CN215168584U - Strain tower and power transmission system - Google Patents
Strain tower and power transmission system Download PDFInfo
- Publication number
- CN215168584U CN215168584U CN202121791278.7U CN202121791278U CN215168584U CN 215168584 U CN215168584 U CN 215168584U CN 202121791278 U CN202121791278 U CN 202121791278U CN 215168584 U CN215168584 U CN 215168584U
- Authority
- CN
- China
- Prior art keywords
- cross arm
- tower
- wire
- phase
- built
- 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.)
- Active
Links
Images
Landscapes
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The utility model discloses a strain insulator tower and transmission of electricity system, strain insulator tower includes: the tower body is provided with a ground wire cross arm, an upper wire cross arm, a middle wire cross arm and a lower wire cross arm which are sequentially distributed from top to bottom; wherein, go up the wire cross arm and be T type cross arm, cross arm under the wire cross arm is including setting up in the first cross arm of body of the tower and being located the second of first cross arm one side, and first cross arm is a style of calligraphy cross arm down, and the cross arm is T type cross arm under the second. The tension tower can realize pi connection in the corridor range of the built line, and compared with the prior art, the tension tower effectively reduces the corridor width required by accessing the tension tower; meanwhile, the T-shaped cross arm is far away from the tower body, so that the requirement on the electric clearance of the tower is convenient to guarantee, and the safety and reliability are improved.
Description
Technical Field
The utility model relates to the technical field, more specifically say, relate to a strain insulator tower and transmission system.
Background
The structure of shaft tower is various among the high tension transmission line, and the cross arm of shaft tower generally adopts a style of calligraphy cross arm. With the development of power grids and the increase of newly-built substations, the problem to be solved when the existing planning and long-term planning of the power transmission line is to access the established power transmission line pi into the newly-built substations.
As shown in fig. 1, the pi connection mode of the single-loop line is to newly build two single-loop strain towers 03 under an original line 01, and the lines led out from the two single-loop strain towers 03 are merged into a same-tower double-loop line to be connected into a transformer substation through a strain tower 02.
Two single-circuit strain towers 03 are newly built under an original line 01, the safety distance needs to be ensured, the distance between the two single-circuit strain towers 03 is large, the width L of a corridor required by the access of the strain tower 02 is large, and the strain tower is not suitable for a corridor tight area.
In summary, how to implement pi connection of a built power transmission line to reduce the width of a corridor required by pi connection is an urgent problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a strain insulator tower can realize pi of the transmission line of having built and connect to reduce pi and connect required corridor width. Another object of the present invention is to provide a power transmission system including the above strain tower.
In order to achieve the above object, the utility model provides a following technical scheme:
a strain tower, comprising: the tower body is provided with a ground wire cross arm, an upper wire cross arm, a middle wire cross arm and a lower wire cross arm which are sequentially distributed from top to bottom;
the upper wire cross arm is a T-shaped cross arm, the lower wire cross arm comprises a first lower cross arm arranged on the tower body and a second lower cross arm positioned on one side of the first lower cross arm, the first lower cross arm is a straight cross arm, and the second lower cross arm is a T-shaped cross arm.
Optionally, the upper wire cross arm and the second lower cross arm are located on the same side of the tower body.
Optionally, the first lower cross arm and the second lower cross arm are arranged at the same height.
Optionally, the middle wire cross arm is a straight cross arm.
Optionally, the upper wire cross arm, the middle wire cross arm and the second lower cross arm are arranged in parallel.
Optionally, the first lower cross arm and the second lower cross arm are vertically disposed.
Optionally, the lengths of the middle wire cross arm and the upper wire cross arm are different, and/or the lengths of the middle wire cross arm and the second lower cross arm are different.
Optionally, the ground wire cross arm is a straight cross arm, and the ground wire cross arm is perpendicular to the first lower cross arm.
Optionally, the strain tower is made of angle steel.
The utility model provides a strain insulator tower, through selecting to go up the direction cross arm and include T type cross arm for T type cross arm and lower direction cross arm, can realize pi according to the structural feature of T type cross arm and connect in having built the circuit, set up above-mentioned strain insulator tower promptly in having built the circuit. Therefore, the tension tower can realize pi connection in the corridor range of the built line, and compared with the prior art, the tension tower effectively reduces the corridor width required by pi connection.
And simultaneously, the utility model provides a strain insulator tower because the body of the tower is kept away from to T type cross arm, then is convenient for guarantee to the requirement in shaft tower electrical clearance, has improved fail safe nature.
Based on the strain insulator tower that the aforesaid provided, the utility model also provides a power transmission system, this power transmission system include strain insulator tower, strain insulator tower is above-mentioned arbitrary strain insulator tower.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram of a prior art pi-junction for a single-circuit line;
fig. 2 is a schematic structural diagram of a tension tower according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a power transmission line provided in an embodiment of the present invention;
fig. 4 is a top view of the power transmission line shown in fig. 3;
fig. 5 is another schematic structural diagram of the power transmission line provided by the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 2, the embodiment of the utility model provides a strain insulator tower includes: the tower body 105 is arranged on the tower body 105, and the ground wire cross arm 101, the upper wire cross arm 102, the middle wire cross arm 103 and the lower wire cross arm 104 are sequentially distributed from top to bottom.
Specifically, the upper wire cross arm 102 is a T-shaped cross arm; the lower wire cross arm 104 includes a first lower cross arm 1041 disposed on the tower body 105 and a second lower cross arm 1042 disposed on one side of the first lower cross arm 1041, the first lower cross arm 1041 is a straight cross arm, and the second lower cross arm 1042 is a T-shaped cross arm.
In practical application, as shown in fig. 3 to 5, the ground wire cross arm 101 is used to set an existing ground wire hanging point and a new ground wire hanging point, so as to ensure the requirement of the new ground wire 800 of the new line on the protection angle of the conducting wire; the upper wire cross arm 102 is used for setting a built A phase line hanging point and a new A phase line hanging point, the first lower cross arm 1041 is used for setting a built B phase line hanging point, the second lower cross arm 1042 is used for setting a built C phase line hanging point and a new C phase line hanging point, and the middle wire cross arm 103 is used for setting a new B phase line hanging point.
It should be noted that the established ground wire hanging point is used for setting the established ground wire 400 in the established line, the new ground wire hanging point is used for setting the new ground wire 800 in the new line, the established a-phase wire hanging point is used for setting the established a-phase wire 500 in the established line, the new a-phase wire hanging point is used for setting the new a-phase wire 900 in the new line, the established B-phase wire hanging point is used for setting the established B-phase wire 600 in the established line, the new B-phase wire hanging point is used for setting the new B-phase wire 1000 in the new line, the established C-phase wire hanging point is used for setting the established C-phase wire 700 in the established line, and the new C-phase wire hanging point is used for setting the new C-phase wire 1100 in the new line.
Specifically, if the newly-built tower 300 is a single-loop newly-built tower, and there are two single-loop newly-built towers, at this time, two of the established ground wire hanging points, the newly-built ground wire hanging points, the established phase line A hanging points, the newly-built phase line A hanging points, the established phase line B hanging points, the newly-built phase line B hanging points, the established phase line C hanging points and the newly-built phase line C hanging points are selected; if the newly-built tower 300 is a double-loop newly-built tower, and one double-loop newly-built tower is provided, at this time, the built ground wire hanging point, the newly-built ground wire hanging point, the built A phase wire hanging point, the newly-built A phase wire hanging point, the built B phase wire hanging point, the newly-built B phase wire hanging point, the built C phase wire hanging point and the newly-built C phase wire hanging point are all one, and the requirements can be met.
In order to improve the universality, two of the established line ground wire hanging points, the newly-built ground wire hanging points, the established A phase wire hanging points, the newly-built A phase wire hanging points, the established B phase wire hanging points, the newly-built B phase wire hanging points, the established C phase wire hanging points and the newly-built C phase wire hanging points are preferably selected. Therefore, the strain tower is suitable for a single-loop newly-built tower and a double-loop newly-built tower, and the universality is improved.
It should be noted that, if the newly-built tower 300 is a single-loop newly-built tower, there are two single-loop newly-built towers, and there are two established ground wire hanging points and two newly-built ground wire hanging points, four ground wires can be erected, so as to meet the requirement of the newly-built ground wire 800 on the protection angle of the side wire, and the tension tower can be used in the line of 110kV or above. Specifically, the tension tower is suitable for 110kV and above high-voltage lines in ice-free areas, with the established lines being single-loop and single-ground lines. In the practical application process, the size of the tension tower can be modified and optimized according to the requirement of the ice-covered area, and the ground wire cross arm 101 can be modified, for example, the length of the ground wire cross arm 101 can be modified so as to be used for the double-ground and ice-covered area lines.
The tension tower provided by the above embodiment is that the upper guide cross arm 102 is selected to be the T-shaped cross arm, and the lower guide cross arm 104 includes the T-shaped cross arm, so that pi connection can be realized in the established line according to the structural characteristics of the T-shaped cross arm, that is, the tension tower is arranged in the established line. Therefore, the tension tower can realize pi connection in the corridor range of the built line, and compared with the prior art, the tension tower effectively reduces the corridor width required by pi connection.
In the tension tower provided by the embodiment, the T-shaped cross arm is far away from the tower body, so that the requirement on the electric clearance of the tower is conveniently met, and the safety and reliability are improved.
The tension tower provided by the embodiment can realize pi connection in the corridor range of the built line, the pi connection point only needs to be assembled with one base tension tower, and other towers adopt common towers, so that the connection is clear and simple, the engineering quantity is greatly reduced, and the construction period is shortened; and one base strain tower can connect the original single loop with the pi into a same tower double loop, so that the construction workload is reduced, the occupied area of the tower base is saved, the influence on the environment near the pi joint is reduced, and the utilization rate of the land space is improved.
In the tension tower provided in the above embodiment, the first lower cross arm 1041 is used to set a built B-phase line hanging point, and the middle wire cross arm 103 is used to set a newly built B-phase line hanging point and a jumper hanging point, so that the requirement for an electrical gap is conveniently ensured; and the established B-phase line hanging point and the established C-phase line hanging point are arranged on the lower lead cross arm 104, so that the distribution of the A phase, the B phase and the C phase in the tension tower is convenient to realize to be the same as that of the A phase, the B phase and the C phase in the established tower 200, and the phase sequence in the tension tower is consistent with that in the established tower 200.
It should be noted that, the jumper connecting the newly-built phase-B line 1000 and the already-built phase-B line 600 is disposed at the jumper hanging point.
Because the tension tower can be connected with two single-loop newly-built towers and can also be connected with a double-loop newly-built tower, the tension tower is particularly suitable for the condition that the tension tower needs to be drilled first and then connected in a pi mode, the construction engineering amount can be effectively reduced, the investment is saved, and the occupied area is reduced.
In the above-mentioned tension tower, the upper wire cross arm 102 and the second lower cross arm 1042 can be selectively located on the same side of the tower body 105, so that the distribution of the phase a, the phase B and the phase C in the tension tower 100 is the same as the distribution of the phase a, the phase B and the phase C in the established tower 200, and the phase sequence in the tension tower 100 is the same as the phase sequence in the established tower 200.
Of course, upper wire cross arm 102 and second lower cross arm 1042 may alternatively be located on different sides of tower 105 and are not limited to the embodiments described above.
In the tension tower, the first lower cross arm 1041 and the second lower cross arm 1042 are arranged at the same height, so that the distribution of the phase B and the phase C in the tension tower 100 is the same as the distribution of the phase B and the phase C in the constructed tower 200. In practical applications, the first lower cross arm 1041 and the second lower cross arm 1042 may also have a smaller height difference, and are not limited to the above embodiments.
In the tension tower, the type of the middle wire cross arm 103 is selected according to actual needs, which is not limited in this embodiment. Specifically, in order to simplify the structure, the middle wire cross arm 103 may be selected as a straight cross arm.
In the practical application process, the relative position relationship among the upper wire cross arm 102, the middle wire cross arm 103, the first lower cross arm 1401 and the second lower cross arm 1042 is selected according to the practical requirement. Specifically, upper wire cross arm 102, middle wire cross arm 103, and second lower cross arm 1042 are arranged in parallel. To facilitate meeting the electrical clearance requirement, the lengths of middle wire cross arm 103 and upper wire cross arm 102 are different, and/or the lengths of middle wire cross arm 103 and second lower cross arm 1042 are different. In order to ensure that the requirements of design specifications on electrical gaps can be met among the cross arms of each layer, the lengths of the middle wire cross arm 103 and the upper wire cross arm 102 are different, and the lengths of the middle wire cross arm 103 and the second lower cross arm 1042 are different.
The length difference between middle wire cross arm 103 and upper wire cross arm 102, the length difference between middle wire cross arm 103 and second lower cross arm 1042, the length of middle wire cross arm 103, the length of upper wire cross arm 102, and the length of second lower cross arm 1042 are selected according to actual needs, which is not limited in this embodiment.
For convenience of installation, the first lower cross arm 1041 and the second lower cross arm 1042 are vertically disposed. At this time, the middle wire cross arm 103 and the first lower cross arm 1041 are vertically disposed. In this way, it is convenient to meet the requirements for electrical clearance.
In practical applications, the angle between the first lower cross arm 1041 and the second lower cross arm 1042 may be slightly smaller than 90 °, and is not limited to the above embodiment.
In the tension tower, the type of the ground wire cross arm 101 is selected according to actual needs. For example, the ground cross arm 101 is a straight cross arm, and optionally the ground cross arm 101 is perpendicular to the first lower cross arm 1041, and the ground cross arm 101 is parallel to the middle conductor cross arm 103. Of course, the ground wire cross arm 101 may be of other types, which is not limited in this embodiment.
In the practical application process, the tension tower can be made of angle steel, so that materials can be conveniently obtained, the model of the angle steel which is the same as that of the built tower 200 can be selected, the material source is wide, and the production and the processing are convenient and simple.
Based on the tension tower provided by the above embodiment, the present embodiment further provides a power transmission system, where the power transmission system includes the tension tower 100, and the tension tower 100 is the tension tower described in the above embodiment.
Since the tension tower provided by the above embodiment has the above technical effects, and the power transmission system includes the above tension tower, the power transmission system also has corresponding technical effects, which are not described herein again.
The power transmission system further comprises an established tower 200, the distribution of the phase A, the phase B and the phase C in the established tower 200 is the same as that of the phase A, the phase B and the phase C in the tension tower 100, and the phase sequence in the established tower 200 is consistent with that in the tension tower 100. At this time, the wires of the built lines connecting the built tower 200 and the tension tower 100 are all straight lines, the suspension strings of the tangent tower cannot deflect, the phenomenon of crossing waist of the suspension strings of the wires of the built lines is avoided, and the applicability to the built lines is good.
Further, as shown in fig. 4, the established a phase line 500 in the connection of the established tower 200 and the tension tower 100, the established B phase line 600 in the connection of the established tower 200 and the tension tower 100, and the established C phase line 700 in the connection of the established tower 200 and the tension tower 100 are parallel to each other, and the projections of the established a phase line 500 and the established C phase line 700 along the vertical direction coincide.
For the convenience of installation, the wires of the established lines of the power transmission system are hung at the hanging points of the upper wire cross arm 102 and the lower wire cross arm 104 through strain insulator strings, the wires of the established lines are electrically connected with the wires of the newly-built lines through jumper wires, and the jumper wires are arranged on the upper wire cross arm 102, the middle wire cross arm 103 and the lower wire cross arm 104.
It should be noted that the newly-built ground wire 800, the newly-built phase a wire 900, the newly-built phase B wire 1000 and the newly-built phase C wire 1100 are all referred to as wires of a newly-built circuit; the above-described established ground line 400, established phase a line 500, established phase B line 600 and established phase C line 700 are all referred to as the conductors of the established line.
Specifically, the established ground wire hanging point, the newly-established ground wire hanging point, the established A phase wire hanging point, the newly-established A phase wire hanging point, the established B phase wire hanging point, the newly-established B phase wire hanging point, the established C phase wire hanging point and the newly-established C phase wire hanging point are collectively called as hanging points, and the strain insulator string is arranged at the established ground wire hanging point, the established A phase wire hanging point, the established B phase wire hanging point and the established C phase wire hanging point. The established phase line A500 and the newly-built phase line A900 are electrically connected by adopting jumper wires, the established phase line B600 and the newly-built phase line B1000 are electrically connected by adopting the jumper wires, and the established phase line C700 and the newly-built phase line C1100 are electrically connected by adopting the jumper wires. And jumper wire insulator strings are arranged at jumper wire hanging points of the middle lead cross arm 103, and jumper wires for connecting the newly-built B-phase lead 1000 and the built B-phase lead 600 are arranged on the jumper wire insulator strings.
The transmission system further comprises a newly built tower 300, wherein the newly built tower is used for erecting a conducting wire of a newly built line, and the conducting wire of the newly built line is electrically connected with a conducting wire of an established line led to the tension tower 100.
The newly-built tower 300 is a single-loop newly-built tower or a double-loop newly-built tower. If the newly-built tower 300 is a single-loop newly-built tower, as shown in fig. 4, two towers 200 are already built and two single-loop newly-built towers are newly built; if the newly-built towers 300 are two new towers with two loops, as shown in fig. 5, there are two existing towers 200 and one new tower with two loops.
It should be noted that, in fig. 3, only one established tower 200 and one newly-built tower 300 are shown; in fig. 5, only one established tower 200 is shown.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A strain tower, comprising: the tower body (105) is arranged on the tower body (105), and the ground wire cross arm (101), the upper lead cross arm (102), the middle lead cross arm (103) and the lower lead cross arm (104) are sequentially distributed from top to bottom;
the upper wire cross arm (102) is a T-shaped cross arm, the lower wire cross arm (104) comprises a first lower cross arm (1041) arranged on the tower body (105) and a second lower cross arm (1042) located on one side of the first lower cross arm (1041), the first lower cross arm (1041) is a straight cross arm, and the second lower cross arm (1042) is a T-shaped cross arm.
2. The tension tower of claim 1, wherein the upper wire cross arm (102) and the second lower cross arm (1042) are located on a same side of the tower body (105).
3. The tension tower of claim 1, wherein the first lower cross arm (1041) and the second lower cross arm (1042) are disposed at equal heights.
4. The tension tower of claim 1, wherein the center conductor cross arm (103) is a straight cross arm.
5. The tension tower of claim 4, wherein the upper wire cross arm (102), the middle wire cross arm (103) and the second lower cross arm (1042) are arranged in parallel.
6. The tension tower of claim 5, wherein the first lower cross arm (1041) and the second lower cross arm (1042) are vertically disposed.
7. The tension tower of claim 5, wherein the length of the middle wire cross arm (103) and the upper wire cross arm (102) are different, and/or the length of the middle wire cross arm (103) and the second lower cross arm (1042) are different.
8. The tension tower of claim 1, wherein the ground wire cross arm (101) is a straight cross arm, the ground wire cross arm (101) being perpendicular to the first lower cross arm (1041).
9. The tension tower of any one of claims 1-8, wherein the tension tower is made of angle steel.
10. An electric power transmission system comprising a strain tower (100), characterized in that the strain tower (100) is a strain tower according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121791278.7U CN215168584U (en) | 2021-08-02 | 2021-08-02 | Strain tower and power transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121791278.7U CN215168584U (en) | 2021-08-02 | 2021-08-02 | Strain tower and power transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215168584U true CN215168584U (en) | 2021-12-14 |
Family
ID=79405867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121791278.7U Active CN215168584U (en) | 2021-08-02 | 2021-08-02 | Strain tower and power transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215168584U (en) |
-
2021
- 2021-08-02 CN CN202121791278.7U patent/CN215168584U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202810314U (en) | 220kV T-shaped double-circuit drilling tower | |
| CN215168584U (en) | Strain tower and power transmission system | |
| CN207813168U (en) | Singly cut-off π sections towers in double loop | |
| CN207260730U (en) | A kind of double loop cable termination tower | |
| CN216921590U (en) | Large-corner dry-shaped transformer substation outlet strain tower | |
| CN210858200U (en) | Single-loop multipurpose tower | |
| CN215119560U (en) | Single-pin joint-frame wire inlet and outlet structure of 110kV power distribution device | |
| CN211974573U (en) | Direct-current mixed-voltage multi-loop branch tower and alternating-current mixed-voltage multi-loop branch tower | |
| CN210888265U (en) | Open loop tower | |
| CN208184360U (en) | A kind of mono- back transmission line π of 220kV connects anchor support | |
| CN208106036U (en) | A kind of novel single back line π is into cable terminal steel pipe pole | |
| CN213742621U (en) | 500kV single-loop cat-shaped tower iron tower with cross arm for opening and closing | |
| CN219477434U (en) | Compact arrangement structure of outgoing lines of transformer substation | |
| CN110056244B (en) | Single-loop multipurpose pole tower | |
| CN101425666B (en) | Common phase sequence common-tower common-window dual loop transmission line | |
| CN111827771A (en) | Branch tower for four-loop overhead transmission line | |
| CN219138564U (en) | Cable terminal pole | |
| CN218454609U (en) | Double-loop pi-shaped connection tower for high-altitude power transmission line | |
| CN215407737U (en) | Cable terminal spanning tower | |
| CN217501246U (en) | Double-circuit double-sub open-shaped drilling tower | |
| CN220247776U (en) | 220kV horizontal arrangement Zhang Juxing open low-penetration tower for four-split conductor | |
| CN205012746U (en) | Last style of calligraphy of 35kV cluster tangent tower | |
| CN220395332U (en) | Steel pipe pole for pi connection of power transmission line | |
| CN203867258U (en) | 110kV lattice composite material pole tower | |
| CN108923278B (en) | Sail type multilayer combined framework outgoing line structure of 330kV outdoor GIS power distribution device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: High tech Zone of Hefei city of Anhui Province in 230088 Lake Road No. 2 Patentee after: Sunshine New Energy Development Co.,Ltd. Address before: High tech Zone of Hefei city of Anhui Province in 230088 Lake Road No. 2 Patentee before: Sunshine New Energy Development Co.,Ltd. |