CN202711877U - Twin V-shaped porcelain insulator string with single hanging point and two wire clamps for +/-500 kV double-circuit lines on same tower - Google Patents
Twin V-shaped porcelain insulator string with single hanging point and two wire clamps for +/-500 kV double-circuit lines on same tower Download PDFInfo
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- CN202711877U CN202711877U CN 201220376788 CN201220376788U CN202711877U CN 202711877 U CN202711877 U CN 202711877U CN 201220376788 CN201220376788 CN 201220376788 CN 201220376788 U CN201220376788 U CN 201220376788U CN 202711877 U CN202711877 U CN 202711877U
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Abstract
The utility model provides a twin V-shaped porcelain insulator string with a single hanging point and two wire clamps for +/-500 kV double-circuit lines on a same tower, and relates to an insulator suspension string. Through the spatial combination and connection of a quadrifid link plate and the insulator strings, the requirement that a conducting wire is separate into eight parts is realized, and the occurrence that the insulator string is easy to clamp during one link unloading after the deviation along the lines and off-ice jumping is avoided. The twin V-shaped porcelain insulator string with the single hanging point and the two wire clamps for the +/-500 kV double-circuit lines on the same tower comprises two groups of V-shaped suspension insulator strings. One end of each insulator string of each group of suspension insulator string is connected with a same link plate sequentially through a ball head hanging loop and a right angle hanging plate. The link plate is sequentially connected with right angle hanging plates, a DB type adjusting plate, U-shaped hanging loops and an EB hanging point hardware fitting. The other end of each insulator string of each group of suspension insulator string is connected with a same LF link plate through a bowl head hanging plate. Each LF link plate is respectively connected with two parallel quadrifid suspension link plates through two right angle hanging plates. The twin V-shaped porcelain insulator string with the single hanging point and the two wire clamps for the +/-500 kV double-circuit lines on the same tower uses the connection mode with the single hanging point, and satisfies the strength and stability requirements for the conducting wire separate into eight parts.
Description
Technical field
The utility model relates to a kind of for the insulator suspension string on the large capacity transmission circuit.
Background technology
Electric armour clamp will stand to ice on the transmission line of long-time running, the baptism of snow, storm, strong wind, sleet, icing easily cause the faults such as wire ice-shedding, phase fault, wire collision lightning conducter, so electric armour clamp must possess higher mechanical strength and enough coefficient of safetys.Suspension string is the important gold utensil in the transmission line, bear the weight of vertical direction wire, wind-force on icing weight and the horizontal direction, the suspension string of existing ± 500kV transmission line adopts double hanging point in inhomogeneous icing situation, the situation that can occur a unloading after the skew of V string fair line, be unfavorable for safe operation, and when ice-shedding, insulator blocks easily, and existing suspension string mainly is applicable to conductors on quad bundled, the division negligible amounts, yet eight bundle conductors of existing being used for ± 500kV transmission line, eight suspension clamps are distributed on the eight division yoke plates that eight division yoke plates or same plane be combined into, increase along with wire radical and wire diameter, the wire deadweight, the wind-force of icing and horizontal direction all increases greatly, adopt eight division yoke plates of plane formula to guarantee that sub-conductor division quantity and spacing can not satisfy ± intensity and the stability requirement of 500kV transmission line, so the global reliability of suspension string is not high, need to be optimized its structure.
Summary of the invention
The utility model provides, and a kind of ± 500kV common-tower double-return circuit presss from both sides duplex V-type porcelain insulating substring with single hanging point two-wire, be connected to realize the requirement of eight bundle conductors by the quadripartion yoke plate with the Spatial Coupling of insulator string, and the situation that insulator blocks easily when avoiding a unloading and ice-shedding can occurring after the fair line skew occurs.
For achieving the above object, the utility model is taked following technical scheme:
± 500kV common-tower double-return circuit presss from both sides duplex V-type porcelain insulating substring with single hanging point two-wire, comprise two groups of V-shaped suspension insulators, every group of suspension insulator is comprised of the insulator string of two parallel connections, one end of every insulator string of every group of suspension insulator is connected with same yoke plate by ball-eye, right angle link plate successively, and yoke plate connects the right angle link plate successively, the DB type is adjusted plate, U-shaped link and EB hardware; The other end of every insulator string of every group of suspension insulator is connected with same LF yoke plate by socket-clevis eye, each LF yoke plate by two right angle link plates respectively the quadripartion hanging yoke plate parallel with two connect, on each LF yoke plate grading ring is installed, on each quadripartion hanging yoke plate suspension clamp is installed.
Every insulator string of every group of suspension insulator all is comprised of suspension insulator, and the DB type is adjusted the length of every group of suspension insulator of plate capable of regulating.Suspension string adopts the EB hardware to form single hanging point and shaft tower links, the lower end of every group of suspension insulator links by socket-clevis eye, LF yoke plate, right angle link plate and quadripartion hanging yoke plate, being equivalent to duplex closes as a whole, so that effectively avoid under the inhomogeneous icing operating mode of heavy icing area a unloading can occurring after the fair line skew, and can prevent that when ice-shedding insulator from blocking, and guaranteed the transmission line safe operation.Two insulator strings of every group of suspension insulator connection in series-parallel merge by the LF yoke plate, be connected respectively on two quadripartion hanging yoke plates with being divided into two again, four suspension clamps that are used for conductors on quad bundled that each quadripartion hanging yoke plate connects combine for connecting eight bundle conductors, make the whole stress balance of suspension string, stability strengthens greatly.
Technique scheme can also be done following improvement: the quadripartion hanging yoke plate can install heavy punch piece additional as required, also is provided with the preformed lines that protect in the wire folder hole of suspension clamp.
The utility model adopts the connection pattern of single hanging point, makes transmission line safe and reliable to operation, can also satisfy simultaneously ± intensity and the stability requirement of eight bundle conductors of 500kV transmission line, and operation is all safe and reliable under various operating modes.
Description of drawings
Fig. 1 is the structural representation of embodiment;
Fig. 2 is that the A of Fig. 1 is to structural representation.
Description of reference numerals: 1-suspension insulator; The 2-insulator string; The 3-suspension insulator; The 4-ball-eye; 5-right angle link plate; The 6-yoke plate; The 7-DB type is adjusted plate; 8-U shape link; The 9-EB hardware; The 10-socket-clevis eye; The 11-LF yoke plate; 12-quadripartion hanging yoke plate; The 13-grading ring; The 14-suspension clamp; The 15-heavy punch piece; The preformed lines that protect of 16-.
Embodiment
Below in conjunction with drawings and Examples the utility model content is described further.
Present embodiment is ± mountain region, the 20mm ice formation JL/G1A-900/75 wire of 500KV common-tower double-return DC transmission engineering is with 4X420kN duplex V-type suspension insulator.When height above sea level is 1000m, every insulator string of every group of suspension insulator comprises suspension insulator sheet several 40, when height above sea level is 1500m, every insulator string of every group of suspension insulator comprises suspension insulator sheet several 42, when height above sea level is 2000m, every insulator string of every group of suspension insulator comprises suspension insulator sheet several 43.As shown in Figure 1, 2, present embodiment comprises two groups of V-shaped suspension insulators 1, every group of suspension insulator 1 is comprised of the insulator string 2 of two parallel connections, every insulator string 2 of every group of suspension insulator 1 all is comprised of suspension insulator 3, one end of every insulator string 2 of every group of suspension insulator 1 is connected with same yoke plate 6 by ball-eye 4, right angle link plate 5 successively, and yoke plate 6 connects right angle link plate 5 successively, the DB type is adjusted plate 7, U-shaped link 8 and EB hardware 9; The other end of every insulator string 2 of every group of suspension insulator 1 is connected with same LF yoke plate 11 by socket-clevis eye 10, each LF yoke plate 11 by two right angle link plates 5 respectively the quadripartion hanging yoke plate 12 parallel with two connect, grading ring 13 is installed on each LF yoke plate 11, suspension clamp 14 and heavy punch piece 15 are installed on each quadripartion hanging yoke plate 12, in the wire folder hole of suspension clamp, also are provided with the preformed lines 16 that protect.
Claims (3)
1. ± 500kV common-tower double-return circuit is with single hanging point two-wire folder duplex V-type porcelain insulating substring, comprise two groups of V-shaped suspension insulators, every group of suspension insulator is comprised of the insulator string of two parallel connections, it is characterized in that: an end of every insulator string of every group of suspension insulator is connected with same yoke plate by ball-eye, right angle link plate successively, and yoke plate connects the right angle link plate successively, the DB type is adjusted plate, U-shaped link and EB hardware; The other end of every insulator string of every group of suspension insulator is connected with same LF yoke plate by socket-clevis eye, each LF yoke plate by two right angle link plates respectively the quadripartion hanging yoke plate parallel with two connect, on each LF yoke plate grading ring is installed, on each quadripartion hanging yoke plate suspension clamp is installed.
2. as claimed in claim 1 ± 500kV common-tower double-return circuit is characterized in that: on the described quadripartion hanging yoke plate heavy punch piece is installed with single hanging point two-wire folder duplex V-type porcelain insulating substring.
3. as claimed in claim 1 ± 500kV common-tower double-return circuit is characterized in that: be provided with the preformed lines that protect in the wire folder hole of described suspension clamp with single hanging point two-wire folder duplex V-type porcelain insulating substring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220376788 CN202711877U (en) | 2012-07-31 | 2012-07-31 | Twin V-shaped porcelain insulator string with single hanging point and two wire clamps for +/-500 kV double-circuit lines on same tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220376788 CN202711877U (en) | 2012-07-31 | 2012-07-31 | Twin V-shaped porcelain insulator string with single hanging point and two wire clamps for +/-500 kV double-circuit lines on same tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202711877U true CN202711877U (en) | 2013-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220376788 Withdrawn - After Issue CN202711877U (en) | 2012-07-31 | 2012-07-31 | Twin V-shaped porcelain insulator string with single hanging point and two wire clamps for +/-500 kV double-circuit lines on same tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202711877U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102810364A (en) * | 2012-07-31 | 2012-12-05 | 中国南方电网有限责任公司超高压输电公司 | Single-suspension-point double-wire-clamp duplex V-shaped porcelain insulator string for +/-500kV common-tower double-circuit lines |
-
2012
- 2012-07-31 CN CN 201220376788 patent/CN202711877U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102810364A (en) * | 2012-07-31 | 2012-12-05 | 中国南方电网有限责任公司超高压输电公司 | Single-suspension-point double-wire-clamp duplex V-shaped porcelain insulator string for +/-500kV common-tower double-circuit lines |
| CN102810364B (en) * | 2012-07-31 | 2016-08-17 | 中国南方电网有限责任公司超高压输电公司 | ± 500kV multiple-circuit on same tower presss from both sides duplex V-type porcelain insulating substring with single hanging point two-wire |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20130731 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130130 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |