CN107700926A - A kind of double loop cable termination tower - Google Patents
A kind of double loop cable termination tower Download PDFInfo
- Publication number
- CN107700926A CN107700926A CN201710909630.4A CN201710909630A CN107700926A CN 107700926 A CN107700926 A CN 107700926A CN 201710909630 A CN201710909630 A CN 201710909630A CN 107700926 A CN107700926 A CN 107700926A
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- China
- Prior art keywords
- arm
- cross
- cable termination
- double loop
- phase cross
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012212 insulator Substances 0.000 claims description 14
- 239000002131 composite material Substances 0.000 claims description 6
- 239000012211 strain insulator Substances 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 3
- 230000009467 reduction Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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
- E04H12/24—Cross arms
-
- 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
- E04H12/22—Sockets or holders for poles or posts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The present invention relates to a kind of double loop cable termination tower, the cable termination tower includes tower body support, described tower body support sets gradually phase cross-arm, middle phase cross-arm and lower wire cross-arm from top to bottom, described upper phase cross-arm is T-shaped cross-arm, described middle phase cross-arm both sides are respectively equipped with extension, are respectively equipped with wire with middle phase cross-arm extension at described T-shaped cross-arm and draw lower hanging point device.Compared with prior art, the influence of the invention that there is reduction cable termination tower to surrounding environment, simple for structure and saving space.
Description
Technical field
The present invention relates to cable termination tower, more particularly, to a kind of double loop cable termination tower.
Background technology
The characteristics of studying domestic and international Electric Power Network Planning and trend, constantly expand with the rapid development city size of China's economy
Greatly, power consumption is growing day by day, and land resource but be becoming tight by day when power network constantly expands, especially in big and medium-sized cities land expropriation cost
More and more higher, while requirement of the people to environment also improves constantly.Cable has power supply reliable compared with conventional overhead transmission line
Property it is high, wiring is not influenceed by ground space building, is advantageous to beautifying city and optimization factories and miness layout and the electricity to environment
Magnetic disturbance very little, maintenance cost smaller many advantages, such as safer to the person, therefore obtain extensive popularization and application.
But due to consideration that cable investment volume is relatively large, high is required to Underground Space Resource, therefore at present in power grid construction
Cable does not substitute overhead transmission line completely yet, and some circuits consider cost issues still member-retaining portion overhead line when being transformed into cable
Road.In summary reason, cable aerial mixed line is also increasing in urban distribution network, and in the friendship of overhead line and cable run
Boundary's point is, it is necessary to there is corresponding electrical equipment to connect.Cable termination tower is built in city simultaneously need to consider environmental factor etc.
Problem.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of double loop cable is whole
Head tower.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of double loop cable termination tower, the cable termination tower include tower body support, and described tower body support is from top to bottom
Phase cross-arm, middle phase cross-arm and lower wire cross-arm are set gradually, described upper phase cross-arm is horizontally disposed T-shaped cross-arm, described
Middle phase cross-arm both sides be respectively equipped with extension, described middle phase cross-arm extension and T-shaped cross-arm are respectively equipped with wire and draw lower extension
Point.
Preferably, described lower wire cross-arm sets cable platform, and described cable platform is surrounded by protection fence, institute
Supporting insulator, arrester and outdoor terminal are installed on the cable platform stated.
Preferably, it is arranged composite bushing outside described supporting insulator, arrester and outdoor terminal.
Preferably, strain insulator is set respectively on described upper phase cross-arm, middle phase cross-arm and lower wire cross-arm, it is described
Strain insulator is connected with wire.
Preferably, it is sequentially connected between described upper phase cross-arm and middle phase cross-arm between middle phase cross-arm and lower wire cross-arm
There is suspension type lightning rod.
Preferably, described middle phase cross-arm both ends are respectively arranged with corner bracket in the same side.
Preferably, the bottom stabilizing device of described tower body support uses single pile bored concrete pile.
Preferably, described tower body support surrounding sets foot lever.
Compared with prior art, the present invention has advantages below：
1st, influence of the cable termination tower to surrounding environment is reduced：T-shaped cross-arm is added to realize three-phase independent grounding, it is simple in construction,
Small volume, draw under type facility, easy to implement, strain insulator insulation reduction supporting construction, supporting insulator, arrester on wire cross-arm
Composite bushing is arranged outside with outdoor terminal, effectively reduces electrical equipment malfunction to caused influence around；
2nd, it is simple for structure, save space：Middle phase cross-arm both ends are respectively arranged with corner bracket in the same side, effectively reduce support knot
Structure, suitable for the region that land area is nervous；
3rd, cable platform is surrounded by protection fence：Prevent surrounding environment from being had an impact to tower body support；
4th, steel tower overall height is reduced, reduces floor space, applicability is improved, reduces the requirement to target line.
Brief description of the drawings
Fig. 1 is the three-dimensional line chart of the present invention；
Fig. 2 is front view of the present invention；
Fig. 3 is invention side view.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is the part of the embodiment of the present invention, rather than whole embodiments.Based on this hair
Embodiment in bright, the every other reality that those of ordinary skill in the art are obtained on the premise of creative work is not made
Example is applied, should all belong to the scope of protection of the invention.
Embodiment
220kV double-loop terminal towers, it is to realize that 220kV overhead transmission lines switch to a kind of special shaft tower of cable run.Terminal
Tower is broadly divided into 5 parts, i.e.,：Tower head form, wire draw lower form, terminal platform, cable bearer system and cable laying with
It is fixed.
On tower head, 220kV terminal towers must are fulfilled for electric clearance requirement of the 220kV overhead transmission lines to tower head, and lead
Ground wire spacing meets the requirement of lightning protection.On this basis, the change in structure can be done.Based on 220kV double loops tower head
Improved based on common 220kV double loops anchor support, wherein on mutually carry the newly-built T in line side and connect cross-arm, the jump as upper phase
Line hanging point position；Middle phase cross-arm outwards chooses lengthening, as hanging point under the drawing of middle wire；Lower wire cross-arm does not process.
A kind of double loop cable termination tower, as shown in Figure 1, Figure 2 and Figure 3, concrete structure are that the cable termination tower includes tower
Body support, tower body support set gradually phase cross-arm, middle phase cross-arm and lower wire cross-arm from top to bottom, and upper phase cross-arm is T-shaped horizontal stroke
Load, middle phase cross-arm both sides are respectively equipped with extension, are respectively equipped with wire with middle phase cross-arm extension at T-shaped cross-arm and draw lower hanging point dress
Put.Cable platform is set at lower wire cross-arm, and cable platform is surrounded by protection fence, supports insulative is installed on cable platform
Son, arrester and outdoor terminal.Composite bushing is arranged outside supporting insulator, arrester and outdoor terminal.Upper phase cross-arm, middle phase are horizontal
Strain insulator is set respectively on load and lower wire cross-arm.It is horizontal with middle phase cross-arm and lower wire between upper phase cross-arm and middle phase cross-arm
It is connected with suspension type lightning rod between load in turn.Middle phase cross-arm both ends are respectively arranged with corner bracket in the same side.The bottom of tower body support
Securing device uses single pile bored concrete pile.Tower body support surrounding sets foot lever.
In terms of wire draws lower form, analysis system capacity is first had to, rationally coordinates cable to cut on the basis of capacity is met
The selection in face.Such as circuit distant view considers cutover, using 2 × JL/LB1A-630/45, if system maximum capacity only 300MVA, electricity
Cable uses 1 × 1000mm2It can meet to require, therefore the wire under drawing uses single 630/45.It is divided under the drawing of wire straight
Connect and draw following formula, and draw following formula indirectly.Wire is fixed double bundle conductor using JB-6 parallel groove clamps, to reduce double bundle conductor
Equivalent redius, on the basis of tower head is not increased, draw lower form, fully increase the distance between phase-phase, phase-ground.
Terminal platform is that cable platform is the carrier that overhead line turns cable, is required of carrying in stress first, next to that
The position of equipment determines the size of platform, is the cable laying of height decision and the difficulty of later stage O＆M of platform again
Degree.Platform is arranged symmetrically, and arrester, composite insulator, outdoor terminal are outwards sequentially arranged from tower body.
Cable bearer system is realization and the carrier for improving cable running safety.The steadiness of mounting system also determines electricity
The stressing conditions of the junction of cable and terminal.Cable laying and fixation are realized based on mounting system, and the difficulty of laying depends on
The position of height, support (cross-arm) in platform.Cable bearer uses " gigantic ", rectilinear cable bearer system
System, support are used isolated footing, fixed between support using 2~3 grades of cross-arms, with fully firm cable bearer, to prevent independence
The differential settlement of support causes the electrical barrier of outdoor terminal and cable connection face.
In 220kV terminal towers two equipment platforms being arranged symmetrically are set away from ground about at 9m, aerial, electricity is arranged on platform
The electrical equipment (supporting insulator, arrester, outdoor terminal etc.) of cable conversion and reserved experiment perforate.Upper phase conductor passes through branch
Connect cross-arm to circuit reversely to choose, wire, to drawing, will be led by the supporting insulator on insulator and platform by T-shaped wire clamp
Line T is connected on outdoor terminal and arrester；Middle phase cross-arm lengthens to crosspiece direction, and wire passes through the support on insulator and platform
Wire is connected on outdoor terminal and arrester by insulator to drawing by T-shaped wire clamp；Lower phase conductor cross-arm length meets will
Ask, wire is connected to outdoor terminal and kept away by wire by the supporting insulator on insulator and platform to drawing, then by T-shaped wire clamp
On thunder device, so realize that three-phase conducting wire is converted into cable run.
On this basis, the electrical equipment on terminal tower uses composite bushing material, fully ensures the safety of equipment, and
Influence of the equipment to surrounding environment is reduced to minimum.
Terminal tower periphery is surrounded with hollow out fence, and the technical precaution facilities such as electric fence are installed on fence, fully ensure terminal tower
Safety and reliability.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, various equivalent modifications can be readily occurred in or replaced
Change, these modifications or substitutions should be all included within the scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection domain be defined.
Claims (8)
1. a kind of double loop cable termination tower, it is characterised in that the cable termination tower includes tower body support, described tower body support
Phase cross-arm, middle phase cross-arm and lower wire cross-arm are set gradually from top to bottom, and described upper phase cross-arm is horizontally disposed T-shaped horizontal stroke
Load, described middle phase cross-arm both sides are respectively equipped with extension, and described middle phase cross-arm extension and T-shaped cross-arm are respectively equipped with wire
Draw lower hanging point.
2. a kind of double loop cable termination tower according to claim 1, it is characterised in that described lower wire cross-arm is set
Cable platform, described cable platform are surrounded by protection fence, supporting insulator, arrester are installed on described cable platform
And outdoor terminal.
3. a kind of double loop cable termination tower according to claim 2, it is characterised in that described supporting insulator, keep away
Composite bushing is arranged outside thunder device and outdoor terminal.
4. a kind of double loop cable termination tower according to claim 1, it is characterised in that described upper phase cross-arm, middle phase
Strain insulator is set respectively on cross-arm and lower wire cross-arm, and described strain insulator is connected with wire.
5. a kind of double loop cable termination tower according to claim 1, it is characterised in that described upper phase cross-arm and middle phase
Between cross-arm suspension type lightning rod is connected with turn between middle phase cross-arm and lower wire cross-arm.
6. a kind of double loop cable termination tower according to claim 1, it is characterised in that described middle phase cross-arm both ends exist
The same side is respectively arranged with corner bracket.
A kind of 7. double loop cable termination tower according to claim 1, it is characterised in that the bottom of described tower body support
Securing device uses single pile bored concrete pile.
8. a kind of double loop cable termination tower according to claim 1, it is characterised in that described tower body support surrounding is set
Put foot lever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710909630.4A CN107700926A (en) | 2017-09-29 | 2017-09-29 | A kind of double loop cable termination tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710909630.4A CN107700926A (en) | 2017-09-29 | 2017-09-29 | A kind of double loop cable termination tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107700926A true CN107700926A (en) | 2018-02-16 |
Family
ID=61175839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710909630.4A Pending CN107700926A (en) | 2017-09-29 | 2017-09-29 | A kind of double loop cable termination tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107700926A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108756428A (en) * | 2018-06-14 | 2018-11-06 | 国网安徽省电力有限公司经济技术研究院 | It is a kind of to be used to make somebody a mere figurehead the bearing platform type narrow base tower under double-circuit line cable T joint draws |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203412348U (en) * | 2013-08-06 | 2014-01-29 | 安徽华电工程咨询设计有限公司 | Double-circuit single circuit cutoff power transmission steel pipe pole in Y-shaped cross arm arrangement |
| CN205206450U (en) * | 2015-12-03 | 2016-05-04 | 沈阳电力勘测设计院 | From two loop cable dead end towers of taking alarm device |
| CN206016402U (en) * | 2016-08-31 | 2017-03-15 | 中国能源建设集团天津电力设计院有限公司 | Tape cable platform directly draws following formula double back cable terminal steel pipe pole |
| CN206016391U (en) * | 2016-08-26 | 2017-03-15 | 江西省电力设计院 | A kind of double loop cydariform cable termination tower that is maked somebody a mere figurehead based on drain bus under drawing |
| CN206128808U (en) * | 2016-09-26 | 2017-04-26 | 安徽华电工程咨询设计有限公司 | Novel single loop cable dead end tower |
| CN207260730U (en) * | 2017-09-29 | 2018-04-20 | 国网上海市电力公司 | A kind of double loop cable termination tower |
-
2017
- 2017-09-29 CN CN201710909630.4A patent/CN107700926A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203412348U (en) * | 2013-08-06 | 2014-01-29 | 安徽华电工程咨询设计有限公司 | Double-circuit single circuit cutoff power transmission steel pipe pole in Y-shaped cross arm arrangement |
| CN205206450U (en) * | 2015-12-03 | 2016-05-04 | 沈阳电力勘测设计院 | From two loop cable dead end towers of taking alarm device |
| CN206016391U (en) * | 2016-08-26 | 2017-03-15 | 江西省电力设计院 | A kind of double loop cydariform cable termination tower that is maked somebody a mere figurehead based on drain bus under drawing |
| CN206016402U (en) * | 2016-08-31 | 2017-03-15 | 中国能源建设集团天津电力设计院有限公司 | Tape cable platform directly draws following formula double back cable terminal steel pipe pole |
| CN206128808U (en) * | 2016-09-26 | 2017-04-26 | 安徽华电工程咨询设计有限公司 | Novel single loop cable dead end tower |
| CN207260730U (en) * | 2017-09-29 | 2018-04-20 | 国网上海市电力公司 | A kind of double loop cable termination tower |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108756428A (en) * | 2018-06-14 | 2018-11-06 | 国网安徽省电力有限公司经济技术研究院 | It is a kind of to be used to make somebody a mere figurehead the bearing platform type narrow base tower under double-circuit line cable T joint draws |
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