KR101610119B1 - Cleaning method for electric or communication recieving facilities using insulating detergent composition - Google Patents

Abstract

The present invention relates to a method for cleaning electrical or communication storage equipment by using an insulating detergent composition and, more specifically to a cleaning method for removing foreign substances by spraying the same to the electrical or communication storage equipment in the conducting state. The insulating detergent composition comprises: a) 100 to 200 parts by weight of 1,1-dichloroethene; b) 250 to 350 parts by weight of ISOPAR G (EXXON COMPANY); c) 50 to 100 parts by weight of pentafluoroethane; and d) 100 to 200 parts by weight of 1,1,1-2-tetrafluoroethane.

Description

TECHNICAL FIELD [0001] The present invention relates to a cleaning method for an electric or communication receiving facility using an insulating detergent composition,

The present invention relates to a method of cleaning an electrical or communication receiving facility using an insulating detergent composition having excellent cleaning power.

Ground transformer, ground switch, power receiving equipment, and substation equipment are electric power supply devices for smooth supply of electricity to various industrial sites. These substation facilities are often overloaded due to a sudden increase in the amount of power during the hot summer and overheating due to the overload. Especially, various pollutants such as dust caused by long-term use are adhered to the inside of the substation facility, which may cause a failure of the electric equipment, deterioration of the insulation effect and overheating of the substation equipment or fire. In case of communication equipment, It requires periodic safety management.

Therefore, in order to solve the problems that may occur in the electric or communication supply device and to prevent accidents in advance, the Korea Electrical Safety Corporation periodically conducts electrical safety inspections of electric or communication receiving facilities. However, in order to remove the dust or dirt which is trapped in or attached to narrow gaps such as connecting terminals or breakers of electric or communication equipments by the above-mentioned method, . Especially, in order to prevent safety accidents, it is necessary to shut off the washing machine. Therefore, shutdown of the plant due to power loss will lead to huge economic loss.

In order to solve the above-mentioned problems, prior art solvents are known. Although the fron-based solvent has excellent properties as a detergent, its use is totally restricted because it can destroy the ozone layer in the atmosphere and adversely affect the ecosystem.

As the detergent which can replace the fron-based solvent, an organic solvent detergent and an aqueous detergent including alcohols such as ethyl alcohol or isopropyl alcohol and hydrocarbons such as limonene or liquid paraffin are used. Patent No. 352,267 discloses a detergent composition containing an aliphatic hydrocarbon and an aliphatic alcohol as a main component.

The detergent composition is mainly composed of a hydrocarbon-based organic solvent and a solvent such as an alcohol. Therefore, the detergent composition is volatile and harmful to the human body, and has a low flash point, thus requiring an antistatic agent or explosion-proof equipment.

In addition, the aqueous cleaning solution for removing impurities, which contains an ammonium fluoride compound, a potassium hydroxide compound and water, disclosed in Korean Patent No. 1,416,103, is more harmless to the human body than the organic solvent detergent and has an advantage in safety at the time of work, There is a problem in that a process for uniformly and quickly drying the water remaining on the surface of water is further required and it can not be used in a device in a conductive state.

Korea Patent No. 352,267 Korean Patent No. 1,416,103

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a method of cleaning an electric or communication receiving facility using an insulating detergent composition that can be cleaned in an energized state.

Another object of the present invention is to provide a cleaning method which is excellent in cleaning even when the cleaning agent does not remain in the electric or communication receiving facility.

In order to accomplish the above object, the present invention provides a cleaning method for an electric or communication equipment using an insulation detergent composition, comprising: a) 100 to 200 parts by weight of 1,1-dichloroethane; b) 250 to 350 parts by weight of ISOPAR G; c) 50 to 100 parts by weight of pentafluoroethane; And d) 100 to 200 parts by weight of 1,1,1,2-tetrafluoroethane, wherein the insulating detergent composition is sprayed onto an electric or telecommunication receiving facility Thereby removing foreign matter.

Further, the cleaning method of the present invention is characterized in that the injection of the insulating detergent composition is performed in a state where the electric or communication accommodation facility is energized.

In addition, the cleaning method of the present invention is characterized in that the detergent composition is sprayed onto electricity or communication receiving facilities after the safety check step of determining whether there is an abnormality in the electric or communication receiving facility to remove foreign matter.

The cleaning method of the present invention is characterized in that the safety inspection object in the safety inspection step includes a power cable, a load switch, a lightning arrester, a power fuse, a transformer for a meter, a transformer for a meter, a digital integrating power meter, , Transformer, Vacuum Circuit Breaker Operation Power Supply Circuit, Transformer, Switchboard, Measuring Instrument, Leakage Detector, Busbar Connection, Emergency Power Supply, Storage Battery, Automatic Switchgear, Air Breaker, MCCB Panel, Video Current Transformer, High Pressure Exhaust Fan Wherein the safety check item is at least one of a connection state, a ground state, a connection state, a discoloration state, a heat generation state, a noise state, a vibration state, and a screw tightening state of the safety inspection object .

Further, the cleaning method of the present invention is characterized in that the safety inspection is performed by any one or more of visual inspection, thermal imaging camera or measuring instrument.

Further, the cleaning method of the present invention is characterized in that the injection is first sprayed to the lower part of the electric or communication receiving facility and then sprayed to the upper part.

The cleaning method of the present invention may further comprise: a) 100 parts by weight of 1,1-dichloroethane; b) 300 parts by weight of ISOPAR G; c) 70 parts by weight of pentafluoroethane; And d) 100 parts by weight of 1,1,1,2-tetrafluoroethane.

Also, the cleaning method of the present invention is characterized in that the insulating detergent composition further comprises 5 to 10 parts by weight of n-butane and 1 to 5 parts by weight of n-pentane.

The cleaning method according to the present invention uses an insulating detergent composition having a high flash point and an insulation breakdown voltage, so that it is advantageous that the electric or communication receiving facility can be cleaned even in the energized state.

In addition, the insulation detergent composition used in the cleaning method according to the present invention is harmless to the human body due to no odor during use, and thus has an advantage of high safety in washing operation.

In addition, the insulating detergent composition used in the cleaning method according to the present invention does not require any additional drying process because it does not contain water, and has a high vapor pressure. Therefore, the cleaning agent residue remaining on the surface or inside of the electric or communication- Is evaporated quickly, there is an advantage that performance deterioration of the facility can be minimized.

Hereinafter, preferred embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention. The embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a detergent composition used for cleaning electric or telecommunication facilities of the present invention will be described in detail.

The insulating detergent composition having excellent cleaning power of the present invention is the invention disclosed in the Japanese Patent Application No. 10-2015-0041327, which was filed by the present inventor, wherein a) 1,1-dichloroethene; b) ISOPAR G (EXXON COMPANY); c) pentafluoroethane; And d) 1,1,1,2-tetrafluoroethane.

More specifically, the insulating detergent composition of the present invention comprises: a) from 100 to 200 parts by weight of 1,1-dichloroethane; b) 250 to 350 parts by weight of ISOPAR G (EXXON COMPANY); c) 50 to 100 parts by weight of pentafluoroethane; And d) 100 to 200 parts by weight of 1,1,1,2-tetrafluoroethane.

The a) 1,1-dichloroethene contained in the insulating detergent composition according to the present invention is a non-destructive substance of the ozone layer and is excellent in oil solubility, and is a substance capable of washing oil adhered to electric or communication reception facilities.

At this time, when the a) 1,1-dichloroethene is mixed in the insulating detergent composition according to the present invention at less than 100 parts by weight, the cleaning ability of the oil may be insufficient. When the amount exceeds 200 parts by weight, This may cause a fire.

B) ISOPAR G (EXXON COMPANY), which is a mixture of 100 to 200 parts by weight of a) 1,1-dichloroethane, is a substance containing isopropyl alcohol (IPA) as a main component and is harmless to the human body and has no odor I have.

Generally, isopropyl alcohol is a flammable substance, but explosion-proof equipment is required when used alone. However, ISOPAR G (EXXON COMPANY) contained in the insulating detergent composition of the present invention has a high flash point, There is no.

Also, b) ISOPAR G (EXXON COMPANY) contained in the insulating detergent composition according to the present invention has excellent ability to penetrate into fine parts of various items to be cleaned, which are provided in electric or telecommunication receiving facilities, and thus has excellent cleaning ability.

At this time, if b) ISOPAR G (manufactured by EXXON COMPANY) is mixed with less than 250 parts by weight of the insulating detergent composition according to the present invention, the dielectric breakdown voltage and the flash point may be lowered, If they are mixed in an amount exceeding 350 parts by weight, the flash point may be lowered and fire may occur.

On the other hand, 50 to 100 parts by weight of c) pentafluoroethane is mixed into the above mixed a) 1,1-dichloroethane and b) ISOPAR G (EXXON COMPANY).

The c) pentafluoroethane is a colorless, odorless, and highly volatile compound. The insulating detergent composition of the present invention containing c) pentafluoroethane is allowed to evaporate rapidly after washing, and the detergent remains on the surface of the to- Do not.

When the c) pentafluoroethane is mixed with the insulating detergent composition according to the present invention at a ratio of less than 50 parts by weight, the vapor pressure of the cleaning agent may be lowered, and the cleaning agent may remain on the surface of the object to be washed. The insulating property is lowered and the dielectric breakdown voltage may be lowered.

On the other hand, d) 1,1,1,2-tetrafluoroethane added to the mixed solution of a) 1,1-dichloroethane, b) ISOPAR G (EXXON COMPANY) and c) pentafluoroethane, Compounds with a global warming index of 0.29 and an ozone depletion potential of 0 are harmless to the environment.

In particular, the d) 1,1,1,2-tetrafluoroethane is highly volatile, allowing the insulation detergent composition according to the present invention to evaporate in a short time.

Therefore, after the cleaning agent is used in the electric or communication receiving facility, the cleaning agent is not left on the surface, and the performance of the device can be maintained.

When the d) 1,1,1,2-tetrafluoroethane is mixed with the insulating detergent composition according to the present invention in an amount of less than 100 parts by weight, the vapor pressure is lowered and the detergent remains in the object to be washed, If the amount exceeds 200 parts by weight, the dielectric breakdown voltage and the flash point may be lowered.

The insulating detergent composition according to the present invention comprises: a) 100 parts by weight of 1,1-dichloroethane; b) 300 parts by weight of ISOPAR G (EXXON COMPANY); c) 70 parts by weight of pentafluoroethane; And d) 100 parts by weight of 1,1,1,2-tetrafluoroethane.

The composition thus mixed has an increased breakdown voltage and a higher flash point, and is not only detergent-resistant but also harmless to the human body.

At this time, the insulating detergent composition according to the present invention may further contain 5 to 10 parts by weight of n-butane and 1 to 5 parts by weight of n-pentane.

The n-butane is a substance having a flash point of -60 캜 and an ignition point of 430 캜. The n-pentane is a substance having a flash point of -40 캜 or lower and an ignition point of 309 캜. When n-pentane is mixed in the above-mentioned weight parts, the flash point of the entire composition can be lowered and the ignition point can be increased.

Also, by mixing n-butane and n-pentane in the insulating detergent composition according to the present invention, it is possible to lower the boiling point of the entire composition and increase the vapor pressure.

Accordingly, the insulating detergent composition according to the present invention can be dried in a short time after cleaning electric or communication receiving facilities.

When the n-butane is mixed with the insulating detergent composition according to the present invention at a concentration of less than 5 parts by weight, the vapor pressure may be reduced and the drying time may be prolonged. When the n-butane is mixed in an amount exceeding 10 parts by weight, Can be degraded.

When the n-pentane is mixed in an amount of less than 1 part by weight with respect to the insulating detergent composition according to the present invention, the vapor pressure may decrease and the drying time may be prolonged. When the n-pentane is mixed in an amount exceeding 5 parts by weight, Can be lowered.

Thus, the insulating detergent composition prepared by further mixing the n-butane and n-pentane has improved evaporation speed, so that the detergent does not remain on the surface of the object to be cleaned during washing.

In addition, the insulating detergent composition of the present invention may further include a stabilizer in addition to the hydrocarbon composition, and may be further used as long as it is a compound suitable for stabilizing the composition.

For example, an epoxide selected from the group consisting of a stable diene compound, a phenolic compound, an aromatic epoxide, an alkyl epoxide, an alkenyl epoxide, and mixtures thereof, and may be used in an amount of 0.05 to 1 wt. Additional additives may be added.

Next, a method for cleaning electrical or communication equipment using the above-described insulating detergent composition will be described in detail.

There is no particular limitation on the method of washing electrical or communication equipment using the detergent composition containing the insulating detergent composition according to the present invention. The method of spraying the electrical or communication equipment is not limited to the spraying method, immersion cleaning method, oscillating cleaning method, ultrasonic cleaning method, puddle cleaning method, brush cleaning method, And is preferably a spraying method.

The spraying method involves applying pressure to the insulating detergent composition and spraying the pressurized insulating detergent composition through a nozzle, with the cleaning effect of the components contained in the insulating detergent composition when sprayed, The cleaning effect can be expected together, and it is possible not only to clean the minute gaps but also to shorten the cleaning time. It is obvious to a person skilled in the art that the pressure at the time of injection is not particularly limited, and that a proper pressure can be selected in consideration of the kind of the object to be cleaned and the damage of the device.

The apparatus used in the spraying method is not particularly limited as long as it is provided with a nozzle capable of pressurizing the insulating detergent composition and spraying the pressurized composition.

In the cleaning of the receiving equipment according to the present invention, it is preferable to first spray the insulating detergent composition on the lower part of the electric or communication receiving equipment, and then wash the upper part gradually. When the insulating detergent composition is sprayed in order from the upper part to the lower part, the foreign matter removed by the spraying flows down to the lower part or may be shot in the gap of the lower receiving equipment, desirable.

In addition, after the cleaning of the receiving equipment according to the present invention, a foreign matter cleaning step may be further included for collecting the foreign matter removed from the object to be washed.

On the other hand, before the electric or communication receiving facility is cleaned, a safety check step for judging the abnormality of the to-be-washed can be further performed. There is no particular limitation on the items to be inspected, the object or the order of the electric power, but the electric power or the electric power cable provided in the electric or communication receptacle, the load switch, the lightning arrester, the power fuse, the transformer for the meter, the transformer for the meter, , Vacuum circuit breaker, Instrument transformer, Vacuum circuit breaker Operation power supply circuit, Transformer, Switchboard, Measuring instrument, Leakage detector, Busbar connection, Emergency power supply, Storage battery, Automatic switchgear, Air circuit breaker, MCCB panel, Pressure discharge fan and industrial current transformer may be subject to a safety check and the safety check items such as the connection state, ground state, connection state, discoloration state, heat generation state, noise state, vibration state, Lt; / RTI > It is also clear that the above-described safety check step can be further performed after washing.

In addition, although the above safety inspection can be performed visually, it is also possible to inspect facilities which are difficult to visually recognize or which require precise inspection by using a thermal imaging camera or an instrument

Hereinafter, preferred embodiments of the present invention will be described in order to facilitate understanding of the present invention. However, the following examples are provided only for the purpose of easier understanding of the present invention, and the present invention is not limited thereto.

Example  1. Preparation of insulating detergent

100 parts by weight of 1,1-dichloroethane and 350 parts by weight of ISOPAR G (exxon company) were added to a mixer, and the mixture was stirred for 5 minutes at 25 DEG C at 1,000 rpm. Then, 100 parts by weight of pentafluoroethane was added to a mixer After stirring for 5 minutes at the same temperature and speed, 100 parts by weight of 1,1,1,2-tetrafluoroethane was added to the mixer and mixed at the same temperature and speed for 5 minutes to prepare an insulating detergent.

Example  2 to 6 and Comparative Example  1 to 6

An insulating detergent containing the composition shown in Table 1 below was prepared in the same manner as in Example 1.

division
(Parts by weight) 1,1-dichloroethene ISOPAR G Pentafluoroethane 1,1,1,2-tetrafluoroethane n-butane n-pentane Example 1 100 350 100 100 - - Example 2 200 350 100 100 - - Example 3 100 250 100 100 - - Example 4 100 350 50 100 - - Example 5 100 300 70 100 - - Example 6 100 300 70 100 10 5 Comparative Example 1 100 350 - 100 - - Comparative Example 2 100 - 100 100 - - Comparative Example 3 - 350 100 100 - - Comparative Example 4 100 350 300 100 - - Comparative Example 5 100 400 100 100 - - Comparative Example 6 350 350 100 100 - -

Experimental Example

The insulation breakdown voltage, the flash point, the vapor pressure, and the cleaning power of the switchboard were measured after spraying the insulating detergents prepared in Examples 1 to 6 and Comparative Examples 1 to 6 on a test switchboard.

1. Breakdown voltage

For the dielectric breakdown voltage of the insulating detergent compositions prepared from the above examples and comparative examples, test and measurement were conducted in accordance with the Korean Industrial Standard KS C IEC 60156.

Before filling the sample into the container, slowly shake the container filled with the sample and turn it over several times to prevent the formation of bubbles so that the impurities contained in the sample are dispersed evenly.

The sample was then slowly poured into the container so that no bubbles were formed, and the temperature of the sample was measured and recorded. At this time, the voltage was applied to the electrode and the voltage was constantly increased from the zero point at a rate of 2.0 ± 0.2 kVs ^-1 until the dielectric breakdown occurred.

The breakdown voltage measures the value at this point to a maximum voltage that reaches the time at which the circuit is automatically or manually opened. A total of six insulation breakdown tests were carried out and the average value was calculated in kV.

2. Flash point

In order to measure the flash point of the insulating detergent composition prepared in the above Examples and Comparative Examples, the test was carried out based on Korean Industrial Standards KS M ISO 2592. After filling the sample up to 85 to 95% of the sample container, the sample was heated while increasing the temperature at a rate of 5 ° C / min.

At this time, a small test flame was passed over the sample container at intervals of 2 캜, and the initial temperature at which the test flame ignited the vapor on the sample was defined as the flash point at the ambient pressure temperature.

3. Vapor pressure

The specimen chamber of the vapor pressure cylinder was filled and the specimen chamber was connected to the air chamber at 37.8 ° C. The specimen chamber was then placed in a thermostatic chamber maintained at 37.8 ± 0.1 ° C. and shaken out regularly until equilibrium was reached.

The numerical values were measured by correcting the error of the pressure gauge against the vapor pressure obtained by the above method.

4. Cleaning power

A test panel for a test apparatus, which is a typical electrification apparatus, was contaminated with a certain amount of contaminants. Then, when the insulative detergent composition according to the present invention was sprayed, the degree of contaminant removal on the contaminated surface was measured.

Wax (lane mark, bull's yarn), grease (Harex OHD, Luminous Mineral Oil Co., Ltd.) and fine dust were used as the contaminants to be used in the respective experiments, and the detergency of the detergent composition was evaluated based on the following formula (1).

[Equation 1]

Cleaning force% = (A-B) / A * 100

(A = weight of contamination attached before test, B = weight of contamination attached after cleaning test)

division Breakdown voltage (kV) Flash point (℃) Vapor pressure (kPa) Cleaning power (%) Example 1 77.9 89.5 5.7 88.1 Example 2 78.5 85.0 5.8 87.5 Example 3 77.5 86.9 5.4 85.5 Example 4 78.0 90.2 5.3 85.2 Example 5 81.4 95.3 5.9 96.2 Example 6 81.9 97.9 6.1 98.5 Comparative Example 1 77.1 60.5 2.0 55.3 Comparative Example 2 63.7 51.8 3.0 45.4 Comparative Example 3 65.5 48.2 3.2 36.3 Comparative Example 4 55.1 65.5 5.1 45.9 Comparative Example 5 74.2 50.1 4.9 81.5 Comparative Example 6 69.8 42.5 4.6 82.8

As shown in Table 2, Examples 1 to 6 prepared with the insulating detergent composition according to the present invention have higher breakdown voltage and flash point than those of Comparative Examples 1 to 6, so that they can be used in electrification devices. It was dried so that the remnants of the cleaning agent remained on the surface of the washings. In addition, it was found that more than 85% of pollutants were removed and the cleaning power was also excellent.

Particularly, Example 6 is prepared by a) 1,1-dichloroethane, b) ISOPAR G (EXXON COMPANY), c) pentafluoroethane, d) 1,1,1,2-tetrafluoroethane, And n-pentane, it was found that not only insulation breakdown voltage and flash point were high but also cleaning power was improved.

On the contrary, in Comparative Example 1, the detergent remained on the surface of the object to be cleaned because the vapor pressure of the insulating detergent composition was low, and the detergency was lowered. In Comparative Example 4, the detergent composition rapidly dried due to the high vapor pressure of the insulating detergent composition, It was found that the detergent composition had a short staying time in the washed article, and therefore the washing power was reduced.

Claims (8)

a) 100 to 200 parts by weight of 1,1-dichloroethane; b) 250 to 350 parts by weight of ISOPAR G; c) 50 to 100 parts by weight of pentafluoroethane; And d) 100 to 200 parts by weight of 1,1,1,2-tetrafluoroethane, wherein the insulating detergent composition is sprayed onto an electric or telecommunication receiving facility And removing the foreign substance. The method for cleaning electric or telecommunication facilities using the insulation detergent composition according to claim 1,
The method of claim 1, wherein the spraying of the insulating detergent composition is performed in a state in which the electrical or communication receiving facility is energized.
The electric or communication receiving facility using the insulating detergent composition according to claim 1, wherein the detergent composition is sprayed to an electric or telecommunication receiving facility after a safety check step of judging whether or not the electric or communication receiving facility is abnormal. Lt; / RTI >
4. The safety inspection method according to claim 3, wherein the safety inspection object in the safety inspection step includes at least one of a power cable, a load switch, a lightning arrester, a power fuse, a transformer for a meter, a transformer for a meter, a digital integrated meter, a measuring instrument, Voltage transformer, measuring instrument, leakage detector, busbar connection, emergency power supply, accumulator, automatic switchgear, air circuit breaker, MCCB panel inside, video transformer, high-pressure exhaust fan and industrial Wherein the safety check item is at least one of a connection state, a ground state, a connection state, a discoloration state, a heat generation state, a noise state, a vibration state, and a screw tightening state of the safety inspection object A method of cleaning electrical or telecommunication facilities using an insulating detergent composition.
4. The method of claim 3, wherein the safety check is performed by one or more methods selected from the group consisting of visual inspection, a thermal imaging camera, and a measuring instrument.
The method of claim 1, wherein the injection is first applied to a lower end of the electrical or communication receiving facility and then sprayed to an upper end.
6. The process according to any one of claims 1 to 5, wherein a) 100 parts by weight of 1,1-dichloroethane; b) 300 parts by weight of ISOPAR G; c) 70 parts by weight of pentafluoroethane; And d) 100 parts by weight of 1,1,1,2-tetrafluoroethane.
6. The insulation cleaner composition according to any one of claims 1 to 5, further comprising 5 to 10 parts by weight of n-butane and 1 to 5 parts by weight of n-pentane. Or a method of cleaning a communication receiving facility.