CN114893052A - Ecological double-loop tangent tower adaptive to novel power system - Google Patents
Ecological double-loop tangent tower adaptive to novel power system Download PDFInfo
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- 230000003044 adaptive effect Effects 0.000 title description 2
- 235000005770 birds nest Nutrition 0.000 claims abstract description 32
- 235000005765 wild carrot Nutrition 0.000 claims abstract description 32
- 241000883966 Astrophytum capricorne Species 0.000 claims abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 32
- 229910052742 iron Inorganic materials 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 1
- 238000004891 communication Methods 0.000 abstract description 6
- 241000271566 Aves Species 0.000 description 24
- 230000003287 optical effect Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 239000002131 composite material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 241001465754 Metazoa Species 0.000 description 3
- 210000003608 fece Anatomy 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000013307 optical fiber Substances 0.000 description 3
- 244000000626 Daucus carota Species 0.000 description 2
- 208000025274 Lightning injury Diseases 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 102100020786 Adenylosuccinate synthetase isozyme 2 Human genes 0.000 description 1
- 241000511591 Ciconia boyciana Species 0.000 description 1
- 241001166194 Geranium wilfordii Species 0.000 description 1
- 241000594310 Randia aculeata Species 0.000 description 1
- 241000877344 Strophanthus divaricatus Species 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation 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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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K31/00—Housing birds
- A01K31/14—Nest-boxes, e.g. for singing birds or the like
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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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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/22—Arrangements of earthing wires suspended between mastheads
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
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Abstract
The utility model provides an adapt to novel electric power system's ecological type two return circuit tangent towers, includes tower body middle section, tower body upper segment and tower head two ground wire frames are arranged to tower head upper end goat's horn form, and two set up bridge type truss between the ground wire frame, bridge type truss is located the highest point of tangent tower to set up the nest in the highest point of this bridge type truss, just be in the below of nest sets up the hanging point of OPGW ground wire. According to the invention, the bridge-type truss is additionally arranged between the two horn-shaped ground frames at the tower heads, the middle part of the bridge-type truss is about 1.5 meters higher than the ground frames, and the bird nest is actively arranged at the highest position in the middle of the bridge-type truss, so that a basic frame is provided for nesting of large birds, the subsequent perfect nesting of the large birds is provided, and the harm to a power grid is reduced; and a hanging point of an OPGW ground wire is added below the middle part of the bridge type truss, so that the communication capacity and the thermal stability capacity are improved.
Description
Technical Field
The invention belongs to the technical field of tangent towers, and particularly relates to an ecological double-loop tangent tower suitable for a novel power system.
Background
At present, a novel power system is mainly supplied with new energy, and along with the increasing access of photovoltaic and wind power generation, 2 OPGW optical cables on an original double-loop power transmission line can not meet the communication and protection requirements of user access gradually.
Meanwhile, with the increasing volume of an electric power system, the single-phase grounding short-circuit current at the bus side is quite large, the 220kV can reach 50 kiloamperes, the 110kV voltage level reaches 30 kiloamperes, and the thermal stability of the original 2 OPGW composite optical cables can not meet the requirements gradually.
As shown in fig. 7-9, in recent years, with the increasing improvement of domestic ecological environment, birds on power transmission lines have more and more activities, large birds represented by geranium wilfordii (national first-level protected animals) like nesting at the highest point of a power transmission line tower, generally at the position of a ground wire support, and located right above a lead suspension insulator string, bird droppings or branches and the like easily cause single-phase grounding short circuit of a power grid. The ciconia boyciana is a national first-level protective animal, and measures such as bird nest dismantling are not allowed to solve the potential safety hazards.
Disclosure of Invention
The invention provides an ecological double-loop tangent tower suitable for a novel power system, and aims to solve the problems in the background technology.
The technical scheme of the invention is as follows: the tower comprises a tower body middle section, a tower body upper section and a tower head, wherein two ground wire frames are arranged at the upper end of the tower head in a horn shape, a bridge-shaped truss is arranged between the ground wire frames, the bridge-shaped truss is located at the highest position of a tangent tower, a bird nest is arranged at the highest position of the bridge-shaped truss, and a hanging point of an OPGW ground wire is additionally arranged below the bird nest.
And dense latticed supports are arranged at the bottom of the position of the bird nest on the bridge truss as supports, and dense latticed supports are arranged around the bird nest as supports.
The height of the bird nest at the highest point in the middle of the bridge truss is about 1.5 meters higher than that of the ground wire frame at the tower head.
The four peripheral surfaces and the upper surfaces of the two ground wire frames on the two sides of the tower head are all encapsulated by steel plates, so that birds are prevented from nesting above.
And a hanging point of the OPGW ground wire is respectively arranged below the two ground wire racks and is used for hanging the OPGW ground wire.
And a third cross arm is arranged at the intersection of the two ground wire racks at the tower head, and hanging points of a wire are respectively arranged below two ends of the third cross arm.
Triangular second cross arms and triangular first cross arms are arranged at the upper section of the tower body at intervals, hanging points of a lead are respectively arranged below two ends of each of the first cross arms and the second cross arms, and the length of each first cross arm is longer than that of each second cross arm.
And a conical shielding cover is arranged at each hanging point, and the upper end of each shielding cover is fixed on the iron tower through a bolt.
The shielding cover is arranged to be extensible, and is achieved by overlapping a larger part of the shielding cover on the original basis.
In the working process, the bridge-type truss is additionally arranged between the two horn-shaped ground frames at the tower heads, the middle part of the bridge-type truss is about 1.5 meters higher than the ground frames, generally, large birds like to nest at the highest point, so that the bridge-type truss is the highest position of the whole iron tower, and then the active bird nest is arranged at the highest position in the middle of the bridge-type truss, so that a basic frame is provided for nesting of the large birds, the subsequent perfect nesting of the large birds is provided, and the life of the large birds is ensured.
The hanging point of the OPGW ground wire is added below the middle part of the bridge type truss, the horizontal load generated by the hanging point of the OPGW ground wire at the position is supported by the dense grid of the lower plane of the bridge type truss to transfer force, the overall stability of the tower structure is ensured by the dense grid of the lower plane of the bridge type truss, the uniform stress of the hanging point at the position and the stability during hanging are ensured, and the hanging point of the OPGW ground wire is additionally arranged, so that the selectivity and the quantity of the OPGW ground wires can be increased when the OPGW ground wire is hung.
Through two ground wire frame installation steel sheets in tower head both sides, carry out the protection all around and the top surface, avoid birds to nest above that, also avoid birds to nest above that simultaneously, the debris whereabouts of branch or bird excrement can not lead to the fact the influence to the hanging point of OPGW ground wire and wire of below.
The utility model discloses a bird nest, including iron tower, shielding cover, point, place, the iron tower is provided with the electrical apparatus of hanging the point, the shielding cover of taper still is provided with in every top of hanging the point, and this shielding cover upper end passes through the bolt fastening on the iron tower, avoids producing any rocking when using, produces interference and influence hanging the point, secondly the size increase and decrease that the shielding cover can carry out the size according to the condition to the better adaptation should hang the condition of point, be used for sheltering from the branch of avoiding in the bird nest or all the other debris fall on the top through the electrical apparatus of below hanging the point department, guarantee the normal use of electrical apparatus.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic front view of the structure shown at B in FIG. 1;
FIG. 3 is a schematic cross-sectional view taken along the direction N-N in FIG. 2;
FIG. 4 is a schematic top view of the structure of FIG. 1 at C;
FIG. 5 is a schematic cross-sectional view taken along line M-M in FIG. 4;
FIG. 6 is a schematic cross-sectional view of a shield according to the present invention;
FIG. 7 is a schematic diagram of a conventional dual-loop linear tower configuration;
FIG. 8 is a schematic front view of the structure of FIG. 7 at A;
FIG. 9 is a schematic cross-sectional view taken along line E-E in FIG. 8;
in the figure:
1. a tower body middle section;
2. an upper section of the tower body; 21. a second cross arm; 22. a first cross arm;
3. a tower head; 31. a ground wire frame; 32. a bridge truss; 33. a bird nest; 34. a grid-like support; 35. a steel plate; 36. a third cross arm;
4. hanging points;
5. a shield cover.
Detailed Description
Referring to fig. 1-6, the tower of the invention comprises a tower middle section 1, a tower upper section 2 and a tower head 3, wherein a bridge type truss 32 is arranged between two ground frames 31 arranged in a goat horn shape at the upper end of the tower head 3, the bridge type truss 32 is positioned at the highest position of a linear tower, a bird nest 33 is arranged at the highest position of the bridge type truss 32, and a hanging point 4 of an OPGW ground wire is additionally arranged below the bird nest 33.
In this embodiment, through increasing bridge type truss 32 between two ground frames 31 of 3 goat horns on tower head, the middle part of this bridge type truss 32 is higher than ground frame about 311.5 meters, under the normal condition, general large-scale birds like to nest at the peak, thereby bridge type truss 32 is the highest point of whole iron tower, later set up initiative at this bridge type truss 32's middle highest position and set up bird's nest 33, provide basic frame for the nest of large-scale birds, supply large-scale birds to carry out subsequent perfect nest, the life of large-scale birds has been guaranteed, when having reduced birds activity, probability that bird's droppings, branches etc. drop on the wire.
Meanwhile, a hanging point 4 of an OPGW ground wire is additionally arranged below the middle part of the bridge truss 32, horizontal load generated by the hanging point 4 of the OPGW ground wire arranged at the position is supported by a dense grid on the lower plane of the bridge truss 32 to transfer force, the overall stability of a tower structure is ensured due to the existence of the dense grid support on the lower plane of the bridge truss 32, the uniform stress of the hanging point 4 at the position and the stability during hanging are ensured, the hanging point 4 of the OPGW ground wire is additionally arranged, the selection and the quantity of the OPGW ground wires during hanging are ensured, and meanwhile, a conical shielding cover 5 is further arranged above each hanging point 4 and used for shielding electric devices at the hanging point 4 below to prevent branches or other sundries in a bird nest 33 from falling above.
Dense grid-shaped supports 34 are arranged at the bottom of the positions of the bird nests 33 on the bridge truss 32 as supports, and the dense grid-shaped supports 34 are arranged around the bird nests 33 as supports. The height of the middle highest point bird nest 33 of the bridge truss 32 is about 1.5 meters higher than the ground wire frame 31 at the tower head 3.
The support made into the latticed shape is arranged around the middle point bird nest 33 of the bridge truss 32 and at the bottom of the middle point bird nest 33 to serve as the support and the protection around the bottom of the bird nest 33, so that the support is similar to the shape of the bird nest 33, large birds can be conveniently selected as nests, the subsequent nesting operation of the large birds can be conveniently carried out, the better safety of the bird nests is achieved, and the life of the birds is guaranteed. By adding the bridge-shaped truss 32 between the two horn-shaped ground frames 31 of the tower head 3, the middle part of the bridge-shaped truss 32 is about 1.5 meters higher than the ground frames 31, generally, large birds like to nest at the highest point, so that the bridge-shaped truss 32 is the highest point of the whole iron tower, and the bird nest 33 is the highest point of the bridge-shaped truss 32, thereby reducing the possibility of nesting of the large birds at other positions of the iron tower.
The peripheral surfaces and the upper surfaces of the two ground frames 31 at the two sides of the tower head 3 are all encapsulated by steel plates 35 for preventing birds from nesting above. And a hanging point 4 of an OPGW ground wire is respectively arranged below the two ground wire frames 31 and is used for hanging the OPGW ground wire.
Through installing steel sheet 35 on two ground wire frames 31 of 3 both sides in tower head, carry out the protection all around and the top surface, avoid birds to nest above that, also avoid birds to nest above that simultaneously, the debris whereabouts of branch or bird excrement can not cause the influence to hanging point 4 (being the wire on first ~ three cross arms) of below. The three OPGW ground wire suspension points 4 are arranged so that a certain point selection can be made when the OPGW ground wire is suspended and the number of OPGW ground wires can be increased.
A third cross arm 36 is arranged at the intersection of the two ground wire frames 31 of the tower head 3, and a wire hanging point 4 is respectively arranged below two ends of the third cross arm 36. Triangular second cross arms 21 and triangular first cross arms 22 are arranged at the upper section 2 of the tower body at intervals, hanging points 4 of one conducting wire are respectively arranged below two ends of each first cross arm 22 and each second cross arm 21, and the length of each first cross arm 22 is longer than that of each second cross arm 21.
In the present embodiment, three cross arms are provided at intervals on the whole iron tower, and are divided into the first cross arm 22, the second cross arm 21 and the third cross arm 36, and the hanging points 4 of one wire are provided below both ends of each cross arm for hanging the wire, and the length of the first cross arm 22 is longer than the lengths of the second cross arm 21 and the third cross arm 36, so that the two wires provided at both ends of the first cross arm 22 do not interfere with the wires hung on the upper third cross arm 36 and the lower first cross arm 22. The third cross arm 36 is located at the intersection of the two ground wire frames 31, and can transversely draw the two ground wire frames 31 arranged in a claw shape to form a triangular area, so that the triangular area can be drawn and reinforced, and the firmness of the two claw-shaped ground wire frames 31 is ensured.
A cone-shaped shielding cover 5 is arranged at each hanging point 4, and the upper end of each shielding cover 5 is fixed on the iron tower through bolts. The shield cover 5 is provided in an extensible type by superposing a larger part of the cover on the original basis.
In this embodiment, the cover 5 of taper still is provided with in every top of hanging 4, and this cover 5 upper end passes through the bolt fastening on the iron tower, avoid producing any rocking when using, produce interference and influence to hanging 4, secondly cover 5 can carry out the size increase and decrease of size according to the condition, with this the condition of hanging 4 of better adaptation, be used for sheltering from the electrical part of hanging 4 departments below through cover 5 and avoid debris such as branch or bird droppings in bird's nest 33 to fall on the top, guarantee the normal use of electrical part.
In order to ensure safety, the ADSS optical cable is not suitable to be added at important crossing positions such as railways, expressways and the like, so that the hanging point 4 of the OPGW ground wire is additionally arranged below the bird nest 33 in the design of a new tower type.
The invention has the following advantages:
one, newly-added OPGW ground wire hanging point, the communication capability is increased by 1 time
1) With the large-scale access of numerous new energy users, an OPGW (optical fiber composite overhead ground wire) hanging point is added, and the communication and protection channel of the new users is solved.
2) Because the new hanging points are higher than the hanging points of the OPGW ground wires at the two sides and are at the central part of the line, the distance from the upper conducting wire is longer, so that the OPGW ground wire at the middle part can adopt a large-section composite optical cable ground wire with more cores, and at the moment, the broken wire tension of the ground wire can be reduced as long as the safety coefficient of the composite optical cable ground wire is increased. Meanwhile, due to the adoption of an arch structure (namely a bridge type), the middle ground wire is far away from the upper conducting wire, and even if the tension of the ground wire is reduced and the sag is increased, the requirement on the safety distance of the ground wire can still be met.
3) The OPGW ground wire in the middle part can adopt a large-section composite optical cable ground wire with more cores, so the number of the optical fiber cores can be divided into two halves, wherein one half forms double channels with the left OPGW ground wire, and the other half forms double channels with the right OPGW ground wire. Thus, the communication capacity is increased by 1 time.
Secondly, improving the thermal stability of the OPGW ground wire
The original two OPGW ground wires can not meet the requirement of thermal stability gradually, and when single-phase grounding accidents are caused, optical fibers inside the OPGW are easy to damage and cannot be repaired.
The invention increases the number of OPGW ground wires, disperses the short-circuit current during single-phase grounding, and improves the capability of all the OPGW ground wires for bearing the single-phase grounding short-circuit current by nearly 1 time when the cross section of the middle OPGW ground wire is double that of the OPGW ground wires at two sides, thereby meeting the ground wire thermal stability requirement under the condition of a large-scale power grid.
Reducing electromagnetic danger influence of power transmission line on adjacent telecommunication lines
(1) The shielding coefficients t of two overhead ground wires of the same type are as follows:
in the formula:
M 1s -mutual inductance per unit length between power transmission line and ground,H/km；
L s -the self-inductance per unit length of the ground line,H/km；
R s -the effective resistance of the ground line,Ω/km；
R g -a resistance to ground across the ground line,Ω；
L-the length of the ground wire erection,km；
M ss -the mutual inductance between the ground lines,H/km；
ω-angular frequency of the voltage;
j-an imaginary number;
(2) shielding coefficients t of three overhead ground wires of the same type:
it can be known from the formula that when one ground wire is added, the shielding coefficient t of the ground wire becomes smaller, that is, the ratio of the induced electromotive force E' of the affected line with the shielding body to the induced electromotive force E of the affected line without the shielding body becomes smaller, that is, the shielding effect becomes better.
Fourthly, the lightning resistance level of the line is improved
The lightning trip-out rate n of the line with the general height and the ground wire is calculated according to the formula:
n=Nη[gP 1 +P θ P 2 +(1-g)P 3 ]
wherein,
N-number of lightning strikes per 100km line per year;
η-arc rate;
g is the striking rate of the line;
P 1 lightning-resistant level exceeding lightning strike on towerI 1 Lightning current probability of (d);
P 2 lightning-resistant level exceeding lightning strike on towerI 2 Lightning current probability of (d);
P 3 -probability of lightning current exceeding lightning withstand level when lightning strikes the lightning conductor in the centre of the span;
P θ -the rate of shielding failure.
(1) Because the middle arch part is provided with the OPGW ground wire which is higher than the OPGW ground wires at the two sides, the OPGW ground wire is easy to hit firstly during lightning stroke, and because the distance between the OPGW ground wire and the upper lead is larger than the distance between the OPGW ground wire and the upper lead at the two sides, the counterattack probability to the lead is realized when the lightning stroke line is in a span with the central ground wireP 3 The method greatly reduces the cost;
(2) because the middle part is provided with the OPGW ground wire, the distances of the OPGW ground wires at two sides can be properly increased, the horizontal distance between the two OPGW ground wires is not more than 5 times of the vertical distance between the OPGW ground wires and the lead, the OPGW ground wires at the outer side can be made into negative protection angles, and the shielding failure rate of lightning on the lead is reducedP θ 。
Fifthly, the torsion resistance of the iron tower is improved
Because the new OPGW ground wire hanging point is arranged in the tower, the new OPGW ground wire hanging point only has bending moment effect on the iron tower when the line is broken. If the OPGW cross section is increased on both sides due to communication requirements, a larger torque is added in addition to the increased bending moment when the OPGW is disconnected. Because the torsion resistance of truss structures such as an iron tower and the like is not good, an OPGW ground wire is added in the middle part, and the torsion resistance of the iron tower is improved.
In order to ensure the safety of the power grid and protect birds (particularly national first-level protection animals), the nesting position of large birds is moved to the middle position of a double-loop from a ground wire bracket by a dredging and blocking combined method, so that the damage to the power grid is reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The utility model provides an adapt to novel electric power system's two return circuit tangent towers of ecotype, includes body of a tower middle section (1), body of a tower upper segment (2) and tower head (3), its characterized in that: the tower head is characterized in that two ground wire frames (31) are arranged at the upper end of the tower head (3) and arranged in a goat's horn shape, a bridge type truss (32) is arranged between the two ground wire frames (31), the bridge type truss (32) is located at the highest position of the tangent tower, a bird nest (33) is arranged at the highest position of the bridge type truss (32), and a hanging point (4) of an OPGW ground wire is additionally arranged below the bird nest (33).
2. The ecotype double-loop linear tower adapted to the novel power system of claim 1, wherein: dense latticed supports (34) are arranged at the bottom of the position, located on the bird nest (33), of the bridge-type truss (32), and dense latticed supports (34) are also arranged around the bird nest (33).
3. The ecotype double-loop linear tower adapted to the novel power system of claim 1, wherein: the highest point in the middle of the bridge truss (32) is the position of the bird nest (33), and the height of the bird nest (33) is about 1.5 m higher than that of the ground wire frame (31).
4. The ecotype double-loop linear tower adapted to the novel power system of claim 3, wherein: the four peripheral surfaces and the upper surfaces of the two ground wire frames (31) on the two sides of the tower head (3) are all encapsulated by steel plates (35) for preventing birds from nesting above.
5. The ecotype double-loop linear tower adapted to novel power system according to any one of claims 1-4, wherein: and a hanging point (4) of the OPGW ground wire is respectively arranged below the two ground wire racks (31) and is used for hanging the OPGW ground wire.
6. The ecotype double-loop linear tower adapted to the novel power system of claim 5, wherein: and a third cross arm (36) is arranged at the intersection of the two ground wire racks (31) of the tower head (3), and hanging points (4) of one wire are respectively arranged below two ends of the third cross arm (36).
7. The ecotype double-loop linear tower adapted to the novel power system of claim 6, wherein: triangular second cross arms (21) and triangular first cross arms (22) are arranged at the upper section (2) of the tower body at intervals, hanging points (4) of one wire are respectively arranged below two ends of each of the first cross arms (22) and the second cross arms (21), and the length of each first cross arm (22) is longer than that of each second cross arm (21).
8. The ecotype double-loop linear tower adapted to the novel power system of claim 7, wherein: and a conical shielding cover (5) is arranged at each hanging point (4), and the upper end of each shielding cover (5) is fixed on the iron tower through a bolt.
9. The ecotype double-loop linear tower adapted to the novel power system of claim 8, wherein: the shielding cover (5) is made of flexible materials and is a telescopic body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210721459.5A CN114893052B (en) | 2022-06-24 | 2022-06-24 | Ecological double-loop tangent tower suitable for novel power system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210721459.5A CN114893052B (en) | 2022-06-24 | 2022-06-24 | Ecological double-loop tangent tower suitable for novel power system |
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| CN114893052A true CN114893052A (en) | 2022-08-12 |
| CN114893052B CN114893052B (en) | 2024-07-09 |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201306034Y (en) * | 2008-11-19 | 2009-09-09 | 中国电力工程顾问集团公司 | Heavy ice area vertically-arranged double-circuit tower |
| CN202142824U (en) * | 2011-05-27 | 2012-02-08 | 河南省电力公司南阳供电公司 | Bird-preventing position occupier for transmission line |
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