CN108005458A - Singly cut-off π sections towers in double loop - Google Patents
Singly cut-off π sections towers in double loop Download PDFInfo
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- CN108005458A CN108005458A CN201810021591.9A CN201810021591A CN108005458A CN 108005458 A CN108005458 A CN 108005458A CN 201810021591 A CN201810021591 A CN 201810021591A CN 108005458 A CN108005458 A CN 108005458A
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- 239000012212 insulator Substances 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000002436 steel type Substances 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 11
- 229910052742 iron Inorganic materials 0.000 abstract description 6
- 150000002505 iron Chemical class 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 14
- 239000010959 steel Substances 0.000 description 14
- 230000005540 biological transmission Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000004020 conductor Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005246 galvanizing Methods 0.000 description 2
- 239000012211 strain insulator Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/02—Structures made of specified materials
- E04H12/08—Structures made of specified materials of metal
- E04H12/10—Truss-like structures
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/24—Cross arms
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Abstract
本发明公开一种双回路单开断π型铁塔；解决的技术问题：针对现有开断形式易形成三角形地带，造成占地面积较大，杆塔数量增加，投资成本增加的技术问题。采用的技术方案：一种双回路单开断π型铁塔，包括塔架和设置在塔架上的横担；横担自塔架顶端向下间隔布置：第一横担和第二横担，在第二横担的自由端水平设置第一π接横担；第三横担和第四横担，在第四横担的自由端水平设置第二π接横担；第五横担和第六横担，在第六横担的自由端水平设置第三π接横担；第七横担和第八横担，在第八横担的自由端水平设置第四π接横担。优点，本铁塔，能够将三基分支塔才能完成的开断线路，只需要一基铁塔即可完成开断线路。
The invention discloses a double-circuit single-break π-type iron tower; the technical problem to be solved is to solve the technical problems that the existing breaking form is easy to form a triangular zone, resulting in a large occupied area, an increase in the number of poles and towers, and an increase in investment cost. The technical solution adopted: a double-circuit single-break π-shaped iron tower, including a tower and a cross-arm arranged on the tower; the cross-arms are arranged at intervals from the top of the tower downwards: the first cross-arm and the second cross-arm, The first π-connected cross-arm is arranged horizontally at the free end of the second cross-arm; the third cross-arm and the fourth cross-arm are horizontally arranged at the free end of the fourth cross-arm; the second π-connected cross-arm is horizontally arranged; the fifth cross-arm and the fourth cross-arm For the six cross-arms, the third π-connected cross-arm is arranged horizontally at the free end of the sixth cross-arm; for the seventh and eighth cross-arms, the fourth π-connected cross-arm is horizontally arranged at the free end of the eighth cross-arm. Advantages, this iron tower can break the line that can only be completed by three base branch towers, and only needs one base iron tower to complete the break line.
Description
Technical field
The present invention designs a kind of double loop and singly cut-offs π sections towers, belongs to field of electrical equipment.
Background technology
With rapid economic development, various regions power demand greatly improves, and high-tension line is also more and more intensive.By electric system
The influence of planning demand, substation site selection economize the land resource to reduce line corridor, close to existing line during usual addressing
Addressing is when conventional double back transmission line one side is cut-off, it is necessary to double using three bases to facilitate existing line to access substation after cut-offfing
Branch of a circuit tower is completed to cut-off circuit, and this form of cut-offfing easily forms gore, causes floor space larger, shaft tower quantity
Increase, cost of investment increase.
The content of the invention
The technical problems to be solved by the invention are：Open routine double back transmission line one side mentioned in the background art
, it is necessary to complete to cut-off circuit using three base branch towers, this pattern of cut-offfing easily forms gore, causes floor space when disconnected
It is larger, the increase of shaft tower quantity, the increased technical problem of cost of investment.
The object of the present invention is to propose that π sections towers are singly cut-off in a kind of double loop, making for π sections towers is singly cut-off in this double loop
It is i.e. achievable by a base steel tower with can make what conventional three base double loop branch tower of needs completed to cut-off circuit；Subtract so as to reach
The use of few branch tower, reduces land seizure, the purpose of cost saving.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
π sections towers, including pylon are singly cut-off in a kind of double loop, further include the cross-arm being arranged on pylon；Cross-arm is from pylon
The downward arranged for interval in top：
The top that first cross-arm and the second cross-arm, the first cross-arm and the second cross-arm may be contained within pylon is positioned at the two of pylon
Side, the first cross-arm and the second cross-arm are ground wire cross-arm, and the first cross-arm and the second cross-arm are generally aligned in the same plane interior；First cross-arm
Upper surface is flushed with horizontal plane, the rectangular triangle of orthographic projection of the first cross-arm, and the projection of the first cross-arm in the horizontal plane is in ladder
Shape, the rectangular cross-section of the first cross-arm；The upper surface of second cross-arm is flushed with horizontal plane, the orthographic projection rectangular three of the second cross-arm
Angular, the projection of the second cross-arm in the horizontal plane is trapezoidal, the rectangular cross-section of the second cross-arm；In the free end water of the second cross-arm
Flat to set the first π to connect cross-arm, it is vertical with the second cross-arm that the first π connects cross-arm；The orthographic projection that first π connects cross-arm is rectangular, and the first π connects
The projection of cross-arm in the horizontal plane is rectangular, and the first π connects the rectangular cross-section of cross-arm；
3rd cross-arm and the 4th cross-arm, the 3rd cross-arm and the 4th cross-arm are arranged on pylon and positioned at the first cross-arms and the
The lower section of two cross-arms, the 3rd cross-arm and the 4th cross-arm are located at the both sides of pylon, and the 3rd cross-arm and the 4th cross-arm are that upper conducting wire is horizontal
In load, the 3rd cross-arm and the 4th cross-arm are generally aligned in the same plane；The lower surface of 3rd cross-arm is flushed with horizontal plane, and the 3rd cross-arm is just
Rectangular triangle is projected, the projection of the 3rd cross-arm in the horizontal plane is rectangular, the rectangular cross-section of the 3rd cross-arm；4th cross-arm
Lower surface flushed with horizontal plane, the rectangular triangle of orthographic projection of the 4th cross-arm, the projection of the 4th cross-arm in the horizontal plane is in
Rectangle, the rectangular cross-section of the 4th cross-arm；The 2nd π is horizontally disposed with the free end of the 4th cross-arm and connects cross-arm, the 2nd π connect cross-arm with
4th cross-arm is vertical；The orthographic projection that 2nd π connects cross-arm is rectangular, and it is rectangular that the 2nd π connects the projection of cross-arm in the horizontal plane, and second
π connects the rectangular cross-section of cross-arm；
5th cross-arm and the 6th cross-arm, the 5th cross-arm and the 6th cross-arm are arranged on pylon and positioned at the 3rd cross-arms and the
The lower section of four cross-arms, the 5th cross-arm and the 6th cross-arm are located at the both sides of pylon, and the 5th cross-arm and the 6th cross-arm are that middle conducting wire is horizontal
In load, the 5th cross-arm and the 6th cross-arm are generally aligned in the same plane；The lower surface of 5th cross-arm is flushed with horizontal plane, and the 5th cross-arm is just
Rectangular triangle is projected, the projection of the 5th cross-arm in the horizontal plane is rectangular, the rectangular cross-section of the 5th cross-arm；6th cross-arm
Lower surface flushed with horizontal plane, the rectangular triangle of orthographic projection of the 6th cross-arm, the projection of the 6th cross-arm in the horizontal plane is in
Rectangle, the rectangular cross-section of the 6th cross-arm；The 3rd π is horizontally disposed with the free end of the 6th cross-arm and connects cross-arm, the 3rd π connect cross-arm with
6th cross-arm is vertical；The orthographic projection that 3rd π connects cross-arm is rectangular, and it is rectangular that the 3rd π connects the projection of cross-arm in the horizontal plane, and the 3rd
π connects the rectangular cross-section of cross-arm；
7th cross-arm and the 8th cross-arm, the 7th cross-arm and the 8th cross-arm are arranged on pylon and positioned at the 5th cross-arms and the
The lower section of six cross-arms, the 7th cross-arm and the 8th cross-arm are located at the both sides of pylon, and the 7th cross-arm and the 8th cross-arm are lower wire horizontal stroke
In load, the 7th cross-arm and the 8th cross-arm are generally aligned in the same plane；The lower surface of 7th cross-arm is flushed with horizontal plane, and the 7th cross-arm is just
Rectangular triangle is projected, the projection of the 7th cross-arm in the horizontal plane is trapezoidal, the rectangular cross-section of the 7th cross-arm；8th cross-arm
Lower surface flushed with horizontal plane, the rectangular triangle of orthographic projection of the 8th cross-arm, the projection of the 8th cross-arm in the horizontal plane is in
It is trapezoidal, the rectangular cross-section of the 8th cross-arm；The 4th π is horizontally disposed with the free end of the 8th cross-arm and connects cross-arm, the 4th π connect cross-arm with
8th cross-arm is vertical；The orthographic projection that 4th π connects cross-arm is rectangular, and it is rectangular that the 4th π connects the projection of cross-arm in the horizontal plane, and the 4th
π connects the rectangular cross-section of cross-arm；
The free end of all cross-arms is hanging wire point, passes through insulator chain connecting wire；
The hanging wire point that first π is connect on cross-arm then forms " π types " after hanging up conducting wire by insulator chain；
The hanging wire point that 2nd π is connect on cross-arm then forms " π types " after hanging up conducting wire by insulator chain；
The hanging wire point that 3rd π is connect on cross-arm then forms " π types " after hanging up conducting wire by insulator chain；
The hanging wire point that 4th π is connect on cross-arm then forms " π types " after hanging up conducting wire by insulator chain.
All cross-arms are connected to form complete steel truss frame iron tower by bolt and steel tower tower body in the present invention, and cross arm end is extension
Line point, is connected by insulator chain with conducting wire, and above-mentioned first π connects hanging wire point on cross-arm and hung up by insulator chain after conducting wire then
Form " π types "；The hanging wire point that 2nd π is connect on cross-arm then forms " π types " after hanging up conducting wire by insulator chain；3rd π connects cross-arm
On hanging wire point hung up by insulator chain and then form " π types " after conducting wire；The hanging wire point that 4th π is connect on cross-arm passes through insulator chain
Then " π types " is formed after hanging up conducting wire.
Improvement to technical solution of the present invention, cross-arm are truss of angle steel type structure.To improve the structural strength of cross-arm, at the same time
The overall weight of cross-arm is reduced, cross-arm is designed to triangular truss structure, triangular structure has higher stability, while matter
Amount is lighter.Cross-arm and tower body material use galvanizing angle steel material.
Improvement to technical solution of the present invention, all cross-arms are connected by bolt with the tower body of pylon.
According to national standard《110kV~750kV overhead transmission line design specifications》(GB 50545-2010) is guarantee phase
Safe distance between mutually, crossed crossing distance be 4m between 220kV power lines and 220kV power lines, 220kV power lines and
Crossed crossing distance is 3m between 110kV power lines.
The length of improvement to technical solution of the present invention, the first cross-arm and the second cross-arm is 6.5m, the first cross-arm and
Spacing between two cross-arms and the 3rd cross-arm and the 4th cross-arm is 4.5m.
The length of improvement to technical solution of the present invention, the 3rd cross-arm and the 4th cross-arm is 5.3m, the 3rd cross-arm and
Spacing between four cross-arms and the 5th cross-arm and the 6th cross-arm is 6.7m.
The length of improvement to technical solution of the present invention, the 5th cross-arm and the 6th cross-arm is 6.5m, the 5th cross-arm and
Spacing between six cross-arms and the 7th cross-arm and the 8th cross-arm is 6.3m.
The length of improvement to technical solution of the present invention, the 7th cross-arm and the 8th cross-arm is 6.0m.
Improvement to technical solution of the present invention, the length that the first π connects cross-arm are 5.6m, and the 2nd π connects cross-arm, the 3rd π connects horizontal stroke
The equal length that load and the 4th π connect cross-arm is 6.4m.Since the first π length for connecing cross-arm is 5.6m, the 2nd π connects cross-arm,
Three π connect cross-arm and the 4th π to connect the equal length of cross-arm be 6.4m, arrangement of conductor is changed into water in inlet wire shelves from being arranged vertically
During flat raft row, the phase spacing of conducting wire cannot meet code requirement, therefore the present invention is used not as terminal tower, only as circuit
Middle cut-offs tower use, and phase spacing can meet code requirement when the arrangement mode of conducting wire is is arranged vertically.
Compared with prior art, the present invention its advantage is：
The steel tower of the present invention, can cut-off circuit, it is only necessary to which a base steel tower can be complete by what three base branch towers could be completed
Into cut-offfing circuit.And steel tower voltage class disclosed by the invention is 220kV.
The steel tower of the present invention, meets the needs of engineering construction is singly cut-off in the increasingly frequent double loop of transmission line of electricity system.
Brief description of the drawings
Fig. 1 is the graphics that π sections towers are singly cut-off in double loop.
Fig. 2 is the front view that π sections towers are singly cut-off in double loop.
Fig. 3 is the installation diagram that the first cross-arm, the second cross-arm and the first π connect cross-arm.
Fig. 4 is the installation diagram that the 3rd cross-arm, the 4th cross-arm and the 2nd π connect cross-arm.
Fig. 5 is the installation diagram that the 5th cross-arm, the 6th cross-arm and the 3rd π connect cross-arm.
Fig. 6 is the installation diagram that the 7th cross-arm, the 8th cross-arm and the 4th π connect cross-arm.
Fig. 7 is that double loop does not cut-off conspectus.
Fig. 8 is that π link schematic diagrames are singly cut-off in double loop.
Embodiment
Technical solution of the present invention is described in detail below, but protection scope of the present invention is not limited to the implementation
Example.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with attached drawing 1- Fig. 8 and implementation
Example, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only explaining this hair
It is bright, it is not intended to limit the present invention.
Embodiment：
As shown in Figure 1, π sections towers, including pylon 9 are singly cut-off in double loop in the present embodiment, further include and be arranged on pylon 9
Cross-arm.
As shown in Figure 1, the pylon 9 in the present embodiment, the tower body of pylon is gradually tapered up from its bottom to upper end, to become the gradient
Design, uses the pylon for becoming slope design as routine techniques of the prior art.The tower body bottom end opening of the pylon of the present embodiment
Size is 9.2m to 11.8m, and the tower body top end opening size of pylon is 2.2m.The tower body angle truss structure of this pylon.This reality
Apply the stability that can ensure pylon structure similar to rectangular pyramid of pylon 9 in example.
As shown in Figure 1, the cross-arm in the present embodiment is truss of angle steel type structure.To improve the structural strength of cross-arm, at the same time
The overall weight of cross-arm is reduced, cross-arm is designed to triangular truss structure, triangular structure has higher stability, while matter
Amount is lighter.Cross-arm and tower body material use galvanizing angle steel material.
As illustrated in fig. 1 and 2, all cross-arms are connected to form complete steel truss iron by bolt and steel tower tower body in the present embodiment
Tower, cross arm end are hanging wire point, are connected by insulator chain with conducting wire, and above-mentioned first π connects hanging wire point on cross-arm 10 by exhausted
Edge substring then forms " π types " after hanging up conducting wire；2nd π connects hanging wire point on cross-arm 11 and hangs up after conducting wire then structure by insulator chain
Into " π types "；The hanging wire point that 3rd π is connect on cross-arm 12 then forms " π types " after hanging up conducting wire by insulator chain；4th π connects cross-arm
Hanging wire point on 13 then forms " π types " after hanging up conducting wire by insulator chain.
Line disconnection is a kind of common construction technology form in power engineering mesohigh transmission line of alternation current, including single loop
Double loop is formed after cut-offfing；Double loop forms three circuits after singly cut-offfing；Double loop is double cut-off after form four circuits, it is common including
Above-mentioned three kinds of forms.
It is illustrated in figure 7 double loop and does not cut-off conspectus, 14 is cross-arm in figure, and 15 be strain insulator, and 16 be the 1st
Circuit, 17 be the 2nd circuit.
Singly cut-off π sections towers and refer to that a circuit in two circuits is connect cross-arm by the π on steel tower forms in double loop
One new double loop, totally three circuits share the form of a base steel tower, this shape with the other primary Ioops that are not cut-off on steel tower
Formula hence obtains one's name as " π " word.
It is illustrated in figure 8 double loop and singly cut-offs π link schematic diagrames.14 be cross-arm in figure, and 15 be strain insulator, and 16 are
1st circuit, 17 be the 2nd circuit, and 18 connect cross-arm for π, and 19 be the 3rd circuit.
As illustrated in fig. 1 and 2, cross-arm is from the downward arranged for interval in 9 top of pylon：
As shown in Figures 2 and 3, the first cross-arm 1 and the second cross-arm 2, the first cross-arm 1 and the second cross-arm 2 are set by bolt
It is positioned at the both sides of pylon 9 in the top of pylon 9, the first cross-arm 1 and the second cross-arm 2 are ground wire cross-arm, the first cross-arm 1 and the
In two cross-arms 2 are generally aligned in the same plane；The upper surface of first cross-arm 1 is flushed with horizontal plane, the orthographic projection rectangular three of the first cross-arm 1
Angular, the projection of the first cross-arm 1 in the horizontal plane is trapezoidal, the rectangular cross-section of the first cross-arm 1；The upper surface of second cross-arm 2
Being flushed with horizontal plane, the rectangular triangle of orthographic projection of the second cross-arm 2, the projection of the second cross-arm 2 in the horizontal plane is trapezoidal, the
The rectangular cross-section of two cross-arms 2；The first π is horizontally disposed with the free end of the second cross-arm 2 and connects cross-arm 10, the first π connect cross-arm 10 with
Second cross-arm 2 is vertical；The orthographic projection that first π connects cross-arm 10 is rectangular, and it is in square that the first π, which connects the projection of cross-arm 10 in the horizontal plane,
Shape, the first π connect the rectangular cross-section of cross-arm 10.
The hanging wire point that first π is connect on cross-arm 10 then forms " π types " after hanging up conducting wire by insulator chain.
As shown in Figures 2 and 4, the 3rd cross-arm 3 and the 4th cross-arm 4, the 3rd cross-arm 3 and the 4th cross-arm 4 are set by bolt
On pylon 9 and positioned at the lower section of the first cross-arm 1 and the second cross-arm 2, the 3rd cross-arm 3 and the 4th cross-arm 4 are located at the two of pylon 9
Side, the 3rd cross-arm 3 and the 4th cross-arm 4 are upper conducting wire cross-arm, and the 3rd cross-arm 3 and the 4th cross-arm 4 are generally aligned in the same plane interior；3rd
The lower surface of cross-arm 3 is flushed with horizontal plane, the rectangular triangle of orthographic projection of the 3rd cross-arm 3, and the 3rd cross-arm 3 is in the horizontal plane
Project rectangular, the rectangular cross-section of the 3rd cross-arm 3；The lower surface of 4th cross-arm 4 is flushed with horizontal plane, and the 4th cross-arm 4 is just
Rectangular triangle is projected, the projection of the 4th cross-arm 4 in the horizontal plane is rectangular, the rectangular cross-section of the 4th cross-arm 4；The 4th
The free end of cross-arm 4 is horizontally disposed with the 2nd π and connects cross-arm 11, and it is vertical with the 4th cross-arm 4 that the 2nd π connects cross-arm 11；2nd π connects cross-arm 11
Orthographic projection it is rectangular, the 2nd π connects that the projection of cross-arm 11 in the horizontal plane is rectangular, and the 2nd π connects the rectangular cross-section of cross-arm 11.
The hanging wire point that 2nd π is connect on cross-arm 11 then forms " π types " after hanging up conducting wire by insulator chain.
As shown in figures 2 and 5, the 5th cross-arm 5 and the 6th cross-arm 6, the 5th cross-arm 5 and the 6th cross-arm 6 are set by bolt
On pylon 9 and positioned at the lower section of the 3rd cross-arm 3 and the 4th cross-arm 4, the 5th cross-arm 5 and the 6th cross-arm 6 are located at the two of pylon 9
Side, the 5th cross-arm 5 and the 6th cross-arm 6 are middle conducting wire cross-arm, and the 5th cross-arm 5 and the 6th cross-arm 6 are generally aligned in the same plane interior；5th
The lower surface of cross-arm 5 is flushed with horizontal plane, the rectangular triangle of orthographic projection of the 5th cross-arm 5, and the 5th cross-arm 5 is in the horizontal plane
Project rectangular, the rectangular cross-section of the 5th cross-arm 5；The lower surface of 6th cross-arm 6 is flushed with horizontal plane, and the 6th cross-arm 6 is just
Rectangular triangle is projected, the projection of the 6th cross-arm 6 in the horizontal plane is rectangular, the rectangular cross-section of the 6th cross-arm 6；The 6th
The free end of cross-arm 6 is horizontally disposed with the 3rd π and connects cross-arm 12, and it is vertical with the 6th cross-arm 6 that the 3rd π connects cross-arm 12；3rd π connects cross-arm 12
Orthographic projection it is rectangular, the 3rd π connects that the projection of cross-arm 12 in the horizontal plane is rectangular, and the 3rd π connects the rectangular cross-section of cross-arm 12.
The hanging wire point that 3rd π is connect on cross-arm 12 then forms " π types " after hanging up conducting wire by insulator chain.
As seen in figs, the 7th cross-arm 7 and the 8th cross-arm 8, the 7th cross-arm 7 and the 8th cross-arm 8 are set by bolt
On pylon 9 and positioned at the lower section of the 5th cross-arm 5 and the 6th cross-arm 6, the 7th cross-arm 7 and the 8th cross-arm 8 are located at the two of pylon 9
Side, the 7th cross-arm 7 and the 8th cross-arm 8 are lower wire cross-arm, in the 7th cross-arm 7 and the 8th cross-arm 8 are generally aligned in the same plane；7th
The lower surface of cross-arm 7 is flushed with horizontal plane, the rectangular triangle of orthographic projection of the 7th cross-arm 7, and the 7th cross-arm 7 is in the horizontal plane
Project trapezoidal, the rectangular cross-section of the 7th cross-arm 7；The lower surface of 8th cross-arm 8 is flushed with horizontal plane, and the 8th cross-arm 8 is just
Rectangular triangle is projected, the projection of the 8th cross-arm 8 in the horizontal plane is trapezoidal, the rectangular cross-section of the 8th cross-arm 8；The 8th
The free end of cross-arm 8 is horizontally disposed with the 4th π and connects cross-arm 13, and it is vertical with the 8th cross-arm 8 that the 4th π connects cross-arm 13；4th π connects cross-arm 13
Orthographic projection it is rectangular, the 4th π connects that the projection of cross-arm 13 in the horizontal plane is rectangular, and the 4th π connects the rectangular cross-section of cross-arm 13.
The hanging wire point that 4th π is connect on cross-arm 13 then forms " π types " after hanging up conducting wire by insulator chain.
According to national standard《110kV~750kV overhead transmission line design specifications》GB 50545-2010 are mutual to ensure
Between safe distance, crossed crossing distance is 4m between 220kV power lines and 220kV power lines, 220kV power lines with
Crossed crossing distance is 3m between 110kV power lines.
As shown in Fig. 2, the length of the first cross-arm 1 and the second cross-arm 2 is 6.5m, the first cross-arm 1 and the second cross-arm 2 and
Spacing between three cross-arms 3 and the 4th cross-arm 4 is 4.5m.The length of 3rd cross-arm 3 and the 4th cross-arm 4 is 5.3m, and the 3rd is horizontal
Spacing between 3 and the 4th cross-arm 4 of load and the 5th cross-arm 5 and the 6th cross-arm 6 is 6.7m.The length of 5th cross-arm 5 and the 6th cross-arm 6
Degree is 6.5m, and the spacing between the 5th cross-arm 5 and the 6th cross-arm 6 and the 7th cross-arm 7 and the 8th cross-arm 8 is 6.3m.7th is horizontal
The length of 7 and the 8th cross-arm 8 of load is 6.0m.
As shown in Fig. 2, the length that the first π connects cross-arm 10 is 5.6m, the 2nd π connects cross-arm 11, the 3rd π connects cross-arm 12 and the 4th
The equal length that π connects cross-arm 13 is 6.4m.Since the first π length for connecing cross-arm 10 is 5.6m, the 2nd π meets cross-arm 11, the 3rd π
It is 6.4m to meet 12 and the 4th π of cross-arm and connect the equal length of cross-arm 13, and arrangement of conductor is changed into inlet wire shelves from being arranged vertically
When horizontally arranged, the phase spacing of conducting wire cannot meet code requirement, therefore the present invention is used not as terminal tower, only as line
Tower use is cut-off among road, phase spacing can meet code requirement when the arrangement mode of conducting wire is is arranged vertically.
As described above, although the present invention has been represented and described with reference to specific preferred embodiment, but it must not be explained
For to the limitation of itself of the invention., can be right under the premise of the spirit and scope of the present invention that appended claims define are not departed from
Various changes can be made in the form and details for it.
Claims (8)
1. π sections towers, including pylon (9) are singly cut-off in a kind of double loop, it is characterised in that further include and be arranged on pylon (9)
Cross-arm；Cross-arm is from the downward arranged for interval in pylon (9) top：
The top that first cross-arm (1) and the second cross-arm (2), the first cross-arm (1) and the second cross-arm (2) may be contained within pylon (9) is
Positioned at the both sides of pylon (9), the first cross-arm (1) and the second cross-arm (2) are ground wire cross-arm, the first cross-arm (1) and the second cross-arm
(2) in being generally aligned in the same plane；The upper surface of first cross-arm (1) is flushed with horizontal plane, the orthographic projection rectangular three of the first cross-arm (1)
Angular, the projection of the first cross-arm (1) in the horizontal plane is trapezoidal, the rectangular cross-section of the first cross-arm (1)；Second cross-arm (2)
Upper surface is flushed with horizontal plane, the rectangular triangle of orthographic projection of the second cross-arm (2), the throwing of the second cross-arm (2) in the horizontal plane
Shadow is trapezoidal, the rectangular cross-section of the second cross-arm (2)；The first π, which is horizontally disposed with, in the free end of the second cross-arm (2) connects cross-arm
(10), it is vertical with the second cross-arm (2) to connect cross-arm (10) by the first π；The orthographic projection that first π connects cross-arm (10) is rectangular, and the first π connects horizontal stroke
The projection of load (10) in the horizontal plane is rectangular, and the first π connects the rectangular cross-section of cross-arm (10)；
3rd cross-arm (3) and the 4th cross-arm (4), the 3rd cross-arm (3) and the 4th cross-arm (4) are arranged on pylon (9) and are located at
The lower section of first cross-arm (1) and the second cross-arm (2), the 3rd cross-arm (3) and the 4th cross-arm (4) are located at the both sides of pylon (9), and the 3rd
Cross-arm (3) and the 4th cross-arm (4) are upper conducting wire cross-arm, and the 3rd cross-arm (3) and the 4th cross-arm (4) are generally aligned in the same plane interior；The
The lower surface of three cross-arms (3) is flushed with horizontal plane, and the rectangular triangle of orthographic projection of the 3rd cross-arm (3), the 3rd cross-arm (3) is in water
Projection in plane is rectangular, the rectangular cross-section of the 3rd cross-arm (3)；The lower surface of 4th cross-arm (4) is flushed with horizontal plane, the
The rectangular triangle of orthographic projection of four cross-arms (4), the projection of the 4th cross-arm (4) in the horizontal plane is rectangular, the 4th cross-arm (4)
Rectangular cross-section；The 2nd π is horizontally disposed with the free end of the 4th cross-arm (4) and connects cross-arm (11), and the 2nd π connects cross-arm (11) and the 4th
Cross-arm (4) is vertical；The orthographic projection that 2nd π connects cross-arm (11) is rectangular, and it is in square that the 2nd π, which connects the projection of cross-arm (11) in the horizontal plane,
Shape, the 2nd π connect the rectangular cross-section of cross-arm (11)；
5th cross-arm (5) and the 6th cross-arm (6), the 5th cross-arm (5) and the 6th cross-arm (6) are arranged on pylon (9) and are located at
The lower section of 3rd cross-arm (3) and the 4th cross-arm (4), the 5th cross-arm (5) and the 6th cross-arm (6) are located at the both sides of pylon (9), and the 5th
Cross-arm (5) and the 6th cross-arm (6) are middle conducting wire cross-arm, and the 5th cross-arm (5) and the 6th cross-arm (6) are generally aligned in the same plane interior；The
The lower surface of five cross-arms (5) is flushed with horizontal plane, and the rectangular triangle of orthographic projection of the 5th cross-arm (5), the 5th cross-arm (5) is in water
Projection in plane is rectangular, the rectangular cross-section of the 5th cross-arm (5)；The lower surface of 6th cross-arm (6) is flushed with horizontal plane, the
The rectangular triangle of orthographic projection of six cross-arms (6), the projection of the 6th cross-arm (6) in the horizontal plane is rectangular, the 6th cross-arm (6)
Rectangular cross-section；The 3rd π is horizontally disposed with the free end of the 6th cross-arm (6) and connects cross-arm (12), and the 3rd π connects cross-arm (12) and the 6th
Cross-arm (6) is vertical；The orthographic projection that 3rd π connects cross-arm (12) is rectangular, and it is in square that the 3rd π, which connects the projection of cross-arm (12) in the horizontal plane,
Shape, the 3rd π connect the rectangular cross-section of cross-arm (12)；
7th cross-arm (7) and the 8th cross-arm (8), the 7th cross-arm (7) and the 8th cross-arm (8) are arranged on pylon (9) and are located at
The lower section of 5th cross-arm (5) and the 6th cross-arm (6), the 7th cross-arm (7) and the 8th cross-arm (8) are located at the both sides of pylon (9), and the 7th
Cross-arm (7) and the 8th cross-arm (8) are lower wire cross-arm, and the 7th cross-arm (7) and the 8th cross-arm (8) are generally aligned in the same plane interior；The
The lower surface of seven cross-arms (7) is flushed with horizontal plane, and the rectangular triangle of orthographic projection of the 7th cross-arm (7), the 7th cross-arm (7) is in water
Projection in plane is trapezoidal, the rectangular cross-section of the 7th cross-arm (7)；The lower surface of 8th cross-arm (8) is flushed with horizontal plane, the
The rectangular triangle of orthographic projection of eight cross-arms (8), the projection of the 8th cross-arm (8) in the horizontal plane is trapezoidal, the 8th cross-arm (8)
Rectangular cross-section；The 4th π is horizontally disposed with the free end of the 8th cross-arm (8) and connects cross-arm (13), and the 4th π connects cross-arm (13) and the 8th
Cross-arm (8) is vertical；The orthographic projection that 4th π connects cross-arm (13) is rectangular, and it is in square that the 4th π, which connects the projection of cross-arm (13) in the horizontal plane,
Shape, the 4th π connect the rectangular cross-section of cross-arm (13)；
The free end of all cross-arms is hanging wire point, passes through insulator chain connecting wire；
The hanging wire point that first π is connect on cross-arm (10) then forms " π types " after hanging up conducting wire by insulator chain；
The hanging wire point that 2nd π is connect on cross-arm (11) then forms " π types " after hanging up conducting wire by insulator chain；
The hanging wire point that 3rd π is connect on cross-arm (12) then forms " π types " after hanging up conducting wire by insulator chain；
The hanging wire point that 4th π is connect on cross-arm (13) then forms " π types " after hanging up conducting wire by insulator chain.
2. π sections towers are singly cut-off in double loop as claimed in claim 1, it is characterised in that cross-arm is truss of angle steel type structure.
3. π sections towers are singly cut-off in double loop as claimed in claim 1, it is characterised in that all cross-arms pass through bolt and tower
The tower body of frame (9) is connected.
4. π sections towers are singly cut-off in double loop as claimed in claim 1, it is characterised in that the first cross-arm (1) and the second cross-arm
(2) length is 6.5m, between the first cross-arm (1) and the second cross-arm (2) and the 3rd cross-arm (3) and the 4th cross-arm (4) between
Away from for 4.5m.
5. π sections towers are singly cut-off in double loop as claimed in claim 1, it is characterised in that the 3rd cross-arm (3) and the 4th cross-arm
(4) length is 5.3m, between the 3rd cross-arm (3) and the 4th cross-arm (4) and the 5th cross-arm (5) and the 6th cross-arm (6) between
Away from for 6.7m.
6. π sections towers are singly cut-off in double loop as claimed in claim 1, it is characterised in that the 5th cross-arm (5) and the 6th cross-arm
(6) length is 6.5m, between the 5th cross-arm (5) and the 6th cross-arm (6) and the 7th cross-arm (7) and the 8th cross-arm (8) between
Away from for 6.3m.
7. π sections towers are singly cut-off in double loop as claimed in claim 1, it is characterised in that the 7th cross-arm (7) and the 8th cross-arm
(8) length is 6.0m.
8. π sections towers are singly cut-off in double loop as claimed in claim 1, it is characterised in that the length that the first π connects cross-arm (10) is
5.6m, the 2nd π connects cross-arm (11), the 3rd π connects cross-arm (12) and the 4th π to connect the equal length of cross-arm (13) be 6.4m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810021591.9A CN108005458A (en) | 2018-01-10 | 2018-01-10 | Singly cut-off π sections towers in double loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810021591.9A CN108005458A (en) | 2018-01-10 | 2018-01-10 | Singly cut-off π sections towers in double loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108005458A true CN108005458A (en) | 2018-05-08 |
Family
ID=62049963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810021591.9A Pending CN108005458A (en) | 2018-01-10 | 2018-01-10 | Singly cut-off π sections towers in double loop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108005458A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112160642A (en) * | 2020-09-23 | 2021-01-01 | 国网河北省电力有限公司邯郸供电分公司 | Double-return pi-shaped connecting tower |
| CN113969691A (en) * | 2021-11-05 | 2022-01-25 | 国网河南省电力公司经济技术研究院 | A π-connected tensile steel pipe rod |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203684771U (en) * | 2014-01-15 | 2014-07-02 | 江苏省电力设计院 | Double-circuit transmission line T-type single-side pi junction tower |
| CN105244834A (en) * | 2015-11-05 | 2016-01-13 | 国家电网公司 | Double-circuit overhead power transmission line double-T wiring tower and wiring structure thereof |
| CN207813168U (en) * | 2018-01-10 | 2018-09-04 | 国网江苏省电力公司经济技术研究院 | Singly cut-off π sections towers in double loop |
-
2018
- 2018-01-10 CN CN201810021591.9A patent/CN108005458A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203684771U (en) * | 2014-01-15 | 2014-07-02 | 江苏省电力设计院 | Double-circuit transmission line T-type single-side pi junction tower |
| CN105244834A (en) * | 2015-11-05 | 2016-01-13 | 国家电网公司 | Double-circuit overhead power transmission line double-T wiring tower and wiring structure thereof |
| CN207813168U (en) * | 2018-01-10 | 2018-09-04 | 国网江苏省电力公司经济技术研究院 | Singly cut-off π sections towers in double loop |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112160642A (en) * | 2020-09-23 | 2021-01-01 | 国网河北省电力有限公司邯郸供电分公司 | Double-return pi-shaped connecting tower |
| CN112160642B (en) * | 2020-09-23 | 2021-09-07 | 国网河北省电力有限公司邯郸供电分公司 | A double circuit Π connection tower |
| CN113969691A (en) * | 2021-11-05 | 2022-01-25 | 国网河南省电力公司经济技术研究院 | A π-connected tensile steel pipe rod |
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Application publication date: 20180508 |