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CN-122017493-A - Insulation performance simulation detection device for high-voltage direct-current transmission line

CN122017493ACN 122017493 ACN122017493 ACN 122017493ACN-122017493-A

Abstract

The invention discloses an insulation performance simulation detection device for a high-voltage direct-current transmission line, which belongs to the technical field of high-voltage electric line detection and comprises an operation table and an electric line body. The power distribution part with the warning part is fixedly arranged at the top end of the operation desk, and the electric wire body is arranged at the top end of the operation desk. The distribution part is electrically connected with the wire body to be detected through the electric connection end. The top of operation panel is provided with protection machanism, and protection machanism is including setting up the shielding assembly at the operation panel top. According to the invention, the shielding component formed by splicing the arc-shaped shielding plates is adopted, the high-frequency shielding interlayer with the embedded conductive copper bars is integrally formed in the shielding component, the electromagnetic shielding net is adhered to the outer surface of the shielding component through conductive adhesive, the special grounding terminal at the bottom is tightly connected with the embedded conductive copper bars, and the multilayer collaborative shielding structure of an outer shielding net, a middle high-frequency shielding interlayer and inner conductive conduction is formed, so that the potential safety hazard of high-voltage detection is further reduced.

Inventors

  • DI WEIJIA
  • WANG XUEWEI
  • GAO LIANG

Assignees

  • 英电迈森河北通信设备制造有限公司

Dates

Publication Date
20260512
Application Date
20260224

Claims (10)

  1. 1. The insulation performance simulation detection device for the high-voltage direct-current transmission line comprises an operation table (1) and an electric wire body (5), and is characterized in that a power distribution part (2) with a warning part (3) is fixedly arranged at the top end of the operation table (1), the electric wire body (5) is arranged at the top end of the operation table (1), the electric wire body (5) to be detected is electrically connected through an electric connection end (6) by the power distribution part (2), a protection mechanism (7) is arranged at the top end of the operation table (1), the protection mechanism (7) comprises a shielding component (71) arranged at the top end of the operation table (1), the shielding component (71) comprises a supporting frame (713) fixedly arranged at one side of the operation table (1), the supporting frame (713) is close to the top end 712 of the electric wire body (5) and is rotatably provided with a shielding part (712), the shielding part (4242consists of a plurality of arc shielding plates, the splicing surfaces of adjacent shielding plates are provided with conductive sealing rubber strips, the top end of the operation table (1) is provided with a pressurizing part (421) for limiting the electric wire body (5), the pressurizing part (421) is arranged at the top end of the operation table (1), the pressurizing part 421) comprises a plurality of air pressure limiting plates (4212) and the air pressure limiting plates (4211) are arranged at the top surfaces of the operation table (12), the inner wall of limiting plate (4212) close to bleeder vent (4211) is provided with ventilated membrane (4214), be filled with a plurality of adsorption balls (4213) that contain dry powdered carbon in the interior cavity of limiting plate (4212), adsorption balls (4213) are used for carrying out dehumidification to the microenvironment between limiting plate (4212) and electric wire body (5).
  2. 2. The insulation performance simulation detection device for the high-voltage direct-current transmission line, as claimed in claim 1, is characterized in that a cooling component (72) is arranged on one side of the operation table (1), the cooling component (72) comprises an air pump (722) fixedly arranged on the outer side of the operation table (1), a lower cooling plate (727) is fixedly arranged on the outer side of the shielding plate, an upper cooling pipe (728) is arranged on the top end of the lower cooling plate (727) in a communicating mode, an output end of the air pump (722) is arranged on one end of the lower cooling plate (727) in a communicating mode through an air inlet pipe (726), an input end of the air pump (722) is arranged on the upper cooling pipe (728) in a communicating mode through an air outlet pipe (725), and a refrigerating box (721) is externally connected to the air inlet pipe (726) through a connecting pipe (723).
  3. 3. The device for simulating and detecting the insulation performance of the high-voltage direct-current transmission line according to claim 2, wherein a filter plate (724) is fixedly arranged on the outer side of the supporting frame (713), the filter plate (724) is communicated with the connecting pipe (723), and a filter screen for filtering scale is filled in the filter plate (724).
  4. 4. The device for simulating and detecting the insulation performance of the high-voltage direct-current transmission line according to claim 2, wherein a wind pressure assembly (73) is arranged on the surface of the supporting frame (713), the wind pressure assembly (73) comprises a top block (733) fixedly installed on the surface of the supporting frame (713) close to the electric line body (5), an air suction pipe (732) for adsorbing disordered gas around the electric line body (5) is fixedly installed on the outer surface of the top block (733), and the air suction pipe (732) is communicated with the input end of the air pump (722) through an auxiliary pipeline (731).
  5. 5. The device for simulating and detecting the insulation performance of the high-voltage direct-current transmission line according to claim 1, wherein a plurality of clamping rods (416) are fixedly arranged at the top end of the operation table (1), clamping blocks (415) are fixedly arranged on the surface of the shielding plate, the clamping blocks (415) are clamped with the end heads of the clamping rods (416), a high-frequency shielding interlayer with embedded conductive copper bars is integrally formed inside the shielding part (712), a special grounding terminal is arranged at the bottom of the shielding plate and is tightly connected with the embedded conductive copper bars inside the shielding plate, and an electromagnetic shielding net (711) is adhered to the outer surface of the shielding part (712) through conductive adhesive.
  6. 6. The device for simulating and detecting the insulation performance of the high-voltage direct-current transmission line according to claim 1, wherein the limiting mechanism (4) is arranged at the top end of the operating platform (1), the limiting mechanism (4) comprises a stabilizing component (42) arranged at the top end of the operating platform (1), the stabilizing component (42) comprises a rotating rod (422) rotatably arranged at the top end of the operating platform (1), a motor (423) is fixedly arranged at the top end of the operating platform (1), an output shaft of the motor (423) is fixedly connected with the rotating rod (422), and a pressurizing component (421) is arranged on the outer surface of the rotating rod (422).
  7. 7. The device for simulating and detecting the insulation performance of the high-voltage direct-current transmission line according to claim 6, wherein the electric wire body (5) is arranged among a plurality of limiting plates (4212), the limiting plates (4212) are composed of a plurality of arc-shaped plates and are used for limiting the electric wire bodies (5) of different types, and a buffer cushion (4218) is fixedly arranged on the surface, close to the electric wire bodies (5), of the limiting plates (4212).
  8. 8. The device for simulating and detecting the insulation performance of the high-voltage direct-current transmission line according to claim 7, wherein a plurality of friction plates (4217) are fixedly arranged on the surface of the limiting plate (4212) close to the electric line body (5), sliding rods (4216) are fixedly arranged on the surface of the friction plates (4217), the sliding rods (4216) penetrate through the inside of the limiting plate (4212) in a sliding mode, and springs (4215) are fixedly arranged between the sliding rods (4216) and the inner walls of the limiting plate (4212).
  9. 9. The device for simulating and detecting the insulation performance of the high-voltage direct-current transmission line according to claim 1, wherein the adsorption balls (4213) are of hollow net-shaped sphere structures, and the adsorption balls (4213) are in free rolling states in the inner cavities of the limiting plates (4212).
  10. 10. The device for simulating and detecting the insulation performance of the high-voltage direct-current transmission line according to claim 1, wherein the conductive assembly (41) is arranged at the top end of the operation table (1), the conductive assembly (41) comprises a plurality of electric push rods (412) fixedly arranged at the top end of the operation table (1), the output ends of the electric push rods (412) are fixedly provided with conductive rods (411), the bottom ends of the conductive rods (411) are electrically connected with conductive blocks (414), the conductive blocks (414) slide on the surface of the electric line body (5), elastic ropes (413) are arranged between the conductive blocks (414) and the conductive rods (411), and the conductive rods (411) are electrically connected with a ground wire through pressure control components (43).

Description

Insulation performance simulation detection device for high-voltage direct-current transmission line Technical Field The invention relates to the technical field of high-voltage wire detection, in particular to an insulation performance simulation detection device for a high-voltage direct-current power transmission line. Background The insulation performance of the high-voltage direct-current transmission line serving as a core carrier of the power transmission system directly determines the safety and stability of power transmission. Once the insulating layer is damaged, aged, polluted and attached, safety accidents such as electric leakage, short circuit, high-voltage discharge and the like are extremely easy to occur, and serious economic loss and casualties are caused. Therefore, the insulation performance of the high-voltage direct-current transmission line is accurately simulated and detected before the high-voltage direct-current transmission line is put into use and in the operation and maintenance process, and the insulation defect is timely found, so that the high-voltage direct-current transmission line is a key link for guaranteeing the safe and stable operation of a power system. The existing detection device is poor in protection and shielding effect, part of detection devices are only provided with simple protection shells, high-frequency electromagnetic signals, stray electromagnetic interference and high-voltage leakage risks generated in the high-voltage detection process are not considered, even a few devices are provided with shielding structures, the detection devices are mostly simple combinations of single-layer flat plates and grids, gaps exist at the spliced positions, shielding layers are single, and the detection devices are not provided with effective grounding conduction structures, so that the high-frequency electromagnetic interference cannot be effectively blocked, detection signals are distorted, and the accuracy of insulating property detection is affected. Disclosure of Invention The invention aims to provide an insulation performance simulation detection device for a high-voltage direct-current transmission line, which is used for solving the problems that in the background art, a gap exists at a spliced part of a shielding structure, the shielding level is single, and an effective grounding conduction structure is not available. In order to achieve the aim, the technical scheme is that the insulation performance simulation detection device for the high-voltage direct-current transmission line comprises an operation table and an electric wire body, wherein a power distribution part with a warning part is fixedly arranged at the top end of the operation table, the electric wire body is arranged at the top end of the operation table, the power distribution part is electrically connected with the electric wire body to be detected through an electric connection end, a protection mechanism is arranged at the top end of the operation table, the protection mechanism comprises a shielding assembly arranged at the top end of the operation table, the shielding assembly comprises a supporting frame fixedly arranged at one side of the operation table, the supporting frame is rotatably provided with a shielding part close to the top end of the electric wire body, the shielding part consists of a plurality of arc shielding plates, a conductive sealing adhesive tape is arranged on a splicing surface of adjacent shielding plates, the top end of the operation table is provided with a pressurizing part used for limiting the electric wire body, the pressurizing part comprises a limiting plate arranged at the top end of the operation table, a plurality of air holes used for balancing and adjusting air pressure are formed in the outer surface of the limiting plate, the inner wall of the limiting plate close to the air holes is provided with a permeable membrane, the inner cavity of the limiting plate is filled with a plurality of dry powder containing balls used for absorbing dry balls between the electric wire bodies and the adsorption balls for carrying out micro-environmental treatment. As a preferable technical scheme of the invention, one side of the operation table is provided with a cooling component, the cooling component comprises an air pump fixedly arranged on the outer side of the operation table, a lower cooling plate is fixedly arranged on the outer side of the shielding plate, an upper cooling pipe is arranged at the top end of the lower cooling plate in a communicating manner, the output end of the air pump is arranged at one end of the lower cooling plate in a communicating manner through an air inlet pipe, the input end of the air pump is arranged in a communicating manner with the upper cooling pipe through an air outlet pipe, and a refrigerating box is externally connected to the air inlet pipe through a connecting pipe. As a preferable technical scheme of the invention,