CN202167301U - Insulator and ground wire structure for extra-high voltage direct current transmission line project - Google Patents
Insulator and ground wire structure for extra-high voltage direct current transmission line project Download PDFInfo
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- CN202167301U CN202167301U CN2011202984609U CN201120298460U CN202167301U CN 202167301 U CN202167301 U CN 202167301U CN 2011202984609 U CN2011202984609 U CN 2011202984609U CN 201120298460 U CN201120298460 U CN 201120298460U CN 202167301 U CN202167301 U CN 202167301U
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- umbellule
- gamp
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Abstract
The utility model discloses an insulator and a ground wire structure for an extra-high voltage direct current transmission line project. The insulator comprises a rod body and a petticoat arranged on the periphery of the rod body, wherein the petticoat comprises large sheds and small sheds which are alternately arranged, and the total quantity of the large sheds and the small sheds ranges from 5 to 15. The ground wire structure of a direct current transmission line comprises an optical fiber composite overhead ground wire serving as a ground wire, a downlead clamp, a surplus cable frame and a junction box, wherein the downlead clamp leads the optical fiber composite overhead ground wire down from an iron tower, and the downlead clamp, the surplus cable frame and the junction box are connected with the iron tower respectively through the insulator. The insulator can be used in the +/-800kV extra-high voltage direct current transmission line project, enables an optical fiber composite overhead ground wire (OPGW) optical fiber, the downlead clamp, the junction box and the surplus cable frame to be effectively insulated with the iron tower, avoids corrosion of foundation steel bars such as a tower body and underground metal component parts, and effectively solves the problem of insulation gap discharging.
Description
Technical field
The utility model relates to a kind of insulator and ground configurations that is used for the extra high voltage direct current transmission line engineering.
Background technology
Along with the electric power development general policy of China's " transferring electricity from the west to the east, north and south supplies mutually, national network ", high voltage dc transmission technology will become the interconnected main path of China's electrical network.High voltage direct current transmission occupies extremely important position at remote, vast capacity in transmitting electricity.But DC power transmission line is under the system debug or the situation that breaks down; Can be in one pole ground return circuit operational mode; At this moment will have very large electric current to flow into the earth from direct current grounding pole, the earth formed bigger potential difference near this electric current made, and will have a negative impact to underground hardware etc.According to the regulation of 10.2.9 among the DL/T5224-2005 " the high voltage direct current transmission the earth returns operational system designing technique standard ", must effectively insulate over the ground near the lightning conducter of earth electrode (at least 10 kilometers long).
Design at present ± 800kV extra high voltage direct current transmission line engineering in a lightning conducter be the OPGW optical cable; The OPGW optical cable must draw lower contact about 4～5 kilometers; Guarantee that the OPGW optical cable effectively insulate; OPGW optical cable drop wire clip, terminal box and surplus cable frame must and tower insulation, especially for the situation of ± 800kV extra high voltage direct current transmission line process ± 500kV earth electrode utmost point location, need of the galvano-cautery of solution stray electrical current to circuit; The OPGW optical cable 20 kilometers long scopes that need insulate, this kind design requirement never occurred in traditional engineering.
Engineering in the past generally is employed in to be carried additionally the rod-plane gap insulator on the lightning conducter gold utensil string and guarantees effective insulation.For OPGW optical cable insulating Design, clearance for insulation is little, is prone to make the continuous discharge of OPGW optical cable and the OPGW optical cable takes place blow situation.
Therefore, for ± 800kV extra high voltage direct current transmission line engineering, a kind of apparatus that effectively makes OPGW optical cable, drop wire clip, terminal box and surplus cable frame and tower insulation need be provided, and can effectively solve clearance for insulation discharge problem.
The utility model content
The purpose of the utility model is to provide a kind of novel insulator; Can be used in ± 800kV extra high voltage direct current transmission line engineering effectively insulate OPGW optical cable, drop wire clip, terminal box and surplus cable frame and iron tower; Avoid the corrosion of reinforcement foundations such as body of the tower and underground hardware, and effectively solve clearance for insulation discharge problem.
Another purpose of the utility model is to provide a kind of ground configurations of DC power transmission line.
The first aspect of the utility model provides a kind of insulator, the cluster parachute that comprises barred body and be arranged on the barred body periphery; It is characterized in that; Said cluster parachute comprises gamp and umbellule, and said gamp, umbellule alternately arrange each other, and the total quantity of gamp and umbellule is that 5-15 is individual.
In another preference, the upper and lower surface of said gamp and said umbellule all is smooth.
In another preference, said barred body and said cluster parachute are integrated.
In another preference, the umbrella diameter of said gamp is 120mm～130mm, and the umbrella diameter of said umbellule is 100mm～110mm;
The quantity of said gamp is four or five, is spaced apart 50mm～60mm between adjacent two gamps; The quantity of said umbellule is three or four, is spaced apart 25mm～30mm between said umbellule and the adjacent said gamp.
In another preference, the length of said barred body is 200mm～280mm, and diameter is 40～50mm.
The second aspect of the utility model provides a kind of ground configurations of DC power transmission line, said ground configurations to comprise the OPGW as ground wire, and drop wire clip, surplus cable frame, terminal box under this OPGW drawn from iron tower,
Wherein, said drop wire clip, surplus cable frame, terminal box all are connected with iron tower through each described insulator of claim 1～5.
In another preference; Said insulator one end is connected on the iron tower through angle steel; Fixing two insulators on the said angle steel: on the barred body of said insulator one end screw thread is set, forms a screw rod, the two ends of said angle steel respectively are provided with a screw; Said screw rod screws in screw, and on the screw rod of said screw both sides, is screwed with spring washer, plain washer and nut successively.
In another preference, said drop wire clip top is provided with a groove, is used to place OPGW;
Said OPGW is fixed in the said groove through wiring, and perhaps said drop wire clip top is provided with a securing member, and said OPGW is fixed in the said groove.
In another preference, adjacent on the said iron tower two angle steel are set, the distance between the screw of said two angle steel homonymies is 300～400mm;
The said insulator other end is connected with said surplus cable frame through bending plate: said bending plate two ends respectively are provided with a screw; Screw thread also is set on the barred body of the said insulator other end; Form screw rod; This screw rod screws in the screw of bending plate, and on the screw rod of the both sides of the screw of said bending plate, is screwed with spring washer, plain washer and nut successively;
Said two angle steel are connected with a said bending plate through two said insulators respectively, and two bending plates laterally arrange, and said surplus cable frame is fixed on two bending plates.
In another preference, the said insulator other end is connected with said terminal box through a transverse slat:
Said terminal box is erected on the said transverse slat, and the two ends of said transverse slat are provided with two screws;
On the barred body of the said insulator other end screw thread is set, forms screw rod, this screw rod screws in the screw of said transverse slat, and on the screw rod of these screw both sides, be screwed with spring washer successively, plain washer and nut.
The insulator of the utility model; Can be used in ± 800kV extra high voltage direct current transmission line engineering; OPGW optical cable, drop wire clip, terminal box and surplus cable frame and iron tower are effectively insulated, avoid the corrosion of reinforcement foundations such as body of the tower and underground hardware, and effectively solve clearance for insulation discharge problem.
In should be understood that in the utility model scope, above-mentioned each technical characterictic of the utility model and hereinafter can mutual combination between specifically described each technical characterictic in (like embodiment), thus constitute new or optimized technical scheme.As space is limited, this tired no longer one by one stating.
Description of drawings
Fig. 1 is the structural representation of the insulator of the utility model.
Fig. 2 is OPGW optical cable mode sketch map under the drawing on the iron tower.
Fig. 3 is insulator and angle steel, drop wire clip syndeton sketch map.
Fig. 4 is the structural representation that is used for fixing the wiring of OPGW optical cable.
Fig. 5 is insulator and angle steel, surplus cable frame connecting structure sketch map.
Embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that following examples only to be used to the utility model is described and be not used in the restriction the utility model scope.
In the utility model, said OPGW optical cable is also claimed OPGW; Be placed on optical fiber in the ground wire of aerial high voltage power line; In order to constitute the fiber optic communication network on the transmission line, this version has the ground wire and the dual-use function of communicating by letter concurrently, is called the OPGW optical cable.
Embodiment 1
Insulator
As shown in Figure 1, the insulator of the utility model comprises:
Barred body 1; With
Preferably, the insulator of the utility model is 15kV～35kV synthetic insulator, i.e. organic silicon rubber insulator.Preferable, on strain tower, the insulator that connects OPGW optical cable drop wire clip and connector box is the 35kV synthetic insulator, can effectively solve clearance for insulation discharge problem.
In a preference, the upper and lower surface of said gamp 21 and said umbellule 22 all is smooth.
In a preference, the umbrella diameter of said gamp 21 is 120mm～130mm, and the umbrella diameter of said umbellule 22 is 100mm～110mm, and the quantity of said gamp 21 is four or five, is spaced apart 50mm～60mm between adjacent two gamps 21; The quantity of said umbellule 22 is three or four, is spaced apart 25mm～30mm between said umbellule 22 and the adjacent said gamp 21.
In a preference, the length of said barred body 1 is 200mm～280mm, and diameter is 40～50mm.
The ground configurations of DC power transmission line
The ground configurations of the DC power transmission line of the utility model; Comprise OPGW as ground wire; And drop wire clip, surplus cable frame, terminal box under this OPGW drawn from iron tower; Wherein, said drop wire clip, surplus cable frame, terminal box all are connected with iron tower through insulator.
As shown in Figure 2, the OPGW optical cable 6 that is arranged on the iron tower upper end is fixing through several drop wire clips 5 successively, arrives the iron tower bottom, and after coiling on the surplus cable frame 8, end is connected into terminal box 9.On iron tower, adjacent two said drop wire clips 5 be spaced apart 1.5m～2m, and the position that said terminal box 9 is erected on the iron tower should be no less than 15m apart from ground.
One end of the insulator of the utility model is connected on the iron tower, and the other end is connected with drop wire clip, surplus cable frame, terminal box, thereby makes the insulation of OPGW optical cable through drop wire clip, surplus cable frame, terminal box and iron tower are effectively insulated.
In a preferred embodiment of the utility model, as shown in Figure 3, insulator one end is connected on the iron tower (figure does not show) through angle steel 3, and the other end is connected with drop wire clip 5.On the barred body of said insulator one end screw thread is set, forms a screw rod 4, the two ends of said angle steel 3 respectively are provided with a screw (figure does not show), and said screw rod 4 screws in screw.Can fix two insulators on each angle steel.Loosening for preventing insulator, before screw rod 4 screws in screw, on screw rod 4, be screwed into nut, plain washer and spring washer successively, before behind the screw rod 4 screw-in screws, on screw rod 4, be screwed into spring washer, plain washer and nut successively again.Said drop wire clip 5 tops are provided with a groove, are used to place OPGW optical cable 6, further; Said drop wire clip 5 tops also are provided with a securing member; After being placed on OPGW optical cable 6 in the groove, said securing member can be fixed on the OPGW optical cable in the groove, prevents that the OPGW optical cable breaks away from groove.Perhaps, as shown in Figure 4, adopt wiring 11 that OPGW optical cable 6 is fixed in the groove, preferred, said wiring 11 is processed by aluminium Baogang.
In a preferred embodiment of the utility model, as shown in Figure 5, insulator one end is connected on the iron tower (figure does not show) through angle steel 3, and the other end is connected with bending plate 7.On the barred body at said insulator two ends screw thread is set all; Form screw rod 4; The two ends of said angle steel 3 respectively are provided with a screw (figure do not show), and said bending plate two ends respectively are provided with a screw 71, and the screw rod 4 at said insulator two ends screws in the screw 71 of bending plate of the screw of angle steel respectively.Can fix two insulators on each angle steel, the other end of said two insulators is connected in same bending plate 7, and two angle steel 3 are set on iron tower at interval; Preferably, the distance between the screw of said two angle steel 3 is 300mm～400mm, and is preferable; Be 350mm, each angle steel 3 all is connected with a bending plate 7 through two insulators, and two bending plates 7 laterally arrange; Be used for fixing surplus cable frame 8, said surplus cable frame 8 is used to coil the OPGW optical cable.Likewise, loosening for preventing insulator, before screw rod 4 screws in screw, on screw rod 4, be screwed into nut, plain washer and spring washer successively, before behind the screw rod 4 screw-in screws, on screw rod 4, be screwed into spring washer, plain washer and nut successively again.
When the insulator of the utility model was used to connect terminal box, an end of insulator adopted mode same as described above to be connected with iron tower, connected two insulators on each angle steel.Said terminal box is erected on the transverse slat, and the two ends of said transverse slat are provided with two screws, and the screw rod of the other end of said two insulators screws in two screws respectively, for preventing to become flexible, adopts screw-in mode same as described above.
The downlead anchor clamps that the utility model adopts, bending plate, surplus cable frame, transverse slat etc. all can adopt galvanized steel to process.
Use the insulator of the utility model; Drop wire clip, terminal box and surplus cable frame and iron tower are effectively insulated; Guarantee that the OPGW optical cable effectively insulate, avoid the corrosion of reinforcement foundations such as body of the tower and underground hardware, and the OPGW optical cable 20 kilometers long scopes that can insulate.
The insulator of the utility model can be used in ± 800kV extra high voltage direct current transmission line engineering.On tangent tower, the OPGW optical cable is all by insulation processing, adopts the graded insulation mode of an end ground connection, end insulation at the strain tower rear side of going forward, and reduces induced voltage.In addition, on strain tower, adopt the 35kV synthetic insulator, can effectively solve clearance for insulation discharge problem.
Should be understood that in addition after having read the above-mentioned teachings of the utility model, those skilled in the art can do various changes or modification to the utility model, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Claims (10)
1. insulator, the cluster parachute that said insulator comprises barred body and is arranged on the barred body periphery is characterized in that, said cluster parachute comprises gamp and umbellule, and said gamp, umbellule alternately arrange each other, and the total quantity of gamp and umbellule is that 5-15 is individual.
2. insulator as claimed in claim 1 is characterized in that, the upper and lower surface of said gamp and said umbellule all is smooth.
3. insulator as claimed in claim 1 is characterized in that, said barred body and said cluster parachute are integrated.
4. insulator as claimed in claim 1 is characterized in that, the umbrella diameter of said gamp is 120mm～130mm, and the umbrella diameter of said umbellule is 100mm～110mm;
The quantity of said gamp is four or five, is spaced apart 50mm～60mm between adjacent two gamps; The quantity of said umbellule is three or four, is spaced apart 25mm～30mm between said umbellule and the adjacent said gamp.
5. insulator as claimed in claim 1 is characterized in that, the length of said barred body is 200mm～280mm, and diameter is 40～50mm.
6. the ground configurations of a DC power transmission line is characterized in that, said ground configurations comprises the OPGW as ground wire, and drop wire clip, surplus cable frame, terminal box under this OPGW drawn from iron tower,
Wherein, said drop wire clip, surplus cable frame, terminal box all are connected with iron tower through each described insulator of claim 1～5.
7. ground configurations as claimed in claim 6; It is characterized in that said insulator one end is connected on the iron tower through angle steel, fixing two insulators on the said angle steel: on the barred body of said insulator one end screw thread is set; Form a screw rod; The two ends of said angle steel respectively are provided with a screw, and said screw rod screws in screw, and on the screw rod of said screw both sides, is screwed with spring washer, plain washer and nut successively.
8. ground configurations as claimed in claim 7 is characterized in that, said drop wire clip top is provided with a groove, is used to place OPGW;
Said OPGW is fixed in the said groove through wiring, and perhaps said drop wire clip top is provided with a securing member, and said OPGW is fixed in the said groove.
9. ground configurations as claimed in claim 7 is characterized in that, adjacent on the said iron tower two angle steel is set, and the distance between the screw of said two angle steel homonymies is 300～400mm;
The said insulator other end is connected with said surplus cable frame through bending plate: said bending plate two ends respectively are provided with a screw; Screw thread also is set on the barred body of the said insulator other end; Form screw rod; This screw rod screws in the screw of bending plate, and on the screw rod of the both sides of the screw of said bending plate, is screwed with spring washer, plain washer and nut successively;
Said two angle steel are connected with a said bending plate through two said insulators respectively, and two bending plates laterally arrange, and said surplus cable frame is fixed on two bending plates.
10. ground configurations as claimed in claim 7 is characterized in that, the said insulator other end is connected with said terminal box through a transverse slat:
Said terminal box is erected on the said transverse slat, and the two ends of said transverse slat are provided with two screws;
On the barred body of the said insulator other end screw thread is set, forms screw rod, this screw rod screws in the screw of said transverse slat, and on the screw rod of these screw both sides, be screwed with spring washer successively, plain washer and nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202984609U CN202167301U (en) | 2011-08-17 | 2011-08-17 | Insulator and ground wire structure for extra-high voltage direct current transmission line project |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202984609U CN202167301U (en) | 2011-08-17 | 2011-08-17 | Insulator and ground wire structure for extra-high voltage direct current transmission line project |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202167301U true CN202167301U (en) | 2012-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202984609U Expired - Lifetime CN202167301U (en) | 2011-08-17 | 2011-08-17 | Insulator and ground wire structure for extra-high voltage direct current transmission line project |
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| CN (1) | CN202167301U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105220933A (en) * | 2015-10-21 | 2016-01-06 | 常熟风范电力设备股份有限公司 | A kind of steel tower cross-arm component |
| CN107171248A (en) * | 2017-06-29 | 2017-09-15 | 中国电力工程顾问集团西南电力设计院有限公司 | The staged sub-pieces number collocation method of ± 800kV extra-high voltage direct current ground electrode circuits |
| CN108572423A (en) * | 2018-07-17 | 2018-09-25 | 国网山西省电力公司忻州供电公司 | Substation divides cable frame more than cable type OPGW |
-
2011
- 2011-08-17 CN CN2011202984609U patent/CN202167301U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105220933A (en) * | 2015-10-21 | 2016-01-06 | 常熟风范电力设备股份有限公司 | A kind of steel tower cross-arm component |
| CN107171248A (en) * | 2017-06-29 | 2017-09-15 | 中国电力工程顾问集团西南电力设计院有限公司 | The staged sub-pieces number collocation method of ± 800kV extra-high voltage direct current ground electrode circuits |
| CN107171248B (en) * | 2017-06-29 | 2018-11-09 | 中国电力工程顾问集团西南电力设计院有限公司 | The staged insulator the piece number configuration method of ± 800kV extra-high voltage direct current ground electrode circuits |
| CN108572423A (en) * | 2018-07-17 | 2018-09-25 | 国网山西省电力公司忻州供电公司 | Substation divides cable frame more than cable type OPGW |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 200063 Wuning Road, Shanghai, No. 409, No. Patentee after: Co., Ltd of Huabei Power Design Inst., China Power Engineering Consulting Group Address before: 200063 Wuning Road, Shanghai, No. 409, No. Patentee before: Huabei Power Design Inst., China Power Engineering Consulting Group |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120314 |