CN202081693U - Straight steel pipe rod of extra-high voltage DC grounding electrode line - Google Patents
Straight steel pipe rod of extra-high voltage DC grounding electrode line Download PDFInfo
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- CN202081693U CN202081693U CN2011200961053U CN201120096105U CN202081693U CN 202081693 U CN202081693 U CN 202081693U CN 2011200961053 U CN2011200961053 U CN 2011200961053U CN 201120096105 U CN201120096105 U CN 201120096105U CN 202081693 U CN202081693 U CN 202081693U
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Abstract
The utility model relates to a straight steel pipe rod of an extra-high voltage DC grounding electrode line; the straight steel pipe rod is mainly used in places where line corridors are narrow and requisition of lands is difficult; and the steel pipe rod comprises a ground wire bracket, a lead cross arm, a main rod and a bottom plate flange. The ground wire bracket of the steel pipe rod is installed at a rod top and is used for hanging a ground wire; the lead cross arm is installed at a lower part of a rod head and is used for hanging a lead; the main rod is formed by connecting coned steel pipes; sections of the coned steel pipes are connected by rigid flanges; and the main rod is connected with a foundation anchor bolt by the bottom plate flange. The steel pipe rod component is made of moderately strong steels. Utilization of the embodiment of the utility model can meet requirements of the extra-high voltage DC grounding electrode line.
Description
Technical field:
The utility model relates to transmission line of electricity steel pipe pole field, particularly relates to a kind of extra-high voltage direct-current earthing pole circuit straight line steel pipe pole.
Background technology:
Because the developable hydroelectric resources of China nearly 2/3 is in western part, coal resources 2/3 in Shanxi, Shaanxi and the Inner Mongol, but the power load of China 2/3 but is distributed in the developed area of the coastal and Beijing-Guangzhou Railway in east to the east of along the line.Like this, just need be delivered to the big area, the central and east of electricity needs to the electric weight that energy base produces.In order to reduce transmission losses, improve the transmission of electricity quality, China is developing and is building energetically UHV transmission line at present.
The extra-high voltage direct-current transmission engineering be meant ± DC transmission engineering of 800kV and above electric pressure, and the earthing pole line project is the conveyance system of extra high voltage direct current transmission line.The earthing pole circuit generally adopts overhead power transmission, promptly use electric power line pole tower that transmission pressure and ground wire are supported in the air, and the linear pattern shaft tower is used for the straightway of circuit, is the maximum shaft tower type of usage quantity in the transmission line of electricity.
At present, the direct current grounding pole line design can adopt conventional angle steel tower usually, because the design voltage grade of earthing pole circuit is lower, and tangent tower is the iron tower of stressed minimum in the circuit, so its size can be smaller.But, narrow or during when the circuit corridor through the expropriation of land area in hardship such as outskirts of a town, adopt the angle steel tower still can cause problems such as circuit corridor anxiety, floor space be excessive, be not easy to satisfy urban construction planning and environmental requirement; And there are shortcomings such as external form is not attractive in appearance, the tower material is stolen easily.And the transmission line of electricity steel pipe pole since processing and manufacturing easily, easy construction, floor space be few, the urban construction planning requirement that is content with very little, and handsome in appearance, be difficult for stolen.Therefore, when the transmission line of electricity electric pressure was lower, steel pipe pole was through being usually used in city and outskirts of a town.
At present steel pipe pole generally is used for the transmission line of alternation current, thereby design is applied to extra-high voltage direct-current earthing pole circuit and economy, steel pipe pole attractive in appearance is the problems that those skilled in the art are worth research and solve.
The utility model content:
Use conventional angle steel tower can not satisfy the construction plan of the expropriation of land area in hardship and the problem of environmental requirement for overcoming the direct current grounding pole circuit, the utility model provides a kind of extra-high voltage direct-current earthing pole circuit straight line steel pipe pole, not only satisfies the circuit requirement, and handsome in appearance.
Described straight line steel pipe pole is made up of ground line bracket, lead cross-arm, mobile jib and chassis flange.Described ground line bracket is arranged on masthead, is used to hang ground wire, and when circuit passed through the circuit of voltage levels more, steel pipe pole did not set up ground wire in passing through span; Described lead cross-arm quantity is 2, is symmetrically arranged in bar head bottom, is used to hang lead, and the lead cross-arm is a bird's wing shape tubulose cross-arm, and its cross section is a rectangle; Mobile jib is formed by conical steel pipe winding, adopts rigid flange to connect between each section conical steel pipe, mobile jib by chassis flange and steel pipe pole fundamentally foot bolt be connected; Strong steel during described steel pipe pole member material adopts.
Steel pipe pole and angle steel tower are compared, and under identical electric condition and loading condition, the head dimensions of steel pipe pole is less than the tower head size of angle steel tower, make the circuit corridor obtain compression like this; The floor space of four tower legs of angle steel tower is bigger in addition, even compare with narrow basic iron tower, the steel pipe pole floor space is also much smaller.For the linear pattern shaft tower, under the junior situation of design voltage, the shaft tower load can be smaller, at this moment the size of steel pipe pole is less, its body cost is more or less the same with the angle steel tower, if take all factors into consideration expropriation of land and removal expense again, then adopt the overall cost of steel pipe pole scheme will be lower than the angle steel tower, the advantage of steel pipe pole highlights.
In addition, the utility model is a kind of direct current grounding pole circuit steel pipe pole, lead cross-arm quantity is 2, be used for hanging two group of two split conductor, the lines load that need bear three-phase conducting wire with the alternating current circuit steel pipe pole of identical electric pressure comparatively speaking, the external loads that earthing pole circuit steel pipe pole bears is less, its scantling, specification are also less relatively, therefore, in the earthing pole circuit, use steel pipe pole more economical.
The earthing pole circuit straight line steel pipe pole that the utility model is stated compared with prior art, have following advantage: shaft has adopted the circular cross-section steel pipe, has less wind carrier model coefficient, so the wind load that bears of shaft can be smaller; Shaft adopts rigid flange to connect, the node location connection and reasonable arrangement that connects, problems such as difficult quality guarantee and intensity bottleneck are welded at the scene of both having avoided adopting prior welding mode to be easy to generate, and can save material again when avoiding structure unfavorable stress to occur; In addition, when the earthing pole circuit passed through more the voltage levels circuit, steel pipe pole did not set up ground wire in passing through span, directly utilize the ground wire of voltage levels circuit to carry out lightning protection, when saving electric wire material, also reduce the load that shaft bears, played the effect of safe province material; In addition, strong steel during steel pipe pole member material is used, preferred by to caliber and wall thickness made full use of the strength of materials, saved steel, reduced construction costs.
As seen, adopt the beneficial effects of the utility model to be: compressed the circuit corridor and the difficulty of avoiding taking over the land for use, reduced floor space in, both economic environmental protection, safety is attractive in appearance again.
Description of drawings:
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is total figure of the utility model embodiment.
Fig. 2 is the rigid flange organigram of the utility model embodiment.
Wherein: 1 is the steel pipe pole mobile jib, and 2 is the ground line bracket, and 3 is the lead cross-arm, and 4 is spacer flanger, and 5 is the chassis flange, and 6 is suspension insulator, and 6a, 6b are lead, and 7 is the cross-arm bearing.
The specific embodiment:
An embodiment of the present utility model as shown in Figure 1, it is by mobile jib 1, ground line bracket 2, two lead cross-arms 3 and connect mobile jib and the chassis flange 5 on basis is formed.Set: lead cross-arm 3 reaches and is called the bar head with top.
Wherein, ground line bracket 2 is arranged on masthead, in order to hang ground wire; Lead cross-arm 3 is arranged on bar head bottom, and quantity is two, bilateral symmetry, and it hangs lead 6a, the 6b of direct current grounding pole circuit by suspension insulator 6; Mobile jib 1 is made up of four sections conical steel pipes, between each section steel pipe and mobile jib be connected with all adopting rigid flange (4,5) fundamentally between the foot bolt, in the middle of the shaft be spacer flanger 4, what be connected with foot bolt fundamentally at the mobile jib root is chassis flange 5; Lead cross-arm 3 is connected by cross-arm bearing 7 with mobile jib 1.
Because the ground wire lines load of present embodiment is less, ground line bracket 2 adopts rectangle and trapezium channel section, and Open Side Down, can satisfy force request preferably.
In transmission line of electricity, the ground wire that ground line bracket 2 is hung is provided with for avoiding circuit to be struck by lightning destroying, and lead is shielded.Pass through other more during the voltage levels circuit at the earthing pole circuit, steel pipe pole does not set up ground wire in passing through span, directly utilize the ground wire that is passed through circuit to carry out lightning protection.
Because the steel pipe pole flexibility is bigger, be the displacement of control masthead, shaft adopts rigid flange to connect, when design spacer flanger 4 and chassis flange 5, as shown in Figure 2, in order in the distortion of control flange, can also to save material, the distribution radius d1 of flange bolt and pitch of bolts d2 carried out optimizing calculated, make flange arrangement more become reasonable.
The lead cross-arm of described embodiment is a bird's wing shape tubulose cross-arm, adopts the square-section of remaining silent, and big and less away from the cross section of root near the cross section of cross-arm root, such design can be satisfied the cross-arm force request of straight line pole preferably.Because the steel tube component tube wall of club head portion is thinner, produce the partial buckling problem for avoiding cross-arm directly to link to each other with shaft, adopt the boot-shaped bearing to connect.
In addition, strong steel during the steel pipe pole member material of described embodiment adopts, preferred by to caliber and wall thickness made full use of the strength of materials, saved steel, reduced construction costs.
Above content is to further describing that the present invention did in conjunction with concrete preferred implementation; can not assert that the specific embodiment of the present invention only limits to this; for the general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; can also make some simple deduction or replace, all should be considered as belonging to the present invention and determine scope of patent protection by claims of being submitted to.
Claims (3)
1. extra-high voltage direct-current earthing pole circuit straight line steel pipe pole is characterized in that:
Described steel pipe pole is made up of ground line bracket, lead cross-arm, mobile jib and chassis flange; Described ground line bracket is arranged on masthead, is used to hang ground wire; Described lead cross-arm is arranged on bar head bottom, is used to hang lead; Described mobile jib is formed by conical steel pipe winding, adopts rigid flange to connect between each section conical steel pipe, and mobile jib is connected with foot bolt fundamentally by the chassis flange.
2. extra-high voltage direct-current earthing pole circuit straight line steel pipe pole as claimed in claim 1, it is characterized in that: described lead cross-arm is a bird's wing shape tubulose cross-arm, and quantity is 2, is symmetrically arranged, and the cross section of cross-arm is the rectangle of remaining silent.
3. extra-high voltage direct-current earthing pole circuit straight line steel pipe pole as claimed in claim 1 is characterized in that: strong steel during described steel pipe pole member material is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200961053U CN202081693U (en) | 2011-04-02 | 2011-04-02 | Straight steel pipe rod of extra-high voltage DC grounding electrode line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200961053U CN202081693U (en) | 2011-04-02 | 2011-04-02 | Straight steel pipe rod of extra-high voltage DC grounding electrode line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202081693U true CN202081693U (en) | 2011-12-21 |
Family
ID=45342329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200961053U Expired - Lifetime CN202081693U (en) | 2011-04-02 | 2011-04-02 | Straight steel pipe rod of extra-high voltage DC grounding electrode line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202081693U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225437A (en) * | 2013-03-29 | 2013-07-31 | 国家电网公司 | Steel pipe pole structure used for charged training operation |
| WO2015000250A1 (en) * | 2013-07-04 | 2015-01-08 | 国家电网公司 | Bamboo node-emulating transmission tower made of composite material |
-
2011
- 2011-04-02 CN CN2011200961053U patent/CN202081693U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225437A (en) * | 2013-03-29 | 2013-07-31 | 国家电网公司 | Steel pipe pole structure used for charged training operation |
| WO2015000250A1 (en) * | 2013-07-04 | 2015-01-08 | 国家电网公司 | Bamboo node-emulating transmission tower made of composite material |
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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 |
Owner name: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE OF CHINA Free format text: FORMER NAME: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE, CHINA POWER ENGINEERING CONSULTING GROUP CORPORATION |
|
| CP03 | Change of name, title or address |
Address after: 710075 Xi'an province high tech Development Zone, unity South Road, No. 22, No. Co-patentee after: Changshu Fengfan Power Equipment Co., Ltd. Patentee after: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE CO., LTD. OF CHINA POWER ENGINEERING CONSULTING GROUP Address before: 710075, No. 22, unity South Road, hi tech Zone, Shaanxi, Xi'an Co-patentee before: Changshu Fengfan Power Equipment Co., Ltd. Patentee before: Northwest Electric Power Design Institute, China Power Engineering Consulting Group Corporation |
|
| CX01 | Expiry of patent term |
Granted publication date: 20111221 |
|
| CX01 | Expiry of patent term |