CN114059832A - Single-loop lightning arrester linear tower for 500kV line engineering in high-altitude area - Google Patents
Single-loop lightning arrester linear tower for 500kV line engineering in high-altitude area Download PDFInfo
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- CN114059832A CN114059832A CN202111586443.XA CN202111586443A CN114059832A CN 114059832 A CN114059832 A CN 114059832A CN 202111586443 A CN202111586443 A CN 202111586443A CN 114059832 A CN114059832 A CN 114059832A
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- 239000004020 conductor Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 description 10
- 238000009434 installation Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 208000025274 Lightning injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/24—Cross arms
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Abstract
The utility model provides a high altitude area 500kV line engineering single-circuit arrester straight line shaft tower, includes the shaft tower main part and sets up the wire cross arm at shaft tower main part top, the wire cross arm constitute by well cross arm and the limit wire cross arm of connection at well cross arm both ends to the tip of limit wire cross arm respectively encorbelments out a pair arrester support, the lower surface of well cross arm and limit wire cross arm sets up three-phase wire and hangs the point, well phase conductor connects on well phase conductor of well cross arm lower surface hangs the point, two-phase limit phase conductor connects on the limit looks wire of limit wire cross arm lower surface hangs the point, limit looks wire hangs the point and is located the tip of limit wire cross arm, the arrester body is connected to the support end of arrester support, limit looks wire and arrester body be in coplanar and limit looks wire is located the below of arrester body. The lightning protection device has a better lightning protection effect, solves the problem of poor lightning protection effect of the single-loop tangent tower of the alternating current line, and widens the application range of the single-loop tangent tower of the alternating current of 500 kV.
Description
Technical Field
The invention belongs to the field of power transmission line engineering, and particularly relates to a single-loop lightning arrester linear tower for 500kV line engineering in a high-altitude area.
Background
In recent years, as 500kV lines in high-altitude areas are gradually built into networking, power transmission levels are continuously increased. And the high-altitude area leads the regional span of the power transmission line to be large due to the special geographic environment and is in a severe environment. The external force, the lightning stroke and the bird damage are three main disasters threatening the safe operation of the power transmission line.
In general transmission line engineering, lightning protection measures such as lightning protection lines and grounding are generally adopted. However, in high-altitude areas, due to high altitude, many mountainous areas, large topographic relief, severe environmental conditions and many lightning strikes in some areas, lightning protection measures such as conventional ground wires and grounding need to be taken, and extra lightning protection measures need to be taken.
A conventional 500kV alternating current single-circuit straight line tower side cross arm only suspends one-phase lead, so that the appearance is mostly in a wine glass tower type, the side cross arm adopts a triangular type or an opening type, and the cross arms are arranged in an equal-width or necking mode.
In order to arrange the lightning arrester support at the cross arm end, the side wire cross arm of the straight tower needs to be reset, so that the lightning arrester is convenient to install and operate and maintain at the later stage.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a single-loop lightning arrester linear tower for 500kV line engineering in a high-altitude area, which reliably meets the requirement of installing a lightning arrester of a 500kV alternating-current transmission line linear tower in the high-altitude area and improves the lightning protection effect of the single-loop alternating-current transmission line linear tower.
In order to achieve the purpose, the invention has the following technical scheme:
the utility model provides a high altitude area 500kV line engineering single-circuit arrester straight line shaft tower, includes the shaft tower main part and sets up the wire cross arm at shaft tower main part top, the wire cross arm constitute by well cross arm and the limit wire cross arm of connection at well cross arm both ends to the tip of limit wire cross arm respectively encorbelments out a pair arrester support, the lower surface of well cross arm and limit wire cross arm sets up three-phase wire and hangs the point, well phase wire is connected on well phase wire of well cross arm lower surface hangs the point, and two-phase limit phase wire is connected on the limit looks wire of limit wire cross arm lower surface hangs the point, and limit looks wire hangs the point and is located the tip of limit wire cross arm, and the arrester body is connected to the support end of arrester support, limit looks wire and arrester body be in the coplanar and limit looks wire is located the below of arrester body.
As a preferred scheme of the invention, the tower main body comprises tower legs, a tower body supporting and arranged on the tower legs and a lower bent arm structure arranged at the top of the tower body, wherein the lower bent arm structure is connected with a supporting wire cross arm through an upper bent arm structure; the lower crank arm structure is composed of two lower crank arm branches arranged in a V shape, and the upper crank arm structure is composed of an upper crank arm branch connected between the tops of the two lower crank arm branches and the wire cross arm.
As a preferred scheme of the invention, four tower legs are arranged, the tower body is a tower body with a square section structure, the tower legs are respectively supported and arranged at four corners of the lower surface of the tower body, two lower crank arm branches of the lower crank arm structure and two upper crank arm branches of the upper crank arm structure are both triangular structures, the bottom surfaces of the lower crank arm branches and the upper crank arm branches are both square, and the lower crank arm branches and the upper crank arm branches are in corner-diagonal connection.
As a preferable aspect of the present invention, the surge arrester support is arranged perpendicular to the side wire cross arm, and the side wire cross arm is arranged perpendicular to the line direction, and the surge arrester support is arranged parallel to the line direction.
As a preferred scheme of the invention, the side wire cross arm and the lightning arrester bracket adopt a triangular equal-width structure.
As a preferred scheme of the invention, the lightning arrester bracket adopts a non-closing design, and the root part of the lightning arrester bracket is connected with the side wire cross arm by adopting bolts and angle steel; the support end sets up the double limb angle steel, reserves the string line hole of connecting the arrester body.
In a preferred embodiment of the present invention, the bottom surface of the lightning arrester support is substantially longer than the top main material, the lower plane of the lightning arrester support is arranged in a cross diagonal material, the side diagonal materials are arranged in a triangular shape, and the upper plane is arranged in a single diagonal material.
As a preferred scheme of the present invention, the middle phase conductor adopts a "V" serial jumper, and the two phase side phase conductors adopt an "I" serial jumper.
As a preferable scheme of the present invention, two ends of the upper surface of the middle cross arm are respectively provided with a ground wire bracket.
Compared with the prior art, the invention has the following beneficial effects:
support through the shaft tower main part and set up the wire cross arm, the wire cross arm includes well cross arm and connects the limit wire cross arm at well cross arm both ends, the lower surface of well cross arm and limit wire cross arm sets up the three-phase wire and hangs the point, the tip of limit wire cross arm respectively encorbelments out a pair arrester support, the arrester body is connected to the support end of arrester support, limit looks wire hangs the point and is located the tip of limit wire cross arm, make limit looks wire and arrester body be in the below of coplanar and limit looks wire is located the arrester body, better lightning protection effect has, the poor practical problem of the lightning protection effect of alternating current circuit single-circuit tangent tower among the prior art has been solved. The structure of the invention can be obtained by improving the prior single-loop linear tower, not only can solve the practical problems of lightning arrester installation and later operation and maintenance, but also has the advantages of simple structure, clear force transmission path and convenient production and processing, can be applied to 500kV alternating current transmission line engineering in Tibet or other high-altitude and large-altitude-difference areas, and widens the application range of the 500kV alternating current single-loop linear tower.
Furthermore, the lightning arrester support is perpendicular to the side wire cross arms, the side wire cross arms are arranged perpendicular to the line direction, the lightning arrester support is arranged in parallel with the line direction, the structure is convenient for processing and lofting of the lightning arrester support, the lightning arrester support adopts an opening arrangement mode, the lightning arrester support has good stress performance, the length of the cross arms can be adjusted, and the application range of the lightning arrester is widened.
Drawings
FIG. 1 is a schematic diagram of a three-dimensional structure of a single-circuit lightning arrester linear tower of 500kV line engineering in a high-altitude area;
FIG. 2 is a schematic diagram of a front view structure of a single-circuit lightning arrester linear tower in a 500kV line project in a high-altitude area;
fig. 3 is a schematic view of the arrangement of the arrester support according to the present invention;
fig. 4 is a schematic structural view of a lightning arrester support of the present invention: (a) a top view; (b) a front view; (c) a bottom view;
in the drawings: 1-a lightning arrester support; 2-side wire cross arm; 3-a ground wire bracket; 4-middle cross arm; 5-upper crank arm structure; 6-lower crank arm structure; 7-a tower body; 8-lightning arrester body.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Referring to fig. 1, it can be seen from the three-dimensional structure of the single-loop lightning arrester linear tower in the 500kV line engineering in the high-altitude area of the invention that the linear tower mainly comprises a wine-cup-shaped tower main body and a lightning arrester support 1 perpendicular to a side wire cross arm 2, and comprises symmetrically arranged lightning arrester supports 1, side wire cross arms 2, a ground wire support 3, a middle cross arm 4, an upper crank arm structure 5, a lower crank arm structure 6 and a tower body 7 adopting a square section structure. The lightning arrester comprises a tower body, a middle cross arm 4, side wire cross arms 2 connected to two ends of the middle cross arm 4, a pair of lightning arrester supports 1 respectively cantilevered from the end parts of the side wire cross arms 2, a tower leg, a tower body 7 supported on the tower leg and a lower bent arm structure 6 arranged at the top of the tower body 7, wherein the lower bent arm structure 6 is connected with the supporting wire cross arms through an upper bent arm structure 5; the lower crank arm structure 6 is composed of two lower crank arm branches arranged in a V shape, and the upper crank arm structure 5 is composed of an upper crank arm branch connected between the tops of the two lower crank arm branches and the wire cross arm. Four tower legs are arranged, a tower body 7 is of a square section structure, the tower legs are respectively supported and arranged at four corners of the lower surface of the tower body 7, two lower crank arm branches of a lower crank arm structure 6 and two upper crank arm branches of an upper crank arm structure 5 are both of triangular structures, the bottom surfaces of the lower crank arm branches and the upper crank arm branches are both square, and the lower crank arm branches and the upper crank arm branches are in corner-diagonal connection. As shown in fig. 2, three-phase wire hanging points are arranged on the lower surfaces of the middle cross arm 4 and the side wire cross arm 2, and the three-phase wires are connected with the three-phase wire hanging points through hardware fittings and insulation strings. The middle phase wire is connected to the middle phase wire hanging point on the lower surface of the middle cross arm 4, the two phase side phase wires are connected to the side phase wire hanging point on the lower surface of the side wire cross arm 2, the side phase wire hanging point is located at the end of the side wire cross arm 2, the wire jumper adopts an I-V-I type, namely the side phase wire adopts an I-shaped serial jumper, and the middle phase wire adopts a V-shaped serial jumper. The two ends of the upper surface of the middle cross arm 4 are respectively provided with a ground wire bracket 3, and the protection angle range of the ground wire bracket meets the requirements of the current specification.
Referring to fig. 3, the surge arrester support 1 of the present invention is arranged perpendicular to the side wire cross arm 2, and the side wire cross arm 2 is arranged perpendicular to the line direction, and the surge arrester support 1 is arranged parallel to the line direction. The support end of the lightning arrester support 1 is connected with a lightning arrester body 8, the lower end of the lightning arrester body 8 is connected with a gap ring through an insulation string, the side wire cross arm 2 is a side phase wire which is connected in a hanging string mode, the side phase wire and the lightning arrester body 8 are located on the same plane, and the side phase wire is located below the lightning arrester body 8. The side wire cross arm 2 and the lightning arrester support 1 adopt a triangular equal-width structure, wherein the side wire cross arm 2 is used for connecting the lightning arrester support 1 by constructing an open triangular cross arm at the end part. The lightning arrester support 1 adopts a non-closing design, and the root of the lightning arrester support 1 is connected with the side wire cross arm 2 by adopting bolts and angle steel. The bottom surface and the top surface of the lightning arrester support 1 are long, the minimum length L of the bottom surface main material of the lightning arrester support 1 is not less than 4m, and the length can be adjusted according to actual needs.
Referring to fig. 4 (a) to (c), the lower plane of the arrester support 1 according to the present invention is arranged in a cross-diagonal, the upper plane of the arrester support 1 is arranged in a single diagonal, and the side members of the arrester support 1 are arranged in a triangle. The end of the bracket of the lightning arrester bracket 1 is provided with back-to-back double-limb angle steel, and a wire hanging hole is reserved for connecting the lightning arrester body 8.
According to the invention, the lightning arrester support is arranged right above the end part wire of the side guide cross arm, so that the lightning arrester support has a better lightning protection effect, and the actual problem of poor lightning protection effect of the single-loop tangent tower of the alternating current line in the prior art is solved. The lightning arrester support and the side wire cross arm are vertically arranged, so that the lightning arrester support is convenient to process and loft, an opening arrangement form is adopted, the lightning arrester support has good stress performance, the length of the cross arm can be adjusted, and the application range of the lightning arrester is widened. This scheme is to waiting installation pattern to improve in the past, not only can solve the actual problem of arrester installation and later stage fortune dimension, but also has the structure succinct, and it is clear to pass the power route, and the advantage of the production and processing of being convenient for can be applied to later stage tibet or other high altitudes, 500kV alternating current transmission line engineering in big difference in height area.
The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and it should be understood by those skilled in the art that the technical solution can be modified and replaced by a plurality of simple modifications and replacements without departing from the spirit and principle of the present invention, and the modifications and replacements also fall into the protection scope covered by the claims.
Claims (9)
1. The utility model provides a high altitude area 500kV line engineering single loop arrester straight line shaft tower which characterized in that: comprises a tower main body and a wire cross arm arranged at the top of the tower main body, wherein the wire cross arm consists of a middle cross arm (4) and side wire cross arms (2) connected with the two ends of the middle cross arm (4), and the end parts of the side wire cross arms (2) are respectively cantilevered out a pair of lightning arrester brackets (1), the lower surfaces of the middle cross arm (4) and the side wire cross arm (2) are provided with three-phase wire hanging points, a middle phase wire is connected with the middle phase wire hanging point on the lower surface of the middle cross arm (4), two phase side wires are connected with the side phase wire hanging points on the lower surface of the side wire cross arm (2), the side phase wire hanging points are positioned at the end part of the side wire cross arm (2), the bracket end of the lightning arrester bracket (1) is connected with a lightning arrester body (8), the side phase lead and the lightning arrester body (8) are positioned on the same plane, and the side phase lead is positioned below the lightning arrester body (8).
2. The high-altitude area 500kV line engineering single-loop lightning arrester linear tower of claim 1, characterized in that: the tower main body comprises tower legs, a tower body (7) supported on the tower legs and a lower crank arm structure (6) arranged at the top of the tower body (7), and the lower crank arm structure (6) is connected with a supporting wire cross arm through an upper crank arm structure (5); the lower crank arm structure (6) is composed of two lower crank arm branches arranged in a V shape, and the upper crank arm structure (5) is composed of an upper crank arm branch connected between the tops of the two lower crank arm branches and the wire cross arm.
3. The high-altitude area 500kV line engineering single-loop lightning arrester linear tower of claim 2, characterized in that: the tower leg be provided with four, body of the tower (7) adopt square section structure body of the tower, the tower leg supports respectively and sets up on four angles of body of the tower (7) lower surface, two of lower crank arm structure (6) are bent arm branch and are bent arm branch on two of upper crank arm structure (5) and be triangle-shaped structure and bottom surface and be squarely, bend arm branch and bend arm branch on down between the angle diagonal connection.
4. The high-altitude area 500kV line engineering single-loop lightning arrester linear tower of claim 1, characterized in that: the lightning arrester support (1) is perpendicular to the side wire cross arms (2), the side wire cross arms (2) are arranged perpendicular to the line direction, and the lightning arrester support (1) is arranged in parallel with the line direction.
5. The high-altitude area 500kV line engineering single-loop lightning arrester linear tower of claim 1, characterized in that: the side wire cross arm (2) and the lightning arrester support (1) adopt a triangular equal-width structure.
6. The high-altitude area 500kV line engineering single-loop lightning arrester linear tower as claimed in claim 5, characterized in that: the lightning arrester support (1) adopts a non-closing design, and the root of the lightning arrester support (1) is connected with the side wire cross arm (2) through bolts and angle steel; the end of the bracket is provided with double-limb angle steel, and a hanging wire hole for connecting the lightning arrester body (8) is reserved.
7. The high-altitude area 500kV line engineering single-loop lightning arrester linear tower of claim 6, characterized in that: the bottom surface of the lightning arrester support (1) is long with the top surface main material, the lower plane of the lightning arrester support (1) is arranged according to crossed oblique materials, the lateral oblique materials are arranged in a triangular mode, and the upper plane adopts a single oblique material arrangement mode.
8. The high-altitude area 500kV line engineering single-loop lightning arrester linear tower of claim 1, characterized in that: the middle phase conductor adopts V-shaped serial jumper, and the two phase side phase conductors adopt I-shaped serial jumper.
9. The high-altitude area 500kV line engineering single-loop lightning arrester linear tower of claim 1, characterized in that: and two ends of the upper surface of the middle cross arm (4) are respectively provided with a ground wire bracket (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111586443.XA CN114059832A (en) | 2021-12-21 | 2021-12-21 | Single-loop lightning arrester linear tower for 500kV line engineering in high-altitude area |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111586443.XA CN114059832A (en) | 2021-12-21 | 2021-12-21 | Single-loop lightning arrester linear tower for 500kV line engineering in high-altitude area |
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| CN114059832A true CN114059832A (en) | 2022-02-18 |
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| CN202111586443.XA Pending CN114059832A (en) | 2021-12-21 | 2021-12-21 | Single-loop lightning arrester linear tower for 500kV line engineering in high-altitude area |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204435989U (en) * | 2015-01-13 | 2015-07-01 | 中国电力工程顾问集团西北电力设计院有限公司 | One ± 500kV direct current lines tangent tower arrester adds assembling structure |
| WO2015120725A1 (en) * | 2014-02-17 | 2015-08-20 | 国网电力科学研究院武汉南瑞有限责任公司 | Lightning protection structure of overhead high voltage transmission line |
| CN107905614A (en) * | 2017-12-08 | 2018-04-13 | 国家电网公司 | A kind of transmission line of alternation current single loop tangent tower with arrester |
| WO2021223313A1 (en) * | 2020-05-08 | 2021-11-11 | 湖南省湘电试研技术有限公司 | Power transmission line without lightning shield line |
| CN215168597U (en) * | 2021-04-27 | 2021-12-14 | 中国电力工程顾问集团西南电力设计院有限公司 | Install wineglass of arrester support tower that dangles additional |
| CN216553279U (en) * | 2021-12-21 | 2022-05-17 | 中国电力工程顾问集团西北电力设计院有限公司 | Arrester single-loop straight line tower suitable for high-altitude area |
-
2021
- 2021-12-21 CN CN202111586443.XA patent/CN114059832A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015120725A1 (en) * | 2014-02-17 | 2015-08-20 | 国网电力科学研究院武汉南瑞有限责任公司 | Lightning protection structure of overhead high voltage transmission line |
| CN204435989U (en) * | 2015-01-13 | 2015-07-01 | 中国电力工程顾问集团西北电力设计院有限公司 | One ± 500kV direct current lines tangent tower arrester adds assembling structure |
| CN107905614A (en) * | 2017-12-08 | 2018-04-13 | 国家电网公司 | A kind of transmission line of alternation current single loop tangent tower with arrester |
| WO2021223313A1 (en) * | 2020-05-08 | 2021-11-11 | 湖南省湘电试研技术有限公司 | Power transmission line without lightning shield line |
| CN215168597U (en) * | 2021-04-27 | 2021-12-14 | 中国电力工程顾问集团西南电力设计院有限公司 | Install wineglass of arrester support tower that dangles additional |
| CN216553279U (en) * | 2021-12-21 | 2022-05-17 | 中国电力工程顾问集团西北电力设计院有限公司 | Arrester single-loop straight line tower suitable for high-altitude area |
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