CN201383556Y - Deep well grounding resistance-reducing device - Google Patents

Deep well grounding resistance-reducing device Download PDF

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Publication number
CN201383556Y
CN201383556Y CN200920140017U CN200920140017U CN201383556Y CN 201383556 Y CN201383556 Y CN 201383556Y CN 200920140017 U CN200920140017 U CN 200920140017U CN 200920140017 U CN200920140017 U CN 200920140017U CN 201383556 Y CN201383556 Y CN 201383556Y
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CN
China
Prior art keywords
deep
well
grounding
trenches
soil
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Expired - Fee Related
Application number
CN200920140017U
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Chinese (zh)
Inventor
魏晌
胡平
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XINJIANG ELECTRIC POWER SCIENTIFIC RESEARCH INSTITUTE
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XINJIANG ELECTRIC POWER SCIENTIFIC RESEARCH INSTITUTE
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Priority to CN200920140017U priority Critical patent/CN201383556Y/en
Application granted granted Critical
Publication of CN201383556Y publication Critical patent/CN201383556Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a grounding scheme for a power transmission and supply system for a large electric unit, in particular to a deep well grounding resistance-reducing device which comprises anticorrosive ion grounding bodies. Deep wells are evenly distributed on the ground with high-resistivity rocks or soil along a quadrangular ground net frame wire and are mutually connected through criss-cross reticular trenches, trenches emitting outwards are respectively formed at the deep wells positioned in the four corners of the ground net frame wire, the deep wells are evenly distributed in the trenches emitting outwards, the anticorrosive ion grounding bodies are respectively installed in each deep well, flat irons evenly distributed and installed in the trenches form a flat iron net with radial lines in the four corners, each anticorrosive ion grounding body is connected with the flat irons in the trenches positioned above the deep wells respectively through wires, the deep wells are filled with high-energy backfill materials, and the trenches are filled with back filling soil. The utility model not only can realize good grounding resistance-reducing performance of an electric network used for the integral rock and high soil-resistivity region, but also has the advantages of high anticorrosion property, long service life, small construction amount and no damage to the environment.

Description

The resistance device falls in deep-well grounding
Technical field
The utility model relates to large-scale with electric unit and grounding scheme defeated, electric power system, and the electrical network ground connection that is particularly useful for whole rock and high soil resistivity is fallen ground connection that the resistance scheme adopts and fallen resistance device, particularly deep-well grounding and fall the resistance device.
Background technology
At present the general scheme that effectively reduces soil resistivity in whole rock and high soil resistivity is that horizontal grounding net adds hang down steel pipe or angle splice earth polar, and in conjunction with the technical scheme of large tracts of land soil removal and replacement.Because the often low again soil resistivity loess in whole rock area or high soil region resistivity area is the expense height if transport loess one at a distance, the 2nd, low soil resistivity loess can be accelerated the corrosion to the horizontal earth mat of band iron formation.Therefore, this technical scheme has the shortcoming of poor, the broken circulating application building site district of resistance to corrosion environment, poor stability, and this scheme earth resistance that generally all can not steady in a long-term meet design requirement.
The utility model content
The purpose of this utility model is to provide a kind of deep-well grounding to fall the resistance device, and the electrical network ground connection resistance-reducing performance that not only can realize being used for whole rock and high soil resistivity is good, and corrosion resistance is strong, long service life, and also construction volume is little, broken ring environment.
The purpose of this utility model is achieved in that the resistance device falls in a kind of deep-well grounding, comprise anticorrosion ion grounding body, edge, ground at rock with high resistivity or soil is the uniform deep-well that is being provided with on the tetragonal ground screen frame line, and deep-well is interconnected by crisscross netted trench, at the deep-well place that is positioned on four angles of earth mat frame line the outwards trench of radiation is being set respectively, the uniform respectively deep-well that is being provided with in the trench of outwards radiation, anticorrosion ion grounding body is installed respectively in each deep-well, the band iron of uniform installation constitutes the band iron net that four angles have radioactive ray in trench, each anticorrosion ion grounding body is connecting the band iron that is positioned at its deep-well top trench by lead respectively, in deep-well, fill the high energy backfill, in trench, filling backfill soil.
When implementing the technical solution of the utility model, by reconnoitring generalization check with soil, and calculate the quantity and the degree of depth of definite good deep-well in the zone that earth mat is built through theory to building the regional geology structure.Owing to anticorrosion ion grounding body is installed in the deep-well respectively as vertical earth polar, in deep-well, filling the high energy backfill as anticorrisive agent ion slow-release material, the band iron net of installing in the netted trench connects as the earth mat level, and anticorrosion ion grounding body is connecting band iron by lead.The utility model ground connection resistance-reducing performance is good.According to a large amount of tests, and, all can reach the design specification requirement in the practice of construction situation of Xinjiang Turfan Prefecture, Ili Prefecture.Wherein, mining area, Turfan Prefecture South Mountain soil resistivity is greater than 20000m Ω, design specification be the ground network ground resistance requirement less than 5 Ω, implement the technical solution of the utility model after, ground network ground resistance is reduced to 1.8 Ω after tested.The soil resistivity in Yi Li clear water river area is 2000m Ω, design specification be the ground network ground resistance requirement less than 1 Ω, implement the technical solution of the utility model after, ground network ground resistance is reduced to 0.96 Ω after tested.The electrical network ground connection resistance-reducing performance that the utility model not only can realize being used for whole rock and high soil resistivity is good, and corrosion resistance is strong, long service life, and also construction volume is little, broken ring environment.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the utility model deep-well schematic layout pattern;
Fig. 2 is the A-A sectional structure schematic diagram of Fig. 1.
Embodiment
The resistance device falls in a kind of deep-well grounding, as shown in Figure 1 and Figure 2, comprise anticorrosion ion grounding body 1, edge, ground at rock with high resistivity or soil is the uniform deep-well 2 that is being provided with on the tetragonal ground screen frame line, and by crisscross netted trench 5 deep-well 2 is interconnected, and at deep-well 2 places that are positioned on four angles of earth mat frame line the outwards trench 5 of radiation is being set respectively, the uniform respectively deep-well 2 that is being provided with in the trench 5 of outwards radiation, the resistivity of rock or soil 〉=1000m Ω.Anticorrosion ion grounding body 1 is installed respectively in each deep-well 2, and the band iron 4 of uniform installation in trench 5 constitutes the band iron net that four angles have radioactive ray, and band iron 4 is the hot galvanizing band iron, and the connection between the band iron 4 adopts electric welding to connect, and applies corrosion resistant coating at the solder joint place.Each anticorrosion ion grounding body 1 is connecting the band iron 4 that is positioned at its deep-well 2 top trenches 5 by lead 3 respectively, is filling high energy backfill 6 in deep-well 1, and high energy backfill 6 is made of volcanic ash and high energy active ion sustained release agent.In trench 5, filling backfill soil.Build defensive hedge 7 at periphery of the present utility model.

Claims (4)

1, the resistance device falls in a kind of deep-well grounding, comprise anticorrosion ion grounding body (1), it is characterized in that: the edge, ground at rock with high resistivity or soil is the uniform deep-well (2) that is being provided with on the tetragonal ground screen frame line, and deep-well (2) is interconnected by crisscross netted trench (5), the deep-well (2) that is positioned on four angles of screen frame line, ground locates be provided with respectively the outwards trench (5) of radiation, the uniform respectively deep-well (2) that is being provided with in the trench (5) of outwards radiation, anticorrosion ion grounding body (1) is installed respectively in each deep-well (2), the band iron (4) of uniform installation in trench (5) constitutes the band iron net that four angles have radioactive ray, each anticorrosion ion grounding body (1) is connecting the band iron (4) that is positioned at its deep-well (2) top trench (5) by lead (3) respectively, in deep-well (1), fill high energy backfill (6), in trench (5), filling backfill soil.
2, the resistance device falls in deep-well grounding according to claim 1, it is characterized in that: the resistivity of rock or soil 〉=1000m Ω.
3, the resistance device falls in deep-well grounding according to claim 1, it is characterized in that: high energy backfill (6) is made of volcanic ash and high energy active ion sustained release agent.
4, the resistance device falls in deep-well grounding according to claim 1, it is characterized in that: band iron (4) is the hot galvanizing band iron.
CN200920140017U 2009-04-03 2009-04-03 Deep well grounding resistance-reducing device Expired - Fee Related CN201383556Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200920140017U CN201383556Y (en) 2009-04-03 2009-04-03 Deep well grounding resistance-reducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200920140017U CN201383556Y (en) 2009-04-03 2009-04-03 Deep well grounding resistance-reducing device

Publications (1)

Publication Number Publication Date
CN201383556Y true CN201383556Y (en) 2010-01-13

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CN200920140017U Expired - Fee Related CN201383556Y (en) 2009-04-03 2009-04-03 Deep well grounding resistance-reducing device

Country Status (1)

Country Link
CN (1) CN201383556Y (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101877437A (en) * 2010-06-24 2010-11-03 天津市普瑞电力科学研究有限责任公司 Anti-saline alkali corrosion resistance-reduction combined grounding body
CN103928771A (en) * 2013-01-10 2014-07-16 福建省电力有限公司 Grounding method of reducing local impact grounding resistance of power plant and substation
CN104466440A (en) * 2014-12-11 2015-03-25 四川为民科技有限公司 Pulse power grid system lightning protection grounding device for animal protection and installation method thereof
CN109066250A (en) * 2018-08-14 2018-12-21 中国铁建电气化局集团北方工程有限公司 Mountain area high roadbed, high soil resistivity high-speed railway traction substation are grounded engineering method
CN111682327A (en) * 2020-06-09 2020-09-18 深圳供电局有限公司 Grounding device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101877437A (en) * 2010-06-24 2010-11-03 天津市普瑞电力科学研究有限责任公司 Anti-saline alkali corrosion resistance-reduction combined grounding body
CN103928771A (en) * 2013-01-10 2014-07-16 福建省电力有限公司 Grounding method of reducing local impact grounding resistance of power plant and substation
CN104466440A (en) * 2014-12-11 2015-03-25 四川为民科技有限公司 Pulse power grid system lightning protection grounding device for animal protection and installation method thereof
CN109066250A (en) * 2018-08-14 2018-12-21 中国铁建电气化局集团北方工程有限公司 Mountain area high roadbed, high soil resistivity high-speed railway traction substation are grounded engineering method
CN109066250B (en) * 2018-08-14 2019-11-19 中国铁建电气化局集团北方工程有限公司 Mountain area high roadbed, high soil resistivity high-speed railway traction substation are grounded engineering method
CN111682327A (en) * 2020-06-09 2020-09-18 深圳供电局有限公司 Grounding device

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GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100113

Termination date: 20110403