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CN-224217365-U - Sleeve for three-phase power capacitor

CN224217365UCN 224217365 UCN224217365 UCN 224217365UCN-224217365-U

Abstract

The application relates to a sleeve for a three-phase power capacitor, which relates to the technical field of power engineering and comprises a tube body and a conductive rod arranged in the tube body, wherein the top end of the tube body is provided with an electrode joint, one end of the conductive rod is connected with the electrode joint, the other end of the conductive rod is connected with the inside of the capacitor, the bottom end of the tube body is provided with a connecting mechanism, and the tube body is connected with the capacitor through the connecting mechanism. According to the application, the silicone rubber sleeve is sleeved outside the pipe body, so that the whole pipe sleeve has excellent electrical insulation, is more resistant to high and low temperature and ageing compared with a porcelain sleeve, the probability of deformation of the whole pipe sleeve in a temperature difference environment is reduced, the structural stability and the tightness are ensured, and then the first sealing component and the second sealing component are arranged on the silicone rubber sleeve, so that the tightness of the joint between the silicone rubber sleeve and the electrode joint and the connecting flange is ensured, and the tightness of the whole pipe sleeve in connection with the capacitor is improved, and the pipe sleeve is stable and durable.

Inventors

  • XIA LINGHUI
  • GUO ZHIQI
  • QIAN DONGLIANG
  • Xie Yangshun
  • PENG JUNZHE
  • PENG JUN
  • LIN JIE

Assignees

  • 贝爱达电器制造股份有限公司

Dates

Publication Date
20260508
Application Date
20250423

Claims (7)

  1. 1. The sleeve for the three-phase power capacitor is characterized by comprising a pipe body (11) and a conductive rod (12) arranged in the pipe body (11), wherein an electrode joint (13) is arranged at the top end of the pipe body (11), one end of the conductive rod (12) is connected with the electrode joint (13), the other end of the conductive rod (12) is connected with the inside of the capacitor, a connecting mechanism (2) is arranged at the bottom end of the pipe body (11), the pipe body (11) is connected with the capacitor through the connecting mechanism (2), and the connecting mechanism (2) comprises: The connecting flange (21) is arranged at the bottom end of the pipe body (11), and the pipe body (11) is connected with the capacitor through the connecting flange (21); The silicon rubber sleeve (22), silicon rubber sleeve (22) cover is established on body (11), be provided with first seal assembly (3) and second seal assembly (4) on silicon rubber sleeve (22), the top of silicon rubber sleeve (22) is connected with electrode joint (13) through first seal assembly (3), first seal assembly (3) seal the junction of silicon rubber sleeve (22) and electrode joint (13), the bottom of silicon rubber sleeve (22) is connected with flange (21) through second seal assembly (4), second seal assembly (4) seal the junction of silicon rubber sleeve (22) and flange (21).
  2. 2. A bushing for a three-phase power capacitor according to claim 1, characterized in that the first sealing assembly (3) comprises: The first sealing sleeve ring (31), the first sealing sleeve ring (31) is arranged at the top end of the silicon rubber sleeve (22), and threads are formed on the inner annular wall of the first sealing sleeve ring (31); A first sealing ring (32), the first sealing ring (32) being arranged on the electrode joint (13), the first sealing ring (32) being in threaded connection with the first sealing collar (31); The sealing device comprises a first sealing ring (33), wherein the first sealing ring (33) is sleeved on the outer side wall of a first sealing collar (31), a sealing folded edge (34) is arranged on the first sealing ring (33), and the sealing folded edge (34) shields the joint of the first sealing ring (32) and the first sealing collar (31).
  3. 3. A bushing for a three-phase power capacitor according to claim 1, characterized in that the second sealing assembly (4) comprises: the second sealing ring (41) is arranged at the bottom end of the silicon rubber sleeve (22), and threads are formed on the outer side wall of the second sealing ring (41); A second sealing nut (42), wherein the second sealing nut (42) is arranged on the connecting flange (21), and the second sealing ring (41) is connected to the second sealing nut (42) in a threaded manner; The second sealing ring (43), second sealing ring (43) cover is established on second sealing nut (42), second sealing ring (43) shelter from the junction between second sealing nut (42) and second sealing ring (41).
  4. 4. A bushing for a three-phase power capacitor according to claim 3, wherein a sealing cushion (44) is provided in the second sealing nut (42), and the sealing cushion (44) fills the gap between the inner and outer side walls of the second sealing ring (41) under the extrusion action of the second sealing ring (41).
  5. 5. A bushing for a three-phase power capacitor according to claim 1, wherein the connection flange (21) is provided with a protective cover (14), the protective cover (14) is provided with a clamping assembly (5), the protective cover (14) is fixed between the clamping assembly (5) and the connection flange (21), and the protective cover (14) covers the surface of the connection flange (21).
  6. 6. A bushing for a three-phase power capacitor according to claim 5, wherein the clamping assembly (5) comprises: The clamping block (51) is provided with a horizontal sliding groove (54) on the inner side wall of the protective cover (14), and the clamping block (51) is slidably arranged on the sliding groove (54); The clamping spring (52) is arranged on the inner bottom wall of the sliding groove (54) and is connected with the clamping block (51), and part of the clamping block (51) extends out of the sliding groove (54) under the action of the clamping spring (52) and is abutted against the outer side wall of the connecting flange (21); The pull rod (53), the pull rod (53) is installed on the protective cover (14) in a horizontal sliding mode, one end of the pull rod (53) is located outside the protective cover (14), and the other end of the pull rod (53) is connected with the clamping block (51).
  7. 7. A bushing for a three-phase power capacitor according to claim 6, wherein a side wall of one end of the clamping block (51) penetrating out of the sliding groove (54) and close to the opening of the protective cover (14) is provided with a circular arc-shaped guide surface (55).

Description

Sleeve for three-phase power capacitor Technical Field The application relates to the technical field of power engineering, in particular to a sleeve for a three-phase power capacitor. Background Power capacitor bushings are an important component of a capacitor for protecting the internal components of the capacitor while providing insulation and electrical connection functions. It is generally composed of conductors, insulating materials and a sealing structure, and is capable of isolating the high-voltage conductive portion of the capacitor from the external environment, preventing current leakage or short circuit, and ensuring safe operation of the capacitor at high voltage. The conventional power capacitor generally uses a porcelain bushing, which can withstand the electric field intensity in a high-voltage environment, prevents current leakage to the outside, and ensures safe operation of the capacitor. However, the porcelain bushing is easy to deform when facing a temperature difference environment, so that the tightness between the bushing and the capacitor is poor, air and moisture are easy to invade between the bushing and the capacitor, insulation aging is accelerated, and equipment faults are generated. Disclosure of utility model In order to improve the tightness between the bushing and the capacitor, the application provides a bushing for a three-phase power capacitor. The application provides a sleeve for a three-phase power capacitor, which adopts the following technical scheme: The utility model provides a sleeve pipe for three-phase power capacitor, includes the body and sets up the conducting rod in the body is inside, the body top is provided with electrode connection, conducting rod one end is connected with electrode connection, the other end and the condenser internal connection of conducting rod, the body bottom is provided with coupling mechanism, the body is connected with the condenser through coupling mechanism, coupling mechanism includes: the connecting flange is arranged at the bottom end of the pipe body, and the pipe body is connected with the capacitor through the connecting flange; The silicon rubber sleeve is sleeved on the pipe body, a first sealing component and a second sealing component are arranged on the silicon rubber sleeve, the top of the silicon rubber sleeve is connected with the electrode joint through the first sealing component, the first sealing component seals the joint of the silicon rubber sleeve and the electrode joint, the bottom of the silicon rubber sleeve is connected with the connecting flange through the second sealing component, and the second sealing component seals the joint of the silicon rubber sleeve and the connecting flange. Through adopting above-mentioned technical scheme, establish the silicone rubber cover at the body cover, then make the pipe box whole in having excellent electrical insulation compare in ceramic sleeve pipe high low temperature more resistant, ageing-resistant, reduced the probability that the pipe box whole warp under the difference in temperature environment, guaranteed structural stability and leakproofness, then sheathe in at silicone rubber and install first seal assembly and second seal assembly, then guaranteed the leakproofness of junction between silicone rubber cover and electrode connection and flange to the leakproofness when having improved the pipe box whole and being connected with the condenser has been stable durable. Optionally, the first sealing assembly includes: the first sealing lantern ring is arranged at the top end of the silicon rubber sleeve, and threads are formed on the inner annular wall of the first sealing lantern ring; the first sealing ring is arranged on the electrode joint and is in threaded connection with the first sealing lantern ring; The first sealing ring is sleeved on the outer side wall of the first sealing ring, a sealing folded edge is arranged on the first sealing ring, and the sealing folded edge shields the joint of the first sealing ring and the first sealing ring. Through adopting above-mentioned technical scheme, install first seal ring on silicone rubber cover top, install first sealing ring on electrode joint, use first sealing ring to wrap up first seal ring and first sealing ring after first sealing ring and first seal ring threaded connection together to the sealed work of connection of silicone rubber cover and electrode joint has been accomplished. Optionally, the second sealing assembly includes: The second sealing ring is arranged at the bottom end of the silicon rubber sleeve, and threads are formed on the outer side wall of the second sealing ring; the second sealing nut is arranged on the connecting flange, and the second sealing ring is connected to the second sealing nut in a threaded manner; The second sealing ring is sleeved on the second sealing nut, and the second sealing ring shields the joint between the second sealing nut and the second sealing r