CN112448350B - Drilling and crossing tower capable of preventing wire jumping and wind deflection - Google Patents

Drilling and crossing tower capable of preventing wire jumping and wind deflection Download PDF

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Publication number
CN112448350B
CN112448350B CN202011330683.9A CN202011330683A CN112448350B CN 112448350 B CN112448350 B CN 112448350B CN 202011330683 A CN202011330683 A CN 202011330683A CN 112448350 B CN112448350 B CN 112448350B
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China
Prior art keywords
tower
jumper
rack
cross arm
wire
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CN202011330683.9A
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Chinese (zh)
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CN112448350A (en
Inventor
陈晨
张亮
樊庆玲
唐亚可
牛凯
裴浩威
张清峰
郭伟
魏荣生
王玉杰
陈军帅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan Dingli Pole Tower Co ltd
State Grid Corp of China SGCC
Economic and Technological Research Institute of State Grid Henan Electric Power Co Ltd
Original Assignee
Henan Dingli Pole Tower Co ltd
State Grid Corp of China SGCC
Economic and Technological Research Institute of State Grid Henan Electric Power Co Ltd
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Priority to CN202011330683.9A priority Critical patent/CN112448350B/en
Publication of CN112448350A publication Critical patent/CN112448350A/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
    • 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
    • H02G7/05Suspension arrangements or devices for electric cables or lines
    • 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
    • H02G7/14Arrangements or devices for damping mechanical oscillations of lines, e.g. for reducing production of sound
    • 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

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  • Electric Cable Installation (AREA)

Abstract

The invention discloses a drilling and crossing tower capable of preventing wire jump wind deflection, which comprises a tower body and a tower head, wherein the tower head is positioned above the tower body; the tower comprises a tower body, a tower head, a tower body, a ground wire cross arm, a first cross arm and a second cross arm are horizontally arranged in the direction from the tower head to the tower body respectively, jumper racks are arranged on two sides of the second cross arm, a plurality of obliquely arranged insulator strings and a plurality of horizontally arranged heavy hammers are arranged on the jumper racks, two ends of each insulator string are fixed to the top and the bottom of each jumper rack respectively, and the plurality of horizontally arranged heavy hammers are fixed to the bottom of each jumper rack. The whole tower height is also reduced multiply when improving wire jumper windage yaw, the cost is reduced, monolithic weight provides convenient when the staff goes up the tower and dismantles the weight moreover, has reduced the potential safety hazard.

Description

Drilling and crossing tower capable of preventing wire jumping and wind deflection
Technical Field
The invention relates to the technical field of fixed heavy hammer structures of high-voltage overhead transmission lines, in particular to a drilling tower capable of preventing wire-jumping wind deflection.
Background
The higher the altitude, the smaller the air density and absolute humidity, so that the discharge voltage of the suspension insulator string and the air gap of the power transmission line is reduced. In order to ensure the safe operation of the overhead transmission line in the high-altitude area, the swing angle of the suspension insulator string must be ensured to be within an allowable value. For the design of lines in heavy ice regions, the method of increasing the height of an iron tower and the like is often adopted in the design to avoid using a heavy hammer to limit the overlarge swing angle of the suspension insulator string as much as possible, but some lines are limited by terrain, the method of increasing the height of the iron tower and the like is not ideal and has large investment, and the heavy hammer is considered instead. CN204243690U discloses a fixed weight structure of a high-voltage overhead transmission line, which is characterized in that a plurality of weight pieces are fastened on a yoke plate and are arranged on the high-voltage overhead transmission line between a suspension insulator string and a suspension clamp. CN111725762a discloses a stacked combined weight piece and a method for manufacturing the same, but the stacked weight pieces still increase the total height of the tower and have limited effect of preventing wire-jump windage yaw.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks, the present invention provides a skip tower capable of preventing a jumper windage yaw to reduce the total height of the tower body and the jumper windage yaw.
In order to achieve the purpose, the invention adopts the following technical scheme:
the drilling and crossing tower capable of preventing wire jump wind deflection comprises a tower body and a tower head, wherein the tower head is positioned above the tower body; the tower comprises a tower body, a tower head, a tower body, a ground wire cross arm, a first cross arm and a second cross arm are horizontally arranged in the direction from the tower head to the tower body respectively, jumper racks are arranged on two sides of the second cross arm, a plurality of obliquely arranged insulator strings and a plurality of horizontally arranged heavy hammers are arranged on the jumper racks, two ends of each insulator string are fixed to the top and the bottom of each jumper rack respectively, and the plurality of horizontally arranged heavy hammers are fixed to the bottom of each jumper rack.
Optionally, the jumper rack includes a tower head jumper rack and a hard jumper rack, the tower head jumper rack is located above the hard jumper rack, one end of the insulator string is connected to the tower head jumper rack, and the other end of the insulator string is connected to the hard jumper rack; the heavy hammer is connected with the hard jumper rack through a bolt and is positioned at the bottom of the hard jumper rack.
Optionally, the shape of the heavy hammer is a rectangular plate, and the heavy hammer is made of cast iron and has specification of 400mm × 600mm × 30mm.
Optionally, the number of the heavy hammers is four.
Optionally, the angle between adjacent insulator strings is between 30 ° and 50 °.
On the governed and newly-built transmission line, the composite insulator is widely applied, but because the insulator string is light in weight, in order to prevent the dangerous situations that the insulator string is pulled up and falls off, the wire is grounded, short circuit and broken wire are caused by the large-amplitude galloping and swinging of the wire and the jumper wire under the action of strong wind, ice coating and various stresses, a heavy-hanging hammer device needs to be installed on part of strain-resistant linear towers, various external force influences on the wire are balanced and eliminated through the falling force of dead weight load of the heavy-hanging hammer device, and the safety distance between the wire and the tower, the stay wire, the spanning object, the adjacent phase ground wire and the like is ensured. Therefore, a suspension string and a suspension weight device are required to be mounted on a suspension string of a parallel lead carried by a jumper wire of a tension-resistant tower, a corner, a double-loop tower, a branch tower and a phase-change tower, which have large sag and are wound or jumped or positioned at the outer corner side of the corner and a linear tower positioned at an air port of a wind area, so as to prevent the insulator string from being pulled upwards and inhibit the swing angle of the lead from being too large. However, due to the unreasonable structure and connection mode of the suspended heavy hammer, the thickness of the heavy hammer is too large, the distance between the electric conductors is ensured, and the tower height needs to be increased; the operation process is complex, the working efficiency is low, and the time consumption is long; the danger and physical strength consumption of personnel are large: the position is frequently transferred on a tower, and a shoulder-carried heavy hammer suspension device is carried out by hands; the device has potential safety hazards in operation; windage yaw prevention effect is limited.
The invention has the following positive beneficial effects:
with insulator chain slope setting, be fixed with the multi-disc weight that the level set up bottom the jumper wire frame of fixed insulator chain, the height and the weight height of insulator chain have been reduced to increase weight, reduce the windage, reduce vertical cross-sectional area, reduce the windage, still multiple holistic tower height has been reduced when improving the jumper wire windage yaw, the cost is reduced, monolithic weight provides convenient when staff goes up the tower and dismantles the weight in addition, potential safety hazard is reduced.
Drawings
Fig. 1 is a schematic front view of a drilling tower for preventing wire jump wind deviation according to embodiment 1 of the present invention;
FIG. 2 is a schematic diagram of an exemplary weight according to embodiment 1 of the present invention;
fig. 3 is a schematic structural diagram of the side view in the direction B of fig. 1 according to embodiment 1 of the present invention.
Detailed Description
The invention will be further described with reference to some specific embodiments.
Example 1
As shown in fig. 1 to 3, the invention discloses a skip line wind deflection preventing drilling and crossing tower, which comprises a tower body and a tower head, wherein the tower head is positioned above the tower body; a ground wire cross arm 10, a first cross arm 20 and a second cross arm 30 are respectively and horizontally arranged along the direction from the tower head to the tower body, jumper racks 40 are arranged on two sides of the second cross arm 30, a plurality of obliquely arranged insulator strings 50 and a plurality of horizontally arranged hammers 60 are arranged on the jumper racks 40, two ends of the insulator strings 50 are respectively fixed with the top and the bottom of the jumper racks 40, and a plurality of hammers 60 horizontally arranged in parallel are fixed at the bottom of the jumper racks 40.
Referring to fig. 2, which is a schematic view of an exemplary stacked weight 60, the length of the jumper string is generally 2.5m, the weight 60 is stacked on the weight 60 seat and hung below the shoulder pole by parallel hanging plates, so that the charged body is invisibly increased, the height of the tower to be drilled and crossed is correspondingly increased and the cost is increased due to the fact that the charged body needs to keep a certain distance, and the vertical cross section of the weight 60 is large, the wind resistance is correspondingly increased, and the wire jump preventing windage yaw effect is limited. According to the invention, the insulator string 50 is obliquely arranged, and the plurality of weights 60 which are horizontally arranged are fixed at the bottom of the jumper wire rack 40 for fixing the insulator string 50, so that the weight is increased, the wind resistance is reduced, the integral tower height is reduced while the wind deflection resistance of the jumper wire is improved, the cost is reduced, and the single weight 60 is convenient and fast to mount and dismount the weight 60 on the tower by workers.
Specifically, referring to fig. 3, the jumper rack 40 includes a tower head jumper rack 41 and a hard jumper rack 42, the tower head jumper rack 41 is located above the hard jumper rack 42, one end of the insulator string 50 is connected to the tower head jumper rack 41, and the other end is connected to the hard jumper rack 42; the weight 60 is connected to the hard jumper rack 42 by a bolt and is located at the bottom of the hard jumper rack 42. The ground wire cross arm 10 is provided with ground wire suspension points and the first cross arm 20 and the second cross arm 30 are provided with a plurality of wire suspension points, respectively. The insulator is a tension insulator and is connected with the conducting wires on the two sides of the tower pole through a jumper string. The included angle between adjacent jumper insulator strings 50 is between 30 ° and 50 °. The weight 60 is four, is the cuboid flat plate in shape, adopts cast iron material, and the specification is 400mm 600mm 30mm, can select the weight 60 of different specifications as required. Compared with the height of the jumper string shown in FIG. 2, which is reduced by 300mm, the weight 60 disposed on the bottom horizontal single layer can be reduced by 150mm, that is, by 450mm. Effectively control and bore tower overall height more, reduce wire jumper windage yaw.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent substitutions made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims (2)

1. The drilling and crossing tower capable of preventing the wire jump wind deviation is characterized by comprising a tower body and a tower head, wherein the tower head is positioned above the tower body; a ground wire cross arm, a first cross arm and a second cross arm are respectively and horizontally arranged along the direction from the tower head to the tower body, jumper racks are arranged on two sides of the second cross arm, a plurality of obliquely arranged insulator strings and a plurality of horizontally arranged heavy hammers are arranged on the jumper racks, the number of the heavy hammers is four, two ends of each insulator string are respectively fixed with the top and the bottom of each jumper rack, and a plurality of horizontally arranged heavy hammers are fixed at the bottoms of the jumper racks; the jumper wire rack comprises a tower head jumper wire rack and a hard jumper wire rack, the tower head jumper wire rack is positioned above the hard jumper wire rack, one end of the insulator string is connected with the tower head jumper wire rack, and the other end of the insulator string is connected with the hard jumper wire rack; the heavy hammer is connected with the hard jumper rack through a bolt and is positioned at the bottom of the hard jumper rack; the shape of weight is the cuboid flat plate, adopts cast iron material, and specification 400mm x 600mm x 30mm.
2. The jump wire wind bias prevention drill tower of claim 1 wherein the included angle between adjacent insulator strings is between 30 ° and 50 °.
CN202011330683.9A 2020-11-24 2020-11-24 Drilling and crossing tower capable of preventing wire jumping and wind deflection Active CN112448350B (en)

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Application Number Priority Date Filing Date Title
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113914697A (en) * 2021-10-28 2022-01-11 华能通辽风力发电有限公司 Power transmission tower

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1066237A (en) * 1996-08-23 1998-03-06 Furukawa Electric Co Ltd:The Jumper device
JP2000032639A (en) * 1998-07-08 2000-01-28 Furukawa Electric Co Ltd:The Bird-damage preventing type jumper
CN202474755U (en) * 2011-12-08 2012-10-03 中国电力工程顾问集团公司 720/50 conducting wire jumper wire structure of extra-high voltage DC line
CN203607796U (en) * 2013-12-10 2014-05-21 国家电网公司 Jumper wire system of tension tower
CN204089125U (en) * 2014-08-26 2015-01-07 国网安徽省电力公司电力科学研究院 A kind of shaft tower list hanging point is jumped and is serially added stay pipe form bridle wire apparatus

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3362939B2 (en) * 1993-12-20 2003-01-07 旭テック株式会社 Jumper wire V suspension system
CN201369532Y (en) * 2008-12-24 2009-12-23 中国电力科学研究院 Hanger for rigid jumper system
CN103259234B (en) * 2011-08-26 2014-10-08 安徽省电力设计院 Electric transmission line rigid jumper asymmetric V-shaped insulator chain setting structure
CN202711874U (en) * 2012-07-10 2013-01-30 中国南方电网有限责任公司超高压输电公司 Suspended hard jumper insulator string for +/- 500kV double-circuit transmission lines on same tower
CN202651735U (en) * 2012-07-19 2013-01-02 安徽华电工程咨询设计有限公司 Asymmetric W-shaped wire jumper string double-circuit drilling tower
CN208797539U (en) * 2018-10-22 2019-04-26 国网江苏省电力有限公司宿迁供电分公司 It can prevent the fixed device of the wire jumper of windage yaw
CN211369746U (en) * 2019-10-23 2020-08-28 中国能源建设集团浙江省电力设计院有限公司 Winding type double-loop drilling and crossing tower on 500kV jumper wire

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1066237A (en) * 1996-08-23 1998-03-06 Furukawa Electric Co Ltd:The Jumper device
JP2000032639A (en) * 1998-07-08 2000-01-28 Furukawa Electric Co Ltd:The Bird-damage preventing type jumper
CN202474755U (en) * 2011-12-08 2012-10-03 中国电力工程顾问集团公司 720/50 conducting wire jumper wire structure of extra-high voltage DC line
CN203607796U (en) * 2013-12-10 2014-05-21 国家电网公司 Jumper wire system of tension tower
CN204089125U (en) * 2014-08-26 2015-01-07 国网安徽省电力公司电力科学研究院 A kind of shaft tower list hanging point is jumped and is serially added stay pipe form bridle wire apparatus

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