CN108691450A - A kind of 500 kilovolts of single time electric power pylons - Google Patents
A kind of 500 kilovolts of single time electric power pylons Download PDFInfo
- Publication number
- CN108691450A CN108691450A CN201810809349.8A CN201810809349A CN108691450A CN 108691450 A CN108691450 A CN 108691450A CN 201810809349 A CN201810809349 A CN 201810809349A CN 108691450 A CN108691450 A CN 108691450A
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- Prior art keywords
- arm
- tower
- insulated compound
- steel tower
- cross
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- Pending
Links
- 150000001875 compounds Chemical class 0.000 claims abstract description 93
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 59
- 239000010959 steel Substances 0.000 claims abstract description 59
- 230000005540 biological transmission Effects 0.000 claims abstract description 26
- 241000283973 Oryctolagus cuniculus Species 0.000 claims abstract description 19
- 235000002259 Callirhoe involucrata Nutrition 0.000 claims abstract description 18
- 239000012212 insulator Substances 0.000 claims abstract description 16
- 241001339245 Callirhoe digitata Species 0.000 claims abstract 7
- 229910052751 metal Inorganic materials 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 15
- 239000000725 suspension Substances 0.000 claims description 9
- 239000004411 aluminium Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract description 21
- 240000006350 Callirhoe involucrata Species 0.000 abstract description 11
- 238000010276 construction Methods 0.000 abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 241000282326 Felis catus Species 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/02—Structures made of specified materials
- E04H12/08—Structures made of specified materials of metal
- E04H12/10—Truss-like structures
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/24—Cross arms
Abstract
The invention discloses a kind of 500 kilovolts of single time electric power pylons, solve the problems, such as the electric power pylon of voltage levels it is big exhale that high and long cross-arm brings occupy that transmission of electricity corridor space is big and steel tower construction cost is high.Wine cup shape steel tower tower body(11)With rabbit capitiform steel tower tower window(12), in rabbit capitiform steel tower tower window(12)In be provided with V-shaped laying middle phase insulator chain(20), in wine cup shape steel tower tower body(11)With rabbit capitiform steel tower tower window(12)Left side phase insulated compound cross-arm, left side phase insulated compound cross-arm are fixedly installed on the left and right lateral surface of junction(21)With the right phase insulated compound cross-arm(22)It is, left side phase insulated compound cross-arm symmetrically arranged as symmetry axis using steel tower central axes(21)With the right phase insulated compound cross-arm(22)Structure it is identical;Side phase insulated compound cross-arm is to form stable triangle planform with wine cup shape steel tower.Transmission of electricity width of corridor will have significant decrease, shaft tower weight to mitigate significantly.
Description
Technical field
The present invention relates to a kind of electric power pylon, more particularly to a kind of 500 kilovolts of single time electric power pylons.
Background technology
It with the development of power grid construction, transfers electricity from the west to the east, the power grid construction of north and south supply mutually, transmission line of electricity is more and more, transmission of electricity
The voltage class of circuit is also higher and higher, and the demand to steel is also increasing, consumes a large amount of mineral products energy, and cause
The destruction of ecological environment.Currently, 110kV above electric power line pole tower overwhelming majority in China uses all-steel structure, but steel are deposited
In quality weight, easy-to-rust or it is easy to crack the defects of, there is also the problem of construction transport and operation and maintenance difficulty, also, all steel knot
The transmission line of electricity of the shaft tower of structure is easy to happen failures and the accidents such as pollution flashover, windage yaw electric discharge.Existing electric power pylon is generally
Tallboy shape is fixedly installed linear type cross-arm on steel tower top, the exhausted of the suspension that is in the shape of the letter V is provided in the middle part of cross-arm
Edge substring, the phase transmission line of electricity in the lower end of the insulator chain of V-shaped is hung and is connected to, hangs in two outboard ends of cross-arm and is connected to side respectively
Phase insulator chain, in the phase transmission line of electricity when the lower end of phase insulator chain is hung and is connected to.It is special for the transmission line of electricity of voltage levels
It is not for 500 KV transmission lines, the length of side phase insulator chain can reach 5.5-6 meters or so, in order to overcome wind to put, it is necessary to
The length for lengthening steel tower cross-arm makes the length of cross-arm reach the length of 30-32 rice, meanwhile, the larger side phase insulator chain of length also increases
Big electric power pylon exhales height, and big exhales high and long cross-arm to considerably increase the cross section in transmission of electricity corridor, also considerably increases
The height of electric power pylon, makes transmission of electricity corridor more occupy environment space, and the construction of tall and big electric power pylon also consumes more
Steel resources, how the difficulty for also bringing the transport of steel tower and building to reduce the transmission of electricity of the electric power pylon of voltage levels
Corridor is taken up space, and saves the cost that steel tower is built and transported, and is become during voltage levels transmission line of electricity is built and is badly in need of
It solves the problems, such as.
The big cross-arm for exhaling height and length of the electric power pylon of voltage levels, brings and occupies transmission of electricity corridor large space and iron
The high-cost defect that tower is built is entangled the reason is that since steel tower and cross-arm are the conductive steel of ground connection, and voltage levels
Transmission line of electricity, the insulator chain of lengthening can only be leaned on to completely cut off high pressure, and the not wind resistance of the side phase insulator chain of 1 font hanging
Partially, the main reason for and causing above two defect.Composite material has high-strength, lightweight, corrosion-resistant, handling ease, can design
Property and the good advantage of insulation performance, are increasingly paid attention to by engineering circles, especially for power transmission and transformation industry engineer application institute pro-gaze;
The suspension strut of the side phase transmission line of electricity on electric power pylon how to be transformed using the composite material of insulation, is mutually insulated with reducing side
The length of substring becomes the problem of Transmission Line Design.
Invention content
The present invention provides a kind of 500 kilovolts of single time electric power pylons, solve the big of the electric power pylon of voltage levels
Exhale what high and long cross-arm brought to occupy the technical problem that transmission of electricity corridor space is big and steel tower construction cost is high.
The present invention is to solve the above technical problem by the following technical programs:
A kind of 500 kilovolts of single time electric power pylons, including wine cup shape steel tower tower body and rabbit capitiform steel tower tower window, in rabbit capitiform steel tower tower
The middle phase insulator chain of V-shaped laying is provided in window, on a left side for wine cup shape steel tower tower body and rabbit capitiform steel tower tower window junction
Left side phase insulated compound cross-arm is fixedly installed on lateral surface, in the junction of wine cup shape steel tower tower body and rabbit capitiform steel tower tower window
Right lateral surface on be fixedly installed the right phase insulated compound cross-arm, left side phase insulated compound cross-arm and the right phase insulated compound are horizontal
Load is, the knot of left side phase insulated compound cross-arm and the right phase insulated compound cross-arm symmetrically arranged as symmetry axis using steel tower central axes
Structure is identical;Side phase insulated compound cross-arm is to form stable triangle planform with wine cup shape steel tower.
The structure of side phase insulated compound cross-arm is:It is hanged respectively on the lateral surface that the top of wine cup shape steel tower tower body becomes at slope
Insulated compound front overhang armed lever and insulated compound rear overhang armed lever are chosen, after the outboard end of insulated compound front overhang armed lever and insulated compound
Be connected with compound cross arm end node metal cylinder between the outboard end of cantilever lever, insulated compound front overhang armed lever with after insulated compound
Cantilever lever is V-shaped setting;It is respectively arranged with insulated compound front tension bar on the lower bent lever lateral surface of rabbit capitiform steel tower tower window
With insulated compound back stay, the outboard end of insulated compound front tension bar and the outboard end of insulated compound back stay with compound cross-arm-end
Portion's node metal cylinder links together.
The outboard end of insulated compound front overhang armed lever is by cross connecting plate and compound cross arm end node metal cylinder
Medial surface be fixed together;It is fixedly installed on the upper end lateral surface of compound cross arm end node metal cylinder
Pulling plate, outboard end and the upper arm-tie fixation of insulated compound front tension bar socket together;In compound cross arm end node metal cylinder
Lower end outside face on be fixedly installed trunnion hanging panel seat.
It is connected with trunnion hanging panel on trunnion hanging panel seat, link on U-shaped is mounted in the lower end of trunnion hanging panel, on U-shaped
Link under U-shaped is mounted in link, the lower end of link is mounted with adjustment platform sling under U-shaped, is connected in the lower end of adjustment platform sling
I-shaped connecting plate is both provided with suspension clamp on four avris ends of I-shaped connecting plate, is set in the centre of I-shaped connecting plate
It is equipped with weight, aluminium armor tape is provided on suspension clamp, quadripartion power transmission line is provided in aluminium armor tape.
The compound cross-arm tower of the present invention will have significant decrease, shaft tower weight big than conventional iron tower height degree and transmission of electricity width of corridor
It is big to mitigate;Power grid security performance is effectively improved, wind is substantially cut down and puts flashover, icing falls the causality losses such as tower and maintenance cost,
Large amount of land resources are saved while project cost is greatly reduced, and realize low-carbon economy development.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention;
Fig. 2 is the dimensional structure diagram of the compound cross-arm of the present invention;
Fig. 3 is the structural schematic diagram of the compound cross arm end node of the present invention;
Fig. 4 is structural schematic diagram of the present invention in positive apparent direction;
Fig. 5 is structural schematic diagram of the present invention on looking up direction;
Fig. 6 is that the present invention hangs the structural schematic diagram for connecing gold utensil;
Fig. 7 is the annexation figure between the cross-arm, gold utensil and side phase line of the present invention.
Specific implementation mode
The present invention is described in detail below in conjunction with the accompanying drawings:
A kind of 500 kilovolts of single time electric power pylons, including wine cup shape steel tower tower body 11 and rabbit capitiform steel tower tower window 12, in rabbit capitiform iron
The middle phase insulator chain 20 of V-shaped laying is provided in tower tower window 12, in wine cup shape steel tower tower body 11 and rabbit capitiform steel tower tower window
Left side phase insulated compound cross-arm 21 is fixedly installed on the left outside side of 12 junctions, in wine cup shape steel tower tower body 11 and rabbit capitiform
The right phase insulated compound cross-arm 22 is fixedly installed on the right lateral surface of the junction of steel tower tower window 12, left side phase insulated compound is horizontal
Load 21 is, left side phase insulated compound cross-arm symmetrically arranged as symmetry axis using steel tower central axes with the right phase insulated compound cross-arm 22
21 is identical with the structure of the right phase insulated compound cross-arm 22;Side phase insulated compound cross-arm is to form to stablize with wine cup shape steel tower
Triangular structure shape.
Overhanging has insulated compound front overhang armed lever 13 respectively on the lateral surface that the top of wine cup shape steel tower tower body 11 becomes at slope
With insulated compound rear overhang armed lever 14, in the outboard end of the outboard end and insulated compound rear overhang armed lever 14 of insulated compound front overhang armed lever 13
Between be connected with compound cross arm end node metal cylinder 10, insulated compound front overhang armed lever 13 is with insulated compound rear overhang armed lever 14
V-shaped setting;Be respectively arranged on the lower bent lever lateral surface of rabbit capitiform steel tower tower window 12 insulated compound front tension bar 15 and absolutely
The compound back stay 16 of edge, the outboard end of insulated compound front tension bar 15 and the outboard end of insulated compound back stay 16 with compound cross-arm
Endpoint node metallic cylinder 10 links together.
The outboard end of insulated compound front overhang armed lever 13 is by cross connecting plate 17 and compound cross arm end node metal
What the medial surface of cylinder 10 was fixed together;It is fixed on the upper end lateral surface of compound cross arm end node metal cylinder 10
It is provided with upper arm-tie 19, outboard end and the fixation of upper arm-tie 19 of insulated compound front tension bar 15 socket together;In compound cross-arm-end
It is fixedly installed trunnion hanging panel seat 18 on the lower end outside face of portion's node metal cylinder 10.
It is connected with trunnion hanging panel 7 on trunnion hanging panel seat 18, link 6 on U-shaped are mounted in the lower end of trunnion hanging panel 7, in U
Link 5 under U-shaped are mounted in shape in link 6, the lower end of link 5 is mounted with adjustment platform sling 4 under U-shaped, in the case where adjusting platform sling 4
End is connected with I-shaped connecting plate 1, suspension clamp 2 is both provided on four avris ends of I-shaped connecting plate 1, in I-shaped connecting plate
1 centre is provided with weight 3, and aluminium armor tape 8 is provided on suspension clamp 2, and quadripartion power transmission line is provided in aluminium armor tape 8
9。
Side phase cross-arm controls transmission line of electricity distance to the ground, and hardware string of the invention is only 1.2 meters long, effectively reduces bar
Tower exhales title height;Same voltage class, when according to cup tower or cat tower, suspension insulator string length is more than 6 meters, according to this hair
When bright compound cross-arm steel tower, pendency string length is only 1.25 meters, greatly reduces steel tower and exhales height.The compound cross-arm steel tower of the present invention
When exhaling a height of 42 meters, and exhaling for cup tower or cat tower high be at least 46 meters and exhale height.
Since steel tower both sides mutually move down, when using compound cross-arm tower scheme, cross-arm width is 15.8 meters, than wineglass tower cross-arm
25.6 meters of width reduces about 10 meters, and corridor, economic benefit can be greatlyd save using the present invention in the transmission of electricity crowded area in corridor
Especially significantly.The compound cross-arm tower of the present invention substantially overcomes the windage yaw of side phase insulator chain, therefore excellent in terms of conducting wire windage yaw
Gesture is notable, can be used cooperatively with high tower under equal conditions.Compared with traditional steel tower, tower line corridor of the invention can be reduced
About one third can largely economize the land resource;It is non-renewable resources since traditional steel tower raw material are iron ore.It is multiple
It closes cross-arm novel tower major part raw material and is changed to silica ore, Chinese reserves are extremely more, are more advantageous to and utilize domestic resource.
The present invention relates to a kind of middle phases, and conventional, side mutually uses the compound cross-arm tower of 500 kilovolts of rabbit head dummys of compound cross-arm, middle phase
It connects and still uses traditional composite insulator string V serial type formulas, 103 ° of angle between two insulator chains takes full advantage of cup type tower
The strong advantage of the inclined ability of V-type insulator chain conducting wire wind resistance, cooperation both sides mutually use compound cross-arm, shaft tower integrally conducting wire to be allowed to have
The inclined ability of larger wind resistance.Both sides mutually use compound cross-arm tension and compression structure, are two insulated compound back stays, top point above
It is not fixed on steel tower neck position position, its underpart is fixed on using connection structure 5 at conducting wire gold utensil hanging wire.Support element also uses
Insulated compound rear overhang armed lever two, does pressure-bearing design, and stress overhangs obliquely, and lower end is fixed on tower body, thereon end
Power is passed at conducting wire hardware string hanging point using connector.Gold utensil is by the pulling force of two pull rods and supporting for two compression bars, shape
At fixed structure, the vertical load and horizontal loading of conducting wire are born.This invention simplifies endpoint node constructions, due to no centre
Metal connecting node, insulated lengths are longer, and cross-arm is relatively short.Present invention employs the modes that cross-arm upwarps, and stability is more preferable,
Tower height can be reduced, transmission of electricity width of corridor is further reduced under the premise of ensureing insulated lengths.
Claims (4)
1. a kind of 500 kilovolts of single time electric power pylons, including wine cup shape steel tower tower body(11)With rabbit capitiform steel tower tower window(12), in rabbit
Capitiform steel tower tower window(12)In be provided with V-shaped laying middle phase insulator chain(20), which is characterized in that in wine cup shape steel tower tower
Body(11)With rabbit capitiform steel tower tower window(12)Left side phase insulated compound cross-arm is fixedly installed on the left outside side of junction(21),
In wine cup shape steel tower tower body(11)With rabbit capitiform steel tower tower window(12)Junction right lateral surface on be fixedly installed the right phase
Insulated compound cross-arm(22), left side phase insulated compound cross-arm(21)With the right phase insulated compound cross-arm(22)It is with steel tower central axes
It is symmetrically arranged for symmetry axis, left side phase insulated compound cross-arm(21)With the right phase insulated compound cross-arm(22)The complete phase of structure
Together;Side phase insulated compound cross-arm is to form stable triangle planform with wine cup shape steel tower.
2. a kind of 500 kilovolts of single time electric power pylons according to claim 1, which is characterized in that side phase insulated compound cross-arm
Structure be:In wine cup shape steel tower tower body(11)Top become slope at right lateral surface on respectively overhanging have insulated compound front boom
Bar(13)With insulated compound rear overhang armed lever(14), in insulated compound front overhang armed lever(13)Outboard end and insulated compound rear overhang armed lever
(14)Outboard end between be connected with compound cross arm end node metal cylinder(10), insulated compound front overhang armed lever(13)With insulation
Compound rear overhang armed lever(14)It is V-shaped setting;In rabbit capitiform steel tower tower window(12)The right lateral surface of lower bent lever on be respectively set
There is insulated compound front tension bar(15)With insulated compound back stay(16), insulated compound front tension bar(15)Outboard end and insulated compound
Back stay(16)Outboard end with compound cross arm end node metal cylinder(10)It links together.
3. a kind of 500 kilovolts of single time electric power pylons according to claim 2, which is characterized in that insulated compound front overhang armed lever
(13)Outboard end be by cross connecting plate(17)With compound cross arm end node metal cylinder(10)Medial surface fix
It links together;In compound cross arm end node metal cylinder(10)Inner top side be fixedly installed upper arm-tie(16), absolutely
The compound front tension bar of edge(15)Outboard end and upper arm-tie(19)Fixation sockets together;In compound cross arm end node metal cylinder
(10)Lower end outside face on be fixedly installed trunnion hanging panel seat(18).
4. a kind of 500 kilovolts of single time electric power pylons according to claim 3, which is characterized in that in trunnion hanging panel seat(18)
On be connected with trunnion hanging panel(7), in trunnion hanging panel(7)Lower end be mounted with link on U-shaped(6), the link on U-shaped(6)Middle extension
It is connected to link under U-shaped(5), the link under U-shaped(5)Lower end be mounted with adjustment platform sling(4), in adjustment platform sling(4)Lower end connect
It is connected to I-shaped connecting plate(1), in I-shaped connecting plate(1)Four avris ends on be both provided with suspension clamp(2), in I-shaped company
Plate(1)Centre be provided with weight(3), in suspension clamp(2)On be provided with aluminium armor tape(8), in aluminium armor tape(8)In be provided with
Quadripartion power transmission line(9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810809349.8A CN108691450A (en) | 2018-07-23 | 2018-07-23 | A kind of 500 kilovolts of single time electric power pylons |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810809349.8A CN108691450A (en) | 2018-07-23 | 2018-07-23 | A kind of 500 kilovolts of single time electric power pylons |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108691450A true CN108691450A (en) | 2018-10-23 |
Family
ID=63850822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810809349.8A Pending CN108691450A (en) | 2018-07-23 | 2018-07-23 | A kind of 500 kilovolts of single time electric power pylons |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108691450A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458034A (en) * | 2018-12-21 | 2019-03-12 | 江苏神马电力股份有限公司 | A kind of power transmission tower |
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| CN103122723A (en) * | 2013-01-31 | 2013-05-29 | 中国电力工程顾问集团西北电力设计院 | Novel wine glass composite material tower |
| CN203260430U (en) * | 2013-04-18 | 2013-10-30 | 中国电力工程顾问集团中南电力设计院 | Suspension insulator string applicable to large height difference |
| CN104376935A (en) * | 2014-11-20 | 2015-02-25 | 国家电网公司 | Compact type dual-connection V-shaped suspension string for light-ice area |
| CN205918210U (en) * | 2016-08-29 | 2017-02-01 | 江西省电力设计院 | A compound cross arm tangent tower of cat head type for reducing line corridor width |
| CN107587775A (en) * | 2017-10-18 | 2018-01-16 | 江苏神马电力股份有限公司 | Power transmission tower |
| CN208950427U (en) * | 2018-07-23 | 2019-06-07 | 中国能源建设集团山西省电力勘测设计院有限公司 | A kind of 500 kilovolts of single time electric power pylons |
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2018
- 2018-07-23 CN CN201810809349.8A patent/CN108691450A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202711880U (en) * | 2012-07-31 | 2013-01-30 | 中国南方电网有限责任公司超高压输电公司 | Singly connected V-shaped composite insulator string for +/-500 kV double-circuit lines on same tower |
| CN103122723A (en) * | 2013-01-31 | 2013-05-29 | 中国电力工程顾问集团西北电力设计院 | Novel wine glass composite material tower |
| CN203260430U (en) * | 2013-04-18 | 2013-10-30 | 中国电力工程顾问集团中南电力设计院 | Suspension insulator string applicable to large height difference |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109458034A (en) * | 2018-12-21 | 2019-03-12 | 江苏神马电力股份有限公司 | A kind of power transmission tower |
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