32 results about "Fluid coupling" patented technology

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.

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 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.

The present invention relates to the technical field of fluid coupling maintenance equipment. Disclosed is a puller for fluid coupling maintenance, comprising a hydraulic cylinder and a connecting sleeve. A screw rod is threadedly mounted inside the hydraulic cylinder. The connecting sleeve is sleeved on the outside of the screw rod. A threaded sleeve is provided inside the connecting sleeve. The threaded sleeve extends outwards from an end portion of the connecting sleeve away from the hydraulic cylinder, and the threaded sleeve is detachably connected to the connecting sleeve. An end portion of the screw rod proximal to the connecting sleeve is movably inserted into the threaded sleeve. An ejector rod having an adjustable length is disposed on the end portion of the screw rod inserted into the threaded sleeve. The ejector rod is arranged to extend out of the threaded sleeve. In the present invention, the connecting sleeve and the threaded sleeve are detachably connected, such that the threaded sleeve can be easily replaced when threads on the threaded sleeve are damaged. The screw rod is provided with an ejector rod having an adjustable length, so as to adapt to disassembly of different models of fluid couplings. The invention provides the advantages of reduced usage costs, ease of use, and improved disassembly efficiency.

This invention provides a variable damping magnetohydrodynamic coupler for marine generator sets and its control method, comprising a housing, an input shaft, an output shaft, an excitation assembly, a control unit, a piezoelectric element assembly, and an auxiliary sensing assembly. A damping cavity is provided within the housing. The excitation assembly includes a magnetorheological fluid, an excitation coil, and a magnetic ring. The magnetorheological fluid fills the damping cavity, and the excitation coil adjusts the magnetic field of the magnetic ring through the excitation current to control the damping torque of the magnetorheological fluid. Based on the controllable viscosity of the magnetorheological fluid, the damping torque can be continuously adjusted over a wide range of 50~500 Nm by adjusting the excitation current to change the magnetic field strength, dynamically adapting to complex operating conditions such as shipboard turbulence and sudden load changes. Combined with the micro-compensation function of the piezoelectric element assembly, the coaxiality accuracy of the shaft system is improved to ±0.002 mm, and the resonance risk caused by over-compensation under high-speed conditions is avoided through a speed correction coefficient.

This disclosure provides a heat-fluid coupling analysis method, apparatus, and electronic device. The disclosure acquires the heat flow between air and an aerospace component; the heat flow indicates the amount and direction of heat transferred between the air and the aerospace component per unit time; the heat flow is input into an air calculation module to obtain the temperature rise data of the aerospace component along the flow path; the air calculation module determines the temperature rise based on energy conservation; the temperature rise data along the flow path indicates the temperature change data during heat exchange between the air and the aerospace component; based on the heat flow and the temperature rise data along the flow path, a heat-fluid coupling analysis result is generated; the heat-fluid coupling analysis result includes at least: heat flow number, temperature rise data number, preset temperature threshold, heat flow, and temperature rise data along the flow path; the heat-fluid coupling analysis result is presented. In summary, the technical solution provided by this disclosure can improve the accuracy and efficiency of heat-fluid coupling analysis and can adapt to various application scenarios.

This application relates to a micro-cooling efficiency enhancement structure and design method for the internal cavity of blades suitable for additive manufacturing. It includes: a micro-turbulence column array, composed of multiple integrally formed columnar turbulence units, each with a diameter of 0.3 mm to 2.0 mm, which can be arranged individually or stacked; at least one guide rib, integrally set in the airflow deflection zone within the cooling cavity, with a cross-section of square, elliptical, teardrop, airfoil, or tapered; the micro-turbulence column array is positioned downstream of the guide rib along the cooling airflow direction. Hotspot regions are identified through thermal-fluid coupling simulation. With the goal of maximizing heat transfer intensity and minimizing pressure loss, topology optimization is performed on the layout parameters of the micro-turbulence column array and the profile parameters of the guide rib to achieve an optimized balance and determine the final structural parameters. This solves the problems of insufficient heat transfer and excessive pressure loss in the high-temperature region of the blade trailing edge caused by the inability of traditional casting processes to form complex sub-millimeter-scale internal cavity structures.

A fluid coupling device (1, 1', 1'', 1''', 1'''') comprising a male coupling (50, 50'') and a female coupling (10, 10', 10'', 10''', 10' ''), the female coupling comprising: - a valve assembly (20) comprising a valve body (21) inside which a valve seat (26) is provided and a valve (25) mounted in the valve body so as to be movable between an open position in which the valve is disengaged from the valve seat and a closed position in which the valve is in sealing contact with the valve seat; - a connection body (30, 30', 30'', 30''', 30' '') for connecting the female coupling to a fluid conveying pipe, said connection body being mounted on a first end portion (21.1) of the valve body; and - a receiving body (40, 40' '') for receiving the male coupling into the female coupling, said receiving body being mounted on a second end portion (21.2) of the valve body, said first and second end portions comprising first means (21.5, 23) for fastening the connection body to the valve body and second means (21.7) for fastening the receiving body to the valve body, respectively.

A kind of frequency conversion control system of external oil pump group of fluid coupling, including, fluid coupling, working oil tank, external oil pump, control circuit, detachable connection between each component;External oil pump outlet is connected fluid coupling by oil outlet pipe, provides the lubricating oil of fluid coupling;The lubricating oil flowing out in fluid coupling is accessed working oil tank by oil return pipe;Working oil tank is connected with the import of external oil pump by oil inlet pipe;Control circuit acquires oil pressure and uses frequency conversion drive output drive oil pump, adjusts its working frequency and output pressure;High reliability, maintenance is convenient, strong compatibility, safety is promoted, avoid the damage of equipment caused by lubricating oil interruption.

A service brake control system for a combination vehicle that includes a towing member and first and second towed members includes an electro-pneumatic brake control valve in the first towed member that supplies fluid pressure through a supply port in response to an electronic control signal that is generated by a brake controller in the towing member.A dual check valve includes a first fluid supply port in communication with a forward fluid coupling on the first towed member that supplies a first fluid control signal from the towing member, a second fluid supply port in communication with the supply port of the electro-pneumatic brake control valve, and a fluid supply port in communication with a rear fluid coupling on the first towed member that supplies a second fluid control signal from the dual check valve to the second towed member.

A drive device improves the regeneration efficiency of a rotary electric machine. The drive device (100) includes a fluid coupling (2), a transmission shaft (4), and a rotary electric machine (3). The fluid coupling (2) includes a cover (21), a turbine (22), and an impeller (23). The turbine (22) is fixed to the cover (21). The impeller (23) is disposed in an outer shell formed by the cover (21) and the turbine (22). The impeller (23) is disposed opposite the turbine (22). The transmission shaft (4) extends through the outer shell of the fluid coupling (2). The transmission shaft (4) is connected to the impeller (23). The rotary electric machine (3) includes a first stator (31) and a rotor (32). The first stator (31) is disposed so as not to rotate. The rotor (32) is mounted to the outer shell of the fluid coupling (2).

Fluid couplings described herein are designed be assembled efficiently and economically. In example embodiments, the fluid couplings are designed with minimal component parts so that the fluid couplings are additionally economical to produce. In some embodiments, the fluid couplings described herein include internal valve components. Some such fluid couplings are designed to prevent spillage of fluid when connecting and disconnecting the couplings.

This invention provides a method for predicting the production capacity of electrically heated cold-drive heavy oil reservoirs using wellbore coupling, belonging to the field of oil and gas field development engineering technology. The method includes acquiring basic reservoir parameters and electrical heating parameters; solving for the reservoir temperature distribution at the current time step based on energy conservation; dividing isothermal zones into different temperature zones based on temperature; tracking the cold-drive front position using the Buckley-Leverett method to determine the friction saturation and production end saturation, and calculating the heavy oil production; combining the injection well pressure and friction saturation, solving for the injection-production pressure difference based on Darcy's law to obtain the bottomhole flowing pressure of the production well; inputting the bottomhole flowing pressure and temperature into the wellbore pressure drop model to calculate the wellbore pressure profile and temperature profile; iteratively updating until the end of the production cycle, and outputting the production capacity prediction result. This invention solves the problems of inaccurate predictions caused by existing models' single scenario, neglect of thermal-fluid coupling, and lack of wellbore coupling, and can accurately predict the production capacity of electrically heated assisted cold-drive heavy oil reservoirs.

The present invention is to a dripless fluid coupling device (a dripless connector) that can be used to driplessly connect and disconnect devices or assemblies to and from each other in a sterile manner. The dripless fluid coupling device of the present invention is easy to manufacture using known materials and methods; easy to use, requiring only a clamping device to connect and disconnect; sterilizable and relatively inexpensive compared to available prior art devices.

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 and fluid coupling systems that are constructed in a compact configuration.

The utility model discloses a coupling assembly, be suitable for one blind insertion formula fluid coupling, and contain a casing, a sliding base and an import valve. Sliding base sets up in the casing, and has an inner passage. The inner passage contains a first department and a second department. The first department is connected with the second department at a middle section opening. The inner passage extends along an axial direction. The diameter of the second department is greater than the diameter of the first department. The sliding base can move relative to the casing along a radial direction perpendicular to the axial direction. The import valve is at least partially arranged in the inner passage. The import valve can move along the axial direction in the inner passage and can be angularly pivoted in the first department.

A fluid coupling (140) for transmitting an electric current through a swivel joint is disclosed. The fluid coupling comprises: a housing (124) comprising an outer conductor (148) and an outer insulator (146) arranged between the housing (124) and the outer conductor (148); a shaft (122) comprising an inner conductor (144) and an inner insulator (142) arranged between the shaft (122) and the inner conductor (142); a first seal (160) arranged between the housing (124) and the shaft (122); a second seal (162) arranged between the housing (124) and the shaft (122); a first electrical wire (170) connected to the outer conductor (148); and a second electrical wire (172) connected to the inner conductor (144). a third electrical wire (174) which is connected to the housing (124);a chamber (150) defined at least partially by the inner and outer conductors (144, 148) and the first and second seals (160, 162); and an electrically conductive fluid (152) within the chamber (150) forming an electrical connection between the inner and outer conductors (144, 148).

The utility model relates to a tank cleaner and nozzle device, the former is used for cleaning tank, its especially track type cleaner, including the static body that is constituted with the supply line of receiving cleaning fluid coupling, the rotating body that rotates around the main rotation axis and is installed on the static body, the nozzle carrier that rotates around the secondary rotation axis different from the main rotation axis, the nozzle carrier has the housing part that is installed to the rotating body and is in fluid intercommunication with the supply line of receiving cleaning fluid, a plurality of nozzle devices and the corresponding number of fixing members that each is constituted to fix corresponding one in the nozzle device to the housing part, wherein each nozzle device has the nozzle insert with the discharge orifice of dispensing cleaning fluid and the flow guide portion that guides cleaning fluid from the housing part to the discharge orifice. The utility model shows that the nozzle insert is at least partially releasably received in the fixing member and / or housing part, wherein the fixing member is constituted to detachably engage with the housing part.

This invention relates to the field of data processing technology and discloses a closed-loop control method for a joint motor with multi-error coupling. The method includes: acquiring multi-dimensional heterogeneous data within the joint and aligning it in the time domain to construct a system state observation vector; executing an energy integration algorithm based on the vector to calculate the liquefaction rate parameter reflecting the physical state of the phase change material; calculating the dynamic viscosity of the lubricating oil using temperature data and constructing a thermal-fluid coupling model to solve for the real-time physical backlash value affected by temperature and viscosity; mapping the real-time physical backlash value and the liquefaction rate parameter to a motion control algorithm to generate a current loop control command containing multi-source error compensation components; and generating a pulse width modulation signal to drive the joint motor according to the command. This invention achieves joint decoupling of thermodynamic state and mechanical error through energy state observation and thermal-fluid coupling modeling, solving the problems of blind spots in heat dissipation monitoring and thermal drift of errors, and improving position tracking accuracy and dynamic response performance.

The invention relates to a device (1) for swirling synthetic filaments (F), wherein the device has a mounting device (2) for inserting a swirling nozzle (3), wherein the mounting device (2) has a fluid coupling (20) with which the swirling nozzle (4) can be coupled to a swirling fluid (3), in particular compressed air, so that a swirling channel (40), which is formed in the longitudinal extension direction (L) and within the swirling nozzle (4), can be supplied with the swirling fluid (3), wherein the filaments (F) to be swirled can be inserted into the swirling channel (4) via an insertion channel (41) which is in fluid communication with the swirling channel (40), wherein in an operating state of the device (1) an access section (49) to the insertion channel (41) is blocked with a cover (6).

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 and fluid coupling systems that are constructed in a compact configuration.

The invention relates to an apparatus for twisting multifilament threads, wherein the apparatus comprises a mounting device (2) for inserting a twisting nozzle (3), wherein the mounting device (2) comprises a fluid coupling (20) with which the twisting nozzle (4) can be coupled with a twisting fluid (3), in particular compressed air, such that a twisting channel (40) formed in the longitudinal direction (L) and located within the twisting nozzle (4) can be supplied with the twisting fluid (3), wherein the filaments (F) to be twisted can be inserted into the twisting channel (4) through an insertion channel (41) which is in fluid communication with the twisting channel (40), wherein, in the operating state of the apparatus (1), an entry portion (49) leading to the insertion channel (41) is blocked by a cover (6).

The present invention relates to an installation device (100) for mounting a sample separation unit (30) for separating fluid samples in a sample separation apparatus (10). The installation device (100) includes: a first fluid port (102) for fluid connection to a first fluid connection point (104) of the sample separation unit (30); an actuation unit (110) operable by a user to move between an access position accessible by the user and a fluid coupling position of the fluidly coupled sample separation unit (30); and a fluid coupling mechanism (112) designed to form a force-loaded fluid coupling between the first fluid port (102) and the first fluid connection point (104) when the sample separation unit (30) is moved by the actuation unit (110) to the fluid coupling position.

A fluid coupling for transferring an electric current through a rotating joint includes a housing including an outer conductor and an outer insulator positioned between the housing and the outer conductor, a shaft including an inner conductor and inner insulator positioned between the shaft and the inner conductor, a first seal positioned between the housing and the shaft, a second seal positioned between the housing and the shaft, a first electrical wire connected to the outer conductor, a second electrical wire connected to the inner conductor, a third electrical wire connected to the housing, a chamber defined at least partially by the inner and outer conductors and the first and second seals, an electrically conductive fluid inside the chamber forming an electric connection between the inner and outer conductors.

A structural piling that is configured to utilize a thermoregulatory function to ensure stability of the ground adjacent to the piling subsequent insertion of the structural piling. The piling includes an outer pipe member having a first end and a second end being sealed at each. The outer pipe member includes an interior volume having a liquid disposed therein. The interior volume of the outer pipe member further includes an inner pipe member. The inner pipe member includes a first end and second end being hollow therebetween. Openings are present at the first end and second end of the inner pipe member so as to facilitate fluid coupling with the interior volume of the outer pipe member. The inner pipe member is manufactured from an alternate material such as but not limited to plastic. The outer surface of the outer pipe member can further be equipped with a helical blade.