16results about How to "Improve temperature rise" patented technology

The invention relates to the technical field of fluid medium transmission, and provides a cooling conveying pipeline system and a two-stage Roots blower countercurrent cooling method. The cooling conveying pipeline system comprises a monitoring and adjusting assembly. The monitoring and adjusting assembly comprises a shell, an adjusting assembly rotationally installed on the shell, a rotating piece installed on the adjusting assembly and a monitoring piece installed on the shell. The adjusting assembly comprises a driving part which is rotatably mounted on the cover plate and can be pressed to move relative to the cover plate, a rotating seat which is rotatably mounted between the cover plate and the shell, and a first adjusting part which is rotatably supported at one end of the rotating seat and can be rotated by the driving part; the second adjusting part is arranged opposite to the first adjusting part, is rotatably supported at the other end of the rotating seat and can be rotated by the driving part; the moving part is movably jointed in the rotating seat and can be partially jointed in the first adjusting part; the rotating shaft is arranged in the rotating seat and is partially jointed in the moving part; and the elastic part is arranged between the moving part and the rotating shaft.

The utility model belongs to the technical field of low-voltage electric appliances, and discloses an installation bus and a circuit breaker. The installation bus specifically comprises a lap joint part, a heat dissipation part and an installation part. The heat dissipation part is arranged on the lap joint part in a protruding mode, and heat dissipation holes are formed in the heat dissipation part in the extending direction of the heat dissipation part. And the mounting part is arranged at one end, far away from the lap joint part, of the heat dissipation part and is used for being in bridge contact insertion connection with the circuit breaker. The circuit breaker comprises a bridge, a butt joint bus and an installation bus, wherein one end, far away from the installation bus, of the bridge contact is in plug-in connection with the butt joint bus. According to the utility model, the temperature rise of the conductive system of the circuit breaker can be improved and the temperature resistance of the circuit breaker can be enhanced without being limited by the installation space.

The invention relates to the field of magnetron sputtering devices, in particular to a clamping device for magnetron sputtering coating, which comprises a clamping seat, the center of the upper surface of the clamping seat is provided with a coating groove for placing a sample, and the clamping seat is provided with permanent magnet areas positioned on two sides of the coating groove. A plurality of first permanent magnets with N poles facing the upper surface of the clamping base are arranged in one permanent magnet area, and a plurality of first permanent magnets with S poles facing the upper surface of the clamping base are arranged in the other permanent magnet area. The two permanent magnets I with opposite polarities in the permanent magnet regions on the two sides of the clamping seat form an arched magnetic field line from N pole to S pole above the coating groove; after the sample is installed, electrons emitted into the film coating groove in all directions can be deflected under the action of the magnetic field lines and cannot be directly emitted into the film coating groove, so that the temperature rise of the clamping seat is reduced, and the film coating quality of the sample is ensured.

The invention discloses a superconducting disc motor, wherein the stator comprises a stator shell and a stator core; the rotor comprises a rotor shaft; the stator core comprises a wedge-shaped core body formed by stacking oriented silicon steel; a superconducting coil is wound between the two ends of the wedge-shaped core body; a plurality of stator cores are distributed and rotated about an axis parallel to the direction of the magnetic field thereof and arranged in a disc shape; the stator cores arranged in a disc shape are coaxially embedded in the stator shell; a rotor back iron shell is coaxially sleeved on the hollow rotor shaft, and a copper heat-conducting component is included in the hollow rotor back iron shell; the copper heat-conducting component comprises a columnar end parallel to the rotor axis, and the columnar end is arranged in a circular ring along the rotor rotation direction; a superconducting coil is wound on the columnar end extending from the rotor back iron shell to the outside of the rotor back iron shell; the outer shell comprises a cooling gas / liquid circuit, and the cooling circuit cools the hollow cavity in the potted stator; a cooling gas / liquid circuit is included in the rotor back iron shell, and the rotor shaft is a hollow shaft.

The application discloses a preparation method of a polyurea photo-thermal anti-icing coating and belongs to the technical field of photo-thermal anti-icing. The application is based on silica / polyurea composite particles and carbon materials, and super-hydrophobicity and relatively high photo-thermal conversion efficiency are obtained. The method is characterized in that silica nanoparticles are combined into polyurea molecules to form silica / polyurea composite particles; then the composite particles are combined with graphite microparticles and uniformly dispersed in polysiloxane, and a super-hydrophobic photo-thermal coating with excellent wear resistance and durability is developed. The coating surface has high photo-thermal conversion efficiency, can obviously increase temperature under the irradiation of sunlight, can delay the icing time and reduce the ice adhesion strength, and thus better anti-icing and de-icing effects are achieved.

The invention provides an infiltration-like silver-based electric contact material and a preparation method thereof, and the preparation method comprises the steps: mixing and grinding Ag powder, reinforced phase Me powder and additive powder to obtain AgMe composite powder containing an additive; the AgMe composite powder is subjected to glue mixing and granulation; the granulated AgMe composite powder is subjected to double-layer pressing forming, the lower layer structure is an AgMe (half) layer, the upper layer structure is an Ag layer, and an AgMe (half) / Ag composite blank is obtained; degumming the AgMe (semi) / Ag composite green body to obtain an AgMe (semi) / Ag composite framework; and the AgMe (semi) / Ag composite framework is subjected to high-temperature infiltration, and an AgMe (final) electric contact composite material, namely the infiltration-like silver-based electric contact material, is obtained. The method has the characteristics of high efficiency and low cost, the density and yield of batch product materials can be improved, the arc ablation resistance of products is improved, and the temperature rise of electrical products is improved.

The invention provides a Flyback-based inverter circuit and a control method thereof, a switching power supply and a photovoltaic system, and relates to the technical field of electronics. A secondary winding of a transformer comprises a first secondary winding and a second secondary winding; the second end of the first secondary winding and the first end of the second secondary winding are connected to a first node, the first end of the first secondary winding is connected with the first end of the first switching tube set, and the second end of the second secondary winding is connected with the first end of the second switching tube set. The second end of the first switch tube group and the second end of the second switch tube group are connected to a second node, and the first end of the first secondary winding and the first end of the second secondary winding are dotted terminals. And each secondary winding is controlled through a corresponding switching tube group, so that cut-off in an energy storage stage of the transformer is realized, and the two secondary windings respectively work in a positive half cycle and a negative half cycle in an energy release stage of the transformer to output alternating current. Therefore, power devices are reduced, loss is reduced, and temperature rise of the whole machine is improved.

This invention relates to the field of motor design and manufacturing technology, and provides a motor structure that solves the problems of poor heat dissipation and easy local overheating in the end windings. The motor structure includes a stator core and windings. The windings include a winding slot portion assembled within a stator core slot and a winding end portion extending beyond the end face of the stator core. The cross-sectional width W of the winding end portion is... end The cross-sectional width W of the portion inside the winding slot is greater than the width of the winding slot. slot And W end >W end,min W end,min This refers to the minimum cross-sectional width of the end winding, determined based on the target temperature difference constraint between the end winding and the slot winding. This invention achieves axial temperature uniformity of the winding without adding a cooling system, eliminating localized hot spots and improving power density and insulation life.

The invention discloses a rotor superconducting structure, wherein a rotor back iron shell is coaxially sleeved on a hollow rotor shaft, and a copper heat-conducting component is included in the rotor back iron shell; the rotor back iron shell includes a hollow shell in the shape of a disk, and an end plate sealably assembled at the rear end of the hollow shell; both the hollow shell and the end plate include an axial hole for sealably assembling the rotor shaft; the copper heat-conducting component includes a columnar end parallel to the rotor axis, the columnar ends are arranged in a circular ring distribution along the rotor rotation direction; and an annular bottom located at the root of the columnar end for connecting multiple columnar ends in series; a through hole for matching the columnar end is included on the front end surface of the hollow shell; a superconducting coil is wound on the columnar end extending out of the hollow shell; and a distributed cooling gas / liquid circuit is included in the cavity formed in the rotor back iron shell. The temperature rise of the rotor part can be improved, and the demagnetization of the permanent magnet caused by excessively high rotor temperature can be avoided.

The invention relates to an electric power connector which comprises an insulation body and two electric power terminals, the insulation body is provided with a butt joint groove penetrating forwards, and the two electric power terminals are located on the two transverse sides of the butt joint groove respectively. Each power terminal comprises a first terminal piece and a second terminal piece, the second terminal piece is attached to the transverse outer side of the first terminal piece, and the first terminal piece comprises a first base part, a plurality of first elastic arms extending forwards from the first base part and first contact parts bent in an arc shape from the tail ends of the first elastic arms; the second terminal piece comprises a second base part, a plurality of second elastic arms extending forwards from the second base part and second contact parts bent in an arc shape from the tail ends of the second elastic arms, the second contact parts are provided with openings, and the first contact parts partially extend into the openings. The first contact part located on the inner side is contained in the opening of the second contact part located on the outer side, so that the lateral sizes of the first elastic arm and the second elastic arm are as large as possible, current passing is increased, and the temperature rise problem is solved.

The invention relates to the technical field of motor remanufacturing detection, in particular to a motor remanufacturing detection device which comprises a motor detection machine body, a control box is fixedly installed at the upper end of the motor detection machine body, and the motor detection machine body is provided with a motor shell assembly. The motor shell assembly comprises a pushing rail fixedly installed at the upper end of the motor detection machine body, a conveying base is slidably installed on the upper surface of the pushing rail, a support base is slidably arranged at the upper end of the conveying base, a stator shell is installed at the upper end of the support base, and multiple pieces of fine magnetic steel are annularly installed on the inner wall of the stator shell. One side of the motor detection machine body is movably provided with a fan blade adaptive assembly, so that when the diameter of a bearing, the outer diameter of a fan and the diameter of a rotor are tested during motor remanufacturing detection, a single person can automatically replace experimental parts, the detection precision is high, parts of different models can be conveniently debugged for detection, and the detection efficiency is improved. And the overall remanufactured motor detection efficiency and quality are ensured.

The application provides a composite medium high-temperature heat pump circulation system and method. The composite medium high-temperature heat pump circulation system comprises: a regenerator connected with a separator; a primary compressor connected with a first outlet of the regenerator and used for preliminarily compressing a nitrogen-poor gas-phase working medium; an ejector, an injection inlet of which is connected with an outlet of the primary compressor, and a material inlet of the ejector is connected with a second outlet of the regenerator; a secondary compressor connected with an outlet of the ejector; and a condenser connected with an outlet of the secondary compressor and used for heat exchange, wherein high-temperature hot water or steam generated through heat exchange is directly delivered to a next device; and supercritical fluid discharged from the condenser is returned to the regenerator for heat exchange and then reenters the separator. By introducing appropriate nitrogen into carbon dioxide as an auxiliary component, the temperature rise amplitude of the mixed working medium in the compression process can be effectively improved.

The utility model relates to motor technical field especially a kind of shaftless permanent-magnet motor rotor support.The utility model discloses a rotor brake disc for cooperating with brake device, the side of rotor brake disc is fixed with cylindrical adapter section, the end surface of adapter section is fixed with first ring plate, there is second ring plate between first ring plate and rotor brake disc, the outer diameter of first ring plate and second ring plate is same, and the outer end surface of first ring plate and second ring plate is welded with magnetic pole mounting ring, and magnetic pole mounting ring is used to install magnetic pole.The shaftless permanent-magnet motor rotor support is connected with the cooperation of brake rotor by rotor brake disc, its structure design includes cylindrical adapter section for transmitting torque and supporting rotor assembly, first ring plate and second ring plate jointly constitute double-layer annular support structure to enhance overall stiffness, and through the design of same outer diameter, ensure that stress is uniform.

The invention discloses a hybrid superconducting disc motor with a superconducting rotor. The stator comprises a stator support and a stator core; the rotor comprises a rotor shaft and a back iron shell; the rotor back iron shell is coaxially sleeved on the hollow rotor shaft, and the rotor back iron shell comprises a copper heat-conducting component; the rotor back iron shell comprises a hollow shell and an end plate; the hollow shell and the end plate both comprise an axial hole for sealing and assembling the rotor shaft; the copper heat-conducting component comprises a columnar end, which is arranged in a circular ring distribution along the rotation direction of the rotor; an annular bottom located at the root of the columnar end and used for connecting a plurality of columnar ends in series; a through hole for matching the columnar end is comprised on the front end surface of the hollow shell; a superconducting coil is wound on the columnar end extending out of the hollow shell; a distributed cooling gas / liquid circuit is comprised in the cavity formed in the rotor back iron shell; the stator core comprises a wedge-shaped iron core body formed by stacking silicon steel layers; a copper wire coil is wound between the two ends of the wedge-shaped iron core body as a winding.

The invention relates to the technical field of heat exchange, in particular to an air source heat pump heat exchange system which comprises a heat exchange tank, a heat exchange cylinder is fixedly connected to the inner side of the heat exchange tank, and the space between the heat exchange tank and the heat exchange cylinder is filled with a heat preservation material.The air source heat pump heat exchange system can be flexibly adjusted according to the use condition of the air source heat pump heat exchange system; floor heating water can rapidly pass through the pipe array in the longitudinal direction in a mild climate or a scene requiring rapid temperature rise of a user and in a longitudinal short-circuit flow channel mode, the retention time is greatly shortened, the flow resistance is reduced, and the floor heating water can circuitously flow in the heat exchange cylinder in a severe cold working condition or a scene requiring large temperature difference and in a snakelike long-path flow channel mode, so that the heat exchange efficiency is improved. The residence time is remarkably prolonged, low-temperature return water and a high-temperature refrigerant are in full contact for heat exchange, the heat exchange area can be utilized to the maximum extent, the temperature rise amplitude of a single cycle is improved, the load of a heat pump compressor is reduced, high-energy-efficiency stable operation is achieved, and rapid heat supply and flexible adjustment are achieved.

This application relates to a high-frequency relay, including an electromagnetic part comprising multiple metal components; a contact portion disposed on one side of the electromagnetic part along a first direction, the contact portion including a moving spring assembly and a stationary spring; a shielding cover disposed on the side of the stationary spring facing the electromagnetic part; at least a portion of the stationary spring is located inside the shielding cover, and at least a portion of the moving spring assembly passes through the shielding cover; wherein the shielding cover has a grounding terminal; one end of a conductive connector is electrically connected to at least one of the multiple metal components, and the other end is electrically connected to the shielding cover and grounded. By providing a conductive connector connecting the metal components of the electromagnetic part and the shielding cover, a grounding path is provided for the metal components in the electromagnetic part, thereby eliminating parasitic coupling and secondary radiation effects caused by the proximity of the metal components in the electromagnetic part to the high-frequency operating contact portion, thus reducing crosstalk and interference coupling of the electromagnetic part to the high-frequency signal of the contact portion, and ensuring the integrity and transmission efficiency of the high-frequency signal.