6269 results about "Gas bubble" patented technology

The invention relates to the technical field of water-based paint production, in particular to a water-based paint stirring device with a viscosity detection function, which comprises a mounting seat, a stirring tank is arranged at one corner of the top of the mounting seat, and a tank cover is arranged at the top of the stirring tank; the stirring assembly is arranged in the stirring tank; the bubble adsorption assembly is arranged at the other corner of the mounting seat; the detection assembly comprises a high-frequency ultrasonic probe arranged on the inner wall of the stirring tank, a micro torque sensor and a temperature compensation module which are integrated in the stirring assembly, and a microwave resonant cavity sensor located on the bubble adsorption assembly. Compared with the prior art, the multi-mode viscosity accurate detection and bubble dynamic control of the water-based paint coating in the stirring process are realized through the arrangement of the detection assembly and the cooperative work of the high-frequency ultrasonic probe, the micro torque sensor, the temperature compensation module and the microwave resonant cavity sensor.

The invention provides a multi-source data fusion modeling method and system in an aeration process, and is applied to the field of intelligent aeration control in sewage treatment. The method comprises the steps that multi-source time sequence data such as dissolved oxygen, turbidity, flow, temperature, power and pool bottom pressure pulsation signals are collected, dissolved oxygen response lag is calculated through cross-correlation analysis with power change as the reference, time sequence alignment is carried out, and a dissolved oxygen reference interval is predicted by utilizing calibration data in combination with a physical constraint LSTM model; performing spectral analysis on the pressure pulsation signal to extract a gas-liquid coupling characteristic value, and generating a cooperative regulation instruction of the frequency of the blower and the rotating speed of the stirrer based on the information; by means of the scheme, control oscillation caused by lag of the dissolved oxygen sensor can be effectively overcome, online monitoring of bubble form distribution is achieved, the gas-liquid mass transfer efficiency is improved, invalid aeration is avoided, and system energy consumption is remarkably reduced on the premise that stable effluent quality is guaranteed.

A heat management system includes: a first flow passage in which a reserve tank is not provided; a second flow passage in which a reserve tank is provided; a switching device configured to switch between coupling and uncoupling of the first flow passage and the second flow passage to and from each other; and a control device configured to control the switching device. The control device is configured to, when predetermined coupling conditions are met, make the heat medium flow through the first flow passage and the second flow passage that have been coupled to each other by the switching device. When the control device determines that air bubbles exceeding the allowable volume are present in the heat medium, the coupling conditions switch from being unmet to being met.

The invention provides an underwater ultrasonic Doppler real-time analysis method and device based on a digital transducer, and relates to the technical field of data analys.The method comprises the steps that 1, multiple beams of directional ultrasonic waves are emitted into drilling fluid through a digital transducer array on the outer wall of a marine riser, echo signals reflected by gas-liquid two-phase flow are received, and the digital transducer array is used for receiving the echo signals; performing real-time digital conversion on the echo signal to generate an original digital signal containing phase and amplitude information; 2, Doppler frequency shift feature extraction is conducted on the original digital signals, and the real-time movement speed and direction of bubbles in the drilling fluid are determined by calculating the frequency deviation of reflected ultrasonic waves and transmitted ultrasonic waves. Through the digital transducer array and the ultrasonic Doppler technology, accurate measurement of motion parameters of bubbles in drilling fluid, real-time calculation of local gas content and early warning and grading response of gas cut are achieved, and the safety and the intelligent level of drilling operation are improved.

The invention relates to the field of sealing detection, in particular to a high-pressure stop valve body sealing performance detection device which comprises a detection box body used for placing a valve body for observation and comprising a water tank, the water tank is arranged to be a U-shaped groove with an upward opening, and the bottom of the side of the water tank is fixedly connected with a mounting plate. An outer electric push rod is mounted at the top of the mounting plate; and the supporting assembly is arranged in the water tank, is used for bearing the valve body and comprises a cross beam, and limiting sliding rails are arranged on the two sides of the cross beam. Through cooperation of the first plugging assembly, the second plugging assembly and the supporting assembly, external bubble interference can be effectively avoided, two-way pressure detection is supported, and the detection accuracy and automation level are improved, so that the problems that in the prior art, in the detection process, non-leakage bubbles are generated, judgment of detection personnel is interfered, and the detection efficiency is improved are solved. And false detection or missing detection is caused. And due to limitation of one-way detection, the sealing performance of the valve body in a two-way pressure-bearing state is difficult to comprehensively evaluate.

The invention belongs to the technical field of heating devices, and discloses a thick film heater adopting an indirect heat dissipation technology, which comprises a main shell and a film heating plate, the film heating plate is connected with a radiator, the radiator is connected with heat dissipation fins, the inner side of a heating cavity is connected with a sealing element, and the main shell is connected with a water inlet pipe and a water outlet pipe. A heat dissipation water channel is defined by the heat dissipation device, the heat dissipation fins and the water closing plate, the main shell is connected with a PCBA circuit control board, and the main shell is connected with a low-voltage connector and a high-voltage connector. According to the technical scheme, due to the arrangement of the radiator and other structures, the situation that the radiating fins are directly welded to the heating plate to cause deformation of the heating plate to affect the heating effect or insulation faults is avoided, the radiator and the radiating fins are integrally die-cast, the heat exchange area is greatly increased, the heat exchange coefficient is increased, the heater cannot be locally overheated, and the service life of the heater is prolonged. The tolerance robustness of bubbles existing in a whole vehicle cooling liquid system is enhanced, and the use stability of the heater is greatly improved.

The invention discloses forming equipment for ceramic guide rail production and a forming method thereof, and relates to the technical field of ceramic guide rail forming, the forming equipment comprises a conveyor, a forming processing box and a raw material box, and the top of the conveyor is provided with the forming processing box. The ultrasonic disperser arranged in the raw material box is combined with the constant-temperature heating sleeve and the viscosity sensor of the conveying pipe, uniform flowing and accurate metering injection of slurry are guaranteed, in the forming stage, the vacuum pump actively pumps out bubbles in a cavity through the micropore array, pores are further eliminated in cooperation with the high-frequency micro-vibration device, the compactness and surface smoothness of the guide rail are greatly improved, and the production efficiency is improved. The cooling runner realizes gradient cooling and curing through closed-loop control of a temperature sensor and a temperature regulator, ceramic cracking deformation is effectively inhibited, the rotary mold assembly supports multi-angle adjustment, nondestructive demolding of a complex structure is facilitated, the production period is shortened, the process stability, energy consumption control and equipment adaptation flexibility are further enhanced, and the production efficiency is improved. And the targets of high precision, low defect and batch production are achieved.

The invention relates to the technical field of industrial process control, and discloses an intelligent optimization control method of an alkaline water hydrogen production system, which comprises the following steps: a controller synchronously acquires real-time voltage, current and temperature data of an electrolytic bath; theoretical reversible voltage is calculated according to a Nernst equation, ohm voltage drop is eliminated, and a bubble additional impedance value representing the bubble coverage degree is analyzed; performing differential processing on the change rate of the bubble additional impedance value to generate a flow feed-forward control instruction, combining a feedback control instruction based on temperature deviation to synthesize a target rotating speed instruction, and driving an alkali liquor circulating pump to adjust the flow speed; according to the method, the bubble impedance observation model is constructed, so that zero-delay sensing and decoupling control over the state of bubbles in the electrolytic cell are achieved, hysteresis of single temperature feedback is eliminated, and the problems of actuator saturation and model aging drifting are solved.

The invention discloses vacuum degassing and automatic oiling equipment for a transformer, and relates to the technical field of transformer oiling. Comprising an oil injection device, the bottom of the oil injection device is provided with an anti-bubble suction part, and the anti-bubble suction part is used for preventing bubbles; a mistaken suction prevention part is mounted on the bubble prevention suction part; the mistaken suction prevention part is used for preventing transformer oil from being sucked mistakenly; a floating lifting adapter is mounted on the oil injection device; a film spacer is mounted on the floating lifting adapter; the film spacer is used for spacing new oil and old oil; the thin film spacer can be matched with the floating lifting adapter, so that new oil and old oil are isolated during oil change, mixing of the new oil and the old oil can be reduced, oil change quality is improved, and waste of the new oil is reduced; the problems that an existing transformer vacuum degassing automatic oiling device can only conduct small-amount oiling generally when a transformer does not stop working, and new and old oil isolation replacement oiling is not convenient to conduct are solved.

The invention belongs to the technical field of bubble dynamics and multiphase flow and artificial intelligence, and particularly relates to a high-pressure bubble pulsation load prediction and initial parameter inversion method and system based on artificial intelligence. The underwater high-pressure bubble pulsation process is studied, and interface evolution data in the high-pressure bubble pulsation process are obtained; establishing a compressible VOF-PINN multiphase flow model, and predicting unknown parameters and pulsating load characteristics of bubbles in combination with the initial boundary value; dividing a prediction problem into a positive problem and an inverse problem according to known data; establishing a model which can be used for predicting forward and reverse models; for a positive problem, training and predicting the VOF-PINN model by using a gradient descent optimization algorithm; and for the inverse problem, bubble initial parameter identification is realized. The invention aims to solve the problems that recalculation is needed for changing calculation parameters in numerical simulation, grid division is complex and tedious, high-fidelity data cannot be directly included, and initial parameters in experimental research are uncertain.

The invention discloses a negative pressure leakage testing machine for detecting the sealing performance of a steel drum, and relates to the technical field of negative pressure leakage testing machines, the negative pressure leakage testing machine comprises a leakage testing machine body, the top of the leakage testing machine body is slidably provided with an air tightness detection device, and a steel drum to be detected is placed in the leakage testing machine body. According to the negative pressure leakage testing machine for detecting the sealing performance of the steel drum, the upper sealing air bag and the lower sealing air bag expand and make contact with an inlet of the to-be-detected steel drum, sealing of the to-be-detected steel drum is completed, the accuracy of sealing performance detection of the to-be-detected steel drum is improved, the to-be-detected steel drum is pressed into water in the water tank, and the sealing performance of the to-be-detected steel drum is improved. The leakage point continuously generates bubbles, so that the position of a defect point of the to-be-detected steel drum is conveniently determined, the to-be-detected steel drum is vibrated through contact between the pressing plate and the to-be-detected steel drum, an air film attached to the leakage point is loosened through vibration, bubble separation is promoted, bubbles are conveniently generated, and the detection accuracy is improved. Therefore, the defect points of the to-be-detected steel drum can be determined more quickly.

The invention provides an atmosphere furnace surge flask bubble monitoring system and method based on machine vision. The image acquisition module is used for acquiring a multi-dimensional video image in a target area, wherein the multi-dimensional video image comprises a motion state of bubbles in liquid, real-time data reading on an atmosphere furnace digital display controller and an accurate indication condition of a gas cylinder pressure reducing valve gas pressure pointer display area; the data processing unit carries out fine processing on the acquired video image; the characteristics of bubbles are highlighted; the boundary of the bubble is accurately determined; calculating the flow velocity of the bubbles by using an optical flow method, and obtaining an accurate result by analyzing the position change of the bubbles between adjacent frames; counting the number and size of bubbles based on contour analysis; and the analysis and alarm module performs correlation analysis on the bubble parameters and the environmental parameters, generates a relation curve, presets a threshold value, and triggers alarm when the parameters are abnormal. According to the invention, real-time dynamic detection and deep analysis of parameters of bubbles in the surge flask of the atmosphere furnace can be accurately realized.

The invention relates to the technical field of vapor-liquid two-phase cooling, and discloses a vapor-liquid two-phase cooling method and system based on phase change immersion. The method comprises the following steps: acquiring a multi-modal monitoring data set of a target cooling system; performing spatial gradient feature extraction, transient response analysis and motion mode analysis processing on the data to obtain a temperature field feature matrix, a thermal load fluctuation vector and a bubble dynamics feature sequence; performing multi-physical field coupling processing on the features to generate a fusion cooling state feature set; a pre-configured multi-phase flow simulation model is called to carry out cooling efficiency evaluation, and a cooling efficiency index set containing the correlation mapping relation between the working medium flow characteristics and the heat exchange efficiency is generated; performing collaborative anomaly traceability processing based on the mapping relationship, and generating a phase change anomaly traceability report for identifying an abnormal boiling region and a working medium flow defect mode; and generating a cooling parameter self-adaptive control strategy according to the traceability report, and sending the cooling parameter self-adaptive control strategy to a cooling control system to execute real-time parameter adjustment.

The invention belongs to the technical field of fused salt heat storage tank leakage detection, and discloses a device for fused salt heat storage tank leakage detection and a working method thereof. According to the device for detecting the leakage of the fused salt heat storage tank, a rotary supporting assembly is rotatably mounted on a base, and an equipment mounting frame is further mounted on the base; a plurality of spray heads and a plurality of cameras are arranged on the equipment mounting rack; one end of the detection cylinder is provided with a detection pipe and an air inlet pipe, and the other end is provided with an air outlet; one end provided with the air outlet is provided with a distance sensor, and the other end provided with the air outlet is further provided with a piston plate through an elastic assembly; the control unit is used for controlling rotation of the rotary supporting assembly, controlling opening and closing of the spray head, obtaining data collected by the distance sensor and obtaining data collected by the camera. According to the technical scheme, bubble visual monitoring and pressure change monitoring are combined, and the sensitivity and accuracy of leakage detection are improved.

The gradually-expanded printed circuit board type heat exchange inner core comprises a cover plate, a bottom plate, a cold side plate layer and a hot side plate layer, a cold side gradually-expanded channel is of a flow channel structure with the width gradually expanded, and the sectional area of a flow channel dynamically adapts to gas-liquid phase change and volume change. And pressure drop fluctuation and bubble aggregation caused by gas phase expansion are reduced, the shunt channels and the divergent channels are arranged in parallel, an inner wall porous structure is combined, medium distribution uniformity is optimized through graded distribution and surface wettability enhancement, and the flow stability is remarkably improved. The turbulent flow ribs are arranged in the heat exchange channel on the heat side, combination of heterogeneous working media such as supercritical CO2-water and liquid hydrogen-liquid oxygen is supported by destroying a heat boundary layer, inducing turbulent flow and strengthening convective heat exchange and phase change heat transfer, the heat exchanger can improve the heat exchange efficiency while reducing pressure drop, compactness, reliability and wide working condition adaptability are considered, and the heat exchange efficiency is improved. Two-phase flow optimization and efficient heat exchange are achieved, and the extreme heat exchange requirements in the fields of aerospace, new energy and the like are met.

The utility model discloses a vibrating structure for shield segment pouring, and belongs to the technical field of shield segments, the vibrating structure for shield segment pouring comprises a support frame and support rods, the lower surface of the support frame is fixedly connected with the support rods, a support plate is fixedly connected between the support rods, and the support plate is fixedly connected with the support frame. A lower mold is fixedly connected to the upper surface of the supporting plate, an upper mold is movably connected to the outer surface of the lower mold, a vibrating assembly is arranged on the outer surface of the upper mold, and a mold separating and locking assembly is arranged between the upper mold and the lower mold; a cam is driven to rotate through two sets of driving motors, a vibrating rod penetrates into concrete in a hole groove through mutual cooperation of the cam, a connecting plate and a vibrating rod, effective vibrating operation is carried out, the limitation that a traditional vibrating structure only vibrates concrete on the surface layer of a mold is avoided, and the vibrating efficiency is improved. Therefore, the vibrating rod can more effectively excite bubbles at the bottom, and the discharging efficiency of the bubbles is improved.

The invention relates to the technical field of bubble generation, and provides a micro-nano bubble stable generation method and a micro-nano bubble stable generation device.The method comprises the steps that a liquid-phase working medium flows through a Venturi tube, so that negative pressure is formed in the throat portion of the Venturi tube, a gas-phase working medium is sucked in, preliminary mixing is conducted, and a gas-liquid mixture is obtained; the gas-liquid mixture is tangentially guided into a rotary-cut type excitation cavity to drive a free rotating impeller in the rotary-cut type excitation cavity to rotate, and fine shearing is conducted on bubbles; the gas-liquid mixture obtained after fine shearing is guided into a diffusion and flow stabilization cavity for speed reduction and flow stabilization; the gas-liquid mixture subjected to flow stabilization flows through a nanocrystallization foam stabilizing unit, a plurality of parallel micro-channels are arranged in the nanocrystallization foam stabilizing unit, and the surface of the inner wall of each micro-channel is covered with a layer of nanofiber net-shaped structure; and carrying out final nanocrystallization and interface stabilization treatment on the gas-liquid mixture through a nanofiber net structure, and outputting stable micro-nano bubble liquid. The problems of poor stability, short service life and high energy consumption of the traditional technology are solved.

A vertical bubble machine, includes a housing, an air blowing component, a film forming component, a film scraping component, a pumping component and a liquid storage container; a mounting cavity is arranged in the housing, the film forming component is fixed in an opening of the mounting cavity, a plurality of bubbling holes are arranged on the film forming component, a liquid outlet is arranged on the film forming component, the film scraping component is rotatably assembled above the film forming component, the film scraping component is used for picking up bubble water from the liquid outlet and then sweeping past the plurality of the bubbling holes to form bubble films; the air blowing component is arranged in the mounting cavity and is located below the film forming component, an air outlet of the air blowing component faces to the film forming component.

The utility model discloses a sparkling water machine, which belongs to the field of household electric appliances, solves the problems of splashing of water discharged from the sparkling water machine and unstable flow of the water discharged from the sparkling water machine, and adopts the technical scheme that the sparkling water machine mainly comprises a water supply component, a gas supply component, a mixing cavity and a gas-liquid separator, the gas supply assembly is communicated with the mixing cavity and supplies gas to the mixing cavity, the gas-liquid separator is provided with a gas-liquid separation cavity, a water inlet, a water outlet and an exhaust port, the gas-liquid separation cavity is communicated with an outlet of the mixing cavity through the water inlet, bubble water in the gas-liquid separation cavity is discharged through the water outlet, gas is discharged through the exhaust port, and the exhaust port is provided with a pressure release valve. A baffle for preventing high-pressure bubble water flowing in from the water inlet from rushing open the pressure release valve is arranged in the gas-liquid separation cavity; and the baffle is blocked between an impact path of the high-pressure bubble water and the pressure release valve. The utility model is mainly used for preventing the water outlet from splashing in the process of discharging bubble water, and improving the stability of the water outlet flow.

A cooling system, comprising: - a first cooling circuit (10), the first cooling circuit having a first coolant pump (12); - a second cooling circuit (20), the second cooling circuit having a second coolant pump (22); - an expansion tank (30), the expansion tank being provided with an expansion chamber (31) for accumulating coolant, wherein the expansion chamber is connected to the second cooling circuit (20) so as to allow the expansion chamber to receive coolant from the second cooling circuit; and - a degassing device (40), the degassing device being arranged in the first cooling circuit for separating bubbles from the coolant circulating therein. The degassing device (40) is located at a position lower than the expansion tank (30) and is connected to the expansion chamber (31) via a static pipeline (5) so as to allow the bubbles separated from the coolant in the degassing device to migrate upward in the static pipeline towards the expansion chamber.

The utility model relates to the technical field of powder injection, and discloses a device for solving air trapping caused by non-injection of metal powder, which comprises a lower die, an upper die is clamped at the top of the lower die, a connecting seat is fixedly connected with the top of the upper die, and first injection pipes are communicated with two ends of the connecting seat. A first injection pipe is fixedly installed in the upper mold, a second injection pipe is fixedly installed in the upper mold, the first injection pipe communicates with the second injection pipe, a fixing base is arranged in the second injection pipe, a stirring helical ribbon is fixedly connected to the top of the fixing base, and a pressing plate is fixedly connected to the top of the stirring helical ribbon; and the top of the pressing plate is rotationally connected with the top of the inner wall of the second injection pipe, and a driving mechanism is embedded into the connecting base. According to the device for solving the problem of air trapping during non-injection of the metal powder, the injected flowing metal powder is stirred to be more uniformly distributed in the second injection pipe and the mold, gaps and bubbles among powder particles are reduced, and the air trapping phenomenon is prevented.

The invention discloses an intelligent management method and system for a distributed liquid cooling energy storage system. The method comprises the following steps: identifying a sound wave reflection signal of which a sound wave reflection source type is a bubble; determining a bubble static gathering area based on the positions of the bubbles and the distance between the bubbles; calculating a fluid retention degree index in the bubble gathering area, and judging the fluid retention degree in the bubble gathering area; judging whether a local overheating risk exists in the bubble static gathering area with the serious fluid retention degree or not; predicting the temperature, bubble size and data of a bubble static aggregation area in a future preset time period, and determining a time point of a local overheating risk; and evaluating and optimizing the accuracy of the bubble size prediction model, the fluid retention degree index formula and the local overheating risk evaluation model. Through the technical method provided by the invention, the accuracy of bubble monitoring, the timeliness of overheating risk assessment and the optimization efficiency of the cooling effect in the liquid cooling energy storage system are remarkably improved, the service life of equipment is prolonged, and the maintenance cost is reduced.

The present invention relates to the technical field of steel metallurgy process simulation, and specifically relates to a simulation method for particle motion and interaction behavior within a continuous casting mold. The simulation method comprises the following steps: acquiring mold parameters and establishing a model; performing fluid domain volume extraction and structured mesh division on the model; importing the mesh model into simulation software and performing iterative solution; establishing injection points for argon bubbles and inclusions within the mold, compiling and calculating the flotation removal of argon bubbles and inclusions at a steel-slag interface, the capture thereof at a solidification front, and collision-aggregation, and performing coupled computation; and post-processing the simulation results to obtain the flow field, temperature field, solidified-shell distribution, and discrete-phase motion behavior within the mold at different time points. The method of the present invention enables analysis of the motion and interactions of discrete-phase particles such as argon bubbles and inclusions within the mold, thereby accurately predicting the distribution of the particles in the molten steel and the solidified shell.

The invention relates to the technical field of metal die-casting forming, and discloses a vacuum die-casting method for a high-reliability aluminum alloy motor end cover, which comprises the following steps: carrying out acoustic levitation purification treatment on an aluminum alloy melt; detecting the acoustic purity of the purified melt on line by adopting an acoustic characteristic sensing device; feeding the melt into a mold cavity for vacuum die-casting filling; and according to the detection result of the acoustic purity, an electromagnetic coil preset at the hot spot area of the mold is controlled in a feedforward mode, and magnetic field induction partition solidification of the hot spot area is achieved. According to the method, through the synergistic effect of melt purification and solidification control, micro bubbles and inclusions in the melt are removed through acoustic levitation purification firstly, then accurate magnetic field induction partition solidification is conducted on a hot spot area through feedforward control based on melt quality real-time data, formation of microscopic and macroscopic defects is effectively inhibited, and the quality of the melt is improved. The manufactured motor end cover is high in internal density and good in mechanical property and air tightness, and the product reliability is remarkably improved.

The invention discloses a vibrating production device for concrete prefabricated part machining, and relates to the technical field of concrete prefabricated parts, the vibrating production device comprises a vibrating mechanism and translation sliding blocks mounted on the two sides of the bottom of the vibrating mechanism, a formwork fixing mechanism is arranged at the bottom of the vibrating mechanism, and clamping sliding plates are arranged on the two sides of the formwork fixing mechanism; the vibrating mechanism comprises a vibrating sliding disc, a longitudinal threaded sleeve is fixedly installed on the top of the vibrating sliding disc, electric telescopic rods are fixedly installed on the periphery of the bottom of the vibrating sliding disc, a supporting chassis is fixedly installed at the bottoms of the electric telescopic rods, and connecting ropes are fixedly installed on the periphery of the bottom of the supporting chassis. When the lifting frequency of the light foam disc and the detection rod is reduced, it shows that bubbles in the concrete are discharged, at the moment, the vibrating rod can be pulled out for concrete vibrating in other areas, and the situation that the quality of the formed concrete is affected due to concrete segregation caused by excessive concrete vibrating is avoided.

The invention discloses a cosmetic glass bottle surface polishing method and system, and the method comprises the steps: carrying out gradient mesh abrasive composite modification on a sand leather base material, and carrying out three-dimensional cutting according to the surface curve contour of a glass bottle through a laser cutting technology to form a composite sand leather polishing piece; the composite sand leather grinding piece is assembled at the executing end of a six-axis linkage mechanical arm, partition differentiated grinding is carried out according to the surface pollutant distribution density image recognition result, and a glass bottle rough blank obtained after preliminary grinding is obtained; performing synchronous purging on the surface of the glass bottle rough blank by adopting inert gas flow with a micro-bubble generation device, and controlling the composite sand leather polishing piece to perform micro-vibration at the same time, so as to obtain a glass bottle semi-finished blank; and the glass bottle semi-finished blank is placed in a sealed cavity to be sprayed, final polishing is carried out in cooperation with pulse type ultrasonic vibration, and a cosmetic glass bottle finished product is obtained. According to the embodiment of the invention, high-precision grinding of the curved surface of the glass bottle can be realized, and the surface cleanliness and the gloss uniformity are improved.

The invention discloses a quantitative recognition device for the number and size of bubbles at a rotating impeller of a multiphase pump. The quantitative recognition device comprises a two-phase flow experiment system, the multiphase pump, a high-speed camera, a light source and the like. The preprocessing and data analysis system and the deep learning system are arranged in the computer; the two-phase flow experiment system and the image acquisition system are electrically connected with the computer through lines. The invention further discloses a quantitative recognition method for the number and size of the bubbles at the rotating impeller of the multiphase pump. According to the method, the problems of low blistering recognition precision, low efficiency and large error caused by the existing manual measurement method are solved, and a reference method is provided for exploring the influence of gas distribution at the impeller in the multiphase pump on pump operation and optimizing design of the multiphase pump.

The invention relates to an integrated circuit sound scanning detection device and an integrated circuit carrier thereof, and belongs to the technical field of integrated circuit detection. The integrated circuit carrier comprises a fixed frame and a movable frame, the movable frame is located in the fixed frame and is in sliding fit with the fixed frame, and one end of the movable frame is connected with a vibration mechanism for driving the movable frame to do reciprocating linear motion. A positioning mechanism for positioning the integrated circuit is arranged on the movable frame and comprises a supporting surface for supporting the integrated circuit; the movable frame is provided with a plurality of water spraying channels, and the water outlet direction of the water spraying channels is parallel to the supporting face and perpendicular to the linear motion direction of the movable frame. The integrated circuit sound scanning detection device comprises the integrated circuit carrier. According to the method, bubbles on the surface of the integrated circuit can be removed, gas in tiny holes in the integrated circuit can be removed, the situation that new bubbles are generated due to the fact that the gas in the integrated circuit is exhausted in the scanning process is avoided, and therefore the detection precision is guaranteed.

The invention provides an oil level monitoring and leakage early warning system for a hydraulic system of a dredger, which relates to the technical field of hydraulic system monitoring and comprises a hydraulic oil tank, an actuating mechanism assembly connected with the hydraulic oil tank through a pipeline, a data processing unit, a multi-source sensing module, an early warning module and a control module, the multi-source sensing module comprises an integrated liquid level sensor, an actuating mechanism displacement sensor group, an attitude sensor and a temperature sensor, and is used for collecting hydraulic oil level, displacement of each actuating mechanism, ship trim / heeling angle and oil temperature data in real time; the dynamic compensation calculation module is connected with the data processing unit; and the intelligent early warning module is connected with the data processing unit. Normal change and leakage can be distinguished by calculating the oil level change caused by the action of the executing mechanism and the posture of the ship, early warning is conducted in time, pollution and economic losses are prevented, and the situation that when workers inject hydraulic oil, the hydraulic oil splashes, bubbles are generated, and a hydraulic element is damaged can be prevented.

The invention provides a stock solution sub-packaging device and a sub-packaging method.The stock solution sub-packaging device comprises a sub-packaging support, a plurality of trays symmetrically arranged on the two sides of the sub-packaging support, a main pipeline arranged on the sub-packaging support and weighing sensors arranged on the two sides of the bottom of the sub-packaging support; branch pipelines communicated with the liquid separation bag are symmetrically arranged on the two sides of the main pipeline, the main pipeline is communicated with the stock solution storage device, bubble sensors are arranged at the two ends of the main pipeline and used for detecting bubbles in the main pipeline, and stock solution to be subpackaged in the stock solution storage device sequentially passes through the main pipeline and the branch pipelines and then is contained in the liquid separation bag. The weighing sensors are used for obtaining stress changes of the bottoms of the two sides of the subpackaging support, the position of the tray relative to the subpackaging support is fixed, the position of the liquid separation bag relative to the tray is fixed, and the amount of the stock solution subpackaged into the liquid separation bag is calculated through the stress changes; the stock solution split charging device provided by the invention is high in efficiency and good in split charging precision.