초록

A valve device for a pressurised gas cylinder comprising a connector to be connected to a gas outlet orifice of a gas cylinder. A handwheel controls closing a gate valve or opening the gate valve to release gas from the cylinder. The output flow of gas released from the cylinder can be set.

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1. Valve device for a pressurised gas cylinder comprising a connector adapted to be connected to a gas outlet orifice of a gas cylinder, a pressurised gas outlet, a handwheel for controlling closing of a gate valve or opening of the gate valve to release gas from the cylinder, and a manual controlle

1. Valve device for a pressurised gas cylinder comprising a connector adapted to be connected to a gas outlet orifice of a gas cylinder, a pressurised gas outlet, a handwheel for controlling closing of a gate valve or opening of the gate valve to release gas from the cylinder, and a manual controller for setting an output flow of gas released from the cylinder. 2. Device according to claim 1, wherein the handwheel is rotatable in both directions, the handwheel being arranged for controlling during its rotational movement in the opening direction, in a first part of its rotation opening of the gate valve to release gas from the cylinder, and in a second part of its rotation, setting of the flow of gas released toward the valve outlet. 3. Device according to claim 1, wherein the handwheel is integral with a gate valve stem mounted in a body of the valve device by a seal arrangement, actuation of the handwheel being arranged for controlling a mobile structure for opening and closing a cylinder gate valve to release gas from the cylinder through the gate valve stem. 4. Device according to claim 1, wherein the handwheel is integral with the gate valve stem mounted in a body of the valve device by a seal arrangement, the gate valve stem being arranged for controlling the output flow of gas released from the cylinder. 5. Device according to claim 3, wherein at least two orifices of different sizes extend through the part forming a first end of the gate valve stem, a third orifice extending in the valve body, the third orifice being connected to the gas outlet, the second part of the rotation of the control handwheel causing one of the two orifices and the third orifice to be opposite each other to determine the flow at which gas passes toward the outlet. 6. Device according to claim 1, wherein while the gate valve is in the open or closed position, the device comprises a holder, which, when the handwheel is actuated, is arranged for holding the handwheel in a constant projection relative to the body of the valve device. 7. Device according to claim 6, wherein the holder for holding the projection of the handwheel relative to the valve body comprises a stop for stopping the handwheel from moving inwards toward or outwards from the body of the valve device. 8. Device according to claim 3, wherein the first end of the gate valve stem is fixed to the handwheel, and the second end of the gate valve stem is integral in rotation with the first end integral with the handwheel and free in translation relative to the first end, the second end of the gate valve stem being screwed in the valve body, rotation of the handwheel being arranged for controlling helical movement of the second end of the gate valve stem in the body of the valve, the mobile structure having freedom of translation between an extreme position of closing off the gas supply, and for opening the gas supply, an extreme position of stopping or an intermediate position being determined by the position of the second end of the gate valve stem. 9. Device according to claim 8, wherein the first and the second ends of the gate valve stem each comprise a castellation that works with that of the other end so that they are integral with each other in rotation. 10. Device according to claim 8, wherein the first and the second ends are connected by a spring for tightening a seal trapped between the first end and the body of the valve. 11. Device according to claim 8, wherein the mobile structure for opening and closing the gate valve includes a flap arranged for linear translatory movement inside the body of the valve. 12. Device according to claim 8, wherein the extreme position of stopping is defined by a part held fixed in place with respect to the body of the valve by a holder arrangement. 13. Device according to claim 11, wherein the flap is mounted on a spring, the flap being arranged for compressing the spring in response to the second end bearing on the end of the flap. 14. Devi ce according to claim 1, wherein the device is arranged for regulating the gas located downstream from the gate valve. 15. Device according to claim 14, wherein the device comprises a residual pressure system between the regulation device and a cylinder gas outlet valve, a flap arranged so that below the residual pressure of the residual pressure system, the flap prevents gas from passing toward the regulation device. 16. Device according to claim 1, further comprising a manometer connected through a duct located upstream from the gas outlet gate valve to measure the pressure in the gas cylinder. 17. Valve device for a pressurized gas cylinder comprising:a connector adapted to be connected to a gas outlet orifice of a gas cylinder;a pressurised gas outlet;a controller for an output flow of gas released from the cylinder;a shaft for controlling closing of a gate valve or opening of the gate valve to release gas from the cylinder, the shaft being integral with a gate valve stem mounted in a body of the valve device by a seal arrangement, actuation of the shaft being arranged for controlling a mobile structure for opening and closing a cylinder gate valve through the gate valve stem, at least two orifices of different sizes extending through the part forming a first end of the gate valve stem, a third orifice extending in the valve body, the third orifice being connected to the gas outlet, the second part of the rotation of the shaft causing one of the two orifices and the third orifice to be opposite each other to determine the flow at which gas passes toward the outlet. 18. Valve device for a pressurised gas cylinder comprising:a connector adapted to be connected to a gas outlet orifice of a gas cylinder;a pressurised gas outlet;a shaft for controlling closing of a gate valve or opening of the gate valve to release gas from the cylinder; anda controller for setting an output flow of gas released from the cylinder, the shaft being integral with a gate valve stem mounted in a body of the valve device by a seal arrangement, actuation of the shaft being arranged for controlling a mobile structure for opening and closing a cylinder gate valve to release gas from the cylinder through the gate valve stem,the first end of the gate valve stem being fixed to the shaft, and the second end of the gate valve stem being integral in rotation with the first end integral with the shaft and free in translation relative to the first end, the second end of the gate valve stem being screwed in the valve body, rotation of the shaft being arranged for controlling helical movement of the second end of the gate valve stem in the body of the valve, the mobile structure having freedom of translation between an extreme position of closing off the gas supply, and for opening the gas supply, an extreme position of stopping or an intermediate position being determined by the position of the second end of the gate valve stem. 19. Device according to claim 18, wherein the first and the second ends of the gate valve stem each comprise a castellation that works with that of the other end so that they are integral with each other in rotation. 20. Device according to claim 18, wherein the first and the second ends are connected by a spring for tightening a seal trapped between the first end and the body of the valve.