CN103579786B - A kind of module reducing grounded screen electric resistance - Google Patents

A kind of module reducing grounded screen electric resistance Download PDF

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Publication number
CN103579786B
CN103579786B CN201310487910.2A CN201310487910A CN103579786B CN 103579786 B CN103579786 B CN 103579786B CN 201310487910 A CN201310487910 A CN 201310487910A CN 103579786 B CN103579786 B CN 103579786B
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resistance
sleeve pipe
fall
assembly line
module
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CN103579786A (en
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冯拉俊
曹英
闫爱军
曹默
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In the country (Guangxi) Energy Technology Co Ltd
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Xian University of Technology
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Abstract

The invention discloses a kind of module reducing grounded screen electric resistance, comprise and fall resistance sleeve pipe, the first assembly line and the second assembly line, fall in resistance sleeve pipe and be provided with corrosion-preventing and resistance-reducing module, corrosion-preventing and resistance-reducing module and falling hinders to be provided with successively from inside to outside between sleeve pipe and falls resistance and fill out construction materials contract and soil, one end of first assembly line and corrosion-preventing and resistance-reducing model calling, the other end is connected with ground network through falling after resistance is filled out construction materials contract, soil and fallen resistance sleeve pipe successively, one end of second assembly line with fall the outer wall hindering sleeve pipe and be connected, the other end is connected with ground network.The present invention reduces the module of grounded screen electric resistance, and construction is simple, does not need deep excavation, installs and change easy, do not destroy existed building and surrounding environment, convenient to operation; Applied widely, reduce resistance obvious, a power transmission line shaft tower is installed a module reducing grounded screen electric resistance and just can be ensured that the earial drainage effect of power transmission line reaches designing requirement, makes the resistance of ground network reduce original more than 5 times.

Description

A kind of module reducing grounded screen electric resistance
Technical field
The invention belongs to power transmission line ground network technical field, be specifically related to a kind of module reducing grounded screen electric resistance.
Background technology
Ground connection is connected with the earth by certain point of some position of electric equipment, electric power system, the current by pass of fault current and lightning current is provided, stable potential, Zero potential reference is provided and reduces insulation level, to guarantee the safe operation of electric power system, electric equipment, guarantee the personal safety of power system operation personnel and other staff simultaneously.Grounding function is realized by earthing material or grounding system.
For many years, because the soil resistivity in the areas such as desert area, tor, arid area is higher, the earial drainage effect of ground network is reduced, to such an extent as to the power system accident that China is caused by problem with grounding happens occasionally, the direct economic loss that each accident causes is greatly between hundreds thousand of unit to millions of unit, and the indirect economic loss that the power failure caused by power system accident brings is larger.Particularly in the earth work of power transmission and transformation shaft tower, need long distance to cross over the soil resistivity upper zone such as mountain region, desert, ground connection workload is large, and quantity is many, is difficult to the design standard meeting Resistance of Grounding Grids during project installation.In order to make the earth resistance of soil reach designing requirement, have to increase ground network area or increase Grounding Grids.Increase ground network area, this causes waste of material undoubtedly, and required cost is higher; Increase Grounding Grids, applicable for small-sized ground network, but be not suitable for for large-scale grounding network; Some transformer station also adopts the method for enhancement soil resistivity, but quantities is large, and increase difficulty of construction, construction cost is higher.
Summary of the invention
The object of this invention is to provide a kind of module reducing grounded screen electric resistance, solve desert, tor, arid area soil resistivity higher, make the problem that the earial drainage effect of ground network reduces.
The technical solution adopted in the present invention is, a kind of module reducing grounded screen electric resistance, comprise and fall resistance sleeve pipe, the first assembly line and the second assembly line, fall in resistance sleeve pipe and be provided with corrosion-preventing and resistance-reducing module, corrosion-preventing and resistance-reducing module and falling hinders to be provided with successively from inside to outside between sleeve pipe and falls resistance and fill out construction materials contract and soil, one end of first assembly line and corrosion-preventing and resistance-reducing model calling, the other end is connected with ground network through falling after resistance is filled out construction materials contract, soil and fallen resistance sleeve pipe successively, one end of second assembly line with fall the outer wall hindering sleeve pipe and be connected, the other end is connected with ground network.
Feature of the present invention is also,
Fall on resistance sleeve pipe and be evenly provided with some through holes, the gross area of through hole is the 1/4-2/3 falling resistance bushing outer surface area.
The top falling resistance sleeve pipe is provided with lid, and the bottom falling resistance sleeve pipe is provided with base.
Soil and fall resistance and fill out between construction materials contract and be provided with cloth bag, corrosion-preventing and resistance-reducing module and fall resistance and fill out construction materials contract and be all arranged in cloth bag.
Corrosion-preventing and resistance-reducing module comprises skeleton and is cast in the alloy material of skeleton periphery, and the first assembly line is connected with skeleton by brass bolt.
Alloy material is magnesium alloy, kirsite or aluminium alloy.
Falling resistance, to fill out construction materials contract be by land plaster, bentonite and complex salt by weight the mixture formed for 1:1:1, and the salt in complex salt is identical with the salt contained by soil.
The invention has the beneficial effects as follows, the present invention reduces the module of grounded screen electric resistance, and construction is simple, does not need deep excavation, and falling resistance sleeve pipe is cement products, and the mixture that construction materials contract is land plaster, bentonite and complex salt composition is filled out in inner resistance of falling, and source is wide, and cost is low; Corrosion-preventing and resistance-reducing module is common magnesium alloy, aluminium alloy or kirsite, and component requirements is not strict, simple shape; For the sandy soil ground that soil resistivity is high, adopt magnesium alloy to fall resistive module, adopt aluminium or zinc to fall resistive module for arid area; Applied widely, reduce resistance obvious, a power transmission line shaft tower is installed a module reducing grounded screen electric resistance and just can be ensured that the earial drainage effect of power transmission line reaches designing requirement, makes the resistance of ground network reduce original more than 5 times.
Accompanying drawing explanation
Fig. 1 is the profile that the present invention reduces the module of grounded screen electric resistance.
In figure, 1. fall resistance sleeve pipe, 2. corrosion-preventing and resistance-reducing module, 3. the first assembly line, 4. fall resistance and fill out construction materials contract, 5. soil, 6. the second assembly line, 7. cloth bag, 21. skeletons, 22. alloy materials.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
The present invention reduces the module of grounded screen electric resistance, as shown in Figure 1, comprise and fall resistance sleeve pipe 1, first assembly line 3 and the second assembly line 6, the top falling resistance sleeve pipe 1 is provided with lid, the bottom falling resistance sleeve pipe 1 is provided with base, fall on resistance sleeve pipe 1 and be evenly provided with some through holes, through hole adds the contact area with soil, be conducive to the dispersion of earial drainage, the gross area of through hole is the 1/4-2/3 falling resistance bushing outer surface area, fall in resistance sleeve pipe 1 and be provided with corrosion-preventing and resistance-reducing module 2, corrosion-preventing and resistance-reducing module 2 comprises skeleton 21 and is cast in the alloy material 22 of skeleton 21 periphery, alloy material 22 is magnesium alloy, kirsite or aluminium alloy, corrosion-preventing and resistance-reducing module 2 and falling hinders to be provided with successively from inside to outside between sleeve pipe 1 and falls resistance and fill out construction materials contract 4 and soil 5, fall resistance and fill out construction materials contract 4 for by land plaster, bentonite and complex salt are by weight the mixture for 1:1:1 composition, salt in complex salt is identical with salt contained in soil, soil 5 and fall resistance and fill out between construction materials contract 4 and be provided with cloth bag 7, corrosion-preventing and resistance-reducing module 2 and fall resistance and fill out construction materials contract 4 and be all arranged in cloth bag 7, corrosion-preventing and resistance-reducing module 2 and fall resistance and fill out construction materials contract 4 and be all arranged in cloth bag 7, one end of first assembly line 3 is connected with skeleton 21 by brass bolt, the other end fills out construction materials contract 4 through falling resistance successively, soil 5 with fall resistance sleeve pipe 1 after be connected with ground network, one end of second assembly line 6 with fall the outer wall hindering sleeve pipe 1 and be connected, the other end is connected with ground network.
The installation process that the present invention reduces the module of grounded screen electric resistance is as follows: during in-site installation, first corrosion-preventing and resistance-reducing module 2 is connected with the first assembly line 3, again the outer wall falling resistance sleeve pipe 1 is connected with the second assembly line 6 simultaneously, and then the direct resistance sleeve pipe 1 that will fall is embedded in underground, fall the depth of burying of bottom outline lower than earth mat of resistance sleeve pipe 1, the top falling resistance sleeve pipe 1 is equal with ground; The corrosion-preventing and resistance-reducing module 2 being connected with the first assembly line 3 is put into cloth bag 7, together be placed in and fall in resistance sleeve pipe 1, fill out construction materials contract 4 fill cloth bag 7 with falling resistance, fill up cloth bag 7 with fine earth earth 5 and fall and hinder space between sleeve pipe 1, again the first assembly line 3 and the second assembly line 6 are connected with ground network, finally water, capping.
When later maintenance or replacing corrosion-preventing and resistance-reducing module 2, directly the lid falling resistance sleeve pipe 1 is opened, take out the skeleton (i.e. anode) lost efficacy, pull down the first assembly line 3 and be connected with new skeleton and normal mounting.The module that the present invention reduces grounded screen electric resistance is installed and changes easy, does not destroy existed building and surrounding environment, convenient to operation.
The present invention reduces the design principle of the module of grounded screen electric resistance: the earth resistance that the present invention is based on magnesium alloy, aluminium alloy or kirsite is less than carbon steel, is again the good conductor of electricity, and corrosion-preventing and resistance-reducing module 2 surface area ratio is comparatively large, is conducive to electric current and drains in soil; With the addition of outside corrosion-preventing and resistance-reducing module 2 and fall resistance and fill out construction materials contract 4, ensure that the contact resistance of corrosion-preventing and resistance-reducing module 2 be less than directly with the contact resistance of soil, thus reach the object of reduction ground network contact resistance; In addition, fall resistance to fill out construction materials contract 4 corrosion-preventing and resistance-reducing module 2 can be prevented again due to corrosion oxidation Surface Creation oxide-film; Because the resistance of oxide-film is higher than material body, therefore prevent the generation of oxide-film from being another key of the present invention; In addition, falling resistance, to fill out construction materials contract 4 little with the contact resistance of soil, decreases directly by corrosion-preventing and resistance-reducing module 2 and soil contact resistance, reduce further again the resistance of corrosion-preventing and resistance-reducing module 2; The electrode potential of magnesium alloy, aluminium alloy or kirsite is lower than the electrode potential of carbon steel, has protective action to original ground network.
Embodiment 1
Base is arranged at the bottom falling resistance sleeve pipe 1, and top arranges lid, and fall the cross section of resistance sleeve pipe 1 for circular, the material of falling resistance sleeve pipe 1 selects electroconductive cement; The sleeve outer of resistance sleeve pipe 1 falls internal diameter tube wall height 1000mm, fall resistance sleeve pipe 1 tube wall on open 50, hole, each hole is evenly distributed, fall resistance sleeve pipe 1 tube wall on install 2 standards double end brass bolt, double end brass bolt is connected with the second assembly line 6, falls the thick 50mm of base of resistance sleeve pipe 1, base is opened 4, hole, lid is of a size of
The cross section of corrosion-preventing and resistance-reducing module 2 is circular, and center is skeleton 21 prepared by 60 × 6 × 900mm carbon steel, and skeleton 21 periphery is cast with magnesium alloy, and magnesium alloy 100mm is exposed in skeleton one end, is connected with the first assembly line 3 with brass bolt;
Fall resistance sleeve pipe 1 and imbed underground, the depth of burying is a little less than ground network band steel, corrosion-preventing and resistance-reducing module 2 is placed in and fills out construction materials contract cloth bag 7, together put into and fall resistance sleeve pipe 1, fill in cloth bag 7 and fall resistance and fill out construction materials contract 4, between cloth bag 7 and sleeve pipe 1, fill up soil 5, water, capping, the first assembly line 3 and the second assembly line 6 are all connected with ground network band steel.
Embodiment 2
Base is arranged at the bottom falling resistance sleeve pipe 1, and top arranges lid, and fall the cross section of resistance sleeve pipe 1 for circular, the material of falling resistance sleeve pipe 1 selects electroconductive cement; The sleeve outer of resistance sleeve pipe 1 falls internal diameter tube wall height 1000mm, fall resistance sleeve pipe 1 tube wall on open 50, hole, each hole is evenly distributed, fall resistance sleeve pipe 1 tube wall on install 2 standards double end brass bolt, double end brass bolt is connected with the second assembly line 6, falls the thick 50mm of base of resistance sleeve pipe 1, described base is opened 4, hole, lid is of a size of
The cross section of corrosion-preventing and resistance-reducing module 2 is circular, and center is skeleton 21 prepared by 60 × 6 × 900mm carbon steel, and skeleton 21 periphery is cast with aluminium alloy, and aluminium alloy 100mm is exposed in skeleton one end, is connected with the first assembly line 3 with brass bolt;
Fall resistance sleeve pipe 1 and imbed underground, the depth of burying is a little less than ground network band steel, corrosion-preventing and resistance-reducing module 2 is placed in and fills out construction materials contract cloth bag 7, together put into and fall resistance sleeve pipe 1, fill in cloth bag 7 and fall resistance and fill out construction materials contract 4, between cloth bag 7 and sleeve pipe 1, fill up soil 5, water, capping, the first assembly line 3 and the second assembly line 6 are all connected with ground network band steel.
Embodiment 3
Base is arranged at the bottom falling resistance sleeve pipe 1, and top arranges lid, and fall the cross section of resistance sleeve pipe 1 for circular, the material of falling resistance sleeve pipe 1 selects electroconductive cement; The sleeve outer of resistance sleeve pipe 1 falls internal diameter tube wall height 1000mm, fall resistance sleeve pipe 1 tube wall on open 50, hole, each hole is evenly distributed, fall resistance sleeve pipe 1 tube wall on install 2 standards double end brass bolt, double end brass bolt is connected with the second assembly line 6, falls the thick 50mm of base of resistance sleeve pipe 1, described base is opened 4, hole, lid is of a size of
The cross section of corrosion-preventing and resistance-reducing module 2 is circular, and center is skeleton 21 prepared by 60 × 6 × 900mm carbon steel, skeleton 21 periphery cast kirsite, and kirsite 100mm is exposed in skeleton one end, is connected with the first assembly line 3 with brass bolt;
Fall resistance sleeve pipe 1 and imbed underground, the depth of burying is a little less than ground network band steel, corrosion-preventing and resistance-reducing module 2 is placed in and fills out construction materials contract cloth bag 7, together put into and fall resistance sleeve pipe 1, fill in cloth bag 7 and fall resistance and fill out construction materials contract 4, between cloth bag 7 and sleeve pipe 1, fill up soil 5, water, capping, the first assembly line 3 and the second assembly line 6 are all connected with ground network band steel.
The present invention reduces the module of grounded screen electric resistance, and construction is simple, does not need deep excavation, falls resistance sleeve pipe 1 for cement products, and the mixture that construction materials contract 4 is land plaster, bentonite and complex salt composition is filled out in inner resistance of falling, and source is wide, and cost is low; Corrosion-preventing and resistance-reducing module 2 is common magnesium alloy, aluminium alloy or kirsite, and component requirements is not strict, simple shape; For the extra high sandy soil ground of soil resistivity, adopt magnesium alloy to fall resistive module, adopt aluminium or zinc to fall resistive module for arid area; Applied widely, reduce resistance obvious, a power transmission line shaft tower is installed a module reducing grounded screen electric resistance and just can be ensured that the earial drainage effect of power transmission line reaches designing requirement, makes the resistance of ground network reduce original more than 5 times.

Claims (1)

1. one kind is reduced the module of grounded screen electric resistance, it is characterized in that, comprise and fall resistance sleeve pipe (1), first assembly line (3) and the second assembly line (6), described falling in resistance sleeve pipe (1) is provided with corrosion-preventing and resistance-reducing module (2), described corrosion-preventing and resistance-reducing module (2) and falling is hindered to be provided with successively from inside to outside between sleeve pipe (1) and is fallen resistance and fill out construction materials contract (4) and soil (5), one end of described first assembly line (3) is connected with described corrosion-preventing and resistance-reducing module (2), the other end fills out construction materials contract (4) through falling resistance successively, soil (5) with fall resistance sleeve pipe (1) be connected with ground network afterwards, one end of described second assembly line (6) with fall the outer wall hindering sleeve pipe (1) and be connected, the other end is connected with ground network, fall in resistance sleeve pipe (1) and be evenly provided with some through holes, the gross area of described through hole is for falling the 1/4-2/3 of resistance sleeve pipe (1) exterior surface area, the top falling resistance sleeve pipe (1) is provided with lid, the bottom falling resistance sleeve pipe (1) is provided with base, soil (5) and fall resistance and fill out between construction materials contract (4) and be provided with cloth bag (7), described corrosion-preventing and resistance-reducing module (2) and fall resistance and fill out construction materials contract (4) and be all arranged in described cloth bag (7), corrosion-preventing and resistance-reducing module (2) comprises skeleton (21) and is cast in the peripheral alloy material (22) of described skeleton (21), described first assembly line (3) is connected with skeleton (21) by brass bolt, described alloy material is magnesium alloy, kirsite or aluminium alloy, fall resistance and fill out construction materials contract (4) for by land plaster, bentonite and complex salt are by weight the mixture for 1:1:1 composition, salt in complex salt is identical with salt contained in described soil (5).
CN201310487910.2A 2013-10-17 2013-10-17 A kind of module reducing grounded screen electric resistance Active CN103579786B (en)

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CN108232485A (en) * 2018-03-20 2018-06-29 国网陕西省电力公司电力科学研究院 A kind of explosion grounding low-resistance composite material
CN113285250A (en) * 2021-05-17 2021-08-20 东莞市长益光电有限公司 Conductive grounding device and using method

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CN1209770C (en) * 2002-08-01 2005-07-06 寇承平 Physical grounding resistance reducing agent
CN1805218A (en) * 2005-01-13 2006-07-19 李新利 Quick-mounted earthing pole containing resistance-reducing agent
CN101771203A (en) * 2010-03-05 2010-07-07 陕西电力科学研究院 Corrosion-preventing and resistance-reducing grounding module
CN102324260B (en) * 2011-06-28 2012-08-01 成都桑莱特科技股份有限公司 Deep well resistance-reducing packing
CN202749522U (en) * 2012-08-21 2013-02-20 大唐湘潭发电有限责任公司 Anti-corrosion grounding net
CN103107426B (en) * 2013-02-28 2015-05-13 北京中能建源科技开发有限公司 Multi-path lighting protection bag and pre-buried method of lighting protection bag in soil

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Inventor after: Zeng Yuan

Inventor after: Feng Lajun

Inventor after: Cao Ying

Inventor after: Yan Aijun

Inventor after: Cao Mo

Inventor before: Feng Lajun

Inventor before: Cao Ying

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Effective date of registration: 20170815

Address after: 530000 the Guangxi Zhuang Autonomous Region Nanning Qingxiu District National Road No. 135 hydropower building on the third floor

Patentee after: In the country (Guangxi) Energy Technology Co Ltd

Address before: 710048 Shaanxi city of Xi'an Province Jinhua Road No. 5

Patentee before: Xi'an University of Technology

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