CN109904637A - Vertical ground structure and its construction method in a kind of power transmission and transformation line - Google Patents
Vertical ground structure and its construction method in a kind of power transmission and transformation line Download PDFInfo
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- CN109904637A CN109904637A CN201910131585.3A CN201910131585A CN109904637A CN 109904637 A CN109904637 A CN 109904637A CN 201910131585 A CN201910131585 A CN 201910131585A CN 109904637 A CN109904637 A CN 109904637A
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Abstract
The present invention relates to the vertical ground structures and its construction method in a kind of power transmission and transformation line, including vertical hole, steel pipe, ground line, wherein steel pipe is vertically arranged in vertical hole, the periphery of steel pipe is welded with multiple transverse metal items, ground line is connected by fixing screws in the periphery of steel pipe, and is bound by strapping and steel pipe, and the lower end of ground line is turned back to steel duct, the bottom side of the wall of steel pipe offers multiple holes, and steel pipe has been arranged inside and outside electroconductive cement；Convenient for construction, it can be realized the ground line of low-resistivity, by welding multiple metal strips on steel pipe periphery, it can guarantee the secured connection between metal strip and electroconductive cement, and facilitate the conduction between steel pipe and electroconductive cement, the contact surface that electrode and soil can be expanded using electroconductive cement is increased the flow range and flowing velocity of thunder-strike current, improves the safety coefficient of power transmission and transformation line.
Description
Technical field
A kind of vertical ground junction the present invention relates to ground structure and construction method, in particular in a kind of power transmission and transformation line
Structure and its construction method.
Background technique
In power transmission and transformation line and electrical equipment, lightning stroke causes insulator damage to influence power transmission and transformation line in order to prevent
Safe and stable operation needs to carry out grounding, and especially in the area of some high resistivity soil, ground connection can reduce lightning stroke and draw
The multiphase short circuit risen and line-outage contingency are no more than 100 Ω m, 100 m < ρ≤300 Ω of soil resistivity in soil resistivity
The area of Ω m should also add artificial earthing's device, earthing pole in addition to using the natural grounding of steel tower and steel reinforced concrete pole
The depth of burying is not preferably less than 0.6m；In the area of 300 Ω of Ω m < ρ≤2000 m of soil resistivity, horizontal laying can be used
Earthing or grounding means, the electrode depth of burying are not preferably less than 0.5m；In the area the Ω of soil resistivity ρ > 2000 m, it can be used 6~8 always
The long radiation earthing pole or continuous elongation earthing pole for being no more than 500m.
Conventional grounding be dig out on the ground depth within one meter length in several meters to more than ten meters long ditches,
It is grounded in ditch and backfills electroconductive cement, in addition there are also tunnel type earthing mode, but these earthing modes, it is required to dig out on ground
One long ditch is laid with ground line in ditch, guarantees the safety of power transmission and transformation line.
The above method is a kind of construction method carried out under spacious place, however, in actual work progress often
The narrow situation of construction space can be often encountered, when carrying out the excavation of ground connection duct especially in city, can usually encounter underground
There is situations such as cable duct, sewer, once excavating long ditch, damage can be brought to cause to surrounding buildings, underground installation etc. extremely tight
The consequence of weight.
Summary of the invention
It will appear influence for when urban architecture and underground installation dense region carry out power transmission and transformation line ground line construction
Or the case where damage underground installation, above-ground structures, the present invention provide a kind of vertical ground structure in power transmission and transformation line and its
Construction method, the purpose is to will not affect to surrounding buildings when embedded underground is grounded.
The technical scheme is that the vertical ground structure in a kind of power transmission and transformation line, including vertical hole, steel pipe, connect
Ground wire, wherein steel pipe is vertically arranged in vertical hole, and the periphery of steel pipe is welded with multiple transverse metal items, and ground line passes through fixation
Screw is connected in the periphery of steel pipe, and is bound by strapping and steel pipe, and the lower end of ground line is turned back to steel duct, steel
The bottom side of the wall of pipe offers multiple holes, and steel pipe has been arranged inside and outside electroconductive cement.
Preferably, the diameter of the vertical hole is 1.5 ~ 5 times of diameter of steel tube；
Preferably, the diameter of steel pipe is in 100mm ~ 300mm；
Preferably, the depth in steel duct is grounded at least in 20mm；
Preferably, steel pipe height is in 1m ~ 3m；
Preferably, the ground line is bare wire, and the cross-sectional area of ground line is 3 ~ 9mm2。
Further, described the present invention also provides a kind of construction method of the vertical ground structure in power transmission and transformation line
Construction method follows the steps below:
1), vertical hole is opened up on ground using drilling machine；
2) it, is fixed with the steel pipe of ground line on the outside of insertion in vertical hole, and is made on the outside of steel pipe one at a distance from vertical hole periphery
It causes；
3) the steel pipe upper end of mud pump discharge and insertion underground is tightly connected by interconnecting piece, and keeps the entrance of slush pump logical
The outlet for crossing electroconductive cement delivery pipe and blender connects, and valve is provided between slush pump and steel pipe, can be according to electroconductive cement
The pressure of delivery pipe adjusts uninterrupted, is provided with stirring rod in blender, stirring rod is driven by motor；
4), electroconductive cement is poured into steel pipe and compressed using slush pump, makes electroconductive cement from the hole that steel pipe bottom side of the wall opens up
Middle outflow is poured into the space in steel pipe outside vertical hole, until electroconductive cement rises to vertical hole orifice position, makes electroconductive cement
It is consistent with ground height；
5), continue as needed it is above-mentioned 1) ~ 5) the step of, open up multiple vertical ground structures；
6), the ground line of multiple vertical ground structures is cascaded and constitutes grounding electrode.
Preferably, the target resistance of the grounding electrode is 10 Ω hereinafter, selecting inbuilt ground line quantity as needed,
Spacing is between 1-5m between the steel pipe.
Vertical ground structure of the invention and construction method do not allow large area to open up trench underground or surrounding enviroment
In the case where, convenient for construction, it can be realized the ground line of low-resistivity, it with this method will not be because of ring around construction infection
Phenomena such as traffic is unsmooth, and water power is obstructed is brought in border, and appliance caused by can preventing because of thunder and lightning damages, by using low resistance
Electroconductive cement, soil conservation around grounding electrode can be made wet, prevent soil earth wire from causing to corrode, cause to be grounded
The resistance of line improves；By welding multiple metal strips on steel pipe periphery, can guarantee secured between metal strip and electroconductive cement
Connection, and facilitate the conduction between steel pipe and electroconductive cement, contact of the electrode with soil can be expanded using electroconductive cement
Face increases the flow range and flowing velocity of thunder-strike current, improves the safety coefficient of power transmission and transformation line.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
It is as shown in the figure: 1, blender, 1a, motor, 2, electroconductive cement delivery pipe, 3, slush pump, 4, valve, 5, interconnecting piece, 6, hang down
Straight hole, 7, steel pipe, 7a, hole, 7b, metal strip, 8, ground line, 8a, strapping, 8b, fixing screws, 9, ground, 10, conductivity water
Mud.
Specific embodiment
In order to better understand with realization technical solution of the present invention, some embodiments of the present invention are provided herein, these
Embodiment is technical solution in order to better explain the present invention, is not constituted to any form limitation of the invention.
The specific technical solution of the present invention is described in further detail referring to the drawings.
As shown in Figure 1, the technical scheme is that a kind of vertical ground structure in power transmission and transformation line, including it is vertical
Hole 6, steel pipe 7, ground line 8, wherein steel pipe 7 is vertically arranged in vertical hole 6, and the periphery of steel pipe 7 is welded with multiple transverse metals
7b, ground line 8 are connected by fixing screws 8b in the periphery of steel pipe 7, and are bound by strapping 8a and steel pipe 7, are connect
The lower end of ground wire 8 is turned back to inside steel pipe 7, and the bottom side of the wall of steel pipe 7 offers multiple hole 7a, and steel pipe 7 has been arranged inside and outside conduction
Cement 10.
Preferably, the diameter of the vertical hole 6 is 1.5 ~ 5 times of 7 diameter of steel pipe；
Preferably, the diameter of steel pipe 7 is in 100mm ~ 300mm；
Preferably, depth of the ground line 8 inside steel pipe 7 is at least in 20mm；
Preferably, 7 height of steel pipe is in 1m ~ 3m；
Preferably, the ground line 8 is bare wire, and the cross-sectional area for being grounded 8 is 3 ~ 9mm2。
Further, described the present invention also provides a kind of construction method of the vertical ground structure in power transmission and transformation line
Construction method follows the steps below:
1), vertical hole 6 is opened up on ground using drilling machine；
2) steel pipe 7 of ground line 8, is fixed on the outside of insertion in vertical hole 6, and make the outside of steel pipe 7 and 6 periphery of vertical hole away from
From consistent；
3), slush pump 3 is exported and is tightly connected with 7 upper end of steel pipe of insertion underground by interconnecting piece 5, and makes entering for slush pump 3
Mouth is connect by electroconductive cement delivery pipe 2 with the outlet of blender 1, and valve 4 is provided between slush pump 3 and steel pipe 7, can basis
The pressure of electroconductive cement delivery pipe 2 adjusts uninterrupted, is provided with stirring rod in blender 1, stirring rod is driven by motor 1a；
4), electroconductive cement is poured into steel pipe 7 and compressed using slush pump 3, opens up electroconductive cement from steel pipe bottom side of the wall
It flows out, is poured into the space in steel pipe outside vertical hole in hole, until electroconductive cement 10 rises to 6 orifice position of vertical hole, make to lead
Electric cement 10 is consistent with 9 height of ground；
5), continue as needed it is above-mentioned 1) ~ 5) the step of, open up multiple vertical ground structures；
6), the ground line 8 of multiple vertical ground structures is cascaded and constitutes grounding electrode.
Preferably, the target resistance of the grounding electrode is 10 Ω hereinafter, selecting inbuilt ground line quantity as needed,
Spacing is between 1-5m between the steel pipe.
Vertical ground structure of the invention and construction method do not allow large area to open up trench underground or surrounding enviroment
In the case where, convenient for construction, it can be realized the ground line of low-resistivity, it with this method will not be because of ring around construction infection
Phenomena such as traffic is unsmooth, and water power is obstructed is brought in border, and appliance caused by can preventing because of thunder and lightning damages, by using low resistance
Electroconductive cement, soil conservation around grounding electrode can be made wet, prevent soil earth wire from causing to corrode, cause to be grounded
The resistance of line improves；By welding multiple metal strips on steel pipe periphery, can guarantee secured between metal strip and electroconductive cement
Connection, and facilitate the conduction between steel pipe and electroconductive cement, contact of the electrode with soil can be expanded using electroconductive cement
Face increases the flow range and flowing velocity of thunder-strike current, improves the safety coefficient of power transmission and transformation line.
After describing various specific embodiments of the invention in detail above, those skilled in the art Ying Keqing
Understand to Chu, according to the various common knowledges of this field, thinking according to the present invention can carry out various equivalent variationss, equivalent replacement
Or simple modification, these should belong to the range of technical solution of the present invention.
Claims (8)
1. the vertical ground structure in a kind of power transmission and transformation line, including vertical hole, steel pipe, ground line, it is characterised in that: steel pipe is perpendicular
Straight to be arranged in vertical hole, the periphery of steel pipe is welded with multiple transverse metal items, and ground line is connected by fixing screws
The periphery of steel pipe, and being bound by strapping and steel pipe, the lower end of ground line are turned back to steel duct, and the bottom side of the wall of steel pipe is opened
Equipped with multiple holes, steel pipe has been arranged inside and outside electroconductive cement.
2. the vertical ground structure in a kind of power transmission and transformation line according to claim 1, it is characterised in that: the vertical hole
Diameter be 1.5 ~ 5 times of diameter of steel tube.
3. the vertical ground structure in a kind of power transmission and transformation line according to claim 1, it is characterised in that: the diameter of steel pipe
In 100mm ~ 300mm.
4. the vertical ground structure in a kind of power transmission and transformation line according to claim 1, it is characterised in that: ground line is in steel
Depth inside pipe is at least in 20mm.
5. the vertical ground structure in a kind of power transmission and transformation line according to claim 1, it is characterised in that: steel pipe height exists
1m~3m。
6. the vertical ground structure in a kind of power transmission and transformation line according to claim 1, it is characterised in that: the ground line
For bare wire, the cross-sectional area of ground line is 3 ~ 9mm2。
7. the construction method of the vertical ground structure in power transmission and transformation line described in a kind of claim 1-6, the construction method
It follows the steps below:
1), vertical hole is opened up on ground using drilling machine；
2) it, is fixed with the steel pipe of ground line on the outside of insertion in vertical hole, and is made on the outside of steel pipe one at a distance from vertical hole periphery
It causes；
3) the steel pipe upper end of mud pump discharge and insertion underground is tightly connected by interconnecting piece, and keeps the entrance of slush pump logical
The outlet for crossing electroconductive cement delivery pipe and blender connects, and valve is provided between slush pump and steel pipe, can be according to electroconductive cement
The pressure of delivery pipe adjusts uninterrupted, is provided with stirring rod in blender, stirring rod is driven by motor；
4), electroconductive cement is poured into steel pipe and compressed using slush pump, makes electroconductive cement from the hole that steel pipe bottom side of the wall opens up
Middle outflow is poured into the space in steel pipe outside vertical hole, until electroconductive cement rises to vertical hole orifice position, makes electroconductive cement
It is consistent with ground height；
5), continue as needed it is above-mentioned 1) ~ 5) the step of, open up multiple vertical ground structures；
6), the ground line of multiple vertical ground structures is cascaded and constitutes grounding electrode.
8. the construction method of the vertical ground structure in power transmission and transformation line according to claim 7, it is characterised in that: described
The target resistance of grounding electrode is 10 Ω hereinafter, selecting inbuilt ground line quantity as needed, spacing is in 1- between the steel pipe
Between 5m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910131585.3A CN109904637A (en) | 2019-02-22 | 2019-02-22 | Vertical ground structure and its construction method in a kind of power transmission and transformation line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910131585.3A CN109904637A (en) | 2019-02-22 | 2019-02-22 | Vertical ground structure and its construction method in a kind of power transmission and transformation line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109904637A true CN109904637A (en) | 2019-06-18 |
Family
ID=66945248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910131585.3A Pending CN109904637A (en) | 2019-02-22 | 2019-02-22 | Vertical ground structure and its construction method in a kind of power transmission and transformation line |
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Citations (14)
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|---|---|---|---|---|
| JPH0727800A (en) * | 1993-07-07 | 1995-01-31 | Tohoku Electric Power Co Inc | Connection device for measurement of grounding resistance |
| CN101237135A (en) * | 2007-01-30 | 2008-08-06 | 唐翊程 | Air ground line downward link and method for ground line assembly |
| KR100865136B1 (en) * | 2008-03-28 | 2008-10-24 | 제일엔지니어링 (주) | Soil insensitive grounding structure and it's constructing method |
| KR20090129109A (en) * | 2008-06-12 | 2009-12-16 | 성균관대학교산학협력단 | Earth anchor |
| CN101740886A (en) * | 2009-12-31 | 2010-06-16 | 刘义 | Anti-corrosion grounding device and construction method thereof |
| CN101915005A (en) * | 2010-07-21 | 2010-12-15 | 攀枝花电业局 | Novel electric pole |
| JP4979829B1 (en) * | 2011-10-25 | 2012-07-18 | 強化土株式会社 | Ground injection method and ground injection device |
| CN204760552U (en) * | 2015-06-18 | 2015-11-11 | 沈阳电力勘测设计院 | Linear ground structure of steel pipe pole |
| CN105428834A (en) * | 2014-08-21 | 2016-03-23 | 国网河南省电力公司漯河供电公司 | Antitheft combined copper clad steel grounding electrode and mounting method thereof |
| CN106495607A (en) * | 2016-10-31 | 2017-03-15 | 中国葛洲坝集团电力有限责任公司 | A kind of conducting concrete and preparation method thereof and application |
| CN206134961U (en) * | 2016-10-31 | 2017-04-26 | 西安卓力科技发展有限公司 | Earthing device for slip casing by pressure |
| CN206977002U (en) * | 2017-06-22 | 2018-02-06 | 北京国电科源电气有限公司 | Anti- electromagnetic interference ground extractor |
| CN109066112A (en) * | 2018-07-10 | 2018-12-21 | 中国葛洲坝集团电力有限责任公司 | Reduce the earthing or grounding means and method of ground resistance and anti-artificial destruction high voltage iron tower |
| CN209313032U (en) * | 2019-02-22 | 2019-08-27 | 东莞职业技术学院 | A kind of vertical ground structure in power transmission and transformation line |
-
2019
- 2019-02-22 CN CN201910131585.3A patent/CN109904637A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0727800A (en) * | 1993-07-07 | 1995-01-31 | Tohoku Electric Power Co Inc | Connection device for measurement of grounding resistance |
| CN101237135A (en) * | 2007-01-30 | 2008-08-06 | 唐翊程 | Air ground line downward link and method for ground line assembly |
| KR100865136B1 (en) * | 2008-03-28 | 2008-10-24 | 제일엔지니어링 (주) | Soil insensitive grounding structure and it's constructing method |
| KR20090129109A (en) * | 2008-06-12 | 2009-12-16 | 성균관대학교산학협력단 | Earth anchor |
| CN101740886A (en) * | 2009-12-31 | 2010-06-16 | 刘义 | Anti-corrosion grounding device and construction method thereof |
| CN101915005A (en) * | 2010-07-21 | 2010-12-15 | 攀枝花电业局 | Novel electric pole |
| JP4979829B1 (en) * | 2011-10-25 | 2012-07-18 | 強化土株式会社 | Ground injection method and ground injection device |
| CN105428834A (en) * | 2014-08-21 | 2016-03-23 | 国网河南省电力公司漯河供电公司 | Antitheft combined copper clad steel grounding electrode and mounting method thereof |
| CN204760552U (en) * | 2015-06-18 | 2015-11-11 | 沈阳电力勘测设计院 | Linear ground structure of steel pipe pole |
| CN106495607A (en) * | 2016-10-31 | 2017-03-15 | 中国葛洲坝集团电力有限责任公司 | A kind of conducting concrete and preparation method thereof and application |
| CN206134961U (en) * | 2016-10-31 | 2017-04-26 | 西安卓力科技发展有限公司 | Earthing device for slip casing by pressure |
| CN206977002U (en) * | 2017-06-22 | 2018-02-06 | 北京国电科源电气有限公司 | Anti- electromagnetic interference ground extractor |
| CN109066112A (en) * | 2018-07-10 | 2018-12-21 | 中国葛洲坝集团电力有限责任公司 | Reduce the earthing or grounding means and method of ground resistance and anti-artificial destruction high voltage iron tower |
| CN209313032U (en) * | 2019-02-22 | 2019-08-27 | 东莞职业技术学院 | A kind of vertical ground structure in power transmission and transformation line |
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