GIS switch shell

Abstract

The invention relates to the technical field of electrical equipment, in particular to a GIS switch shell which comprises an upper shell body and a lower shell body, an annular sealing pipe is arranged between the upper shell body and the lower shell body, the upper end of a connecting channel penetrates through the annular sealing pipe and is communicated with a through hole, and the lower end of the connecting channel is communicated with an inner cavity of the lower shell body; the suspension shaft rod rotates around the axis of the suspension shaft rod and moves in the length direction of the second inner flange, and then the clamping block is driven to move from the inner wall of the lower shell to the circle center of the lower shell. The device has the beneficial effects that the annular sealing pipe is arranged between the upper shell and the lower shell, the thrust spring is arranged in the inner cavity of the annular sealing pipe, the annular sealing pipe and the inner cavity of the lower shell can be communicated with each other, and the air pressure of the inner cavity of the annular sealing pipe and the air pressure of the inner cavity of the lower shell are always kept consistent; no large extrusion force needs to be provided between the upper shell and the lower shell, the sealing performance of the connecting position of the upper shell and the lower shell can be guaranteed, and therefore the situation that the service life of the annular sealing pipe is affected by pressure difference is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment, in particular to a GIS switch housing. Background Art

[0002] GIS is a gas-insulated fully enclosed switchgear, consisting of circuit breakers, disconnectors, earthing switches, transformers, lightning arresters, busbars, connectors and outgoing line terminals. These devices or components are all enclosed in a metal grounded casing and filled with SF6 insulating gas at a certain pressure, so it is also called SF6 fully enclosed switchgear.

[0003] In the prior art, Chinese utility model publication number CN212907534U discloses a safe and compact GIS circuit breaker switch housing. The insulating layer provides insulation, preventing the housing from conducting electricity and improving the safety of the circuit breaker switch housing. The epoxy paint layer also provides waterproof, corrosion-resistant, and wear-resistant properties, thereby extending the service life of the circuit breaker switch housing.

[0004] Currently, split-structure GIS housings typically use a simple gasket as a seal between the upper and lower shells. However, due to the high SF6 gas pressure inside some GIS housings, a high compressive force must be applied between the upper and lower shells to prevent the pressure differential between the inside and outside of the housing from affecting the seal. This easily damages the seal, resulting in a reduced service life. Therefore, the present invention proposes a GIS switch housing to address this issue. Summary of the Invention

[0005] The object of the present invention is to provide a GIS switch housing to solve the problem in the background art that the traditional sealing structure is easily damaged by the pressure difference between the inside and outside of the housing, thereby shortening the service life.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a GIS switch housing, comprising:

[0007] An upper shell and a lower shell, an annular sealing tube is provided between the upper shell and the lower shell, the annular sealing tube is a flexible structure and a thrust spring is provided inside, the thrust spring is vertically arranged, and an upper pressure plate and a lower pressure plate are provided at the upper and lower ends respectively, a through hole is opened through the surface of the lower pressure plate, an inner flange 2 is fixedly connected to the inner wall of the upper end of the lower shell, a connecting channel is opened inside the inner flange 2, the upper end of the connecting channel passes through the annular sealing tube and is connected with the through hole, and the lower end of the connecting channel is connected to the inner cavity of the lower shell;

[0008] A suspension shaft is movably provided on the second inner flange, and the two suspension shafts are provided in a group, and a clamping block is provided between the two suspension shafts. The lower end of the suspension shaft is fixedly connected to a cross plate, and one end of the suspension shaft is rotatably connected to the end of the clamping block. The suspension shaft rotates around its own axis and moves along the length direction of the second inner flange, thereby driving the clamping block to move from the inner wall of the lower shell to the center of the lower shell.

[0009] Preferably, an arc-shaped groove 2 is provided on the upper surface of the lower shell, and the lower side of the surface of the annular sealing tube fits into the arc-shaped groove 2 and is bonded and fixed thereto. There are multiple thrust springs, which are distributed in an annular array along the length direction of the annular sealing tube. Bosses are fixed at the upper and lower ends of the thrust spring, and the two bosses are fixedly connected to the upper pressure plate and the lower pressure plate respectively.

[0010] Preferably, the inner and outer sides of the lower end of the upper shell are fixedly connected with an inner flange and an upper flange respectively, and the outer side of the upper end of the lower shell is fixedly connected with a lower flange, the upper flange and the lower flange are tightened and fixed by bolts, and an outer gasket is provided between the two, and the side of the outer gasket is provided with an inner groove which fits with the surface of the annular sealing tube.

[0011] Preferably, the lower end surface of the upper shell is provided with an arc groove 1, and the arc groove 1 is in contact with the upper surface of the annular sealing tube, an inner gasket is provided between the inner flange 1 and the inner flange 2, and the outer side surface of the inner gasket is provided with an inner groove 2, and the inner groove 2 is in contact with the surface of the annular sealing tube.

[0012] Preferably, a placement groove is provided on the inner side surface of the inner gasket, a disc insulator is arranged between the upper shell and the lower shell, and the edge of the disc insulator is placed on the inner cavity of the placement groove, and an avoidance groove corresponding to the edge of the disc insulator is provided on the lower surface of the inner flange.

[0013] Preferably, an inner flange three is provided on the lower side of the inner flange two, and the inner flange three is fixedly connected to the inner wall of the lower shell body, a guide slot hole is provided on the surface of the inner flange two, and the guide slot hole is stepped, a circular slider is fixed to the upper end of the suspension shaft, and the circular slider is slidably installed in the inner cavity of the guide slot hole, the upper surface of the circular slider is flush with the upper surface of the inner flange two and is provided with friction grooves, and a rubber pad is bonded to the lower surface of the inner gasket, and the rubber pad is pressed on the upper surface of the circular slider.

[0014] Preferably, a slot corresponding to the guide slot is opened on the surface of the inner flange three, and two rings are fixedly provided on the middle part of the suspension shaft, and the two rings are respectively located on the upper and lower sides of the inner flange three.

[0015] Preferably, connecting shafts are fixed at both ends of the lower surface of the clamping block, and the connecting shafts are in an inverted "T" shape. The clamping block is rotationally connected to the horizontal plate through the connecting shafts, and a torsion spring is provided between one end of the horizontal plate and the lower surface of the clamping block.

[0016] Preferably, the horizontal plate and the clamping block are both arranged in an arc shape and fit on the inner wall of the lower shell body, both ends of the upper surface of the clamping block are provided with receiving grooves, the inner cavity of the receiving groove is movably plugged with a connecting rod, and the connecting rod and the inner flange are movably connected through three connections, and a handle is fixedly connected between the upper ends of the two connecting rods.

[0017] Preferably, a connecting plate is fixedly connected between the middle parts of the two connecting rods, and the connecting plate is located below the inner flange three. A telescopic tube is fixedly connected between the connecting plate and the inner flange three. The telescopic tube is made of a flexible material that can undergo elastic deformation, and has a built-in spring in the telescopic tube.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention is provided with an annular sealing tube between the upper shell and the lower shell, and a thrust spring is provided in the inner cavity of the annular sealing tube, and the upper and lower ends of the thrust spring are respectively connected to the upper pressure plate and the lower pressure plate, and a through hole is opened through the surface of the lower pressure plate, and the lower end of the through hole passes through the annular sealing tube, and a connecting channel is opened inside the inner flange 2, and the upper and lower ends of the connecting channel are respectively connected to the through hole and the inner cavity of the lower shell. Therefore, the annular sealing tube and the inner cavity of the lower shell of this device can be connected to each other, and the air pressure in the inner cavity of the annular sealing tube and the inner cavity of the lower shell are always consistent. The thrust spring provides thrust to make the upper and lower pressure plates move away from each other, ensuring that there is no need to provide a large extrusion force between the upper shell and the lower shell, and the sealing of the connection between the two can be guaranteed, thereby avoiding that the service life of the annular sealing tube of this device is affected by the pressure difference BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention;

[0022] Figure 3 For the present invention Figure 2 A schematic diagram of the structure at center A;

[0023] Figure 4 This is a schematic diagram of the separation of the upper shell and the lower shell structure of the present invention;

[0024] Figure 5 This is a three-dimensional schematic diagram of the structure of the inner flange of the present invention;

[0025] Figure 6This is a three-dimensional schematic diagram of the outer gasket ring structure of the present invention;

[0026] Figure 7 This is a three-dimensional schematic diagram of the inner gasket ring structure of the present invention;

[0027] Figure 8 Schematic diagram of the separation of the upper and lower pressing plates of the present invention;

[0028] Figure 9 This is a schematic diagram of the expanded structure of the clamping block of the present invention;

[0029] Figure 10 This is a schematic diagram of the connection between the plug-in rod and the clamping block structure of the present invention.

[0030] In the figure: 1. Upper shell; 11. Upper flange; 12. Inner flange 1; 13. Avoidance groove; 14. Arc groove 1; 2. Lower shell; 21. Lower flange; 211. Arc groove 2; 22. Inner flange 2; 221. Guide slot; 23. Inner flange 3; 3. Outer gasket; 31. Inner groove 1; 4. Disc insulator; 5. Annular sealing tube; 51. Thrust spring; 52. Upper pressure plate; 53. Lower pressure plate; 54. Boss; 55. Through hole; 6. Inner gasket; 61. Placement groove; 62. Inner groove 2; 63. Rubber pad; 7. Connecting channel; 8. Clamping block; 81. Receiving groove; 82. Connecting shaft; 83. Connecting rod; 84. Handle; 85. Connecting plate; 86. Telescopic tube; 9. Suspension shaft; 91. Horizontal plate; 92. Circular slider. DETAILED DESCRIPTION

[0031] In order to clearly and completely describe the objectives and technical solutions of the present invention and make the advantages more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figures 1 to 10 , the present invention provides a technical solution:

[0033] Embodiment 1, a GIS switch housing, includes: an upper housing 1 and a lower housing 2.

[0034] Specifically, an annular sealing tube 5 is provided between the upper shell 1 and the lower shell 2. The annular sealing tube 5 is a flexible structure and a thrust spring 51 is provided inside. The annular sealing tube 5 is hollow inside and can be used to fill gas and expand slightly under the pressure of the gas. The thrust spring 51 is vertically arranged, and an upper pressure plate 52 and a lower pressure plate 53 are provided at the upper and lower ends respectively. The thrust spring 51 provides a thrust to make the upper and lower pressure plates 52 and 53 move away from each other, thereby being able to open the annular sealing tube 5, and the elastic force of the thrust spring 51 itself can offset the contraction force generated after the annular sealing tube 5 expands, ensuring that the annular sealing tube 5 always remains in an expanded state. In addition, if Figure 8 The cam 52 is provided with a plurality of holes 55 on the top of the cam 52 and the bottom of the cam 53, and the holes 55 on the bottom of the cam 53 are connected to each other.

[0035] Secondly, a suspension shaft rod 9 is movably provided on the inner flange 22, and the suspension shaft rod 9 can rotate around its own axis and move a certain distance along the length direction of the inner flange 22. The suspension shaft rods 9 are arranged in groups of two, and a clamping block 8 is provided between the two suspension shaft rods 9. The lower end of the suspension shaft rod 9 is fixedly connected to a cross plate 91, and one end of the suspension shaft rod 9 is rotatably connected to the end of the clamping block 8. The suspension shaft rod 9 rotates around its own axis and moves along the length direction of the inner flange 22, thereby driving the clamping block 8 to move from the inner wall of the lower shell 2 to the center of the circle of the lower shell 2, combined with Figure 4 and Figure 9As shown, when the two suspension shafts 9 are spread out toward each other, the two ends of the clamping block 8 are respectively subjected to the squeezing force of the two cross plates 91. At this time, the two cross plates 91 are symmetrically distributed in an "eight" shape, and the clamping block 8 is squeezed by the cross plates 91 and displaced. The clamping block 8 moves from the inner wall of the lower shell 2 to the center of the circle of the lower shell 2. Therefore, when installing internal electrical components in this device, the cross plates 91 are first folded so that the cross plates 91 and the clamping block 8 are both in contact with the inner wall of the lower shell 2. The clamping block 8 and the cross plates 91 will not hinder the installation of the electrical components. After the electrical components are installed in the inner cavity of the lower shell 2, the clamping block 8 can be moved to fit the surface of the electrical components by unfolding the cross plates 91. By setting at least two clamping blocks 8, the electrical components can be clamped, thereby improving the stability of the electrical components after installation and avoiding position displacement of the electrical components inside the device. At this time, the device can also prevent the electrical components from falling by placing them on the upper side of the clamping block 8.

[0036] In order to ensure that the expansion degree of each position on the annular sealing tube 5 is consistent, the present application also has an arc groove 211 on the upper surface of the lower shell 2. The lower side of the surface of the annular sealing tube 5 fits the arc groove 211 and is bonded and fixed thereto. The setting of the arc groove 211 makes the lower side of the annular sealing tube 5 and the end face of the lower shell 2 have a larger contact area, which improves the stability of the bonding on the one hand, and can effectively avoid the possibility of gas leakage along the surface of the annular sealing tube 5 on the other hand. There are multiple thrust springs 51, which are distributed in an annular array along the length direction of the annular sealing tube 5. The setting of multiple thrust springs 51 makes the upper pressure plate 52 and the lower pressure plate 53 balanced in force at each position. 52 and the lower pressure plate 53 can remain parallel, thereby ensuring that all positions of the annular sealing tube 5 remain in an expanded state, and the expansion of the annular sealing tube 5 will not be affected by the different distances between the upper pressure plate 52 and the lower pressure plate 53. Bosses 54 are fixed at the upper and lower ends of the thrust spring 51, and the two bosses 54 are fixedly connected to the upper pressure plate 52 and the lower pressure plate 53 respectively. The setting of the boss 54 is mainly used to guide and limit the thrust spring 51 to avoid the position of the thrust spring 51 from being offset. In addition, it should be noted that a distance is left between the two corresponding bosses 54 on the upper pressure plate 52 and the lower pressure plate 53, so that the annular sealing tube 5 can undergo a certain elastic deformation after being compressed.

[0037] In order to prevent the annular sealing tube 5 from breaking, the present application also has an inner flange 12 and an upper flange 11 fixedly connected to the inner and outer sides of the lower end of the upper shell 1, and a lower flange 21 fixedly connected to the outer side of the upper end of the lower shell 2. The upper flange 11 and the lower flange 21 are tightened and fixed by bolts, and an outer gasket 3 is provided between the two. Figure 3 and Figure 4As shown, the end faces of the upper shell 1 and the lower shell 2 are close to each other but not fitted together. The gap between the upper shell 1 and the lower shell 2 can be used for the placement of the annular sealing tube 5. The gap between the upper shell 1 and the lower shell 2 is sealed by the expansion of the annular sealing tube 5. The outer gasket 3 is provided to control the size of the gap between the upper shell 1 and the lower shell 2. By replacing the outer gaskets 3 of different thicknesses, the degree to which the upper shell 1 and the lower shell 2 squeeze the annular sealing tube 5 can be changed. An inner groove 31 is provided on the side of the outer gasket 3 and fits the surface of the annular sealing tube 5. The setting of the inner groove 31 can be used to support the outer part of the surface of the annular sealing tube 5 to avoid excessive pressure difference between the internal pressure of the annular sealing tube 5 and the external atmospheric pressure, which causes the outer part of the surface of the annular sealing tube 5 to expand too much or even rupture.

[0038] In order to avoid the position displacement of the annular sealing tube 5, the present application also has an arc groove 14 on the lower end surface of the upper shell 1, and the arc groove 14 is in contact with the upper surface of the annular sealing tube 5. Since the upper shell 1 and the annular sealing tube 5 are only in contact with each other, the contact area between the two can be increased by providing the arc groove 14, thereby improving the sealing performance of the connection between the two. An inner gasket 6 is provided between the inner flange 12 and the inner flange 22. An inner groove 2 62 is provided on the outer side of the inner gasket 6, and the inner groove 2 62 is in contact with the surface of the annular sealing tube 5. The setting of the inner gasket 6 is mainly used to limit the inner part of the surface of the annular sealing tube 5, such as Figure 3 As shown, the upper shell 1, the lower shell 2, the outer gasket 3 and the inner gasket 6 respectively limit the upper, lower, left and right positions of the cross-sectional area of ​​the annular sealing tube 5, thereby avoiding the possibility of position displacement of the annular sealing tube 5. The annular sealing tube 5 can only expand and contract at the specified position. When the annular sealing tube 5 expands, it can achieve a good sealing effect between the upper shell 1 and the lower shell 2, and at the same time avoid the annular sealing tube 5 itself from expanding too much and rupturing.

[0039] In order to isolate the electrical conductors inside the upper shell 1 and the lower shell 2, the present application also has a placement groove 61 on the inner side of the inner gasket 6, and a disc insulator 4 is provided between the upper shell 1 and the lower shell 2, and the edge of the disc insulator 4 is placed on the inner cavity of the placement groove 61. The disc insulator 4 mainly serves to isolate the electrical conductors (such as busbars, moving / static contacts of circuit breakers) from the grounded metal shell (that is, the upper shell 1 and the lower shell 2 of the present device) to prevent discharge to the ground. At the same time, by optimizing the shape (such as the umbrella skirt design) and materials such as epoxy resin / Al2O3 filling, local The electric field is concentrated locally, reducing the risk of partial discharge. In addition, the disc insulator 4 can also support the high-voltage conductor, maintain its spatial position stable, and prevent displacement or vibration. A avoidance groove 13 corresponding to the edge of the disc insulator 4 is opened on the lower surface of the inner flange 12. By placing the edge of the disc insulator 4 on the inner cavity of the placement groove 61 and the edge of the disc insulator 4 corresponding to the avoidance groove 13, the installation and positioning of the disc insulator 4 can be achieved, and the upper shell 1 and the lower shell 2 can be prevented from generating excessive squeezing force on the edge of the disc insulator 4, which may cause damage to it.

[0040] In order to realize the positioning of the suspension shaft 9, the present application also has an inner flange 3 23 provided on the lower side of the inner flange 22, and the inner flange 3 23 is fixedly connected to the inner wall of the lower shell 2, the inner diameter of the inner flange 3 23 is consistent with the inner diameter of the inner flange 22, or smaller than the inner diameter of the inner flange 22, a guide slot 221 is provided on the surface of the inner flange 22, and the guide slot 221 is stepped, and a circular slider 92 is fixed to the upper end of the suspension shaft 9, and the circular slider 92 is slidably installed in the inner cavity of the guide slot 221, as shown in FIG. Figure 9 As shown, the circular slider 92 can slide in the inner cavity of the guide slot 221 along its length direction, thereby driving the suspension shaft 9 to move its position. At the same time, since the circular slider 92 is a circular structure, the circular slider 92 and the suspension shaft 9 itself can rotate. The upper surface of the circular slider 92 is flush with the upper surface of the inner flange 22 and is provided with friction grooves. The lower surface of the inner gasket 6 is bonded with a rubber pad 63, and the rubber pad 63 is pressed on the upper surface of the circular slider 92. When the upper shell 1 and the lower shell 2 are close to each other and the outer gasket 3 and the inner gasket 6 are pressed, the rubber pad 63 on the lower surface of the inner gasket 6 can press the circular slider 92. At this time, the friction between the rubber pad 63 and the circular slider 92 can simultaneously position the sliding and rotation of the circular slider 92. That is to say, before the upper shell 1 and the lower shell 2 of this device are installed, the suspension shaft 9 can rotate and move at will, and when the upper shell 1 and the lower shell 2 are installed and connected, the suspension shaft 9 can be automatically positioned.

[0041] In order to prevent the suspension shaft 9 from tilting, the present application also has a slot corresponding to the guide slot 221 opened on the surface of the inner flange 3 23, and two rings are fixedly sleeved on the middle part of the suspension shaft 9, and the two rings are respectively located on the upper and lower sides of the inner flange 3 23, such as Figure 9 As shown, the slots on the surface of the inner flange three 23 cooperate with the ring in the middle of the suspension shaft 9, which can effectively improve the stability of the suspension shaft 9 during movement and prevent the suspension shaft 9 from tilting. In addition, the ring and the circular slider 92 are pressed on the upper surfaces of the inner flange three 23 and the inner flange two 22 respectively, which can be used to provide good support for the suspension shaft 9 and ensure that when the inner gasket 6 presses down the circular slider 92, the circular slider 92 and the suspension shaft 9 will not move downward.

[0042] In order to support or clamp the electrical conductors in the inner cavity of the lower shell 2, the present application also has connecting shafts 82 fixed at both ends of the lower surface of the clamping block 8, and the connecting shaft 82 is in an inverted "T" shape. The clamping block 8 is rotatably connected to the cross plate 91 through the connecting shaft 82. Since the end of the clamping block 8 and the end of the cross plate 91 are rotatably connected, the clamping block 8 can move with it when the suspension shaft 9 moves and rotates. The staff can actively pull the clamping block 8 to drive the suspension shaft 9 and the cross plate 91 to move and rotate accordingly. When the clamping block 8 is pulled horizontally to a position close to the center of the inner cavity of the lower shell 2, part of the electrical conductors in the inner cavity of the lower shell 2 can be placed on the clamping block 8. In addition, a torsion spring is provided between one end of the cross plate 91 and the lower surface of the clamping block 8, and there is always a connection between the clamping block 8 and the cross plate 91. Figure 9 As shown in the expansion trend, by arranging multiple clamping blocks 8 (at least two) inside the lower shell 2, the multiple clamping blocks 8 can automatically gather together, thereby clamping and positioning the electrical conductors in the inner cavity of the lower shell 2, thereby improving the stability of the electrical conductors installed in the inner cavity of the lower shell 2.

[0043] In order to stably fit the clamping block 8 on the inner wall of the lower shell 2 and prevent it from being easily unfolded, the transverse plate 91 and the clamping block 8 of the present application are both arranged in an arc shape and fit on the inner wall of the lower shell 2. The transverse plate 91 and the clamping block 8 can be accommodated between the second inner flange 22 and the third inner flange 23 to reduce the space occupied in the middle area of ​​the inner cavity of the lower shell 2, thereby avoiding the electrical conductor from being obstructed by the clamping block 8 in the process of being placed from top to bottom into the inner cavity of the lower shell 2. That is to say, the inner diameter of the lower shell 2 of the present device can be set smaller, and it is only necessary for the power supply conductor to pass through the second inner flange 22 and the third inner flange 23. In addition, on the two upper surfaces of the clamping block 8, the inner diameter of the lower shell 2 can be set smaller, and the power supply conductor only needs to pass through the second inner flange 22 and the third inner flange 23. Both ends are provided with a receiving groove 81, the inner cavity of the receiving groove 81 is movably plugged with a connecting rod 83, and the connecting rod 83 is movably connected to the inner flange three 23, and a handle 84 is fixedly connected between the upper ends of the two connecting rods 83. The staff can pull out the connecting rod 83 from the inner cavity of the receiving groove 81 or insert the connecting rod 83 into the inner cavity of the receiving groove 81 by moving the handle 84 up and down. When the connecting rod 83 is plugged and connected to the receiving groove 81, the clamping block 8 can be stably fitted on the inner wall of the lower shell 2 and will not be unfolded due to the action of the torsion spring. When the connecting rod 83 is separated from the receiving groove 81, the clamping block 8 can automatically unfold under the action of the torsion spring.

[0044] In order to prevent the connecting rod 83 from being easily withdrawn from the inner cavity of the receiving groove 81, the present application also has a connecting plate 85 fixedly connected between the middle parts of the two connecting rods 83, and the connecting plate 85 is located below the inner flange three 23. The setting of the connecting plate 85 is used to prevent the connecting rod 83 and the inner flange three 23 from separating from each other. A telescopic tube 86 is fixedly connected between the connecting plate 85 and the inner flange three 23. The telescopic tube 86 is made of a flexible material that can undergo elastic deformation, and the telescopic tube 86 has a built-in spring. The built-in spring of the telescopic tube 86 always provides thrust, so that the connecting rod 83 always has a tendency to move downward. When the staff pushes the clamping block 8 to fit the inner wall of the lower shell 2, the connecting rod 83 is automatically inserted into the inner cavity of the receiving groove 81 under the action of the spring and continues to remain stable.

[0045] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A GIS switch housing, characterized in that: include: An upper shell (1) and a lower shell (2), an annular sealing tube (5) is provided between the upper shell (1) and the lower shell (2), the annular sealing tube (5) is a flexible structure and a thrust spring (51) is provided inside the annular sealing tube (5), the thrust spring (51) is vertically arranged, and an upper pressure plate (52) and a lower pressure plate (53) are provided at the upper and lower ends respectively, a through hole (55) is provided through the surface of the lower pressure plate (53), the upper end inner wall of the lower shell (2) is fixedly connected with an inner flange 2 (22), a connecting channel (7) is provided inside the inner flange 2 (22), the upper end of the connecting channel (7) passes through the annular sealing tube (5) and is connected to the through hole (55), and the lower end of the connecting channel (7) is connected to the inner cavity of the lower shell (2); A suspension shaft (9) is movably provided on the inner flange 2 (22), and the suspension shafts (9) are provided in groups of two, and a clamping block (8) is provided between the two suspension shafts (9). The lower end of the suspension shaft (9) is fixedly connected to a transverse plate (91), and one end of the suspension shaft (9) is rotatably connected to the end of the clamping block (8). The suspension shaft (9) rotates around its own axis and moves along the length direction of the inner flange 2 (22), thereby driving the clamping block (8) to move from the inner wall of the lower shell (2) to the center of the circle of the lower shell (2).

2. A GIS switch housing according to claim 1, characterized in that: The upper surface of the lower shell (2) is provided with an arc groove 2 (211), the lower side of the surface of the annular sealing tube (5) is in contact with the arc groove 2 (211) and is bonded and fixed thereto, a plurality of thrust springs (51) are provided and distributed in an annular array along the length direction of the annular sealing tube (5), and bosses (54) are fixed at both upper and lower ends of the thrust spring (51), and the two bosses (54) are respectively fixedly connected to the upper pressure plate (52) and the lower pressure plate (53).

3. The GIS switch housing according to claim 2, characterized in that: The inner and outer sides of the lower end of the upper shell (1) are fixedly connected to an inner flange (12) and an upper flange (11), respectively. The outer side of the upper end of the lower shell (2) is fixedly connected to a lower flange (21). The upper flange (11) and the lower flange (21) are tightened and fixed by bolts, and an outer gasket (3) is provided between the two. The side of the outer gasket (3) is provided with an inner groove (31) and is in contact with the surface of the annular sealing tube (5).

4. The GIS switch housing according to claim 3, characterized in that: The lower end surface of the upper shell (1) is provided with an arc-shaped groove (14), and the arc-shaped groove (14) is in contact with the upper surface of the annular sealing tube (5); an inner gasket (6) is provided between the inner flange (12) and the inner flange (22); the outer side surface of the inner gasket (6) is provided with an inner groove (62), and the inner groove (62) is in contact with the surface of the annular sealing tube (5).

5. The GIS switch housing according to claim 4, characterized in that: The inner side surface of the inner gasket (6) is provided with a placement groove (61), a disc insulator (4) is arranged between the upper shell (1) and the lower shell (2), and the edge of the disc insulator (4) is placed on the inner cavity of the placement groove (61), and the lower surface of the inner flange (12) is provided with an avoidance groove (13) corresponding to the edge of the disc insulator (4).

6. The GIS switch housing according to claim 5, characterized in that: An inner flange three (23) is provided on the lower side of the inner flange two (22), and the inner flange three (23) is fixedly connected to the inner wall of the lower shell (2); a guide slot hole (221) is provided on the surface of the inner flange two (22), and the guide slot hole (221) is stepped; a circular slider (92) is fixed to the upper end of the suspension shaft (9); the circular slider (92) is slidably installed in the inner cavity of the guide slot hole (221); the upper surface of the circular slider (92) is flush with the upper surface of the inner flange two (22) and is provided with friction grooves; a rubber pad (63) is bonded to the lower surface of the inner gasket (6), and the rubber pad (63) is pressed on the upper surface of the circular slider (92).

7. The GIS switch housing according to claim 6, characterized in that: The surface of the inner flange three (23) is provided with a slot hole corresponding to the guide slot hole (221), and the middle part of the suspension shaft (9) is fixedly sleeved with two rings, and the two rings are respectively located on the upper and lower sides of the inner flange three (23).

8. The GIS switch housing according to claim 7, characterized in that: Connecting shafts (82) are fixed at both ends of the lower surface of the clamping block (8), and the connecting shafts (82) are in an inverted "T" shape. The clamping block (8) is rotatably connected to the transverse plate (91) via the connecting shafts (82), and a torsion spring is provided between one end of the transverse plate (91) and the lower surface of the clamping block (8).

9. The GIS switch housing according to claim 8, characterized in that: The transverse plate (91) and the clamping block (8) are both arranged in an arc shape and fit on the inner wall of the lower shell (2); both ends of the upper surface of the clamping block (8) are provided with a receiving groove (81); a plug-in rod (83) is movably inserted into the inner cavity of the receiving groove (81); and the plug-in rod (83) is movably connected to the inner flange three (23); and a handle (84) is fixedly connected between the upper ends of the two plug-in rods (83).

10. The GIS switch housing according to claim 9, characterized in that: A connecting plate (85) is fixedly connected between the middle parts of the two connecting rods (83), and the connecting plate (85) is located below the inner flange three (23). A telescopic tube (86) is fixedly connected between the connecting plate (85) and the inner flange three (23). The telescopic tube (86) is made of a flexible material that can undergo elastic deformation, and the telescopic tube (86) has a built-in spring.

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