52 results about "Fluid interface" patented technology

The invention discloses a capillary pressure and contact angle synchronous characterization method and device of a microfluidic fluid interface, and relates to the field of interface analysis and multiphase seepage in pore media, and the method comprises the following steps: based on a pre-configured pore, particle and fluid binary image, distinguishing and extracting a fluid-particle contact interface contour and an attack / defense fluid interface contour; fitting and determining the curvature radius of each fluid interface contour through a watershed region division algorithm and reordering smoothing of Fourier descriptors; generating a multi-level size pore space based on the pore binary image, and obtaining a pore overlook radius; calculating a necking angle in combination with the curvature radius and the multi-stage size pore space to obtain an apparent contact angle and an intrinsic contact angle; and calculating the capillary pressure of the attack / defense fluid interface by combining the curvature radius, the pore overlook radius, the chip depth and the interfacial tension. According to the invention, high-precision technical support is provided for micro-fluidic multiphase seepage research.

The present invention relates to the technical field of heating devices. Disclosed are a heating device and a manufacturing method therefor, and a household appliance. The heating device specifically comprises a heating accessory, water nozzles, and second supports. The heating accessory is provided with at least one fluid channel and fluid interfaces arranged at two ends of the fluid channel; the water nozzles are detachably connected to the respective fluid interfaces; the second supports are connected to the side of the heating accessory facing the water nozzles, a second through hole is formed in each second support, and one end of the corresponding water nozzle passes through and extends out of the second through hole, wherein the water nozzle can be moved into or out of the second through hole and can be detachably mounted to the fluid interface. The water nozzle can directly extend into the through hole and be mounted to the fluid interface, greatly simplifying the mounting steps of the water nozzle. In addition, the water nozzle can also be directly removed via the second through hole without removing the corresponding second support, thereby facilitating maintenance or replacement of the water nozzle.

The application discloses a charging plug, a charging gun and a joint assembly, and relates to the technical field of ground maintenance. The fluid channel defined by the charging plug is used for connecting a cooling source. The fluid flow cavities are respectively connected with the fluid channel and the fluid interface, so that the cooling circuit of external equipment such as an electric vehicle can be connected with the fluid interface on the charging plug conveniently and quickly, and the heat management capability is improved. In addition, the charging plug can switch the in-out liquid direction through the first and second fluid flow cavities, so that the internal temperature difference of the battery system of the corresponding external equipment can be reduced through the timing switching. Alternatively, the heat exchange fluid in the loop connection cavity can independently perform heat management through the cooling circuit of the external equipment, which is beneficial to improving the accuracy of heat management on the external equipment, improving the temperature uniformity of each position of the external equipment, and enabling the heat exchange fluid in the charging cooling cavity to independently dissipate heat for the to-be-cooled charging terminal or the charging wire harness.

Disclosed is an embodiment of an apparatus comprising a utility section adapted to be positioned in a server chassis and adapted to couple with an electronics section in the server chassis. The utility section comprises a power distribution panel, a fluid handling module, a fan module electrically coupled with the power distribution panel, or both the fluid handling module and the fan module. An external power interface is adapted to electrically couple the power distribution panel with a rack power supply, and an internal power interface is adapted to electrically couple the power distribution panel with one or more servers in the electronics section within the chassis. An external fluid interface is adapted to fluidly couple the fluid handling module with a rack fluid circulation loop, and an internal fluid interface is adapted to fluidly couple the fluid handling module with a server fluid inlet and a server fluid outlet of each of the one or more electronics sections.

This invention discloses a simulation method, apparatus, medium, and device for flip chip underfill, relating to the field of flip chip underfill simulation technology. The invention simulates the flip chip underfill process within a computational domain divided into two meshes in a flow plane perpendicular to the depth direction using a color gradient lattice Boltzmann model. A color function clearly distinguishes between the wetting phase (filler adhesive) and the non-wetting phase (air) to dynamically track the two-phase interface. When simulating the flow field changes during the self-absorption process of flip chip underfill, the average curvature of the interface in the depth direction and the average frictional force of the upper and lower solid walls of the flip chip are introduced to determine the force applied at the two-phase fluid interface, thus reflecting three-dimensional physical effects. While maintaining near-two-dimensional computational costs, this invention significantly improves the accuracy of flip chip underfill simulation and can quickly predict the entire flip chip underfill process at a lower cost.

A distributor assembly (14), particularly designed for a separation unit (12) of a modular process equipment unit (10), includes a fluid distribution device with a plurality of fluid interfaces (28, 30), wherein the fluid distribution device is capable of selectively establishing and blocking flow connections between the fluid interfaces (28, 30). The distributor assembly also includes an interface element (42) and a fastening element (58). The interface element (42) is mountable on one of the fluid interfaces (30), and the distributor assembly (14) has an associated mounting groove (60) at the fluid interface (30). The mounting groove (60) is adapted to the shape of the fastening element (58) such that the fastening element (58) can be introduced into the mounting groove (60) up to a defined fastening position in which the fastening element (58) engages with and secures the interface element (42).

The invention discloses a fuel gear pump fluid-solid coupling method based on RBF reconstruction. The method comprises the following steps: 1, establishing a fuel gear pump model, dividing grids, and carrying out internal flow field simulation to obtain a pressure field cloud picture; step 2, applying a test example to carry out RBF interpolation reconstruction precision verification, selecting a proper primary function by comparing fluid-solid interface data transmission relative errors of the example, and adopting the selected primary function to carry out subsequent gear pump fluid-solid interface flow field reconstruction; 3, gear finite element model preprocessing is carried out, fluid interface pressure data reconstruction is carried out, and then fluid interface data are transmitted to a gear interface; and 4, accurately transmitting the pressure data of the fluid interface to the solid interface through the steps, carrying out fluid-solid coupling solution to obtain a structural stress-strain field cloud picture, and analyzing the contact meshing characteristics of the gear. According to the invention, high-precision parameter transmission of a fluid-solid interface is realized, and coupling analysis of a gear pump pressure field and a gear stress-strain field is carried out.

A fluid interface is disclosed including a fluid controller mounted onto a host structure. The fluid controller includes a manifold with a fluid outlet port and a fluid inlet port. The fluid controller includes fluid sensors operatively configured to measure flow characteristics of one or more fluids transferred between the fluid inlet port and the fluid outlet port, wherein the fluid inlet port is coupled to at least one fluid source. The fluid interface includes a fluid connector mounted onto the host structure. The fluid connector includes an actuator mounted onto the exterior side of the host structure, a valve coupled to an actuator rod of the actuator, and an elastically deforming tubing comprising a first end and a second end, wherein the first end is operatively connected to the valve and the second end is operatively connected to the fluid outlet port.

Embodiments herein relate to calibration of a personal breath tester device. In an embodiment, a calibration system is included having a calibration station having a calibration standard fluid source and a fluid interface. The calibration station can include a first calibration station port and a second calibration station port. The calibration system can include a substance tester device having a first tester port, a second tester port, and a detection element. The substance tester device is configured to be docked to the calibration station such that the first calibration station port is in communication with the first tester port and the second calibration station port is in communication with the second tester port. The calibration station can charge the power supply of the substance tester device and upon receiving a calibration initiation signal, provide a portion of the calibration fluid to the detection element. Other embodiments are also included herein.

The application relates to the field of medical devices, and relates to a stimulating coil replacement device and method and a transcranial magnetic therapy instrument. The device comprises a coil fixing seat, the inside of the coil fixing seat is provided with a mounting portion and an interface assembly for connecting external pipelines, the surface of the coil fixing seat is provided with an operation window corresponding to the interface assembly; the coil carrier is provided with a connecting portion matched with the mounting portion and a connector assembly detachably connected to the interface assembly; a locking piece is detachably connected to the coil fixing seat to lock the connecting portion; a sealing cover plate is detachably connected to the operation window, when the sealing cover plate is in a connected state, the connector assembly is shielded by the sealing cover plate; when the sealing cover plate is detached, the connector assembly is exposed for plugging and unplugging operation. The scheme simplifies the coil replacement process, avoids the use of special tools, effectively protects the key high-voltage and fluid interface during non-operation period, and reduces the risk of interface damage and liquid leakage.

The invention discloses a liquid separation device for automatic library construction, which comprises a patch board, the upper surface of which is provided with a plurality of fluid interfaces communicated with an external injection pump or an air source through conduits; the temperature control structure comprises a low-temperature control area and a normal-temperature control area which are arranged in a mutual heat insulation manner The interface board comprises a laminated micro-fluidic structure of an upper-layer plate, a middle film and a lower-layer plate, the upper-layer plate is provided with a reagent injection port and an air valve interface, the middle film forms a micro-valve which can be controlled to be opened and closed under the action of air pressure, the lower-layer plate forms at least one metering micro-channel and a transmission micro-channel, and a quantitative volume of reagent is injected into the digital micro-fluidic chip through a liquid injection connector at the downstream. The device is compact in structure, reliable in sealing, high in modularization degree and suitable for gene sequencing library construction and related microfluidic automation application.

A combined plumb and level measurement apparatus can comprise a housing defining a sealed chamber and a viewing window with at least one transparent face. A fluid interface between a fluid occupying a first volume within the sealed chamber and a headspace above the fluid provides a level reference across the viewing window. A pendulum within the sealed chamber extends through the fluid and is pivotably supported about a pivot axis proximate a geometric center of the sealed chamber, where the pendulum aligns with a direction of gravity independently of an orientation of the housing to provide a plumb reference visible through the viewing window concurrent with the level reference of the fluid interface. Exterior indicia along a housing circumference include at least a first pair of opposed level reference marks and a second pair of opposed plumb reference marks angularly offset from the opposed level reference marks.

The invention relates to an underground holdup measuring method and an underground fluid interface and geometric distribution determining method, and belongs to the technical field of oil-gas exploration. According to the underground holdup measuring method, a plurality of tuning forks distributed on a flow cross section are utilized, oil-water judgment is achieved by comparing the fluid density collected by the tuning forks with a preset oil-water density distinguishing threshold value, and characterization of the underground fluid holdup is achieved by utilizing the time proportion of oil / water collected by the tuning forks. The method has the advantages of good universality, high measurement efficiency and high resolution. According to the method for determining the underground fluid interface, oil-water judgment is achieved through a plurality of tuning forks distributed on a flowing section, an oil-water demarcation point is recognized according to the oil-water alternate switching phenomenon, and the oil-water interface of the horizontal well is determined. According to the underground fluid geometric distribution determination method, oil-water judgment is achieved through a plurality of tuning forks distributed on a flowing cross section, and a fluid geometric distribution diagram is drawn by combining local oil holdup calculation and tuning fork position distribution.

The application relates to the technical field of polymer forming and processing equipment, and discloses a multi-material composite part embedding and glue sealing integrated injection molding equipment, which comprises a fixed mold assembly and a movable mold assembly. An inner layer positioning core for bearing an embedded part is arranged in the movable mold assembly, and a middle layer logic forming sleeve is arranged outside the inner layer positioning core. The middle layer logic forming sleeve is driven by a driving unit to move along the outer wall of the inner layer positioning core. A fluid control circuit and an adaptive support mechanism connected with the fluid control circuit are arranged in the fixed mold assembly. A fluid interface is arranged on the matching surface of the fixed mold assembly and the movable mold assembly. The shearing flow channel logic hole in the sidewall of the middle layer logic forming sleeve serves as a physical switch, directly converts the cavity reconstruction action of the movable mold into a hydraulic trigger signal of the support pin of the fixed mold, and enables the mold system to maintain high operation robustness under harsh working conditions such as high temperature, high pressure and strong electromagnetic interference.

The invention provides an intelligent automobile pump cooperative control method and system based on digital twinning, and the method comprises the steps: firstly recognizing the rheological characteristic difference of new and old concrete through a hopper sensor array, and generating a digital model of a heterogeneous fluid interface; self-excited vibration generated when the pumping system works is used as a detection source, and the spatial position of an interface in a conveying pipeline is positioned in real time by analyzing a vibration echo signal. A dynamic evolution model is constructed based on the position, the future motion deformation trend of the interface is predicted, and the time when the interface arrives at the key position is accurately calculated and the pressure impact is estimated. And a set of nonlinear cooperative control curve containing various execution parameters is generated in advance according to a prediction result, and the pumping system is driven to operate according to the curve in a predicted time window. According to the invention, active avoidance and cooperative control of the pumping risk are realized, and the construction safety is improved.

The invention discloses an integrated manufacturing method of a high-precision micro-fluidic chip, and relates to the technical field of chip manufacturing. The method comprises the following steps: providing a precision mold, wherein a cavity of the mold defines a micro-channel network and a functional chamber of the micro-fluidic chip; an independent and removable sacrificial mandrel is accurately assembled and fixed at a predetermined position of the mold before mold closing, and the sacrificial mandrel is used for directly defining the complete three-dimensional geometry of the fluid interface in the forming process. The sacrificial core shaft and the chip main body are integrally formed, so that the defects of interface collapse of a traditional bonding process and burrs of secondary machining are fundamentally eliminated, and high-precision and leakage-free manufacturing of a fluid interface is realized. According to the method, the reliability and the consistency of the chip are greatly improved, synchronous manufacturing of a complex three-dimensional flow channel and a high-quality interface is realized through an optional'dual sacrifice technology ', and the function integration capability of the micro-fluidic chip is remarkably enhanced.

The invention relates to an intermediate plate (100) for a distribution unit (200), wherein the distribution unit (200) has a first and a second housing part (210; 220), wherein the intermediate plate (100) can be arranged between the first and second housing part (210; 220) and is designed to at least partially seal the first and second housing part (210; 220), wherein the intermediate plate (100) has at least one fluid interface (110) for a fluidic exchange between the first and second housing part (210; 220), and wherein the intermediate plate (100) is designed to be at least partially thermally insulating.

The invention relates to a valve module (100) for a valve unit (200) and for adjusting fluid flows, comprising: a module housing (110) with a circular receiving opening extending along a valve axis (VA) for receiving a circular channel disk (120), wherein the module housing (110) has a plurality of fluid interfaces (111; 112) for fluidic communication with the receiving opening; the circular channel disk (120) with a predetermined number of channels (121), wherein the channel disk (120) can be arranged in the receiving opening and is rotatable about the valve axis (VA) such that, based on a position of the channel disk (121), the plurality of fluid interfaces (111;112) are fluidically connectable by means of the channels (121), wherein the channel disk (120) extends from a front surface to a rear surface along the valve axis (VA) and the channel disk (120) has a coupling unit (130) at least on one of the two front and rear surfaces, wherein a rotation can be transmitted to the channel disk (120) by means of the coupling unit (130).

This invention relates to the technical field of fluid interface performance and discloses a dynamic contact angle measurement method based on the Boltzmann phase field model. The method uses a lattice Boltzmann phase field model to simulate the collision process between a dispersed phase fluid in a continuous phase fluid and an obstacle. Within each time step, the current sequence parameters corresponding to each lattice in the phase field model are calculated to determine the region of the dispersed phase fluid within the model, thereby determining the dispersion boundary. A trapezoidal structure is then used to divide the dispersion boundary containing the forward and backward contact angles of the dispersed phase fluid. Finally, the angles between the tangents corresponding to the obstacle boundary and the tangents corresponding to the forward and backward contact angles of the dispersion boundary are calculated, which represent the contact angle between the dispersed phase fluid and the obstacle. This allows for real-time detection of changes in the contact angle of the dispersed phase fluid during the collision process.

Methods for locating fluid interfaces in a cased wellbore include generating vibrations in the casing, thereby forming oscillations in the wellbore fluids and the casing. The oscillations are detected by a vibration detector. The oscillations are recorded by a data acquisition system. Mathematical processing of the oscillations by cepstrum analysis is performed to determine the depths of interfaces between fluids in the annulus. The methods may also be employed to determine the time at which a cement slurry begins to set and harden. The methods may be performed in real time.

The utility model discloses an expansion connection type air floating spindle which comprises a shell, the shell is provided with a fluid connector, and the fluid connector comprises a water inlet, a water outlet, an air inlet and an air outlet; the expansion connection type air floating spindle further comprises an expansion connector, one end of the expansion connector is connected with the fluid connector in a sealed mode, and the other end of the expansion connector is connected with a fluid pipeline. The fluid pipeline comprises a water inlet pipe communicated with the water inlet, a water outlet pipe communicated with the water outlet, an air inlet pipe communicated with the air inlet and an air outlet pipe communicated with the air outlet; the expansion joint extrudes the first sealing ring between the fluid interface and the fluid pipeline after the expansion body deforms through mutual extrusion of the expansion body and the circular truncated cone cylinder. According to the utility model, the expansion body and the circular truncated cone cylinder are extruded, so that the expansion body deforms, and the connection reliability and stability of a fluid pipeline and a fluid interface are improved by means of the principle of an expansion bolt.

The invention provides automatic sample loading chromatography equipment and a chromatography method, and relates to the technical field of biological separation.The chromatography equipment comprises a feeding assembly, a processing assembly, a sample loading assembly and a controller, the feeding assembly comprises a plurality of sample containers, a target solution to be subjected to chromatography and an auxiliary solution needed for chromatography of the target solution to be subjected to chromatography; the treatment assembly comprises a chromatographic column; the sample loading assembly is respectively connected with the feeding assembly and the processing assembly, the sample loading assembly comprises a multi-way reversing valve and a fluid driving mechanism, and a fluid interface of the multi-way reversing valve is connected with a plurality of sample containers and chromatographic columns; the fluid driving mechanism is connected with one fluid interface of the multi-way reversing valve and sucks or discharges a sample solution through the multi-way reversing valve; and the controller is in signal connection with the multi-way reversing valve and the fluid driving mechanism so as to control the reversing valve core and the fluid driving mechanism to provide a target solution and / or an auxiliary solution to be subjected to chromatography to the processing assembly. According to the chromatographic equipment, automatic sample loading can be realized, the precision of sample loading quantity is improved, and the chromatographic efficiency is improved.

This document describes systems and method of embedded printing for additive manufacturing. A print material is printed into a support material. The print material and the support material each have a fluid phase and a solid phase. The print material transitions from the fluid phase to the solid phase based on a fluid-fluid interaction with the support material. One or more parameters of the support material can be adjusted to cause a diffusion rate of the print material into the support material during the fluid-fluid interaction to be less than a threshold value. Multiple print materials can be printed into the support material simultaneously. 20 24 20 22 32 08 A pr 2 02 4 A B S T R A C T 2 0 2 4 2 0 2 2 3 2 0 8 A p r 2 0 2 4

The utility model relates to a valve technical field especially relates to a gate valve structure with check valve, the utility model discloses a gate valve structure with check valve includes: the valve body, and its inside forms N valve space, N valve body, each valve body installs in corresponding valve space, and each valve body includes: valve core, valve bush, compression spring, wherein: valve core includes: valve core seat, press ball, spherical spring seat, valve core seat includes: bottom plate, erects on the step of valve space first end, and the middle is provided with the first flow hole of the intercommunication fluid import, the outer tube is formed in the bottom plate side away from fluid interface, and its inside forms the installation space, the spherical spring seat installs in the installation space of the outer tube of valve core seat, the press ball is fixed to the concave spherical end of spherical spring seat, and presses on the first flow hole, the outside of valve bush is fixed on the valve body, and the inside forms the activity space, the utility model solves the problem that the export medium reflux leads to the lower efficiency when compressing gas.

The invention relates to the technical field of oil-gas field development, in particular to an annulus protection fluid displacement ground simulation device for a high-pressure oil-water environment in a shaft, which comprises a high-pressure container system for simulating a high-pressure sealing environment of an underground annulus and providing pressure for a displacement process; the fluid control system is used for injecting annulus protection fluid into the high-pressure container system, controlling the flow and the pressure of the high-pressure container system and receiving displaced fluid at the same time; the visual system is used for observing and recording the displacement process in the high-pressure container system in real time; the fixing system is used for supporting and fixing the high-pressure container system, the fluid control system and the visual system; the underground complex working condition can be accurately reproduced in a ground laboratory environment, technicians are helped to quantitatively evaluate the actual effect of the annulus protection fluid in a real shaft environment, and real-time visual monitoring of behaviors such as fluid interface change, the flowing state and sediment migration in the displacement process can be achieved.

Systems and methods for digitally simulating multi-scale fluid flow in a three-dimensional computer-aided design (CAD) model simulating a space, including digitally simulating movement through a fluid interface of a digital representation of a porous medium, the digital representation containing a grid including voxels, the fluid interface representing a separation between a first fluid and a second fluid; and digitally simulating a residual amount of the first fluid and the second fluid within a pore structure in the porous medium by: determining a first capillary pressure and a second capillary pressure of the porous medium; determining a value of voxels in the grid representing a location in the porous medium associated with the pore structure, the value based on the first and second capillary pressures and a porosity value of the location in the porous medium; and determining a residual amount of the first fluid and the second fluid at the voxel based on the values.

A liquid supply and discharge device is provided, applying a working liquid from a liquid supply station to a working surface of a platform assembly. The device is movable relative to the working surface and includes: a liquid supply conduit assembly applying the working liquid to the working surface; a liquid discharge conduit assembly aspirating the working liquid from the working surface; a conduit structure assembly between the liquid supply conduit assembly and the liquid discharge conduit assembly; a fluid interface assembly between the liquid supply station and the conduit structure assembly; a driving assembly connected to the fluid interface assembly. The driving assembly applies forward driving force to the liquid supply conduit assembly through the fluid interface assembly to apply the working liquid to the working surface, or applies reverse driving force to the liquid discharge conduit assembly to aspirate the working liquid from the working surface.

This invention discloses a free positioning device and its control method, comprising: a housing with a flexible sealing structure at its open edge; a flexible seal for fitting against the surface to be positioned to form a seal, creating a sealed space between them; the flexible seal is directly or indirectly connected to the housing for transmitting pressure to the housing; and a fluid interface disposed on the housing for filling the cavity with pressurized fluid and maintaining the pressure state within the cavity after filling. When the device is pressed against the surface, pressurized fluid is filled into the cavity to form a high-pressure zone, creating a pressure difference between the high-pressure zone and the sealed space between the flexible seal and the surface. This pressure difference drives the flexible seal to press firmly against the surface to be positioned, achieving a secure fixation. After releasing the pressure, the device can be easily removed. This device actively controls the adsorption force by adjusting the fluid pressure within the cavity; the adsorption force is positively correlated with the fluid pressure. The housing isolates the external environment from the cavity, ensuring that the high-pressure state within the cavity is unaffected by external environmental pressure conditions. This device can operate in vacuum environments in space, high-pressure environments in the deep sea, and conventional environments on Earth. It is adaptable to a wide range of surface types, from smooth to rough, and can be integrated and installed as a functional component on other objects. This invention also provides a depth- and load-based intelligent pressure control method to achieve dynamic adjustment of the adsorption force.

The invention relates to a mass flow control system (300) having a carrier plate (301) which, on a first side (302), has fluid interfaces for mounting valve modules (304), each fluid interface having a plurality of channel ports (345), each channel port (345) being connected to an inlet channel (306, 307) or to one of a plurality of outlet channels (309), the inlet channel (306, 307) extends from the first inflow connection (401) through the carrier plate (301) to the second inflow connection (401), and in the inlet channel (306, 307) a blocking assembly (406) is provided which divides the inlet channel (306, 307) into a first inlet channel section (407) and a second inlet channel section (408), the first inlet channel section (407) being in fluid connection with at least one channel opening (345) associated with the first inlet channel section (407), and the second inlet channel section (408) being in fluid connection with at least one channel opening (345) associated with the second inlet channel section (408). The second inlet channel section (408) is fluidically connected to at least one channel opening (345) associated with the second inlet channel section (408), and the mass flow control system has a plurality of valve modules (304) each having at least one valve device (325).