CN205713387U - A kind of four return cable terminal towers - Google Patents
A kind of four return cable terminal towers Download PDFInfo
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- CN205713387U CN205713387U CN201620349292.4U CN201620349292U CN205713387U CN 205713387 U CN205713387 U CN 205713387U CN 201620349292 U CN201620349292 U CN 201620349292U CN 205713387 U CN205713387 U CN 205713387U
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Abstract
This utility model belongs to power transmission technical field, discloses a kind of four return cable terminal towers.This four return cable terminal tower includes tower body, described tower body top is sequentially provided with a cross-arm, upper two cross-arms, upper three cross-arms and upper four cross-arms from top to bottom, the two ends of upper two cross-arms, upper three cross-arms and upper four cross-arms are designed with connecting end and the spark gap of a phase line, tower body bottom is sequentially provided with next cross-arm, lower two cross-arms, lower three cross-arms and lower four cross-arms from top to bottom, the both sides end points of next cross-arm and lower four cross-arms is connected with wire, and that descends four cross-arms is respectively provided on two sides with one group for the end and the spark gap that connect a loop line road.This utility model four return cable terminal tower can save column foot quantity, and floor space is little；Use the new mode of connection on terminal tower, it is not necessary to support insulator, and wiring becomes apparent from；Increase electric clearance, facilitate the operation and maintenance of terminal tower.
Description
Technical field
This utility model relates to power transmission technical field, particularly relates to a kind of four return cable terminal towers.
Background technology
Along with economic fast development, urban construction and modernization of business degree improve, the electric power as economic lifeline encounters unprecedented challenge.In order to meet power demands, in the electrical network of each big city, the proportion shared by power cable is increasing.It addition, put more effort with urban construction, land development, high tension cable the most progressively gos deep into urban district, and in urban district, the high voltage overhead lines of present situation the most progressively implements cabling reconstructing.But limited by railway network planning and topography and geomorphology, in the case of cannot implementing pure cable run, it is necessarily required to the switching using cable termination tower and terminal station to realize overhead transmission line and cable run.Cable terminal station is big due to floor space, is used in 220kV and above overhead transmission line, and with transferring of cable run, 110kV and following overhead transmission line are used the forms of cable termination tower more.
Through development for many years, single loop, double loop cable termination tower have evolved into ripe, and use more.Under four conventional loop aerial lines time, two base double-loop terminal towers need to be used to realize the switching of aerial line and cable, though this mode achieves the function on ground under four times overhead transmission lines, but there is multinomial shortcoming: (1) two base double-loop terminal tower, floor space is much larger than a base four return cable terminal tower (in addition to tower position is taken up an area, owing to needing to keep certain distance between two base terminal towers, also relating to the occupation of land in high pressure corridor, total floor space is at least more than 8 times of four loop terminal towers)；The steel consumption of (2) two base steel towers is relatively big, 1.3 times of about one base four loop tower；(3) electrical wiring is unintelligible, uses a large amount of support insulator, to ensure electric clearance；The more difficult control of electrical distance when (4) four loops turn double loop, between different circuit；(5) live part is less with the gap of tower body, is unfavorable for livewire work.
Utility model content
Technical problem to be solved in the utility model, is to provide that a kind of floor space is little, steel consumption is low, without support insulator and the four return cable terminal towers that can guarantee that electric clearance.
This utility model solves above-mentioned technical problem and be the technical scheme is that
This utility model provides a kind of four return cable terminal towers, it includes tower body, described tower body top is sequentially provided with a cross-arm from top to bottom, upper two cross-arms, upper three cross-arms and upper four cross-arms, described upper two cross-arms, the two ends of upper three cross-arms and upper four cross-arms are designed with connecting end and the spark gap of a phase line, described tower body bottom is sequentially provided with next cross-arm from top to bottom, lower two cross-arms, lower three cross-arms and lower four cross-arms, the both sides end points of next cross-arm described and lower four cross-arms is connected with wire, under described, four cross-arms is respectively provided on two sides with one group for the end and the spark gap that connect a loop line road.
As the further improvement of technique scheme, on described upper two cross-arms, upper three cross-arms and upper four cross-arms, end is all located at the cross-arm side away from aerial line, and the cross-arm side near aerial line is the most all located at by spark gap.
As the further improvement of technique scheme, the end on described lower four cross-arms is located between described wire and tower body, and spark gap is located between described end and wire.
As the further improvement of technique scheme, described wire is connected with next cross-arm described and lower four cross-arms by strain insulator-string.
As the further improvement of technique scheme, described upper two cross-arms, upper three cross-arms, upper four cross-arms and lower four cross-arms are all equipped with antiskid plate.
As the further improvement of technique scheme, described tower body is installed with cat ladder in the side hanging with aerial line.
As the further improvement of technique scheme, the top cross-arm being also arranged above for setting up lightning conducter of a described upper cross-arm.
As the further improvement of technique scheme, between the end base on described lower four cross-arms, NULL is used completely to spread.
The beneficial effects of the utility model are:
This utility model four return cable terminal tower can solve the problem that conventional four times overhead transmission lines cannot use a Ji Ta to realize built on stilts, the problem of cable run switching, saves column foot quantity, and floor space is little, steel consumption is little；Use the new mode of connection on terminal tower, it is not necessary to support insulator, and wiring becomes apparent from；Increase electric clearance, facilitate the operation and maintenance of terminal tower.
Accompanying drawing explanation
Fig. 1 is the front view of this utility model four return cable terminal tower；
Fig. 2 is the side view of this utility model four return cable terminal tower；
Fig. 3 is the end on upper two cross-arms of this utility model four return cable terminal tower or upper three cross-arms or upper four cross-arms and location layout's figure of spark gap.
Detailed description of the invention
Below with reference to embodiment and accompanying drawing, the technique effect of design of the present utility model, concrete structure and generation is clearly and completely described, to be completely understood by the purpose of this utility model, feature and effect.Obviously; described embodiment is a part of embodiment of the present utility model rather than whole embodiment, based on embodiment of the present utility model; other embodiments that those skilled in the art is obtained on the premise of not paying creative work, belong to the scope of this utility model protection.It addition, all connection/annexations related in patent, the most singly refer to that component directly connects, and refer to couple auxiliary according to being embodied as situation by adding or reducing, form more excellent draw bail.Each technical characteristic in this utility model, can be with combination of interactions on the premise of the most conflicting conflict.
Please with reference to Fig. 1 to Fig. 3, this utility model four return cable terminal tower includes tower body 1, and the top of tower body 1 is provided with double loop, bottom is provided with lower double loop.
Upper double-circuit line is provided with four layers of cross-arm altogether, it is followed successively by a cross-arm 21, upper two cross-arms 22, upper three cross-arms 23 and upper four cross-arms 24 from top to bottom, wherein go up a cross-arm 21 only hanger ceases to be busy 9, not installing end 6 and spark gap 7, upper four cross-arms 24 the most only install end 6 and spark gap 7 and not hanger ceases to be busy 9.
The two ends of upper two cross-arms 22, upper three cross-arms 23 and upper four cross-arms 24 are designed with connecting the end 6 of a phase line and spark gap 7, and the these three cross-arm upper surface installing end 6 and spark gap 7 is plane, form inspection platform, platform completely spreads antiskid plate, facilitates O&M to overhaul.
Lower double loop also is provided with four layers of cross-arm, it is followed successively by next cross-arm 31, lower two cross-arms 32, lower three cross-arms 33 and lower four cross-arms 34 from top to bottom, the both sides end points of next cross-arm 31 and lower four cross-arms 34 is connected with 3 wires 5, that descends four cross-arms 34 is respectively provided on two sides with one group for the end 6 and the spark gap 7 that connect a loop line road, in this embodiment, the both sides of lower four cross-arms 34 are all respectively equipped with 3 ends 6 and 3 spark gaps 7.
Upper double-circuit line land cable draws from the side of tower body 1 non-hanger ceases to be busy, and on upper two cross-arms 22, upper three cross-arms 23 and upper four cross-arms 24, end 6 is all located at the cross-arm side away from aerial line 9, and the cross-arm side near aerial line 9 is the most all located at by spark gap 7.Specifically, end 6, spark gap 7 are installed on the dual-side of three cross-arms, and spacing is cross-arm width, about 2.1m, and end 6, spark gap 7 then remain about 2.6m with the distance of tower body 1.
Lower double-circuit line draws from the dual-side of tower body 1, and the end 6 on lower double-circuit line every loop line road, spark gap 7 is all arranged on same cross-arm platform (namely lower four cross-arms 34), end 6 is located between wire 5 and tower body 1, spark gap 7 is located between end 6 and wire 5, it is spaced about 1.5m between end 6, it is spaced about 1.2m between end 6 and spark gap 7, wire 5 uses common strain insulator-string 51 directly to draw the termination down to lower four cross-arms 34 from next cross-arm 31, again from side jumper connection to end 6 and spark gap 7, without support insulator, wiring is clear, live part is big with tower body 1 gap；All be equivalent to decrease trouble point without support insulator and minimizing base.Wire 5 draw under time, closest approach also greater than 4m, compares the 1.2m under former support insulator draws away from tower body 1 distance, and significantly lifting lead wire is conducive to livewire work with the distance of tower body.
Lower four cross-arms 34 are also equipped with the antiskid plate being easy to O&M maintenance, and use NULL completely to spread between three-phase electricity cable end base, are prevented effectively from metal circulation.
Tower body 1 is installed with cat ladder 8 in the side hanging with aerial line 9, and each functional areas are arranged apart, rational in infrastructure.
The top cross-arm 4 being arranged over for setting up lightning conducter of a upper cross-arm 21.
It is above preferred embodiment of the present utility model is illustrated, but this utility model is not limited to described embodiment, those of ordinary skill in the art it may also be made that all equivalent variations or replacement on the premise of this utility model spirit, and deformation or the replacement of these equivalents are all contained in the application claim limited range.
Claims (8)
1. a return cable terminal tower, it is characterized in that: include tower body, described tower body top is sequentially provided with a cross-arm from top to bottom, upper two cross-arms, upper three cross-arms and upper four cross-arms, described upper two cross-arms, the two ends of upper three cross-arms and upper four cross-arms are designed with connecting end and the spark gap of a phase line, described tower body bottom is sequentially provided with next cross-arm from top to bottom, lower two cross-arms, lower three cross-arms and lower four cross-arms, the both sides end points of next cross-arm described and lower four cross-arms is connected with wire, under described, four cross-arms is respectively provided on two sides with one group for the end and the spark gap that connect a loop line road.
Four return cable terminal towers the most as claimed in claim 1, it is characterised in that: on described upper two cross-arms, upper three cross-arms and upper four cross-arms, end is all located at the cross-arm side away from aerial line, and the cross-arm side near aerial line is the most all located at by spark gap.
Four return cable terminal towers the most as claimed in claim 1, it is characterised in that: the end on described lower four cross-arms is located between described wire and tower body, and spark gap is located between described end and wire.
4. four return cable terminal towers as described in any one of claims 1 to 3, it is characterised in that: described wire is connected with next cross-arm described and lower four cross-arms by strain insulator-string.
5. four return cable terminal towers as described in any one of claims 1 to 3, it is characterised in that: described upper two cross-arms, upper three cross-arms, upper four cross-arms and lower four cross-arms are all equipped with antiskid plate.
6. four return cable terminal towers as described in any one of claims 1 to 3, it is characterised in that: described tower body is installed with cat ladder in the side hanging with aerial line.
7. four return cable terminal towers as described in any one of claims 1 to 3, it is characterised in that: the top cross-arm being also arranged above for setting up lightning conducter of a described upper cross-arm.
8. four return cable terminal towers as described in any one of claims 1 to 3, it is characterised in that: use NULL completely to spread between the end base on described lower four cross-arms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620349292.4U CN205713387U (en) | 2016-04-22 | 2016-04-22 | A kind of four return cable terminal towers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620349292.4U CN205713387U (en) | 2016-04-22 | 2016-04-22 | A kind of four return cable terminal towers |
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| Publication Number | Publication Date |
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| CN205713387U true CN205713387U (en) | 2016-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620349292.4U Active CN205713387U (en) | 2016-04-22 | 2016-04-22 | A kind of four return cable terminal towers |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108418167A (en) * | 2018-05-18 | 2018-08-17 | 青岛市恒顺众昇集团股份有限公司 | With four circuit single wire cable terminal tower of tower |
-
2016
- 2016-04-22 CN CN201620349292.4U patent/CN205713387U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108418167A (en) * | 2018-05-18 | 2018-08-17 | 青岛市恒顺众昇集团股份有限公司 | With four circuit single wire cable terminal tower of tower |
| CN108418167B (en) * | 2018-05-18 | 2023-12-05 | 青岛中资中程集团股份有限公司 | Same-tower four-loop single-wire cable terminal tower |
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