Gas tank of gas-insulated switchgear

Abstract

The utility model relates to the field of gas insulated switch devices, in particular to a gas tank of a gas-insulated switchgear. The gas box comprises a box body, the box body comprises a top plate, a left sealing plate and a right sealing plate, the top of the left sealing plate and the top of the right sealing plate are provided with protruding parts which extend upwards and protrude out of the top plate, and the protruding parts are provided with connecting holes used for connecting adjacent gas boxes to achieve cabinet combination. According to the gas tank of the gas-insulated switchgear, the problem caused by deformation of the gas tank and the cabinet combination connecting plate due to welding is avoided, and the cabinet combination assembly precision is enhanced. In addition, the gas tank of the gas-insulated switchgear is simple in structure, reliable in work, convenient to maintain, low in cost and suitable for being popularized and used in a large range.

Description

Technical Field

[0001] This utility model relates to the field of gas-insulated switchgear, and more particularly to a gas-filled switchgear gas box. Background Technology

[0002] Gas-insulated switchgear (GES) has advantages such as strong environmental adaptability and long maintenance cycles, and is widely used in various scenarios in power systems. When using GES, multiple switchgear units need to be connected in parallel to form a large switchgear. Existing GES gas boxes generally include sealing plates in six directions: top, bottom, left, right, front, and rear. The top, bottom, left, right, and rear sealing plates are independent individual plates. The front sealing plate includes a front sealing plate, a lower front sealing plate extending horizontally backward from the lower end of the front sealing plate, and a terminal sealing plate extending vertically downward from the rear end of the lower front sealing plate. All sealing plates are welded sequentially into a sealed unit. Due to the large number of welds, the welding efficiency is low, and the overall strength of the gas box is not high.

[0003] To address the problems of the prior art, utility model patent CN219874776U discloses an inflatable cabinet, including a gas box body. The gas box body is composed of a panel and sealing plates in the "left," "right," and "rear" directions welded together. The panel is a front cover plate, which is a bent plate formed by bending a long plate. This bent plate replaces the sealing plates in the "upper," "lower," and "front" directions of the traditional gas box, resulting in fewer welds, higher welding efficiency, and higher overall strength of the gas box. Furthermore, a bent plate (i.e., a cabinet-joining connecting plate) is connected above the gas box of the inflatable cabinet, and the cabinet-joining connecting plate has joining holes for convenient cabinet joining. However, the cabinet-joining connecting plate of this utility model is fixed to the gas box by welding, which easily leads to deformation of the gas box and the cabinet-joining connecting plate, hindering subsequent cabinet joining assembly. Utility Model Content

[0004] The purpose of this utility model is to provide an air box for gas-filled cabinets to solve the problem that when gas-filled cabinets are combined, the welding of the combining connecting plate to the air box causes deformation of the air box and the combining connecting plate, which is not conducive to subsequent assembly of the combined cabinets.

[0005] This utility model provides an air box for an inflatable cabinet. The air box includes a box body, which includes a top plate and left and right sealing plates. The top of the left and right sealing plates has a protruding part that extends upward and protrudes from the top plate. The protruding part is provided with a connection hole for connecting adjacent air boxes to realize the cabinet connection.

[0006] Furthermore, the protruding portion is provided with a lifting hole.

[0007] Furthermore, the top plate is provided with reinforcing ribs.

[0008] Furthermore, there are multiple reinforcing ribs, which are divided into two parts: one part is located on the upper side of the top plate, and the other part is located on the lower side of the top plate. The reinforcing ribs on the upper and lower sides are distributed at intervals in the front-back direction.

[0009] Furthermore, the two ends of the reinforcing ribs located on the upper side of the top plate are fixedly connected to the corresponding protruding parts.

[0010] Furthermore, the two ends of the reinforcing rib located on the underside of the top plate are fixedly connected to the left and right sealing plates.

[0011] Preferably, both the left and right sealing plates are provided with recesses, and the recesses are provided with busbar through holes.

[0012] Furthermore, reinforcing ribs are provided on both the left and right end plates.

[0013] Preferably, the reinforcing ribs on the left and right sealing plates are compression ribs.

[0014] Preferably, the housing includes a front cover plate and a rear cover plate. The front cover plate is a bent part. The front cover plate includes a top plate, a front cover plate bent downward at the front end of the top plate, a front lower cover plate bent backward at the lower end of the front cover plate, a terminal cover plate bent downward at the rear end of the front lower cover plate, and a bottom plate bent backward at the lower end of the terminal cover plate.

[0015] This utility model is an invention with modified elements, providing a gas-filled cabinet gas box. The gas box includes a top plate and left and right sealing plates. The top of the left and right sealing plates has upward-extending protrusions that extend beyond the top plate. These protrusions have connection holes for connecting adjacent gas boxes to achieve parallel assembly. This utility model replaces the parallel assembly connecting plate welded to the top plate in the prior art with the upward-extending protrusions of the top of the left and right sealing plates, avoiding the problem of deformation of the gas box and parallel assembly plates caused by welding, and improving the accuracy of parallel assembly. Furthermore, the gas-filled cabinet gas box of this utility model has a simple structure, is easy to manufacture, and has low cost, making it suitable for widespread use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the gas box structure of the gas-filled cabinet of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the gas box of the gas-filled cabinet of this utility model;

[0018] Figure 3 This is a schematic diagram of the front cover plate structure of the gas box of the gas-filling cabinet of this utility model;

[0019] Figure 4 This is a schematic diagram of the right sealing plate structure of the gas box of the gas cabinet of this utility model;

[0020] Figure 5This is a schematic diagram of the left sealing plate structure of the gas box of the gas cabinet of this utility model;

[0021] Figure 6 This is a schematic diagram of the rear sealing plate structure of the gas box of the gas-filled cabinet of this utility model.

[0022] In the diagram: 1. Front cover plate; 2. Reinforcing rib; 3. Lifting hole; 4. Connecting hole; 5. Left sealing plate; 6. Pressure rib; 7. Rear sealing plate; 8. Right sealing plate; 10. Top plate; 11. Front sealing plate; 12. Front lower sealing plate; 13. Terminal sealing plate; 14. Bottom plate; 15. Parallel busbar through hole. Detailed Implementation

[0023] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0024] This utility model primarily addresses the problem in existing gas-filled switchgear boxes where the connecting plate with the connecting hole is welded to the main body, leading to easy deformation of both the gas box and the connecting plate. It utilizes... Figures 1-6 As shown, the gas-filled cabinet of this utility model includes a box body, which is a sealed box body, including a top plate 10, a left sealing plate 5, and a right sealing plate 8. The left and right sealing plates are welded to the left and right sides of the top plate, respectively. The top of the left and right sealing plates has a protruding part that extends upward and protrudes from the top plate 10. The protruding part is provided with a connecting hole 4 for connecting adjacent gas boxes to achieve cabinet merging. The protruding part is the cabinet merging connecting plate described in the background art. When merging, the adjacent gas boxes are connected to each other by bolts at the connecting hole 4. Since the connecting hole 4 is located on the left and right sealing plates, compared with the prior art in the background document, the welding steps are reduced, the problem of deformation of the gas box and cabinet merging connecting plate caused by welding is avoided, and the accuracy of cabinet merging assembly is improved.

[0025] Based on the main concepts above, different embodiments are provided below for illustration.

[0026] In Example 1, by means of Figures 1-6 As shown, in one embodiment, the protruding part is only provided with a connection hole for the cabinet. However, in a better embodiment, in order to facilitate the movement of the gas box and to ensure that the structural strength of the box is sufficient when the gas box is lifted and moved, in addition to the connection hole 4, the protruding part of the left and right sealing plates is also provided with a lifting hole 3. In a better embodiment, in order to increase the structural strength of the top plate 10, a reinforcing rib 2 is provided on the top plate 10. The reinforcing rib can be a pressure rib or a channel steel with a U-shaped opening facing the top plate and welded to the top plate 10.

[0027] In one embodiment, there is only one reinforcing rib. In a better embodiment, to enhance the structural strength of the top plate, there are multiple reinforcing ribs 2. The multiple reinforcing ribs 2 are spaced apart on the top plate 10. They can be set on the upper side of the top plate 10, or on the lower side of the top plate 10, or on both the upper and lower sides of the top plate 10.

[0028] In one embodiment, the reinforcing ribs on the top plate are parallel to the left and right sealing plates. In another better embodiment, in order to enhance the connection strength at the lifting hole 3 position and prevent the box body from deforming during hoisting, the reinforcing ribs 2 on the top plate are perpendicular to the left and right sealing plates. When the reinforcing ribs 2 are channel steel, the two ends of the reinforcing ribs 2 can be welded to the left and right sealing plates respectively.

[0029] In one embodiment, the left and right sealing plates are flat. Since the parallel busbars are fixed to the gas box by bolts when the gas box is connected, additional parts are required for insulation during use, which is quite troublesome. In another better embodiment, the gas box of this invention has recesses on both the left and right sealing plates. The recesses have parallel busbar through holes 15 for passing through the parallel busbars. After the parallel busbars are passed through, the bolts for fixing the parallel busbars are located in the recesses.

[0030] In one embodiment, the left and right sealing plates are provided with reinforcing ribs, which are channel steel welded to the left and right sealing plates. In another better embodiment, in order to reduce material consumption, the reinforcing ribs 2 on the left and right sealing plates are pressure ribs 6.

[0031] In one embodiment, the enclosure includes sealing plates in six directions: "up", "down", "left", "right", "front", and "rear". The sealing plates in the five directions of "up", "down", "left", "right", and "rear" are independent single sealing plates. The sealing plates in the "front" direction include three sealing plates: a front sealing plate, a front lower sealing plate extending horizontally backward from the lower end of the front sealing plate, and a wiring terminal sealing plate extending vertically downward from the rear end of the front lower sealing plate. The three sealing plates are welded in sequence to form the front sealing plate. In a better embodiment, to improve welding efficiency and enhance the overall strength of the enclosure, the enclosure includes sealing plates in six directions: "top", "bottom", "left", "right", "front", and "rear". The sealing plates in the "left", "right", and "rear" directions are independent single sealing plates. The sealing plates in the other directions are, as in the prior art, integrally bent into a front cover plate 1. The front cover plate 1 includes a top plate 10, the front end of the top plate 10 is bent downward to form a front sealing plate 11, the lower end of the front sealing plate 11 is bent backward to form a front lower sealing plate 12, the rear end of the front lower sealing plate 12 is bent downward to form a terminal sealing plate 13, and the lower end of the terminal sealing plate 13 is bent backward to form a bottom plate 14. The front cover plate 1, left sealing plate 5, right sealing plate 8, and rear sealing plate 7 are sequentially welded into a sealed whole.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. An air chamber for an air- insulated switchgear, characterized in that The gas box includes a box body, which includes a top plate and left and right sealing plates. The top of the left and right sealing plates has a protruding part that extends upward and protrudes from the top plate. The protruding part is provided with a connection hole for connecting adjacent gas boxes to achieve parallel cabinet operation.

2. An air chamber for an air insulated switchgear according to claim 1, characterized in that The protruding part is provided with a lifting hole.

3. The gas tank of claim 1, wherein, The top plate is equipped with reinforcing ribs.

4. An air chamber for an air insulated switchgear according to claim 3, c h a r a c t e r i s e d in that There are multiple reinforcing ribs, which are divided into two parts: one part is located on the upper side of the top plate, and the other part is located on the lower side of the top plate. The reinforcing ribs on the upper and lower sides are distributed at intervals in the front-back direction.

5. An air chamber for an air insulated switchgear according to claim 4, c h a r a c t e r i s e d in that The two ends of the reinforcing ribs located on the upper side of the top plate are fixedly connected to the corresponding protruding parts.

6. The gas tank of claim 4, wherein, The two ends of the reinforcing rib located on the underside of the top plate are fixedly connected to the left and right sealing plates.

7. An air chamber for an air insulated switchgear according to any one of claims 1-6, characterized in that Both the left and right sealing plates are provided with recesses, and the recesses are provided with busbar through holes.

8. An air chamber for an air insulated switchgear according to any one of claims 1-6, characterized in that Reinforcing ribs are provided on both the left and right end plates.

9. The gas tank of claim 8, wherein, The reinforcing ribs on the left and right end plates are pressure ribs.

10. An air chamber for an air insulated switchgear according to any one of claims 1-6, characterized in that The housing includes a front cover plate and a rear cover plate. The front cover plate is a bent piece. The front cover plate includes a top plate, a front cover plate formed by bending the front end of the top plate downward, a front lower cover plate formed by bending the lower end of the front cover plate backward, a terminal cover plate formed by bending the rear end of the front lower cover plate downward, and a bottom plate formed by bending the lower end of the terminal cover plate backward.

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