CN200983408Y - Long-effect resistance reduction contact pole - Google Patents
Long-effect resistance reduction contact pole Download PDFInfo
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- CN200983408Y CN200983408Y CN 200620093643 CN200620093643U CN200983408Y CN 200983408 Y CN200983408 Y CN 200983408Y CN 200620093643 CN200620093643 CN 200620093643 CN 200620093643 U CN200620093643 U CN 200620093643U CN 200983408 Y CN200983408 Y CN 200983408Y
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- resistance
- earth electrode
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- soil
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Abstract
The utility model relates to a long-acting electric resistance-reducing earth electrode, in particular to an electric resistance for effectively reducing resistance, and comprises a perpendicular steel tube and a polarity pneumostome. The utility model is characterized in that the polarity pneumostome is arranged on the tube wall of the perpendicular steel tube. The utility model has the properties of reducing the earth resistance, stable corrosion resistance, controlling the soil humidity around the earth electrode, and the behavior of reducing the electrical resistivity of the soil, which achieves that the resistance of the earth electrode is reduced below 0.5 omega and remains stable. The earth electrode which adopts dielectric dry power and injection structure has the distinct behavior of reducing the resistance and stabilizing the electrical resistivity of the soil. The inhibitor must be added into the injection, and a zinc alloy protection plate must be installed outside the tube, which is capable of helping the earth electrode remain stable state for a long period. Therefore, new economic benefits and fairly social benefits for many industries are brought on.
Description
Technical field
The utility model relates to a kind of earthing device, relates in particular to a kind of long-term-effective dropping resistance earth electrode, is a kind of earth electrode that can more effectively reduce resistance.
Background technology
The electric device in electric power system or the building and the ground connection of equipment finally will be realized by earth electrode.Though the ground connection theory is ripe already, because the continuous development of electrical engineering technology is fallen the resistance technology to ground connection and proposed higher requirement, people also study novel grounded technology in order to adapt to new requirement constantly.Ground connection (utmost point) net such as exploitation resistance reducing agent, research and design various ways.Especially since the electric power system Applied Computer Techniques, the resistance of earth electrode has been required to drop to below 0.5 Ω, and required to keep stable.
The essence of grounding technology research reduces grounding resistance exactly.In general, earth resistance comprises:
A. resistance in the earth electrode metallic conductor;
B. the metallic conductor surface contacts transition resistance with soil;
C. soil (the earth) spreading resistance.
The metallic conductor internal resistance is very little, and proportion can be ignored in integral ground resistance.Transition resistance depends on the physical and chemical performance of metal surface state and soil, and it is a destabilizing factor, and resistance value is not of uniform size.Spreading resistance depends on soil texture, mainly is reflected in soil resistivity.This shows,, and keep its long-acting stability, can satisfy the new requirement of grounding technology if can reduce soil resistivity and earth electrode transition resistance.
The earth electrode material that the category-A of existing electrical system or category-B ground connection are adopted has galvanized steel, graphite and copper.Many with coating steel pipe in China, angle steel and band steel are main.The shape of earth electrode is multiple, and that often selects for use has flat, square and a circle.Select for use galvanized steel economical and practical, select graphite electrode cost height for use and need mass filler, copper material, project cost is high and originate inadequate.Simple metal material is imbedded and is subjected to corrosion after underground, and its earth resistance is increased.The earth electrode of above-mentioned three kinds of materials can not be controlled and improve transition resistance and soil resistivity on every side.
The utility model content
In order to solve the above-mentioned problems in the prior art, the utility model proposes a kind of long-term-effective dropping resistance earth electrode, the problem that solved the resistance height, subjects to corrode has the effect that the performance that reduces earth resistance, stable corrosion protection ability and control earth electrode surrounding soil moisture reduce soil resistivity.
The long-term-effective dropping resistance earth electrode comprises rectilinear steel pipe and electrode spiracle, and the electrode spiracle is set on the tube wall of rectilinear steel pipe.
The utility model has the advantages of as follows:
Its manufacturing and installing engineering cost are higher than the galvanized steel earth electrode, but will be well below graphite and copper (adorning electrolytical in comprising) earth electrode.But compare with zinc-plated steel earthing pole from the long-term-effective dropping resistance performance, its performance is better than zinc-plated steel earthing pole, its grounding resistance descends more than 20%, situation at rain gas dry days is descended, the fluctuation range of its resistance value is less than 30%, and the performance of its stability and control soil resistivity is that other earth electrode is incomparable.Therefore, it brings new economic benefit can for numerous row (enterprise) industry.Because its security and stability will bring considerable social benefit.
Description of drawings
Fig. 1 is the structural representation of rectilinear steel pipe;
Fig. 2 is the structural representation of horizontal steel pipe;
Fig. 3 is the connection diagram of rectilinear steel pipe and horizontal steel pipe;
Fig. 4 is that resistive result of the test schematic diagram falls in one pole.
Wherein: rectilinear steel pipe 1, electrode spiracle 2, topping up pipe 3, plunger 4, horizontal steel pipe 5.
Embodiment
The inside of described rectilinear steel pipe 1 is provided with topping up pipe 3, and an end of steel pipe is arranged to pointed.When steel pipe being imbedded when underground, need connect topping up pipe 3 flexible pipes more than the ground, after charging electrolyte, electrolyte penetrates into by electrode spiracle 2 and produces physical-chemical reaction in the soil and reduce soil resistivity.The outer surface of steel pipe is provided with zinc coat and zinc magnesium alloy, prevents corrosion; The other end of steel pipe is connected with plunger 4.
1. long-term-effective dropping resistance earth electrode structure
The long-term-effective dropping resistance earth electrode is made up of coating steel pipe, the dried agent of interior dress electrolyte, additive, topping up pipe, electrode spiracle, sees accompanying drawing 1,2.Long-term-effective dropping resistance ground connection level is divided into two classes, the vertical grounding electrode and the horizontal grounding utmost point.
How much what contain the dried dosage of electrolyte in the earth electrode is according to deciding the service life of electrode breathing pore size and earth electrode.Kirsite protection anode is equipped with in the electrode outside, and its size or quality are to decide according to the earth electrode use or the protected time limit.The coating steel pipe inwall is coated with the material with FEVE, about 10-15 μ m.Its center is equipped with the topping up pipe, install promptly imbed underground after, carry out topping up with equipment such as plunger displacement pumps so that electrolyte expansion produces composition, reach the purpose that physical-chemical reaction reduces soil resistivity.
2. long-term-effective dropping resistance earth electrode specification and purposes.See Table 1
2.1 topping up classification model and purposes.See Table 2
2.2 topping up composition.See Table 3
3. the long-term-effective dropping resistance earth electrode is installed
3.1 vertical grounding electrode is installed
Do not having rubble or rock address layer, the soft area of soil property can be adopted and directly be rammed method.When the earth electrode burial depth surpasses 1.5m, must adopt boring back throw-in play earlier.
3.2 the horizontal grounding utmost point is installed
The horizontal grounding utmost point is installed, and should adopt artificial ditching to imbed or mechanical mining method.Carry out backfill then.
3.3 before earth electrode is imbedded, the adhesive tape strip of paper used for sealing at spiracle place all must be torn.
3.4 imbed underground after, the topping up flexible pipe must be connected more than the ground, use when treating topping up.After topping up finishes, again flexible pipe is imbedded underground.
3.5 send the reparation of electric field region, have only when earth electrode to install, and technical indicator could be repaired after reaching requirement about change.
4. long-term-effective dropping resistance earth electrode one pole performance
4.1 fall the resistance characteristic
Long-term-effective dropping resistance ground connection one pole result of the test proves that it has resistance-reducing performance steady in a long-term.Accompanying drawing 4 is a result of the test, and it is the result who is in the medium-term and long-term test of similar geological environment with the galvanized pipe of same shape specification.
4.2 anti-corrosion performance
The taking-up surface state was intact after the long-term-effective dropping resistance earth electrode was imbedded the ground next year.Zinc coat blackening of galvanized pipe earth electrode and spottiness.The zinc alloy anode consumption 4.3g of long-term-effective dropping resistance earth electrode.The earth electrode specification is that the surface area approximation of Φ 57 * 1500 is 0.27m
2Average anode material unit consumption is 16g/m
2A.The protection potential of two kinds of electrodes begins comparatively close.Gap is gradually big after spending 1 year, and its measurement result sees Table 4
4.3 reduce the soil resistivity function
This test is only spread 2#, 3# liquid the one pole topping up and is reduced the soil resistivity function test.After parenteral solution injected earth electrode, electrolyte expansion produced diffusion, constantly diffusion around earth electrode under the effect of pressure, and chemical reaction takes place with rock sand etc., make it be converted into the soil of low resistance.
In order to prove the conversion situation of soil property, except that measuring earth electrode resistance, we adopt apart from one pole 20cm, and dark 50cm place soil contains F
-, SO
4 2-Content illustrate that experimental result sees Table 5.
Adopt the earth electrode of electrolyte dry powder and parenteral solution structure to have the effect of falling resistance and stable soil resistivity significantly.Parenteral solution must add corrosion inhibiter; Pipe is outer must install kirsite protection piece, can make earth electrode be in stable state for a long time like this.
The metal tube sectional area of earth electrode should satisfy the requirement of thermal stability.
Table 1
| Classification | Model | Specification | Purposes |
| Rectilinear | TY-1 TY-2 TY-3 | Φ57×1500 Φ57×2500 Φ75×2500 | A, lightning protected, the electrostatic grounding of category-B electric installation ground connection |
| Horizontal | FX-1 FX-2 FX-3 | 25×100×2500 25×100×1500 25×50×1500 | A, lightning protected, the electrostatic grounding of category-B electric installation ground connection |
Table 2
| Classification | Model | | Remarks |
| Dauk | |||
| 1# | Be used for dauk, loess formation, contain the sand layer | Soil resistivity: 80-1000 Ω m | |
| | 2# | Sand, a small amount of rubble | Soil resistivity: 1000-2500 Ω m |
| Gravel- | 3# | Sand, grit, tor stratum | Soil resistivity: 2500-10000 Ω m |
Table 3
| The topping up model | Form | The |
| 1# | NaCl 1-3% water all the other | 1. till the one pole earth resistance no longer descends, as follows 2. injection pressures: 1-10Mpa.Inject 5-50 ℃ of |
| 2# | NaCl 1-3% ZnSO4 1-5% water all the other | |
| 3# | ZnSO4 1-5% HF 1-5% L826 0.1% water all the other |
Table 4
| The earth electrode kind | The test potential time | Potential value is (to CuSO 4Saturated reference electrode)/mv |
| The coating steel pipe earth electrode | 2002-06-30 2003-07-20 | -875 -805 |
| The long-term-effective dropping resistance earth electrode | 2002-06-30 2003-07-20 | -905 -896 |
Table 5
| | Content | 1% | Number/h when earth electrode is imbedded | ||
| Before the diffusion | After the diffusion | ||||
| SO 4 2- CL - F - | 0.001 0.002 ---- | 1.002 0.806 0.086 | 240 240 240 | ||
Claims (4)
1, long-term-effective dropping resistance earth electrode comprises rectilinear steel pipe (1) and electrode spiracle (2), it is characterized in that on the tube wall of rectilinear steel pipe (1) electrode spiracle (2) being set.
2, long-term-effective dropping resistance earth electrode according to claim 1 is characterized in that the inside of described rectilinear steel pipe (1) is provided with topping up pipe (3).
3, long-term-effective dropping resistance earth electrode according to claim 1 is characterized in that kirsite protection piece is equipped with in the outside of described rectilinear steel pipe (1).
4, long-term-effective dropping resistance earth electrode according to claim 1 is characterized in that described rectilinear steel pipe (1) and horizontal steel pipe (5) weld together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620093643 CN200983408Y (en) | 2006-10-13 | 2006-10-13 | Long-effect resistance reduction contact pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620093643 CN200983408Y (en) | 2006-10-13 | 2006-10-13 | Long-effect resistance reduction contact pole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200983408Y true CN200983408Y (en) | 2007-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620093643 Expired - Fee Related CN200983408Y (en) | 2006-10-13 | 2006-10-13 | Long-effect resistance reduction contact pole |
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| Country | Link |
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| CN (1) | CN200983408Y (en) |
Cited By (5)
| 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 |
| CN102353876A (en) * | 2011-06-07 | 2012-02-15 | 山东希波电气科技股份有限公司 | Online detection device for local discharge of high-voltage cable for high-speed railway locomotive |
| CN102969579A (en) * | 2012-11-13 | 2013-03-13 | 中国石油天然气集团公司 | Grounding electrode |
| CN103872469A (en) * | 2014-02-24 | 2014-06-18 | 国网电力科学研究院武汉南瑞有限责任公司 | Novel non-metal anti-corrosion grounding material |
| CN104979648A (en) * | 2015-07-15 | 2015-10-14 | 国家电网公司 | Electrode for measuring grounding resistance |
-
2006
- 2006-10-13 CN CN 200620093643 patent/CN200983408Y/en not_active Expired - Fee Related
Cited By (5)
| 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 |
| CN102353876A (en) * | 2011-06-07 | 2012-02-15 | 山东希波电气科技股份有限公司 | Online detection device for local discharge of high-voltage cable for high-speed railway locomotive |
| CN102969579A (en) * | 2012-11-13 | 2013-03-13 | 中国石油天然气集团公司 | Grounding electrode |
| CN103872469A (en) * | 2014-02-24 | 2014-06-18 | 国网电力科学研究院武汉南瑞有限责任公司 | Novel non-metal anti-corrosion grounding material |
| CN104979648A (en) * | 2015-07-15 | 2015-10-14 | 国家电网公司 | Electrode for measuring grounding resistance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071128 Termination date: 20091113 |