Sealed vacuum circuit breaker convenient to overhaul and maintain

Abstract

The invention relates to a sealed vacuum circuit breaker convenient to overhaul and maintain, which comprises a conductive loop, an insulation system, a sealing element and a shell, and is characterized in that the shell comprises a cabinet body, a front door, a rear door, a left side door and a right side door, and the front surface, the back surface and the two opposite side surfaces of the cabinet body are respectively provided with an access hole; the front door and the rear door are movably hinged to the front side and the rear side of the cabinet body respectively. The conductive loop part of the vacuum circuit breaker is integrally accommodated in the cabinet body, and the cabinet body is provided with the front door, the rear door, the left side door and the right side door, so that the vacuum circuit breaker is convenient for workers to overhaul and maintain in the installation and use process; in addition, the front door, the rear door, the left side door and the right side door are in sealed connection with the cabinet body through rubber inflatable sealing rings, so that the vacuum circuit breaker has good waterproof and dustproof capabilities in the installation and use process, and the use safety of the vacuum circuit breaker is improved.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum circuit breakers, in particular to a sealed vacuum circuit breaker which is convenient for inspection and maintenance. Background Art

[0002] The main structure of high-voltage circuit breakers can be roughly divided into: current guide part, arc extinguishing part, insulation part, and operating mechanism part. The main types of high-voltage switches are divided into: oil circuit breakers, air circuit breakers, vacuum circuit breakers, sulfur hexafluoride circuit breakers, solid gas circuit breakers, and magnetic blowout circuit breakers according to the arc extinguishing medium. Among them, the contacts of vacuum circuit breakers are sealed in a high vacuum arc extinguishing chamber, and the high insulation performance of the vacuum is used to extinguish the arc.

[0003] Common high-voltage vacuum circuit breakers in the prior art include Figure 1 The above mentioned includes a conductive circuit, an insulation system, a seal and a housing. However, the housing is generally divided into two parts, which respectively contain the control part and the arc extinguishing part in the conductive circuit, and the smaller housing is generally fixed to the side of the larger housing by bolts and other fasteners, making it difficult to inspect and maintain the electrical components contained therein. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] The present invention provides a sealed vacuum circuit breaker which is convenient for inspection and maintenance, and solves the problems raised in the background technology of the market.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sealed vacuum circuit breaker that is easy to inspect and maintain, comprising a conductive circuit, an insulation system, a seal and a shell, the shell comprising a cabinet, a front door, a rear door, a left door and a right door, the front, back and two opposite sides of the cabinet are all formed with inspection openings, the front door and the rear door are respectively movably hinged on the front and rear sides of the cabinet, and the front door and the rear door respectively cover the inspection openings on the front and back of the cabinet; the left door and the right door are respectively movably hinged on the left and right sides of the cabinet, and the left door and the right door respectively cover the inspection openings on the opposite sides of the cabinet, and the front door, the rear door, the left door and the right door are all sealed and connected to the cabinet by rubber inflatable sealing rings.

[0008] Preferably, the front door, the rear door, the left door and the right door are all provided with door lock structures, so that the front door, the rear door, the left door and the right door are connected to the cabinet in an openable and closable manner.

[0009] In a further preferred embodiment, the cabinet is configured as a stainless steel spray-molded cabinet structure.

[0010] It is further preferred that at least two bottom brackets are further included, and the at least two bottom brackets are symmetrically installed and fixed on two opposite sides of the bottom of the cabinet, and at least one lifting ring is also arranged between the two bottom brackets, and the lifting ring is installed below the cabinet.

[0011] In a further preferred embodiment, a group of insulating sleeves are further included, wherein the insulating sleeves are fixedly connected to the top of the cabinet and sealed to the cabinet, and the conductive circuit is formed by connecting the inlet and outlet conductive copper bars, conductive clamps, soft links and vacuum arc extinguishing chambers, and the inlet and outlet conductive copper bars pass through the insulating sleeves, and the inlet and outlet conductive copper bars and the insulating sleeves are sealed and connected with sealing rings.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the present invention provides a sealed vacuum circuit breaker that is easy to inspect and maintain, and has the following beneficial effects:

[0014] In the present invention, the conductive circuit part of the vacuum circuit breaker is integrally accommodated in the cabinet, and the cabinet is provided with a front door, a rear door, a left door and a right door, so that the vacuum circuit breaker is convenient for workers to inspect and maintain during installation and use; in addition, the front door, the rear door, the left door and the right door are sealed and connected with the cabinet by a rubber inflatable sealing ring, so that the vacuum circuit breaker has good waterproof and dustproof capabilities during installation and use, thereby improving the safety of the vacuum circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a vacuum circuit breaker in the prior art;

[0016] Figure 2 A front view of a sealed vacuum circuit breaker for easy maintenance according to an embodiment of the present application;

[0017] Figure 3 for Figure 2 Rear view of the sealed vacuum circuit breaker for easy maintenance;

[0018] Figure 4 for Figure 2 Left view of the sealed vacuum circuit breaker for easy maintenance;

[0019] Figure 5 for Figure 2 Right view of the sealed vacuum circuit breaker for easy maintenance;

[0020] Figure 6 for Figure 2 Top view of the sealed vacuum circuit breaker for easy inspection and maintenance.

[0021] In the figure: 10, cabinet body; 20, bottom bracket; 30, front door; 40, rear door; 50, left door; 60, right door; 70, insulating sleeve. DETAILED DESCRIPTION

[0022] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0023] See also Figures 2 to 6 A sealed vacuum circuit breaker that is easy to inspect and maintain includes a conductive circuit, an insulation system, a seal and a housing. The housing includes a cabinet 10, a front door 30, a rear door 40, a left door 50 and a right door 60. The cabinet 10 is relatively Figure 1 The difference between the vacuum circuit breaker housing and the prior art is that the length of the cabinet 10 is extended, and the conductive circuit is contained therein as a whole; and the front, back and opposite sides of the cabinet 10 are all formed with inspection ports. The front door 30 and the rear door 40 are respectively movably hinged on the front and rear sides of the cabinet 10, and the front door 30 and the rear door 40 cover the inspection ports on the front and back of the cabinet 10 respectively; the left door 50 and the right door 60 are respectively movably hinged on the left and right sides of the cabinet 10, and the left door 50 and the right door 60 cover the inspection ports on the opposite sides of the cabinet 10 respectively. The front door 30, the rear door 40, the left door 50 and the right door 60 are all installed with a door lock structure, so that the front door 30, the rear door 40, the left door 50 and the right door 60 are connected to the cabinet 10 in an openable and closable manner. During the installation and use of the vacuum circuit breaker, the staff can open the left door 50 or the right door 60 for inspection and maintenance. When the front door 30 , the rear door 40 , the left door 50 and the right door 60 are in a closed state, the gaps between the front door 30 , the rear door 40 , the left door 50 and the right door 60 and the cabinet 10 may be sealed by rubber inflatable sealing rings provided between the front door 30 , the rear door 40 , the left door 50 and the right door 60 and the cabinet 10 .

[0024] In this embodiment, the cabinet 10 may adopt a stainless steel spray-coated cabinet structure to increase its service life when installed outdoors.

[0025] In this embodiment, the vacuum circuit breaker further comprises at least two bottom brackets 20, which are symmetrically mounted and fixed on two opposite sides of the bottom of the cabinet 10. The bottom brackets 20 are used to assist the installation of the vacuum circuit breaker outdoors. In addition, at least one lifting ring is provided between the two bottom brackets 20, and the lifting ring is installed below the cabinet 10. The lifting ring is used to assist the lifting of the vacuum circuit breaker outdoors.

[0026] In this embodiment, the vacuum circuit breaker also includes a set of insulating sleeves 70, which are fixedly connected to the top of the cabinet 10 and sealed to the cabinet 10, the inlet and outlet conductive copper bars pass through the insulating sleeves 70, and the inlet and outlet conductive copper bars and the insulating sleeves 70 are sealed with sealing rings.

[0027] In this embodiment, the conductive circuit is formed by connecting the inlet and outlet conductive copper bars, conductive clamps, flexible connections and vacuum interrupter chambers.

[0028] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which will not be described one by one here. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A sealed vacuum circuit breaker that is easy to inspect and maintain, comprising a conductive circuit, an insulation system, a seal and a housing, characterized in that: The shell comprises a cabinet (10), a front door (30), a rear door (40), a left door (50) and a right door (60); the front, rear and two opposite side surfaces of the cabinet (10) are all formed with inspection openings; the front door (30) and the rear door (40) are respectively movably hinged on the front and rear sides of the cabinet (10), and the front door (30) and the rear door (40) respectively cover the inspection openings on the front and rear sides of the cabinet (10); the left door (50) and the right door (60) are respectively movably hinged on the left and right sides of the cabinet (10), and the left door (50) and the right door (60) respectively cover the inspection openings on the opposite sides of the cabinet (10); the front door (30), the rear door (40), the left door (50) and the right door (60) are all sealed and connected to the cabinet (10) by rubber inflatable sealing rings.

2. A sealed vacuum circuit breaker that is easy to inspect and maintain according to claim 1, characterized in that: The front door (30), the rear door (40), the left door (50) and the right door (60) are all provided with door lock structures, so that the front door (30), the rear door (40), the left door (50) and the right door (60) are connected to the cabinet (10) in an openable and closable manner.

3. A sealed vacuum circuit breaker that is easy to inspect and maintain according to claim 1 or 2, characterized in that: The cabinet (10) is configured as a stainless steel spray-coated cabinet structure.

4. A sealed vacuum circuit breaker that is easy to inspect and maintain according to claim 1, characterized in that: It also comprises at least two bottom brackets (20), wherein the at least two bottom brackets (20) are symmetrically installed and fixed on two opposite sides of the bottom of the cabinet (10).

5. A sealed vacuum circuit breaker convenient for inspection and maintenance according to claim 4, characterized in that: At least one lifting ring is also provided between the two bottom brackets (20), and the lifting ring is installed below the cabinet (10).

6. A sealed vacuum circuit breaker convenient for inspection and maintenance according to claim 1, characterized in that: It also includes a group of insulating sleeves (70), the insulating sleeves (70) are fixedly connected to the top of the cabinet (10) and are sealed to the cabinet (10), the conductive circuit is formed by connecting the inlet and outlet conductive copper bars, conductive clamps, soft connections and vacuum arc extinguishing chambers, the inlet and outlet conductive copper bars pass through the insulating sleeves (70), and the inlet and outlet conductive copper bars and the insulating sleeves (70) are sealed to each other using a sealing ring.

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