CN2833910Y - Soil resistivity improving pit for reducing earth resistance - Google Patents

Soil resistivity improving pit for reducing earth resistance Download PDF

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Publication number
CN2833910Y
CN2833910Y CN 200520097779 CN200520097779U CN2833910Y CN 2833910 Y CN2833910 Y CN 2833910Y CN 200520097779 CN200520097779 CN 200520097779 CN 200520097779 U CN200520097779 U CN 200520097779U CN 2833910 Y CN2833910 Y CN 2833910Y
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CN
China
Prior art keywords
well
earth
resistance
soil resistivity
soil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN 200520097779
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Chinese (zh)
Inventor
杜忠东
董晓辉
余莉娜
谭进
袁明仁
杨杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Power Science Research Institute Of National Network
Wuhan NARI Ltd
Original Assignee
武汉高压研究所
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Filing date
Publication date
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Priority to CN 200520097779 priority Critical patent/CN2833910Y/en
Application granted granted Critical
Publication of CN2833910Y publication Critical patent/CN2833910Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

A kind of soil resistivity that is used to reduce earth resistance improve well, the utility model relates to project of transmitting and converting electricity, lightning protection, earth work technical field.The purpose of this utility model is to provide a kind of well that improves of the soil resistivity that is used to reduce earth resistance, the soil resistivity of this reduction earth resistance improves well, comprise the well body, resistance layer is fallen, conduction circle copper rod cobblestone and infiltration hole are formed, the soil resistivity of described earth resistance improve well be arranged in earth mat around, well depth 〉=5m wherein, the shaft bottom diameter is greater than the well bore diameter, and filling percdation type soil resistance reducing agent, each improves well and is provided with consistent with well depth length two conduction copper rods and is connected with former earth mat by connecting lead, be equipped with cobblestone improving the well superficial layer, well body periphery is provided with infiltration Kong Bingyu well lid infiltration hole and communicates.The utility model is through evidence, and after this earth mat soil resistivity improved well connection earth mat, electric conductivity was good, has reduced whole ground network ground resistance.

Description

A kind of soil resistivity that is used to reduce earth resistance improve well
Technical field
The utility model relates to project of transmitting and converting electricity, lightning protection, earth work technical field, particularly a kind of soil resistivity that is used to reduce earth resistance improve well.
Background technology
As everyone knows, China requires regulation to the former earth mat design specification of transformer station, and satisfying the substation ground network resistance value must limit value≤and 0.5 ohm.But, the geology soil regime in the geographical position that transformer station is of living in is not quite similar, and the excursion of the resistivity under rainy district or shadow different situations also differs greatly, for example contain sand clay, the resistivity approximation of sand geology is at 300 Ω m, the resistivity approximation of granite geology is at 5000 Ω m, if during the present shadow of above-mentioned two kinds of example resistivity approximate tables, change in resistance can rise 2-4 doubly.Because at the construction field (site), the land area that is used to bury underground earth mat is limited, does not have outer possibility of drawing earth mat again, removes the traditional expansion of employing the ground network area, there is no better method.Therefore, be with the general resistivity of total soil at 200 to 600 Ω m, it is very difficult being reduced to rules regulation≤0.5 Ω m.
Summary of the invention
The purpose of this utility model is to provide a kind of well that improves of the soil resistivity that is used to reduce earth resistance, and the substation ground network land area is limited does not have outer contradiction of drawing earth mat again to solve, and finally reaches to overcome complex geological condition, the purpose of reduction soil resistivity.
Realize concrete technical scheme of the present utility model, the soil resistivity of this reduction earth resistance improves well, comprise the well body, resistance layer is fallen, conduction circle copper rod, cobblestone and infiltration hole are formed, the soil resistivity of described earth resistance improve well be arranged in earth mat around, well depth 〉=5m wherein, the shaft bottom diameter is greater than the well bore diameter, and filling percdation type soil resistance reducing agent, each improves well and is provided with consistent two conduction copper rods with well depth length and is connected with former earth mat by connecting lead, be equipped with cobblestone improving the well superficial layer, well body periphery is provided with infiltration Kong Bingyu well lid infiltration hole and communicates.
The utility model is through evidence, the soil resistivity of this earth resistance improves well, be not subjected to the restriction of substation ground network land area, can overcome complex geological condition, after connecting earth mat, electric conductivity is good, has reduced whole ground network ground resistance, can satisfy former earth mat design specification fully and require regulation, and the conductor corrosion resistance is good.
Description of drawings
Fig. 1 soil resistivity improves the well construction schematic diagram.
Fig. 2 electric resistance of soil improves well and former earth mat connection diagram.
1-improves well well body, 2-deep soil resistance reducing agent, 3-copper rod, the 4-hole of seeping water, 5-cobblestone, 6-well lid, 7-earth mat, 8-deep well grounding electrode, 9-conductive earthing module.
Embodiment
The utility model is when implementing, around earth mat, arrange that 4 are improved well projected depth 5m, shaft bottom diameter 1m, well bore diameter 0.6m, the shaft bottom adopts explosion system to split the agent of pressure injection SJ-3 percdation type resistance rate, two earth electrode copper rod Φ 16 in the well, its surface spraying SE-88 corrosion-resistant conductive coating, earth mat with improve the well earth electrode and be connected all to adopt the chamotte welding and add and use corrosion-resistant conductive coating.

Claims (1)

1, a kind of soil resistivity that is used to reduce earth resistance improve well, it comprises the well body, resistance layer is fallen, conduction circle copper rod, cobblestone and infiltration hole are formed, the soil resistivity that it is characterized in that described earth resistance improve well be arranged in earth mat around, well depth 〉=5m wherein, the shaft bottom diameter is greater than the well bore diameter, and filling percdation type soil resistance reducing agent, each improves well and is provided with consistent two conduction copper rods with well depth length and is connected with former earth mat by connecting lead, be equipped with cobblestone improving the well superficial layer, well body periphery is provided with infiltration Kong Bingyu well lid infiltration hole and communicates.
CN 200520097779 2005-08-24 2005-08-24 Soil resistivity improving pit for reducing earth resistance Expired - Lifetime CN2833910Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200520097779 CN2833910Y (en) 2005-08-24 2005-08-24 Soil resistivity improving pit for reducing earth resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200520097779 CN2833910Y (en) 2005-08-24 2005-08-24 Soil resistivity improving pit for reducing earth resistance

Publications (1)

Publication Number Publication Date
CN2833910Y true CN2833910Y (en) 2006-11-01

Family

ID=37198223

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200520097779 Expired - Lifetime CN2833910Y (en) 2005-08-24 2005-08-24 Soil resistivity improving pit for reducing earth resistance

Country Status (1)

Country Link
CN (1) CN2833910Y (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101771203A (en) * 2010-03-05 2010-07-07 陕西电力科学研究院 Corrosion-preventing and resistance-reducing grounding module
CN101714735B (en) * 2009-12-28 2011-11-09 中国瑞林工程技术有限公司 Construction method of bio-bacterium grounding resistance reducer
CN102280726A (en) * 2011-05-18 2011-12-14 湖南省电力公司科学研究院 Method for reducing grounding resistance of grounding network with non-uniform soil resistivity
CN102904141A (en) * 2012-10-30 2013-01-30 山东电力集团公司烟台供电公司 Resistance reducing device for ground grid
CN103259104A (en) * 2013-06-07 2013-08-21 国家电网公司 Well group grounding net
CN105153712A (en) * 2015-06-24 2015-12-16 中国科学院海洋研究所 Method for handling AC interference of underground pipelines
CN105514630A (en) * 2016-01-28 2016-04-20 国网山西省电力公司临汾供电公司 Absorption type grounding device low in impedance
CN105552594A (en) * 2016-01-30 2016-05-04 武汉大学 Resistance reduction device and method for earth network of substation through water injection seepage

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101714735B (en) * 2009-12-28 2011-11-09 中国瑞林工程技术有限公司 Construction method of bio-bacterium grounding resistance reducer
CN101771203A (en) * 2010-03-05 2010-07-07 陕西电力科学研究院 Corrosion-preventing and resistance-reducing grounding module
CN102280726A (en) * 2011-05-18 2011-12-14 湖南省电力公司科学研究院 Method for reducing grounding resistance of grounding network with non-uniform soil resistivity
CN102904141A (en) * 2012-10-30 2013-01-30 山东电力集团公司烟台供电公司 Resistance reducing device for ground grid
CN103259104A (en) * 2013-06-07 2013-08-21 国家电网公司 Well group grounding net
CN103259104B (en) * 2013-06-07 2015-10-28 国家电网公司 A kind of gang of wells ground network
CN105153712A (en) * 2015-06-24 2015-12-16 中国科学院海洋研究所 Method for handling AC interference of underground pipelines
CN105514630A (en) * 2016-01-28 2016-04-20 国网山西省电力公司临汾供电公司 Absorption type grounding device low in impedance
CN105552594A (en) * 2016-01-30 2016-05-04 武汉大学 Resistance reduction device and method for earth network of substation through water injection seepage

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: STATE NETWORK ELECTRIC POWER RESEARCH INSTITUTE

Free format text: FORMER OWNER: WUHAN HIGH VOLTAGE RESEARCH INSTITUTE

Effective date: 20100129

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20100129

Address after: Nanjing City, Jiangsu Province, Nan Shui Road No. 8, zip code: 210003

Co-patentee after: Wuhan Nari Limited Liability Company of State Grid Electric Power Research Institute

Patentee after: Power Science Research Institute of national network

Address before: Luoyu Road, Hubei province Wuhan city Hongshan District No. 143, zip code: 430074

Patentee before: Wuhan High Voltage Inst.

CX01 Expiry of patent term

Expiration termination date: 20150824

Granted publication date: 20061101

EXPY Termination of patent right or utility model