CN203276975U - +/- 800 kV extra high voltage DC circuit string-drop prevention composite insulator dual V-shaped suspension string - Google Patents
+/- 800 kV extra high voltage DC circuit string-drop prevention composite insulator dual V-shaped suspension string Download PDFInfo
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- CN203276975U CN203276975U CN 201320229526 CN201320229526U CN203276975U CN 203276975 U CN203276975 U CN 203276975U CN 201320229526 CN201320229526 CN 201320229526 CN 201320229526 U CN201320229526 U CN 201320229526U CN 203276975 U CN203276975 U CN 203276975U
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Abstract
A +/- 800 kV extra high voltage DC circuit string-drop prevention composite insulator dual V-shaped suspension string belongs to the technical field of power and comprises two suspension insulator strings, wherein each suspension insulator string comprises a triangular connection plate, the upper end of each triangular connection plate is connected with a liner type closed bowl head, the upper end of each liner type closed bowl head is connected with a EB suspension point fitting by a right-angle suspension plate, the lower end of each triangular connection plate is connected with a triangular connection plate, the lower ends of the triangular connection plates are connected with a same suspension connection plate, the suspension insulator strings are arranged in the V shape on the suspension connection plate, one equalizing ring is mounted on ball head rods of the suspension insulator strings respectively, and a suspension line clamp is connected with the suspension connection plate. The stress specificity of the suspension insulator strings in the V shape solves the problems that: if the stress is seriously not inconsistent at the bold wind condition, a locking pin deforms and ball and socket coupling is in failure and furthermore steel feet of the composite insulator strings drop from a bowl head suspension plate, and thus the stability of the suspension string at different conditions is reinforced.
Description
Technical field
The utility model relates to power technology field, the technical field of structures of particularly ± 800kV UHVDC Transmission Lines string falling prevention synthetic insulator duplex V-type suspension string.
Background technology
In recent years, along with the develop rapidly of China's power grid construction and the continuous lifting of technical merit, the V-type insulator string is widely applied on transmission line day by day.Particularly the advantage of V-type composite insulator string is very remarkable in ± 800kV extra-high voltage direct-current engineering, is conducive to reduce the accidents such as wire windage yaw, pollution flashover on the one hand, has improved the operation of power networks reliability; Be conducive to dwindle the circuit width of corridor on the one hand, economize the land resource.But because variation has occured V-type composite insulator string stress, under new service condition, also brought new problem, especially on compact line, repeatedly at strong wind, wave under condition, composite insulator string steel pin has occured deviate from the situation of string from socket-clevis eye.
The composite insulator of the above-mentioned type falls the string accident, the core brittle fracture accident that is different from early stage composite insulator, mainly because the insulator pressurized is seriously inconsistent, cause locking pin distortion ball-and-socket Joint failure to cause, have certain generality, also caused numerous builders and technical staff's concern.
Summary of the invention
The purpose of this utility model is in order to overcome the deficiencies in the prior art, and a kind of ± 800kV UHVDC Transmission Lines string falling prevention synthetic insulator duplex V-type serial type that dangles is provided.
the utility model comprises two suspension insulators, it is characterized in that: every suspension insulator comprises a triangle yoke plate, be connected with respectively lining type sealed socket in each triangle yoke plate upper end, upper end at each lining type sealed socket is connected with the EB hardware by the right angle link plate, the lower end of each triangle yoke plate is connected with respectively the right angle link plate, the lower end of each right angle link plate is connected on same hanging yoke plate, the V-shaped arrangement on hanging yoke plate of described two suspension insulators, on the bulb rod of described each suspension insulator, grading ring is installed respectively, be connected with suspension clamp on described hanging yoke plate.
Due to the stressed particularity of V-type suspension insulator, if pressurized is seriously inconsistent under the strong wind operating mode, can cause locking pin distortion ball-and-socket Joint failure, composite insulator string steel pin deviates from the string accident from socket-clevis eye.For guaranteeing the safe and reliable of design, gold utensil is connected on overall structure and can forms soft chain except considering, has especially guaranteed the closure of gold utensil insulator string in ball, bowl hinged place.Above-mentioned suspension insulator is composite insulator string, reliable for guaranteeing line security, when the gold utensil type selecting, stress in particular ball, nest gold utensil on the fair line road, all have a flexibility of rotation perpendicular to line direction, therefore after above-mentioned suspension insulator upper end adopts lining type sealed socket to connect the right angle link plate, be connected on hardware, the lower end also adopts lining type sealed socket to connect the triangle yoke plate, then is connected with right angle link plate, hanging yoke plate.Compare traditional V-type insulator string and connect, have higher flexibility, and adopt closed ball, nest connected mode at suspension insulator two ends, improved the reliability of ball, nest hinged place, strengthened the stability under various operating modes.
Technique scheme can also be done following improvement: hanging yoke plate can install heavy punch piece additional as required.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 be Fig. 1 at A-A to partial schematic diagram.
In figure: the 1-suspension insulator; The 2-lining type sealed socket; 3-right angle link plate; The 4-hardware; 5-triangle yoke plate; The 6-grading ring; The 7-hanging yoke plate; The 8-suspension clamp; The 9-heavy punch piece.
Embodiment
As shown in Figure 1, 2, the utility model comprises two suspension insulators 1, every suspension insulator 1 comprises a triangle yoke plate 5, be connected with respectively lining type sealed socket 2 in each triangle yoke plate 5 upper ends, be connected with EB hardware 4 by right angle link plate 3 in the upper end of each lining type sealed socket 2.The lower end of each triangle yoke plate 5 is connected with respectively right angle link plate 3, and the lower end of each right angle link plate 3 is connected on same hanging yoke plate 7.The V-shaped arrangement on hanging yoke plate 7 of above-mentioned two suspension insulators 1.
On the bulb rod of each suspension insulator 1, grading ring 6 is installed respectively, symmetrical expression is connected with suspension clamp 8 and heavy punch piece 9 on hanging yoke plate 7.
Claims (2)
1. ± 800kV UHVDC Transmission Lines string falling prevention synthetic insulator duplex V-type suspension string, comprise two suspension insulators, it is characterized in that: every suspension insulator comprises a triangle yoke plate, be connected with respectively lining type sealed socket in each triangle yoke plate upper end, upper end at each lining type sealed socket is connected with the EB hardware by the right angle link plate, the lower end of each triangle yoke plate is connected with respectively the right angle link plate, the lower end of each right angle link plate is connected on same hanging yoke plate, the V-shaped arrangement on hanging yoke plate of described two suspension insulators, on the bulb rod of described each suspension insulator, grading ring is installed respectively, be connected with suspension clamp on described hanging yoke plate.
2. according to claim 1 ± 800kV UHVDC Transmission Lines string falling prevention synthetic insulator duplex V-type suspension string is characterized in that: be connected with heavy punch piece on described hanging yoke plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320229526 CN203276975U (en) | 2013-05-02 | 2013-05-02 | +/- 800 kV extra high voltage DC circuit string-drop prevention composite insulator dual V-shaped suspension string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320229526 CN203276975U (en) | 2013-05-02 | 2013-05-02 | +/- 800 kV extra high voltage DC circuit string-drop prevention composite insulator dual V-shaped suspension string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203276975U true CN203276975U (en) | 2013-11-06 |
Family
ID=49507335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320229526 Expired - Lifetime CN203276975U (en) | 2013-05-02 | 2013-05-02 | +/- 800 kV extra high voltage DC circuit string-drop prevention composite insulator dual V-shaped suspension string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203276975U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110912058A (en) * | 2019-12-06 | 2020-03-24 | 中国电力工程顾问集团西南电力设计院有限公司 | Wind deflection prevention semi-V-shaped suspension string |
-
2013
- 2013-05-02 CN CN 201320229526 patent/CN203276975U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110912058A (en) * | 2019-12-06 | 2020-03-24 | 中国电力工程顾问集团西南电力设计院有限公司 | Wind deflection prevention semi-V-shaped suspension string |
| CN110912058B (en) * | 2019-12-06 | 2024-04-26 | 中国电力工程顾问集团西南电力设计院有限公司 | Semi-V-shaped suspension string for preventing windage yaw |
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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 |
Granted publication date: 20131106 |
|
| CX01 | Expiry of patent term |