571 results about "Forced convection" patented technology

The invention provides a strengthening and toughening control method for a high-strength titanium alloy welded joint, and relates to the technical field of metal material welding, the strengthening and toughening control method comprises the following steps: S1, during welding, multi-layer and multi-channel gradient heat input is adopted, the heat input quantity of front-channel welding is Q1, the heat input quantity of rear-channel welding is Q2, and Q1 is greater than Q2; s2, after welding, cooling a welding area by stages, adopting inert gas forced convection cooling in a primary cooling stage, adopting water mist pulse cooling when the welding area is cooled to a medium temperature stage, and adopting natural air cooling when the welding area is cooled to a low temperature stage; through the synergistic effect of multi-layer multi-channel gradient heat input and staged cooling, the microstructure and performance of the high-strength titanium alloy welded joint can be effectively regulated and controlled, the structure gradient regulation and control of the titanium alloy welded joint are achieved, the tensile strength, the ductility, the fracture toughness and the creep property of the welded joint are improved, meanwhile, the process can be simplified, and deformation is reduced.

The invention relates to the technical field of metal material heat treatment, in particular to a gradient temperature control method for a stainless steel cold rolling annealing process. Comprising the steps that an annealing furnace is divided into independent temperature control sections in the strip steel conveying direction, each temperature section is provided with an electric heating wire set, a forced convection cooling air duct and a high-precision infrared temperature measurement array, temperature data are collected in real time, and a target gradient temperature curve is generated; constructing a phase change power-temperature correlation model, and outputting a theoretical gradient temperature curve; a three-stage MPC is adopted to cooperatively control and output a control signal; and the heating power and the cooling strength are adjusted in real time according to the control signal, if the temperature fluctuation exceeds the limit, the power is compensated through a PID algorithm, the strip steel speed is adjusted, and closed-loop feedback is formed. Through multi-section independent temperature control, thickness-temperature dynamic modeling and a three-level cooperative control framework, accurate tracking of a gradient temperature curve is achieved, and the quality and efficiency of the annealing process are improved.

The invention relates to an environmental test box for realizing high and low temperature rapid alternating circulation, which is mainly applied to the technical field of environmental test equipment. The test box is provided with a high-temperature chamber and a low-temperature chamber which are independent from each other, a thermal insulation layer is arranged between the two chambers, and the test box can respectively keep constant temperature environments at the highest temperature of + 75 DEG C and the lowest temperature of-50 DEG C; during a test, a sample is placed in the test bed, and the rotating shaft structure driven by the motor periodically rotates in a reciprocating manner or rotates in the same direction among different temperature zones, so that high-low temperature rapid alternating circulation is realized. The operation mode of the motor is controlled through the control system so as to simulate the accelerated aging process of the component in the temperature rapid alternating environment. According to the test box, through the design of the control system, the forced convection fan and the middle thermal insulation layer, it is guaranteed that the temperature switching process is rapid, uniform and stable. Compared with the prior art, high and low temperature circulation can be completed without overall heating and cooling of the interior of the test box, and the test box has the advantages of being high in test efficiency, capable of remarkably improving the reliability and accuracy of the high and low temperature alternating circulation test of the sample and the like.

The invention discloses a device and a method for simulating heat exchange and friction resistance measurement of an aviation high-speed motor under different working conditions, and relates to the field of heat management of high-speed rotating equipment. An additional heating sheet is attached to the outer surface of the inner rotor, and different surface structures are detachably assembled on the outer rotor to form a stator and rotor slit flow channel boundary; cooling liquid forms one-inlet and one-outlet forced convection through the radial through hole of the end cover. The rotating speed larger than or equal to 20,000 rpm, runner pressure drop and temperature data are synchronously collected through an axle load type sensor, and the heat exchange coefficient, the flow resistance coefficient and the friction resistance coefficient are calculated in real time based on energy conservation, a Darcy formula and a torque empirical formula. A real rotor surface structure is reproduced under the condition of high-speed rotation, working medium leakage is restrained through mechanical sealing, and runner blockage caused by centrifugal deformation of the surface structure is prevented through the outer rotor designed in an integrally-formed mode; the obtained convective heat transfer-resistance coefficient-friction resistance coefficient all-parameter curved surface database can guide optimization of the cooling flow channel of the aviation motor.

The invention discloses a solid waste water content prediction system and method based on an infrared thermal imager. The temperature field of the solid waste on the conveyor belt in the natural convection and forced convection moisture evaporation process is monitored and compared in real time through the thermal infrared imager, and the moisture content of the solid waste can be accurately predicted in combination with data processing, environmental parameter correction and prediction of a regression equation. Compared with a traditional sampling detection method, the method has the advantages of being high in real-time performance, non-contact, simple in equipment, good in economical efficiency and the like, can adapt to a complex industrial field environment, and provides a new technical means for intelligent and refined control over waste incineration. The system is simple in structure, high in reliability, good in detection precision and capable of achieving real-time prediction of the water content of the solid waste entering the furnace.

The invention discloses a focusing type acoustic streaming heat dissipation device facing a chip. The device belongs to the crossing field of ultrasonic technology and heat dissipation technology and is composed of a piezoelectric stack, an acoustic lens, a splitter plate, a base, a supporting rod, a copper electrode and the like. According to the device, geometric parameter configuration of the splitter plate, the piezoelectric stack and the acoustic lens is optimized, and a double-piezoelectric-plate stacked structure is adopted to enhance the ultrasonic resonance effect; high-frequency alternating voltage is applied to the copper electrodes at the two ends of the piezoelectric stack, high-frequency sound waves are excited through the inverse piezoelectric effect, and after the sound waves are focused through the sound lens, a gradient sound pressure field is formed in a cavity formed by the splitter plate and the piezoelectric stack; air molecules are driven to move directionally based on the acoustic streaming effect, so that air flow at an air inlet is accelerated by sound pressure to form high-flow-rate focusing jet flow at an air outlet, and targeted forced convection heat dissipation of a chip heat source is realized. According to the device, the ultrasonic technology and the heat dissipation technology are combined, the whole device is simple in structure, free of moving parts and low in noise, and various heat dissipation requirements can be met in an array mode.

The invention discloses a steel heat treatment quenching and tempering device which realizes full-process automatic connection of special-shaped steel parts from furnace charging, heating, quenching to tempering through rail type butt joint of a heating furnace and a quenching bath, accurate lifting of a hydraulic driving material frame and intelligent switching of a driving unit. The procedures are seamlessly switched, so that the process period is remarkably shortened, manual intervention is reduced, and the operation risk is reduced while the production efficiency is improved; in the heating and quenching process, the charging tray drives the special-shaped part to continuously rotate, electric heating bars evenly distributed in the heating furnace are matched with forced convection stirring in the quenching pool, it is guaranteed that the temperature of all parts of the special-shaped part is evenly distributed, and the risk of thermal stress deformation is effectively reduced; the structure uniformity, the hardness consistency and the comprehensive mechanical property of the quenched and tempered special-shaped part are remarkably improved through a dynamic treatment mechanism; high-temperature waste gas drives the wind wheel to rotate through the gas guide assembly, temperature homogenization of the quenching liquid is achieved, a U-shaped pipe magnetic attraction and sedimentation dual impurity removal mechanism is achieved, and the service life of the liquid is prolonged.

The invention discloses an oil-immersed transformer cooling system, and relates to the technical field of transformers, the oil-immersed transformer cooling system comprises a transformer body, heat dissipation fins, an oil conservator, a forced convection mechanism and a spraying mechanism, the transformer body comprises an oil tank, a winding and the oil conservator; the forced convection mechanism comprises a fan, the air outlet end of the fan faces the cooling fins, and the fan is started by sensing the oil temperature through an oil temperature sensor. The spraying mechanism comprises a water tank, a water pipe, a nozzle and a water pump, the water pump is driven by a fan shaft, and a cavity is formed in the fan shaft and communicated with the nozzle; comprising an adjusting assembly, the adjusting assembly comprises a sensing part and an adjusting part, and the sensing part senses the environment temperature through a bimetallic strip and drives the adjusting part to dynamically adjust the opening degree of a water inlet of a water pipe. The problems that in the prior art, due to the high environment temperature, the temperature difference between fins and the environment is reduced, and the heat exchange efficiency is affected are solved. The LED lamp has the advantages of being capable of adapting to the environment temperature, saving energy, dissipating heat efficiently and the like.

The invention discloses a cabinet cooling method and device, electronic equipment and a medium. The method comprises the steps that temperature data of multiple points in a space in a cabinet are collected; constructing a space temperature field based on the collected temperature data of the plurality of points in the space in the cabinet; constructing a heat source temperature state space model in an airflow balance state; constructing a forced convection heat dissipation temperature field based on a three-dimensional model of the cabinet, the space temperature field and the heat source temperature state space model; and determining the position of a local hot spot in the cabinet at least based on the forced convection heat dissipation temperature field, and arranging a guide plate in the cabinet according to the position of the local hot spot, so that cold air passes through the local hot spot and / or hot air is prevented from flowing back to the local hot spot. According to the invention, the heat dissipation performance of the cabinet is improved by analyzing the internal airflow organization of the cabinet and optimizing the air duct design.

The invention belongs to the technical field of additive design, comprises structure improvement and simulation analysis, and relates to an additive pipe fitting topological structure design method based on a three-period minimal curved surface. And different TPMS crystal lattices are applied to design, so that the TPMS system can adapt to various working conditions with different loads. Different filling modes are selected according to the geometrical morphology of the to-be-filled area, so that the number of interrupted areas is smaller, and the design freedom degree is higher. Through a gradient wall thickness command, a rod diameter gradual change effect appears in a non-contact area of a TPMS lattice and a part, and the supporting capacity is effectively enhanced under the condition that the removal difficulty is not improved. Adjustment of different unit densities enables TPMS crystal lattices to independently perform enhanced control on stress concentration points without affecting other areas. The actual conditions of a wind field and a temperature field are described through conjugate heat transfer analysis modeling, so that heat conduction and forced convection exist in the whole physical field at the same time, and the result accuracy is improved. According to static analysis, TPMS crystal lattices with the better strengthening effect are selected from the angle of load resistance.

The invention discloses a proton exchange membrane fuel cell bipolar plate flow channel structure based on a bionic structure, the proton exchange membrane fuel cell bipolar plate flow channel structure comprises a cathode flow field plate body and a plurality of gas flow channels arranged in the cathode flow field plate body, and two ends of each gas flow channel are respectively provided with a gas inlet and a gas outlet; a plurality of fin-shaped flow guide blocks are arranged in each gas flow channel, and flow channel side shrinkage flow guide blocks are arranged at the fin-shaped flow guide blocks; when the fin-shaped flow guide blocks and the side shrinkage flow guide blocks are used in a combined mode, a flow field in the flow channel can generate periodic forced convection in the direction perpendicular to the flow channel and can also generate periodic forced convection in the direction parallel to the flow channel. While the high gas passing ability is maintained, the flow field is accelerated by changing the vertical sectional area of the flow channel, and the convection effect of the gas to the GDL layer is actively enhanced.

The invention discloses a heat pipe thermophysical property testing device, system and method based on liquid cooling flow equalization, and the device comprises a liquid cooling flow equalization system which is provided with a plurality of parallel and mutually isolated flow channels, and a condensation section of a to-be-tested heat pipe is inserted into a liquid cooling cavity to form forced convection; an upper heating block and a lower heat insulation block of the heating unit clamp and fix an evaporation section of the heat pipe to be tested; the liquid cooling flow equalizing system is arranged on the inclination angle adjusting mechanism; the data acquisition unit comprises temperature sensors which are respectively arranged at liquid inlets and liquid outlets of the flow channels, and at least two temperature sensors which are arranged at a heat insulation section of the heat pipe to be tested; according to the system, a circulating water bath device, a high-pressure constant-flow pump, a filter and a testing device form a closed-loop liquid path. The real heat transfer amount of the heat pipe is inversely calculated through the heat absorption amount of the cooling liquid, the equivalent heat conductivity coefficient and the limit power are obtained by combining the two-point temperature difference of the heat insulation section, multiple heat pipes of different specifications are tested in parallel at a time, and the test efficiency and the data accuracy are improved.

The invention relates to the technical field of copper pipe heat dissipation, in particular to a micro-channel heat dissipation device based on a copper pipe structure, which comprises a heat dissipation substrate, a copper pipe type heat dissipation channel and a liquid cooling circulation system, the copper pipe type heat dissipation channel is composed of a plurality of plastic copper pipes and replaces a traditional micro-channel or vapor chamber structure. The copper pipe is embedded or fixed in the heat dissipation substrate or on the surface of the heat dissipation substrate, cooling liquid circulates in the copper pipe, and efficient heat dissipation is achieved through the combined action of forced convection heat exchange and heat transfer; the copper pipe has good plasticity and can be subjected to three-dimensional bending forming according to heat source distribution and spatial layout, through the synergistic effect of forced convection and phase change heat transfer, the heat transfer efficiency is improved, particularly, extremely high local heat flow density can be coped, the chip is effectively prevented from being overheated, and the heat transfer efficiency is improved. The heat dissipation channel can be bent and formed in a three-dimensional space according to heat source distribution, accurate matching with the heat source form is achieved, limitation of traditional plane heat dissipation is broken through, and optimal configuration of heat dissipation capacity and heat flux density is achieved.

The invention discloses mechanical part laser cutting machining equipment, and relates to the technical field of mechanical part machining. The device comprises a rack, a mounting plate is fixedly connected to the front face of the rack, and a laser cutting machine is fixedly connected to the bottom of the mounting plate; a protection mechanism is arranged on the front face of the laser cutting machine. A gear set is linked with a rotating shaft to drive the protective cover to be opened and closed stably, a guide column is matched with a sliding frame to enable the protective cover to move outwards to avoid collision, an extension rod compresses a spring for buffering during closing, meanwhile, an inner side cleaning pad makes contact friction with the laser cutting head, smoke residues are automatically removed, the cutting head is kept clean, the cutting precision is improved, and the service life of equipment is prolonged. The direction of the fan is intelligently switched along with the state of the protective cover, the protective cover is semi-opened during cutting, the fan obliquely adsorbs smoke dust in a cutting area, interference is avoided, the fan is vertically upward during closing, the fan cooperates with the heat conduction plate and the cooling fins to form a forced convection air channel, heat dissipation is accelerated, and the problems of cutting smoke dust pollution and equipment overheating are solved.

The invention relates to an operation method of a shell and tube heat exchanger for an organic Rankine cycle. A refrigerant is input into the cylinder through the liquid inlet connecting pipe and sequentially flows through the preheating area, the evaporation area and the overheating area. A high-temperature heat source enters from the water inlet chamber, sequentially flows through the evaporation area heat exchange pipe, the overheating area heat exchange pipe, the water return chamber and the preheating area heat exchange pipe and then is discharged from the water outlet chamber, and a reverse pure countercurrent flow heat exchange path is formed. In the preheating area, a refrigerant is preheated through a condensation heat exchange pipe of an inner-tooth outer-fin structure, and forced convection is formed by means of a baffle plate until the saturated evaporation temperature is reached; in the evaporation area, the refrigerant absorbs heat and is gasified in the evaporation heat exchange pipes on the outer surfaces of the micropores and the inner walls of the threads; and in the overheating area, refrigerant gas is subjected to overheating treatment through the heat exchange pipe with the reinforced turbulent flow structure, flows circuitously through the baffle plate and then is output to the expansion machine through the gas outlet connecting pipe. According to the method, preheating, evaporation and overheating functions are integrated in single equipment, and the heat exchange efficiency is improved and the system complexity is reduced by optimizing a heat exchange tube structure and a flow path in a partitioned manner.

A comprehensive climate adaptability permafrost subgrade hydrothermal regulation system is provided. The system includes a wind-driven forced convection cooling plate, a wind-driven device, a thermal insulation layer and a capillary blocking covering layer, where the wind-driven forced convection cooling plate is laid at a bottom of a subgrade, and a slender channel is arranged in the plate; the wind-driven device is connected with the slender channel in the wind-driven forced convection cooling plate, and a liquid working medium is driven to flow in the slender channel by a pump; the thermal insulation layer is laid on an upper part of the wind-driven forced convection cooling plate; and the capillary blocking covering layer is laid on a slope.

The utility model belongs to the technical field of tank car transportation, and particularly relates to a train tank forced raw material circulation heating device which comprises a telescopic guide mechanism, a machine pump is installed on the upper surface of the telescopic guide mechanism, and a hose connecting part is arranged on the lower surface of the telescopic guide mechanism. A feeding hose connected with an inlet of the pump and a discharging hose connected with an outlet of the pump are arranged in the hose connecting part, a feeding pipe and a discharging pipe are arranged below the hose connecting part, and the upper end of the feeding pipe extends into the hose connecting part and is connected with the feeding hose; the upper end of the discharging pipe movably extends into the hose connecting part and is connected with the discharging hose; a telescopic air cylinder is arranged in the hose connecting part, and an air cylinder rod of the telescopic air cylinder is fixedly connected with the discharging pipe. According to the heating device in the technical scheme, the heated medium in the train tank is forcibly conveyed to the low-temperature part of the train tank through the pump, so that the purpose of forced convection heat exchange is achieved, and the purpose of rapidly heating the medium in the train tank is achieved.

The utility model discloses a waterproof VR device with a heat dissipation function, which relates to the technical field of VR devices and comprises a middle shell and a battery. Heat dissipation holes are formed in the front side face and the rear side face of the middle shell, a rear cover is clamped to the bottom end of the middle shell, a lens barrel support is installed in the middle of the rear cover, a circuit board is placed on the front side of the top face of the lens barrel support, the battery is fixed to the top face of the lens barrel support, a fan is installed on the top face in the middle shell, and an upper cover is arranged on the top face of the middle shell. A sealing unit is mounted on the top surface of the middle shell; according to the waterproof VR equipment with the heat dissipation function, the middle shell, the upper cover and the rear cover are installed through dispensing, so that an electric device is sealed, liquid is prevented from entering the VR equipment to cause damage to the VR equipment, meanwhile, heat in the middle shell is guided out through the heat dissipation fins, the fan is started to continuously carry out forced convection heat dissipation to the outside, and the heat dissipation efficiency is improved. And the spring is matched with the sealing plate to prevent liquid from entering through the heat dissipation holes.

The invention relates to the technical field of electrical equipment, and discloses a relay protection screen cabinet and a use method thereof, the relay protection screen cabinet comprises a first cabinet body, a first opening and closing door and a second cabinet body, the top ends of the first cabinet body and the second cabinet body are fixedly provided with lifting hooks, and the back surfaces of the first cabinet body and the second cabinet body are fixedly provided with heat dissipation fins. According to the relay protection screen cabinet and the using method thereof, the fan cover is communicated with the mounting cover through the connecting groove, so that the fan cover can guide external airflow to enter the mounting cover through the connecting groove and be in full contact with the internal heat dissipation fins, a directional heat dissipation channel can be formed, heat dissipation of the first cabinet body and the second cabinet body can be enhanced, dust accumulation caused by exposure of the heat dissipation fins can be avoided, and the service life of the cabinet is prolonged. And through the design of the drainage plate, the airflow generated by the fans can be dispersed to each area of the heat dissipation fins by utilizing the guide of an inclined plane, and the two groups of fans face opposite directions, so that one fan can be used for air inlet, and the other fan can be used for air outlet, thereby forming forced convection from the bottoms of the first cabinet body and the second cabinet body to the tops of the first cabinet body and the second cabinet body.

This utility model discloses a high-temperature resistant cooling circulation structure for a fluoroplastic magnetic pump, specifically relating to the field of magnetic pumps. It includes a base, pump body, pump cover, connecting frame, isolation sleeve, inner magnetic rotor, outer magnetic rotor, motor, and impeller. The isolation sleeve, inner magnetic rotor, and outer magnetic rotor are all housed inside the connecting frame. The high-temperature resistant cooling circulation structure of this fluoroplastic magnetic pump features a spiral cooling channel inside the isolation sleeve. The coolant flows directly through the core area of ​​the heat source, rapidly absorbing heat transferred by magnetic eddy currents and high-temperature media through forced convection, thus improving cooling efficiency and effectively blocking heat transfer to the outer magnetic rotor, preventing permanent magnets from demagnetizing and failing due to high temperatures. Copper-nickel alloy heat-conducting fins are welded to the inner wall of the isolation sleeve, combined with a layer of thermally conductive silicone grease, accelerating the conduction of heat from the inner magnetic rotor to the cooling channel. A vacuum cavity is provided between the spiral cooling channel and the outer wall of the isolation sleeve to suppress heat conduction to the outer magnetic rotor, achieving double thermal isolation.

The utility model discloses a tubular flue gas cooler which comprises a flue gas inlet box, an inlet gas cooling tube bundle vertically connected to the bottom of the inlet gas box, a flue gas outlet box and an outlet gas cooling tube bundle vertically connected to the bottom of the outlet gas box, and the bottoms of the two tube bundles are communicated through an ash hopper to form a flue gas flow channel; a plurality of axial flow fans are arranged outside the flue gas flow channel, and air outlets of the axial flow fans are communicated with the outer wall space of the cooling tube bundle; a vibrating ash removal mechanism is arranged on the tube bundle; the axial flow fan and the temperature sensor group are interlocked to form a temperature adjusting assembly; and the vibration ash removal mechanism and the pressure transmitter group are interlocked to form a pressure difference response ash removal assembly. The air indirect cooling mode and the U-shaped flue gas flow channel design are adopted, forced convection heat exchange is conducted on the outer wall of the tube bundle through the variable-frequency axial flow fans, the moisture content and corrosivity of flue gas are prevented from being increased, and the cooling efficiency is improved by prolonging the residence time.

The invention provides a small-size light-weight high-power chip microstructure air cooling radiator, and belongs to the technical field of radiators. The present invention comprises: a substrate; the cavity is provided with a liquid working medium with latent heat of vaporization and is arranged on the substrate; the microstructure is arranged on the bottom surface in the cavity; the fins are provided with inner-section fins, middle-section fins and outer-section fins which are arranged on the periphery of the cavity in a crossed manner; and the fan is arranged above the fins. High-strength evaporation and boiling of the microstructure are utilized to strengthen coupling of a phase change heat transfer process and a heat conduction heat transfer process of each section of fins, the heating amount of a high-power chip is shared, the optimal height from a fan to the fins of the radiator is determined by utilizing a fin cross arrangement mode among the sections of fins and by means of the height of a distance cap, and the heat dissipation efficiency is improved. The forced convection heat transfer coefficient between the surfaces of the fins and the air is further improved, the heat transfer resistance of the high-power air-cooled radiator is remarkably reduced, the heat dissipation performance is improved, the weight of the high-power air-cooled radiator is reduced, and the size of the air-cooled radiator is reduced.

A graphene radiator is characterized in that the radiator comprises a heat dissipation substrate and fins arranged on the heat dissipation substrate, the heat dissipation substrate and the fins are integrally formed through injection molding of a graphene high polymer material, or the fins are formed on the heat dissipation substrate through injection molding of the graphene high polymer material on the heat dissipation substrate by adopting an alloy material. According to the graphene radiator, the graphene radiator which is good in heat dissipation effect, light in weight and low in machining difficulty is made of macromolecule graphene materials, the structure of the fins is improved, and a forced convection mechanism is changed into a heat radiation heat dissipation mechanism through graphene performance. And the problem that the heat exchange amount of a non-convection area is low or the local temperature is too high is solved.

The invention relates to a chip packaging structure and electronic equipment. The chip packaging structure comprises a heat conduction cavity, a heat dissipation assembly and a fan. The heat conduction cavity is arranged above the chip assembly and is in heat conduction connection with the chip assembly. The heat dissipation assembly is arranged in the heat conduction cavity and comprises a plurality of heat dissipation pieces arranged at intervals. The fan is arranged in the heat conduction cavity. The heat dissipation assembly and the fan are arranged at intervals in a plane parallel to the substrate, the heat dissipation assembly corresponds to the first chip, the orthographic projection of the heat dissipation assembly is at least partially overlapped with the first chip, the fan corresponds to the second chip, and the orthographic projection of the fan is at least partially overlapped with the second chip. The heat dissipation assembly and the fan are horizontally arranged in the heat conduction cavity side by side, and partition optimization of a heat dissipation path is achieved. The heat dissipation assembly establishes a collaborative heat dissipation path with upward heat conduction and forced convection for the high-heat-density chip, and the passive heat dissipation efficiency and the active heat dissipation effect are remarkably improved. Meanwhile, the vertical thickness of the packaging structure is effectively reduced through the layout, and the requirement for light and thin equipment is met.

The utility model relates to the technical field of aluminium foil production, especially a bearing seat cooling device, including main body support, main body support sets up at the outside of bearing seat, and and bearing seat's multiple surface is pasted, main body support includes liquid cooling module, hollow setting in liquid cooling module, be provided with annular opening on liquid cooling module, the middle part of bearing seat enters the opening, the inside of liquid cooling module is provided with the baffle, the baffle makes liquid cooling module inside form the chamber around bearing seat middle part, the temperature of bearing seat can be reduced in the flow of cooling liquid in the chamber, in the utility model, liquid cooling module makes cooling liquid and bearing seat multiple surface contact through the surrounding chamber, combines the forced convection of both sides air cooling module, forms " liquid cooling + air cooling " double heat dissipation, significantly reduces bearing seat temperature, avoids the lubricating oil failure or fire risk because of high temperature.

The utility model discloses a primary brine preheats high -efficient energy -conserving heater, including the casing, the both ends of casing are provided with the pipe box, is provided with multiple groups of heat exchange pipeline in the casing, be provided with multiple groups of disturbing wheel in the casing, be provided with two groups of support ring on the disturbing wheel, the inner wall connection of support ring and casing, the disturbing wheel rotation is arranged between two groups of support rings, be provided with multiple groups of disturbing vane on the disturbing wheel, and multiple groups disturbing vane are annular array distribution and set up on the disturbing wheel, the utility model discloses beneficial effect is: through being provided with multiple groups rotatable disturbing wheel and its annular array distribution disturbing vane in the casing, under the high temperature fluid flow impact passive rotation, forms the lasting, dynamic disturbance to the casing fluid, and this design effectively destroys the temperature boundary layer and the speed boundary layer of casing fluid, and strengthens the turbulence effect, and promotes high temperature fluid and heat exchange pipeline outer wall surface realizes more sufficient forced convection heat transfer.

The utility model provides a magnetically-driven base device, namely rhythm furniture. The magnetic drive base device comprises a fixing frame, a rhythm frame, a magnetic drive mechanism and a cooling fan, the magnetic drive mechanism comprises a coil assembly fixed relative to the fixing frame and a magnetic drive assembly fixed relative to the rhythm frame, the rhythm frame is arranged to be capable of reciprocating relative to the fixing frame, and the cooling fan is connected with the fixing frame. When the cooling fan works, airflow can be pushed to flow, so that the airflow flows through the outer surface of the coil winding in the coil assembly, forced convection occurs on the outer surface of the coil winding, heat accumulated on the outer surface of the coil winding can be taken away in time, and the temperature of the coil winding is within a reasonable range; a series of problems of low performance, short service life and the like caused by overheating of the coil winding are avoided.

The invention discloses a photovoltaic panel with a double-sided photovoltaic module positioning structure, and belongs to the technical field of photovoltaic modules. And a reflector. According to the photovoltaic panel with the double-sided photovoltaic module positioning structure, back incident light is subjected to high diffuse reflection through the reflector, front direct light and back reflected light can be utilized to the maximum extent, the generating capacity of a unit area is remarkably improved, meanwhile, airflow can be guided, forced convection is formed on the back of the module, the working temperature of the photovoltaic panel main body is effectively reduced, and the service life of the photovoltaic panel main body is prolonged. The photovoltaic panel main body is adjusted to be in a vertical state through the use of the turnover mechanism, the array can be controlled to rotate after the photovoltaic panel main body is polluted by sand dust, accumulated snow or bird droppings, and at the moment, attachments naturally slide down under the action of gravity due to the huge dip angle change, so that the manual cleaning cost and water consumption are greatly reduced, and meanwhile, the cleaning efficiency is greatly improved. And after continuous rotation, the back surface of the photovoltaic panel main body faces upwards, so that simple cleaning of the back surface is realized.

The utility model belongs to chassis apron technical field, especially relates to a modular splicing's new energy automobile chassis apron, including first apron, the one side of first apron is provided with second apron, the middle part of first apron is equipped with the heat dissipation cavity, the both sides of first apron and second apron are integrally formed and are provided with the mounting seat, the heat conduction component, the heat conduction component includes the heat dissipation fin of setting in the heat dissipation cavity inside, the upper end of first apron and the battery compartment lower end of automobile chassis are pasted, the both sides of heat dissipation cavity are provided with the guide plate, the splicing assembly, the splicing assembly includes the splicing groove of setting on first apron, the utility model discloses through first apron and battery compartment lower end pasting, has realized the quick conduction of battery heat, the heat dissipation fin in heat dissipation cavity has increased the heat exchange area, cooperates the guide plate of both sides and can be actively introduced in the airflow of automobile driving process, forms the efficient forced convection heat dissipation channel, has improved the heat dissipation efficiency of battery compartment bottom significantly.

The utility model belongs to the technical field of wire drawing annealing equipment, and discloses a copper rod processing annealing device which comprises an annealing box, a partition plate located in the annealing box and a cooling structure located above and on the right side of the partition plate, and the cooling structure comprises a top box fixedly connected to the top of the annealing box and a draw-off pump installed on the top box. The cooling device comprises an annealing box and a fan set assembled on the right side face of the annealing box, a spraying box is installed on the inner top wall of the annealing box and located on the right side of a partition plate, and a circulating purification box is arranged at the bottom of the spraying box. After the high-temperature copper wire enters a cooling area, air cooling airflow uniformly skims over the surface of the copper wire, a large amount of heat on the surface of the copper wire is rapidly taken away by means of a forced convective heat transfer mechanism between air and the copper wire, preliminary cooling is achieved, and the problem of thermal stress possibly caused by too large temperature difference in the subsequent water cooling process can be relieved to a certain extent.