132 results about "Cooling temperature" patented technology

The invention relates to the technical field of plastic molding, in particular to a plastic pad extrusion molding cooling device which comprises a vertical frame, a fixed cylinder, a roller, a spiral sleeve and a detection assembly. The roller is divided into a plurality of cooling cavities for independently supplying water, water is supplied to the cooling cavities at the same time, the problem of uneven cooling caused by water flowing is solved, the spiral sleeve forcibly cools water to form turbulent flow, and compared with smooth laminar heat exchange, the cooling efficiency is improved, and the service life of the roller is prolonged. Then, the cooling temperature is detected in real time by means of the detection assembly, external supplementary cooling is conducted according to the situation, and therefore the mode that water is independently supplied to the multiple cooling cavities for turbulent cooling and matched with external supplementary cooling is formed, and the uniform cooling degree of the plastic pad is comprehensively improved; and the quality problems of buckling deformation, sinking, shrinkage and the like of the plastic pad caused by non-uniform cooling are avoided.

An additive manufacturing method includes a heating step, a manufacturing step, a cooling step, a cutting step, a first correction step, and a second correction step. In the heating step, a build table is heated to a preheating temperature. In the manufacturing step, a solidified layer is formed. In the cooling step, the build table is cooled to a cooling temperature. In the cutting step, a cutting process is performed on the solidified layer. In a first correction step executed after the heating step and before the manufacturing step, a positional misalignment of the base plate is measured, and a coordinate system used in the manufacturing step is corrected. In a second correction step executed after the cooling step and before the cutting step, a positional misalignment of the base plate is measured, and a coordinate system used in the cutting step is corrected.

The invention provides a liquid nitrogen cooling system for maintaining continuous infiltration of the upper surface of a cold cavity. The liquid nitrogen cooling system comprises a liquid nitrogen Dewar, a gas-liquid separator and a cooling temperature control cavity, wherein the liquid nitrogen Dewar is used for providing low-temperature liquid nitrogen; one end of the gas-liquid separator is connected with the liquid nitrogen Dewar through a liquid-phase pipeline, the bottom of the other end of the gas-liquid separator is connected with the cooling temperature control cavity through a liquid-phase pipeline, and the top of the gas-liquid separator is connected with a gas-phase pipeline for exhausting gas; a temperature sensor and an acoustic emission probe are mounted in the cooling temperature control cavity, the temperature sensor is used for monitoring the wall surface temperature change of the cooling temperature control cavity in real time, and the acoustic emission probe is used for monitoring a high-frequency elastic wave signal in the cooling temperature control cavity; the wetting state of the upper surface of the cooling temperature control cavity can be judged, so that liquid nitrogen on the surface of the cooling temperature control cavity is conveniently controlled, the cooling temperature control cavity is prevented from entering a dry condition, and the liquid nitrogen heat exchange efficiency is improved.

The heat treatment equipment comprises an inner furnace body, an outer furnace body, a vacuumizing component, a heating temperature control component, a cooling temperature control component, a heat exchange component, a fan component and a spray cooling component, all the parts are specifically arranged, particularly, the heating parts which are arranged in the heating stage and the heat preservation stage and are arranged for the shaft elements, independent control over all the areas and independent control over all the areas of the spray nozzle are adopted, and the specific arrangement mode in the heat treatment process is combined; particularly, high-pressure inert gas quenching and atomized cooling liquid composite cooling are combined, and independent control of a spray nozzle is matched, so that more uniform and reliable heating, heat preservation and quenching of the shaft element are realized, and the fatigue life and the dimensional stability of the shaft element are remarkably improved.

The application discloses a control method for cooking rice by a cooking utensil and the cooking utensil. The cooking utensil comprises an inner container for cooking rice, a heating device, a temperature sensor and a fan. The control method comprises a low-temperature water absorption stage, a heating temperature rising stage, a boiling stage, a high-temperature rice stewing stage and a fan cooling temperature reducing stage. The boiling stage comprises at least one boiling gradient control stage. In the boiling gradient control stage, the heating device is controlled to heat the bottom temperature of the inner container, so that the temperature rising rate of the bottom temperature of the inner container is in a required rate range. After the bottom temperature of the inner container reaches a boiling gradient temperature detected by the temperature sensor, the heating device and the fan are jointly controlled to maintain the bottom temperature of the inner container. When the time length during which the bottom temperature of the inner container is at the boiling gradient temperature is greater than a preset gradient stage time length, the heating device is turned off, and the fan is controlled to work, so that the bottom temperature of the inner container returns to an initial bottom temperature of the initial boiling stage.

The invention relates to a solution dehumidification evaporation cooling-water machine for a liquid cooling data center, which comprises an air filtering unit, a solution dehumidification unit, an evaporation cooling unit, a solution concentration regeneration unit, a heat exchange unit and an air supply unit, and is characterized in that the air filtering unit is used for filtering external air; the solution dehumidification unit is used for carrying out dehumidification treatment on ambient air in a solution dehumidification mode; the evaporative cooling unit is used for cooling the internal thermal circulating water to obtain cold water; the air supply unit is used for discharging air entering the air supply unit, and the solution concentration and regeneration unit is used for evaporating and concentrating the dehumidification solution with reduced concentration and then recycling the dehumidification solution; the heat exchange unit is used for carrying out secondary heat exchange cooling on external hot water by utilizing cold water obtained by the evaporative cooling unit; high-temperature cooling return water of the liquid cooling data center is used as heat to evaporate and concentrate a diluted solution, and then low-temperature cooling water generated by indirect evaporation of a cooling-water machine is used for carrying out secondary heat exchange on the high-temperature cooling water, so that the temperature requirement of cooling is met.

A cooling system (RS) includes a vacuum insulation container (4), an object to be cooled (3), a cryogenic refrigerator (CR), a thermal conduction connector (TC), a temperature sensor (TS), current leads (D1, D2), and a controller. The temperature sensor detects the temperature of one of the object to be cooled, a cold stage, the thermal conduction connector, and the current leads. The controller performs an operation stop process to stop operation of the cryogenic refrigerator in a case in which, while the cryogenic refrigerator is operating, the temperature detected by the temperature sensors drops to a predetermined target cooling temperature, and an operation start process to start operation of the cryogenic refrigerator in a case in which, while operation of the cryogenic refrigerator is stopped, the temperature detected by the temperature sensor rises to a predetermined operation start temperature that is higher than the predetermined target cooling temperature.

Typically, electric power sources, such as batteries and fuel cells, require cooling to temperatures near or below ambient temperature for safe and efficient operation. Traditional cooling systems are not be able or practical to cool the components to the required temperatures, due to the lack of temperature differential between the required cooling temperature and the ambient temperature, which drives the heat transfer. Disclosed embodiments optimize the efficiency of a cooling system based on ambient conditions. In particular, embodiments determine input parameters from one or more sensed parameters, such as ambient temperature and ambient pressure, and utilize these input parameters in a process that maximizes the operation of cooling units in the most efficient mode.

A cooling and molding apparatus for carbon-carbon composite materials relates to the field of composite material manufacturing technology, addressing the problem in existing technologies where precise control of cooling temperature is difficult, easily leading to stress concentration within the carbon-carbon composite material. The apparatus includes a cooling cylinder with a cover at its top, the top of which is connected to a gas storage cylinder via a gas supply pipe. An inlet pipe and an outlet pipe are fixedly connected to the outside of the cooling cylinder. The inlet pipe is connected to a cold water tank via an inlet pump, and the outlet pipe is connected to a first water storage tank via an outlet pump. Both the cold water tank and the first water storage tank are housed within the machine body, which also contains a second water storage tank. A main control device is connected to the side wall of the machine body. The advantages are: it allows the cooling process to be divided into multiple stages and dynamically adjusts the cooling water flow rate, avoiding stress concentration during the cooling process.

The utility model discloses a kind of secondary zinc oxide settling chamber dust circulating devices, comprising: settling chamber;Dust cooling pond, the dust cooling pond one side is equipped with closed air auger conveyor, the discharge outlet of the bottom of settling chamber is communicated with dust cooling pond by closed air auger conveyor;Secondary zinc oxide raw material bin, bag-type dust collector is equipped on the secondary zinc oxide raw material bin, the air inlet end of bag-type dust collector is connected with conveying pipeline, the feeding end of the conveying pipeline is located at the bottom of dust cooling pond;Cooling temperature measuring assembly, the cooling temperature measuring assembly is used to carry out cooling temperature measurement to remote, the cooling temperature measuring assembly is equipped on dust cooling pond.The beneficial effects of the utility model are that cooling temperature measuring assembly is used to cool dust, dust can be fully contacted with cooling temperature measuring assembly, can discharge the heat of dust in time, reduce cooling time, improve cooling efficiency, can measure the temperature of dust of different depth, improve measurement precision.

The present application discloses a kind of extra-thick stainless steel composite plate and its preparation method.In the method, first, the composite blank with the stacking order of base material, composite material, composite material and base material is prepared; then, the obtained composite blank is heated, and the soaking temperature is 1170-1220 DEG C; two-stage controlled rolling of rough rolling+finish rolling is used to obtain the composite plate big plate with thickness ≥54 mm; then, intermittent cooling is carried out: when the composite plate big plate passes through the ultra-fast cooling system, the opening and closing state of 24 groups of cooling headers is controlled according to the mode of opening N groups of cooling headers and then not opening M groups of cooling headers, the cooling water pressure is 0.2 MPa, the cooling speed is 3-15 DEG C / s, the final cooling temperature is 380-450 DEG C, and the roller speed is 0.2-0.4 m / s; wherein N and M are 2, 3 or 4; the composite plate big plate passes through the ultra-fast cooling system once, which completes the intermittent cooling, and then is naturally cooled to room temperature on the cooling bed.

This invention relates to the field of metallurgical technology, specifically to an ultra-low yield strength ratio, high-phosphorus, atmospheric corrosion-resistant steel and its preparation method. The preparation method includes: placing a cut billet into a slow-cooling pit, with the initial slow-cooling temperature ≥500℃ and the final slow-cooling temperature not lower than 300℃; heating the slow-cooled billet, controlling the billet's exit temperature from the furnace to 1140~1170℃, and the furnace time coefficient to be 10~11 min / cm; employing a two-stage rolling process, with the billet undergoing the first stage of rolling after descaling, and the surface temperature of the rolled piece at the start of the second stage of rolling being T2=(T+1600 / H-1.8H)℃, and the rolled steel plate not being water-cooled; and then placing the rolled steel plate between steel plates at 500~600℃ for at least 48 hours to achieve stacking cooling. This invention utilizes a fine, uniform microstructure and phosphorus and chromium compounds to improve the material's corrosion resistance, meeting the requirements for corrosion resistance and high toughness of steel used in building and engineering structures in coastal atmospheric environments.

The application discloses a heat exchange device and a particulate matter forming device, and belongs to the technical field of heat exchange. The heat exchange device comprises a circulating module, a heat exchange module and a guide assembly. The circulating module comprises a supporting seat, a cooling water tank and a circulating pipeline. The cooling water tank is composed of a falling water section, a cooling section and a circulating sinking box distributed in sequence from left to right. The guide assembly comprises a fixed material guide plate and a metal partition plate. The fixed material guide plate is fixedly installed in the middle of the cooling section. A plurality of metal partition plates are fixedly installed on the fixed material guide plate at equal intervals. A plurality of through holes are uniformly formed on the fixed material guide plate at equal intervals. The heat exchange module comprises a heat exchange pipeline, a communication pipe, an electromagnetic valve and a thermometer. In the above manner, the material flows with the water flow during the cooling process. The temperature at different positions is adjusted, so that the cooling effect is guaranteed, and suitable cooling temperatures are provided for the material at different cooling stages. Energy waste and material damage caused by excessive cooling are avoided.

The utility model provides a low-temperature high-pressure hydrogen storage pressure container, which belongs to the technical field of hydrogen storage and comprises a storage bottle body, a pressure-resistant inner container is arranged on the inner wall of the storage bottle body, a hydrogen delivery pipe is communicated with one side of the pressure-resistant inner container in a sealed manner, a heat-conducting inner container bottle is arranged on the outer wall of the pressure-resistant inner container, and a threaded groove is formed in the outer wall of the heat-conducting inner container bottle. A cooling pipe is arranged in the threaded groove, one end of the cooling pipe is in pipe connection with a heat discharge pipe, a heat insulation plate is arranged between the heat discharge pipe and the cooling pipe, the heat discharge pipe is wound on the outer wall of the heat insulation plate, a heat insulation layer is wrapped on the outer wall of the heat discharge pipe, and a main tank body is arranged on the outer wall of the heat insulation layer. External heat is isolated through the heat insulation plate, meanwhile, the cooling temperature in the cooling cavity is kept through the heat preservation layer, the cooling cavity is in a low-temperature state, the cooling temperature is kept in a stable interval, temperature fluctuation in the cooling process is avoided, and the liquidation temperature level of reduction liquid hydrogen can be conveniently adjusted after equipment is transported to a designated position and the temperature changes.

The utility model provides a heat dissipation structure of a solar controller, which belongs to the technical field of photovoltaic controllers and comprises a controller shell, a sealing cover plate, a ventilation dustproof net, a partition plate, a mounting frame, a support, a controller component, a surface-mounted temperature sensor, a sintering heat pipe, a heat dissipation sheet and a heat dissipation fan. According to the utility model, the radiating fins hung at the upper ends of the controller components can absorb heat emitted upwards by the controller components from the upper ends, and the fins of the radiating fins are trapezoidal, so that the radiating fins can fully absorb the heat from a heat source part and quickly transfer the heat to a thinner area around, thereby improving the radiating efficiency and reducing the heat loss. The inclination angle of the flow guide grooves of the cooling fins is 15 degrees, natural convection airflow can be guided to pass through a cooling area in an accelerated mode, the circulation performance of air in the controller can be improved, heat on the side faces of controller components can be rapidly conducted to the far-end cooling fins through the sintering heat pipes, the cooling temperature difference can be reduced, and the service life of the controller is prolonged. And the condition of overlarge regional cooling difference is reduced.

The present application relates to a kind of device and process for preventing weld pipe weld cracking, the anti-cracking pipe body of the device is used to enter weld pipe and carry out cooling temperature reduction;The wind cooling cavity is arranged on the wind cooling pipe body side wall of the one end of anti-cracking pipe body, cooling air is evenly shunted to each air nozzle through the wind cooling cavity, the cooling air with temperature of 80 DEG C ~ 90 DEG C and wind pressure of 0.4MPa ~ 0.6MPa is blown out by air nozzle, and the weld of weld pipe is cooled and temperature reduced, the water cooling chamber is arranged on the water cooling ring side wall of the other end of anti-cracking pipe body, cooling water is evenly shunted to each water nozzle through water cooling chamber, and the cooling water with temperature of 20 DEG C ~ 40 DEG C is sprayed out by water nozzle, and the weld of weld pipe is again cooled and temperature reduced, the device effectively improves the metal crystal organization after welding of weld, micro-crack does not appear at weld, and the problem that weld cracking does not appear when subsequent roll-pressing groove on the end of weld pipe, product quality is improved.

The invention discloses a comprehensive maintenance method and system for construction of a composite wall of a comprehensive hub station through a cover-excavation top-down method, and relates to the technical field of rail traffic engineering construction. The technical problems of low maintenance efficiency, unbalanced temperature and humidity control, easiness in cracking and leakage and the like of the laminated wall under the working condition of top-down excavation are solved; the comprehensive system comprises mold curing, intelligent temperature and humidity control, cooling temperature control, heat preservation and moisture preservation and monitoring early warning, automation, refinement and traceability of the curing process are achieved, the moisture preservation and heat preservation period of the laminated wall is prolonged, the internal and external temperature difference is strictly controlled to be smaller than or equal to 25 DEG C, the concrete surface moisture content is controlled to be larger than or equal to 80%, and the impervious concrete curing period is controlled to be larger than or equal to 14 d. According to the construction method, the integrity and the anti-cracking and anti-seepage performance of the wall body are remarkably improved, the construction requirements of the large cover-excavation top-down composite wall are met, the construction convenience and the maintenance quality reliability can be effectively improved, and remarkable economic and social benefits are achieved.

The utility model relates to a cabinet cooling and temperature control device, which belongs to the technical field of cabinet heat dissipation equipment and comprises a box body, an air conditioner, a phase change module system and a heat pipe plate, the air conditioner and the phase change module system are arranged in the box body, and the box body is provided with a cold air outlet, a natural air inlet and a mounting groove. A mounting groove is formed in the box body, the heat pipe plate is obliquely inserted into the box body through the mounting groove, one end, located in the box body, of the heat pipe plate is a cold end, one end, located outside the box body, of the heat pipe plate is a hot end, and the position of the cold end is higher than that of the hot end. When the cabinet is cooled, heat exchange with cold air in the box body is carried out, then liquidation is carried out, heat is released in the box body, the heat flows back to the hot end under the action of gravity, the heat is absorbed again and vaporized, the effects of continuously transferring the heat of the cabinet to the box body and transferring the cold energy of the box body to the cabinet are achieved, heat dissipation is faster, the cooling amplitude is larger, and more cold energy is supplied.

The invention discloses a method for accurately controlling the cooling control temperature of a 4mm-6mm thin steel plate of a pilot mill, which comprises the following steps of: 1) ensuring that the ratio of the length of the steel plate to the length of an effective cooling area is 6: (1.2-2.9), and taking 700 integral multiplying power of the effective cooling area; (2) the flow of the valve group is adjusted according to the controlled cooling temperature difference interval, and it is guaranteed that the ratio of the temperature difference value to the total water amount ranges from 3.5 to 4.5; meanwhile, the requirement that the total water amount of the upper header is 1-3 m < 3 > / h smaller than that of the lower header is met, and the straightness requirement of the steel plate is met; (3) the speed of the controlled cooling rail is calculated according to the needed cooling speed; and (4) according to the size cooling requirement of the steel plate, it is guaranteed that the spraying width of the water flow impacting the steel plate does not exceed 200 mm. The cold control temperature can be more accurately controlled by adopting front-section centralized cooling and reasonably setting parameters such as the flow of each group, the roller way speed and the spacing of each group.

The present invention relates to a method for thermolytic fragmentation of a sugar into C1-C3 oxygenates, comprising cooling the fragmentation product downstream of the reactor to a cooling temperature of from 230° C. to 390° C. and then separating solids from the fragmentation product cooled to the cooling temperature. The present invention also relates to a system for performing the thermolytic fragmentation of a sugar into C1-C3 oxygenates. The method and the system are suitable for industrial scale production.

This invention discloses a dual-circuit cooling system for converter rings and its control method, relating to the field of metallurgical equipment cooling technology. The dual-circuit cooling system includes a dual-path independent water supply network, comprising a dedicated line to the furnace mouth, a dedicated line to the furnace chamber, and a dynamic balancing valve group. The control method for the dual-circuit cooling system specifically includes the following steps: the furnace mouth loop uses ambient temperature water, with the water temperature ≤35℃, to achieve rapid cooling of the high heat load area; simultaneously, the furnace chamber loop uses a heat exchanger for pre-cooling, with the pre-cooling temperature ≤60℃, to prevent high-temperature return water from impacting the rings. This invention utilizes existing pipe supports to lay new pipelines, achieving zero additional land occupation. Furthermore, the high-temperature return water from the furnace mouth does not flow through the furnace chamber, reducing the system heat load by 40%, resulting in better thermodynamic optimization. Through dual-path independent metering and closed-loop control, the inlet flow rate of the rings is stabilized at 50±2 m³ / h, achieving precise flow rate regulation.

The invention discloses a temperature adjusting system which comprises a vortex tube refrigerating assembly, a heater, a temperature control environment box, a heat regenerator and a gas pipeline. A first flow path and a second flow path are arranged on the gas pipeline in parallel, the first flow path is directly communicated with the gas inlet end and the gas outlet end of the gas pipeline, the second flow path is arranged in the heat regenerator in a penetrating mode, and a valve set for controlling the first flow path and the second flow path to be connected and disconnected is arranged on the gas pipeline. A parallel double-flow-path structure capable of being mechanically switched is innovatively arranged in a gas pipeline, so that the system can be flexibly selected between two efficient working modes: when a first flow path is selected, gas of a gas source directly enters a temperature adjusting unit, and the system runs at the maximum cooling rate; when the second flow path is selected, the gas firstly flows through the heat regenerator, exchanges heat with low-temperature exhaust gas from the temperature control environment box to be pre-cooled, and then enters the temperature adjusting unit, so that the refrigeration temperature limit is broken through on the premise that the gas source load is not increased, and the energy efficiency is improved.

The invention discloses a method for quickly reducing the cooling temperature of a sample in a low-temperature impact test, which is characterized by comprising the following steps of: putting the sample into a low-temperature tank of an impact testing machine, adding alcohol to submerge the sample by more than 25mm, opening an air valve, slowly introducing liquid nitrogen, and keeping for a certain time after the temperature is reached, so as to ensure that the temperature is uniform. The invention aims to provide the method for quickly reducing the cooling temperature of the sample in the low-temperature impact test, and the method has the characteristics of high cooling rate, simplicity in operation, easiness in popularization and the like, and can meet the requirements of daily urgent test, completion of the test in a short time and provision of a test result.

The application discloses a production method for controlling the shape of a high-strength steel plate in winter TMCP, which comprises the following steps: step one, setting the slab discharge temperature to be 1220-1270 DEG C, and performing rough descaling once; step two, rough rolling stage; step three, finish rolling stage; step four, pre-straightening treatment is performed on the steel plate after rolling; step five, the opening cooling temperature of the steel plate with a thickness of 10-20 mm is greater than or equal to 780 DEG C; step six, the water temperature of the rapid cooling device is controlled to be 26+ / -4 DEG C, the edge is shielded, the head and tail are shielded, the frame height of the rapid cooling device for the steel plate with a thickness of 10-20 mm is set to be 500-600 mm, and the frame height is divided into four areas A, B, C and D; and step eight, a 9-roller hot straightening machine is adopted for straightening, the straightening temperature is less than or equal to 350 DEG C, the entry roll gap of the straightening machine is the thickness of the steel plate minus 2-9 mm, and the straightening speed is 0.5-1.0 m / s. The method can effectively avoid the warping, head buckling and edge wave of the high-strength steel plate caused by the non-uniform temperature after rapid cooling, and improve the production efficiency.

The utility model discloses a motor test load simulation device which comprises a supporting mechanism, a load tester and a motor body, the upper end of the supporting mechanism is provided with a heat preservation mechanism, the lower end of the supporting mechanism is provided with a temperature adjusting mechanism matched with the heat preservation mechanism, and the supporting mechanism comprises a detection table and a motor fixing frame. The motor body is fixedly installed on the motor fixing frame, an air inlet and an air outlet are formed in the position, close to the motor fixing frame, of the upper end face of the detection table, the heat preservation mechanism comprises a heat preservation cover and fixing bolts, and the heat preservation cover is arranged at the upper end of the motor body in a sleeving mode and rotationally connected with the detection table and fixed to the motor fixing frame through the fixing bolts. The temperature adjusting mechanism comprises a sealing box, an electric heating wire fan and a refrigerator. The motor test load simulation device has the advantages of rapid heating and cooling, uniform and stable temperature and convenient operation, and solves the problem that the motor test load simulation device cannot simulate an extreme temperature environment.

The invention relates to the technical field of steel and iron smelting, and particularly discloses a control method for reducing the initial cooling temperature and improving the use safety of pipeline steel X65M, plate blank heating is conducted, specifically, the heating temperature is controlled, the form and proportion of soft-phase ferrite in a steel plate microstructure are met, and the yield ratio of a steel plate does not exceed 0.85; rolling: adopting low-temperature rolling, and controlling the finish rolling temperature; in the water cooling process, the initial cooling temperature is actually controlled to be 25 DEG C lower than the Ar3 temperature for the X65M pipeline steel with the thickness specification of 20-25 mm, the cooling rate is not lower than 23 DEG C / s, the final cooling temperature is 480-500 DEG C, and the roller way speed, the operation time and the temperature drop generated in the operation process are controlled; according to the method, the cooling temperature is effectively reduced to be within the precise range, then the follow-up process is matched to improve the X65M use safety, and the safety performance of the construction pipeline in the use period can be effectively improved.

The application discloses a strip steel laminar cooling temperature field and stress field coupling calculation method, comprising the following steps: determining a phase change model considering deformation influence; establishing a strip steel three-dimensional geometric model in a laminar cooling process based on ANSYS-APDL language; performing mesh division; performing temperature field and stress field coupling solution calculation, and combining the phase change model considering deformation influence to determine whether phase change occurs, if phase change occurs, calculating current node phase change conversion rate and phase change latent heat; processing simulation calculation results to obtain a strip steel laminar cooling process temperature-time curve diagram and stress-time curve diagram, and ferrite, pearlite or bainite transformation amount. Compared with traditional laminar cooling temperature field and stress field coupling calculation, the application considers the influence of finishing deformation on phase change, and is more in line with actual conditions; compared with operation by using a finite element interface, the macro command established by using the APDL language can repeat modeling of the same type of problem by changing parameters, which is time-saving and efficient.

This invention discloses an external 3D printing cooler. The cooler includes: a cooler body disposed on the 3D printing head; a cavity within the cooler body, with multiple fins arranged parallel to each other along a first direction at the center of the cavity; a first fin among the multiple fins, the side of which abuts against a cooling device; a first radiator disposed on the top of the multiple fins, supplying air vertically along the first direction; and an air outlet disposed on the bottom of the cavity, discharging air vertically along the first direction. This invention allows for setting appropriate solidification temperatures and times for different materials based on their characteristics. By controlling the cooling device and water cooling device, the cooling temperature can be adjusted in real time according to the model conditions, ensuring rapid solidification of the printed material, preventing material collapse due to insufficient solidification, facilitating subsequent material stacking, and promoting the integrity of the 3D printed object.

The utility model discloses a heat shield device for an asphalt mixture combustion furnace, which relates to the technical field of combustion equipment and comprises a mounting base and a heat shield safety use component. A supporting frame is fixedly connected to the top of the mounting base, a sliding groove is formed in the top of the supporting frame, and a sliding block is slidably connected into the sliding groove; the heat insulation cover safe use assembly comprises a hydraulic elevator, a heat insulation cover, a heat insulation layer plate, a voice infrared sensor, a temperature sensor and a temperature displayer, the hydraulic elevator is fixedly installed at the bottom of the sliding block, and the heat insulation cover is fixedly installed at the output end of the hydraulic elevator and slidably installed at the top of the installation base; when people approach a certain range, people are prompted by voice to pay attention to scald prevention, the risk that people are scalded by high temperature is reduced, and potential safety hazards are reduced; and in the sample cooling process, people do not need to regularly check whether the cooling temperature reaches the room temperature or not, so that the process is safe, and the labor intensity of experimenters is reduced.

The present invention relates to a method for controlling a heating and / or cooling system (1) for a building, comprising a temperature control element (10) that heats or cools a temperature control medium, optionally a circulation pump (16), several heat exchangers (5, 5', 5'', 5'') connected to the temperature control element (10) and optionally to the circulation pump (16), wherein each heat exchanger (5, 5', 5'', 5'') is assigned to a room of the building and each heat exchanger (5, 5', 5'', 5'') has a valve (6, 6', 6'', 6'') that regulates the flow of the temperature control medium through the heat exchanger (5, 5', 5'', 5'') with a valve (6, 6', 6'', 6'''') associated actuator for varying the opening degree of the corresponding valve (6, 6', 6'', 6''''), a flow pipe, a flow temperature sensor (3) arranged in the flow pipe, a consumer, a return pipe and a heating circuit temperature sensor (7, 7', 7'', 7'''') arranged in the return pipe, and at least one control unit (11),the power supply of the actuators of the valves (6, 6', 6'', 6'') is controlled, wherein in the heating and / or cooling system (1) the temperature control medium is heated or cooled in the temperature control element (10), is led via a supply line (2) to a supply heating circuit distributor (4), is distributed by the supply heating circuit distributor (4) to the heat exchangers (5, 5', 5'', 5''), flows through the heating circuits (5, 5', 5'', 5'') and is led via a return heating circuit distributor (8) into a return line (9) and via the return line (9) to the temperature control element (10), wherein several setpoint values ​​for the temperature difference of the temperature control medium in the supply and in the return are set in the respective actuator Return flow of the respective heat exchanger (5, 5', 5'', 5'') are stored,wherein a change in the setpoint for the respective actuator is effected by a clocked sequence of switching the power supply to the corresponding actuator on and off by the control unit (11). Furthermore, the present invention relates to a heating system (1) for a building, the control unit (11) of which is configured to provide the operations for carrying out a method according to the invention, and to a computer program product, the execution of which in the control unit (11) is configured to provide the operations for carrying out a method according to the invention.