CN106654616B - A kind of preparation method of corrosion-resistant earthing material - Google Patents
A kind of preparation method of corrosion-resistant earthing material Download PDFInfo
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- CN106654616B CN106654616B CN201610870524.5A CN201610870524A CN106654616B CN 106654616 B CN106654616 B CN 106654616B CN 201610870524 A CN201610870524 A CN 201610870524A CN 106654616 B CN106654616 B CN 106654616B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
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Abstract
The present invention relates to a kind of preparation methods of corrosion-resistant earthing material, belong to earthing material preparation technical field.The present invention is first by aluminium ash and distilled water hybrid filtering; obtained filter residue air-dries rear and sodium metasilicate mixed calcining; and it pulverizes and sieves; obtain sieving particle; it will be filtered after the material mixings such as itself and hydrochloric acid, copper chloride again; obtain filter residue; and it is mixed with substances such as nickelous carbonates; heated, melting and extruding; corrosion-resistant earthing material base-material is obtained, is finally soaked in polyacrylamide solution, its surface package polyacrylamide is protected; it takes out and air-dries, corrosion-resistant earthing material can be obtained.Corrosion-resistant earthing material corrosion rate prepared by the present invention is slower, ensure that the safe operation of power grid, while will not pollute to soil.
Description
Technical field
The present invention relates to a kind of preparation methods of corrosion-resistant earthing material, belong to earthing material preparation technical field.
Background technique
In order to realize that zero-potential point and the earth of various electrical equipments make benign electrical connection, various electrical equipment zero potentials
Position is connect with metallic ground body, and is realized working earthing by the good conducting of metallic ground body and the earth, protective grounding, prevented
The system requirements such as thunder and lightning, the difference of shell soil texture will ensure metal grounding body and various soil（Especially big resistivity
Soil）Good electrical connection, needs that a kind of performance is stable, conductivity is high, does not corrode between metallic ground body and the interface of soil
Metallic ground body, the material that electrolyte can be received.Earthed system is concealed work, the service life of design requirement and peripheral facilities
Quite, general >=30 years, grounded screen is chronically in the adverse circumstances of underground, and chemical attack and the electrochemistry for being subjected to soil are rotten
Erosion, still suffers from the corrosion of diffusing and stray electrical current, especially in the stronger soil region of corrosivity, corrodes more serious.
Currently used earthing material is mainly galvanized steel and fine copper.It is done using galvanized steel and is mainly asked existing for earthing material
Topic is that corrosion rate is higher in the soil, and heavy corrosion occurs in the zinc-plated earthing material of operation 5~10 years, or even rust breaks, and causes
Ground resistance increases, and diffusing reduces, and causes accident when by thunder and lightning or short circuit, not can guarantee electric power netting safe running.Fine copper is
Good grounding material, conducting and diffusing ability are strong, and Corrosion resistance can be good, it is ensured that and grounded screen reliability service 25~
30 years.But a large amount of embedments of copper in the soil will cause heavy metal pollution, in China standard of soil environment quality GB15618-
(content of copper ion should be lower than 400mg/kg in regulation soil) is used by limitation in 1995, and the price of copper is high, grounded screen
Cost is 5~6 times of galvanized steel.
Summary of the invention
The technical problems to be solved by the invention：For with galvanized steel do the corrosion rate of earthing material in the soil compared with
Height causes ground resistance to increase, and diffusing is reduced, and causes accident when by thunder and lightning or short circuit, not can guarantee electric power netting safe running,
And copper the problem of will cause heavy metal pollution of soil as earthing material, the present invention first by aluminium ash and distilled water hybrid filtering,
Obtained filter residue air-dry after with sodium metasilicate mixed calcining, and pulverize and sieve, obtain the particle that is sieved, then by itself and hydrochloric acid, copper chloride
Etc. filter after material mixings, obtain filter residue, and it is mixed with substances such as nickelous carbonates, heated, melting and extruding obtain
Corrosion-resistant earthing material base-material, is finally soaked in polyacrylamide solution, its surface package polyacrylamide is carried out
Protection is taken out and is air-dried, corrosion-resistant earthing material can be obtained.Corrosion-resistant earthing material corrosion rate prepared by the present invention is slower,
It ensure that the safe operation of power grid, while soil will not be polluted.
In order to solve the above technical problems, the technical solution adopted by the present invention is that：
（1）In mass ratio 1:3, it takes aluminium ash and distilled water to be put into blender, 10~15min is stirred with 300r/min, then
Filtered after standing 20~30min, filter residue is carried out it is air-dried, then in mass ratio 2:1, the filter residue after air-drying and sodium metasilicate are mixed equal
It is even, it is put into calcining furnace, set temperature is 400~500 DEG C, calcines 1~2h, cools to room temperature with the furnace, calcined material is taken out, put
Enter in pulverizer and crush, sieve with 100 mesh sieve, collects sieving particle；
（2）According to parts by weight, taking 50~60 parts of above-mentioned sieving particles, 16~18 parts of mass fractions is 10% hydrochloric acid, 12
~15 parts of distilled water, 3~6 parts of nickelous carbonates, 2~4 parts of gypsum rubrums, 1~3 part of dodecyl sodium sulfate and 0.8~1.5 part of chlorination
Above-mentioned sieving particle, mass fraction are first that 10% hydrochloric acid and copper chloride are uniformly mixed, are placed in ultrasonator and shake by copper
10~15min is swung, is then filtered, filter residue is collected；
（3）Above-mentioned filter residue is mixed with the distilled water of above-mentioned parts by weight, nickelous carbonate, gypsum rubrum and dodecyl sodium sulfate
Uniformly, it is put into microwave applicator, is heated to 90~95 DEG C, keep the temperature 1~2h, then be filtered, filter residue is put into baking oven, if
Determining temperature is 90 DEG C, and dried object is then put into smelting furnace by dry 2~3h, and set temperature is 700~800 DEG C, melting 10~
15min；
（4）After above-mentioned melting, melting matter is put into heat extruder, set temperature is 300~400 DEG C, pressure
For 43~52MN, extruded velocity is 2~4m/s, collects extrudate, obtains corrosion-resistant earthing material base-material, and be soaked in quality
Score is to stand 7~9h in 0.2% polyacrylamide solution, then take out, place into air-dry machine and air-dry, can obtain corrosion resistant
Lose earthing material.
Application method of the invention：11~13m grounding body is made in corrosion-resistant earthing material prepared by the present invention first, then
Taking width is 0.5~0.8m, and depth is 0.5~0.7m, and length is the ground connection ditch of 13~15m, and manufactured grounding body is placed in
It is grounded in ditch, is compacted after being backfilled using uniform soil, after standing 10~15 days, after tested, corrosion rate is lower than 0.0029mm/
A, resistivity is less than 1 × 10-5Ω·m。
The present invention is compared with other methods, and advantageous effects are：
（1）Corrosion-resistant earthing material corrosion rate prepared by the present invention is slower, and corrosion rate is lower than 0.0029mm/a；
（2）Corrosion-resistant earthing material prepared by the present invention will not pollute soil, and it is with good electric conductivity
Can, resistivity is less than 1 × 10-5Ω·m；
（3）Corrosion-resistant earthing material preparation process prepared by the present invention is simple, required at low cost.
Specific embodiment
First in mass ratio 1:3, it takes aluminium ash and distilled water to be put into blender, 10~15min is stirred with 300r/min, then
Filtered after standing 20~30min, filter residue is carried out it is air-dried, then in mass ratio 2:1, the filter residue after air-drying and sodium metasilicate are mixed equal
It is even, it is put into calcining furnace, set temperature is 400~500 DEG C, calcines 1~2h, cools to room temperature with the furnace, calcined material is taken out, put
Enter in pulverizer and crush, sieve with 100 mesh sieve, collects sieving particle；
Again according to parts by weight, take 50~60 parts of above-mentioned sieving particles, 16~18 parts of mass fractions be 10% hydrochloric acid, 12~
15 parts of distilled water, 3~6 parts of nickelous carbonates, 2~4 parts of gypsum rubrums, 1~3 part of dodecyl sodium sulfate and 0.8~1.5 part of copper chloride,
It is first that 10% hydrochloric acid and copper chloride are uniformly mixed by above-mentioned sieving particle, mass fraction, is placed in ultrasonator and vibrates
10~15min is then filtered, and collects filter residue；Then by distilled water, nickelous carbonate, the Han Shui of above-mentioned filter residue and above-mentioned parts by weight
Stone and dodecyl sodium sulfate are uniformly mixed, and are put into microwave applicator, are heated to 90~95 DEG C, keep the temperature 1~2h, then carried out
Filter, filter residue is put into baking oven, and set temperature is 90 DEG C, and dried object is then put into smelting furnace by dry 2~3h, setting temperature
Degree is 700~800 DEG C, 10~15min of melting；Finally after above-mentioned melting, melting matter is put into heat extruder, is set
Temperature is 300~400 DEG C, and pressure is 43~52MN, and extruded velocity is 2~4m/s, collects extrudate, obtains corrosion-resistant earthing material
Base-material, and being soaked in mass fraction is to stand 7~9h in 0.2% polyacrylamide solution, then take out, place into wind
It is air-dried in dry machine, corrosion-resistant earthing material can be obtained.
Example 1
First in mass ratio 1:3, it takes aluminium ash and distilled water to be put into blender, 15min is stirred with 300r/min, then stand
Filtered after 30min, filter residue is carried out it is air-dried, then in mass ratio 2:1, the filter residue after air-drying and sodium metasilicate are uniformly mixed, are put into
In calcining furnace, set temperature is 500 DEG C, calcines 2h, cools to room temperature with the furnace, calcined material is taken out, be put into pulverizer and crush,
It sieves with 100 mesh sieve, collects sieving particle；Again according to parts by weight, taking 60 parts of above-mentioned sieving particles, 18 parts of mass fractions is 10% salt
Acid, 15 parts of distilled water, 6 parts of nickelous carbonates, 4 parts of gypsum rubrums, 3 parts of dodecyl sodium sulfates and 1.5 parts of copper chlorides, first by above-mentioned mistake
It sieves particle, mass fraction to be uniformly mixed for 10% hydrochloric acid and copper chloride, is placed in ultrasonator and vibrates 15min, subsequent mistake
Filter residue is collected in filter；Then by distilled water, nickelous carbonate, gypsum rubrum and the dodecyl sodium sulfonate of above-mentioned filter residue and above-mentioned parts by weight
Sodium is uniformly mixed, and is put into microwave applicator, is heated to 95 DEG C, keeps the temperature 2h, then be filtered, filter residue is put into baking oven, if
Determining temperature is 90 DEG C, and dried object is then put into smelting furnace by dry 3h, and set temperature is 800 DEG C, melting 15min；Finally exist
After above-mentioned melting, melting matter is put into heat extruder, set temperature is 400 DEG C, pressure 52MN, and extruded velocity is
4m/s collects extrudate, obtains corrosion-resistant earthing material base-material, and being soaked in mass fraction is that 0.2% polyacrylamide is molten
In liquid, 9h is stood, is then taken out, places into air-dry machine and air-dries, corrosion-resistant earthing material can be obtained.
13m grounding body is made in corrosion-resistant earthing material prepared by the present invention first, then taking width is 0.8m, depth is
0.7m, length are the ground connection ditch of 15m, and manufactured grounding body is placed in ground connection ditch, is compacted after being backfilled using uniform soil, quiet
After setting 15 days, after tested, corrosion rate 0.0025mm/a, resistivity is 0.8 × 10-5Ω·m。
Example 2
First in mass ratio 1:3, it takes aluminium ash and distilled water to be put into blender, 10min is stirred with 300r/min, then stand
Filtered after 20min, filter residue is carried out it is air-dried, then in mass ratio 2:1, the filter residue after air-drying and sodium metasilicate are uniformly mixed, are put into
In calcining furnace, set temperature is 400 DEG C, calcines 1h, cools to room temperature with the furnace, calcined material is taken out, be put into pulverizer and crush,
It sieves with 100 mesh sieve, collects sieving particle；Again according to parts by weight, taking 50 parts of above-mentioned sieving particles, 16 parts of mass fractions is 10% salt
Acid, 12 parts of distilled water, 3 parts of nickelous carbonates, 2 parts of gypsum rubrums, 1 part of dodecyl sodium sulfate and 0.8 part of copper chloride, first by above-mentioned mistake
It sieves particle, mass fraction to be uniformly mixed for 10% hydrochloric acid and copper chloride, is placed in ultrasonator and vibrates 10min, subsequent mistake
Filter residue is collected in filter；Then by distilled water, nickelous carbonate, gypsum rubrum and the dodecyl sodium sulfonate of above-mentioned filter residue and above-mentioned parts by weight
Sodium is uniformly mixed, and is put into microwave applicator, is heated to 90 DEG C, keeps the temperature 1h, then be filtered, filter residue is put into baking oven, if
Determining temperature is 90 DEG C, and dried object is then put into smelting furnace by dry 2h, and set temperature is 700 DEG C, melting 10min；Finally exist
After above-mentioned melting, melting matter is put into heat extruder, set temperature is 300 DEG C, pressure 43MN, and extruded velocity is
2m/s collects extrudate, obtains corrosion-resistant earthing material base-material, and being soaked in mass fraction is that 0.2% polyacrylamide is molten
In liquid, 7h is stood, is then taken out, places into air-dry machine and air-dries, corrosion-resistant earthing material can be obtained.
11m grounding body is made in corrosion-resistant earthing material prepared by the present invention first, then taking width is 0.5m, depth is
0.5m, length are the ground connection ditch of 13m, and manufactured grounding body is placed in ground connection ditch, is compacted after being backfilled using uniform soil, quiet
After setting 10 days, after tested, corrosion rate 0.0027mm/a, resistivity is 0.9 × 10-5Ω·m。
Example 3
First in mass ratio 1:3, it takes aluminium ash and distilled water to be put into blender, 12min is stirred with 300r/min, then stand
Filtered after 25min, filter residue is carried out it is air-dried, then in mass ratio 2:1, the filter residue after air-drying and sodium metasilicate are uniformly mixed, are put into
In calcining furnace, set temperature is 450 DEG C, calcines 1h, cools to room temperature with the furnace, calcined material is taken out, be put into pulverizer and crush,
It sieves with 100 mesh sieve, collects sieving particle；Again according to parts by weight, taking 55 parts of above-mentioned sieving particles, 17 parts of mass fractions is 10% salt
Acid, 13 parts of distilled water, 4 parts of nickelous carbonates, 3 parts of gypsum rubrums, 2 parts of dodecyl sodium sulfates and 0.7 part of copper chloride, first by above-mentioned mistake
It sieves particle, mass fraction to be uniformly mixed for 10% hydrochloric acid and copper chloride, is placed in ultrasonator and vibrates 12min, subsequent mistake
Filter residue is collected in filter；Then by distilled water, nickelous carbonate, gypsum rubrum and the dodecyl sodium sulfonate of above-mentioned filter residue and above-mentioned parts by weight
Sodium is uniformly mixed, and is put into microwave applicator, is heated to 92 DEG C, keeps the temperature 1h, then be filtered, filter residue is put into baking oven, if
Determining temperature is 90 DEG C, and dried object is then put into smelting furnace by dry 2h, and set temperature is 750 DEG C, melting 12min；Finally exist
After above-mentioned melting, melting matter is put into heat extruder, set temperature is 350 DEG C, pressure 50MN, and extruded velocity is
3m/s collects extrudate, obtains corrosion-resistant earthing material base-material, and being soaked in mass fraction is that 0.2% polyacrylamide is molten
In liquid, 8h is stood, is then taken out, places into air-dry machine and air-dries, corrosion-resistant earthing material can be obtained.
12m grounding body is made in corrosion-resistant earthing material prepared by the present invention first, then taking width is 0.7m, depth is
0.6m, length are the ground connection ditch of 14m, and manufactured grounding body is placed in ground connection ditch, is compacted after being backfilled using uniform soil, quiet
After setting 12 days, after tested, corrosion rate 0.0026mm/a, resistivity is 0.8 × 10-5Ω·m。
Claims (1)
1. a kind of preparation method of corrosion-resistant earthing material, it is characterised in that specifically preparation step is：
（1）In mass ratio 1:3, it takes aluminium ash and distilled water to be put into blender, 10~15min is stirred with 300r/min, then stand
Filtered after 20~30min, filter residue is carried out it is air-dried, then in mass ratio 2:1, the filter residue after air-drying and sodium metasilicate are uniformly mixed,
It is put into calcining furnace, set temperature is 400~500 DEG C, calcines 1~2h, cools to room temperature with the furnace, calcined material is taken out, be put into
It crushes, sieves with 100 mesh sieve in pulverizer, collect sieving particle；
（2）According to parts by weight, taking 50~60 parts of above-mentioned sieving particles, 16~18 parts of mass fractions is 10% hydrochloric acid, 12~15
Part distilled water, 3~6 parts of nickelous carbonates, 2~4 parts of gypsum rubrums, 1~3 part of dodecyl sodium sulfate and 0.8~1.5 part of copper chloride, it is first
It is first that 10% hydrochloric acid and copper chloride are uniformly mixed by above-mentioned sieving particle, mass fraction, is placed in ultrasonator and vibrates 10
~15min is then filtered, and collects filter residue；
（3）By step（2）Distilled water, nickelous carbonate, gypsum rubrum and the dodecyl sodium sulfonate of the filter residue of collection and above-mentioned parts by weight
Sodium is uniformly mixed, and is put into microwave applicator, is heated to 90~95 DEG C, keeps the temperature 1~2h, then be filtered, filter residue is put into baking
In case, set temperature is 90 DEG C, and dried object is then put into smelting furnace by dry 2~3h, and set temperature is 700~800 DEG C,
10~15min of melting；
（4）After above-mentioned melting, melting matter is put into heat extruder, set temperature is 300~400 DEG C, pressure 43
~52MN, extruded velocity are 2~4m/s, collect extrudate, obtain corrosion-resistant earthing material base-material, and be soaked in mass fraction
In 0.2% polyacrylamide solution, to stand 7~9h, then takes out, place into air-dry machine and air-dry, corrosion-resistant connect can be obtained
Ground material.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050638A (en) * | 1989-09-26 | 1991-04-10 | 袁淑惠 | Grounded resistance reducing agent |
| JPH0785904A (en) * | 1993-09-10 | 1995-03-31 | Sankooshiya:Kk | Earth device |
| CN1128786A (en) * | 1995-09-02 | 1996-08-14 | 龚循礼 | Long service life, corrosion-proof, and electric resistance reducing agent for earthing |
| CN1173720A (en) * | 1997-06-11 | 1998-02-18 | 王德言 | Method for prodn. of low resistance earthing module material |
| CN1866409A (en) * | 2006-06-13 | 2006-11-22 | 龚循礼 | Long-lasting grounding anti-corrosion resistance reduction agent (modified type) |
| CN101434813A (en) * | 2008-10-31 | 2009-05-20 | 河北省电力研究院 | Preparation of anti-corrosive conductive coating |
| CN102354821A (en) * | 2011-08-31 | 2012-02-15 | 陕西电力科学研究院 | Preparation method for corrosion-resistant metallic composite grounding body |
-
2016
- 2016-10-07 CN CN201610870524.5A patent/CN106654616B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050638A (en) * | 1989-09-26 | 1991-04-10 | 袁淑惠 | Grounded resistance reducing agent |
| JPH0785904A (en) * | 1993-09-10 | 1995-03-31 | Sankooshiya:Kk | Earth device |
| CN1128786A (en) * | 1995-09-02 | 1996-08-14 | 龚循礼 | Long service life, corrosion-proof, and electric resistance reducing agent for earthing |
| CN1173720A (en) * | 1997-06-11 | 1998-02-18 | 王德言 | Method for prodn. of low resistance earthing module material |
| CN1866409A (en) * | 2006-06-13 | 2006-11-22 | 龚循礼 | Long-lasting grounding anti-corrosion resistance reduction agent (modified type) |
| CN101434813A (en) * | 2008-10-31 | 2009-05-20 | 河北省电力研究院 | Preparation of anti-corrosive conductive coating |
| CN102354821A (en) * | 2011-08-31 | 2012-02-15 | 陕西电力科学研究院 | Preparation method for corrosion-resistant metallic composite grounding body |
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