Gas-insulated switchgear housing and gas-insulated switchgear

Abstract

This invention provides a gas-insulated switchgear housing, comprising a main housing (10) and a sealing assembly (30). The main housing forms a cavity (11). An assembly operation port (12) is provided on the rear side of the cavity along the depth direction (D) of the gas-insulated switchgear. The sealing assembly includes a sealing plate (31) and a reinforcing plate (32). The sealing plate is perpendicular to the depth direction. The edge of the sealing plate is sealed to the main housing to close the assembly operation port. The reinforcing plate is parallel to the sealing plate and located on the side of the sealing plate facing the cavity. The reinforcing plate has several protrusions (321) protruding towards the sealing plate. The protrusions (321) are fixedly connected to the sealing plate (31). This gas-insulated switchgear housing improves the pressure-bearing capacity of the gas-insulated switchgear. Furthermore, this invention also provides a gas-insulated switchgear including the above-described gas-insulated housing.

Description

Technical Field

[0001] This invention relates to the field of switchgear, and more particularly to the gas chamber housing of gas-insulated switchgear and the gas-insulated switchgear itself. Background Technology

[0002] The gas-insulated switchgear's gas chamber is a sealed cavity that houses electrical components such as circuit breakers, busbars, and three-position switches. It is filled with gas to achieve insulation and arc extinguishing. During operation, the gas chamber must withstand internal rated gas pressure, changes in ambient atmospheric pressure, and instantaneous pressure increases caused by electric arcs; therefore, it needs a certain pressure-bearing capacity. With the development of power grids towards higher voltage, larger capacity, and more compact designs, even higher requirements are placed on the pressure-bearing capacity of the gas chamber. Summary of the Invention

[0003] The purpose of this invention is to provide a gas-insulated switchgear housing that improves the pressure-bearing capacity of the gas-insulated switchgear.

[0004] Another object of the present invention is to provide a gas-insulated switchgear that improves the pressure-bearing capacity of the gas chamber shell.

[0005] This invention provides a gas-insulated switchgear housing, comprising a main housing and a sealing assembly. The main housing forms a cavity. An assembly access port is provided on the rear side of the cavity along the depth direction of the gas-insulated housing. The sealing assembly includes a sealing plate and a reinforcing plate. The sealing plate is positioned perpendicular to the depth direction. The edge of the sealing plate is sealingly connected to the main housing to close the assembly access port. The reinforcing plate is positioned parallel to the sealing plate and located on the side of the sealing plate facing the cavity. The reinforcing plate has several protrusions protruding towards the sealing plate. The protrusions are fixedly connected to the sealing plate.

[0006] The gas-insulated switchgear's gas box shell has its pressure-bearing capacity improved by adding a reinforcing plate, thereby enhancing the overall pressure-bearing capacity of the gas box shell.

[0007] In another illustrative embodiment of the gas-insulated switchgear's gas box shell, the protrusion is shaped like a boss with its top surface parallel to the sealing plate. The top surface of the protrusion is attached to and fixedly connected to the sealing plate. This helps to improve the connection strength.

[0008] In another illustrative embodiment of the gas-insulated switchgear's gas box shell, the protrusion is shaped like a frustum of a cone, with its radius gradually decreasing towards the sealing plate. This helps to improve structural strength, but is not limited to this.

[0009] In another illustrative embodiment of the gas-insulated switchgear's gas box shell, the sealing assembly further includes a first reinforcing rib. The first reinforcing rib is disposed on the side of the sealing plate facing the cavity. The first reinforcing rib extends along the height direction of the gas box shell and is formed by bending a sheet material. The first reinforcing rib forms a through groove facing the sealing plate, and on each side of the through groove along the width direction of the gas box shell, a first flange parallel to the sealing plate is formed. The first flanges are attached to and fixedly connected to the sealing plate. By providing the first reinforcing rib, the pressure-bearing capacity of the sealing plate is further improved.

[0010] In another illustrative embodiment of the gas-insulated switchgear's gas box shell, the sealing assembly is provided with a first reinforcing rib and two reinforcing plates. The first reinforcing rib is connected to the middle of the sealing plate along the width direction of the gas box shell. The two reinforcing plates are respectively disposed on both sides of the first reinforcing rib along the width direction of the gas box shell. This effectively improves the pressure-bearing capacity of the sealing plate while saving space.

[0011] In another illustrative embodiment of the gas-insulated switchgear's housing, the main housing includes a back plate. The back plate is located on the rear side of the cavity along the depth direction and is disposed perpendicular to the depth direction. The back plate forms an assembly operation opening and is located below the assembly operation opening along the height direction of the gas-insulated housing. The edge of the back plate forming the assembly operation opening is bent along a bend line parallel to the width direction of the gas-insulated housing, forming a stepped shape extending into the cavity, and forming a second flange parallel to the sealing plate at its end. The second flange is located on the side of the sealing plate facing the cavity and is sealingly connected to the edge of the sealing plate. This facilitates improving the pressure-bearing capacity of the back plate. The second flange has a positioning notch that engages with the first reinforcing rib, thereby facilitating the installation and positioning of the sealing assembly.

[0012] In another illustrative embodiment of the gas-insulated switchgear's gas box shell, the gas-insulated switchgear further includes three bushings. The three bushings pass through and are fixed to the back plate and are arranged side by side along the width direction of the gas box shell.

[0013] In another illustrative embodiment of the gas-insulated switchgear's gas housing, the main housing further includes a base plate. The base plate is located below the cavity along the height direction of the gas housing and is perpendicular to the height direction. The base plate is connected to a back plate and has a pressure relief port. The pressure relief port is opposite to the end of a bushing located in the middle position along the height direction of the gas housing. This facilitates installation and operation.

[0014] In another illustrative embodiment of the gas-insulated switchgear's gas box shell, the main shell further includes a front plate defining the cavity along the front boundary of the gas box shell in the depth direction, a top plate defining the upper boundary in the height direction, and side plates defining the left and right boundary in the width direction. The front plate includes a flat plate and a bent plate connected in sequence. The flat plate is perpendicularly connected to the top plate. The flat plate is disposed opposite to the back plate. The bent plate has an integrally formed first sub-plate and a second sub-plate that are perpendicular to each other. The first sub-plate is perpendicularly pressed onto the bottom plate. The flat plate is perpendicularly pressed onto the second sub-plate. This arrangement facilitates the installation of the bent plate and is compatible with the case of a front bushing.

[0015] In another illustrative embodiment of the gas-insulated switchgear's gas box shell, the sealing assembly further includes a second reinforcing rib. The second reinforcing rib extends along the width direction of the gas box shell and is fixed to the surface of the sealing plate facing away from the cavity. The second reinforcing rib is connected to the end of the sealing plate near the back plate along the height direction of the gas box shell. This reduces deformation of the end of the sealing plate near the back plate along the height direction, facilitating the maintenance of the bushing in the designed position.

[0016] In another illustrative embodiment of the gas-insulated switchgear's gas box shell, the second reinforcing rib is a rectangular tube, with one side of it attached to and fixedly connected to the sealing plate. This facilitates providing higher strength support to the sealing plate.

[0017] The present invention also provides a gas-insulated switchgear, which includes the aforementioned gas housing. The gas housing, by incorporating reinforcing plates, improves the pressure-bearing capacity of the sealing plates, thereby enhancing the overall pressure-bearing capacity of the gas housing. Attached Figure Description

[0018] The following figures are for illustrative purposes only and do not limit the scope of the invention.

[0019] Figure 1 This is a schematic diagram of one embodiment of the gas box shell of a gas-insulated switchgear.

[0020] Figure 2 for Figure 1 The diagram shows the exploded structure of the gas tank shell.

[0021] Figure 3 for Figure 1 The diagram shows a top view of the sealing assembly of the gas box shell.

[0022] Figure 4 for Figure 1 The diagram shows a partial structural schematic of the gas tank shell.

[0023] Figure 5 for Figure 1 The diagram shows a structural schematic of the gas tank shell from another angle.

[0024] Figure 6 for Figure 1 The diagram shows a structural schematic of the gas tank shell from another angle.

[0025] Figure 7 This is a side view structural diagram of the base plate and front plate.

[0026] Label Explanation

[0027] 10 Main housing

[0028] 11. Cavity

[0029] 12 Assembly operation port

[0030] 14 Back panel

[0031] 141 Second flip

[0032] N Positioning Gap

[0033] 16 base plate

[0034] 161 Pressure relief port

[0035] 17 front panel

[0036] 171 Tablet

[0037] 172 Bending Plate

[0038] 1721 First board

[0039] 1722 Second Subplate

[0040] 18. Top Slab

[0041] 19 Side panels

[0042] 30 Sealing Components

[0043] 31 Sealing plate

[0044] 32 Reinforcing Plate

[0045] 321 bump

[0046] 33 First reinforcing rib

[0047] 331 through slot

[0048] 332 First Flip

[0049] 34 Second reinforcing rib

[0050] 50 casing

[0051] D. Depth direction of the air box shell

[0052] H. Height direction of the air box shell

[0053] W represents the width direction of the air box shell. Detailed Implementation

[0054] To provide a clearer understanding of the technical features, objectives, and effects of the invention, specific embodiments of the invention are now described with reference to the accompanying drawings. In the drawings, the same reference numerals indicate components with the same or similar structures but the same function.

[0055] In this document, “illustrative” means “serving as an example, illustration or description”, and any illustration or implementation described herein as “illustrative” should not be construed as a more preferred or advantageous technical solution.

[0056] In this document, terms such as "first" and "second" do not indicate their importance or order, but are only used to distinguish them to facilitate the description of the document.

[0057] In this article, terms such as "up," "down," "front," "back," "inner," and "outer" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0058] To keep the drawings simple, each drawing only schematically shows the parts related to the present invention, and they do not represent the actual structure of the product.

[0059] Figure 1 This is a schematic diagram of one embodiment of the gas box shell of a gas-insulated switchgear. Figure 2 for Figure 1 The diagram shows an exploded view of the air tank housing. For ease of explanation, this illustrative embodiment is illustrated using the depth direction D, height direction H, and width direction W of the air tank housing, which are, for example, mutually perpendicular. The front side of the air tank housing along the depth direction D faces the operator, for example, and the lower side of the air tank housing along the height direction H faces the ground, but is not limited thereto.

[0060] like Figure 1 and Figure 2 As shown, the gas-insulated switchgear's gas chamber includes a main housing 10 and a sealing assembly 30. The main housing 10 forms a cavity 11. The cavity 11 is used to accommodate electrical components. An assembly operation port 12 is provided on the rear side of the cavity 11 along the depth direction D of the gas chamber. During gas chamber assembly, the assembly operation port 12 serves, for example, as an operation port for installing electrical components inside the gas chamber. It is conceivable that after other components are assembled on the sidewalls of the gas chamber of the present invention, such as after a sleeve is fitted onto the gas chamber, the gas chamber is sealed, allowing gas to be introduced.

[0061] like Figure 2As shown, the sealing assembly 30 includes a sealing plate 31 and two reinforcing plates 32. These two reinforcing plates 32 can be combined into a single reinforcing plate, depending on actual needs. The sealing plate 31 is positioned perpendicular to the depth direction D. The edge of the sealing plate 31 is sealingly connected to the main housing 10 to close the assembly access port 12. The edge of the sealing plate 31 is sealingly welded to the main housing 10, for example, by filler wire welding under carbon dioxide gas protection, but is not limited thereto.

[0062] Figure 3 for Figure 1 The diagram shows a top view of the sealing assembly of the gas tank shell. (See attached image.) Figure 2 and Figure 3 As shown, the reinforcing plate 32 is arranged parallel to the sealing plate 31 and located on the side of the sealing plate 31 facing the cavity 11. The reinforcing plate 32 has several protrusions 321 protruding towards the sealing plate 31. The protrusions 321 are fixedly connected to the sealing plate 31. The protrusions 321 and the reinforcing plate 32 can be integrally formed. The protrusions 321 are formed, for example, by stamping, but are not limited to this. By providing the reinforcing plate 32, the pressure-bearing capacity of the sealing plate 31 is improved, thereby facilitating the improvement of the overall pressure-bearing capacity of the gas box shell. Especially in a gas box structure with a rear-mounted sleeve, the rear-mounted sleeve is, for example, Figure 1 and Figure 2 As shown, the sleeve 50 of the air box passes through and is fixed to the back plate 14 located on the rear side of the cavity 11 along the depth direction D. The back plate 14 is connected to the sealing plate 31. By improving the pressure bearing capacity of the sealing plate 31, the deformation of the back plate 14 can be effectively reduced, thereby helping to maintain the sleeve 50 in the designed position.

[0063] Specifically, such as Figure 2 and Figure 3 As shown, in the schematic embodiment, the protrusion 321 is a boss-shaped protrusion with its top surface parallel to the sealing plate 31. The top surface of the protrusion 321 is attached to and fixedly connected to the sealing plate 31. This facilitates improved connection strength. Here, "top surface" refers to the flat surface on the side of the protrusion 321 facing the sealing plate 31, which is attached to the sealing plate 31 to achieve the largest possible contact area. The top surface of the protrusion 321 can be welded to the sealing plate 31, for example, by resistance welding, but is not limited to this. Furthermore, the protrusion 321 can be, for example, shaped like a frustum of a cone, with its radius gradually decreasing in the direction towards the sealing plate 31. This facilitates improved structural strength, but is not limited to this.

[0064] During the assembly of the gas box, for example, electrical components are first installed into the interior of the main housing 10 through the assembly operation port 12, and then the assembly operation port 12 is closed with the assembled sealing assembly 30. The assembled sealing assembly 30 means that the various parts of the sealing assembly 30 have been connected into a whole.

[0065] In other illustrative embodiments, the number, size, and position of the reinforcing plates 32 fixed to the sealing plate 31, as well as the number, shape, size, and position of the protrusions 321 on the reinforcing plates 32, can all be adjusted as needed. The more protrusions 321 there are, the better the pressure-bearing capacity of the sealing plate 31 is improved. As an example, such as... Figure 4 As shown, the protrusions 321 located on the same reinforcing plate 32 can be staggered, that is, arranged in an alternating manner, so that the pressure-bearing capacity of the sealing plate 31 can be improved with a smaller number of protrusions 321.

[0066] like Figure 2 and Figure 3 As shown in the schematic embodiment, the sealing assembly 30 further includes a first reinforcing rib 33. The first reinforcing rib 33 is disposed on the side of the sealing plate 31 facing the cavity 11. The first reinforcing rib 33 extends along the height direction H of the gas box shell and is formed by bending a sheet material along a bending line parallel to the height direction H. The first reinforcing rib 33 forms a through groove 331 facing the sealing plate 31, and a first flange 332 parallel to the sealing plate 31 is formed on each side of the through groove 331 along the width direction W of the gas box shell. The first flange 332 is attached to and fixedly connected to the sealing plate 31. The first flange 332 is welded to the sealing plate 31, for example, by resistance welding, but is not limited thereto. By providing the first reinforcing rib 33, it is beneficial to further improve the pressure-bearing capacity of the sealing plate 31.

[0067] like Figure 3 As shown in the schematic embodiment, the first reinforcing rib 33 is connected to the middle of the sealing plate 31 along the width direction W of the air box shell. Two reinforcing plates 32 are respectively disposed on both sides of the first reinforcing rib 33 along the width direction W of the air box shell. This effectively improves the pressure-bearing capacity of the sealing plate 31 while saving space.

[0068] like Figure 1 and Figure 2 As shown in the schematic embodiment, the main housing 10 includes a back plate 14. The back plate 14 is located behind the cavity 11 along the depth direction D and is disposed perpendicular to the depth direction D. The back plate 14 is used to form an assembly operation port 12 and is located below the assembly operation port 12 along the height direction H of the air box shell. Figure 4 for Figure 1 The diagram shows a partial structural representation of the gas tank shell, illustrating the relative positions of the reinforcing plate 32, the first reinforcing rib 33, and the back plate 14. Figure 2 and Figure 4 As shown, the edge of the back plate 14 that forms the assembly operation port 12 (i.e. Figure 2 and Figure 4The upper edge of the back plate 14 is bent along a bend line parallel to the width direction W of the air box shell, forming a step that extends into the cavity 11, and at its end forms a second flange 141 parallel to the sealing plate 31. The second flange 141 is located on the side of the sealing plate 31 facing the cavity 11 and is sealed to the edge of the sealing plate 31. This helps to improve the pressure-bearing capacity of the back plate 14. Figure 2 and Figure 4 As shown, the second flange 141 has a positioning notch N that engages with the first reinforcing rib 33 to facilitate the installation and positioning of the sealing assembly 30.

[0069] like Figure 1 As shown in the schematic embodiment, the gas-insulated switchgear also includes three bushings 50 (only one bushing 50 is schematically shown in the figure). The three bushings 50 pass through and are fixed to the back plate 14 and are arranged side by side along the width direction W of the gas box shell. The bushings 50 are arranged on the back plate 14, for example, to enable the rear of the gas box to exit. Figure 5 for Figure 1 A schematic diagram of the gas tank shell from another angle is shown. (See diagram below.) Figure 5 As shown, the main housing 10 also includes a base plate 16. The base plate 16 is located below the cavity 11 along the height direction H of the air box shell and is disposed perpendicular to the height direction H. The base plate 16 is connected to the back plate 14 and has a pressure relief port 161. The pressure relief port 161 is opposite to the end of the sleeve 50 located in the middle position along the height direction H of the air box shell. When installing other structures into the portion of the sleeve 50 located within the cavity 11, operation can be performed, for example, through the pressure relief port 161. This facilitates installation operations.

[0070] like Figure 1 and Figure 2 As shown in the schematic embodiment, the sealing assembly 30 further includes a second reinforcing rib 34. The second reinforcing rib 34 extends along the width direction W of the gas chamber shell and is fixed to the surface of the sealing plate 31 facing away from the cavity 11. The second reinforcing rib 34 is connected to the end of the sealing plate 31 near the back plate 14 along the height direction H of the gas chamber shell. In this way, deformation of the end of the sealing plate 31 near the back plate 14 along the height direction H can be reduced, which helps to maintain the sleeve 50 in the designed position. The second reinforcing rib 34 is welded to the sealing plate 31, for example by resistance welding, but is not limited thereto.

[0071] Specifically, the second reinforcing rib 34 is, for example, a rectangular tube, and one side of it is attached to and fixedly connected to the sealing plate 31. This facilitates providing higher strength support to the sealing plate 31.

[0072] like Figure 1 and Figure 2As shown, in this illustrative embodiment, the main housing 10 also includes a front plate 17 (e.g., composed of multiple plates) along the front boundary of the air box housing in the depth direction D, a top plate 18 along the upper boundary in the height direction H, and side plates 19 along the left and right side boundaries in the width direction W for defining the cavity 11.

[0073] Figure 6 for Figure 1 The diagram shows a structural schematic of the gas tank shell from another angle. Figure 7 This is a side view structural diagram of the base plate and front plate. As an example, such as... Figure 6 and Figure 7 As shown, the front panel 17 includes a flat plate 171 and a bent plate 172 connected in sequence. The flat plate 171 is vertically connected to the top plate 18. The flat plate 171 is disposed opposite to the back plate 14. The bent plate 172 has an integrally formed first sub-plate 1721 and a second sub-plate 1722 that are perpendicular to each other. The first sub-plate 1721 is vertically pressed onto the bottom plate 16 (e.g., ...). Figure 7 As shown at point A in the diagram, the flat plate 171 is vertically pressed onto the second sub-plate 1722 (as shown in the diagram). Figure 7 (As shown at point B in the diagram). The bent plate 172 used in the front plate 17 forms a recessed portion that is recessed into the cavity 11. A sleeve can be installed at the first sub-plate 1721, meaning that the main housing 10 is also suitable for having a sleeve on the front side. The connection between the first sub-plate 1721 and the bottom plate 16 can be achieved by welding, and the connection between the second sub-plate 1722 and the flat plate 171 can also be achieved by welding. In practical operation, due to the inherent manufacturing defects of the bending plate 172, a first sub-plate 1721 is pressed onto the base plate 16 to ensure a proper connection between the first sub-plate 1721 and the base plate 16. For the second sub-plate 1722, since the flat plate 171 is pressed onto the second sub-plate 1722, the second sub-plate 1722 can protrude slightly to maintain its connection with the flat plate 171. Alternatively, if the length of the first sub-plate 1721 is slightly too high or too low, the second sub-plate 1722 can be slightly tilted to achieve a connection with the flat plate 171. This design facilitates the installation of the bending plate 172 and allows for certain tolerances. It is understood that although this invention mentions the concept of "vertical," it does not necessarily mean 90°; a deviation from 90° is permissible.

[0074] The present invention also provides a gas-insulated switchgear, in one illustrative embodiment of which the gas-insulated switchgear includes... Figure 1 The air box shell is shown. By installing a reinforcing plate 32, the pressure-bearing capacity of the sealing plate 31 is improved, thereby enhancing the overall pressure-bearing capacity of the air box shell.

[0075] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0076] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention and are not intended to limit the scope of protection of the present invention. All equivalent implementation schemes or modifications made without departing from the spirit of the present invention, such as combinations, divisions or repetitions of features, should be included within the scope of protection of the present invention.

Claims

1. The gas chamber shell of a gas-insulated switchgear, characterized in that, include: The main housing (10) forms a cavity (11), and the main housing (10) has an assembly operation port (12) on the rear side of the cavity (11) along the depth direction (D) of the air box shell. as well as Sealing assembly (30), comprising: A sealing plate (31), which is arranged perpendicular to the depth direction (D), the edge of the sealing plate (31) is sealed to the main housing (10) to close the assembly operation port (12), and A reinforcing plate (32) is arranged parallel to the sealing plate (31) and located on the side of the sealing plate (31) facing the cavity (11). The reinforcing plate (32) has several protrusions (321) protruding towards the sealing plate (31). The protrusions (321) are fixedly connected to the sealing plate (31). The sealing assembly (30) further includes a first reinforcing rib (33), which is disposed on the side of the sealing plate (31) facing the cavity (11). The first reinforcing rib (33) extends along the height direction (H) of the air box shell and is formed by bending a plate. The first reinforcing rib (33) forms a through groove (331) facing the sealing plate (31), and a first flange (332) parallel to the sealing plate (31) is formed on each side of the through groove (331) along the width direction (W) of the air box shell. The first flange (332) is attached to and fixedly connected to the sealing plate (31).

2. The gas box shell of the gas-insulated switchgear as described in claim 1, characterized in that, The protrusion (321) is a boss-shaped structure with its top surface parallel to the sealing plate (31), and the top surface of the protrusion (321) is attached to and fixedly connected to the sealing plate (31).

3. The gas box shell of the gas-insulated switchgear as described in claim 2, characterized in that, The protrusion (321) is shaped like a frustum of a cone, and its radius gradually decreases in the direction toward the sealing plate (31).

4. The gas box shell of the gas-insulated switchgear as described in claim 1, characterized in that, The sealing assembly (30) is provided with a first reinforcing rib (33) and two reinforcing plates (32). The first reinforcing rib (33) is connected to the middle part of the sealing plate (31) along the width direction (W) of the air box shell, and the two reinforcing plates (32) are respectively provided on both sides of the first reinforcing rib (33) along the width direction (W) of the air box shell.

5. The gas box shell of the gas-insulated switchgear as described in claim 1, characterized in that, The main housing (10) includes a back plate (14), which is located on the rear side of the cavity (11) along the depth direction (D) and perpendicular to the depth direction (D). The back plate (14) is used to form the assembly operation port (12) and is located on the lower side of the assembly operation port (12) along the height direction (H) of the air box shell. The edge of the back plate (14) used to form the assembly operation port (12) is bent along a bending line parallel to the width direction (W) of the air box shell to form a step extending into the cavity (11), and a second flange (141) parallel to the sealing plate (31) is formed at the end. The second flange (141) is located on the side of the sealing plate (31) facing the cavity (11) and is sealed to the edge of the sealing plate (31). The second flange (141) has a positioning notch (N) that is inserted and engaged with the first reinforcing rib (33).

6. The gas box shell of the gas-insulated switchgear as described in claim 5, characterized in that, The gas-insulated switchgear also includes three bushings (50), which are inserted through and fixed to the back plate (14) and arranged side by side along the width direction (W) of the gas box shell.

7. The gas box shell of the gas-insulated switchgear as described in claim 6, characterized in that, The main housing (10) also includes a base plate (16), which is located on the lower side of the cavity (11) along the height direction (H) of the air box and is arranged perpendicular to the height direction (H). The base plate (16) is connected to the back plate (14) and has a pressure relief port (161). The pressure relief port (161) is opposite to the end of the sleeve (50) located in the middle along the height direction (H) of the air box.

8. The gas box shell of the gas-insulated switchgear as described in claim 7, characterized in that, The main housing (10) further includes a front plate (17) for defining the cavity (11) along the front boundary of the air box shell in the depth direction (D), a top plate (18) along the upper boundary in the height direction (H), and side plates (19) along the left and right boundaries in the width direction (W). The front plate (17) includes a flat plate (171) and a bent plate (172) connected in sequence. The flat plate (171) is perpendicularly connected to the top plate (18). The flat plate (171) is disposed opposite to the back plate (14). The bent plate (172) has an integrally formed first sub-plate (1721) and a second sub-plate (1722) that are perpendicular to each other. The first sub-plate (1721) is perpendicularly pressed onto the bottom plate (16), and the flat plate (171) is perpendicularly pressed onto the second sub-plate (1722).

9. The gas box shell of the gas-insulated switchgear as described in claim 6, characterized in that, The sealing assembly (30) further includes a second reinforcing rib (34), which extends along the width direction (W) of the air box shell and is fixed to the surface of the sealing plate (31) facing away from the cavity (11). The second reinforcing rib (34) is connected to one end of the sealing plate (31) along the height direction (H) of the air box shell near the back plate (14).

10. The gas box shell of the gas-insulated switchgear as described in claim 9, characterized in that, The second reinforcing rib (34) is a rectangular tube, and one side of it is attached to and fixedly connected to the sealing plate (31).

11. A gas-insulated switchgear, characterized in that, Includes the gas box shell as described in any one of claims 1 to 10.

Images