32 results about "Compressible fluid flow" patented technology

The present disclosure relates to systems, devices, and methods for automated fluid transfer. In an embodiment, the present disclosure relates to a system for fluid transfer between a fluid device and a cartridge for cell processing. The system comprises a first portion comprising an instrument head coupled to a gantry, the instrument head comprising a pneumatic actuator, a peristaltic pump, and a gripping feature for receiving the fluid device. The peristaltic pump may be configured to engage compressible fluidic tubing of a fluid pump module of the fluid device to transfer the fluid between the fluid device and the cartridge. The system further comprises a second portion comprising a docking station for receiving the cartridge. In some variations, movement of the pneumatic actuator relative to the fluid pump module causes occlusion of the compressible fluidic tubing of the fluid pump module by the peristaltic pump.

This disclosure presents a method for dispensing compressible fluids, specifically natural gas, using a heat exchanger to optimize temperature and pressure conditions. The process involves receiving a first supply stream at an initial temperature and expanding a second supply stream to a lower pressure. Heat is exchanged between these streams within the heat exchanger, reducing the temperature of the first stream for efficient dispensing. This method is particularly suited for filling compressed natural gas (CNG) tanks, ensuring continuous operation without interruptions. The system maintains the first stream's pressure below 4,500 psig and achieves a target density based on reference conditions. Additionally, the method supports integration with natural gas pipelines, maintaining suitable discharge temperatures. The approach enhances energy efficiency by eliminating the need for auxiliary refrigeration, making it ideal for onsite wellhead applications. This innovative system offers a streamlined solution for CNG operations, promoting economic and environmental benefits.

A system includes storage devices that deliver compressible fluid to a demand and a flow line network extending between and fluidly connecting the plurality of storage devices and the demand. The system further includes stoppage valves and flow control valves in fluid communication with the flow line network and a plurality of heaters in thermal communication with the flow line network. The stoppage valves fluidly connect the storage devices in a series arranged sequentially from a highest-pressure storage device to a lowest-pressure storage device, fluidly disconnect one or more storage devices from the series, and fluidly connect one or more additional storage devices to the series. The flow control valves control a flow rate of compressible fluid delivered from each storage device. The heaters increase a temperature of the compressible fluid delivered from each storage device.

The application discloses a mass flowmeter pipe diameter selection method, device, equipment, medium and program product, and relates to the technical field of fluid metering. The method comprises the following steps: calculating the working condition density and the gas sound speed of the compressible fluid according to the working condition parameters of the compressible fluid; calculating the theoretical minimum pipe diameter that meets the maximum mass flow and meets the flow speed constraint according to the maximum mass flow contained in the flow range, the working condition density, the gas sound speed and the flow speed threshold contained in the flow speed constraint; screening a candidate pipe diameter set greater than or equal to the theoretical minimum pipe diameter in a standard pipe diameter database; for a single candidate pipe diameter, comprehensively evaluating the precision error, the pressure loss and the aerodynamic noise to obtain the comprehensive score of the candidate pipe diameter; and screening the target pipe diameter of the mass flowmeter from the candidate pipe diameters according to the comprehensive scores of the candidate pipe diameters. The technical scheme of the embodiment of the application improves the rationality of the coriolis mass flowmeter pipe diameter of the compressible fluid and the precision of the coriolis mass flowmeter.

Devices, systems, and methods for supporting the body of user are described. Devices, systems, and methods can employ a plurality of cells where each of the cells within the plurality of cells can comprise a bladder containing air or another compressible fluid supported by a base that forms a fluid-tight seal with the bladder The base and bladder can be constructed and arranged so that the bladder forms a rolling diaphragm portion with the base. The height and / or applied pressure in response to an applied load of such bladder may be adjustable substantially independent of the crosssectional shape and dimensions of the bladder. Each of the cells within the plurality of cells which may be a subset or all of the cells of a given support, can also comprise, or otherwise be operatively associated with its own: pressure sensor, height sensor, or both, and / or controllable inlet / outlet valve(s).

The invention discloses a compressible turbulence frictional resistance decomposition method and device, a medium and equipment. The method comprises the following steps: acquiring an instantaneous variable of a compressible turbulence flow field to be subjected to resistance decomposition; calculating an average value and a pulsation value of a plurality of single variables in the vorticity transport equation based on the instantaneous variables; respectively calculating the spatial derivative value of the average value, the spatial derivative value of the pulsation value and the spatial derivative value of the instantaneous variable of each single variable; according to the average value, the pulsation value and the spatial derivative value of each single variable, calculating the average value and the pulsation value of a plurality of combined variables; performing integral calculation on a plurality of parameters of the vorticity transport equation based on the average value and the pulsation value of the plurality of combined variables; and calculating the contribution value of each parameter to the compressible turbulence friction resistance according to the integral calculation result of each parameter. The device fills the blank of compressible fluid mechanics, can be applied to high lift devices such as vortex generators, and has the advantages of high comprehensiveness, diversity and universality.

A roller pump comprising a pump head operably connectable to be driven by a pump driver wherein the pump head comprises: a pump stator; the pump rotor is arranged to rotate in the pump stator, the pump rotor comprises one or more rollers, each roller is connected to a corresponding roller block, and the roller blocks can move in the radial direction relative to the central axis of the pump head; the blocking adjusting mechanism is connected to the roller blocks of the rollers, and the blocking adjusting mechanism is operated to move the roller blocks in the radial direction relative to the central axis of the pump head so as to compress and partially block a compressible fluid pipeline arranged in the roller path; and a sensor device configured to measure a pressure applied by the roller block of the at least one roller when the compressible fluid conduit is compressed by the one or more rollers.

To solve the problem that it is difficult to specify a condition for operating sprinkler equipment.SOLUTION: A sprinkler system includes a pipe in which a vacuum or a compressible fluid is present at a pressure different from that of outside air, a closed sprinkler head provided in the pipe, a chamber provided in the pipe, and a detector provided between the pipe and the chamber to detect a flow of the compressible fluid.SELECTED DRAWING: Figure 1

A fluidic tactile sensor includes a core having an outer surface, channels formed within the core, and an elastic skin disposed over a surface portion of the outer surface. Cells are formed between the surface portion and the elastic skin. Each cell is connected to one of the channels through an opening of the channel on the surface portion. Compressible fluid volumes extend between the elastic skin and the core. Each compressible fluid volume includes a first fluid volume formed inside one of the cells and a second fluid volume formed inside the channel connected to the one of the cells. The first and second fluid volumes contain portions of a continuous compressible fluid medium. A contact force applied to the elastic skin at a location corresponding to a given cell produces a measurable change in a fluid pressure of the continuous compressible fluid medium associated with the given cell.

An acoustic device for achieving a zero static bulk modulus, and a method. The acoustic device may comprise: an acoustic cavity, having a compressible fluid medium therein; a composite plate, arranged to vibratably close an opening on at least one side of the acoustic cavity; and an instability introducing member, coupled to the composite plate, and arranged to provide negative stiffness to the composite plate during vibration of the composite plate, so as to counteract positive stiffness of both the acoustic cavity and the composite plate, thereby achieving a critical state of an acoustic unit, the critical state indicating that a static bulk modulus of the acoustic unit approaches or equals zero.

A pressure relief valve (1) for a cryogenic fluid system of an aircraft, the pressure relief valve including a valve inlet (6) for connecting the pressure relief valve to a conduit (3) of the compressible fluid system and an intermediate chamber (10) fluidly connected to the valve inlet via a valve aperture (5). The intermediate chamber has a first frustoconical portion centred about a longitudinal axis. The pressure relief valve includes a valve member (2), wherein the valve member has a valve member outlet (8) and at least one channel (12), wherein the at least one channel is arranged to fluidly connect the intermediate chamber to the valve member outlet. The valve member includes a second frustoconical portion centred about the longitudinal axis. The pressure relief valve also includes a biasing member (4) to bias the valve member closed.

Provided is a tool bracket capable of tilting a spindle body even when a moment load acting on the spindle body is relatively small. A tool bracket includes: a housing including a cylinder chamber extending along a cylinder axis; a piston urged by compressible fluid toward distal end to reciprocate in the cylinder chamber and having an action portion disposed at distal end; and a tilting body having a tilt axis and disposed in the cylinder chamber in a tiltable manner with respect to the cylinder axis, and includes a centering portion disposed at basal end to abut the action portion, the centering portion presses the piston with the cylinder axis as an action line when the tilt axis is tilted from the cylinder axis.

A system includes a storage tank and a feed line that supplies a compressible fluid from a high-pressure source to a plurality of fluid lines in fluid communication with the storage tank. The plurality of fluid lines includes a first fluid line having a first inner diameter sized to create choked flow conditions of the compressible fluid in the first fluid line at an outlet of the first fluid line and a second fluid line having a second inner diameter greater than the first inner diameter. The system further includes a first valve in fluid communication with the second fluid line and a control circuit in electronic communication with the first valve. The control circuit actuates the first valve to control a flow of the compressible fluid through an outlet of the second fluid line.

A system includes storage devices that deliver compressible fluid to a demand and a flow line network extending between and fluidly connecting the plurality of storage devices and the demand. The system further includes stoppage valves and flow control valves in fluid communication with the flow line network and a plurality of heaters in thermal communication with the flow line network. The stoppage valves fluidly connect the storage devices in a series arranged sequentially from a highest-pressure storage device to a lowest-pressure storage device, fluidly disconnect one or more storage devices from the series, and fluidly connect one or more additional storage devices to the series. The flow control valves control a flow rate of compressible fluid delivered from each storage device. The heaters increase a temperature of the compressible fluid delivered from each storage device.

A device can comprise a housing and a sensor mounted in an arrangement to sense fluid within the housing, and the sensor can be configured to measure a parameter. The device can comprise a purge valve coupled to the housing, the purge valve can be configured to selectively move between a closed configuration and an open configuration to purge fluid from a system. The device can comprise an actuator coupled to the purge valve and configured to selectively move the purge valve from the closed configuration to the open configuration to purge the compressible fluid.

The present disclosure relates to systems, devices, and methods for automated fluid transfer. In one embodiment, the present disclosure relates to a system for fluid transfer between a fluidic device for cell processing and a cartridge. The system includes a first portion including an instrument head coupled to a gantry, the instrument head including a pneumatic actuator, a peristaltic pump, and a gripping feature for receiving a fluid device. The peristaltic pump may be configured to engage a compressible fluid conduit of a fluid pump module of the fluid device to transfer fluid between the fluid device and the cartridge. The system also includes a second portion including a docking base for receiving the cartridge. In some variations, movement of the pneumatic actuator relative to the fluid pump module causes a compressible fluid conduit of the fluid pump module to be occluded by the peristaltic pump.

The utility model relates to the technical field of energy storage devices, in particular to a double-layer leakage-proof energy accumulator which comprises a shell with an inner cavity, a piston assembly is connected in the shell in a sealed and sliding mode to divide the inner cavity into a first cavity and a second cavity, the first cavity is used for being communicated with fluid products, and the second cavity is used for being communicated with fluid products. A second cavity is formed in the shell, a sleeve connected with the shell is arranged in the second cavity, the end, facing the second cavity, of the piston assembly is connected into the sleeve in a sealed and sliding mode so that a closed third cavity can be formed in the sleeve, and the third cavity is used for containing compressible fluid. According to the scheme, due to the fact that the third cavity is formed in the second cavity, when sealing between the piston assembly and the third cavity fails, compressible fluid can leak into the second cavity from the third cavity, and due to the fact that the piston assembly is connected with the shell in a sealed mode, the compressible fluid can leak into the second cavity from the third cavity. And the compressible fluid entering the second chamber does not enter the first chamber and is in contact with the fluid product, so that the influence on the product quality is avoided.

The invention relates to the technical field of cable assemblies, in particular to a dynamic pressure balance airtight cable assembly based on fluid coupling, which comprises a conductor layer, an insulating layer, an annular support layer, a wrapping layer, a pressure guide layer and an outer sheath which are sequentially arranged from inside to outside, the pressure guide layer comprises an inner ring cavity, a sealing ring and an outer ring cavity which are sequentially arranged from inside to outside; a plurality of groups of inner elastic diaphragms are uniformly distributed in the inner ring cavity in the circumferential direction so as to equally divide the inner space of the inner ring cavity into a plurality of inner cavities; and a flow channel is formed in the sealing ring. According to the pressure guiding layer, the annular cavity is divided into pressure coupling units with the phase difference of 90 degrees through the inner / outer elastic diaphragms, and stress vector conversion of a compression face and a stretching face is achieved during bending by means of the dynamic migration characteristic of incompressible fluid. And self-balancing circulation of short-diameter stress absorption and long-diameter elastic extension is formed.

This invention relates to a deep-sea sonar, comprising a shell, a transducer module, and an elastic module. The shell has a first mounting hole and a second mounting hole on its sidewall. The transducer module is mounted at the first mounting hole, and the elastic module is mounted at the second mounting hole. The shell, the transducer module, and the elastic module form a pressure balance cavity filled with a compressible fluid medium. The elastic module includes a first elastic layer, a rope net, and a second elastic layer. The rope net is adhered between the first and second elastic layers, and a portion of the first and second elastic layers fills the mesh of the rope net. The rope net includes a plurality of tensile ropes, the elongation of which is less than the elongation of the first and second elastic layers.

The application discloses a flexible cover layer for inhibiting underwater bubble jet load and a manufacturing method thereof, and comprises a flexible cover layer, a rubber outer layer and a closed-cell foam sandwich layer; the rubber outer layer and the closed-cell foam sandwich layer are pasted to form the flexible cover layer; the other side of the closed-cell foam sandwich layer is pasted to a cabin wall or a side plate of an underwater vehicle; the rubber outer layer supports and protects the closed-cell foam sandwich layer, and prevents the closed-cell foam sandwich layer from being torn under the action of explosion impact due to the thin single foam wall; the manufacturing method comprises the following steps: obtaining material parameters through experiments, obtaining explosion load information through a scaled-down experiment; presetting the thickness of each layer, coupling numerical solutions of compressible fluid models and incompressible fluid models with a finite element structure model, performing finite element numerical calculation, optimizing the structure thickness according to the finite element calculation result, and manufacturing the flexible cover layer according to the thickness. The application has the advantages of better absorbing shock wave energy generated by underwater explosion and inhibiting and blocking the impact of high-speed bubble jet load.

Provided is a floating seismic isolation system, including: a storage space in which a liquid for allowing a floating structure to float in the liquid is stored; a first chamber, inside which a compressible fluid is accommodated, and which has a volume that is variable according to a pressure fluctuation of the liquid; and a second chamber, inside which the compressible fluid is accommodated, and which has a pressure or a volume that passively changes according to a volume change of the first chamber.

The invention relates to a rotor for a compressible fluid pump, in particular a blood pump that can be introduced through a blood vessel into a patient's body, wherein said rotor comprises one or more conveying elements (15), is compressible and expandable between a first compressed state and a second radially expanded state, is made at least partially from a plastic reinforced with reinforcing elements, in particular fibers (10, 11, 13, 18, 19, 55, 56, 62, 63) and is provided for rotation about an axis of rotation (14). According to the invention, the rotor is tensioned in the first, compressed state and free from external stresses in the second, expanded state. A third state exists, which the rotor (42) occupies in the operating state under load. The reinforcing elements, in particular fibers, extend in the rotor in the third state at least in sections in a stretched manner.

A wearable blood pressure meter includes a semi-conformable bladder, serving as a reservoir for an incompressible fluid, and a pressure sensor. The semi-conformable bladder includes a rigid housing defining a cavity within which the incompressible fluid is rigidly constrained and an elastic membrane for elastically constraining the incompressible fluid. The elastic membrane extends across an aperture into the cavity through the rigid housing. The elastic membrane conforms to a body part at the aperture when pressed against the body part. The pressure sensor mechanically couples to the incompressible fluid to measure pressure signals emanating from an artery within the body part and which propagate through the conformable membrane and the incompressible fluid to the pressure sensor.

The invention relates to the technical field of simulation experiments, in particular to a thermodynamic system simulation modeling method and system, electronic equipment and a storage medium, and the thermodynamic system simulation modeling method comprises the following steps: respectively establishing branch models for incompressible fluid and compressible fluid; establishing a node model based on the branch model; wherein nodes with the pressure of P in the node model are connected with m nodes or boundaries at the upstream through m branches, and are connected with n-m nodes or boundaries at the downstream through n-m branches; m and n are positive integers; calculating the pressure on each node in n nodes based on the node model; and calculating the flow on each branch based on the pressure on each node. According to the method, the simulation precision and the calculation efficiency of the thermodynamic system can be improved, and the equipment characteristics can be simulated more accurately, so that serious accidents and the like are analyzed and researched, the economic loss is avoided, and the usability is high.

A system includes a storage tank and a feed line that supplies a compressible fluid from a high-pressure source to a plurality of fluid lines in fluid communication with the storage tank. The plurality of fluid lines includes a first fluid line having a first inner diameter sized to create choked flow conditions of the compressible fluid in the first fluid line at an outlet of the first fluid line and a second fluid line having a second inner diameter greater than the first inner diameter. The system further includes a first valve in fluid communication with the second fluid line and a control circuit in electronic communication with the first valve. The control circuit actuates the first valve to control a flow of the compressible fluid through an outlet of the second fluid line.

In some embodiments, a method for controlling fluid flow through a downhole pump system in a borehole includes moving, via a downhole pump residing below a tubular in the borehole, a first fluid through the tubular, wherein the first fluid includes a compressible fluid. The method may further include increasing an intake pressure of the downhole pump while the first fluid is moving via a control valve system comprising a throttling valve.

A system includes a plurality of storage devices operable to receive compressible fluid from a source and a flow line network extending between and fluidly connecting the plurality of storage devices and the source. The system further includes a plurality of stoppage valves and a plurality of flow control valves in fluid communication with the flow line network and a plurality of chillers in thermal communication with the flow line network. The plurality of stoppage valves fluidly connects the plurality of storage devices in a series arranged sequentially from a highest-pressure storage device to a lowest-pressure storage device, fluidly disconnects storage devices from the series, and fluidly connects additional storage devices to the series. The plurality of flow control valves controls a flow rate of compressible fluid received by each storage device. The plurality of chillers decreases a temperature of the compressible fluid received by each storage device.

A wave energy absorbing device comprises a floating wave energy absorbing body (1) and a spring device (2), where the spring device is positioned inside the floating wave energy absorbing body. The spring device is designed to absorb sudden accelerations to mitigate excess forces that would otherwise affect the floating wave energy absorbing body and its connected components. The wave energy absorbing device comprises a self-regulating buoyancy control system comprising one or more ballast chambers and one or more accumulators and is attached to the spring device (2) to power the self-regulating buoyancy control system by forcing compressible fluid to flow between the one or more ballast chambers and the one or more accumulators, thereby ballasting the floating body and causing it to submerge under water in high waves.

A roller pump including a pump head operably connected to be driven by a pump drive, wherein the pump head includes: a pump stator; a pump rotor disposed to rotate within the pump stator, wherein the pump rotor includes one or more rollers, wherein each roller is connected to a respective roller block that is moveable radially with respect to a central axis of the pump head; an occlusion adjustment mechanism, connected to the roller block of each roller, wherein the occlusion adjustment mechanism operates to move each roller block radially with respect to the central axis of the pump head in order to compress and partially occlude a compressible fluid conduit disposed within the raceway; and a sensor arrangement configured to measure a pressure exerted by the roller block of at least one roller when the compressible fluid conduit is compressed by one or more of the rollers.