Search

CN-224217416-U - DC high-voltage large-current miniature circuit breaker

CN224217416UCN 224217416 UCN224217416 UCN 224217416UCN-224217416-U

Abstract

The utility model relates to the technical field of circuit breakers, and discloses a direct-current high-voltage large-current miniature circuit breaker which comprises a circuit breaker main body, cooling fins, a cleaning assembly and an angle positioning assembly. According to the utility model, the radiating fins, the cleaning assembly and the angle positioning assembly are arranged, so that heat in the circuit breaker main body can be rapidly discharged to the outside through the absorption of the radiating fins in the process of generating the heat by the circuit breaker main body, dust generated in the groove can be rapidly cleaned through the movement of the cleaning assembly when the radiating fins are used for a long time, and the cleaning assembly can be prevented from being continuously positioned in the radiating fins in a rotating mode when the cleaning assembly is not cleaned, and therefore, the efficiency of the radiating fins in radiating work is not affected, and the position can be rapidly fixed after the angle of the cleaning assembly is adjusted to a designated position through the angle positioning assembly.

Inventors

  • WANG HONGJUN
  • LI WENFANG
  • LI YAKAI

Assignees

  • 湖南斯德克智能科技有限公司

Dates

Publication Date
20260508
Application Date
20250422

Claims (5)

  1. 1. A direct current high voltage high current miniature circuit breaker, comprising: A breaker body (1); The radiating fins (2) are fixedly arranged on two sides of the outer wall of the breaker main body (1), and a plurality of fins (5) which are arranged side by side at intervals are arranged on the radiating fins (2); The cleaning assembly (3), the cleaning assembly (3) is arranged on the outer wall of the breaker main body (1) and is positioned outside the radiating fins (2), the cleaning assembly (3) comprises a fixed block (301) arranged on the outer wall of the breaker main body (1) and positioned outside the radiating fins (2), a rectangular hole (302) formed in the fixed block (301), a connecting rod (303) slidingly connected inside the rectangular hole (302), the connecting rod (303) is simultaneously and rotatably connected inside the rectangular hole (302), and a cleaning brush (304) is fixedly arranged on one side of the outer wall of the connecting rod (303), wherein the forming direction of the rectangular hole (302) is consistent with the direction of the side-by-side arrangement of the fins (5); The angle positioning assembly (4), angle positioning assembly (4) sets up on the outer wall of fixed block (301), realizes the rotation spacing to connecting rod (303) with joint mode.
  2. 2. The direct-current high-voltage high-current miniature circuit breaker according to claim 1, wherein the cleaning assembly (3) further comprises a positioning lug (305) fixedly arranged at the top end of the connecting rod (303), the positioning lug (305) is composed of a disc and two groups of convex blocks integrally formed on the outer wall of the disc of the positioning lug (305), and the two groups of convex blocks are arranged at intervals of 90 degrees; The angle positioning assembly (4) comprises a track (401) fixedly arranged on one side of the rectangular hole (302) on the outer wall of the fixed block (301) and a moving block (402) connected to the track (401) in a sliding mode, and the moving block (402) is clamped with the positioning protruding block (305).
  3. 3. The direct-current high-voltage high-current miniature circuit breaker according to claim 2, wherein the angle positioning assembly (4) further comprises a connecting shaft (403) fixedly arranged on the outer wall of the moving block (402) and a clamping block (404) connected to the connecting shaft (403) in a sliding manner, and the clamping block (404) is provided with a groove matched with the convex block of the positioning convex block (305).
  4. 4. The direct-current high-voltage high-current miniature circuit breaker according to claim 3, wherein the angle positioning assembly (4) further comprises a second spring (405) sleeved on the connecting shaft (403).
  5. 5. The direct-current high-voltage high-current miniature circuit breaker according to claim 2, wherein the cleaning assembly (3) further comprises a sleeve (306) arranged at the top end of the positioning lug (305), a connecting handle (307) with one end arranged inside the sleeve (306), and a number one spring (308) with two ends respectively arranged on the outer walls of the connecting handle (307) and the fixed block (301).

Description

DC high-voltage large-current miniature circuit breaker Technical Field The utility model relates to the technical field of circuit breakers, in particular to a direct-current high-voltage large-current miniature circuit breaker. Background In an electrical power system, a circuit breaker is a vital device, the main function of which is to protect the electrical circuit and the device from faults such as overload, short circuits, etc. When overload or short circuit occurs in the circuit, the circuit breaker can rapidly cut off current, so that the expansion of faults is prevented, and the safe and stable operation of the power system is ensured. According to the small-sized direct-current high-voltage and high-current breaker disclosed by the Chinese publication No. CN220065582U, the small-sized direct-current high-voltage and high-current breaker comprises a breaker body and a stabilizing structure, wherein an upper cover is integrally formed at the lower part of the breaker body, an arc-isolating cover is integrally formed at the left side of the middle part of the breaker body, the stabilizing structure comprises a stabilizing frame, a cushion block is integrally formed at the left side of the inner part of the stabilizing frame, a telescopic rod is inserted into the cushion block, rubber blocks are adhered to the left side and the right side of the telescopic rod, a handle spring is integrally formed at the top of the handle, an indicating piece is integrally formed at the right side of the handle and is positioned in the breaker body, a locking spring is integrally formed at the bottom of the indicating piece and is integrally formed at the lower part of the breaker body, a main shaft is movably connected with the locking spring. The direct-current high-voltage large-current miniature circuit breaker has the advantages that the stabilizing structure is arranged in the short circuit breaker body, and the stabilizing structure replaces the original reset tension spring to enhance the stability between the internal structures of the circuit breaker body. When the circuit breaker breaks a circuit, an arc is easy to generate, and the temperature of the arc is extremely high and can reach thousands of degrees centigrade, a large amount of heat energy is released instantaneously, and the continuous heat accumulation easily causes the problems of lubricating oil failure, component expansion deformation and the like of the mechanical structure inside the circuit breaker, so that the normal operation and the reliability of the circuit breaker are affected. Disclosure of utility model The utility model aims to provide a direct-current high-voltage large-current miniature circuit breaker so as to solve the problems that the continuous heat accumulation in the background technology is easy to cause the failure of lubricating oil of a mechanical structure in the circuit breaker, the expansion deformation of parts and the like, thereby influencing the normal operation and the reliability of the circuit breaker. The technical scheme includes that the direct-current high-voltage high-current miniature circuit breaker comprises a circuit breaker main body, radiating fins, cleaning components, angle positioning components and fins, wherein the radiating fins are fixedly arranged on two sides of the outer wall of the circuit breaker main body, the radiating fins are arranged on the radiating fins in a side-by-side mode at intervals, the cleaning components are arranged on the outer wall of the circuit breaker main body and are positioned outside the radiating fins, the cleaning components comprise fixing blocks which are arranged on the outer wall of the circuit breaker main body and are positioned outside the radiating fins, rectangular holes formed in the fixing blocks, connecting rods which are connected inside the rectangular holes in a sliding mode, the connecting rods are simultaneously connected inside the rectangular holes in a rotating mode, cleaning brushes are fixedly arranged on one side of the outer wall of the connecting rods, the opening directions of the rectangular holes are consistent with the directions of the side-by-side of the radiating fins, and the angle positioning components are arranged on the outer wall of the fixing blocks and are in a clamping mode with the connecting rods to realize rotation limiting of the connecting rods. Through adopting above-mentioned technical scheme, can play and realize stable heat dissipation to the circuit breaker main part and realize quick dust clearance to being used for radiating fin. Preferably, the cleaning assembly further comprises a positioning lug fixed at the top end of the connecting rod, the positioning lug is composed of a disc and two groups of convex blocks integrally formed on the outer wall of the disc of the positioning lug, the two groups of convex blocks are arranged at intervals of 90 degrees, the angle positioning assembly comprises a track f