Connecting tower for compact line and conventional line

Abstract

A connecting tower for a compact circuit and a conventional circuit comprises a tower body, a right side ground wire cross arm, a left side ground wire cross arm, a left side wire cross arm, a T-shaped jumper cross arm, a right side upper phase wire cross arm, a right side lower phase wire cross arm and an L-shaped jumper cross arm, and the T-shaped jumper cross arm is arranged at the end of the right side ground wire cross arm and the end of the left side wire cross arm. The L-shaped jumper cross arm is arranged at the end part of the lower-phase lead cross arm at the right side; the front portion and the rear portion of the right side upper phase wire cross arm are respectively provided with a first wire tension string hanging point, the front portion and the rear portion of the left side wire cross arm are respectively provided with a second wire tension string hanging point, the rear side of the middle of the tower body is provided with a third wire tension string hanging point, and the rear side of the right side lower phase wire cross arm is provided with a fourth wire tension string hanging point. By utilizing the strain tower, the strain tower shaped like the Chinese character'gan 'of a compact line and a conventional line can be connected, enough electrical safety distance can be kept, steel of the iron tower is reduced, and engineering investment is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of power transmission and transformation engineering, in particular to a connecting tower for a compact line and a conventional line. Background Art

[0002] When connecting a 500 kV AC compact line to a conventional line, a compact tension tower needs to be connected to a conventional line tension tower. However, since the three-phase conductors of the compact tension tower are arranged in an inverted triangle, while the three-phase conductors of the dry-shaped tension tower commonly used in conventional lines are arranged in a right triangle, when the two types of tension tower conductors are connected, the phase distance between the conductors in the section will be insufficient. Utility Model Content

[0003] The purpose of the utility model is to provide a connecting tower for a compact line and a conventional line. The utility model can be used to connect the dry-type tension towers of the compact line and the conventional line, thereby achieving the purpose of meeting the requirements for the phase-to-phase distance of conductors in the gear.

[0004] To achieve the above-mentioned purpose, the utility model provides a connection tower for a compact line and a conventional line, comprising a tower body, a right ground wire crossarm, a left ground wire crossarm, a left conductor crossarm, a T-type jumper crossarm, a right upper phase conductor crossarm, a right lower phase conductor crossarm, and an L-type jumper crossarm, wherein the T-type jumper crossarm is arranged at the ends of the right ground wire crossarm and the left conductor crossarm, the L-type jumper crossarm is arranged at the end of the right lower phase conductor crossarm, three jumper insulator strings are arranged below the T-type jumper crossarm, and two jumper insulator strings are arranged below the L-type jumper crossarm; a first conductor tension string hanging point is respectively arranged at the front and rear of the right upper phase conductor crossarm, a second conductor tension string hanging point is respectively arranged at the front and rear of the left conductor crossarm, a third conductor tension string hanging point is arranged at the rear side of the middle part of the tower body, and a fourth conductor tension string hanging point is arranged at the front side of the right lower phase conductor crossarm.

[0005] Furthermore, the first wire tension string hanging point and the second wire tension string hanging point are each connected to a wire tension string in front and behind, respectively, and the third wire tension string hanging point and the fourth wire tension string hanging point are also each connected to a wire tension string.

[0006] Furthermore, the three-phase conductors suspended on the first conductor tension string hanging point, the second conductor tension string hanging point and the third conductor tension string hanging point on the rear side of the tower body through the conductor tension string are arranged in an inverted triangle; the three-phase conductors suspended on the first conductor tension string hanging point, the second conductor tension string hanging point and the fourth conductor tension string hanging point on the front side of the tower body through the conductor tension string are arranged in an oblique triangle.

[0007] Furthermore, the fourth conductor tension string hanging point is located to the lower right of the first conductor tension string hanging point, and the horizontal projection distance between the two is not less than 4 meters.

[0008] The utility model connects the dry-type tension towers of compact lines with those of conventional lines through optimized arrangement of the tower body, the left ground wire cross arm, the right ground wire cross arm, the left conductor cross arm, the right upper phase conductor cross arm, the right lower phase conductor cross arm and each conductor tension string hanging point, thereby maintaining a sufficient electrical safety distance, reducing the steel material of the iron tower and saving engineering investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the utility model.

[0010] Figure 2 It is a side view of an application case of the utility model;

[0011] In the figure: 1. tower body; 2. right ground wire cross arm; 3. left ground wire cross arm; 4. left conductor cross arm; 5. T-type jumper cross arm; 6. right upper phase conductor cross arm; 7. right lower phase conductor cross arm; 8. L-type jumper cross arm; 9. first conductor tension string hanging point; 10. second conductor tension string hanging point; 11. third conductor tension string hanging point; 12. fourth conductor tension string hanging point; 13. jumper insulator string; 14. conductor tension string; 15. A-phase conductor; 16. B-phase conductor; 17. C-phase conductor.

[0012] Figure 2 The A-phase conductor, the B-phase conductor and the C-phase conductor are connected from right to left in the forward direction of the line, with a dry-shaped tension tower in front and a connecting tower of the utility model in the back. DETAILED DESCRIPTION

[0013] Reference Figure 1 , Figure 2 The utility model comprises a tower body 1, a right ground wire cross arm 2, a left ground wire cross arm 3, a left conductor cross arm 4, a T-type jumper cross arm 5, a right upper phase conductor cross arm 6, a right lower phase conductor cross arm 7, an L-type jumper cross arm 8, a first conductor tension string hanging point 9, a second conductor tension string hanging point 10, a third conductor tension string hanging point 11, and a fourth conductor tension string hanging point 12. The T-type jumper cross arm 5 is arranged at the end of the right ground wire cross arm 2 and the left conductor cross arm 4, the L-type jumper cross arm is arranged at the end of the right lower phase conductor cross arm 7, three jumper insulator strings 13 are arranged below the T-type jumper cross arm 5, and two jumper insulator strings 13 are arranged below the L-type jumper cross arm 8. The first conductor tension string hanging point 9 is arranged in front and behind the right upper phase conductor cross arm 6, the second conductor tension string hanging point 10 is arranged in front and behind the left conductor cross arm 4, the third conductor tension string hanging point 11 is arranged at the rear side of the middle part of the tower body, and the fourth conductor tension string hanging point 12 is arranged at the front side of the right lower phase conductor cross arm 7. Each conductor tension string hanging point is connected to a conductor tension string 14. The fourth conductor tension string hanging point 12 is located at the lower right of the first conductor tension string hanging point 9, and the horizontal projection distance between the two is not less than 4 meters.

[0014] The B-phase conductor 16 on the rear side of the tower body 1 suspended on the first conductor tension string hanging point 9 through the conductor tension string 14, the A-phase conductor 15 suspended on the second conductor tension string hanging point 10 through the conductor tension string 14, and the C-phase conductor 17 suspended on the third conductor tension string hanging point 11 through the conductor tension string 14 are arranged in an inverted triangle.

[0015] The B-phase conductor 16 on the front side of the tower body 1 suspended on the first conductor tension string hanging point 9 through the conductor tension string 14, the A-phase conductor 15 suspended on the second conductor tension string hanging point 10 through the conductor tension string 14, and the C-phase conductor 17 suspended on the fourth conductor tension string hanging point 12 through the conductor tension string 14 are arranged in an oblique triangle.

[0016] Reference Figure 2 The line advances from right to left. The A-phase conductor 15 is first connected to the conductor tension string 14 fixed on the rear side of the left conductor crossarm 4, then jumps around to the jumper insulator string 13 on the T-type jumper crossarm 5 on the left conductor crossarm 4, and then connected to the conductor tension string 14 fixed on the front side of the left conductor crossarm 4, and then connected to the A phase of the conventional dry-type tension tower.

[0017] The B-phase conductor 16 is first connected to the conductor tension string 14 fixed on the rear side of the right upper phase conductor crossarm 6, and then jumps around to the jumper insulator string 13 on the T-type jumper crossarm 5 on the right ground wire crossarm 2, and then connected to the conductor tension string 14 fixed on the front side of the right upper phase conductor crossarm 6, and then connected to the B phase of the conventional dry-type tension tower.

[0018] The C-phase conductor 17 is first connected to the conductor tension string 14 on the rear side of the tower body 1, then jumps around to the jumper insulator string 13 on the L-shaped jumper crossarm 8, and then connected to the conductor tension string 14 fixed on the front side of the right lower phase conductor crossarm 7, and then connected to the C phase of the conventional dry-type tension tower.

[0019] In summary, the utility model optimizes the arrangement of the tower body, the left ground wire crossarm, the right ground wire crossarm, the left conductor crossarm, the right upper phase conductor crossarm, the right lower phase conductor crossarm and each conductor tension string hanging point, so that the compact line can maintain a sufficient electrical safety distance when connected to the conventional line dry-type tension tower.

Claims

1. A connection tower for a compact line and a conventional line, characterized in that: It includes a tower body, a right ground wire crossarm, a left ground wire crossarm, a left conductor crossarm, a T-type jumper crossarm, a right upper phase conductor crossarm, a right lower phase conductor crossarm, and an L-type jumper crossarm. The T-type jumper crossarm is arranged at the ends of the right ground wire crossarm and the left conductor crossarm, and the L-type jumper crossarm is arranged at the end of the right lower phase conductor crossarm; the front and rear of the right upper phase conductor crossarm are respectively provided with a first conductor tension string hanging point, the front and rear of the left conductor crossarm are respectively provided with a second conductor tension string hanging point, the rear side of the middle part of the tower body is provided with a third conductor tension string hanging point, and the rear side of the right lower phase conductor crossarm is provided with a fourth conductor tension string hanging point.

2. A connection tower for a compact line and a conventional line according to claim 1, characterized in that: The first wire tension string hanging point and the second wire tension string hanging point are each connected to a wire tension string in front and behind, respectively, and the third wire tension string hanging point and the fourth wire tension string hanging point are each also provided with a wire tension string.

3. A connection tower for a compact line and a conventional line according to claim 1, characterized in that: Three jumper insulator strings are arranged under the T-shaped jumper cross arm, and two jumper insulator strings are arranged under the L-shaped jumper cross arm.

4. A connection tower for a compact line and a conventional line according to claim 1, characterized in that: The three-phase conductors suspended on the first conductor tension string hanging point, the second conductor tension string hanging point and the third conductor tension string hanging point on the rear side of the tower body through the conductor tension string are arranged in an inverted triangle; the three-phase conductors suspended on the first conductor tension string hanging point, the second conductor tension string hanging point and the fourth conductor tension string hanging point on the front side of the tower body through the conductor tension string are arranged in an oblique triangle.

5. A connection tower for a compact line and a conventional line according to claim 1, characterized in that: The fourth conductor tension string hanging point is located at the lower right of the first conductor tension string hanging point, and the horizontal projection distance between the two is not less than 4 meters.

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