CN220753160U - High-altitude porcelain sleeve for GIS - Google Patents
High-altitude porcelain sleeve for GIS Download PDFInfo
- Publication number
- CN220753160U CN220753160U CN202322457055.2U CN202322457055U CN220753160U CN 220753160 U CN220753160 U CN 220753160U CN 202322457055 U CN202322457055 U CN 202322457055U CN 220753160 U CN220753160 U CN 220753160U
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- conducting rod
- altitude
- porcelain insulator
- hollow
- shielding device
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- 229910052573 porcelain Inorganic materials 0.000 title claims abstract description 60
- 239000012212 insulator Substances 0.000 claims abstract description 40
- 230000007704 transition Effects 0.000 claims abstract description 19
- 238000009422 external insulation Methods 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000004880 explosion Methods 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 description 4
- 208000028659 discharge Diseases 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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- Insulators (AREA)
Abstract
The utility model relates to the technical field of high-altitude ultrahigh-voltage switch equipment, and discloses a high-altitude porcelain bushing for a GIS, which comprises a hollow porcelain insulator, a grading ring, a wiring seat, a double shielding device, a conducting rod, a transition flange and a supporting bus, wherein the outer circumference of the conducting rod is sequentially provided with the double shielding device and the hollow porcelain insulator, the upper end of the hollow porcelain insulator is connected with the wiring seat, the lower end of the hollow porcelain insulator is connected with the supporting bus through the transition flange, the double shielding device is fixed on the transition flange, the upper end of the conducting rod is fixed on the lower flange surface of the wiring seat, the lower end of the conducting rod is assembled with the supporting bus, and the two ends of the wiring seat are respectively provided with the grading ring. The utility model has good explosion resistance, insulativity, mechanical property and universality, is safer and more reliable to use, has stable performance, simplifies the production process and can reduce the production cost.
Description
Technical Field
The utility model relates to the technical field of high-altitude ultrahigh-voltage switch equipment, in particular to a high-altitude porcelain bushing for a GIS, which is mainly suitable for electric connection of 550kV gas-insulated metal-enclosed switch equipment (GIS) with a bus, an overhead line and a transformer in a high-altitude area.
Background
With the great development of western hydropower resources, coal resources, northwest wind power, photovoltaic and other energy sources in China, the ultra-high-voltage high-altitude power transmission project is gradually increased, and the sleeve is used as an important component of a gas insulated metal enclosed switchgear (GIS) so as to greatly increase the demand. The sleeve used at present has the defects of poor explosion resistance and poor insulation; the horizontal insulator is connected below the sleeve, so that internal discharge is easy to occur. For the elevation of the high altitude GIS project, the requirements of external insulation and dry arc distance of the sleeve are also increased.
The prior patent with publication number CN 202159951U discloses a 110kV high-altitude porcelain bushing type cable terminal, but the high-altitude porcelain bushing for GIS, which is not suitable for an ultra-high voltage power system with 550kV voltage level in a high-altitude area and meets the latest reiteration requirement of the national network, is not yet seen.
Disclosure of Invention
In order to solve the problems in the background technology, the utility model is realized by the following technical scheme:
a high altitude porcelain bushing for GIS comprises a hollow porcelain insulator, a grading ring, a wiring seat, a double shielding device, a conducting rod, a transition flange and a supporting bus; the outer circumference of the conducting rod is sequentially provided with a double-shielding device and a hollow porcelain insulator, and the conducting rod and the double-shielding device are positioned in the hollow porcelain insulator cavity; the upper end of the hollow porcelain insulator is connected with the wiring seat, and the lower end of the hollow porcelain insulator is connected with the support bus through the transition flange; the double shielding device is fixed on the transition flange; the upper end of the conducting rod is fixed on the lower flange surface of the wiring seat, and the lower end of the conducting rod is assembled with the supporting bus; and two ends of the wire holder are respectively provided with an equalizing ring.
The conducting rod, the double shielding device and the hollow porcelain insulator are coaxial.
And the butt joint surface of the hollow porcelain insulator and the transition flange is sealed in a double way.
Each grading ring comprises two identical shielding rings, the two shielding rings are welded on the connecting plate, and then the two shielding rings are fixed on the wire holder in a bolt fastening mode through the bent plate.
The double-shielding device consists of a middle shielding cover, a grounding shielding cover and a supporting insulator and is coaxial with the transition flange.
The support busbar comprises a support tank, a contact seat assembly and a guide piece, wherein the contact seat assembly is integrally L-shaped, the outer periphery of the conductive rod is externally buckled, and the guide piece extends into the conductive rod.
The conducting rod is directly connected with the next section of bus through the contact seat assembly in the supporting bus.
The length of the hollow porcelain insulator is 6500 mm-6900 mm.
The rated current of the conducting rod is 5000A, and the actual current capacity is 6300A.
The high-altitude porcelain bushing for the GIS has the rated voltage of 550kV, and the external insulation of the hollow porcelain insulator is corrected according to the altitude of 3000 mm.
The utility model provides a high altitude porcelain bushing for GIS, which has the advantages that compared with the prior art, the utility model has the following advantages:
1. the length of the hollow porcelain insulator reaches 6500mm, is suitable for an ultra-high voltage power system with a voltage level of 550kV, and meets the latest reiteration requirement of national networks; the lower flange of the porcelain bushing adopts double sealing and a better sealing structure; by improving the conducting rod and the contact seat, the use of a horizontal basin is canceled in the sleeve assembly, the risk of discharge is reduced, the use environment is more severe, the high-altitude and high-vibration-resistant level is met, and AG5 is reached; the support bus ensures that the sleeve has better explosion resistance and mechanical bearing capacity.
2. The utility model has better explosion-proof performance, insulating performance and mechanical property, reduces the risk of discharge, is safer and more reliable to use, has stable performance, improves the sealing performance of the product, improves the distribution of the electric field outside the sleeve, and enhances the external insulating capability of the high-altitude sleeve.
3. The utility model has better universality of parts, simplified production process and reduced production cost.
Drawings
Fig. 1 is a schematic structural diagram of a high altitude porcelain bushing for a GIS.
Fig. 2 is a schematic structural view of a hollow porcelain insulator.
Fig. 3 is a schematic structural view of the double shielding device.
Fig. 4 is a schematic view of the structure of the support bus bar.
In the figure: 1. hollow porcelain insulator 2, equalizing ring, 3, wire holder, 4, double shield, 5, conducting rod, 6, transition flange, 7, support busbar, 8, middle shield cover, 9, ground shield cover, 10, support insulator, 11, supporting tank, 12, contact holder assembly, 13, guide piece.
Detailed Description
The utility model relates to a high-altitude porcelain bushing for a GIS, and a specific embodiment of the utility model is described below with reference to the accompanying drawings.
A high-altitude porcelain bushing for GIS comprises a hollow porcelain insulator 1, a grading ring 2, a wire holder 3, a double shielding device 4, a conducting rod 5, a transition flange 6 and a supporting bus 7.
The outer circumference of the conducting rod 5 is sequentially provided with a double-shielding device 4 and a hollow porcelain insulator 1, and the conducting rod 5 and the double-shielding device 4 are positioned in the cavity of the hollow porcelain insulator 1; the conducting rod 5, the double shielding device 4 and the hollow porcelain insulator 1 are coaxial, so that the internal electric field of the high-altitude porcelain bushing is more uniform, the distribution of the external electric field of the porcelain bushing is improved, and the external insulating capability of the bushing is improved.
The upper end of the hollow porcelain insulator 1 is connected with the wiring seat 3, the lower end of the hollow porcelain insulator 1 is connected with the supporting bus 7 through the transition flange 6, and the butt joint surface of the hollow porcelain insulator 1 and the transition flange 6 adopts double sealing; the length of the hollow porcelain insulator 1 is 6500mm.
Two ends of the wire holder 3 are respectively provided with an equalizing ring 2, each equalizing ring 2 comprises two identical shielding rings, after the relative positions of the equalizing rings 2 and the wire holder 3 are determined, the two shielding rings are welded on a connecting plate, and then the two shielding rings are fixed on the wire holder 3 in a bolt fastening mode through a bent plate.
The double shielding device 4 consists of an intermediate shielding cover 8, a grounding shielding cover 9 and a supporting insulator 10, and the double shielding device 4 is fixed on the transition flange 6 and is coaxial with the transition flange 6.
The upper end of the conducting rod 5 is fixed on the lower flange surface of the wire holder 3, the lower end of the conducting rod 5 is assembled with the supporting bus 7, and the conducting rod 5 is redesigned, increased in length and better in through-flow capacity.
The supporting bus 7 consists of a supporting tank 11, a contact seat assembly 12 and a guide piece 13, wherein the supporting tank 11 is made of cast aluminum alloy, and the lower part of the supporting tank is fixed with a bracket, so that the wind resistance, the shock resistance and the mechanical bearing capacity of the high-altitude sleeve are ensured. The contact seat assembly 12 is integrally L-shaped, is externally buckled on the outer circumferential surface of the conducting rod 5, and the guide piece 13 penetrates into the conducting rod 5; through conducting rod 5, through extension, adjustment contact seat assembly 12's connected mode and redesign supporting tank 11 butt joint face etc. realized that supporting bus 7 can directly link with next section generating line, reduced the use of horizontal basin insulator in the engineering, practice thrift the cost, very big reduction the risk that the sleeve pipe whole assembly discharged.
The high-altitude porcelain bushing for the GIS is used in a high-altitude area, rated voltage is 550kV, the external insulation of the hollow porcelain insulator 1 is corrected according to the altitude of 3000mm, rated current of the conducting rod 5 is 5000A, actual current capacity is 6300A, and safety margin is relatively large.
Of course, the utility model is not limited thereto, and any modification and equivalent replacement that meets the technical scope of the utility model, on the premise of satisfying the insulation performance and the current passing capability, is within the scope of the claims of the utility model.
Claims (10)
1. The high-altitude porcelain bushing for the GIS comprises a hollow porcelain insulator (1), a grading ring (2), a wiring seat (3), a double-shielding device (4), a conducting rod (5), a transition flange (6) and a supporting bus (7), and is characterized in that the double-shielding device (4) and the hollow porcelain insulator (1) are sequentially arranged on the outer circumference of the conducting rod (5), and the conducting rod (5) and the double-shielding device (4) are positioned in a cavity of the hollow porcelain insulator (1); the upper end of the hollow porcelain insulator (1) is connected with a wiring seat (3), and the lower end of the hollow porcelain insulator (1) is connected with a supporting bus (7) through a transition flange (6); the double shielding device (4) is fixed on the transition flange (6); the upper end of the conducting rod (5) is fixed on the lower flange surface of the wire holder (3), and the lower end of the conducting rod (5) is assembled with the supporting bus (7); two ends of the wire holder (3) are respectively provided with an equalizing ring (2).
2. A high altitude porcelain bushing for GIS according to claim 1, characterized in that the conductive rod (5), the double shielding device (4) and the hollow porcelain insulator (1) are coaxial.
3. The high-altitude porcelain bushing for GIS according to claim 1, wherein the butt joint surface of the hollow porcelain insulator (1) and the transition flange (6) is sealed by two ways.
4. A high altitude porcelain bushing for GIS according to claim 1, characterized in that each grading ring (2) comprises two identical shielding rings, which are welded to the connection plate and then fastened to the connection holder (3) by means of bolts through bent plates.
5. The high-altitude porcelain bushing for GIS according to claim 1, characterized in that the double shielding device (4) consists of an intermediate shielding case (8), a grounding shielding case (9) and a supporting insulator (10) and is coaxial with the transition flange (6).
6. The high-altitude porcelain bushing for the GIS according to claim 1, wherein the supporting bus bar (7) consists of a supporting tank (11), a contact seat assembly (12) and a guide piece (13), the contact seat assembly (12) is integrally L-shaped, is externally buckled on the outer circumferential surface of the conducting rod (5), and the guide piece (13) is penetrated into the conducting rod (5).
7. A high altitude porcelain bushing for GIS according to claim 6, characterized in that the conductive rod (5) is directly connected to the next bus bar section by means of a contact socket assembly (12) in the support bus bar (7).
8. A high altitude porcelain bushing for GIS according to claim 1, wherein the hollow porcelain insulator (1) has a length of 6500mm.
9. A high altitude porcelain bushing for GIS according to claim 1, wherein the rated current of the conductive rod (5) is 5000A and the actual current capacity is 6300A.
10. A high altitude porcelain bushing for GIS according to claim 1, characterized in that rated voltage is 550kV, and the external insulation of the hollow porcelain insulator (1) is corrected by altitude 3000 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322457055.2U CN220753160U (en) | 2023-09-11 | 2023-09-11 | High-altitude porcelain sleeve for GIS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322457055.2U CN220753160U (en) | 2023-09-11 | 2023-09-11 | High-altitude porcelain sleeve for GIS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220753160U true CN220753160U (en) | 2024-04-09 |
Family
ID=90563091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322457055.2U Active CN220753160U (en) | 2023-09-11 | 2023-09-11 | High-altitude porcelain sleeve for GIS |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220753160U (en) |
-
2023
- 2023-09-11 CN CN202322457055.2U patent/CN220753160U/en active Active
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