mise- en place, ou de capsules exigeant' un outil pour leur démontage et empêchant le bouchon d'être retiré.The subject of the present invention is a tamper-evident capsule for compressed gas bottles, with a leak indicator. It is intended more particularly for compressed gas bottles for professional use equipped with taps with threaded or tapped fittings, but can be adapted to any container containing a gas or a liquid under pressure. The capsules used to date for compressed gas cylinders for professional use are simple thread protectors. Tamper-evident capsules have been produced for liquefied petroleum gas cylinders, but these devices cannot be adapted to compressed gas cylinders. This is usually plugs with thread requiring complex and costly installations for their Mise in place, or capsules require a tool for their removal and preventing the plug from being removed.
Le dispositif suivant la présente invention supprime tous ces inconvénients. En effet, il permet de réaliser une capsule inviolable pour les bouteilles de gaz comprimés à usage profes¬ sionnel, cette capsule étant fabriquée en une seule pièce, pouvant se poser par simple pression du doigt et se retirer sans outillage et pouvant recevoir un indicateur de fuite. Il est constitué par une capsule en forme de cuvette venant coiffer le raccord fileté extérieur du robinet et comportant, d'abord un ou plusieurs crans s 'engageant dans le filetage dudit raccord, ce ou ces crans ne pouvant être dégagés qu'en brisant la capsule suivant des amorces de rupture, grâce à un anneau de traction solidaire de la capsule, ensuite, des oreilles latérales à position excentrée n'autorisant qu'une seule possibilité de mise en place et s'appuyant sur le carré de vissage du robinet pour empêcher la capsule d'être retirée par dévissage, enfin, d'un piston optionnel engagé à force dans l'orifice de sortie du gaz de. manière à ce qu'il soit chassé de manière visible à l'extérieur de la capsule en cas de fuite. Sur les dessins annexés, donnés à titre d'exemple non lilitatif d'une des formes de réalisation de l'objet de l'invention : La figure 1 montre le dispositif en place sur un robinet pour bouteille de gaz comprimé. La figure 2 représente le dispositif vu selon la flèche A de la figure 1.The device according to the present invention eliminates all these drawbacks. Indeed, it makes it possible to produce a tamper-evident capsule for compressed gas bottles for professional use, this capsule being produced in one piece, which can be posed by simple pressure of the finger and can be removed without tools and which can receive an indicator of flight. It consists of a cup-shaped capsule covering the external threaded connection of the tap and comprising, first of all, one or more notches engaging in the threading of said connection, this or these notches being able to be released only by breaking the capsule following incipient fractures, thanks to a pulling ring secured to the capsule, then, lateral ears in an eccentric position allowing only one possibility of positioning and resting on the screwing square of the tap to prevent the capsule from being removed by unscrewing, finally, an optional piston forced into the gas outlet orifice. so that it is visibly driven out of the capsule in the event of a leak. In the accompanying drawings, given by way of non-limiting example of one of the embodiments of the subject of the invention: FIG. 1 shows the device in place on a tap for a cylinder of compressed gas. FIG. 2 represents the device seen according to arrow A in FIG. 1.
Les figures 3, 4 et 5 sont des coupes axiales verticales suivant les flèches B-B de la figure 2, montrant respectivement le dispo¬ sitif avant mise en place, après rupture pour enlèvement et, enfin, équipé du détecteur de fuite.Figures 3, 4 and 5 are vertical axial sections along the arrows B-B of Figure 2, respectively showing the device before installation, after breakage for removal and, finally, equipped with the leak detector.
La figure 6 est une vue agrandie du détecteur de fuite. La figure 7 représente le dispositif adapté aux robinets avec raccord à filetage interne.Figure 6 is an enlarged view of the leak detector. Figure 7 shows the device suitable for valves with internal thread connection.
Le dispositif, figure 1 à 7, est constitué d'une capsule 1 de dimensions propres à lui permettre de coiffer le raccord externe 21 d'un' robinet 20 de bouteille de gaz comprimé, formée d'une paroi latérale 6 cylindrique et d'un fond 7, et comportant d'une part deux oreilles latérales 2 situées dans le prolongement de ladite paroi latérale, s'appuyant sur le carré de vissage 22 du robinet 20 pour empêcher la rotation de la capsule, et dont la position excentrée n'autorise qu'une seule possibilité de mise en place et, d'autre part, un anneau d'extraction 3. La capsule est réalisée en matière plastique semi-rigide et est munie d'amorces de rupture 5 sur' sa paroi latérale 6, ainsi que d'un ou plusieurs crans 4 pouvant s'engager dans le filetage ou le taraudage du raccord externe 21 du robinet 20. La forme de ces crans est telle que l'on puisse facilement mettre en place la capsule 1 sur le raccord externe 21, mais qu'il soit impossible de le retirer sans rompre les amorces de rupture 5. L'anneau 3, solidaire de la capsule 1 et fixé à la partie supérieure de sa paroi latérale 6, permet, en exerçant une trac¬ tion suivant la flèche C de la figure 4, de rompre les amorces de rupture 5, ce qui a pour effet de dégager les crans 4 du filetage du raccord 15 du robinet, et de libérer ainsi la capsule qui peut alors être retirée, mais ne peut pas être réutilisée. Le fond 7 de la capsule 1 déborde de la paroi latérale 6 de façon à former une collerette 10 destinée à permettre l'accrochage d'une étiquette de marquage et à faciliter la manipulation de la capsule. Sur la figure 5, on peut voir la capsule 1 équipée d'un détec- teur de fuite 11. Celui-ci est constitué d'un corps cylindrique 12 coulissant dans un trou 8 prévu au centre du fond 7 de la capsule, et dont l'extrémité située à l'extérieur de cette dernière comporte un renflement conique 13 permettant d'insérer le détec¬ teur dans le trou 8 et l'empêchant d'en ressortir. L'autre extré- mité du détecteur de fuite 11 est pourvue d'un double renflement conique formé, d'une part, d'un petit cône 14 d'un diamètre légèrement supérieur à celui de l'orifice de sortie de gaz 22 du robinet 20, et pouvant pénétrer à force et de façon étanche dans celui-ci, d'autre part, d'un grand cône 15 s'appuyant sur le fond du raccord externe 21 dudit robinet et interdisant au détec¬ teur de sortir de la capsule. Lors de la mise en place de la capsule'!, le détecteur de fuite 11 est enfoncé dans l'orifice de. sortie du gaz 22, le renflement conique 13 affleurant à l'extérieur de la capsule. En cas de fuite, le gaz exerce sur le petit cône 14 une pression chassant le détecteur vers l'extérieur jusqu'à ce que le grand cône vienne appuyer sur le fond 7 de la capsule et que le corps cylindrique soit presque entièrement sorti de cette dernière, signalant ainsi la fuite de façon visible. Un évent 9» constitué d'un trou pratiqué dans la paroi latérale 6 de la capsule permet au gaz de s'échapper sans provoquer l'arrachement de cette dernière.The device, FIGS. 1 to 7, consists of a capsule 1 of dimensions suitable for enabling it to cover the external connection 21 of a ' tap 20 of a compressed gas bottle, formed of a cylindrical side wall 6 and of a bottom 7, and comprising on the one hand two lateral ears 2 located in the extension of said side wall, resting on the screwing square 22 of the tap 20 to prevent rotation of the capsule, and whose eccentric position does not allows only one possibility of establishment and, on the other hand, an extraction ring 3. The capsule is made of semi-rigid plastic material and is provided with breaking points 5 to 'its side wall 6, as well as one or more notches 4 which can engage in the threading or the tapping of the external connector 21 of the tap 20. The shape of these notches is such that the capsule 1 can easily be placed on the external connector 21, but that it is impossible to remove it without breaking the initi es of rupture 5. The ring 3, integral with the capsule 1 and fixed to the upper part of its side wall 6, makes it possible, by exerting a trac¬ tion along the arrow C in FIG. 4, to break the primers of rupture 5, which has the effect of disengaging the notches 4 from the thread of the connector 15 of the tap, and thus releasing the capsule which can then be removed, but cannot be reused. The bottom 7 of the capsule 1 projects beyond the side wall 6 of so as to form a collar 10 intended to allow the attachment of a marking label and to facilitate the handling of the capsule. In FIG. 5, one can see the capsule 1 equipped with a leak detector 11. This consists of a cylindrical body 12 sliding in a hole 8 provided in the center of the bottom 7 of the capsule, and of which the end located outside of the latter has a conical bulge 13 for inserting the detector in the hole 8 and preventing it from coming out. The other end of the leak detector 11 is provided with a double conical bulge formed, on the one hand, by a small cone 14 with a diameter slightly greater than that of the gas outlet orifice 22 of the tap 20, and being able to penetrate by force and in a leaktight manner thereon, on the other hand, of a large cone 15 resting on the bottom of the external connection 21 of said tap and preventing the detector from leaving the capsule. During the establishment of the capsule! ', The leak detector 11 is pressed into the hole. gas outlet 22, the conical bulge 13 flush with the outside of the capsule. In the event of a leak, the gas exerts on the small cone 14 a pressure driving the detector outwards until the large cone comes to press on the bottom 7 of the capsule and the cylindrical body is almost entirely removed from this last, visibly signaling the leak. A vent 9 "consisting of a hole made in the side wall 6 of the capsule allows the gas to escape without causing the latter to tear off.
La figure 7 montre une variante d'exécution destinée aux robinets pour récipients de gaz comprimé équipés d'un raccord externe 21 à taraudage. Alors que dans le cas de filetage (figures 3. 4 et 5), le ou les crans 4 sont disposés sur la surface intérieure de la paroi latérale 6 de la capsule 1, pour les robinets à - taraudage (figure 7), le fond 7 de la capsule comporte, du côté opposé à l'anneau d'extraction 3. une patte unique 16 dirigée vers l'intérieur et portant au moins un cran s 'engageant dans ledit taraudage, les amorces de ruptures 5 étant situées de telle manière que leur ouverture provoque le soulèvement de la patte 16 en libérant la capsule 1. Dans ce cas, les oreilles latérales 2 comportent à leur extrémité une surépaisseur interne prenant place derrière le renflement formé par le raccord externe 21 et améliorant le maintien de la capsule . Grâce à sa facilité d ' utilisation et en particulier à la possibilité de pose et d ' enlèvement sans outil , grâce à son détecteur de fuite et à son faible coût de revient , le dispositif qui vient d ' être décrit se prête particulièrement bien à la réalisation de capsules de garantie et de sécurité pour bouteilles de gaz comprimé à usage professionnel équipées de robinets normalisés type "gaz neutres et carburants" ou type "carburants et acétylène" Le positionnement des divers éléments constitutifs donnent à ce dispositif un maximum d ' effets utiles qui n ' avaient pas été obtenus à ce jour par des dispositifs similaires . Figure 7 shows an alternative embodiment for valves for compressed gas containers equipped with an external connection 21 with thread. While in the case of threading (Figures 3. 4 and 5), the notch (s) 4 are arranged on the inner surface of the side wall 6 of the capsule 1, for taps with - thread (Figure 7), the bottom 7 of the capsule comprises, on the side opposite to the extraction ring 3. a single tab 16 directed inwards and carrying at least one notch engaging in said tapping, the primers for ruptures 5 being located in such a way that their opening causes the lifting of the leg 16 by releasing the capsule 1. In this case, the lateral ears 2 have at their end an internal allowance taking place behind the bulge formed by the external connector 21 and improving the maintenance of the capsule. Thanks to its ease of use and in particular to the possibility of installation and removal without tools, thanks to its leak detector and its low cost price, the device which has just been described is particularly suitable for production of guarantee and safety capsules for compressed gas cylinders for professional use fitted with standard valves such as "neutral gases and fuels" or "fuels and acetylene" The positioning of the various constituent elements gives this device maximum useful effects which had not been obtained to date by similar devices.

Claims

REVENDICATIONS
1° Capsule inviolable pour bouteilles de gaz comprimé, pouvant comporter un indicateur de fuite, destinée en particulier aux bouteilles de gaz comprimé à usage professionnel équipées de robinets avec raccords à filetage ou à taraudage, mais pouvant être adaptée à tout récipient contenant un gaz ou un liquide sous pression, et pouvant être mis en place par simple pression du doigt et retirée sans outillage, caractérisé par une capsule (1) en forme de cuvette, réalisée en iratière plastique semi-rigide venant coiffer le raccord externe (21) du robinet (20) et compor- tant, d'abord, un ou plusieurs crans (4) s'engageant dans le filetage ou le taraudage dudit raccord externe (21), ce ou ces crans ne pouvant être dégagés qu'en .brisant la capsule suivant des amorces de rupture (5). situées sur sa paroi latérale (6), grâce à un anneau de traction (3) solidaire de ladite capsule, ensuite, deux oreilles latérales (2) situées dans le prolongement de ladite paroi latérale, s'appuyant sur le carré de vissage (22) du robinet (20) pour empêcher la capsule (1) d'être retirée par dévissage et dont la position excentrée n'autorise qu'une seule possibilité de mise en place de ladite capsule, et enfin, un détecteur de fuite (11) constitué d'un corps cylindrique (12) coulissant dans un trou (8) prévu au centre du fond (7) de ladite capsule, et dont une extrémité peut pénétrer à fcrce et de façon étanche dans l'orifice de sortie de gaz (22) du robinet (20), de manière à ce que le détecteur de fuite soit poussé de façon visible à l'extérieur de la capsule (1) en cas de fuite de gaz.1 ° Tamper-proof cap for compressed gas cylinders, which may include a leak indicator, intended in particular for compressed gas cylinders for professional use fitted with taps with threaded or tapped fittings, but which can be adapted to any container containing a gas or a liquid under pressure, and which can be put in place by simple finger pressure and removed without tools, characterized by a capsule (1) in the form of a bowl, made of semi-rigid plastic material covering the external connection (21) of the tap (20) and comprising, firstly, one or more notches (4) engaging in the threading or tapping of said external connection (21), this or these notches can only be released by breaking the capsule. following primers of rupture (5). located on its side wall (6), thanks to a pulling ring (3) integral with said capsule, then two side ears (2) located in the extension of said side wall, resting on the screwing square (22 ) of the tap (20) to prevent the capsule (1) from being removed by unscrewing and whose eccentric position allows only one possibility of fitting said capsule, and finally, a leak detector (11) consisting of a cylindrical body (12) sliding in a hole (8) provided in the center of the bottom (7) of said capsule, and one end of which can penetrate tightly and tightly into the gas outlet orifice (22 ) from the tap (20), so that the leak detector is visibly pushed outside the capsule (1) in the event of a gas leak.
2° Dispositif suivant la revendication 1, se caractérisant pε.r le fait que le ou les crans (4) sent disposés sur la surface inté¬ rieure de la paroi latérale (6) de la capsule (1), pour s'adapter aux robinets comportant un raccord externe (21) à filetage. 3° Dispositif suivant la revendication 1, se caractérisant par le fait que pour les robinets comportant un raccord externe (21) à taraudage, le fond (7) de la capsule (1) comporte, du côté opposé à l'anneau d'extraction (3), une patte (16) unique dirigée vers l'int rieur et portant au moins un cran (4) s'engageant dans ledit taraudage, le:s amorces de ruptures (5) étant situées de telle manière que leur ouverture provoque le soulèvement de la patte (16) en libérant la capsule (1) et les oreilles latérales (2) comportent à leur extrémité une surépaisseur interne prenant place derrière le renflement formé par le raccord externe (21) pour 5-méliorer le maintien de la capsule.2 ° Device according to claim 1, characterized pε.r the fact that the notch (s) (4) feels disposed on the inner surface of the side wall (6) of the capsule (1), to adapt to valves comprising an external connection (21) with thread. 3 ° Device according to claim 1, characterized in that for taps having an external connection (21) with internal thread, the bottom (7) of the capsule (1) comprises, on the side opposite to the extraction ring (3), a single tab (16) directed inwards and carrying at least one notch (4) engaging in said tapping, the: s incipient fractures (5) being located in such a way that their opening causes lifting the tab (16) by releasing the capsule (1) and the lateral ears (2) have at their end an internal thickening taking place behind the bulge formed by the external connector (21) to 5-improve the maintenance of the capsule.
4° Dispositif suivant l'une quelconque des revendications précé¬ dentes, se caractérisant par le fait que le fond (7) de la capsule (1) déborde de. la paroi latérale (6) de façon à former une collerette (10) destinée à permettre l'accrochage d'une éti¬ quette de marquage et à faciliter la manipulation de la capsule. 5° Dispositif suivant l'une quelconque des revendications précé¬ dentes, se caractérisant par le fait que l'extrémité du détecteur de fuite (11) située à l'extérieur de la capsule (1) comporte un renflement conique (13) permettant de l'insérer dans le trou (8) du fond (7) de celle-ci et l'empêchant d'en ressortir, l'autre extrémité étant pourvue d'un renflement conique (15) s'appuyant sur le fond du raccord externe (21) du robinet (20) et interdisant au détecteur de sortir de la capsule (1). 6° Dispositif suivant la revendication 5, se caractérisant par le fait que l'extrémité du détecteur de fuite (11) située à l'intérieur de la capsule (1) est pourvue d'un second renflement conique formé d'un petit cône (14) d'un diamètre légèrement supérieur à celui de l'orifice de sortie de gaz (22) du robinet (20), et pouvant pénétrer de façon étanche dans celui-ci.4 ° Device according to any one of the preceding claims, characterized in that the bottom (7) of the capsule (1) overflows. the side wall (6) so as to form a collar (10) intended to allow the attachment of a labeling label and to facilitate the handling of the capsule. 5. Device according to any one of the preceding claims, characterized in that the end of the leak detector (11) situated outside the capsule (1) comprises a conical bulge (13) making it possible to insert it into the hole (8) in the bottom (7) thereof and preventing it from coming out, the other end being provided with a conical bulge (15) resting on the bottom of the external connector (21) of the tap (20) and preventing the detector from leaving the capsule (1). 6. Device according to claim 5, characterized in that the end of the leak detector (11) located inside the capsule (1) is provided with a second conical bulge formed by a small cone ( 14) of a diameter slightly greater than that of the gas outlet orifice (22) of the valve (20), and capable of sealingly penetrating therein.
7° Dispositif suivant l'une quelconque des revendications précé¬ dentes, se caractérisant par le fait qu'un évent (9), constitué d'un trou pratiqué dans la paroi latérale (6) de la capsule (1) permet, en cas de fuite, au gaz de s'échapper sans provoquer l'arrachement de cette dernière. 7. Device according to any one of the preceding claims, characterized in that a vent (9), consisting of a hole made in the side wall (6) of the capsule (1) allows, in case gas, to escape without causing it to tear off.
PCT/FR1991/000661 1991-08-12 1991-08-12 Inviolable capsule for compressed gas bottle with leak indicator WO1993004316A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/FR1991/000661 WO1993004316A1 (en) 1991-08-12 1991-08-12 Inviolable capsule for compressed gas bottle with leak indicator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FR1991/000661 WO1993004316A1 (en) 1991-08-12 1991-08-12 Inviolable capsule for compressed gas bottle with leak indicator

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103542255A (en) * 2013-10-29 2014-01-29 洛阳万基金属钠有限公司 Liquid chlorine filling steel bottle clamp

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2134252A1 (en) * 1971-04-29 1972-12-08 Utilisation Ration Gaz
US3851661A (en) * 1973-02-14 1974-12-03 J Fernandez Fluid flow regulator and pressure indicator
FR2358333A1 (en) * 1976-07-12 1978-02-10 Totalgaz Cie Fse Sealed cap for gas containers - has asymmetric tooth allowing screwing on but preventing unscrewing until locking nut is broken along prescribed rupture line
FR2547897A1 (en) * 1983-06-21 1984-12-28 Mendes Victorin Reusable and tamperproof safety cap for closing containers
FR2647184A1 (en) * 1989-05-17 1990-11-23 France Prod Oxygenes Co Tamperproof capsule for gas cylinders
FR2659420A1 (en) * 1990-03-07 1991-09-13 Benussan Frank Tamperproof cap for cylinders of compressed gas, with leakage indicator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2134252A1 (en) * 1971-04-29 1972-12-08 Utilisation Ration Gaz
US3851661A (en) * 1973-02-14 1974-12-03 J Fernandez Fluid flow regulator and pressure indicator
FR2358333A1 (en) * 1976-07-12 1978-02-10 Totalgaz Cie Fse Sealed cap for gas containers - has asymmetric tooth allowing screwing on but preventing unscrewing until locking nut is broken along prescribed rupture line
FR2547897A1 (en) * 1983-06-21 1984-12-28 Mendes Victorin Reusable and tamperproof safety cap for closing containers
FR2647184A1 (en) * 1989-05-17 1990-11-23 France Prod Oxygenes Co Tamperproof capsule for gas cylinders
FR2659420A1 (en) * 1990-03-07 1991-09-13 Benussan Frank Tamperproof cap for cylinders of compressed gas, with leakage indicator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103542255A (en) * 2013-10-29 2014-01-29 洛阳万基金属钠有限公司 Liquid chlorine filling steel bottle clamp
CN103542255B (en) * 2013-10-29 2016-02-17 洛阳万基金属钠有限公司 A kind of liquid chlorine filling steel cylinder jig

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