7853 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 discloses an aluminum electrolytic capacitor state evaluation method and device, and the method comprises the steps: carrying out the frequency scanning measurement of an electrolyte and oxidation film interface, and obtaining the change data of an interface polarization current phase angle along with the frequency; measuring fluid dynamic characteristics of the electrolyte according to the polarization characteristic parameters, and detecting micro-flow response characteristics; according to the flow distribution data and the evolution data, applying a voltage sequence to carry out ion migration kinetic analysis; carrying out microstructure analysis in a preset temperature change process according to the ion distribution characteristics; and according to the structure change data and the dielectric response data, analyzing the change characteristics of the molecular level, the bubble distribution and the overall performance to obtain a stability evaluation result. According to the technical scheme, through multi-dimensional analysis of the interface polarization characteristic, the fluid dynamic characteristic, the ion migration dynamics and the microstructure change of the electrolyte, effective detection of bubbles and layering phenomena in the electrolyte is realized, and accurate evaluation of the performance state of the capacitor is facilitated.

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 discloses a steel structure weld defect detection device and method.The steel structure weld defect detection device comprises a U-shaped base, a transmission roller, an L-shaped frame, an ultrasonic probe, a liquid spraying mechanism and a display device, the transmission roller is arranged on the U-shaped base and used for supporting and rotating a steel pipe, and the L-shaped frame fixes the ultrasonic probe so that the ultrasonic probe can make contact with the surface of a steel pipe weld for real-time detection; a liquid spraying mechanism uniformly sprays water-based foam liquid on the surface of the welding seam, an air spraying device blows air into air holes in the welding seam, so that air enters the foam liquid through the air holes to form stable air bubbles, and a cleaning mechanism wipes the residual foam liquid on the surface of the welding seam to ensure that the surface is clean and tidy; according to the method, high-precision detection of the welding seam of the steel pipe is achieved, the automation degree of operation is high, manual intervention is reduced, the detection efficiency and accuracy are improved, and the continuity of detection and follow-up evaluation work can be improved.

The invention relates to a method and system for monitoring the number and radius of bubbles in a sieve-plate tower, and the process is as follows: dividing two frequency bands of a bubble generation sound production area and a bubble breaking sound production area according to the frequency in an audible sound range [20-20,000] Hz; sound sensors are installed between the sieve-plate towers and / or in the middle of the height of a liquid layer, and sound signals of fluid in the towers in the driving process are collected; the collected sound signals are preprocessed; obtaining the dominant frequency of each sound wave pulsation in the sound signal by using a fast Fourier transform algorithm, determining whether the dominant frequency belongs to a bubble generation sound production area or a bubble breaking sound production area according to the frequency band in which the dominant frequency is located, and substituting the dominant frequency into a corresponding correlation formula to determine the radius of the bubble; and counting the number of pulse peaks in the bubble generation sound production area and the bubble breaking sound production area within the sample time, and respectively obtaining the generation number of bubbles and the breaking number of bubbles. And real-time monitoring of the number and size of bubbles in the sieve-plate tower in a driving state is realized.

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 provides a slit type bubble electrostatic spinning device assisted by hot air flow. The slit type bubble electrostatic spinning device comprises a hot air flow channel, a slit type metal solution channel, a bubble pipe and an electrostatic generator. The hot air flow channel and the slit type metal solution channel are circular truncated cone-shaped pipelines formed by gradually narrowing inner and outer pipes; the pipe diameter of an inner pipe of the hot air flow channel is the same as that of an outer pipe of the slit type metal solution channel; the slit type metal solution channel penetrates through the inner pipe of the hot air flow channel and is fixedly attached to the inner pipe of the hot air flow channel, the bubble pipe extends and is fixed to the inner pipe of the slit type metal solution channel, and the electrostatic generator is connected with the slit type metal solution guide pipe through a wire. The arrangement of polymer molecular chains in the solution is improved through the slit type metal solution channel, high-speed hot airflow is provided by the circular-truncated-cone-shaped hot airflow channel to upwards support bubbles from the periphery and assist the polymer molecular chains to be evenly distributed in parallel with the surfaces of the bubbles, and the enhanced nanofibers are prepared by improving the internal structure of the nanofibers.

The invention discloses a method and a system for simulating bubble motion in transformer oil by considering multi-physics field coupling, and the method comprises the steps: fusing an energy equation into a mass conservation and momentum conservation equation, and constructing a multi-physics field model which considers the coupling of an electric field, a thermal field and a flow field; introducing a k-epsilon turbulence model into the multi-physics field model to obtain a first optimized multi-physics field model; the k-epsilon turbulence model is an oil flow model in a large transformer; introducing a phase field method into the first optimized multi-physics field model to obtain a second optimized multi-physics field model; various forces of bubble motion are introduced into the second optimized multi-physics field model, and a third optimized multi-physics field model is obtained; and performing parameter solving on the third optimized multi-physical field model to obtain the movement process of the bubbles in the transformer oil. According to the invention, a multi-physical field model considering coupling of an electric field, a thermal field and a flow field is constructed, and comprehensive and accurate simulation of bubble motion in transformer oil is realized.

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 a gas dissolving device for generating micro-nano bubbles by using a gas-liquid double-high-pressure jet method, which comprises a venturi tube body for generating micro-nano bubbles, a water inlet pipe is mounted at one end of the venturi tube body, a gas inlet pipe capable of preventing liquid from flowing back is mounted at a throat pipe of the venturi tube body, and a gas outlet pipe capable of preventing liquid from flowing back is mounted at the other end of the venturi tube body. A cutting blade for crushing and refining micro-nano bubbles is mounted in the Venturi tube body, and a detachable porous membrane is also mounted in the Venturi tube body. When liquid flows through the contraction section of the venturi tube at a high speed, the flow speed is increased, the pressure is reduced, negative pressure is generated, external gas is sucked into the liquid under the suction of the negative pressure, then the liquid and the gas are fully mixed in a pipeline and broken into micro-nano bubbles, and the micro-nano bubble generator is simple in structure, low in cost, capable of continuously working and capable of effectively improving the production efficiency. And the generated micro-nano bubbles can meet the requirements of particularly fine occasions.

The invention discloses a manufacturing method of a wireless charging FPC (Flexible Printed Circuit), which comprises the steps of blanking, drilling, black hole, copper plating, dry film pasting, exposure, etching, lead electroplating, secondary copper plating, copper laying, blue film pasting, protective film pressing, appearance inspection and electrical performance test. Before lamination, the protective film is subjected to vacuum false pressing, four-opening lamination is used during lamination, and sectional control is adopted in the lamination process, so that a uniform and stable high-temperature and high-pressure environment can be provided within a short time, and glue between the protective film and the FPC is rapidly cured; in the laminating process, the pressure is uniformly distributed on the surface of the FPC, so that the protective film and the FPC can be tightly attached, the defects of bubbles, wrinkles and the like are avoided, the flatness of the surface of the FPC is ensured, the quality and the reliability of the product are improved, and the generation of the bubbles and the wrinkles can be effectively avoided by adopting sectional pressure control.

The invention relates to the field of theoretical calculation and numerical simulation of ship structure protection and cavitation, in particular to a bubble pulsation initial condition inversion method and system based on a bubble energy loss target. Inputting characteristic parameters and energy parameters of the bubbles, and determining a target variable value of inversion calculation; taking a bubble maximum volume moment as an initial calculation moment, randomly giving a bubble internal pressure value at the bubble maximum volume moment, and determining a bubble initial condition in inversion calculation; reversely carrying out time integration on the basis of a compressible spherical bubble pulsation equation to obtain bubble characteristic parameters at zero moment; calculating a time calendar evolution process of a bubble radius by taking a bubble characteristic parameter obtained by reverse time integration as a bubble pulsation initial condition, and judging whether the energy loss of the bubble reaches a target value or not; and adjusting the bubble internal pressure value at the moment of the maximum volume of the bubbles for re-calculation, solving a bubble radius time calendar process, and recording bubble characteristic parameters after reaching an expected target as a new bubble pulsation initial condition. The method is used for solving the problem that the initial bubble pulsation condition is difficult to determine in the existing bubble dynamics theory and numerical calculation.

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 present invention relates to the technical field of pipeline installation, specifically, pipeline installation equipment based on BIM technology, including a hoisting mechanism that can be detachably suspended from a tower crane hook, the hoisting mechanism including two hoisting platforms, electric hoists installed inside both ends of the hoisting platforms, a rope 1 for traction transmission outside the electric hoist, a rope 2 detachably fixed below two adjacent ropes 1, and a plurality of steel balls fixed in series on the outside of one of the ropes 2. In the present invention, whether two pipelines are at the same height is judged by observing whether the bubble of the level on the traction rope is in the middle position, which is convenient for construction personnel to quickly identify whether the pipeline is in the installation position, and rope 1 is respectively wound and released by two electric hoists, so that rope 2 is supported with steel balls to the gap between the bottom of the pipeline and the bottom of the buried trench, so as to prevent the pipeline interface from tilting due to the low terrain at the bottom of one end of the pipeline and generating shear force, which is beneficial to ensure the safety of the pipe mouth after the pipeline is docked.

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 relates to the technical field of defoaming stirring, and discloses a defoaming stirring barrel for flotation and a using method thereof.The defoaming stirring barrel comprises a round barrel, a mounting frame is fixedly mounted at the top of the round barrel, a driving motor is fixedly mounted at the top of the mounting frame, a rotating shaft is rotatably mounted on the mounting frame, and the rotating shaft penetrates through the mounting frame; the bottom end of the rotating shaft is rotatably connected with the inner wall of the bottom of the barrel, an output shaft of the driving motor is fixedly connected with the rotating shaft, the defoaming device further comprises a defoaming mechanism, the defoaming mechanism comprises a rectangular groove formed in the rotating shaft, and the rectangular groove is slidably sleeved with a circular sliding plate. In the rotating process of ascending and descending of the defoaming teeth, bubbles on the slurry surface and bubbles in vortexes including slurry can be effectively eliminated, the foam eliminating effect is improved, and the situation that due to the fact that the bubbles are concentrated at the vortexes and on the liquid surface, the bubbles overflow too much and concentrate is discharged out of a barrel, waste is caused, and the concentrate sinks again is avoided.

To provide a water discharge nozzle and a shower head capable of suppressing the loss of generated fine bubbles and injecting the fine bubbles.SOLUTION: A water discharge nozzle according to the present invention comprises a substantially cylindrical housing having a flow channel formed therein, a fine bubble generating mechanism disposed in the flow channel, and a dispersion plate provided at the outflow side end of the flow channel, wherein the above fine bubble generating mechanism consists of a first swirling flow forming plate having a plurality of inclined holes, a cylindrical bubble generating member including an aperture with a small inner diameter in the middle region in the longitudinal direction, and a second swirling flow forming plate having the plurality of inclined holes, and the fine bubble generation mechanism is arranged so that the water flow passing through the second swirling flow forming plate directly reaches the dispersion plate.SELECTED DRAWING: Figure 1

The invention discloses a cable detection device, and belongs to the field of cable detection. A cable detection device comprises a detection box, a cover plate is arranged on the detection box, conductive liquid is poured into the detection box, and the cable detection device further comprises a conveying assembly used for heating a cable. The first guide pipe is communicated with a second guide pipe used for blowing air to the cable, and a lifting assembly is arranged between the second guide pipe and the detection box; the bottom of the lifting assembly is located in the detection box and is connected with a clamping assembly used for extruding the cable. According to the invention, after the crack of the cable is determined in the conductive liquid, the cable is inflated, and bubbles are generated in the conductive liquid, so that the quality problem of the cable is detected, and the specific defect position can be determined; by means of the device, the flaring area of the damaged part of the heated cable is increased in the extrusion process, it is better guaranteed that gas can be discharged from the damaged part, bubbles in conductive liquid are more obvious, and detection effectiveness is guaranteed.

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 a mold exhaust structure, system and method for an in-mold coating process, and aims to remarkably reduce the phenomena of bubbles and air trapping and improve the appearance quality and functionality of a product by accurately controlling gas exhaust and fluid filling. The exhaust structure comprises a coating cavity, a feeding device, a first flow channel, an exhaust assembly, a second flow channel and a transition flow channel. The circulation sectional area of the second runner is smaller than that of the coating cavity to increase fluid flow resistance; the transition flow channel is designed to be arc-shaped, the included angle formed by the tangent line and the vertical direction of the transition flow channel is gradually increased, and the gas exhaust path is optimized. In addition, the system integrates a man-machine interaction unit, a control unit, a first pressure sensor and a second pressure sensor. And when the detection value of the second pressure sensor is larger than 0 bar, the exhaust assembly is closed, and a pressure maintaining and filling stage is started until coating is completed.

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 relates to a return-air-free gas quenching device and a perovskite thin film production line, and the device comprises a frame body mechanism which comprises a first supporting body and a support movably connected to the first supporting body along a first direction; the driving mechanism comprises a second supporting body arranged on the support and a rotating part movably connected to the second supporting body in the second direction, and the plane where the first direction is located is perpendicular to the plane where the second direction is located; the air knife mechanism comprises an air knife rest connected to the output end of the rotating part, an air knife body arranged on the air knife rest, an air baffle movably arranged on the air knife rest in the second direction and an adjusting assembly arranged on the air knife rest and used for adjusting the air baffle to move in the second direction. Through the arrangement, the problems of non-uniform crystallization, cracks, bubbles and the like caused by return air in a flexible roll-to-roll perovskite solar cell functional layer coating process are solved, and uniform crystallization and a high-quality coating layer are realized.

The invention relates to the technical field of hydrogen fuel cells, in particular to a porous channel heat dissipation structure matched with a bipolar plate of a hydrogen fuel cell, the porous channel heat dissipation structure comprises a sealing outer frame and a bipolar plate body, the interior of the sealing outer frame is fixedly connected with the outer wall of the bipolar plate body, the bipolar plate body comprises an anode single plate and a cathode single plate, a working gas inlet hole is formed in the outer wall of the top of the bipolar plate body; the cooling device has the beneficial effects that uniform mixing of ethylene glycol and the cooling liquid is further improved by stirring the cooling liquid, meanwhile, the flowing speed and turbulivity of the cooling liquid can be increased by stirring the cooling liquid, heat can be taken away more quickly by the cooling liquid, slow flowing of the cooling liquid in the cooling tank is avoided, and the cooling effect is improved. Correspondingly, the flow velocity of the cooling liquid is increased through the arrangement of the rotating blades, so that the effect that the cooling liquid drives heat on the bipolar plate body is improved, and bubbles generated by ethylene glycol can be broken through the shearing acting force of the rotating blades and are converted into smaller bubbles.