CN205502701U - 750kV and 330kV thoughtlessly press 0~20 angle tower in four return circuits - Google Patents

Abstract

A 750kV and 330kV mixed-voltage four-circuit 0°-20° corner tower, including a 750kV conductor crossarm arranged on the upper floor and a 330kV conductor crossarm arranged on the lower floor; the 750kV conductor crossarm is arranged sequentially on the tower body from top to bottom The first upper conductor cross-arm, the first middle conductor cross-arm and the first lower conductor cross-arm, the 330kV conductor cross-arm includes the second upper conductor cross-arm and the second middle conductor cross-arm arranged on the tower from top to bottom And the second lower conductor cross arm, each conductor cross arm is symmetrically arranged on both sides of the tower body; the ground wire cross arm is arranged on the top of the tower body, and the ground wire hanging point is symmetrically arranged on the top of the ground wire cross arm with respect to the central axis of the tower body The two sides of each wire cross-arm are symmetrically provided with wire hanging points about the central axis of the tower body; the end of the wire cross-arm is also provided with a jumper cross-arm, and the end of the jumper cross-arm is provided with a jumper hole for installing a jumper string . The utility model occupies less land and has obvious economic benefits.

Description

750kV and 330kV mixed voltage four-circuit 0°～20° corner tower

technical field

The utility model relates to a high-voltage iron tower, in particular to a 750kV and 330kV mixed voltage four-circuit 0°-20° corner tower.

Background technique

As the country promotes urbanization, the line corridors in urban planning areas and suburban areas are increasingly tense. In order to reduce the land occupation of line corridors and house demolition, but also to improve the transmission power of 750kV lines and the stability of the power grid, improve the electromagnetic environment, and reduce the unit In order to reduce the cost of capacity transmission, research on the design of 750kV and 330kV mixed voltage four-circuit transmission lines on the same tower is carried out.

Utility model content

The purpose of this utility model is to solve the above-mentioned problems in the prior art, to provide a 750kV and 330kV mixed pressure four-circuit 0°～20° corner tower with simple structure and low cost, which saves corridors and reserved line paths, and reduces engineering Demolition and investment.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: it includes a 750kV wire cross arm arranged on the upper layer and a 330kV wire cross arm arranged on the lower layer; The first upper conductor cross-arm, the first middle conductor cross-arm and the first lower conductor cross-arm, the 330kV conductor cross-arm includes the second upper conductor cross-arm, the second middle conductor The conductor cross-arm and the second lower conductor cross-arm, each conductor cross-arm is symmetrically arranged on both sides of the tower body; the ground wire cross-arm is arranged on the top of the tower body, and the top of the ground wire cross-arm is symmetrically arranged with respect to the central axis of the tower body. Wire hanging points, the two sides of each wire cross arm are symmetrically provided with wire hanging points about the central axis of the tower; the end of the wire cross arm is also provided with a jumper cross arm, and the end of the jumper cross arm is provided with a Jumper holes for wire strings.

The top plane of the ground wire cross-arm is rectangular, and the width of the end opening is 2.7m; The widths are 3.6m, 5.1m, and 6.5m respectively; the bottom plane of the conductor crossarm on the left and right sides of the second upper conductor crossarm, the second middle conductor crossarm and the second lower conductor crossarm is rectangular on the left side of the tower body. The right side of the tower body is trapezoidal. The opening widths of the left and right ends of the second upper conductor cross arm are 8.0m and 4.0m respectively. The mouth widths of the left and right sides of the two lower conductor cross-arms are 10.0m and 5.0m respectively.

The wire hanging point of the 750kV wire cross-arm adopts the trunnion type hanging plate, and the wire hanging point of the 330kV wire cross-arm adopts the U-shaped hanging ring.

The ground wire hanging point is symmetrically arranged on the ground wire cross arm at a distance of 15.6m from the central axis of the tower body;

The wire hanging points of the first upper wire cross arm are double hanging points, which are respectively 11.78m and 0.64m away from the central axis of the tower body;

The wire hanging points of the first middle conductor cross arm are double hanging points, which are 12.48m and 0.64m away from the central axis of the tower body respectively;

The wire hanging points of the first lower wire cross arm are double hanging points, which are respectively 10.65m and 0.7m away from the central axis of the tower body;

The wire hanging points of the second upper wire cross arm are double hanging points, which are respectively 10.65m and 0.7m away from the central axis of the tower body;

The wire hanging points of the second middle conductor cross arm are double hanging points, which are respectively 12.95m and 0.7m away from the central axis of the tower body;

The wire hanging points of the second lower wire cross arm are double hanging points, which are 11.15m and 0.7m away from the central axis of the tower body respectively.

The tower body is provided with a slope change point 6.1m below the connection with the second lower conductor cross arm.

The total length of the ground cross-arm is 31.2m, the vertical height of the connection between the ground cross-arm and the tower body is 4.1m, the end of the ground cross-arm is pointed, and the angle between the ends of the cross-arm is 20 °;

The total length of the first upper conductor cross-arm is 24.84m, the vertical height of the connection between the first upper conductor cross-arm and the tower body is 3.5m, the cross-arm end of the first upper conductor cross-arm is pointed, and the cross-arm end clamp The angle is 20°;

The total length of the cross-arm of the first medium conductor is 26.24m, the vertical height of the connection between the cross-arm of the first medium conductor and the tower body is 4.5m, the end of the cross-arm of the first medium conductor is pointed, and the clamp at the end of the cross-arm The angle is 25°;

The total length of the cross arm of the first lower conductor is 27.64m, the vertical height of the connection between the cross arm of the first lower conductor and the tower body is 3.55m, the end of the cross arm of the first lower conductor is pointed, and the clamp at the end of the cross arm is The angle is 20°;

The total length of the second upper conductor cross arm is 22.7m, the vertical height of the connection between the second upper conductor cross arm and the tower body is 3.5m, the cross arm end of the second upper conductor cross arm is pointed, and the cross arm end clamp The angle is 28°;

The total length of the cross-arm of the second medium conductor is 27.3m, the vertical height of the connection between the cross-arm of the second medium conductor and the tower body is 3.5m, the end of the cross-arm of the second medium conductor is pointed, and the clamp at the end of the cross-arm The angle is 23°;

The total length of the second lower conductor cross arm is 24.3m, the vertical height of the connection between the second lower conductor cross arm and the tower body is 3.5m, the cross arm end of the second lower conductor cross arm is pointed, and the cross arm end clamp The angle is 28°.

The layer spacing between the ground wire cross-arm and the first upper wire cross-arm is 12.0m; the layer spacing between the first upper wire cross-arm and the first middle wire cross-arm is 16.9m; the first middle wire cross-arm The distance between the pole and the first lower conductor cross arm is 15.95m; the layer spacing between the first lower conductor cross arm and the second upper conductor cross arm is 16.25m; the second upper conductor cross arm and the second middle conductor cross arm The layer spacing between the poles is 10.7m; the distance between the second middle conductor cross-arm and the second lower conductor cross-arm is 10.2m.

The main material and oblique material of the tower body are selected from Q345 steel pipes, the cross arm and other auxiliary materials are selected from Q420, Q345 or Q235 angle steel, and the whole tower is connected by gusset plates, rigid flanges and bolts.

Ladders for tower assembly and maintenance are arranged in sections on the tower body, and the tower legs are connected to the bottom of the tower body.

Compared with the prior art, the utility model sets a 750kV conductor crossarm on the upper layer of the tower body, a 330kV conductor crossarm on the lower layer of the tower body, and a ground wire crossarm on the top of the tower body, so that the construction of multi-circuit transmission lines on the same tower can reduce the number of lines Corridors, to avoid conflicts with local planning, can be used in places where path corridors are tight and large areas of house demolition are required. Although the weight of the tower itself is higher than that of conventional iron towers, the tower can effectively reduce the land occupation. The use of four-circuit power transmission on the same tower not only saves the total investment of the project, but also has obvious economic and social benefits. Broad application prospects, can be popularized.

Description of drawings

The overall structure schematic diagram of Fig. 1 the utility model;

In the attached drawings: 1. Tower body; 2. Ground wire cross arm; 3. First upper wire cross arm; 4. First middle wire cross arm; 5. First lower wire cross arm; 6. Second upper wire cross arm 7. The second middle conductor cross arm; 8. The second lower conductor cross arm; 9. The slope change; 10. The tower leg.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Referring to Fig. 1, the utility model comprises a tower body 1, a ground wire cross arm 2, a first upper wire cross arm 3, a first middle wire cross arm 4, a first lower wire cross arm 5, a second upper wire cross arm Bear 6, the second middle conductor cross arm 7, the second lower conductor cross arm 8, the slope change place 9, the tower leg 10. The ground wire cross arm 2 is symmetrically arranged above the first upper wire cross arm 3 at the top of the tower body 1, including two branches, which are respectively located on the left and right sides of the tower body 1; the top of the ground wire cross arm 2 is provided with a ground wire hanging point , used to hang the ground wire, which protects the conductor; the distance from the outermost ends of the two branches of the ground wire cross arm 2 to the central axis of the tower body 1 is 15.6m, and the height of the ground wire cross arm 2 is 4.1m. 750kV and 330kV upper conductor crossarms, middle conductor crossarms and lower conductor crossarms are all equipped with conductor hanging points at the bottom. The 750kV conductor hanging points use trunnion hanging plate (GD) type, and the 330kV conductor hanging points use U-shaped hanging rings .

The lightning protection of the tower should not be greater than 0° protection as required by the code, and is further optimized to a negative protection angle.

The first upper wire cross arm 3 is used to suspend two-phase power transmission wires and meet the requirements of electrical clearance. The total length of the cross arm is 24.84m, including the left cross arm, the right cross arm, and the tower body connected to the cross arm. Excluding the width of the tower body, the length of each side of the left and right cross arm is 10.4m. The left and right sides of the tower head extend horizontally and maintain symmetry. The vertical height of the connection between the root of the cross arm and the tower body is 3.0m. , 0.875m high;

The first middle conductor cross arm 4 is used to suspend two-phase power transmission conductors and meet the requirements of electrical clearance. The total length of the cross arm is 26.24m, including the left cross arm, the right cross arm, and the tower body connected to the cross arm. Excluding the width of the tower body, the length of each side of the left and right cross arms is 10.4m. The left and right sides of the head extend horizontally and maintain symmetry. The vertical height of the connection between the root of the cross arm and the tower body is 4.5m, the shape of the top is pointed, and the included angle is 25°. 0.9m high;

The first lower conductor cross arm 5 is used for suspending two-phase power transmission conductors and meets the requirements of electrical clearance. The total length of the cross arm is 27.64m, including the left cross arm, the right cross arm, and the tower body connected to the cross arm. Excluding the width of the tower body, the length of each side of the left and right cross arms is 10.4m. The left and right sides of the head extend horizontally and maintain symmetry. The vertical height of the connection between the root of the cross arm and the tower body is 3.55m, the shape of the top is pointed, and the included angle is 20°. 0.9m high;

The second upper conductor cross arm 6 is used to suspend two-phase power transmission conductors and meet the requirements of electrical clearance. The total length of the cross arm is 22.7m, including the left cross arm, the right cross arm, and the tower body connected to the cross arm. Excluding the width of the tower body, the length of each side of the left and right cross arm is 7.3m. The left and right sides of the head extend horizontally and maintain symmetry. The vertical height of the connection between the root of the cross arm and the tower body is 3.5m, the shape of the top is pointed, and the included angle is 28°. 0.875m high;

The second middle conductor cross arm 7 is used for suspending two-phase power transmission conductors, and meets the requirement of electric clearance. The total length of the cross arm is 27.3m, including the left cross arm, the right cross arm, and the tower body connected to the cross arm. Excluding the width of the tower body, the length of each side of the left and right cross arms is 9.1m. The left and right sides of the head extend horizontally and maintain symmetry. The vertical height of the connection between the root of the cross arm and the tower body is 3.5m, the shape of the top is pointed, and the angle is 23°. 0.7m high;

The second lower wire cross arm 8 is used for suspending the two-phase power transmission wires and meets the requirements of electrical clearance. The total length of the cross arm is 24.3m, including the left cross arm, the right cross arm, and the tower body connected to the cross arm. Excluding the width of the tower body, the length of each side of the left and right cross arms is 7.2m. The left and right sides of the head extend horizontally and maintain symmetry. The vertical height of the connection between the root of the cross arm and the tower body is 3.5m, the shape of the top is pointed, and the included angle is 28°. 0.875m high;

The layer spacing between the ground wire cross arm 2 and the first upper wire cross arm 3 is 12.0m; the layer spacing between the first upper wire cross arm 3 and the first middle wire cross arm 4 is 16.9m; the first middle wire The layer spacing between the cross-arm 4 and the first lower conductor cross-arm 5 is 15.95m; the layer spacing between the first lower conductor cross-arm 5 and the second upper conductor cross-arm 6 is 16.25m; the second upper conductor cross-arm The layer spacing between 6 and the second middle conductor cross arm 7 is 10.7m; the layer spacing between the second middle conductor cross arm 7 and the second lower conductor cross arm 8 is 10.2m.

The slope change point 9 of the tower body 1 is 6.1m away from the connection point between the 330kV second lower conductor cross arm 8 and the tower body 1. Reasonable selection of the slope change point position can effectively save materials and facilitate installation. A tower leg 10 is connected to the bottom of the tower body 1 .

The straight line tower of the utility model adopts anti-loosening measures of the double cap bolts of the whole tower, which reduces the workload of maintenance personnel and improves the safety of line operation at the same time.

The basic design wind speed of this utility model is 27m/s, the designed ice-coated wire is 10mm, the ground wire is 15mm, the height of the iron tower is 27.0m, and the root of the iron tower is 18.86m. The cross arms of each layer are symmetrically arranged on the left and right sides of the tower body, and are connected with the tower body, and the tower body is connected with the tower legs. The main material and cross inclined materials of the tower body are made of Q345 steel pipes, and the cross arms and auxiliary materials are made of ordinary angle steel.

The utility model can reduce line corridors and avoid conflicts with local planning. It can be used in places where the route corridors are tense and large areas of houses need to be demolished, thereby saving precious land resources in the city, not only saving the total investment of the project, but also having obvious economic benefits and social benefits. Significantly, it has broad application prospects in urbanization construction and can be popularized.

Claims (9)

1. 0 °～20 ° of 750kV Yu a 330kV mixed pressure four loop angle tower, it is characterised in that: include being arranged on upper strata 750kV wire cross-arm and be arranged on the 330kV wire cross-arm of lower floor；Described 750kV wire cross-arm includes from top to bottom depending on Secondary be arranged on tower body (1) the first upper conductor cross-arm (3), wire cross-arm (4) and the first lower wire cross-arm (5) in first, The second upper conductor cross-arm (6) that described 330kV wire cross-arm includes from top to bottom being successively set on tower body (1), second Middle wire cross-arm (7) and the second lower wire cross-arm (8), each wire cross-arm is all symmetricly set on the both sides of tower body (1)； Tower body (1) top is provided with ground wire cross-arm (2), and ground wire cross-arm (2) top is arranged with ground about the axis of tower body (1) Line hanging point, each wire cross-arm both sides are arranged with conducting wire hanging point about the axis of tower body (1)；Described wire cross arm end Being additionally provided with wire jumper cross-arm, wire jumper cross arm end offers the jumper hole for installing jumper string.

0 °～20 ° of 750kV Yu 330kV mixed pressure four loop the most according to claim 1 angle tower, it is characterised in that: Described ground wire cross-arm (2) top planes is rectangle, a width of 2.7m of end mouth；First upper conductor cross-arm (3), lead in first The base plane of line cross-arm (4) and the first lower wire cross-arm (5) is shaped as rectangle, end mouth wide be respectively 3.6m, 5.1m, 6.5m；Second upper conductor cross-arm (6), wire cross-arm (7) and second lower wire cross-arm (8) left and right sides leads in second Line cross-arm base plane is rectangle in tower body (1) left side, is trapezoidal on tower body (1) right side, and the second upper conductor cross-arm (6) End, left and right sides mouth wide be respectively 8.0m, 4.0m, in second end, the left and right sides mouth of wire cross-arm (7) wide be respectively 9.0m, 4.5m, end, the left and right sides mouth of the second lower wire cross-arm (8) is wide is respectively 10.0m, 5.0m.

0 °～20 ° of 750kV Yu 330kV mixed pressure four loop the most according to claim 1 angle tower, it is characterised in that: The conducting wire hanging point of described 750kV wire cross-arm selects gudgeon type link plate, and the conducting wire hanging point of 330kV wire cross-arm selects U-shaped link.

0 °～20 ° of 750kV Yu 330kV mixed pressure four loop the most according to claim 1 angle tower, it is characterised in that: Described ground wire hanging point is symmetricly set at the axis 15.6m of the upper distance tower body (1) of ground wire cross-arm (2)；

The conducting wire hanging point of the first upper conductor cross-arm (3) is double hanging point, respectively axis 11.78m and 0.64m of distance tower body (1)；

In first, the conducting wire hanging point of wire cross-arm (4) is double hanging point, respectively axis 12.48m and 0.64m of distance tower body (1)；

The conducting wire hanging point of the first lower wire cross-arm (5) is double hanging point, respectively axis 10.65m and 0.7m of distance tower body (1)；

The conducting wire hanging point of the second upper conductor cross-arm (6) is double hanging point, respectively axis 10.65m and 0.7m of distance tower body (1)；

In second, the conducting wire hanging point of wire cross-arm (7) is double hanging point, respectively axis 12.95m and 0.7m of distance tower body (1)；

The conducting wire hanging point of the second lower wire cross-arm (8) is double hanging point, respectively axis 11.15m and 0.7m of distance tower body (1).

0 °～20 ° of 750kV Yu 330kV mixed pressure four loop the most according to claim 1 angle tower, it is characterised in that: Described tower body (1) with the second lower wire cross-arm (8) junction below the position of 6.1m be provided with at change slope (9).

0 °～20 ° of 750kV Yu 330kV mixed pressure four loop the most according to claim 1 angle tower, it is characterised in that: The overall length of described ground wire cross-arm (2) is 31.2m, and ground wire cross-arm (2) is 4.1m with the vertical height of tower body (1) junction, The cross-arm termination of ground wire cross-arm (2) is pointed, and cross-arm-end head-clamp angle is 20 °；

The overall length of the first upper conductor cross-arm (3) is 24.84m, and the first upper conductor cross-arm (3) hangs down with tower body (1) junction Straight height is 3.5m, and the cross-arm termination of the first upper conductor cross-arm (3) is pointed, and cross-arm-end head-clamp angle is 20 °；

In first, the overall length of wire cross-arm (4) is 26.24m, and in first, wire cross-arm (4) and tower body (1) junction hangs down Straight height is 4.5m, and in first, the cross-arm termination of wire cross-arm (4) is pointed, and cross-arm-end head-clamp angle is 25 °；

The overall length of the first lower wire cross-arm (5) is 27.64m, and the first lower wire cross-arm (5) hangs down with tower body (1) junction Straight height is 3.55m, and the cross-arm termination of the first lower wire cross-arm (5) is pointed, and cross-arm-end head-clamp angle is 20 °；

The overall length of the second upper conductor cross-arm (6) is 22.7m, and the second upper conductor cross-arm (6) is vertical with tower body (1) junction Being highly 3.5m, the cross-arm termination of the second upper conductor cross-arm (6) is pointed, and cross-arm-end head-clamp angle is 28 °；

In second, the overall length of wire cross-arm (7) is 27.3m, and in second, wire cross-arm (7) is vertical with tower body (1) junction Being highly 3.5m, in second, the cross-arm termination of wire cross-arm (7) is pointed, and cross-arm-end head-clamp angle is 23 °；

The overall length of the second lower wire cross-arm (8) is 24.3m, and the second lower wire cross-arm (8) is vertical with tower body (1) junction Being highly 3.5m, the cross-arm termination of the second lower wire cross-arm (8) is pointed, and cross-arm-end head-clamp angle is 28 °.

0 °～20 ° of 750kV Yu 330kV mixed pressure four loop the most according to claim 1 angle tower, it is characterised in that: Interlamellar spacing between described ground wire cross-arm (2) and the first upper conductor cross-arm (3) is 12.0m；First upper conductor cross-arm (3) And the interlamellar spacing between wire cross-arm (4) is 16.9m in first；Wire cross-arm (4) and the first lower wire cross-arm (5) in first Between spacing be 15.95m；Interlamellar spacing between first lower wire cross-arm (5) and the second upper conductor cross-arm (6) is 16.25m； In second upper conductor cross-arm (6) and second, the interlamellar spacing between wire cross-arm (7) is 10.7m；Wire cross-arm (7) in second And the spacing between the second lower wire cross-arm (8) is 10.2m.

0 °～20 ° of 750kV Yu 330kV mixed pressure four loop the most according to claim 1 angle tower, it is characterised in that: Described tower body (1) main material and tiltedly material select Q345 steel pipe, cross-arm and other auxiliary material to select Q420, Q345 or Q235 angle Steel, full tower uses gusset plate, rigid flange and bolt to be connected by each component.

9., according to 0 °～20 ° of 750kV Yu 330kV mixed pressure four loop described in claim 1 or 8 angle tower, its feature exists In: the upper step-by-step arrangement of described tower body (1) has for carrying out organizing tower and the cat ladder of maintenance, and tower body (1) bottom connects tower leg (10).