38results about How to "Prevent creepage" patented technology

The invention relates to an electrostatic dust removing device for high-temperature coal gas. The electrostatic dust removing device comprises a shell, dust hoppers, electrode wires, dust collecting electrode plates, insulators, a hot gas purging mechanism and a high-pressure power supply, wherein the shell is provided with a gas inlet and a gas outlet, the dust hoppers are arranged under the shell, the electrode wires and the dust collecting electrode plates are arranged in the shell, the insulators are used for insulating the electrode wires and the shell, the hot gas purging mechanism is used for purging the insulators, and the high-pressure power supply is connected with the electrode wires; and each insulator is shaped like a hollow cylinder, the hollow structure of each insulator faces the interior of the shell, a column used for penetrating through the corresponding electrode wire is arranged on the inner side of the bottom of each insulator, and a ventilation structure is arranged on the side wall of each insulator. According to the electrostatic dust removing device for the high-temperature coal gas, tar oil and dust particles which are adhered to the insulators can be effectively reduced, and insulator creepage can be avoided.

The invention provides a cable outer sheath thermal shrinkage patching method. Specifically, a graphitic layer on the damaged part of a cable outer sheath is scraped off and smoothened through a glass sheet, the section with the damaged part of a cable is wound and sealed through an insulating belt, the insulating belt is wrapped by a protection cover, and thermal shrinkage processing is carried out on the protection cover. According to the technical scheme, damage and water and humidity entering of the cable thermal protection cover can be effectively prevented, and the operation safety of the cable is improved.

The invention discloses a barrel-type composite insulating material insulation performance testing device, which includes a constant temperature box and an electrode system. The constant temperature box is provided with a heating tube and a temperature sensor. The electrode system includes a high-voltage copper rod electrode and a ground electrode; the high-voltage copper rod electrode is a cylinder. The body copper electrode is located inside the barrel-type composite insulating material. The cylindrical copper electrode is two semi-cylindrical copper electrodes cut along the diameter; the upper surface of the cylindrical copper electrode is tapped into the upper copper rod, and the lower surface is tapped Screw in the lower copper rod; the ground electrode is close to the outer wall of the barrel-type composite insulation material; the upper copper rod is connected to the high-voltage terminal to the partial discharge detector or voltage measuring instrument, and the ground electrode is connected to the low-voltage terminal; the partial discharge detector or voltage measuring instrument will collect The received voltage data is sent to the computer. The invention can ensure that the electrode and the insulating material are tightly bonded, and prevent air gap discharge caused by gaps between the electrode and the insulating material and creepage of the insulating material along the radial direction.

The invention discloses a barrel type composite insulating material insulating property detection device which comprises a constant temperature box and an electrode system. A heating pipe and a temperature sensor are arranged in the constant temperature box. The electrode system includes high-voltage copper bar electrodes and a ground electrode; the high-voltage copper bar electrodes are cylindrical copper electrodes and are arranged inside a barrel type composite insulating material; the cylindrical copper electrodes are two semi-cylindrical copper electrodes formed by cutting along the diameter; upper cooper bars are screwed into the circle centers of the upper surfaces of the cylindrical copper electrodes through tapping; and lower copper bars are screwed into the circle centers of thelower surfaces through tapping. The ground electrode is in close contact with the outer wall of the barrel type composite insulating material. The upper cooper bars are connected with a high-voltage terminal and connected with a partial discharge detector or a voltage measuring instrument; and the ground electrode is connected with a low-voltage terminal. The partial discharge detector or the voltage measuring instrument sends the acquired voltage data to a computer. Therefore, the tight fitting of the electrode and the insulating material can be ensured; and the air gap discharge caused by agap between the electrode and the insulating material and creepage of the insulating material in the radial direction are prevented.

The invention discloses a compact high-voltage wiring terminal and a high-frequency transformer. The wiring terminal comprises an insulator satisfying a preset creepage distance. A first high-voltageconducting rod and a second high-voltage conducting rod are arranged in the insulator in parallel; the top ends of the first high-voltage conducting rod and the second high-voltage conducting rod extend out of the top surface of the insulator; the bottom ends of the conducting rods extend out of the bottom surface of the insulator; an upper insulating baffle plate is arranged between the top endsof the first high-voltage conducting rod and the second high-voltage conducting rod in the top surface of the insulator; a lower insulating baffle is arranged between the bottom ends of the first high-voltage conducting rod and the second high-voltage conducting rod on the bottom surface of the insulator; and the sizes of the upper insulating baffle and the lower insulating baffle both meet the creepage distance between the first high-voltage conducting rod and the second high-voltage conducting rod. According to the compact high-voltage wiring terminal, connection and safety protection of double paths of high-voltage incoming and outgoing lines in one terminal can be realized, and miniaturization and light weight of products with high-voltage interconnection requirements of cascaded high-capacity high-frequency high-voltage transformers are facilitated.

The invention belongs to the technical field of medical instruments, and particularly relates to an external pulse generator of a neural regulation and control body. The external pulse generator comprises a front shell, a rear shell, an end cover, a battery cover, a wire interface end plug and a PCB. The front shell, the rear shell and the end cover are used for supporting the PCB in the shell. The PCB comprises a first PCB and a second PCB. The first PCB and the second PCB are connected through a board-to-board connector. The first PCB is fixed in the front shell, and the second PCB is fixedin the rear shell. The first PCB and the second PCB are connected with the board-to-board connector through an FPC. The wire interface end plug is installed on the second PCB. According to the invention, a display port interface can be used at the connecting end of a wire based on an optimized installation structure, so that the advantages of high interchangeability and low cost are realized. A metal frame is not prone to strain and aging. In addition, the bandwidth provided by the display port can be up to 10. 8Gb / s. The upgrading of future products is facilitated.

The invention provides a stator coil straight line side measuring and line drawing device and method. The device comprises a supporting rod and a reference block, wherein the reference block is provided with an angle R; the extending face of the angle R is provided with a through hole and a check block; the supporting rod penetrates through the through hole of the reference block; the reference block is provided with a fastening screw; and the fastening screw penetrates into the through hole from one face of the reference block. The angle R of the reference block is determined according to the size required by a stator coil, and the reference block can freely slide on the supporting rod to adjust the length of the straight line edge, so that the straight line edge of each product can be drawn and measured by using the device, and the accuracy is high.

The invention provides a cable outer sheath thermal shrinkage patching method. Specifically, a graphitic layer on the damaged part of a cable outer sheath is scraped off and smoothened through a glass sheet, the section with the damaged part of a cable is wound and sealed through an insulating belt, the insulating belt is wrapped by a protection cover, and thermal shrinkage processing is carried out on the protection cover. According to the technical scheme, damage and water and humidity entering of the cable thermal protection cover can be effectively prevented, and the operation safety of the cable is improved.

The invention particularly relates to a high-current terminal. The terminal comprises a terminal body, wherein the terminal body is provided with a mounting cavity, the mounting cavity is communicatedwith the top surface and the front surface of the terminal body, a nut fixing groove and a copper sheet are arranged in the mounting cavity, one end of the copper sheet is arranged in the mounting cavity, the other end of the copper sheet penetrates through the inner wall of the mounting cavity and extends to the back surface of the terminal body, the copper sheet is provided with a bolt, a nut is arranged in the nut fixing groove, and one end of the bolt penetrates through the copper sheet to be connected to the nut. The advantages of the high-current terminal are that the structure is communicated with the top surface and the front surface of the terminal body through the mounting cavity, thereby enabling the cable connection not to be limited by the terminal structure; besides, the other end of the copper sheet penetrates through the inner wall of the mounting cavity and extends to the back surface of the terminal body, and the cable can be connected to the copper sheet in a multi-angle adjustment manner, so that the terminal body is prevented from being partially exceeding, and the implementation cost is reduced; in addition, the structure adopts isolation plate grooves to prevent the problems of creepage and short insulation distance.

The invention relates to the technical field of a flexible circuit board, in particular to a high-voltage flexible circuit board. The high-voltage flexible circuit board comprises an insulation base layer, wherein a first copper foil circuit layer is arranged at one side of the insulation base layer, a second copper foil circuit layer, a first PET film layer and a third copper foil circuit layer are sequentially arranged at the other side of the insulation base layer, a first through hole is formed between the first copper foil circuit layer and the insulation base layer to achieve the conduction between the first copper foil circuit layer and the second copper foil circuit layer, and a second through hole is formed among the first copper foil circuit layer, the insulation base layer, the second copper foil circuit layer and the first PET film layer to achieve the conduction between the first copper foil circuit layer and the third copper foil circuit layer. A positive electrode and a negative electrode of a traditional multi-layer circuit board are arranged at the same layer, and the widths of a positive electrode copper foil and a negative electrode copper foil are affected due to limitation of creeping distance; and the electrodes of the multi-layer circuit board are arranged at several layers, creepage between the electrodes can be prevented, the width of the circuit board is reduced to the greatest extend on the condition that the voltage drop is consistent with that of a dual-layer circuit board, and a higher cooling effect also can be achieved.

The invention belongs to the field of high-voltage static electricity, and discloses a discharge system for electrostatic voltage adjustment of high-voltage electrostatic equipment. The discharge system comprises a laser (JGQ), a control module, an electrostatic field sensor (CGQ), an electromagnet (DCT), a first electrode (JD1) and a second electrode (JD2). Laser is used as an electrical switch to achieve a controllable conduction function of a high-voltage electrostatic path, and Lorentz force is used to cut off an electrical path of an ionization curve to achieve a controllable disconnection function of the high-voltage electrostatic path. The system has the advantages of being long in service life, higher in reliability and easy to produce, and a new technical thought is provided.

The invention is suitable for the technical field of transformers, and provides a fast-assembly fusion tube type voltage transformer used in a harsh environment. The transformer comprises a three-phase voltage transformer; the top of the three-phase voltage transformer is provided with a fusion tube; a silica gel cap is arranged on one side of the fusion tube, and the fusion tube is detachably connected with the silica gel cap; a shielding net is arranged in the fusion tube, and the shielding net is connected with the fusion tube. Through the arrangement of the fusion tube and the silica gel cap, a user can disassemble the silica gel cap to disassemble and assemble a fuse in the fusion tube; through insulation and sealing of the silicone grease and sealing of the silica gel cap, ionization leakage is effectively prevented, creepage is prevented, the device can be used in areas with high pollution grade and severe salt mist, the difference of different use environments in domestic areas is solved, and the device can be used as a general product.

The invention discloses a vacuum circuit breaker for high-cold area based on boosting reaction, its structure includes circuit breaker main body, Circuit break mounting bracket, Insulator, open / closedrive lever, knife separator, isolation knife, As that vacuum circuit break is provided with a knife separate device, When the worker needs to overhaul the circuit breaker and switch it on or off, Asthat heat generate by the compressed air of the thermally pressurize structure causes the frozen water vapor to undergo liquefaction reaction, At this time, that work personnel can easily separate theknife of the circuit breaker from the contact part at the top of the insulator, the force of the switch is not pry open by other tools, the working efficiency is improved, the wear of the knife jointcaused by the pry tool is avoided, and the service life of the circuit breaker is prolonged, so that the contact part of the circuit breaker and the contact part at the top of the insulator are separated.

The invention relates to a rotary road assembly of a generalization slip-ring rotor. The rotary road assembly comprises an insulating ring and a metal ring, wherein the insulating ring is of an integral structure formed by a circular flange and an annular boss; an excircle of the annular boss is matched with an incircle of the metal ring; and thread holes penetrating through the insulating ring are respectively and uniformly arranged in an upper surface of the annular boss along the periphery. An insulating shaft in the prior art is removed, and the functions of insulation and positioning of the insulating shaft are realized by adopting the insulating ring with a special structure to overlap, so that the manufacturing procedure for processing the insulation shaft is removed; only fit precision between the rotary road assembly assembled by the insulating ring and the metal ring and a central spindle needs to be ensured, so that the fit precision is also improved; the thread holes are processed in the insulating ring, so that cable conductors of different types can be distributed into the different thread holes, and the insulation between the cable conductors of different types is ensured; and a fan-shaped hole is processed in the insulating ring, and an inner wall of the metal ring is exposed, so that a cable can be conveniently welded on the inner wall of the metal ring.

This invention relates to one oil dipped reversed current mutual-inductor, which comprises one conductor bar, shell, second coil set, cover tube, expansion device and oil valve, wherein, the conductor bar passes the inner shield; the second coil set stretches outside shell to form the device; the shell, cover tube, base socket form sealed part full of isolation oil; inner shield, second wire tubeare covered with total isolation materials; the total isolation materials covering the inner shield and secondary wire for isolation.

The invention discloses a hydro-generator three-phase high-capacity alternating-current collecting ring device. According to the device, a shunt ring is adopted to reduce heating when currents flow through the collecting ring device, collecting rings of the special cooling structure are adopted to enhance cooling, the collecting rings are prevented from overheating to cause accidents, and the device is very suitable for being used on a variable-speed hydro-generator. The device comprises the collecting rings, hollow conductive rods, the shunt ring, a fixing nut, a shaft insulating ring and the like, wherein the collecting rings are arranged on a top shaft of the generator. The device is composed of the three collecting rings so that a three-phase alternating current power supply can be connected conveniently, and each collecting ring is provided with two hollow conductive rods which penetrate through the top shaft of the generator and are connected with an excitation copper bar of an inner cavity. The three sets of hollow conductive rods are arranged on three different axial sections in the top shaft respectively, and are evenly distributed according to circumferential 120 degrees, installation space in the top shaft is enlarged, vibration caused by asymmetric weight in a rotating process of a unit is also eliminated, and operation stability is improved.

The embodiment of the present application discloses an insulating and heat-conducting device applied to high-voltage optical communication equipment, including: a bracket, a cover plate, a plurality of connecting posts, and at least one ceramic insulating tank for installing power devices. One ends of the plurality of connecting columns are jointly fixed on the cover plate, and the other ends are jointly fixed on the bracket. In the embodiment of the present application, a bracket, a cover plate, a connecting column and a ceramic insulating tank are used to jointly constitute the installation structure of the power device. The ceramic insulating tank is the main equipment of the structure, using a new high-performance ceramic material, which has good machinability, high material strength, high thermal conductivity and insulation performance. Encapsulate the power device inside the ceramic insulating tank, which can achieve electrical isolation and heat conduction at the same time. It can not only prevent the power device from discharging and creeping to the external conductor when it is working, but also use the copper seat to conduct the heat emitted by the power device to the ceramic insulating tank. and conduct to the outside world through the ceramic insulating tank to realize heat dissipation.