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CN-224216761-U - Magnetic isolation bolt with high current impedance for impact generator test

CN224216761UCN 224216761 UCN224216761 UCN 224216761UCN-224216761-U

Abstract

The utility model discloses a magnetic isolation bolt with high current impedance in a shock generator test, which comprises impedance, wherein a bracket is arranged on the outer side of the impedance, the bracket comprises a plurality of H steels I which are arranged in parallel from top to bottom, H steels II which are arranged vertically are arranged at one end parts of the H steels, one end part of the H steel extends between the parallel wall surfaces of the H steels II, a bolt component is locked on the wall surfaces of the H steels I and H steels II in a penetrating way, the bolt component is structurally characterized by comprising a sleeve, a nut is locked on the bolt after penetrating the sleeve, gaskets and backing plates are respectively arranged between the two ends of the sleeve and the heads and the nuts of the bolt, so that the electrostatic magnetic field isolation of the bracket steel structure is realized by combining the sleeve with the backing plates while the connection of the bracket steel structure is realized by the bolts, the gaskets and the nuts, the interference of the electrostatic magnetic field in the test is effectively reduced, the partial discharge risk is reduced, the smooth progress of the test is assisted, and the method is particularly suitable for high-voltage sensitive environment, and the practicability is good.

Inventors

  • HU CHUN
  • XIA SONGQING
  • JI XIYUE
  • CHEN FENGLIN
  • ZHANG DEWU
  • WANG ZHANBIN

Assignees

  • 苏州电器科学研究院股份有限公司

Dates

Publication Date
20260508
Application Date
20250514

Claims (8)

  1. 1. The magnetic isolation bolt for high-current impedance in the impact generator test comprises an impedance (4), wherein a bracket is arranged on the outer side of the impedance (4), and the magnetic isolation bolt is characterized by comprising a plurality of H steel I (1) which are arranged in parallel at intervals from top to bottom, H steel II (3) which are vertically arranged are commonly arranged at the end parts of the H steel I (1), the end parts of the H steel I (1) extend into the space between parallel wall surfaces of the H steel II (3), and bolt assemblies (2) are locked through the wall surfaces of the H steel I (1) and the H steel II (3); The bolt assembly (2) is structurally characterized by comprising a sleeve (24), wherein a nut (27) is locked after a bolt (21) penetrates through the sleeve (24), and gaskets and backing plates are respectively arranged between two ends of the sleeve (24) and the heads of the bolt (21) and between the two ends of the bolt and the nut (27).
  2. 2. The magnetic isolation bolt for high current impedance in the impact generator test of claim 1, wherein the outer wall surfaces of the two sides of the first H steel (1) are attached between the opposite inner wall surfaces of the second H steel (3), and sequentially penetrate through the single side wall surface of the second H steel (3) and the single side wall surface locking bolt assembly (2) of the first H steel (1) from outside to inside.
  3. 3. The magnetic isolation bolt for high current impedance in the impact generator test according to claim 1 or 2, wherein a gasket III (5) is pressed between the outer wall surface of the H steel I (1) and the inner wall surface of the H steel II (3).
  4. 4. A magnetic isolation bolt with high current resistance used in an impact generator test as claimed in claim 3, wherein the gasket III (5) is made of a non-magnetic conductive material.
  5. 5. The magnetic isolation bolt for high current impedance in the impact generator test of claim 1 wherein said backing plate comprises a first backing plate (23) and a second backing plate (25) respectively attached to the outer wall surfaces of two sides of a second H steel (3), and said backing plate comprises a first backing plate (22) and a second backing plate (26) respectively attached to the outer wall surfaces of the corresponding backing plates.
  6. 6. The magnetic isolation bolt for high current impedance in the shock generator test of claim 1 wherein said backing plate is a square structure with a side dimension greater than the diameter dimension of the shim.
  7. 7. The magnetic isolation bolt for high current impedance in the shock generator test as set forth in claim 1, wherein a round hole into which the end of the sleeve (24) extends is formed in the center of the backing plate.
  8. 8. A magnetic isolation bolt with high current resistance for impact generator test according to claim 1, wherein the sleeve (24) and the backing plate are made of non-magnetic conductive materials.

Description

Magnetic isolation bolt with high current impedance for impact generator test Technical Field The utility model relates to the technical field of impact generator test facilities, in particular to a magnetism isolating bolt with high current impedance for an impact generator test. Background The operation characteristic of the impact generator is that the whole operation condition is in the transient process of sudden short circuit, and each test is equivalent to one sudden short circuit of the outlet port of the conventional generator. In the prior art, the support joints of the impedance chambers are structurally connected by adopting common bolt assemblies, and the bolt assemblies have magnetic conductivity. When a high-voltage high-current short circuit test is performed, the electrostatic magnetic field is very easy to conduct through the bolt connection part, electromagnetic interference is caused, the ignition phenomenon is caused at the impedance chamber bracket connection part, the stability of high-voltage equipment is affected, a certain potential safety hazard exists, and the malfunction of the comprehensive protection system and inaccurate signal acquisition can be caused, so that the test fails. Disclosure of utility model In order to solve the problems, the application provides the magnetic isolation bolt with reasonable structure, which is used for high-current impedance in the impact generator test, so that the interference of an electrostatic magnetic field in the test is effectively reduced, the smooth performance of the test is ensured, and the magnetic isolation bolt is particularly suitable for a high-voltage sensitive environment and has good practicability. The technical scheme adopted by the utility model is as follows: the magnetic isolation bolt for high-current impedance in the impact generator test comprises impedance, wherein a bracket is arranged on the outer side of the impedance, the bracket comprises a plurality of H steel I which are arranged in parallel from top to bottom at intervals, and H steel II which is arranged vertically is arranged at one end part of the H steel I; The bolt assembly is structurally characterized by comprising a sleeve, wherein a nut is locked after a bolt penetrates through the sleeve, and gaskets and backing plates are respectively arranged between two ends of the sleeve and the head of the bolt and between the two ends of the bolt and the nuts. As a further improvement of the above technical scheme: The outer wall surfaces of one side of the H steel are attached between the two opposite inner wall surfaces of the H steel, and sequentially penetrate through the two single side wall surfaces of the H steel and the locking bolt assembly of the single side wall surface of the H steel from outside to inside. And a third gasket is pressed between the first outer wall surface of the H steel and the second inner wall surface of the H steel. And the gasket III is made of a non-magnetic conductive material. The backing plate comprises a backing plate I and a backing plate II which are respectively attached to the outer wall surfaces of two sides of H steel, and the gasket comprises a gasket I and a gasket II which are respectively attached to the outer wall surfaces of the corresponding backing plate. The backing plate is of a square structure with the side length dimension larger than the diameter dimension of the gasket. The center of the backing plate is provided with a round hole into which the end part of the sleeve pipe extends. The sleeve and the backing plate are made of non-magnetic materials. Compared with the prior art, the utility model has the following beneficial effects: According to the utility model, the connection of the bracket steel structure is realized by the bolts, the gaskets and the nuts, and meanwhile, the electrostatic magnetic field isolation of the bracket steel structure is realized by combining the sleeve with the backing plate, so that the interference of the electrostatic magnetic field in the test is effectively reduced, the local discharge risk is reduced, the smooth performance of the test is ensured, and the utility model is particularly suitable for the high-voltage sensitive environment and has good practicability. Drawings FIG. 1 is a schematic view of the installation of H-steel one and H-steel two in the bracket of the utility model. Fig. 2 is a partial enlarged view at a in fig. 1. Fig. 3 is a schematic structural view of the bolt assembly of the present utility model. Fig. 4 is an exploded view of the bolt assembly of the present utility model. The device comprises a first steel H, a second steel H, an impedance, a third gasket and a fourth gasket, wherein the first steel H, the second steel H, the impedance and the third gasket are respectively arranged; 21. Bolt, 22, first gasket, 23, first backing plate, 24, sleeve, 25, second backing plate, 26, second gasket, 27 and nut. Detailed Description The following d