34results about How to "Solve the cooling effect" patented technology

The invention provides mixing and stirring equipment for graphene production, and belongs to the technical field of graphene production, the mixing and stirring equipment comprises a reaction tank and a shell, the shell is fixed on the peripheral side wall of the reaction tank; the rotary material mixing structure is arranged inside and outside the reaction tank; and the heating and cooling assembly is arranged outside the shell and is used for heating and cooling the reaction tank. Through the arrangement of the rotary mixing structure, raw materials and a reducing agent in the reaction tank can be stirred while the reaction tank is automatically driven to rotate, the raw materials at the upper part and the lower part of the reaction tank can flow, the raw materials are prevented from being accumulated at the bottom of the reaction tank, and the mixing effect is improved; according to the reaction tank, the reducing agent and the raw materials can be effectively mixed, the mixing time is shortened, the mixing effect is improved, the production efficiency of graphene can be improved, and the problem that the raw materials and the reducing agent in the reaction tank are inconvenient to effectively mix in the prior art is solved.

The invention discloses a pouring device for castings. The product quality is improved. Comprising a tundish and a tundish shell, the bottom of the tundish shell is provided with a discharging installation hole, a turning plate installation supporting lug and a plurality of adjusting screw holes, the turning plate installation supporting lug is hinged to a turning plate, and a ceramic sealing plate is fixed to the turning plate; the tundish is provided with a discharging pipe opening, the discharging pipe opening penetrates through the discharging mounting hole, the end face of the discharging pipe opening is a sealed plane, the tundish is provided with a spherical surface, the number of the adjusting screw holes in the tundish shell is multiple, an adjusting bolt is arranged in each adjusting screw hole in a matched mode, and the end of each adjusting bolt makes contact with the spherical surface; a pressing stud is arranged on the tundish shell in the vertical direction, a supporting block is connected to the top of the pressing stud, a pressing adjusting bolt is arranged on the supporting block, and the tundish is fixed through the pressing adjusting bolt. The free end of the turning plate is hinged to one end of a driven rod, the other end of the driven rod is hinged to one end of a swing rod, and the other end of the swing rod is connected to a driving mechanism.

This application relates to a dining table and dining kit. The dining table includes a tabletop, heating elements, and an identification element. The tabletop has a placement surface with multiple independent heating zones. The heating elements are located within the tabletop and are used for heating. Each heating element corresponds to one heating zone, and each heating element can be independently controlled. The identification element is located within the tabletop and is used to identify the type of food package placed in the heating zone. The identification element corresponds to one heating zone. This solution uses the identification element to identify the type of food package in the heating zone, providing a basis for controlling the selected temperature for heating the food package. By controlling the opening and closing of the corresponding heating elements, the temperature of food packages in different heating zones can be controlled, achieving the effect of maintaining different temperatures according to the different types of food packages. This solves the problem of food cooling down and reducing its taste during meals.

The application discloses a complex sand core gas evolution and local temperature coupling control device which is composed of a central control cabinet, a circulating machine, a water tank, a vacuum pump, a sand core exhaust heat dissipation pipeline and a conformal patch, wherein the central control cabinet is connected with the circulating machine, the vacuum pump and a pouring control system, the main body of the central control cabinet is a central control computer and a PLC electric control system, and the central control cabinet is used for receiving a pouring signal and controlling the circulating machine and the vacuum pump; a cooling system is arranged in the circulating machine, a liquid inlet end of the cooling system is connected with the water tank, and a liquid outlet end of the cooling system is connected with a liquid inlet of the sand core exhaust heat dissipation pipeline; one end of the water tank is connected with the circulating machine, and the other end of the water tank is connected with a liquid outlet of the sand core exhaust heat dissipation pipeline; and the main body of the sand core exhaust heat dissipation pipeline is a copper pipeline, and the middle section of the copper pipeline is tightly attached to the conformal patch. The device can solve the problems that the existing sand casting technology cannot realize the local temperature field control of complex irregular inner cavities, the end sand core gas evolution cannot be discharged in time and the like, and high-quality cores which meet the complex inner cavity forming and quality requirements of high-end aluminum alloy castings can be produced.

The utility model discloses a gouging cutting cooling device with an auxiliary cooling structure, and relates to the technical field of gouging cutting. A supporting frame is fixedly installed at the bottom of the workbench, a containing plate is fixedly connected to the inner side of the supporting frame, a treatment box is fixedly installed at the top of the containing plate, a controller is fixedly connected to one end of the treatment box, a guiding frame is fixedly installed at the top of the treatment box and fixedly connected with the bottom surface of the workbench, and a water guiding groove is formed in the top of the workbench. The water guide groove is communicated with the interior of the guide frame, and a filter plate is fixedly mounted in the treatment box. According to the water cooling device, the motor drives the rotating rod and the stirring plate to rotate, water obtained after air gouging cutting riser cooling is completed is stirred, meanwhile, the fan can guide cold air and blow the cold air to the surface of the water to cool the water, the flowing time of the water can be prolonged through the guide part, and then the water cooling effect is improved to a certain degree.

By optimizing the structure of the water fetching wheel and dividing the water fetching wheel into a multi-stage water fetching structure by adopting reinforcing ribs, the water fetching wheel can form large-scale water mist according to different environmental conditions and water storage quantity states, the weight of the water fetching wheel is reduced, and therefore the refrigeration efficiency and the heat dissipation efficiency of a movable air conditioner are improved. The utility model further discloses the mobile air conditioner.

The utility model relates to the related technical field of converter high-position reblowing, and one embodiment of the utility model provides a converter high-position reblowing device which comprises a supporting frame and a protective cover, the protective cover is arranged in the supporting frame, a height adjusting assembly is arranged between the supporting frame and the protective cover, a reblowing assembly is arranged in the protective cover, and the reblowing assembly comprises a movable frame; the movable frame is movably connected into the protective cover in a sleeved mode, an air cavity is formed in the movable frame, an air pipe is arranged on one side of the movable frame and communicated with the interior of the air cavity, a plurality of nozzles are arranged on the side surface of the movable frame and communicated with the air cavity, a circulating cavity is formed in the movable frame, and a pair of circulating pipelines are arranged on the side end face of the movable frame. By means of the technical scheme, the technical problems that in the prior art, a high-position reblowing device of a converter generally has the defects of insufficient nozzle cooling protection and inconvenient height adjustment, the service life of a nozzle is short, and the adaptability of the reblowing process is poor are solved.

The utility model discloses an extended-range automobile with a standby battery, and belongs to the technical field of automobiles. The defect that in the prior art, a standby battery on an extended-range automobile is lack of a heat exchange device is overcome. The system mainly comprises a main battery, a main battery heat exchange tube is installed on the main battery and connected with a heat exchange loop, the system further comprises a standby battery, a standby battery heat exchange tube is installed on the standby battery, and the standby battery heat exchange tube is connected with the heat exchange loop and connected with the main battery heat exchange tube in series through the heat exchange loop.

The invention relates to a speed reducer performance optimization method and system based on multi-source data analysis, and relates to the technical field of performance optimization, and the method comprises the steps: obtaining the initial temperature of each part corresponding to a preset working node number on a speed reducer; determining a rated temperature range based on the working node number; comparing the initial temperature with a rated temperature range to screen unqualified temperatures and problem working node numbers; searching a corresponding cooling water pipe number based on the problem working node number; main water pipes corresponding to the cooling water pipe numbers are controlled to be opened for cooling. The worm gear has the effect of solving the problems that when the worm gear and the worm are meshed, large sliding friction exists, heat is likely to be generated, and long-time high-load operation cannot be achieved.

The present invention belongs to the technical field of plastic pipe processing, and discloses a cooling device for plastic pipe processing, comprising a cooling mechanism, wherein the cooling mechanism comprises a water pump, the top of the water pump is fixedly connected with a water outlet pipe, and the top of the water outlet pipe is fixedly connected with a shunt pipe; a cooling method for plastic pipe processing, the cooling method is as follows: S1, first fix the device at the discharge port of a plastic pipe production device; the present invention facilitates uniform cooling of the plastic pipe body by arranging the coordination of structures such as cooling pipes and water spray holes, starts the water pump, pressurizes the cooling water through the water pump so that it enters the inside of the shunt pipe through the water outlet pipe, and moves to the inside of two cooling pipes respectively through the shunt of a shunt plate, so that the coolant is sprayed out through a plurality of water spray holes evenly distributed on the cooling pipe under the action of water pressure and gravity, and the surface of the plastic pipe body located between the two cooling pipes is evenly cooled.

The utility model provides a kind of blow molding product cooling device, the blow molding product cooling technical field, including cooling bin, cooling bin is the hollow cylindrical structure of top end opening, still include: mould, spiral pipe, cooling liquid import, cooling liquid export and air cooling system, mould is set in cooling bin inner chamber middle part, for the water cooling temperature reduction of the blow molding product to be cooled in cooling bin;Spiral pipe is set in mould inner chamber, for the delivery of cooling liquid;Cooling liquid import is set in spiral pipe top end free end.The utility model adopts the double cooling system of water cooling and air cooling cooperation, can build efficient heat conduction channel from mould inside and outside, substantially speed up blow molding product cooling rate, effectively break through the efficiency bottleneck of single water cooling, especially can significantly shorten the cooling time of thick-walled blow molding product;The double cooling system is shortened by improving cooling efficiency Single product cooling cycle, make production rhythm adapt batch efficient operation demand, can be directly converted into capacity improvement, and can reduce unit product comprehensive cost.

The utility model discloses a kind of cooling tower fillings PVC sheet with improved corrugated structure, it is related to cooling tower cooling appliance technical field, including layer by layer stacked cooling plate, the top surface and bottom surface of cooling plate are installed with multiple film-coated strips, and film-coated strip is installed with guiding mechanism and the assembling mechanism of being convenient for cooling plate stacking;The utility model is coated by foaming layer on film-coated strip and cooling plate surface, it is convenient for foaming layer expansion after being heated, on one hand, the contact area of water and air can be increased, on the other hand, when foaming layer expands, surface scale will be extruded, it is favorable to ensure the cleanliness of cooling plate surface, improve cooling speed and cooling effect;Again through the cooperation of first deflector and second deflector, it is convenient for improving the flow speed of air and water, avoid the occurrence of channeling phenomenon, improve the utilization of filler;Finally solve the problem that existing device surface scale leads to poor cooling effect and low filler utilization.

The utility model provides an oil tank structure and an oil return system, the oil tank structure comprises an oil storage tank, the oil storage tank is provided with a containing cavity, the containing cavity is used for containing oil, the containing cavity is provided with an oil inlet, and the oil inlet is used for allowing the oil to enter the containing cavity; the balance structure comprises a separation part and an oil return tank, and the separation part is used for separating oil carried by the refrigerant; the separation part is communicated with the oil return tank; the oil return tank comprises an oil return pipeline; the oil return pipeline is communicated with the containing cavity and provided with an oil return valve, and the oil return valve is used for controlling the oil return pipeline to be connected or disconnected. The oil tank structure solves the technical problems that in the prior art, an oil tank is prone to oil leakage, and oil return is difficult.

This application provides a method, apparatus, device, vehicle refrigerator, and vehicle for controlling a vehicle refrigerator compressor, relating to the field of vehicle technology. The method includes acquiring the resonant speed of the vehicle refrigerator compressor and a pre-constructed set of operating speeds; the pre-constructed set of operating speeds includes compressor speeds corresponding to different vibration and noise performance characteristics; selecting a target operating speed from the pre-constructed set of operating speeds that avoids the resonant speed, and controlling the compressor to operate at the target operating speed. This application alleviates the limitations of traditional methods that solely limit speed in pursuit of NVH (Noise, Vibration, and Harshness), achieving a dynamic balance between NVH performance and cooling efficiency in vehicle refrigerators, effectively resolving the contradiction between slow cooling and vibration noise, and significantly improving user experience and overall vehicle comfort.

This application relates to an over-temperature monitoring device for the main shaft bearing of a GE wind turbine, belonging to the field of wind power generation technology. The device includes a wind turbine body comprising a tower, nacelle, bearing body, main shaft, and rotor. The circulating heat dissipation micro-ducts of this application are partially inserted inside the front end of the nacelle and partially wrapped around the surface of the bearing body, secured by clamps and tightly fitted to the bearing surface. During operation, driven by a pump, circulating liquid in the storage tank flows through the pipes, absorbs heat from the bearing, enters the cooling device for cooling, and then flows back to the storage tank to form a cycle. Compared to external fan cooling, the pipes directly contact the core heat-generating area of ​​the bearing, ensuring timely heat transfer and significantly improving cooling efficiency, solving the problems of low air cooling efficiency and difficulty in applying cool air to the core area. Temperature detectors are installed inside the bearing body, with multiple detectors distributed in different locations. During operation, the temperature of various parts of the bearing is collected in real time and the data is transmitted to an external controller.

A complex sand core gas generation and local temperature coupling control device is disclosed. The device comprises a central control cabinet, a circulating machine, a water tank, a vacuum pump, sand core exhaust and heat dissipation pipes, and conformal patch. The central control cabinet is connected to the circulating machine, vacuum pump, and pouring control system. The main body of the central control cabinet is a central control computer and a PLC electrical control system, used to receive pouring signals and control the circulating machine and vacuum pump. The circulating machine has an internal cooling system; its inlet is connected to the water tank, and its outlet is connected to the inlet of the sand core exhaust and heat dissipation pipes. One end of the water tank is connected to the circulating machine, and the other end is connected to the outlet of the sand core exhaust and heat dissipation pipes. The main body of the sand core exhaust and heat dissipation pipes is a copper pipe, with its middle section tightly fitted to the conformal patch. This device can solve the problems of existing sand casting technology, such as the inability to achieve local temperature field control in complex irregular internal cavities and the inability to timely discharge gas generated from the end sand core, producing high-quality cores that meet the forming and quality requirements of complex internal cavities in high-end aluminum alloy castings.

The utility model relates to a new energy battery package heat management water route system, include: water tank, water tank is provided with main water pump, cooling pipeline is connected main water pump and surrounds the arrangement in new energy battery package outside, cooling pipeline series connection new energy battery package's high temperature area and low temperature area, to realize the directional circulation of cooling medium, multi -way joint, the multi -way joint is provided with a plurality of, a plurality of multi -way joint distribution new energy battery package's temperature difference abnormal area, temperature difference abnormal area is new energy battery package's corner area, and cooling pipeline forms the network branch through a plurality of multi -way joints, relay water pump, relay water pump is close to the network branch entrance of temperature difference abnormal area setting, is used for providing relay pressure for cooling medium, the utility model discloses through the local pressure boost of relay water pump, realizes the zoned control of cooling medium flow, through the series connection high temperature area and low temperature area of cooling pipeline, promotes high and low area coolant interactive circulation, effectively eliminates the heat accumulation to eliminate the temperature gradient in battery package interior.

The application provides an automobile chassis and an automobile, wherein a solid-state battery system is integrated in the automobile chassis, the automobile chassis further comprises a vehicle body bottom plate, a main frame and a chassis cross beam, the vehicle body bottom plate and the chassis cross beam are connected with the main frame respectively, and the solid-state battery system is installed on the chassis cross beam.

The application discloses a motor end portion potting tool and a use method thereof. The motor end portion potting tool comprises a main body and a separation cylinder. The main body is detachably sleeved on a central shaft of a motor, and an outer wall of the main body abuts against an inner wall of a shell of the motor. The bottom of the separation cylinder is fixedly connected with the main body. A space surrounded by the outer portion of the separation cylinder, the main body, the central shaft, the shell and a stator core of the motor forms a potting cavity. A potting glue is filled in the potting cavity. The potting glue forms a potting body after solidification, so as to conduct heat and seal and protect the end portion of the motor. The potting process is applied to the manufacturing of the permanent magnet motor, and plays a crucial role in improving the heat dissipation performance, sealing protection performance and shock absorption and noise reduction performance of the motor.

The application discloses a kind of auxiliary drive all-in-one integrated power supply controller assembly, including upper cover plate, big contactor and fuse component, wiring terminal seat component, tray component, first DCDC, first DCAC, shell, water cooling component, second DCDC, second DCAC, lower cover plate, the upper cover plate and lower cover plate are respectively connected in the upper and lower ends of shell, big contactor and fuse component, tray component, first DCDC and first DCAC, water cooling component, second DCDC and second DCAC are sequentially arranged in shell from top to bottom, wiring terminal seat component is arranged in shell respectively with first DCDC, first DCAC, second DCDC, second DCAC electrically connected, big contactor and fuse component are electrically connected with wiring terminal seat component;The water cooling component is used for the cooling of power supply controller assembly;The application is higher, can cover compatible multiple DCDC and DCAC use scene, can satisfy two-way fast charging and the demand of multiple MCU and PDU power distribution.

The present invention discloses a box transformer for energy storage with coils that can dissipate heat quickly. The present invention relates to the technical field of energy storage box transformer stations, including a bracket, the top of the bracket is fixedly connected to a frame, the inner side of the frame is fixedly connected to a transformer coil, the inner side of the transformer coil is fixedly connected to an iron core, the surface of the transformer coil is fixedly connected to a connecting rod, and the surface of the transformer coil is provided with an air passage that runs from top to bottom. The box transformer for energy storage with coils that can dissipate heat quickly can achieve gas flow in the air passage inside the transformer coil, so that the heat on the surface of the transformer coil is quickly taken away, the screw slide controls the movement of the rotating plate, thereby adjusting the angle between the rotating plate and the support plate, and the direction of the airflow output by the heat dissipation mechanism is changed, so that the gas in the transformer coil flows more evenly, solving the problem that there is a risk of water leakage and electric leakage when directly transferring heat and cooling the interior of the transformer box using a coolant flow.

This invention belongs to the field of refrigerant technology and discloses a mixed refrigerant and its application. The mixed refrigerant is composed of two or three of ethane, propane, propylene, and difluoroethane. When ethane is included, its mass percentage in the mixed refrigerant does not exceed 10%, or is between 21% and 50%. When difluoroethane is included, its mass percentage is between 65% and 85%. This invention, by improving the composition and proportion of each component of the mixed refrigerant, solves the technical problems of high GWP values, low energy efficiency, low volumetric refrigeration capacity, and poor refrigeration performance associated with existing refrigerants. It can be used to replace R32 or R290, has a low exhaust temperature, high volumetric refrigeration capacity, and requires less refrigerant charge, and can be used to replace high GWP refrigerants such as R32 and R410A.

The invention discloses a Tokamak plasma vacuum cavity wall body layered embedded pipe gradient heat utilization device, which is characterized in that a Tokamak vacuum cavity wall body is provided with a three-layer structure of an inner wall, a middle wall and an outer wall, and a high-temperature heat exchange pipe group, a middle-temperature heat exchange pipe group and a low-temperature heat exchange pipe group which are in arc fit are respectively embedded in the three-layer wall body; the distance between the plasma and the inner wall of the vacuum cavity is regulated and controlled through magnetic confinement, accurate adjustment of heat flux density is achieved, plasma heat is conducted from inside to outside in a stepped mode, the inner wall high-temperature heat exchange pipe set generates ultrahigh-temperature high-pressure steam for large-scale power generation, and the middle-wall medium-temperature heat exchange pipe set generates medium-temperature high-pressure steam for small-scale power generation. The outer wall low-temperature heat exchange pipe set heats water through waste heat to supply heat, and the distillation drinking water heat exchange pipe set achieves self-driven circulation through water vaporization natural impulsive force and also serves as a vacuum cavity wall body cooling protection layer. According to the device, Tokamak plasma heat cascade full utilization is achieved, the heat conduction efficiency is extremely high, the structure is simple and easy to achieve, direct output of multi-level energy can be completed only through the three-layer embedded pipe design of the vacuum cavity wall body, and the technical core focuses on heat exchange and energy distribution of the vacuum cavity body and the layered embedded pipes; and high-efficiency commercial conversion of nuclear fusion heat energy is adapted.

The invention relates to the technical field of vehicles, in particular to a motor cooling structure and system, a vehicle and a motor cooling method. The structure comprises a stator core and a stator winding arranged on the stator core, the multi-layer oil injection assembly is arranged on the first part of the stator winding and used for injecting axial multi-layer cooling oil to cool the upper half part of the outer ring of the stator winding; and the oil guide groove is fixed at the second part of the stator winding and is used for guiding the cooling oil sprayed from the upper half part to cool the lower half part of the outer ring of the stator winding. Therefore, the problems of low heat dissipation efficiency, poor cooling effect and the like existing in a water-based cooling or oil injection cooling mode in the prior art are solved.

This invention discloses a heat dissipation control method and device based on the synergistic coupling of piezoelectric jet and thermoelectric cooling. The heat dissipation control method includes: controlling a piezoelectric ceramic driving plate to drive an intake flexible valve plate to generate periodic bending deformation, thereby changing the volume of the compression chamber, so that the compression chamber alternately performs the intake process and the compression process; during the compression process, when the pressure difference between the compression chamber and the external environment pressure reaches the opening threshold determined by the pre-tightening force and effective pressure area of ​​the outlet flexible valve plate, the outlet flexible valve plate passively generates an opening deformation, so that the cooling fluid in the compression chamber is injected into the air inlet of the heat exchange module in the form of a jet through the air outlet; the heat from the heat source is absorbed by the cold end of the thermoelectric cooling module, and the heat is transferred to the hot end of the thermoelectric cooling module, and then transferred to the heat exchange module, and carried away by the cooling fluid injected from the air inlet of the heat exchange module, fundamentally avoiding the risk of fatigue failure of traditional mechanical valve plates.

The application provides a control method, device, equipment, storage medium and program product of a liquid cooling unit. The method determines a first maximum temperature value of a battery corresponding to the liquid cooling unit; generates a refrigeration instruction of the liquid cooling unit if the first maximum temperature value exceeds a preset temperature threshold; starts the liquid cooling unit based on the refrigeration instruction, and feeds back an operating current of a compressor motor and a pressure difference value; determines whether the liquid cooling unit has been successfully started based on the operating current and the pressure difference value, and performs refrigeration monitoring on the liquid cooling unit if the liquid cooling unit has been successfully started. The application controls the triggering of the refrigeration instruction of the liquid cooling unit by monitoring the temperature of a battery cluster corresponding to the liquid cooling unit in real time; determines whether the liquid cooling unit has been successfully started in combination with the received feedback information, thereby avoiding the risk of battery thermal runaway caused by the disconnection between the refrigeration instruction and the execution state; in addition, the diagnosis control of the liquid cooling unit is realized through software logic, thereby improving the operation reliability and the diagnosis accuracy of the liquid cooling unit.

The utility model relates to the technical field of power cable splitter connection monitoring, in particular to a temperature monitoring device of a power cable integrated T-connection terminal, which comprises a lower box body, a connecting frame, an upper box body, a power supply module, a temperature monitoring mechanism and a heat dissipation assembly, and is characterized in that the connecting frame is detachably connected with the lower box body, and the upper box body is detachably connected with the connecting frame; the power module is fixedly connected with the lower box body and located in the lower box body, the temperature monitoring mechanism is connected with the power module through a wire and located on the outer side of the power module, the heat dissipation assembly comprises four sets of fixing parts and two sets of circulating parts, the fixing parts are fixedly connected with the lower box body and located on the outer side of the lower box body, and the circulating parts are fixedly connected with the upper box body and penetrate through the upper box body. Therefore, external cooling operation can be conveniently carried out on the T-connection terminal, equipment operation does not need to be stopped, maintenance personnel can have enough maintenance preparation time, and production efficiency loss and economic loss are reduced.

The utility model relates to the field of water curtain cooling, and discloses a henhouse water curtain cooling device which comprises a water tank, a U-shaped frame is fixedly connected to one side of an inner cavity of the water tank, a water curtain is arranged in an inner cavity of the U-shaped frame, a water guide plate is arranged at the top of the U-shaped frame, a water guide groove is formed in the inner wall of the water guide plate, and a water outlet is formed in the inner wall of the water guide groove. According to the water curtain cooling equipment for the chicken house, when water flow passes through the water curtain to form a water film to absorb heat and evaporate to cool the environment, the cooling fan is matched with the semiconductor cooler to reduce the temperature of the cooling plate, and the cooling effect is improved; water flowing through the water curtain can flow back to the water tank after being filtered and cooled under the action of the filtering mechanism and the refrigerating plate, the purpose of cooling backflow water is achieved, it is guaranteed that the temperature of water in the water tank cannot rise to affect subsequent henhouse cooling, and the problem that the cooling effect is affected due to the fact that the water temperature of existing water curtain cooling equipment rises gradually is solved.

The invention relates to the technical field of cooling of high-rotating-speed and high-capacity hydro-generators and pumped storage generator motors, in particular to a device and method for improving temperature rise uniformity of a pole coil of a hydro-generator. The device comprises a shroud ring; the bottom edge of the shroud ring wraps the fixed inner diameter side shroud ring insulator; protruding parts on the two sides of the inner diameter side shroud ring insulator are buckled on the two sides of the shroud ring bottom edge. Inner side insulating plates are arranged between the inner side surface of the pole coil and the pole iron core and are positioned on the two sides of the circumferential ventilation holes of the pole coil; the inner side insulating plate is provided with a gap, and the gap is respectively fixed with the protruding part of the inner diameter side shroud; the inner side insulating plate, the inner diameter side shroud ring insulator, the magnetic pole coil and the magnetic pole iron core define a magnetic pole inner ventilation cavity; the shroud ring is provided with a side vent hole which is communicated with the circumferential vent hole of the pole coil; bottom air guide holes are formed in the bottom of the shroud; cooling of the pole coil at the shroud ring is achieved, the temperature difference of the pole coil is effectively improved, and the temperature rise uniformity of the pole coil is improved.