CN106558376B - V-shaped double-linked single-hanging-point four-split hanging string - Google Patents
V-shaped double-linked single-hanging-point four-split hanging string Download PDFInfo
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- CN106558376B CN106558376B CN201510518431.1A CN201510518431A CN106558376B CN 106558376 B CN106558376 B CN 106558376B CN 201510518431 A CN201510518431 A CN 201510518431A CN 106558376 B CN106558376 B CN 106558376B
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- 239000012212 insulator Substances 0.000 claims abstract description 38
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000725 suspension Substances 0.000 claims abstract description 18
- 229910052742 iron Inorganic materials 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 238000003466 welding Methods 0.000 claims description 12
- 230000013011 mating Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 3
- 208000025274 Lightning injury Diseases 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
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Abstract
A V-shaped double-linked single-hanging-point four-split hanging string. Relates to a suspension string for a power transmission line, in particular to a V-shaped double-linked single-hanging-point four-split suspension string. The method is suitable for higher and higher voltage levels, lightning protection and safe and stable operation of the power grid are guaranteed. The device comprises four hanging points, four splitting connecting plates, a reinforced connecting plate, two groups of hanging strings distributed in a V shape, a first arcing horn, a second arcing horn, a first arcing ring and a second arcing ring, wherein the hanging strings comprise insulator strings formed by connecting insulators. One end of the insulator string is connected with the cross arm of the iron tower, and the other end of the insulator string is connected with the four-hanging-point four-split yoke plate. The first arcing ring and the second arcing ring are matched with the first arcing angle and the second arcing angle. The number of split wires is increased, and the voltage class is adapted to be higher and higher. The stress structure is reasonable, and the normal operation of the power transmission line is ensured. The length of the suspension string is shortened, and the cost of the hardware fitting and the iron tower is reduced. Lightning protection. The method can be applied to wire two-split, three-split, four-split, six-split, eight-split and the like.
Description
Technical Field
The invention relates to a suspension string for a power transmission line, in particular to a V-shaped double-linked single-hanging-point four-split suspension string.
Background
Along with the construction of high voltage, the voltage level is higher and higher, the section of the wire is required to be increased, the number of split wires is required to be increased, the tonnage of the wire used in the hardware string, the size and tonnage of the hardware are required to be increased, the voltage is increased, the structural size between hanging points of the iron tower is also increased, the width of a line corridor is increased, the weight of the iron tower is increased, and the investment of engineering is increased. Line blackouts or insulator string drop accidents caused by lightning strokes can cause great harm to the safe operation of the whole power grid.
The national intellectual property office 2014-12-24 discloses an utility model patent (application number: 2014204119481 name: a double-split suspension string for high-voltage transmission lines above 500 kV) and discloses a double-split suspension string for high-voltage transmission lines, which comprises a single-hanging-point suspension device first yoke plate, a double-linkage suspension insulator string, a second yoke plate and two suspension clamps. One end of the first connecting plate is connected with the suspension device, and the other end of the first connecting plate is connected with the two-connected suspension insulator strings; each insulator string consists of a large-disc-diameter insulator and a small-disc-diameter insulator which are connected in series, and the small-disc-diameter insulators are connected between two adjacent large-disc-diameter insulators in series; one end of the second linkage plate is connected with the two-linkage suspension insulator strings, and the two suspension clamps are connected with the other end of the second linkage plate. The defects are that the method can not be suitable for high-voltage transmission lines with higher and higher voltage levels; the lightning stroke cannot be prevented, and the safety of the power grid is protected.
Disclosure of Invention
Aiming at the problems, the invention provides the V-shaped double-connection single-hanging-point four-split hanging string which can adapt to higher and higher voltage levels, prevent lightning stroke, ensure the safe and stable operation of a power grid and is used for high-voltage power transmission.
The technical scheme of the invention is as follows: the novel high-voltage power supply comprises four hanging point four-split connecting plates, a reinforced connecting plate, two groups of hanging strings distributed in a V shape, a first arcing horn, a second arcing horn, a first arcing ring and a second arcing ring, and is characterized in that the hanging strings comprise insulator strings formed by connecting insulators;
one end of the insulator string is connected with the cross arm of the iron tower, and the other end of the insulator string is connected with the four-hanging-point four-split yoke plate;
The first arcing horn is arranged on the bulb hanging ring; the second arcing horn is arranged in the middle of the iron tower; the ball head hanging ring is arranged on the reinforced connecting plate, and the first arcing horn is connected with the first arcing ring through the reinforced connecting plate; the first arcing ring and the second arcing ring are matched with the first arcing angle and the second arcing angle.
The first arcing horn and the arcing horn are semicircular.
The first arcing ring is connected with the reinforced connecting plate through bolts; and the second arcing ring is connected with the four-hanging-point four-split yoke plate through bolts.
The four-hanging-point four-splitting yoke plate comprises a yoke plate body and a yoke plate; the connecting plate body is sheet-shaped and consists of an upper cross beam, a lower cross beam and a supporting plate; the upper cross beam is trapezoid, the lower cross beam is triangular, and the supporting plate is vertical; upper beam welding grooves are formed in two end heads of the upper beam respectively; holes are formed in the long side direction of the connecting plate; the ends corresponding to the long side of the yoke plates are provided with yoke plate welding grooves; the connecting plate welding groove and the upper beam welding groove are mutually matched and welded.
The reinforced yoke plate comprises a triangular steel plate and a steel sleeve; the steel sleeve is nested in the triangular steel plate.
The gasket used by the matched bolt connected by the bolt is an integrated gasket; the integrated gasket consists of a gasket and a step; the gasket and the step are integrally connected.
The four-hanging-point four-splitting yoke plate is adopted in the invention, the number of split conductors is increased, the adaptive voltage level is higher and higher, the structural strength of hardware fitting and the integral strength of hanging strings are improved, the stress structure between products is more reasonable, and the normal operation of a power transmission line is ensured; meanwhile, the length of the suspension string is effectively shortened, so that the height of the tower body of the power transmission tower is reduced, and the manufacturing, transporting and construction costs of hardware fittings and the tower are reduced. The adoption of the arc-striking angle and the arc-striking ring are matched for use, the transmission line is protected from lightning stroke in thunderstorm weather, the transmission line is enabled to safely and stably run, the insulator string is protected, the service life of the insulator string is prolonged, and the V-shaped insulator string of the same type can be suitable for strings of split wires such as two split wires, three split wires, four split wires, six split wires and eight split wires.
Drawings
Figure 1 is a schematic view of the structure of the present invention,
Figure 2 is a schematic view of a series of hanging strings,
Figure 3 is a schematic diagram of a four-hanging-point four-split yoke plate structure,
Figure 4 is a schematic view of the structure of the reinforced yoke plate,
FIG. 5 is a schematic view of a flat washer and spring washer integrated washer construction;
In the figure, 1 is a four-hanging-point four-splitting yoke plate, 2 is a hanging string, 3 is a reinforced yoke plate, 4 is a first arcing horn, 5 is a second arcing horn, 6 is a first arcing ring, 7 is a second arcing ring, 8 is an integrated gasket, 101 is a yoke plate, 201 is a first insulating string, 202 is a second insulating string, 301 is a ball-head hanging ring, 302 is a triangular steel plate, 303 is a steel sleeve, 801 is a gasket, 802 is a step, 803 is a gap.
Detailed Description
The invention is shown as a figure 1, and comprises four hanging points, four splitting yoke plates 1, a reinforced yoke plate 3, two groups of hanging strings 2 distributed in a V shape, a first arcing horn 4, a second arcing horn 5, a first arcing ring 6 and a second arcing ring 7. The suspension string 2 comprises an insulator string 201 and an insulator string 202 which are formed by connecting insulators; one end of the insulator string 201 and one end of the insulator string 202 are connected with the cross arm of the iron tower, and the other end of the insulator string is connected with the four-hanging-point four-split yoke plate 1; the second arcing horn 5 is arranged in the middle of the iron tower; the first arc-striking corner 4 is arranged on the ball head hanging ring 301; the ball head hanging ring 301 is arranged on the reinforced connecting plate 3, and the first arcing horn 4 is connected with the first arcing ring 6 through the reinforced connecting plate 3; the first arcing ring 6 and the second arcing ring 7 are matched with the first arcing angle 4 and the second arcing angle 5.
The first arcing horn 4 and the second arcing horn 5 are semicircular.
The first arcing ring 6 is connected with the reinforced yoke plate through bolts; and the second arcing ring is connected with the four-hanging-point four-split yoke plate through bolts.
And the first arcing ring 6 and the second arcing ring 7 are matched with the first arcing angle 4 and the second arcing angle 5 for use, so that the safety of the lightning stroke on the circuit is ensured not to be affected, and the safe and stable operation of the circuit is ensured. Wherein the first arcing ring 6 and the second arcing ring 7 play a role in striking arcs, protecting the hanging string 2 and balancing voltage distribution on the surface of the hanging string; the V-shaped insulator string type with the same style can be suitable for string type of split wires such as two split wires, three split wires, four split wires, six split wires, eight split wires and the like.
As shown in fig. 2, one end of the insulator string 201 and one end of the insulator string 202 are connected to the yoke plate 101; the other end is connected with a reinforced yoke plate 3 to form a group of suspension strings 2; two yoke plates 101 are arranged on the four-hanging-point four-splitting yoke plate 1, a group of hanging strings 2 are arranged on each yoke plate 101, four hanging wire holes 102 are arranged on the four-hanging-point four-splitting yoke plate, and pre-twisted wire guard wires 103 are arranged in each hanging wire hole, so that four splitting of wires is realized. Increasing the number of splits of the wire enables higher voltage transmission. The preformed armor rod plays a role in protecting the wire and increasing the contact clamping area, so that the wire is clamped more firmly and the service life is longer. Increasing the contact area may further increase the transmission voltage.
As shown in fig. 3, the four-hanging-point four-split yoke plate 1 includes a yoke plate body 104 and a yoke plate 101; the yoke plate body 104 is in a sheet shape, and the yoke plate body 104 consists of an upper beam 1041, a lower beam 1042 and a supporting plate 1043; the upper beam 1041 is trapezoidal, the lower beam 1042 is triangular, and the support plate 1043 is vertical; upper beam welding grooves 1044 are respectively formed at two ends of the upper beam 1041; a plurality of holes 1011 are formed in the long side direction of the yoke plate 101; a header welding groove 1012 is formed at the end corresponding to the long side of the header 101; the header welding grooves 1012 and the upper beam welding grooves 1044 are welded in cooperation with each other. Because the four-hanging-point four-splitting yoke plate 1 adopts a whole shape, the strength of the yoke plate is enhanced, the length of the insulator string is also directly reduced, the structural size of the iron tower can be reduced, the height of the iron tower is reduced, and the raw materials are saved.
As shown in fig. 4, the reinforced yoke plate 3 includes a triangular steel plate 302 and a steel jacket 303; the steel sleeve 302 is nested in a triangular steel plate 303; a ball-head hanging ring 301 is arranged in the middle of the steel sleeve. The reinforced yoke plate 3 adopts the nested type, effectively solves the problems existing in the welding type in the prior art, and ensures that the yoke plate is more durable and saves raw materials while the strength of the yoke plate is increased.
As shown in fig. 5, the integrated washer 8 used for the bolt-coupled mating bolt; the integrated gasket 8 is composed of a gasket 801 and a step 802; the gasket 801 is annular; the diameter of the outer circle of the gasket 801 is the same as that of the flat gasket corresponding to the matched bolt, and the diameter of the inner hole can enable the matched bolt to pass through; two protruding steps 802 are arranged in the inner hole of the gasket 801 along the bolt tightening direction; one end of the step 802 is connected with a gasket; a gap 803 is formed between the highest of the steps 802 and the gasket. According to the invention, more bolt connection positions are adopted, and the integrated gasket is adopted, so that the flat gasket and the spring gasket are connected into a whole, the operation steps in the bolt connection are reduced, and the working efficiency is improved.
Claims (5)
1. The V-shaped duplex single-hanging-point four-split hanging string comprises four hanging-point four-split connecting plates, reinforced connecting plates, two groups of hanging strings distributed in a V shape, a first arcing angle, a second arcing angle, a first arcing ring and a second arcing ring, and is characterized in that the hanging string comprises an insulator string formed by connecting insulators;
One end of the insulator string is connected with the cross arm of the iron tower, and the other end of the insulator string is connected with the four-hanging-point four-split yoke plate;
the first arcing horn is arranged on the bulb hanging ring;
The second arcing horn is arranged in the middle of the iron tower;
The ball head hanging ring is arranged on the reinforced connecting plate, and the first arcing horn is connected with the first arcing ring through the reinforced connecting plate;
the first arcing ring and the second arcing ring are matched with the first arcing angle and the second arcing angle for use;
The four-hanging-point four-splitting yoke plate comprises a yoke plate body and a yoke plate;
The connecting plate body is sheet-shaped and consists of an upper cross beam, a lower cross beam and a supporting plate;
the upper cross beam is trapezoid, the lower cross beam is triangular, and the supporting plate is vertical;
Upper beam welding grooves are formed in two end heads of the upper beam respectively;
Holes are formed in the long side direction of the connecting plate;
The ends corresponding to the long side of the yoke plates are provided with yoke plate welding grooves;
The connecting plate welding groove and the upper beam welding groove are mutually matched and welded;
One end of the insulator string I and one end of the insulator string II are connected with the connecting plate, and the other end of the insulator string I and the insulator string II are connected with the reinforced connecting plate to form a group of suspension strings together; two yoke plates are arranged on the four-hanging-point four-splitting yoke plate, each yoke plate is provided with a group of hanging strings, four hanging wire holes are formed in the four-hanging-point four-splitting yoke plate, and preformed armor rods are arranged in each hanging wire hole to realize four-splitting of the wires; the preformed armor rods protect the wires and increase the contact clamping area.
2. The V-shaped duplex single-hitch point four-split hitch string of claim 1, wherein said arcing horn one and arcing horn are semicircular.
3. The V-shaped duplex single-hanging point four-split hanging string according to claim 1, wherein the first arcing ring and the reinforced yoke plate are connected by bolts;
And the second arcing ring is connected with the four-hanging-point four-split yoke plate through bolts.
4. The V-shaped duplex single-hitch point four-split hitch string of claim 1, wherein said reinforced yoke plate comprises a triangular steel plate and a steel sleeve;
the steel sleeve is nested in the triangular steel plate.
5. A V-twin single-hitch point four-split hitch string, as claimed in claim 3, wherein the washers used with the bolted mating bolts are integral washers;
the integrated gasket consists of a gasket and a step;
The gasket and the step are integrally connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510518431.1A CN106558376B (en) | 2015-09-29 | 2015-09-29 | V-shaped double-linked single-hanging-point four-split hanging string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510518431.1A CN106558376B (en) | 2015-09-29 | 2015-09-29 | V-shaped double-linked single-hanging-point four-split hanging string |
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| Publication Number | Publication Date |
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| CN106558376A CN106558376A (en) | 2017-04-05 |
| CN106558376B true CN106558376B (en) | 2024-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510518431.1A Active CN106558376B (en) | 2015-09-29 | 2015-09-29 | V-shaped double-linked single-hanging-point four-split hanging string |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109961618B (en) * | 2019-03-22 | 2020-09-01 | 国网湖南省电力有限公司 | Composite insulator V-shaped arrangement anti-string-falling treatment and warning method |
| CN111627620B (en) * | 2020-06-29 | 2024-05-24 | 中国电力工程顾问集团西南电力设计院有限公司 | Upper-carrying type suspension V-shaped insulator string |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201765890U (en) * | 2010-03-12 | 2011-03-16 | 山东电力研究院 | Parallel gap lightning protection device for overhead transmission line |
| 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 |
| CN204966180U (en) * | 2015-09-29 | 2016-01-13 | 江苏双汇孚泰电气有限公司 | Single string of point of V type pair quadripartion cluster that dangles |
-
2015
- 2015-09-29 CN CN201510518431.1A patent/CN106558376B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201765890U (en) * | 2010-03-12 | 2011-03-16 | 山东电力研究院 | Parallel gap lightning protection device for overhead transmission line |
| 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 |
| CN204966180U (en) * | 2015-09-29 | 2016-01-13 | 江苏双汇孚泰电气有限公司 | Single string of point of V type pair quadripartion cluster that dangles |
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| CN106558376A (en) | 2017-04-05 |
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| PB01 | Publication | ||
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Country or region after: China Address after: 225200 Longgang Road, Yiling Industrial Park, Jiangdu District, Yangzhou City, Jiangsu Province Applicant after: YANGZHOU FUTAI ELECTRIC Co.,Ltd. Address before: 225200 Longgang Road, Yiling Industrial Park, Jiangdu District, Yangzhou City, Jiangsu Province Applicant before: JIANGSU SHUANGHUI FUTAI ELECTRIC CO.,LTD. Country or region before: China |
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