GIS sleeve head sealing structure

Abstract

The utility model relates to the technical field of GIS (Gas Insulated Switchgear) bushings, in particular to a GIS bushing head sealing structure, which comprises a bushing main body, a mounting cylinder is mounted at the top end of the bushing main body, a sealing top cover is clamped at the top end of the mounting cylinder through a locking mechanism, a sealing sleeve is mounted at a port of the top end of the mounting cylinder, and a sealing cover is mounted at the port of the top end of the sealing sleeve. The inner wall of the sealing sleeve is attached to the outer wall of the sealing top cover, the locking mechanism comprises a butt joint assembly and a clamping assembly, the butt joint assembly is used for preliminarily splicing the sealing top cover to the mounting cylinder, and the clamping assembly is used for locking or unlocking the position of the sealing top cover. The butt joint assembly comprises butt joint blocks installed at the two ends of the bottom of the sealing top cover, and butt joint grooves in sliding connection with the butt joint blocks are formed in the two ends of the top of the installation cylinder. The tool is simple in structure and convenient to operate, the sealing top cover can be quickly disassembled and assembled by workers through pressing and rotating, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of GIS casings, in particular to a GIS casing head sealing structure. Background Art

[0002] At present, the main design of the sealing structure of the head of the dry GIS outlet bushing is that the sealing cover is screwed on the core body through threads, a triangular groove is opened on the core body, and the sealing ring is installed in the triangular groove for sealing. When using this sealing structure, if the sealing cover thread is not screwed to the bottom, it cannot be guaranteed that the sealing ring has sufficient compression. However, when the dry GIS outlet bushing is in operation, the general working pressure range used needs to be within 0.4~0.5Mpa. Therefore, the sealing performance may fail after long-term operation, thereby affecting the electrical performance of the entire bushing.

[0003] In order to solve the above technical problems, a Chinese patent with announcement number CN213844900U in the prior art discloses a dry GIS outlet bushing head sealing structure, including a conductive rod, a core body is arranged on the outside of the conductive rod, and an umbrella skirt is arranged on the outside of the core body: a sealing cover is installed at the end of the conductive rod, the sealing cover is threadedly connected to the outer circumferential surface of the core body at the end of the conductive rod, a sealing ring is arranged between the sealing cover and the conductive rod, and between the sealing cover and the core body, there is a gap between the sealing cover and the umbrella skirt at the end of the conductive rod, and an adhesive is filled in the gap: an end cover is installed on the outer end face of the sealing cover.

[0004] Although the above-mentioned prior art solution can enhance the bearing capacity of the GIS outlet casing head components, it is still connected by rotating the thread one circle at a time during installation, which is cumbersome and requires filling adhesive in the gap, which is not convenient for subsequent disassembly and maintenance of internal parts, affecting work efficiency. Utility Model Content

[0005] The utility model aims to provide a GIS casing head sealing structure to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A GIS casing head sealing structure comprises a casing body, a mounting tube is installed at the top of the casing body, a sealing top cover is clamped at the top of the mounting tube through a locking mechanism, a sealing sleeve is installed at the top end port of the mounting tube, the inner wall of the sealing sleeve is fitted to the outer wall of the sealing top cover, the locking mechanism comprises a docking assembly and a clamping assembly, the docking assembly is used to preliminarily splice the sealing top cover onto the mounting tube, and the clamping assembly is used to lock or unlock the fixation of the sealing top cover.

[0008] As a preferred solution of the utility model, the docking assembly includes docking blocks installed at both ends of the bottom of the sealing top cover, both ends of the top of the mounting tube are provided with docking grooves slidably connected to the docking blocks, a first inclined surface is provided at the bottom end of one side of the docking block, and a second inclined surface is provided on one side of the docking block above the first inclined surface.

[0009] The lockhole that is formed on the upper part of the body is formed on the second slant surface of the body, and the lockhole that is formed on the upper part of the body is formed on the second slant surface of the body.

[0010] As a preferred solution of the utility model, extension grooves are provided on both sides of the outer side of the mounting tube, a knob is rotatably connected to the inner side of the extension groove, a sliding groove is provided on the outside of the mounting tube on one side of the extension groove, a sliding plate is slidably connected to the inner side of the sliding groove, and one end of the knob extends to the inner side of the mounting groove and is fixedly connected to one end of the movable rod.

[0011] As a preferred solution of the utility model, a connecting groove extending to the inner wall of the extension groove is provided on one side of the inner wall of the sliding groove, a connecting block is slidably connected to the inner side of the connecting groove, one end of the connecting block is fixedly connected to one end of the sliding plate, magnetic blocks are embedded and installed at both ends of the sliding plate, iron blocks adsorbed by the magnetic blocks are embedded and installed on the inner wall of the extension groove and the sliding groove, and a buckle groove is provided on one side of the sliding plate.

[0012] As a preferred solution of the utility model, a limiting plate is installed at one end of the extrusion block, and a limiting groove slidably connected to the limiting plate is opened on the inner wall of the installation groove.

[0013] As a preferred solution of the utility model, a first rubber sealing pad is installed at the bottom of the sealing top cover located on the outside of the docking block, and a second rubber sealing pad is embedded and installed at the top of the sealing sleeve.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] In the utility model, the sealing top cover can be preliminarily spliced ​​on the installation cylinder through the docking assembly, and the clamping assembly can lock or unlock the fixation of the sealing top cover position. The utility model has a simple structure and is easy to operate. One press and one turn make it convenient for workers to quickly disassemble and assemble the sealing top cover, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure of part A;

[0018] Figure 3 It is a partial cross-sectional structural schematic diagram of the connection between the installation cylinder and the sealing top cover of the utility model.

[0019] In the figure: 1. sleeve body; 2. mounting tube; 3. sealing top cover; 4. second rubber sealing pad; 5. connecting groove; 6. knob; 7. sliding plate; 8. sealing sleeve; 9. magnetic block; 10. docking block; 11. first inclined surface; 12. movable rod; 13. extrusion block; 14. first rubber sealing pad; 15. positioning plate; 16. first spring; 17. limit plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Example

[0021] See also Figure 1-Figure 3 , the utility model provides a technical solution:

[0022] A GIS casing head sealing structure comprises a casing body 1, a mounting tube 2 is installed at the top of the casing body 1, a sealing top cover 3 is clamped at the top of the mounting tube 2 through a locking mechanism, a sealing sleeve 8 is installed at the top end port of the mounting tube 2, the inner wall of the sealing sleeve 8 is fitted to the outer wall of the sealing top cover 3, the locking mechanism comprises a docking assembly and a clamping assembly, the docking assembly is used to preliminarily splice the sealing top cover 3 on the mounting tube 2, the clamping assembly is used to lock or unlock the fixation of the position of the sealing top cover 3, the casing can be preliminarily spliced ​​on the mounting tube 2 through the docking assembly when in use, the clamping assembly can lock or unlock the fixation of the position of the sealing top cover 3, the structure is simple, the operation is convenient, and the staff can quickly disassemble and assemble the sealing top cover 3 by pressing and turning, thereby improving the work efficiency.

[0023] In this embodiment, if Figure 1 , Figure 2 and Figure 3 As shown, the docking assembly includes docking blocks 10 installed at both ends of the bottom of the sealing top cover 3, and both ends of the top of the installation tube 2 are provided with docking grooves slidably connected to the docking blocks 10. A first inclined surface 11 is provided at the bottom end of one side of the docking block 10, and a second inclined surface is provided on one side of the docking block 10 above the first inclined surface 11. First, the sealing top cover 3 is placed on the top of the installation tube 2 so that part of the docking block 10 enters the docking groove, and the sealing top cover 3 is fitted with the sealing sleeve 8 to complete the preliminary splicing.

[0024] In this embodiment, if Figure 1 , Figure 2 and Figure 3 As shown, the clamping assembly includes a mounting groove opened in the mounting tube 2, the inner side of the mounting groove is connected with the inner side of the docking groove, a movable rod 12 is rotatably connected to one side of the inner wall of the mounting groove, an extrusion block 13 is sleeved on the outer side of the movable rod 12, a third inclined surface that fits with the first inclined surface 11 is opened on one side of the extrusion block 13, a fourth inclined surface that fits with the second inclined surface is opened on the outer side of the extrusion block 13, a positioning groove is opened on one side of the extrusion block 13 corresponding to the third inclined surface, a positioning rod is rotatably connected to the inner side of the positioning groove, a positioning plate 15 is sleeved on the outer side of the positioning rod, a fifth inclined surface is opened on one side of the positioning plate 15, a torsion spring is installed at one end of the outer side of the positioning rod, a fixing groove is opened on the outer wall of the extrusion block 13 located on one side of the positioning groove, a fixing rod is installed on the inner side of the fixing groove, a first spring 16 is installed on the outer side of the fixing rod, and the other end of the first spring 16 is installed on the inner wall of the mounting groove, a locking groove is opened on one side of the docking block 10 corresponding to the second inclined surface, a limiting plate 17 is installed on one end of the extrusion block 13, and a The limiting groove slidably connected to the limiting plate 17 is then continuously pressed downward so that the first inclined surface 11 and the second inclined surface contact the third inclined surface and the fourth inclined surface, so that the extrusion block 13 cooperates with the limiting plate 17 and the limiting groove to expand around the movable rod 12, and at the same time the first spring 16 is also stretched, and the sealing top cover 3 and the docking block 10 are continuously pressed, and the second inclined surface and the first inclined surface 11 compress the fifth inclined surface on the positioning plate 15, forcing it to retract to the inner side of the positioning groove. After it is aligned with the locking groove, the torsion spring rebounds and drives the positioning plate 15 to expand inside the positioning groove. At this time, the first rubber sealing pad 14 and the second rubber sealing pad 4 are both in a compressed state, and then the sealing top cover 3 is released, and the first rubber sealing pad 14 and the second rubber sealing pad 4 rebound for a distance, so that the positioning plate 15 is against the inner wall of the positioning groove, and the fixing of the sealing top cover 3 is completed. When disassembling, the rotating knob 6 drives the movable rod 12 to rotate, so that the extrusion block 13 actively stretches the first spring 16, and the positioning plate 15 can be separated from the positioning groove, and the disassembly can be completed by removing it.

[0025] In this embodiment, if Figure 1 , Figure 2and Figure 3 As shown, both sides of the outer side of the mounting tube 2 are provided with extension grooves, and the inner side of the extension groove is rotatably connected with a knob 6, and the outer side of the mounting tube 2 is provided with a sliding groove on one side of the extension groove, and a sliding plate 7 is slidably connected to the inner side of the sliding groove, one end of the knob 6 extends to the inner side of the mounting groove and is fixedly connected to one end of the movable rod 12, and a connecting groove 5 extending to the inner wall of the extension groove is provided on one side of the inner wall of the sliding groove, and a connecting block is slidably connected to the inner side of the connecting groove 5, and one end of the connecting block is fixedly connected to one end of the sliding plate 7, and magnetic blocks 9 are embedded and installed at both ends of the sliding plate 7, and iron blocks adsorbed by the magnetic blocks 9 are embedded and installed on the inner walls of the extension groove and the sliding groove, and a buckle groove is provided on one side of the sliding plate 7. Furthermore, buckling the buckle groove can cooperate with the connecting groove 5 and the connecting block to drive the sliding plate 7 to move toward the inner side of the extension groove, so that one group of magnetic blocks 9 and the iron block fit and adsorb to cover the knob 6, so that it is accidentally touched by people.

[0026] In this embodiment, if Figure 1 , Figure 2 and Figure 3 As shown, a first rubber sealing pad 14 is installed on the outside of the docking block 10 at the bottom of the sealing top cover 3, and a second rubber sealing pad 4 is embedded in the top of the sealing sleeve 8. Furthermore, the first rubber sealing pad 14 is attached to the top surface of the mounting tube 2, and the second rubber sealing pad 4 is attached to the outer wall of the sealing top cover 3, thereby ensuring the sealing effect.

[0027] The implementation principle of a GIS casing head sealing structure in the embodiment of the present application is as follows: the sealing top cover 3 is placed on the top of the installation tube 2 so that part of the docking block 10 enters the docking groove, the sealing top cover 3 is fitted with the sealing sleeve 8, and the initial splicing is completed. Continue to press downward so that the first inclined surface 11 and the second inclined surface are in contact with the third inclined surface and the fourth inclined surface, so that the extrusion block 13 cooperates with the limiting plate 17 and the limiting groove to expand around the movable rod 12, and the first spring 16 is also stretched at the same time, and the sealing top cover 3 and the docking block 10 are continued to be pressed. The second inclined surface and the first inclined surface 11 press the fifth inclined surface on the positioning plate 15, forcing it to retract to the inside of the positioning groove. After it is aligned with the locking groove, the torsion spring rebounds and drives the positioning plate 15 to expand inside the positioning groove. At this time, the first rubber sealing pad 14 and the second rubber sealing pad 15 are in contact with each other. The sealing gaskets 4 are all in a compressed state, and then the sealing top cover 3 is loosened, the first rubber sealing gasket 14 and the second rubber sealing gasket 4 rebound a distance, so that the positioning plate 15 is against the inner wall of the positioning groove, and the sealing top cover 3 can be fixed. When disassembling, the knob 6 is rotated to drive the movable rod 12 to rotate, so that the extrusion block 13 actively stretches the first spring 16, and the positioning plate 15 can be separated from the positioning groove. At this time, the removal is completed. The buckle and pull groove can cooperate with the connecting groove 5 and the connecting block to drive the sliding plate 7 to move toward the inside of the extension groove, so that one group of magnetic blocks 9 and the iron block are fitted and adsorbed to cover the knob 6. Anyway, it is accidentally touched by people. The first rubber sealing gasket 14 is fitted to the top surface of the installation tube 2, and the second rubber sealing gasket 4 is fitted to the outer wall of the sealing top cover 3, ensuring the sealing effect.

[0028] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A GIS casing head sealing structure, comprising a casing body (1), characterized in that: A mounting tube (2) is installed at the top end of the sleeve body (1), and a sealing top cover (3) is clamped at the top end of the mounting tube (2) through a locking mechanism. A sealing sleeve (8) is installed at the top end port of the mounting tube (2), and the inner wall of the sealing sleeve (8) is in contact with the outer wall of the sealing top cover (3). The locking mechanism comprises a docking assembly and a clamping assembly. The docking assembly is used to preliminarily splice the sealing top cover (3) onto the mounting tube (2), and the clamping assembly is used to lock or unlock the position of the sealing top cover (3).

2. The GIS casing head sealing structure according to claim 1, characterized in that: The docking assembly comprises docking blocks (10) installed at both ends of the bottom of the sealing top cover (3); both ends of the top of the installation tube (2) are provided with docking grooves slidably connected to the docking blocks (10); a first inclined surface (11) is provided at the bottom end of one side of the docking block (10); and a second inclined surface is provided on one side of the docking block (10) above the first inclined surface (11).

3. The GIS casing head sealing structure according to claim 2, characterized in that: The clamping assembly comprises a mounting groove provided inside the mounting tube (2), the inner side of the mounting groove being connected to the inner side of the docking groove, a movable rod (12) being rotatably connected to one side of the inner wall of the mounting groove, an extrusion block (13) being sleeved on the outer side of the movable rod (12), a third inclined surface being fitted with the first inclined surface (11) being provided on one side of the extrusion block (13), a fourth inclined surface being fitted with the second inclined surface being provided on the outer side of the extrusion block (13) and a positioning groove being provided on one side of the extrusion block (13) corresponding to the third inclined surface, A positioning rod is rotatably connected to the inner side of the positioning groove, a positioning plate (15) is sleeved on the outer side of the positioning rod, a fifth inclined surface is provided on one side of the positioning plate (15), a torsion spring is installed at one end of the outer side of the positioning rod, a fixing groove is provided on the outer wall of the extrusion block (13) at one side of the positioning groove, a fixing rod is installed on the inner side of the fixing groove, a first spring (16) is installed on the outer side of the fixing rod, and the other end of the first spring (16) is installed on the inner wall of the installation groove, and a locking groove is provided on one side of the docking block (10) corresponding to the second inclined surface.

4. The GIS casing head sealing structure according to claim 3, characterized in that: Extension grooves are provided on both sides of the outer side of the installation tube (2), and a knob (6) is rotatably connected to the inner side of the extension groove. A sliding groove is provided on the outer side of the installation tube (2) on one side of the extension groove, and a sliding plate (7) is slidably connected to the inner side of the sliding groove. One end of the knob (6) extends to the inner side of the installation groove and is fixedly connected to one end of the movable rod (12).

5. The GIS casing head sealing structure according to claim 4, characterized in that: A connecting groove (5) extending to the inner wall of the extension groove is provided on one side of the inner wall of the sliding groove, a connecting block is slidably connected to the inner side of the connecting groove (5), one end of the connecting block is fixedly connected to one end of the sliding plate (7), both ends of the sliding plate (7) are embedded with magnetic blocks (9), the inner wall of the extension groove and the sliding groove are embedded with iron blocks adsorbed by the magnetic blocks (9), and a buckling groove is provided on one side of the sliding plate (7).

6. The GIS casing head sealing structure according to claim 5, characterized in that: A limiting plate (17) is installed at one end of the extrusion block (13), and a limiting groove slidably connected to the limiting plate (17) is provided on the inner wall of the installation groove.

7. The GIS casing head sealing structure according to claim 6, characterized in that: A first rubber sealing pad (14) is installed at the bottom of the sealing top cover (3) located outside the docking block (10), and a second rubber sealing pad (4) is embedded and installed at the top of the sealing sleeve (8).

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