A double-sealed GIS housing

Abstract

The utility model discloses a double -walled sealed GIS shell relates to GIS shell technical field, the utility model discloses a GIL shell and the connecting pipe no.

Description

Technical Field

[0001] This utility model belongs to the field of GIS shell technology, and in particular relates to a double-sealed GIS shell. Background Technology

[0002] With the rapid development of power systems towards intelligence and high reliability, gas-insulated switchgear (GIS) has become a core piece of equipment in the power transmission and transformation field. Its advantages, such as small footprint, excellent insulation performance, and low operation and maintenance costs, have led to a continuous increase in demand for GIS in the construction of ultra-high voltage and extra-high voltage power grids. The GIS housing, as the core load-bearing and sealing component of the equipment, directly determines the leakage rate of insulating gases such as sulfur hexafluoride inside the equipment, thus affecting the insulation reliability and operational safety of the GIS. Therefore, a high-performance, double-sealed GIS housing is needed to ensure the long-term stable operation of the equipment.

[0003] However, during long-term operation, the sealing rings of existing GIS housings are prone to aging and wear, which can lead to leakage of internal insulating gas. This not only reduces the insulation performance of the equipment but also increases the risk of insulation failure. Utility Model Content

[0004] The purpose of this invention is to provide a double-sealed GIS housing. By setting an inner sealing part, it solves the problem that in the long-term operation of existing GIS housings, the sealing ring is prone to aging and wear, which leads to leakage of internal insulating gas, not only reducing the insulation performance of the equipment, but also increasing the risk of insulation failure.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a double-sealed GIS housing, comprising a GIL housing and a connecting pipe 1 disposed on the top of the GIL housing, with a connecting pipe 2 disposed above the connecting pipe 1. It also includes: an inner sealing part mounted on the connecting pipe 1; an outer sealing part disposed above the GIL housing; the inner sealing part includes a mounting assembly mounted on the connecting pipe 2; and a compensation assembly mounted on the mounting assembly. The mounting assembly includes mounting flanges fixedly connected to the connecting pipe 1 and the connecting pipe 2 on their respective adjacent sides. The bottom of the upper mounting flange has an annular rectangular groove, within which an annular rectangular shell is fixedly connected. An annular limiting plate is slidably connected within the annular rectangular shell, and an annular sealing ring is fixedly connected to the bottom of the annular limiting plate. The bottom of the annular rectangular shell is open, and the annular sealing ring is located at the opening of the annular rectangular shell, forming the basis for effective sealing.

[0006] Furthermore, the outer sealing portion includes a sealing assembly disposed above the GIL housing; a fixing assembly mounted on the sealing assembly; and the sealing assembly located on the outer wall of the two mounting flanges.

[0007] Furthermore, the compensation component includes several telescopic rods fixedly connected to the inner wall of the top of the annular rectangular shell. The bottom of each telescopic rod is fixedly connected to an annular limiting plate. A spring is sleeved on the outer wall of each telescopic rod. The top of each spring is fixedly connected to the inner wall of the top of the annular rectangular shell, and the bottom of each spring is fixedly connected to the annular limiting plate. The telescopic rods and springs are arranged in a circumferential array and are all in a compressed state, thereby automatically compensating for wear, maintaining a stable sealing effect, and greatly extending the effective life of the sealing system.

[0008] Furthermore, the sealing assembly includes two semi-circular shells disposed on the outer walls of the two mounting flanges. The two semi-circular shells are hinged together, and two semi-circular sealing strips are fixedly connected to the sides of the two semi-circular shells that are close to each other. Two sealing strips are fixedly connected to the side of the rear semi-circular shell that is close to the front semi-circular shell. Four semi-circular sealing strips are provided, which are respectively located on the arc surfaces of the two semi-circular shells that are close to each other, thereby constructing a complete and independent external sealing cavity in addition to the inner seal.

[0009] Furthermore, the fixing component includes a grooved rectangular block fixedly connected to the right side of the semi-circular shell located on the front side. A rectangular limiting plate is slidably connected to the inner wall of the grooved rectangular block. Two sliding rods are fixedly connected to the inner wall of the grooved rectangular block. Both sliding rods pass through the rectangular limiting plate. The rectangular limiting plate is slidably connected to the two sliding rods. A rectangular support block is fixedly connected to the right side of the rectangular limiting plate. The side of the rectangular support block away from the rectangular limiting plate extends to the outside of the telescopic rod. The rectangular support block is slidably connected to the grooved rectangular block. Elastic elements are provided on the two sliding rods. A locking element is provided on the rectangular support block. Two sliding rods are arranged in a mirror image, with a rectangular support block located between them. The elastic element includes two springs respectively fitted onto the outer walls of the two sliding rods. The left sides of both springs are fixedly connected to a rectangular limiting plate, and the right sides of both springs are fixedly connected to the inner right wall of the grooved rectangular block. The two springs are arranged in a mirror image. The locking element includes a fixing block fixedly connected to the side of the rectangular support block away from the rectangular limiting plate, and a limiting block fixedly connected to the outer wall of the semi-circular shell located on the rear side. The fixing block and the limiting block are adapted to each other. The fixing block is L-shaped to ensure that the outer sealing cover will not loosen during long-term operation.

[0010] This utility model has the following beneficial effects: 1. By setting an internal sealing part, the connecting pipe 2 is connected to the GIL housing via two mounting flanges through the connecting pipe 1. The upper mounting flange drives the annular sealing ring to move with the annular rectangular shell, so that it is in close contact with the lower mounting flange to ensure sealing stability. When the annular sealing ring ages and wears due to long-term use, the compressed spring 1 and the telescopic rod will push the annular limiting plate to slide down inside the annular rectangular shell, thereby pushing the annular sealing ring to continue to be in close contact with the lower mounting flange. This effectively avoids sealing failure caused by aging and wear of the sealing ring, ensures the long-term sealing stability of the connection between the GIL housing and the connecting pipe, and reduces the risk of equipment failure caused by sealing problems. 2. By setting an external sealing part, two semi-circular shells are placed around the two mounting flanges and joined together. The semi-circular shells drive the corresponding semi-circular sealing strips to make tight contact with the outer walls of connecting pipe one and connecting pipe two, and the two semi-circular shells are sealed by the sealing strips. At the same time, the semi-circular shells drive the grooved rectangular block and the limiting block to move closer. The grooved rectangular block drives the fixed block to move through the rectangular support block. The limiting block squeezes the fixed block to move it to the right. The fixed block drives the rectangular limiting plate to slide inside the grooved rectangular block and on the slide rod through the rectangular support block and squeeze the second spring. When the fixed block and the limiting block are aligned, the spring force pushes the rectangular limiting plate through the rectangular support block to drive the fixed block to reset, so that the fixed block is locked into the limiting block. This completes the fixing of the two semi-circular shells to ensure sealing stability and avoid the problem of insulation gas leakage caused by poor initial sealing. It further ensures the sealing stability in long-term use, effectively reduces the risk of sealing failure, and reduces the difficulty of operation and maintenance.

[0011] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural schematic diagram of the GIL shell of this utility model; Figure 3 This is a partial cross-sectional view of the inner sealing part of this utility model; Figure 4 This is a partial exploded cross-sectional view of the mounting assembly of this utility model; Figure 5 This is a partial cross-sectional exploded view of the outer sealing part of this utility model; Figure 6 This utility model Figure 5 A magnified structural diagram of A in the middle.

[0014] The attached diagram lists the components represented by each number as follows: 111. GIL housing; 112. Connecting pipe one; 113. Connecting pipe two; 2. Inner sealing part; 21. Mounting assembly; 211. Mounting flange; 212. Annular rectangular groove; 213. Annular rectangular shell; 214. Annular limiting plate; 215. Annular sealing ring; 22. Compensation assembly; 221. Telescopic rod; 222. Spring one; 3. Outer sealing part; 31. Sealing assembly; 311. Semi-circular shell; 312. Semi-circular sealing strip; 313. Sealing strip; 32. Fixing assembly; 321. Grooved rectangular block; 322. Rectangular limiting plate; 323. Slide rod; 324. Rectangular support block; 325. Spring two; 326. Fixing block; 327. Limiting block. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-6 As shown, this utility model is a double-sealed GIS housing, including a GIL housing 111 and a connecting pipe 112 connected to the top of the GIL housing 111. A connecting pipe 113 is provided above the connecting pipe 112. It also includes: an inner sealing part 2, which is installed on the connecting pipe 112; and an outer sealing part 3, which is provided above the GIL housing 111.

[0017] The inner sealing part 2 includes a mounting assembly 21, which is mounted on the connecting pipe 113; and a compensation assembly 22, which is mounted on the mounting assembly 21. The mounting assembly 21 includes mounting flanges 211 fixedly connected to the connecting pipe 112 and the connecting pipe 113 on their respective adjacent sides. The bottom of the upper mounting flange 211 has an annular rectangular groove 212. An annular rectangular shell 213 is fixedly connected inside the annular rectangular groove 212. An annular limiting plate 214 is slidably connected inside the annular rectangular shell 213. An annular sealing ring 215 is fixedly connected to the bottom of the annular limiting plate 214. The bottom of the annular rectangular shell 213 is open, and the annular sealing ring 215 is located at the opening of the annular rectangular shell 213. The compensation assembly 22 includes components fixedly connected to the annular rectangular shell 213. Several telescopic rods 221 on the top inner wall of the GIL housing 213 are fixedly connected at the bottom to an annular limiting plate 214. Springs 222 are sleeved on the outer walls of the telescopic rods 221. The tops of the springs 222 are fixedly connected to the top inner wall of the annular rectangular shell 213, and the bottoms of the springs 222 are fixedly connected to the annular limiting plate 214. The telescopic rods 221 and springs 222 are arranged in a circumferential array and are in a compressed state. By setting the inner sealing part 2, the sealing failure caused by the aging and wear of the sealing ring is effectively avoided, ensuring the long-term sealing stability of the connection between the GIL housing 111 and the connecting pipe, and reducing the risk of equipment failure caused by sealing problems.

[0018] The outer sealing part 3 includes a sealing assembly 31, which is disposed above the GIL housing 111; and a fixing assembly 32, which is mounted on the sealing assembly 31. The sealing assembly 31 is located on the outer wall of the two mounting flanges 211. The sealing assembly 31 includes two semi-circular shells 311 disposed on the outer wall of the two mounting flanges 211. The two semi-circular shells 311 are hinged together. Two semi-circular sealing strips 312 are fixedly connected to the side of the two semi-circular shells 311 that are close to each other. Two semi-circular sealing strips 312 are fixedly connected to the side of the rear semi-circular shell 311 that is close to the front semi-circular shell 311. Sealing strip 313; Four semi-circular sealing strips 312 are provided, respectively located on the arc surface of the two semi-circular shells 311 that are close to each other. The fixing component 32 includes a grooved rectangular block 321 fixedly connected to the right side of the front semi-circular shell 311. A rectangular limiting plate 322 is slidably connected to the inner wall of the grooved rectangular block 321. Two sliding rods 323 are fixedly connected to the inner wall of the grooved rectangular block 321. Both sliding rods 323 pass through the rectangular limiting plate 322. The rectangular limiting plate 322 is slidably connected to the two sliding rods 323. A rectangular support block 3 is fixedly connected to the right side of the rectangular limiting plate 322. 24. The rectangular support block 324 extends beyond the rectangular limiting plate 322 to the outside of the telescopic rod 221. The rectangular support block 324 is slidably connected to the grooved rectangular block 321. Elastic elements are provided on the two sliding rods 323, and a locking element is provided on the rectangular support block 324. The two sliding rods 323 are mirror images of each other, with the rectangular support block 324 located between them. The elastic elements include springs 325 respectively sleeved on the outer walls of the two sliding rods 323. The left sides of both springs 325 are fixedly connected to the rectangular limiting plate 322, and the right sides of both springs 325 are fixedly connected to the grooved rectangular block 221. The inner right wall of the rectangular block 321 is fixedly connected; the two springs 325 are mirror images of each other; the locking component includes a fixing block 326 fixedly connected to the side of the rectangular support block 324 away from the rectangular limiting plate 322; the outer wall of the semi-circular shell 311 located on the rear side is fixedly connected to a limiting block 327; the fixing block 326 and the limiting block 327 are adapted to each other; the fixing block 326 is L-shaped; by setting the outer sealing part 3, the problem of insulation gas leakage caused by the initial poor sealing is avoided, further ensuring the sealing stability during long-term use, effectively reducing the risk of sealing failure, and reducing the difficulty of operation and maintenance.

[0019] A specific application of this embodiment is as follows: In use, the connecting pipe 213 is connected to the GIL housing 111 via the connecting pipe 112 through two mounting flanges 211. At this time, the upper mounting flange 211 moves the annular sealing ring 215 through the annular rectangular housing 213 and makes tight contact with the lower mounting flange 211, thereby ensuring the sealing stability between the two mounting flanges 211. During long-term use, the annular sealing ring 215 will age and wear. At this time, several springs 222 and several telescopic rods are used to... Under the compression of 221, several springs 222 and several telescopic rods 221 push the annular limiting plate 214 to slide downward within the annular rectangular shell 213. At this time, the annular limiting plate 214 pushes the annular sealing ring 215 to move, thereby ensuring that the annular sealing ring 215 is in close contact with the mounting flange 211 located below, covering the two semi-circular shells 311 around the two mounting flanges 211. Then, the two semi-circular shells 311 are merged. At this time, the two semi-circular shells 311 respectively drive the corresponding two semi-circular sealing strips 312 and... The outer walls of connecting pipe 112 and connecting pipe 213 are in close contact. At this time, the two semi-circular shells 311 are sealed by two sealing strips 313. During this process, the two semi-circular shells 311 respectively drive the grooved rectangular block 321 and the limiting block 327 to move and approach each other. At this time, the grooved rectangular block 321 drives the fixed block 326 to move through the rectangular support block 324. At this time, the limiting block 327 will squeeze the fixed block 326, causing the fixed block 326 to move to the right. At this time, the fixed block 326 is supported by the rectangular support block 324. The rectangular limiting plate 322 slides within the grooved rectangular block 321 and on the two sliding rods 323, thereby compressing the two springs 325. This causes the two springs 325 to deform and generate elastic force. When the fixing block 326 corresponds to the limiting block 327, under the action of the elastic force of the two springs 325, the rectangular limiting plate 322 drives the fixing block 326 to reset through the rectangular support block 324, and causes the fixing block 326 to be inserted into the limiting block 327, thereby fixing the two semi-circular shells 311 and ensuring the stability of the seal.

[0020] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0021] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A double-sealed GIS housing, comprising a GIL housing (111) and a connecting pipe (112) disposed on the top of the GIL housing (111), wherein a connecting pipe (113) is disposed above the connecting pipe (112), characterized in that, Also includes: The inner sealing part (2) is installed on the connecting pipe (112); An outer sealing part (3) is disposed above the GIL housing (111); The inner sealing part (2) includes a mounting assembly (21) which is mounted on the connecting pipe (113); and Compensation component (22), which is mounted on mounting component (21); The mounting assembly (21) includes mounting flanges (211) that are fixedly connected to the connecting pipe one (112) and the connecting pipe two (113) on their respective sides. The bottom of the mounting flange (211) located above is provided with an annular rectangular groove (212). An annular rectangular shell (213) is fixedly connected in the annular rectangular groove (212). An annular limiting plate (214) is slidably connected in the annular rectangular shell (213). An annular sealing ring (215) is fixedly connected to the bottom of the annular limiting plate (214). The bottom of the annular rectangular shell (213) is open, and the annular sealing ring (215) is located at the opening of the annular rectangular shell (213).

2. The double-sealed GIS housing according to claim 1, characterized in that, The outer sealing part (3) includes a sealing assembly (31) disposed above the GIL housing (111); as well as A fixing component (32) is mounted on a sealing component (31); The sealing assembly (31) is located on the outer wall of the two mounting flanges (211).

3. The double-sealed GIS housing according to claim 2, characterized in that, The compensation component (22) includes a plurality of telescopic rods (221) fixedly connected to the inner wall of the top of the annular rectangular shell (213). The bottom of each of the telescopic rods (221) is fixedly connected to the annular limiting plate (214). The outer wall of each of the telescopic rods (221) is fitted with a spring (222). The top of each of the springs (222) is fixedly connected to the inner wall of the top of the annular rectangular shell (213). The bottom of each of the springs (222) is fixedly connected to the annular limiting plate (214). Among them, several telescopic rods (221) and several springs (222) are arranged in a circular array, and several telescopic rods (221) and several springs (222) are in a compressed state.

4. A double-sealed GIS housing according to claim 3, characterized in that, The sealing assembly (31) includes two semi-circular shells (311) disposed on the outer walls of two mounting flanges (211), the two semi-circular shells (311) are hinged together, and two semi-circular sealing strips (312) are fixedly connected to the side of the two semi-circular shells (311) that are close to each other. Two sealing strips (313) are fixedly connected to the side of the rear semi-circular shell (311) that is close to the front semi-circular shell (311). Among them, four semicircular sealing strips (312) are provided, which are located on the arc surface of the two semicircular shells (311) that are close to each other.

5. A double-sealed GIS housing according to claim 4, characterized in that, The fixing component (32) includes a grooved rectangular block (321) fixedly connected to the right side of the semi-circular shell (311) located on the front side. A rectangular limiting plate (322) is slidably connected to the inner wall of the grooved rectangular block (321). Two sliding rods (323) are fixedly connected to the inner wall of the grooved rectangular block (321). Both sliding rods (323) pass through the rectangular limiting plate (322). The rectangular limiting plate (322) is slidably connected to the two sliding rods (323). A rectangular support block (324) is fixedly connected to the right side of the rectangular limiting plate (322). The side of the rectangular support block (324) away from the rectangular limiting plate (322) extends to the outside of the telescopic rod (221). The rectangular support block (324) is slidably connected to the grooved rectangular block (321). Elastic elements are provided on the two sliding rods (323). A locking element is provided on the rectangular support block (324). The two slide bars (323) are set in a mirror image, and the rectangular support block (324) is located between the two slide bars (323).

6. A double-sealed GIS housing according to claim 5, characterized in that, The elastic element includes two springs (325) respectively sleeved on the outer wall of two slide rods (323). The left side of each of the two springs (325) is fixedly connected to a rectangular limiting plate (322), and the right side of each of the two springs (325) is fixedly connected to the inner right side wall of a grooved rectangular block (321). Among them, the two springs (325) are set in a mirror image.

7. A double-sealed GIS housing according to claim 6, characterized in that, The locking component includes a fixing block (326) fixedly connected to the side of the rectangular support block (324) away from the rectangular limiting plate (322), and a limiting block (327) fixedly connected to the outer wall of the semi-circular shell (311) located on the rear side. The fixing block (326) and the limiting block (327) are adapted to each other. The fixed block (326) is L-shaped.

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