35kV high-voltage vacuum circuit breaker

Abstract

The utility model belongs to the field of vacuum circuit breakers, and provides a 35kV high-voltage vacuum circuit breaker, which comprises a modularized mechanism, a frame shell, a solid-sealed polar pole, a transmission shaft assembly, a transmission main crank arm, a main connecting plate, a steering crank arm, a small connecting plate, a three-phase connecting plate and a plurality of shaft pins, the frame shell comprises a short side part and a long side part; the solid-sealed polar pole comprises three vacuum arc-extinguishing chambers which are arranged longitudinally. According to the invention, the three vacuum arc extinguish chambers are arranged longitudinally, so that the occupied space is reduced; through the transmission shaft assembly, the main connecting lever, the main connecting plate, the steering connecting lever, the small connecting plate and the three-phase connecting plate, a simpler transmission structure is realized, the cost is reduced, the transmission rate of the device is improved, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of vacuum circuit breakers, in particular to a 35kV high-voltage vacuum circuit breaker. Background Art

[0002] A circuit breaker primarily consists of a vacuum interrupter and an operating mechanism. The vacuum interrupter, the primary component for switching loads, primarily extinguishes arcs and switches the circuit. The operating mechanism primarily provides the energy for the vacuum interrupter to switch on and off. The transmission solution bridges the gap between the vacuum interrupter and the operating mechanism.

[0003] The three-phase vacuum interrupters in existing circuit breaker structures are primarily arranged left, center, and right, resulting in a large width and occupying a large amount of space. This significantly impacts the width of the distribution room when multiple cabinets are combined. The three-phase vacuum interrupters in existing circuit breaker structures require separate connections to the modular mechanism, requiring numerous transmission components and increasing costs. The large number of transmission components in existing circuit breakers also requires high energy to operate, placing significant stress on components and potentially shortening their lifespan. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the purpose of the present utility model is to provide a 35kV high-voltage vacuum circuit breaker, which reduces space occupancy by setting three vacuum interrupter chambers arranged longitudinally; through the assembly of the transmission shaft, the transmission main crank arm, the main connecting plate, the steering crank arm, the small connecting plate, and the three-connecting plate, a simpler transmission structure is achieved, the cost is reduced, and the transmission rate and life of the device are improved.

[0005] To achieve the above purpose, the present invention provides the following solutions:

[0006] A 35kV high-voltage vacuum circuit breaker comprises: a modular structure, a frame housing, a sealed pole, a transmission shaft assembly, a transmission main crank arm, a main connecting plate, a steering crank arm, a small connecting plate, a three-way connecting plate, and a plurality of shaft pins; the frame housing comprises: a short side portion and a long side portion; the sealed pole comprises: a first sub-pole, a second sub-pole, and a third sub-pole arranged in sequence longitudinally;

[0007] The frame shell is in an inverted L shape; the long side of the frame shell is placed horizontally; the modular mechanism is fixed to the inside of the short side part by the axle pin; the sealed pole is fixed to the upper side of the long side part by the axle pin; the transmission shaft assembly and the transmission main crank arm are both arranged on the outside of the short side part; the transmission shaft assembly is connected to the modular mechanism through a bearing; the main connecting plate, the steering crank arm, the small connecting plate and the three-connecting plate are all arranged on the outside of the long side part; the transmission main crank arm is fixedly connected to the transmission shaft assembly by the axle pin; The main connecting plate is connected to the pin hole of the transmission main crank arm through the axle pin; the side of the steering crank arm close to the first sub-column is connected to the pin hole of the main connecting plate away from the transmission main crank arm; the first sub-column, the second sub-column and the third sub-column are all connected to one side of a small connecting plate; the side of each small connecting plate away from the sealed pole is connected to the pin hole in the middle of a steering crank arm; one side of each steering crank arm is fixed to the outer side of the long side portion by the axle pin; the non-fixed side of each steering crank arm is connected to the three-connecting plate;

[0008] The modular mechanism is used to drive the transmission shaft assembly to rotate clockwise or counterclockwise; the sealed pole is used to perform closing or opening operations; the transmission shaft assembly is used to drive the transmission main crank arm to rotate clockwise or counterclockwise; the transmission main crank arm is used to drive the main connecting plate to move toward the long side portion or toward the short side portion; the main connecting plate is used to drive the three-connecting plate to move toward the long side portion or toward the short side portion; the three-connecting plate is used to drive the steering crank arm to rotate clockwise or counterclockwise; the steering crank arm is used to drive the small connecting plate to move upward or downward; the small connecting plate is used to drive the sealed pole to close or open.

[0009] Preferably, the first sub-column, the second sub-column and the third sub-column each include: a static contact, a moving contact, a vacuum interrupter and an insulating pull rod;

[0010] The static contact is arranged at the top end of the vacuum interrupter; the moving contact is fixed to one end of the insulating pull rod; the side of the insulating pull rod with the moving contact is arranged inside the vacuum interrupter; the end of the insulating pull rod away from the moving contact is connected to the side of the small connecting plate away from the steering arm through the shaft pin;

[0011] The insulating pull rod is used to control the relative state of the moving contact and the static contact; the relative state includes: a separated state and a contact state.

[0012] The utility model discloses the following technical effects:

[0013] The utility model solves the problem of low space utilization of existing equipment layout by setting three vacuum interrupter chambers arranged longitudinally, and realizes reduction of space occupied by the device; through the assembly of transmission shaft, transmission main crank arm, main connecting plate, steering crank arm, small connecting plate, and three-connecting plate, the problem of complicated transmission structure and low transmission rate of existing equipment is solved, and a simpler transmission structure is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 A schematic structural diagram of a 35kV high-voltage vacuum circuit breaker provided in an embodiment of the present utility model;

[0016] Description of reference numerals:

[0017] 1- transmission main crank arm, 2- main connecting plate, 3- steering crank arm, 4- small connecting plate, 5- three-way connecting plate, 6- axle pin, I- modular mechanism, II- frame shell, III- solid-sealed pole, IV- transmission shaft assembly. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] The purpose of the utility model is to provide a 35kV high-voltage vacuum circuit breaker, which reduces space occupancy by setting three vacuum interrupter chambers arranged longitudinally; through the assembly of the transmission shaft, the transmission main crank arm, the main connecting plate, the steering crank arm, the small connecting plate, and the three-connecting plate, a simpler transmission structure is achieved, the cost is reduced, and the transmission rate and service life of the device are improved.

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0021] Figure 1 A schematic diagram of the structure of a 35kV high voltage vacuum circuit breaker provided in an embodiment of the present invention is shown in FIG. Figure 1As shown, the utility model provides a 35kV high-voltage vacuum circuit breaker, comprising: a modular structure I, a frame housing II, a sealed pole III, a transmission shaft assembly IV, a transmission main crank arm 1, a main connecting plate 2, a steering crank arm 3, a small connecting plate 4, a three-connecting plate 5, and a plurality of shaft pins 6; the frame housing II comprises: a short side portion and a long side portion; the sealed pole III comprises: a first sub-pole, a second sub-pole, and a third sub-pole arranged in sequence longitudinally;

[0022] The frame shell II is in an inverted L shape; the long side of the frame shell II is placed horizontally; the modular mechanism I is fixed to the inside of the short side part by the shaft pin 6; the sealed pole III is fixed to the upper side of the long side part by the shaft pin 6; the transmission shaft assembly IV and the transmission main crank arm 1 are both arranged on the outside of the short side part; the transmission shaft assembly IV is connected to the modular mechanism I through a bearing; the main connecting plate 2, the steering crank arm 3, the small connecting plate 4 and the three-connecting plate 5 are all arranged on the outside of the long side part; the transmission main crank arm 1 is fixedly connected to the transmission shaft assembly IV by the shaft pin 6 The main connecting plate 2 is connected to the pin hole of the transmission main crank arm 1 through the axle pin 6; the side of the steering crank arm 3 close to the first sub-column is connected to the pin hole of the main connecting plate 2 away from the transmission main crank arm 1; the first sub-column, the second sub-column and the third sub-column are all connected to one side of a small connecting plate 4; the side of each small connecting plate 4 away from the sealed pole III is connected to the pin hole in the middle of a steering crank arm 3; one side of each steering crank arm 3 is fixed to the outer side of the long side by the axle pin 6; the non-fixed side of each steering crank arm 3 is connected to the three-connecting plate 5;

[0023] The modular mechanism I is used to drive the drive shaft assembly IV to rotate clockwise or counterclockwise; the sealed pole III is used to perform closing or opening operations; the drive shaft assembly IV is used to drive the transmission main crank arm 1 to rotate clockwise or counterclockwise; the transmission main crank arm 1 is used to drive the main connecting plate 2 to move toward the long side part or toward the short side part; the main connecting plate 2 is used to drive the three-connecting plate 5 to move toward the long side part or toward the short side part; the three-connecting plate 5 is used to drive the steering crank arm 3 to rotate clockwise or counterclockwise; the steering crank arm 3 is used to drive the small connecting plate 4 to move upward or downward; the small connecting plate 4 is used to drive the sealed pole III to close or open.

[0024] Preferably, the first sub-column, the second sub-column and the third sub-column each include: a static contact, a moving contact, a vacuum interrupter and an insulating pull rod;

[0025] The static contact is arranged at the top of the vacuum interrupter; the moving contact is fixed to one end of the insulating pull rod; the side of the insulating pull rod driving the contact is arranged inside the vacuum interrupter; the end of the insulating pull rod away from the moving contact is connected to the side of the small connecting plate 4 away from the steering arm 3 through the shaft pin 6;

[0026] The insulating pull rod is used to control the relative state of the moving contact and the static contact; the relative state includes: separation state and contact state.

[0027] Specifically, the sealed pole is defined as phase A from the direction away from the mechanism, phase B in the middle, and phase C close to the mechanism. Furthermore, the three-way connecting plate 5 is connected to the pull rods with 6 holes for the three-phase A / B / C through a pin shaft to achieve three-phase synchronous action. Description of the sealed pole: The interior of the sealed pole mainly includes a static contact, a moving contact, and a pull rod with 6 holes for the shaft pin. When the pull rod with 6 holes for the shaft pin moves downward, the moving contact is separated from the static contact, and after separation, normal conduction is impossible. At this time, the sealed pole is in a disconnected state; further, when the pull rod with 6 holes for the shaft pin moves upward, the moving contact contacts the static contact, and normal conduction is possible after contact. At this time, the sealed pole is in a closed state. The sealed pole is the load-bearing element for the operation of the user's power transmission and distribution ring network. It realizes the closing and opening of the user's entire circuit through the two states of closed and open. The modular operating mechanism mainly provides energy for the closing and opening of the sealed pole. The main operating method is to convert the spring elastic potential energy into rotational mechanical kinetic energy. The transmission scheme is the intermediate link between the modular operating mechanism and the sealed pole. It mainly transfers the kinetic energy converted by the modular operating mechanism to the sealed pole through the transmission scheme, so that the sealed pole can achieve the two states of closed and open.

[0028] The beneficial effects of the utility model are as follows:

[0029] The utility model reduces space occupation by providing three vacuum interrupter chambers arranged longitudinally; through the assembly of the transmission shaft, the transmission main crank arm, the main connecting plate, the steering crank arm, the small connecting plate, and the three-connecting plate, a simpler transmission structure is achieved, the cost is reduced, and the transmission rate and service life of the device are improved.

[0030] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0031] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A 35kV high voltage vacuum circuit breaker, characterized in that: include: Modular structure, frame shell, sealed pole, transmission shaft assembly, transmission main crank arm, main connecting plate, steering crank arm, small connecting plate, three-connecting plate and several axle pins; the frame shell includes: short side part and long side part; the sealed pole includes: first sub-column, second sub-column and third sub-column arranged in sequence in the longitudinal direction; The frame shell is in an inverted L shape; the long side of the frame shell is placed horizontally; the modular mechanism is fixed to the inside of the short side part by the axle pin; the sealed pole is fixed to the upper side of the long side part by the axle pin; the transmission shaft assembly and the transmission main crank arm are both arranged on the outside of the short side part; the transmission shaft assembly is connected to the modular mechanism through a bearing; the main connecting plate, the steering crank arm, the small connecting plate and the three-connecting plate are all arranged on the outside of the long side part; the transmission main crank arm is fixedly connected to the transmission shaft assembly by the axle pin; The main connecting plate is connected to the pin hole of the transmission main crank arm through the axle pin; the side of the steering crank arm close to the first sub-column is connected to the pin hole of the main connecting plate away from the transmission main crank arm; the first sub-column, the second sub-column and the third sub-column are all connected to one side of a small connecting plate; the side of each small connecting plate away from the sealed pole is connected to the pin hole in the middle of a steering crank arm; one side of each steering crank arm is fixed to the outer side of the long side portion by the axle pin; the non-fixed side of each steering crank arm is connected to the three-connecting plate; The modular mechanism is used to drive the transmission shaft assembly to rotate clockwise or counterclockwise; the sealed pole is used to perform closing or opening operations; the transmission shaft assembly is used to drive the transmission main crank arm to rotate clockwise or counterclockwise; the transmission main crank arm is used to drive the main connecting plate to move toward the long side portion or toward the short side portion; the main connecting plate is used to drive the three-connecting plate to move toward the long side portion or toward the short side portion; the three-connecting plate is used to drive the steering crank arm to rotate clockwise or counterclockwise; the steering crank arm is used to drive the small connecting plate to move upward or downward; the small connecting plate is used to drive the sealed pole to close or open.

2. A 35kV high voltage vacuum circuit breaker according to claim 1, characterized in that: The first sub-column, the second sub-column and the third sub-column each include: a static contact, a moving contact, a vacuum interrupter and an insulating pull rod; The static contact is arranged at the top end of the vacuum interrupter; the moving contact is fixed to one end of the insulating pull rod; the side of the insulating pull rod with the moving contact is arranged inside the vacuum interrupter; One end of the insulating pull rod away from the moving contact is connected to the side of the small connecting plate away from the steering arm through the shaft pin; The insulating pull rod is used to control the relative state of the moving contact and the static contact; the relative state includes: a separated state and a contact state.

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