High-voltage electrical equipment cleaning agent and preparation method thereof

Abstract

The invention relates to the technical field of electric appliance cleaning agents, in particular to a high-voltage electric appliance cleaning agent and a preparation method thereof. The cleaning agent is prepared from the following components in parts by weight: 18-25 parts of tetrachloroethylene, 25-35 parts of dichloromethane, 1-5 parts of fluoroheptane, 15-20 parts of kerosene, 10-15 parts of a surfactant, 20-25 parts of a solvent, 1-3 parts of silicone oil, 1-3 parts of a penetrant and 0.2-0.8 part of an antistatic agent. The electrical equipment cleaning agent is safe and environment-friendly to use, on the premise that the electrical equipment is cleaned, the insulation and voltage resistance performance of the product is improved, the cleaning effect is guaranteed, meanwhile, the safety of construction personnel and the electrical equipment is guaranteed, especially for cleaning of the electrical equipment which cannot be shut down, the highest voltage resistance of the product can reach 10 KV or above, and the electrical equipment cleaning agent is suitable for being used for cleaning electrical equipment which cannot be shut down. And the cleaning requirements of most electrical equipment are met, shutdown is not needed, and the production efficiency of enterprises is improved.

Description

Technical Field

[0001] The invention relates to the technical field of cleaning agents for electrical equipment, and more specifically, to a cleaning agent for high-voltage electrical equipment and a preparation method thereof. Background Art

[0002] During the operation of electrical equipment, dust, oil, moisture, salt, metal dust and other charged particles will be adsorbed on the equipment. If the pollutants are not cleaned in time, the load of electrical equipment will increase, the aging of electrical equipment will be accelerated, the reliability of equipment will be reduced, the service life will be shortened, and even potential safety hazards will be caused.

[0003] Existing live cleaning agents generally include detergents, surfactants, organic solvents, etc., and are chemical cleaning agents. The main principle is to dissolve pollutants through various chemical substances to achieve the purpose of cleaning. The following problems exist: generally, a high-pressure spray gun is used to spray the cleaning agent at high speed onto the surface of the electrical equipment to be cleaned. The cleaning agent stays on the surface of the electrical equipment for a short time and cannot penetrate into the pollutants well, resulting in poor cleaning effect. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention aims to provide a high-voltage electrical equipment cleaning agent.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] A high-voltage electrical equipment cleaning agent comprises, by weight, 18-25 parts of tetrachloroethylene, 25-35 parts of dichloromethane, 1-5 parts of fluoroheptane, 15-20 parts of kerosene, 10-15 parts of surfactant, 20-25 parts of solvent, 1-3 parts of silicone oil, 1-3 parts of penetrant, and 0.2-0.8 parts of antistatic agent.

[0007] Optionally, the surfactant is composed of sodium fatty alcohol polyoxyethylene ether sulfate, sorbitan fatty acid ester, sodium lauryl sulfate, and polyoxyethylene alkylphenol ether.

[0008] Optionally, the fluoroheptane is perfluorosilane.

[0009] Optionally, the solvent consists of rosin water, perfluorocyclic ether, ethanol and propylene glycol.

[0010] Optionally, the penetrant is sodium di-sec-octyl maleate sulfonate.

[0011] Optionally, it also includes: 0.2-1.5 parts of mildew inhibitor.

[0012] Another object of the present invention is to provide a method for preparing a high-voltage electrical equipment cleaning agent, which is achieved by the following technical scheme:

[0013] A method for preparing a high-voltage electrical equipment cleaning agent comprises the following steps:

[0014] S1: Mix vinyl chloride, dichloromethane, fluoroheptane, kerosene, surfactant and solvent evenly, and disperse by ultrasonic for 5-10 minutes;

[0015] S2: Then add silicone oil, penetrant, antistatic agent and mildew inhibitor, and disperse by ultrasonic for 3-5 minutes.

[0016] The present invention has the following beneficial effects:

[0017] (1) The electrical equipment cleaning agent of the present invention is safe and environmentally friendly. Under the premise of meeting the cleaning requirements of electrical equipment, the product has increased the insulation withstand voltage performance, which not only ensures the cleaning effect but also ensures the safety of construction personnel and electrical equipment. In particular, for the cleaning of electrical equipment that cannot be shut down, the maximum withstand voltage of this product can reach more than 10KV, which meets the requirements of most electrical equipment cleaning without shutting down, thereby improving the production efficiency of the enterprise.

[0018] (2) The polyol-type nonionic surfactant used in the present invention has very good wettability and washing ability, can also achieve good emulsification ability and low foaming effect, and is resistant to strong acids and alkalis; combined with fluoroheptane, the pressure resistance and flame retardancy of the cleaning agent are improved.

[0019] (3) The perfluorocyclic ether in the solvent of the present invention can increase the voltage resistance and wettability of the cleaning agent, improve the system compatibility, and achieve good cleaning ability under high voltage conditions.

[0020] (4) The silicone oil used in the present invention has good chemical stability, electrical insulation and weather resistance, a wide viscosity range, a low freezing point, a high flash point, good hydrophobicity, and high shear resistance. It can prevent the "condensation" phenomenon caused by the temperature drop on the surface of equipment components or parts due to the volatilization of the solvent during live cleaning, thereby improving the surface anti-fouling property after cleaning. DETAILED DESCRIPTION

[0021] It is worth noting that the raw materials in the present invention are all common commercially available products, so their sources are not specifically limited.

[0022] Example 1

[0023] A high-voltage electrical equipment cleaning agent comprises, by weight, 18 parts of tetrachloroethylene, 32 parts of dichloromethane, 5 parts of fluoroheptane, 20 parts of kerosene, 15 parts of surfactant, 20 parts of solvent, 2 parts of silicone oil, 2 parts of penetrant, 0.2 parts of antistatic agent and 0.2 parts of mildew preventive.

[0024] The surfactant is prepared by mixing sodium sulfate of fatty alcohol polyoxyethylene ether, sorbitan fatty acid ester, sodium lauryl sulfate and polyoxyethylene alkylphenol ether in a weight ratio of 3:2:2:3.

[0025] The solvent is prepared by mixing rosin water, perfluorocyclic ether, ethanol and propylene glycol in a weight ratio of 18:2:2:3.

[0026] The silicone oil is specifically dimethyl silicone oil, the penetrant is specifically sodium di-sec-octyl maleate sulfonate, the antistatic agent is specifically a quaternary ammonium salt cationic antistatic agent, and the mildew preventer is specifically dithiocyanomethane.

[0027] The preparation method of the above-mentioned high-voltage electrical equipment cleaning agent comprises the following steps:

[0028] S1: Vinyl chloride, dichloromethane, fluoroheptane, kerosene, surfactant and solvent were mixed evenly and ultrasonically dispersed at a frequency of 120 KHz for 10 min;

[0029] S2: Then add silicone oil, penetrant, antistatic agent and mildew inhibitor, and disperse ultrasonically at a frequency of 120KHz for 5 minutes.

[0030] Example 2

[0031] A high-voltage electrical equipment cleaning agent comprises, by weight, 25 parts of tetrachloroethylene, 25 parts of dichloromethane, 2 parts of fluoroheptane, 15 parts of kerosene, 10 parts of surfactant, 25 parts of solvent, 1 part of silicone oil, 1 part of penetrant, 0.2 parts of antistatic agent and 0.2 parts of mildew preventer.

[0032] The surfactant is prepared by mixing sodium sulfate of fatty alcohol polyoxyethylene ether, sorbitan fatty acid ester, sodium lauryl sulfate and polyoxyethylene alkylphenol ether in a weight ratio of 3:2:2:3.

[0033] The solvent is prepared by mixing rosin water, perfluorocyclic ether, ethanol and propylene glycol in a weight ratio of 18:2:2:3.

[0034] The silicone oil is specifically dimethyl silicone oil, the penetrant is specifically sodium di-sec-octyl maleate sulfonate, the antistatic agent is specifically a quaternary ammonium salt cationic antistatic agent, and the mildew preventer is specifically dithiocyanomethane.

[0035] The preparation method of the above-mentioned high-voltage electrical equipment cleaning agent comprises the following steps:

[0036] S1: Vinyl chloride, dichloromethane, fluoroheptane, kerosene, surfactant and solvent were mixed evenly and ultrasonically dispersed at a frequency of 120 KHz for 10 min;

[0037] S2: Then add silicone oil, penetrant, antistatic agent and mildew inhibitor, and disperse ultrasonically at a frequency of 120KHz for 5 minutes.

[0038] Example 3

[0039] A high-voltage electrical equipment cleaning agent comprises, by weight, 20 parts of tetrachloroethylene, 35 parts of dichloromethane, 2 parts of fluoroheptane, 15 parts of kerosene, 10 parts of surfactant, 20 parts of solvent, 3 parts of silicone oil, 3 parts of penetrant, 0.5 parts of antistatic agent and 0.5 parts of mildew preventive.

[0040] The surfactant is prepared by mixing sodium sulfate of fatty alcohol polyoxyethylene ether, sorbitan fatty acid ester, sodium lauryl sulfate and polyoxyethylene alkylphenol ether in a weight ratio of 3:2:2:3.

[0041] The solvent is prepared by mixing rosin water, perfluorocyclic ether, ethanol and propylene glycol in a weight ratio of 18:2:2:3.

[0042] The silicone oil is specifically dimethyl silicone oil, the penetrant is specifically sodium di-sec-octyl maleate sulfonate, the antistatic agent is specifically a quaternary ammonium salt cationic antistatic agent, and the mildew preventer is specifically dithiocyanomethane.

[0043] The preparation method of the above-mentioned high-voltage electrical equipment cleaning agent comprises the following steps:

[0044] S1: Vinyl chloride, dichloromethane, fluoroheptane, kerosene, surfactant and solvent were mixed evenly and ultrasonically dispersed at a frequency of 120 KHz for 10 min;

[0045] S2: Then add silicone oil, penetrant, antistatic agent and mildew inhibitor, and disperse ultrasonically at a frequency of 120KHz for 5 minutes.

[0046] Example 4

[0047] A high-voltage electrical equipment cleaning agent comprises, by weight, 20 parts of tetrachloroethylene, 32 parts of dichloromethane, 4 parts of fluoroheptane, 12 parts of kerosene, 12 parts of surfactant, 20 parts of solvent, 2 parts of silicone oil, 2 parts of penetrant, 0.5 parts of antistatic agent and 0.5 parts of mildew preventive.

[0048] The surfactant is prepared by mixing sodium sulfate of fatty alcohol polyoxyethylene ether, sorbitan fatty acid ester, sodium lauryl sulfate and polyoxyethylene alkylphenol ether in a weight ratio of 3:2:2:3.

[0049] The solvent is prepared by mixing rosin water, perfluorocyclic ether, ethanol and propylene glycol in a weight ratio of 18:2:2:3.

[0050] The silicone oil is specifically dimethyl silicone oil, the penetrant is specifically sodium di-sec-octyl maleate sulfonate, the antistatic agent is specifically a quaternary ammonium salt cationic antistatic agent, and the mildew preventer is specifically dithiocyanomethane.

[0051] The preparation method of the above-mentioned high-voltage electrical equipment cleaning agent comprises the following steps:

[0052] S1: Vinyl chloride, dichloromethane, fluoroheptane, kerosene, surfactant and solvent were mixed evenly and ultrasonically dispersed at a frequency of 120 KHz for 10 min;

[0053] S2: Then add silicone oil, penetrant, antistatic agent and mildew inhibitor, and disperse ultrasonically at a frequency of 120KHz for 5 minutes.

[0054] Comparative Example 1

[0055] Compared with Example 4, an equal amount of solvent was used to replace fluoroheptane (ie, 24 parts of solvent and 0 parts of fluoroheptane), and the remaining components and preparation steps were the same.

[0056] Comparative Example 2

[0057] Compared with Example 4, an equal amount of rosin water is used to replace perfluorocyclic ether (ie, the solvent is prepared by mixing rosin water, perfluorocyclic ether, ethanol and propylene glycol in a weight ratio of 20:2:3), and the other components and preparation steps are the same.

[0058] Performance Testing

[0059] (1) According to the standard of "GB / T 25097 Insulator Live Cleaning Agent", the power frequency breakdown voltage, flash point, and volatile residue insulation performance of the cleaning agents prepared in Examples 1-4 and Comparative Examples 1-2 were tested, and their dielectric strength was tested. The test method was based on "GB / T 507-2002 Insulating Oil Breakdown Voltage". The results are shown in Table 1:

[0060] Table 1: Performance test data

[0061]

[0062] (2) The transformer was spray-washed using the cleaning agents prepared in Examples 1-4 and Comparative Examples 1-2 for 0.5 h. The cleaning rate and salt removal rate were tested according to the standard of GB / T 25097 Insulator Live Cleaning Agent. The results are shown in Table 2:

[0063] Table 2: Spray washing test data

[0064] Group Cleaning rate (%) Salt removal rate (%) Example 1 98.75 98.21 Example 2 98.68 98.17 Example 3 98.62 98.09 Example 4 98.76 98.21 Comparative Example 1 98.35 97.82 Comparative Example 2 98.53 98.11

[0065] It can be seen from the above results that the electrical equipment cleaning agent of the present invention is safe and environmentally friendly to use. Under the premise of meeting the cleaning requirements of electrical equipment, the product has increased the insulation withstand voltage performance, which not only ensures the cleaning effect but also ensures the safety of construction personnel and electrical equipment. In particular, for the cleaning of electrical equipment that cannot be shut down, the maximum withstand voltage of this product can reach more than 10KV, which meets the requirements of most electrical equipment cleaning without shutting down, thereby improving the production efficiency of the enterprise.

[0066] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A high-voltage electrical equipment cleaning agent, characterized in that: Calculated by weight, it includes: 18-25 parts of tetrachloroethylene, 25-35 parts of dichloromethane, 1-5 parts of fluoroheptane, 15-20 parts of kerosene, 10-15 parts of surfactant, 20-25 parts of solvent, 1-3 parts of silicone oil, 1-3 parts of penetrant, and 0.2-0.8 parts of antistatic agent.

2. The high-voltage electrical equipment cleaning agent according to claim 1, characterized in that: The surfactant consists of sodium sulfate of fatty alcohol polyoxyethylene ether, sorbitol fatty acid ester, sodium lauryl sulfate and polyoxyethylene alkylphenol ether.

3. The high-voltage electrical equipment cleaning agent according to claim 2, characterized in that: The fluoroheptane is perfluorosilane.

4. The high-voltage electrical equipment cleaning agent according to claim 1, characterized in that: The solvent consists of rosin water, perfluorocyclic ether, ethanol and propylene glycol.

5. The high-voltage electrical equipment cleaning agent according to claim 1, characterized in that: The penetrant is sodium di-sec-octyl maleate sulfonate.

6. The high-voltage electrical equipment cleaning agent according to claim 5, characterized in that: Also includes: 0.2-1.5 parts of mildew inhibitor.

7. The method for preparing the high-voltage electrical equipment cleaning agent according to claim 6, characterized in that: The following steps are involved: S1: Mix vinyl chloride, dichloromethane, fluoroheptane, kerosene, surfactant and solvent evenly, and disperse by ultrasonic for 5-10 minutes; S2: Then add silicone oil, penetrant, antistatic agent and mildew inhibitor, and disperse by ultrasonic for 3-5 minutes.

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