452 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.

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.

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 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 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.

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.

The utility model discloses a steam generator module, including shell, set up in shell be used for heating fluid heating system and be used for controlling fluid to enter and discharge heating system's fluid system, the heating system includes electric heating main part and sets up on electric heating main part electric heating pipe, be equipped with the chamber without partition in electric heating main part, the water inlet and water outlet that electric heating main part both ends are equipped with with chamber intercommunication, the position of between the water inlet and water outlet in the chamber is provided with filter system, the utility model discloses optimization internal structure and filter screen, improve the steam production efficiency, reach the purpose that both filter scale and do not block product channel simultaneously.

A method includes disposing a device into a borehole in proximity to a subterranean formation where a filter cake has been formed adjacent thereto, the device comprising a support structure and a shap

A device for intermittent monitoring of a biomolecule in a human body, and use thereof. The device includes a device casing, a microneedle array including an array of needles configured to extract interstitial fluid from a user, a microfluidic system defining a fluidic channel including a biomolecule debonding agent, wherein the fluidic channel is in fluidic communication with the microneedle array and configured to facilitate flow of the extracted interstitial fluid therethrough, and an assay system in fluidic communication with the microfluidic system. The assay system includes an affinity binding agent capable of generating an indication of a level of one or more biomolecules present in the extracted interstitial fluid. The microneedle array, the microfluidic system, and assay system are disposed within the device casing.

The application provides a multi-scale fluid-structure coupling coarse-grained simulation method, which is applied to CFD-DEM numerical calculation of a particle-fluid system. The coarse-grained simulation method not only equivalently regards fine particles in the particle-fluid system as coarse particle agglomerates, reduces the number of calculated particles and improves the calculation efficiency, but also provides quantitative coupling relations among fine particles, coarse particle agglomerates and fluid grids of three scales in order to characterize the non-uniform distribution characteristics of the internal particles of the coarse particle agglomerates and the flow field, and adopts a kernel function to establish mapping relations and momentum exchange models of physical quantities such as mass, velocity and force between the coarse particle agglomerates and the fine particles, and between the coarse particles and the fluid grids. Therefore, the coarse-grained simulation method provided by the application not only improves the calculation efficiency, but also guarantees the numerical calculation accuracy of CFD-DEM in the particle-fluid system.

The invention discloses a clean water carrying air suspension proppant fracturing method for a shallow bottom water reservoir. The clean water carrying air suspension proppant fracturing method comprises the following steps: preparing an air suspension proppant; optimizing an underground fluid system, and selecting clear water as prepad fluid, sand-carrying fluid and displacing fluid; according to the reservoir geologic characteristics and the oil-bearing property, in combination with software, the fracture expansion condition is simulated, the sand amount, the construction displacement, the sand ratio and the prepad fluid proportion parameters are optimized, a construction pump injection program is designed according to the optimized parameters, the fracturing construction process is determined, and a clear water gas suspension sand fracturing technical mode is formed. The surface of the quartz sand is modified, the fracturing propping agent which can generate a large number of bubbles on the surface when encountering water and is fully suspended or flocculent semi-suspended in water is obtained, the fracturing method that clear water carries the air suspension propping agent is adopted, on one hand, the net pressure in a crack can be reduced, the crack height can be controlled, bottom water channeling due to pressure is avoided, and the fracturing propping agent can be recycled; and on the other hand, the sanding profile can be improved to realize effective support of the middle-upper oil layer, so that benefit development of the shallow bottom water reservoir is realized.

Many conduit, piping and tubing systems comprise interconnected components. The connector assemblies comprises a main body, optionally at least one sealing member, at least one gripper assembly, and a locking mechanism. The piping joint assembly or connection assembly may be used in fluid flow systems, pressurized systems, and conduit systems, for example. Embodiments of the joint assemblies, connection assembly, and methods facilitate a simple connection, simple disconnect, repair and reuse of the joint assembly or components of the joint assembly.

The present invention relates to a control system (100) for at least one fluid system, in particular of a rail vehicle (200), wherein the control system (100) comprises at least one main control unit (105), a first backup control unit (106), a first electro-fluid unit (112), and a monitoring unit (108). The first backup control unit (106) is configured to transmit control signals so that the first electro-fluid unit (112) is controllable and / or adjustable, and wherein the first electro-fluid unit (112) is connected or connectable to a first fluid source (117) and a first fluid line (118) for supplying fluid along the first fluid line (118) as required. The present invention further relates to a fluid system and a vehicle.

A lifting system comprises a platform (10) with at least one inflatable body (21, 22) which is connected to a fluid conduit (23, 24) for the purpose of receiving an inflating fluid, particularly a gas under increased pressure such as compressed air. In a first aspect the at least one inflatable body (21, 22) is connected for rotation about a rotation axis (H) relative to the platform (10). The inflatable body (21, 22) bounds here a winding space (40) in which the fluid conduit, when not in use, is received in a state in which it is wound around the rotation axis. In a second aspect the lifting system comprises on or at the platform (10) a fluid system (51, 52) which is remotely controllable.

A cooling fluid comprising a coolant for immersion cooling an object therein, the object comprising a plasticized surface and a plasticizer dispersed in the coolant, the plasticizer being diffusible into the plasticized surface of the object when the object is in contact with the coolant, wherein a weight ratio of the plasticizer to the coolant in the cooling fluid is at least 0.005.

The invention relates to a method for preparing filtered coffee with a fully automatic coffee machine (100) comprising:-a brewing chamber (1), an upper piston (2), a lower piston (3) movable within said brewing chamber (1) wherein the brewing chamber and / or the upper piston are relatively movable between at least two different first and second closed positions, a first closed position and a second closed position configured for brewing roasted and ground coffee powder, where the first closed position is configured for compacting coffee during brewing, and the second closed position defines a maximum possible closing volume of the brewing chamber; -a water fluid system comprising at least a water supply source (101) and a water pump (102) wherein said system is connected to a water inlet (13) of the coffee extraction unit wherein the method comprises the steps of:-moving the chamber (1) and the upper piston (2) relative to each other into a second closed position defining a maximum possible closing volume of the brewing chamber,-moving the chamber (1) and the upper piston (2) relative to each other into a second closed position defining a maximum possible closing volume of the brewing chamber; and then supplying the pumped water in a pulsed manner.

The application relates to the field of agricultural planting cultivation technology and discloses a high-temperature-resistant and stress-resistant millet cultivation regulation method, which comprises the following steps: adding deionized water, boric acid and 1,2-propylene glycol into a reaction kettle, adding potassium hydroxide aqueous solution dropwise after heating and constant temperature to adjust pH value and react; cooling water is introduced to cool, calcium lignosulfonate is added to form a fluid system through high-shear dispersion; gamma-aminobutyric acid is added and stirred to obtain a high-temperature-resistant and stress-resistant foliar spraying composition product; the relative water content of soil is maintained before millet seeding to the jointing stage, and the composition product is diluted and uniformly sprayed on the millet leaves before continuous high temperature and low humidity drought weather predicted by the weather forecast. The boric acid is converted into an organic complex state, the water solubility and leaf absorption rate of the effective component are improved, the stomata are adjusted through gamma-aminobutyric acid, the calcium lignosulfonate is used to form a film on the leaves, and the damages caused by high temperature and drought to the plants are synergistically relieved.

The application discloses a kind of permeable crystalline concrete protective fluid systems with anticarbonization, anticorrosion function and preparation method and application thereof.The protective fluid system includes permeable crystalline inorganic nano concrete protective fluid, reinforcing colorant and organic-inorganic composite resin varnish.The protective fluid system is used to protect concrete structure, including the following steps: first, using permeable crystalline inorganic nano concrete protective fluid to coat the surface of concrete structure, curing to solidification, then using reinforcing colorant to coat, curing to solidification, finally using organic-inorganic composite resin varnish to coat, curing to solidification.The protective fluid system is used for concrete structure protection, not only has excellent waterproof, anticarbonization, weathering resistance, acid and alkali erosion resistance and other advantages, coloring layer and sealing layer can adapt to different decoration needs, while improving surface hardness and weather resistance, three-layer composite structure provides structure, vision, threefold protection of beauty, better than existing single function material.

The invention discloses a flow characteristic prediction method for a pump-driven two-phase fluid heat dissipation system. Relates to the field of spaceflight, in particular to a pump-driven two-phase fluid heat dissipation system flow characteristic prediction method. The dynamic characteristics of a working medium in the operation process of the two-line fluid heat dissipation system of the spacecraft are calculated, the system working state point of the two-phase system is calculated, the matching property of the driving pump and the pump-driven two-phase fluid heat dissipation system is verified before the system is built, and the flow characteristics of the pump-driven two-phase fluid heat dissipation system are predicted. The method comprises the following steps that the working medium flow in a two-phase state is estimated; drawing a system single-phase flow-flow resistance characteristic curve; calculating a two-phase limit working point of the system; selecting a model of a driving pump; drawing and evaluating the matching between the driving pump and the fluid system; according to the method, the flow characteristics of the two-phase system and the working characteristics of the driving pump are speculated in the modes of testing, calculation and the like, the actual working state point of the driving pump is predicted, the matching performance of the driving pump and the fluid system is verified in a mapping mode, and design blind spots are reduced.

To provide a cover unit which covers a high temperature part related to a fluid system and can release an atmosphere around the high temperature part and prevent entry of foreign objects.SOLUTION: A cover unit 17 includes: a first cover 36 for covering a member 26 forming a fluid system 23a; and a second cover 38 which covers a valve body 16 connected to the fluid system 23a and forms an opening 40 between itself and the first cover 36. A portion 36b, which forms the opening 40 between the first cover 36 and the second cover 38, of the first cover 36 extends to an internal space S2 of a portion, which covers the valve body 16, of the second cover 38.SELECTED DRAWING: Figure 2