CN211647529U - Double-loop tower - Google Patents
Double-loop tower Download PDFInfo
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- CN211647529U CN211647529U CN201922074058.1U CN201922074058U CN211647529U CN 211647529 U CN211647529 U CN 211647529U CN 201922074058 U CN201922074058 U CN 201922074058U CN 211647529 U CN211647529 U CN 211647529U
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- cross arm
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Abstract
The utility model discloses a two return circuit shaft towers, include: a first support member; a second support member; one end of the first insulating cross arm is fixed on the first supporting piece, the other end of the first insulating cross arm is a first wire hanging end used for fixing a first wire, and the first wire hanging end faces the second supporting piece; one end of the second insulating cross arm is fixed on the second supporting piece, the other end of the second insulating cross arm is a second wire hanging end used for fixing a second wire, and the second wire hanging end faces the first supporting piece; the distance between the first wire hanging end and the second wire hanging end is larger than or equal to the safety distance between the first wire and the second wire. The respective string of line end of first insulating cross arm and second insulating cross arm is close to each other, does not have any part separation between first wire and the second wire for the interval of first wire and second wire satisfy the safe distance of requirement can, the interval between first wire and the second wire obtains reducing, and then has reduced the corridor width by a wide margin, applicable in the harsh condition of requirement to the corridor.
Description
Technical Field
The utility model relates to a transmission of electricity technical field especially relates to a two return circuit shaft towers.
Background
In recent years, a novel composite cross arm power transmission line is gradually accepted by power grid owners and experts in the industry as one of compact lines. With the application of the composite insulating cross arm pole tower in high-voltage, ultrahigh-voltage and extra-high-voltage transmission projects at home and abroad, the research and experience accumulation of the pole tower also reach unprecedented heights. The design form of the composite cross arm tower is mostly based on the existing tower type structure, the width of a corridor is reduced by adopting the composite cross arm, but the composite cross arm designed based on the traditional tower type can not meet the requirement under the condition that the requirement on the line corridor is severe.
SUMMERY OF THE UTILITY MODEL
Based on this, it is necessary to provide a double-circuit tower which can further reduce the corridor width.
The technical scheme is as follows:
a dual-circuit tower comprising:
a first support member;
a second support member;
the first insulating cross arm is fixed on the first supporting piece at one end, and a first bearing end for fixing a first lead is arranged at the other end and faces the second supporting piece;
one end of the second insulating cross arm is fixed on the second supporting piece, the other end of the second insulating cross arm is a second bearing end used for fixing a second lead, and the second bearing end faces the first supporting piece;
the distance between the first bearing end and the second bearing end is larger than or equal to the safety distance of the first lead relative to the second lead.
In the above-mentioned two return circuit shaft towers, the first insulating cross arm and the second insulating cross arm that set up on two support pieces set up towards the direction that is close to each other. In the prior art, the two sides of the supporting piece are provided with the insulating cross arms, the first lead and the second lead are separated from the tower head through the insulating cross arms and limited by the size of the tower head, and the distance between the first lead and the second lead is far larger than the actual required safety distance. The respective end of accepting of first insulating cross arm and second insulating cross arm is close to each other in this scheme, does not have any part separation between first wire and the second wire for safe distance between first wire and the second wire is minimum, and the interval between first wire and the second wire obtains reducing, and then has reduced the corridor width by a wide margin, applicable in the harsh condition of requirement to the corridor.
In one embodiment, the first insulating cross arm is formed with three, and the dual-circuit tower further comprises a connecting piece fixedly connected with the first supporting piece and the second supporting piece.
In one embodiment, two ends of the connecting member are fixedly connected to the top of the first supporting member and the top of the second supporting member respectively.
In one embodiment, the first support and the second support are both poles. The pole cost is lower and can satisfy insulating cross arm's setting requirement.
In one embodiment, three first insulating cross arms are arranged on the first supporting piece, three first wires are hung on the first wire hanging ends of the three first insulating cross arms respectively, and the three first insulating cross arms are arranged at intervals of a preset distance; the second support piece is provided with three second insulating cross arms, three second wires are hung on second wire hanging ends of the three second insulating cross arms respectively, the three second insulating cross arms are arranged at intervals of the preset distance, and the preset distance is a safety distance between three phases of the first wires and/or a safety distance between three phases of the second wires. Thereby the interval between two wires of reduction by a maximum margin, and then the corridor width of reducing two return circuit shaft towers reduces the land demand and saves the cost, also can be applicable to the comparatively harsh condition to the circuit corridor simultaneously.
In one embodiment, a first pulling member is arranged on the first supporting member, one end of the first pulling member is fixed on the first supporting member, the other end of the first pulling member is connected with the first insulating cross arm, and the first pulling member is an insulating member and is located above the first insulating cross arm. The first supporting piece is used for improving the stress strength of the first insulating cross arm and improving the stability of the transmission lead support.
In one embodiment, the first pull member is a line insulator.
In one embodiment, the first and second supports are lattice supports.
In one embodiment, the dual-circuit tower further comprises a third insulating cross arm and a fourth insulating cross arm, the cross section of the lattice type supporting piece is rectangular, one end of the third insulating cross arm is connected to the first supporting piece, the first insulating cross arm and the third insulating cross arm are respectively connected to adjacent edges of the first supporting piece, and the other end of the third insulating cross arm is connected with the other end of the first insulating cross arm to form a V-shaped first supporting column structure; one end of the fourth insulating cross arm is connected to the second supporting piece, the second insulating cross arm and the fourth insulating cross arm are respectively connected to the adjacent edges of the second supporting piece, and the other end of the fourth insulating cross arm is connected with the other end of the second insulating cross arm to form a V-shaped second support column structure. The pillar structure and the supporting piece form a triangular structure, the structure is more stable, and the stability of the transmission lead is better.
In one embodiment, the first pulling member includes two line insulators, one end of each of the two line insulators is connected to the V-shaped end of the first support structure, and the other ends of the two line insulators are respectively connected to two adjacent edges of the first support member, so as to form a V-shaped first pulling structure.
Drawings
Fig. 1 is a schematic structural view of a double-circuit tower in a first embodiment;
fig. 2 is a schematic structural view of a double-circuit tower in a second embodiment;
fig. 3 is a schematic view of the connection of the first insulating cross arm and the first pulling member of the double-circuit tower in the second embodiment;
fig. 4 is a schematic structural view of a double-circuit tower in a third embodiment;
fig. 5 is a schematic view of a first support structure and a first pulling structure in a third embodiment.
Wherein: 1. a first support member; 11. a first pull member; 2. a second support member; 21. a second pulling member; 3. a first insulating cross arm; 31. a first hanging end; 4. a second insulating cross arm; 41. a second hanging end; 5. a connecting member; 6. and a third insulating cross arm.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the present invention, the terms "first" and "second" do not denote any particular quantity or order, but are merely used to distinguish names.
The utility model discloses a first embodiment discloses a two return circuit shaft towers for bear two return circuit wires.
As shown in fig. 1, the double-circuit tower includes: the support comprises a first support member 1, a second support member 2, a first insulating cross arm 3 arranged on the first support member 1 and a second insulating cross arm 4 arranged on the second support member 2. One end of the first insulating cross arm 3 is fixed on the first supporting member 1, the other end is a first wire hanging end 31 arranged towards the second supporting member 2, and the first wire hanging end 31 is used for bearing a first wire; one end of the second insulating cross arm 4 is fixed on the second supporting member 2, the other end is a second wire hanging end 41 arranged towards the first supporting member 1, and the second wire hanging end 41 is used for bearing a second wire. The distance between the first wire hanging end 31 and the second wire hanging end 41 is greater than or equal to the safe distance between the first wire and the second wire, and the wire setting requirement is met.
In a dual-circuit tower in the prior art, generally, insulation cross arms are arranged on two sides of a supporting member, a first conducting wire and a second conducting wire are separated from a tower head through the insulation cross arms and limited by the size of the tower head and the distance between the tower head, and the distance between the first conducting wire and the second conducting wire is far larger than an actually required safety distance. In a double-circuit tower, the larger the distance between a first wire and a second wire is, the larger the corridor width of the double-circuit tower is, the larger the land area to be assessed is, the resource and the cost are consumed, and the requirement cannot be met under the condition that the requirement of a circuit corridor is severe, so that underground transmission with higher cost may need to be selected. Therefore, if the requirement of the installation safety distance between the first lead and the second lead can be met, the distance between the first lead and the second lead is reduced as much as possible; can reach the corridor width, the construction of reducing the double circuit body of rod and call the area, reduce the effect of the resource and the cost of consumption, also can make the double circuit shaft tower be suitable for the comparatively harsh condition to line corridor.
In the double-loop tower in this embodiment, there is no separation between the first wire fixed at the first hanging wire end 31 and the second wire fixed at the second hanging wire end 41, and the safety distance between the first hanging wire end 31 and the second hanging wire end 41 can be minimized according to the requirements of the transmitted wires during design. In this embodiment, first insulating cross arm 3 and second insulating cross arm 4 set up in opposite directions, need not to set up bearing structure between the two, consequently can reduce the interval between two wires by maximum amplitude, and then reduce the corridor width of two return circuit shaft towers, reduce the land demand and save the cost, also can be applicable to the comparatively harsh condition in line corridor simultaneously.
The number of the first insulating cross arms 3 and the number of the second insulating cross arms 4 are three, the first insulating cross arms 3 and the second insulating cross arms 4 are respectively arranged on the first supporting piece 1 and the second supporting piece 2, the length of each first insulating cross arm 3 is equal, and the length of each second insulating cross arm 4 is equal. The first wire and the second wire also respectively comprise three phases, the first wire hanging end 31 on each first insulating cross arm 3 is respectively hung with a first phase of the first wire, the second wire hanging end 41 on each second insulating cross arm 4 is respectively hung with a second phase of the second wire, and the three-phase first wire and the three-phase second wire are in one-to-one correspondence. The three first insulating cross arms 3 are arranged at intervals of a preset distance, and the three second insulating cross arms 4 are arranged at intervals of a preset distance, wherein the preset distance is a safe distance between three-phase first conductors and/or a safe distance between three-phase second conductors, and meets the safety requirement of conductor arrangement. In this embodiment, each of the first insulating cross arm 3 and the second insulating cross arm 4 is a composite cross arm made of a composite material, and the composite cross arm has the advantages of strong insulating property, high rigidity, light weight, easiness in installation, corrosion resistance and the like, and is suitable for the double-loop tower in this embodiment.
It is worth noting that the first supporting piece 1 and the second supporting piece 2 can be electric poles or lattice towers, in the embodiment, the first supporting piece 1 and the second supporting piece 2 are electric poles, the electric poles are low in cost, and the setting requirement of the insulating cross arm can be met under the condition of low voltage grade. The double-circuit tower further comprises: one end of the connecting piece 5 is connected to the top of the first supporting piece 1, and the other end of the connecting piece 5 is connected to the top of the second supporting piece 2, so that the first supporting piece 1 and the second supporting piece 2 are fixed, and the stability of the first supporting piece 1 and the second supporting piece 2 is enhanced. Of course, in other embodiments, the connecting member 5 may also be connected to other positions of the first supporting member 1 and the second supporting member 2, such as a position near the top or a middle portion, etc., only by making the connecting member 5 can strengthen the connection between the first supporting member 1 and the second supporting member 2, and the specific position is not particularly limited.
Double circuit shaft tower in this embodiment sets up first insulating cross arm 3 and second insulating cross arm 4 towards the direction that is close to each other through on first support piece 1 and second support piece 2, reduces the distance between first wire and the second wire when satisfying the safe distance requirement to reduce the corridor width, reduce the area of occupation soil, practice thrift the cost, can be suitable for the comparatively harsh condition of line corridor width requirement.
The second embodiment of the present invention relates to a double-circuit tower, and the general embodiment is the same as the double-circuit tower in the first embodiment, and the main difference lies in that, as shown in fig. 2 and fig. 3, the first support member 1 is provided with the first pulling member 11, and the second support member 2 is provided with the second pulling member 21, so as to promote the stress strength of the first insulating cross arm 3 and the second insulating cross arm 4, and promote the stability supported by the transmission wire, wherein the first pulling member 11 and the second pulling member 12 are insulating members.
The first drawing parts 11 are the same in number and correspond to the first insulating cross arms 3 one by one, one end of each first drawing part 11 is fixed on the first supporting part 1, the other end of each first drawing part is connected to the corresponding first insulating cross arm 3, and for better drawing the first insulating cross arms 3 and the wires connected with the first hanging wire end 31, the first drawing parts 11 are connected to the first insulating cross arms 3 and can be connected to the first hanging wire end 31 so as to achieve the maximum drawing force. The end of the first pulling part 11 fixed on the first supporting part 1 is higher than the first insulating cross arm 3, so as to provide pulling force for the first insulating cross arm 3 to reinforce the first insulating cross arm 3, and maintain the stability of the first pulling part and the stability of the load-bearing wire when being impacted by external force, such as wind force. First tractive piece 11 is for bearing the stronger line insulator of pulling force, and 11 surface cladding of first tractive piece have a silicon rubber full skirt, can strengthen self resistant dirty formation and prevent corrosion and ageing, last stable provide the pulling force. Of course, in other embodiments, the first pulling member 11 is connected to other positions of the first insulating cross arm 3, such as the middle of the cross arm, the position near the first hanging end 31, etc., and only needs to achieve the function of mechanical pulling, which is not limited herein.
The second pulling element 21 is substantially identical to the first pulling element 11, except that the second pulling element 21 provides a pulling force for the second insulating cross arm 4. The first pulling part and the second pulling part in the embodiment are both line insulators.
The first support 1 and the second support 2 in the present embodiment may be poles or lattice supports.
The double-circuit tower in the embodiment can improve the stress strength of the first insulating cross arm 3 and the second insulating cross arm 4 and the stability of the transmission wire support through the arrangement of the first traction piece 11 and the second traction piece 21.
The third embodiment of the present invention is an optimization of the dual-circuit tower in the first embodiment or the second embodiment, and the main improvement lies in that, in the third embodiment, as shown in fig. 4 and fig. 5, the first supporting member 1 and the second supporting member 2 are lattice-type supporting members, the dual-circuit tower further includes a third insulating cross arm 6 and a fourth insulating cross arm, the cross sections of the lattice-type first supporting member 1 and the lattice-type second supporting member 2 are rectangular, one end of the third insulating cross arm 6 is connected to the first supporting member 1, the first insulating cross arm 3 and the third insulating cross arm 6 are respectively connected to the adjacent edges of the first supporting member 1, and the other end of the third insulating cross arm 6 is connected to the other end of the first insulating cross arm 3, so as to form a V-shaped first column structure; one end of the first pillar structure away from the first supporting member 1 is a first hanging end 31 for hanging a first wire. The V-shaped first support structure and the first support member form a triangular structure, so that the structure is more stable, and the transmission lead can be more stably supported.
One end of a fourth insulating cross arm is connected to the second supporting piece 2, the second insulating cross arm 4 and the fourth insulating cross arm are respectively connected to the adjacent edges of the second supporting piece 2, and the other end of the fourth insulating cross arm is connected with the other end of the second insulating cross arm 4 to form a V-shaped second support column structure. The second pillar structure is symmetrical to the first pillar structure, and one end of the second pillar structure, which is far away from the second supporting member 2, is a second hanging end 41 for hanging a second wire, so that the transmission wire can be supported more stably.
In addition, the first pulling member 11 in this embodiment includes two line insulators, one end of each of the two line insulators is connected to the V-shaped end portion of the first supporting structure, and the other end of each of the two line insulators is connected to two adjacent edges of the first supporting member 1, respectively, so as to form a V-shaped first pulling structure. The second pulling part also comprises two line insulators, one end of the line insulator of the second pulling part 21 is connected to the end part of the second support column structure in the shape of the V, and the other ends of the two line insulators are respectively connected to two adjacent edges of the second support part 2 to form a second pulling structure in the shape of the V. The first hanging wire end 31 is supported and fixed through a first support structure and a first traction structure, and the second hanging wire end 41 is supported and fixed through a second support structure and a second traction structure, so that the stability of the double-loop tower mounting wire is greatly improved. In other embodiments, the first pulling element may also be 1 line insulator or three line insulators, and may be adjusted according to actual needs, which is not limited specifically herein.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A dual circuit tower, comprising:
a first support member;
a second support member;
one end of the first insulating cross arm is fixed on the first supporting piece, the other end of the first insulating cross arm is a first wire hanging end used for arranging a first wire, and the first wire hanging end faces the second supporting piece;
one end of the second insulating cross arm is fixed on the second supporting piece, the other end of the second insulating cross arm is a second wire hanging end used for arranging a second wire, and the second wire hanging end faces the first supporting piece;
the distance between the first wire hanging end and the second wire hanging end is larger than or equal to the safety distance of the first wire relative to the second wire.
2. The dual circuit tower of claim 1, further comprising a connector that fixedly connects the first support member and the second support member.
3. The dual-circuit tower of claim 2, wherein both ends of the connecting member are fixedly connected to the top of the first support member and the top of the second support member, respectively.
4. The dual circuit tower of claim 1, wherein the first support and the second support are both poles.
5. The double-circuit tower as claimed in claim 1, wherein the first supporting member is provided with three first insulating cross arms, three first wires are respectively hung on the first wire hanging ends of the three first insulating cross arms, and the three first insulating cross arms are arranged at intervals of a predetermined distance; the second support piece is provided with three second insulating cross arms, three second wires are hung on second wire hanging ends of the three second insulating cross arms respectively, the three second insulating cross arms are arranged at intervals of the preset distance, and the preset distance is a safety distance between three phases of the first wires and/or a safety distance between three phases of the second wires.
6. The double-circuit tower as claimed in claim 1, wherein the first supporting member is provided with a first pulling member, one end of the first pulling member is fixed on the first supporting member, the other end of the first pulling member is connected with the first insulating cross arm, and the first pulling member is an insulating member and is located above the first insulating cross arm.
7. The dual circuit tower of claim 6, wherein the first pulling member is a line insulator.
8. The dual circuit tower of claim 7, wherein the first support and the second support are lattice supports.
9. The dual-circuit tower as claimed in claim 8, further comprising a third insulating cross arm and a fourth insulating cross arm, wherein the cross section of the lattice-type supporting member is rectangular, one end of the third insulating cross arm is connected to the first supporting member, the first insulating cross arm and the third insulating cross arm are respectively connected to adjacent edges of the first supporting member, and the other end of the third insulating cross arm is connected to the other end of the first insulating cross arm to form a V-shaped first supporting column structure;
one end of the fourth insulating cross arm is connected to the second supporting piece, the second insulating cross arm and the fourth insulating cross arm are respectively connected to the adjacent edges of the second supporting piece, and the other end of the fourth insulating cross arm is connected with the other end of the second insulating cross arm to form a V-shaped second support column structure.
10. The dual-circuit tower as claimed in claim 9, wherein the first pulling member comprises two line insulators, one end of each of the two line insulators is connected to the V-shaped end of the first supporting structure, and the other end of each of the two line insulators is connected to two adjacent edges of the first supporting member, so as to form a V-shaped first pulling structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922074058.1U CN211647529U (en) | 2019-11-27 | 2019-11-27 | Double-loop tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922074058.1U CN211647529U (en) | 2019-11-27 | 2019-11-27 | Double-loop tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211647529U true CN211647529U (en) | 2020-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922074058.1U Active CN211647529U (en) | 2019-11-27 | 2019-11-27 | Double-loop tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211647529U (en) |
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2019
- 2019-11-27 CN CN201922074058.1U patent/CN211647529U/en active Active
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