CN207518244U - A kind of 220kV double backs overhead transmission line cable cut-offs bar - Google Patents
A kind of 220kV double backs overhead transmission line cable cut-offs bar Download PDFInfo
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- CN207518244U CN207518244U CN201721461952.9U CN201721461952U CN207518244U CN 207518244 U CN207518244 U CN 207518244U CN 201721461952 U CN201721461952 U CN 201721461952U CN 207518244 U CN207518244 U CN 207518244U
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Abstract
The utility model is related to a kind of 220kV double backs overhead transmission line cables to cut-off bar, and the cable for solving double back overhead transmission line compared with prior art cut-offs the defects of scheme is excessively complicated, power off time is long.The first circuit cross biling assembly of the utility model includes the terminal cross-arm installed successively from the bottom to top based on cable terminal pole, lower wire jumper cross-arm, middle wire jumper cross-arm and upper wire jumper cross-arm, the end of the terminal cross-arm is equipped with 3 cable terminations, the end of lower wire jumper cross-arm is equipped with 3 lower hardware strings, 3 lower hardware strings are arranged with lower wire jumper cross-arm in " ten " font, the end of middle wire jumper cross-arm is equipped with 2 middle strain insulator-strings, 2 middle strain insulator-strings are based on middle wire jumper cross-arm and are arranged vertically, the end of upper wire jumper cross-arm is equipped with 2 upper strain insulator-strings, 2 upper strain insulator-strings are based on wire jumper cross-arm and are arranged vertically.The utility model avoids influence caused by long-term have a power failure without founding tower under 220kV double-circuit lines to be cut-off.
Description
Technical field
The utility model is related to cable terminal pole tower technology fields, and specifically a kind of 220kV double backs overhead transmission line is electric
Cable cut-offs bar.
Background technology
In the prior art, at home in 220kV supertension lines engineering, in order to which double back overhead transmission line is opened using cable
It is disconnected, it is typically employed in the scheme of newly-built one to two base cable termination shaft tower below double-circuit line.It carries out vertical tower under needing online,
And block and lead, after ground wire wait cut-offfing circuit, on newly-built cable termination shaft tower to leading, ground wire crimped again.
It is this cut-off construction mode need undergo below circuit to be cut-off carry out foundation excavation, making, maintenance, group tower and
In the Poling Construction period, arrangement and method for construction is complicated, power off time is long, investment increases greatly.And part circuit can not because of cause specific
Long-time power failure is carried out, the stable operation of network system is impacted.
Therefore, it is directed to cable run and how quickly and easily to cut-off double back overhead transmission line and have become a needs and overcome
The technical issues of.
Utility model content
The purpose of this utility model is that cut-off scheme excessively multiple in order to solve the cable of double back overhead transmission line in the prior art
Miscellaneous, the defects of power off time is long, a kind of 220kV double backs overhead transmission line cable is provided and cut-offs bar to solve the above problems.
To achieve these goals, the technical solution of the utility model is as follows：
A kind of 220kV double backs overhead transmission line cable cut-offs bar, and including cable terminal pole, the cable terminal pole is equipped with
First circuit cross biling assembly and second servo loop cross biling assembly, both the first circuit cross biling assembly and second servo loop cross biling assembly structure
It is identical and based on cable terminal pole in mirror image correspondence, the bottom of cable terminal pole picks out the first circuit and second servo loop, first time
The first circuit of road cross biling assembly is drawn, and second servo loop is drawn through second servo loop cross biling assembly；
The first circuit cross biling assembly include the terminal cross-arm installed successively from the bottom to top based on cable terminal pole, under
Wire jumper cross-arm, middle wire jumper cross-arm and upper wire jumper cross-arm, the end of the terminal cross-arm are equipped with 3 cable terminations, and lower wire jumper is horizontal
The end of load is equipped with 3 lower hardware strings, and 3 lower hardware strings are arranged with lower wire jumper cross-arm in " ten " font, middle wire jumper cross-arm
End is equipped with 2 middle strain insulator-strings, and 2 middle strain insulator-strings are based on middle wire jumper cross-arm and are arranged vertically, the end peace of upper wire jumper cross-arm
Equipped with 2 upper strain insulator-strings, 2 upper strain insulator-strings are based on wire jumper cross-arm and are arranged vertically.
Anchor support to be cut-off is further included, anchor support to be cut-off is with cable terminal pole at a distance of 15-20m, first circuit
Three-phase introduce 3 cable terminations respectively, the conducting wire drawn from 3 cable terminations is respectively led into 3 lower hardware strings, towards waiting out
The lower hardware string of disconnected anchor support draws aerial condutor and is connected to anchor support to be cut-off, and another 2 lower hardware strings in 3 lower hardware strings draw
The conducting wire gone out is respectively led into 2 middle strain insulator-strings, is connected to towards the middle strain insulator-string extraction aerial condutor of anchor support to be cut-off and waits to cut-off
Anchor support, the conducting wire that another 1 middle strain insulator-string in 2 middle strain insulator-strings is drawn lead to strain insulator-string and through another upper strain insulator-string transition
After lead to anchor support to be cut-off.
The lower hardware string is bar type hardware string, and the middle strain insulator-string and upper strain insulator-string are bar type strain insulator-string.
The first circuit cross biling assembly further includes arrester installation cross-arm, and arrester installation cross-arm is located at terminal cross-arm
Between lower wire jumper cross-arm, the end of arrester installation cross-arm is equipped with 3 arresters and 3 lead hardware strings, 3 cable ends
The conducting wire drawn is held to lead to 3 lower hardware strings through 3 lead hardware strings respectively, 3 lead hardware strings lead to 3 lower hardware strings
Introduce 3 arresters on conducting wire respectively by wire jumper.
The aerial condutor that the lower hardware string is drawn is connected on the dish-type insulator of anchor support to be cut-off by T-shaped binding clip
On strain insulator-string, parallel groove clamp is also equipped on the aerial condutor that lower hardware string is drawn, the aerial condutor that lower hardware string is drawn passes through
On parallel groove clamp lead to the extraction wire of coupled dish-type insulator resistant string.
Advantageous effect
A kind of 220kV double backs overhead transmission line cable of the utility model cut-offs bar, compared with prior art without waiting out
Tower is found under disconnected 220kV double-circuit lines, avoids influence caused by long-term have a power failure.The utility model passes through bis- in 220kV to be cut-off
Cable terminal pole is nearby set up in loop line road, cross arm type insulator resistant string is designed on cable terminal pole, and in circuit to be cut-off
The design being connect on anchor support using T connection of conducting wire wire clamp and parallel groove clamp with conducting wire, both ensure that being reliably connected and leading for conducting wire
Fluidity energy in turn avoids conducting wire using conventional dish-type insulator resistant string connection shaft tower, and wire tension-resistant string string weight is larger caused
New route section lead overtension, the problem of beyond former overhead line structures design condition.
The utility model can use near arbitrary 220kV anchor supports, and design mistake is simple, without stopping for a long time
Electricity simplifies the arrangement and method for construction that cable cut-offs 220kV overhead transmission lines, has ensured the safe and stable operation of 220kV circuits.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is that the utility model does not install the structure diagram that arrester installs cross-arm additional；
Fig. 3 is the mounting structure schematic diagram that arrester installs cross-arm and arrester in the utility model；
Fig. 4 is the mounting structure schematic diagram of parallel groove clamp and T binding clips in the utility model；
Wherein, under 1- cable terminal poles, the first circuits of 2-, 3- second servo loops, 4- terminals cross-arm, 5- in wire jumper cross-arm, 6-
Strain insulator-string, the upper strain insulator-strings of 11-, 12- wait to cut-off in hardware string, 10- under the upper wire jumper cross-arm of wire jumper cross-arm, 7-, 8- cable terminations, 9-
Anchor support, 13- arresters installation cross-arm, 14- arresters, 15- leads hardware string, 16- dish-types insulator resistant string, 17- and ditch
Wire clamp, 18-T types binding clip, the first circuits of 19- cross biling assembly, 20- second servo loops cross biling assembly, 21- ground wires.
Specific embodiment
The effect of to make to the structure feature of the utility model and being reached, has a better understanding and awareness, to compared with
Good embodiment and attached drawing cooperation detailed description, are described as follows：
As shown in Figure 1, a kind of 220kV double backs overhead transmission line cable described in the utility model cut-offs bar, including cable end
Side pole 1.Cable terminal pole 1 is equipped with the first circuit cross biling assembly 19 and second servo loop cross biling assembly 20, the first circuit cross-arm group
Part 19 and second servo loop cross biling assembly 20 are respectively used to 220kV double loops, the first circuit cross biling assembly 19 and second servo loop cross-arm
Both components 20 structure is identical and is corresponded to based on cable terminal pole 1 in mirror image.The bottom of cable terminal pole 1 picks out the first circuit 2
With second servo loop 3, the first circuit 2 and second servo loop 3 form 220kV double loops, and the first circuit 2 is through the first circuit cross biling assembly 19
It draws, second servo loop 3 is drawn through second servo loop cross biling assembly 20, realizes that two circuits are directed to anchor support 12 to be cut-off at two
Cut-offfing on direction.
As shown in Fig. 2, the first circuit cross biling assembly 19 includes the terminal installed successively from the bottom to top based on cable terminal pole 1
Cross-arm 4, lower wire jumper cross-arm 5, middle wire jumper cross-arm 6 and upper wire jumper cross-arm 7.The end of terminal cross-arm 4 is equipped with 3 cable terminations 8,
Cable termination 8 accesses for the cable in the first circuit 2.The end of lower wire jumper cross-arm 5 is equipped under 3 lower hardware strings 9,3 golden
Tool string 9 is arranged with lower wire jumper cross-arm 5 in " ten " font, is drawn on the conducting wire of four different directions of realization, and meet between conducting wire
Corresponding pitch requirements.
The end of middle wire jumper cross-arm 6 be equipped with 2 middle 10,2 middle strain insulator-strings 10 of strain insulator-string be based on middle wire jumper cross-arm 6 hang down
Straight arrangement, 2 middle strain insulator-strings 10 draw use on two conducting wires.The end of upper wire jumper cross-arm 7 is equipped with 2 upper strain insulator-strings
11,2 upper strain insulator-strings 11 are based on wire jumper cross-arm 7 and are arranged vertically, and 2 upper strain insulator-strings 11 are made for the wire jumper of the top conducting wire
With.In practical applications, can ground wire cross-arm be installed with the top of cable terminal pole 1, in cable terminal pole 1 and strain insulator to be cut-off
Ground wire 21 is installed in a conventional manner as in the prior art between tower 12.
As shown in Fig. 2, anchor support 12 to be cut-off is the circuit tower for being ready for cut-offfing, in anchor support 12 to be cut-off and cable
The opposite side of terminal pole 1 is circuit to be cut-off, and opposite side of the anchor support 12 far from cable terminal pole 1 to be cut-off be not then to carry out
The circuit cut-off.Anchor support 12 to be cut-off, at a distance of 15-20m, in practical applications, is waited to cut-off resistance to cable terminal pole 1 in distance
The 15-20m of tower 12 carries out the construction of cable terminal pole 1, without being had a power failure for a long time to overhead transmission line, it is only necessary into
Of short duration power failure is carried out when row conductor wire jumper, ground wire wiring.
The three-phase in the first circuit 2 introduces 3 cable terminations 8 respectively, and the conducting wire drawn from 3 cable terminations 8 is respectively led into 3
It is connected in a 9,3 lower hardware strings 9 of lower hardware string towards the lower hardware string 9 of anchor support 12 to be cut-off extraction aerial condutor and waits to cut-off
Anchor support 12, a minimum phase conductor of this aerial condutor as three-phase.Another 2 lower hardware strings 9 in 3 lower hardware strings 9 draw
The conducting wire gone out is respectively led into 2 middle strain insulator-strings 10, for carrying out the upper, middle and lower layered arrangement of three-phase conducting wire.2 middle strain insulator-strings 10
The middle strain insulator-string 10 of middle direction anchor support 12 to be cut-off draws aerial condutor and is connected to anchor support 12 to be cut-off, this aerial condutor is three
One phase conductor of centre of phase.The conducting wire that another 1 middle strain insulator-string 10 in 2 middle strain insulator-strings 10 is drawn leads to strain insulator-string 11, and
Anchor support 12 to be cut-off is led to after another upper 11 transition of strain insulator-string, this is arranged as a most upper phase conductor for three-phase.Second time
The wire jumper connection mode on road 3 so similarly, as depicted in figs. 1 and 2, it is thus achieved that being directed to cut-offfing for anchor support 12 to be cut-off
Operation is handled.
In practical applications, arrester 14 can also be installed additional.As shown in figure 3, cable terminal pole 1 can also install arrester additional
Cross-arm 13 is installed, arrester installation cross-arm 13 is located between terminal cross-arm 4 and lower wire jumper cross-arm 5.Arrester installation cross-arm 13
End is equipped with 3 arresters 14 and 3 lead hardware strings, 15,3 lead hardware strings 15 and is used for lead, 3 cable ends
The conducting wire that end 8 is drawn leads to 3 lower hardware strings 9 through 3 lead hardware strings 15.3 lead hardware strings 15 lead to 3 lower hardware strings
3 arresters 14 are introduced by wire jumper on 9 conducting wire, to realize the lightning-arrest effect of 2 three-phase of the first circuit.
Here, lower hardware string 9 can be bar type hardware string, middle strain insulator-string 10 and upper strain insulator-string 11 can be bar type strain insulator
String.Draw new route section lead since line tension tower to be cut-off need to connect, as the section creates conducting wire both ends using conventional dish-type
Insulator resistant string designing scheme.The strain insulator-string often goes here and there that quality is larger, length is longer, then causes wire tension excessive, and the party
Case need to carry out traction construction, and wire tension can be further increased in the construction stage, and wire tension will exceed the circuit to be cut-off
The use scope of anchor support causes security risk even accident.Therefore bar type hardware string can be used in newly-built cable terminal pole 1
With bar type strain insulator-string so that conducting wire one end is rigidly secured on cable terminal pole 1, and the other end uses yoke plate and gold utensil traditional approach
Connecting wire strain clamp does not have an impact wire tension.
Meanwhile the aerial condutor drawn of lower hardware string 9 be connected on by T-shaped binding clip 18 anchor support 12 to be cut-off dish-type it is exhausted
On edge strain insulator-string 16, parallel groove clamp 17, the frame that lower hardware string 9 is drawn are also equipped on the aerial condutor that lower hardware string 9 is drawn
In extraction wire of the hollow wire by 17 lead of parallel groove clamp to coupled dish-type insulator resistant string 16.By using
Parallel groove clamp 17 is attached, and also avoids the larger influence to wire tension of conventional wires strain insulator-string string weight.To ensure that the T connects
Point position is unlikely to the breaking hidden danger caused by the larger long-term fever of resistance, herein also using 17 lead of parallel groove clamp to coupled
The design of the extraction wire of dish-type insulator resistant string 16 connect so that 7 and one section lead of parallel groove clamp is drained.
In actual use, when need to treat cut-off anchor support 12 and carry out cut-offfing operation when, 15-20m carries out electricity beside it
The construction of cable terminal pole 1, without being had a power failure for a long time.Wait that the first circuit 2, second servo loop 3 divide on anchor support 12 to be cut-off
Not after the first circuit cross biling assembly 19 and second servo loop cross biling assembly 20 install, short time power failure is carried out, by the first circuit
Cross biling assembly 19 and 20 respective wire of second servo loop cross biling assembly lead to anchor support 12 to be cut-off, and realize anchor support 12 1 to be cut-off
Cut-off operation in side.
The advantages of basic principle, main feature and the utility model of the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Only the utility model principle, on the premise of not departing from the spirit and scope of the utility model the utility model also have respectively
Kind changes and improvements, these changes and improvements are both fallen in claimed the scope of the utility model.The requires of the utility model
Protection domain defined by appended claims and its equivalent.
Claims (5)
1. a kind of 220kV double backs overhead transmission line cable cut-offs bar, including cable terminal pole (1), it is characterised in that：The cable
Terminal pole (1) is equipped with the first circuit cross biling assembly (19) and second servo loop cross biling assembly (20), the first circuit cross biling assembly
(19) it is identical with both second servo loop cross biling assemblies (20) structure and corresponding in mirror image based on cable terminal pole (1), cable termination
The bottom of bar (1) picks out the first circuit (2) and second servo loop (3), and the first circuit (2) draw through the first circuit cross biling assembly (19)
Go out, second servo loop (3) is drawn through second servo loop cross biling assembly (20)；
The terminal cross-arm that the first circuit cross biling assembly (19) is installed successively from the bottom to top including being based on cable terminal pole (1)
(4), lower wire jumper cross-arm (5), middle wire jumper cross-arm (6) and upper wire jumper cross-arm (7), the end of the terminal cross-arm (4) are equipped with 3
Cable termination (8), the end of lower wire jumper cross-arm (5) are equipped with 3 lower hardware strings (9), and 3 lower hardware strings (9) are horizontal with lower wire jumper
It carries on a shoulder pole (5) and arranges that the end of middle wire jumper cross-arm (6) is equipped with 2 middle strain insulator-strings (10), 2 middle strain insulator-strings (10) in " ten " font
It is based on middle wire jumper cross-arm (6) to be arranged vertically, the end of upper wire jumper cross-arm (7) is equipped with 2 upper strain insulator-strings (11), and 2 upper resistance to
String (11) is based on wire jumper cross-arm (7) and is arranged vertically.
2. a kind of 220kV double backs overhead transmission line cable according to claim 1 cut-offs bar, it is characterised in that：It further includes and treats
Cut-off anchor support (12), anchor support (12) to be cut-off and cable terminal pole (1) at a distance of 15-20m, first circuit (2)
Three-phase introduces 3 cable terminations (8) respectively, and the conducting wire drawn from 3 cable terminations (8) is respectively led into 3 lower hardware strings (9),
Aerial condutor, which is drawn, towards the lower hardware string (9) of anchor support to be cut-off (12) is connected to anchor support (12) to be cut-off, 3 lower hardware strings
(9) conducting wire that another 2 lower hardware strings (9) in are drawn is respectively led into 2 middle strain insulator-strings (10), towards anchor support to be cut-off (12)
Middle strain insulator-string (10) draw aerial condutor and be connected to anchor support (12) to be cut-off, another 1 middle strain insulator in 2 middle strain insulator-strings (10)
The conducting wire that string (10) is drawn leads to strain insulator-string (11) and leads to anchor support to be cut-off after another upper strain insulator-string (11) transition
(12)。
3. a kind of 220kV double backs overhead transmission line cable according to claim 1 cut-offs bar, it is characterised in that：Under described
Hardware string (9) is bar type hardware string, and the middle strain insulator-string (10) and upper strain insulator-string (11) are bar type strain insulator-string.
4. a kind of 220kV double backs overhead transmission line cable according to claim 1 cut-offs bar, it is characterised in that：Described
Primary Ioops cross biling assembly (19) further includes arrester installation cross-arm (13), and arrester installation cross-arm (13) is positioned at terminal cross-arm (4)
Between lower wire jumper cross-arm (5), the end of arrester installation cross-arm (13) is equipped with 3 arresters (14) and 3 lead gold utensils
It goes here and there (15), the conducting wire that 3 cable terminations (8) are drawn leads to 3 lower hardware strings (9) through 3 lead hardware strings (15) respectively, 3
Lead hardware string (15) is led on the conducting wire of 3 lower hardware strings (9) introduces 3 arresters (14) respectively by wire jumper.
5. a kind of 220kV double backs overhead transmission line cable according to claim 2 cut-offs bar, it is characterised in that：Under described
The aerial condutor that hardware string (9) is drawn is connected on the dish-type insulator strain of anchor support (12) to be cut-off by T-shaped binding clip (18)
It goes here and there on (16), parallel groove clamp (17), the frame that lower hardware string (9) is drawn is also equipped on the aerial condutor that lower hardware string (9) is drawn
In extraction wire of the hollow wire by parallel groove clamp (17) lead to coupled dish-type insulator resistant string (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721461952.9U CN207518244U (en) | 2017-11-06 | 2017-11-06 | A kind of 220kV double backs overhead transmission line cable cut-offs bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721461952.9U CN207518244U (en) | 2017-11-06 | 2017-11-06 | A kind of 220kV double backs overhead transmission line cable cut-offs bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207518244U true CN207518244U (en) | 2018-06-19 |
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ID=62538251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721461952.9U Active CN207518244U (en) | 2017-11-06 | 2017-11-06 | A kind of 220kV double backs overhead transmission line cable cut-offs bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207518244U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112864997A (en) * | 2021-01-05 | 2021-05-28 | 东阳市光明电力建设有限公司 | Cross arm structure for branch line to connect upper-layer wires of four loops |
| CN113090096A (en) * | 2021-03-19 | 2021-07-09 | 国核电力规划设计研究院有限公司 | Double-circuit power transmission line disconnection tower, disconnection system and method |
-
2017
- 2017-11-06 CN CN201721461952.9U patent/CN207518244U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112864997A (en) * | 2021-01-05 | 2021-05-28 | 东阳市光明电力建设有限公司 | Cross arm structure for branch line to connect upper-layer wires of four loops |
| CN113090096A (en) * | 2021-03-19 | 2021-07-09 | 国核电力规划设计研究院有限公司 | Double-circuit power transmission line disconnection tower, disconnection system and method |
| CN113090096B (en) * | 2021-03-19 | 2022-11-29 | 国核电力规划设计研究院有限公司 | Double-circuit power transmission line disconnection tower, disconnection system and method |
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