54results about How to "The experimental data is accurate" patented technology

The utility model relates to the technical field of cable equipment, in particular to extrusion equipment for flame-retardant low-voltage cable test, which comprises an extruder and a circulating workbench positioned at a discharge end of the extruder, a die head is arranged on the extruder, a part of the die head extends to the circulating workbench, a cable core is movably arranged on the circulating workbench, and the cable core is connected with the extruder. The cable core penetrates through the die head, the cable core is connected end to end and arranged in the die head in a sliding mode, the circulating workbench is further provided with a cooling device and a stripping device, and the cable core penetrates through the cooling device and the stripping device. An observation area and a comparison area are sequentially arranged on the circulating workbench close to the cooling device, and the cable core penetrates through the observation area and the comparison area; according to the utility model, the test result can be visually seen, the accuracy and stability of the test can be ensured, the test times can be furthest increased by the cyclically repeated cable core, and the test data can be ensured to be more accurate.

The invention provides a micro-fluidic chip for capturing and fixing nematodes in a unified body position and a preparation method, and relates to the technical field of model animal nematode research, the micro-fluidic chip comprises a square structure, an adsorption channel, a sample inlet hole and a sample outlet hole, the square structure is internally provided with a main channel, the main channel is communicated with the sample outlet hole and the sample inlet hole, and the adsorption channel is communicated with the sample inlet hole and the sample outlet hole. The main channel is communicated with the adsorption channel, one side, deviating from the adsorption channel, of the main channel of the square structure is provided with two nematode U-turn single channels, and the number of the nematode U-turn single channels is two; the two nematode U-turn single channels are located between the sample inlet hole and the adsorption channel and between the sample outlet hole and the adsorption channel respectively, and the nematode U-turn single channels are used for being communicated with a 40 KPa negative pressure source. In the use process of the micro-fluidic chip, nematodes can be firmly adsorbed and fixed, and the time can be as long as 2 hours; during adsorption, nematode activity is less affected. And long-term imaging analysis, precise microinjection and the like can be implemented.

The present invention relates to a fully automatic drop hammer impact testing machine capable of batch testing at the same time, belonging to the technical field of testing equipment, and a batch testing mechanism is used to simultaneously test the impact resistance of multiple test blocks. When the DIC system detects that an impact cycle has ended, the signal is transmitted to the PLC controller and the computer, which then drives the stepper motor to automatically rotate the load-bearing plate to a preset angle to impact the next test piece. The two impact cycles are seamlessly connected and do not require manual debugging of the equipment. This reduces the waste of time and human resources and increases test efficiency and safety.

The application is a kind of simulation field drilling experimental device and experimental method for hydrate drilling fluid, which comprises a multilayer experimental cylinder, a water depth environment simulation device, a drilling running device, a drilling fluid feeding device, a slurry returning device and a data acquisition system. The multilayer experimental cylinder comprises at least two cylinder sections, and each cylinder section is independently configured with rock layers to simulate various formation environments. The water depth environment simulation device injects pressure into the multilayer experimental cylinder to simulate the environmental pressure of water depth. The drilling running device simulates downhole drilling. The drilling fluid feeding device is used to circulate and inject drilling fluid into the multilayer experimental cylinder through a drill pipe and a drill bit. The slurry returning device is used to circulate and return the drilling fluid to the drilling fluid feeding device and evaluate the hydrate content in the returned fluid. The application simulates the temperature and pressure environment of offshore gas field with low temperature and high pressure in the laboratory experimental device, and sets different rock layer compositions and experimental conditions of hydrate content, which can optimize the formula of drilling fluid and reduce the risk of hydrate generation during drilling.

The application discloses a fracturing fluid viscosity reduction simulation experiment system based on ultrasonic cavitation effect, which comprises a cavity, an ultrasonic cavitation mechanism, a laser measuring mechanism, an infrared observation mechanism, a loading mechanism and a data acquisition computer, the ultrasonic cavitation mechanism comprises an ultrasonic wave driving controller and an ultrasonic wave transducer, and the laser measuring mechanism comprises a laser driving power supply, a laser emitter and a photosensitive sensor. The application also provides a fracturing fluid viscosity reduction simulation experiment method based on ultrasonic cavitation effect, which comprises the following steps: step S1, establishing the fracturing fluid viscosity reduction simulation experiment system based on ultrasonic cavitation effect, and supplying gas to the cavity to pressurize; step S2, emitting ultrasonic waves, starting the laser measuring mechanism and the infrared observation mechanism, and transmitting data to the data acquisition computer; step S3, data processing; and step S4, setting multiple groups of control experiments, which has the advantages of joint observation, novel conception, ingenious design idea and accurate experimental data.

The invention discloses an experimental device for a transverse compression experiment of a superconducting CORC cable. The experimental device comprises an experimental platform; the supporting plate is mounted on the experimental platform; the lead wire compression assembly is mounted below the supporting plate, is externally connected with an electric wire, and is used for clamping the superconducting CORC cable, electrifying the superconducting CORC cable and applying pressure to the superconducting CORC cable; the low-temperature medium container is installed on the experiment platform in a lifting mode, located under the lead compression assembly and used for cooling the superconducting CORC cable; and the servo motor is mounted above the supporting plate, is connected with the lead compression assembly and is used for providing power for the lead compression assembly. The lifting low-temperature medium container can automatically control the device to be immersed in low-temperature liquid, manual participation is avoided, the container can be automatically lifted to enable the core part to be immersed in the low-temperature liquid, the pressure applied to the superconducting CORC cable through the servo motor is accurately controlled, errors are small, and the working efficiency is high. And the regression rule of the critical current of the superconducting CORC cable under the external compression stress can be researched more conveniently.

This utility model relates to the field of wire harness processing equipment technology, and discloses a tensile testing machine for processing automotive lamp wire harnesses that is easy to fix, including a workbench (1), a clamping assembly (2) fixedly connected to the upper surface of the workbench (1), and a moving device (3) fixedly connected to the upper surface of the workbench (1). The moving device (3) is characterized in that a limiting assembly (4) is provided on the front side of the moving device (3), and the limiting assembly (4) includes a movable block (401), the movable block (401) is provided on the front side of the moving device (3), a connector (402) is fixedly connected to the bottom of the movable block (401), and an installation part (403) is fixedly connected to the bottom of the connector (402).

The utility model discloses a wave absorbing water tank for an underwater bridge pier vibration table test. The vibration table comprises a vibration table top, a bridge pier and vibration table connecting steel plate is fixedly connected to the center of the top of the vibration table top, a bridge pier model is fixedly connected to the top of the bridge pier and vibration table connecting steel plate, supports are fixedly connected to the two sides of the top of the bridge pier model, and balancing weights are fixedly connected to the tops of the supports. The top of the vibration table top is fixedly connected with a buffer wave absorbing layer. According to the utility model, the practical problem of boundary condition interference caused by small size of the vibration table surface and insufficient length of the water tank during a deepwater bridge vibration table test can be effectively solved, and the hollow soft buffer material is arranged between the bridge pier and the vibration table connecting steel plate, so that the interference of reflected waves to a test result during the vibration table test can be relieved and even eliminated; therefore, experimental data better conforming to actual conditions can be obtained, and the experimental data are ensured to be accurate and effective.

The invention discloses a wear-resistant experiment device for spring flocking of an electric tail gate system, and relates to the technical field of spring processing, the wear-resistant experiment device comprises an experiment table and a motor, one end of the experiment table is connected with a fixing column, the fixing column is connected with a first mounting piece, the experiment table is connected with two parallel slide rails, and the slide rails are connected with a second mounting piece. The two sliding rails are connected with a sliding seat in a sliding mode, the side, close to the fixing column, of the sliding seat is connected with a second installation part, the motor is installed at the end, away from the fixing column, of the experiment table, and an output shaft of the motor is coaxially connected with a rotating disc. The spring is repeatedly stretched, in the stretching and contracting process of the spring, flocked fluff on the spring rubs with the friction material at the bottom of the movable plate, the friction condition of the spring in the actual working state is truly simulated, the authenticity and accuracy of the spring flocked wear resistance experiment are guaranteed, and experiment data are more accurate.

The utility model belongs to the technical field of petroleum engineering laboratory equipment, and discloses a portable closed quick sampling device for a rock core displacement experiment, which comprises a transparent barrel body, a liquid inlet pipe, a liquid outlet pipe, a liquid inlet pipe and a liquid outlet pipe, the micro pressure release valve is arranged at the top end of the transparent barrel body and is used for balancing internal and external pressure of the transparent barrel body; the anti-backflow quick connection structure is arranged on the outer side of the transparent barrel body and comprises a one-way valve and a quick plugging connector which are connected in sequence, the quick plugging connector is used for being directly connected with an outlet pipeline of external experimental equipment, and the drain valve is arranged at the bottom of the transparent barrel body and used for draining fluid; according to the utility model, through the arrangement of the scale and the rotatable supporting and protecting assembly, full-closed sampling is realized, volatilization, oxidation and pollution are avoided, the accuracy of experimental data is ensured, plugging and unplugging are rapid, pump closing and frequent valve operation are not needed, operation is simple and convenient, and meanwhile, a worker can perform quantitative sampling through cooperation of transparency, visibility and scales.

The invention discloses a multi-parameter online monitoring litter leaf decomposition experiment device in the technical field of soil analysis, the multi-parameter online monitoring litter leaf decomposition experiment device comprises a monitoring system and a monitoring device which are in signal connection, the monitoring device comprises a monitoring tank, a driving box is fixedly connected to the inner top wall of the monitoring tank, a driving assembly is arranged in the driving box, and a rotatable processing assembly is arranged in the monitoring tank; symmetrical supporting grooves are formed in the inner wall of the monitoring tank, weighing sensors are fixedly connected to the inner bottom walls of the supporting grooves, the ends, away from the supporting grooves, of the weighing sensors are fixedly connected with the two ends of the processing assembly respectively, a plurality of traction assemblies are fixedly connected to the driving assembly, and the ends, located outside the monitoring tank, of the traction assemblies are fixedly connected with experiment assemblies. According to the device, the decomposition bag is fixed through the electric wire and the electric clamping jaw, data loss caused by displacement of the decomposition bag is prevented, litter leaves are recycled and data are monitored and collected on site through the processing assembly, and the manual workload is reduced.

A steel strand stress deviation experiment device comprises a counter-force support, a first continuous jack and a second continuous jack are oppositely arranged at the two ends of the counter-force support, a monitoring mechanism is arranged in the counter-force support and used for being connected with a steel strand, and preformed holes are formed in the axial direction of the first continuous jack and the second continuous jack and used for allowing the steel strand to penetrate through. The first continuous jack and the second continuous jack are connected with a hydraulic pump station, and the monitoring mechanism and the hydraulic pump station are connected with a control unit. According to the steel strand stress deviation experimental device and the using method, continuous jack equipment on site is used as a power source, special equipment such as a press machine test bed does not need to be additionally purchased, and cost is saved; different pre-tightening forces can be applied to a plurality of steel strands at the same time for detection, and the monitoring results of the plurality of steel strands are independent, so that the accuracy, universality and accuracy of experimental data are ensured.

The invention relates to the technical field of pipe pile test equipment, and in particular to a repeated pull-out test device for photovoltaic facilities in sandy areas and an operating method, wherein the repeated pull-out test device for photovoltaic facilities in sandy areas comprises: a basic base, wherein the basic base is provided with a support; a moving component, wherein the moving component comprises a moving mechanism and a supporting mechanism; a cyclic pulling component, wherein the cyclic pulling component comprises a cyclic mechanism and a transmission mechanism; a sensor component, wherein the sensor component is used to detect the magnitude of the pulling force and the displacement of the experimental pipe pile during the detection experiment; a locking component, wherein the locking component comprises a fixing mechanism and an installation mechanism; the invention provides a simulated photovoltaic facility repeated pull-out test device and an operating method thereof, wherein the cyclic pulling component cyclically applies a vertical pull-out force to the pipe pile of a photovoltaic bracket, thereby overcoming the problem that the prior art cannot simulate the pull-out damage caused by the periodic vertical pull-out force to the extended foundation of the photovoltaic bracket.

The utility model discloses a compaction mould of applying different confining pressure state, including confining pressure device and base, the confining pressure device is composed of confining pressure plate, confining pressure column, cover plate, bolt, compression spring, strain gauge and shell, the confining pressure column, bolt and shell are equipped with corresponding screw thread, the confining pressure column and shell pass through the screw thread connection, and the cover plate is equipped with the cover plate. The strain gauge is attached between the confining pressure column and the confining pressure plate, the confining pressure column can be sleeved with the compression spring, and the confining pressure device is placed on the base. The confining pressure device for providing confining pressure in different states is additionally arranged, and the confining pressure device can be placed on the base so as to stabilize the confining pressure device. When a traditional compaction mold applies pressure to rock in a compression experiment, the influence of peripheral confining pressure is not considered, a rock sample is directly taken out after compression is completed, the measuring device is additionally provided with a confining pressure device to provide peripheral confining pressure, and rigid confining pressure and elastic confining pressure can be selected according to requirements.

The invention provides a rock direct shear experiment device capable of simulating a water-force-heat three-field coupling environment, and belongs to the technical field of rock tests.The rock direct shear experiment device comprises a sealed test box, and the sealed test box is composed of a test box body stress frame, a shear box, a high-temperature loading unit, a confining pressure loading unit and a hydraulic fracturing unit; the shear box is arranged in the test box main body stress frame, and the high-temperature loading unit, the hydraulic fracturing unit and the confining pressure loading unit are all arranged on the outer side of the shear box. The device provided by the invention can realize a multi-field coupling rock shear test, and solves the problem that in the prior art, an experiment can only be carried out under a single physical field condition and the coupling effect of three environments of water, force and heat cannot be effectively simulated; and a technical support is provided for developing the subject research of multi-field coupling environment deep rock mass engineering such as deep terrestrial heat and the like.

The utility model provides an air pressure experiment device, which comprises a device body, a buffer tube, a PLC control panel and a 24V direct current voltage module are arranged in the device body, two ends of the buffer tube are respectively provided with a to-be-experimented equipment interface tube and a compressed air interface tube, and the to-be-experimented equipment interface tube and the compressed air interface tube are integrally formed with the buffer tube. The pipe diameter of the to-be-tested equipment interface pipe and the pipe diameter of the compressed air interface pipe are smaller than the pipe diameter of the buffer pipe, the compressed air interface pipe is provided with a pressurization electromagnetic valve, the buffer pipe is connected with a pressure sensor and a pressure relief pipe, and the pressure relief pipe is connected with a pressure relief electromagnetic valve; a control display screen is installed on the surface of the device body, and the control display screen, the pressurization electromagnetic valve, the pressure relief electromagnetic valve and the pressure sensor are electrically connected with the PLC control panel. And the 24V direct-current voltage module is electrically connected with the PLC control panel. The device can be used for carrying out air pressure and air tightness experiments on air pressure experiment equipment, and has the advantages of simplicity in operation and accurate experiment data.

The present invention discloses an automated foam performance detection device, comprising a tank body, a bubbler tube is arranged in the center of the inner cavity of the tank body, the tank body is respectively connected to a liquid inlet system, a temperature control system, a bubbler system and a liquid discharge system, and an infrared signal system is also arranged on the tank body; the liquid inlet system comprises a water tank, a surfactant storage tank and a foam stabilizer storage tank, and the water tank, the surfactant storage tank and the foam stabilizer storage tank are all connected to the upper part of the bubbler tube; the temperature control system comprises a water bath, and the water bath is arranged on the lower outer side of the bubbler tube; the bubbler system comprises a gas cylinder, and the gas cylinder is connected to the bubbler tube through a gas delivery pipeline. The present invention adopts the method of upper liquid inlet and bottom gas distribution, which has the advantages of more uniform and dense foaming, rapid foaming and high foaming efficiency. In combination with the infrared signal system, the foam after foaming can be detected with high precision; the present invention has a high degree of intelligence, and can realize the integrated process of self-cleaning before foaming, during foaming and after foaming.

The invention discloses a bushing testing device based on a static pressure technology, which is applied to the technical field of bushing testing, and comprises a static pressure bearing tool assembly comprising a first X-direction static pressure guide assembly, a second X-direction static pressure guide assembly and a Y-direction static pressure guide assembly; the X-direction reciprocating loading mechanism is connected with the first X-direction static pressure guiding assembly and used for applying a reciprocating linear load in the X-axis direction to the lining pattern; the torsion loading mechanism around the X axis is connected with the second X-direction static pressure guide assembly and is used for applying a reciprocating swing torque around the X axis direction to the lining pattern; the Y-direction reciprocating loading mechanism is connected with the Y-direction static pressure guiding assembly and used for applying a reciprocating linear load in the Y-axis direction to the lining pattern; the first X-direction static pressure guiding assembly, the second X-direction static pressure guiding assembly and the Y-direction static pressure guiding assembly are all of a hydrostatic pressure supporting structure so that a liquid friction state can be formed in the loading process. In the loading process, mechanical friction interference is eliminated, and the actual loaded working condition of the bushing is truly simulated.

The present invention belongs to the field of geological disaster model experiments, and provides a geological disaster-induced landslide experimental device and experimental method, including an experimental box, wherein the interior of the experimental box is provided with a connected experimental cavity and a soil pile cavity, wherein the width of the experimental cavity is smaller than the width of the soil pile cavity, and the interior of the experimental cavity is fixedly connected with a partition, and the top of one end of the partition close to the soil pile cavity is hinged with an experimental support plate. The present invention sets a soil loading mechanism, after the landslide ends, the first telescopic rod drives the mounting plate to rise, and the mounting plate drives the sliding baffle and the bulldozer frame to rise, and after the bulldozer frame rises to a certain height, the second servo motor drives the second screw to rotate, and the second screw drives the bulldozer frame to move horizontally, and the bulldozer frame pushes the soil on the sliding baffle back to the experimental support plate through the movable bulldozer plate, and rolls the soil layer to compact the soil layer, without the need for manual auxiliary loading, which greatly improves the experimental efficiency.

The utility model discloses a water quality parallel sampling device which comprises a water quality sampling pipeline and a sampling hopper connected with the water quality sampling pipeline, and is characterized by further comprising a sampling frame used for supporting and erecting the water quality sampling pipeline and the sampling hopper, and the sampling frame comprises a sampling platform at least composed of an upper flat plate and a lower flat plate; the supporting rod pieces are distributed on one side of the upper flat plate and one side of the lower flat plate; a supporting ring used for supporting the sampling hopper is connected to the supporting rod piece, the upper flat plate and the lower flat plate are parallel and are fixedly connected through a frame rod, the upper flat plate is provided with a plurality of through holes used for water quality sampling pipelines to pass through, and water quality samples are divided by the sampling hopper through the water quality sampling pipelines and flow into sampling bottles placed on the lower flat plate. The whole structure is simple, stable and convenient, samples are shunted through the sampling hopper, the water quality sampling pipeline and the tee joint, 4-8 parallel determination samples can be made at the same time, experimental data are more accurate, and the device is suitable for some sampling tests with strict requirements.

The utility model relates to the technical field of fuel cells, and discloses a test system for an expansion air compressor, which comprises an air inlet pipeline, an adjusting device and a bypass valve, according to the testing system, firstly, the compression part of the expansion air compressor directly sucks environmental gas through the gas inlet pipeline, then the gas output by the compression part is adjusted through the adjusting device so as to simulate the PH value and the humidity of the gas in a real working environment, and the PH value and the humidity of the mixed gas can be rapidly changed according to requirements; in addition, the system is further provided with a bypass valve, a fourth pipeline and a fifth pipeline, and the flow of gas entering the turbine part is adjusted by controlling the opening degree of the bypass valve so as to simulate the situation that the electric pile consumes oxygen, so that experimental data are more accurate, and the performance of the electric pile is improved. The test system not only can simulate a real working environment, but also is convenient to adjust test parameters, and is high in universality.

The invention discloses a device and method for quickly measuring the matrix suction and shear strength of unsaturated soil. The device includes a centrifuge cabin and a secant workbench, a pressurizing system, a pressure sensor, a breathable pressure cover, a shear box, a drainage collection box, a ball, a slideway, a shear force application system, a shear force sensor and a displacement sensor: the shear box is connected to the drainage collection box and contacts the slideway of the secant workbench through the ball; the pressurizing system is installed at the center of the cabin, and the pressure acts on the sample through the breathable pressure cover; the shear force application system is installed at the bottom of the centrifuge cabin, and the shear force acts vertically upward on the lower shear box; the values ​​of force and displacement are collected by the pressure sensor, the shear force sensor and the displacement sensor. The method steps are: preparing the sample; installing the sample; measuring the matrix suction, the unsaturated strength and the water content. The invention can realize the rapid measurement of the matrix suction and unsaturated strength of the unsaturated sample, which is of great significance to the research of unsaturated soil.

The underwater animal experiment system is used for solving the problem that an existing underwater animal experiment system cannot keep experimental animals at a specific water depth when being put underwater, and comprises a fixing cage, a load platform, an animal experiment support and two underwater automatic balancers; the load platform is used for fixing the fixing cage, the top of the load platform is connected with the animal experiment support, and the bottom of the load platform is connected with the two underwater automatic balancers; the end of the animal experiment support away from the load platform is provided with a load lifting ring for lifting; one of the two underwater automatic balancers is used for balancing the weight of the two ends of the load platform, and the other is used for balancing the weight of the left and right ends of the load platform; through the two underwater automatic balancers arranged at the bottom of the load platform, it is ensured that the underwater experiment system can keep balance when the underwater animal experiment system is put underwater, so that the animals fixed in the fixing cage are at a specific water depth, and accurate experimental data can be obtained.

The application provides a new pollutant sampling device and method based on fugacity theory in the earth surface-atmosphere, and belongs to the technical field of environmental monitoring test equipment. The device comprises a near-surface collection device, an atmospheric collection device, a power device, and two conveying and collecting devices. One end of one conveying and collecting device is connected with the near-surface collection device to obtain a sample in the earth surface-atmosphere when the new pollutant reaches equilibrium according to the fugacity theory, and the other end is connected with the power device. One end of the other conveying and collecting device is connected with the atmospheric collection device to obtain a new pollutant sample in the atmosphere according to the fugacity theory, and the other end is connected with the power device. The device provides a double stable low-flow active collection power to ensure that the collected gas is under the earth surface sampling cover plate during the sampling process, has sufficient residence time, reaches equilibrium, makes the measured experimental data more accurate, and can directly collect the new pollutant sample when the new pollutant reaches equilibrium between the earth surface and the atmosphere to determine the content of the new pollutant.

The invention relates to the technical field of automobile brake emission testing, in particular to a multi-device linkage closed chamber automobile brake particulate matter detection system and method. The system comprises a closed chamber, a brake simulation device is arranged in the closed chamber, and the brake simulation device is sequentially connected with a climate simulation device, a climate monitoring device, a collection and detection device and a system control device outside the closed chamber through gas pipelines. According to the invention, by constructing the multi-device linkage closed chamber automobile brake particulate matter detection system, comprehensive and accurate detection of particulate matters in the whole braking process is realized; each module of the system undertakes a specific function, and mutual data transmission and instruction response are realized through gas pipelines and electrical connection, so that the accuracy and repeatability of detection are improved, the cooperative work of the devices is ensured, and the generation condition of particulate matters in the braking process can be analyzed more comprehensively.

The utility model relates to a centripetal force demonstration instrument, which comprises a base, a turntable and a hollow triangular prism assembled at the center of the top of the turntable, the top of the base is provided with a groove, a motor is mounted in the groove, and the center of the bottom of the turntable is mounted on an output shaft of the motor; tension sensors are installed at the bottom ends of the three side edges of the hollow triangular prism, an ESP32 plate and a 5v battery used for supplying power to the plate are further installed in the hollow triangular prism, the battery is used for supplying power to the tension sensors, and penetrating holes are formed in the bottoms of the tension sensors. When the motor drives the rotating disc and the hollow triangular prism to rotate, the pull rope pulls the rotating weight to rotate along with the rotating disc and provides centripetal force for the rotating weight, and at the moment, the tension sensor can measure the magnitude of the corresponding centripetal force and is convenient to check.

The utility model relates to a growth environment simulation device for environmental microorganisms, which comprises a box body and a box cover, a first support is arranged in the box body, a plurality of support rods are mounted on the first support, and heating rods in a linear array are mounted on each support rod; the box body is divided into a plurality of heating areas through heating rods, a temperature sensor and a humidity sensor are arranged in each heating area, and the temperature value and the humidity value in each heating area of the box body are obtained through the temperature sensors; the heating rods are arranged to heat each area of the box body, so that the simulation device can simulate growth data of environmental microorganisms in different temperature environments and humidity environments, the growth environment of the microorganisms is accurately controlled, and the conveying assembly is arranged to convey substances, so that the simulation device is convenient to use. Pollution of manual operation to a microorganism growth environment can be avoided, and the accuracy of experimental data is improved.

The utility model discloses an adjustable and controllable efficient heat dissipation prevention device which comprises an efficient heating unit and a temperature control unit and further comprises a heat dissipation adjustment and control unit, and the heat dissipation adjustment and control unit comprises a supporting nut, a balance nut, a balance steel wire, a drawing plate, a supporting frame, a concave plate and an anti-scald handle. The efficient heating unit comprises a hole heating body partition plate and a heating body; the temperature control unit comprises a temperature control adjusting knob, a temperature control digital display, a power switch and a temperature sensor; the temperature control unit is installed on the right side of the water area pot, the efficient heating unit is arranged on the left side of the temperature control unit, and the heat dissipation regulation and control unit is supported above a groove of the water area pot through supporting rods at the two ends of the heat dissipation regulation and control unit. The adjustable and efficient heat dissipation prevention device is novel in conception, reasonable in design, capable of replacing a heat dissipation prevention device in the prior art, convenient to operate and high in economic benefit and market prospect.

The invention discloses an electrochemical etching experiment device, and relates to the technical field of electrochemical etching, the electrochemical etching experiment device comprises a power supply, a processing box, an electrolysis chamber fixedly connected in the processing box and an electrolyte box fixedly connected with the bottom of the processing box, one side of the electrolysis chamber is provided with two groups of auxiliary gears and motors, and output shafts of the motors are provided with main gears; one side of the inner wall of the electrolysis chamber is fixedly connected with an electric telescopic rod, one end of the electric telescopic rod is fixedly connected with a piston plate, the piston plate is in sliding connection with the inner wall of the electrolysis chamber, two arc-shaped grooves are formed in the piston plate, and middle electrolysis plates are detachably connected into the arc-shaped grooves correspondingly; the inner top wall and the inner bottom wall of the electrolysis chamber are fixedly connected with arc-shaped electrolysis plates respectively; according to the present invention, the apparatus has characteristics of simple structure and complete functions, and can meet the experiment requirements of rectangular workpieces and cylindrical workpieces.

The utility model discloses a natural gas hydrate visualization experiment device belongs to energy experiment device technical field, including reaction module and visualization module, reaction module includes the reaction kettle, and the visualization module sets up in the reaction end part of reaction kettle, the outside wall on the reaction kettle middle segment is embedded with multiple transparent cylinders, is used as the observation window of visualization module, reaction module still includes CH4 gas cylinder, CO2 gas cylinder, booster pump, vacuum pump, gas -water separator, gas collecting bottle and constant temperature water bath device, CH4 gas cylinder and CO2 gas cylinder all communicate the input of booster pump, the output of booster pump communicates reaction kettle, and vacuum pump communicates reaction kettle, and the one end of gas -water separator communicates reaction kettle, and the other end communicates gas collecting bottle, and reaction kettle sets up in constant temperature water bath device, and this device simple structure, convenient operation, experimental data accurate, and can be applicable to different experiment and teaching demand.