CN214247936U - Flange face bolt gap plugging device - Google Patents
Flange face bolt gap plugging device Download PDFInfo
- Publication number
- CN214247936U CN214247936U CN202022557217.6U CN202022557217U CN214247936U CN 214247936 U CN214247936 U CN 214247936U CN 202022557217 U CN202022557217 U CN 202022557217U CN 214247936 U CN214247936 U CN 214247936U
- Authority
- CN
- China
- Prior art keywords
- sealing
- flange
- nut
- plugged
- cap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 140
- 238000002788 crimping Methods 0.000 claims abstract description 14
- 230000000694 effects Effects 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 15
- 210000004907 gland Anatomy 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
Images
Abstract
The utility model discloses a flange bolt gap plugging device, which comprises a sealing nut and a sealing cap which are matched with a flange crimping bolt of equipment to be plugged; the sealing cap comprises a top cap with an opening at one end, and a sealing flange matched with the sealing nut in a shape fitting manner is arranged at the opening end of the top cap; the sealing nut is connected between the sealing cap and a flange of the device to be plugged in a sealing mode. When the plugging device is used for plugging the metal flange surface of the GIS equipment, firstly two flange crimping bolts on the diagonal line of the GIS equipment are dismounted, then sealing nuts are respectively arranged at two ends of the flange crimping bolts of the equipment to be plugged, and then sealing caps are covered to ensure that the sealing nuts and the sealing caps are compacted; and then repeating the steps until all the nuts on all the flange crimping bolts are replaced, so that the sealing performance of the flange gap position is recovered to be normal. The tool is low in cost, simple to install and good in plugging effect.
Description
Technical Field
The utility model relates to a flange face bolt gap plugging device.
Background
The SF6 gas has good electrical insulation performance and excellent arc extinguishing performance. The electric strength of the material is 2.5 times of that of nitrogen under the same pressure, the breakdown voltage is 2.5 times of that of air, and the arc extinguishing capability is 100 times of that of air, so that the material is a new generation of ultrahigh-voltage insulating dielectric material superior to air and insulating oil. But is often accompanied by problems of SF6 gas leakage during its use. The influence is mainly reflected in two aspects: on the one hand, the electrical insulation and arc extinguishing performance of the SF6 gas are closely related to the pressure, and the insulation performance and the arc extinguishing performance are both greatly reduced when the pressure is reduced, and are only equivalent to insulating oil when the gas pressure is reduced to about 0.3 MPa. If the gas leakage point can not be well treated, the gas must be supplemented frequently to meet the working requirement, thus greatly increasing the cost of maintenance and use; on the other hand, the SF6 gas is an important greenhouse effect gas and is very harmful to the environment. In the GIS equipment metal flange surface tightness problem, the proportion of gas escaping from flange gaps, bolts and flange gap nuts and between bolts and nuts is about 80 percent due to aging or damage failure of sealing elements.
In order to solve the problem of gas leakage of gaps of metal flanges, patent application No. 202010280218.2 discloses a plugging method applied to an SF6 gas leakage flange of GIS equipment, which plugs the metal flanges by adopting a flange surface full-coating pressure relief plugging method, so that the actual plugging effect is better, but the material cost is higher, the operation is long in time consumption and the labor intensity is high. Due to the fact that the coating range is large, although the adsorbent is placed inside, a large amount of SF6 gas is accumulated under the condition of long-time operation, the final pressure of SF6 gas in the coating cavity and SF6 gas in a GIS gas chamber is balanced, and whether foreign matters which are not thoroughly cleaned affect normal operation of GIS equipment cannot be verified.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a flange face bolt gap plugging device to solve the problem that present GIS equipment metal flange face shutoff cost is higher, the operation is long consuming time.
In order to solve the technical problem, the utility model provides a flange face bolt gap plugging device, which comprises a sealing nut and a sealing cap which are matched with a flange crimping bolt of equipment to be plugged; the sealing cap comprises a top cap with an opening at one end, and a sealing flange matched with the sealing nut in a shape fitting manner is arranged at the opening end of the top cap; the sealing nut is connected between the sealing cap and a flange of the device to be plugged in a sealing mode.
Further, a first sealing device is arranged between the sealing nut and a flange of the device to be plugged.
Further, the first sealing device comprises a first sealing groove surrounding a threaded hole of the sealing nut, the first sealing groove is formed by inwards recessing one side, facing the flange of the equipment to be plugged, of the sealing nut, and a first sealing ring is arranged in the first sealing groove.
Further, the first sealing device is a sealing gasket arranged between the sealing nut and a flange of the device to be plugged.
Further, a second sealing device is arranged between the sealing nut and the sealing flange of the sealing cap.
Further, the second sealing device comprises a second sealing groove surrounding a threaded hole of the sealing nut, the second sealing groove is formed by inwards recessing one side, facing the sealing flange of the sealing cap, of the sealing nut, and a second sealing ring is arranged in the second sealing groove.
Further, the first sealing device is a sealing gasket arranged between the sealing nut and a flange of the device to be plugged.
The utility model has the advantages that: when the plugging device is used for plugging the metal flange surface of the GIS equipment, firstly two flange crimping bolts on the diagonal line of the GIS equipment are dismounted, then sealing nuts are respectively arranged at two ends of the flange crimping bolts of the equipment to be plugged, and then sealing caps are covered to ensure that the sealing nuts and the sealing caps are compacted; and then repeating the steps until all the nuts on all the flange crimping bolts are replaced, so that the sealing performance of the flange gap position is recovered to be normal. The tool is low in cost, simple to install and good in plugging effect.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a bottom view of a gland nut according to an embodiment of the present invention.
Fig. 3 is a cross-sectional view a-a of fig. 2 according to an embodiment of the present invention.
Fig. 4 is a top view of a sealing cap according to an embodiment of the present invention.
Wherein: 1. a seal nut; 11. a first seal groove; 12. a second seal groove; 13. an internal thread; 2. a top cap; 21. sealing the flange; 3. and the flange is in compression joint with the bolt.
Detailed Description
The device for plugging the bolt gap on the flange surface as shown in fig. 1 comprises a sealing nut 1 and a sealing cap which are matched with a flange crimping bolt 3 of equipment to be plugged, wherein the sealing nut 1 and the sealing cap are both provided with internal threads 13 matched with the flange crimping bolt 3. The sealing cap comprises a top cap 2 with an opening at one end, and a sealing flange 21 in fit with the sealing nut 1 is arranged at the opening end of the top cap 2; the sealing nut 1 is connected between the sealing cap and a flange of the device to be plugged in a sealing mode.
When the plugging device is used for plugging a metal flange surface of GIS equipment, firstly two flange crimping bolts 3 on a diagonal line of the GIS equipment are dismounted, then sealing nuts 1 are respectively arranged at two ends of the flange crimping bolts 3 of the equipment to be plugged, and then sealing caps are covered to ensure that the sealing nuts 1 and the sealing caps are compacted; and then repeating the steps until all the nuts on all the flange crimping bolts 3 are replaced, so that the sealing performance of the flange gap position is recovered to be normal. The tool is low in cost, simple to install and good in plugging effect.
A first sealing device is arranged between the sealing nut 1 and a flange of equipment to be plugged, and the sealing performance between the sealing nut 1 and the flange of the equipment to be plugged can be improved by arranging the first sealing device.
The first sealing device can be a sealing gasket arranged between the sealing nut 1 and a flange of the equipment to be plugged; as shown in fig. 2 and 3, the sealing device may also be a first sealing groove 11 disposed around the threaded hole of the gland nut 1, the first sealing groove 11 is formed by inward recessing of one side of the gland nut 1 facing the flange of the device to be plugged, and a first sealing ring is disposed in the first sealing groove 1. This application is through setting up first seal groove 11 on gland nut 1, then is in with first sealing washer setting in first seal groove 11, can guarantee the stability of first sealing washer, further guarantee sealed effect.
And a second sealing device is arranged between the sealing nut 1 and the sealing flange 21 of the sealing cap, and the sealing performance between the sealing nut 1 and the sealing flange 21 of the sealing cap can be improved by arranging the second sealing device.
The second sealing device can be a sealing gasket arranged between the sealing nut 1 and a flange of the equipment to be plugged; fig. 3 shows that a second sealing groove 12 may also be provided around the threaded hole of the gland nut 1, the second sealing groove 12 is formed by inward recessing of the side of the gland nut 1 facing the sealing flange 21 of the sealing cap, and a second sealing ring is provided in the second sealing groove 12. This application is through setting up second seal groove 12 on gland nut 1, then sets up the second sealing washer in second seal groove 12, can guarantee the stability of sealing washer, further guarantee sealed effect.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (6)
1. A flange face bolt gap plugging device is characterized by comprising a sealing nut and a sealing cap which are matched with a flange crimping bolt of equipment to be plugged; the sealing cap comprises a top cap with an opening at one end, and a sealing flange matched with the sealing nut in a shape fitting manner is arranged at the opening end of the top cap; the sealing nut is connected between the sealing cap and a flange of the device to be plugged in a sealing mode.
2. The device for plugging the bolt gap on the flange face according to the claim 1, characterized in that a first sealing device is arranged between the sealing nut and the flange of the device to be plugged.
3. The device for plugging the bolt gap on the flange face according to claim 2, wherein the first sealing device comprises a first sealing groove arranged around the threaded hole of the sealing nut, the first sealing groove is formed by inwards recessing one side of the sealing nut facing the flange of the equipment to be plugged, and a first sealing ring is arranged in the first sealing groove.
4. The device for plugging the bolt gap on the flange face according to the claim 2, wherein the first sealing device is a sealing gasket arranged between a sealing nut and the flange of the device to be plugged.
5. The device for plugging the bolt gap on the flange surface according to claim 1, wherein a second sealing device is arranged between the sealing nut and the sealing flange of the sealing cap.
6. The device for plugging the bolt gap on the flange face according to claim 5, wherein the second sealing device comprises a second sealing groove disposed around the threaded hole of the sealing nut, the second sealing groove is formed by inward recessing of one side of the sealing nut facing the sealing flange of the sealing cap, and a second sealing ring is disposed in the second sealing groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022557217.6U CN214247936U (en) | 2020-11-08 | 2020-11-08 | Flange face bolt gap plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022557217.6U CN214247936U (en) | 2020-11-08 | 2020-11-08 | Flange face bolt gap plugging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214247936U true CN214247936U (en) | 2021-09-21 |
Family
ID=77731587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022557217.6U Active CN214247936U (en) | 2020-11-08 | 2020-11-08 | Flange face bolt gap plugging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214247936U (en) |
-
2020
- 2020-11-08 CN CN202022557217.6U patent/CN214247936U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2845261Y (en) | Outdoor terminal of 220 KV crosslinked cable | |
| CN214247936U (en) | Flange face bolt gap plugging device | |
| CN213394022U (en) | Flange assembly for gas insulation equipment and gas insulation equipment | |
| CN112325045A (en) | Flange surface grading pressure relief plugging tool and plugging method | |
| CN201554850U (en) | Sealing structure | |
| CN209545119U (en) | Cable termination | |
| CN109879288B (en) | Sealing structure and method for polycrystalline silicon reduction furnace | |
| CN205724757U (en) | A kind of pressure-fired system of isolated-phase enclosed bus | |
| CN211405248U (en) | Double-sealing GIS shell | |
| CN201623396U (en) | Gas-insulated high voltage switchgear | |
| CN216489411U (en) | Insulator, gas-insulated metal-enclosed switchgear and power system | |
| CN210296247U (en) | Sealing structure suitable for outdoor 10kV SF6 circuit breaker | |
| CN1503421A (en) | Dry terminal for high-voltage cross-linked cable gas-insulation switch and installation method | |
| CN210606836U (en) | Lightning arrester with stable structure and protective capability | |
| JP3031159B2 (en) | Sealed container and method of assembling the same | |
| EP4306825A1 (en) | Improved compression sealing gasket and sealing system | |
| CN216598171U (en) | Explosion-proof sealing movable joint | |
| CN109545524B (en) | Novel transformer sleeve | |
| CN217422306U (en) | Sealing structure of safety valve | |
| KR200212628Y1 (en) | Polymer lightning arrester | |
| CN201129454Y (en) | Gas sealing device | |
| CN219571183U (en) | Vacuum sealing flange and vacuum equipment | |
| CN203339473U (en) | Sealing device used for sparking plug of gas engine | |
| CN219975079U (en) | Multi-layer type sealing threaded fastener | |
| CN217425585U (en) | High tension cable withstand voltage test frock |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |