10kv primary and secondary fusion intelligent outdoor vacuum circuit breaker

Abstract

The utility model relates to a 10kv primary and secondary fusion intelligent outdoor vacuum circuit breaker. The technical problem to be solved by the utility model is to provide a 10kv primary and secondary fusion intelligent outdoor vacuum circuit breaker. According to the technical scheme, the circuit breaker comprises a circuit breaker shell, a vacuum arc extinguish chamber assembly, a current transformer, an outer isolation wiring board and an isolation knife assembly, the isolation knife assembly comprises a first knife board, a second knife board, a pin and a knife board adjusting device, and a knife board contact gap is formed between the first knife board and the second knife board. The cutting board adjusting device comprises an adjusting screw, an outer extrusion pad, an inner limiting pad, an inner buffer spring and a fastening nut. Compared with the prior art, the 10kv primary and secondary fusion intelligent outdoor vacuum circuit breaker has the advantages that through the arrangement of the outer extrusion pad, the inner limiting pad and the inner buffer spring, the flexible adjustment of the contact gap of the cutting board is realized, the contact gap of the cutting board can be adjusted, the smoothness of the plugging process is improved, and the abrasion of the contact parts of the cutting board and the wiring board is reduced.

Description

Technical Field

[0001] This utility model relates to a 10kV integrated primary and secondary intelligent outdoor vacuum circuit breaker. Background Technology

[0002] The 10kV integrated primary and secondary intelligent outdoor vacuum circuit breaker is an important piece of equipment used in medium and high voltage power transmission and distribution systems. It integrates the functions of primary equipment (such as vacuum interrupters, current transformers, and external isolation terminals) and secondary equipment (such as protection devices and communication modules). A typical 10kV integrated primary and secondary intelligent outdoor vacuum circuit breaker includes a circuit breaker housing, a vacuum interrupter assembly spaced on the circuit breaker housing, a current transformer, an external isolation terminal, and an isolating blade assembly for switching between the current transformer and the external isolation terminal. The isolating blade assembly enables the switching of the current transformer. Due to frequent contact between the isolating blade assembly and the external isolation terminal, existing isolating blade assemblies have the following problems during insertion and removal: 1. The isolating blade assembly and the external isolation terminal are inserted too tightly, resulting in uneven insertion and removal. Frequent insertion and removal can easily lead to wear on the contact parts of the blade and the terminal, reducing the service life of the equipment; 2. During frequent insertion and removal, the isolating blade assembly lacks a reasonable buffering and adjustment mechanism, which can easily generate large impact forces during insertion and removal. Excessive impact force can exacerbate the deformation or damage of the blade, leading to a decrease in contact performance. Improvements and optimizations are made to address this issue. Utility Model Content

[0003] To address the aforementioned problems, the technical issue this invention aims to resolve is to provide a 10kV integrated primary and secondary intelligent outdoor vacuum circuit breaker.

[0004] The technical solution adopted by this utility model of 10kV primary and secondary integrated intelligent outdoor vacuum circuit breaker includes: a circuit breaker housing, a vacuum interrupter assembly spaced on the circuit breaker housing, a current transformer, an external isolation terminal block, and an isolation blade assembly for opening and closing between the current transformer and the external isolation terminal block. The isolation blade assembly includes a first blade plate, a second blade plate, a pin connecting one end of the first blade plate and the second blade plate to the current transformer, and a blade plate adjusting device. A blade plate contact gap is formed between the first blade plate and the second blade plate for contacting the external isolation terminal block. The blade plate adjusting device includes an adjusting screw, an outer compression pad, an inner limiting pad, an inner buffer spring, and a fastening nut sleeved on the adjusting screw. The inner limiting pad includes a limiting pad body with an inner through hole.

[0005] Both the first and second blades have screw holes and blade contact openings that are transversely connected to the screw holes in their middle portions. The adjusting screw passes through the screw holes and the inner hole of the limiting pad. The main body of the limiting pad is placed at the blade contact gap. The inner buffer spring is sleeved on the outside of the limiting pad body, with one end abutting against the inner side of the first blade and the other end abutting against the inner side of the second blade. The two outer compression pads abut against the outer sides of the first and second blades, respectively. The outer isolation wiring board includes a wiring board mating portion. The wiring board mating portion has a wiring board plug-in portion that is inserted into the blade contact gap. The end of the wiring board plug-in portion has a wiring board reinforcing contact head corresponding to the blade contact opening.

[0006] The inner limiting pad also includes limiting pad guide posts disposed at both ends of the limiting pad body, the limiting pad guide posts being disposed on the screw through holes, and the outer extrusion pad being sleeved on the limiting pad guide posts.

[0007] The width of the limiting pad body is smaller than the width of the contact gap between the blades.

[0008] Both the outer compression pad and the inner limiting pad are made of rubber.

[0009] Both the inner sides of the first blade plate and the inner sides of the second blade plate are provided with inclined guide surfaces at the upper and lower ends of the blade plate contact opening to facilitate the insertion of the reinforcing contact head of the wiring board.

[0010] The inner sides of the first and second blades are provided with blade positioning grooves at the screw holes for positioning the inner buffer spring.

[0011] The advantages of this 10kV integrated primary and secondary intelligent outdoor vacuum circuit breaker are as follows: by setting an outer compression pad, an inner limiting pad, and an inner buffer spring, the contact gap of the blade plate can be flexibly adjusted, which improves the smoothness of the insertion and removal process and reduces the wear of the contact parts of the blade plate and the terminal block. Attached Figure Description

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 This is a structural schematic diagram of the 10kV primary and secondary integrated intelligent outdoor vacuum circuit breaker of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the isolation blade assembly of this utility model;

[0015] Figure 3 This is an exploded view of the blade adjustment device of this utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the inner limiting pad of this utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the first blade of this utility model;

[0018] Figure 6 This is a schematic diagram of the structure of the external isolation junction box of this utility model. Detailed Implementation

[0019] like Figure 1-6 As shown, the 10kV integrated primary and secondary intelligent outdoor vacuum circuit breaker of this utility model includes a circuit breaker housing 1, a vacuum interrupter assembly 2 spaced on the circuit breaker housing 1, a current transformer 5, an external isolation terminal block 4, and an isolation blade assembly 3 for opening and closing between the current transformer 5 and the external isolation terminal block 4. The isolation blade assembly 3 includes a first blade plate 7, a second blade plate 8, a pin 9 connecting one end of the first blade plate 7 and the second blade plate 8 to the current transformer 5, and a blade plate adjusting device 10. A blade contact gap 12 is formed between the first blade 7 and the second blade 8 for contacting the outer isolation terminal block 4. The blade adjustment device 10 includes an adjusting screw 14, an outer compression pad 15 sleeved on the adjusting screw 14, an inner limiting pad 16 and an inner buffer spring 17, and a fastening nut 18. The inner limiting pad 16 includes a limiting pad body 21, and the limiting pad body 21 has a limiting pad inner through hole 22. Both the first blade 7 and the second blade 8 have screw through holes 25 in the middle, and are transversely aligned with the screw through holes 25. The blade contact opening 26 is open, the adjusting screw 14 passes through the screw through hole 25 and the inner through hole 22 of the limiting pad, the limiting pad body 21 is placed at the blade contact gap 12, the inner buffer spring 17 is sleeved on the limiting pad body 21, one end of which abuts against the inner side of the first blade 7 and the other end of which abuts against the inner side of the second blade 8, the two outer compression pads 15 abut against the outer side of the first blade 7 and the outer side of the second blade 8 respectively, the outer isolation wiring plate 4 includes a wiring plate docking part 30, the wiring plate The docking part 30 is provided with a terminal block plug-in part 31 that is inserted into the blade contact gap 12. The end of the terminal block plug-in part 31 is provided with a terminal block reinforced contact head 32 corresponding to the blade contact opening 26. By setting an adjusting screw 14, an outer compression pad 15, an inner limiting pad 16 and an inner buffer spring 17, and cooperating with a fastening nut 18, the blade contact gap 12 can be flexibly adjusted, avoiding the problem of excessive tightness between the traditional isolation blade assembly and the outer isolation terminal block. The blade contact gap can effectively adapt to the terminal block plug-in part, ensuring plug-in stability.

[0020] The inner limiting pad 16 also includes limiting pad guide posts 23 disposed at both ends of the limiting pad body 21. The limiting pad guide posts 23 are inserted through the screw through holes 25. The outer extrusion pad 15 is sleeved on the limiting pad guide posts 23, providing a precise positioning function and avoiding the offset or loosening of the blade contact gap.

[0021] The width of the limiting pad body 21 is smaller than the width of the blade contact gap 12.

[0022] Both the outer compression pad 15 and the inner limiting pad 16 are made of rubber, which has good flexibility and wear resistance.

[0023] Both the inner sides of the first blade plate 7 and the inner sides of the second blade plate 8 are provided with inclined guide surfaces 28 at the upper and lower ends of the blade plate contact opening 26 to facilitate the insertion of the reinforcing contact head 32 of the wiring board. The inclined guide surface design significantly reduces the difficulty of the insertion operation and improves the convenience and efficiency of installation.

[0024] The inner sides of the first blade plate 7 and the second blade plate 8 are provided with blade plate inner positioning grooves 29 at the screw through hole 25 for positioning the inner buffer spring 17, ensuring that the spring force is evenly distributed and improving the smoothness and stability of insertion and removal.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model are included within the protection scope of the present utility model.

Claims

1. A 10kV integrated primary and secondary intelligent outdoor vacuum circuit breaker, comprising a circuit breaker housing (1), a vacuum interrupter assembly (2) spaced on the circuit breaker housing (1), a current transformer (5), an external isolation terminal block (4), and an isolation blade assembly (3) for opening and closing between the current transformer (5) and the external isolation terminal block (4), characterized in that: The isolation knife assembly (3) comprises a first knife plate (7), a second knife plate (8), a pin (9) connecting one end of the first knife plate (7) and the second knife plate (8) with the current transformer (5), a knife plate adjusting device (10), a knife plate contact gap (12) is formed between the first knife plate (7) and the second knife plate (8) for contacting the external isolation terminal board (4), the knife plate adjusting device (10) comprises an adjusting screw (14), an outer extrusion pad (15) sleeved on the adjusting screw (14), an inner limiting pad (16) and an inner buffer spring (17), a fastening nut (18), the inner limiting pad (16) comprises a limiting pad main body (21), and a limiting pad inner perforation (22) is arranged in the limiting pad main body (21); The middle part of the first knife plate (7) and the second knife plate (8) is provided with a screw passing hole (25) and a knife plate contact opening (26) communicating with the screw passing hole (25), the adjusting screw (14) passes through the screw passing hole (25) and the limiting pad inner perforation (22), the limiting pad main body (21) is arranged at the knife plate contact gap (12), the inner buffer spring (17) is sleeved outside the limiting pad main body (21), one end of the inner buffer spring (17) abuts against the inner side of the first knife plate (7), the other end of the inner buffer spring (17) abuts against the inner side of the second knife plate (8), the two outer extrusion pads (15) abut against the outer side of the first knife plate (7) and the outer side of the second knife plate (8) respectively, the external isolation terminal board (4) comprises a terminal board butt joint part (30), the terminal board butt joint part (30) is provided with a terminal board plug-in part (31) inserted into the knife plate contact gap (12), and the terminal board plug-in part (31) is provided with a terminal board reinforced contact head (32) corresponding to the knife plate contact opening (26).

2. The 10kv primary and secondary fusion intelligent outdoor vacuum circuit breaker according to claim 1, characterized in that: The inner limiting pad (16) further comprises limiting pad guide columns (23) arranged at both ends of the limiting pad main body (21), and the limiting pad guide columns (23) pass through the screw passing hole (25).

3. The 10 kv primary and secondary fusion intelligent outdoor vacuum circuit breaker according to claim 1, characterized in that: The width of the limiting pad main body (21) is smaller than the width of the knife plate contact gap (12).

4. The 10 kV primary and secondary fused intelligent outdoor vacuum circuit breaker according to claim 1, characterized in that: The outer extrusion pad (15) and the inner limiting pad (16) are made of rubber material.

5. The 10 kv primary and secondary fusion intelligent outdoor vacuum circuit breaker according to claim 1, characterized in that: The inner side of the first knife plate (7) and the inner side of the second knife plate (8) are provided with inclined guide surfaces (28) at the upper end and the lower end of the knife plate contact opening (26) for facilitating the insertion of the terminal board reinforced contact head (32).

6. The 10 kv primary and secondary fusion intelligent outdoor vacuum circuit breaker according to claim 1, characterized in that: The inner side of the first knife plate (7) and the inner side of the second knife plate (8) are provided with knife plate inner positioning grooves (29) at the screw passing hole (25) for positioning the inner buffer spring (17).

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