90results about How to "High pressure level" patented technology

Methods and devices to remove thromboembolic material from the human body using rotational energy and aspiration are disclosed. A thromboembolic removal system includes an extraction device and drive unit. The extraction device is introduced to the treatment area and activated by the drive unit to separate, break apart, loosen or soften thromboembolic material and to facilitate its aspiration outside the patient.

A method for increasing the resolution when forming a three-dimensional article through successive fusion of parts of a powder bed, said method comprising providing a vacuum chamber, providing an electron gun, providing a first powder layer on a work table inside said vacuum chamber, directing an electron beam from said electron gun over said work table causing the powder layer to fuse in selected locations to form a first cross section of said three-dimensional article, providing a second powder layer on said work table, directing the electron beam over said work table causing said second powder layer to fuse in selected locations to form a second cross section of said three-dimensional article, reducing the pressure in the vacuum chamber from a first pressure level to a second pressure level between the providing of said first powder layer and said second powder layer.

The invention discloses a radial-flow type fluidic pressure wave supercharger, which can realize the energy exchange between the high pressure gas and the low pressure gas by running the pressure wave, avoid loss of mixed and diffused energy and has the advantages of high isentropic efficiency, low rotating speed, operability with liquid, sufficient exhaust and on the like. For adopting a pressure oscillating tube channel with variable rectangular cross-section, the incidence loss and the flowing loss of the jet flow are reduced; the channel is a bending flow channel arranged along the radial radiation, the process of expanding and compressing is strengthened and the sufficient discharge of the compressed gas is accelerated by using the centrifugal force; pressure balancing holes are arranged in the machine, so that the performance is kept balanced at the different pressure ratios; a pressure expanding flow guider is arranged at a compressed gas outlet in order to transform the dynamic energy of the gas flow effectively. The radial-flow type fluidic pressure wave supercharger can fully utilize the pressure energy in the production process and the pressure energy in the stratums of natural gas, thereby providing an efficient device selection for utilizing the pressure energy sources effectively.

Methods and devices to remove thromboembolic material from the human body using rotational energy and aspiration are disclosed. A thromboembolic removal system includes an extraction device and drive unit. The extraction device is introduced to the treatment area and activated by the drive unit to separate, break apart, loosen or soften thromboembolic material and to facilitate its aspiration outside the patient.

An axial-flow type jet flow gas wave pressure supercharger relies on operation of pressure wave to achieve energy exchange between high-pressure gas and low-pressure gas, avoids mixed diffusion energy loss and has the advantages of being high in isentropic efficiency, low in rotation speed, capable of working with fluid and the like. A pressure oscillation tube channel with variable rectangular cross section is adopted to reduce incident loss and flow loss of jet flows. A pressure equalizing port is arranged in the pressure supercharger so that performance of different pressure ratios is balanced. A pressure expansion fluid director is arranged at the position of a compression fluid outlet to effectively convert air flow kinetic energy. The axial-flow type jet flow gas wave pressure supercharger can fully utilize pressure energy in the production process and stratal pressure energy such as natural gas and can serve as an efficient device for effectively utilizing the pressure energy.

A flame resistant hose having a nitrile-containing rubber inner tube layer; two reinforcing plies one or more insulating plies of rubberized fiberglass unidirectional cord fabric helically wrapped at a helix angle in the range of 40-60 degrees with respect to the hose longitudinal axis and with the edges of each reinforcing ply overlapping up to about 0.5 inches; an optional rubber cushion or tie layer between the reinforcing plies and the insulating plies; and a polychloroprene rubber outer cover layer. The hose may have one or more helical wires embedded in the hose such as between the two reinforcing layers. The hose successfully passes fire resistance testing when tested according to BS ISO 15540:1999 incorporating amendment number 1.

A reshaping device according to the invention has at least one ejector, for example, in the form of a cylinder pin (11) which is shifted by the workpiece (6) against the pressure from a pressure storing cylinder (17) or other suitable energy storing device before and/or during the reshaping of the workpiece (6). The workpiece ejection occurs by the work stored in the energy storing device.

A blow box (18) for supporting the web run in a paper machine or the like, which blow box comprises members for maintaining a negative pressure at least in one negative pressure region (24) between the wire (20) and the blow box. The members comprise a blocking member (30, 32), which is arranged, regarding the wire's running direction, at the beginning and/or at the end of said negative pressure region, which extends across the wire and projects towards the wire, and which is movable in relation to the blow box, and blowing members (34, 36), with which air is ejected with blows between said blocking member and the wire from said negative pressure region and/or with which air is prevented from entering this negative pressure region. The blocking member is connected to the blow box by a hinge member (40, 42), which allows the blocking member to rotate around the articulation point of the hinge member due to the pressure difference between the pressure acting on the blocking member's blocking surface (30′, 32′) directed towards the wire and the pressure acting on the blocking member's back surface (50, 50′) directed away from the wire.

A heat transfer plate comprising a first port opening and a second port opening for allowing a first fluid to flow over a top surface of the heat transfer plate, a first side opening and an opposite, second side opening for allowing a second fluid to flow over a bottom surface of the heat transfer plate, a number of rows of alternating tops and grooves that extend along the heat transfer plate, where a transition between a top and an adjacent groove is formed by an inclined portion, and plate portions that extend along the heat transfer plate, between the rows of tops and grooves, thereby forming flow channels between the rows of tops and grooves.

A debridement device having a controllable Lorentz-force actuator is disclosed. The debridement device includes a nozzle delivering a jet of debridement substance to a tissue and the jet is driven by the Lorentz-force actuator. The device may have a suction port for removing the debridement substance. A second Lorentz-force actuator can be used for each of the jet and suction. The first and second Lorentz-force actuators for the jet and suction can also be configured to provide for continuous jet injection and continuous suction. The device may include a second nozzle delivering a second jet of debridement substance to the region of tissue and the first and second jets may intersect and dissipate into a mist upon intersection to dissipate the kinetic energy of the jets. The Lorentz-force actuator may drive a reciprocating piston pump providing continuous pressure to the nozzles.

An air conditioning device includes a main refrigerant circuit and a discharge-intake bypass circuit. The refrigerant circuit is operable in a heating mode and a positive cycle defrosting mode. it is possible for refrigerant to bypass from a discharge side to an intake side of the compressor when the refrigerant circuit is operating in the heating mode. The refrigerant circuit is operable in a positive cycle defrosting mode. When the refrigerant circuit is operating in the positive cycle defrosting mode, a superheat valve of the discharge-intake bypass circuit is opened and the refrigerant is caused to bypass from the discharge side to the intake side of the compressor through the bypass circuit and a defrosting-mode main valve high-pressure control is performed to adjust a valve opening of a main valve so that a high pressure level of a refrigerating cycle in the refrigerant circuit reaches a target high pressure.

The invention discloses an air kinetic energy ejection launcher for a spacecraft. The air kinetic energy ejection launcher for the spacecraft comprises an air inflation mechanism and a high pressure air spherical tank. The air inflation mechanism is communicated with the high pressure air spherical tank and used for providing vaporized gas for the high pressure air spherical tank, a blind plate cover with the gear shaped inner edge is installed on the opening in the top of the high pressure air spherical tank, a blind plate with the gear shaped outer edge is installed in the blind plate cover, the blind plate cover is connected with an electromagnetic drive device, after the electromagnetic drive device detects that the gas in the high pressure air spherical tank reaches the preset value, an operator operates the electromagnetic drive device to drive the blind plate cover to rotate by one gear, an ejection guide rail is also arranged on the upper end of the blind plate cover, the track cross-section shape of the ejection guide rail is matched with the shape of the blind plate, so that the blind plate can conduct ejection movements in the ejection guide rail under the push of the air pressure, the extending part of the upper end of the ejection guide rail is provided with a guide cylinder, and the spacecraft is installed above the blind plate. The device can reduce more than 90% of the void volume and launch weight, the launch speed of the spacecraft can be higher than 30,000-300,000 m/s, and the cost is low.

A multifunctional gasket with compression and rotation control comprises annular sealing element(s) with specific stiffness, geometry, tightness and compressibility properties and uniquely shaped compression element(s) with variable thickness and specific mechanical properties. The gasket is designed to seal under static and dynamic fluid pressure loading for a wide range of sizes and with severe thermal differential temperatures and static and dynamic external loads. This gasket is able to significantly increase the pressure rating for leakage, ability to resist external forces and moments, resistance to thermal differentials and operating reliability of flanges in accordance with published standards, as well as enable the more efficient design of special flanges for demanding operating conditions. The gasket design also allows for easier, faster and more uniform assembly of the joint.

The invention relates to a floating ball valve dedicated to high-pressure steam and belongs to the technical field of valves. The floating ball valve dedicated to high-pressure steam comprises a valve body, a ball and a valve rod. A first metal valve seat is arranged on one side of a medium inlet end of the valve body, and a second metal valve seat is arranged on one side of the outlet end. The first metal valve seat and the second metal valve seat are attached to the ball to form a metal seal pair. A valve seat compression ring is arranged outside the first metal valve seat, and a disc spring is arranged between the valve seat compression ring and the first metal valve seat. Seal pre-tightening pressure can be set by adjusting compression force of the disc spring. The floating ball valve dedicated to high-pressure steam is good in seal property, low in leakage rate, outstanding in abrasion resistance, convenient to assemble and disassemble, and applicable to working conditions with high working pressure and bad working conditions; besides, for the current situation the current situation that the leakage rate of steam valves in China is high and medium-and-low-pressure steam valves are dominated in China, the floating ball valve can well make up the gap.

The invention relates to an airplane hydraulic system layout based on hydraulic and power-by-wire boosting and energy storing devices. The airplane hydraulic system layout based on the hydraulic and power-by-wire boosting and energy storing devices comprises a spoiler and aileron energy storing device, a cabin door energy storing device and an empennage energy storing device, wherein the spoiler and aileron energy storing device is used for driving a spoiler steering engine and an aileron steering engine; the cabin door energy storing device is used for driving a cabin door actuator; the empennage energy storing device is used for respectively driving a rudder steering engine and an elevator steering engine; the spoiler and aileron energy storing device and the cabin door energy storing device are connected with an engine driving pump, and are used for receiving oil pressure input from the engine driving pump; and the empennage energy storing device is connected with a power-by-wire control system of an airplane, and is used for storing energy or actuating on the basis of an output instruction of the power-by-wire control system. By the airplane hydraulic system layout based on the hydraulic and power-by-wire boosting and energy storing devices, installed power of the airplane can be reduced.