CN111852155A - 110kV cat head type composite cross arm tower - Google Patents
110kV cat head type composite cross arm tower Download PDFInfo
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- CN111852155A CN111852155A CN202010735574.9A CN202010735574A CN111852155A CN 111852155 A CN111852155 A CN 111852155A CN 202010735574 A CN202010735574 A CN 202010735574A CN 111852155 A CN111852155 A CN 111852155A
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- 239000002131 composite material Substances 0.000 title claims abstract description 78
- 241000282326 Felis catus Species 0.000 title description 3
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 47
- 239000010959 steel Substances 0.000 claims abstract description 47
- 239000012212 insulator Substances 0.000 claims description 73
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 2
- 239000011152 fibreglass Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 13
- 239000000463 material Substances 0.000 abstract description 7
- 150000001875 compounds Chemical class 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 208000025274 Lightning injury Diseases 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000000725 suspension 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
- E04H12/02—Structures made of specified materials
-
- 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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- 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)
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The invention discloses a 110kV cat-head type composite cross arm tower which comprises a set of middle-phase composite cross arm, two sets of side-phase composite cross arms, a tower window supporting arm, two sets of steel ground wire supports and an angle steel tower body. Specifically, the middle-phase composite cross arm is fixed on the inner sides of the two support arms of the tower window through the connecting piece at the end part of the tower frame, the side-phase composite cross arm is arranged on the outer sides of the two support arms of the tower window, and the ground wire support is fixed on the upper sides of the two support arms of the tower window. Except the composite cross arm structure of the middle phase and the side phase, other structures are angle steel or steel connecting pieces. On the basis of the traditional angle steel power transmission tower, the main body form of the tower body is not changed, and the upper structure of the tower head is improved. The concrete expression is, replace former angle steel cross arm for FRP combined material cross arm, according to the peculiar insulating characteristics of compound cross arm, improve the tower head, remedied the not enough of material rigidity through structural design, realized the reasonable combination of compound cross arm and angle steel tower main part.
Description
Technical Field
The invention belongs to the field of high-voltage power transmission, relates to a 110kV cat-head type composite cross arm tower, and particularly relates to a structural design of a middle-phase composite cross arm.
Background
In the transmission line, the traditional pole tower used by the overhead transmission line has the defects of large mass, easy corrosion, easy cracking, short service life and the like. Due to the problems of the tower body structure and the like, various problems such as windage yaw tripping, bird droppings flashover, wide line corridor, lightning stroke tripping and the like exist mostly, and the construction cost and the operation and maintenance cost are high, and the economic performance is poor.
The FRP composite material has the characteristics of high strength, light weight, corrosion resistance, good durability, good electrical insulation performance and the like. The material is used for manufacturing the composite cross arm of the transmission tower, and is beneficial to improving the insulating property of the cross arm and reducing the size of a tower head; the method is favorable for solving windage yaw and pollution flashover accidents of the power transmission line and improving the safe operation level of the line; the fire resistance of the cross arm is improved, and the normal operation of the transmission line is guaranteed; the mechanical property of the cross arm is improved, and the stability and the service life of the transmission tower are ensured; the composite cross arm has the characteristics of portability, easiness in processing and forming, easiness in going up to the tower and assembling and the like, so that the transportation and assembly cost of the tower can be reduced; the characteristics of corrosion resistance, high and low temperature resistance, high strength and low possibility of being stolen of the composite material are utilized, so that the operation and maintenance cost of the line can be reduced; meanwhile, the composite cross arm is adjustable in color, non-toxic and reusable after being scrapped, so that the environmental friendliness of the line is enhanced.
At present, the study on the wine glass type and drum type composite cross arm tower is more, and the study on the cat-head type composite cross arm tower is not carried out yet.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the 110kV cat-head type composite cross arm tower which has the advantages of simple structure, definite force transmission, reasonable stress, attractive appearance, convenient construction and stable support, can save the width of a corridor, promotes environmental friendliness, reduces windage flashover accidents and reduces the construction cost.
In order to realize the technical problem, the invention adopts the following technical scheme:
a110 kV cat-head type composite cross arm tower comprises a tower body and a tower window positioned at the upper part of the tower body, wherein the tower window comprises two supporting arms with an outward-expanding opening structure, the tops of the two supporting arms are respectively provided with a ground wire support, the middle parts of the two supporting arms are provided with a middle-phase composite cross arm, and the outer sides of the middle parts of the two supporting arms are provided with side-phase composite cross arms; according to the spatial position relation, the two tower window supporting arms, the ground wire support and the side phase composite cross arm enclose a cat head type tower head structure.
Furthermore, the middle-phase composite cross arm and the lateral composite cross arm both comprise a post insulator and a cable-stayed insulator.
Furthermore, the middle-phase composite cross arm comprises four middle-phase post insulators and two middle-phase horizontal pull rod insulators, the two middle-phase post insulators on the same side of the supporting arm are arranged in a V shape in the same plane, and one end of the middle-phase post insulators positioned at the V-shaped opening is connected to the tower body of the tower.
Preferably, the middle phase post insulators of the two supporting arms are connected through a middle phase steel hanging point device, the middle phase horizontal pull rod insulator is perpendicular to the direction of the wire and is connected with the supporting arms on the two sides through an annular connecting piece through a T-shaped steel connecting piece, and a triangular self-balancing system is formed by the middle phase post insulators and the left and right middle phase post insulators.
Preferably, the side phase composite cross arm comprises two V-shaped side phase post insulators and two side phase diagonal insulators, and the two side phase diagonal insulators are arranged in a V shape in the same plane.
Furthermore, the middle phase post insulator is connected with the middle phase steel hanging point device through a wire end connecting piece, the middle phase post insulator is connected with the T-shaped steel connecting piece through a tower frame end connecting piece, and the side phase post insulator is connected with the L-shaped connecting plate through a tower frame end connecting piece; the middle phase pull rod insulator is connected with the T-shaped steel connecting piece through the annular connecting piece, and the side phase diagonal insulator is connected with the side phase post insulator wire end connecting piece through the annular connecting piece.
Furthermore, the side phase post insulator is connected to the window tower supporting arm through a cross flashboard connecting piece at the end part of the tower frame; the two side phase post insulators are connected through a connecting piece at the end part of a lead by bolts to form a V-shaped structure.
Furthermore, the middle phase steel hanging point device is a T-shaped steel connecting piece, and two sides of a flange of the middle phase steel hanging point device are inclined downwards by 15-45 degrees; the tower end connecting piece and the lead end connecting piece of the middle phase cross arm are both glued into a whole with the steel sleeve at the end of the middle phase cross arm; the T-shaped steel connecting piece is integrated with the gusset plate L through welding.
In the invention, except that the middle-phase composite cross arm and the side-phase composite cross arm are made of composite materials, other structural components are angle steel or steel components.
Preferably, the post insulator is a rigid part, the cable-stayed insulator is a flexible part, and the composite material adopts glass fiber reinforced plastic epoxy resin fibers.
Compared with the prior art, the invention has the beneficial effects that:
the tower window and the tower body form a cat-head structure, so that the structure is simple and the form is beautiful; the cross arms are symmetrical in structure, the middle phase cross arm is a self-balancing structure, and each component effectively transmits load to a tower body node through a space truss system.
Compared with the conventional cat-head type angle steel tower, the novel iron tower has the advantages that the breath height is reduced by about 1.5m, the tower height is reduced by about 3.5m, the width of a line corridor is reduced by 13.5%, the tower weight is reduced by 15%, and the overall manufacturing cost is saved by 13% due to the fact that the upper structure of the tower head is simplified and the suspension insulator string is cancelled.
Drawings
Fig. 1 is a single line diagram of a composite cross arm tower of the present invention.
Fig. 2 is a front view of the composite cross arm structure of the present invention.
Fig. 3 is a top view of the composite cross arm structure of the present invention.
Fig. 4 is a front view of the side-phase composite cross arm structure of the present invention.
Fig. 5 is a top view of the edge-phase composite cross arm structure of the present invention.
Fig. 6 is a schematic structural diagram of a steel cross arm cat-head type transmission tower.
The meaning of each reference number in the figures is:
1-middle phase post insulator; 2-middle phase horizontal pull rod insulator; 3-side phase post insulators; 4-side phase diagonal insulator; 5-a ground wire bracket; 6-a support arm; 7-a tower body; 8-a middle phase steel hanging point device; 9-middle phase post insulator wire end connecting piece, 10-middle phase post insulator tower end connecting piece; 11-a bolt; 12-a ring connector; 13-T-shaped steel connectors; 14-L-shaped connecting plates; 15-a cross plugboard connecting piece at the end part of the side phase post insulator tower; 16-side phase post insulator wire end connection.
The details of the present invention are explained in further detail below with reference to the drawings and the detailed description.
Detailed Description
The following embodiments of the present invention are provided, and it should be noted that the present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention are within the protection scope of the present invention.
In the present invention, unless otherwise specified, use of the directional terms "upper" and "lower" generally refer to the definition in the drawing figures, in which reference is made to the drawing figures of the accompanying drawings, and "inner" and "outer" refer to the inner and outer of the outline of the corresponding component.
According to the spatial position relation, the cross arm structure is symmetrical, and the cross arm structure, the ground wire support, the side phase diagonal insulator, the side phase post insulator and the tower window supporting arm are enclosed to form the cat-head type tower head structure.
As shown in fig. 1, the invention discloses a 110kV cat-head type composite cross arm tower, which comprises a set of middle phase composite cross arm, two sets of side phase composite cross arms, a tower window supporting arm 6, two sets of steel ground wire brackets 5 and an angle steel tower body 7. Specifically, the middle-phase composite cross arm is fixed on the inner sides of the two support arms 6 of the tower window through the tower end connecting piece 10, the side-phase composite cross arm is arranged on the outer sides of the two support arms 6 of the window tower, and the ground wire support 5 is fixed on the upper sides of the two support arms 6 of the tower window. Except the composite cross arm structure of the middle phase and the side phase, other structures are angle steel or steel connecting pieces.
Specifically, the middle-phase composite cross arm comprises four FRP composite material post insulators 1 and two middle-phase horizontal pull rod insulators 2. Further, as shown in fig. 2, two of the four middle phase post insulators form a V-shaped structure, and are connected to the middle phase steel hanging point device 8 and the two support arms 6 of the tower window by bolts 11 through a wire end connecting piece 9 and a tower end connecting piece 10 respectively; the middle phase horizontal pull rod insulator 2 is connected to a T-shaped steel connecting piece 13 rigidly connected with the two tower window supporting arms 6 through an annular connecting piece 12, and forms a triangular structure with the middle phase post insulator 1 in a plane; the whole middle-phase composite cross arm structure system is fixed on the two tower window supporting arms 6 through the L-shaped connecting plate 14.
Specifically, the edge-phase composite cross arm comprises two FRP composite material post insulators 3 and two composite material edge-phase diagonal insulators 4. The composite material is a glass fiber reinforced epoxy resin matrix composite material.
Further, as shown in fig. 4, two post insulators form a V-shaped structure in a plane, the two post insulators are connected together by a bolt 11 at a connecting piece 16 at the end of a wire, and the side post insulator 3 is fixed on a window tower by a cross inserting plate connecting piece 15 at the end of a tower; the side-phase diagonal insulators 4 are connected to the post insulators 3 and the window tower supporting arms 6 through annular connecting pieces 12, and the two diagonal insulators form a V-shaped structure in the same plane.
Specifically, the 110kV cat-head type composite cross arm tower is a space truss system, and except for the cross arm structure system, other structural components are steel components. The stress principle is simple, and the middle-phase composite post insulator 1 mainly bears pressure under the normal operation condition, and can partially bear tension and partially bear pressure under the condition of strong wind or uneven snow pressure. The middle-phase horizontal pull rod insulator 2 bears tension and forms a self-balancing system with the middle-phase composite post insulator 1. The whole middle-phase cross arm system is simple in force transmission, the force on each component can be effectively transmitted to the position of the tower body node, and the stress of the whole tower is reasonable.
According to the 110kV cat-head type composite cross arm tower realized according to the technical scheme, the FRP composite material main material is fixedly connected with the steel sleeve through epoxy resin, namely the steel sleeve is connected, the deformation of the FPR component is limited by the connection, the bearing capacity of the node is improved, the force transmission is reliable, and the connection is convenient; the FRP composite material main material and the composite insulator are connected into a whole through the bolt piece to form the lattice type composite material cat-head tower head with simple structural form and attractive appearance.
On the basis of the traditional angle steel power transmission tower, the main body form of the tower body is not changed, and the upper structure of the tower head is improved. The concrete expression is, replace former angle steel cross arm for FRP combined material cross arm, according to the peculiar insulating characteristics of compound cross arm, improve the tower head, remedied the not enough of material rigidity through structural design, realized the reasonable combination of compound cross arm and angle steel tower main part.
The respective specific technical features described in the above-described embodiments may be combined in any suitable manner without contradiction as long as they do not depart from the gist of the present invention, and should also be regarded as being disclosed in the present invention.
Claims (10)
1. The 110kV cat-head type composite cross arm tower comprises a tower body (7) and a tower window positioned on the upper part of the tower body (7), and is characterized in that the tower window comprises two supporting arms (6) with an outward-expanding opening structure, the tops of the two supporting arms (6) are respectively provided with a ground wire support (5), the middle parts of the two supporting arms (6) are provided with middle-phase composite cross arms, and the outer sides of the middle parts of the two supporting arms (6) are respectively provided with side-phase composite cross arms; according to the spatial position relation, the two tower window supporting arms (6), the ground wire support and the side phase composite cross arm enclose a cat-head type tower head structure.
2. The 110kV cat-head type composite cross arm tower of claim 1, wherein the middle-phase composite cross arm and the side-to-side composite cross arm each comprise a post insulator and a diagonal pull insulator.
3. The 110kV cat-head type composite cross arm tower as claimed in claim 2, wherein the middle phase composite cross arm comprises four middle phase post insulators (1) and two middle phase horizontal pull rod insulators (2), the two middle phase post insulators (1) on the same side of the supporting arm (6) are arranged in a V shape in the same plane, and one end at the V-shaped opening is connected to the tower body (7) of the tower.
4. The 110kV cat-head type composite cross-arm tower of claim 3, wherein the middle phase post insulators (1) of the two support arms (6) are connected through a middle phase steel hanging point device (8), the middle phase horizontal pull rod insulator (2) is connected with the two side support arms (6) through a T-shaped steel connecting piece (13) by a ring-shaped connecting piece (12) perpendicular to the direction of the wire, and a triangular self-balancing system is formed by the middle phase post insulators and the left and right middle phase post insulators (1).
5. The 110kV cat-head type composite cross arm tower as claimed in claim 2, wherein the side phase composite cross arm comprises two V-shaped side phase post insulators (3) and two side phase diagonal insulators (4), and the two side phase diagonal insulators (4) are arranged in a V shape in the same plane.
6. A 110kV cat-head composite cross-arm tower according to claim 3, wherein the middle phase post insulator (1) is connected with the middle phase steel hanging point device (8) through the wire end connecting piece (9), the middle phase post insulator (1) is connected with the T-shaped steel connecting piece (13) through the tower end connecting piece (10), and the side phase post insulator (3) is connected with the L-shaped connecting plate (14) through the tower end connecting piece; the middle phase pull rod insulator is connected with a T-shaped steel connecting piece (13) through an annular connecting piece (12), and the side phase diagonal insulator (4) is connected with a side phase post insulator wire end connecting piece (16) through the annular connecting piece (12).
7. A110 kV cat-head composite cross-arm tower according to claim 5, characterized in that the side-phase post insulators (3) are connected to the window tower support arms (6) by tower end spile connectors (15); the two side phase post insulators are connected by bolts (11) through a wire end connecting piece (16) to form a V-shaped structure.
8. The 110kV cat-head type composite cross-arm tower of claim 4, wherein the middle phase steel hanging point device (8) is a T-shaped steel connecting piece, and two sides of a flange of the middle phase steel hanging point device are inclined downwards by 15-45 degrees; the tower end connecting piece (10) and the lead end connecting piece (9) of the middle phase cross arm are both glued into a whole with the steel sleeve at the end of the middle phase cross arm; the T-shaped steel connecting piece (13) is integrated with the gusset plate L (14) through welding.
9. The 110kV cat-head type composite cross arm tower of claim 1, wherein the other structural members are angle steels or steel members except that the middle-phase composite cross arm and the side-phase composite cross arm are made of composite materials.
10. The 110kV cat-head type composite cross arm tower of claim 9, wherein the post insulator is a rigid member, the diagonal insulator is a flexible member, and the composite material is glass fiber reinforced plastic epoxy resin fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010735574.9A CN111852155A (en) | 2020-07-28 | 2020-07-28 | 110kV cat head type composite cross arm tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010735574.9A CN111852155A (en) | 2020-07-28 | 2020-07-28 | 110kV cat head type composite cross arm tower |
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| Publication Number | Publication Date |
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| CN111852155A true CN111852155A (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010735574.9A Pending CN111852155A (en) | 2020-07-28 | 2020-07-28 | 110kV cat head type composite cross arm tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114893052A (en) * | 2022-06-24 | 2022-08-12 | 扬州浩辰电力设计有限公司 | Ecological double-loop tangent tower adaptive to novel power system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100064598A1 (en) * | 2008-09-17 | 2010-03-18 | Korea Electric Power Corporation | Power transmission tower |
| CN201466636U (en) * | 2009-07-28 | 2010-05-12 | 三峡大学 | Windage-yaw-prevention cat-head tangent tower |
| CN106567603A (en) * | 2016-10-27 | 2017-04-19 | 中国电力工程顾问集团西北电力设计院有限公司 | 750 kV wine glass composite cross arm tower |
| CN208885095U (en) * | 2018-09-26 | 2019-05-21 | 电力规划总院有限公司 | A kind of compound cross-arm tower of 1000kV wine glass-shaped |
| CN212535271U (en) * | 2020-07-28 | 2021-02-12 | 国网甘肃省电力公司经济技术研究院 | 110kV cat head type composite cross arm tower |
-
2020
- 2020-07-28 CN CN202010735574.9A patent/CN111852155A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100064598A1 (en) * | 2008-09-17 | 2010-03-18 | Korea Electric Power Corporation | Power transmission tower |
| CN201466636U (en) * | 2009-07-28 | 2010-05-12 | 三峡大学 | Windage-yaw-prevention cat-head tangent tower |
| CN106567603A (en) * | 2016-10-27 | 2017-04-19 | 中国电力工程顾问集团西北电力设计院有限公司 | 750 kV wine glass composite cross arm tower |
| CN208885095U (en) * | 2018-09-26 | 2019-05-21 | 电力规划总院有限公司 | A kind of compound cross-arm tower of 1000kV wine glass-shaped |
| CN212535271U (en) * | 2020-07-28 | 2021-02-12 | 国网甘肃省电力公司经济技术研究院 | 110kV cat head type composite cross arm tower |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114893052A (en) * | 2022-06-24 | 2022-08-12 | 扬州浩辰电力设计有限公司 | Ecological double-loop tangent tower adaptive to novel power system |
| CN114893052B (en) * | 2022-06-24 | 2024-07-09 | 扬州浩辰电力设计有限公司 | Ecological double-loop tangent tower suitable for novel power system |
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