1008results about How to "Stable temperature" patented technology

The invention belongs to the technical field of building envelope photo-thermal performance detection, and particularly relates to a spray type light-transmitting roof photo-thermal performance detection device and a detection method thereof. The spray type light-transmitting roof photo-thermal performance detection device comprises an external environment simulation device which comprises an external environment box and an artificial light source, and the artificial light source is installed in the external environment box; the light-transmitting roof test piece is mounted on the lower side wall of the external environment box; the spraying device comprises a nozzle, and the nozzle is located below the artificial light source and above the light-transmitting roof test piece; the heat metering device comprises a heat metering box and a plurality of detection sensors; the air supply and return system is used for circularly conveying airflow into the heat metering device; the water supply and return system is used for supplying water to the air supply and return system; the control system is used for controlling the external environment simulation device, the heat metering device, the air supply and return system, the water supply and return system and the spraying device. According to the invention, the photo-thermal performance of the light-transmitting roof under the spraying condition can be accurately evaluated.

According to the direct-expansion cryogenic pre-dehumidification and heat pump regeneration combined low-dew-point double-rotating-wheel dehumidification system, the control method and the terminal, accurate regulation and control of all devices in the rotating-wheel dehumidification system are achieved according to data collected by the sensor module in real time, and therefore the stability of the air supply dew-point temperature is ensured. By adopting the direct expansion cryogenic technology, the dehumidification burden of the rotating wheel is effectively relieved, and the regeneration temperature is reduced, so that the energy consumption in the regeneration process is remarkably reduced. The regeneration heat pump condenser is installed at the inlet of the rotating wheel, part of regeneration heat can be borne, and regeneration energy consumption is further reduced. A regeneration heat pump evaporator is further installed at an exhaust outlet of the rotating wheel, heat in regeneration exhaust can be recycled, and the purpose of saving energy is achieved. According to the rotating wheel dehumidification system, dual optimization of dehumidification performance and energy consumption performance is achieved, the dehumidification efficiency is remarkably improved, and the energy consumption of the system is reduced.

The invention relates to the technical field of fermentation, in particular to a dough fermentation temperature control device which comprises a fermentation box, a heating device, a cooling device, a rotating shaft, a dough bearing disc and a dough elasticity detection device. Judging whether the initial heating power of the heating device needs to be adjusted according to the fermentation temperature rise slope comparison result to obtain second heating power; according to the fermentation temperature comparison result, whether a cooling device is started or the current fermentation dough temperature is detected or the fermentation dough continues to be heated with second heating power is judged; judging whether the volume of the fermented dough needs to be detected or not according to the fermentation temperature comparison result; and adjusting the second heating power according to the volume growth curve comparison result to obtain second constant heating power. By measuring the temperature, the volume and the elasticity of the dough, the fermentation temperature in the fermentation process is adjusted, so that the dough fermentation accuracy is ensured.

The invention provides an annual intercropping green manure planting method suitable for orchards in plateau areas. According to the method, tartary buckwheat and vicia villosa are mainly adopted as green manure plants, and a plurality of key steps of land parcel selection, soil preparation before sowing, variety selection, seed treatment, green manure sowing, plant management, cutting and covering and the like are clearly stipulated. The method can improve the utilization rate of nutrients in the soil, increase the content of organic matters in the soil, improve the soil quality, effectively inhibit growth of weeds between rows and on ridges of the organic apple orchard, reduce the weeding cost, and solve the problem of high labor cost caused by long-term ploughing and weeding of the organic apple orchard in the plateau mountain area of Yunnan province. Excessive dependence on organic fertilizer is effectively relieved, and the method is an annual intercropping mode for comprehensively improving ecological benefits and economic benefits of the orchard.

The present invention relates to the field of grain transport technology, and in particular to an agricultural grain transport device, comprising a base, a shell fixedly installed on the top of the base, a feed hopper and a discharge hopper respectively arranged at both ends of the shell, a cylindrical screen arranged inside the shell, a refrigeration mechanism arranged inside the shell, a mounting plate fixedly installed on the side of the discharge hopper away from the shell, a motor fixedly installed on the top of the mounting plate, a rotating shaft fixedly connected to the output end of the motor, and a spiral hollow disk and a solid disk fixedly connected to the outer wall of the rotating shaft. The advantages are: the inside of the shell maintains a low temperature, the low temperature helps to increase the hardness difference between grain and impurities, improve the efficiency of impurity screening, reduce the stickiness between grains, ensure the smooth flow of grain, the screen effectively screens out impurities in the grain, improves the purity of the grain, pushes the grain in layers, prevents excessive accumulation of grain, and reduces the damage of grain due to friction and extrusion.

The invention discloses an energy-saving and environment-friendly intelligent outdoor box-type substation, and belongs to the technical field of box-type substations, and the substation comprises a box-type housing, and the side wall of the box-type housing is provided with a heat dissipation window in a penetrating manner; the sealing assembly comprises a filtering mechanism and a drying mechanism, the filtering mechanism is installed at a port of the heat dissipation window and used for isolating and filtering out particle impurities in the air, the drying mechanism is arranged in the heat dissipation window in a sliding mode and used for adsorbing and removing water vapor in the air, and separation and combination with the filtering mechanism are achieved through sliding of the drying mechanism; the opening is used for opening or closing the radiating window; the flow guide assembly comprises a solar top cover and a fan; the rainfall assembly is arranged at the bottom of the outer edge of the solar top cover and located above the sealing assembly, and the rainfall assembly is used for synchronously driving the sealing assembly and the flow guide assembly during rainfall; and the water accumulation assembly is arranged on the outer side of the bottom of the box type shell and located below the sealing assembly, and the water accumulation assembly is used for locking the water falling assembly and sealing the sealing assembly when water is accumulated on the ground.

The invention relates to the field of temperature control, in particular to a solution conductivity meter temperature control method based on fuzzy PID, and the method comprises the steps: collecting the temperature data of a measurement solution through a high-precision temperature sensor; acquiring temperature data of the measurement solution, and calculating a temperature deviation value and a temperature change rate of the measurement solution; inputting the temperature deviation value and the temperature change rate into a fuzzy PID (Proportion Integration Differentiation) control module; according to the input temperature deviation value and the temperature change rate, the input of the PID controller is corrected through a fuzzification and fuzzy rule table in the fuzzy PID control module and a corresponding variable quantity output by defuzzification; according to an algorithm, updated PID parameters are obtained, and then a pulse width control signal is obtained by an incremental PID control algorithm to control a driving circuit to dynamically adjust a TEC semiconductor cooler, so that the temperature of the measured liquid is controlled, the control speed is effectively improved, the robustness of the system is enhanced, and the temperature is stabilized near the target temperature.

The invention relates to a method for continuously preparing a single-walled carbon nanotube, which comprises the following steps of: uniformly mixing organic metal and a growth promoter in proportion to form a catalyst, adding the catalyst into a dust spraying device, connecting each gas pipeline and a preheating furnace inlet, connecting an outlet of the preheating furnace with a vertical tube furnace, and sealing the whole device; firstly introducing inert gas to remove air, then preheating the furnace, and heating the vertical tube furnace; after the temperature is stable, the injection device injects a catalyst into the preheating furnace, the preheating furnace and the vertical tube furnace are kept at the constant temperature, and the single-walled carbon nanotubes continuously grow; after the catalyst is consumed, stopping gas supply, turning off a power supply, and taking a sample at room temperature. The catalyst is fully preheated before entering a vertical tube furnace, and the reaction activity of the catalyst reaches the highest; the temperature in the furnace chamber of the reactor is constant, organic gas is fully contacted with a catalyst, carrier gas and reducing gas and is uniformly heated, and continuous growth of the carbon nanotubes is facilitated; the energy consumption is low, the occupied area is small, the operation is simple, continuous production can be realized, the productivity is high, the length-diameter ratio is large, the G / D value is large, and the specific surface area is large.

The invention relates to an array fused salt electric heating energy storage system which comprises a first fused salt electric heating system, a second fused salt electric heating system, a third fused salt electric heating system, a fourth fused salt electric heating system, a fifth fused salt electric heating system and a sixth fused salt electric heating system. Wherein different stages of heating systems have different responses to fluctuating power, and the fused salt is heated to different temperatures. L is greater than or equal to 1 and less than or equal to Z-1, new energy fluctuation can be quickly responded in a relatively large working condition, the new energy fluctuation can be changed along with new energy power, but the temperature of a fused salt outlet also has certain fluctuation; fused salt output by the front L-stage fused salt electric heating systems enters the buffer system, so that the fused salt can be further heated by the rear-stage fused salt electric heating system; the fused salt is electrically heated by the (L + 1) th, (L + 1) th, (L + 1) th, (L + 1) th, (Z) th fused salt electric adding systems, and the temperature of outlet fused salt can be accurately controlled through heating power control, so that the finally stored fused salt reaches a preset temperature. The invention ensures that the faulty heating unit is bypassed at any time without affecting the operation of the heating array.

The invention discloses an HDI circuit board laser drilling device, and particularly relates to the technical field of HDI circuit board drilling, the HDI circuit board laser drilling device comprises an operation table, a rotating mechanism is rotatably connected to the right side of the middle of the upper end of the operation table, a transmission mechanism is rotatably connected to the front side of the upper end of the operation table, and a drilling mechanism is fixedly connected to the middle of the upper end of the operation table; an air blowing mechanism is arranged on the left side of the lower portion of the drilling mechanism. According to the HDI circuit board laser drilling device, in the descending process of the laser drilling head, a baffle is driven to be matched with a rectangular block, the HDI circuit board can be automatically and accurately positioned, the drilling precision and efficiency are improved, in the drilling process, a spray head is matched with a limiting pipe and a first sliding block, and therefore the HDI circuit board can be accurately drilled. According to the HDI circuit board drilling device, the surface of a drilled HDI circuit board is cleaned through the soft brush, chippings and dust generated in the drilling process can be removed, meanwhile, in the reset process of the laser drilling head, the surface of the drilled HDI circuit board is cleaned through the soft brush, the residual chippings and dust can be removed, and the cleanliness of the HDI circuit board is guaranteed.

The utility model relates to a secondary ink cartridge assembly for a printer, which comprises a secondary ink cartridge body, the secondary ink cartridge body comprises an ink cartridge body and an ink cartridge cover which are mutually sealed and covered, a high-pressure ink cavity, a low-pressure ink cavity and a normal-pressure ink cavity are arranged in the ink cartridge body, and the high-pressure ink cavity, the low-pressure ink cavity and the normal-pressure ink cavity are respectively provided with a liquid level sensor. The high-pressure ink cavity is sequentially communicated with the printing spray head, the low-pressure ink cavity, the normal-pressure ink cavity, the second ink pump, the bubble removing device and the first ink pump, so that ink flows out of the high-pressure ink cavity, sequentially flows through the printing spray head, the low-pressure ink cavity, the second ink pump, the normal-pressure ink cavity, the first ink pump and the bubble removing device and then flows back into the high-pressure ink cavity, and therefore a self-circulation ink path is formed. According to the secondary ink box, ink between the secondary ink box body and the printing spray head keeps continuous circulating flow, precipitation is avoided, the temperature of the ink entering the printing spray head is appropriate and constant, the bubble content is small, the pressure fluctuation is small, and therefore the printing quality is higher, and the printing effect is better.

The invention relates to a high-temperature heat dissipation material Ti-6Al-4V and a preparation method, application and a testing device and method thereof, and the method comprises the following steps: ablating a polished and cleaned Ti-6Al-4V material by using a femtosecond laser, and preparing a series of parallel grooves in the surface of the material by using accurate laser parameters, the depth of the grooves being 56 [mu] m, and the distance between the adjacent grooves being 90 [mu] m; performing a vertical evaporation test on the prepared Ti-6Al-4V material at a high temperature to obtain evaporation rates and water film states of the Ti-6Al-4V material at different temperatures; benefited from rich micro-nano structures on the surface of the Ti-6Al-4V material, the Ti-6Al-4V material shows good water absorption and evaporation functions under an extreme high-temperature condition, the test temperature breaks through the 150 DEG C high-temperature limit of the current M-cycle, a gate is opened for higher-temperature M-cycle technology application, and the material has good application prospects. And the heat dissipation requirements of high-temperature scenes such as an industrial cooling system and a nuclear power station are met.

The utility model provides a high-temperature charging barrel of a die-casting die, which comprises a charging barrel and a plurality of cooling water channels, the cooling water channels are arranged along the axial direction of the charging barrel, the cooling water channels are arranged in the lower half side wall of the charging barrel, a plurality of heating rods are arranged in the upper half side wall of the charging barrel, and the heating rods are distributed in the circumferential direction; the heating rod is arranged along the axial direction of the charging barrel; each heating rod is connected with a cable; and a thermocouple is arranged on the outer side wall of the charging barrel. The utility model ensures that the charging barrel pressure chamber is uniformly heated, so that axial cracks at the bottom of the pressure chamber sprue, interference between the charging barrel pressure chamber and the punch are reduced, strain of the pressure chamber is reduced, the service lives of the pressure chamber and the punch are prolonged, the production cost is saved, the flowability and feeding capacity of molten metal in the cavity are improved, and the mechanical property fluctuation of a casting is reduced; and low material temperature can be used for filling, and the risk of insufficient molten metal casting due to cold shut is reduced.

The invention discloses a frozen soil thermal characteristic measuring device and method based on a thermal pulse method, and the method comprises the steps: heating a cylindrical heating probe through a heater at a constant power, detecting the temperature of the cylindrical heating probe through a first temperature probe, and uploading the temperature to a cloud through a transmission unit; meanwhile, the data recorder displays the temperature data of the second temperature probe and the first temperature probe in real time; keeping the temperature of the cylindrical heating probe constant; a frozen soil sample is heated by the cylindrical heating probe, a temperature penetration curve of the frozen soil sample is obtained, and then the volume diffusivity and the volume thermal conductivity of the frozen soil sample are obtained. According to the method, the highest space temperature can be effectively kept below the freezing point, so that the overall thermal performance of the quartz sand and the ice content is estimated, and the accuracy of estimating the overall thermal performance of the frozen soil sample in the cold region is improved.

The utility model belongs to the technical field of steam utilization systems, and particularly relates to a steam system of an acrylic acid device. The steam system of the acrylic acid device comprises a thermoelectric device and the acrylic acid device, the thermoelectric device comprises a 10 # desuperheating pressure reducer, an 8 # desuperheating pressure reducer, a 9 # desuperheating pressure reducer and a 1 # desuperheating pressure reducer, and the acrylic acid device comprises a 7 # desuperheating pressure reducer. The 10 # temperature and pressure reducer is connected with the 9 # temperature and pressure reducer through a 9 # steam pipeline, two pipelines are led out of the 9 # temperature and pressure reducer, one pipeline is connected with a pipeline in the acrylic acid device through a standby pipeline, and the other pipeline is connected with a pipeline led out of the 8 # temperature and pressure reducer. According to the steam system of the acrylic acid device, the thermoelectric device is connected with the acrylic acid device through the two main pipelines, the steam temperature is increased, the temperature and superheat degree of turbine steam are facilitated, and energy conservation and consumption reduction are achieved.

The invention provides an optical fiber monitoring device, an optical fiber laying method and a monitoring method for curing deformation of a super-thick foam sandwich composite material component. The device comprises a flat plate mold, a foam core layer with a chamfer on one side, a plurality of cut prepregs and an optical fiber protection mold. According to the device and the method, the application range of the fiber grating sensor in the curing monitoring field is widened, and the temperature and the strain in the curing process of the super-thick foam sandwich component are monitored in real time by using the optical fiber protection mold and the improved optical fiber laying method for relatively thick composite components such as the super-thick foam sandwich component.

The utility model discloses a uniform mixing device for reagent analysis, relates to the field of uniform mixing, and provides the following scheme aiming at the problems that the manual uniform mixing is often adopted during the existing reagent analysis, so that the uniform mixing is often caused, or the detection effect is poor due to overlarge shaking force, the uniform mixing device comprises a base and an operating device, the operation device is arranged on the outer side of a side plate of the base, a supporting column is arranged below the base and used for supporting the device, a uniform mixing mechanism is arranged on the base and used for uniformly mixing liquid, the uniform mixing mechanism comprises a uniform mixing plate, and a plurality of placing openings are formed in the uniform mixing plate. The device is novel in structure, the spring of the device rebounds to clamp the test tube, and the motor drives the uniform mixing plate to rotate, so that a reagent in the test tube is uniformly mixed, and the heating tube is used for heating, so that the temperature in the test tube is kept constant under the condition of lower temperature.

The utility model relates to a special vehicle for hydrogen storage, hydrogen transportation and dehydrogenation. The special vehicle mainly comprises a container and a transportation vehicle, wherein the container is provided with hydrogen storage, hydrogen transportation and dehydrogenation equipment; the equipment for storing, transporting and dehydrogenating the hydrogen is arranged in a container to form the container provided with the equipment for storing, transporting and dehydrogenating the hydrogen; the container is fixed on the chassis of the transport vehicle to form a whole body, so that the special vehicle for storing, transporting and dehydrogenating hydrogen is formed; the special vehicle disclosed by the utility model can be used for implementing a coordinated service of hydrogen storage, hydrogen transportation, dehydrogenation and hydrogen supply, has the advantages that the hydrogen storage capacity of a transportation vehicle is high, hydrogen transportation and dehydrogenation are carried out at normal pressure, hydrogen transportation at normal pressure is safe and reliable, potential safety hazards possibly occurring in transportation of hydrogen stored in a high-pressure bottle are overcome, and the special vehicle has good industrial practicability.

The invention relates to the technical field of corrosion tests, and particularly provides a corrosion fatigue coupling test device and a corrosion fatigue coupling test method for a buried pipeline. Corrosion and fatigue coupling effects suffered by the buried pipeline are simulated through the circulating pressurizing system, the fatigue loading system and the corrosion environment adjusting system, and related data of the pipeline and soil in the corrosion process are recorded through the data collecting and monitoring system. According to the invention, the test process is closer to the real service environment of the buried water supply pipeline, the temperature, humidity, pH and other parameters in the test box can be kept relatively stable, and the influence of dead load of buildings, vehicles, vibration and other live loads in the pipeline operation process is fully considered, so that the test result is more reliable and accurate, and the test efficiency is improved. Meanwhile, all the systems are controlled in a centralized mode through the controller, so that the experiment period is relatively short, the automation degree is high, operation is easy and convenient, functions are comprehensive, and the application prospect is wide.

The invention discloses a pyraclostrobin preparation device which comprises a reaction kettle and further comprises a temperature control cooling box, the temperature control cooling box is provided with a containing space, a partition part is arranged in the temperature control cooling box, the partition part divides the containing space into a cooling channel and a temperature control channel, and the temperature control channel is communicated with the cooling channel. The temperature control cooling box and the separation part are both made of heat conduction materials, a hydrothermal solution is introduced into the temperature control channel, and the temperature of the hydrothermal solution is higher than the crystallization temperature of pyraclostrobin. According to the pyraclostrobin preparation device provided by the invention, the reaction kettle and the temperature control cooling box are combined for use, so that a pyraclostrobin solution can circularly move between the reaction kettle and the temperature control cooling box, and precipitates and irregular crystals are fed into the reaction kettle for re-processing; the production speed of the pyraclostrobin crystals is increased, and meanwhile continuous production can be achieved.

The automatic soot blowing furnace comprises a furnace body, a conveying device is arranged outside the furnace body, the conveying device is used for conveying a cupel into the furnace body, and a furnace door capable of being automatically opened and closed is arranged on the furnace body; and an endoscopic camera is arranged in the furnace body and is used for monitoring a soot blowing end point. The device can control the cupel to automatically enter and exit from the hearth, frequent door opening and closing are not needed, the temperature in the furnace is stable, energy consumption loss is reduced, harmful gas emission is reduced, and cost reduction and efficiency improvement are facilitated; image data are acquired by adopting a light supplementing lamp and an endoscopic camera, so that the method is more reliable and accurate; and the cupel subjected to soot blowing is taken out in time through the material taking module, the loss of metal silver is reduced, and the extraction content is increased. Due to feeding and discharging of the cupel, automatic operation is achieved, the working efficiency is improved by 50%, and the cupel can be in butt joint with full-automatic equipment.

The invention discloses a refrigerator temperature equalization method and system based on dynamic wind speed control, and relates to the technical field of refrigerator temperature equalization, and the method comprises the following steps: monitoring the standard temperature of each region under the optimal operation state of a refrigerator, and obtaining the temperature equalization data of the refrigerator; acquiring load temperature influence data and fan processing influence data which influence the temperature equalization of the refrigerator; carrying out machine learning on the load temperature influence data and the fan processing influence data to obtain a temperature change suitable model; and controlling the output wind speed and output stop of the fan according to the output of the temperature change suitable model in combination with the temperature uniformity data. According to the invention, the wind speed is accurately controlled, so that the problem that the temperature nonuniformity is influenced by over-high or over-low regulation of the wind speed is solved.

The invention discloses a copper smelting method of an Ausmelt furnace without a top-blowing spray gun, and relates to the technical field of copper smelting of the Ausmelt furnace, and the copper smelting method comprises the following steps: (1) spraying coal powder and mineral powder into a molten pool through an ore gun and a coal gun of the Ausmelt furnace without the top-blowing spray gun; (2) a side-blowing combustion gun of the Ausmelt furnace without the top-blowing spray gun sprays fuel to the molten pool; and (3) when the copper matte reaches the target grade 58-62%, ending the reaction, recording the melt temperature distribution, measuring the viscosity of the slag, and taking the slag sample for analyzing the content of Fe3O4. The Ausmelt furnace without the top blowing spray gun comprises a flue, a baffle, a combustion gun, an ore gun and a coal gun, a flue is arranged on the upper portion of the furnace body, a baffle is arranged below the flue, combustion guns are symmetrically arranged on the furnace body above a slag layer, coal guns are symmetrically arranged on the furnace body at the junction of the slag layer and a molten copper bath, ore guns are symmetrically arranged on the furnace body at a molten copper bath layer, and pressure gauges are arranged on the ore guns and the coal guns.

The invention relates to the technical field of artificial stone processing, in particular to a forming press for artificial stone manufacturing, which comprises a mold main body and an equipment main body, the top of the mold main body is slidably connected with a clamping heat dissipation mechanism, the mold main body is used for forming artificial stones, the inner wall of the mold main body is provided with a fixing groove, and the inner wall of the fixing groove is fixedly connected with a limiting mechanism; in consideration of the situation that only a small number of small artificial stones need to be used in a construction site, too much waste is caused when large artificial stones are cut if special shapes are needed, the sizes of the artificial stones are usually difficult to control when the artificial stones are formed in the prior art, and if forming of specific sizes is needed, appropriate molds and pressing plates need to be selected firstly; in the artificial stone production process, complete forming can be achieved by waiting for solidification, equipment can conduct heat to the artificial stone in the forming process, the temperature of the artificial stone is increased, the forming speed of the artificial stone is slowed down due to temperature increase, and damage caused by excessive accumulated heat of the equipment can be possibly caused.

The utility model relates to the technical field of rice seed germination accelerating, and discloses a rice seed germination accelerating box which comprises a box body, a gear motor is installed at the top of the box body, the output end of the gear motor penetrates through the box body and is connected with a transmission column, and the bottom of the transmission column is rotationally connected with the bottom of the inner surface of the box body; two net supporting discs are evenly and fixedly installed on the outer surface of the transmission column, and a plurality of partition plates are evenly and fixedly installed on the surfaces of the inner sides of the two net supporting discs. The gear motor drives the transmission column to rotate at a constant speed in the box body, the transmission column drives the two net supporting discs to rotate when rotating due to the fact that the two net supporting discs are fixed to the surface of the transmission column, and when the pump body pumps out stored water on the inner side of the water tank for irrigation, the rotation effect of the two net supporting discs is matched, so that the irrigation efficiency is improved. The inner side of the supporting net disc is fully covered and sprayed by the irrigation pipe, so that rice seeds on the inner side of the supporting net disc are more uniformly irrigated, and the germination accelerating efficiency of the seeds is improved.

The utility model discloses a laser collimation module capable of expanding beams for multiple times. The laser collimation module comprises a laser collimation module body arranged on one side of a galvanometer adapter plate, a beam expanding structure arranged at one end of the laser collimation module body and a heat sink structure arranged outside the laser collimation module body. The horizontal projection cylinder is arranged between the fixed seat and the galvanometer adapter plate, the laser collimation cylinder is arranged on one side of the fixed seat, the fixed plate is arranged in the fixed seat, and the reflector is arranged in the fixed plate; the first lens barrel is arranged outside the laser collimation barrel, the second lens barrel is connected with the first lens barrel, and the third lens barrel is connected with the second lens barrel; a first glass lens is arranged in the first lens cone, a second glass lens is arranged in the second lens cone, and a third quartz lens is arranged in the third lens cone; the plurality of integrated assemblies are arranged outside the laser alignment module, and the plurality of heat sink assemblies are arranged inside the integrated assemblies. According to the utility model, the laser beam can be effectively expanded by multiple times, and the requirements of different application scenes on the size of the laser beam can be met.

The invention relates to the technical field of organic synthesis, in particular to a method and device for preparing 4-methyl-1-pentene, and the method comprises the following steps: (1) pretreating a raw material containing propylene and an inert substance, and carrying out heat exchange on the obtained refined raw material to obtain a heat-exchanged raw material; (2) carrying out dimerization reaction on the raw material subjected to heat exchange and a catalyst in the presence of inert gas, wherein the obtained reaction product is divided into a part of reaction product and a residual part of reaction product; (3) cooling the part of the reaction product as a heat exchange medium, and carrying out heat exchange with the refined raw material to obtain a heat-exchanged product; (4) separating a mixed material of the rest reaction product and the product after heat exchange to obtain a light component and a heavy component; and carrying out rectification on the heavy component to obtain the 4-methyl-1-pentene. According to the method, by controlling the reaction temperature rise, the stable reaction temperature and the uniform reaction process are ensured, and the raw material conversion rate and the product selectivity are further improved.

According to the fretting wear test device in the high-temperature gas environment, the double-layer test cavity capable of simulating the high-temperature gas environment is designed, high temperature, gas components and pressure conditions are adjusted through the heating unit and the gas control module, and it is ensured that the test is conducted under the condition close to the actual service condition; by loading different normal forces, high frequency and variable displacement amplitude, fretting wear behaviors in a high-temperature gas environment are simulated so as to research the wear characteristics between the sample and a wear pair, and meanwhile, high-temperature-resistant materials such as a double-layer shell structure and a high-purity alumina fiber material are adopted, so that the double-layer test cavity can bear the high-temperature environment, and the wear resistance of the sample is improved. And heat is effectively isolated to ensure operation safety. And finally, the temperature and the air pressure in the test cavity are monitored in real time through a heating piece and an external driving system, so that the temperature and the pressure in the test process are stabilized in a set range, and damage to equipment caused by overheating or overpressure is avoided.

The invention discloses a shale gas reservoir proppant fracture conductivity testing device and a using method, and relates to the technical field of petroleum engineering, the shale gas reservoir proppant fracture conductivity testing device comprises a conductivity testing device and a data acquisition module, and the data acquisition module is used for acquiring pressure data, flow data and temperature data in the testing process of the conductivity testing device. Pressure, flow and temperature data in the testing process are accurately acquired through the integrated data acquisition module, the actual stratum condition can be comprehensively simulated by combining a pressure applying device, a fluid injection and output system and oil liquid supply with the adjustable temperature in the flow guide testing device, and meanwhile, the flow guide testing device can be used for testing the pressure, the flow and the temperature. Through the arrangement of the upper fixing plate and the pressure applying device, the upper simulation rock stratum and the lower simulation rock stratum are used for clamping the proppant, and the pressure sensor is arranged in the proppant layer in an embedded mode, so that accurate testing and analysis of the fracture conductivity of the proppant are achieved, and reliable data support is provided for effective development of a shale gas reservoir.

The invention belongs to the technical field of heat energy recovery, and discloses a hydrogen fuel cell engine heat energy recovery device which comprises an engine body, a main body shell is arranged at the top of the engine body, side face supporting shells are fixedly connected to the two sides of the main body shell correspondingly, and a heat conduction assembly is arranged in the main body shell; the same side of the pair of side surface support shells is fixedly connected with a heat dissipation assembly; the heat conduction assembly comprises a plurality of cooling liquid pipes movably connected to the top of the main body shell, through cooperation of the heat conduction assembly, the temperature difference power generation piece and other structures, heat dissipated by a fuel cell can be conveniently utilized for power generation, the heat dissipated by operation of the engine body is guided to the cooling liquid pipes through the first heat conduction plate, and the cooling liquid pipes are arranged in the cooling liquid pipes. Heat is absorbed through cooling liquid in a cooling liquid pipe, and then the cooling liquid is conveyed into a cooling liquid temporary storage box through a communicating pipeline and a liquid discharging pipeline on the two sides by a liquid conveying pump.