CN201478470U - Structure of lightning-protection grounding network in karst area - Google Patents

Structure of lightning-protection grounding network in karst area Download PDF

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Publication number
CN201478470U
CN201478470U CN2009203060827U CN200920306082U CN201478470U CN 201478470 U CN201478470 U CN 201478470U CN 2009203060827 U CN2009203060827 U CN 2009203060827U CN 200920306082 U CN200920306082 U CN 200920306082U CN 201478470 U CN201478470 U CN 201478470U
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CN
China
Prior art keywords
metal electrode
karst
resistance
deep
well
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
CN2009203060827U
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Chinese (zh)
Inventor
罗飞
谢炎林
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Guizhou NanYuan Power Technology Development Co Ltd
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Guizhou NanYuan Power Technology Development Co Ltd
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Priority to CN2009203060827U priority Critical patent/CN201478470U/en
Application granted granted Critical
Publication of CN201478470U publication Critical patent/CN201478470U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses a structure of a lightning-protection grounding network in karst area. The structure comprises a lightning-protection area (1) in the karst area; the lightning-protection area (1) of the karst area is provided with a deep well (2) that is internally provided with a hollow tubular metal electrode (3); and the deep well (2) and the metal electrode (3) are internally provided with resistance-reducing materials (4). In the utility model, during the field construction, the geological section layer in the karst area is filled with the resistance-reducing material, the conductive performance of the geology around the metal electrode is improved, the requirement of the resistance value of the grounding network of a transformer substation is achieved, and the structure has the advantages of simple structure and operation, low cost, and the like.

Description

A kind of structure of lightning protection grounding network in karst area
Technical field
The utility model relates to a kind of structure of lightning protection grounding network, particularly a kind of structure of lightning protection grounding network in karst area.
Background technology
China requires regulation to the former earth mat design specification of transformer station, satisfies the necessary limit value of substation ground network resistance value smaller or equal to 0.5 ohm.But the geology soil regime in the geographical position that transformer station is of living in is not simultaneously, the excursion of resistivity also has bigger difference, for example in rock area or karst, the former causes resistivity low excessively because of silicone content is too high, latter person can influence resistivity because of the rock tomography in the geology.Simultaneously owing to how lightning protection grounding network constructs at the scene, under the indefinite environment of this resistance value, now methods that enlarge the ground network area that adopt more, this method is subjected to the restriction of soil size when construction, and the difficult estimation of resistance change former because of geology thereby that cause makes the earth mat resistance value be reduced to relatively difficulty of rules prescribed limit.Another kind is the method that changes geology resistance, as a kind of based on copper pipe, the inner electrolyte that adds, discharge electrolyte by porus excretorius, the active earthing module of regulating surrounding soil resistivity, it has not only considered anticorrosion but also good resistance reducing effect is arranged, and be a kind of earthing material preferably really, but this method first exists price higher; Second because karst rock section is more, and the electrolyte in the copper pipe is limited can't to link to each other when running into the karst geological section, forms tomography and does not reach expected effect, can't adapt to and satisfy the karst.
The utility model content
The technical problems to be solved in the utility model is, a kind of suitable lightning protection grounding network in karst area construction is provided, and resistance changes effective, and structure of the lightning protection grounding network in karst area that the construction price is lower and preparation method thereof can overcome the deficiencies in the prior art.
The technical solution of the utility model; It comprises lightning protection zone, karst, offers deep-well on lightning protection zone, karst, is provided with the metal electrode of hollow tubular in deep-well, is provided with resistance-lowering material in deep-well and metal electrode.
Have the rock sectional layer on the deep-well, be provided with permeability hole on metal electrode, the position of permeability hole is relative with the position of rock sectional layer, in the rock sectional layer resistance-lowering material is arranged.
Bottom at metal electrode is provided with permeability hole.
The aperture of deep-well is φ 60~φ 110mm.
The caliber of metal electrode is φ 35~φ 100mm.
Described resistance-lowering material is the physics resistance reducing agent, as improveing bentonite etc.
Compared with the prior art, the utility model is offered deep-well by the zone that need bury thunder resisting equipment in the karst underground, and the metal electrode that will offer permeability hole is put within the deep-well, then resistance-lowering material is injected from metal electrode, utilize the permeability hole of metal electrode to enter and fill up deep-well, just can utilize resistance-lowering material that the geological section layer of karst is filled up when the utility model is constructed at the scene like this, improve the metal electrode electric conductivity of geology on every side, reach the requirement of substation ground network resistance value; When offering deep-well, earlier the geological stratification of deep-well is sampled, and offer permeability hole on the metal electrode according to the geological stratification sampled result, make the permeability hole position on the metal electrode of putting into deep-well corresponding with the position that geological stratification has the rock section, the resistance-lowering material that comes out from permeability hole just can preferentially fill up geological fault like this, can further improve the metal electrode electric conductivity of geology on every side.Superiority such as the utility model also has structure, simple to operate simultaneously, and cost is low.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Embodiment: as shown in Figure 1, offer deep-well 2 at 1 place, karst lightning protection zone with drilling equipment earlier, the aperture of deep-well 2 is φ 60~φ 110mm, geology soil layer to deep-well 2 when drilling well is sampled, seek the rock tomography, the back so makes the metal electrode 3 of hollow tubular according to the degree of depth of deep-well 2, metal electrode 3 is made by copper pipe, its caliber is φ 35~φ 100mm, and offer permeability hole 5 on the metal electrode 3 according to the geological stratification sampled result, make permeability hole 5 positions on the metal electrode 3 of putting into deep-well 2 corresponding with the position that geological stratification has rock sectional layer 6, after metal electrode 3 put into deep-well 2, utilize grouting equipment to be connected with metal electrode 3, make resistance-lowering material 4 be pressed into and fill up deep-well 2 and rock sectional layer 6 along the permeability hole on the metal electrode 35, used resistance-lowering material 4 is the physics resistance reducing agent, as improveing bentonite etc.

Claims (6)

1. the structure of a lightning protection grounding network in karst area, it comprises lightning protection zone, karst (1), it is characterized in that: on lightning protection zone, karst (1), offer deep-well (2), in deep-well (2), be provided with the metal electrode (3) of hollow tubular, in deep-well (2) and metal electrode (3), be provided with resistance-lowering material (4).
2. according to the structure of claim 1 described lightning protection grounding network in karst area, it is characterized in that: have rock sectional layer (6) on the deep-well (2), on metal electrode (3), be provided with permeability hole (5), the position of permeability hole (5) is relative with the position of rock sectional layer (6), and resistance-lowering material (4) is arranged in rock sectional layer (6).
3. according to the structure of claim 1 or 2 described lightning protection grounding network in karst area, it is characterized in that: be provided with permeability hole (5) in the bottom of metal electrode (3).
4. according to the structure of claim 1 described lightning protection grounding network in karst area, it is characterized in that: the aperture of deep-well (2) is φ 60~φ 110mm.
5. according to the structure of claim 1 described lightning protection grounding network in karst area, it is characterized in that: the caliber of metal electrode (3) is φ 35~φ 100mm.
6. according to the structure of claim 1 described lightning protection grounding network in karst area, it is characterized in that: described resistance-lowering material is the physics resistance reducing agent.
CN2009203060827U 2009-07-13 2009-07-13 Structure of lightning-protection grounding network in karst area Expired - Lifetime CN201478470U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009203060827U CN201478470U (en) 2009-07-13 2009-07-13 Structure of lightning-protection grounding network in karst area

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009203060827U CN201478470U (en) 2009-07-13 2009-07-13 Structure of lightning-protection grounding network in karst area

Publications (1)

Publication Number Publication Date
CN201478470U true CN201478470U (en) 2010-05-19

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Family Applications (1)

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CN2009203060827U Expired - Lifetime CN201478470U (en) 2009-07-13 2009-07-13 Structure of lightning-protection grounding network in karst area

Country Status (1)

Country Link
CN (1) CN201478470U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101640385B (en) * 2009-07-10 2011-12-07 贵州南源电力科技开发有限公司 Structure of lightning protection grounding network in karst area and manufacturing method thereof
CN105119066A (en) * 2015-07-23 2015-12-02 朱明德 Grounding nail, lightning protection system, power system, building, and petrochemical device
CN105206950A (en) * 2015-10-10 2015-12-30 中国电建集团贵阳勘测设计研究院有限公司 Deep-hole two-point detonation grounding electrode structure and high-pressure pouring construction method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101640385B (en) * 2009-07-10 2011-12-07 贵州南源电力科技开发有限公司 Structure of lightning protection grounding network in karst area and manufacturing method thereof
CN105119066A (en) * 2015-07-23 2015-12-02 朱明德 Grounding nail, lightning protection system, power system, building, and petrochemical device
CN105206950A (en) * 2015-10-10 2015-12-30 中国电建集团贵阳勘测设计研究院有限公司 Deep-hole two-point detonation grounding electrode structure and high-pressure pouring construction method thereof
CN105206950B (en) * 2015-10-10 2017-10-03 中国电建集团贵阳勘测设计研究院有限公司 A kind of 2 pinking earthing pole structures of deep hole and its high pressure pouring construction method

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AV01 Patent right actively abandoned

Granted publication date: 20100519

Effective date of abandoning: 20090713