93results about How to "Lower operating temperature" patented technology

The invention discloses a high-temperature and high-pressure fluid lubrication rotating plane frictional wear testing device, and belongs to the technical field of extreme working condition tribology testing. The device is characterized in that a lifting device and a loading cylinder are simultaneously fixed at the top of a test stand bracket, a piston rod of the loading cylinder is connected with a tension sensor and a water-cooling loading shaft, and the water-cooling loading shaft is connected with a lower sample piece (static ring) in a high-temperature and high-pressure test cavity through a spherical universal joint; the oil-cooling main shaft is fixedly connected with an upper sample piece (moving ring) in the high-temperature and high-pressure test cavity through a locking nut, so that the axial load of the water-cooling loading shaft and the oil-cooling main shaft in a non-concentric state can be uniformly loaded, and the end surfaces of the upper sample piece and the lower sample piece can be automatically attached to each other. The upper part of the high-temperature and high-pressure test cavity is connected with the water-cooling jacket, and the lower part is connected with the bearing cavity. High pressure of the test chamber is guaranteed by a high-pressure water station system, and high temperature is adjusted and controlled by an electric heater and a water cooling jacket. The device can realize the rotary sliding friction wear test of a friction pair in a high-temperature and high-pressure water environment.

The invention provides a method for preparing active copper oxide by recycling ammonia and carbon. The method comprises the following steps: step 1, preparing a copper dissolving reagent from ammonia water and carbon dioxide; 2, the copper raw material and a copper dissolving reagent are mixed, oxygen or air is introduced, heating and pressurizing are carried out for an ammonia leaching complexing reaction, and a copper ammonia complex is obtained; step 3, after the copper ammonia complex is filtered, rectifying to remove ammonia and carbon, producing ammonia gas and carbon dioxide at the tower top, and producing basic cupric carbonate slurry at the tower kettle; 4, centrifuging and drying the basic cupric carbonate slurry to obtain a basic cupric carbonate solid; and 5, calcining the basic cupric carbonate solid at high temperature to produce active copper oxide. According to the active copper oxide preparation method capable of recycling ammonia and carbon, the active copper oxide with high purity and uniform particle size can be directly prepared.

The utility model provides an atmospheric and vacuum five-tower distillation device with an energy-saving effect, which comprises a primary distillation tower, a negative pressure tower, an atmospheric tower and a vacuum tower, the negative pressure tower comprises a first negative pressure tower and a second negative pressure tower, the top of the first negative pressure tower and the top of the second negative pressure tower are respectively connected with a first negative pressure tower reflux device and a second negative pressure tower reflux device; a negative pressure tower reboiler is arranged at the middle lower part of the negative pressure tower I, and the pressure of the negative pressure tower I is higher than that of the negative pressure tower II; the two negative pressure towers are additionally arranged between the primary tower and the atmospheric tower, vaporized gasoline and kerosene components can be separated in time, the irreversible degree of heating and cooling is reduced, and the purpose of saving energy is achieved; due to negative pressure operation of the first negative pressure tower and the second negative pressure tower, the operation temperature in the two negative pressure towers is reduced, utilization of low-grade heat of the system is facilitated, it is guaranteed that all gasoline components and part of kerosene components of crude oil are completely extracted before entering the atmospheric towers, energy consumption is reduced, the heat utilization rate is increased, and the crude oil separation precision is improved.

The invention is suitable for the field of cycloidal speed reducers, and provides an RV speed reducer which comprises a shell assembly, an input assembly and a speed reduction assembly and is characterized in that the shell assembly comprises a front supporting shell, a rear supporting shell, a positioning bolt and a positioning shaft, and the front supporting shell and the rear supporting shell are fixedly installed through the positioning bolt; positioning holes are annularly formed in the supporting front shell and the supporting rear shell, the positioning shaft is installed in the positioning holes in a rolling mode, the speed reduction assembly comprises a speed reduction sealing cover, a planet assembly and a main speed reduction assembly, the speed reduction sealing cover is installed in the supporting front shell through a bearing, and the circle center of the speed reduction sealing cover coincides with the circle center of the supporting front shell; and the kinetic energy transmission efficiency and the maximum running speed are improved, so that the joint is more suitable for high-speed robot speed reduction joints. Pitting corrosion, micro pitting corrosion and eccentric wear of the balance wheel are avoided, and the service life of the speed reduction assembly is prolonged.

The utility model discloses a photovoltaic photo-thermal liquid flow window, which relates to the field of photovoltaic building integration and comprises outer side glass, a partition cross bar, inner side glass, a solar cell module, circulating water, a circulating water inlet, a circulating water outlet, a shell-and-tube heat exchanger, a water pump, an aluminum alloy side frame, an upper frame and a lower frame. The outer side glass is whole-surface light-transmitting glass and faces outdoors, the upper section of the inner side is inner side glass, and the lower section of the inner side is a solar cell module; the inner side glass and the solar cell module are separated by a separation cross bar, and two ends are welded on the aluminum alloy side frame; the circulating water is deionized water and is positioned between the outer side glass and the inner side glass; the circulating water inlet and the circulating water outlet are respectively positioned in the middle positions of the aluminum alloy lower frame and the aluminum alloy upper frame; the heat exchanger is driven by a water pump to perform internal circulation and exchanges heat with an external circulation working medium through a shell-and-tube heat exchanger; the light transmission of the window is not influenced, the battery is cooled, the temperature is reduced, the efficiency is improved, the utilization efficiency of electricity, heat and solar energy is high, and the return on investment period is shortened.

The invention discloses a grid-connected automatic detection and adjustment system for a generator car, and relates to the technical field of power supply equipment. The system comprises a real-time monitoring module at the output end of the generator and an adjusting module of the transformer, and achieves the precise control of the grid-connected output voltage and current. According to the system, the heat dissipation design based on cooling liquid phase change circulation is adopted, a multi-heat-source heat dissipation mechanism of an internal combustion engine negative pressure fan and a gas guide channel is combined, and the heat dissipation efficiency and the equipment operation stability are guaranteed. In addition, by means of the sliding disc transmission design of the internal combustion engine and the generator, optimization of anti-seismic performance and axis alignment is achieved. The planetary gear is controlled through the adjusting motor, stepless transmission ratio adjustment is completed, and the operation efficiency and the adaptive capacity are greatly improved.

A switch case disclosed by the present invention comprises a case body mechanism, a modular mechanism and a heat dissipation mechanism, the heat dissipation mechanism is inserted into the case body mechanism, the modular mechanism is inserted into the case body mechanism, and the case body mechanism comprises a machine body unit and a cover plate unit. And the cover plate unit is in threaded connection with the top of the machine body unit. By adopting the modular design, when the network scale is expanded or new functions need to be added, only corresponding modules need to be added, and the whole case does not need to be replaced, so that the extension and upgrade cost is greatly reduced, the extension and upgrade time is greatly shortened, extension and upgrade are easy, and the heat dissipation efficiency is improved by optimizing the design of a heat dissipation system. According to the heat dissipation system, the operation temperature of the switch can be effectively reduced, so that the energy consumption of the heat dissipation fan is reduced, meanwhile, the optimal design of the heat dissipation system also can avoid potential safety hazards caused by overheating, and the side surface is matched with the top heat dissipation design, so that air flow can be formed, and heat can be rapidly extracted.

The present invention relates to the technical field related to permanent magnet motors, and discloses a large-torque explosion-proof permanent magnet motor with a cooling and regulating function, comprising a self-regulating heat dissipation component, an active heat dissipation component, a drive component, an integrated exhaust and collection device, and a dynamic thermal management wind control unit arranged in sequence from the tail to the end, the dynamic thermal management wind control unit comprising a second wind control unit component and a first wind control unit component, the first wind control unit component is arranged above the second wind control unit component, and the first wind control unit component and the second wind control unit component are arranged alternately; the present invention uses the second wind control unit component and the first wind control unit component, the second wind control unit component and the first wind control unit component are symmetrically arranged and staggered, and work together to achieve alternating suction and discharge of airflow, and when the drive device in the first wind control unit component is started, the drive device will push the arc push plate to move outward.

The utility model discloses an air compressor waste heat recovery device, including crankcase, the crankcase front end is provided with the drive motor, the upper end of crankcase is connected with the compression box, the upper end right side communication of compression box has the air inlet pipe, the upper end of air inlet pipe is connected with the air filter cartridge, the upper end left side communication of compression box has the air outlet pipe, the outside of compression box is connected with a plurality of water cooling fin, a plurality of water cooling fin outside sleeve joint has the air cooling cover, a plurality of water cooling fin left and right two ends all communicate with the distribution pipe, the utility model discloses through the synergies of water cooling fin and air cooling cover, carries out water cooling and air cooling heat exchange in compression box outside simultaneously, utilizes the high heat capacity characteristic of water cooling system to absorb most compression heat again through the air cooling system intensification heat dissipation efficiency, realizes the double recovery of waste heat, and the waste heat recovery efficiency is high. Cold water is heated after entering secondary heat exchange stage through water cooling fin, and the air of air cooling system heating can be directly used for workshop heating, forms energy cascade utilization.

The invention discloses a regeneration method and application of an iron-based catalyst. The regeneration method of the iron-based catalyst comprises the following steps: S1, contacting an inactivated iron-based catalyst with a regeneration solution for pretreatment to obtain an intermediate product; the regeneration solution comprises N-methyl pyrrolidone, and the concentration of the N-methyl pyrrolidone is greater than or equal to 3%; s2, roasting the intermediate product to obtain a regenerated iron-based catalyst; the roasting temperature ranges from 250 DEG C to 300 DEG C. The regeneration method of the iron-based catalyst provided by the invention is high in regeneration efficiency, and the prepared regenerated catalyst is good in catalytic performance.

The invention provides a continuous forming and gradient flooding method and device for a spherical energetic material. The method comprises the following steps: forming liquid medicine into uniform micro-drops through a micro-channel device, and sequentially feeding the uniform micro-drops into three stirring kettles which are connected in series: curing and forming in a first stirring kettle at 5-25 DEG C, overflowing into a second stirring kettle, carrying out low-temperature flooding at 40-60 DEG C so as to remove more than 80% of solvent, overflowing into a third stirring kettle, and completing high-temperature deep flooding at 70-90 DEG C, and finally cooling to room temperature through a cooling device. And the three stirring kettles realize continuous transfer through an overflow structure, and manual intervention is not needed. The device comprises a metering pump, a micro-channel device, three stirring kettles connected in series and a cooling device. Through the gradient strategy of low-temperature pre-desolvation and high-temperature deep desolvation, the contradiction between particle softening deformation and solvent residue in the traditional process is solved, the particle size distribution deviation of the spherical energetic material is smaller than or equal to 5%, the deformation rate is smaller than or equal to 2%, the solvent residue is smaller than or equal to 50 ppm, the production continuity is improved by 40% or above, and the method is particularly suitable for continuous production of temperature-sensitive energetic drugs.

The application belongs to the technical field of electric tricycle motors, in particular to an electric tricycle motor protection assembly, which comprises a motor body, the motor body is a permanent magnet synchronous motor, a protection plate is arranged outside the motor body, a connecting block is fixed to one side of the motor body close to the protection plate, an extrusion block is fixed to the side of the connecting block away from the motor body, a buffer spring is fixed between the extrusion block and the protection plate, an extrusion rod is arranged inside the buffer spring, and the extrusion rod is fixedly connected with the protection plate. The protection plate is first contacted with the pit or the protrusion, so that the motor body is protected, and in this process, the protection plate compresses the buffer spring to deform, thereby buffering the impact force. Thus, the motor of the electric tricycle is effectively protected from damage caused by bumps during normal driving, and the service life of the electric tricycle is improved.

This application relates to a motor heat dissipation mechanism for a vacuum cleaner, belonging to the field of mechanical heat dissipation. It includes a stator, a rotor, an air inlet housing, a rotating shaft, an end cover, a moving impeller, and a first stationary impeller. The stator is fixed inside the first stationary impeller, and the moving impeller is located inside the air inlet housing. There is a gap between the outer circumferential wall of the moving impeller and the inner wall of the air inlet housing. The first stationary impeller is fixedly connected to the end cover, and the rotating shaft is rotatably connected to the first stationary impeller. A cooling air duct is provided between the inner wall of the first stationary impeller and the outer wall of the stator. A baffle shell is fixedly provided on the outer circumferential wall of the first stationary impeller and is fixedly connected to the air inlet housing. A second stationary impeller is coaxially fixed at the end of the first stationary impeller near the moving impeller, and the outer circumferential wall of the second stationary impeller is in contact with the inner wall of the air inlet housing. A cover plate for mounting a circuit board is fixedly provided at the end of the end cover away from the first stationary impeller, and the end cover has several ventilation holes. This application has the effect of reducing dust accumulation in the vacuum cleaner motor and achieving simultaneous and efficient heat dissipation.

The utility model belongs to the technical field of cement processing, and particularly relates to an equipment heat insulation structure, which comprises a heat resistance component mounted between a cement mill cylinder and a slide shoe bearing, the heat resistance component comprises a support framework fixedly connected to the outer wall of the cement mill cylinder and an annular frame in sliding connection with a support tile, the supporting framework is fixedly connected with the annular frame, the heat resistance assembly effectively blocks transmission of heat of materials in the cement mill barrel by separating the cement mill barrel from the supporting tile from direct contact, and therefore the operation temperature of the sliding shoe is reduced, and the heat resistance assembly is arranged between the cement mill barrel and the sliding shoe bearing, so that the heat resistance of the cement mill barrel is improved. The cement mill cylinder and the supporting tile are separated from direct contact, so that heat of materials in the cement mill cylinder transferred to the sliding shoe can be effectively reduced, the running temperature of the sliding shoe is reduced, the cement mill is prevented from being shut down due to too high temperature, the production problem is effectively solved, and smooth production is guaranteed.

The invention discloses a production device and method for supercritical fluid extraction of rose essential oil, and the device comprises a raw material warehouse, a cleaning unit, a drying unit, a crushing unit, an extraction cylinder, a filter, a first separator, a second separator and a rose essential oil receiver which are connected in sequence, and also comprises a CO2 storage tank, a high-pressure pump, a heat exchanger and a waste storage device; the method specifically comprises the following steps: (1) selecting rose petals; (2) soaking, cleaning, flushing and draining water; (3) drying; (4) crushing and sieving; (5) supercritical extraction; (6) filtering, separating and reducing pressure; and (7) storing the crude product of the rose essential oil, recycling the separated supercritical fluid, and storing the filtered rose petal powder. The rose essential oil is extracted by adopting supercritical CO2, and the method has the advantages of high quality, high yield, high efficiency, low operation temperature, high safety, no solvent residue, environment friendliness and the like.

According to the technical scheme, the embedded network fault diagnosis device is characterized in that the embedded network fault diagnosis device comprises a heat dissipation mechanism; the heat dissipation mechanism comprises a mounting base, two sets of overhead limiting mechanisms are assembled on the upper end face of the mounting base, and a network fault diagnosis equipment body is jointly assembled between the two sets of overhead limiting mechanisms. According to the embedded network fault diagnosis device, the heat dissipation fans installed in the two installation grooves formed in the upper end face of the installation base are matched with the multiple air inlet grooves formed in a penetrating mode to form a complete forced convection heat dissipation system, and the air inlet grooves are distributed around the heat dissipation fans in a surrounding mode, so that the sufficient and uniform air inlet amount is ensured; after external cold air is sucked in from multiple directions of the bottom of the mounting base, the external cold air is blown upwards to the bottom of the network fault diagnosis equipment body through the cooling fan, the operation temperature of the equipment is effectively reduced, a positive and negative tooth screw rod mechanism is matched with a transmission system of a transmission belt, and the accurate synchronous adjustment function of the clamping width is achieved. And network fault diagnosis equipment bodies with different sizes can be adapted.

The present application relates to the technical field of concrete vibrating equipment, and discloses a fiber concrete vibrator for residential garage construction, including a flat plate, a connecting frame is provided on the flat plate, the flat plate is connected to a motor through a buffer platform, the motor is connected to the vibrator through a second transmission unit, the second transmission unit is configured to isolate vibration, and the motor is connected to a mobile frame through a first transmission unit. In the fiber concrete vibrator for residential garage construction, the motor and the second transmission unit drive the vibrator to make the vibrator vibrate, and the motor is arranged on the buffer platform, the motor and the vibrator generate heat respectively, and do not overlap each other, and the motor is in an environment with relatively small vibration when running, which increases the service life, and secondly, a scraper is provided in front of the flat plate, and the scraper reciprocates to flatten the concrete in front, so that the bottom of the connection between the flat plate and the vibrator will not be suspended, which not only ensures the vibration effect, but also reduces the probability of deformation of the flat plate.

The present invention relates to the field of motors, and in particular to a three-phase asynchronous motor with a self-dust removal and heat dissipation structure, comprising a mounting seat, a controller, a fan, a cleaning mechanism and a lubricating mechanism. A casing is fixedly arranged on the top of the mounting seat, a casing is fixedly arranged on one end of the casing by a plurality of bolts, a plurality of air inlet holes are opened on the outer wall of the casing, the cleaning mechanism comprises a cleaning brush and a driving assembly, the lubricating mechanism comprises an oil tank, a transmission assembly, a rotating assembly, an extrusion assembly and two atomizing nozzles, the extrusion assembly is inserted into an oil receiving pipe, the rotating assembly is arranged between the transmission assembly and the extrusion assembly, the two atomizing nozzles are symmetrically arranged inside the casing, and the driving assembly is electrically connected to the controller. The three-phase asynchronous motor with a self-dust removal and heat dissipation structure of the present invention can make the cleaning mechanism and the lubricating mechanism operate synchronously to realize linkage, that is, while cleaning, lubricating oil is sprayed on the machine shaft and two bearings synchronously to improve lubricity and reduce wear.

The invention provides a low-temperature flash-removing liquid and a preparation method thereof, and aims to solve the problem of removing flash generated after a semiconductor frame is packaged. The flash removal liquid is composed of an alkaline amine compound, an alcohol ether compound, a permeable surfactant, a thickener, a corrosion inhibitor, a chelating agent, a stabilizer and an environment-friendly solvated phosphate compound, and can effectively remove flash at a low temperature of 55-85 DEG C, significantly reduce energy consumption and reduce the influence on the environment. Compared with the prior art, the flash removing liquid has the advantages of low-temperature operation, environmental protection, high efficiency, safety, cost effectiveness and the like, is suitable for removing flash after semiconductor frame packaging, improves the production efficiency and reduces the operation risk. By optimizing the proportion of the components, the flash is effectively removed at a low temperature, damage to a plastic package body and a metal frame or a base body is avoided, and meanwhile, the problem of partial layers in a product is avoided. The invention also comprises a specific method for using the flash removing liquid, and the method comprises the following steps: soaking the semiconductor frame in the flash removing liquid, and then performing high-pressure flushing to remove the flash.

The present invention provides a puncture-proof aluminum shell profile for new energy blade batteries applied in the field of battery aluminum shell profiles. When the bottom of the aluminum shell body encounters a serious puncture, the pre-opening will crack in the designed direction, and the continuous invasion of the puncturing object will squeeze the adjacent flexible base, so that the punctured flexible base is separated and the remaining flexible bases on both sides are squeezed, on the one hand, the connecting hoses between the punctured flexible bases are fully opened without pressure, and on the other hand, the connecting hoses between the unpunctured flexible bases are closed under pressure, so that the separation capsules corresponding to the puncture site are connected to the air pressure bag separately, and the remaining separation capsules are closed. Under the overall upward movement of the battery box and the pressurization operation of the pressure supply bin, the arranged blade batteries are separated at the puncture site and moved closer to both sides, providing an open puncture path for the punctured object, thereby forming a blade battery structure that autonomously avoids the punctured object, providing safety protection for the blade battery under puncture conditions, having market prospects, and being suitable for promotion and application.

The utility model relates to the technical field of heat energy recovery of air energy heat pumps, in particular to a waste heat recovery device of a high-temperature air energy heat pump, which comprises a heat pump outer casing, the heat pump outer casing is fixedly mounted outdoors, a through hole is formed in the outer surface of the heat pump outer casing in a penetrating manner, and a heat exchange coil is arranged on the outer surface of a compressor in an inserting manner. According to the waste heat recovery device for the high-temperature air energy heat pump, heat generated during operation of the compressor can be absorbed and exchanged through the heat exchange coil, so that the heat released by the compressor can be transferred into the heating fins, and the water heating exchanger is heated again through the heating fins, so that the efficiency of heating the water heating exchanger by the condenser is improved; and the running temperature of the compressor can be reduced, stable running of the compressor is guaranteed, the stability of the air energy heat pump during running is guaranteed, the service life of the compressor can be prolonged, and waste heat generated during running of the compressor is recycled.

A PK post-treatment system comprises a crusher, a polymer dryer, an extruder and an underwater granulator, a feed port of the crusher is connected with a PK polymerization unit, a discharge port of the crusher supplies materials to the polymer dryer, the polymer dryer is connected with a negative pressure source, a discharge port of the polymer dryer supplies materials to the extruder through a powder cooler, and the underwater granulator is connected with the powder cooler. A mixing feed hopper is further arranged at the feed end of the extruder and connected with an anti-aging agent source, and a discharge port of the extruder supplies materials to the underwater granulator through a melt pump. The device is simple in structure and convenient to operate, and PK products with stable quality can be obtained.

This invention provides an axial flux motor, comprising: a first rotor; a second rotor; a stator located between the first rotor and the second rotor; and a first end cover disposed outside the first rotor. The first rotor includes a first rotor magnet and a first support plate in direct contact with the first rotor magnet. The surface of the first support plate is rough. The first end cover includes: a first oil passage including a first plurality of oil injection holes; and a first oil pipe connected to the first oil passage and an external oil pump. Cooling oil enters the first oil passage from the external oil pump via the first oil pipe and is sprayed from the first plurality of oil injection holes in the first oil passage onto the surface of the first support plate. Furthermore, this invention provides a method for cooling the axial flux motor. This invention effectively solves the heat dissipation problem of the axial flux motor, thereby significantly improving the heat dissipation efficiency of the axial flux motor, reducing the operating temperature of the axial flux motor, and extending the service life of the axial flux motor.

The utility model discloses a transformer oil tank structure with multiple heat exchange modes, and relates to the technical field of transformer cooling. The device structurally comprises a shell, a box cover, a plurality of U-shaped pipes, a buffer tank and a circulating pump, a heat exchange box body extending downwards is arranged in the center of the lower end of the shell; supporting channel steel is fixed to the lower end of the shell and located on the two sides of the heat exchange box respectively; the circulating pump is mounted on one supporting channel steel; an S-shaped coil pipe is fixed between the left wall and the right wall of the heat exchange box body in a penetrating mode. Geothermal cooling is carried out through the U-shaped pipes buried underground, heat exchange is carried out through the low temperature and stability of underground soil, the operation temperature of the transformer is effectively reduced, and the cooling efficiency is improved. The geothermal cooling mode does not need additional refrigeration equipment, only a circulating pump is needed to drive cooling liquid to circulate, and operation energy consumption is low. And the underground soil temperature is relatively stable and is slightly influenced by the external environment, so that the geothermal cooling effect is stable and reliable, and the transformer can normally operate under various environmental conditions.

An aerosol-generating device (100) is disclosed, and the aerosol-generating device comprises: a vacuum insulation (110) comprising an inner wall (112) and an outer wall (114), a vacuum (116) being enclosed between the inner wall and the outer wall; a cavity (106) in which an aerosol-forming 5 substance (12) may be received, the cavity being positioned adjacent to an inner wall of the vacuum insulation and having an opening (104) to enable a user to insert the aerosol-forming substance into the cavity; a heater (108) disposed in thermal contact with the inner wall, configured to heat an aerosol-forming substance received in the cavity by thermal conduction to generate an aerosol; and a thermal bridge (118) 10 disposed between the inner wall and the outer wall to allow a path for heat conduction, where the thermal bridge is positioned in a vacuum between a first end (120) of the vacuum insulation closest to the opening and the heater to enable heat to be transferred from the inner wall to the outer wall by conduction.

The utility model discloses a digital monitoring type UPS (Uninterrupted Power Supply), which comprises a main control module, a display module, a battery monitoring unit and an environment sensing assembly, the main control module is a core control unit, the display module is used for displaying operation parameters in real time, the battery monitoring unit collects data through a current and temperature sensor, and the environment sensing assembly monitors the external environment through a humidity and vibration detection element. The communication interface supports remote management, and the heat dissipation fins optimize the heat dissipation performance. According to the invention, comprehensive monitoring of the internal state and the external environment of the UPS can be realized, the reliability and the operation efficiency of equipment are improved, the maintenance cost is reduced, and the system is suitable for various power supply scenes.

A circulating water pump motor for dish-washing machine is convenient for heat dissipation, which comprises a stator core, front and rear machine covers clamped and fixed at two ends of the stator core, bearing holes are formed at central positions of the front and rear machine covers, front butt joints are connected with front end covers through a plurality of front connecting ribs, front heat dissipation holes are formed between adjacent two front connecting ribs, the rear machine cover comprises a rear butt joint and a rear end cover, a rear clamping seat is arranged at an end surface of the rear butt joint, a rear end surface of the stator core is clamped and installed in the rear clamping seat, the rear butt joint is connected with the rear end cover through a plurality of rear connecting ribs, rear heat dissipation holes are formed between adjacent two rear connecting ribs. The front and rear heat dissipation holes constitute direct and effective heat dissipation channels, air convection between the inside and outside of the motor is promoted, and the operating temperature of the motor as a whole, especially the stator core and other heating components, is significantly reduced.

The utility model belongs to the field of material conveying, and relates to a steel sleeve steel straight pipe section for pneumatic conveying of high-temperature materials. The straight pipe section is composed of an outer pipe, an inner pipe, a sealing filler base, a sealing filler gland, a gland bolt, a small-head sealing filler, an inner and outer pipe connecting plate, an inner and outer pipe connecting bolt, an inner and outer pipe connecting pad, a large-head sealing filler, a sealing filler pre-tightening spring, a heat insulation layer and a flange sealing assembly. The inner pipe is a reducer pipe, an inlet large end is in bolted connection with the outer pipe, and an outlet small end can be inserted into a connected pipe section large end. And a heat insulation layer is filled between the inner and outer pipes to reduce heat loss. Double sealing of the sealing filler is achieved through the pre-tightening spring and the gland bolt, and gas is prevented from entering. The design effectively solves the problems of thermal expansion and sealing of the pipeline in pneumatic conveying of high-temperature materials, and the conveying efficiency and safety are improved.

The invention discloses a waste wind power lubricating oil hydrogenation catalyst, a preparation method and its application in waste wind power lubricating oil regeneration base oil, belonging to the technical field of waste wind power lubricating oil regeneration. The catalyst is a shell-type Pd@γ‑Al 2 O 3 Catalyst. The use of the catalyst in the regeneration of base oil from waste wind power lubricating oil comprises: subjecting the waste wind power lubricating oil to a vacuum distillation and a low-temperature short-range critical molecular distillation in sequence to obtain a crude base oil; adding the crude base oil and the catalyst to a reactor for kettle-type hydrogenation and quality improvement to obtain a regenerated base oil. The present invention adopts a low-temperature short-range critical molecular distillation combined with kettle-type hydrogenation refining and quality improvement, which is simple to prepare and not easy to be poisoned. It can effectively reduce the coking and scaling problems of waste wind power lubricating oil on the inner wall of the evaporator, and can greatly extend the working time of the device. Shell-type Pd@γ‑Al 2 O 3 The catalyst can greatly reduce the amount of Pd used, improve the Pd dispersion and atomic utilization, and enhance the hydrogenation effect.

The application discloses an air electrode and application thereof, and belongs to the field of solid oxide batteries. The air electrode is formed by sintering an air electrode precursor in a CO2 atmosphere, and is a composite electrode of microparticles and nanoparticles. The size of the nanoparticles is 10-100 nm, the size of the microparticles is 0.5-2 microns, and the nanoparticles are uniformly dispersed on the surface of the microparticles. The composition of the air electrode precursor is Ba 1‑x N x Co 1‑m‑n Fe m M n O 3‑d , 0 < x < 0.5, 0 < n < 0.2, 0 < m < 0.3, 0 < d < 0.5, N is one or more than two of Sr, Mg, Ca, K and Na, and M is one or more than two of Sc, Zr, Nb, Ce, Y and Yb. The air electrode has excellent oxygen reduction and oxygen evolution reaction activity, and shows outstanding electrochemical performance in fuel cell power generation, hydrogen production by water vapor electrolysis and synthetic gas preparation by electrolysis.