KR20150084568A - Protecting method of corrosion or dew condensation in electronic supporting apparatus, electricpower pipe, duct cave, or manhole - Google Patents

Abstract

The purpose of the present invention is to provide a method to reduce corrosion or dew condensation on an electricity supply equipment for a power supply comprising: a first step in which an anti-corrosion coating is applied to an inside of the electricity supply equipment; a second step in which an anti-dew layer is attached before full hardening of the coating in the first step; and a third step in which a moisture control paint is applied on the surface when the second step is finished. Since the anti-corrosion coating (UW-51) applied is applicable on a part where water exists, it can be applied without a separate drying step, and the superior adhesive strength makes the UW-51 effective in preventing corrosion and cracks on a concrete surface. The second step is a step of attaching the anti-dew layer before the UW-51 applied in the second step is completely hardened, and the anti-dew layer serves as insulation to block contact between the warm air inside and the cold air outside of the equipment on the ground. The third step is a step of attaching the moisture control paint, and the moisture control paint servers to control humidity by absorbing warm moisture inside the equipment on the ground, emitting moisture if humidity is low; and is effective in preventing dew condensation.

Description

[0001] 1. Field of the Invention [0002] The present invention relates to a method of preventing corrosion or dew condensation in a power supply apparatus, a power source, a cavity, and a manhole,

This paper describes a method for preventing corrosion and condensation phenomenon in order to obtain the effect of prevention of condensation and corrosion problems caused by moisture, condensation and water in a ground apparatus (transformer, switch, etc.) for electric supply, electric power source, manhole, will be.

The method for preventing corrosion and / or dew condensation in electric power supply apparatuses, electric power sources, openings and manholes disclosed in the present invention is a method for reducing the corrosion and / A second step of adhering a dew condensation preventing layer before reaching complete curing after the first step work and a third step of applying a moisture control paint to the surface portion after the second step work, This is a technique to prevent corrosion or condensation of supply-related equipment.

Generally, the ground equipment (transformer, switchgear) which is the equipment for supplying electric power, the power cable, etc., generates heat in the cable inside or the equipment itself. As a result, the ground equipment transformer and the switchgear, A phenomenon occurs.

In addition, if natural condensation occurs or water is present, it causes corrosion. For example, there is a cause of heat generation of the power cable itself in the electric power area, and a warm air layer inside the underground causes contact with the cold wall of the wall, , Depending on these factors, it is easy for the equipment to rise in humidity or to suck moisture, which will greatly affect the safety of the equipment.

In order to solve the above-mentioned problems, the registered utility model No. 0335264 discloses a method of eliminating the inconvenience of replacing the entirety of the ground equipment box due to local corrosion due to the inadequate ventilation, A plurality of angle brackets joined to the inner surface of the main body of the ground device and the ground device box main body. The angle bracket can be roughly divided into a support for supporting between the ground device main body and the foundation bar, A pair of vertical frames formed of a stainless steel metal and painted on the surface thereof and supporting the right and left side angle brackets, and a pair of transversely extending horizontal frames joined to both ends of the vertical frames to support the front and rear angle brackets Frame, and each vertical frame and the horizontal frame are formed with ventilation holes A ground device housing structure is disclosed.

In addition, Patent Publication 2009-041013 discloses an apparatus for preventing corrosion of an ASSEMBLY and an apparatus for preventing corrosion of the ASSEMBLY, wherein the interior of the ASSEMBLY is provided with a compartment inside the enclosure, the inlet is exposed to the outside of the building, A plurality of supply ducts connected to the upper portion of the switchgear in a state of being connected to the outlet of the air supply and supply clean air to the inside of the switchgear, And a plurality of exhaust ducts connected to the bottom of the switchboard in a state of being connected to the outlet of the exhaust pipe and for exhausting the air inside the switchboard, Thereby preventing corrosion of the switchboard.

In addition, Patent Publication No. 2009-099680 discloses an automatic ground switch (PAD SW) installed in the outdoors to promote the circulation of air inside the enclosure, thereby preventing malfunctions and corrosion of sensors in the apparatus caused by damage to the automation equipment due to condensation The protective ventilator is provided with a ventilation hole having a flange for bolting the ventilation hole around the ventilation hole drilled in the roof of the protection box and a cover for forming a ventilation passage between the ventilation opening and the roof by an arm radially extending from the upper end of the ventilation port And an elongated bracket that is attached to an upper portion of the ventilating opening and is engaged with an elbow bracket that is engaged with a bottom surface of the suction fan for a period of time determined by a timer, A timer that activates the fan, and a timer that electrically opens and closes the timer And a fuse connected to a fuse holder for protecting the automation device from an overcurrent and an overload.

However, the above-described technique is intended to find a structural deformation structure for reducing the moisture in the structure of the ground apparatus related to the electric supply, but since the adaptability to the actual work site is insufficient and the condensation blocking effect is not expected, It has been partially tried, but it has not been applied to the effect of preventing condensation.

As a practical means to reduce the corrosion of ground equipment (transformer, switchgear) in the field, it is a practical means to prevent condensation and to prevent condensation inside the equipment by blocking the warm air coming through the cable of the duct by blocking the bottom part of ground equipment with acrylic plate. Has been partially applied, but it requires a lot of steps for drawing a large number of holes in the acrylic plate and pulling out the cable, thus causing cost problems. In order to prevent the bottom part of the ground equipment, it is necessary to insert the acrylic plate in a narrow space It is not possible to install in a state where there are many cables in the space, so it is difficult to install the ground equipment itself by a crane, and it is difficult to install many cables through the acrylic plate. Ineffective It has a problem.

In addition, in the electric power source and ground equipment enclosure, it is possible to attempt to prevent condensation by bonding the insulation to the wall or coating the wall because the humidity is high and the warm air comes into contact with the cold wall surface and always keeps the wet wall surface. And there was a lot of difficulty in coating and installing the wet surface because it would cause a fire hazard in the electric power plant when the electric heater was used to dry the inside of the appliance case.

The purpose of this paper is to investigate the effects of moisture and external moisture due to high humidity in ground equipment installed for electric power supply, transformer, electric power, manhole and cavity, or wet surface and natural corrosion due to dew condensation It is an invented invention that recognizes the problem of finding a means for solving the problem of hindering the safety of the device.

This is a preventive measure to reduce corrosion and condensation phenomenon of electric supply equipment, manhole, and cavity installed to supply electric power. It is a first step process to coat inside of electric supply equipment, manhole, and cavity with corrosion inhibitor A second step of adhering a dew condensation preventing layer before reaching full curing after the first step work and a third step of applying a moisture control paint to the surface portion after the second step work, And to provide a method for preventing corrosion or dew condensation of a manhole or a cavity.

The present invention relates to a device for preventing the safety of a device due to permeation of moisture or external moisture due to high humidity in a ground device installed for electric supply, a transformer, a power source, a manhole or a cavity, or natural corrosion due to the condensation of the device The technical idea of the present invention presented as a means for solving the problems can be applied to the basic processes from the first step to the third step as follows.

In the first step, UW-51 coating agent is coated with a corrosion inhibitor (UW-51) in a ground apparatus box, a power source, a cavity, and a manhole, and the UW-51 coating agent used in the present invention does not use a combustible solvent such as gasoline There is no risk of fire even when working in a space or underground space, and the safety of workers is assured from the risk of suffocation in the coating operation.

Also, UW-51 can be coated in water, so it can be applied without need of a separate drying process. UW-51's strong adhesive force can prevent corrosion of concrete surface and crack It is also possible to coat directly on the water base.

The second step is a step of coating the anti-condensation layer (C-200) before the full curing after coating with the UW-51, and the anti-condensation layer (C-200) The contact is shut off, and the condensation phenomenon is originally blocked.

The third step is to attach the moisture control paint (C-500) to the upper part of the dew condensation preventing layer.

The present invention is an invention of a technical idea to accomplish the object of the present invention from a process including the above-described first to third steps.

The application of the first step is to clean the wet surface of the electric supply equipment, the manhole, and the cavity, and after coating with the corrosion inhibitor (UW-51) And can be applied to adhere the barrier layer.

The undercoat composition (UW-51) applied to the first step may be applied to achieve a 4: 1: 1 weight ratio of the underwater coating composition and the underwater hardening composition, wherein the underwater coating composition is a bisphenol A- 20 to 40 parts by weight of an inorganic filler selected from titanium oxide, alumina, silica, barium sulfate, fumed silica and talc; 15 to 25 parts by weight of a metal selected from aluminum (Al), magnesium (Mg) And 5 to 15 parts by weight of a polyethylene glycol containing a mercapto group is used as a corrosion inhibiting coating composition in a composition containing 3 to 5: 1 by weight of a curing composition comprising an underwater coating composition and an amine series compound .

In the second step after the application of the first step, the dew condensation preventing layer is applied to prevent the corrosion of the concrete and to prevent the condensation on the surface. The dew condensation preventing layer may be formed by using a heat insulating material sold in the market Bar and insulation materials are largely classified into organic insulation materials such as styrofoam and urethane foam, and inorganic insulation materials such as glass wool, mineral wool, and gypsum. In the meantime, organic insulation materials such as styrofoam have been popular due to low cost. However, It is possible to use inorganic insulation material of KCC or flame-retardant synthetic resin of epoxy material. Among the products to be distributed in the market, for example, PF board provided as a flame retardant insulation material in LG House, or Ake Kyong Oil Co., Ltd. Flame retardant heat insulation resin, freeboard flame retardant insulation material, etc. A heat insulating material may be used.

In general, the flame retardant insulating material tends to be easily peeled off even if it is difficult to adhere to a wet surface or a moist surface, so that it is difficult to adhere the heat insulating material in the presence of moisture. However, in the first method, When a corrosion inhibitor (UW-51) is applied in combination with a curing composition of 4 ± 1: 1 weight ratio, it is possible to easily adhere to the insulation and resin and to prevent the corrosion and dew condensation The anti-condensation layer (C-200) is used for insulation, it cuts off the contact between the cold temperature inside the ground equipment and the warm temperature inside and it cuts off the condensation. In summer, The function of providing the insulation effect is also used, and the one surface of the heat insulating material is first applied in the third step Is applied by coating a coating control (C-500) for attachment to which the corrosion inhibitor (UW-51) coating the wall surface can be applied not to the mold occurs in high humidity.

The moisture control paint (C-500) applied in the third step is prepared by mixing 20 to 30 parts by weight of vermiculite powder and 5 to 30 parts by weight of calcined shell powder in 100 parts by weight of the corrosion inhibitor (UW-51) 10 parts by weight, and it is provided as a moisture control paint having antimicrobial properties to absorb the moisture of the inside of the ground equipment and to release the moisture when the humidity is low, thereby preventing the occurrence of condensation , And the calcined shell powder can be applied to increase the antibacterial property of the moisture control paint.

Other embodiments in which the technical idea of the present application is specifically embodied will be described in detail in the following description of the invention.

The method of the present invention for preventing corrosion or dew condensation of electric supply equipment, manholes, and openings described in the present application can be carried out immediately without a drying process of drying a surface of a concrete having moisture or moisture using an underwater coating agent. It is necessary to use a heat source such as a hot air blower to dry the moisture surface in a closed space or a place where the fire risk is high in order to reduce the air for preventing corrosion or dew condensation of the related equipment, It provides the effect of securing safety from danger that may cause fire.

Fig. 1 is a comparative photograph of the path of dew condensation and moisture generation in a general concrete wall and the example of moisture and condensation blocking when the present technique is applied.
2 is a photograph showing an example of application process of an embodiment to which the technical idea of the present application is applied.
Fig. 3 is a comparative photograph of an application process example in which the technical idea of the present application is implemented.
Fig. 4 is a summary photograph to which the technical idea of the present application is applied.

Before describing the embodiments of the invention for implementing the technical idea of the present application, the terms or words used in the specification or claims of the present application should not be construed as limited to ordinary or dictionary terms, The scope of protection of the present invention should be construed in accordance with the technical idea of the present invention and the examples described in this specification are only the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention , It is to be understood that various equivalents and modifications may be substituted for those at the time of the present application.

In addition, the embodiments described below describe the best modes that have been found through numerous trial errors, and the ranges indicating the upper and lower limits of the numerical values are intended to achieve the purpose desired by the inventor when the upper and lower limits of the numerical values are exceeded It should be recognized that it is a fixed number.

Preparation Example of Corrosion inhibitor (UW-51)

①. Preparation of anti-corrosion coating liquid

4 kg of the sulfate bisphenol A-modified epoxy resin supplied by Shin-Etsu Chemical Co., Ltd., 1.0 kg of fine titanium oxide in the range of 0.5 to 2 mu m, 0.5 kg of alumina, 0.5 kg of silica, 0.5 kg of barium sulfate, 0.5 kg of talc and 0.5 kg of aluminum (Al) in the range of 0.5 to 2 占 퐉 in metal, 0.5 kg of magnesium (Mg), 1.0 kg of zinc (Zn) with a mercapto functional group 1.0 kg of polyethylene glycol was added and mixed to prepare a preliminary coating solution for corrosion prevention

②. Preparation of the curing composition

6.0 kg of a modified aliphatic amine, 3 kg of a tertiary amine, and 1 kg of a fumed silica as a trade name fumed silica were compounded on a national highway to prepare a curing composition.

The applicant hereby intends to use UW-51 as a corrosion inhibitor which is provided to be used as a corrosion inhibitor by mixing at a ratio of the curing composition 1 of the corrosion inhibiting coating solution 4:

Examples of Preparation of Moisture Control Paint

The vermiculite was calcined at 1050 kg of the corrosion inhibitor (UW-51) for 10 hours or more at a high temperature (950 ° C) burning furnace to remove impurities, and the vermiculite was cooled to room temperature. 2.5 kg and shell shells were fired at a high temperature (950 ° C) baking furnace for 10 hours or longer to remove impurities, and the shells cooled at room temperature were crushed and mixed with 0.8 kg of calcined shell powder passing through the sieve in the range of 200-300 mesh (C-500) as a moisture control paint to provide antimicrobial properties.

Hereinafter, an application example in which the technical idea of the present application is specifically implemented will be described with reference to the drawings.

FIG. 1 is a view showing a path of occurrence of dew condensation and moisture penetration in a general concrete wall. In the left photograph, a concrete concrete wall not covered by the present invention meets with steam-containing air as an inner wall and condensation occurs. And cracks occur in the wall during the summer and winter when there is a temperature difference between the inner wall and the outer wall of the wall, or photographs are generated due to natural corrosion. On the right side, When the present technology is applied to the inner wall of a wall to form a dew condensation preventing layer on the outer side of a wet surface thereof after the water-borne corrosion inhibitor (UW-51) is coated on the wet surface, Prevents the dew condensation preventing layer from penetrating into the wall by moisture or leakage from the outer wall It shows the contrast picture is also to be applied to achieve a structure that blocks the condensation as a result of not containing water vapor of the inner wall of air passing through the concrete wall, so preservatives (UW-51) the coating layer is blocked off.

FIG. 2 is a schematic view of a structure of a concrete structure having a concrete wall as shown in FIG. 2, which is applied on a process-by-process basis in order to explain an embodiment to which the technical idea of the present application is applied. The embodiment to be applied for each process in the structure having the ground equipment is shown in the right photograph.

In the left side view of FIG. 2A, when a machine or an exhibition facility is installed inside a structure having a concrete wall, the walls are stained with mold due to moisture, and a photograph showing a state in which water drops are formed on the ceiling is checked When the machine or the exhibition facility is installed inside the frame enclosure provided with the iron plate wall, the floor and the upper surface of the frame are covered with the inside of the enclosure The photographed state of the ceiling, the wall surface, and the surface of the electric power device with the water in it can be confirmed, and the photograph of the state before the technique of the present application is applied is shown.

FIG. 2B is a photographic view of a pretreatment preparation state in which the concrete wall and the ceiling portion are cleaned in order to apply the technical idea of the present invention to remove a silk thread, a foreign matter, a mold, The photograph on the right side shows a photograph of the operation state of removing the cleaning of the wall surface of the frame enclosure or the ceiling of the ceiling provided with the ground wall switch or the transformer provided by the iron plate wall.

2C is a photograph showing a working state in which a corrosion inhibitor (UW-51) is applied on a concrete wall and a ceiling portion on a wet surface of the wall in order to apply the technical idea of the present invention. In the right photograph, (UW-51) is applied to a wall surface or a ceiling inside a frame provided with a water-free state without a drying process.

2D, the anti-condensation layer (C-200) coated on one side of the moisture control paint (C-500) is applied to the anti-corrosion coating agent (U- (UW-51) of the concrete wall to the side where the moisture control paint (C-500) is not applied, thereby completing the work. In the right side view, The anti-condensation layer (C-200) on which the moisture control paint (C-500) is applied on one side of the wall or ceiling of the frame enclosure is attached to the anti-corrosion agent (UW-51) And the work process is completed.

FIG. 3 shows an embodiment of the present invention applied to a concrete wall in a left side view and an embodiment applied to an iron plate according to a right side view. In the left side view, a corrosion inhibitor (UW (C-500) having antimicrobial properties outside the dew condensation preventing layer is formed on the outside of the dew condensation preventing layer (C-500) with a thickness of 5 to 10 mm as a flame-retardant heat insulating material (UW-51) coating layer is first formed when a ground apparatus such as a transformer or switch is applied to an iron plate, and a thickness of 5 to 10 mm (C-500) having antimicrobial properties outside the dew condensation preventing layer is applied to form a dew condensation preventing layer, and a moisture control coating (C-500) Will.

FIG. 4 is a graph showing the results obtained by forming a coating layer of a corrosion inhibitor (UW-51) when applied to a concrete wall or an iron plate when the technical idea of the present application is applied and forming a dew condensation preventing layer with a thickness of 5 to 10 mm An embodiment in which a moisture control paint having antimicrobial properties outside the barrier layer is applied as a dew condensation barrier layer does not require a separate drying process for drying the water in the concrete wall or steel plate which is always exposed to moisture or moisture After removing the contaminants, the coating using UW-51, which has excellent adhesion to water under water and moisture, reduces the working time air and consequently reduces the labor cost. When the dew condensation preventing layer (C-200) is attached before full curing, the dew condensation preventing layer is used for heat insulation, (C-500) is coated on the outside of the dew condensation preventing layer to provide a dew condensation preventing effect by blocking the contact between the cold outside temperature and the warm temperature inside, and to provide a dew condensation preventing structure continuously. It is the invention of thought.

However, at the time of site construction, the moisture control paint (C-500) is first applied to the anti-condensation layer (C-200) and the anti-corrosion agent (UW-51) It can be more conveniently applied when the work is carried out by means of attaching to the application surface.

The drawings of the present application are presented in the form of photographs, and the symbols shown in the photographs are written in a gentle manner.

Claims (5)

A method for preventing corrosion or dew condensation in order to increase the durability of a device, a manhole,
(UW-51) to coat the interior of the equipment, manhole, and cavity of the electric supply system with a corrosion inhibitor (UW-51);
A second step of attaching the dew condensation preventing layer (C-200) before reaching full curing after the first step operation;
A third step of applying a moisture control paint (C-500) to one side of the anti-condensation layer (C-200);
And a method of preventing corrosion or dew condensation of a manhole or a cavity. The method according to claim 1,
The above-mentioned first step process is applied as means for performing coating with the corrosion inhibitor (UW-51) without cleanly cleaning the wet surface of the electric supply related equipment and then performing the drying process. , A method for preventing corrosion or condensation of a cavity. The method according to claim 1,
A method for preventing corrosion or dew condensation of an electric supply-related device, a manhole or a cavity, characterized in that the dew condensation preventing layer (C-200) used in the second step is selected from flame retardant heat insulating material and flame retardant resin. The method according to claim 1,
After the moisture control paint (C-500) is first applied to the dew condensation preventing layer (C-200) applied in the second step process, the side where the moisture control paint (C-500) Wherein the work is carried out in the order of being adhered to the application surface. The method according to claim 1,
The moisture control paint (C-500) used in the third step is prepared by blending 20 to 30 parts by weight of vermiculite powder and 5 to 30 parts by weight of calcined shell powder in 100 parts by weight of the corrosion inhibitor (UW-51) And a moisture control paint having antimicrobial activity is used in an amount of 10 parts by weight per 100 parts by weight of the composition.

Images