345 results about "Temperature drop" patented technology

A liquid immersion cooling system, that cools a heat generating body provided on a substrate, includes: a cooling device main body having a casing that houses the substrate and the heat generating body inside and stores a refrigerant for cooling the heat generating body; a circulation flow channel having both ends connected to each other in a communication state in the casing; an adsorption unit that is provided in the circulation flow channel and adsorbs impurities from the refrigerant circulating in the circulation flow channel; a pump that circulates the refrigerant in the circulation flow channel; and a control device that controls the pump. The control device includes a temperature drop detection unit that detects a decrease in temperature of the refrigerant in the casing, and a pump drive unit that drives the pump based on a detection of the temperature drop detection unit.

The invention relates to the technical field of asphalt, and particularly discloses modified asphalt for drilling fluid and a preparation method of the modified asphalt, and the modified asphalt comprises the following components in parts by weight: 100 parts of matrix asphalt, 12-15 parts of sulfonated modified monomer, 3-5 parts of zwitterionic modified monomer, 2-3 parts of crosslinking modifier, 3-5 parts of environment-friendly activating aid, 2-4 parts of neutralization regulator and 90-110 parts of deionized water. The preparation method comprises the following steps: firstly, melting and activating the matrix asphalt, and adding the environment-friendly activating aid to prepare the activated asphalt; carrying out gradient heating, and adding a sulfonated modified monomer, a zwitterionic modified monomer and a cross-linking modifier step by step to complete composite cross-linking modification; and finally, cooling, adding a neutralization regulator to adjust the pH value, adding deionized water, performing high-speed shearing and homogenizing, and cooling to obtain a finished product. The modified asphalt is stable and controllable in viscosity, excellent in high and low temperature filtration loss control performance, adaptive to complex drilling working conditions, environment-friendly in process and easy to implement.

The invention discloses an asphalt paving construction control system and method based on temperature field analysis, and relates to the technical field of road engineering construction, and the system comprises a temperature field monitoring module which is used for obtaining the temperature information of different positions of an asphalt paving surface, and constructing a three-dimensional temperature field with absolute position information; the multi-source environment information acquisition module is used for acquiring current environment information; the temperature field processing and temperature drop prediction module is used for dividing the three-dimensional temperature field into a plurality of grid units, predicting the future temperature of each grid unit in combination with the current environment information, and predicting the residual effective rolling time required for reducing the temperature to the critical temperature; the segregation risk intelligent diagnosis module is used for carrying out risk judgment according to the gridded temperature field; and the rolling strategy dynamic decision module is used for calculating a rolling scheme for each grid according to the current temperature, the remaining effective rolling time and the risk judgment result of each grid. According to the invention, real-time quality diagnosis, prediction and closed-loop dynamic control of asphalt paving construction can be realized.

The invention discloses an application of a BOPP (Biaxially-oriented Polypropylene) film in preparation of a draw-bar box shell, and the draw-bar box shell with a multi-layer composite structure is formed by compounding a multi-layer BOPP film serving as a main body layer and a lining layer through a hot press molding process. According to the invention, the BOPP film commonly used in the packaging field is creatively applied to the box body structural member, the BOPP film lamination hot press molding replaces the traditional PP injection molding process, and the modular design of the combined layer structure and the collaborative innovation of the hot press process are combined, so that the prepared draw-bar box shell realizes the balance of high strength and light weight, and has no cracking phenomenon when falling at a low temperature of-30 DEG C, and the service life of the draw-bar box shell is prolonged. The low-temperature performance is excellent, and meanwhile, the production suitability and the color control precision are improved.

The invention discloses a compression system end area flow regulation and control method based on blade inner cooling under a low Reynolds number. Firstly, through calculation or measurement, a compression system end area three-dimensional flow field under different Reynolds numbers is obtained, and the end area loss variation degree is quantified. Then, revealing regulation and control rules of different isothermal cooling wall surface conditions on near-wall fluid physical property parameters, boundary layer growth rate and end region secondary flow migration intensity under a low Reynolds number, and establishing a correlation model of end region loss reduction and efficiency improvement and wall surface cooling intensity; and on the basis, a blade built-in convection cooling channel structure is designed, the cooling channel and blade surface flow heat characteristics are analyzed based on a conjugate heat transfer method, and inner cooling channel structure parameters are optimized until the wall surface temperature drop amplitude meets the preset requirement. And finally, checking the wall surface cooling effect, and measuring end region performance parameters during inner cooling regulation and control under a low Reynolds number to complete scheme verification. By introducing blade inner cooling, the flow characteristic of an end region can be remarkably improved on the premise that the structural complexity is not increased as much as possible, and stable and efficient operation of a compression system under the low Reynolds number is guaranteed.

The application provides a preparation method of a liquid crystal elastomer foam doped with boron nitride, comprising the following steps: 1) preparation of a NaCl salt template; 2) preparation of a liquid crystal elastomer monomer solution: a liquid crystal elastomer monomer solution is prepared by adding a sufficient amount of a toluene solution into 1,4-bis-[4-(3-acryloyloxypropoxy)benzoyloxy]-2-methyl benzene RM257 as a liquid crystal unit; 3) formation of a liquid crystal elastomer network; 4) preparation of a pre-crosslinked liquid crystal elastomer foam; 5) deformation programming of the liquid crystal elastomer foam: the pre-crosslinked liquid crystal elastomer foam is placed into the template for constant compression, and secondary crosslinking is performed using ultraviolet light under the constant compression state to form a secondary crosslinking network; at this time, the liquid crystal elastomer foam has a thermoreversible deformation characteristic, which is manifested as expansion at a temperature rise and shrinkage at a temperature drop, and the process cycle is reversible; and 6) preparation of a liquid crystal elastomer / heat-conducting BN composite foam.

The invention relates to a preparation method of a high-quality EB evaporation target, and relates to the field of target preparation, and the preparation method comprises the following steps: loading a powder raw material into a cleaned crucible, and pre-compacting to obtain a pre-compacted crucible; putting the pre-compacted crucible into spark plasma sintering equipment, vacuumizing and pressurizing, starting auxiliary heating to raise the temperature to a thermal shock buffer temperature, stopping auxiliary heating, introducing current to raise the temperature to a sintering densification temperature, preserving heat, stopping introducing current, starting auxiliary heating to carry out speed-controlled cooling, and cooling to a stress safety cooling threshold value, so as to obtain the high-temperature-resistant and high-pressure-resistant crucible. And transferring into a program control cooling system for cooling, removing the crucible, cleaning and drying to obtain the high-quality EB evaporation target material. The prepared target material has high density and mechanical strength, internal stress is relieved, good evaporation stability and film layer uniformity are shown in the electron beam physical vapor deposition process, and the finally obtained coating is compact in structure and has high hardness and high adhesive force.

The invention relates to the technical field of LED module preparation, and discloses a display module capable of preventing elevation low-temperature falling dead lamps and preparation equipment thereof.The display module comprises a structure body, the four corners of the structure body are all inclined planes, a mounting space is formed in the middle of the structure body, a light guide plate is pasted in the mounting space, and LED lamps are connected to the periphery of the light guide plate; positioning blocks are arranged at the positions, adjacent to the slopes, in the periphery of the mounting space, the cross section of each positioning block is in a right trapezoid shape, the right-angle direction faces the light guide plate, two side plates are further arranged on the two sides of the structure body, and square and long and thin rectangular openings are symmetrically formed in the connecting positions of the two side plates and the structure body from inside to outside and used for locking the light guide plate after the side plates are bent. Through the design of the inclined planes at the four corners of the structure main body, the positioning blocks in the mounting space and a side plate bending and locking mechanism, displacement of the light guide plate under high-pressure impact is limited jointly, and damage caused by the fact that the light guide plate impacts an LED lamp is avoided.

To provide a heat retention device that can further suppress the temperature drop of the fluid in the discharge duct of a heat exchanger. [Solution] A heat retention device 10 is provided in the discharge line of a heat exchanger 3 that utilizes the exhaust from a burner 2, and is connected to the discharge port 3a of the heat exchanger 3 and includes a discharge duct 4 that transports the fluid discharged from the discharge port 3a to the point of use, and an electric heater 5 is attached to at least a part of the discharge duct 4, and the electric heater 5 heats the fluid passing through the discharge duct 4.

The utility model discloses a Gleeble vacuum melting equipment device, which comprises a Gleeble main machine with a pressure head and a vacuum chamber, a melting device and a clamping and fixing device are further arranged in the vacuum chamber, and the melting device is connected to the pressure head through the clamping and fixing device. According to the smelting equipment disclosed by the utility model, the Gleeble thermal simulation testing machine is fully utilized, and the alloy can be quickly and conveniently smelted and new technological parameters of alloy smelting can be explored by controlling temperature rise and temperature drop at different temperatures and speeds in an experiment process, so that the time is saved, and the waste of materials is also reduced.

The utility model provides a fermentation unit which comprises a cold and hot water tank, a fermentation tank, a control box and a water return box, the cold and hot water tank is divided into a cold water tank and a hot water tank by a heat insulation plate, an electric heater is arranged in the hot water tank, and a hot water outlet is formed in the bottom of the side wall of the hot water tank; the fermentation tank comprises a tank body, a temperature measuring opening is formed in the tank body, a temperature measuring meter is installed on the temperature measuring opening, a heat exchange belt with a rectangular cross section is welded to the outer side wall of the tank body, the heat exchange belt is spirally wound around the outer side of the tank body from top to bottom, a heat exchange inlet is formed in the bottom end of the heat exchange belt, and a heat exchange outlet is formed in the top end of the heat exchange belt. The heat exchange inlet is communicated with the hot water outlet and the cold water outlet through an electromagnetic valve, and the heat exchange outlet is communicated with the water return tank; and the thermodetector and each electromagnetic valve are electrically connected with the control box. Through the synergistic effect of the control box, the thermodetector and the plurality of electromagnetic valves, rapid switching between temperature rising and temperature falling is realized, and the flexibility of the fermentation process is improved.

The invention belongs to the technical field of data processing, and relates to a terrestrial heat-to-well production and injection system thermal breakthrough time calculation method based on temperature drop constraint, which comprises the following steps: acquiring terrestrial heat-to-well production and injection data, and inputting the terrestrial heat-to-well production and injection data into a thermal breakthrough time calculation model, obtaining thermal breakthrough time calculation results of terrestrial heat on the well exploitation and irrigation system under different exploitation and irrigation amounts, exploitation and irrigation well spacing and allowable temperature drop conditions; wherein the thermal breakthrough time calculation model is obtained by combining a thermal breakthrough time analysis framework based on allowable temperature drop constraint with an energy conservation principle. Based on the principle of conservation of energy, namely the first law of thermodynamics, a thermal breakthrough time calculation model of the mining well is deduced on the basis that the temperature of the mining well is allowed to be reduced to a certain extent, the thermal breakthrough occurrence time of the mining well is accurately predicted, and therefore a scientific basis is provided for optimization design of a geothermal-to-well mining and injection system; the purposes of prolonging the service life of a geothermal system, improving the exploitation efficiency of geothermal resources and guaranteeing sustainable development of medium-deep geothermal resources are achieved.

The application provides a heating control method and device, a temperature controller, a semiconductor device and a medium, and relates to the field of control. When there is a firmware upgrade requirement for a target temperature controller, a first temperature control program is started to control the working of a heating component, and then the firmware upgrade of the target temperature controller is performed. During the firmware upgrade of the target temperature controller, the heating component can perform heating work based on the first temperature control program, so that the temperature drop of a heating object is avoided. Before the first temperature control program is started, the current control parameters of the target temperature controller are determined. After the firmware upgrade of the target temperature controller is completed, the normal working control of the heating component is restored according to the pre-determined control parameters and a second temperature control program. Through the setting and starting of the first temperature control program, the temperature drop of the heating object is effectively avoided, so that the problem that the internal region of the semiconductor device and the like is polluted due to the temperature drop is prevented, the normal implementation of the CVD process is ensured, and the increase of the process implementation cost and the reduction of the efficiency are avoided.

The invention relates to the technical field of loudspeakers, and provides a method, equipment and a chip for controlling the output power of a loudspeaker. In the method, temperature states of a loudspeaker are fed back to a controller, and gain processing is performed on each temperature state, for example, gain processing is performed on a difference value between a first temperature of a voice coil at a first moment and a temperature threshold value based on a first gain; the fourth temperature is obtained by performing gain processing on the first decrease amount of the temperature of the voice coil from the first moment to the second moment based on the second gain, and the fifth temperature is obtained by performing gain processing on the second decrease amount of the temperature of the magnetic steel from the first moment to the second moment based on the third gain, so that the output power is obtained. And burning of the voice coil caused by the fact that the temperature of the loudspeaker exceeds the temperature threshold can be avoided.

The invention provides a method and a system for automatically taking and placing a cover plate in a thermal-state shell transfer process, relates to the technical field of casting machinery, and aims to solve the problems of low operation efficiency, poor safety and insufficient automation level of manual cover plate taking and placing in related technologies. The method comprises the following steps: step S110, executing a cover plate taking preparation control flow, and step S120, executing a cover plate taking preparation control flow; and step S130, executing an automatic cover plate taking control process, and step S130, executing a cover plate placing and recycling control process. Through full-automatic time sequence control and negative pressure adsorption state feedback, the uncertainty of thermal state shell temperature drop is remarkably reduced, the occurrence rate of casting shrinkage porosity and cold shut defects is reduced, and meanwhile complete unmanned cover plate taking and placing operation in the high-temperature environment is achieved.

The invention provides an inert gas replacement packaging method for curved photovoltaic glass for an automobile and an inert gas replacement packaging device for the curved photovoltaic glass for the automobile, and relates to the technical field of photovoltaic module packaging. The method comprises the following steps: pretreatment: drying a curved-surface perovskite photovoltaic module and an adhesive film by using dry high-temperature inert gas; the dried adhesive film is laid on the surface of the curved-surface perovskite photovoltaic module, and it is ensured that the adhesive film and the curved-surface perovskite photovoltaic module are tightly attached without wrinkles; inert gas replacement: putting the laminated assembly into a packaging cavity, introducing inert gas into the packaging cavity, and exhausting air in the cavity at the same time; pressurizing, heating and packaging: performing pressurizing and heating treatment on the component in the packaging cavity in an inert gas atmosphere, so that the adhesive film is melted and is tightly combined with the curved-surface perovskite photovoltaic component; and cooling and shaping, stopping heating, keeping the pressure unchanged, and cooling the packaged assembly until the temperature of the assembly is reduced to room temperature, thereby completing packaging.

This invention relates to the field of clean steel smelting technology, specifically to a multi-channel turbulence controller and a continuous casting tundish. The multi-channel turbulence controller is a multi-channel diversion energy-dissipating turbulence controller, comprising a controller body and an internal hollow chamber. The controller body has a hollow chamber with an upper outlet at its center. Around the upper outlet, 4-8 vertically penetrating flow holes are arranged symmetrically around its perimeter. This invention enhances the mixing of the flow stream and the molten pool through the diversion effect of the multi-channel flow, consumes the turbulent kinetic energy of the returning molten steel, and significantly reduces the vertical upward backflow impact of the molten steel by utilizing the mutual interference of the flow streams. This stabilizes the slag-metal interface, fundamentally suppresses slag porosity formation during unsteady casting, reduces molten steel temperature drop, secondary oxidation, and slag entrapment, inhibits the formation of endogenous inclusions, alleviates crystallizer nozzle blockage, improves molten steel temperature uniformity, and enhances billet cleanliness and continuous casting production stability. It features a simple structure, convenient processing, and ease of industrial application.

The invention discloses a ship ventilation structure with high protection performance, and relates to the technical field of ship ventilation, the ship ventilation structure comprises a window frame, a window body and a storm cover, the window frame is fixedly connected to a ship body, the window body and the storm cover are movably connected to the window frame, and the window frame, the window body, the window frame and the storm cover are fixed through fixing assemblies. Part of the window body extends into the window frame, the inner side of the window body is fixedly connected with an abutting ring, and the inner side of the window frame is fixedly connected with a water retaining strip. When entering the inner side of the window frame and the connecting position of the window frame and the window body, rainwater or seawater flows downwards into the drainage groove under the action of gravity and is drained out of the window frame, so that the situation that much water is accumulated at the lower position of the inner side of the window frame and the connecting position of the window frame and the window body, and a thick ice layer is formed along with temperature reduction is avoided as much as possible; and the connecting position of the window frame and the window body is tightly bonded, and the opening difficulty is large.

The invention provides a gas water heater control method and a gas water heater, and belongs to the technical field of water heaters. The method comprises the steps that when it is detected that the gas water heater is started for the second time within the preset duration after water is turned off, the current water flow of water entering a water inlet pipe is obtained; if the current water flow is smaller than or equal to the preset flow threshold value, only the bypass valve is opened, and heat energy stored in the heat exchanger and the water mixing tank can meet the notch load requirement in the heating blank period; and if the current water flow is larger than the preset flow threshold value, the bypass valve is opened, and the flow limiting valve is controlled to be switched to the flow limiting state. After the flow limiting valve limits the flow, more cold water directly cools superheated water in the heat exchanger through the bypass pipeline, and the initial temperature rise is restrained; and moreover, the flow of cold water entering the heat exchanger is reduced, and the notch load requirement in the heating blank period is remarkably reduced, so that heat energy stored in the heat exchanger and the water mixing tank can meet the notch load requirement in the heating blank period as much as possible, the temperature drop condition is greatly reduced or eliminated, and the user experience is improved.

The invention relates to the technical field of computer aided design, in particular to a cold chain refrigeration system parameter design optimization system which comprises the steps of extracting temperature difference, flow velocity and pressure offset characteristics, recognizing abnormal point locations and determining regulation and control sections, calculating change rate overlapping areas to form a sorting map and a matching device response deviation obtaining and updating component. And outputting a structure combination verification result to form an optimized arrangement diagram group. According to the method, high-frequency offset characteristics of temperature difference, flow velocity and pressure sudden change are extracted, abnormal points are recognized through synchronous trend comparison, a sequencing map is output through coincidence measurement and calculation of liquid velocity slope, temperature drop gradient and load change, action stepping reasonability is evaluated according to throttling response deviation, device recognition and structure regulation and control verification are completed, and device recognition and structure regulation and control verification are completed. Accurate positioning and structure optimization of response mismatching sections are achieved, and the regulation and control efficiency and operation stability of the system under multi-parameter coupling are improved.

The utility model discloses an all-in-one computer which is characterized in that the all-in-one computer comprises a computer mechanism, the computer mechanism comprises a main frame shell, a clamping assembly and a heat dissipation assembly, and the clamping assembly is connected with the bottom of the inner wall of the main frame shell in a sliding mode through a sliding rail. Heat generated by hardware is transferred to the metal fixing plate in contact with the hardware through operation of a computer, the metal fixing plate adopts a copper conduit, the heat is quickly transferred to all positions of the metal fixing plate due to high thermal conductivity of copper, and the cooling fan starts to operate; heat on the metal fixing plate is discharged through heat dissipation openings in the left side of the main frame shell and the right side of the right side plate, a temperature sensor at the top monitors the temperature in the main frame shell in real time, when the temperature rises, the temperature sensor sends a signal to control the heat dissipation grating to increase the opening and closing angle and accelerate hot air discharging, and when the temperature drops, the temperature sensor sends a signal to control the heat dissipation grating to increase the opening and closing angle. The opening and closing angle of the heat dissipation grating is reduced, the internal temperature is kept stable, and the reliability of the equipment is improved.

The application discloses a preparation method of a 1.5mm hot-rolled 800MPa-grade weather-resistant photovoltaic support steel in the field of hot-rolling steel production, and the method comprises the following steps: adopting a steel grade component with 800MPa-grade weather resistance, controlling the thickness and length of the steel casting blank; adopting a hot feeding and hot charging mode for heating; rough rolling and finish rolling are carried out; laminar cooling is carried out on the steel strip after finish rolling; and finally, coiling is carried out. The application adopts a plate blank with a proper length, which is beneficial to reducing the temperature difference of the intermediate blank and the head and tail of the steel coil, the hot feeding and hot charging mode is adopted for heating, the core temperature of the plate blank can be improved, the rolling is stable, the rough rolling is carried out for four passes, the temperature drop at the entrance of the finish rolling is further reduced, and through reasonable control of the rolling speed, the plate crown, the loop amount, the bending force and the roll shifting amount and other processes in the finish rolling process, the 1.5mm thick hot-rolled steel plate has the advantages of good rolling stability, good weather resistance and excellent comprehensive performance, and the production efficiency and the yield of the extremely thin gauge hot-rolled high-strength weather-resistant steel plate can be improved.

The invention discloses a solid waste-based micro-nano radiation cooling coating and a preparation method thereof.The preparation method comprises the steps that fly ash and coal gangue serve as main solid waste raw materials, and after being subjected to ultra-fining and silane modification, the main solid waste raw materials and a phosphate exciting agent are subjected to chemical action to form an inorganic micro-nano gel matrix; nano-silica (SiO2) and barium sulfate (BaSO4) are cooperatively introduced as a spectrum regulation functional filler, and a multi-scale scattering structure and an intermediate infrared radiation channel are constructed, so that the radiation cooling effect of high solar reflectivity and high infrared emissivity is realized. The prepared coating has excellent spectral selectivity (the solar reflectivity is larger than or equal to 0.88, and the mid-infrared emissivity is larger than or equal to 0.95), high weather resistance (the 500-hour ultraviolet aging retention rate is larger than or equal to 95%) and remarkable passive cooling capacity (the temperature drop can reach 5-8 DEG C). The raw materials are wide in source, the preparation process is simple, a large amount of building solid waste or industrial solid waste can be utilized, the low-cost and high-performance green radiation cooling coating is achieved, and a technical path capable of being popularized on a large scale is provided for building outer wall energy-saving transformation and urban heat island relieving.

The invention relates to the technical field of extrusion dies, in particular to a high-strength aluminum alloy extrusion die temperature compensation system which comprises a divergent die, a die holder and a die body, a plurality of divergent bridges are arranged on the divergent die, a die core is arranged in the middle of the divergent die, the divergent bridges are all connected with the die core, and the die holder is coaxially connected to the front end face of the divergent die through bolts; the water pressing groove is formed in the front end of the die holder, the section of the water pressing groove is designed to be in the frustum shape, and cooling liquid entering the water pressing groove flows from the front end to the rear end, so that the cooling effect on the front end of the forming part is higher than that of the rear end, and the situation that the extrusion forming speed of a high-strength aluminum alloy profile is affected due to temperature reduction is avoided; and meanwhile, the problem that the strength of the high-strength aluminum alloy profile is reduced due to the fact that the grain structure in the high-strength aluminum alloy is suddenly changed due to temperature suddenly changing of the high-strength aluminum alloy profile in the extrusion direction is solved, the physical property of the profile is guaranteed, and meanwhile the surface quality of the profile is guaranteed.

The utility model relates to a structure for accelerating the environmental cooling rate in a cavity and enhancing the temperature uniformity. The structure comprises a box body, the inner side wall of the box body is connected with blades, the inner side wall of the box body is connected with a storage rack, the bottom face of the box body is connected with an evaporation plate, the blades are located above the storage rack, and the lower end face of the storage rack is connected with a flow guide plate. The front end of the box body is connected with the box door. The number of the blades can be multiple. And the blades are connected with a variable frequency motor. A heat preservation layer is arranged on the outer wall of the box body. And a blade housing is arranged on the outer side of the blade. And the evaporation plate is connected with a refrigerant conveying pipe. The utility model aims to overcome the defects in the prior art, and provides the structure for accelerating the environment cooling rate in the cavity and enhancing the temperature uniformity, so that the temperature reduction rate in the cavity is accelerated; and the uniformity of the temperature in the cavity is enhanced.

The invention relates to the technical field of rod and wire production processes, in particular to a continuous casting direct rolling rod and wire billet hot delivery process line and method. According to the process line, a post-cutting heat preservation roller way, a temperature sorting unit with a lifting baffle and a steel shifting machine, a main conveying roller way, a flow dividing unit with a temperature compensation device and a pre-rolling checking unit are sequentially arranged between a continuous casting machine and a rod and wire roughing mill. According to the real-time temperature, the materials are intelligently sorted into direct hot delivery, on-line temperature compensation or elimination cooling; the whole process is coordinated by an automatic control system, qualified blanks with the most urgent temperature are conveyed preferentially according to rolling mill requirements and blank temperature data, and the problems of large temperature drop and uneven temperature in the hot delivery process of the continuous casting blanks are solved to a certain extent; accurate temperature control and efficient conveying of blanks are achieved, and the direct rolling rate, the production continuity and the energy utilization rate are remarkably improved.

The invention discloses a synchronous test device and method about a heat exchange temperature field and structural deformation, and belongs to the technical field of air valve heat fluid-solid coupling test equipment.The synchronous test device comprises a temperature rise section, a test bin, a temperature drop section and a tracing release device, the front end of the temperature rise section is connected with the test bin, and the top of the test bin is provided with a laser scanner; the temperature drop section is used for displaying tracer particles, an axial flow fan is arranged in the temperature drop section and used for driving airflow to circularly flow in the device, the heat conduction liquid is located in the temperature drop section, meanwhile, the axial flow fan is immersed in the heat conduction liquid, the heat conduction liquid is used for absorbing heat in the temperature rise section so that the temperature of the heat conduction liquid can be increased, and the temperature rise section is used for increasing the temperature of a flow field in the device. Therefore, the actual working condition of the air valve is simulated. During use, the axial flow fan can convert heat into electric power through the thermoelectric effect to drive the axial flow fan to operate, and due to the fact that the speed increasing pipe is communicated with the axial flow fan, tracer particles flow through the heat exchanger air valve after being heated through the temperature rising section so as to display the specific state of a flow field.

The invention belongs to the technical field of temperature control, and particularly discloses an intelligent temperature control system and method for an optical communication prototype facing an extreme environment, and the system comprises a micro-control module, a temperature sensing module and a control output module which are in communication connection. The temperature sensing module is used for monitoring a prototype cavity temperature signal, an in-cavity environment temperature signal and a device surface temperature signal of the optical communication prototype in an extreme environment in real time; the extreme environment comprises a high and cold environment, a high-temperature and high-humidity environment and a deep-sea high-pressure environment; the micro-control module is used for receiving the temperature signals of the temperature sensing module, performing data signal preprocessing on the temperature signals and generating a temperature control instruction according to a preset temperature control strategy; and the control output module is used for receiving the temperature control instruction to execute heating and cooling functions so as to realize temperature regulation and control of the optical communication prototype. According to the invention, normal work of the optical communication prototype in an extremely severe environment can be realized.

The present application discloses an oil stain detection method, device, equipment and storage medium. The method includes: during the process of heating the to-be-detected cavity to thermal equilibrium, collecting multiple frames of temperature rise data at a preset frequency; determining the temperature rise slope data of multiple pixel points based on the multiple-frame pixel temperature rise data of the multiple frames of temperature rise data; during the process of cooling the to-be-detected cavity to thermal equilibrium, collecting multiple frames of temperature drop data at a preset frequency; determining the temperature drop slope data of multiple pixel points based on the multiple-frame pixel temperature drop data of the multiple frames of temperature drop data; determining the temperature change gradient data of multiple pixel points based on the temperature rise slope data and the temperature drop slope data; determining multiple oil stain edge pixel points among the multiple pixel points based on the temperature change gradient data. The calculation is simple and the cost is low. At the same time, infrared detection has good anti-interference performance and can accurately detect the oil stain situation in the steam environment of the steam oven.

The invention provides a method and system for accurately controlling the temperature of an adhesive production reaction kettle, and relates to the technical field of adhesive production, and the method comprises the steps: applying a transient heating pulse to the reaction kettle in adhesive production, collecting the surface temperature data of a container wall, processing the data, calculating a temperature decline curve, and extracting key information of heat transfer characteristics. A heat abnormal area caused by uneven mixing is identified based on spatial distribution of key information, and the thermal state change of the adhesive reaction degree is estimated in combination with a time change mode. And adjusting a heating pulse mode and a working state of the stirring device according to the abnormal area and the change mode, and introducing a pause detection stage to collect surface temperature feedback under weak heating pulses so as to confirm an adjustment effect. And finally, associating the key information with the reaction degree based on feedback to generate a temperature adjusting command, and adjusting the heating or cooling intensity, so that accurate control on the temperature of the reaction kettle can be realized, and the production quality and efficiency are improved.