Cleaning agent for dirt on surface of insulator

Abstract

The invention discloses a cleaning agent for dirt on the surface of an insulator. The cleaning agent comprises a surfactant, a chelating dispersant, an anti-deposition agent, a solvent, an auxiliary agent and a PH regulator. Wherein the surface active agent is prepared from straight-chain fatty alcohol-polyoxyethylene ether AEO-9, isomeric fatty alcohol-polyoxyethylene ether and fatty alcohol-polyoxyethylene ether AEO-3; wherein the chelating dispersant is sodium gluconate, ethylene diamine tetraacetic acid disodium salt and sodium polyacrylate; wherein the anti-deposition agent is a fluorine-containing acrylate polymer and polyvinyl alcohol; wherein the solvent and the auxiliary agent are deionized water, fatty alcohol-polyoxyethylene ether JFC and disodium 1-hydroxyethylidene-1, 1-diphosphonate; wherein the pH regulator is citric acid; the cleaning agent has the advantages of strong decontamination capability, environmental friendliness, good equipment protection effect and good long-term protection effect, and is particularly suitable for cleaning dirt on the surfaces of insulators mainly comprising chemical dust, fire coal fly ash, dust, sand wind, pollen, bird excrement and the like in industrial cities and surrounding areas, inland arid areas and farmland areas.

Description

Technical Field

[0001] This invention belongs to the technical field of insulator cleaning agents, specifically relating to a cleaning agent for cleaning dirt on the surface of insulators. Background Technology

[0002] Insulators are exposed to sulfur dioxide (SO2) and nitrogen oxides (NOx) for extended periods. X In environments polluted by particulate matter and dust, these substances gradually deposit on the surface of insulators through natural forces such as wind and gravity, forming a contamination layer. This contamination layer absorbs water in humid environments, forming a conductive layer that significantly reduces the flashover voltage of the insulator. When the air humidity reaches the dew point or in foggy weather, the conductivity of the contamination layer increases dramatically, potentially causing flashover under power frequency or switching impulse voltages, leading to power outages or even safety accidents. Therefore, insulators need to be cleaned regularly or irregularly to ensure the safe and stable operation of the power system.

[0003] Considering the regional characteristics of insulator use, the contamination layer of insulators located in and around industrial cities, in arid inland areas, and farmland primarily consists of chemical dust, coal fly ash, dust, sandstorms, pollen, and bird droppings. Currently, commercially available insulator surface cleaning agents suffer from poor cleaning effectiveness and inadequate long-term protective properties, necessitating frequent cleaning for insulators with these regional characteristics. Therefore, developing a new insulator surface cleaning agent is essential to address these issues. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an insulator surface cleaning agent with strong decontamination ability, environmental friendliness, good equipment protection effect, and good long-term protection effect. It is especially suitable for cleaning insulator surface dirt, mainly chemical dust, coal fly ash, dust, sand, pollen, bird droppings, etc., located in and around industrial cities, inland arid areas, and farmland.

[0005] The objective of this invention is achieved as follows: an insulator surface cleaning agent, comprising surfactant, chelating dispersant, anti-deposition agent, solvent and additives, and pH adjuster;

[0006] Among them, the surfactants are linear fatty alcohol polyoxyethylene ether AEO-9, isomeric fatty alcohol polyoxyethylene ether, and fatty alcohol polyoxyethylene ether AEO-3.

[0007] The chelating dispersants are sodium gluconate, disodium ethylenediaminetetraacetate, and sodium polyacrylate.

[0008] Among them, the anti-deposition agents are fluorinated acrylate polymers and polyvinyl alcohol;

[0009] The solvent and additives are deionized water, fatty alcohol polyoxyethylene ether JFC, and disodium hydroxyethylidene diphosphonate.

[0010] The pH adjuster is citric acid.

[0011] Preferably, the fluorinated acrylate polymer has a short carbon chain and C≤6.

[0012] Preferably, the degree of alcoholysis of the polyvinyl alcohol is 75-88%.

[0013] Preferably, the mass percentage of the linear fatty alcohol polyoxyethylene ether AEO-9 is 10-15%, the mass percentage of the isomeric fatty alcohol polyoxyethylene ether is 2-8%, the mass percentage of the fatty alcohol polyoxyethylene ether AEO-3 is 0.2-1.0%, the mass percentage of the sodium gluconate is 0.5-10%, the mass percentage of the disodium ethylenediaminetetraacetate is 0.5-10%, the mass percentage of the sodium polyacrylate is 0.1-1.0%, the mass percentage of the fluorinated acrylate polymer is 1-3%, the mass percentage of the polyvinyl alcohol is 1-5%, the mass percentage of the fatty alcohol polyoxyethylene ether JFC is 0.2-1.0%, the mass percentage of the disodium hydroxyethylidene diphosphonate is 0.5-1.0%, and the balance is deionized water, to a total of 100%.

[0014] Preferably, the amount of citric acid added is appropriate, used to adjust the cleaning agent to neutral or weakly alkaline.

[0015] Preferably, the pH of the cleaning agent is adjusted to 7-9.

[0016] Due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0017] (1) This invention uses a scientific compounding of surfactants and chelating dispersants to deal with insulator contamination in areas with regional characteristics such as industrial cities and surrounding areas, arid inland areas, and farmland areas, and has a strong decontamination ability.

[0018] (2) The core components of this invention are easily biodegradable, and short-chain fluoropolymers are selected. A water-based formula is used to reduce VOCs, which is environmentally friendly.

[0019] (3) The present invention uses a neutral or weakly alkaline formula and adds a corrosion inhibitor (disodium hydroxyethylidene diphosphonate) to protect the insulators and metal parts, resulting in good equipment protection effect;

[0020] (4) The present invention uses a unique anti-deposition agent to form a protective film on the surface of the insulator after cleaning, which delays the accumulation of dirt, reduces the cleaning frequency, and provides good long-term protection.

[0021] In summary, this invention has the advantages of strong decontamination ability, environmental friendliness, good equipment protection effect, and good long-term protection effect. Attached Figure Description

[0022] Figure 1 This is a schematic diagram illustrating the synergistic effect of the components in the cleaning agent formulation of this invention.

[0023] Figure 2 This is a schematic diagram of the cleaning process of the cleaning agent of the present invention. Detailed Implementation

[0024] The technical solution of the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0025] This invention provides a cleaning agent for insulator surface contaminants, comprising surfactants, chelating dispersants, anti-deposition agents, solvents and additives, and pH adjusters.

[0026] Among them, the surfactants are linear fatty alcohol polyoxyethylene ethers (such as AEO-9, used for wetting, penetrating, emulsifying oil and dust), isomeric fatty alcohol polyoxyethylene ethers (used for enhancing wetting and rapid defoaming), and fatty alcohol polyoxyethylene ethers (such as AEO-3, used for strong penetration and dispersing dirt).

[0027] The chelating dispersants are sodium gluconate (used to complex metal ions such as calcium and magnesium and decompose insoluble scale), disodium ethylenediaminetetraacetate (i.e., EDTA-disodium, used to strongly chelate metal ions), and sodium polyacrylate (used to disperse insoluble particles and prevent redeposition).

[0028] Among them, the anti-deposition agent is a fluorinated acrylate polymer (short carbon chain, C≤6, used to form a protective film on the surface of the insulator, giving the insulator waterproof and oil-proof properties and delaying the accumulation of dirt) and polyvinyl alcohol (i.e. PVA, with a degree of alcoholysis of 75-88%, used to assist in film formation and enhance the adhesion of the anti-deposition agent).

[0029] The solvents and additives include deionized water (an environmentally friendly solvent used to ensure the high resistivity of the cleaning agent), fatty alcohol polyoxyethylene ether (such as JFC, used to enhance penetration), and disodium hydroxyethylidene diphosphonate (i.e., HEDP-disodium, used for scale inhibition and corrosion inhibition).

[0030] The pH adjuster is citric acid (used to adjust the cleaning agent to neutral or weakly alkaline, enhancing its applicability and environmental friendliness).

[0031] The cleaning agent of this invention has the following specific formulation: 10-15% by mass of linear fatty alcohol polyoxyethylene ether AEO-9, 2-8% by mass of isomeric fatty alcohol polyoxyethylene ether, 0.2-1.0% by mass of fatty alcohol polyoxyethylene ether AEO-3, 0.5-10% by mass of sodium gluconate, 0.5-10% by mass of disodium ethylenediaminetetraacetate, 0.1-1.0% by mass of sodium polyacrylate, 1-3% by mass of fluorinated acrylate polymer, 1-5% by mass of polyvinyl alcohol, 0.2-1.0% by mass of fatty alcohol polyoxyethylene ether JFC, 0.5-1.0% by mass of disodium hydroxyethylidene diphosphonate, with the balance being deionized water to make up to 100%; an appropriate amount of citric acid is added to adjust the pH of the cleaning agent to 7-9.

[0032] like Figure 1 As shown, the components of the formula provided by this invention work synergistically to achieve a complete and efficient dynamic cleaning process from penetration to stripping, then to dispersion and finally to the formation of protection, resulting in a comprehensive cleaning effect of "1+1>2".

[0033] Step 1, Synergistic Penetration and Wetting: Used to break down fouling structures.

[0034] When the cleaning agent is sprayed onto the surface of the insulator, the various surfactants in the formula (such as AEO-9 and AEO-3) and the pH adjuster (citric acid) work together immediately. The surfactants significantly reduce the surface tension of the cleaning agent, allowing it to spread rapidly on the uneven surface of the dirt layer and wet every crevice. At the same time, the weakly acidic citric acid environment can slightly neutralize and loosen the alkaline components (such as cement) commonly found in industrial dirt and promote subsequent reactions. Together, they instantly open up and penetrate deep into the interior of the dense dirt layer, laying the foundation for subsequent actions.

[0035] Step 2, Co-decomposition and Complexation: The framework used to destroy the dirt.

[0036] The penetrating cleaning agent begins to attack the core of the dirt, the binders of insoluble particles (metal ions) and soluble salts, and chelating dispersants (such as sodium gluconate, EDTA-disodium) precisely capture and encapsulate metal ions such as calcium and magnesium, causing them to lose their ability to bind dust particles. At the same time, these components work together with HEDP-disodium to effectively integrate hard ions in the water and salts in the dirt, preventing the re-formation of insoluble precipitates. Together, they chemically decompose the originally solid dirt layer, which was originally bound together by metal ions and salts, into loose, independent microparticles.

[0037] Step 3, Co-emulsification and Dispersion: Used to suspend and remove contaminants.

[0038] As the fouling structure is broken down, surfactants and dispersants begin to package and transport these decomposed particles. The surfactants emulsify organic oily dirt such as bird droppings and pollen into tiny droplets and pry them off the insulator surface. At the same time, the dispersant (such as sodium polyacrylate) uses electrostatic pressure to make these particles repel each other and remain stably suspended in the cleaning solution, preventing them from redepositing onto the already clean insulator surface. Together, these two processes effectively remove all types of dirt (hydrophilic, hydrophobic, inorganic, and organic) from the substrate and disperse them evenly in the cleaning solution. They can then be completely removed with a simple rinse of water, achieving residue-free cleaning.

[0039] Step 4, Synergistic Anti-deposition and Protection: To prepare for the future by providing a protective suit.

[0040] After the dirt is removed, the special components in the cleaning agent form an invisible protective film on the clean insulator surface. The fluorinated acrylate polymer works synergistically with PVA to cross-link on the insulator surface to form a dense, smooth, hydrophobic, and oil-repellent molecular film. This film greatly reduces the surface free energy, making it difficult for subsequent contaminants (dust, salt, bird droppings, etc.) to adhere, and even if they do adhere, they do not bond firmly. This achieves deep cleaning and gives the insulator long-term anti-fouling and easy-to-clean properties, effectively extending the safe operation cycle and reducing the frequency of cleaning.

[0041] The cleaning agent of the present invention achieves a comprehensive cleaning purpose, from immediate cleaning to long-term protection, through the precise combination of the various components in the formula and the synergistic effect described above.

[0042] In practical use, the cleaning agent of this invention, because its formula is a high-concentration stock solution, needs to be diluted with deionized water or purified water according to the severity of the dirt. Specifically: light dirt: dilute at a ratio of 1:10 to 1:15 (stock solution: water); moderate to heavy dirt: dilute at a ratio of 1:5 to 1:8; particularly stubborn dirt (such as thick cement or chemical crust): use a higher concentration of 1:3, or use directly without dilution, but require more thorough rinsing. Mixing: stir thoroughly after dilution to ensure uniformity.

[0043] like Figure 2 As shown, the insulators are cleaned using the cleaning agent of the present invention, and the steps are as follows:

[0044] First, pretreatment and mechanical assistance: use a soft brush to perform a light dry brushing pretreatment to break up the crust layer and facilitate the penetration of the cleaning agent.

[0045] Then, perform layered and zoned cleaning: following the principle of bottom-up and from edge to center.

[0046] Step 1, low-pressure spray wetting: Use clean water or a very diluted cleaning agent to pre-wet the surface of the insulator in a low-pressure fan-shaped water mist manner to prevent dust from flying and to initially soften the dirt layer.

[0047] Step 2, spray cleaning agent: Spray the diluted cleaning agent evenly onto the surface of the insulator, ensuring that the upper and lower surfaces of the skirt and the grooves are covered, allowing the cleaning agent to fully penetrate;

[0048] Step 3, Residual reaction: After spraying, be sure to let the cleaning agent remain on the dirty surface for 5 to 10 minutes (adjust the time according to the degree of dirt) until you see the dirt gradually being broken down, emulsified, and starting to flow; for particularly stubborn dirt, you can spray a second time or use a soft brush (ensure insulation is safe) for extremely gentle auxiliary brushing to help remove it.

[0049] Step 4, high-pressure water rinsing: After the reaction is over, immediately use high-pressure fan-shaped water mist to thoroughly rinse the insulator. First rinse the bottom skirt, then gradually move upwards to avoid the dirty water from the upper layer forming a new sewage film on the lower skirt, causing secondary pollution or excessive local conductivity. Rinse until the water droplets are clear and transparent, without any foam or dirt residue.

[0050] Step 5, Post-cleaning treatment: After rinsing, carefully inspect the insulators from multiple angles to ensure no dirt residue remains, especially in the root grooves of the skirts. Wastewater should be recycled and treated using tools such as anti-fouling blankets and drainage ditches to collect all wastewater generated during the cleaning process and transport it to a wastewater treatment plant for compliant treatment. It is strictly forbidden to allow it to flow into the soil or drainage system.

[0051] By following the steps above, not only can dirt on the surface of the insulator be removed efficiently, but the protective film formed can also extend the cleaning cycle of the insulator, achieving a win-win situation for both safety and economy.

[0052] In summary, this invention provides an environmentally friendly multi-effect insulator cleaning agent formula, which aims to effectively decompose various types of dirt while minimizing the burden on the environment.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A cleaning agent for cleaning dirt from the surface of insulators, characterized in that: This includes surfactants, chelating dispersants, anti-deposition agents, solvents and auxiliaries, and pH adjusters; Among them, the surfactants are linear fatty alcohol polyoxyethylene ether AEO-9, isomeric fatty alcohol polyoxyethylene ether, and fatty alcohol polyoxyethylene ether AEO-3. The chelating dispersants are sodium gluconate, disodium ethylenediaminetetraacetate, and sodium polyacrylate. Among them, the anti-deposition agents are fluorinated acrylate polymers and polyvinyl alcohol; The solvent and additives are deionized water, fatty alcohol polyoxyethylene ether JFC, and disodium hydroxyethylidene diphosphonate. The pH adjuster is citric acid.

2. The insulator surface cleaning agent according to claim 1, characterized in that: The fluorinated acrylate polymer has a short carbon chain with C≤6.

3. The insulator surface cleaning agent according to claim 1, characterized in that: The degree of alcoholysis of the polyvinyl alcohol is 75-88%.

4. The insulator surface cleaning agent according to claim 1, 2, or 3, characterized in that: The mass percentage of the linear fatty alcohol polyoxyethylene ether AEO-9 is 10-15%, the mass percentage of the isomeric fatty alcohol polyoxyethylene ether is 2-8%, the mass percentage of the fatty alcohol polyoxyethylene ether AEO-3 is 0.2-1.0%, the mass percentage of sodium gluconate is 0.5-10%, the mass percentage of disodium ethylenediaminetetraacetate is 0.5-10%, the mass percentage of sodium polyacrylate is 0.1-1.0%, the mass percentage of the fluorinated acrylate polymer is 1-3%, the mass percentage of polyvinyl alcohol is 1-5%, the mass percentage of fatty alcohol polyoxyethylene ether JFC is 0.2-1.0%, the mass percentage of disodium hydroxyethylidene diphosphonate is 0.5-1.0%, and the balance is deionized water, to a total of 100%.

5. The insulator surface cleaning agent according to claim 4, characterized in that: The amount of citric acid added is appropriate, used to adjust the cleaning agent to neutral or weakly alkaline.

6. The insulator surface cleaning agent according to claim 5, characterized in that: Adjust the pH of the cleaning agent to 7-9.

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