CN204299268U - A kind of mixed pressure three loop steel tube tower - Google Patents
A kind of mixed pressure three loop steel tube tower Download PDFInfo
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- CN204299268U CN204299268U CN201420757552.2U CN201420757552U CN204299268U CN 204299268 U CN204299268 U CN 204299268U CN 201420757552 U CN201420757552 U CN 201420757552U CN 204299268 U CN204299268 U CN 204299268U
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Abstract
The utility model discloses a kind of mixed pressure three loop steel tube tower;? include tower head, tower body and tower leg, described tower head includes upper frame cross-arm and is positioned at four layers of cross-arm of upper frame mould load below, the end of upper frame cross-arm is provided with ground wire hanging point, upper frame cross-arm is also provided with conducting wire hanging point, described conducting wire hanging point and ground wire hanging point are staggered, three layers of cross-arm below upper frame cross-arm all arrange conducting wire hanging point at the two ends of cross-arm, being positioned at orlop wire cross-arm is one-sided cross-arm, it is distributed in the side of steel tube tower, is provided with the conducting wire hanging point of thereon.The utility model has the advantage that layout pattern is reasonable, tower head arranges more compact; Meanwhile, by reducing whole tower height degree, effectively reduce tower body wind load, comprehensive economic index is more superior; By arranging narrow Ji Genkai, have improve corridor utilization rate, economize the land resource, the advantage such as protection of the environment.
Description
Technical field
The utility model relates to a kind of line steel tower, particularly a kind of mixed pressure three loop steel tube tower.
Background technology
Along with Chinese society, expanding economy and the environmental protection requirement to power transmission line corridor improves day by day, transmission line of electricity adopts multi-circuit lines on the same tower technology to become inevitable, especially, for economically developed, that soil is expensive, house is dense area, obvious economic benefit and social benefit is had more.The structural configuration that usual multiloop pylon often adopts has following features:
(1) the ground wire cross-arm of conventional multiloop pylon and wire cross-arm are due to the control by lead wire and earth wire wire spacing, the absolute version that many both employings separate, its shortcoming is that whole tower height degree is higher, with lead wire and earth wire compared with the integrated cross-arm of a upper frame, many individual cross-arms, therefore cause steel tower weight larger;
(2) the many employings of each phase conductor are arranged vertically, and therefore whole tower height degree is higher, increases the wind effect of tower body, increase steel quantity consumption;
(3) the whole tower height degree of conventional multiloop pylon and root open ratio generally at 4-6, because whole tower height degree is higher, cause root to be opened comparatively large, take up an area limited regional applicability not strong for city line.
(4) each loop voltage grade of conventional multiloop pylon is general all consistent, if this just causes circuit to occur mixed pressure situation, needs frame separately to found steel tower, adds line corridor width, significantly increases construction costs.
(5) conventional multiloop pylon conducting wire hanging point generally has I to go here and there and V goes here and there two kinds of modes, and employing V string mode feature is that cross-arm length is longer, and line corridor width is larger.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art part, and the mixed pressure three loop steel tube tower providing a kind of and reduce tower height, transmission line of electricity code requirement can be met.
A kind of mixed pressure three loop steel tube tower, include tower head, tower body and tower leg, described tower head includes upper frame cross-arm and is positioned at four layers of cross-arm of upper frame mould load below, the end of upper frame cross-arm is provided with ground wire hanging point, upper frame cross-arm is also provided with conducting wire hanging point, described conducting wire hanging point and ground wire hanging point are staggered, three layers of cross-arm below upper frame cross-arm all arrange conducting wire hanging point at the two ends of cross-arm, being positioned at orlop wire cross-arm is one-sided cross-arm, it is distributed in the side of steel tube tower, be provided with the conducting wire hanging point of thereon, the cross-arm of one-sided cross-arm and adjacent last layer forms the loop of an electric pressure, the cross-arm and the top cross-arm that are positioned at upper two layers form more high-grade voltage circuit.
Mixed pressure three loop of the present utility model steel tube tower, by structural configuration cleverly, on the one hand the ground wire cross-arm in the middle of prior art and top layer wire cross-arm are merged into one, under guarantee ground wire and wire meet the prerequisite of safety standard, greatly can reduce again the tower height of whole steel tube tower, thus avoid the harm such as thunderbolt, storm wind, also can reduce the mixed pressure three loop steel tube tower of overall cost simultaneously.
Described upper frame cross-arm ground wire hanging point and conducting wire hanging point staggered for or for spatially to stagger, or to stagger for plane.
Stagger to refer to and all stagger on three directions in space in described space, plane staggers, for stagger on two change in coordinate axis direction of coordinate.
The vertical section shape of described upper frame cross-arm is inverted trapezoidal, and trapezoidal going to the bottom is positioned at top, and trapezoidal upper base is positioned at below, and ground wire hanging point is arranged at trapezoidal two outer ends of going to the bottom, on the upper base that conducting wire hanging point is then arranged at isosceles trapezoid or its two waist.
The vertical section of the tower body of described steel tube tower is isosceles trapezoidal structure, and its upper base width is 1750mm-2000mm, and width of going to the bottom is 6292mm-7000mm
The width of described steel tube tower tower leg bottom is 6292mm-7000mm.
Because the ground wire cross-arm at top and the wire cross-arm of upper frame unite two into one by the utility model, therefore the height of whole steel tube tower can be reduced, thus the root of tower leg is opened be arranged on a less value, thus reach the object of floor space, realize the narrow base steel tube tower of structure.
The main material of described tower body is that plurality of sections of steel pipes is formed, and adopt W.N flange to connect between plurality of sections of steel pipes, the oblique material of tower body and auxiliary material are equal leg angle or steel pipe, adopt gusset plate to be connected with between main material.
The voltage levels loop be positioned on the cross-arm of upper two layers and upper frame cross-arm adopts mode arranged vertically to arrange; Being positioned at lower two layers loop then adopts the mode of inverted triangle to arrange.
The more high-grade voltage circuit be positioned at above is 500kV, and the electric pressure loop being positioned at lower floor is 220kV.
In sum, the utility model following advantage compared to existing technology:
Mixed pressure three loop of the present utility model steel tube tower,
(1) optimally line bracket layout pattern: meeting under the prerequisite that electric insulation coordinates and lightning Protection Design requires, the vertical height of suspension string and horizontal-shift is utilized to carry out satisfied corresponding electric clearance requirement, ground wire and upper phase conductor cross-arm are arranged in same cross-arm by the upper frame after optimization, relative to earth wire support independently traditional pylon, this structural system Path of Force Transfer is more directly clear, effectively reduces the action effect of ground line load.
(2) cross-arm arrange more reasonable: voltage levels two loops being positioned at upper strata adopt arranged vertically, and the electric pressure being positioned at lower floor adopts inverted triangle arrangement, all more arranged verticallyly than traditional each loop reduce whole tower height degree, reduce body cost.
(3) adopt narrow base tower structure, floor space is little, and width of corridor is little, is applicable to city line and takes up an area limited area.
(4) applicability is strong: arranged by mixed pressure, under the interference of power frequency electric field, power frequency magnetic field, radio interference and audible noise all meets relevant requirements prerequisite, the narrow base steel tube tower in mixed pressure three loop after Optimal improvements, two different electric pressures can be arranged with tower, effective saving width of corridor, applicability is strong.
(5) occupation of land is reduced: wire employing I string is arranged vertically effectively reduces cross-arm length, reduces width of corridor, reduces overhead transmission line floor space.
(6) comprehensive economic index is more superior: by by ground wire and wire integrity on a cross-arm, reduce the height of earth wire support; Arranged the loop of low-voltage by del, reduce whole tower height degree; Adopt the main material of steel pipe, utilize the feature that its wind resistance is superior, can reduce wind effect, above method all significantly reduces the action effect of external load, reduces comprehensive cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the mixed pressure three loop steel tube tower of the utility model embodiment.
Ground wire hanging point on the left of label declaration A1-, ground wire hanging point on the right side of A2-, upper phase conductor on the left of B1-, upper phase conductor on the right side of B2-, phase conductor on the left of C1-500kV, phase conductor on the right side of C2-500kV, lower phase conductor on the left of D1-500kV, lower phase conductor on the right side of D2-500kV, E1-220kV conducting wire hanging point 1, E2-220kV conducting wire hanging point 2, E3-220kV conducting wire hanging point 3, the main material of 1-steel pipe, 2-W.N flange.
Detailed description of the invention
Below in conjunction with embodiment, the utility model is described in more detail.
Embodiment 1
As shown in Figure 1, the utility model is specifically described with the narrow base steel tube tower citing in 500kV and 220kV mixed pressure three loop, comprises tower head, tower body and tower leg.Described tower head is made up of upper frame cross-arm and four layer conductor cross-arms.Symmetrical upper frame cross-arm is all for arranging phase conductor hanging point (B1 and B2) on ground wire hanging point (A1 and A2) and 500kV.Symmetrical second layer cross-arm is used for arranging 500kV conducting wire hanging point (C1 and C2), symmetrical third layer cross-arm is used for arranging 500kV conducting wire hanging point (D1 and D2), symmetrical 4th layer of cross-arm is used for arranging 220kV conducting wire hanging point (E1 and E2), and layer 5 cross-arm is used for arranging phase conductor hanging point under 220kV.
Main material adopts the steel pipe (in figure signal number 1) of Q420B or Q345B material, and each section connects (illustrate in figure number 2) with hub W.N flange; Oblique material and auxiliary material adopt equal leg angle or the steel pipe of Q235B or Q345B, are connected by gusset plate with main material.
Tower leg adopts flat leg, and root is opened, and (width of leg lower end) is 6292mm-7000mm.
The foregoing is only preferred embodiment of the present utility model, all equalizations done according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
It is same as the prior art that the present embodiment does not state part.
Claims (7)
1. a mixed pressure three loop steel tube tower, include tower head, tower body and tower leg, it is characterized in that: described tower head includes upper frame cross-arm and is positioned at four layers of cross-arm of upper frame mould load below, the end of upper frame cross-arm is provided with ground wire hanging point, upper frame cross-arm is also provided with conducting wire hanging point, described conducting wire hanging point and ground wire hanging point are staggered, three layers of cross-arm below upper frame cross-arm all arrange conducting wire hanging point at the two ends of cross-arm, being positioned at orlop wire cross-arm is one-sided cross-arm, it is distributed in the side of steel tube tower, be provided with the conducting wire hanging point of thereon, the cross-arm of one-sided cross-arm and adjacent last layer forms the loop of an electric pressure, the cross-arm and the top cross-arm that are positioned at upper two layers form more high-grade voltage circuit.
2. mixed pressure three loop according to claim 1 steel tube tower, is characterized in that: described upper frame cross-arm ground wire hanging point and conducting wire hanging point staggered for or for spatially to stagger, or to stagger for plane.
3. mixed pressure three loop according to claim 2 steel tube tower, it is characterized in that: the vertical section shape of described upper frame cross-arm is inverted trapezoidal, trapezoidal going to the bottom is positioned at top, trapezoidal upper base is positioned at below, ground wire hanging point is arranged at trapezoidal two outer ends of going to the bottom, on the upper base that conducting wire hanging point is then arranged at isosceles trapezoid or its two waist.
4. mixed pressure three loop according to claim 3 steel tube tower, is characterized in that: the vertical section of the tower body of described steel tube tower is isosceles trapezoidal structure, and its upper base width is 1750mm-2000mm, and width of going to the bottom is 6292mm-7000mm.
5. mixed pressure three loop according to claim 4 steel tube tower, is characterized in that: the width of described steel tube tower tower leg bottom is 6292mm-7000mm.
6. mixed pressure three loop according to claim 5 steel tube tower, it is characterized in that: the main material of described tower body is that plurality of sections of steel pipes is formed, adopt W.N flange to connect between plurality of sections of steel pipes, the oblique material of tower body and auxiliary material are equal leg angle or steel pipe, adopt gusset plate to be connected with between main material.
7. mixed pressure three loop according to claim 6 steel tube tower, is characterized in that: the voltage levels loop be positioned on the cross-arm of upper two layers and upper frame cross-arm adopts mode arranged vertically to arrange; Being positioned at lower two layers loop then adopts the mode of inverted triangle to arrange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420757552.2U CN204299268U (en) | 2014-12-04 | 2014-12-04 | A kind of mixed pressure three loop steel tube tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420757552.2U CN204299268U (en) | 2014-12-04 | 2014-12-04 | A kind of mixed pressure three loop steel tube tower |
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| Publication Number | Publication Date |
|---|---|
| CN204299268U true CN204299268U (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420757552.2U Expired - Fee Related CN204299268U (en) | 2014-12-04 | 2014-12-04 | A kind of mixed pressure three loop steel tube tower |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178685A (en) * | 2015-09-10 | 2015-12-23 | 安徽华电工程咨询设计有限公司 | Novel three-circuit power transmission tower |
| 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 |
| CN108868288A (en) * | 2018-06-28 | 2018-11-23 | 海宁市金能电力实业有限公司 | A kind of steel pipe pole of distribution line |
-
2014
- 2014-12-04 CN CN201420757552.2U patent/CN204299268U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105178685A (en) * | 2015-09-10 | 2015-12-23 | 安徽华电工程咨询设计有限公司 | Novel three-circuit power transmission tower |
| 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 |
| CN108868288A (en) * | 2018-06-28 | 2018-11-23 | 海宁市金能电力实业有限公司 | A kind of steel pipe pole of distribution line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 350003 Gulou District, Fujian, Fuzhou No. 54 Road, No. 257 Patentee after: STATE GRID FUJIAN ELECTRIC POWER Co.,Ltd. Patentee after: FUJIAN YONGFU POWER ENGINEERING Co.,Ltd. Address before: 350003 Gulou District, Fujian, Fuzhou No. 54 Road, No. 257 Patentee before: STATE GRID FUJIAN ELECTRIC POWER Co.,Ltd. Patentee before: FUJIAN YONGFU PROJECT CONSULTANT Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 Termination date: 20211204 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |