CN213015677U - Large-corner iron tower of same-tower double-circuit overhead transmission line - Google Patents
Large-corner iron tower of same-tower double-circuit overhead transmission line Download PDFInfo
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- CN213015677U CN213015677U CN202021350390.2U CN202021350390U CN213015677U CN 213015677 U CN213015677 U CN 213015677U CN 202021350390 U CN202021350390 U CN 202021350390U CN 213015677 U CN213015677 U CN 213015677U
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Abstract
The utility model relates to a transmission line iron tower field discloses an iron tower that can realize same tower double circuit overhead transmission line wide-angle corner. This big corner iron tower includes the body of the tower, be provided with corner cross arm group on the body of the tower, corner cross arm group is including interior angle side wire cross arm, outer angle side wire jumper cross arm and outer angle side wire cross arm, outer angle side wire cross arm is connected in the body of the tower left and right sides, interior angle side wire cross arm and outer angle side wire jumper cross arm are connected respectively in the front and back both sides of body of the tower, outer angle side wire jumper cross arm is provided with the wire jumper structure. In the large-corner iron tower, the jumper wire cross arm at the outer corner side is under small stress and only bears vertical load in the vertical direction; and outer angle side wire cross arm and interior angle side wire cross arm are connected with the body of the tower, and compact structure, whole symmetry is high, and stability is higher, and the atress mode is clear reliable, and node simple structure can effectively reduce the design and the construction degree of difficulty, reduces engineering cost.
Description
Technical Field
The utility model relates to a transmission line iron tower field specifically is an iron tower that can realize same tower double circuit overhead transmission line wide-angle corner.
Background
At present, the angle tower of the power transmission line is usually designed according to the grades of 0-20 degrees, 20-40 degrees, 40-60 degrees and 60-90 degrees. The design of the corner specifications can only meet the requirements of conventional engineering, and under special conditions, due to the limitation of line trend and geographic conditions, the condition of an oversized corner often appears. The conventional thought is to turn the corner for many times in the routing process of the path, and the large-angle corner is split into a plurality of corners within 90 degrees. The mode needs a large number of corner towers, and has large consumption of corresponding tower materials and occupied area and poor economical efficiency. Meanwhile, in a section with a limited path, such as a hydropower station outlet position or a section with poor geological conditions, a plurality of tower positions may not be available, so that the mode of splitting a large corner of more than 90 degrees into a plurality of small-corner towers is not feasible under special conditions, and the feasibility of a line path scheme is influenced. Therefore, a double-loop large-corner iron tower with stronger adaptability needs to be designed, the requirements on electrical clearance and structural strength under the condition of large corners are met, and the actual existing engineering problems are solved.
The patent application with the publication number of CN204920403U discloses a transmission line double-loop chamfering tower, which is characterized in that an inner angle side ground wire cross arm, an inner angle side upper phase cross arm, an inner angle side middle phase cross arm and an inner angle side lower phase cross arm are sequentially installed on an inner angle side of a tower body from top to bottom, an outer angle side upper phase cross arm, an outer angle side middle phase cross arm and an outer angle side lower phase cross arm are sequentially installed on an outer angle side of the tower body from top to bottom, and the outer angle side ground wire cross arm, the outer angle side upper phase cross arm, the outer angle side middle phase cross arm and the outer angle side lower phase cross arm are T-shaped cross arms. The corner allowed by the chamfering tower can reach 90-150 degrees. But the lead and the jumper wire share one T-shaped support cross arm, the tail end of the T-shaped support is connected with the main material of the iron tower, and the T-shaped support cross arm directly bears the lead tension and the vertical load on two sides, so that the stress is larger, and the force transmission mode is more complex; in addition, the outer corner side wire cross arm and the outer corner side wire cross arm are positioned on the same horizontal plane, the electrical clearance can be controlled only by increasing the length of the outer end of the T-shaped support, but the increase of the length of the outer end of the T-shaped support undoubtedly reduces the overall stability of the iron tower.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a big corner iron tower of overhead transmission line of same tower double circuit that compact structure, atress are more reasonable is provided.
The utility model discloses a big corner iron tower of double circuit overhead transmission line on tower, including the body of the tower, be provided with corner cross arm group on the body of the tower, corner cross arm group is including interior angle side wire cross arm, outer angle side wire jumper cross arm and outer angle side wire cross arm, outer angle side wire cross arm is connected in the body of the tower left and right sides, interior angle side wire cross arm and outer angle side wire jumper cross arm are connected in the front and back both sides of body of the tower respectively, outer angle side wire jumper cross arm is provided with the wire jumper structure.
Preferably, the outer corner side jumper wire cross arms and the outer corner side wire cross arms are symmetrically connected to the front side and the rear side of the tower body, and the outer corner side wire cross arms are symmetrically connected to the left side and the right side of the tower body.
Preferably, the horizontal included angle between the inner corner side wire cross arm and the outer corner side wire cross arm is 90 °.
Preferably, the inner corner side and outer corner side wire cross arms are arranged in layers.
Preferably, the inner corner side wire cross arm and the outer corner side jumper cross arm are located above the inner corner side wire cross arm.
Preferably, the jumper structure comprises a jumper string and a support tube, the jumper string is connected to the bottom of the outer corner side jumper cross arm, and the support tube is connected to the lower end of the jumper string.
Preferably, the corner cross arm group comprises an upper phase cross arm group, a middle phase cross arm group and a lower phase cross arm group, and the upper phase cross arm group, the middle phase cross arm group and the lower phase cross arm group are all provided with an inner angle side wire cross arm, an outer angle side wire jumper cross arm and an outer angle side wire cross arm.
Preferably, an inner corner side ground wire support and an outer corner side ground wire support are respectively arranged on the front side and the rear side of the top of the tower body, the inner corner side ground wire support and the inner corner side ground wire cross arm are located on the same side, and the outer corner side ground wire support is of a T-shaped structure.
The utility model has the advantages that: in the large-corner iron tower, the jumper wire cross arm at the outer corner side is under small stress and only bears vertical load in the vertical direction; and outer angle side wire cross arm and interior angle side wire cross arm are connected with the body of the tower, and compact structure, whole symmetry is high, and stability is higher, and the atress mode is clear reliable, and node simple structure can effectively reduce the design and the construction degree of difficulty, reduces engineering cost.
Drawings
Fig. 1 is a schematic three-dimensional structure diagram of the large-corner iron tower of the present invention;
fig. 2 is a front view of a large-corner iron tower;
fig. 3 is a side view of a large-corner iron tower;
fig. 4 is a schematic diagram of installation of a ground wire of a large-corner iron tower.
Reference numerals:
the device comprises an upper phase cross arm group 1, a middle phase cross arm group 2, a lower phase cross arm group 3, an outer corner side jumper cross arm 4, an outer corner side lead cross arm 5, an inner corner side lead cross arm 6, an outer corner side ground wire support 7, an inner corner side ground wire support 8, a tower body 9, an outer corner side lead wire 10, an inner corner side lead wire 11, an inner corner side ground wire 12, an outer corner side ground wire 13, a jumper string 14, a supporting tube 15 and a strain insulator string 16.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
The utility model discloses a big corner iron tower of double circuit overhead transmission line on tower, including body of the tower 9, be provided with corner cross arm group on the body of the tower 9, corner cross arm group includes interior angle side wire cross arm 6, outer angle side wire jumper cross arm 4 and outer angle side wire cross arm 5, outer angle side wire cross arm 5 is connected in the body of the tower 9 left and right sides, interior angle side wire cross arm 6 and outer angle side wire jumper cross arm 4 connect respectively in both sides around body of the tower 9, outer angle side wire jumper cross arm 4 is provided with the wire jumper structure.
The specific number of corner cross arm groups depends on the number of wires, for example, three-phase wires are provided in the embodiment of fig. 1, and thus the corner cross arm group of this embodiment includes an upper phase cross arm group 1, a middle phase cross arm group 2, and a lower phase cross arm group 3, and the upper phase cross arm group 1, the middle phase cross arm group 2, and the lower phase cross arm group 3 are each provided with an inner corner side wire cross arm 6, an outer corner side wire jumper cross arm 4, and an outer corner side wire cross arm 5. As shown in fig. 4, taking a middle phase conductor as an example, an outer corner side conductor 10 is connected with an outer corner side conductor cross arm 5 on one side through a strain insulator string 16, and the conductor is connected with the outer corner side conductor 10 on the outer corner side conductor cross arm 5 on the other side by installing a drainage wire on a jumper structure of the outer corner side conductor cross arm 4, so as to realize a large-angle corner; the inner angle side wires 11 of the iron tower inlet and outlet are connected to two sides of the inner angle side wire cross arm 6 through strain insulator strings 16 respectively and are connected and conducted in a bridging mode through drainage wires, and therefore the large-angle corner of the inner angle side wires 11 is achieved. Other cross arm groups are similarly provided with wires.
In order to increase the overall stability of the iron tower, as shown in fig. 2 and 3, the outer corner side jumper cross arms 4 and the outer corner side jumper cross arms 5 are symmetrically connected to the front and rear sides of the tower body 9, and the outer corner side jumper cross arms 5 are symmetrically connected to the left and right sides of the tower body 9. Therefore, the iron tower has better symmetry, and is beneficial to processing and assembling iron tower components. In addition, the horizontal included angle between the inner corner side guide wire cross arm 6 and the outer corner side guide wire cross arm 5 is preferably 90 degrees, so that the periphery of the iron tower is more symmetrical, and the left and right distances between the inner corner side guide wire 11 and the outer corner side guide wire 10 are equal.
The inner corner side and outer corner side wire cross arms 6 and 5 may be located on the same horizontal plane, but this is not conducive to control of the electrical gap, so that preferably the inner corner side and outer corner side wire cross arms 6 and 5 are arranged in staggered layers, i.e. the inner corner side and outer corner side wire cross arms 6 and 5 are located on different horizontal planes, which may indirectly increase the wire spacing between the loops. Specifically, the inner corner side wire cross arm 6 may be above or below the outer corner side wire cross arm 5 in the same group, and as in the embodiment shown in fig. 4, the inner corner side wire cross arm 6 and the outer corner side jumper cross arm 4 are located above the inner corner side wire cross arm 6.
The jumper structure provided on the outer corner side jumper cross arm 4 may refer to the existing jumper string 14 and the like, and in this embodiment, the jumper structure includes a jumper string 14 and a support pipe 15, the jumper string 14 is connected to the bottom of the outer corner side jumper cross arm 4, and the support pipe 15 is connected to the lower end of the jumper string 14. The drainage wire passes through stay tube 15 and realizes the wire jumper, does not have the wire jumper sag, and the length is adjusted in a flexible way moreover, and the electric clearance is controlled easily. Besides the jumper structure arranged on the outer corner side jumper cross arm 4, the jumper string 14 can be arranged on the rear side of the outer corner side wire cross arm 5 so as to facilitate installation of drainage wires.
In addition to three-phase wires, a ground wire and a zero wire may be provided in the loop, in the embodiment shown in fig. 1, an inner angle side ground wire bracket 8 and an outer angle side ground wire bracket 7 are respectively provided at the front side and the rear side of the top of the tower 9, the inner angle side ground wire bracket 8 and the inner angle side ground wire cross arm 6 are located at the same side, and the outer angle side ground wire bracket 7 is a T-shaped structure. The inner corner side ground wire 12 is turned by the inner corner side ground wire holder 8, and the outer corner side ground wire holder 7 is turned by the outer corner side ground wire holder 7 of the T-shaped structure. The inner corner side ground wire support 8 and the outer corner side ground wire support 7 are arranged on the same layer, and the upper phase cross arm group 1, the middle phase cross arm group 2 and the lower phase cross arm group 3 are 7 layers in total.
Claims (8)
1. Big corner iron tower of double circuit overhead transmission line on tower, including body of the tower (9), its characterized in that, be provided with corner cross arm group on body of the tower (9), corner cross arm group is including interior angle side wire cross arm (6), outer angle side wire jumper cross arm (4) and outer angle side wire cross arm (5), outer angle side wire cross arm (5) are connected in the body of the tower (9) left and right sides, both sides around body of the tower (9) are connected respectively in interior angle side wire cross arm (6) and outer angle side wire jumper cross arm (4), outer angle side wire jumper cross arm (4) are provided with the wire jumper structure.
2. The same-tower double-circuit overhead transmission line large-corner iron tower of claim 1, characterized in that: outer angle side wire jumper cross arm (4) and outer angle side wire guide cross arm (5) symmetric connection are in the front and back both sides of body of the tower (9), outer angle side wire guide cross arm (5) symmetric connection is in the body of the tower (9) left and right sides.
3. The same-tower double-circuit overhead transmission line large-corner iron tower of claim 1 or 2, characterized in that: the horizontal included angle between the inner angle side guide wire cross arm (6) and the outer angle side guide wire cross arm (5) is 90 degrees.
4. The same-tower double-circuit overhead transmission line large-corner iron tower of claim 1 or 2, characterized in that: the inner angle side wire cross arm (6) and the outer angle side wire cross arm (5) are arranged in a staggered mode.
5. The same-tower double-circuit overhead transmission line large-corner iron tower of claim 4, characterized in that: the inner angle side wire jumper cross arm (6) and the outer angle side wire jumper cross arm (4) are located above the inner angle side wire jumper cross arm (6).
6. The same-tower double-circuit overhead transmission line large-corner iron tower of claim 5, characterized in that: the jumper structure comprises a jumper string (14) and a support pipe (15), wherein the jumper string (14) is connected to the bottom of the outer corner side jumper cross arm (4), and the support pipe (15) is connected to the lower end of the jumper string (14).
7. The same-tower double-circuit overhead transmission line large-corner iron tower of claim 1, characterized in that: corner cross arm group is including last cross arm group (1), well cross arm group (2) and lower cross arm group (3), it all is provided with interior angle side conductor cross arm (6), outer angle side wire jumper cross arm (4) and outer angle side conductor cross arm (5) to go up cross arm group (1), well cross arm group (2) and lower cross arm group (3).
8. The same-tower double-circuit overhead transmission line large-corner iron tower of claim 1, characterized in that: an inner angle side ground wire support (8) and an outer angle side ground wire support (7) are respectively arranged on the front side and the rear side of the top of the tower body (9), the inner angle side ground wire support (8) and the inner angle side ground wire cross arm (6) are located on the same side, and the outer angle side ground wire support (7) is of a T-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021350390.2U CN213015677U (en) | 2020-07-10 | 2020-07-10 | Large-corner iron tower of same-tower double-circuit overhead transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021350390.2U CN213015677U (en) | 2020-07-10 | 2020-07-10 | Large-corner iron tower of same-tower double-circuit overhead transmission line |
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| CN213015677U true CN213015677U (en) | 2021-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021350390.2U Active CN213015677U (en) | 2020-07-10 | 2020-07-10 | Large-corner iron tower of same-tower double-circuit overhead transmission line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115324411A (en) * | 2022-08-05 | 2022-11-11 | 中国三峡新能源(集团)股份有限公司 | Wind-powered electricity generation field 35kV current collection circuit T connects tower |
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2020
- 2020-07-10 CN CN202021350390.2U patent/CN213015677U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115324411A (en) * | 2022-08-05 | 2022-11-11 | 中国三峡新能源(集团)股份有限公司 | Wind-powered electricity generation field 35kV current collection circuit T connects tower |
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