摘要:
A valve for pressurized fluid, with or without incorporated pressure-reducing valve, comprising a body accommodating a fluid circuit having an upstream end designed to be placed in communication with a reserve of pressurized fluid and a downstream end designed to be placed in communication with a using device, the circuit comprising an isolation valve element in order to selectively close off the circuit, the valve element being controlled by a lever mounted so as to pivot on the body between a rest position in which the isolation valve element is held in a position of closing the circuit and an active position in which the lever moves the isolation valve element into a position of opening the circuit , wherein the lever comprises at least one opening, wherein the valve comprises a functional abutment mounted on the body and wherein only in the rest position the opening accommodates within it a portion of the functional abutment mounted on the body.
摘要:
A system for loading and storing CNG onboard of a ship and for unloading it therefrom comprises CNG loading facilities for loading CNG on board of the ship, CNG storage facilities for storing the loaded CNG on board of the ship at nominal storage pressure and temperature, and CNG unloading facilities for unloading CNG to a delivery point. The delivery point requires the unloaded CNG to be at delivery pressure and temperature generally different from the storage pressure and temperature. Thus, the CNG unloading facilities comprise a CNG heater for heating the to-be-unloaded CNG prior to unloading, and a lamination valve for allowing the to-be-unloaded CNG to expand from its storage pressure to the delivery pressure. A compressor may also be provided to compress CNG that would not otherwise be spontaneously delivered.
摘要:
The invention relates to a gas distribution valve unit comprising a valve body (1) comprising a gas outlet orifice (6) via which the gas can leave the valve body (1), a first internal gas passage (3) fluidically connecting a gas inlet orifice (2) to the gas outlet orifice (13), a gas passage control system arranged on the first internal gas passage (3), and a control element (5) that a user can operate and that collaborates with the gas passage control system to control the passage of gas in the first internal gas passage (3), and a device (7) that indicates pressure or the gas autonomy. According to the invention, the valve body (1) comprises a second internal gas passage (11) fluidically connected to the first internal gas passage (3), and the pressure or autonomy indicating device (7) is fixed at the upper end (1a) of the valve unit, and comprises a pressure tapping (8) in fluidic communication with the second internal gas passage (11) so as to measure the pressure of the gas inside said second internal gas passage (11). Gas container equipped with such a valve unit.
摘要:
A frangible closure coupling is used with or on pipe of a tank that contains a potentially dangerous fluid, such as liquid natural gas. The closure coupling mitigates the uncontrolled release of fluid from the tank in the event of a rupture of a pipe attached to the tank.
摘要:
A method for withdrawing a pressurized gas from a receptacle comprising a tap, the tap comprising a filler/withdrawal coupling for a pressurized gas receptacle designed to interact with a packaging connector in order to allow said receptacle to be filled with pressurized gas or for withdrawal of pressurized gas from the receptacle, the method comprising a) a first step of moving a dust-prevention valve downstream in order to open the upstream end of the circuit via a mechanical actuation and/or a fluidic actuation carried out by the packaging connector and b) a second step of moving an isolation valve to a downstream opening position via a mechanical actuation carried out by the dust-prevention valve and/or via a fluidic actuation carried out by the gas delivered by the packaging connector.
摘要:
A system for loading and storing CNG onboard of a ship and for unloading it therefrom comprises CNG loading facilities for loading CNG on board of the ship, CNG storage facilities for storing the loaded CNG on board of the ship at nominal storage pressure and temperature, and CNG unloading facilities for unloading CNG to a delivery point. The delivery point requires the unloaded CNG to be at delivery pressure and temperature generally different from the storage pressure and temperature. Thus, the CNG unloading facilities comprise a CNG heater for heating the to-be-unloaded CNG prior to unloading, and a lamination valve for allowing the to-be-unloaded CNG to expand from its storage pressure to the delivery pressure. A compressor may also be provided to compress CNG that would not otherwise be spontaneously delivered.
摘要:
A method for withdrawing a pressurized gas from a receptacle comprising a tap, the tap comprising a filler/withdrawal coupling for a pressurized gas receptacle designed to interact with a packaging connector in order to allow said receptacle to be filled with pressurized gas or for withdrawal of pressurized gas from the receptacle, the method comprising a) a first step of moving a dust-prevention valve downstream in order to open the upstream end of the circuit via a mechanical actuation and/or a fluidic actuation carried out by the packaging connector and b) a second step of moving an isolation valve to a downstream opening position via a mechanical actuation carried out by the dust-prevention valve and/or via a fluidic actuation carried out by the gas delivered by the packaging connector.
摘要:
A valve for pressurized fluid comprising a body (1) accommodating a fluid circuit (2) having an upstream end (3) designed to be placed in communication with a reserve of pressurized fluid and a downstream end (4) designed to be placed in communication with a using device, the circuit (2) comprising an isolation valve element (5) in order to selectively close off the circuit (2), the valve element (5) being controlled by a lever (8) mounted so as to pivot on the body (1) between a rest position in which the isolation valve element (5) is held in a position of closing the circuit (2) and an active position in which the lever (8) moves the isolation valve element (5) into a position of opening the circuit (2).
摘要:
A method and system for preventing gas pressure in a pressure vessel from dropping below a minimum allowable pressure. Pressure readings from a pressure sensor downstream of a pressure regulator are monitored by a processor as they vary within a steady fluctuation band under normal regulated pressure conditions. When the pressure regulator reaches a fully open position in low vessel pressure conditions, the processor detects a drop in the pressure reading to a value below the recent fluctuation band, and recognizes that the pressure is dropping below the regulation pressure value. The processor can use this information to shut off flow of gas from the vessel, thus preventing the vessel from dropping below its minimum allowable pressure, regardless of the actual magnitude of the pressure reading from the sensor—which can vary through a wide range due to tolerances.
摘要:
The invention relates to a gas filling and distribution head which is intended to be disposed in a hole in a pressurised gas storage tank. The inventive head includes a mounting segment which is intended to be housed in the hole in the tank and an expansion segment which houses a pre-expansion device, said pre-expansion device being arranged in relation to the mounting segment such as to be housed at least partially inside the tank when the head is in the mounted position. The invention is characterised in that it includes a connection interface that is intended to co-operate removably with a control device for filling the tank with gas and/or extracting gas from same.