摘要:
A modified vacuum actuated valve assembly and sealing mechanism is provided for improved sub-atmospheric flow stability characterized by the absence of delivery pressure spikes and flow excursions. The valve assembly includes a non-stationary thermoplastic seat and a stabber. The stabber is characterized by a top portion having a circular periphery designed to mechanically engage and disengage with an inner sealing surface of the thermoplastic seat. The sealing surface is coined to eliminate surface irregularities contained therein, thereby producing a relatively smooth coined mating inner sealing surface for the circular top portion of the stabber. The valve assembly also includes a modified bellows capable of fine tuning the delivery pressure of the valve assembly.
摘要:
A modified vacuum actuated valve assembly and sealing mechanism is provided for improved sub-atmospheric flow stability characterized by the absence of delivery pressure spikes and flow excursions. The valve assembly includes a non-stationary thermoplastic seat and a stabber. The stabber is characterized by a top portion having a circular periphery designed to mechanically engage and disengage with an inner sealing surface of the thermoplastic seat. The sealing surface is coined to eliminate surface irregularities contained therein, thereby producing a relatively smooth coined mating inner sealing surface for the circular top portion of the stabber. The valve assembly also includes a modified bellows capable of fine tuning the delivery pressure of the valve assembly.
摘要:
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.
摘要:
A supply source for delivery of a CO-containing dopant gas composition is provided. The composition includes a controlled amount of a diluent gas mixture such as xenon and hydrogen, which are each provided at controlled volumetric ratios to ensure optimal carbon ion implantation performance. The composition can be packaged as a dopant gas kit consisting of a CO-containing supply source and a diluent mixture supply source. Alternatively, the composition can be pre-mixed and introduced from a single source that can be actuated in response to a sub-atmospheric condition achieved along the discharge flow path to allow a controlled flow of the dopant mixture from the interior volume of the device into an ion source apparatus.
摘要:
A container for transporting and storing hazardous materials such as Chlorine includes a cylindrical body having end caps. The end caps are welded to the body to form a pressure vessel. The end caps have a peripheral edge that is recessed with respect to the ends of the body to protect the weld against damage from impact. The configuration of the juxtaposed components forms a lap joint that can be affixed together by a fillet weld.
摘要:
Disclosed herein is a method of fabricating a high-pressure gas cylinder, the method comprising providing a cylinder body having at least one opened end portion, providing a gas for preventing oxide film-formation on an inner surface of the cylinder body, heating the opened end portion of the cylinder body, and reducing an opened area of the opened end portion by compressing the opened end portion. In the process for deforming or deforming end portions of the cylinder body, the oxide film is prevented from being formed on the inner surface of the cylinder body and the cylinder body is plastic-deformed, thereby preventing the plated layer having been formed from being damaged.
摘要:
The present invention relates to a pressure vessel for storage of solid, liquid and/or gaseous media under an operating pressure above atmospheric pressure, wherein the pressure vessel encloses a hollow space provided for storage of the medium, and is provided with at least one connector for loading and/or unloading. Because the pressure vessel is composed at least in part of a tube that in turn is manufactured from a fiber-reinforced thermoplastic, wherein the thermoplastic material contains more than 10% by volume of fibers with an average fiber length over 50 mm, the pressure vessel has a low weight and a very good resistance to corrosion and resistance to chemically aggressive media, yet it nevertheless withstands the mechanical stresses of the normal high operating pressures up to 25 Mpa.
摘要:
An effects generation system structured to produce a controlled special effects cloud and comprising a cryogenic fluid source including a container wherein a quantity of a cryogenic fluid is stored. The container includes a fluid outlet and a fluid inlet, the fluid inlet being disposed in fluid flow communication with a pressurization assembly that is structured to maintain an outflow of the cryogenic fluid, under pressure, through the fluid outlet and into a delivery assembly operatively connected with the fluid outlet and structured to deliver the cryogenic fluid into a predetermined area through a plurality of delivery ports and into reactive proximity with a quantity of a reactive fluid so as to bring about a phase change in the reactive fluid sufficient to result in the formation of the special effects cloud.
摘要:
An effects generation system structured to produce a controlled special effects cloud and comprising a cryogenic fluid source including a container wherein a quantity of a cryogenic fluid is stored. The container includes a fluid outlet and a fluid inlet, the fluid inlet being disposed in fluid flow communication with a pressurization assembly that is structured to maintain an outflow of the cryogenic fluid, under pressure, through the fluid outlet and into a delivery assembly operatively connected with the fluid outlet and structured to deliver the cryogenic fluid into a predetermined area through a plurality of delivery ports and into reactive proximity with a quantity of a reactive fluid so as to bring about a phase change in the reactive fluid sufficient to result in the formation of the special effects cloud.
摘要:
A liquefiable gas pressure cylinder and method for making the same with the cylinder including a cylindrical shell, and heads fusion welded at opposites ends of the shell. The side ends where the heads are joined to the shell are crimped radially inward to each end to form chimes. The welds are 100% radiographed and heat treated. The heads are dished to have a domed center portion which has a profile and thickness so that the domed center portions will reverse before any other part of the cylinder is stressed beyond a yield limit for such part.