CN201750110U - Connecting device of overhead power transmission line composite insulator and hardware string - Google Patents
Connecting device of overhead power transmission line composite insulator and hardware string Download PDFInfo
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- CN201750110U CN201750110U CN201020131366XU CN201020131366U CN201750110U CN 201750110 U CN201750110 U CN 201750110U CN 201020131366X U CN201020131366X U CN 201020131366XU CN 201020131366 U CN201020131366 U CN 201020131366U CN 201750110 U CN201750110 U CN 201750110U
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- composite insulator
- inner arc
- transmission line
- bolt
- loop
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- 239000012212 insulator Substances 0.000 title claims abstract description 75
- 239000002131 composite material Substances 0.000 title claims abstract description 64
- 230000005540 biological transmission Effects 0.000 title claims abstract description 22
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 24
- 239000010931 gold Substances 0.000 claims description 24
- 229910052737 gold Inorganic materials 0.000 claims description 24
- 238000012360 testing method Methods 0.000 description 8
- 229910052573 porcelain Inorganic materials 0.000 description 7
- 239000011521 glass Substances 0.000 description 6
- 239000012211 strain insulator Substances 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000009658 destructive testing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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Abstract
The utility model discloses a connecting device of an overhead power transmission line composite insulator and a hardware string, wherein screw holes are respectively arranged at two ends of the composite insulator (1); and two screw holes or one of the two screw holes is connected through a bolt with an inner arc U-shaped ring (2) connected with a grounded end (3) or a high-voltage end (6). By changing the connecting mode of hardware, the hardware string can axially twist at a small angle, thereby preventing the composite insulator from axially twisting to avoid the damage to the connection strength of a core rod and the hardware at the end part. The utility model ensures the mechanical property of the composite insulator and ensures that power transmission line safely and reliably operates.
Description
(1), technical field the utility model relates to the hookup between a kind of overhead transmission line composite insulator and the line hardware string.
(2), background technology is present, the all string that dangles, strain insulator-string and V-arrangement string (being referred to as the gold utensil string) mainly is made up of composite insulator (or porcelain insulator, glass insulator) and line hardware in the overhead transmission line, the syndeton of porcelain insulator, glass insulator is: an end is a bulb, one end is a ball-and-socket, is convenient to interconnect; Composite insulator is to substitute porcelain insulator, glass insulator for anti-pollution flashover the earliest, and therefore, its syndeton and porcelain insulator, glass insulator are identical, are convenient to be connected with the two ends gold utensil.
In the past, the bind mode between porcelain insulator, glass insulator and line hardware and the line hardware did not allow gold utensil generation axial torsion, can not destroy the mechanical strength of porcelain insulator, glass insulator; But low-angle may take place and reverse under various unfavorable operating modes in the composite insulator of being made up of flexible material, thereby destroys the strength of connection of plug and end gold utensil.At winter rain and snow mixed, ice rain weather, during conductor galloping, the string that dangles of will upwards exerting pressure repeatedly, or the strain insulator-string of vertically exerting pressure, R shape pin or be crushed out of shape further causes the disengaging of bulb and ball-and-socket and falls string.Therefore, the connection measure of conventional type gold utensil string and imperfect.Wuhan high pressure research institute once did destructive testing in 2006, found that strain insulator composite insulator bulb has phenomenon of rupture.
Tsing-Hua University carried out composite insulator ± 10 ° in 2002 and has drawn twisting to carry an experimental study, thought that the inner inlaying type composite insulator can satisfy service requirement under various dynamic loads.(#1～#15 is a compression joint type to one group of 500kV strain insulator composite insulator that Shandong Research Inst. of Electric Power carried out in 2005, #16～#27 is an inner inlaying type) ± 10 ° draw and turn round the pull and torsion test data and show: the test product that the end is connected to compression joint type through draw turn round composite test after mechanical damage in various degree reduction (on average reducing by 5%) is all arranged, and the inner inlaying type test product through draw turn round composite test after mechanical failure load raise on the contrary (on average improving 6%).This is because the mechanical load of compression joint type test product is a process that descends gradually, and the inner inlaying type test product is carved the pulling force that bears the piece both sides after turning round composite test and redistributed through drawing, and mechanical failure load wants high than initial value.Because the inner inlaying type manufacture craft is not really ripe, so far, selects the compression joint type composite insulator mostly for use.
Inventor Wang Mao of the present utility model is formed in the paper of delivering in 2004 " the two strings of 220kV strain insulator reverse or the research of deflection mechanism and prevention thereof ", includes the 8th young academic meeting paper collection in CSEE; Wang Mao becomes delivered paper " based on the research of 220kV strain insulator compound inslation substring optimal design " at " China Power " magazine in April, 2005, two pieces of articles think that the assembling of strain insulator porcelain vase gold utensil string not exclusively is fit to composite insulator, and propose to adopt the solution of inner arc U-loop.The senior engineer Xu Li of Fujian Quanzhou Electric Power Office delivers paper " the composite insulator end connects gold utensil and rationally cooperates shallow view " virtuous in August, 2007, thinks that the requirement of composite insulator two ends connection gold utensil should be not identical with disk insulator.But the connecting mode of the end gold utensil of above three pieces of all not mentioned composite insulators of article itself should change.
Siping line materials factory Wu state flood publishes thesis at " power construction " magazine " precautionary measures that V-type compound inslation substring falls string " in November, 2008, only proposes composite insulator end gold utensil and can change the flute profile syndeton into by ball head structure.
In recent years, the composite insulator of phase V-arrangement string changed the ring type connection into by bulb, ball-and-socket connection in the extra high voltage line.In October, 2009, China Electric Power Research Institute and Tsing-Hua University unite publish thesis " extra-high voltage alternating current-direct current circuit composite insulator and reliability thereof " at " high voltage technique " magazine, proposed following viewpoint: shaft tower cross-arm and hanging conductor clamp are realized encircling joining with the gold utensil end loops of common U type link and insulator both sides respectively, avoid locking pin (the R shape pin) crimp between bulb, ball-and-socket.Because the internal diameter of the interior ring of composite insulator is very little, causes this ring--the ring connected mode almost can not make gold utensil string axial torsion, and end gold utensil manufacture craft is comparatively complicated.
(3), utility model content technical problem to be solved in the utility model is, the hookup of a kind of overhead transmission line composite insulator and gold utensil string is provided, by changing the connected mode of gold utensil, make the gold utensil string can the low-angle earth's axis to reversing, thereby avoid composite insulator generation axial torsion, destroy the strength of connection of plug and end gold utensil.
It is as follows that the utility model solves the problems of the technologies described above the technical scheme that is adopted:
The hookup of a kind of overhead transmission line composite insulator and gold utensil string, the earth terminal that comprises overhead transmission line, the high-pressure side of overhead transmission line and the composite insulator between earth terminal and high-pressure side, it is characterized in that: the two ends of composite insulator are respectively arranged with screw, and at least one is connected with described two screws by bolt and is used for the inner arc U-loop that is connected with earth terminal or high-pressure side.
One of preferred version: between an end of composite insulator and the earth terminal by two mutually the inner arc U-loops of series connection is connected, also be connected between the other end of composite insulator and the high-pressure side by two mutual inner arc U-loops of connecting.
Two of preferred version: have two groups of inner arc U-loops between the upper end of composite insulator and the earth terminal, every group two series connection mutually, link to each other by pull bar between two groups, wherein Zui Shangduan inner arc U-loop is connected with described earth terminal by bolt, and inner arc U-loop opening bottom is connected with the upper end of composite insulator to oblique below and by bolt; The lower end of composite insulator is connected with the duplicate invoice plate by bolt, the duplicate invoice plate is connected with the first main yoke plate by bolt, the first main yoke plate is connected with an inner arc U-loop by bolt, the lower end of this inner arc U-loop is connected with another inner arc U-loop by prolonging ring, and inner arc U-loop bottom is connected with high-pressure side by bolt.
Good effect of the present utility model is: (1), cancelled R shape pin, and stopped bulb, ball-and-socket that conductor galloping or super designing wind speed may occur and broken away from and cause falling the string phenomenon; (2), by the syndeton of two and above inner arc U-loop uniqueness, make the gold utensil string can the low-angle earth's axis to reversing, guarantee the mechanical performance of composite insulator, make the transmission line safe and reliable operation.(3), for the V-arrangement string, prolong the alternative parallel link plate of ring with two inner arc U-loops with one between two main yoke plates, improved two main yoke plates and be connected gold utensil complicated stressing conditions under oblique side direction wind effect, effectively alleviated lead and waved influence up and down the V-arrangement string.
(4), description of drawings Fig. 1 is the structural representation that the utility model dangles and goes here and there.
Fig. 2 is the structural representation of the utility model strain insulator-string.
Fig. 3 is the structural representation of the utility model V-arrangement string.
(5), embodiment further specifies the utility model below in conjunction with drawings and Examples.
Embodiment one, string dangles
As shown in Figure 1, present embodiment comprises composite insulator 1, and the upper end of composite insulator 1 is provided with screw 4, and the lower end is provided with down screw 5.Have two inner arc U-loops 2 of connecting mutually between the upper end of composite insulator 1 and the earth terminal of overhead transmission line 3, wherein Shang Duan inner arc U-loop 2 openings upwards and by bolt are connected with described earth terminal 3, and Open Side Down and be connected with the upper end of composite insulator 1 by the bolt that penetrates in the screw 4 for the inner arc U-loop 2 of lower end.
Also have two inner arc U-loops 2 of connecting mutually between the lower end of composite insulator 1 and the high-pressure side of overhead transmission line 6, wherein Shang Duan inner arc U-loop 2 openings upwards and by the bolt that penetrates down in the screw 5 are connected with the lower end of composite insulator 1, and Open Side Down and be connected with described high-pressure side 6 by bolt for the inner arc U-loop 2 of lower end.
Embodiment two, strain insulator-string
As shown in Figure 2, present embodiment comprises composite insulator 1, and the two ends, the left and right sides of composite insulator 1 are provided with screw.Have two inner arc U-loops 2 of connecting mutually between the left end of composite insulator 1 and the earth terminal of overhead transmission line 3, one of them inner arc U-loop 2 opening is connected with described earth terminal 3 left and by bolt, and another inner arc U-loop 2 openings are connected to the right and by the left end of bolt with composite insulator 1.
Also have two inner arc U-loops 2 of connecting mutually between the right-hand member of composite insulator 1 and the high-pressure side of overhead transmission line 6, one of them inner arc U-loop 2 opening is connected left and by the right-hand member of bolt with composite insulator 1, and another inner arc U-loop 2 openings are connected with described high-pressure side 6 to the right and by bolt.
Embodiment three, V-arrangement string
As shown in Figure 3, present embodiment comprises composite insulator 1, and the two ends of composite insulator 1 are respectively arranged with screw.Have two groups of inner arc U-loops 2 between the upper end of composite insulator 1 and the earth terminal of overhead transmission line 3, two every group series connection mutually link to each other by pull bar 7 between two groups.Wherein Zui Shangduan inner arc U-loop 2 openings are connected with described earth terminal 3 obliquely upward and by bolt, and inner arc U-loop 2 openings bottom are connected to oblique below and by the upper end of bolt with composite insulator 1.
The lower end of composite insulator 1 is connected with duplicate invoice plate 8 by bolt, duplicate invoice plate 8 is connected with the first main yoke plate 9 by bolt, the first main yoke plate 9 is connected with an inner arc U-loop 2 by bolt, the lower end of this inner arc U-loop 2 is connected with another inner arc U-loop 2 by prolonging ring 10, and inner arc U-loop 2 bottom is connected with the high-pressure side 6 of overhead transmission line by bolt.
Claims (3)
1. the hookup of overhead transmission line composite insulator and gold utensil string, the earth terminal (3) that comprises overhead transmission line, the high-pressure side of overhead transmission line (6) and be positioned at earth terminal (3) and high-pressure side (6) between composite insulator (1), it is characterized in that: the two ends of composite insulator (1) are respectively arranged with screw, and at least one is connected with described two screws by bolt and is used for the inner arc U-loop (2) that is connected with earth terminal (3) or high-pressure side (6).
2. the hookup of overhead transmission line composite insulator as claimed in claim 1 and gold utensil string, it is characterized in that: between an end of composite insulator (1) and the earth terminal (3) by two mutually the inner arc U-loops (2) of series connection is connected, also be connected between the other end of composite insulator (1) and the high-pressure side (6) by two mutual inner arc U-loops (2) of connecting.
3. the hookup of overhead transmission line composite insulator as claimed in claim 1 and gold utensil string, it is characterized in that: have two groups of inner arc U-loops (2) between the upper end of composite insulator (1) and the earth terminal (3), every group two series connection mutually, link to each other by pull bar (7) between two groups, wherein Zui Shangduan inner arc U-loop (2) is connected with described earth terminal (3) by bolt, and inner arc U-loop (2) opening bottom is connected to oblique below and by the upper end of bolt with composite insulator (1); The lower end of composite insulator (1) is connected with duplicate invoice plate (8) by bolt, duplicate invoice plate (8) is connected with the first main yoke plate (9) by bolt, the first main yoke plate (9) is connected with an inner arc U-loop (2) by bolt, the lower end of this inner arc U-loop (2) is connected with another inner arc U-loop (2) by prolonging ring (10), and inner arc U-loop (2) bottom is connected with high-pressure side (6) by bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020131366XU CN201750110U (en) | 2010-03-11 | 2010-03-11 | Connecting device of overhead power transmission line composite insulator and hardware string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020131366XU CN201750110U (en) | 2010-03-11 | 2010-03-11 | Connecting device of overhead power transmission line composite insulator and hardware string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201750110U true CN201750110U (en) | 2011-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201020131366XU Expired - Fee Related CN201750110U (en) | 2010-03-11 | 2010-03-11 | Connecting device of overhead power transmission line composite insulator and hardware string |
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| CN (1) | CN201750110U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280227A (en) * | 2011-07-15 | 2011-12-14 | 山东电力集团公司烟台供电公司 | Composite insulator tension string of overhead transmission line |
| CN102280226A (en) * | 2011-07-15 | 2011-12-14 | 山东电力集团公司烟台供电公司 | Composite insulator suspension string in overhead transmission line |
| CN102290735A (en) * | 2011-05-05 | 2011-12-21 | 山西省电力公司阳泉供电分公司 | Novel special triangular bracket for replacing insulator bracket of insulator string on electric transmission line |
| CN108550447A (en) * | 2018-06-29 | 2018-09-18 | 国网湖南省电力有限公司 | The special-shaped composite insulator of inclination arrangement |
-
2010
- 2010-03-11 CN CN201020131366XU patent/CN201750110U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290735A (en) * | 2011-05-05 | 2011-12-21 | 山西省电力公司阳泉供电分公司 | Novel special triangular bracket for replacing insulator bracket of insulator string on electric transmission line |
| CN102290735B (en) * | 2011-05-05 | 2016-03-30 | 山西省电力公司阳泉供电分公司 | A kind of for the special tripod of insulator cradle for replacing insulator string of power transmission line |
| CN102280227A (en) * | 2011-07-15 | 2011-12-14 | 山东电力集团公司烟台供电公司 | Composite insulator tension string of overhead transmission line |
| CN102280226A (en) * | 2011-07-15 | 2011-12-14 | 山东电力集团公司烟台供电公司 | Composite insulator suspension string in overhead transmission line |
| CN108550447A (en) * | 2018-06-29 | 2018-09-18 | 国网湖南省电力有限公司 | The special-shaped composite insulator of inclination arrangement |
| CN108550447B (en) * | 2018-06-29 | 2023-09-19 | 国网湖南省电力有限公司 | Obliquely-arranged special-shaped composite insulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANDONG ELECTRIC POWER CORPORATION YANTAI POWER S Effective date: 20130513 Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: SHANDONG ELECTRIC POWER CORPORATION YANTAI POWER SUPPLY CO., LTD. Effective date: 20130513 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 264000 YANTAI, SHANDONG PROVINCE TO: 100031 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130513 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: Yantai Power Supply Co., Ltd., Shandong Electric Power Corporation Address before: 264000 Jiefang Road, Zhifu, Shandong, No. 158, Patentee before: Yantai Power Supply Co., Ltd., Shandong Electric Power Corporation |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110216 Termination date: 20160311 |