Gas tank for gas insulation switch cabinet and gas insulation switch cabinet

Abstract

The utility model provides a gas tank for a gas insulation switch cabinet and the gas insulation switch cabinet. The gas tank comprises a first C-shaped plate; the first C-shaped plate and the second C-shaped plate form a sealed cuboid shell of the gas tank. Therefore, a cuboid shell can be assembled only by aligning the two C-shaped plates, the assembly process is reduced, the welding operation is reduced, and the process is greatly simplified.

Description

Technical Field

[0001] The utility model relates to the field of switch cabinets, in particular to a gas box used for a gas-insulated switch cabinet and a gas-insulated switch cabinet. Background Art

[0002] Gas-insulated switchgear is widely used in urban power grid construction and transformation, rail transit, and large industrial and mining enterprises, and is an important power equipment. An important feature of gas-insulated switchgear is that it has a gas box filled with SF6 gas, N2 gas or mixed gas as the insulating medium of the switchgear.

[0003] In the prior art, during the production of the gas box, the gas box is welded. The gas box is formed by welding 6 plates together to form a rectangular shell. The plates of the gas box are scattered, and usually a relatively complex welding tool is required to complete the welding of the gas box, which is inconvenient for workers to operate. Utility Model Content

[0004] In view of this, the utility model proposes a gas box for a gas insulated switchgear, comprising:

[0005] A first C-shaped plate;

[0006] A second C-shaped plate, wherein the first C-shaped plate and the second C-shaped plate constitute a sealed rectangular parallelepiped shell of the air box.

[0007] In this way, a rectangular outer shell can be assembled by aligning two C-shaped plates, and only 8 welds are needed to complete the sealing of the rectangular outer shell. Compared with the original need to align 6 plates and weld 12 seams, not only the assembly process is reduced, the welding operations are reduced, and the process is greatly simplified. In addition, the reduction in welds can greatly improve the sealing of the air box and reduce the problem of gas leakage caused by welds.

[0008] According to the air box as described above, optionally, at least one of the first C-shaped plate and the second C-shaped plate has a deformation portion, and the deformation portion is a convex portion or a concave portion. The existence of the deformation portion enables the rectangular shell to adapt to such pressure without providing reinforcing ribs, thereby avoiding large deformation to ensure the sealing of the air box.

[0009] According to the air box as described above, optionally, the cross section of the deformation portion is at least one of the following shapes: circular, elliptical. This not only simplifies the process, but also enables the area occupied by the deformation portion to be as large as possible.

[0010] According to the air box as described above, optionally, the area of ​​the deformed portion is larger than 1 / 2 of the area of ​​the plate on the side where the deformed portion is located.

[0011] According to the air box as described above, optionally, the first C-shaped plate includes two first side plates and a front plate connected between the two first side plates, and each of the two first side plates has one deformation portion.

[0012] According to the air box as described above, optionally, the second C-shaped plate includes a top plate, a bottom plate, and a back plate connected between the top plate and the bottom plate, and the back plate has one deformation portion.

[0013] According to the air box as described above, optionally, the first C-shaped plate and the second C-shaped plate are both integrally formed plates.

[0014] According to the air box as described above, optionally, the first C-shaped plate is formed by stamping one plate, and the second C-shaped plate is formed by stamping one plate. The first C-shaped plate and the second C-shaped plate are formed by stamping process, which has low cost.

[0015] The utility model also provides a gas-insulated switch cabinet, comprising the gas box for the gas-insulated switch cabinet as described in any one of the above items. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that those skilled in the art will be more aware of the above and other features and advantages of the present invention. In the accompanying drawings:

[0017] Figure 1 The figure is a schematic structural diagram of a gas box for a gas insulated switchgear according to an embodiment of the utility model.

[0018] Figure 2 for Figure 1 Schematic diagram of the decomposition.

[0019] Figure 3 The figure is a schematic diagram of the structure of a gas box for a gas-insulated switchgear according to another embodiment of the utility model.

[0020] The reference numerals are as follows:

[0021] 1-First C-shaped plate

[0022] 11- First side panel

[0023] 111-Through hole

[0024] 12-Front panel

[0025] 2- Second C-shaped plate

[0026] 21-Top plate

[0027] 22- Bottom plate

[0028] 23-Back panel

[0029] 3-Deformation

[0030] 4-Casing DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail with reference to the following embodiments. The nouns and pronouns related to people in this patent application are not limited to specific genders.

[0032] The utility model provides a gas box for a gas-insulated switch cabinet.

[0033] like Figures 1 to 3 FIG. 1 is a schematic diagram of the structure of a gas box for a gas-insulated switchgear according to the utility model. The gas box only shows its rectangular shell, and does not show its internal components. Usually, the gas box is filled with insulating gas and is equipped with components such as a three-position switch.

[0034] The air box comprises a first C-shaped plate 1 and a second C-shaped plate 2, and the first C-shaped plate 1 and the second C-shaped plate 2 constitute a sealed rectangular parallelepiped shell of the air box.

[0035] like Figure 2 As shown, the first C-shaped plate 1 and the second C-shaped plate 2 can be assembled together to form a rectangular shell, and the first C-shaped plate 1 and the second C-shaped plate 2 are welded together to form a sealed rectangular shell. The structure of the rectangular shell is as shown in FIG. Figure 1 and Figure 3 Insulating gas will be filled into the rectangular shell to play an insulating role.

[0036] like Figure 2 As shown, the two plates are C-shaped when viewed from the side. For the first C-shaped plate 1, the required components, such as the sleeve 4, can be assembled thereon in advance. Since the first C-shaped plate 1 can be installed with components in three directions (direction D1, direction D2 and direction D3), its working process is continuous, simplifying the workflow. Specifically, the workers at the assembly station can complete the installation of the components inside the air box in the first C-shaped plate 1, and then go to the welding station to complete the sealing welding between the first C-shaped plate 1 and the second C-shaped plate 2.

[0037] In this way, a rectangular outer shell can be assembled by aligning two C-shaped plates, and only 8 welds are needed to complete the sealing of the rectangular outer shell. Compared with the original need to align 6 plates and weld 12 seams, not only the assembly process is reduced, the welding operations are reduced, and the process is greatly simplified. In addition, the reduction in welds can greatly improve the sealing of the air box and reduce the problem of gas leakage caused by welds.

[0038] Optionally, at least one of the first C-shaped plate 1 and the second C-shaped plate 2 has a deformation portion 3, and the number of the deformation portions 3 can be adjusted according to actual needs. Figure 1 and Figure 2 As shown, both the first C-shaped plate 1 and the second C-shaped plate 2 have a deformation portion 3, wherein the first C-shaped plate 1 has two deformation portions 3, and the second C-shaped plate 2 has one deformation portion 3. As another exemplary illustration, Figure 3 As shown, only the first C-shaped plate 1 has the deformation part 3, and the second C-shaped plate 2 does not have the deformation part 3, wherein the first C-shaped plate 1 has two deformation parts 3. The deformation part 3 is a convex part or a concave part, and more specifically, it can be a part of a spherical surface or a part of an ellipsoidal surface. When the insulating gas is filled into the rectangular shell, a certain pressure will be applied to the rectangular shell. The existence of the deformation part 3 enables the rectangular shell to adapt to such pressure without the need for reinforcing ribs, thereby avoiding large deformation to ensure the sealing of the gas box.

[0039] As an exemplary illustration, the area occupied by the deformation portion 3 should be as large as possible, so that the area occupied by the structure adapted to the pressure caused by inflation can be as large as possible. For example, the area of ​​the deformation portion 3 is larger than 1 / 2 of the area of ​​the plate.

[0040] As another exemplary explanation, the shape of the cross section of the deformation portion 3 is at least one of the following shapes: circular, elliptical. The deformation portion 3 can be formed by stamping, for example, two molds are used to sandwich the plate in the middle, and the deformation portion 3 is formed by stamping. The cross section of the deformation portion 3 is circular or elliptical, which not only simplifies the process, but also makes the area occupied by the deformation portion 3 as large as possible. Whether the cross section of the deformation portion 3 is circular or elliptical can be set according to the free space of the plate.

[0041] As another exemplary explanation, the height of the deformation part 3 can be determined according to the actual process. The higher the height, the better the strength and the better the ability to resist deformation. The height of the deformation part 3 refers to the height between the highest point of the deformation part 3 and the flat plate part on the side, that is, the maximum height of the deformation. The height of the deformation part 3 should not be too high to avoid occupying the space of other parts.

[0042] Optionally, the first C-shaped plate 1 and the second C-shaped plate 2 are both integrally formed plates. As an exemplary illustration, one plate can be used, and two bends can be formed by stamping twice to form the first C-shaped plate 1. Similarly, one plate can be used, and two bends can be formed by stamping twice to form the second C-shaped plate 2. The first C-shaped plate 1 and the second C-shaped plate 2 are formed by a stamping process, which has a low cost.

[0043] Optionally, the first C-shaped plate 1 includes two first side plates 11 and a front plate 12 connected between the two first side plates 11, and each of the two first side plates 11 has one deformation portion 3. As an exemplary illustration, Figure 1 and Figure 2 As shown, the two first side plates 11 each have a plurality of through holes 111 . Figure 1 and Figure 2 As shown in FIG. 1 , each of the two first side plates 11 has three through holes 111 , and each through hole 111 is used to install a sleeve. Figure 2 As can be seen from the figure, the cross section of the deformation portion 3 of the first C-shaped plate 1 is circular. Due to the presence of the through hole 111, the remaining portion of the first side plate 11 is substantially square, so the cross section of the deformation portion 3 is set to be circular. Since many components are to be installed on the front plate 12, the deformation portion 3 is not set thereon. As another exemplary illustration, Figure 3 As shown, no sleeve is installed on the first side plate 11, so the cross section of the deformation portion 3 on the first side plate 11 is elliptical.

[0044] As an example, Figure 1 and Figure 2 As shown, the second C-shaped plate 2 includes a top plate 21, a bottom plate 22, and a back plate 23 connected between the top plate 21 and the bottom plate 22. As an exemplary illustration, the back plate 23 has a deformation portion 3. The remaining portion on the back plate 23 is generally rectangular, so the elliptical deformation portion 3 is provided on the back plate 23 so that the deformation portion 3 can occupy the back plate 23 as much as possible. As another exemplary illustration, Figure 3 As shown, the second C-shaped plate 2 is not provided with a deformation portion 3, and the front plate 12 and the top plate 21 are provided with a through hole 111 for installing the sleeve 4. As another exemplary explanation, any one or more of the top plate 21, the bottom plate 22, and the back plate 23 can be provided with a deformation portion 3, and the cross-section of the deformation portion 3 can be any one of an elliptical or circular shape, which can be set according to actual needs.

[0045] In addition, whether the deformation portion 3 is a convex portion or a concave portion can be determined according to the setting of corresponding side components. If the components on the corresponding side inside the air box are crowded, the deformation portion 3 can be set as a convex portion, that is, it convexes toward the outside of the air box. If components are set on the corresponding side outside the air box, the deformation portion 3 can be set as a concave portion, that is, it is concave toward the inside of the air box. The specific selection can be made according to actual needs.

[0046] It should be noted that providing one deformation portion 3 on a plate instead of multiple deformation portions 3 can better adapt to the pressure (Pressure) brought by the insulating gas.

[0047] The utility model also provides a gas-insulated switch cabinet, comprising the gas box for the gas-insulated switch cabinet according to any of the above embodiments.

[0048] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. 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 gas box for a gas-insulated switchgear, characterized in that: include: A first C-shaped plate (1); A second C-shaped plate (2), wherein the first C-shaped plate (1) and the second C-shaped plate (2) constitute a sealed rectangular parallelepiped shell of the air box.

2. The air box according to claim 1, characterized in that At least one of the first C-shaped plate (1) and the second C-shaped plate (2) has a deformation portion (3), and the deformation portion (3) is a convex portion or a concave portion.

3. The air box according to claim 2, characterized in that: The cross-section of the deformation portion (3) is at least one of the following shapes: circular, elliptical.

4. The air box according to claim 2, characterized in that: The area of ​​the deformation portion (3) is greater than 1 / 2 of the area of ​​the plate on the side where it is located.

5. The air box according to claim 2, characterized in that: The first C-shaped plate (1) comprises two first side plates (11) and a front plate (12) connected between the two first side plates (11), and each of the two first side plates (11) has one deformation portion (3).

6. The air box according to claim 2, characterized in that: The second C-shaped plate (2) comprises a top plate (21), a bottom plate (22), and a back plate (23) connected between the top plate (21) and the bottom plate (22), and the back plate (23) has one deformation portion (3).

7. The air box according to any one of claims 1 to 6, characterized in that: The first C-shaped plate (1) and the second C-shaped plate (2) are both integrally formed plates.

8. The air box according to any one of claims 1 to 6, characterized in that: The first C-shaped plate (1) is formed by punching a plate, and the second C-shaped plate (2) is formed by punching a plate.

9. A gas-insulated switchgear, comprising the gas box for a gas-insulated switchgear according to any one of claims 1 to 8.

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