Vacuum arc extinguishing device for environment-friendly gas insulation ring main unit

Abstract

The utility model relates to the technical field of vacuum arc-extinguishing devices, in particular to a vacuum arc-extinguishing device for an environment-friendly gas insulation ring main unit, which comprises a main body, the main body comprises a shell, a movable end cover plate is mounted on the inner wall of the shell, a first arc-extinguishing mechanism is mounted in the movable end cover plate, and the first arc-extinguishing mechanism comprises a movable conducting rod. The tail end of the movable conducting rod is fixedly connected with a movable contact seat, the inner wall of the movable contact seat is fixedly connected with a reinforcing rib, the surface of the movable contact seat is fixedly connected with a fixed block, the inner wall of the fixed block is provided with a first contact, the lower surface of the first contact is movably connected with a movable block, and the upper surface of the movable block is provided with a second groove; the lower surface of the fixed block is fixedly connected with a convex block, and the surface of the moving contact seat is movably connected with a second elastic ring. According to the utility model, the contact can be easily replaced and installed, the use of the device is more convenient, and the use cost of the device is reduced.

Description

Technical Field

[0001] The utility model relates to the field of vacuum arc extinguishing devices, in particular to a vacuum arc extinguishing device for an environmentally friendly gas-insulated ring network cabinet. Background Art

[0002] The vacuum arc extinguishing device, also known as the vacuum switch tube, is the core component of medium and high voltage power switches. Its main function is to use the excellent insulation of the vacuum inside the tube to quickly extinguish the arc and suppress the current after the medium and high voltage circuit is cut off from the power supply, so as to avoid accidents and unexpected events. It is mainly used in power transmission and distribution control systems, and is also used in power distribution systems such as metallurgy, mining, petroleum, chemical industry, railways, broadcasting, communications, and industrial high-frequency heating.

[0003] When using the common vacuum arc extinguishing devices on the market, a very high electric field strength is formed at the moment of separation of the moving and static contacts, resulting in extremely strong emission and gap breakdown, generating a vacuum arc. The arc will be evenly distributed on the contact surface, and long-term use will cause corrosion to the contacts. Since the contacts are directly fixed to the surface of the contact seat, the entire arc extinguishing mechanism needs to be replaced when replaced, which increases the cost of use. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a vacuum arc extinguishing device for an environmentally friendly gas-insulated ring network cabinet.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a vacuum arc extinguishing device for an environmentally friendly gas insulated ring network cabinet, comprising a main body, the main body comprising an outer shell, a moving end cover plate is installed on the inner wall of the outer shell, a first arc extinguishing mechanism is installed inside the moving end cover plate, the first arc extinguishing mechanism comprises a moving conductive rod, the end of the moving conductive rod is fixedly connected to a moving contact seat, the inner wall of the moving contact seat is fixedly connected to a reinforcing rib, the surface of the moving contact seat is fixedly connected to a fixed block, the inner wall of the fixed block is installed with a first contact, the lower surface of the first contact is movably connected to a moving block, the upper surface of the moving block is provided with a second groove, the lower surface of the fixed block is fixedly connected to a protrusion, and the surface of the moving contact seat is movably connected to a second elastic ring.

[0006] As a further description of the above technical solution:

[0007] A sealing mechanism is installed on the upper surface of the movable end cover plate, and the sealing mechanism includes a first connecting ring, the lower surface of the first connecting ring is fixedly connected to the upper surface of the movable end cover plate, and the inner wall of the outer shell is fixedly connected to a second connecting ring, and the first connecting ring is located inside the second connecting ring.

[0008] As a further description of the above technical solution:

[0009] A first groove is formed on the right side surface of the first connecting ring, a first elastic ring is installed on the inner wall of the first groove, a movable ring is fixedly connected to the inner wall of the first elastic ring, a sealing block is fixedly connected to the inner wall of the second connecting ring, and one end of the movable ring is located inside the sealing block.

[0010] As a further description of the above technical solution:

[0011] A proximal conductive block is fixedly connected to the inner wall of the shell, and the proximal conductive block is located above the movable end cover plate. A first through hole is opened on the surface of the movable end cover plate, and the movable conductive rod passes through the first through hole.

[0012] As a further description of the above technical solution:

[0013] A second arc extinguishing mechanism is installed on the lower surface of the proximal conductive block. The second arc extinguishing mechanism comprises a static end conductive rod, the end of the static end conductive rod is fixedly connected to a static contact seat, and a second contact is installed inside the static contact seat.

[0014] As a further description of the above technical solution:

[0015] A shielding cylinder is fixedly connected to the inner wall of the shell, the second contact is located inside the shielding cylinder, and a bellows is fixedly connected to the lower surface of the moving contact seat.

[0016] The utility model has the following beneficial effects:

[0017] 1. Compared with the prior art, the vacuum arc extinguishing device for an environmentally friendly gas insulated ring network cabinet, through a moving block, a convex block, and a second elastic ring, in use, the first contact is placed in a fixed block fixed on the surface of the moving contact seat, and the moving block movably connected to the lower surface of the moving contact seat is pushed outward, so that the convex block fixed on the lower surface of the fixed block enters into a second groove opened on the surface of the moving block, and at this time, the second elastic ring is put on the surface of the moving contact seat, so that the second elastic ring is against the gap between the moving block and the moving contact seat, and when the contact needs to be replaced, the second elastic ring can be removed first, and then the moving block can be moved inward , the first contact can be removed and replaced. Compared with conventional devices, during use, due to the formation of extremely high electric field strength at the moment of separation of the moving and static contacts, extremely strong emission and gap breakdown are caused, and a vacuum arc is generated. The arc will be evenly distributed on the contact surface, and long-term use will cause corrosion to the contacts. Since the contacts are directly fixed to the surface of the contact seat, the entire arc extinguishing mechanism needs to be replaced when replaced, which increases the cost of use. The device can easily replace and install the contacts during use, which is more convenient for the use of the device and reduces the cost of the device.

[0018] 2. Compared with the prior art, this vacuum arc extinguishing device for an environmentally friendly gas insulated ring network cabinet, through a first connecting ring, a sealing block, and a movable ring, during use, the movable end cover plate is placed in the bottom of the outer shell, so that the first connecting ring fixed on the upper surface of the movable end cover plate enters into the second connecting ring fixed on the inner wall of the outer shell, the sealing block fixed on the inner wall of the second connecting ring is in contact with the inner wall of the first connecting ring, and the first elastic ring inside the first connecting ring pushes one end of the movable ring fixed on the inner wall of the first elastic ring into the interior of the sealing block, so that the connection between the movable end cover plate and the outer shell is tighter, no leakage occurs, and the internal vacuum state is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a vacuum arc extinguishing device for an environmentally friendly gas insulated ring main unit proposed by the utility model;

[0020] Figure 2 This is a cross-sectional view of a vacuum arc extinguishing device for an environmentally friendly gas-insulated ring main unit proposed by the utility model;

[0021] Figure 3 The utility model proposes a vacuum arc extinguishing device for an environmentally friendly gas insulated ring network cabinet. Figure 2 A magnified view of the structure at A;

[0022] Figure 4 The utility model proposes a vacuum arc extinguishing device for an environmentally friendly gas insulated ring network cabinet. Figure 2 Enlarged view of the structure at B.

[0023] Legend:

[0024] 1. Main body; 101. Shell; 102. Proximal conductive block; 103. Moving end cover plate; 104. First through hole; 2. Sealing mechanism; 201. First connecting ring; 202. First groove; 203. First elastic ring; 204. Moving ring; 205. Sealing block; 206. Second connecting ring; 3. First arc extinguishing mechanism; 301. Moving conductive rod; 302. Moving contact seat; 303. Reinforcing rib; 304. Second elastic ring; 305. Fixed block; 306. First contact; 307. Moving block; 308. Second groove; 309. Protrusion; 4. Second arc extinguishing mechanism; 401. Static end conductive rod; 402. Static contact seat; 403. Second contact; 5. Shielding tube; 6. Bellows. DETAILED DESCRIPTION

[0025] Reference Figure 1-4The utility model provides a vacuum arc extinguishing device for an environmentally friendly gas insulated ring network cabinet: comprising a main body 1, the main body 1 comprising a shell 101, a moving end cover plate 103 is installed on the inner wall of the shell 101, a first arc extinguishing mechanism 3 is installed inside the moving end cover plate 103, the first arc extinguishing mechanism 3 comprises a moving conductive rod 301, a moving contact seat 302 is fixedly connected to the end of the moving conductive rod 301, a reinforcing rib 303 is fixedly connected to the inner wall of the moving contact seat 302, a fixed block 305 is fixedly connected to the surface of the moving contact seat 302, a first contact 306 is installed on the inner wall of the fixed block 305, a moving block 307 is movably connected to the lower surface of the first contact 306, a second groove 308 is provided on the upper surface of the moving block 307, a protrusion 309 is fixedly connected to the lower surface of the fixed block 305, and a moving contact seat 302 is fixedly connected to the surface of the moving contact seat 302. The second elastic ring 304 is movably connected to the surface, the first contact 306 is placed in the fixed block 305 fixed on the surface of the moving contact seat 302, and the moving block 307 movably connected to the lower surface of the moving contact seat 302 is pushed outward, so that the protrusion 309 fixed on the lower surface of the fixed block 305 enters the second groove 308 opened on the surface of the moving block 307. At this time, the second elastic ring 304 is put on the surface of the moving contact seat 302, so that the second elastic ring 304 is against the gap between the moving block 307 and the moving contact seat 302. When the contact needs to be replaced, the second elastic ring 304 can be removed first, and then the moving block 307 is moved inward, and the first contact 306 can be removed for replacement. During use, the contacts can be easily replaced and installed, which makes the use of the device more convenient.

[0026] The upper surface of the movable end cover plate 103 is provided with a sealing mechanism 2, and the sealing mechanism 2 includes a first connecting ring 201, the lower surface of the first connecting ring 201 is fixedly connected to the upper surface of the movable end cover plate 103, and the inner wall of the housing 101 is fixedly connected with a second connecting ring 206, the first connecting ring 201 is located inside the second connecting ring 206, and the right side surface of the first connecting ring 201 is provided with a first groove 202, and the inner wall of the first groove 202 is provided with a first elastic ring 203, and the first elastic ring 206 is fixedly connected to the inner wall of the housing 101. The inner wall of the movable end cover plate 103 is fixedly connected with a movable ring 204, the inner wall of the second connecting ring 206 is fixedly connected with a sealing block 205, one end of the movable ring 204 is located inside the sealing block 205, the movable end cover plate 103 is placed in the bottom of the housing 101, so that the first connecting ring 201 fixed on the upper surface of the movable end cover plate 103 enters into the second connecting ring 206 fixed on the inner wall of the housing 101, and the sealing block 205 fixed on the inner wall of the second connecting ring 206 is in contact with the inner wall of the first connecting ring 201, and the second connecting ring 206 is fixed to the inner wall of the second connecting ring 206. The first elastic ring 203 inside the connecting ring 201 pushes one end of the moving ring 204 fixed on the inner wall of the first elastic ring 203 into the interior of the sealing block 205, so that the connection between the moving end cover plate 103 and the housing 101 is tighter and no leakage occurs, thereby ensuring the internal vacuum state. The inner wall of the housing 101 is fixedly connected with the proximal conductive block 102, which is located above the moving end cover plate 103. The surface of the moving end cover plate 103 is provided with a first through hole 104, and the moving conductive block 102 is provided with a first through hole 104. The electric pole 301 passes through the first through hole 104, and a second arc extinguishing mechanism 4 is installed on the lower surface of the proximal conductive block 102. The second arc extinguishing mechanism 4 includes a static end conductive pole 401, and the end of the static end conductive pole 401 is fixedly connected to a static contact seat 402, and a second contact 403 is installed inside the static contact seat 402. A shielding tube 5 is fixedly connected to the inner wall of the outer shell 101, and the second contact 403 is located inside the shielding tube 5. The lower surface of the moving contact seat 302 is fixedly connected to a bellows 6.

[0027] Working principle: put the first contact 306 into the fixed block 305 fixed on the surface of the moving contact seat 302, push the movable block 307 movably connected to the lower surface of the moving contact seat 302 outward, so that the protrusion 309 fixed on the lower surface of the fixed block 305 enters the second groove 308 opened on the surface of the movable block 307, and then put the second elastic ring 304 on the surface of the moving contact seat 302, so that the second elastic ring 304 is against the gap between the movable block 307 and the moving contact seat 302. When the contact needs to be replaced, the second elastic ring 304 can be removed first, and then the movable block 307 can be moved inward, and the first contact 306 can be removed for replacement. The contacts can be easily replaced and installed during the process, which makes the use of the device more convenient. The movable end cover plate 103 is placed at the bottom of the housing 101, so that the first connecting ring 201 fixed on the upper surface of the movable end cover plate 103 enters into the second connecting ring 206 fixed on the inner wall of the housing 101, and the sealing block 205 fixed on the inner wall of the second connecting ring 206 is in contact with the inner wall of the first connecting ring 201. The first elastic ring 203 inside the first connecting ring 201 pushes one end of the moving ring 204 fixed on the inner wall of the first elastic ring 203 into the interior of the sealing block 205, so that the connection between the movable end cover plate 103 and the housing 101 is tighter, no leakage occurs, and the internal vacuum state is guaranteed.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vacuum arc extinguishing device for an environmentally friendly gas-insulated ring main unit, comprising a main body (1), characterized in that: The main body (1) comprises a shell (101), a movable end cover plate (103) is mounted on the inner wall of the shell (101), a first arc extinguishing mechanism (3) is mounted inside the movable end cover plate (103), the first arc extinguishing mechanism (3) comprises a movable conductive rod (301), a movable contact seat (302) is fixedly connected to the end of the movable conductive rod (301), a reinforcing rib (303) is fixedly connected to the inner wall of the movable contact seat (302), a fixed block (305) is fixedly connected to the surface of the movable contact seat (302), a first contact (306) is mounted on the inner wall of the fixed block (305), a movable block (307) is movably connected to the lower surface of the first contact (306), a second groove (308) is provided on the upper surface of the movable block (307), a protrusion (309) is fixedly connected to the lower surface of the fixed block (305), and a second elastic ring (304) is movably connected to the surface of the movable contact seat (302).

2. The vacuum arc extinguishing device for an environmentally friendly gas insulated ring main unit according to claim 1, characterized in that: A sealing mechanism (2) is installed on the upper surface of the movable end cover plate (103), the sealing mechanism (2) comprising a first connecting ring (201), the lower surface of the first connecting ring (201) being fixedly connected to the upper surface of the movable end cover plate (103), and a second connecting ring (206) being fixedly connected to the inner wall of the housing (101), the first connecting ring (201) being located inside the second connecting ring (206).

3. The vacuum arc extinguishing device for an environmentally friendly gas insulated ring main unit according to claim 2, characterized in that: A first groove (202) is provided on the right side surface of the first connecting ring (201); a first elastic ring (203) is installed on the inner wall of the first groove (202); a moving ring (204) is fixedly connected to the inner wall of the first elastic ring (203); a sealing block (205) is fixedly connected to the inner wall of the second connecting ring (206); and one end of the moving ring (204) is located inside the sealing block (205).

4. The vacuum arc extinguishing device for an environmentally friendly gas insulated ring main unit according to claim 1, characterized in that: A proximal conductive block (102) is fixedly connected to the inner wall of the housing (101); the proximal conductive block (102) is located above the movable end cover plate (103); a first through hole (104) is provided on the surface of the movable end cover plate (103); and the movable conductive rod (301) passes through the first through hole (104).

5. The vacuum arc extinguishing device for an environmentally friendly gas insulated ring main unit according to claim 4, characterized in that: A second arc extinguishing mechanism (4) is installed on the lower surface of the proximal conductive block (102), and the second arc extinguishing mechanism (4) comprises a static end conductive rod (401), the end of the static end conductive rod (401) is fixedly connected to a static contact seat (402), and a second contact (403) is installed inside the static contact seat (402).

6. The vacuum arc extinguishing device for an environmentally friendly gas insulated ring main unit according to claim 5, characterized in that: A shielding cylinder (5) is fixedly connected to the inner wall of the housing (101), the second contact (403) is located inside the shielding cylinder (5), and a bellows (6) is fixedly connected to the lower surface of the moving contact seat (302).

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