5422 results about "High pressure gas" patented technology

A device for dispensing a viscous material and a method for controlling the dispensing pressure. The device has a manually actuated control valve, that, when depressed, releases high pressure gas from the source, such as a CO₂ cartridge, into a gas enclosure. An indicator signals a pre-determined pressure in the gas enclosure sufficient to forcefully dispense a viscous material from a product cartridge.

A gas-lift petroleum well and method for producing petroleum products using downhole pressurized gas to provide lift. The gas-lift well having a well casing, a production tubing, a packer, and a gas-lift valve. The well casing extends within a wellbore of the well, and the wellbore extends through oil and gas zones. The production tubing extends within the casing. The tubing having an opening formed therein, which is in fluid communication with an oil zone. The packer is located downhole in the casing and coupled to the tubing. The packer can have an electrically controllable packer valve, which is adapted to control a flow of downhole pressurized gas from one side of the packer to another. The downhole pressurized gas is provided by a gas zone that the wellbore passes through. The downhole gas-lift valve is coupled to the tubing and is adapted to control a flow of downhole pressurized gas into oil in the tubing for lifting the oil. The gas-lift valve can be an electrically controllable valve. The tubing and casing are used as electrical conductors for supplying power and/or communications downhole. The current in the tubing is routed using a ferromagnetic induction choke to create a voltage potential, which provides electrical power to downhole electrical devices. Also, there may be a bypass passageway to route downhole gas to gas-lift valves. There may also be downhole sensors to measure physical quantities (e.g., pressure). Such measurements can be used for feedback control of downhole electrically controllable valves.

A pneumatic nebulizer that produces a high volume of aerosols for inhalent delivery of medications and other constituencies. High pressure gas formed into a gas jet is passed through a thin choked region of fluid that is entrailed and impinged upon an aerosol amplifier which creates a spray whose aerosol components are directed up through vents to an aerosol outlet for delivery. Larger-sized liquid particles are caused to pool up in a region surrounding the aerosol amplifer and then drip down back into the liquid medication reservoir.

The invention relates to systems and methods for rapidly and isothermally expanding and compressing gas in energy storage and recovery systems that use open-air hydraulic-pneumatic cylinder assemblies, such as an accumulator and an intensifier in communication with a high-pressure gas storage reservoir on a gas-side of the circuits and a combination fluid motor/pump, coupled to a combination electric generator/motor on the fluid side of the circuits. The systems use heat transfer subsystems in communication with at least one of the cylinder assemblies or reservoir to thermally condition the gas being expanded or compressed.

A reciprocating gas compressor is described operating according to an extended cycle of 4,6 or more strokes, wherein the first two strokes are sequential induction and compression strokes using a low pressure gas as working fluid and compressing it to a high pressure gas, and the remaining strokes are pairs of sequential filling and emptying strokes using more of the low pressure gas as heat transfer fluid for transferring heat from inside the gas compressor to outside the gas compressor. The gas compressor also contains an in-cylinder heat regenerator for absorbing heat from the compressed gas and releasing heat to the heat transfer fluid thus achieving near-isothermal compression. Using parallel principles, a reciprocating gas expander is also described for achieving near-isothermal expansion. Also described are reciprocating machines using the near-isothermal gas compressor and near-isothermal gas expander in combination according to the Ericsson heat engine cycle, the Stirling heat engine cycle and the Stirling refrigeration cycle.

Recovery of electric power from low-grade waste heat/solar energy, comprising a closed-cycle charged refrigerant loop. Pressurized refrigerant fluid is pumped at ambient temperature through a heat exchanger connected to a waste heat/solar source to extract heat energy during conversion to a high pressure gas. Heated/pressurized refrigerant gas is inlet into an expander to power an output shaft during the expansion of the fluid to a cooled gas at approximately 0 psig. Cooled gaseous refrigerant is condensed to a liquid at low pressure and ambient temperature, and recycled under pressure to the heat exchanger. The expander is a reverse-plumbed gas compressor; the pressurized, hot refrigerant gas is inlet at what is ordinarily its outlet, and the normal inlet becomes the expander end. The refrigerant gas mass flow pressure/temperature drop spins the expander shaft for direct mechanical power take-off, or coupling to a synchronous or inductive generator to produce electricity.

A mixer assembly for a gas turbine engine, including: a primary fuel injector having a central axis for injecting a primary fuel spray into a primary air stream, wherein fuel is provided at a desired rate and droplets of the fuel spray are within a desired size range; a secondary fuel injector positioned radially outwardly of the primary fuel injector for injecting a secondary fuel spray into a secondary air stream spaced radially outwardly of and surrounding the primary air stream; and, a primary air jet positioned between the primary fuel injector and the secondary fuel injector to direct a portion of an incoming air stream between the primary air stream and the secondary air stream.

A CPAP or other ventilation system includes a mask, a flow generator, a positive or high pressure line to provide positive or high pressure air from the flow generator to the mask and a vacuum or return line provided to actively extract exhaled gas from the breathing chamber and/or the air delivery conduit of the mask. The vacuum or return line includes a vent outlet preferably positioned remote from the mask.

The invention belongs to the technical field of compressed natural gas filling, and particularly relates to an integrated hydraulic station which realizes high integration of an oil tank, plunger pumps, motors, a valve block, a cooler, an instrument and a sensor. The reversing function of hydraulic oil is provided through cooperation of an electro-hydraulic reversing valve and a proximity switch on a hydraulic cylinder, the functions of circulating heating of the low-temperature hydraulic oil, discharging of the high-pressure hydraulic oil and avoiding the hydraulic oil channeling back betweenthe double pumps are realized through cooperation of an unloading valve, a one-way valve and the electro-hydraulic reversing valve in the valve block, the high-pressure difference automatic stop function and the high-pressure gas discharging function are provided, combustible gas leakage and expansion deformation of the oil tank which cannot be recovered caused by high-pressure gas channeling back are avoided, the functions of low oil level monitoring alarm, temperature monitoring alarm and low oil temperature automatic circulating heating before starting of the hydraulic oil tank are provided, a three-way ball valve is adopted to replace an oil return valve block in the aspect of cooling oil return of the hydraulic oil, thus the oil return control function is realize, and the cost and space of the hydraulic station are also reduced.

A stretcher 1 comprises a bed 21 on which a sick or injured person will be laid, legs 22 foldably provided on the bed 21, casters 23 provided at the legs 22, respectively, a tank 10 for storing high-pressure gas, pneumatic cylinders 8 and 9, and intake switches 11 and 13. When the intake switches 11 and 13 are turned ON, high-pressure gas is introduced from the tank 10 into the pneumatic cylinders 8 and 9 so that piston rods 28 are retracted. Thus, the legs 22 are given forces toward deployment so that the bed 21 is given an ascending force.

A lightweight, optimally efficient, easily serviced, piston-in-sleeve high pressure accumulator is provided. The accumulator includes one or more cylindrical composite pressure vessel separate end cap manifolds. A piston slidably disposed in a thin impermeable internal sleeve in the accumulator separates two chambers, one adapted for containing a working fluid and the other adapted for containing gas under pressure. Gas is provided in a volume between the impermeable internal sleeve and the composite pressure vessel wall. Additional gas is optionally provided in gas cylinders. Further components are provided for withstanding harmful effects of radial flexing of the composite vessel wall under high pressures, and from stresses present in use in mobile applications such as with a hydraulic power system for a hydraulic hybrid motor vehicle.

A method and apparatus for maintaining the single phase integrity of a deep well formation sample that is removed to the surface comprises a vacuum jacket insulated single working cylinder divided by two free pistons into three variable volume chambers. The intermediate chamber is pre-charged with a fixed quantity of high pressure gas. Wellbore fluid freely admitted to one end chamber bears against one free piston to further compress the gas. The formation sample is pumped into the other end chamber to first, displace the wellbore fluid from the first end chamber and, sequentially, to further compress the gas to preserve the sample phase state upon removal to the surface.

A storage vessel, such as vessels used in storing high pressure gas is provided. The storage vessel includes a liner having a center portion and a first and second end dome. A first composite layer is disposed circumferentially about the center portion. A second composite layer is disposed about said first composite layer and the first and second end dome. In some embodiments, the second composite layer is formed from a knitted or braided sleeve that is tightened over the liner and first composite layer by pulling the sleeve.

A drillable bridge plug includes a mandrel having external splines disposed on an outer surface of the mandrel, a sealing element disposed around the mandrel, an upper cone disposed around the mandrel proximate an upper end of the sealing element, and a lower cone disposed around the mandrel proximate the lower end of the sealing element, wherein an inner surface of the lower cone comprises internal splines configured to engage the external splines. The drillable bridge plug also includes an upper and a lower slip assembly disposed around the mandrel, and an upper and lower ring assembly each including a first segmented barrier ring, a second segmented barrier ring, and a back-up ring disposed proximate sealing element. A method of setting the drillable bridge plug and a method of removing the drillable bridge plug are disclosed.

The invention relates to a two-stroke engine, in particular to a two-strike compressed air engine assembly which takes compressed air as a power source. The compressed air engine assembly comprises an engine body (1), a multi-cylinder power divider (2), a power plant (4), a controller system (6), an air inlet control and speed regulation valve (23), a high-pressure gas tank group (13), a constant-pressure tank (16), an electronic control unit (ECU) (29) and a tail gas recovery loop. The tail gas recovery loop comprises an air compressor (7), a condenser (11), a tail gas recovery tank (9), an electric turbine one-way air pump (19) and a tail gas noise deadener (22).

A method of operation of a plasma torch and the plasma apparatus to produce a hot gas jet stream directed towards a workpiece to be coated by first injecting a cold high pressure carrier gas containing a powder material into a cold main high pressure gas flow and then directing this combined high pressure gas flow coaxially around a plasma exiting from an operating plasma generator and converging directly into the hot plasma effluent, thereby mixing with the hot plasma effluent to form a gas stream with a net temperature based on the enthalpy of the plasma stream and the temperature and volume of the cold high pressure converging gas, establishing a net temperature of the gas stream at a temperature such that the powdered material will not melt or soften, and projecting the powder particles at high velocity onto a workpiece surface. The improvement resides in mixing a cold high pressure carrier gas with powder material entrained in it, with a cold high pressure gas flow of gas prior to mixing this combined gas flow with the plasma effluent which is utilized to heat the combined gas flow to an elevated temperature limited to not exceeding the softening point or melting point of the powder material. The resulting hot high pressure gas flow is directed through a supersonic nozzle to accelerate this heated gas flow to supersonic velocities, thereby providing sufficient velocity to the particles striking the workpiece to achieve a kinetic energy transformation into elastic deformation of the particles as they impact the onto the workpiece surface and forming a dense, tightly adhering cohesive coating. Preferably the powder material is of metals, alloys, polymers and mixtures thereof or with semiconductors or ceramics and the powder material is preferably of a particle size range exceeding 50 microns. The system also includes a rotating member for coating concave surfaces and internal bores or other such devices which can be better coated using rotation.

When a heating mode is set in a refrigerant cycle system, air is heated in a condenser by condensing high-pressure gas refrigerant, a part of high-pressure refrigerant from the condenser is decompressed in a pressure reducing unit to a middle pressure, and the other part of high-pressure refrigerant from the condenser is heat-exchanged with the middle-pressure refrigerant having passed through the pressure reducing unit in a refrigerant-refrigerant heat exchanger. Therefore, middle-pressure refrigerant having passed through the pressure reducing unit is evaporated in the refrigerant-refrigerant heat exchanger and the evaporated middle-pressure refrigerant is introduced into a gas injection port of a compressor. Thus, in the refrigerant cycle system, heating capacity can be improved due to the gas refrigerant injection into the compressor.

Ion manipulation systems include ion repulsion by an RF field penetrating through a mesh. Another comprises trapping ions in a symmetric RF field around a mesh. The system uses macroscopic parts, or readily available fine meshes, or miniaturized devices made by MEMS, or flexible PCB methods. One application is ion transfer from gaseous ion sources with focusing at intermediate and elevated gas pressures. Another application is the formation of pulsed ion packets for TOF MS within trap array. Such trapping is preferably accompanied by pulsed switching of RF field and by gas pulses, preferably formed by pulsed vapor desorption. Ion guidance, ion flow manipulation, trapping, preparation of pulsed ion packets, confining ions during fragmentation or exposure to ion to particle reactions and for mass separation are disclosed. Ion chromatography employs an ion passage within a gas flow and through a set of multiple traps with a mass dependent well depth.

Novel methods and apparatuses for annealing semiconductor devices in a high pressure gas environment. According to an embodiment, the annealing vessel has a dual chamber structure, and potentially toxic, flammable, or otherwise reactive gas is confined in an inner chamber which is protected by pressures of inert gas contained in the outer chamber. The incoming gas delivery system and exhaust gas venting system are likewise protected by various methods. Embodiments of the present invention can be used, for example, for high-K gate dielectric anneal, post metallization sintering anneal, and forming gas anneal in the semiconductor manufacturing process.

A system is disclosed comprising a high pressure gases source: for example a compressor, a low cross section conduit adapted to convey gases from the compressor, and a patient interface delivering gases to the patient. The patient interface includes valve member which is substantially closed during inspiration and venting externally during expiration. The combination of the low cross section and lightweight conduit and the valve member result in increased patient comfort.

A reheat heat exchanger is provided particularly for use in Rankine cycle power generation systems. The reheat heat exchanger includes a high pressure path between a high pressure inlet and a high pressure outlet. The reheat heat exchanger also includes a low pressure path between a low pressure inlet and a low pressure outlet. The two paths are in heat transfer relationship. In a typical power generation system utilizing the reheat heat exchanger, the high pressure inlet is located downstream from a source of high temperature high pressure working fluid. An expander is located downstream from the high pressure outlet and upstream from the low pressure inlet. A second expander is typically provided downstream from the low pressure outlet. The reheat heat exchanger beneficially enhances the efficiency of power generation systems, particularly those which utilize expanders having inlet temperatures limited to below that produced by the source of working fluid.

The invention relates to an engine, in particular to a V-shaped multi-cylinder aerodynamic engine assembly adopting compressed air as motive power. The V-shaped multi-cylinder aerodynamic engine assembly comprises a multi-cylinder engine body (1), a multi-column motive power distributor (2), motive power equipment (4), a controller system (6), an air inlet control speed regulating valve (23), a high-pressure gas tank group (13), a constant pressure tank (16), an electronic control unit (ECU) (29), a compressed air heating device (101) and an optional second gas supply loop. The second gas supply loop comprises an air compressor (7), a condenser (11), a pressure limiting valve (702), a sequence valve (705) and a tail gas recovery tank (9).

A core-shell composition for gas storage, comprising a hollow or porous core and a shell comprising a nanocomposite. The nanocomposite is composed of an exfoliated layered filler dispersed in a matrix material, which provides high mechanical strength to hold a high pressure gas such as hydrogen and high resistance to gas permeation. Alternatively, the porous core may contain a plurality of cavities selected from the group consisting of shell-hollow core micro-spheres, shell-porous core micro-spheres, and combinations thereof. These core-shell compositions, each capable of containing a great amount of hydrogen gas, can be used to store and feed hydrogen to fuel cells that supply electricity to apparatus such as portable electronic devices, automobiles, and unmanned aerial vehicles where mass is a major concern. A related method of storing and releasing hydrogen gas in or out of a plurality of core-shell compositions is also disclosed.

The invention relates to the field of machining, in particular to a nano particle jet flow micro-scale lubricating and grinding three-phase flow supply system. The system is characterized in that: nano fluid is conveyed to a nozzle by a liquid path, high temperature gas enters the nozzle through a gas path at the same time, the high pressure gas and the nano fluid are fully mixed and atomized in the mixing room of the nozzle, the mixed high pressure gas and nano fluid are accelerated in an acceleration room and enter a vortex room, compressed gas enters from the vent hole of the vortex room, and a three-phase flow is further mixed and accelerated by rotating, and is jetted in the form of atomized liquid drops to a grinding area through the outlet of the nozzle. The system has the advantages that: the helical vent hole of the mixing room of the nozzle is tangent to the wall surface of the mixing room, and the nano fluid and the gas are uniformly mixed; pressure adjusting valves, throttles and flow meters are arranged in the gas path and the liquid path, and the pressure and the flow of the nano fluid and the high pressure gas can be adjusted as required so as to achieve an optimal micro-scale lubricating effect; and the problems of insufficient cooling capability in micro-scale lubricating, the large using quantity of a lubricant in pouring type grinding, high waste liquid processing cost and heavy environment pollution are solved.

An improved air gun for firing paint balls, pellets,, consisting of a passively venting and freeze resistant regulator, a pressure differential trigger mechanism, and a muzzle break with angled sidewalls. The freeze resistant regulator regulates incoming high pressure gas to a user predetermined pressure to operate the gun while avoiding freezing of the regulator associated with frigid incoming compressed gases and high firing rates. This is accomplished by using a heat transmission component formed by the engagement between a hemispheric shaped tip of a regulating pin and a hemispheric cavity of an adjustment piston. Passive venting of gas from the gun upon removal of the pressurized gas supply is provided by the regulator using a reciprocating regulating pin and adjustment piston which combine to compress a seal into a seat only when pressurized gas is attached to the air gun. Once detached from a pressurized air supply the compressed air in the gun vents through the seat. Firing of the gun is achieved using a pressure differential trigger mechanism capable of fine pull adjustment using a trigger biasing mechanism. Greater accuracy of projectiles leaving the gun is provided by the muzzle break featuring of a plurality of elongated oval slots having angled sidewalls to parse propulsion gases from the projectile which reduces air turbulence encountered by the projectile upon exit from the gun.

Launching payloads at high velocity uses high-pressure gas or combustion products for propulsion, with injection of high pressure gas at intervals along the path behind the payload projectile as it accelerates along the barrel of the launcher. An inner barrel has an interior diameter equal to the projectile diameter or sabot containing the projectile. An outer casing surrounds the inner barrel. Structures at intervals attach the outer casing and the inner barrel. An axial gas containment chamber (AGC) stores high pressure gas between the inner barrel wall, the outer casing wall, and enclosure bulkheads. Pressure-activated valves along the barrel sequentially release the high pressure gas contained in the AGC in to the barrel to create a continuously refreshed high energy pressure heads behind the projectile as it moves down the barrel. A frangible cover at the exit end of the barrel allows the barrel to be evacuated prior to launch. The launcher is rapidly recyclable. The valves close automatically after the projectile has exited the barrel, allowing a new projectile to be introduced into the breech and the AGC to be recharged with high-pressure gas.

A fuel injector injects high-pressure gaseous fuel directly into a cylinder of an engine. A small amount of liquid fuel is used in the injector to lubricate sliding portions of the fuel injector in addition to utilizing it as a medium for transmitting driving force. The fuel injector includes a nozzle member having injection holes at its elongated end and a needle slidably disposed in an elongated center hole of the nozzle member. The needle is driven by pressure of the liquid fuel introduced into a control chamber to open or close the injection holes. The pressure in the control chamber is controlled by a switching valve which is in turn driven by an actuator such as an electromagnetic or piezoelectric actuator. The liquid fuel is injected together with the high-pressure gaseous fuel after lubricating the sliding portions between the nozzle member and the needle.

The invention relates to the fields of electric cookers and pressure cooker, and in particular to equipment for implementing water-filtering type rice steaming. According to a water-filtering type high-pressure rice steamer, an electric heating tray is arranged on a base plate of a pot body; a high-pressure inner body is arranged in the pot body; a rice steaming basket is arranged in the high-pressure inner body; a pressure piston lifting device is arranged on a top cap; an air cylinder and a piston are arranged in the pressure piston lifting device; and a piston and a hook are connected to alifting rod. During working of the equipment (the rice steamer), water and rice in the pot body are heated via the electric heating tray, so that a purpose of cooking rice can be achieved; an exhaustchannel in a gas control component is closed via a controller when the water in the pot body is heated to 100 DEG C, and meanwhile, a piston in the air cylinder is pushed to move upwards through high-pressure gas which is generated as the water in the pot body is continuously heated; the rice steaming basket is lifted upwards under the actions of the lifting rod and the hook, and rice, which is cooked by 70%, is filtered out from the water via the rice steaming basket and the rice is well cooked through high-pressure steam and heat energy generated from the water body; therefore, a purpose ofhigh-pressure water-filtering type rice steaming is achieved.

The invention relates to an experimental device in the field of natural gas recovery, and particularly relates to a shale gas reservoir recovery simulation experimental device. The shale gas reservoir recovery simulation experimental device comprises a high-pressure gas source system, an injection system, a model system, a thermostat system, a pressure return system and a data acquisition system, wherein an intermediate container in the injection system and a core holding unit in the model system are positioned in a thermostat. The shale gas reservoir recovery simulation experimental device has the advantages that a plate model core clamping device and two full-diameter core clamping devices are connected, the cores of different dimensions are connected in series, multi-scale pore characteristics in the shale gas reservoir can be simulated, the multi-scale characteristics of shale gas seepage influenced by the multi-scale effect are reflected, the recovery process of the shale gas reservoir can be accurately simulated, and recovery mechanisms and recovery dynamics of the shale gas reservoir in different modes can be comprehensively evaluated; and meanwhile, a large-scale shale core adsorption/desorption experiment can be performed by utilizing the experimental device, and a gas adsorption/desorption rule of the large-scale shale core under different conditions is researched.

The invention discloses an adsorption-desorption-seepage experiment system for loaded coal containing gas under the condition of varying temperatures. The experiment system comprises a tank body used for holding constant-temperature water bath. A triaxial pressure chamber is arranged in the tank body; a coal chamber is arranged in the triaxial pressure chamber; a coal sample is installed in the coal chamber; a foil gauge is adhered onto the coal sample and is connected with a dynamic strain meter; one end of the coal chamber is provided with an opening, and a pressure head is mounted in the opening and connected with a pressure unit; the coal chamber is communicated with a vacuum pipeline and a high pressure gas-transmission pipeline; and a confining pressure pipeline used for conveying hydraulic oil is communicated with a cavity between the coal chamber and the triaxial pressure chamber. The adsorption-desorption-seepage experiment system for loaded coal containing gas under the condition of varying temperatures in the invention has the advantages of a simple structure, convenient operation, reasonable design, high experiment precision and a low price.