CN203760918U - Strain triple intermediate string clamp of 1000-kV ultra-high voltage transmission line - Google Patents
Strain triple intermediate string clamp of 1000-kV ultra-high voltage transmission line Download PDFInfo
- Publication number
- CN203760918U CN203760918U CN201420096430.3U CN201420096430U CN203760918U CN 203760918 U CN203760918 U CN 203760918U CN 201420096430 U CN201420096430 U CN 201420096430U CN 203760918 U CN203760918 U CN 203760918U
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- China
- Prior art keywords
- card
- clamp
- end portion
- cross arm
- arm end
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- Expired - Fee Related
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 16
- 238000010276 construction Methods 0.000 claims abstract description 8
- 229910001069 Ti alloy Inorganic materials 0.000 claims abstract description 7
- 239000000956 alloy Substances 0.000 claims abstract description 4
- 239000012211 strain insulator Substances 0.000 claims description 10
- 239000012212 insulator Substances 0.000 abstract description 26
- 238000009434 installation Methods 0.000 abstract description 4
- 239000004020 conductor Substances 0.000 description 9
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model discloses a strain triple intermediate string clamp of a 1000-kV ultra-high voltage transmission line. The clamp comprises an enclosed clamping front clamp, an enclosed clamping rear clamp, and hydraulic lead screws, cross arm end portion clamps, and a lead end portion clamp. A fixed hole for connection with a yoke plate construction hole is formed in the center of the lead end portion clamp; outward extending arms are arranged at the two sides of the lead end portion clamp; connecting holes connected with one ends of the hydraulic lead screws are formed in the end portions of the extending arms; and the extending arm at one side is hinged with the end portion by a bolt and a nut. The cross arm end portion clamps are two identical long strip-shaped connecting plates; one ends of the cross arm end portion clamps are provided with connecting holes hinged with the hydraulic lead screws; and the other ends of the cross arm end portion clamps are provided with fixed holes hinged with a triple string yoke plate. Besides, the cross arm end portion clamps, the lead end portion clamp, the enclosed clamping front clamp, and the enclosed clamping rear clamp are made of titanium alloy materials. Moreover, the provided clamp has advantages of simple structure, high strength, light weight, good force bearing performance, and convenient installation and is suitable for replacing the intermediate string insulator of the ultra-high voltage triple string.
Description
Technical field
The utility model relates to insulator string in a kind of ultrahigh voltage alternating current transmission lines strain insulator three strings and changes jig.
Background technology
Build up and put into operation along with 1000kV UHV transmission line, guarantee line security operation, improve equipment availability and become the most important thing of circuit operation.In service at transmission line, inevitably there are the various situations that affect the circuit general level of the health, wherein insulator damage is the most common line defct.Conventional extra high voltage network adopts conductors on quad bundled more, and strain insulator-string is stressed less, and strain insulator-string adopts duplex string more, is connected in parallel by a yoke plate, in the time that jig designs, can design jig as tie point at hardware string two ends gold utensil, is easy to realize.
1000kV UHV transmission line adopts eight bundle conductors, and strain insulator-string tension force is large, and therefore strain insulator-string adopts three string structures conventionally.In 3 string structures whens design, in order to ensure that three strings respectively go here and there insulation stress equalization, adopt two yoke plates to be connected in parallel conventionally, and middle string is between yoke plate, to be connected to two yoke plate hinge positions in conductor wire end, can design fixture without other gold utensils.In order to ensure the corona characteristic of circuit, conventionally at insulator end design shielding grading ring, because three strings take up room greatly, cause shielding Equalized voltage ring construction size large, and ring body embeds in insulator string, when therefore its jig designs, is designed with obviously different from traditional extra high voltage network jig.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of Work tool of changing operation for 1000kV UHV transmission line eight bundle conductor triplet strain insulator-string insulator strings, and claimed structure is simple, intensity is higher, quality is light and handy, operate simple and easy, safe special mould clamp.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: in 1000kV UHV transmission line strain insulator three, go here and there jig, comprise card and hydraulic screw rod after card before closed fixture, closed fixture, also comprise cross arm end card and wire termination card;
Wire termination card central authorities are provided with the fixing hole for being connected with yoke plate construction hole, and wire termination card both sides are outside cantilever arm, and the end of cantilever arm is provided with the connecting hole for being connected with hydraulic screw rod one end; Wherein a side cantilever arm is hinged by screw bolt and nut and end;
Cross arm end card is 2 same strip connecting plates, and one end of cross arm end card is provided with the connecting hole hinged with hydraulic screw rod, and the other end of cross arm end card is provided with for the fixing hole hinged with three consecutive yoke plates;
Before cross arm end card, wire termination card, closed fixture, after card, closed fixture, card all adopts titanium alloy material to make.
As preferably, the fixing hole of the cross arm end card other end is installed on the construction hole of three consecutive yoke plates by pin and guide.
As preferably, hydraulic screw rod is High Strength Hydraulic screw mandrel.
The beneficial effects of the utility model are:
In the 1000kV UHV transmission line strain insulator three that the utility model provides, go here and there jig for changing string cross-arm side first insulator and conductor wire end first insulator, made by titanium alloy.While changing cross-arm-end first insulator, adopt cross arm end to link and connect hydraulic screw rod and the front card realization of closed fixture; When restringing end first insulator, after employing wire termination links and connects hydraulic screw rod and closed fixture, card is realized.
Cross arm end card is split type, and the design of right cylinder type, is made by titanium alloy, is connected on yoke plate construction hole by pin; Wire termination card is consubstantiality separation design, is two parts of symmetry division, is made by titanium alloy, is arranged on the bolt of yoke plate hinge gold utensil.Above-mentioned end chucking appliance has the advantages such as intensity is high, lightweight, mechanical characteristic is good, easy for installation, is convenient to change the middle insulator string of ultra high voltage three strings.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 goes here and there the wire termination card structure schematic diagram of jig embodiment in the utility model 1000kV UHV transmission line strain insulator three.
Fig. 2 goes here and there the cross arm end card structure schematic diagram of jig embodiment in the utility model 1000kV UHV transmission line strain insulator three.
Fig. 3 is the A-A cutaway view of Fig. 1.
In figure, 1-tri-consecutive yoke plates, 2-cross arm end card, 3-hydraulic screw rod, 4-hydraulic screw rod telescopic end, 5-cross-arm-end first insulator, 6-renovates, 7-bolt, 8-fixing hole, 9-connecting plate, 10-connecting bolt, 11-wire termination card, 12-socket-clevis eye, 13-conductor wire end first insulator, 14-guide, 15-pin.
Embodiment
A replacing jig for insulator string in 1000kV UHV transmission line strain insulator three, is applicable to change and in three, goes here and there cross-arm-end first insulator and conductor wire end first insulator.Concrete operating type is as follows:
Change cross-arm-end first insulator as shown in Figure 1: before adopting cross arm end card 2 to connect hydraulic screw rod 3 and closed fixture, card (be stuck in Fig. 1 and do not mark before closed fixture) is realized.When operation, the other end of upper and lower two cross arm end cards 2 is arranged on respectively by connecting pin 15, guide 14 on the construction hole of three consecutive yoke plates 1 (Fig. 3).Insulator string 5 both sides in the middle of cross arm end card 2 is arranged in.Cross arm end card 2 other ends connect the bottom of hydraulic screw rod 3, and hydraulic screw rod telescopic end 4 blocks before being connected to closed fixture, and before closed fixture, card is arranged on the 3rd insulator of cross-arm-end.When operation, by tightening up hydraulic screw rod 3, lax insulator, realizes that cross-arm-end first insulator 5 is extractd, installation exercise.
Restringing end first insulator is as shown in Figure 2: after adopting wire termination card 11 to connect hydraulic screw rod and closed fixture, card (be stuck in Fig. 2 and do not mark after hydraulic screw rod and closed fixture) is realized.When operation, renovating of wire termination card 11 6 opened, the fixing hole 8 in the middle of wire termination card is contained on the bolt of socket-clevis eye 12, sealing renovates 6, by bolt 7 and fastening nuts; Wire termination cartoon crosses connecting plate 9 and connecting bolt 10 is hinged with hydraulic screw rod telescopic end, insulator string both sides in the middle of hydraulic screw rod is arranged in.After the rear end of hydraulic screw rod and closed fixture, link and connect, after closed fixture, card is arranged on the 3rd insulator of conductor wire end.When operation, by tightening up hydraulic screw rod, lax insulator, realizes that conductor wire end first insulator 13 is extractd, installation exercise.
In order significantly to reduce jig weight, increase the intensity of jig, before above-mentioned cross arm end card, wire termination card, closed fixture, after card, closed fixture, card is titanium alloy material.Hydraulic screw rod also uses High Strength Hydraulic screw mandrel.
Above-described the utility model execution mode, does not form the restriction to the utility model protection range.Any amendment of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in claim protection range of the present utility model.
Claims (3)
- In 1.1000kV UHV transmission line strain insulator three, go here and there jig, comprise card and hydraulic screw rod after card before closed fixture, closed fixture, it is characterized in that: also comprise cross arm end card and wire termination card;Described wire termination card central authorities are provided with the fixing hole for being connected with yoke plate construction hole, and wire termination card both sides are outside cantilever arm, and the end of described cantilever arm is provided with the connecting hole for being connected with hydraulic screw rod one end; Wherein a side cantilever arm is hinged by screw bolt and nut and end;Described cross arm end card is 2 same strip connecting plates, and one end of cross arm end card is provided with the connecting hole hinged with hydraulic screw rod, and the other end of cross arm end card is provided with for the fixing hole hinged with three consecutive yoke plates;Before described cross arm end card, wire termination card, closed fixture, after card, closed fixture, card all adopts titanium alloy material to make.
- 2. in 1000kV UHV transmission line strain insulator three according to claim 1, go here and there jig, it is characterized in that: the fixing hole of the described cross arm end card other end is installed on the construction hole of three consecutive yoke plates by pin and guide.
- 3. in 1000kV UHV transmission line strain insulator three according to claim 1, go here and there jig, it is characterized in that: described hydraulic screw rod is High Strength Hydraulic screw mandrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420096430.3U CN203760918U (en) | 2014-03-04 | 2014-03-04 | Strain triple intermediate string clamp of 1000-kV ultra-high voltage transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420096430.3U CN203760918U (en) | 2014-03-04 | 2014-03-04 | Strain triple intermediate string clamp of 1000-kV ultra-high voltage transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203760918U true CN203760918U (en) | 2014-08-06 |
Family
ID=51256155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420096430.3U Expired - Fee Related CN203760918U (en) | 2014-03-04 | 2014-03-04 | Strain triple intermediate string clamp of 1000-kV ultra-high voltage transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203760918U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103825217A (en) * | 2014-03-04 | 2014-05-28 | 国家电网公司 | Anti-tension triple-connected middle string clamp for 1,000kV ultrahigh-voltage power transmission line |
-
2014
- 2014-03-04 CN CN201420096430.3U patent/CN203760918U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103825217A (en) * | 2014-03-04 | 2014-05-28 | 国家电网公司 | Anti-tension triple-connected middle string clamp for 1,000kV ultrahigh-voltage power transmission line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20200304 |
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| CF01 | Termination of patent right due to non-payment of annual fee |