CN108418167B - Same-tower four-loop single-wire cable terminal tower - Google Patents

Same-tower four-loop single-wire cable terminal tower Download PDF

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Publication number
CN108418167B
CN108418167B CN201810481621.4A CN201810481621A CN108418167B CN 108418167 B CN108418167 B CN 108418167B CN 201810481621 A CN201810481621 A CN 201810481621A CN 108418167 B CN108418167 B CN 108418167B
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China
Prior art keywords
transmission line
power transmission
tower body
tower
power
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CN108418167A (en
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贾晓钰
陈刚
徐波
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Sichuan Xidian Power Design Co ltd
Qingdao Zhongzi Zhongcheng Group Co ltd
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Sichuan Xidian Power Design Co ltd
Qingdao Zhongzi Zhongcheng Group Co ltd
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Publication of CN108418167A publication Critical patent/CN108418167A/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00Overhead installations of electric lines or cables
    • H02G7/20Spatial arrangements or dispositions of lines or cables on poles, posts or towers
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/02Structures made of specified materials
    • E04H12/08Structures made of specified materials of metal
    • E04H12/10Truss-like structures
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/24Cross arms

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Electric Cable Installation (AREA)

Abstract

The invention discloses a same-tower four-loop single-wire cable terminal tower, belongs to the field of power transmission towers, and aims to save cables, reduce the load of the towers and facilitate maintenance. The device comprises a tower body and a four-circuit power transmission line; the lower section of the tower body is provided with a square installation platform around the tower body; each power transmission line of the first power transmission line, the second power transmission line, the third power transmission line and the fourth power transmission line is respectively led downwards from the front side, the rear side, the left side and the right side of the tower body and is connected with a cable head on the installation platform. According to the invention, the square mounting platform is arranged around the tower body at the lower section of the tower body, and each power transmission line is led downwards and connected with the cable head of the mounting platform, so that the connection position of the power transmission line and the cable is reduced, the length of the cable is shortened, excessive clamp investment for high-altitude cable laying is avoided, and the load of the tower body is reduced; the installation platform standardizes the down-lead mode of the power transmission line and the down-lead mode of the cable, so that the whole tower body is simpler in appearance, and good conditions are created for maintenance.

Description

Same-tower four-loop single-wire cable terminal tower
Technical Field
The invention belongs to the field of cable towers, and particularly relates to a same-tower four-loop single-wire cable terminal tower.
Background
In a channel poking section, the channel cannot meet the requirement of erecting an overhead power transmission line, the power transmission line is required to be laid under a cable after being erected in an overhead mode, and the cable terminal tower has the function of changing the overhead power transmission line into a demarcation point of the cable laying mode.
The existing overhead transmission line erection mode comprises single-loop erection, same-tower double-loop erection, same-tower three-loop erection and same-tower four-loop erection. In suburban areas and planning areas, the power transmission lines can be widely used by adopting the combination of four-loop erection and cable laying modes in the same tower, so that the corridor width and the line occupied area can be effectively reduced. However, when the same tower four loops are used for a cable terminal at present, because the cable is generally directly connected with an overhead conductor by adopting the cable, the whole iron tower is full of the cable due to the fact that the number of the cable is up to 12, the iron tower load is greatly increased due to the fact that the high-voltage cable is heavy, and the cable fixing clamp is added, meanwhile, the cable length is increased, and the iron tower is not attractive.
Disclosure of Invention
The invention aims to solve the technical problem of providing the same-tower four-loop single-wire cable terminal tower which saves cables, reduces the load of an iron tower and is convenient to maintain.
The technical scheme adopted by the invention is as follows: the tower body comprises a left side, a right side, a front side and a rear side; the tower body comprises an upper section for installing a power transmission line and a lower section positioned below the upper section; a first power transmission line positioned above and a third power transmission line positioned below are arranged on the left side of the upper section of the tower body, and a second power transmission line positioned above and a fourth power transmission line positioned below are arranged on the right side of the upper section of the tower body; the first power return line comprises a first power line A1, a second power line B1 and a third power line C1; the second power return line comprises a first power line A2, a second power line B2 and a third power line C2; the third power return line includes a first power line A3, a second power line B3, and a third power line C3; the fourth power transmission line includes a first power transmission line A4, a second power transmission line B4, and a third power transmission line C4; a square mounting platform is arranged around the tower body at the lower section of the tower body;
the second power transmission line B1, the first power transmission line A1 and the third power transmission line C1 of the first power transmission line are vertically downwards led from the front side of the tower body and are connected with a cable head on the installation platform;
the second power transmission line comprises a first power transmission line A2, a second power transmission line B2 and a third power transmission line C2 which are vertically downwards led from the rear side of the tower body and are connected with a cable head on the installation platform;
the third power transmission line comprises a first power transmission line A3, a second power transmission line B3 and a third power transmission line C3 which are vertically downwards led from the left side of the tower body and are connected with a cable head on the installation platform;
the fourth power transmission line comprises a first power transmission line A4, a second power transmission line B4 and a third power transmission line C4 which are vertically downwards led from the right side of the tower body and are connected with a cable head on the installation platform.
Further, the first power transmission line A2, the second power transmission line B2 and the third power transmission line C2 of the second power transmission line are all wound from the right side of the tower body to the rear side of the tower body by adopting double struts to lead downwards.
Further, six layers of wire cross arms perpendicular to the direction of the power transmission line are arranged on the left side and the right side of the tower body, and the first power transmission line, the second power transmission line, the third power transmission line and the fourth power transmission line are correspondingly connected with the six layers of wire cross arms.
Further, when the connection points of the second power transmission line B1, the first power transmission line A1 and the third power transmission line C1 of the first transmission line and the wire cross arm are sequentially arranged from top to bottom, the connection points of the second power transmission line B1, the first power transmission line A1 and the third power transmission line C1 and the mounting platform are sequentially arranged from right to left;
when the connection points of the second power transmission line B2, the first power transmission line A2 and the third power transmission line C2 of the second transmission line and the wire cross arm are sequentially arranged from top to bottom, the connection points of the second power transmission line B2, the first power transmission line A2 and the third power transmission line C2 and the mounting platform are sequentially arranged from left to right;
when the connection points of the second power transmission line B3, the first power transmission line A3 and the third power transmission line C3 of the third transmission line and the wire cross arm are sequentially arranged from top to bottom, the connection points of the first power transmission line A3, the second power transmission line B3 and the third power transmission line C3 and the mounting platform are sequentially arranged from front to right;
when the connection points of the second transmission line B4, the first transmission line A4 and the third transmission line C4 of the fourth transmission line and the wire cross arm are sequentially arranged from top to bottom, the connection points of the third transmission line C4, the second transmission line B4 and the first transmission line A4 are sequentially arranged from front to right.
Further, the first power transmission line A1, the second power transmission line B1 and the third power transmission line C1 of the first power transmission line are all supported on the front side of the tower body through a group of first composite struts which are distributed along the extending direction of the corresponding power transmission lines and are vertical to the front side of the tower body;
the first power transmission line A2, the second power transmission line B2 and the third power transmission line C2 of the second power transmission line are all supported on the rear side of the tower body through a group of second composite struts which are distributed along the extending direction of the corresponding power transmission lines and are vertical to the rear side of the tower body;
the second transmission line B3 of the third transmission line and the second transmission line B4 of the fourth transmission line are far away from the corresponding wire cross arm and downwards led through a third composite support post arranged at the outer end of the corresponding wire cross arm;
the first power transmission line A3 of the third transmission line and the first power transmission line A4 of the fourth transmission line are respectively far away from the corresponding power transmission lines and downwards led by adopting a fourth composite support column arranged at the outer end of the wire cross arm.
Further, the first composite support column is perpendicular to the front side surface of the tower body; the second composite support column is perpendicular to the rear side face of the tower body; the third composite support column extends along the extending direction of the corresponding wire cross arm; the fourth composite support and the third composite support are horizontally arranged along the horizontal direction and perpendicular to the corresponding wire cross arm.
The beneficial effects of the invention are as follows: according to the invention, the square mounting platform is arranged around the tower body at the lower section of the tower body, and the power lines of the first power transmission line, the power lines of the second power transmission line, the power lines of the third power transmission line and the power lines of the fourth power transmission line are respectively led downwards from the front side, the rear side, the left side and the right side of the tower body and are connected with the cable heads of the mounting platform, so that the connection position of the power transmission lines and the cables is reduced, the length of the cables is shortened, excessive clamp investment for high-altitude cabling is avoided, and the load of the tower body is lightened; the installation platform is used for standardizing the down-lead mode of the power transmission line and the down-lead mode of the cable, so that the appearance of the whole tower body is more concise, and good conditions are created for maintenance.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a rear view of the present invention;
fig. 3 is a cross-sectional view A-A of fig. 1.
In the figure, a tower body 1, a first transmission line 2, a first transmission line a121, a second transmission line B122, a third transmission line C123, a second transmission line 3, a first transmission line a231, a second transmission line B232, a third transmission line C233, a third transmission line 4, a first transmission line a341, a second transmission line B342, a third transmission line C343, a fourth transmission line 5, a first transmission line a451, a second transmission line B452, a third transmission line C453, a mounting platform 6, a cable head 61, a wire cross arm 7, a double-pole 80, a first composite-pole 81, a second composite-pole 82, a third composite-pole 83, and a fourth composite-pole 84.
Detailed Description
The invention is further illustrated in the following figures and examples, in which:
as shown in fig. 1, 2 and 3, the same-tower four-loop single-wire cable terminal tower comprises a tower body 1, wherein the tower body 1 comprises a left side, a right side, a front side and a rear side; the tower body 1 comprises an upper section for installing a power transmission line and a lower section positioned below the upper section; a first power transmission line 2 positioned above and a third power transmission line 4 positioned below are arranged on the left side of the upper section of the tower body 1, and a second power transmission line 3 positioned above and a fourth power transmission line 5 positioned below are arranged on the right side of the upper section of the tower body 1; the first return transmission line 2 includes a first transmission line a121, a second transmission line B122, and a third transmission line C123; the second transmission line 3 includes a first transmission line a231, a second transmission line B232, and a third transmission line C233; the third transmission line 4 includes a first transmission line a341, a second transmission line B342, and a third transmission line C343; the fourth-loop transmission line 5 includes a first transmission line a451, a second transmission line B452, and a third transmission line C453; a square mounting platform 6 is arranged around the tower body 1 at the lower section of the tower body 1;
the second transmission line B122, the first transmission line A121 and the third transmission line C123 of the first transmission line 2 are vertically led downwards from the front side of the tower body 1 and are connected with the cable head 61 on the mounting platform 6;
the second power transmission line 3 comprises a first power transmission line A231, a second power transmission line B232 and a third power transmission line C233 which are vertically downwards led from the rear side of the tower body 1 and are connected with a cable head 61 on the installation platform 6;
the third power transmission line 4 comprises a first power transmission line A341, a second power transmission line B342 and a third power transmission line C343 which are vertically downwards led from the left side of the tower body 1 and are connected with a cable head 61 on the installation platform 6;
the fourth transmission line 5 comprises a first transmission line a451, a second transmission line B452 and a third transmission line C453 which are vertically led down from the right side of the tower body 1 and connected to a cable head 61 on the mounting platform 6.
According to the invention, the square mounting platform 6 is arranged around the tower body 1 at the lower section of the tower body 1, and the power lines of the first power transmission line 2, the power lines of the second power transmission line 3, the power lines of the third power transmission line 4 and the power lines of the fourth power transmission line 5 are respectively led downwards from the front side, the rear side, the left side and the right side of the tower body 1 and are connected with the cable heads 61 of the mounting platform 6, so that the connection position of the power transmission lines and cables is reduced, the length of the cables is shortened, excessive clamp investment for laying cables in high altitude is avoided, and the load of the tower body 1 is lightened; the installation platform 6 also standardizes the down-lead mode of the power transmission line and the down-lead mode of the cable, so that the appearance of the whole tower body 1 is more concise, and good conditions are created for maintenance.
In order to facilitate the winding of the second transmission line 3 from the right side of the tower 1 to the rear side of the tower 1, it is preferable that the first transmission line a231, the second transmission line B232 and the third transmission line C233 of the second transmission line 3 are all led down from the right side of the tower 1 to the rear side of the tower 1 by using the double support 80.
In order to facilitate the hooking of the transmission lines and ensure the electrical distance between the loops, preferably, six layers of wire cross arms 7 perpendicular to the transmission line direction are installed on the left side and the right side of the tower body 1, and the first transmission line 2, the second transmission line 3, the third transmission line 4 and the fourth transmission line 5 are correspondingly connected to the six layers of wire cross arms 7.
In order to ensure the electrical distance between the power lines and avoid the cross of the power lines in space, preferably, when the connection points of the second power line B122, the first power line a121 and the third power line C123 of the first transmission line 2 and the wire cross arm 7 are sequentially arranged from top to bottom, the connection points of the second power line B122, the first power line a121 and the third power line C123 and the mounting platform 6 are sequentially arranged from right to left;
when the connection points of the second transmission line B232, the first transmission line A231 and the third transmission line C233 of the second transmission line 3 and the wire cross arm 7 are sequentially arranged from top to bottom, the connection points of the second transmission line B232, the first transmission line A231 and the third transmission line C233 and the mounting platform 6 are sequentially arranged from left to right;
when the connection points of the second power transmission line B342, the first power transmission line A341 and the third power transmission line C343 of the third transmission line 4 and the wire cross arm 7 are sequentially arranged from top to bottom, the connection points of the first power transmission line A341, the second power transmission line B342 and the third power transmission line C343 and the mounting platform 6 are sequentially arranged from front to right;
when the connection points of the second transmission line B452, the first transmission line a451, and the third transmission line C453 of the fourth transmission line 5 and the wire cross arm 7 are sequentially arranged from top to bottom, the connection points of the third transmission line C453, the second transmission line B452, and the first transmission line a451 are sequentially arranged from front to right.
In order to fix the power transmission lines, prevent the power transmission lines from swinging along with wind under the action of external force such as wind, so as to ensure operation safety and maintenance convenience, preferably, the first power transmission line A121, the second power transmission line B122 and the third power transmission line C123 of the first power transmission line 2 are all supported on the front side of the tower body 1 through a group of first composite struts 81 distributed along the extending direction of the corresponding power transmission lines and vertical to the front side of the tower body 1;
the first power transmission line a231, the second power transmission line B232 and the third power transmission line C233 of the second power transmission line 3 are all supported on the rear side of the tower body 1 through a group of second composite struts 82 which are distributed along the extending direction of the corresponding power transmission lines and are perpendicular to the rear side of the tower body 1;
the second transmission line B342 of the third power transmission line 4 and the second transmission line B452 of the fourth power transmission line 5 are both far away from the corresponding wire cross arm 7 and led downwards through a third composite strut 83 installed at the outer end of the corresponding wire cross arm 7;
the first transmission line a341 of the third transmission line 4 and the first transmission line a451 of the fourth transmission line 5 are both far away from the corresponding transmission lines and led down by adopting a fourth composite strut 84 installed at the outer end of the wire cross arm 7.
In order to facilitate the installation and control of the distance between the power lines, it is preferable that the first composite post 81 is perpendicular to the front side of the tower 1; the second composite strut 82 is vertical to the rear side surface of the tower body 1; the third composite strut 83 extends along the extending direction of the corresponding wire cross arm 7; the fourth composite strut 84 and the third composite strut 83 are arranged horizontally and perpendicular to the corresponding wire crossarm 7.

Claims (4)

1. The tower with the four loops and the single-wire cable terminal comprises a tower body (1), wherein the tower body (1) comprises a left side, a right side, a front side and a rear side; the tower body (1) comprises an upper section for installing a power transmission line and a lower section positioned below the upper section; a first power transmission line (2) positioned above and a third power transmission line (4) positioned below are arranged on the left side of the upper section of the tower body (1), and a second power transmission line (3) positioned above and a fourth power transmission line (5) positioned below are arranged on the right side of the upper section of the tower body (1); the first transmission line (2) comprises a first transmission line A1 (21), a second transmission line B1 (22) and a third transmission line C1 (23); the second transmission line (3) comprises a first transmission line A2 (31), a second transmission line B2 (32) and a third transmission line C2 (33); the third transmission line (4) comprises a first transmission line A3 (41), a second transmission line B3 (42) and a third transmission line C3 (43); the fourth transmission line (5) comprises a first transmission line A4 (51), a second transmission line B4 (52) and a third transmission line C4 (53); the method is characterized in that: a square mounting platform (6) is arranged around the tower body (1) at the lower section of the tower body (1);
the second power transmission line B1 (22), the first power transmission line A1 (21) and the third power transmission line C1 (23) of the first power transmission line (2) are vertically downwards led from the front side of the tower body (1) and are connected with a cable head (61) on the installation platform (6);
the second power transmission line (3) comprises a first power transmission line A2 (31), a second power transmission line B2 (32) and a third power transmission line C2 (33) which are vertically downwards led from the rear side of the tower body (1) and are connected with a cable head (61) on the installation platform (6);
the third power transmission line (4) comprises a first power transmission line A3 (41), a second power transmission line B3 (42) and a third power transmission line C3 (43), which are vertically downwards led from the left side of the tower body (1) and are connected with a cable head (61) on the installation platform (6);
the fourth-loop power transmission line (5) comprises a first power transmission line A4 (51), a second power transmission line B4 (52) and a third power transmission line C4 (53) which are vertically downwards led from the right side of the tower body (1) and are connected with a cable head (61) on the installation platform (6);
six layers of wire cross arms (7) perpendicular to the direction of the power transmission lines are arranged on the left side and the right side of the tower body (1), and the first power transmission line (2), the second power transmission line (3), the third power transmission line (4) and the fourth power transmission line (5) are correspondingly connected with the six layers of wire cross arms (7);
when the connection points of the second transmission line B1 (22), the first transmission line A1 (21) and the third transmission line C1 (23) of the first transmission line (2) and the wire cross arm (7) are sequentially arranged from top to bottom, the connection points of the second transmission line B1 (22), the first transmission line A1 (21) and the third transmission line C1 (23) and the mounting platform (6) are sequentially arranged from right to left;
when the connection points of the second transmission line B2 (32), the first transmission line A2 (31) and the third transmission line C2 (33) of the second transmission line (3) and the wire cross arm (7) are sequentially arranged from top to bottom, the connection points of the second transmission line B2 (32), the first transmission line A2 (31) and the third transmission line C2 (33) and the mounting platform (6) are sequentially arranged from left to right;
when the connection points of the second transmission line B3 (42), the first transmission line A3 (41) and the third transmission line C3 (43) of the third transmission line (4) and the wire cross arm (7) are sequentially arranged from top to bottom, the connection points of the first transmission line A3 (41), the second transmission line B3 (42) and the third transmission line C3 (43) and the mounting platform (6) are sequentially arranged from front to right;
when the connection points of the second power transmission line B4 (52), the first power transmission line A4 (51) and the third power transmission line C4 (53) of the fourth transmission line (5) and the wire cross arm (7) are sequentially arranged from top to bottom, the connection points of the third power transmission line C4 (53), the second power transmission line B4 (52) and the first power transmission line A4 (51) are sequentially arranged from front to right.
2. The on-tower four-circuit single-wire cable termination tower of claim 1, wherein: the first power transmission line A2 (31), the second power transmission line B2 (32) and the third power transmission line C2 (33) of the second power transmission line (3) are all led downwards from the rear side of the tower body (1) by adopting double struts (80).
3. The same tower four loop single wire cable termination tower of claim 1 or 2, wherein: the first power transmission line A1 (21), the second power transmission line B1 (22) and the third power transmission line C1 (23) of the first power transmission line (2) are all supported on the front side of the tower body (1) through a group of first composite struts (81) which are distributed along the extending direction of the corresponding power transmission lines and are vertical to the front side of the tower body (1);
the first power transmission line A2 (31), the second power transmission line B2 (32) and the third power transmission line C2 (33) of the second power transmission line (3) are all supported on the rear side of the tower body (1) through a group of second composite struts (82) which are distributed along the extending direction of the corresponding power transmission lines and are vertical to the rear side of the tower body (1);
the second transmission line B3 (42) of the third transmission line (4) and the second transmission line B4 (52) of the fourth transmission line (5) are far away from the corresponding wire cross arm (7) and downwards led through a third composite support column (83) arranged at the outer end of the corresponding wire cross arm (7);
the first power transmission line A3 (41) of the third power transmission line (4) and the first power transmission line A4 (51) of the fourth power transmission line (5) are respectively far away from the corresponding power transmission line and downwards led by adopting a fourth composite support column (84) arranged at the outer end of the wire cross arm (7).
4. The on-tower four-circuit single-wire cable termination tower of claim 3, wherein: the first composite support column (81) is perpendicular to the front side surface of the tower body (1); the second composite support column (82) is perpendicular to the rear side surface of the tower body (1); the third composite support column (83) extends along the extending direction of the corresponding wire cross arm (7); the fourth composite strut (84) and the third composite strut (83) are arranged horizontally and perpendicular to the corresponding wire cross arm (7).
CN201810481621.4A 2018-05-18 2018-05-18 Same-tower four-loop single-wire cable terminal tower Active CN108418167B (en)

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Title
"同塔四回路钢管杆高压电缆接线方式探讨";张学伟;《黑龙江科技信息》;全文 *
"同塔多回架空输电线路设计";孙建龙;《江苏电机工程》;全文 *

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