24 results about "Liquid dynamics" patented technology

The invention discloses a method and a device for measuring a dynamic contact angle of liquid on a solid surface. The method comprises the following steps: constructing a to-be-measured system containing a first liquid phase, a fluid phase and a solid phase; immersing the to-be-detected surface of the solid phase in the environment phase upwards or downwards; an end surface object is arranged opposite to the to-be-detected surface, and the two are immersed in the same environment phase; the relative distance and position of the two are adjusted, and a longitudinal fluid bridge is formed through the liquid adding device; the camera device obtains a fluid bridge interface contour image from the side surface; horizontally moving the surface of the end surface object or the solid phase, and applying transverse lateral dragging acting force to the fluid bridge to promote the fluid bridge to deform and contact the peripheral line to move or be about to move; and recording the time sequence change of the image, analyzing and calculating to obtain the time change relationship between the contact angle value and the three-phase contact point position value, and further determining the static, forward and backward contact angles and the contact angle hysteresis value. The method is simple and accurate, has wide applicability, and can cover reliable dynamic contact angle data measurement from hydrophilic to super-hydrophobic surfaces.

The invention discloses an excrement liquid dynamic proportion regulation and control method based on sensing feedback, and particularly relates to the technical field of waste fluid control, and the method comprises the following steps: arranging a plurality of sensors in an excrement liquid conveying pipeline, collecting multi-parameter data such as flow, conductivity, solid content and the like, calculating a load fluctuation entropy value and a control conflict count value, and calculating a load fluctuation entropy value and a control conflict count value; the current control state is judged, the priority and the execution frequency of proportional integral differential control and self-adaptive control are dynamically adjusted based on the state result, a dilution ratio control signal is generated, a variable frequency pump is driven to be linked with an electric valve, clear water injection and excrement liquid mixing control are achieved, and the solid content is stabilized within the target range; according to the invention, the system state is identified through the combination of entropy and conflict counting, the priority and frequency of the control strategy are dynamically switched, and accurate adjustment under steady state and disturbance is realized; and meanwhile, a dilution ratio control signal is linked with the variable frequency pump and the electric valve, a closed-loop dilution control channel is constructed, and the intelligence and stability of solid content regulation and control are improved.

This invention proposes a high-frequency component analysis method for vortex-induced vibration signals induced by multiphase fluids, comprising: S1, determining the physical model and assumptions; S2, modeling the interaction between gas and liquid two-phase flows; S3, introducing vortex and vortex dynamics; S4, selecting a numerical solution method to solve the equations formed in S1-S3; S5, multiphysics coupling and solving, including gas-liquid dynamic coupling, thermal-fluid coupling, and interface coupling; S6, solving for vortex behavior and vortex evolution; and S7, experimental verification and result analysis. The study of unsteady gas-liquid coupled vortex models within a finite physical space involves the interaction of gas-liquid two-phase fluids and the evolution of vortices. A gas-liquid coupled vortex model is established to simulate the characteristics of vortex-induced vibration under different flow conditions. Through numerical simulation and experimental comparison, the accuracy and effectiveness of the high-frequency component analysis method are verified, and the relationship between the high-frequency components of the vortex-induced vibration signal and the multiphase fluid is verified.

The application discloses a manure liquid dynamic proportioning regulation and control method based on sensing feedback, and particularly relates to the technical field of waste fluid control, and comprises the following steps: a plurality of sensors are arranged in a manure liquid conveying pipeline, multi-parameter data such as flow, conductivity and solid content rate are collected, load fluctuation entropy values and control conflict count values are calculated, a current control state is determined, and the priority and execution frequency of proportional integral derivative control and adaptive control are dynamically adjusted based on the state result, a dilution ratio control signal is generated, a variable frequency pump and an electric valve are driven in linkage, clean water injection and manure liquid mixing control are realized, and the solid content rate is stabilized in a target range; the application realizes accurate regulation under steady state and disturbance by jointly identifying the system state through the entropy value and the conflict count and dynamically switching the control strategy priority and frequency; meanwhile, the dilution ratio control signal is linked with the variable frequency pump and the electric valve, a closed-loop dilution control path is constructed, and the intelligence and stability of the solid content rate regulation and control are improved.

1. Name of this design product: Car Steering Wheel Cover (Liquid Dynamic - Xingyue L). 2. Application of this design product: Patches for automobile steering wheels. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the key points of the design: Design 1 Stereoscopic Drawing 1. 5. Designate Design 1 as the base design.

1. Name of the Design Product: Automobile Steering Wheel Patch (Liquid Dynamics - Geely). 2. Use of the Design Product: Patch for automobile steering wheel. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photograph Most Illustrating the Design Key Points: Perspective View 1 of Design 1. 5. Design 1 is designated as the basic design.

The invention discloses a method, device and equipment for determining a dyne value of a substrate surface and a storage medium, and relates to the technical field of computers. The method comprises the following steps: acquiring a plurality of frames of test images recording the dynamic wetting process of test liquid on the surface of a base material; determining the shrinkage speed of the test liquid on the surface of the base material according to the multiple frames of test images; and determining a target dyne value of the surface of the base material according to the shrinkage speed. According to the technical scheme, the dynamic change of the wetting process is recorded and quantitatively analyzed through multiple frames of images, the corresponding relation between the shrinkage speed and the dyne value based on image calculation is more accurate, the random error of manual visual judgment is remarkably reduced, and the test result has good repeatability and comparability.

1. Name of this design product: Car Steering Wheel Patch (Liquid Dynamics - BMW 5 Series). 2. Application of this design product: Patches for automobile steering wheels. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the key points of the design: Design 1 Stereoscopic Drawing 1. 5. Designate Design 1 as the base design.

The invention discloses a high-precision reconstruction method for a dynamic liquid level of a trace liquid. The method comprises the following steps: synchronously acquiring a binocular image sequence of the dynamic liquid level of the trace liquid to be measured; based on the binocular image sequence, obtaining an initial three-dimensional point cloud of the dynamic liquid level through stereoscopic vision three-dimensional reconstruction; constructing a fluid mechanics constraint model of the micro-liquid based on the action of surface tension and gravity; performing iterative optimization processing on the initial three-dimensional point cloud by taking a fluid mechanics constraint model as a constraint condition to obtain an optimized dynamic liquid level three-dimensional model; based on the optimized dynamic liquid level three-dimensional model, the liquid level height and the volume capacity of the micro liquid are calculated. According to the method, visual three-dimensional reconstruction and fluid mechanics constraints are fused, the liquid level form better conforms to the physical reality through iterative optimization, the measurement precision, response speed and anti-jamming capability of the micro-liquid in the dynamic process are remarkably improved, and the method is suitable for the precise metering requirements of the fields of biomedicine, chemical analysis and the like for micro-upgrading liquid.

The invention provides a method and a system for detecting the residual electric quantity of a power battery by using an electrical coupling model, and the method comprises the following steps: developing the electrical coupling model through the coupling of an equivalent circuit model and a gas-liquid dynamic model, and improving the modeling precision of the battery; discretizing a state equation of the electrical coupling model; an SOC detection method is developed, two independent technical routes are applied to improve the reliability and robustness of SOC estimation, and extended Kalman filtering is applied to improve the accuracy of SOC estimation; a power battery SOC detection system is developed, and real-time detection of the remaining electric quantity of the power battery is achieved; and verifying the detection precision of the residual electric quantity of the power battery through a UDDS actual measurement working condition. According to the method, the equivalent circuit model and the gas-liquid dynamic model are coupled, the electrical coupling model is provided, and the battery modeling precision is improved; the SOC of the battery is estimated by adopting two independent paths, so that the reliability and robustness of the SOC estimation method of the battery are improved; and the precision of the SOC estimation method is improved by introducing extended Kalman filtering.

The invention provides a dual-path battery health state estimation method based on an electrical coupling model, which comprises the following steps: step 1, establishing an electrical coupling model of a battery, the electrical coupling model comprising a gas-liquid dynamic model and an equivalent circuit model; 2, performing parameter identification on the gas-liquid dynamic model and the equivalent circuit model respectively; 3, constructing a joint estimation state equation based on the key parameters obtained through identification, and carrying out fusion estimation on the battery state; and 4, providing a battery health state estimation method based on the gas-liquid coupling model. According to the method, through dual prediction of the gas-liquid dynamic model and the equivalent circuit model, high-precision parameters of the gas-liquid dynamic model and structural simplicity and convenience of the equivalent circuit are considered, and accuracy and robustness of a prediction result are ensured; meanwhile, the parameter identification of the gas-liquid dynamic model is convenient, the parameter is used as the aging characteristic of the battery, the physical significance of the model is reflected, and errors generated by model prediction iteration can be avoided.

1. Name of this design product: Car Steering Wheel Cover (Liquid Dynamics - BMW 3 Series). 2. Application of this design product: Patches for automobile steering wheels. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the key points of the design: Design 1 Stereoscopic Drawing 1. 5. Designate Design 1 as the base design.

The invention relates to a carbon dioxide oil displacement full-flow rheological property test system and method, and the system comprises a carbon dioxide oil displacement fluid circulation system which is used for the circulation flow of fluid; the liquid dynamic rheological testing unit is used for receiving a fluid medium which is in a liquid state and does not reach a steady state in the oil displacement process; the liquid steady-state rheological testing unit is used for receiving a fluid medium which is in a liquid state and reaches a steady state in the oil displacement process; the supercritical dynamic rheological testing unit is used for receiving a fluid medium which is in a supercritical phase state and does not reach a steady state in the oil displacement process; the supercritical steady-state rheological testing unit is used for receiving a fluid medium which is in a supercritical phase state and reaches a steady state in the oil displacement process; the gaseous dynamic rheological testing unit is used for receiving a fluid medium which is in a gaseous phase state and does not reach a steady state in the oil displacement process; the gaseous steady-state rheological testing unit is used for receiving a fluid medium which is in a gaseous phase state and reaches a steady state in the oil displacement process, and the device and the method can be widely applied to the technical field of rheological property testing.

The utility model discloses a hydraulic positioner which comprises a base, and an overturning adjusting module is installed on the base. The overturning adjusting module comprises a first air cylinder installed at the bottom of the base, the movable end of the first air cylinder is connected with a rotation angle adjusting module, and the rotation angle adjusting module is rotationally connected with the two sides of the upper portion of the base respectively. A pneumatic chuck is mounted on the rotation angle adjusting module; according to the utility model, the hydraulic driving system is adopted to adjust the turning displacement of the positioner, so that the stability of the positioner in long-time operation is improved, the operation precision is higher, the hydraulic driving system is suitable for heavy workpieces with higher load, the abrasion of parts of the positioner can be reduced when the positioner bears larger load, and the working efficiency is improved. And the service life of the positioner is prolonged, and the maintenance cost is reduced.

The present invention relates to the technical field of circuit board etching, and discloses a PCB etching liquid homogenization system based on a liquid dynamic mixing structure, comprising an etching tank; a protective plate is detachably mounted on the top of the etching tank, a rotating shaft is rotatably mounted in the space formed by the protective plate and the etching tank, a limiting member for clamping the PCB board is provided on the outer surface of the rotating shaft, and a swinging member for disturbing the etching liquid is provided in the etching tank; wherein the limiting member comprises a limiting frame fixedly connected to the outer surface of the rotating shaft, and an abutment block is fixedly connected to the bottom of the limiting frame. The PCB etching liquid homogenization system based on a liquid dynamic mixing structure can effectively solve the problem in the prior art that products such as copper ions generated by the reaction accumulate locally, and this concentration gradient forms a diffusion boundary layer, which hinders the replenishment of fresh etching liquid to the board surface, resulting in a decrease in etching rate, thereby causing inconsistent etching rate on the circuit board surface and affecting the etching quality of the circuit board.

The utility model discloses a liquid dynamic mixing device which comprises a supporting frame and a rotating shaft, the supporting frame is rotatably connected with a mixing tank through the rotating shaft, a cover plate is hinged to the top of the mixing tank, the top of the cover plate is communicated and connected with a feeding pipe, the bottom of the mixing tank is communicated and connected with a discharging pipe, and the liquid dynamic mixing device further comprises a driver and stirring blades. A mounting block is mounted at the bottom of the inner wall of the mixing tank, a drainage cover is mounted at the top of the mounting block, and drainage holes are formed in the drainage cover. Different liquids are mixed through the stirring blades, irregular vortexes and negative pressure are formed in the drainage cover, and the different liquids are sucked from the bottom of the drainage cover, lifted into the drainage cover and fully mixed, are continuously thrown out of the drainage cover under the action of centrifugal force, then flow back into the drainage cover and are repeatedly circulated between the mixing tank and the drainage cover, so that the mixing effect is greatly improved. The liquid is more uniformly distributed in the container, the local concentration difference or layering phenomenon is avoided, the liquid with different components can be better fused, and the quality and the consistency of products are improved.

1. Name of the Design Product: Automobile Steering Wheel Patch (Liquid Dynamic - AITO M9). 2. Use of the Design Product: Patch for automobile steering wheel. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photograph Most Illustrating the Design Key Points: 3D View 1 of Design 1. 5. Design 1 is designated as the basic design.

1. Name of the Design Product: Automobile Steering Wheel Patch (Liquid Dynamic - Zeekr). 2. Use of the Design Product: Patch for automobile steering wheel. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photograph that Best Illustrates the Design Key Points: Perspective View 1 of Design 1. 5. Design 1 is designated as the basic design.

1. Name of the Design Product: Automobile Steering Wheel Patch (Liquid Dynamic - NIO Diamond Inlaid). 2. Use of the Design Product: Patch for automobile steering wheel. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photograph that Best Illustrates the Design Key Points: Perspective View 1.

The invention relates to the technical field of hydrometallurgy production systems, in particular to a solvent regeneration control method for separating zirconium and hafnium through MIBK method centrifugal extraction, which comprises the following steps: S1, data acquisition: acquiring real-time temperature data of a mixed phase in a control system and temperature, pressure and flow data of cooling liquid; all data are transmitted to the controller; s2, parameter comparison: comparing the received real-time temperature of the mixed phase with a preset target temperature of the mixed phase by the controller, and analyzing the relative size of the real-time temperature of the mixed phase and the target temperature of the mixed phase; and S3, dynamic regulation and control of the cooling liquid: based on an analysis result of the step S2, the controller adjusts the opening degree of a cooling liquid flow adjusting unit through a heat exchange module, controls the flow of the cooling liquid and adjusts the heat exchange rate of the mixed phase in the neutralization reactor, so that the temperature of the mixed phase quickly responds and is maintained in a preset range. According to the control method, neutralization reaction heat in the solvent regeneration system can be removed in time, and the solvent regeneration efficiency and quality are improved.

The invention discloses an inertia friction welding machine axial whole process closed type liquid dynamic and static pressure bearing main shaft system, a rotating side main shaft is arranged in a main shaft box, and a rolling ball bearing is arranged between one end of the rotating side main shaft and the wall of a bearing box; a speed reducer transmission gear is arranged on the rotating side main shaft on the adjacent side of the bearing; on the adjacent side of the gear, a double-row cylindrical roller bearing is arranged between the rotating side main shaft and the wall of the supporting box; a bearing side liquid dynamic and static pressure thrust bearing base is arranged on the rotating side main shaft on the adjacent side of the bearing; a bearing side liquid dynamic and static pressure thrust bearing is arranged on the rotating side main shaft on the adjacent side of the base; an inertia energy storage disc is arranged at the other end of the rotating side main shaft, and a double-row angular contact ball bearing is arranged between the rotating side main shaft and the wall of the supporting box on the adjacent side of the energy storage disc; a non-bearing side liquid dynamic and static pressure thrust bearing base is arranged on the rotating side main shaft on the adjacent side of the bearing; a non-bearing side liquid dynamic and static pressure thrust bearing is arranged on the rotating side main shaft on the adjacent side of the base. According to the invention, the axial bearing is guaranteed, and the welding processing efficiency is improved.

The invention discloses a low-temperature liquid dynamic pressure balance filling system and method, and relates to the field of low-temperature liquid filling. The method comprises the following steps: performing image information identification on a to-be-filled vehicle; after the vehicle confirms the information and the starting condition is met, a pre-cooling stage is started, and after pre-cooling is completed, a filling stage is started; in the filling stage, the filling pump is started, and when the pressure reaches the preset condition, the filling valve is opened; the reflux valve is adjusted, after the filling target is achieved, the filling pump and the filling valve are closed, the reflux valve is opened until the preset time is reached, and filling is completed; and in the filling process, early warning monitoring is started, real-time early warning monitoring is conducted on the filling process, whether the filling target is reached or not is determined, if the target is reached, the filling pump stops running, the filling valve is closed, the backflow stage is started, backflow is ended, and filling is completed. And through real-time multi-dimensional sensor monitoring, abnormal early warning and automatic control, the safety, precision and efficiency of the filling process are remarkably improved, and the operation risk and the labor burden are reduced.

This invention relates to a closed-loop axial hydrostatic / hydrostatic bearing spindle system for an inertial friction welding machine. The invention aims to address the problem that in inertial friction welding machines, the system cannot adaptively adjust the oil film thickness of the hydrostatic / hydrostatic thrust bearing according to the magnitude of the axial upsetting force from start to finish, thus failing to form a fully closed-loop system. The spindle system is equipped with opposing double-sided hydrostatic / hydrostatic thrust bearings. One side is a load-bearing hydrostatic / hydrostatic thrust bearing (11), and the other side is a non-load-bearing hydrostatic / hydrostatic thrust bearing (12). The non-load-bearing hydrostatic / hydrostatic bearing (12) acts as a back pressure, improving the oil film stability and stiffness of the load-bearing hydrostatic / hydrostatic thrust bearing (11), increasing welding accuracy, facilitating control of axial shortening, and improving welding stability and efficiency. The specific structure is shown in Figure 1.

The invention provides a sodium ion battery SOC accurate estimation method based on an improved gas-liquid dynamic model and a battery management system, and the method comprises the following steps: building a gas-liquid dynamic model used for describing the charge-discharge and polarization process of a battery, the gas-liquid dynamic model constructs a gas total solubility equation in the process of dissolving gas in liquid by simultaneously considering gas gap filling solubility and gas hydration solubility; and estimating the state of charge (SOC) of the battery based on the gas-liquid dynamic model and the input and output data of the battery. A traditional gas-liquid dynamic model only simulates the polarization effect of a battery through gas gap filling solubility, voltage rebound characteristics strongly related to the polarization reaction are difficult to completely describe, and large errors exist in the model. Therefore, the gas hydration solubility is introduced during modeling, and the gas-liquid dynamic model is improved, so that the polarization dynamic behavior of the sodium ion battery is represented more accurately, and the SOC estimation precision is improved.