CN105257068A - Direct current transmission line Z-shaped iron tower in mountainous area - Google Patents
Direct current transmission line Z-shaped iron tower in mountainous area Download PDFInfo
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- CN105257068A CN105257068A CN201510630737.6A CN201510630737A CN105257068A CN 105257068 A CN105257068 A CN 105257068A CN 201510630737 A CN201510630737 A CN 201510630737A CN 105257068 A CN105257068 A CN 105257068A
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Abstract
The invention discloses a direct current transmission line Z-shaped iron tower in a mountainous area. The direct current transmission line Z-shaped iron tower in the mountainous area comprises a tower leg (1) and a tower body (2). The tower leg (1) is fixedly connected to the lower portion of the tower body (2). The direct current transmission line Z-shaped iron tower in the mountainous area is characterized in that an upper guide wire cross arm (6) and an upper ground wire cross arm (5) are arranged on the top of the tower body (2); the upper ground wire cross arm (5) is positioned above the upper guide wire cross arm (6); a lower guide wire cross arm (3) and a lower ground wire cross arm (4) are arranged on the middle upper portion of the tower body (2); the lower ground wire cross arm (4) is positioned above the lower guide wire cross arm (3); the distance from the upper guide wire cross arm (6) to the ground is basically equal to the distance from the lower guide wire cross arm (3) to the ground; the tower leg (1) consists of an upper tower leg (7) and a lower tower leg (8); and the heights of the upper tower leg (7) and the lower tower leg (8) can be adjusted freely. The direct current transmission line Z-shaped iron tower in the mountainous area has the advantages that the structure is simple, wind resistance is good, the iron tower can adapt to complex terrains such as sloping fields in the mountainous area, the weight of the iron tower is reduced to a great extent, and project cost is also reduced.
Description
Technical field
The present invention relates to a kind of iron towers of overhead power transmission lines, relate in particular to a kind of mountain area DC power transmission line Z-iron tower.
Background technology
The design of mountain area DC power transmission line steel tower often needs emphasis to consider distance to the ground and windage yaw impact, at uphill side, wire distance to the ground is nearest, in order to ensure minimum distance to the ground, steel tower height will increase a lot relative to the situation on level land, and in descending side, wire distance to the ground nargin is very large.The weight of tangent tower is very large by the impact of wind load, steel tower is higher, wind load on lead wire and earth wire and tower body is larger, steel tower is also heavier, at present the broad form of single time DC power transmission line tangent tower is the horizontal "T"-shaped steel tower of two-stage both at home and abroad, and steel tower earth wire support and cross-arm are symmetrically arranged, and the lead wire and earth wire load of the steel tower left and right sides is completely the same, this design is not only wasted material but also is made steel tower descending side when wind-engaging stressed comparatively large, is unfavorable for the balance keeping steel tower.Application number is the Chinese patent of 201310692367.X, have employed the structure of tower window, although had certain lifting at anti-lightning strike tripping operation aspect of performance, but because the reason that its window shape area is large causes it to bear lateral pressure increase when in the face of strong wind, if meet freezing weather again, when icing, meet with strong wind, easily make steel tower load-bearing tower line falling cannot be made disconnected and cause the loss of power accident.
Summary of the invention
The object of the invention is to overcome above-mentioned shortcoming and a kind of structure of providing is simple, wind resistance good, can adapt to the complicated landform such as Sloping field in mountain area and largely reduce the mountain area DC power transmission line Z-iron tower that steel tower weight reduces construction costs.
Object of the present invention and solve its technical problem underlying and realize by the following technical solutions:
Mountain area of the present invention DC power transmission line Z-iron tower, comprise tower leg and tower body, tower leg is fixedly connected on the below of tower body, wherein: the top of described tower body is provided with upper conductor cross-arm and upper ground wire cross-arm, and upper ground wire cross-arm is positioned at the top of upper conductor cross-arm; The middle and upper part of described tower body is provided with lower wire cross-arm and lower ground wire cross-arm, and lower ground wire cross-arm is positioned at the top of lower wire cross-arm; Substantially equal to ground distance to ground Distance geometry lower wire cross-arm of described upper conductor cross-arm.
Above-mentioned mountain area DC power transmission line Z-iron tower, wherein: described upper ground wire cross-arm, lower ground wire cross-arm are separately fixed on upper conductor cross-arm and lower wire cross-arm;
Above-mentioned mountain area DC power transmission line Z-iron tower, wherein: described upper ground wire cross-arm and lower ground wire cross-arm are also fixedly linked with tower body;
Above-mentioned mountain area DC power transmission line Z-iron tower, wherein: described tower leg is made up of upper tower leg and lower tower leg, the height of upper tower leg and lower tower leg presses actual landform can free adjustment.
The present invention compared with prior art, has obvious beneficial effect, as can be known from the above technical solutions: the top of tower body is provided with upper conductor cross-arm and upper ground wire cross-arm, and upper ground wire cross-arm is positioned at the top of upper conductor cross-arm; The middle and upper part of described tower body is provided with lower wire cross-arm and lower ground wire cross-arm, and lower ground wire cross-arm is positioned at the top of lower wire cross-arm; Substantially equal to ground distance to ground Distance geometry lower wire cross-arm of described upper conductor cross-arm.Such design makes full use of the height of physical relief, arrangement not contour about adopting earth wire support and cross-arm, under the prerequisite that satisfied left and right two polar conductor distance to the ground and windage yaw require, reduce descending side cross-arm height, make the wind load in this side lead wire and earth wire and the wind load on cross-arm all reduce to a certain extent, thus reach the weight reducing steel tower, reduce the object of the cost of engineering.
Upper ground wire cross-arm, lower ground wire cross-arm are separately fixed on upper conductor cross-arm and lower wire cross-arm.Such design makes ground wire cross-arm and upper conductor cross-arm be integrated, lower ground wire cross-arm and lower wire cross-arm are integrated, the structure of ground wire cross-arm and upper conductor cross-arm is diminished, save making material, thus steel tower weight can be reduced, cost-saving, be applicable to the little and freezing not too serious area of wind speed and use.
Upper ground wire cross-arm and lower ground wire cross-arm are also fixedly linked with tower body.Compare with upper a kind of structure, upper conductor cross-arm is not only connected with lower wire cross-arm, lower ground wire cross-arm respectively with upper ground wire cross-arm, its one end is also fixedly connected with tower body, such design adds the anti-pressure ability that a small amount of structure but strengthens steel tower greatly, can resist larger blast and weight, thus larger at wind and that freezing weather is more serious area is very applicable.Tower leg is made up of upper tower leg and lower tower leg, and the height of upper tower leg and lower tower leg can free adjustment.Steel tower can be made to adapt to make whole steel tower maintenance level by various complicated landform by the free adjustment of two tower legs, add the compliance of steel tower.
Mountain area of the present invention DC power transmission line Z-iron tower, has that structure is simple, wind resistance good, can adapt to the complicated landform such as Sloping field in mountain area and largely reduces the feature that steel tower weight reduces construction costs.
The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Mark in figure:
1, tower leg; 2, tower body; 3, lower wire cross-arm; 4, lower ground wire cross-arm; 5, upper ground wire cross-arm; 6, upper conductor cross-arm; 7, upper tower leg; 8, lower tower leg.
detailed description of the invention:
Below in conjunction with accompanying drawing and preferred embodiment, to the mountain area DC power transmission line Z-iron tower detailed description of the invention proposed according to the present invention, structure, feature and effect thereof, be described in detail as follows.
See Fig. 1, mountain area of the present invention DC power transmission line Z-iron tower, comprise tower leg 1 and tower body 2, tower leg 1 is fixedly connected on the below of tower body 2, wherein: the top of described tower body 2 is provided with upper conductor cross-arm 6 and upper ground wire cross-arm 5, and upper ground wire cross-arm 5 is positioned at the top of upper conductor cross-arm 6; The middle and upper part of described tower body 2 is provided with lower wire cross-arm 3 and lower ground wire cross-arm 4, and lower ground wire cross-arm 4 is positioned at the top of lower wire cross-arm 3; Substantially equal to ground distance to ground Distance geometry lower wire cross-arm 3 of described upper conductor cross-arm 6; Described upper ground wire cross-arm 5, lower ground wire cross-arm 4 are separately fixed on upper conductor cross-arm 6 and lower wire cross-arm 3; Described upper ground wire cross-arm 5 and lower ground wire cross-arm 4 are also fixedly linked with tower body 2; Described tower leg 1 is made up of upper tower leg 7 and lower tower leg 8, and the height of upper tower leg 7 and lower tower leg 8 can free adjustment.
During use, after steel tower each several part is installed, regulate the tower leg 1 of steel tower, steel tower maintenance level is made by regulating the height of upper tower leg 7 and lower tower leg 8, and make this side of upper conductor cross-arm 6 of steel tower be positioned at uphill side, then according to related request by the relevant decorating position of each bar phase Electric wire support at steel tower.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, anyly do not depart from technical solution of the present invention content, the any simple modification done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (4)
1. mountain area DC power transmission line Z-iron tower, comprise tower leg (1) and tower body (2), tower leg (1) is fixedly connected on the below of tower body (2), it is characterized in that: the top of described tower body (2) is provided with upper conductor cross-arm (6) and upper ground wire cross-arm (5), and upper ground wire cross-arm (5) is positioned at the top of upper conductor cross-arm (6); The middle and upper part of described tower body (2) is provided with lower wire cross-arm (3) and lower ground wire cross-arm (4), and lower ground wire cross-arm (4) is positioned at the top of lower wire cross-arm (3); Described upper conductor cross-arm (6) to ground Distance geometry lower wire cross-arm (3) to ground distance substantially equal.
2. mountain area as claimed in claim 1 DC power transmission line Z-iron tower, is characterized in that: described upper ground wire cross-arm (5), lower ground wire cross-arm (4) are separately fixed on upper conductor cross-arm (6) and lower wire cross-arm (3).
3. mountain area as claimed in claim 1 or 2 DC power transmission line Z-iron tower, is characterized in that: described upper ground wire cross-arm (5) and lower ground wire cross-arm (4) are also fixedly linked with tower body (2).
4. mountain area as claimed in claim 1 DC power transmission line Z-iron tower, is characterized in that: described tower leg (1) is made up of upper tower leg (7) and lower tower leg (8), and the height of upper tower leg (7) and lower tower leg (8) can free adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510630737.6A CN105257068A (en) | 2015-09-29 | 2015-09-29 | Direct current transmission line Z-shaped iron tower in mountainous area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510630737.6A CN105257068A (en) | 2015-09-29 | 2015-09-29 | Direct current transmission line Z-shaped iron tower in mountainous area |
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| Publication Number | Publication Date |
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| CN105257068A true CN105257068A (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510630737.6A Pending CN105257068A (en) | 2015-09-29 | 2015-09-29 | Direct current transmission line Z-shaped iron tower in mountainous area |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB296420A (en) * | 1927-09-02 | 1928-11-15 | Blaw Knox Co | Improvements in transmission towers |
| CN102287070A (en) * | 2011-06-29 | 2011-12-21 | 浙江省电力设计院 | Z-shaped side slope tower |
| CN203160799U (en) * | 2013-02-19 | 2013-08-28 | 中国电力工程顾问集团西南电力设计院 | Single-circuit tension-resistant tower for 220kV power transmission lines in 32.5/s wind zones at altitude of below 5500m |
| CN203412347U (en) * | 2013-08-06 | 2014-01-29 | 安徽华电工程咨询设计有限公司 | Jumper wire over-wind type Z-shaped side slope power transmission line strain tower |
| CN204960466U (en) * | 2015-09-29 | 2016-01-13 | 贵州电力设计研究院 | Mountain area direct current transmission circuit Z sections tower |
-
2015
- 2015-09-29 CN CN201510630737.6A patent/CN105257068A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB296420A (en) * | 1927-09-02 | 1928-11-15 | Blaw Knox Co | Improvements in transmission towers |
| CN102287070A (en) * | 2011-06-29 | 2011-12-21 | 浙江省电力设计院 | Z-shaped side slope tower |
| CN203160799U (en) * | 2013-02-19 | 2013-08-28 | 中国电力工程顾问集团西南电力设计院 | Single-circuit tension-resistant tower for 220kV power transmission lines in 32.5/s wind zones at altitude of below 5500m |
| CN203412347U (en) * | 2013-08-06 | 2014-01-29 | 安徽华电工程咨询设计有限公司 | Jumper wire over-wind type Z-shaped side slope power transmission line strain tower |
| CN204960466U (en) * | 2015-09-29 | 2016-01-13 | 贵州电力设计研究院 | Mountain area direct current transmission circuit Z sections tower |
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Application publication date: 20160120 |
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