CN205224799U - High -altitude area 330kV exchanges three return circuit transmission line commutation towers - Google Patents

High -altitude area 330kV exchanges three return circuit transmission line commutation towers Download PDF

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Publication number
CN205224799U
CN205224799U CN201521081146.XU CN201521081146U CN205224799U CN 205224799 U CN205224799 U CN 205224799U CN 201521081146 U CN201521081146 U CN 201521081146U CN 205224799 U CN205224799 U CN 205224799U
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Prior art keywords
tower
arm
wire
wire cross
towers
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CN201521081146.XU
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Chinese (zh)
Inventor
臧国华
王学明
赵雪灵
张媛
赵宝林
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Northwest Electric Power Design Institute of China Power Engineering Consulting Group
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Northwest Electric Power Design Institute of China Power Engineering Consulting Group
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Abstract

The utility model discloses a high -altitude area 330kV exchanges three return circuit transmission line commutation towers, including ground wire cross arm, wire cross arm, tower head, body of the tower and tower leg, wherein, the ground wire cross arm sets up at the tower head top for hang the ground wire, the wire cross arm is located the tower head lower part for hang nine edge looks transmission pressure and wire jumper, the main material of commutation tower adopts the angle steel that excels in, the utility model discloses the tower adopts six layers of three return circuit iron tower of cross arm, can reduce area 40 percent with tower line changing adjustment, has avoided being favorable to the social harmony because of taking up an area of the social contradications that dispute, soil reparations etc. Probably produced, can practice thrift tower material about 20 percent simultaneously to the space collision problem of wire when having solved two engineering line changings.

Description

A kind of high altitude localities 330kV exchanges three loop transmission line commutation towers
[technical field]
The utility model relates to high voltage iron tower field, particularly relates to a kind of high altitude localities 330kV and exchanges three loop transmission line commutation towers.
[background technology]
Line project is sent and Sun-Moon Mountain-Nan Shuo 330kV road engineering switches interval in order to realize Xining thermal power plant 330kV, need to realize falling mutually of two loop lines on the line, if adopt conventional tower, then need two base double loop anchor supports, shaft tower floor space is large, consumable quantity is large, and cable space collision problem not easily solves.Also do not have suitable tower structure can meet construction of line requirement at present.
[utility model content]
The purpose of this utility model is the defect overcoming prior art, provides a kind of high altitude localities 330kV to exchange three loop transmission line commutation towers, can meet the requirement of 330kV transmission line of alternation current.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of high altitude localities 330kV exchanges three loop transmission line commutation towers, and described commutation tower comprises ground wire cross-arm, wire cross-arm, tower head, tower body and tower leg; Tower head, tower body are connected successively with tower leg; Described ground wire cross-arm is arranged on described tower head top, for hanging ground wire; Ground wire cross-arm comprises the Liang Ge branch laying respectively at the left and right sides, described tower head top, and on ground wire cross-arm, plane is trapezoidal for closing up, to tower head the right and left horizontal stretching; Described wire cross-arm is positioned at described tower head bottom, and wire cross-arm comprises nine branches for hanging nine limit phase transmission pressure and wire jumpers; Wire cross-arm nine branches lay respectively at the left and right sides of tower head bottom, and wire cross-arm lower plane is rectangle, to tower head the right and left horizontal stretching; The main material of commutation tower adopts high-strength angle steel.
Further, nine branches of described wire cross-arm adopt six layers of cross-arm erection, and wherein three layers of cross-arm include the asymmetrical Liang Ge branch in left and right, and other three layers include towards the same side branch.
Further, described ground wire cross-arm is zero degree shielding angle to wire.
Further, described wire cross-arm is rectangle cross-arm.
Further, wire hitch point and ground wire hanging point adopt link plate gold utensil and strain insulator string to connect to form.
Further, side, exterior angle wire adopts two I string rigid jumper.
Further, the component at conducting wire hanging point place adopts hanging wire steel plate, and hanging wire steel plate is linked on wire cross-arm by Vertical dimension bolt.
Further, wire cross-arm and tower body junction, ground wire cross-arm and tower body junction are provided with half space.
Further, described tower leg adopts complete unequel leg extension.
Further, described tower body adopts square-section.
Compared with prior art, the utility model has the following advantages:
Commutation tower in 330kV transmission line of alternation current of the present utility model, have employed a base with tower three loop commutation tower, solve commutation and wire pitch problems, compared with conventional steel tower, three loop commutation towers can save tower material 20%, floor space reduces 40%, and the space collision problem of wire when solving two engineering thread-changings.
Further, adopt six layers of cross-arm three Loop Steel Tower, because the asymmetric of cross-arm causes the displacement of squarer tower body to exceed Criterion restriction, design have employed flat tower scheme, enhances the horizontal bending rigidity of tower body, solves displacement problems of too.Meanwhile, by optimizing steel tower with opening, avoiding the appearance of four limbs angle steel, saving tower material, decrease freight and facilitate installation.
Further, in order to alleviate tower weight, wire cross-arm lower plane is designed to rectangle.
Further, because being located in highlands, two half space being set, facilitating group pylon informant person and maintainer organizes tower or maintenance; Adopt rectangle tower body, decrease the tower body displacement of cross-arm direction, ensure that line security runs.
[accompanying drawing explanation]
Fig. 1 is the single line drawing of commutation tower in 330kV transmission line of alternation current of the present utility model;
Fig. 2 is the conducting wire hanging point structure top view of the utility model commutation tower;
In figure: 11, tower head; 12, tower body; 13, tower leg; 14, ground wire cross-arm; 15, wire cross-arm; 161, alternating current circuit steel tower cross-arm and tower body junction; 162, ground wire cross-arm and tower body junction; 17, hanging wire steel plate.
[detailed description of the invention]
For enabling above-mentioned purpose of the present utility model, feature and advantage become apparent more, are described in further detail the utility model below in conjunction with the drawings and specific embodiments.
With reference to Fig. 1, it is the single line drawing of commutation tower in 330kV transmission line of alternation current of the present utility model.
Described commutation tower comprises: ground wire cross-arm 14, wire cross-arm 15, tower head 11, tower body 12 and tower leg 13.
Described ground wire cross-arm 14 is arranged on described tower tower head 11 top.Described ground wire cross-arm 14 comprises Liang Ge branch, lays respectively at the left and right sides on described tower head top, and on it, plane is trapezoidal for closing up, to tower head the right and left horizontal stretching.
Described ground wire cross-arm 14 is for hanging ground wire, opposite side phase transmission pressure shields, and adopt zero degree shielding angle, namely right ground wire hanging point be not less than to the distance A1 of tower body axis on the right side of conducting wire hanging point to the distance B1 of tower body axis, C1, D1, E1, F1, G1; Left ground wire hanging point is not less than left lead hanging point to the distance E2 of tower body axis, F2, G2 to the distance A2 of tower body axis.
Described wire cross-arm 15 is positioned at described tower head 11 bottom.Described wire cross-arm 15 comprises nine branches for hanging nine limit phase transmission pressure and wire jumpers; Nine branches lay respectively at the left and right sides of described tower head bottom, its lower plane is rectangle, and to tower head the right and left horizontal stretching, nine branches adopt six layers of cross-arm erection, wherein three layers of cross-arm include the asymmetrical Liang Ge branch in left and right, and other three layers include towards the same side branch.And left conducting wire hanging point is greater than right conducting wire hanging point to the distance E1 of tower body axis, F1, G1 respectively to the distance E2 of tower body axis, F2, G2.
The main material of described commutation tower adopts high-strength angle steel.
Preferentially, side, the exterior angle wire of described commutation tower all adopts two I string rigid jumper, decreases string accident, reduces windage yaw discharge probability, ensured the safe operation of engineering.
Preferably, institute's commutation tower arranges two half space.For High aititude anoxic, the features such as effect is serious fall in work, for guarantee group pylon informant person and maintainer fully have a rest and personal safety, be all provided with half space at alternating current circuit steel tower cross-arm and tower body junction 161 and ground wire cross-arm and tower body junction 162 first.
Preferably, the wire hitch point of described commutation tower and the ground wire hanging point GD link plate gold utensil that all adopts stress performance superior.
Conducting wire hanging point component of the present utility model is hanging wire steel plate, and as shown in Figure 2, connection tower gold utensil is associated on hanging wire steel plate 17, and hanging wire steel plate 17 is linked on wire cross-arm 15 by Vertical dimension bolt.Adopt this structure, decrease the welding job at hanging point place, for the line steel tower under the low temperature condition of High aititude, effectively can strengthen the stress-bearing capability of hanging wire node, ensure the requirements such as the intensity of hanging wire node.
Preferably, described commutation tower tower leg 13 adopts complete unequel leg extension, farthest decreases earthwork evacuation amount and soil erosion, protects the ecological environment of Qinghai-xizang Plateau Region fragility.
Preferably, commutation tower adopts rectangle tower body, improves cross-arm direction tower body rigidity, reduces tower body displacement, also reduce steel material simultaneously.
Above content is the further description done utility model in conjunction with concrete preferred embodiment; can not assert that detailed description of the invention of the present utility model is only limitted to this; for the utility model person of an ordinary skill in the technical field; without departing from the concept of the premise utility; some simple deduction or replace can also be made, all should be considered as belonging to the scope of patent protection that the utility model is determined by submitted to claims.

Claims (10)

1. high altitude localities 330kV exchanges three loop transmission line commutation towers, it is characterized in that: described commutation tower comprises ground wire cross-arm (14), wire cross-arm (15), tower head (11), tower body (12) and tower leg (13);
Tower head (11), tower body (12) are connected successively with tower leg (13);
Described ground wire cross-arm (14) is arranged on described tower head (11) top, for hanging ground wire; Ground wire cross-arm (14) comprises the Liang Ge branch laying respectively at the left and right sides, described tower head top, and the upper plane of ground wire cross-arm (14) is trapezoidal for closing up, to tower head the right and left horizontal stretching;
Described wire cross-arm (15) is positioned at described tower head bottom, and wire cross-arm (15) comprises nine branches for hanging nine limit phase transmission pressure and wire jumpers; Wire cross-arm (15) nine branches lay respectively at the left and right sides of tower head (11) bottom, and wire cross-arm (15) lower plane is rectangle, to tower head the right and left horizontal stretching;
The main material of commutation tower adopts high-strength angle steel.
2. high altitude localities 330kV according to claim 1 exchanges three loop transmission line commutation towers, it is characterized in that: nine branches of described wire cross-arm (15) adopt six layers of cross-arm erection, wherein three layers of cross-arm include the asymmetrical Liang Ge branch in left and right, and other three layers include towards the same side branch.
3. high altitude localities 330kV according to claim 1 exchanges three loop transmission line commutation towers, it is characterized in that: described ground wire cross-arm (14) is zero degree shielding angle to wire.
4. high altitude localities 330kV according to claim 1 exchanges three loop transmission line commutation towers, it is characterized in that: described wire cross-arm (15) is rectangle cross-arm.
5. the high altitude localities 330kV according to any one of Claims 1 to 4 exchanges three loop transmission line commutation towers, it is characterized in that: wire hitch point and ground wire hanging point adopt link plate gold utensil and strain insulator string to connect to form.
6. high altitude localities 330kV according to claim 1 exchanges three loop transmission line commutation towers, it is characterized in that: side, exterior angle wire adopts two I string rigid jumper.
7. high altitude localities 330kV according to claim 5 exchanges three loop transmission line commutation towers, it is characterized in that: the component at conducting wire hanging point place adopts hanging wire steel plate (17), and hanging wire steel plate (17) is linked on wire cross-arm (15) by Vertical dimension bolt.
8. high altitude localities 330kV according to claim 5 exchanges three loop transmission line commutation towers, it is characterized in that: at wire cross-arm (15) and tower body (12) junction, ground wire cross-arm (14), tower body (12) junction is provided with half space.
9. high altitude localities 330kV according to claim 5 exchanges three loop transmission line commutation towers, it is characterized in that: described tower leg (13) adopts complete unequel leg extension.
10. high altitude localities 330kV according to claim 5 exchanges three loop transmission line commutation towers, it is characterized in that: described tower body (12) adopts square-section.
CN201521081146.XU 2015-12-22 2015-12-22 High -altitude area 330kV exchanges three return circuit transmission line commutation towers Active CN205224799U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105464448A (en) * 2015-12-22 2016-04-06 中国电力工程顾问集团西北电力设计院有限公司 330 kV AC three-loop power transmission line commutation tower in high altitude areas
CN107816245A (en) * 2017-12-01 2018-03-20 绍兴大明电力设计院有限公司 Transmission line of electricity Petronas Towers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105464448A (en) * 2015-12-22 2016-04-06 中国电力工程顾问集团西北电力设计院有限公司 330 kV AC three-loop power transmission line commutation tower in high altitude areas
CN107816245A (en) * 2017-12-01 2018-03-20 绍兴大明电力设计院有限公司 Transmission line of electricity Petronas Towers

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