560 results about "Surface heat" patented technology

The invention relates to the technical field of tunnel engineering safety, in particular to a tunnel fire multi-stage damage collaborative prediction method and system, and the method comprises the steps: constructing a data simulation fusion model, and carrying out the processing of fire and tunnel structure parameter data, and obtaining a multi-working-condition parameter database; constructing a heat conduction equation, a fire plume and wall surface heat exchange relational expression, a boundary layer correction model and a comprehensive damage evaluation model, and analyzing the equation, the relational expression and the model by utilizing a multi-physical field coupling unified boundary condition to obtain a multi-physical boundary constraint condition; obtaining a multi-physical constraint loss function based on a network architecture and a multi-physical boundary constraint condition, and further obtaining a comprehensive constraint loss function of a temperature field-stress field-damage index; constructing a PINN-LSTM network architecture and a damage evolution analysis model based on the fire ending initial state coding vector, the fire course feature vector and the cooling process feature vector; and performing linkage analysis on the function, the frame and the model to predict and monitor the transient damage and the long-term creep damage of the tunnel.

The invention relates to the technical field of industrial vision, in particular to a ceramic glazed tile internal defect detection method based on image recognition, which comprises the following steps: acquiring multi-modal data including an X-ray tomography sequence, a surface heat map, a visible light image and production process parameters; constructing a three-dimensional digital twin based on X-ray data, fusing surface image information, and utilizing a three-dimensional segmentation network to accurately identify three-dimensional geometric features of internal and underglaze defects; carrying out physical causal reasoning on the geometrical characteristics of the defects through the constructed defect-cause knowledge graph reasoning model, and intelligently matching and identifying the physical causes of the defects; targeted correlation analysis and traceability are performed in combination with physical causes and production process parameters, production links causing defects are accurately positioned, and a control instruction for optimizing production is generated. According to the method, closed-loop defect detection of'diagnosis-traceability-control 'is realized, the defect problem can be accurately positioned, and automatic decision support is provided for optimizing production and improving product quality.

The invention provides a three-period minimal curved surface change heat exchanger for airborne intermittent high-heat-flux surface heat dissipation, and belongs to the technical field of phase change heat storage. According to the technical key points, the flow channels are divided into hot fluid flow channels allowing hot fluid to pass through and preventing cold fluid from flowing and cold fluid flow channels allowing cold fluid to pass through and preventing hot fluid from flowing, and the hot fluid flow channels and the cold fluid flow channels intersect in direction and are alternately arranged to form effective heat exchange channels. A phase change material is packaged in a hot fluid flow channel by adopting a three-period extremely-small curved surface structure, and the structure is used as a primary heat exchange surface, so that rapid heat exchange between the phase change material and hot fluid is promoted, and the heat storage rate is increased; cooperative disturbance structures matched with the three-period extremely-small curved surfaces are arranged in the cold fluid flow channels, heat exchange between the phase-change materials and the cold fluid is further promoted, and the heat dissipation rate is increased. The device has the advantages of being compact in structure and high in heat storage / release rate, and the requirements of high-power equipment in the instantaneous heat storage and dissipation process are effectively met.

The invention discloses a manufacturing method of an encapsulation type driver transformer with high heat dissipation efficiency, and belongs to the technical field of power electronic equipment manufacturing. The invention aims to solve the technical problems of low heat dissipation efficiency and insufficient long-term reliability caused by limited heat-conducting property of a potting material, simple surface heat dissipation structure and difficulty in coordination of internal thermal stress of the existing driver transformer. The method comprises the following steps: constructing a three-dimensional digital model of a reinforced heat dissipation structure with a boss array and a groove array, and preparing a corresponding forming mold; a magnetic core and a winding are used as inserts to be positioned in a mold cavity, insulating colloids with different mechanical and heat conduction characteristics are poured in a vacuum environment in batches, internal gaps are fully filled with flexible colloids and stress is buffered through a segmented curing process, meanwhile, high-heat-conduction rigid colloids form an external main body and a heat dissipation structure, and an integrated potting body is formed. The method is used for manufacturing the driver transformer suitable for scenes with high power density and high heat dissipation requirements, and the heat dissipation capability and the operation reliability of the driver transformer can be remarkably improved.

The invention relates to the technical field of metal surface heat treatment, and discloses a fixed inductor for high-speed rail axle surface induction quenching, which comprises a busbar, a fixed plate, a cooling water sprayer and an effective geometry heating ring, the busbar is used for fixing the effective geometry heating ring and forms an electrifying passage and a water passing passage with the effective geometry heating ring with the hollow structure; the effective geometric body heating ring comprises three sections of straight section induction pipe bodies with different lengths and two sections of arc induction annular bodies, the straight section induction pipe bodies are arranged according to the lengths D1, D2 and D3, the straight pipe section D1 and the straight pipe section D2 are in arc transition through an R1, the straight pipe section D2 and the straight pipe section D3 are in arc transition through an R2, and the three straight pipe sections are parallel to one another and progressive inwards layer by layer; and the radians of the two sections of arc induction annular bodies are 90 degrees. According to the invention, one-time and global synchronous induction heating can be carried out on multiple sections of shaft necks and transition R-angle areas with complex geometrical shapes and obvious stress concentration at the two ends of the axle.

The invention provides an air-cooled array surface structure adopting a vapor chamber frame, which comprises a vapor chamber array surface frame, an antenna cover, a receiving and transmitting assembly, an antenna, a shell, a connector, a temperature monitoring unit, an array surface distribution plate, a high-power-consumption functional module, a low-power-consumption functional module, a temperature control module, a large-air-volume axial flow fan, an internal turbulent flow fan and a semiconductor refrigerator, a semiconductor refrigerator cold end, a semiconductor refrigerator hot end, a loop heat pipe, a loop heat pipe cold end, a loop heat pipe hot end, an air duct cover plate, a rear cover plate, a rear cover plate external groove, a rear cover plate internal groove, a sealing rope, a fan protective cover, captive screws and trunnions are included. According to the design of the invention, the array surface heat dissipation mode is changed from liquid cooling to air cooling, the design requirements of light weight and low cost of the array surface structure are realized, and the effect of the heat dissipation system and the redundancy design is verified step by step in the high-temperature environment test process to meet the requirements.

The invention belongs to the technical field of electric heating deicing, and particularly relates to a surface heating electric heating film and a preparation method thereof. Comprising an outer surface insulating layer, a heating layer, a power supply electrode and an inner surface insulating layer, the heating layer is prepared from a carbon-based conductor composite polymeric material in a printing or coating mode, and the carbon-based conductor composite polymeric material is formed by mixing polyimide resin and carbon fibers (or one or more of graphene, carbon nanotubes and the like). The surface heating electric heating film provided by the invention has the characteristics of simple and reliable structure, light weight and surface heating performance, can be applied to ice prevention and removal operation of parts such as aircraft wings, empennages, propellers and the like, and has relatively high practical application value.

The invention relates to a to-be-cut solar cell and a photovoltaic module, and the cell comprises a cell body, and the surface of the cell body is provided with a laser heating enhancement region; the laser heating enhancement area is provided with a light trapping part and a heat absorption part, and a to-be-cut line of the battery piece body is located in the laser heating enhancement area; the light trapping part is arranged on the surface of the laser heating enhancement area; the heat absorption part and the light trapping part are at least partially overlapped, and the heat absorption part is arranged on the to-be-cut line. The light trapping part can improve the light incidence effect and increase the utilization rate of laser energy, the heat absorption part can absorb laser and heat around the light trapping part so as to improve the temperature of laser cutting at the position of the to-be-cut line, and therefore under the condition that low laser output power is adopted, the laser cutting efficiency is improved. The heat on the solar cell is not reduced, the effect of cutting the solar cell can still be realized, the damage to the surface of the solar cell is reduced, the power loss of the solar cell is reduced, and the power generation efficiency and long-term reliability of the photovoltaic module are improved.

The utility model discloses an anti-immersion American transformer station comprising a box station, the two ends of the front side of the box station are rotatably connected with station doors, the outer side of the box station is fixedly provided with a waterproof plate, the upper part of one side of the box station is fixedly provided with a motor protection cover, the front side of the box station is fixedly provided with a rubber frame, and the surface of the rubber frame is provided with a clamping groove. Magnet pieces are evenly arranged on the surface of a clamping groove in the surface of the rubber frame in an adhesive mode, a rubber clamping ring is fixed to the surface of the station door, and a metal piece is arranged in the rubber clamping ring. According to the anti-immersion American transformer substation, the anti-seepage effect of the American transformer substation can be improved through clamping and sealing of the L-shaped waterproof plates at the heat dissipation holes in the surface of the box station, the rubber frame in the box station and the rubber clamping ring on the surface of the station door.

The invention discloses a lithium battery module structure with an internal thermal management channel, and belongs to the technical field of battery management.The lithium battery module structure with the internal thermal management channel comprises an outer shell and a lithium battery pack, and a top cover is installed at the top of the outer shell; two sets of wire inlet and outlet holes are symmetrically formed in the middle positions of the two ends of the outer shell, a protection mechanism is arranged in the outer shell, and a first channel mechanism used for allowing cooling liquid to flow is arranged in the inner wall of the protection mechanism. The heat dissipation grooves are formed in the two sides of the protection bin, a plurality of channels are divided through the n-shaped heat conduction strips, one end of each internal heat conduction rod extends to the liquid outlet channel, waste heat of cooling liquid and heat conducted to the bin wall by a battery can be guided out, heat dissipation of the surfaces of the heat conduction rods is accelerated through the fans in the heat dissipation grooves, and the design constructs a liquid cooling and air cooling synergistic heat dissipation mode; the overall heat dissipation effect is further enhanced, and the heat management capacity of the module under different working conditions is guaranteed.

The invention relates to the technical field of electronic component heat dissipation, and discloses a micro-fluidic regulation liquid drop overheating surface heat dissipation device based on intelligent monitoring, which comprises an electrode plate body, an electrowetting surface is arranged above the electrode plate body, a plurality of liquid drops are arranged on the electrowetting surface, and the electrode plate body is connected with an external control circuit module. The liquid drops and the electrode plate body form a conductive path; the control system comprises a control module and a temperature acquisition module, the temperature acquisition module is used for acquiring the environmental space temperature, the control module is connected with the external control circuit module, and when the acquired temperature exceeds a set temperature threshold value, the control module controls the electrode plate body to form an electric field gradient through the external control circuit module, so that the liquid drops move towards an overheated point, and the liquid drops are heated. And the liquid drops absorb heat through evaporation. The liquid drop migration speed is remarkably increased, the system adopts a phase change heat transfer mechanism, evaporation or boiling replaces sensible heat transfer, and the unit area heat dissipation efficiency is remarkably improved compared with a traditional scheme.

The invention discloses a humanoid robot bionic skin heating temperature control method, and belongs to the technical field of robot automatic control, and the method comprises the following steps: obtaining real-time temperature distribution data of a bionic skin surface, carrying out time domain differential processing to generate temperature change rate data, and combining the obtained real-time pressure distribution data to construct a contact surface heat conduction characteristic; and generating a basic heat energy supply strategy based on the steady-state components in the heat conduction characteristics of the contact surface, performing dynamic weighted fusion on the basic heat energy supply strategy and an instantaneous heat flow disturbance compensation amount calculated based on the instantaneous dynamic components in the heat conduction characteristics of the contact surface, generating a control heating instruction, and driving a heating unit in the bionic skin to execute a heating action. The real-time pressure and the temperature change rate are integrated to construct the heat conduction characteristic of the contact surface, and the characteristic is decomposed into a steady-state component and an instantaneous dynamic component for feed-forward compensation control, so that predictive compensation can be performed on external thermal disturbance, and rapid and stable control on the temperature of the bionic skin is realized.

The invention relates to the technical field of space satellite thermal control, in particular to a space satellite thermal control system based on self-adaptive thermal transport, which comprises a thermochromic intelligent thermal control coating coated on the whole outer surface of a space satellite, the variable-direction active heat compensation pump loop is arranged in the space satellite; the variable-direction active heat compensation pump loop is arranged between the satellite main illuminated face and the satellite main nightside and used for conducting heat transfer between the satellite main illuminated face and the satellite main nightside. The structure is simple, a basic frame of a heat control system is built, through cooperation of coating covering and a heat pump loop, regulation and transfer of satellite surface heat are preliminarily achieved, the temperature difference of the satellite outer surface is effectively reduced, the temperature uniformity of the outer surface is improved, effective guarantee is provided for a space satellite to avoid detection of an infrared detector, and the application range is wide. And the space satellite is safer and more hidden.

The invention discloses an active infrared thermal imaging thermal diffusion parameter inversion method and system based on a physical information neural network, and belongs to the technical field of infrared thermal imaging nondestructive testing and thermophysical parameter identification. In order to solve the problems that an active infrared thermal imaging method is difficult to steadily invert spatial distribution thermal diffusion parameters under the condition of only single-side surface temperature measurement and is sensitive to measurement noise, the method comprises the following steps: collecting surface space-time temperature field data of a tested piece under thermal excitation, and calculating a relative temperature field; normalizing the space-time coordinates, and constructing a multi-output physical information neural network; the equivalent surface heat conduction equation and the boundary and initial conditions thereof serve as a loss function of a physical constraint embedded neural network, and a Huber loss function is adopted to calculate a data fitting item; a neural network is optimized through joint training, a global volume thermal diffusion coefficient, a global equivalent thermal loss coefficient, a relative thermal diffusion coefficient field and a relative thermal loss coefficient field of spatial distribution are synchronously inverted, and a high signal-to-noise ratio temperature field is reconstructed. The method is used for material surface nondestructive testing.

The present application relates to the technical field of heat dissipation of apparatuses. Disclosed are a heat dissipation device and a communication apparatus. The heat dissipation device comprises a first liquid cooling plate, a second liquid cooling plate, a first liquid dispenser and a second liquid dispenser. The first liquid cooling plate is configured to be attached to a chip, and comprises a first inner channel through which a cooling working medium flows to take away surface heat, and a first liquid inlet and a first liquid outlet, which are in communication with the first inner channel. The second liquid cooling plate is configured to be attached to an optical module, and comprises a second inner channel through which the cooling working medium flows to take away the surface heat, and a second liquid inlet and a second liquid outlet, which are in communication with the second inner channel. One end of the first liquid dispenser is in communication with the first liquid inlet and the second liquid inlet, and the first liquid dispenser is configured to supply the cooling working medium to the first inner channel and the second inner channel. The heat dissipation device and the communication apparatus provided in the embodiments of the present application can improve the heat dissipation capability for a heating component.

The invention relates to the technical field of building material recycling, in particular to a method for stripping a composite flexible surface layer of a metal coiled material, which comprises the following steps of: 1, adjusting the frequency of an electromagnetic heating device to be proper, enabling a product to be recycled to pass through the electromagnetic heating device, and heating the surface layer of the metal coiled material by the electromagnetic heating device under the frequency; and 2, after the to-be-recycled product passes through the electromagnetic heating device, the flexible surface layer is heated to be close to a softening point under the heat conduction of the surface layer of the metal coiled material, and at the moment, the flexible surface layer is stripped from the metal coiled material. A to-be-recycled product passes through an electromagnetic heating device, the proper frequency is adjusted, the surface, attached to the flexible surface layer, of the metal coiled material is accurately heated, the adjacent flexible surface layer (or hot melt adhesive) is heated to be near a softening point through heat conduction of the rapidly-heated surface of the metal coiled material, and the purpose of stripping the metal coiled material from the non-metal flexible surface layer is achieved. The stripping method is low in cost and high in efficiency.

The application discloses a metal surface heat treatment device with a self-diagnosis function and a treatment method, relates to the technical field of metal heat treatment devices, and comprises a main base, the upper surface of the main base is provided with a cooling soaking pool, and the upper surface of the main base is further provided with an auxiliary mechanism; the auxiliary mechanism comprises a material conveying component and a gas collecting assembly; the material conveying component comprises a conveying frame body arranged on the upper surface of the cooling soaking pool and provided with a feeding conveyor belt on the upper surface; the gas collecting assembly is composed of a detection component and a processing component; the gas collecting assembly comprises a side base connected with one side surface of the main base, and the upper surface of the side base is provided with a treatment box body; and the processing component comprises a regenerative catalytic oxidizer and a receiving pool. In the scheme, the gas collecting assembly can intelligently collect organic mist generated during metal quenching, and the organic mist is treated through condensation or catalytic decomposition; in addition, the treatment product can be reused to improve the performance of the cooling liquid.

The utility model relates to the technical field of glass instrument safe cleaning, and discloses a chemical laboratory glass instrument safe cleaning and drying rack which comprises a drying box, clamping grooves are formed in the left side and the right side of the interior of the drying box, and connecting blocks are slidably connected to the upper end and the lower end of the interior of the drying box. Two pressing blocks are slidably connected to the front end of the interior of the connecting block, sliding blocks are slidably connected to the left side and the right side of the interior of the connecting block, connecting rods are rotatably connected to one sides of the exteriors of the sliding blocks, and pushing blocks are fixedly connected to the two sides of the exteriors of the sliding blocks. The beaker placing rack can adapt to glass instruments of different sizes, and for small beakers, the distance between the placing racks can be properly adjusted to be small, so that excessive concentration of heat is avoided, and overheating is prevented; and for a large beaker, the spacing can be increased to ensure that the beaker can be in full contact with heat flow, so that the surface is uniformly heated, the drying time is obviously shortened, and the drying efficiency is improved.

The invention discloses a lithium battery heat production power determination method and device and a readable storage medium, and the method comprises the steps: obtaining the charge state of a target lithium battery at the current moment, matching the charge state of the target lithium battery with target corresponding relation information, and obtaining the real heat production power of the target lithium battery at the current moment; the target corresponding relation information is obtained according to the surface heat production power and the heat dissipation power of the target lithium battery in the stage of simultaneous heat production and heat dissipation of the target lithium battery, and the heat production power in the target corresponding relation information is obtained by distinguishing heat production of the battery and environment heat dissipation; therefore, the real heat production power of the target lithium battery can be accurately reflected by obtaining the heat production power based on target corresponding relation information matching, and the method has the advantages of distinguishing the real heat production characteristics and improving the heat production power determination accuracy.

The utility model relates to cold machine cabinet technical field, concretely is a multipurpose liquid cooling machine cabinet, including the cabinet, the cabinet one side outer wall rotationally connected has the apron, the cabinet inner wall is provided with the equipment frame, the equipment frame is provided with the hollow, the equipment frame bottom outer wall is provided with a plurality of air flow channels, the cabinet bottom fixedly connected with the liquid collecting tank, the utility model discloses through the liquid pump drive cooling liquid in the liquid collecting tank, is transported to the equipment frame through the second liquid hose, utilizes the heat conductivity of equipment frame and absorbs the equipment heat in the machine cabinet, again through the first liquid hose and flows back to the liquid collecting tank, realizes closed cycle cooling. At the same time, the air pump of rotating air inlet mechanism injects air into the bottom tank through the air inlet pipe, enters the gas distribution pipe through the guide hole of rotating shaft, and then sprays upward through the air outlet pipe of the air guide plate, forming the airflow from bottom to top, which carries away the heat on the surface of the equipment through the airflow channel at the bottom of the equipment frame, and forms a "three-dimensional" heat dissipation network with the liquid cooling system.

The invention relates to the technical field of high-temperature-resistant coatings, in particular to a method for repairing a high-temperature-resistant environmental barrier coating, which comprises the following steps of: pretreating a to-be-repaired area on the surface of a ceramic matrix composite material; the surface to-be-repaired area is coated with prepared bonding layer slurry, curing treatment is carried out, and a first bonding layer is obtained; coating the outer surface of the first bonding layer with the bonding layer slurry, and performing curing treatment to obtain a second bonding layer; the outer surface of the second bonding layer is coated with prepared middle layer slurry, curing treatment is conducted, and a middle layer is obtained; coating the outer surface of the middle layer with prepared surface layer slurry, and performing curing treatment to obtain a surface layer; and carrying out surface heat treatment on the ceramic-based composite material coated with the surface layer to obtain the high-temperature-resistant environmental barrier repair coating. The repairing method of the high-temperature-resistant environmental barrier coating aims at solving the problem that the external field repairing difficulty of the local damaged area of the environmental barrier coating on the surface of the ceramic matrix composite is large.

The utility model provides a battery pack cover plate, a battery box body, a battery pack and an electric device. The battery pack cover plate comprises a body, and an anti-corrosion coating and a heat insulation coating which are sequentially arranged on the body. According to the battery pack cover plate, the body of the battery pack cover plate is provided with the anti-corrosion coating and the heat insulation coating, the anti-corrosion coating and the heat insulation coating are firmly bonded on the body by utilizing self cohesiveness, and the risk that an upper cover of the battery pack is broken down due to thermal runaway is resisted by utilizing the heat insulation function of the coatings. At present, a power battery is usually loaded on a chassis of an electric automobile and located below a seat, the surface heat conductivity coefficient of a battery pack cover plate is reduced by arranging a heat insulation coating, and heat transfer between the battery and the environment is further restrained through the heat insulation function of the heat insulation coating. For example, the influence of the battery heat on the environment temperature in the automobile and the influence of the environment temperature in the cold environment on the battery are reduced, and particularly the endurance mileage of the electric automobile in the cold environment is prolonged.

The invention belongs to the technical field of antenna array surface testing, and discloses a general testing device for a large-aperture antenna array surface, which is formed by splicing a plurality of general testing modules, and is characterized in that each general testing module comprises a frame body, and the frame body is provided with an array surface mounting assembly, an array surface heat dissipation assembly and a module locking assembly; the array surface mounting assembly comprises guide rails and a lifting device, the guide rails comprise a plurality of vertical guide rails and horizontal guide rails, the horizontal guide rails are arranged on the vertical guide rails in a lifting manner through the lifting device, the horizontal guide rails are provided with adjusting modules used for mounting antenna array surfaces, and the array surface heat dissipation assembly provides heat dissipation air for the antenna array surfaces. The module locking assembly is installed on the side face of the bottom of the frame body and comprises an adjusting pull rod and a ground rail locking device, the adjusting pull rod locks the adjacent universal test modules, and the ground rail locking device fixes the frame body and the ground rail. The universal test device can meet the test of antenna array surfaces with different specifications and sizes, especially large-aperture antenna array surfaces.

The invention solves the problem that local temperature gradient difference of a rectifier module is easily caused by heat dissipation of a rectifier cabinet, and relates to the field of heat dissipation of rectifier cabinets, in particular to a heat dissipation auxiliary mechanism of a rectifier cabinet, which comprises a capacitor module group mounted on the rear wall of a rectifier cabinet body and the rectifier module arranged on the bottom wall of the rectifier cabinet body, a heat dissipation aluminum plate serving as a bottom plate of the rectifier cabinet body is installed at the bottom of the rectifier module, a wind power assembly is installed on the rear side of the bottom of the rectifier cabinet body, and a heat dissipation assembly used for enabling airflow generated by operation of the wind power assembly to flow in a multi-strand diffusion mode is installed at the bottom of the heat dissipation aluminum plate. The heat dissipation assembly comprises a top panel which is installed on the heat dissipation aluminum plate and detachably connected with the rectification module, a plurality of wave-shaped fins are installed at the bottom of the top panel, and a plurality of rotating blade wheels which are arranged front and back are arranged between every two adjacent wave-shaped fins. Air flow can be effectively accelerated to take away heat on the surface of the heat dissipation aluminum plate, and therefore the heat dissipation efficiency and effect are remarkably improved.

The invention relates to the technical field of thermal control coatings, in particular to a liquid metal commercial aerospace thermal control coating adaptive to extreme temperature difference, which comprises a substrate binding layer and a thermal control functional layer, the thermal control functional layer is arranged on the side wall of the substrate binding layer, a thermal circulation pipe is arranged in the thermal control functional layer, and a composite heat conduction layer is arranged on the side wall of the thermal control functional layer. A limiting stabilizing layer is arranged on the side wall of the composite heat-conducting layer. By arranging the multi-layer composite structure and the liquid metal, efficient heat regulation and control in an extreme temperature difference environment are achieved, the substrate combination layer is made of a radiation-resistant material, it is ensured that the structure stability is kept in a strong radiation environment, the liquid metal material in the heat control function layer and a cross circulation plate form a three-dimensional heat conduction network through a disc-shaped heat control circulation pipe, and the heat conduction efficiency is improved. And by arranging the separation cavity, atomic oxygen erosion is effectively blocked, and the inorganic thermal control coating layer of the separation cavity can adjust the surface thermal radiation characteristic.

The present application provides a kind of thin-walled deep hole outer thread screw rod processing clamp device and processing method, the clamp device includes clamp assembly, clamp assembly includes first clamping end cap and second clamping end cap, first clamping end cap and second clamping end cap are connected with the both ends of screw rod sample respectively, first clamping end cap includes the cooling pipeline passing through in screw rod sample inside, cooling pipeline is opened with multiple face-to-face screw rod sample inner wall's jet. The clamp device can process the screw rod sample of large stroke thin-walled deep hole, and clamp assembly can be installed on the support table assembly in prior art, can improve adaptability and universality, reduce the production difficulty of screw rod sample, the inner wall of screw rod sample can be temperature controlled by cooling pipeline to ensure cooling efficiency offset the influence of thin-walled outer surface heat production, accurately inhibit thin-walled thermal deformation, to avoid screw rod sample to produce thermal deformation, ensure the consistency of the diameter of shaped product, improve product quality, reduce processing difficulty.

This application belongs to the field of injection molding technology, specifically relating to a waste heat recovery system for injection molding processes. The system includes: a material supply subsystem, an injection molding subsystem, a cooling subsystem, and a waste heat recovery subsystem. The waste heat recovery subsystem includes: an air compressor and a surface heat exchanger; the surface heat exchanger is connected to both the injection molding subsystem and the cooling subsystem via water pipes; the air compressor is connected to the material supply subsystem via an air pipe; the surface heat exchanger absorbs both low-grade and high-grade waste heat generated by the injection molding subsystem, using the absorbed waste heat to heat the compressed air generated by the air compressor, and then supplies the heated compressed air to the material supply subsystem via the air pipe; the material supply subsystem provides plastic raw materials to the injection molding subsystem, which then performs injection molding on the plastic raw materials; this system can be used in the Industrial Internet, realizing the tiered recovery and reuse of waste heat from the injection molding process, reducing energy and water consumption in the cooling subsystem.

The invention discloses a cement-based material for subtropical region transformer substation building surface heat management and application thereof, and belongs to the technical field of concrete.The cement-based material comprises a bonding layer, a functional layer and a protective layer which are sequentially stacked on a concrete base body; the functional layer comprises the following raw materials in percentage by mass: 38% of white cement, 25% of ZnO and SiO2, 20% of phase change microcapsules, 8% of ATO nanowires and 9% of a functional additive. The cement-based material provided by the invention is used for the building surface of the subtropical substation, and the functional layer is efficient in heat management, reduces energy consumption and improves comfort; the bonding layer enhances the structural stability; and the protective layer is weather-resistant, corrosion-resistant and self-cleaning. The construction technology is simple and reliable, performance is ensured through series operation, and the service life of a transformer substation building can be effectively prolonged.

The invention relates to the field of feeding devices, in particular to an automatic feeding device of surface heat treatment equipment. The feeding device comprises a movable base and a feeding frame. The movable base comprises a feeding table; a movable feeding structure is arranged on the feeding table; the feeding frame comprises a feeding seat; a lower rotating table and an upper rotating table are sequentially arranged above the feeding seat; a circle of feeding columns and a circle of series connection columns are arranged between the lower rotating table and the upper rotating table; a plurality of groups of discharging pieces are arranged on the series connection column in the vertical direction; a plurality of groups of feeding pieces are arranged on the feeding column in the vertical direction; the feeding pieces are matched with the discharging pieces connected to the series connection columns in series in a one-to-one correspondence mode. Through macroscopic cooperation of the movable base and the feeding frame and microcosmic linkage of core components in the feeding frame, a planetary feeding structure is formed, an efficient, accurate, flexible and reliable automatic feeding system is constructed, and the technical problems of low feeding efficiency, poor uniformity, tedious operation and the like are effectively solved.

The invention relates to the technical field of metal material hot working technologies, in particular to a casting blank temperature field and structure evolution regulation and control method which comprises the steps that firstly, a three-dimensional finite element model is established based on the casting blank size and material parameters, temperature field simulation is conducted by setting different surface comprehensive heat exchange coefficients, and section temperature difference and heat transfer efficiency data are obtained; determining an optimized heat exchange condition; secondly, selecting a key temperature point based on temperature field characteristics disclosed by simulation to carry out a heat treatment experiment, establishing a quantitative relation among the heating temperature, the heat preservation time and the grain size, and determining a critical temperature and a critical heat preservation time for remarkable coarsening of the grains; and finally, in the actual heating process, the surface heat exchange boundary is controlled according to the optimized heat exchange conditions, and a heating curve and heat preservation time are set according to the quantitative relation and the critical parameters, so that the casting blank with the uniform section temperature and controlled grain coarsening is obtained. According to the method, precise cooperative regulation and control in the large casting blank heating process are achieved.