201 results about "Fluid coupling" patented technology

The invention provides a dry-type transformer turn-to-turn short circuit multi-physical field simulation analysis method considering insulation aging and harmonic influence, and relates to the technical field of simulation analysis, and the method comprises the following steps: constructing a physical simulation model of a to-be-tested dry-type transformer; setting physical parameters and multi-physical field operation conditions of the physical simulation model; calculating a corresponding physical field operation calculation result under each physical field operation condition; performing post-processing on the physical field operation calculation result; by establishing a detailed simulation model and accurately assigning physical property parameters of each component, physical property changes of the turn-to-turn insulating material at different aging stages and under different temperature and frequency conditions are emphatically considered; turn-to-turn short circuit fault modeling is further introduced, magnetic-thermal-flow coupling simulation calculation is carried out under multi-harmonic excitation, the multi-physical field distribution characteristics of the dry-type transformer during different turn-to-turn short circuit faults are explored, and a reliable basis is provided for design optimization and safety evaluation.

The invention discloses a laser cladding preparation method for improving the wear resistance of a cladding layer by doping tungsten carbide. According to the method, cladding process parameters are preliminarily obtained based on finite element heat flow analogue simulation, cladding layer preparation is carried out, cladding quality characterization is carried out to obtain the optimal cladding process parameters, and finally the cladding layer with the wear-resistant characteristic is obtained. The method comprises the following steps: firstly, constructing a heat flow coupling three-dimensional model, carrying out grid division, establishing a heat source model, defining thermophysical parameters of tungsten carbide (10-15%) nickel alloy composite powder and a matrix, and determining simulated boundary conditions; setting a multi-factor process parameter combination to carry out numerical simulation calculation, and determining laser processing process parameters of laser power, scanning speed and light spot diameter; preparing a cladding layer on the surface of the nodular cast iron by using tungsten carbide (10-15%) nickel alloy composite powder through a laser cladding method; and carrying out microscopic morphology and microhardness experiments to carry out quality analysis verification on the cladding layer, determining the optimal process parameters of laser power, scanning speed and light spot diameter when the cladding layer has no obvious defect morphology and the hardness is higher than that of the raw material, and obtaining the laser cladding preparation method for improving the wear resistance of the cladding layer by doping tungsten carbide. The invention provides a new research method and a high-quality preparation approach for improving the wear resistance of the cladding layer by tungsten carbide, and can be widely applied to the fields of strengthening and repairing mining machinery, aerospace parts and the like.

A pair of fluid couplings for liquid cooling electronic devices comprises a first fluid coupling and second fluid coupling. The first fluid coupling comprises a female coupling interface and the second fluid coupling comprises a male coupling interface to couple with the female coupling interface. Each of the fluid couplings comprises a magnetic latch assembly coupled to the coupling interface thereof. Each magnetic latch assembly comprises a shell, magnets housed within the shell, and a group of ramp-and-hook latches coupled to the shell. The magnets cause the magnetic latch assemblies to magnetically attract one another during coupling, reducing the force a user may need to apply to complete the coupling. The ramp-and-hook latches of one magnetic latch assembly are complementary to the ramp-and-hook latches of the other magnetic latch assembly, and they are arranged to engage with one another and interlock when the first and second fluid couplings are coupled.

A fluid coupling may include a valve housing defining an internal fluid passage extending along a longitudinal axis between a first end and a second end of the valve housing; a valve member including a central longitudinal bore and disposed within the valve housing, the valve member operable between an open position and a closed position to permit and block fluid flow through the internal fluid passage, respectively; a handle assembly operably connected to the valve member, the handle assembly being movable between a first position in which the valve member is in a closed position and a second position in which the valve member is in an open position; an interface member secured to the valve housing, the interface member including at least one engagement feature for coupling the fluid coupler with a similarly shaped engagement feature of a second fluid coupler.

Fluid handling couplings can include a main body with a front face and defining a longitudinal axis. Fluid handling couplings can include a post extending parallel to the longitudinal axis, and a post receptacle. Fluid handling couplings can include a seal coupled to the main body around the longitudinal axis. A portion of the seal can protrude from the front face of the main body. Fluid handling couplings can include a removable membrane releasably attached to the front face of the main body and covering the portion of the seal protruding from the front face of the main body. Fluid handling couplings can be genderless, can include manually openable valves, and can be configured for single-use aseptic fluid handling usage.

Some fluid coupling devices described herein are configured as non-spill fluid couplings. In addition, some embodiments described in this document relate to fluid coupling devices that are constructed modularly, and to modules that can be universally incorporated into the construction of multiple different types of fluid couplings. Further, fluid handling component coupling members are described.

This document describes fluid coupling devices for fluid handling systems. For example, this document describes male and female couplings that can be snapped together, and that are disconnectable by manually compressing an ovular collar of the female coupling. Some fluid coupling devices described herein are well suited for use in systems that provide liquid cooling for heat generating devices such as batteries, power sources, electronics, computer hardware and the like. Moreover, the fluid coupling devices described herein are also suitable for many other fluid coupling uses.

Fluid couplings can be designed to prevent spillage of fluid when disconnecting the couplings after use. In some embodiments, the fluid couplings include internal valve components but no springs, or no springs in the fluid flow path. In some embodiments, the internal valve components of a male coupling and a female coupling can be designed to latch together in an abutted arrangement.

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.

A fluid coupling may include a receiving element, a securing element, a retaining element and a plug-in element. The securing element may be displaceable between a release position and a locking position. The securing element being may be engaged with the retaining element in the release position of the securing element. The plug-in element may allow the securing element to be displaced. The fluid coupling may include a spring element which exerts a spring force on the securing element so that the securing element is preloaded in the direction of the locking position so that, when the plug-in element is inserted into the receiving space of the receiving element, the securing element is displaced out of the release position into the locking position due to the spring force of the spring element.

The invention relates to the technical field of fluid mechanics data processing, in particular to a construction method of a fluid mechanics simulation model applied to a fan. The method comprises the following steps: acquiring fan drawing information; the geometric structure of the fan drawing information is recognized, wherein the geometric structure comprises an air inlet and outlet, an air guide cover, an air guide direction rotating shaft and an air bag connector; judging the structural shape of the fan according to the air inlet / outlet and the air guide direction rotating shaft to obtain structural shape data; performing fan structure corresponding position identification on the wind scooper and the wind bag connector to generate structure position data; and constructing a fan structure model based on the structure shape data and the structure position data. Through the data processing technology and the analogue simulation technology, the fan fluid mechanics simulation model is constructed according to the fan application scene information, so that heat flow coupling vibration simulation and turbulent vortex separation phenomenon simulation of the fan are realized, and the accuracy and efficiency of fan simulation are higher.

The invention belongs to the technical field of power equipment insulation structure design, and discloses a power equipment heat flow coupling field rapid calculation method and a related device. Processing unknown working conditions by using the trained KAN neural network agent model to obtain feature coefficients corresponding to the unknown working conditions; calculating to obtain a power equipment heat flow coupling field corresponding to an unknown working condition by using the calculated orthogonal basis vector and the characteristic coefficient corresponding to the unknown working condition; the orthogonal basis vector calculation process comprises the following steps: establishing a power equipment heat flow coupling field simulation model, and calculating to obtain simulation results corresponding to different working conditions; constructing a sample set through a simulation result; performing eigenorthogonal decomposition on the sample set to obtain feature coefficients and orthogonal basis vectors of the corresponding sample set under different working conditions; according to the method, rapid calculation of the heat flow coupling field of the power equipment can be met, and the accuracy of a calculation result can be ensured while the calculation efficiency is improved.

The invention discloses a precise liquid feeding structure control method applied to a single-phase immersion liquid cooling data center box body, which comprises the following steps: step 1, data acquisition and modeling: acquiring parameters by using a sensor, and simulating a cooling liquid flow path and temperature field distribution through thermal analysis; 2, simulation analysis and problem positioning are carried out, the flow velocity, flow distribution and temperature field of cooling liquid under different loads are simulated, and an unsmooth flow area, a hot spot area and a high-energy-consumption node are positioned; 3, hardware deployment and debugging: adjusting the installation position of a mainboard water pump to optimize the initial axial direction of a cooling liquid, simulating different server loads, and comparing test data with a simulation result to perform fine tuning optimization; 4, dynamically controlling the flow, executing multi-mode control logic based on the temperature parameters, and dynamically adjusting the rotating speed of a main board water pump and the rotating speed of a circulating pump; cooling liquid is forced to flow through the mainboard water pump, flow distribution is optimized in combination with the heat-flow coupling model, and forced flowing of the cooling liquid is achieved.

The invention discloses a surface texturing bearing lean oil state lubricating oil distribution prediction method and system, and relates to the field of cylindrical roller bearing surface texturing, and the method comprises the steps: extracting a fluid domain from 1 / n of a simplified geometric model; the fluid domain is subjected to unstructured grid division and then imported into FLUENT software, a lubricating oil density cloud picture and a speed vector diagram in a lean oil state are obtained through the software, and then the oil flow density and the speed distribution condition of an inner raceway contact area of the cylindrical roller bearing containing the surface texture are obtained; and utilizing finite element software to perform fluid-solid coupling on the fluid domain subjected to unstructured mesh division and 1 / n of the simplified geometric model to obtain the oil film thickness of the surface texture, and further obtaining the oil film thickness distribution condition of the surface texture. According to the method, the oil flow density distribution and speed distribution condition of the inner raceway contact area of the cylindrical roller bearing containing the surface texture can be predicted, and the oil film thickness distribution condition of the surface texture can be predicted.

The application discloses a water pump group fault early warning method and system based on an Internet of Things sensor, belongs to the technical field of water pump fault early warning, and specifically comprises the following steps: collecting sensing data of all water pump devices through sensing devices arranged at key positions of the water pump group; dividing independent pipe sections based on a pipe network topological structure and calculating fluid coupling strength coefficients of the pipe sections through the sensing data; generating an environment adaptive matching degree by combining a vibration main frequency of a target device with a basic frequency matching degree of pipe pressure pulsation main frequency and the coupling coefficient; if the environment adaptive matching degree is greater than or equal to a preset matching degree threshold, distinguishing between body abnormalities and conduction resonance by performing a rotating speed deviation test; if it is conduction resonance, maintaining flow stability by cooperative speed regulation of devices on the shortest conveying path; and if it is a body abnormality, issuing a fault early warning. The application realizes accurate fault early warning and risk mitigation by considering the coupling relationship between water pump devices.

This document describes fluid coupling devices for fluid handling systems. For example, some embodiments described in this document relate to fluid coupling devices that snap together, and are then secured to each other using a collar and collet mechanism. Some fluid coupling devices described herein are well suited for use in systems that provide fluid cooling for heat generating devices such as computer hardware. The fluid coupling devices described herein are also suitable for many other uses.

The invention relates to the technical field of engineering machinery, in particular to an electric cabinet cracking fault diagnosis method, device and equipment and engineering machine.The method comprises the steps that a fluid CFD simulation model corresponding to a cooling water channel in an electric cabinet is built; according to the fluid CFD simulation model, fluid pressure information corresponding to the wall face of the cooling water channel is obtained; based on a finite element FEM technology, establishing an electric cabinet structure simulation model with geometric features corresponding to the welding root notch at the welding root position; coupling the fluid pressure information corresponding to the wall surface of the cooling water channel to the wall surface of a fluid domain cavity corresponding to the electric cabinet structure simulation model to obtain a structure fluid coupling analysis model; and performing deduction calculation on stress information corresponding to the weld root notch in the structural fluid coupling analysis model based on the weld fatigue curve so as to diagnose the cracking fault of the weld root position. According to the invention, accurate diagnosis of the welding root cracking fault of the electric control box can be realized, and a reliable basis is provided for identifying the fault hidden danger of the electric control box in advance.

The invention relates to a fluid coupling arrangement 1 for sealingly connecting a hose 40 to a pressurized fluid line 50, such as a drinking water line. It is provided with at least one open elastic ring 10 for supporting the hose 40, the outer diameter of which corresponds to the inner diameter of the hose 40. It further comprises a coupling part 20, which includes a ring of inwardly chamfered, spring-elastic tongues 21 and a clamping element 22, which interacts with the ring of spring-elastic tongues 21 and is suitable for clamping the hose 40 between the tongues 21 and the open ring 10. It also includes a rubber-elastic, fluid-tight hose element 30, which is suitable and designed to enclose one end of the hose 40 to be connected in a U-shaped and ring-shaped manner, thus sealing it. This fluid coupling arrangement 1 proves to be very robust, seals very well and is advantageous in handling.

The present application relates to the technical field of marine engineering geology research, and particularly relates to a deep-sea cold spring system methane gas release simulation device and method based on PIV. The device comprises a stable pressure gas supply module, a simulation reaction module, a control collection module and a visual and PIV synchronous observation module. The stable pressure gas supply module comprises a bubble generation reaction kettle and a membrane gas-liquid pressure stabilizing device, and the membrane gas-liquid pressure stabilizing device is connected in parallel on the gas supply pipeline connecting the bubble generation reaction kettle and the simulation reaction module. The simulation reaction module comprises a flexible airbag valve system and a cold spring environment reaction cabin system, and the flexible airbag valve system is located at the air inlet of the cold spring environment reaction cabin system. The control collection module is used for controlling the bubble generation and directional release, and the visual and PIV synchronous observation module is located outside the cold spring environment reaction cabin system. The device can synchronously obtain the flow field structure, hydrate generation process, and inversion vorticity, shear rate, turbulence statistics, pressure field and acceleration, and provide a reliable experimental platform for revealing the bubble-hydrate-fluid coupling mechanism in the cold spring environment.

This invention relates to the field of ultra-precision polishing technology, specifically to an ultrasonic cavitation microjet polishing module for polishing microstructures. The module includes an acoustic focusing nozzle, a center-penetrating piezoelectric transducer, an adaptive acoustic impedance frequency tracking system, and a liquid supply and bubble nucleation system. The acoustic focusing nozzle employs a variable cross-section acoustic amplitude rod structure, ensuring that the standing wave antinodes and nozzle outlet are confocal, thus increasing energy density. The piezoelectric transducer has a ring structure with fluid flowing through its center, achieving efficient energy conversion. The frequency tracking system adjusts the excitation frequency in real time to maintain resonance. The liquid supply system introduces cavitation nuclei through a venturi tube, reducing the cavitation threshold. This invention, through an acoustic-fluid coupling mechanism, utilizes the dual effects of macroscopic kinetic energy removal and microscopic cavitation removal to solve the problems of traditional polishing techniques, such as difficulty in processing high aspect ratio microstructures, incomplete bottom polishing, and low efficiency. It achieves high-precision polishing of microstructure surfaces, and is particularly suitable for ultra-precision machining of deep and narrow grooves.

Fluid coupling devices can be used in fluid handling systems. Some fluid couplings include multiple rigid components, two fluid seal members, and a seal spacer that is mechanically captured and / or clamped between rigid components of the fluid coupling. Such seal spacers can be used to separate the two fluid seal members and to position the fluid seal members in desired operational positions.

A 3-way fluid coupling for an information processing device having a primary liquid cooling loop and an expansion space. When no expansion device is present, the coupling directs liquid down a bypass path of the primarily loop. When an expansion device is present in the expansion space, the coupling directs liquid to flow through an expansion liquid cooling loop of the expansion device while substantially blocking liquid from flowing through the bypass path. The 3-way fluid coupling has a body and a poppet in the body. The poppet moves between a first position, in which first and second ports of the body are open while a third port is closed, thus directing liquid along the bypass path, and a second position in which the first and third ports are open and the second port is blocked, thus directing liquid to the expansion loop and substantially blocking the bypass path.

The invention discloses an underwater robot depth and course control system, which relates to the technical field of underwater robots, and is characterized in that an equivalent strain energy anomaly index and a local maximum principal stress anomaly index are extracted through a structure-heat-fluid coupled three-dimensional finite element simulation model, and a failure risk prediction model is constructed by using a machine learning model; taking the comprehensive feature vector as input, and outputting a sealing structure failure prediction coefficient as a basis for dynamically adjusting a control strategy; the system limits or optimizes the propeller power, buoyancy adjusting frequency and course angle change rate in real time according to the failure prediction coefficient of the sealing structure so as to reduce the structural load and delay the fatigue process, a prediction model is continuously optimized through an error sample driven incremental learning mode, closed-loop self-learning and self-adaptive evolution of the control system are achieved, and the system reliability is improved. Therefore, the operation safety and the task execution stability of the underwater robot in the complex deep sea environment are improved.

A pump system may include a fluid pump including a fluid end. The fluid end may include a plunger configured for reciprocating movement, a suction valve biased to a closed position and configured to open during suction cycles of the fluid pump, and a discharge valve biased to a closed position and configured to open during discharge cycles of the fluid pump.The fluid pump may include a power end configured to drive reciprocating movement of the plunger. The pump system may be configured to variably control a torque requirement of the fluid pump. The pump system may include a reciprocating engine to produce torque to drive the power end of the fluid pump. The pump system may include a fixed-ratio gearbox or a dual-ratio gearbox operably coupling the power end of the fluid pump to the reciprocating engine using a non-fluid coupling.

The utility model belongs to the technical field of liquid coupler disassembly, and particularly relates to a device for quickly disassembling a liquid coupler, which comprises a sliding rod, a limiting plate is fixedly arranged at the front end of the sliding rod, a connecting column is in threaded connection with the tail end of the sliding rod, and the connecting column is in threaded connection with the liquid coupler. A balancing weight is arranged on the sliding rod in a sliding mode, two handles are symmetrically arranged on the balancing weight, traction ropes are fixedly connected to the handles, and the traction ropes are manually pulled to drive the balancing weight to slide on the sliding rod. When the hydraulic coupler dismounting device is used, the sliding rod is connected with the hydraulic coupler through the connecting column, then the counterweight block is pulled through the pulling rope to impact the limiting plate, and the sliding rod drags the hydraulic coupler out little by little under the action of inertia, so that the dismounting speed of the hydraulic coupler is increased, and the risks of breakage and deformation of the lead screw are completely eradicated.

Some fluid coupling devices described herein are configured for use in fluid systems for purposes of providing a single-use, aseptic disconnection functionality that substantially prevents fluid spillage when being disconnected. In some embodiments, the coupling portions cannot be functionally reconnected to each other after being disconnected from each other. Some fluid coupling device embodiments described herein include a fluid flow path that is a metallic-free. Moreover, some embodiments of the fluid coupling devices provided herein include no metal whatsoever. That is, the fluid coupling devices are entirely metal-free.

A coupling assembly for a blind mate fluid coupling includes a housing unit with a through channel extending axially and a first recessed portion at a first end. A slide plate is disposed in the first recessed portion and movable in a first radial direction perpendicular to the axial direction, the slide plate having an opening. A slide base has a flat portion and a sleeve portion extending through the opening of the slide plate. The slide base is movable in a second radial direction perpendicular to both the axial direction and the first radial direction. The sleeve portion includes a tapered channel with a gradually narrowing diameter towards the flat portion. An inlet valve is at least partially disposed in the tapered channel and is movable in the axial direction and angularly pivotable within the tapered channel. This two-stage floating mechanism could accommodate radial, axial, and angular misalignment during blind mate coupling operations.

The invention relates to the technical field of numerical control machining, and particularly discloses a cutting precision optimization method and system for a four-axis linkage lathe, and the method comprises the steps: constructing a viscosity-temperature distribution field matrix, extracting a gradient vector, judging the stability of a cutting fluid, judging a heat flow coupling effect if the viscosity-temperature distribution field matrix is not stable, and determining a coupling monitoring period; establishing a transfer function of viscosity and cutting force, and constructing a cutting force instability point set; mapping the instability point set to a two-dimensional manifold, calculating a boundary point manifold curvature, and determining that manifold wrinkles exist; and constructing a mapping model of cutting parameters, and outputting parameter offset to realize precision closed-loop control. The system comprises a coupling analysis module, a period extraction module, an instability extraction module, a closed loop verification module and a precision adjustment module, the problem of cutting force instability caused by viscosity-temperature coupling is relieved through physical field data coupling analysis and dynamic compensation, and the method is suitable for complex curved surface machining.

An electric cable assembly is provided. The electric cable assembly includes an electric cable and a connector. The connector includes an interface portion and a pivotable member. The interface portion includes an electrical interface and a fluid coupling. The pivotable member includes an arm that is configured to be engageable with the fluid coupling of the interface portion. The fluid coupling is configured to be removable from the fluid socket of the electric device or the charging station when the arm of the pivotable member is engaged with the fluid coupling.

The application discloses a reaction flow and solid fluid coupling calculation method, equipment and medium, relates to the fluid coupling calculation technical field, and the method comprises the following steps: performing an estimation process and a correction process in a current time step of a current time cycle; comparing the difference between the result obtained in the last time step and the result obtained in the current time step; in the case of being less than a preset tolerance, entering the next time cycle until the number of time cycles reaches a preset number, and outputting the fluid coupling result; in the case of being greater than or equal to the preset tolerance, entering the next time step until it is determined that each difference is less than the preset tolerance. The application is used to solve the problem that the change of the solid is not considered when the fluid coupling is carried out in the prior art, resulting in low accuracy of the result obtained when the fluid coupling is calculated, and realizes accurate calculation of the fluid coupling by combining the mechanical interaction, thermal interaction and chemical reaction of the reaction flow and the solid.