CN109672137A - It is a kind of for drawing formula ground wire grounding structure in the weather-proof steel material angle steel tower of residential area and area with less lightning activities environment - Google Patents
It is a kind of for drawing formula ground wire grounding structure in the weather-proof steel material angle steel tower of residential area and area with less lightning activities environment Download PDFInfo
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- CN109672137A CN109672137A CN201910024971.2A CN201910024971A CN109672137A CN 109672137 A CN109672137 A CN 109672137A CN 201910024971 A CN201910024971 A CN 201910024971A CN 109672137 A CN109672137 A CN 109672137A
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- 238000009413 insulation Methods 0.000 claims abstract description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 34
- 229910000870 Weathering steel Inorganic materials 0.000 claims description 19
- 229910052742 iron Inorganic materials 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 6
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 4
- 239000008397 galvanized steel Substances 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 2
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- 238000011160 research Methods 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
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Classifications
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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
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
-
- 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
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
-
- 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
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
- H02G13/40—Connection to earth
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
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- Suspension Of Electric Lines Or Cables (AREA)
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Abstract
The present invention relates to a kind of for drawing formula ground wire grounding structure in the weather-proof steel material angle steel tower of residential area and area with less lightning activities environment, solves that there has been no the defects for being directed to weather-proof steel material angle steel tower and carrying out lightning-arrest design compared with prior art.Drainage thread A, drainage thread B, drainage thread C and drainage thread D of the invention draws in tower body at the top of lightning conducter cross-arm and is connected respectively with grounding body by column foot grounding assembly after tower body, drainage thread A and drainage thread B is arranged along tower body with the tower body of the same side lightning conducter A, drainage thread C and drainage thread D arranges that drainage thread A, drainage thread B, drainage thread C and drainage thread D pass through the fixed armour clamp assembly of insulation and be mounted on tower body along tower body with the tower body of the same side lightning conducter B.Drainage thread is arranged between tower leg down conductor from the tower top lightning conducter of weather-proof angle steel tower in the present invention, reduce weather-proof angle steel tower because direct impedance it is excessive caused by back flashover probability of malfunction.
Description
Technical field
It is specifically a kind of for the resistance to of residential area and area with less lightning activities environment the present invention relates to weather-proof angle steel tower technical field
It waits in steel material angle steel tower and draws formula ground wire grounding structure.
Background technique
Environment-friendly type weathering steel is the low-alloy steel between ordinary steel and stainless steel, by the way that a small amount of alloy is added in steel
Element makes it form protective layer in metal base surface, slows down corrosion and develops in depth and breadth to material, to improve the corrosion-resistant of steel
Performance.With the continuous development of power industry and steel and iron industry, the reinforcement of environmental consciousness, tower structure uses environment-friendly type weathering steel
Material has become a kind of trend, solves environmental problem brought by common steel tower anti-corrosion, has saved steel tower steel, eliminates anti-
Rotten process, alleviates maintenance load.
For traditional circuit shaft tower, after lightning conducter or shaft tower meet with lightning stroke, lightning current leads to grounding body along shaft tower tower body.
Since traditional zinc-plated steel rod tower tower body impedance is small, the tower top current potential that lightning current is formed after route thunderbolt is mainly by ground resistance shadow
It rings.But it using the shaft tower of weather-proof steel material, is influenced by weathering steel surface corrosion layer, the gap impedance at weather-proof angle splice joint
Greatly, tower body impedance is significantly higher than zinc-plated steel rod tower, when lightning conducter or shaft tower meet with lightning stroke and not formed effective lightning channel,
Under the conditions of identical ground resistance, the tower top current potential that lightning current is formed on weather-proof steel material shaft tower is apparently higher than zinc-plated steel rod tower,
So that the probability that back flashover flashover occurs for insulator on weather-proof steel material shaft tower significantly increases, lightning fault risk is larger.
Currently, the research of steel material shaft tower weather-proof for transmission line of electricity is concentrated mainly on mechanical performance, weldability both at home and abroad
Energy, weather resistance etc., have no the research for weather-proof steel rod tower lightning protection properties.In the prior art, it is directed to keeping away for shaft tower
Thunder design is main as follows:
(1) the common lightning protection measures of transmission line of electricity are to set up lightning conducter, setting ground line etc., but these measures are after erection
To the weather-proof higher problem of angle steel tower direct impedance without being effectively improved, it only can be used as the lightning protection means of conventional galvanised steel shaft tower.
(2) though there is portion of techniques using insulating composite material as the shaft tower of tower head, by the way that thunder and lightning drainage thread mode is arranged,
Such as: utilizing hollow tubulose tower body structure, thunder and lightning drainage thread is set along tower body inboard, upright；Or the ground wire at combination tower crown end
One section of metal cross arm along conducting wire direction is drawn at metal tower body center below the center of cross-arm and compound tower head respectively, in metal
The end of cross-arm is vertically arranged thunder and lightning drainage thread.But the shaft tower of weather-proof steel material can not form the tubulose tower body knot of hollow structure
Structure, and the whole tower of weather-proof angle steel tower uses weather-proof Steel material (weathering steel is also metal material), and whole tower shows high-impedance state, with combination tower
The case where upper end uses metal material using composite material, lower end is different, cannot achieve the downlead design using metal tower body.
Simultaneously as the characteristic of weather-proof steel material, mostly uses the shaft tower shape of angle steel tower (lattice form) in practical applications
Formula, for the tower body structure of angle steel tower complexity, the country does not have the engineering construction example for completely using weathering steel angle steel tower, lacks
Few relevant engineer application experience.It is especially applied to the weather-proof steel material angle steel tower of residential area, due to the lattice of its angle steel tower
Structure type causes no image of Buddha traditional technology the same, carries out lead design using hollow tubulose tower body structure, the prior art
The lightning Protection Design that research is also difficult for weather-proof steel rod tower provides effectively guidance.
Therefore, how to develop a kind of lightning Protection Project for being directed to weather-proof steel material angle steel tower have become it is urgently to be solved
Technical problem.
Summary of the invention
The purpose of the present invention is to solve there has been no be directed to weather-proof steel material angle steel tower to take shelter from the thunder in the prior art
The defect of design provides a kind of for drawing formula ground wire grounding knot in the weather-proof steel material angle steel tower of residential area and area with less lightning activities environment
Structure solves the above problems.
To achieve the goals above, technical scheme is as follows:
It is a kind of for drawing formula ground wire grounding structure in the weather-proof steel material angle steel tower of residential area and area with less lightning activities environment, including
Weather-proof steel material angle steel tower, weather-proof steel material angle steel tower include tower body, and tower body is equipped with lightning conducter cross-arm, upper conducting wire from top to bottom
Cross-arm, middle conducting wire cross-arm and lower wire cross-arm are equipped with two lightning conducters on lightning conducter cross-arm,
It further include drainage thread, the quantity of drainage thread is 4, and drainage thread A, drainage thread B are mounted on by parallel groove clamp respectively
The enter line side of lightning conducter A, outgoing line side, drainage thread C, drainage thread D pass through respectively parallel groove clamp be mounted on lightning conducter B enter line side,
Outgoing line side, drainage thread A, drainage thread B, drainage thread C and drainage thread D draw in tower body and are run through at the top of lightning conducter cross-arm
It is connected respectively with grounding body after tower body by column foot grounding assembly, drainage thread A and drainage thread B are same with lightning conducter A along tower body
The tower body of side arranges that drainage thread C and drainage thread D are arranged along tower body with the tower body of the same side lightning conducter B, drainage thread A, drainage thread
B, drainage thread C and drainage thread D passes through the fixed armour clamp assembly of insulation and is mounted on tower body；
Drainage thread A, drainage thread B, drainage thread C and the drainage thread D passes through the fixed armour clamp assembly of insulation and is mounted on tower
On the frame of body tabula, drainage thread A and drainage thread B are mounted on the combination position of tower body tabula and drainage thread C and drainage thread D is installed
It is corresponding in mirror image in the combination position of tower body tabula.
The column foot grounding assembly includes band iron, and band iron is by the firm installation of column foot in weather-proof steel material angle steel tower
Column foot on, drainage thread A is connect by ground terminal in one end of band iron, and the other end of band iron passes through ground lead and grounding body phase
It connects.
The fixed armour clamp assembly of the insulation includes pillar, and the line seat material of pillar rear end is galvanized steel, the front of pillar
It is fixed with weathering steel block, the material of part is insulating composite material, line between weathering steel block and line seat on pillar
Folder is threadably mounted on line seat and drainage thread A is pressed on line seat by wire clamp, and the front end that weathering steel block is located on pillar is screw thread
Structure, the front end of pillar are inserted on tower body and carry out screw thread installation.
Spacing positioned at tower body longitudinal direction same position, the adjacent fixed armour clamp assembly of two insulation is 2-3m.
The tower body tabula is fork type tabula or cross tabula.
The firm fitting of the column foot includes pressing plate and fixed plate, and pressing plate and fixed plate are L shape, pressing plate and fixed plate weight
Folded installation, is equipped with felt pad between pressing plate and fixed plate.
Beneficial effect
Of the invention is a kind of for drawing formula ground wire grounding in the weather-proof steel material angle steel tower of residential area and area with less lightning activities environment
Drainage thread is arranged between tower leg down conductor from the tower top lightning conducter of weather-proof angle steel tower compared with prior art in structure, drop
Low weather-proof angle steel tower because direct impedance it is excessive caused by back flashover probability of malfunction.
The present invention is by carrying out insulating Design to fixed armour clamp assembly, so that drainage thread is formed with weather-proof steel material angle steel tower
Insulating materials physical isolation avoids generation galvanic interaction from causing to corrode；Special mounting by drainage thread in tower body tabula is set
Meter, so that 4 drainage threads are effectively fixed on the angle steel tower body of lattice form under the premise of meeting related electric specification.
The present invention draws the design down toward grounding body by drainage thread out of tower body, reduces the insulation blocking model of tower body root
It encloses, increases the difficulty of artificial destruction, adapted to the particular/special requirement that residential area tower body occupied area is small, facilities protection is difficult；Together
When, according to the skin effect of electric current, drainage thread draw out of tower body under design, lightning protection effect is relatively poor, flat suitable for year
The equal less area of thunderstorm days (area with less lightning activities) demand；But also just because of drawing lower design in its drainage thread, so that itself and power transmission line
Line pole tower ladder position is different, is more convenient for overhauling；Therefore, the present invention is more suitable for residential area and the area with less lightning activities environment of crowd massing
Under practice.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of lightning conducter cross-arm and upper conducting wire cross-arm in the present invention；
Fig. 3 is the structural schematic diagram of middle conducting wire cross-arm and lower wire cross-arm of the invention；
Fig. 4 is the structural schematic diagram of fork type tabula in the present invention；
Fig. 5 is the structural schematic diagram of cross tabula in the present invention；
Fig. 6 is the structural schematic diagram of column foot grounding assembly in the present invention；
Fig. 7 is to insulate to fix the structural schematic diagram of armour clamp assembly in the present invention；
Fig. 8 is the structural schematic diagram of the firm fitting of column foot in the present invention；
Wherein, the weather-proof steel material angle steel tower of 1-, 2- tower body, 3- lightning conducter cross-arm, the upper conducting wire cross-arm of 4-, conducting wire is horizontal in 5-
Load, the fixed armour clamp assembly of 6- lower wire cross-arm, 7- lightning conducter, 9- column foot grounding assembly, 10- insulation, 11- drainage thread A, 12- draw
Streamline B, 13- drainage thread C, 14- drainage thread D, 15- tower body tabula, 16- frame, 17- parallel groove clamp, 18- lightning conducter A, 19- are kept away
Thunder line B, 20- grounding body, 21- band iron, the firm fitting of 22- column foot, 23- ground terminal, 24- ground lead, 25- pressing plate, 26- are solid
Fixed board, 27- felt pad, 31- pillar, 32- line seat, 33- weathering steel block, 34- wire clamp.
Specific embodiment
The effect of to make to structure feature of the invention and being reached, has a better understanding and awareness, to preferable
Examples and drawings cooperation detailed description, is described as follows:
As shown in Figure 1, of the present invention a kind of in the weather-proof steel material angle steel tower of residential area and area with less lightning activities environment
Draw formula ground wire grounding structure, including weather-proof steel material angle steel tower 1.As shown in Figures 2 and 3, weather-proof steel material angle steel tower 1 includes
Tower body 2, tower body 2 are equipped with lightning conducter cross-arm 3, upper conducting wire cross-arm 4, middle conducting wire cross-arm 5 and lower wire cross-arm 6 from top to bottom, keep away
Two lightning conducters 7 are installed, two lightning conducters 7 are respectively lightning conducter A18 and lightning conducter B19 on thunder line cross-arm 3.
Here, the design using drainage thread is grounded two lightning conducters 7.According to overvoltage protection, Insulation Coordination, electricity
The basic principles such as Distribution of Magnetic Field, to shaft tower space lightning stroke electromagnetic field, tower body voltage and current point under different drainage thread quantity terms
Cloth is calculated, it was demonstrated that setting drainage thread, which can be effectively controlled, reduces weather-proof steel rod tower current potential and voltage is born in insulation；In addition, considering bar
Situations such as tower distributed inductance, electric current skin effect, engineering construction cost, the radical along the drainage thread of iron tower of power transmission line setting are got over
More, lightning protection effect is more significant, but project cost gradually rises, and therefore, under general condition, comprehensively considers lightning protection effect and engineering
Cost, in conjunction with the basic principle of optimization, after drainage thread quantity is more than four, lightning protection effect tends to definite value substantially, and engineering is made
Valence continues to grow proportionately, therefore here, the quantity of drainage thread is 4.
As shown in Fig. 2, drainage thread A11, drainage thread B12 pass through the inlet wire that parallel groove clamp 17 is mounted on lightning conducter A18 respectively
Side, outgoing line side, the enter line side of lightning conducter A18, outgoing line side are two of lightning conducter A18 for being directed to weather-proof steel material angle steel tower 1
Side.In the prior art, traditional 110kV earth wire of power transmission line is generallyd use with for OPGW by base earthing mode.And it is directed to
For weather-proof steel material angle steel tower 1, drainage thread connection is carried out for the two sides of lightning conducter A18, first is that in order to cooperate 4 drainage threads
Connection design, second is that for the connection type of unified ground wire and optical cable, convenient for construction.Similarly, drainage thread C13, drainage thread D14
Enter line side, the outgoing line side of lightning conducter B19 are mounted on by parallel groove clamp respectively.
For traditional circuit shaft tower, after lightning conducter or shaft tower meet with lightning stroke, lightning current leads to ground connection along shaft tower tower body, by
Small in zinc-plated steel rod tower tower body impedance, the tower top current potential that lightning current is formed after route thunderbolt is mainly influenced by ground resistance.It is weather-proof
Steel is the low-alloy steel between ordinary steel and stainless steel, inside be good conductor, outside corrosion layer impedance it is high, therefore
The place of two pieces of weathering steels splicing is in high-impedance state, and angle steel tower is that many pieces of weather-proof angle splice joints fit together, therefore weather-proof angle
The tower body impedance of head tower is significantly higher than zinc-plated steel rod tower, after lightning conducter or shaft tower meet with lightning stroke, in identical ground resistance condition
Under, the tower top current potential that lightning current is formed in weather-proof steel rod tower is apparently higher than zinc-plated steel rod tower, so that insulating in weather-proof steel rod tower
The probability that back flashover flashover occurs for son significantly increases, and lightning fault risk is larger.Therefore, drainage thread A11, drainage thread B12, draw
Streamline C13 and drainage thread D14 draws in tower body 2 from the top of lightning conducter cross-arm 3 and is grounded by column foot after tower body 2
Component 9 is connected with grounding body 20 respectively.
Wherein, drainage thread A11 and drainage thread B12 is arranged along tower body 2 with the tower body of the same side lightning conducter A18, that is, is drained
Line A11 and drainage thread B12 is close to the side lightning conducter A18；Drainage thread C13 and drainage thread D14 are same with lightning conducter B19 along tower body 2
The tower body of side arranges that i.e. drainage thread C13 and drainage thread D14 are close to the same side lightning conducter B19.Positioned at the longitudinal same position of tower body
It sets, the spacing of the adjacent two fixed armour clamp assemblies 10 that insulate is 2-3m.If drainage thread is arranged on the outside of the tower body, can with along tower body
The ladder position of main material arrangement mutually conflicts, and is unfavorable for transporting the upper tower maintenance of inspection personnel.Meanwhile on city small towns or road periphery, if
Drainage thread arranges that the protection scope area that then it certainly will be caused to cover when leading to underground conductor wire is larger, with city on the outside of tower body
Township's electricity consumption occupied area principle as small as possible mutually conflicts.But the skin effect transmitted according to lightning current, drainage thread arrangement are got over
Close to outside, lightning current protection effect is better, therefore, by drawing mode in tower body, is more suitable for area with less lightning activities and practices.
Different from the anti-corrosion measure of traditional Zinc-coated angle steel tower, weather-proof angle steel forms fine and close corrosion layer on surface by initial stage
To have the function that prevent internal further corrode, on the one hand, if galvanized steel is contacted with weathering steel easily occurs galvanic effect, add
The corrosion of fast galvanized steel, on the other hand, the easy ponding accelerated corrosion process of weathering steel surface corrosion layer.This phenomenon goes out in order to prevent
Existing, drainage thread A11, drainage thread B12, drainage thread C13 and drainage thread D14 pass through the fixed armour clamp assembly 10 of insulation and are mounted on tower body
On 2.
As shown in fig. 7, the fixed armour clamp assembly 10 that insulate includes pillar 31,32 material of line seat of 31 rear end of pillar is zinc-plated
Steel, the front of pillar 31 are fixed with weathering steel block 33, and weathering steel block 33 on weather-proof steel material angle steel tower 1 for installing
When, it is against on weather-proof steel material angle steel tower 1 and facilitates fixed use.On pillar 31 between weathering steel block 33 and line seat 32
The material divided is insulating composite material, is reached by the insulating composite material between weathering steel block 33 and line seat 32 and is dielectrically separated from
Effect.Wire clamp 34 is threadably mounted on line seat 32 and drainage thread A11 is pressed on line seat 32 by wire clamp 34, and drainage thread is consolidated in formation
Dingan County's dress.The front end for being located at weathering steel block 33 on pillar 31 is helicitic texture, and the front end of pillar 31 is inserted on tower body 2 and carries out
Installation of the fixed armour clamp assembly 10 on tower body 2 of insulating is realized in screw thread installation.
Since the cross section of angle steel tower is lattice pattern, and drainage thread A11, drainage thread B12, drainage thread C13 and drainage thread
Under D14 draws from the top of lightning conducter cross-arm 3 and from inside, therefore, four drainage threads how to be effectively fixed as on tower body compared with
For difficult technical detail.According to the basic principle of skin effect, when drainage thread is along tower body disposed inboard, should be use up between drainage thread
Amount increases spacing, to increase lightning protection effect；Meanwhile it being based on galvanic effect, drainage thread should avoid as far as possible and weathering steel
Directly contact.
Based on this, drainage thread A11, drainage thread B12, drainage thread C13 and drainage thread D14 are passed through to the fixed fitting group of insulation
Part 10 is mounted on the frame 16 of tower body tabula 15, and drainage thread A11 and drainage thread B12 are mounted on the combination position of tower body tabula 15
The combination position of tower body tabula 15 is mounted in mirror symmetry with drainage thread C13 and drainage thread D14.It is fork with tower body tabula 15
For type tabula, as shown in figure 4, the insulation for installing drainage thread A11, drainage thread B12, drainage thread C13 or drainage thread D14 is fixed
Armour clamp assembly 10 is fixed on frame 16, so that between drainage thread A11 and drainage thread C13, drainage thread B12 and drainage thread D14
Distance is maximum, to meet the related request of electric current.Equally, by taking tower body tabula 15 is cross tabula as an example, as shown in figure 5,
The distance between the fixed armour clamp assembly 10 of opposite insulation maximum.Again by taking grid type cross-arm as an example, structure is increasingly complex, and more
Drainage thread is mounted on the frame of grid type cross-arm by the fixed armour clamp assembly that insulate, then can be guaranteed bigger between drainage thread
Spacing.
As shown in fig. 6, column foot grounding assembly 9 includes band iron 21, band iron 21 is mounted on weather-proof by the firm fitting 22 of column foot
On the column foot of steel material angle steel tower 1.The firm fitting 22 of column foot can be traditional fixation fitting, but in order to guarantee insulating properties, such as
Shown in Fig. 8, the firm fitting 22 of column foot may include pressing plate 25 and fixed plate 26, and pressing plate 25 and fixed plate 26 are L shape, pressing plate 25
Installation Chong Die with fixed plate 26, felt pad 27 is equipped between pressing plate 25 and fixed plate 26, is played absolutely by felt pad 27
Edge effect.Drainage thread A11 is connect by ground terminal 23 in one end of band iron 21, the other end of band iron 21 by ground lead 24 with
Grounding body 20 connects.
Here, the ground line of transmission line of electricity is provided with both direction, on the outside of tower body or on the inside of tower body, i.e., with the prior art
For, grounding body 20 is set on the outside of tower body or inside, only need in a traditional way using transition member avoid ground line with
Tower body, which directly contacts, leads to corrosion.Here, by taking grounding body 20 is set on the outside of tower body as an example, to avoid ground line and tower body
Directly contact causes to corrode, and using structure shown in Fig. 6, when grounding body is located on the outside of tower body, band iron 21 is located on the outside of tower body, on
Drainage thread (drainage thread carries out interior to outer conversion using traditional fitting) is terminated, lower termination ground lead 24 leads to grounding body
20.
In actual use, when lightning conducter A18 or lightning conducter B19 meets with lightning stroke, according to different lightning stroke positions and electricity
It makes leave with rage to drainage thread A11, drainage thread B12, drainage thread C13 or drainage thread D14, which will shock by electricity, to be drawn inside tower body 2 down toward grounding body
20 carry out lightning protection earthing, ensure that line security.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation and
Improvement is both fallen in the range of claimed invention.The present invention claims protection scope by appended claims and its
Equivalent defines.
Claims (6)
1. a kind of for drawing formula ground wire grounding structure in the weather-proof steel material angle steel tower of residential area and area with less lightning activities environment including resistance to
It waits steel material angle steel tower (1), weather-proof steel material angle steel tower (1) includes tower body (2), and tower body (2) is equipped with lightning conducter from top to bottom
Cross-arm (3), upper conducting wire cross-arm (4), middle conducting wire cross-arm (5) and lower wire cross-arm (6), lightning conducter cross-arm are equipped with two on (3)
Lightning conducter (7), it is characterised in that:
It further include drainage thread, the quantity of drainage thread is 4, and drainage thread A (11), drainage thread B (12) pass through parallel groove clamp respectively
(17) it is mounted on enter line side, the outgoing line side of (18) lightning conducter A, drainage thread C (13), drainage thread D (14) pass through parallel groove clamp respectively
(17) it is mounted on enter line side, the outgoing line side of (19) lightning conducter B, drainage thread A (11), drainage thread B (12), drainage thread C (13) and draws
Streamline D (14) draws in tower body (2) at the top of lightning conducter cross-arm (3) and is grounded group by column foot afterwards through tower body (2)
Part (9) is connected with grounding body (20) respectively, and drainage thread A (11) and drainage thread B (12) are same with lightning conducter A (18) in tower body (2)
The tower body of side arranges that drainage thread C (13) and drainage thread D (14) are along the interior tower body cloth with lightning conducter B (19) the same side of tower body (2)
It sets, drainage thread A (11), drainage thread B (12), drainage thread C (13) and drainage thread D (14) pass through insulate fixed armour clamp assembly (10)
It is mounted on tower body (2)；
Drainage thread A (11), drainage thread B (12), drainage thread C (13) and the drainage thread D (14) passes through the fixed fitting that insulate
Component (10) is mounted on the frame (16) of tower body tabula (15), and drainage thread A (11) and drainage thread B (12) are mounted on tower body tabula
(15) combination position and drainage thread C (13) and drainage thread D (14) is mounted on the combination position of tower body tabula (15) in mirror image pair
It answers.
It a kind of is kept away for drawing formula in the weather-proof steel material angle steel tower of residential area and area with less lightning activities environment 2. according to claim 1
Thunder line ground structure, it is characterised in that: the column foot grounding assembly (9) includes band iron (21), and band iron (21) passes through column foot heavily fortified point
Gu fitting (22) is mounted on the column foot of weather-proof steel material angle steel tower (1), drainage thread A (11) is connect by ground terminal (23) flat
The other end of one end of iron (21), band iron (21) is connected by ground lead (24) with grounding body (20).
It a kind of is kept away for drawing formula in the weather-proof steel material angle steel tower of residential area and area with less lightning activities environment 3. according to claim 1
Thunder line ground structure, it is characterised in that: the insulation fixed armour clamp assembly (10) includes pillar (31), pillar (31) rear end
Line seat (32) material is galvanized steel, and the front of pillar (31) is fixed with weathering steel block (33), is located on pillar (31) weather-proof
The material of part is insulating composite material between steel block (33) and line seat (32), and wire clamp (34) is threadably mounted on line seat (32)
And drainage thread A (11) is pressed on line seat (32) by wire clamp (34), the front end on pillar (31) positioned at weathering steel block (33) is spiral shell
Line structure, the front end of pillar (31) are inserted on tower body (2) and carry out screw thread installation.
It a kind of is kept away for drawing formula in the weather-proof steel material angle steel tower of residential area and area with less lightning activities environment 4. according to claim 1
Thunder line ground structure, it is characterised in that: insulate fixed armour clamp assembly (10) positioned at tower body longitudinal direction same position, adjacent two
Spacing is 2-3m.
It a kind of is kept away for drawing formula in the weather-proof steel material angle steel tower of residential area and area with less lightning activities environment 5. according to claim 1
Thunder line ground structure, it is characterised in that: the tower body tabula (15) is fork type tabula or cross tabula.
It a kind of is kept away for drawing formula in the weather-proof steel material angle steel tower of residential area and area with less lightning activities environment 6. according to claim 2
Thunder line ground structure, it is characterised in that: the firm fitting of the column foot (22) includes pressing plate (25) and fixed plate (26), pressing plate
(25) and fixed plate (26) is L shape, and pressing plate (25) installation Chong Die with fixed plate (26) is located at pressing plate (25) and fixed plate (26)
Between felt pad (27) are installed.
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