CN202927351U - Transverse expansion joint for gas insulated switchgear - Google Patents
Transverse expansion joint for gas insulated switchgear Download PDFInfo
- Publication number
- CN202927351U CN202927351U CN 201220618553 CN201220618553U CN202927351U CN 202927351 U CN202927351 U CN 202927351U CN 201220618553 CN201220618553 CN 201220618553 CN 201220618553 U CN201220618553 U CN 201220618553U CN 202927351 U CN202927351 U CN 202927351U
- Authority
- CN
- China
- Prior art keywords
- expansion joint
- ring flange
- pipeline
- connecting ring
- transverse expansion
- 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.)
- Expired - Lifetime
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- Gas-Insulated Switchgears (AREA)
Abstract
The utility model provides a transverse expansion joint for a gas insulated switchgear and particularly relates to the transverse expansion joint as a position compensating and pipeline sealing device of a GIS (gas insulated switchgear). The utility model aims at providing an expansion joint as the position compensating and pipeline sealing device of the GIS for solving the problems that an SF6 gas insulating medium is filled inside the GIS and works in a high electric field gradient environment. The transverse expansion joint is mainly characterized in that a left side ring flange, a left side corrugated pipe, an intermediate pipe, a right side corrugated pipe and a right side ring flange are sequentially connected, wherein a support plate is fixedly arranged on the intermediate pipe; through holes for allowing pull rods to penetrate through are formed in the left connecting ring flange, the right connecting ring flange and the support plate; the pull rods with fastening nuts penetrate through the through holes in the left connecting ring flange, the right connecting ring flange and the support plate; and the fastening nuts are rotated to two sides of each connecting ring flange. The transverse expansion joint disclosed by the utility model has the positive effects that the displacement for the axial direction of a pipeline can be absorbed, the displacement from the radial direction of the pipeline can be absorbed and the thrust force generated by the pressure in the pipeline can be borne.
Description
Technical field
The utility model relates to the expansion joint in a kind of fully closed combined electric unit (English full name is Gas lnsulated Switchgear or Gas Insulated Substation, and it is abbreviated as GIS), is a kind of lateral mode expansion joint specifically.It is used for sulphur hexafluoride (SF
6) sealing of gas insulated metal enclosed swit chgear electric transmission line.
Background technique
Fully closed combined electric unit (GIS) has been widely used in modern electric production and transportation art.Electric pressure is higher, and its technical economic benefit is better.Along with the fast development of Chinese society economy, the continuous growth of electricity need load, more and more higher to the requirement of power supply reliability.The advantages such as GIS is little with its floor space, and is safe and reliable to operation, and the repair cycle is long, and is easy for installation have become the leading equipment in secondary distribution system.
GIS inner filling SF
6Gas-insulated medium, and work in high electric-force gradient environment, so need a kind of as the position compensation of GIS and the expansion joint of seal for pipe joints device, be used for regulating that installation deviation, detaching equipment, compensates cause expands with heat and contract with cold and the effect such as vibration damping and vibration isolation, also will have the performances such as the high cycle-index of low stress.
Summary of the invention
For solving the problems of the technologies described above, the purpose of this utility model is to provide a kind of lateral mode expansion joint.
The purpose of this utility model is achieved in that it comprises bellows, intervalve, dunnage, mounting flange and pull bar, left side flange plate, left side bellows, intervalve, right side bellows are connected with the right side flange plate and are connected, fixed support plate on intervalve, on left and right two mounting flanges and dunnage, the through hole that can allow pull bar pass is set, pass through hole on left and right two mounting flanges and dunnage with the pull bar of tightening nut, tightening nut is threaded to the both sides of each mounting flange, pull bar is fastened on mounting flange.During use, the mounting flange on the pipeline of mounting flange of the present utility model and GIS is connected.
Must not there be cusp and gap in expansion joint inside.Expansion joint will satisfy the GIS pipeline to the bubble-tight requirement of sulphur hexafluoride.
Compared with prior art, good effect of the present utility model is: can absorb the displacement from pipeline axial, also can absorb from pipeline displacement radially, and can bear the thrust that produces because of the pressure in pipeline, can avoid internal discharge.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the left view of Fig. 1.
Embodiment
Left side flange plate 3, left-hand end pipe 11, left side bellows 4, intervalve 7, right side bellows 10, right-hand end pipe 8 are connected with the right side flange plate and are connected successively, fix two a pair of dunnages 6 of arranging vertically on intervalve; On left and right two mounting flanges and two dunnages, the through hole that can allow pull bar pass is set, pass through hole on left and right two mounting flanges and dunnage with the pull bar 5 of tightening nut 2, tightening nut is threaded to the both sides of each mounting flange, and pull bar is fastened on flange plate.Said pull bar is four or six, evenly is arranged on the circumference of flange plate, and correspondingly dunnage is also six pairs, evenly is arranged on the circumference of intervalve.In order to alleviate the weight of each flange plate, the flange disk body between adjacent two tapped holes or unthreaded hole can be rejected, referring to Fig. 2.
During use, the mounting flange on the pipeline of flange plate of the present utility model and GIS is connected.
Claims (3)
1. lateral mode expansion joint, it is characterized in that: it comprises bellows, intervalve, dunnage, mounting flange and pull bar, left side flange plate, left side bellows, intervalve, right side bellows are connected with the right side flange plate and are connected, fixed support plate on intervalve, on left and right two mounting flanges and dunnage, the through hole that can allow pull bar pass is set, pass through hole on left and right two mounting flanges and dunnage with the pull bar of tightening nut, tightening nut is threaded to the both sides of each mounting flange.
2. according to lateral mode expansion joint claimed in claim 1, it is characterized in that: fix two a pair of dunnages of arranging vertically on intervalve.
3. according to lateral mode expansion joint claimed in claim 2, it is characterized in that: said pull bar is six, evenly is arranged on the circumference of flange plate, and correspondingly dunnage is also six pairs, evenly is arranged on the circumference of intervalve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220618553 CN202927351U (en) | 2012-11-21 | 2012-11-21 | Transverse expansion joint for gas insulated switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220618553 CN202927351U (en) | 2012-11-21 | 2012-11-21 | Transverse expansion joint for gas insulated switchgear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202927351U true CN202927351U (en) | 2013-05-08 |
Family
ID=48217312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220618553 Expired - Lifetime CN202927351U (en) | 2012-11-21 | 2012-11-21 | Transverse expansion joint for gas insulated switchgear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202927351U (en) |
-
2012
- 2012-11-21 CN CN 201220618553 patent/CN202927351U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130508 |