692 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 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.

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.

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.

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.

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.

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 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 discloses a method for testing dynamic granularity of a valve, and belongs to the technical field of ultra-pure fluid systems. According to the method, through components such as an air inlet pressure regulating valve, a pressure gauge, a high-pressure controller, a particle counter, a main channel and a test channel, accurate monitoring of dynamic particle pollution of the valve under the actual working condition is achieved; the method comprises the following steps: 1, ensuring that a particle counter works under stable sampling flow through a flow regulation compensation mechanism, and improving the accuracy of measured data; 2, static purging is carried out, initial particle pollution is effectively removed, and a clean basic environment is provided for dynamic testing; step 3, dynamically purging the tested piece by detecting the switching frequency, simulating the actual opening and closing process of the valve, and dynamically evaluating the cleanliness of the tested piece; according to the invention, the limitation of the traditional static test is overcome, the dynamic particle release characteristics of the valve are truly reflected, and a comprehensive and accurate particle size test result is provided for an ultra-pure fluid system.

The invention discloses a peritoneal dialysis system which comprises an abdominal cavity pipeline with the first end communicated with the abdominal cavity of a human body; the semi-permeable membrane assembly comprises a membrane, a first side and a second side, the first side and the second side are separated by the membrane, and the first side is communicated with the second end of the abdominal cavity pipeline so as to receive the abdominal cavity dialysate from the abdominal cavity pipeline and inject the abdominal cavity dialysate into the abdominal cavity of the human body; the external liquid path system comprises an external liquid pipeline communicated with the second side, and the external liquid pipeline comprises a waste liquid outlet for outputting dialysis waste liquid led out from the peritoneal dialysis liquid through the membrane; when the peritoneal dialysis solution is led out, the membrane allows moisture and small molecular solutes in the peritoneal dialysis solution to permeate into the second side and entraps a macromolecular penetrant on the first side so as to maintain the osmotic pressure of the peritoneal dialysis solution.

Embodiments herein relate to systems for detecting air bubbles in fluids. In an embodiment, a fluid system aeration detector is included having an optical air bubble sensor. The optical air bubble sensor can include a light source, a light detector, and a sensor controller. The sensor controller can be in signal communication with the light detector and can be configured to detect air bubbles based on the signals received from the light detector. The sensor controller can further be configured to estimate an amount of aeration of a fluid based on the detected air bubbles. Other embodiments are also included herein.

Valves for relieving pressure from high-pressure fluid systems have a valve fitting and a valve actuator. The pressure relief valve is normally shut and is adapted to open at a relief fluid pressure. It comprises a valve fitting and an actuator. The actuator has a valve stem, a spring, and an electromagnet. The stem is coupled to a valve body and mounted for linear reciprocation. The spring applies a mechanical force that biases the stem to place the valve in a normally shut state, but allows the valve to open at a first fluid pressure below the relief pressure. The electromagnet applies a magnetic force that, together with the mechanical force, holds the valve in an operationally shut state at a second fluid pressure above the relief pressure. The valve may be opened at fluid pressures above the first fluid pressure by de-energizing the electromagnet at the relief pressure.

The invention is suitable for the field of low-temperature gas ejection and fluid system optimization, and provides a Venturi ejector structure parameter optimization method of a nitrogen phase separator gas return pipeline for a large scientific device. According to the method, geometric variables such as a main nozzle angle, a throat diameter and a diffusion angle are subjected to parametric modeling, key performance indexes such as an ejection coefficient, ejected mass flow and temperature field uniformity are extracted based on computational fluid dynamics simulation, a multivariable response surface model is constructed, and global optimal solution search is performed through a genetic algorithm. In the system operation process, if flow field fluctuation exceeds a threshold value, parameter re-optimization can be triggered in real time, and self-adaptive adjustment of the structure is completed. The method has the advantages of being efficient in optimization, rapid in response, high in self-adaptive capacity and the like, is suitable for efficient injection and dynamic regulation and control scenes of low-temperature gas in a complex thermal system, and has wide engineering application prospects and popularization value.

A medical training model includes a base frame, a fluid system arranged on the frame and configured to simulate a blood circulation replacement system, and at least one additively manufactured individualized vessel model with a patient-specific replicated lumen. The vessel model may be interchangeably connectable to the fluid system by at least one hydraulic quick coupling having coupling pieces such as a plug and a sleeve or bushing. Each coupling piece may contain an inner flow channel, and at least one coupling piece is designed as an adapter with a diameter-changing flow channel course that transitions from the patient-specific lumen to a standardized coupling connection opening. The flow channel course may include a conical region providing a smooth, edgeless transition between differing diameters, with the conical region formed as a hollow shaft truncated cone for flat bearing and sealing when the coupling pieces are locked together.

Systems, methods, and apparatus for producing wellbore fluids using drill cuttings, geopolymers, and / or mine tailings, and compositions relating to the same are disclosed. The drill cuttings, geopolymers, and / or mine tailings may be used to create appropriate wellbore fluids to be used in wellbore fluid supply systems, such as spacer fluids, lead barrier fluids, tail barrier fluids. In one embodiment, the wellbore fluids result in one or more substantially impermeable barrier sheaths within the wellbore, which barrier sheaths may be cementitious or non-cementitious.

A method for operating a fluid system, which has a control device with a control functionality and a piezoelectric valve assembly that can be controlled by the control device. The method involves the following steps: providing a target working pressure at the working connection, measurement of the actual working pressure at the working connection by the pressure sensor, transmitting the measurement data to the control device and applying the algorithm to compare the actual working pressure with the target working pressure, activating the at least one integrator to integrate the control deviation of the control voltage (=offset voltage) after the actual working pressure is constant over a certain time period, and changing the control voltage as a function of the determined target / actual deviation taking into account the integrator operation.

A medical fluid system includes a medical fluid pump actuator; a medical fluid carrying set including a flexible sheet; a temperature sensor positioned and arranged to sense a temperature of the medical fluid flowing through the medical fluid carrying set; a pressure sensor positioned and arranged to contact the flexible sheet when the medical fluid carrying set is loaded for operation with the medical fluid pump actuator; and a control unit configured to (i) precondition the flexible sheet for operation with the pressure sensor by causing the medical fluid pump actuator to apply pressure to the flexible sheet and (ii) use an output from the temperature sensor in a compensation algorithm that modifies an output from the pressure sensor.

An automated method of washing a fluidic system 210 of an IVD analyzer 200 from a previous fluid is disclosed, the fluidic system 210 comprising at least one fluidic path 211, 213, 215. The method comprises controlling by a controller 250 a pump 240 and at least one fluid-selection valve 230 for pumping a wash fluid 221 and / or air 232 through the at least one fluidic path, wherein in a time-priority mode 10 the method comprises pumping at higher speed air, in a first step 11, in order to remove the previous fluid from the at least one fluidic path, and wash-fluid plugs alternated to air plugs, in a second step 12, in order to wash out residuals of the previous fluid, and wherein in a wash-fluid-priority mode 20 the controller 250 is configured to operate according to either a sample-wash mode 30 if the previous fluid is a sample 2 or according to an other-fluid-wash mode 40 if the previous fluid is any fluid other than a sample 2, wherein in the sample-wash mode 30 the method comprises pumping air at lower speed, in a first step 31, in order to remove the previous fluid from the at least one fluidic path, pumping at least one wash-fluid plug at higher speed, in a second step 32, and pumping wash-fluid plugs alternated to air plugs at lower speed, in a third step 33, in order to wash out residuals of the previous fluid, and wherein in the other-fluid-wash mode 40 the method comprises pumping air at lower speed, in a first step 41, in order to remove the previous fluid from the at least one fluidic path and pumping wash-fluid plugs alternated to air plugs at lower speed, in a second step 42, in order to wash out residuals of the previous fluid.

The application provides an oil-containing drilling cuttings reinjection fluid and a preparation method and application thereof, which contains, based on the total weight of water in the base fluid being 100%, 0.2-0.3wt% of a suspending agent, 0.15-0.25wt% of a low-viscosity polyanionic cellulose, 0-0.25wt% of sodium carboxymethyl cellulose, 0-0.2wt% of hectorite, 0-0.2wt% of a zwitterionic polymer, 20-25wt% of oil-containing drilling cuttings and the balance of the base fluid; in the oil-containing drilling cuttings reinjection fluid, the contents of the three components of sodium carboxymethyl cellulose, hectorite and the zwitterionic polymer are not simultaneously 0, and the total content of the treating agent is less than 1wt%. The application realizes the target of reducing the total amount of the treating agent through the complementary advantages of the performance of different treating agents, and on the basis of making the rheological performance, the suspension stability and the filtration loss performance of the oil-containing drilling cuttings reinjection fluid system meet the requirements, the high-temperature resistance and the pollution resistance of the oil-containing drilling cuttings reinjection fluid system are also improved.

The invention relates to the technical field of semiconductor precision machining, in particular to a precision temperature control system with a high-precision pressure stabilizing function, which comprises a circulating fluid system, the circulating fluid system comprises a liquid inlet pipeline connected with heat exchanger circulating fluid, a water tank is mounted at the tail end of a liquid outlet pipeline of a heat exchanger, and a water pump is arranged at the top of the water tank. The output end of the water pump is connected with a liquid outlet pipeline, and a third filter, a surge tank and a fourth pressure sensor are sequentially arranged on the liquid outlet pipeline in the fluid conveying direction. The pressure stabilizing tank is additionally arranged between the third filter and the fourth pressure sensor, the pressure stabilizing tank can effectively absorb pressure loss caused by the fact that fluid passes through the third filter, the system pressure fluctuation range is reduced to + / -20 mbar from original + / -30 mbar to + / -50 mbar, the pressure stability and control precision of system operation are remarkably improved, and the system pressure fluctuation range is reduced to + / -20 mbar from original + / -30 mbar to + / -50 mbar. The operation pressure of the circulating liquid outlet of the Chiller equipment is stabilized, and the pressure difference fluctuation of the circulating liquid is obviously reduced.