CN113517082A - Resistance reducing liquid for grounding and preparation method thereof - Google Patents
Resistance reducing liquid for grounding and preparation method thereof Download PDFInfo
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- CN113517082A CN113517082A CN202110381143.1A CN202110381143A CN113517082A CN 113517082 A CN113517082 A CN 113517082A CN 202110381143 A CN202110381143 A CN 202110381143A CN 113517082 A CN113517082 A CN 113517082A
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- 239000007788 liquid Substances 0.000 title claims abstract description 63
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 238000003756 stirring Methods 0.000 claims abstract description 81
- 239000000843 powder Substances 0.000 claims abstract description 38
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000002184 metal Substances 0.000 claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 18
- 239000011707 mineral Substances 0.000 claims abstract description 18
- 150000003839 salts Chemical class 0.000 claims abstract description 18
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 238000001914 filtration Methods 0.000 claims abstract description 12
- 238000005303 weighing Methods 0.000 claims abstract description 11
- 239000003085 diluting agent Substances 0.000 claims abstract description 9
- 239000003381 stabilizer Substances 0.000 claims abstract description 9
- 239000000375 suspending agent Substances 0.000 claims abstract description 9
- 238000007493 shaping process Methods 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 23
- 235000010755 mineral Nutrition 0.000 claims description 17
- 239000004113 Sepiolite Substances 0.000 claims description 15
- 229910052624 sepiolite Inorganic materials 0.000 claims description 15
- 235000019355 sepiolite Nutrition 0.000 claims description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 11
- 235000017550 sodium carbonate Nutrition 0.000 claims description 11
- 229910000278 bentonite Inorganic materials 0.000 claims description 10
- 239000000440 bentonite Substances 0.000 claims description 10
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 10
- 239000002736 nonionic surfactant Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 3
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 3
- 239000003002 pH adjusting agent Substances 0.000 claims description 2
- 238000001139 pH measurement Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 7
- 239000000203 mixture Substances 0.000 claims 1
- 230000035699 permeability Effects 0.000 abstract description 11
- 238000004513 sizing Methods 0.000 abstract description 4
- 230000014759 maintenance of location Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 239000003638 chemical reducing agent Substances 0.000 description 7
- 239000002689 soil Substances 0.000 description 7
- 239000004568 cement Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 239000004020 conductor Substances 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- -1 polyoxyethylene Polymers 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005341 cation exchange Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- YRIUSKIDOIARQF-UHFFFAOYSA-N dodecyl benzenesulfonate Chemical compound CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 YRIUSKIDOIARQF-UHFFFAOYSA-N 0.000 description 1
- 229940071161 dodecylbenzenesulfonate Drugs 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/04—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of carbon-silicon compounds, carbon or silicon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
-
- 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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Abstract
The invention discloses a resistance reducing liquid for grounding and a preparation method thereof, belonging to the technical field of grounding materials, wherein the resistance reducing liquid comprises the following raw materials in parts by weight: 10-20 parts of graphite powder; 0.1-2 parts of multilayer graphene; 1-5 parts of a diluent; 1-5 parts of metal powder; 2-10 parts of a stabilizer; 2-10 parts of a suspending agent; 2-8 parts of mineral salt; 1-10 parts of a pH regulator; 55-70 parts of water. The preparation method comprises the following steps: s1, weighing; s2, mixing; s3, solution sizing: adding suspending agent and stabilizer to carry out solution shaping, stirring for 8-12min, and measuring the pH value of the solution; s4, adjusting the pH value: adding a pH regulator; s5, filtering: and filtering the solution with the pH value adjusted by 200 meshes to obtain the finished product of the resistance reducing liquid. The invention has the advantages of good conductivity, strong permeability and good moisture retention.
Description
Technical Field
The invention relates to the technical field of grounding materials, in particular to a resistance reducing liquid for grounding and a preparation method thereof.
Background
Grounding means that the neutral point of the power system and the electrical device, the exposed conductive portion of the electrical equipment and the external conductive portion of the device are connected to the ground via conductors. The ground can be classified into a working ground, a lightning protection ground and a protection ground, and the lightning protection ground is a ground provided for eliminating the dangerous influence of overvoltage, such as the ground of a lightning rod, a lightning conductor and a lightning arrester. The lightning protection grounding can only flow current under the action of lightning impulse, the amplitude of the lightning current flowing through the lightning protection grounding electrode can reach dozens to hundreds of kiloamperes, but the duration is short. When current flows through the grounding electrode, the potential of the grounding electrode is increased, which affects the safety of human bodies and equipment.
The resistance reducing agent is a grounding material in the lightning protection grounding process, and the existing resistance reducing agent generally comprises various components such as fine graphite, bentonite, a curing agent, a lubricant, conductive cement and the like, and is generally gray black powder. The resistance reducing agent is a good electric conductor, is used between a grounding body and soil, and can be in close contact with a metal grounding body on one hand to form a sufficiently large current flowing surface; on the other hand, the low-resistance grounding body can permeate into the surrounding soil, so that the resistivity of the surrounding soil is reduced, and a low-resistance area with gentle change is formed around the grounding body.
Because the powder drag reducer is inconvenient to use, emulsion drag reducers appear on the market, for example, Chinese patents with application publication numbers of CN109852367A and application publication dates of 2019, 06 and 07 disclose an emulsion drag reducer which is composed of acrylamide, acrylate, dodecyl benzene sulfonate, triethanolamine, an emulsifier, polyoxyethylene alcohol of perfluoroalkyl thioether, an initiator, a pH regulator and water, and the pH of the obtained drag reducer is 5-6. The invention provides a resistance reducing liquid for grounding and a preparation method thereof.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the resistance reducing liquid for grounding and the preparation method thereof, and the resistance reducing liquid has the advantages of good conductivity, strong permeability and good moisture retention.
In order to achieve the purpose, the invention provides the following technical scheme:
the resistance reducing liquid for grounding comprises the following raw materials in parts by weight:
10-20 parts of graphite powder; 0.1-2 parts of multilayer graphene; 1-5 parts of a diluent; 1-5 parts of metal powder; 2-10 parts of a stabilizer; 2-10 parts of a suspending agent; 2-8 parts of mineral salt; 1-10 parts of a pH regulator; 55-70 parts of water.
More preferably: the resistance reducing liquid for grounding is prepared from the following raw materials in parts by weight:
15 parts of graphite powder; 0.5 part of multilayer graphene; 3 parts of a diluent; 1-5 parts of metal powder; 2-10 parts of a stabilizer; 2-10 parts of a suspending agent; 2-8 parts of mineral salt; 1-10 parts of a pH regulator; 55-70 parts of water.
More preferably: the particle sizes of the graphite powder and the metal powder are both below 400 meshes, and the metal powder is one or more of iron powder, silver powder and copper powder.
More preferably: the metal powder is iron powder.
By adopting the structure, the metal powder requires good conductivity, and because the silver powder and the copper powder are expensive, the iron powder is preferred.
More preferably: the pH regulator is one or more of soda ash, baking soda and composite alkali.
More preferably: the pH regulator is sodium carbonate.
By adopting the structure, the alkaline resistance reducing liquid has strong permeability, and can balance the acidity and alkalinity of the liquid in water, generate positive and negative electrolytic ions and increase the conductive capacity of the liquid.
More preferably: the suspending agent is sepiolite powder, and the particle size of the sepiolite powder is 200 meshes.
More preferably: the diluent is PE-100 nonionic surfactant.
More preferably: the stabilizer is nano bentonite.
A preparation method of resistance reducing liquid for grounding comprises the following steps:
s1, weighing
Weighing the raw materials according to the weight parts of the resistance reducing liquid for grounding;
s2, mixing
Adding water into stirring equipment, and adjusting the stirring speed and the stirring temperature of the stirring equipment to ensure that the stirring speed of the stirring equipment is 250-350 r/min and the stirring temperature is 22-28 ℃; adding the diluent into stirring equipment, stirring for 1-5min, adding the multilayer graphene powder, and continuing stirring for 1-5 min; adding graphite powder and metal powder, reducing the stirring speed to ensure that the stirring speed of the stirring equipment is 180-220 r/min, stirring for 3-8min, adding mineral salt, and continuing stirring until the mineral salt is completely dissolved;
s3, shaping the solution
Adding suspending agent and stabilizer to carry out solution shaping, stirring for 8-12min, and measuring the pH value of the solution;
s4 adjustment of pH
Adding a pH regulator according to the measurement result of the pH value so as to ensure that the pH value of the solution is not less than 7;
s5, filtering
And filtering the solution with the adjusted pH value by 200 meshes, and injecting the filtered solution into a special container for storage to obtain the finished product resistance reducing liquid.
More preferably: in step S4, a pH adjusting agent is added to adjust the pH of the solution to 7-8 based on the pH measurement result.
In conclusion, the invention has the following beneficial effects:
1. when the resistance reducing liquid is filled, the iron powder and the graphite powder fill gaps on the ground in the flowing process to form a current channel.
2. The alkali in the resistance reducing liquid is electrolyte, so that the acid-base property of the liquid can be balanced in water, positive and negative electrolytic ions can be generated, and the conductive capability of the liquid is improved.
3. The graphene has the performances of high conductivity, high permeability and the like, can improve the conductivity of the peripheral ground, and increases the discharge speed of lightning current.
4. The diluent may disperse the graphene to avoid agglomeration.
5. The nano bentonite reacts with water to perform cation exchange and increase the consistency of the liquid, so that the conductivity of the resistance reducing liquid is kept in a certain range.
6. The sepiolite can be suspended in water for a long time, and the sepiolite has high water absorbability and can keep moisture for a long time, so that sufficient grounding time is provided.
7. Mineral salt permeates into the ground along with water, so that the conductivity of the ground is improved, and the lightning current discharge capacity of the ground is increased.
Experiments show that in the grounding process, the resistivity of the grounding device is obviously reduced after the resistance reducing liquid is added, so that the conductivity is improved; because the permeability of the resistance reducing liquid on different pavements is different, wherein the permeability is the best of a soil road, the second is a gravel road and the worst is a cement road, the conductivity of the soil road is the strongest when the resistance reducing liquid is used in different sites; the resistivity or resistance of the road surface can be obviously reduced after 1min or 3min of liquid is added no matter the road, the gravel road or the cement road, so that the resistance reducing liquid has excellent permeability and conductivity. Therefore, the raw material components such as graphite powder, multilayer graphene, metal powder and the like are matched and cooperated with one another, and the prepared alkalescent resistance-reducing liquid has the advantages of good conductivity, strong permeability and good moisture retention.
Drawings
FIG. 1 is a block diagram of the process flow in the example, which is mainly used for embodying the preparation method of the resistance-reducing liquid.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
Example 1: a resistance reducing liquid for grounding and a preparation method thereof are disclosed, wherein the resistance reducing liquid for grounding is composed of the following raw materials: 15g of graphite powder; 0.5g of multilayer graphene; 3g of PE-100 nonionic surfactant; 2g of iron powder; 5g of nano bentonite; 5g of sepiolite powder; 4.5g of mineral salt; 2g of soda ash; 62g of water.
Preferably, the granularity of the graphite powder and the metal powder is 400 meshes, and the granularity of the sepiolite powder is 200 meshes.
The preparation method of the resistance reducing liquid for grounding comprises the following steps:
s1, weighing: weighing the raw materials according to the weight of the resistance reducing liquid;
s2, mixing: adding water into stirring equipment, and adjusting the stirring speed and the stirring temperature of the stirring equipment to ensure that the stirring speed of the stirring equipment is 300 revolutions per minute and the stirring temperature is 25 ℃; adding the PE-100 nonionic surfactant into stirring equipment, stirring for 3min, adding the multilayer graphene powder, and continuing stirring for 3 min; adding graphite powder and iron powder, reducing the stirring speed to ensure that the stirring speed of stirring equipment is 200 revolutions per minute, stirring for 5min, adding mineral salt, and continuing stirring until the mineral salt is completely dissolved;
s3, solution sizing: adding sepiolite powder and nano bentonite to carry out solution shaping, stirring for 10min, and measuring the pH value of the solution;
s4, adjusting the pH value: adding soda ash according to the measurement result of the pH value to ensure that the pH value of the solution is 7-8;
s5, filtering: and filtering the solution with the adjusted pH value by 200 meshes, and injecting the filtered solution into a special container for storage to obtain the finished product resistance reducing liquid.
Example 2: the difference between the resistance reducing liquid for grounding and the preparation method thereof and the embodiment 1 is that the resistance reducing liquid for grounding is composed of the following raw materials: 10g of graphite powder; 0.1g of multilayer graphene; 1g of PE-100 nonionic surfactant; 1g of iron powder; 2g of nano bentonite; 2g of sepiolite powder; 2g of mineral salt; 1g of soda ash; 55g of water.
Preferably, the granularity of the graphite powder and the metal powder is 350 meshes, and the granularity of the sepiolite powder is 200 meshes.
The preparation method of the resistance reducing liquid for grounding comprises the following steps:
s1, weighing: weighing the raw materials according to the weight of the resistance reducing liquid;
s2, mixing: adding water into stirring equipment, and adjusting the stirring speed and the stirring temperature of the stirring equipment to ensure that the stirring speed of the stirring equipment is 250 revolutions per minute and the stirring temperature is 22 ℃; adding the PE-100 nonionic surfactant into stirring equipment, stirring for 1min, adding the multilayer graphene powder, and continuing stirring for 1 min; adding graphite powder and iron powder, reducing the stirring speed to ensure that the stirring speed of stirring equipment is 180 revolutions per minute, stirring for 3min, adding mineral salt, and continuing stirring until the mineral salt is completely dissolved;
s3, solution sizing: adding sepiolite powder and nano bentonite, shaping the solution, stirring for 8min, and measuring the pH value of the solution;
s4, adjusting the pH value: adding soda ash according to the measurement result of the pH value to ensure that the pH value of the solution is 7-8;
s5, filtering: and filtering the solution with the adjusted pH value by 200 meshes, and injecting the filtered solution into a special container for storage to obtain the finished product resistance reducing liquid.
Example 3: the difference between the resistance reducing liquid for grounding and the preparation method thereof and the embodiment 1 is that the resistance reducing liquid for grounding is composed of the following raw materials: 20g of graphite powder; 2g of multilayer graphene; 5g of PE-100 nonionic surfactant; 5g of iron powder; 10g of nano bentonite; 10g of sepiolite powder; 8g of mineral salt; 10g of soda ash; 70g of water.
Preferably, the granularity of the graphite powder and the metal powder is 400 meshes, and the granularity of the sepiolite powder is 200 meshes.
The preparation method of the resistance reducing liquid for grounding comprises the following steps:
s1, weighing: weighing the raw materials according to the weight of the resistance reducing liquid;
s2, mixing: adding water into stirring equipment, and adjusting the stirring speed and the stirring temperature of the stirring equipment to ensure that the stirring speed of the stirring equipment is 350 revolutions per minute and the stirring temperature is 28 ℃; adding the PE-100 nonionic surfactant into stirring equipment, stirring for 5min, adding the multilayer graphene powder, and continuing stirring for 5 min; adding graphite powder and iron powder, reducing the stirring speed to ensure that the stirring speed of stirring equipment is 220 revolutions per minute, stirring for 8min, adding mineral salt, and continuing stirring until the mineral salt is completely dissolved;
s3, solution sizing: adding sepiolite powder and nano bentonite to carry out solution shaping, stirring for 12min, and measuring the pH value of the solution;
s4, adjusting the pH value: adding soda ash according to the measurement result of the pH value to ensure that the pH value of the solution is 7-8;
s5, filtering: and filtering the solution with the adjusted pH value by 200 meshes, and injecting the filtered solution into a special container for storage to obtain the finished product resistance reducing liquid.
Example 4: a resistance-reducing liquid for grounding and a method for producing the same are different from those of example 1 in that iron powder is replaced by copper powder.
Example 5: a resistance reducing liquid for grounding and a preparation method thereof are different from the liquid in example 1 in that iron powder is replaced by the following components in a weight ratio of 1: 1 mixing the above components to obtain mixed metal powder.
Example 6: a resistance-reducing liquid for grounding and a preparation method thereof are different from the resistance-reducing liquid in example 1 in that soda ash is replaced by baking soda.
Example 7: the difference between the resistance reducing liquid for grounding and the preparation method thereof and the embodiment 1 is that the composite alkali is replaced by the calcined soda.
Examples of the applications
The finished product resistance reducing liquid prepared in the embodiment 1 is applied to a grounding device in a lightning protection system, then a grounding resistance condition experiment (the outdoor temperature is 32 ℃) is carried out near a yellow river road of Huangxingzhou, Changsha, Hunan, and data are recorded on site, so that tables 1-3 are obtained.
TABLE 1 grounding resistance conditions of different pavements before liquid addition
TABLE 2 grounding resistance of different road surfaces after 1min of liquid addition
TABLE 3 grounding resistance of different road surfaces after 3min of liquid addition
As can be seen from tables 1-3, in the grounding process, the resistivity of the grounding device is obviously reduced after the resistance reducing liquid is added, so that the conductive capability is improved; because the permeability of the resistance reducing liquid on different pavements is different, wherein the permeability is the best of a soil road, the second is a gravel road and the worst is a cement road, the conductivity of the soil road is the strongest when the resistance reducing liquid is used in different sites; as can be seen from tables 2 and 3, the resistivity or resistance of the road surface is significantly reduced after the addition of the solution for 1min or 3min, regardless of the road, the gravel road or the cement road, and thus the resistance-reducing solution prepared in example 1 has excellent permeability and conductivity.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that several improvements and modifications without departing from the principle of the present invention will occur to those skilled in the art, and such improvements and modifications should also be construed as within the scope of the present invention.
Claims (10)
1. A resistance reducing liquid for grounding is characterized in that: the composition comprises the following raw materials in parts by weight:
10-20 parts of graphite powder; 0.1-2 parts of multilayer graphene; 1-5 parts of a diluent; 1-5 parts of metal powder; 2-10 parts of a stabilizer; 2-10 parts of a suspending agent; 2-8 parts of mineral salt; 1-10 parts of a pH regulator; 55-70 parts of water.
2. The resistance-reducing fluid for grounding according to claim 1, wherein: the particle sizes of the graphite powder and the metal powder are both below 400 meshes, and the metal powder is one or more of iron powder, silver powder and copper powder.
3. The resistance-reducing fluid for grounding according to claim 2, wherein: the metal powder is iron powder.
4. The resistance-reducing fluid for grounding according to claim 1, wherein: the pH regulator is one or more of soda ash, baking soda and composite alkali.
5. The resistance-reducing fluid for grounding according to claim 4, wherein: the pH regulator is sodium carbonate.
6. The resistance-reducing fluid for grounding according to claim 1, wherein: the suspending agent is sepiolite powder, and the particle size of the sepiolite powder is 200 meshes.
7. The resistance-reducing fluid for grounding according to claim 1, wherein: the diluent is PE-100 nonionic surfactant.
8. The resistance-reducing fluid for grounding according to claim 1, wherein: the stabilizer is nano bentonite.
9. A preparation method of resistance reducing liquid for grounding is characterized by comprising the following steps: the method comprises the following steps:
s1, weighing
Weighing the raw materials according to the parts by weight of the resistance reducing liquid for grounding in any one of claims 1 to 8;
s2, mixing
Adding water into stirring equipment, and adjusting the stirring speed and the stirring temperature of the stirring equipment to ensure that the stirring speed of the stirring equipment is 250-350 r/min and the stirring temperature is 22-28 ℃; adding the diluent into stirring equipment, stirring for 1-5min, adding the multilayer graphene powder, and continuing stirring for 1-5 min; adding graphite powder and metal powder, reducing the stirring speed to ensure that the stirring speed of the stirring equipment is 180-220 r/min, stirring for 3-8min, adding mineral salt, and continuing stirring until the mineral salt is completely dissolved;
s3, shaping the solution
Adding suspending agent and stabilizer to carry out solution shaping, stirring for 8-12min, and measuring the pH value of the solution;
s4 adjustment of pH
Adding a pH regulator according to the measurement result of the pH value so as to ensure that the pH value of the solution is not less than 7;
s5, filtering
And filtering the solution with the adjusted pH value by 200 meshes, and injecting the filtered solution into a special container for storage to obtain the finished product resistance reducing liquid.
10. The method for preparing the resistance-reducing liquid for grounding as claimed in claim 9, wherein: in step S4, a pH adjusting agent is added to adjust the pH of the solution to 7-8 based on the pH measurement result.
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| CN110818311A (en) * | 2019-11-22 | 2020-02-21 | 东北电力大学 | Sodium bentonite composite resistance reducing agent for high-resistivity soil |
| CN111410949A (en) * | 2020-04-20 | 2020-07-14 | 成都劳恩普斯科技有限公司 | Integrated viscosity-changing, salt-resistant and resistance-reducing agent and preparation method thereof |
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| JPH05156232A (en) * | 1991-12-05 | 1993-06-22 | Shiko:Kk | Grounding resistance-reducing agent |
| CN107767984A (en) * | 2016-08-18 | 2018-03-06 | 北京海德思特科技有限公司 | Ionic earthing array filler |
| CN108409229A (en) * | 2018-03-08 | 2018-08-17 | 中南大学 | A kind of graphene is modified resistance-lowering material and preparation method thereof |
| CN110310758A (en) * | 2019-07-04 | 2019-10-08 | 云南电网有限责任公司丽江供电局 | A kind of graphene ground line and preparation method thereof |
| CN110818311A (en) * | 2019-11-22 | 2020-02-21 | 东北电力大学 | Sodium bentonite composite resistance reducing agent for high-resistivity soil |
| CN111410949A (en) * | 2020-04-20 | 2020-07-14 | 成都劳恩普斯科技有限公司 | Integrated viscosity-changing, salt-resistant and resistance-reducing agent and preparation method thereof |
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Application publication date: 20211019 |