848 results about "Fluid system" patented technology

A fluidics system includes a cassette having a saline subsystem, a contrast subsystem, and a vacuum subsystem. The fluidics system further includes a splitter and a first tubing set coupled to the cassette and splitter, the first tubing set having a single saline channel, a single contrast channel, and a single vacuum channel. The fluidics system further includes two or more hub assemblies, at least one of the two or more hub assemblies configured to have a third saline flow-path, a third contrast flow-path, and a third vacuum flow-path to provide saline, contrast and vacuum to the lumen of a catheter coupled to the at least one of the two or more hub assemblies. The fluidics system further includes a second tubing set having a plurality of tube groups, each tube group coupled to the splitter and to one of the two or more hub assemblies.

A fluidics system includes a cassette having a saline subsystem, a contrast subsystem, and a vacuum subsystem. The fluidics system further includes a splitter and a first tubing set coupled to the cassette and splitter, the first tubing set having a single saline channel, a single contrast channel, and a single vacuum channel. The fluidics system further includes two or more hub assemblies, at least one of the two or more hub assemblies configured to have a third saline flow-path, a third contrast flow-path, and a third vacuum flow-path to provide saline, contrast and vacuum to the lumen of a catheter coupled to the at least one of the two or more hub assemblies. The fluidics system further includes a second tubing set having a plurality of tube groups, each tube group coupled to the splitter and to one of the two or more hub assemblies.

An assembly includes a plurality of fluid bladders including at least a first fluid bladder and a second fluid bladder, and a fluid manifold in fluid communication with the plurality of bladders. The fluid manifold includes at least a first passage and a second passage. A first port fluidly connects the first fluid bladder to the first passage, a second port fluidly connects the second fluid bladder to the first passage, and a third port fluidly connects the second fluid bladder to the second passage. A first check valve is positioned in the second passage and is moveable between a first position, where fluid enters the third port and inflates the second fluid bladder, and a second position where fluid is directed through the third port to a vent.

A weekly critical fluid system of a thermal management system associated with a turbine engine may include one or more sensors configured to generate a sensor output corresponding to one or more phase properties of a weekly critical fluid flowing through a cooling circuit of the thermal management system, and a controller configured to control the one or more sensors to generate a sensor output corresponding to one or more phase properties of the weekly critical fluid flowing through the cooling circuit of the thermal management system. The controller is configured to generate a control command based at least in part on the sensor output, the control command being configured to control one or more controllable components of the thermal management system. The one or more sensors may include one or more phase detection sensors, such as acoustic sensors.

An assembly is provided with a first layer connected to a second layer to form a bladder, with the first layer defining a first aperture therethrough, and one of the first or second layers defining a second aperture therethough. The third layer is connected to the first layer and positioned between the first and second layers within the bladder. The third layer is movable between a first position covering the first aperture, and a second position spaced apart from the first aperture. A seat assembly is also provided.

Disclosed is an energy-saving control method for a shield tunneling machine, the method comprising: when an advance speed of a shield tunneling machine changes during a tunneling process, according to the change in the advance speed, adjusting one or more of a spoil discharge system (7), a fluid system (10) and an electrical system (11). The spoil discharge system (7) performs adjustment in the following method: calculating a corresponding amount of excavated spoils according to the advance speed, then calculating a theoretical spoil discharge speed according to the amount of excavated spoils, and a matched spoil discharge system (9) adjusting the spoil discharge speed thereof according to the theoretical spoil discharge speed. The fluid system (10) performs adjustment in the following method: according to the magnitude of the advance speed of the shield tunneling machine, the fluid system (10) adjusts the flow rate of a fluid in the corresponding fluid system. The electrical system (11) performs adjustment in the following method: according to the magnitude of the advance speed of the shield tunneling machine, the electrical system adjusts the active power of a transformer of the electrical system. The present application can solve the problems of high apparatus energy consumption and severe energy waste of shield tunneling machines caused by large apparatus installation power, numerous auxiliary apparatuses, unreasonable design, etc. in the prior art. Also disclosed is a system using the method.

The invention relates to the technical field of carbon dioxide sequestration and shale gas development, and particularly discloses a shale micro-nano pore multiphase multicomponent competitive adsorption data determination method and device, and the method comprises the steps: obtaining a shale core sample of a target area, and determining the type and relative content change characteristics of surface functional groups of the shale core sample; key structures and force field parameters of shale clay minerals in a target block are collected, and a shale clay mineral molecular model is established; establishing a plurality of fluid molecular models; establishing slit models, and establishing a multiphase fluid system model between the slit models to obtain a stable configuration; applying an external electric field to the stable configuration, and performing molecular dynamics calculation to obtain molecular trajectory coordinates and dynamics information of the multi-phase multi-component fluid; and calculating competitive adsorption data of the shale micro-nano pore multi-phase multi-component fluid under the action of the electric field. According to the scheme, the occurrence state and the competitive adsorption behavior of the shale micro-nano pore multi-phase multi-component fluid under the action of the electric field can be disclosed from the molecular scale.

Aseptic fluid coupling devices can be used for fluid systems and manufacturing processes that require sterilized fluid flow pathways. For example, aseptic fluid coupling devices that include removable membrane strips that protect the interior of the aseptic fluid coupling devices from contamination prior to use can be used in such contexts. Methods for attaching removable membranes to the aseptic fluid coupling devices can include heat sealing using a protruding die that reduces the resultant tension of the removable membranes.

A fluid system is provided for an aircraft engine. This fluid system includes a lubricant reservoir and a pressure relief system. The lubricant reservoir includes an internal volume. The pressure relief system includes a sensor system, a pressure relieve valve and a controller. The sensor system is configured to provide sensor data indicative of an air pressure within the internal volume. The pressure relief valve is fluidly coupled with the internal volume. The controller is configured to control operation of the pressure relieve valve based on the sensor data.

Systems and methods presented herein enable coordinated pumping operations. An example system may include a treatment fluid system configured to pump a treatment fluid into a wellbore, a pump-down system configured to pump a pump-down fluid into the wellbore to convey a perforating tool, a fluid valve system configured to selectively fluidly connect and disconnect the treatment fluid system and the pump-down system to and from the wellbore, and a controller communicatively connected to the treatment fluid system, the pump-down system, and the fluid valve system. The controller may be configured to monitor operational status of the treatment fluid system, the pump-down system, and the fluid valve system, and control operations of the treatment fluid system, the pump-down system, and the fluid valve system based at least in part on the operational status of the treatment fluid system, the pump-down system, and the fluid valve system.

A method for detecting leakage in a fluid system. Some embodiments of the method comprise: receiving a plurality of measured pressure values of a fluid pressure in the fluid system measured at different points in time; computing, from the received pressure values, a first pressure gradient at a first point in time; computing, from the received pressure values, a second pressure gradient at a second point in time, later than the first point in time, wherein the fluid pressure in the fluid system at the first point in time is higher than the fluid pressure in the fluid system at the second point in time; detecting presence of a leakage responsive to the magnitude of the second pressure gradient being smaller than the magnitude of the first pressure gradient.

Washer fluid systems are provided for motor vehicles. The washer fluid systems may supply a washer fluid for cleaning various front and rear mounted components (e.g., cameras, sensors, etc.) of the vehicle. An exemplary washer fluid system may include a first washer fluid reservoir for providing the washer fluid to components located within a front zone of the vehicle, and a second washer fluid reservoir for providing the washer fluid to components located within a rear zone of the vehicle. The rear zone is fluidly isolated from the front zone. The second washer fluid reservoir may be mounted within a cargo bed of the vehicle.

The invention provides an energy recovery system and a ship. The energy recovery system comprises a fluid conveying pipe set, one end of the fluid conveying pipe set is used for being connected with a ship fluid system, and the other end of the fluid conveying pipe set is used for discharging fluid; the energy recovery assembly is connected to the fluid conveying pipe set, and the energy recovery assembly is used for utilizing kinetic energy of fluid and changing gravitational potential energy to move so as to generate electric energy; and the frequency conversion assembly is electrically connected with the energy recovery assembly and is used for processing and outputting the recovered electric energy. According to the system, kinetic energy and gravitational potential energy of seawater in a ship fluid system are recycled, effective supplementation can be provided for a ship power system, and then the overall energy efficiency of a ship is improved.

A method is provided for determining a gas charge pressure PcalcGC of a hydraulic accumulator within a hydraulic fluid system. The method includes receiving pressure decay data representing the pressure decay within a self-pressurizing hydraulic reservoir of the hydraulic fluid system as the self-pressurizing hydraulic reservoir depressurizes from an operating pressure of the self-pressurizing hydraulic reservoir towards atmospheric pressure. The method also includes calculating the gas charge pressure PcalcGC of the hydraulic accumulator using the received pressure decay data of the self-pressurizing hydraulic reservoir.

Aseptic fluid coupling devices can be used for fluid systems and manufacturing processes that require sterilized fluid flow pathways. For example, aseptic fluid coupling devices that include removable membrane strips that protect the interior of the aseptic fluid coupling devices from contamination prior to use can be used in such contexts. Methods for attaching removable membranes to the aseptic fluid coupling devices can include the use of a pre-formed membrane or heat sealing using a protruding die that reduces the resultant tension of the removable membranes.

Device for providing electrical energy, comprising an electrical energy storage device (14; 14') for storing electrical energy, in particular a traction accumulator of an electric, hybrid or fuel cell vehicle, and a fuel cell arrangement (74; 74') for generating electrical energy, wherein the electrical energy storage device (14; 14') is thermally coupled or can be coupled to the fuel cell arrangement (74, 74') by means of a heat transfer arrangement, wherein the device has a first fluid circuit (12, 70; 94, 112) to which the electrical energy storage device (14; 14') is assigned, wherein the first fluid circuit (12, 70; 94, 112) is permeable by a first fluid, wherein the first fluid circuit (12) is thermally coupled to the fuel cell arrangement (74; 74') via at least one first heat exchanger (18; 18'), wherein the device has a second fluid circuit (12, 70; 94,112) has the fuel cell (74;74') is assigned, wherein the second fluid circuit (12, 70; 94, 112) is permeable to a second fluid, wherein the device has a heat exchanger (18, 18') with which heat transfer between the first fluid and the second fluid can be generated, wherein the device has control devices, wherein the fluid circuits (12, 70; 94, 112) are each a sub-circuit of a fluid guide system (12, 70; 94, 112) with several sub-circuits, the volume flows of which can be controlled by the control devices, wherein a heating device (32, 32') of the fuel cell (74; 74') and the electrical energy storage device (14; 14') are arranged in the first fluid guide system (12, 70; 94, 112) and the fuel cell (74; 74') is arranged in the second fluid guide system (12, 70; 94, 112), thereby characterized in that the heating device (32, 32') is designed as a burner which is operated with hydrogen.;

The invention provides a leak-proof material for well cementation prepad fluid, a preparation method of the leak-proof material, a well cementation leak-proof prepad fluid system and application of the leak-proof material. The method comprises the following steps: mixing an ester organic monomer, a benzene organic monomer and 2-acrylamido-2-methylpropanesulfonic acid, stirring at 200-300 rpm to obtain a mixed solution, adding water at a speed of 2-10 mL / min, and adjusting the pH value to 6-8 to obtain an emulsion M1; stirring the emulsion M1 at 300-500 rpm, mixing the emulsion M1 with the initiator solution M2, and carrying out a first reaction at 70-75 DEG C to obtain an intermediate product M3; mixing an ester organic monomer and 2-alkenyl amido-2-methylpropanesulfonic acid to obtain a mixture M4; mixing a self-crosslinking monomer, an initiator and water to obtain a mixture M5; the mixture M4 and the mixture M5 are added into the intermediate product M3 at the speed of 2-10 mL / min, a second reaction is conducted, and the leakproof material for the well cementation prepad fluid is obtained.

The invention discloses an edge processing method, device and system for fluid system data, and the method comprises the steps: a dynamic data segmentation step: carrying out the dynamic segmentation of the operation data of the device based on a predefined or on-line recognized key event, the key event being an event representing the significant change of the operation logic or state of the device; when the occurrence of any key event is detected, taking the occurrence moment of the event as an end point of the current statistical aggregation period and a starting point of the next statistical aggregation period; a differential processing step: in each statistical period defined by the dynamic data segmentation step, performing differential statistical aggregation or feature extraction on different types of operation data according to a preset differential data processing strategy; and a data uploading step: packaging a result of the differentiation processing step into structured data, and uploading the structured data to a cloud server according to a preset uploading strategy. According to the method, the data transmission quantity is remarkably reduced, and meanwhile, the data analysis value is greatly improved.

Systems and methods for monitoring conductivity of a fluid comprising generating a first measurement indicative of the conductivity of the fluid, determining whether a value of the first measurement is within the first calibration range, responsive to determining that the value of the first measurement is not within the first calibration range, calibrating the conductivity sensor with a second calibration range that includes the value of the first measurement, generating a second measurement indicative of the conductivity of the fluid.

A system configured to enclose a premature fetus within an extracorporeal environment to promote growth of the fetus and increase viability of the fetus, The system includes a chamber having an interior space configured to enclose the fetus, a first fluid circuit that delivers sterile fluid to the chamber, and a second fluid system that transfers oxygen to the fetus. The system chamber includes a stop mechanism including a clamp and an actuator, the clanip positioned in the interior space, the actuator coupled to the clamp such that movement of the actuator moves the clamp, and the actuator positioned at least partially outside the interior space. A method of using the system to treat hyperbilirubinemia is also provided.

The invention relates to the technical field of electromagnetic valves, and discloses a low-turbulence electromagnetic valve with a conical flow guide valve element structure, which comprises a valve body, pilot valve components are mounted at the left end and the right end of the valve body, direct-acting iron core components are mounted at the opposite ends of the pilot valve components on the left side and the right side, and a main valve element is arranged in a main runner of the valve body. The valve body and the main valve element are jointly provided with a protection part, and the valve body is provided with a lubricating part corresponding to the main valve element. The low-turbulence electromagnetic valve provided with the conical flow guide valve element structure can effectively solve the problems that in the prior art, severe turbulence is generated when a medium flows through, pressure loss is increased, energy consumption is increased, pipeline vibration and cavitation phenomena are induced, and the stability of a high-purity fluid system is seriously restricted; the problems that abrasion is caused by frequent reciprocating motion of the valve element in the valve body, the fit clearance is gradually increased, inner leakage and response delay occur, even clamping stagnation and failure of the valve element are caused by excessive abrasion, and the mechanical service life is directly influenced are solved.

The invention relates to a fluid module (1) for use in a fluid system, comprising a fluid guiding unit (2) through which a fluid can flow and which has an inflow-side inlet (2.1), an outflow-side outlet (2.3), and a flow channel (2.2) that extends therebetween and comprising a functional unit (3) which is fluidically connected to the flow channel (2.2) via an installation interface (4), wherein the installation interface (4) has a bayonet closure (5) and a reverse rotation protection (6) for securing the functional unit (3) to the fluid guiding unit (2) without tools. The invention additionally relates to a fluid module system comprising at least one fluid guiding unit (2) and different functional units (3) for carrying out different functions in a fluid, said functional units being selectively connectable to the fluid guiding unit in order to form a fluid module (1), and to a method for connecting the functional unit (3) and the fluid guiding unit (2).

An actuator system for articulated mechanism may have a fluid actuator having a displaceable member operating an output configured to apply an output force to the articulated mechanism. A fluid system may be in fluid communication with the fluid actuator to supply the fluid actuator with motive fluid to contribute to the output force. The fluid system may include a pressure reservoir configured for storing fluid, a pumping device for controlling a pressure of the fluid in the reservoir, and a circuit for directing the fluid from the reservoir to the fluid actuator. An actuator device may be operatively connected to the fluid actuator to apply a variable force to the displaceable member to contribute to the output force.

A method for detecting leakage in a fluid system, comprising: receiving a pressure signal indicative of measured pressure values of a pressure in the fluid system measured at different points in time; determining a first filtered pressure signal indicative of variations of the measured pressure values over a first time scale; determining a second filtered pressure signal indicative of variations of the measured pressure values over a second time scale, shorter than the first time scale; outputting a leakage warning based on a comparison of the first filtered pressure signal and the second filtered pressure signal.

The invention relates to a fluid system dynamic behavior prediction method based on multi-parameter influence and a neural network model, belongs to the technical field of fluid system prediction, and solves the problem of low prediction precision caused by the fact that the influence of multiple factors is not comprehensively considered in fluid behavior prediction in the prior art. The method comprises the steps that dynamic behaviors of a fluid system are analyzed, multi-parameter influences are comprehensively considered, and a phase function model and a displacement function model of the fluid system are constructed; carrying out numerical solution on the dynamic response of the fluid system under complex excitation based on the phase function model and the displacement function model, and constructing a first training sample set and a second training sample set; training a first neural network model for solving a phase prediction value of the fluid system displacement in real time by using the first training sample set, and training a second neural network model for solving a prediction value of the fluid system displacement in real time by using the second training sample set; and utilizing the first neural network model and the second neural network model to predict the dynamic behavior of the fluid system.

The invention relates to the technical field of medical teaching, and discloses a noninvasive intracranial pressure continuous monitoring teaching device and a fluctuation trend prediction method.The noninvasive intracranial pressure continuous monitoring teaching device comprises a protective shell and a closed-loop fluid system integrated in the protective shell, and the closed-loop fluid system is composed of a pump body, an intracranial simulation block, a first connecting pipe, a second connecting pipe, a third connecting pipe and a pressure regulating valve; the output end of the pump body is communicated with an input cavity of the intracranial simulation block through a first connecting pipe, the backflow end of the pump body forms a closed loop through a second connecting pipe, a pressure adjusting valve and a third connecting pipe, a detector used for collecting simulated intracranial pressure data in real time is arranged at the top end of the intracranial simulation block, and a display screen is arranged on the outer surface of the protective shell. A closed-loop fluid loop is constructed through a pump body, an intracranial simulation block and a pressure regulating valve regulated and controlled by PID, cerebrospinal fluid circulation is dynamically simulated, and the problem that traditional teaching lacks real pathological environment simulation and operation safety is effectively solved in combination with an embedded training lumbar puncture hole.

The invention relates to the technical field of computational fluid dynamics, and discloses a full-time-domain fluid dynamics simulation optimization method and system, and the method comprises the following steps: S1, collecting flow field data through a sensor, and constructing a time-domain Navi er-Stokes fluid dynamics model; s2, inputting the model in the S1 into a machine learning prediction module; s3, calculating a pneumatic phase lag amount and generating a complex frequency domain phase response function; s4, generating a virtual damping control instruction in real time; and S5, feeding back the damping control instruction optimized in the step S4 to the CFD solver. According to the method, reliable extrapolation of the evolution trend of the flow field is realized by fusing a physical solver and a two-channel prediction mechanism of the LSTM, the simulation time step length is remarkably expanded in combination with dynamic generation of a discrete phase compensation function, and the problem of rapid increase of computing resources caused by strict limitation of the time step length is solved; therefore, the simulation period of a complex fluid system is shortened.

The invention relates to the field of fluid control devices in semiconductor liquid paths, and provides a precise control on-off valve for a semiconductor liquid path and an assembling method thereof, and the precise control on-off valve comprises a valve seat, a cylinder assembly combined on the valve seat, a diaphragm valve plate accommodated in the valve seat, and an adjusting wheel arranged on an upper cover of the cylinder. The air cylinder assembly comprises an air cylinder upper cover and an air cylinder body which are connected through a rotary lock catch structure, and a piston assembly and a limiting rod set are assembled in the air cylinder assembly. And the diaphragm valve plate is driven by the cylinder assembly to seal or separate from the valve port of the valve seat. The adjusting wheel is connected with the limiting rod set and used for adjusting lifting of the limiting lead screw, and then the maximum upward moving position of the piston assembly and the opening degree of the valve are precisely limited. The valve breaks through the bottleneck that a traditional mechanical valve is prone to abrasion and leakage, achieves the effect of precise fine adjustment of flow, and meanwhile greatly improves the flow stability of long-term operation and the clean safety of an ultra-pure fluid system.

The invention relates to an underground intelligent electric carry-scraper and a control method. The underground intelligent electric carry-scraper comprises an intelligent system, an electrical system, a hydraulic system, a frame assembly, a working device, a chassis transmission system, a cab, a cable drum and a fluid system. The frame assembly is arranged on the chassis transmission system, the working device is connected with the frame assembly, and the chassis transmission system is used for driving the frame assembly and the working device to move. The intelligent system, the electrical system, the hydraulic system, the cab, the cable drum and the fluid system are all arranged on the frame assembly. Wherein the intelligent system, the electrical system and the hydraulic system are used for controlling the underground intelligent electric carry-scraper; and a composite cable is arranged on the cable drum and is used for connecting the underground intelligent electric carry-scraper with power supply equipment and communication equipment on the ground. The intelligent system, the electrical system and the hydraulic system are used for controlling the underground intelligent electric carry-scraper, highly intelligent operation of the carry-scraper is achieved, and the labor intensity of workers is reduced.

The invention relates to the technical field of oil and gas well cementation engineering, in particular to a well cementation cement stone micro-crack self-repairing material and a preparation method and application thereof. The well cementation cement stone micro-crack self-repairing material is prepared from the following raw materials in parts by weight: 30 parts of deionized water, 3 to 12 parts of monomer, 0.03 to 0.09 part of cross-linking agent, 0.06 to 0.3 part of initiator, 3 to 20 parts of natural latex, 1.5 to 3 parts of surfactant and 0.03 to 1.5 parts of filler, and is prepared by adopting an emulsion copolymerization method. The obtained self-repairing material is high in liquid absorption rate in a weak acid solution, high in expansion rate when meeting carbon dioxide and excellent in mechanical property, can be doped into a well cementation fluid system, is used for two corrosive medium environments of supercritical CO2 and CO2 formation water in a water wet environment, seals a shaft leakage channel, and improves the sealing integrity of a shaft.