CN112212113A - Flexible compensator for axial deformation to radial deformation of GIL - Google Patents
Flexible compensator for axial deformation to radial deformation of GIL Download PDFInfo
- Publication number
- CN112212113A CN112212113A CN202011212902.3A CN202011212902A CN112212113A CN 112212113 A CN112212113 A CN 112212113A CN 202011212902 A CN202011212902 A CN 202011212902A CN 112212113 A CN112212113 A CN 112212113A
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- CN
- China
- Prior art keywords
- gil
- hinge plate
- compensator
- corrugated
- deformation
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube
- F16L51/03—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube comprising two or more bellows
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube
- F16L51/03—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube comprising two or more bellows
- F16L51/035—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube comprising two or more bellows for cancelling the axial loading resulting from fluid pressure
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a flexible compensator for axial deformation to radial deformation of GIL, which comprises a GIL line and corrugated compensators, wherein two ends of each corrugated compensator are fixedly arranged on a horizontal section of the right-angle GIL line in pairs through connecting flanges, and one corrugated compensator is arranged close to the right-angle end on the horizontal section; the connecting flange is fixedly provided with directional hinges which are horizontally clamped at two sides of the axis of the corrugated compensator; the directional hinge comprises a first hinge plate and a second hinge plate which are arranged oppositely, the first hinge plate and the second hinge plate are L-shaped, one opposite sides of the first hinge plate and the second hinge plate are overlapped and rotatably connected, and the other sides of the first hinge plate and the second hinge plate are fixedly connected with the connecting flange through a fixing plate clamped on the outer side. The invention aims to provide a method for absorbing deformation generated by a GIL shaft structure so as to prevent damage of a GIL shell and a pipeline support caused by extrusion or stretching.
Description
Technical Field
The invention relates to the technical field of GIL equipment, in particular to a flexible compensator for axial deformation to radial deformation of GIL.
Background
The cable is widely applied to transmission lines of 550kV and below, but is limited by insulating materials and structures, and the current-carrying capacity of a single cable has a bottleneck which is difficult to break through. Compared with a GIS bus, the gas insulated metal enclosed transmission line (GIL) has the advantages of simple structure, more flexible arrangement mode and low unit cost, and is the best scheme for replacing overhead transmission lines and cable transmission lines in special environments.
The GIL is a long-distance rigid power transmission line, particularly has multiple arrangement forms of gentle slopes, horizontal sections, straight line sections, overhead, inclined shafts and the like, is greatly different from the application environment of the GIS, the height of the GIL vertical shaft is generally tens of meters or even hundreds of meters, the GIS is not provided with a vertical shaft structure, and the common non-proportional corners, small angles and the like in the GIL are greatly different from the GIS. Therefore, how to absorb the thermal expansion and the deformation of other displacements through the pipeline mechanics is a way of effectively preventing the GIL shell and the support from being damaged due to the factors of the temperature, the dead weight, the internal pressure, the external load and the like of the pipeline. Therefore, there is a need for a GIL shaft structure that absorbs the deformation of the GIL shaft structure to prevent damage to the GIL housing and the pipe support due to compression or stretching.
Disclosure of Invention
The present invention is directed to overcome the above-mentioned shortcomings in the prior art, and aims to provide a method for absorbing deformation generated in a GIL shaft structure to prevent damage to a GIL housing and a pipe support due to extrusion or stretching.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a flexible compensator for axial deformation to radial deformation of GIL comprises a GIL line and corrugated compensators, wherein two ends of each corrugated compensator are fixedly arranged on a horizontal section of a right-angle GIL line in pairs through connecting flanges, and one corrugated compensator is arranged close to a right-angle end on the horizontal section; the connecting flange is fixedly provided with directional hinges which are horizontally clamped at two sides of the axis of the corrugated compensator; the directional hinge comprises a first hinge plate and a second hinge plate which are arranged oppositely, the first hinge plate and the second hinge plate are L-shaped, one opposite sides of the first hinge plate and the second hinge plate are overlapped and rotatably connected, and the other sides of the first hinge plate and the second hinge plate are fixedly connected with the connecting flange through a fixing plate clamped on the outer side.
Furthermore, a U-shaped clamping plate is arranged on one side, overlapped with the first hinge plate, of the second hinge plate, the clamping plate and the first hinge plate are mutually inserted and jointly provided with a positioning hole, and a bearing is arranged in the positioning hole.
Furthermore, the distance between one end of the corrugated compensator, which is close to the right-angle end of the horizontal section, and the corner point is 5-10 mm.
Further, the distance between the corrugated compensators is 3-6 m.
Compared with the prior art, the invention has the following beneficial effects:
the invention can be applied to right-angle corners of a GIL shaft, and the corrugated compensators are fixedly arranged on the horizontal section of a right-angle GIL circuit in pairs. When the vertical section of GIL takes place the deformation because of expend with heat and contract with cold, the deformation volume can be along vertical section transmission to the horizontal segment on, change the angle by the directional hinge atress of ripple compensator on the horizontal segment, make the level be in the GIL circuit between two ripple compensators and take place the slope, absorb the elongation or the shrinkage of the vertical section of GIL circuit, avoid the GIL circuit in the vertical well because of the extrusion that expend with heat produces or the shrink that the shrink produced impaired fracture. The deformation of GIL in the shaft in the axial direction is converted into the deformation in the radial direction through the flexible compensator, the use of the corrugated compensator in the shaft section is reduced as much as possible, the civil engineering construction difficulty of the pipe gallery is reduced, and the operation risk of the GIL is reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a single corrugated compensator unit according to the present invention;
FIG. 3 is an exploded view of the directional hinge of the present invention;
FIG. 4 is a schematic illustration of the installation location of the present invention in a shaft section;
FIG. 5 is a schematic diagram of the structure of the present invention in a balanced GIL line state;
FIG. 6 is a schematic structural view of the present invention in a GIL line thermal expansion state;
FIG. 7 is a schematic diagram of the cold shrink state of the GIL circuit according to the present invention.
Description of reference numerals:
1-directional hinge, 2-corrugated compensator, 3-GIL line, 4-connecting flange, 11-first hinge plate, 12-second hinge plate, 13-bearing, 14-fixing plate and 121-clamping plate.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 to 4, a flexible compensator for the axial deformation to radial deformation of GIL comprises a GIL line 3 and corrugated compensators 2, wherein two ends of the corrugated compensators 2 are fixedly arranged on a horizontal section of a right-angle GIL line 3 in pairs through connecting flanges 4, and one corrugated compensator 2 is arranged close to the right-angle end on the horizontal section; the connecting flange 4 is fixedly provided with directional hinges 1 which are horizontally clamped at two sides of the axis of the corrugated compensator 2; the directional hinge 1 comprises a first hinge plate 11 and a second hinge plate 12 which are oppositely arranged, the first hinge plate 11 and the second hinge plate 12 are L-shaped, opposite sides of the first hinge plate 11 and the second hinge plate 12 are overlapped and rotatably connected, and the other sides of the first hinge plate 11 and the second hinge plate 12 are fixedly connected with the connecting flange 4 through a fixing plate 14 clamped on the outer side.
The distance between one end of the corrugated compensator 2 close to the right-angle end of the horizontal section and the corner point is 5-10mm, the maximum thermal expansion displacement of the GIL vertical shaft and the non-proportional corner can generate axial displacement of more than 200mm, the corrugated compensator 2 is arranged close to the right-angle end of the horizontal section, deformation can be converted and absorbed when the GIL line 3 does not generate large deformation, and the operation risk of the GIL is reduced.
As shown in fig. 5, in a state where no deformation is generated in the GIL line 3 in the shaft in the equilibrium state, the ripple compensator 2 is kept at the original angle, and the GIL line 3 in the horizontal section is kept in the horizontal state.
As shown in fig. 6, the GIL line 3 in the shaft is in a thermally expanded state, and a state of generating an amount of elongation deformation is shown. Corrugated compensator 2 of one side is connected with vertical section to horizontal segment GIL circuit 3, receives the extension deformation influence of vertical section and atress downward sloping, and directional hinge 1 atress on the corrugated compensator 2 of opposite side rotates around bearing 13, and the downward sloping produces the contained angle, makes GIL circuit 3 between corrugated compensator 2 be the straight line form downward sloping, forms the hypotenuse of downward sloping and adapts to the increase of vertical section, avoids GIL circuit 3 to take place to distort extrusion circuit and piping lane inner wall because of the thermal expansion.
As shown in fig. 7, the GIL line 3 in the shaft is in a shrink state, and a state of a shrinkage deformation amount is generated. Corrugated compensator 2 of one side is connected with vertical section to horizontal segment GIL circuit 3, receive the shrink deformation influence of vertical section and atress tilt up, directional hinge 1 atress on the corrugated compensator 2 of opposite side rotates around bearing 13, and the tilt up produces the contained angle, GIL circuit 3 between messenger corrugated compensator 2 is the straight line form tilt up, the hypotenuse that forms the tilt up adapts to the shrinkage of vertical section, avoid GIL circuit 3 to stretch because of shrinkage, avoid the circuit to shorten and the piping lane inner wall of friction corner.
The distance between the corrugated compensators 2 is 3-6m, so that the two groups of directional hinges 1 between the corrugated compensators 2 keep larger distance, the inclination angle of the GIL line 3 between the corrugated compensators 2 generated when the deformation is adapted is reduced, and the GIL line 3 is prevented from generating angle distortion as far as possible.
A U-shaped clamp plate 121 is arranged on one side of the second hinge plate 12, which is overlapped with the first hinge plate 11, the clamp plate 121 and the first hinge plate 11 are inserted and combined together to form a positioning hole, a bearing 13 is arranged in the positioning hole, and the clamp plate 121 and the first hinge plate 11 are overlapped to enable the first hinge plate 11 and the second hinge plate 12 to be located on the same plane when being overlapped, so that the situation that any hinge plate is too high is avoided, and the space is saved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. A flexible compensator for axial to radial deformation of a GIL comprising a GIL line and a corrugated compensator, characterized by: two ends of each corrugated compensator are fixedly arranged on the horizontal section of the right-angle GIL line in pairs through connecting flanges, and one corrugated compensator is arranged close to the right-angle end on the horizontal section; the connecting flange is fixedly provided with directional hinges which are horizontally clamped at two sides of the axis of the corrugated compensator; the directional hinge comprises a first hinge plate and a second hinge plate which are arranged oppositely, the first hinge plate and the second hinge plate are L-shaped, one opposite sides of the first hinge plate and the second hinge plate are overlapped and rotatably connected, and the other sides of the first hinge plate and the second hinge plate are fixedly connected with the connecting flange through a fixing plate clamped on the outer side.
2. A flexible compensator for axial to radial deformation of a GIL as claimed in claim 1, wherein: and a U-shaped clamping plate is arranged on one side of the second hinge plate, which is overlapped with the first hinge plate, the clamping plate and the first hinge plate are inserted and jointly provided with a positioning hole, and a bearing is arranged in the positioning hole.
3. A flexible compensator for axial to radial deformation of a GIL as claimed in claim 1, wherein: the distance between one end of the corrugated compensator, which is close to the right-angle end of the horizontal section, and the corner point is 5-10 mm.
4. A flexible compensator for axial to radial deformation of a GIL as claimed in claim 3, wherein: the distance between the corrugated compensators is 3-6 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011212902.3A CN112212113A (en) | 2020-11-02 | 2020-11-02 | Flexible compensator for axial deformation to radial deformation of GIL |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011212902.3A CN112212113A (en) | 2020-11-02 | 2020-11-02 | Flexible compensator for axial deformation to radial deformation of GIL |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112212113A true CN112212113A (en) | 2021-01-12 |
Family
ID=74058101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011212902.3A Pending CN112212113A (en) | 2020-11-02 | 2020-11-02 | Flexible compensator for axial deformation to radial deformation of GIL |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112212113A (en) |
-
2020
- 2020-11-02 CN CN202011212902.3A patent/CN112212113A/en active Pending
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210826 Address after: 213300 No. 100, Tianmu Avenue, Tianmu Lake Industrial Park, Liyang Economic Development Zone, Changzhou City, Jiangsu Province Applicant after: JIANGSU ANKURA SMART TRANSMISSION ENGINEERING TECHNOLOGY Co.,Ltd. Address before: 300190 area 5-1-705b, saide Plaza, southwest of intersection of Hongqi Road and tiantuo North Road, Nankai District, tianjin-05 Applicant before: Tianjin Shangsheng Technology Co., Ltd |
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| TA01 | Transfer of patent application right |