CN100498978C - Modified grounding anti-corrosion resistance reduction agent - Google Patents
Modified grounding anti-corrosion resistance reduction agent Download PDFInfo
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- CN100498978C CN100498978C CNB2006100929634A CN200610092963A CN100498978C CN 100498978 C CN100498978 C CN 100498978C CN B2006100929634 A CNB2006100929634 A CN B2006100929634A CN 200610092963 A CN200610092963 A CN 200610092963A CN 100498978 C CN100498978 C CN 100498978C
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- oxide
- reducing agent
- graphite
- corrosion resistance
- bentonite
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Abstract
The invention discloses a long-acting ground antiseptic resistance-reducing agent (modified), which is characterized by the following: consisting of sodium base alta-mud and graphite; making each item of parameter satisfy all index; keeping resistance property stable under multitime industrial frequency and punching electricity action; protecting ground metal; reducing erosion rate from 0.0245 mm per year to 0.0064 mm per year.
Description
Technical field
The invention belongs to the physics resistance reducing agent, relate to a kind of improved grounding anti-corrosion resistance reducing agent that reduces the power equipment earth resistance, prevents the earth electrode corrosion, it is applied in the system of electric power, post and telecommunications, oil, railway, skyscraper, computer, telephone room and other employing ground network.
Background technology
In order to reduce the earth resistance of power equipment, the ground connection that makes power equipment under normal circumstances, a situation arises for accident down and under the thunderbolt situation, and the earth potential of power equipment installation place is fixing in allowed limits, to guarantee the safety of the person and equipment.Since the disclosed CN1062888C long service life, corrosion-proof, and electric resistance reducing agent for earthing launch products, because its resistance-reducing performance excellence is highly commended by customers deeply.Though conduct electricity very well but its weak point is the potassium chloride that adds in its composition, bury ground after, As time goes on its Corrosion Protection to the ground connection metallic object is relatively poor.
Summary of the invention
The objective of the invention is to address the above problem, provide a kind of electric conductivity better, the improved grounding anti-corrosion resistance reducing agent that corrosion resistance is more excellent.
The inventor is through repetition test repeatedly, research, selected for use electric conductivity better, the more excellent a kind of nonmetal breeze graphite of corrosion resistance substitutes potassium chloride in the former invention and makes it long service life, corrosion-proof, and electric resistance reducing agent for earthing to fall the resistance decay resistance after improving better, so propose following technical scheme: a kind of improved grounding anti-corrosion resistance reducing agent, it is made up of bentonite and graphite, wherein each weight percentages of components is: bentonite 50-99%, graphite 1-50% contains silica, titanium oxide, iron oxide, aluminium oxide, calcium oxide, potassium oxide, sodium oxide molybdena in the bentonite.The weight percent content of each essential element is as shown in table 1 in the bentonite.
Table 1
| Composition | Silica | Titanium oxide | Iron oxide | Aluminium oxide | Calcium oxide | Potassium oxide | Sodium oxide molybdena |
| Content (%) | 40-70％ | 0.01-3％ | 0.5-9％ | 2-20％ | 1-7％ | 0.1-6％ | 1-6％ |
The effect of each composition is respectively: silica has extremely strong suction, water holding capacity, be mainly used in and store electrolyte and moisture, and higher expansion character is arranged, can make resistance reducing agent closely wrap the metal earth electrode, starvation plays the unpolarizing that stops oxygen to the intrusion of earth electrode; Titanium oxide can keep the stability of resistance reducing agent except that possessing electric action; Sodium oxide molybdena, potassium oxide etc. are active metal oxide, have good electric conductivity, can reduce the industrial frequency electric resistance rate greatly; Calcium oxide, iron oxide, aluminium oxide etc. have stronger moisture absorption, form the jelly of crystalloid or crystallization defective mode, in the expansion that takes place under water and other the material effect between crystal, enlarged the contact-making surface of earth electrode and the earth, improve the compaction rate that earth electrode contacts with the earth, thereby reduced earth resistance.Simultaneously, the colloid that it forms can prevent the evaporation of moisture and the loss of conductive materials, and this is the main cause that keeps long-acting.Graphite: its fixed carbon content is 60-99%.Graphite is a kind of nonmetallic mineral that has good electric conductivity and have stronger decay resistance, its chemical property is more stable, have higher electric stability and high osmosis, can around the soil electrode, form infiltration area widely, to all pressing advantageous particularly, it is the scalable pH value also, makes it be slightly larger than 7, and earth electrode is had good anticorrosive effect.
Improved grounding anti-corrosion resistance reducing agent is a kind of solid particle sprills; it also can be solid modules; its resistance reducing effect is remarkable especially; metal earth electrode anti-corrosion protection had king-sized effect; under power frequency heavy impulse current effect repeatedly; electrical resistivity property is stable, to all pressing advantageous particularly, earth electrode good especially corrosion-resisting function is arranged.
The inventor entrusts State Grid Corporation of China's Wuhan High Voltage Research Institute in March, 2006 improved grounding anti-corrosion resistance reducing agent to be carried out the impulse current resistance test, the power current resistance test, pH value, resistance reducing agent are tested steel earth electrode corrosion test etc., ask for an interview table 2.
The improved grounding anti-corrosion resistance reducing agent of table 2 pilot project gathers
The invention has the beneficial effects as follows its stable chemical performance; whole indexs of its every technical parameter all meet the requirements; resistivity 1.26 Europe rice; under repeatedly power frequency and impulse current effect, electrical resistivity property is stable, and is desirable to the protection of metal grounding anti-corrosion; average corrosion rate (is example with zinc-plated round steel) is reduced to 0.0064mm/ by 0.0245mm/; prepare easyly, cost is low, easy construction.
Embodiment
The invention will be further described below in conjunction with embodiment.
A kind of improved grounding anti-corrosion resistance reducing agent, it is made up of sodium bentonite and graphite, wherein each weight percentages of components is: sodium bentonite 50-99%, graphite 1-50%, the weight percent content of each essential element is silica: 40-70%, titanium oxide 0.01-3%, iron oxide 0.5-9%, aluminium oxide 2-20%, calcium oxide 1-7%, potassium oxide 0.1-6%, sodium oxide molybdena 1-6% in the sodium bentonite, and the fixed carbon content in the graphite is 60-90%.With sodium bentonite pulverize, abrasive dust, mix to mix well getting final product with graphite powder.It can use the method for applying and the soak method done, and general main is the soak method.Prepare a bulk of iron sheet at the construction field (site), resistance reducing agent is added water on stir with spade, around the earth electrode that then resistance reducing agent is laid in, its construction technology is the same with ready-mixed concrete easy.
The sodium bentonite that each component content of the prescription of the embodiment of the invention meets table 1 ratio is 90%, graphite powder is 10%, and its fixed carbon content is 81%.Sodium bentonite main component content is: silica: 53%, titanium oxide 1%, iron oxide 7%, aluminium oxide 15%, calcium oxide 5%, potassium oxide 4%, sodium oxide molybdena 5%.The fixed carbon content of graphite powder is 81%.
Claims (2)
1, a kind of improved grounding anti-corrosion resistance reducing agent, it is characterized in that: it is made up of bentonite and graphite, wherein each weight percentages of components is: bentonite 50-99%, graphite 1-50%, the weight percent content of each essential element is silica: 40-70%, titanium oxide 0.01-3%, iron oxide 0.5-9%, aluminium oxide 2-20%, calcium oxide 1-7%, potassium oxide 0.1-6%, sodium oxide molybdena 1-6% in the bentonite, and the fixed carbon content in the graphite is 60-90%.
2, improved grounding anti-corrosion resistance reducing agent according to claim 1 is characterized in that: it is a kind of solid particle sprills or solid modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100929634A CN100498978C (en) | 2006-06-13 | 2006-06-13 | Modified grounding anti-corrosion resistance reduction agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100929634A CN100498978C (en) | 2006-06-13 | 2006-06-13 | Modified grounding anti-corrosion resistance reduction agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1866409A CN1866409A (en) | 2006-11-22 |
| CN100498978C true CN100498978C (en) | 2009-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100929634A Expired - Fee Related CN100498978C (en) | 2006-06-13 | 2006-06-13 | Modified grounding anti-corrosion resistance reduction agent |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101719393B (en) * | 2008-12-30 | 2012-01-04 | 中国瑞林工程技术有限公司 | Biological bacteria grounded resistance-reducing agent |
| CN101882477B (en) * | 2010-06-25 | 2012-05-30 | 国网电力科学研究院武汉南瑞有限责任公司 | Long-acting antiseptic resistance-reducing agent |
| CN103198872B (en) * | 2013-03-20 | 2016-08-03 | 国家电网公司 | A kind of fall hinders compositions and the application in soil thereof |
| CN104103334A (en) * | 2014-06-19 | 2014-10-15 | 国家电网公司 | Novel high-efficiency anti-corrosive physical resistance reducing agent for galvanized steel grounding grid |
| CN104449560B (en) * | 2014-11-18 | 2016-09-28 | 国网河南省电力公司漯河供电公司 | A kind of grounding device preservative based on environment-friendly long-life and preparation method |
| CN106654616B (en) * | 2016-10-07 | 2018-11-30 | 东阳市特意新材料科技有限公司 | A kind of preparation method of corrosion-resistant earthing material |
| CN108123232B (en) * | 2016-11-29 | 2020-04-21 | 国网河南省电力公司安阳供电公司 | Grounding body with conductive and corrosion-resistant functions and preparation method thereof |
| CN109349277A (en) * | 2018-10-08 | 2019-02-19 | 湖北捷地安电气有限公司 | A kind of environmental protection rush vegetation growth type grounding resistance-reducing material |
-
2006
- 2006-06-13 CN CNB2006100929634A patent/CN100498978C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1866409A (en) | 2006-11-22 |
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