摘要:
A medical gas cylinder system is provided that includes a gas cylinder, a gas dispensing mechanism for dispensing the medical gas from the gas cylinder, a flow control valve operatively disposed in the dispensing mechanism and adapted to initiate a flow of medical gas from the gas cylinder upon actuation, and a cylinder contents gauge adapted to indicate the status of medical gas within the gas cylinder. The flow control valve includes a setting to ensure the gas contents of cylinder are evacuated prior to return shipment. The disclosed system further includes a shipping container having a configuration adapted to hold the gas cylinder and dispensing mechanism and having one or more transparent surfaces or windows such that the cylinder contents gauge or other cylinder status indication is visible when the gas cylinder and dispensing mechanism are placed in the container. The gas cylinder and container are suitable for shipment via commercial carrier.
摘要:
An apparatus (100) for controlling the discharge of pressurized fluids from the outlet of a high pressure cylinder (110) containing toxic hydridic or flammable compounds is provided. The apparatus (100) contains a cylinder (110) for holding a pressurized fluid in an at least partial gas phase; a cylinder port body (114) threaded to the upper part of the cylinder (110) in a sealed position; a dual port head valve assembly (116) disposed within the cylinder port body (114), wherein a first port (130) is utilized to fill the cylinder with a pressurized fluid, and a second port in fluid communication with an outlet of the cylinder (122) to discharge the pressurized fluid; a gas flow discharge path (12 0) defined in part by the second port body and the outlet, and further including a restricted flow path (130) and a flow channel disposed upstream of the second port body, but wherein the gas flow discharge path does not include a restrictive element selected from the group of pressure regulators, check valves and restrictive flow orifices; and the restricted flow path (13 0) limits the flow rate of the gas discharged from the cylinder to 5,000 seem when the outlet of the cylinder (110) is exposed to an atmospheric condition.
摘要:
A treating gas supply system comprising treating gas supply piping (220) for supplying the treating gas from gas cylinder (210) to a treating unit and inert gas supply source (230) for supplying an inert gas to a gas supply piping, which treating gas supply system is adapted to during system operation wait ready while filling the interior of the gas supply piping with the inert gas, and to upon receiving of signal for treating gas use initiation (S) from the treating unit discharge by vacuuming the inert gas within the gas supply piping, charge the treating gas and initiate the supply of treating gas from a treating gas supply source, and to upon receiving of signal for treating gas use completion (F) from the treating unit terminate the supply of treating gas from the treating gas supply source, discharge by vacuuming the treating gas within the gas supply piping and charge the inert gas. Accordingly, in the nonuse of treating gas in the treating unit, the interior of the piping from the treating gas supply source to the treating unit is in the state of being filled with the inert gas to thereby attain preventing of any deposition within the piping during the nonuse period.
摘要:
An apparatus is provided for intended use in pumping a fluid under sterile conditions. In one embodiment, a first rigid container is internally pressurized to pump fluid through a first flexible vessel within the rigid container. In another embodiment, first and second containers are provided, each for receiving flexible vessels that create independent pumping chambers upon the selective or periodic internal pressurization of the containers. Related aspects and methods are also provided.
摘要:
The present, invention relates to a system and method. for improving the efficiency of fuel cells. The storage system includes an outer shell and one or more bladders may be concentrically positioned inside the outer shell. A primary chamber is defined between the outer shell and the bladder, and a secondary chamber is defined interior to the bladder.
摘要:
A method and apparatus are presented for controlling the flow of gas from a source to a low- pressure device which is particularly useful for sampling high pressure gases. Examples are presented for the high-pressure dosing of an RGA. In one embodiment, the method isolates volumes of gases at high pressure, limits their pressure, and provides the gas at low pressure. In one embodiment the apparatus includes valves, flow restriction devices, and check valves, and can be used, for example, to either provide accurate and repeatable quantities discrete doses of gas from high pressure to low pressure or provide continuous dosing from high to low pressure. The apparatus and method are relatively insensitive to source pressure, and thus provide reproducible results over a range of source pressures.
摘要:
An apparatus for storage of compressed hydrogen gas is provided. The apparatus includes a sealed housing having an outlet pipe coupled to the housing and equipped with a controllable discharge valve. The sealed housing defines a chamber that includes a cartridge comprising a plurality of cylindrical voids containing said compressed hydrogen gas. The apparatus also includes a hydrogen liberating tool configured for controllable liberating the hydrogen gas from the cartridge into a volume of the chamber that is not occupied by the cartridge. The apparatus is controlled by a control system operatively coupled to the controllable discharge valve and the hydrogen liberating tool, and configured for controlling operation thereof. According to another aspect of the invention, there are provided a system and method for filling the cartridge. The filling includes vacuumizing a chamber into which the cartridge is placed; preparing the cartridge in order to let the hydrogen gas diffuse into the cylindrical voids; and controlled hydrogen gas compressing in the chamber over a predetermined compression time interval until the pressure in the chamber reaches a predetermined pressure value.
摘要:
Fluid storage and dispensing systems, and processes for supplying fluids for use thereof. Various arrangements of fluid storage and dispensing systems are described, involving permutations of the physical sorbent-containing fluid storage and dispensing vessels and internal regulator-equipped fluid storage and dispensing vessels. The systems and processes are applicable to a wide variety of end-use applications, including storage and dispensing of hazardous fluids with enhanced safety. In a specific end-use application, reagent gas is dispensed to a semiconductor manufacturing facility from a large-scale, fixedly positioned fluid storage and dispensing vessel containing physical sorbent holding gas at subatmospheric pressure, with such vessel being refillable from a safe gas source of refill gas, as disclosed herein.
摘要:
A relatively low pressure inert gas hazard suppression system (20) is provided which is designed to protect a room (22) or the like from the effects of fire or other hazard. The system (20) includes a plurality of pressurized inert gas cylinders (24) each equipped with a valve unit (26); each valve unit (26) is in turn coupled via a conduit (28) to a delivery manifold (30). The respective valve units (26) are operable to deliver gas from the cylinders (24) at a generally constant pressure (usually around 10 - 100 bar) throughout a substantial portion of the time of gas delivery, to thereby provide effective hazard suppression without the need for expensive high-pressure gas handling and distribution hardware and a reduction in room venting area due to lower room over-pressurization.