39results about How to "Increase creep distance" patented technology

A 10kV power distribution circuit insulation tower head is disclosed, which is characterized in that: adopting hydrophobic high-strength insulation bar to be assembled with needle-typed insulator by gold tool and form an insulation tower head entity, or adopting hydrophobic high-strength insulation bar to be assembled with gold tool directly and form an insulation tower head. By using the invention, the insulation level of the power distribution circuit can be greatly improved, the thunder discharge air gap can be obviously enlarged, the lightning stroke and line break accidents can be effectively prevented and the climbing distance can be expanded, further, the structure type is easy to improve self-cleaning ability and the occurrence of pollution flashover can be basically and completely precluded, which is beneficial in charged operation, simple in operation process and improves the operation security.

The invention relates to a protection tool using a power protection transmission line, in particular to a device for preventing a conductor from dancing and producing damage to an iron tower. The device comprises a sleeve fixedly connected with a lifting lug I, a pressure plate arranged at one end of the sleeve, a creepage extending skirt arranged around the sleeve, a permanent magnet arranged on the inner wall of the sleeve, a pull rod sleeved in the sleeve and fixedly connected with a lifting lug II and a coil arranged on the pull rod, wherein the coil cuts magnetic force lines in the permanent magnet, and eddy current is produced in the coil so as to produce heat. The generation of the eddy current blocks the relative motion of the conductor connected with the device, and plays a role in consuming the kinetic energy of the conductor.

The invention relates to a protection tool used for an electrical protection transmission line, in particular to a device for preventing the transmission line from waving by using eddy-current heating. The device comprises a sleeve, a pressing plate, a creepage extender, a coil, a pull rod and a permanent magnet, wherein the sleeve is fixedly connected with a lug I; the pressing plate is arranged at one end of the sleeve; the creepage extender is arranged around the sleeve; the coil is arranged on the inner wall of the sleeve; the pull rod is sleeved in the sleeve and is fixedly connected with the lug I; and the permanent magnet is fixedly connected with the pull rod. The coil cuts magnetic lines of force in the permanent magnet to generate eddy-current therein so as to generate heat; and the generated eddy-current hinders the relative movement of the lines connected with the device so as to consume the kinetic energy of the lines.

The invention discloses a windage-yaw prevention insulating spacer, and relates to the technical field of electric power transmission line erection. The spacer comprises an insulating sleeve and two lead fixing clamps, wherein silica gel insulating umbrellas are arranged at intervals on the insulating sleeve; two ends of the insulating sleeve are connected with the two fixed lead clamps through insulating shafts respectively; each of the two fixed lead clamps is provided with a lower opening; and automatic lead opening and closing mechanisms are arranged on the two fixed lead clamps. The insulating spacer is simple in structure and good in insulating effect, leads can be placed very conveniently from lower openings of the fixed lead clamps through special tools on the ground, the installation is convenient and rapid, the operation is easy, time and labor are saved, and short-circuit faults caused by factors such as strong wind, frost, snow and rain, electrodynamic force and the like can be effectively avoided.

The invention relates to a single-phase pouring type combination measuring dry transformer. The single-phase pouring type combination measuring dry transformer comprises a resin case, a current transformer and a voltage transformer, wherein the current transformer is arranged at the upper part of the left end of the resin case; the two terminals of the primary coil of the current transformer are respectively connected to two conducting rods vertically arranged at the left end of the resin case; the voltage transformer is arranged at the lower part of the right end of the resin case; the primary winding of the voltage transformer is connected to any terminal of the primary coil of the current transformer in the resin case; the secondary winding of the voltage transformer is connected to a plug column vertically arranged at the upper part of the right end of the resin case; the winding direction of the primary coil of the current transformer is parallel to the winding direction of the primary winding of the voltage transformer. The single-phase pouring type combination measuring dry transformer is simple in structure, convenient to produce, small in occupied space, large in creep distance, uniform in electric field distribution and high in measuring accuracy, has higher dynamic thermal stability and better overcurrent resistance, and can be suitable for being used in a high-pollution and high-altitude environment.

The invention discloses a 40.5kV switch equipment system. The system comprises a switch cabinet; an instrument chamber, a handcart chamber, a feeder line chamber and a bus chamber are formed in the switch cabinet; the feeder line chamber is arranged above the bus chamber, the handcart chamber is arranged at the left side of the feeder line chamber and the bus chamber, the instrument chamber is arranged at the left upper corner of the handcart chamber, and a circuit breaker module is arranged in the handcart chamber; an upper conductive connector on the circuit breaker module is connected withan upper contact box type current transformer outlet arranged at the feeder line chamber, the inlet of the upper contact box type current transformer is connected with an upper branch bus connector through a grounding switch; a lower conductive connector on the circuit breaker module is connected with a lower contact box type current transformer outlet arranged at the bus chamber, and the lower contact box type current transformer inlet is connected with a lower branch bus connector; and the circuit breaker module comprises a frame, a vacuum arc extinguish chamber, an operating mechanism, a connecting insulation pull rod and an insulating brace rod.

The invention relates to the technical field of insulator creepage prevention structures, in particular to an insulator structure capable of preventing a creepage phenomenon based on power equipment.The insulator structure comprises an upper umbrella skirt, the upper umbrella skirt at least comprises a first large umbrella skirt, an upper insulating arc is fixedly connected to the top of the first large umbrella skirt, a first threaded pipe is fixedly connected to the top of the upper insulating arc, a creepage increasing skirt is fixedly installed on the upper surface of a second large umbrella skirt, and a first fixing screw hole is formed in the position, close to the top, of the second large umbrella skirt; through the arrangement of the combined silicone rubber umbrella cover, the length of the silicone rubber umbrella cover can be adjusted, then the creep distance is effectively adjusted, and the creepage phenomenon is relieved by adjusting the creep distance so as to adapt to different use environments and further adapt to a threaded connection mode, the tightness of combination and connection of the silicone rubber umbrella cover is effectively improved, the integrity of the silicone rubber umbrella cover is guaranteed, the insulating core rod is effectively protected, and the insulating core rod is prevented from being affected by weather and being electrically corroded.

The invention discloses an insulation angle ring and a manufacturing method thereof for a transformer winding. The manufacturing method includes folding one side of a small corrugated paper board in 0.5 mm in the size equal to the difference between the height of a winding wire turn and 1-1.5 mm according to the height and the width of the winding wire turn, folding again in the size equal to the width of the winding wire turn, and finally folding third times in the size equal to the height of the winding wire turn to manufacture a U-shaped insulation angle ring. A high-voltage winding end and a wire turn at the tail end are wrapped by several U-shaped insulation angle rings additionally, and the U-shaped insulation angle rings are directly fastened on the inner side or the outer side of the winding wire turn and then sparsely wrap the same. By the insulation angle ring and the manufacturing method thereof, creepage distance between two sides of the wind wire turn is greatly improved by improving small angle rings of the winding wire turn, and operation efficiency is improved.

The invention relates to a circuit breaker. The circuit breaker comprises a shell, wherein an arc extinguishing chamber is arranged in the shell, a piercing hole is arranged on the corresponding sidewall of the shell, a wall bushing is penetrated and fixed in the piercing hole, the wall bushing comprises a conductive rod and an insulating layer surrounding the conductive rod, one end of the insulating layer overhangs outwards away from the shell, and the other end of the insulating layer overhangs towards the inside of the shell to ensure that the corresponding end of the conductive rod is conductively connected with the arc extinguishing chamber, iron core windings are hermetically arranged in the part outside the shell in the insulating layer, and the iron core windings are sleeved outside the conductive rod to ensure that the iron core windings and the conductive rod form a passive electronic current sensor. The iron core windings are sleeved outside the conductive rod and form thepassive electronic current sensor together with the conductive rod, thereby, the problem of the power supply of the current sensor can be solved, the accuracy of the current sensor can also be improved, and the space inside the shell can be greatly released.

The invention discloses an insulation pressing block and a transformer. The insulation pressing block comprises at least two insulating layers, wherein all the insulating layers are stacked in sequence, and one of the two adjacent insulating layers protrudes relative to the side edge of the other insulating layer. A traditional insulating pressing block is generally integrally formed by electrical ceramics. When the creepage distance of the insulation pressing block is increased by increasing the number of sheds of the insulation pressing block, the size and the weight of the transformer can be increased at the moment; and if the creepage distance of the insulation pressing block is increased by increasing the radian of the shed, the electrical ceramic insulation pressing block is prone to crack. Compared with a traditional insulation pressing block, the insulation pressing block comprises at least two insulating layers which are stacked in sequence, and one of the two adjacent insulating layers is arranged in a protruding mode relative to the side edge of the other insulating layer, thus when the creepage distance of the insulation pressing block needs to be adjusted, only the protruding length of one of the two adjacent insulating layers relative to the other insulating layer needs to be adjusted.

An outdoor high-voltage isolation energy-taking capacitor structure comprises an insulation tube, wherein two ends of the insulation tube are sealed with a short-diameter cover plate and a long-diameter cover plate respectively; a spring, a high-voltage fuse and a high-voltage capacitor are mounted in the insulation tube sequentially from the short-diameter cover plate to the long-diameter cover plate; the outer wall of the insulation tube is sleeved with an insulation sleeve; more than one umbrella-shaped skirt structure is arranged on the periphery of the insulation sleeve; and the umbrella-shaped skirt structures are arranged at intervals in the axial direction of the insulation sleeve. According to the outdoor high-voltage isolation energy-taking capacitor structure, the insulation tube is sleeved with the insulation sleeve, and the umbrella-shaped skirt structures are arranged on the outer wall of the insulation sleeve, so that the creep distance of a high-voltage capacitor can be increased greatly, the problem that the insulation degree of an outdoor distribution network line monitoring device is insufficient due to damp climate, heavy rain, salt fog and air pollution when outdoor distribution network line monitoring device are subjected to high-voltage energy-taking and the problem that the insulativity is damaged under the condition of a very low temperature in an extremely cold area are solved, the electrical performance is good, the mounting is convenient, and the service life is long.