Intelligent outdoor high-voltage alternating-current vacuum circuit breaker

Abstract

The utility model relates to the technical field of vacuum circuit breakers, in particular to an intelligent outdoor high-voltage alternating-current vacuum circuit breaker which comprises a vacuum circuit breaker support, a detachable snow blocking assembly is installed above the vacuum circuit breaker support, and a control cavity is fixed to the top of the vacuum circuit breaker support through screws. The top of the control cavity is fixedly provided with a plurality of vacuum arc-extinguishing chambers, and the periphery of each vacuum arc-extinguishing chamber is provided with a shielding assembly. The snow blocking assembly comprises a snow blocking plate of a triangular structure, a plurality of flow guide grooves are formed in the end face of the top of the snow blocking plate, the size of the snow blocking plate is larger than that of the control cavity, the snow blocking assembly further comprises supporting rods fixed to the four corners of the bottom of the snow blocking plate, and the bottoms of the supporting rods are sleeved with fixing lug plates fixed to the periphery of the control cavity. According to the utility model, through the arrangement of the detachable snow blocking assembly, snow can slide down along the diversion trench with a certain gradient, and the snow is prevented from accumulating on the top of the snow blocking plate and crushing the vacuum circuit breaker support.

Description

Technical Field

[0001] This utility model relates to the field of vacuum circuit breaker technology, and in particular to an intelligent outdoor high-voltage AC vacuum circuit breaker. Background Technology

[0002] Outdoor high-voltage AC vacuum circuit breakers are switching devices used in high-voltage power systems, capable of reliably breaking and closing high-voltage AC circuits in outdoor environments. Their core function is to control, protect, and isolate lines and equipment in the power system, ensuring the safe and stable operation of the power grid.

[0003] Current outdoor high-voltage AC vacuum circuit breakers, such as the existing publicly available technical solution (CN221977817U), disclose an outdoor high-voltage AC vacuum circuit breaker that includes a mechanism box. The lower surface of the mechanism box is provided with several buffer structures. The buffer structure includes a housing, a spring, a connecting rod, and a rubber pad. The housing is fixedly installed on the lower surface of the mechanism box. The spring is installed inside the housing. The connecting rod is movably installed on the inner wall of the housing. The connecting rod abuts against the spring. The lower surface of the connecting rod is fixedly installed with a rubber pad.

[0004] When these types of outdoor high-voltage AC vacuum circuit breakers are in harsh environments, such as cold regions, snow will accumulate on top of the vacuum circuit breaker because there is no snow-blocking bracket on the vacuum circuit breaker. It is not easy to remove the snow, and over time, it can cause the bottom bracket to deform, affecting the stability of the outdoor high-voltage AC vacuum circuit breaker during operation. Summary of the Invention

[0005] The purpose of this utility model is to provide an intelligent outdoor high-voltage AC vacuum circuit breaker. Through the setting of a detachable snow-blocking component, snow can slide down along a guide channel with a certain slope, avoiding snow accumulation on the top of the snow-blocking plate and damage to the vacuum circuit breaker bracket, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an intelligent outdoor high-voltage AC vacuum circuit breaker, including a vacuum circuit breaker bracket, a detachable snow shield assembly installed on the top of the vacuum circuit breaker bracket, and a control cavity fixed to the top of the vacuum circuit breaker bracket by screws, with multiple vacuum interrupting chambers fixed to the top of the control cavity, and shielding assemblies arranged around the vacuum interrupting chambers.

[0007] The snow-blocking assembly includes a snow-blocking plate with a triangular structure. The top end face of the snow-blocking plate has multiple guide grooves, and the size of the snow-blocking plate is larger than that of the control cavity.

[0008] Preferably, the snow-blocking assembly further includes support rods fixed to the four corners of the bottom of the snow-blocking plate, and the bottom of the support rods is fitted with fixing ear plates fixed around the control cavity.

[0009] Preferably, the bottom of the support rod passes through the interior of the fixing ear plate, and a fixing screw is provided inside the fixing ear plate. A round hole is provided at the connection between the fixing screw and the support rod. The front and rear ends of the fixing screw extend beyond the end faces of the two sets of fixing ear plates, and a fixing nut is threaded onto the outer side of the fixing screw.

[0010] Preferably, the snow-blocking assembly further includes a movable groove formed on the bottom surface of the snow-blocking plate, and the snow-blocking plate has a hollow structure.

[0011] Preferably, the shielding assembly includes a first shielding net disposed on the front and rear sides of the control cavity, and a second shielding net disposed on the left and right sides of the control cavity, wherein lead blocks are detachably connected to the bottom of the first shielding net and the second shielding net.

[0012] Preferably, the shielding assembly further includes a short take-up shaft rotatably installed inside the snow shield, the short take-up shaft being fixedly connected to the top of the second shielding net, a drive gear being fixedly fixed to the outside of the short take-up shaft, and a driven gear being meshed with one side of the drive gear, and a knob being fixed to the front end of the short take-up shaft.

[0013] Preferably, the shielding assembly further includes a long winding shaft rotatably installed inside the snow shield, the long winding shaft being fixed to the middle of the driven gear and fixedly connected to the top of the first shielding net.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. With the detachable snow-blocking components, snow can slide down the sloped guide channel, preventing snow from accumulating on the top of the snow-blocking plate and damaging the vacuum circuit breaker bracket.

[0016] 2. A set of knobs can drive the short and long take-up shafts to wind up the second and first shielding nets respectively, making it easy to lift the second and first shielding nets, which can play a certain role in blocking dust. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is an overall structural view of the present invention;

[0019] Figure 2This is a bottom view of the structure of the shielding net after it has been rolled up according to this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the first shielding net of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Vacuum circuit breaker bracket; 2. Control chamber; 3. Snow shield assembly; 301. Snow shield; 302. Flow guide groove; 303. Support rod; 304. Movable groove; 305. Fixing nut; 306. Fixing ear plate; 307. Fixing screw; 4. Shielding assembly; 401. First shielding net; 402. Second shielding net; 403. Knob; 404. Short winding shaft; 405. Drive gear; 406. Driven gear; 407. Long winding shaft; 408. Lead block; 5. Vacuum interrupter chamber. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] This utility model provides a technical solution:

[0025] Please see Figures 1 to 2 A smart outdoor high-voltage AC vacuum circuit breaker includes a vacuum circuit breaker bracket 1, a detachable snow shield assembly 3 installed on the top of the vacuum circuit breaker bracket 1, and a control cavity 2 fixed to the top of the vacuum circuit breaker bracket 1 by screws. Multiple vacuum interrupting chambers 5 are fixed to the top of the control cavity 2, and shielding assemblies 4 are arranged around the vacuum interrupting chambers 5.

[0026] The snow-blocking assembly 3 includes a snow-blocking plate 301 with a triangular structure. Multiple guide grooves 302 are provided on the top end face of the snow-blocking plate 301, and the size of the snow-blocking plate 301 is larger than that of the control cavity 2.

[0027] The snow-blocking assembly 3 also includes support rods 303 fixed to the four corners of the bottom of the snow-blocking plate 301. The bottom of the support rods 303 is fitted with fixing ear plates 306 fixed around the control cavity 2. The bottom of the support rods 303 passes through the interior of the fixing ear plates 306, and fixing screws 307 pass through the interior of the fixing ear plates 306. A round hole is opened at the connection between the fixing screws 307 and the support rods 303. The front and rear ends of the fixing screws 307 extend beyond the end faces of the two sets of fixing ear plates 306, and fixing nuts 305 are threadedly connected to the outer side of the fixing screws 307.

[0028] By adopting the above technical solution, when snow falls on the top of the snow baffle 301, it can slide down along the guide channel 302, avoiding snow accumulation on the top of the snow baffle 301 and damaging the vacuum circuit breaker bracket 1. The snow baffle 301 can be inserted into the inside of the fixed ear plate 306 through the support rod 303, and the fixing screw 307 can be passed through the support rod 303 and the fixed ear plate 306, and a fixing nut 305 can be installed at the end to lock the fixing screw 307. Through the set detachable snow baffle component 3, the snow can slide down along the guide channel 302 with a certain slope, avoiding snow accumulation on the top of the snow baffle 301 and damaging the vacuum circuit breaker bracket 1.

[0029] Specifically, such as Figure 3 As shown, the snow-blocking component 3 also includes a movable groove 304 formed on the bottom surface of the snow-blocking plate 301, and the snow-blocking plate 301 has a hollow structure. The shielding component 4 includes a first shielding net 401 disposed on the front and rear sides of the control cavity 2, and a second shielding net 402 disposed on the left and right sides of the control cavity 2. Lead blocks 408 are detachably connected to the bottom of the first shielding net 401 and the second shielding net 402. The first shielding net 401 and the second shielding net 402 pass through the movable groove 304.

[0030] The snow shielding assembly 4 also includes a short take-up shaft 404 rotatably installed inside the snow shield 301. The short take-up shaft 404 is fixedly connected to the top of the second snow shield 402. A drive gear 405 is fixed to the outside of the short take-up shaft 404, and a driven gear 406 is meshed with one side of the drive gear 405. A knob 403 is fixed to the front end of the short take-up shaft 404. The snow shielding assembly 4 also includes a long take-up shaft 407 rotatably installed inside the snow shield 301. The long take-up shaft 407 is fixed to the middle of the driven gear 406, and is fixedly connected to the top of the first snow shield 401. The ends of the short take-up shaft 404 and the long take-up shaft 407 away from the drive gear 405 and the driven gear 406 are installed inside the snow shield 301 by bearings.

[0031] By adopting the above technical solution, a set of knobs 403 can drive the short take-up shaft 404 to rotate, and the driving gear 405 on the short take-up shaft 404 can rotate simultaneously. Under the action of the teeth, the driving gear 405 can drive the driven gear 406 to rotate, and the driven gear 406 can drive the long take-up shaft 407 to rotate. The rotating short take-up shaft 404 and long take-up shaft 407 can respectively wind up the second shielding net 402 and the first shielding net 401, while another set of second shielding nets 402 and first shielding nets 401 are connected by another set of knobs 403 to rotate the long take-up shaft 407. The short take-up spool 404, long take-up spool 407 and other components drive the system. The lead block 408 acts as a counterweight for the second shielding net 402 and the first shielding net 401, preventing them from flying up. The second shielding net 402 and the first shielding net 401 are made of non-woven fabric, which can block dust to a certain extent. In order to improve the stability of the second shielding net 402 and the first shielding net 401, a magnet is added to the side of the lead block 408 near the control cavity 2, which can be attracted to the iron plate of the control cavity 2.

[0032] Working Principle: The control chamber 2 is also equipped with the contact system (moving and stationary contacts), operating mechanism, and intelligent protection device found in existing intelligent outdoor high-voltage AC vacuum circuit breakers. Based on the working principle of existing intelligent outdoor high-voltage AC vacuum circuit breakers, with the vacuum interrupter 5 as the core, when the circuit is operating normally, the contacts are closed and current flows; when a fault occurs in the circuit, such as overload or short circuit, the intelligent protection device issues a tripping command, and the operating mechanism drives the moving contact to quickly separate from the stationary contact, generating an arc between the contacts. Because the vacuum interrupter 5 is a high-vacuum environment, the electrons and ions in the arc cannot collide with gas molecules to maintain the arc, and the arc will quickly extinguish, thus breaking the circuit. The snow baffle 301 can be supported by... The rod 303 is inserted inside the fixed ear plate 306, and the fixing screw 307 passes through the support rod 303 and the fixed ear plate 306. The fixing nut 305 is installed at the end and the fixing screw 307 is locked. When snow falls on the top of the snow deflector 301, it can slide down along the guide groove 302 to prevent snow from accumulating on the top of the snow deflector 301. The knob 403 can drive the short take-up shaft 404 to rotate, and the drive gear 405 on the short take-up shaft 404 can rotate at the same time. Under the action of the teeth, the drive gear 405 can drive the driven gear 406 to rotate, and the driven gear 406 can drive the long take-up shaft 407 to rotate. The rotating short take-up shaft 404 and long take-up shaft 407 can respectively wind up the second shielding net 402 and the first shielding net 401.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An intelligent outdoor high-voltage AC vacuum circuit breaker, comprising a vacuum circuit breaker bracket (1), characterized in that: A detachable snow shield assembly (3) is installed above the vacuum circuit breaker bracket (1), and a control cavity (2) is fixed to the top of the vacuum circuit breaker bracket (1) by screws. Multiple vacuum interrupting chambers (5) are fixed to the top of the control cavity (2), and shielding assemblies (4) are provided around the vacuum interrupting chambers (5). The snow-blocking assembly (3) includes a snow-blocking plate (301) with a triangular structure. The top end face of the snow-blocking plate (301) is provided with multiple guide grooves (302), and the size of the snow-blocking plate (301) is larger than that of the control cavity (2).

2. The intelligent outdoor high-voltage AC vacuum circuit breaker according to claim 1, characterized in that: The snow-blocking assembly (3) also includes support rods (303) fixed to the four corners of the bottom of the snow-blocking plate (301), and the bottom of the support rods (303) is fitted with fixed ear plates (306) fixed around the control cavity (2).

3. The intelligent outdoor high-voltage AC vacuum circuit breaker according to claim 2, characterized in that: The bottom of the support rod (303) passes through the interior of the fixed ear plate (306), and a fixing screw (307) is provided inside the fixed ear plate (306). A round hole is provided at the connection between the fixing screw (307) and the support rod (303). The front and rear ends of the fixing screw (307) extend beyond the end faces of the two sets of fixed ear plates (306), and a fixing nut (305) is threaded on the outer side of the fixing screw (307).

4. The intelligent outdoor high-voltage AC vacuum circuit breaker according to claim 3, characterized in that: The snow-blocking component (3) also includes an active groove (304) formed on the bottom surface of the snow-blocking plate (301), and the snow-blocking plate (301) is a hollow structure.

5. The intelligent outdoor high-voltage AC vacuum circuit breaker according to claim 4, characterized in that: The shielding assembly (4) includes a first shielding net (401) disposed on the front and rear sides of the control cavity (2) and a second shielding net (402) disposed on the left and right sides of the control cavity (2). Lead blocks (408) are detachably connected to the bottom of the first shielding net (401) and the second shielding net (402).

6. The intelligent outdoor high-voltage AC vacuum circuit breaker according to claim 5, characterized in that: The shielding assembly (4) also includes a short take-up shaft (404) rotatably installed inside the snow shield (301). The short take-up shaft (404) is fixedly connected to the top of the second shielding net (402). A drive gear (405) is fixed to the outside of the short take-up shaft (404), and a driven gear (406) is meshed with one side of the drive gear (405). A knob (403) is fixed to the front end of the short take-up shaft (404).

7. The intelligent outdoor high-voltage AC vacuum circuit breaker according to claim 6, characterized in that: The shielding assembly (4) also includes a long winding shaft (407) rotatably installed inside the snow shield (301), the long winding shaft (407) being fixed to the middle of the driven gear (406), and the long winding shaft (407) being fixedly connected to the top of the first shielding net (401).

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