CN101252263A - Method for electrified replacing 500 kV line L string insulator - Google Patents
Method for electrified replacing 500 kV line L string insulator Download PDFInfo
- Publication number
- CN101252263A CN101252263A CNA2008100582384A CN200810058238A CN101252263A CN 101252263 A CN101252263 A CN 101252263A CN A2008100582384 A CNA2008100582384 A CN A2008100582384A CN 200810058238 A CN200810058238 A CN 200810058238A CN 101252263 A CN101252263 A CN 101252263A
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- insulator
- insulator string
- monolithic
- tackle pulley
- lead side
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Abstract
Disclosed is a method for live line replacement of L insulator chains of 500 kV lines. Adopting the operational method of making use of a single-chip card(4), three pulley tackles(5) and a manual winch (6)to disentangle the side connection of the L insulator chains, the method overcomes the defects of large load, complex installation, high work intensity and long operation time in current insulator replacement methods. The method has the advantage that the method uses fewer tools, remarkably reduces work intensity and operation time, and greatly improves operation efficiency and operational safety.
Description
Technical field:
Adopt monolithic card, group three tackle pulley and the combination of artificial strand mill to free the operational method that " L " insulator string lead side connects, free the connection of insulator string lead side when being applicable to charged for replacement 500kV circuit " L " insulator string.
Technical background:
The novel tower of the little corner ZVJB of straight line is applied on the 500kV transmission line, has played important effect at aspects such as making things convenient for line design, reduction project cost.This tower has adopted a new technology: " L " insulator string assembly type, the insulator sheet number of its interior angle insulator string and exterior angle insulator string all is 26, but the angle of two insulator strings and vertical is inequality, and " L " insulator string and gold utensil assembly drawing are as shown in Figure 1.
Because the insulator long-time running in the field, is subjected to the influence of various factors, the deterioration of insulator, damage are unavoidably.In order to guarantee the power supply reliability of 500kV transmission line, must change the insulator of deterioration, damage.The 500kV transmission line is important passway for transmitting electricity, will produce greatly influence to operation of power networks and supply of electrical energy if the mode that adopt to have a power failure is changed insulator, even can not realize, selects the mode of live line working to change just to become inevitable.General yoke plate jig, screw mandrel and the insulation arm-tie of adopting makes up when changing, and by tightening up screw mandrel the insulator string xial feed shifted, and frees being connected of insulator string lead side and cross-arm side then.
" L " insulator string is after xial feed shifts, bear the load that produces owing to the insulator string deadweight, the operating personnel only can't free the connection of insulator string lead side with manpower, transfusion bottle hook-type bottle supporting frame can be used to shift the insulator string deadweight and the load of generation in the existing Work tool.But, labour intensity and activity duration have been increased because the segmentation combination wanted by transfusion bottle hook-type bottle supporting frame and weight is big, installation is complicated.
Summary of the invention:
Transfusion bottle hook-type bottle supporting frame is wanted the segmentation combination and problems such as weight is big, installation complexity in order to solve, Dali Power Supply Bureau, Yunnan Power Grid Corporation transmission of electricity administrative institute is connected and shifts stressing conditions behind the load through research insulator string and lead side, monolithic card, group three tackle pulley and the combination of artificial strand mill are adopted in creationary proposition, after stay cord by artificial strand mill draw groups three tackle pulley made the insulator between monolithic card and the yoke plate lax, the operating personnel freed the operational method that insulator string lead side connects.
Job step is as follows:
(1) adopts yoke plate jig, screw mandrel and insulated tension pole combination, shift by the xial feed of tightening up the insulator string that screw mandrel will need change extremely;
(2) two monolithic cards are installed in two insulator strings respectively by on the 3rd insulator of lead side;
(3) two ends with two group three tackle pulley are connected on two monolithic cards;
(4) pull rope that will organize three tackle pulley is put to ground and on artificial strand mill after passing the coaster that is anchored on the body of the tower respectively;
(5) tighten up the stay cord of group three tackle pulley by artificial strand mill, make the insulator between monolithic card and the yoke plate lax;
(6) operating personnel frees the connection of insulator string lead side.
The invention has the beneficial effects as follows:
Adopt monolithic card, group three tackle pulley and the combination of artificial strand mill to free the connection that operational method that " L " insulator string lead side is connected can realize " L " type insulator string lead side, this method can be changed used " L " insulator string of the little angle tower of 500kV transmission line straight line, can change straight line " V " insulator string again, and be applicable to the insulator string of different model and length.Adopt this operational method to reduce the use amount of instrument, significantly reduced operation intensity, shortened the activity duration, obviously improved operating efficiency and operational security, have stronger application value.
Further set forth content of the present invention below in conjunction with drawings and Examples.
Description of drawings:
Fig. 1 is an operation schematic diagram of the present invention.
Embodiment:
The inventive method job step is: as shown in Figure 1:
A, adopt yoke plate jig 1, screw mandrel 2 and insulated tension pole combination 3, shift by the xial feed of tightening up the insulator string that screw mandrel will need change extremely;
B, two monolithic cards 4 are installed in two insulator strings respectively by on the 3rd insulator of lead side;
C, with two the group three tackle pulley 5 two ends be connected on two monolithic cards;
D, the pull rope that will organize three tackle pulley 5 are put to ground and on artificial strand mill 6 after passing the coaster that is anchored on iron tower 8 bodies of the tower respectively;
E, tighten up the stay cord of group three tackle pulley 5, the insulator 7 between monolithic card 4 and the yoke plate jig 1 is relaxed by artificial strand mill 6;
F, operating personnel free the connection of insulator string lead side.
Claims (1)
1. the method for a charged for replacement 500kV circuit " L " insulator string is characterized in that, this method job step is:
A, adopt yoke plate jig (1), screw mandrel (2) and insulated tension pole combination (3), by tightening up the xial feed transfer of the insulator string that screw mandrel will need change extremely;
B, two monolithic cards (4) are installed in two insulator strings respectively by on the 3rd insulator of lead side;
C, with two the group three tackle pulley (5) two ends be connected on two monolithic cards;
D, the pull rope that will organize three tackle pulley (5) are put to ground and on artificial strand mill (6) after passing the coaster that is anchored on the body of the tower respectively;
E, tighten up the stay cord of group three tackle pulley (5), the insulator between monolithic card (4) and the yoke plate jig (1) is relaxed by artificial strand mill (6);
F, operating personnel free the connection of insulator string lead side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100582384A CN100566059C (en) | 2008-04-02 | 2008-04-02 | The method of a kind of charged for replacement 500kV circuit " L " insulator string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100582384A CN100566059C (en) | 2008-04-02 | 2008-04-02 | The method of a kind of charged for replacement 500kV circuit " L " insulator string |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101252263A true CN101252263A (en) | 2008-08-27 |
| CN100566059C CN100566059C (en) | 2009-12-02 |
Family
ID=39955499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2008100582384A Active CN100566059C (en) | 2008-04-02 | 2008-04-02 | The method of a kind of charged for replacement 500kV circuit " L " insulator string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100566059C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101546894B (en) * | 2009-04-29 | 2011-03-23 | 江苏省电力公司徐州供电公司 | Method for replacing 220KV steel pipe tower composite insulator electrifiedly |
| CN105743013A (en) * | 2016-03-28 | 2016-07-06 | 中国南方电网有限责任公司超高压输电公司南宁局 | Method for live replacement of +/-500kV DC line strain tower insulator string |
| CN112217143A (en) * | 2020-11-13 | 2021-01-12 | 云南电网有限责任公司带电作业分公司 | Operation method for replacing composite insulator in high-altitude area in 500kV line in live mode |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048286A (en) * | 1989-06-22 | 1991-01-02 | 西伯利亚科学研究院能源研究所 | On charged overhead transmission line, change the method and apparatus of defectiveness porcelain insulator in the suspension insulator string |
| CN2290937Y (en) * | 1997-01-14 | 1998-09-09 | 鞍山电业局试验所 | Live line work tool for replacing insulator |
| JP2007295679A (en) * | 2006-04-24 | 2007-11-08 | Chugoku Electric Power Co Inc:The | Temporary holding tool for high-voltage cable |
| CN2912028Y (en) * | 2006-06-16 | 2007-06-13 | 冯海潮 | Live replacing device for compact six-line insulator string |
-
2008
- 2008-04-02 CN CNB2008100582384A patent/CN100566059C/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101546894B (en) * | 2009-04-29 | 2011-03-23 | 江苏省电力公司徐州供电公司 | Method for replacing 220KV steel pipe tower composite insulator electrifiedly |
| CN105743013A (en) * | 2016-03-28 | 2016-07-06 | 中国南方电网有限责任公司超高压输电公司南宁局 | Method for live replacement of +/-500kV DC line strain tower insulator string |
| CN105743013B (en) * | 2016-03-28 | 2017-09-15 | 中国南方电网有限责任公司超高压输电公司南宁局 | The method of charged for replacement ± 500kV AC line anchor support insulator chains |
| CN112217143A (en) * | 2020-11-13 | 2021-01-12 | 云南电网有限责任公司带电作业分公司 | Operation method for replacing composite insulator in high-altitude area in 500kV line in live mode |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100566059C (en) | 2009-12-02 |
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