14results about How to "Solve insulation problems" patented technology

A small-radius curve joint insulation device with guard rails comprises a spacer block lapped between two butt-joint steel rail interfaces, an insulation inner clamping plate is arranged between the spacer block and a steel rail, an insulation outer clamping plate opposite to the insulation inner clamping plate is arranged on the outer side of the steel rail, and a spacer piece is arranged between the butt-joint steel rail interfaces; the I-shaped section insulation is combined with the spacer block and the groove-shaped insulation, so that the problems of pulling deformation and insulation failure caused by uneven stress of double-section insulation are solved; the insulation assembly can be better attached to a track structure, stress is effectively dispersed, the impact resistance is improved, long-term stable operation is ensured, and the requirements of high-load and high-frequency train operation are met. According to the device, the mechanical strength of the insulation assembly is improved, the problems of deformation and aging caused by long-term use are reduced, the service life of equipment is prolonged, the stability and reliability of a track circuit are further improved, and safe and efficient operation of railway transportation is ensured.

The utility model belongs to the technical field of aftertreatment, and particularly relates to a heat insulation structure of a detachable V-shaped hoop for tail gas aftertreatment. The heat insulation structure comprises a first heat insulation cover and a second heat insulation cover, one ends of the first heat insulation cover and the second heat insulation cover are connected through a connecting shaft, and the other ends are movably connected through a support and a buckle. Heat insulation pasting cotton is pasted on the inner sides of the first heat insulation cover and the second heat insulation cover. The whole heat shield is of a metal ring structure, and the requirements for strength and attractiveness are met; a connecting shaft and a buckle are arranged, so that the V-shaped hoop is convenient to mount and dismount; the bolt avoiding cover is arranged and can be matched with a post-processed V-shaped hoop; cotton is attached to the inner layer, and the heat insulation performance is enhanced; the heat insulation problem of the V-shaped hoop of an existing post-treatment product can be solved, the advantages of being good in durability, attractive in appearance and the like are achieved, and meanwhile the cost and detachability of the hoop heat insulation cover can be considered.

This invention belongs to the field of semiconductor device fabrication technology and discloses a method for fabricating high-temperature, high-power-density SiC power semiconductor devices. The invention has low equipment requirements: due to the short sintering time, few sintering cycles, and all planar sintering, a common hot press and heating table can be used for sintering in air, eliminating the need for expensive nitrogen-filled pressurized silver sintering furnaces. The process is simple and fast: only two sintering cycles, two welding cycles, one bonding cycle, and one potting cycle are needed to complete the fabrication of a double-sided cooled 250°C high-temperature SiC power semiconductor device, including a heat dissipation base plate and insulating potting. A low-cost solution for 250°C high-temperature applications: expensive materials such as nano-silver are used only in some key locations. Utilizing thermal diffusion characteristics, high-temperature solder is used instead of nano-silver at the heat dissipation base plate-substrate welding interface where heat flow is fully diffused. This avoids the problems of high difficulty and high material cost associated with large-area silver sintering without significantly reducing heat dissipation performance.

This application relates to the field of cable protection pipe technology, and in particular to a low-temperature impact-resistant CPVC cable protection pipe, which includes a protection pipe body, an insulation layer, and a circulation mechanism. An impact-resistant mechanism is fixedly connected to the inner side of the protection pipe body. A cable body is inserted through the insulation pipe body inside the impact-resistant mechanism. A heat exchange mechanism is fixedly connected to the outer surface of the insulation pipe body. The circulation mechanism is located at the top of the protection pipe. This technical solution, through its heat exchange, circulation, impact resistance, and heat recovery structure, combined with a composite insulation layer and a suitable heat exchange medium, efficiently absorbs solar energy and recovers waste heat from the cable, continuously insulating the protection pipe body day and night, resisting external impacts, preventing low-temperature embrittlement and cable overheating, adapting to different low-temperature environments, reducing heat loss and energy consumption, and solving the problems of existing CPVC cable protection pipes such as poor resistance to low temperatures, weak impact resistance, and limited adaptability.

The invention discloses a glue-free conical high-voltage pulse transformer secondary coil and a preparation method thereof, and solves the technical problems that electromagnetic wires are easy to discharge due to the adoption of curing glue in the existing conical high-voltage pulse transformer secondary coil, and the operation stability of the secondary coil is poor. The secondary coil is only composed of the paper base cylinder and the coil winding layer, the structure is simpler, the winding process is more convenient, and uncertainty caused by human factors is reduced; the coil winding layer and the miniature spiral wire groove are mutually embedded, so that accurate arrangement, uniformity and stability of electromagnetic wires are realized, no gelling is realized, and the problems of non-uniformity of an electric field and a closed air gap possibly caused by introduction of resin glue and insulation possibly caused by introduction of the resin glue are avoided.

The utility model discloses a reinforced cable head, including the cable head, the plug no. 2 is fixedly connected in the cable head, the one end fixedly connected with the fixed plate of the cable head away from the plug no. 2, be provided with the fixed assembly in the fixed plate, be provided with the reinforcing dustproof subassembly on the cable head, the one end of cable head away from reinforcing dustproof subassembly is provided with quick -wiring assembly, and the fixed assembly includes a plurality of fixed boxes of screw thread connection on the fixed plate, the fixed column fixedly connected in the fixed box. The utility model through the arc plate of spring drive is adapt to the clamping cable, and the sealing package of heat shrink sleeve is combined, effectively solve the contact resistance rise and insulation ageing problem that traditional crimping / welding caused because of contact loose or sealing failure, the threaded locking design of plug no. 1 and fixed ring realizes the quick plugging of cable head and equipment, solves the problem of traditional crimping or welding operation complicated, low efficiency, promotes the speed of field maintenance.

The invention provides a thermal insulation intermediate material for building interior and exterior walls and a preparation method thereof. The silicon-based composite material is prepared by synthesizing a silicon-based material and an inorganic material and is in a regular porous shape. The intermediate material has the advantages of high temperature resistance (more than 1000 DEG C), light weight (160 Kg / m < 3 >), heat conductivity coefficient of 0.027-0.038 w / mk, good heat insulation performance and fireproof performance, excellent film-forming property, easiness in blade coating and convenience in construction, and is widely applied to heat insulation scenes of inner and outer walls of buildings.

This invention belongs to the field of alloy material preparation, specifically relating to a lightweight, high-strength TiAlNbB multi-principal element alloy plate and its preparation method. Using a common metallurgical TiAlNbB multi-principal element alloy ingot as the billet, this invention prepares large-size TiAlNbB multi-principal element alloy plates with DP microstructure through hot isostatic pressing and direct cladding hot rolling. Then, a short-time electric pulse heat treatment process is used to prepare large-size TiAlNbB multi-principal element alloy plates with a uniform and fine NF structure.

The invention belongs to the technical field of superconducting, and relates to an insulation enhanced superconducting cable and a preparation method thereof. The method comprises the following steps: firstly, reinforcing a superconducting wire rod through a NiCoCr / Cu composite matrix, and carrying out multi-channel coating and on-line monitoring by adopting BN modified polyimide paint to form a uniform insulating layer; and then wrapping and hot pressing are carried out by using a B-stage epoxy-impregnated aromatic polyamide tape to construct an insulation enhanced structure. Stranded cable forming is carried out through tension control and a numerical control positioning die, and the composite cable is formed by combining the core wire and the multiple layers of insulation reinforced wires. Finally, through secondary wrapping and pretension braiding protection, the superconducting cable with the coverage area larger than or equal to 99.9% and the void ratio smaller than 1% is obtained, the withstand voltage between strands is larger than 5000V, the withstand voltage between cables is larger than 7000V, the mechanical stability and the thermal management performance are remarkably improved, and the superconducting cable is suitable for being applied to high-field magnets and fast pulses.

The application discloses a self-adaptive air-filled inner heat preservation system for a greenhouse, which comprises a support fixing device fixed to the greenhouse, an air-tight heat preservation film body comprising an upper film and a lower film, and an edge sealing reinforcing structure arranged at the periphery of the air-tight heat preservation film body, and a gas pressure regulating device connected to the air-tight cavity. The application relates to the technical field of facility agriculture and animal husbandry environment engineering, and realizes dynamic adaptation of heat preservation performance and light transmission performance through double-mode gas pressure regulation. In a heat preservation period, the air-filled pressure is maintained, the excellent heat insulation performance of the static air layer is utilized to realize super-high air-tight heat preservation, and heat loss is effectively reduced. When solar radiation heat is needed to be obtained, the air cavity pressure is reduced, the film body is adhered to reduce the thickness of the air layer, and the light transmission rate is improved, so that the inherent contradiction that heat preservation and light collection cannot be simultaneously realized in traditional heat preservation facilities is solved.

The application provides a relay with high-low voltage insulation structure, and relates to the technical field of relays.The relay comprises a high-voltage system, a low-voltage system and a fixed foot.The high-voltage system comprises an upper armature and an insulation frame, and the upper armature and the insulation frame are fixedly arranged.The low-voltage system comprises a magnetic pole plate.The fixed foot is fixedly connected with the insulation frame and the magnetic pole plate respectively, and the fixed foot is made of metal material.The relay with high-low voltage insulation structure provided by the application fixes the upper armature by using the insulation frame, realizes the insulation arrangement between the upper armature and the magnetic pole plate by using the insulation frame, and realizes the insulation isolation between the high-voltage system and the low-voltage system, thereby solving the insulation problem between the high-voltage system and the low-voltage system.The insulation frame is fixedly connected with the magnetic pole plate through the fixed foot made of metal material, the fixed foot made of metal material can realize higher connection strength with the magnetic pole plate, thereby ensuring the connection effect between the insulation frame and the magnetic pole plate and ensuring the connection firmness of the insulation frame and the upper armature during the use of the relay.

The utility model relates to the technical field of molten salt pumps, and discloses a small-flow high-temperature molten salt pump which comprises a pump body, a pump shaft is connected in the pump body in a sliding mode, a partition assembly is arranged on the outer wall of the pump shaft and comprises a first hollow ring and a second hollow ring, and the first hollow ring and the second hollow ring are both connected to the outer wall of the pump shaft in a sliding mode. The first hollow ring and the second hollow ring are both filled with heat conduction oil, one side of the first hollow ring is fixedly connected with a connecting block, one side of the connecting block is fixedly connected with a liquid storage bin, and the side wall of the first hollow ring and the side wall of the second hollow ring are provided with disassembling and assembling assemblies which are in bilateral symmetry. According to the utility model, heat conduction oil is firstly poured into the hollow ring I and the hollow ring II by an operator, and the heat conduction oil is circulated through the output end and the input end of the circulating pump, so that the effect of isolating heat transfer is achieved, the problems of insulation aging and lubrication failure caused by overheating of the motor are solved, and the operation stability of equipment is improved.

This invention provides a power supply system for energy-transfer insulators based on magnetic coupling. The system includes: a high-current generator, an energy-harvesting transformer, a high-frequency power conversion device, a magnetic coupler, and an AC power supply. The high-current generator generates a high current simulating the operating conditions of a transmission line. The energy-harvesting transformer, connected in series with the high-current generator, senses the electrical energy available for use by the high-frequency power conversion device from the high current. The high-frequency power conversion device, connected to the output terminal of the energy-harvesting transformer, converts the electrical energy into high-frequency AC power. The magnetic coupler, connected to the output terminal of the high-frequency power conversion device, transmits the high-frequency AC power to the input terminal of the energy-transfer insulator. The AC power supply, connected to the high-voltage terminal of the energy-transfer insulator, provides a high-frequency power voltage to the energy-transfer insulator. This invention solves the insulation problem between the energy-harvesting transformer and the high-voltage terminal of the tested energy-transfer insulator, ensuring safety during the testing process.

This invention provides an ultra-high temperature insulation device and a long-life operation method for a solid waste-based high-temperature thermal storage system. The device comprises, from the inside out: a core rod, a thermal storage insulation layer, a gradient insulation layer, a solid isolation layer, and a shell. The core rod has a vacuum suction port inside and spiral fins on its outside. The gradient insulation layer has gradient-distributed insulation properties, and the thermal storage insulation layer comprises a high thermal conductivity ceramic fiber reinforced composite material. Through the solid waste-based gradient insulation layer design and a thermal-electric synergistic management mechanism, the insulation performance and thermal breakdown problems of the high-temperature thermal storage device under extreme operating conditions are solved, achieving long-life operation of the device.