Abstract:
Valve device (12, 52) to prevent refilling of a pressure container (10), which valve device (12, 52) comprises a valve housing (40) having a valve chamber (43) provided with two ports (41, 42), a valve body (44) placed in the valve chamber (43) and provided with an axially movable and spring-loaded valve cone (45) having a valve seat (46), which seals against the valve body (44) when the valve cone (45) is unloaded, the valve body (44) limiting the valve chamber (43) at one port (41 ) thereof and the valve chamber (43) being provided with a non-return valve (47) at the other port (42) thereof, which non-return valve (47) is arranged to sealingly abut against the valve housing (40) at a positive pressure in the valve chamber (43). The valve housing (40) is provided with a filling channel (480, 880), which extends from a position between the two ports (41, 42) of the valve chamber (43) through the valve housing (40) and out through the outer surface (481, 881) thereof and that an, at least initially, movable interrupt member (482, 882) is connected to the filling channel (480, 880) to close the filling channel (480, 880) after the pressure container (10) has been filled with pressure fluid. The invention also concerns a pressure container provided with such a valve device.
Abstract:
The invention is directed to a valve (2) for a compressed gas cylinder (4), comprising: a valve body (6) with an inlet (8), an outlet (10) and a passage (12) connecting the inlet with the outlet; a shut-off device (20) of the passage (12) with an actuating pin (42) extending in the passage; a check-valve (18) between the shut-off device (20) and the inlet (8), the check valve comprising a seat (30) and a movable closing member (26) initially held at a position distant from said seat by contact with a guiding surface (22a) and movable past said position by the pin (42) so as to cooperate with said seat (30) and prevent a refilling flow of gas from the outlet (10) to the inlet (8). The guiding surface (22a) is on a tubular portion (22) fixed to the valve body (6) and comprising at least one radial aperture (24) so as to allow the refilling flow of gas to by-pass the closing member (26) when in the distant position.
Abstract:
Robinet de fluide sous pression à remplissages multiples, notamment pour un réservoir de gaz sous pression, comprenant un corps (1 ) comportant une embase (4) destinée à être fixée au niveau d'un orifice d'un réservoir sous pression, le corps (1 ) définissant un circuit (5) interne de soutirage/remplissage de fluide s'étendant entre une extrémité amont (2) destinée à être mise en relation avec le volume de stockage d'un réservoir et une extrémité aval (3) destinée à être mise en relation avec un organe utilisateur recevant ou distribuant du gaz, le robinet comprenant, disposés en série dans le circuit (5), un clapet (6) de pression résiduelle et un clapet (7) d'isolation distinct du clapet (6) de pressions résiduelle, le robinet comprenant un organe (8) d'actionnement du clapet (7) d'isolation pour commander sélectivement l'obstruction ou non du circuit (5), l'organe (8) d'actionnement étant mobile entre une première position dite « de fermeture » dans laquelle le clapet (7) d'isolation obstrue le circuit (5) et une seconde position dite « de soutirage » dans laquelle le clapet (7) d'isolation n'obstrue pas le circuit (5), caractérisé en ce que le clapet (6) de pression résiduelle est situé en amont du clapet (7) d'isolation et en ce que l'organe (8) d'actionnement est déplaçable dans une troisième position dite « de remplissage» dans laquelle l'organe (8) d'actionnement contraint le clapet (7) d'isolation à ne pas obstruer le circuit (5) et dans laquelle le clapet de pression (6) de pression résiduelle est déplacé dans une position d'ouverture n'obstruant pas le circuit (5), quel que soit le différentiel de pression de part et d'autre du clapet (6) de pression résiduelle.
Abstract:
A safety relief fill valve adapted to being an interface for filling and relieving excess pressure from a closed fluid system. An insert shell retains a piston member for movement between fluid input and fluid holding configurations, the piston member being resiliently biased toward fluid holding configuration. When in fluid holding configuration, the piston member sealingly engages an inlet bore of the insert shell. When in fluid input configuration, the piston member allows fluid flow through the inlet bore. A housing receives the insert shell, thereby limiting relative axial movement and forming a cavity between a portion of the housing the insert shell. This cavity provides mechanical guidance and a flow channel for an overpressure relief system having fluid retaining and fluid relief configurations, the overpressure relief system being elastically biased toward fluid retaining configuration. The elastic bias is overcome responsive to excess pressure within the closed fluid system.
Abstract:
Tête de remplissage et de distribution de gaz destinée à être disposée dans l'orifice d'un réservoir (1) de stockage de gaz sous pression, la tête (2) comprenant une portion (21) de montage destinée à être logée dans l'orifice du réservoir et une portion de détente abritant un dispositif (22) de pré-détente, le dispositif de pré-détente (22) étant agencé relativement à la portion (21) de montage pour se loger au moins partiellement à l'intérieur du réservoir lorsque la tête est en position montée, caractérisée en ce qu'elle comprend une interface (3) de connexion destinée à coopérer de façon amovible avec un dispositif de commande de remplissage et/ou du soutirage de gaz à partir du réservoir.
Abstract:
Disclosed herein is an overflow shutoff valve for a liquefied petroleum gas container. The overflow shutoff valve includes: a gas inlet mounted at the gas container; a safety valve protrudingly formed at one side of the upper portion of the gas inlet for discharging the internal pressure of the gas container when the internal pressure is rapidly increased; a gas outlet protrudingly formed at the other side of the upper portion of the gas inlet for supplying gas to a gas appliance; a valve handle for vertically controlling a valve stem mounted on a controlling part protruding from the upper portion of the gas inlet; a gas inflow and outflow hole located between the gas inlet and the controlling part for allowing inflow and outflow of the gas; a cylinder fit into the inner circumference of the gas inlet; and a ball positioned inside the cylinder, the cylinder and the ball being adapted to normally discharge the gas contained in the gas container and regulate a gas flow to prevent an excessive outflow of the gas, wherein the cylinder has an upper part, a lower part and an intermediate part between the upper and lower parts, each of which has the same thickness, and is made of a hollow pipe, the upper part having a plurality of upper incised slots of a uniform length vertically formed on the circumference thereof in an axial direction in such a manner as to be spaced apart from one another at regular intervals and be opened upwardly, and the lower part having a plurality of lower incised slots of a uniform length vertically formed on the circumference thereof in the axial direction in such a manner as to be spaced apart from one another at regular intervals and be opened downwardly.
Abstract:
A gas cylinder (100) in the neck (20) of which is installed a balanced valve (26). The valve is fitted in the outlet of the cylinder and its output emerges into a recess (22) which opens to the top surface (23) of the cylinder. Thus the valve is protected from physical damage. A thread (27) in the bore enables the attachment of fittings such as a regulator or a filling device (not shown) which cooperate with the valve (26) to control passage of gas from or into the cylinder.
Abstract:
A storage system for hazardous gas using metal or complex material canisters requires a valve assembly (10, 80) to control safely the delivery of gas, e.g., hydrogen, to the application (fuel cell, etc.). The shut-off valve assembly (120) is in sequential series with the flow control valve (100). The shut-off valve has two purposes, including providing a secondary seal (120) during storage outside the application system (during transportation, storage, etc.) that reduces the risk of undesirable hazardous gas release, and to prevent access to the primary seal or flow control valve (100) and thus prevent the tampering with the internal mechanism and thereby avoids safety hazards. The shut-off valve (100) is preferably opened by a pin (40) that depresses a secondary seal stopper (128) when the connection is made. The flow control valve (100) is magnetically actuated by a magnetic flux generated by a coil (60). When an electric signal is sent to the coil (60), the armature is moved into the open position to open the primary seal (100), thereby to allow gas to flow through the valve into the application system.
Abstract:
A switching valve for a high-pressure gas container, which cantains a gas overflow preventing part, comprises a valve body (1), a gas inlet (106), a gas outlet (107), a handle (104) for rotating an axial bar (103) coupled with device (102) for opening or closing the valve manually, a float (2), and a support plate (3) having through-holes (301). Different forms of floats with and without a spring (202) are proposed. Under normal conditions the float (2) is resting on the support plate (3). During sudden temporary drops in the downstream pressure, due to e.g. leakage of the gas line, float (2) is pressed downstream against a seat and closes the valve.
Abstract:
본 발명은 가스용기용 밸브의 어느 일측에 과류가 발생할 때 이를 차단하고 미세한 가스량만 세도록 하는 과류방지밸브를 더 구성하여, 호스의 파손 또는 인위적인 조작에 의한 인위적 가스누출을 방지하는 안전성을 향상시키는 제품경쟁력을 강화하는 과류방지 및 기밀성을 향상시킨 가스용기용 밸브에 관한 것으로, 이는 액화석유가스 또는 액화천연가스가 저장되는 가스용기의 일단에 구성되고 내측에 토출공이 형성된 밸브몸체와 상기 밸브몸체의 토출공에 마련되어 상기 토출공을 개폐하여 가스의 배출 또는 충전 및 가스누출을 방지하는 개폐수단과 상기 밸브몸체의 어느 일측에 마련되는 안전밸브 및 상기 밸브몸체의 상부에 마련되어 사용자의 조작으로 상기 개폐수단을 개폐작용시키도록 하는 핸들수단으로 구성된 가스용기용 밸브에 있어서, 상기 개폐수단(20)에는 호스의 파손 또는 인위적인 힘에 의해 상기 가스용기에서 배출되는 가스의 배출압력이 정격 배출압력보다 높을 경우 이를 차단하고 서서히 가스의 배출이 이루어져 안전성을 도모하는 과류차단밸브(250); 및 상기 밸브몸체(10)의 토출공(12)에는 제1 및 제2차단벽(14)(16) 순차적으로 형성되어 있고; 상기 개폐수단(20)에는 상기 제1차단벽(14)을 밀폐시키기 위한 제1패킹(212)이 구성된 제1체크스핀들(210)과 상기 제2차단벽(16)을 밀폐시키기 위한 제2패킹(122)이 구성된 제2체크스핀들(220);을 포함하는 것을 특징으로 한다.