Leak repairing device for flange sand hole defect
By setting up a sealing ring in the flange sand hole defects of GIS equipment, the gas leakage problem during the operation of the equipment is solved, the leakage repair effect without disassembly is achieved, and the operation and maintenance cost is reduced.
Patent Information
- Application Number
- CN202420222609.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-30
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-01-30
AI Technical Summary
The housing flange of GIS equipment may have sand hole defects during manufacturing, resulting in leakage channels due to thermal expansion and contraction during operation, resulting in gas leakage. The existing treatment methods require power outage and overall disassembly and replacement, which cannot meet the needs of rapid processing.
A leak-filling device for flange sand hole defects is designed, including a shell, a terminal board, a pressing plate, a screw and a fixing plate. By setting a sealing ring between the fixing plate and the shell flange, the screw is locked on the shell flange. The sealing ring blocks the leakage passage to prevent gas leakage.
It effectively prevents gas leakage, avoids equipment disassembly and replacement, significantly reduces operation and maintenance costs, and meets the needs of rapid processing.
Smart Images
Figure CN222163959U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to GIS equipment, in particular to a leakage repairing device for flange sand hole defects. Background Art
[0002] like Figure 1 As shown, the GIS equipment has a terminal block 2' installed at the flange 11' of its housing 1', and the terminal block 2' is fixed to the flange 11' of the housing 1' by means of a screw 3' and a pressure plate 4'. Since the housing 1' flange 11' of some GIS equipment has sand hole defects during manufacturing, the sand holes are blocked by other foreign objects during the manufacturing stage, and the defects cannot be detected. When the equipment is running, the sand holes are enlarged due to thermal expansion and contraction, and a leakage channel L is formed between the sand holes and the mounting holes. The gas flows out along the leakage channel L, causing leakage, which poses a great risk to the operation of the equipment. The conventional way to deal with leakage requires power outage and overall disassembly and replacement, which takes a long time and is cumbersome. Many substations cannot meet the power outage time requirements. Utility Model Content
[0003] The utility model aims to provide a leakage repairing device for flange sand hole defects which can effectively prevent gas leakage in a shell.
[0004] To achieve the above purpose, the technical solution of the utility model is:
[0005] The utility model is a leak repairing device for flange sand hole defects, comprising a shell, a terminal board, a pressure plate, and a screw rod; the terminal board is sealed on the opening of the top flange of the shell, the outer side of the pressure plate is fixed to the shell flange by the screw rod, and the inner side of the pressure plate is pressed on the outer edge of the terminal board to fix the terminal board to the shell flange; it also includes a fixing plate and a sealing ring; the screw rod passes through the through holes on the pressure plate and the fixing plate from top to bottom in sequence and is then screwed to the shell flange, the lower end of the screw rod is locked with the screw hole on the shell flange, the bottom surface of the fixing plate is tightly fitted with the shell flange, and a sealing ring is provided between the bottom surface of the fixing plate and the shell flange.
[0006] A sealing groove is arranged on the bottom surface of the fixing plate. The sealing groove is arranged around the through hole on the fixing plate. The sealing ring is sleeved in the sealing groove on the bottom surface of the fixing plate.
[0007] The sealing groove on the bottom surface of the fixing plate is circular.
[0008] After adopting the above scheme, since the utility model adds a fixing plate and a sealing ring, a sealing ring is provided between the fixing plate and the shell flange, and the sealing ring is arranged around the screw, and the screw is locked on the shell flange, the leakage channel formed by the sand hole defect of the shell flange will be blocked by the sealing ring on the fixing screw, effectively preventing the leakage of gas in the shell and achieving the effect of leak repair. This leak repair device does not need to disassemble or replace the shell, which greatly reduces the operation and maintenance costs of the substation and equipment manufacturers.
[0009] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a cross-sectional view of the housing of a conventional GIS device;
[0011] Figure 2 It is a cross-sectional view of the utility model;
[0012] Figure 3 yes Figure 2 A partial enlarged view at point A. DETAILED DESCRIPTION
[0013] like Figure 2 , Figure 3 As shown, the utility model is a leakage repair device for flange sand hole defects, comprising a shell 1, a wiring board 2, a pressing plate 3, a screw rod 4, a fixing plate 5, and a sealing ring 6.
[0014] The terminal block 2 is sealed on the opening 12 of the top flange 11 of the shell 1, the outer side of the pressing plate 3 is fixed to the flange 11 of the shell 1 by the screw 4, the inner side of the pressing plate 3 is pressed on the outer edge of the terminal block 2 to fix the terminal block 2 on the shell 1, the screw 4 passes through the through holes 51 on the pressing plate 3 and the fixing plate 5 from top to bottom in sequence and is then screwed to the flange 11 of the shell 1, the lower end of the screw 4 is locked with the screw hole 13 on the flange 11 of the shell 1, the bottom surface of the fixing plate 5 is tightly fitted with the flange 11 of the shell 1, and a sealing ring 6 is provided between the bottom surface of the fixing plate 5 and the flange 11 of the shell 1.
[0015] Furthermore, a sealing groove 52 is formed on the bottom surface of the fixing plate 5 . The sealing groove 52 is arranged around the through hole 51 on the fixing plate 5 . The sealing ring 6 is sleeved in the sealing groove 52 on the bottom surface of the fixing plate 5 .
[0016] In this embodiment, the sealing groove 52 on the bottom surface of the fixing plate 5 is circular.
[0017] The working principle of this utility model:
[0018] The utility model provides a sealing ring 6 between the fixing plate 5 and the flange 11 of the shell 1. The sealing ring 6 is arranged around the screw 4. The screw 4 is locked on the flange 11 of the shell 1. The leakage channel formed by the sand hole defect of the flange 11 of the shell 1 will be blocked by the sealing ring 6 on the screw 4, which effectively prevents the leakage of the gas in the shell 1 and achieves the effect of leak repair.
[0019] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of implementation of the present invention. That is, equivalent changes and modifications made according to the scope of the patent application of the present invention and the contents of the specification should still fall within the scope covered by the patent of the present invention.
Claims
1. A leak repair device for flange sand hole defects, comprising a housing, a wiring board, a pressure plate, and a screw; the wiring board is sealed on the opening of the housing top flange, the outer side of the pressure plate is fixed to the housing flange by a screw, and the inner side of the pressure plate is pressed on the outer edge of the wiring board to fix the wiring board to the housing flange; characterized in that: It also includes a fixing plate and a sealing ring; the screw passes through the through holes on the pressure plate and the fixing plate from top to bottom in sequence and is then screwed to the shell flange, the lower end of the screw is locked with the screw hole on the shell flange, the bottom surface of the fixing plate is tightly fitted with the shell flange, and a sealing ring is provided between the bottom surface of the fixing plate and the shell flange.
2. The leak repairing device for flange sand hole defect according to claim 1 is characterized in that: A sealing groove is arranged on the bottom surface of the fixing plate. The sealing groove is arranged around the through hole on the fixing plate. The sealing ring is sleeved in the sealing groove on the bottom surface of the fixing plate.
3. The device for repairing flange sand hole defects according to claim 2 is characterized in that: The sealing groove on the bottom surface of the fixing plate is circular.