Uninterrupted water flow prevention method using a uninterrupted water flow coating device

Abstract

The non-disruptive rust prevention method using the non-disruptive coating device of the present invention relates to a method capable of performing rust prevention treatment to protect perforated areas formed in a pipe from corrosion, etc., when applying a non-disruptive branching method or a non-disruptive blocking method. The method utilizes a non-disruptive coating device and comprises: a non-disruptive coating device installation step (S10) in which the non-disruptive coating device is installed on a gate-type valve in a closed state; a gate-type valve opening step (S20) in which the gate-type valve is opened; a lifting part lowering step (S30) in which the lifting part of the non-disruptive coating device is lowered to move the coating part to a position in contact with the perforation of the pipe; a rotary drive part driving step (S40) in which the rotary drive part is driven to move the coating part along the perforation while receiving an underwater coating liquid supplied from the supply means through the supply line part to coat the perforation using the coating part in contact with the perforation of the pipe; and a coating part return step in which the supply of the underwater coating liquid is cut off and the lifting part is raised to return the coating part. The method is characterized by including a step (S50), a gate-type valve closing step (S60) for closing the gate-type valve opened in the gate-type valve opening step (S20), and a non-stop water supply coating device removal step (S70), thereby having the effect of preventing corrosion caused by perforation of the piping and the effect of providing anti-corrosion treatment during the implementation of a non-stop water supply branching method or a non-stop water supply blocking method by applying an underwater coating liquid to the perforated area.

Description

Technology Field

[0001] The present invention relates to a method for performing anti-corrosion treatment to protect perforated areas formed in a pipe from corrosion when applying a non-disruptive branching method or a non-disruptive shut-off method used for maintenance of a fluid-carrying pipe, such as a water supply pipe, and in particular, to a method for performing anti-corrosion treatment on perforated areas underwater using a non-disruptive coating device. Background Technology

[0002] Non-disruptive branching or non-disruptive shut-off methods are methods of performing branching or shut-off on a pipe while maintaining the flow state of the fluid in the pipe. In order to apply non-disruptive branching or non-disruptive shut-off methods, a hole for branching or a hole for inserting a shut-off head must be formed in the pipe.

[0003] That is, as illustrated in the drawing for explaining the perforation formed in the pipe of Fig. 1, in order to implement a non-stop branching method or a non-stop shut-off method, a perforation (3) as illustrated in Fig. 1 (b) is formed at a predetermined location in the pipe (2) through which a fluid such as tap water (1) is flowing, as illustrated in Fig. 1 (a).

[0004] Such a hole (3) is formed by installing a gate-type valve connected to a branch pipe installed in the pipe, and a cylindrical cutting blade is inserted through the gate-type valve to form a hole in the pipe, so that in the non-stop branching method, it is for connecting the branch pipe, and in the non-stop shut-off method, it is for inserting the shut-off head of the fluid shut-off device.

[0006] Meanwhile, in the case of a pipe (2) made of cast iron or steel, the inner or outer surface of the pipe (2) is typically treated to prevent corrosion, so it is not corroded by a fluid such as tap water (1). However, as shown in (b) of Fig. 1 above, if a hole (3) is formed in the pipe (2) using a drilling machine that forms a hole in the pipe (2), an exposed surface (3-1) is formed that is cut by the drilling machine according to the thickness of the pipe (2).

[0007] Since the exposed surface (3-1) of such a hole (3) is not rust-proofed, it is easily oxidized and rust (4) is formed when exposed to tap water (1) as shown in (c) of Fig. 1 above, and corrosion of the exposed surface (3-1) can cause corrosion in the rust-proofed part around the hole (3).

[0009] For this reason, when executing the non-disruptive branching method or the non-disruptive blocking method, it is necessary to form a predetermined coating layer (5) along the exposed surface (3-1) of the hole (3) so that the exposed surface (3-1) of the hole (3) is not exposed to tap water (1) as shown in (d) of Fig. 1 above. However, since there is no device capable of coating the exposed surface (3-1) of the hole (3) in a pipe (2) in which fluid is flowing, anti-corrosion treatment for the hole (3) cannot be performed when executing the non-disruptive branching method or the non-disruptive blocking method.

[0010] That is, although non-toxic underwater coating solutions of various materials are used in various fields, there is no means to coat the exposed surface (3-1) of the hole (3) using an underwater coating solution in non-disruptive branching methods or non-disruptive blocking methods.

[0011] For example, various coating agents capable of being coated underwater, such as the invention titled "Method for preventing salt damage and corrosion of concrete and steel structures in water or at sea and underwater coating agent used therein," application number 10-2020-0097876, and furthermore, non-toxic underwater coating agents are being developed and used, so that corrosion prevention treatment can be performed on the perforations (3) of the pipe (1) using these. However, there is no means to coat the exposed surface (3-1) of the perforations (3) formed in the pipe (1) during the implementation of the non-disruption branching method or non-disruption blocking method, so the exposed surface (3-1) is left as is. As a result, in the case of the pipe (2) to which the non-disruption branching method or non-disruption blocking method is applied as in (c) of Fig. 1, significant corrosion occurs at the perforation (3) area, and there is a problem that the durability of the pipe (2) is rapidly reduced due to this corrosion. The problem to be solved

[0012] The present invention was devised to solve the problems of the prior art described above, and aims to provide a method for rust prevention treatment of perforated pipes using a non-disruption coating device capable of coating the exposed surface of a perforation formed during the implementation of a non-disruption branching method or a non-disruption blocking method performed at an arbitrary location for the maintenance of a fluid-carrying pipe, such as a water supply pipe, using an underwater coating solution.

[0013] In addition, the present invention aims to provide a non-disruptive corrosion prevention method that can maintain the durability of piping by preventing corrosion through coating the exposed surface of a perforation with an underwater coating solution.

[0014] Other objectives of the present invention can be understood through the features of the present invention, more clearly understood through embodiments of the present invention, and can be realized by means and combinations set forth in the claims. means of solving the problem

[0015] In order to achieve the problem that the present invention aims to solve as described above, the present invention has the following technical features.

[0017] The non-stop rust prevention method using the non-stop coating device of the present invention comprises: a cylindrical housing part connected to a gate-type valve installed in a branch pipe of a pipe with a perforation formed therein, with the bottom surface open and the top surface closed; a lifting part installed parallel to the central axis of the cylindrical housing part and moving up and down along the central axis with respect to the top surface; a rotary drive part that moves together with the lifting part and rotates with the central axis of the lifting part as the rotation axis, with one end exposed to the upper surface of the lifting part and the other end exposed to the lower surface of the lifting part; and a coating part connected to the other end of the rotary drive part and applying an underwater coating liquid supplied while moving along the exposed surface of the perforation by the rotation of the rotary drive part to the exposed surface. The present invention relates to a non-stop corrosion prevention method using a non-stop coating device for coating a perforated portion of a pipe, characterized by comprising: a supply nozzle connected to a supply means for supplying an underwater coating liquid to supply an underwater coating liquid to the coating portion, and supplying the underwater coating liquid so that the underwater coating liquid can be applied to the exposed surface of the perforation by the coating portion, and a supply line portion having an inlet connected to the supply means for injecting the underwater coating liquid. The method comprises: a non-stop coating device installation step (S10) of installing the non-stop coating device on the gate-type valve in a closed state; a gate-type valve opening step (S20) of opening the gate-type valve after the installation of the non-stop coating device is completed; and a lifting member lowering step (S30) of lowering the lifting member of the non-stop coating device to move the coating portion to a position in contact with the perforation of the pipe when the gate-type valve is fully opened. A rotary drive unit driving step (S40) for driving the rotary drive unit to move the coating unit along the hole while receiving an underwater coating liquid supplied from the supply means through the supply line to coat the hole using the coating unit adjacent to the hole of the pipe;The method is characterized by including: a coating section return step (S50) in which, when the formation of a coating layer on the perforation of the pipe is completed through the rotary drive unit driving step (S40), the supply of the underwater coating liquid is cut off and the lifting unit is raised to return the coating section; a gate-type valve closing step (S60) in which the gate-type valve opened in the gate-type valve opening step (S20) is closed; and a non-stop coating device removal step in which, when the gate-type valve is completely closed in the gate-type valve closing step (S60), the non-stop coating device is removed from the gate-type valve.

[0019] In addition, in a non-stop rust prevention method using the non-stop coating device of the present invention, the coating part is characterized by comprising: a rod having an extension function, which is coupled to the other end of the rotary drive part so as to be rotatable up and down at one end; and a coating roller coupled to the other end of the rod and rotating in contact with the exposed surface of the hole.

[0021] In addition, in the non-discontinuous anti-corrosion method using the non-discontinuous coating device of the present invention, the roller-type coating part is characterized by being composed of two rods spaced 180 degrees apart or four rods spaced 90 degrees apart.

[0023] In addition, in the non-disruptive anti-corrosion method using the non-disruptive coating device of the present invention, the coating roller is characterized by comprising: an intermediate roller in contact with the exposed surface of the hole; an upper roller in contact with the outer diameter surface of the pipe connected to the exposed surface; and a lower roller in contact with the inner diameter surface of the pipe connected to the exposed surface.

[0025] In addition, in the non-discontinuous anti-corrosion method using the non-discontinuous coating device of the present invention, the supply line portion is composed of two supply nozzles and is positioned between the middle roller and the upper roller and between the middle roller and the lower roller of the coating roller, respectively.

[0027] In addition, in the non-discontinuous anti-corrosion method using the non-discontinuous coating device of the present invention, the supply line portion is characterized by comprising: an inlet installed in the lifting portion and exposed at the top; a supply pipe connected to the inlet and exposed to the cylindrical housing portion through the interior of the lifting portion; and a soft connecting pipe connecting the supply pipe and the supply nozzle.

[0029] In addition, in the non-stop rust prevention method using the non-stop coating device of the present invention, the cylindrical housing part further comprises a monitoring window that allows the interior of the cylindrical housing part to be visually inspected from the outside. Effects of the invention

[0030] The present invention has the effect of enabling corrosion prevention treatment to be performed on perforations formed at arbitrary locations in a pipe, such as a water pipe, for the purpose of maintaining a fluid-carrying pipe, without interrupting the water supply, through the means of solving the above-mentioned problem.

[0031] That is, the non-disruptive rust prevention method according to the present invention has the effect of preventing rust on pipe perforations by forming a coating layer on the pipe perforations during the implementation of a non-disruptive branching method or a non-disruptive blocking method by applying an underwater coating liquid to the perforated area using a non-disruptive coating device.

[0032] Accordingly, the non-disruptive rust prevention method according to the present invention allows for rust prevention treatment of a perforated pipe to be performed during the non-disruptive branching or shut-off process, thereby maintaining the durability of the pipe and, in the case of water supply pipes, ensuring that the quality of water transport is not affected.

[0033] Other effects of the present invention can be understood through the features of the present invention, can be more clearly understood through the embodiments of the present invention, and can be demonstrated by the means and combinations set forth in the claims. Brief explanation of the drawing

[0034] FIG. 1 is a drawing for explaining a perforation formed in a pipe, FIG. 2 is a drawing for explaining the process of a non-disruptive rust prevention method using the non-disruptive coating device of the present invention. FIG. 3 is a drawing for explaining the installation step of the non-disruptive coating device of the non-disruptive anti-corrosion method using the non-disruptive coating device of the present invention. FIG. 4 is a drawing for explaining a non-disruptive coating device of a non-disruptive anti-corrosion method using the non-disruptive coating device of the present invention. FIG. 5 is a drawing for explaining a cylindrical housing portion according to the non-disruptive coating device of the non-disruptive anti-corrosion method using the non-disruptive coating device of the present invention. FIG. 6 is a drawing for explaining the lifting unit according to the non-stop coating device of the non-stop anti-corrosion method using the non-stop coating device of the present invention. FIG. 7 is a drawing for explaining a roller-type coating part according to the non-disruptive coating device of the non-disruptive anti-corrosion method using the non-disruptive coating device of the present invention. FIG. 8 is a drawing for explaining a coating roller according to the non-stop coating device of the non-stop anti-corrosion method using the non-stop coating device of the present invention. Specific details for implementing the invention

[0035] The following detailed description of the invention refers to the accompanying drawings, which illustrate specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that various embodiments of the invention are different but need not be mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the technical spirit and scope of the invention in relation to one embodiment. Furthermore, it should be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the technical spirit and scope of the invention. Accordingly, the following detailed description is not intended to be limiting, and the scope of the invention is limited only by the appended claims, including all equivalents thereof. Similar reference numerals in the drawings refer to the same or similar functions across various aspects.

[0037] The non-disruptive rust prevention method using the non-disruptive coating device of the present invention is a method for preventing rust on a hole (3) that occurs during the non-disruptive branching or non-disruptive blocking operation by using a non-disruptive coating device that coats the perforated part of a pipe as shown in FIG. 1, and is characterized by forming a predetermined coating layer (5) for preventing corrosion along the exposed surface (3-1) of the hole (3) using an underwater coating liquid as shown in (d) of FIG. 1.

[0039] As illustrated in FIG. 2, a drawing for explaining the process of a non-disruptive anti-corrosion method using a non-disruptive coating device of the present invention, the non-disruptive anti-corrosion method according to the present invention comprises a non-disruptive coating device installation step (S10), a gate-type valve opening step (S20), a lifting unit lowering step (S30), a rotary drive unit driving step (S40), a coating unit return step (S50), a gate-type valve closing step (S60), and a non-disruptive coating device removal step (S70).

[0041] The above step of installing a non-disruptive coating device (S10) is illustrated in (a) of the drawing for explaining the step of installing a non-disruptive coating device for a non-disruptive anti-corrosion method using the non-disruptive coating device of the present invention. In order to implement a non-disruptive branching method or a non-disruptive blocking method, a branch pipe (6) is connected to a pipe (1) by welding or bolting, and a gate-type valve (7) is installed on the branch pipe (6) connected to the pipe (1), and then a drill is installed on the gate-type valve (7).

[0042] Afterwards, the gate-type valve (7) is opened, and the pipe (1) is drilled using the drilling machine as shown in Fig. 1, then the gate-type valve (7) is closed and the drilling machine is removed.

[0043] In the case of the non-disruptive branching method, the branch pipe is installed after the drilling machine is removed, and in the case of the non-disruptive shut-off method, the pipe is shut off by installing a fluid shut-off device on the gate-type valve (7).

[0044] Meanwhile, the step (S10) of installing a non-stop coating device according to the present invention is to install the non-stop coating device (100) on the closed gate-type valve (7) as shown in FIG. 3 (b), after the gate-type valve (7) is closed, that is, after the drilling machine is removed or after the fluid blocking device is removed, as shown in FIG. 3 (a).

[0046] Meanwhile, the non-stop coating device (100) according to the present invention is formed by including a cylindrical housing part (10), a lifting part (20), a rotary driving part (30), a coating part (40), and a supply line part (50), as shown in FIG. 4, a drawing for explaining the non-stop coating device of the non-stop anti-corrosion method using the non-stop coating device of the present invention.

[0048] The above cylindrical housing (10) is made of a metal material and is coupled with a gate-type valve (7) installed in a pipe (2) with a perforation, as shown in (a) of the drawing for explaining the cylindrical housing according to the non-stop coating method of the non-stop anti-corrosion method using the non-stop coating device of the present invention.

[0049] As shown in Fig. 5(b), the cylindrical housing (10) has a cylindrical shape with an open bottom surface and a closed top surface, and has a connecting flange (13) for connecting to a gate-type valve (7) by a bolt method, and the connecting flange (13) has a plurality of bolt through holes (131) through which a connecting bolt (71) formed in the gate-type valve (7) passes.

[0050] In addition, the cylindrical housing part (10) according to the present invention has a lifting part coupling hole (12) formed in the center of the cylindrical housing part (10) as shown in Fig. 5 (b), which allows the lifting part (20) to move up and down while in a sealed state.

[0051] Such a lifting member coupling hole (12) can serve as various means to allow a column-shaped movable body to move up and down while sealing it so that fluid does not leak.

[0052] In addition, it is preferable that the cylindrical housing part (10) further includes a viewing window (11) that allows the interior of the cylindrical housing part (10) to be visually inspected from the outside.

[0053] The above-mentioned monitoring window (11) is a means for monitoring the coating part (40) located inside the cylindrical housing part (10) and visually checking the supply status of the underwater coating liquid, and is made of a transparent material such as reinforced glass or reinforced transparent synthetic resin, and can be formed on the upper surface of the cylindrical housing part (10) or on the side of the cylindrical housing part (10) as shown in (b) of FIG. 5.

[0055] The lifting member (20) is made of a metal material and, as shown in FIG. 6, a drawing for explaining the lifting member according to the non-stop coating method of the non-stop anti-corrosion method using the non-stop coating device of the present invention, is fastened to a lifting member coupling hole (12) located at the central axis of the cylindrical housing part (10) and installed parallel to the central axis of the cylindrical housing part (10) so as to move up and down along the central axis with respect to the upper surface.

[0056] As shown in FIG. 6 above, the lifting member (20) can be formed in various structures and shapes such that the lifting member (20) can move up and down relative to the cylindrical housing member (10), and the position of the coating member (40) changes up and down according to the up and down movement of the lifting member (30).

[0057] That is, the position of the coating part (40) is controlled by the lifting part (20), so the coating part (40) can be moved to the perforation (3) position of the pipe (2) using the lifting part (20), and when the coating work is completed, the coating part (40) can be returned to the inside of the cylindrical housing part (10).

[0059] As shown in FIG. 6, the above-mentioned rotary drive unit (30) moves up and down together with the lifting unit (30) in a column shape and rotates with the center axis of the lifting unit (30) as the rotation axis, and one end is exposed at the top of the lifting unit (30) and the other end is exposed at the bottom of the lifting unit (30).

[0060] Accordingly, the rotary drive unit (30) is coupled to allow rotation at the central axis of the lifting unit (30), is coupled in a sealed manner to prevent leakage, and serves to rotate the coating unit (40) along the perforation (3).

[0061] Meanwhile, as shown in FIG. 6, a handle (31) for rotating the rotary drive unit (30) around the central axis of the lifting unit (30) may be attached to one end of the rotary drive unit (30), and an installation member (32) for connecting to the coating unit (40) may be attached to the other end.

[0062] Such a rotary drive unit (30) can have various structures and forms installed to enable rotation while sealed in the lifting unit (30), and is not limited to any specific structure and form of a rotary drive unit.

[0064] As shown in FIG. 6, the coating part (40) is coupled to the other end of the rotary drive part (30), and moves along the exposed surface (3-1) of the hole (3) by the rotation of the rotary drive part (30) and applies an underwater coating liquid supplied from the supply means (8) to the exposed surface (3-1).

[0065] That is, the coating part (40) serves to form a coating layer (5) by applying an underwater coating solution to the exposed surface (3-1) of the perforation (3).

[0066] The coating part (40) can be a coating part (40) of various shapes and structures capable of applying an underwater coating liquid supplied by moving along the exposed surface (3-1) of the hole (3) by the rotating driving part (30) which is connected to and rotates the rotating driving part (30), and is not limited to any specific shape and structure of coating part (40).

[0068] As shown in FIG. 4, the above supply line section (50) is connected to a supply means (8) that supplies an underwater coating liquid and supplies the underwater coating liquid to the coating section (40). It has a supply nozzle (54) that supplies the underwater coating liquid so that the underwater coating liquid can be applied to the exposed surface (3-1) of the perforation (3) by the coating section (40), and an inlet (51) connected to the supply means (8) to inject the underwater coating liquid.

[0069] As shown in FIG. 4, the supply line section (50) is characterized by being composed of an inlet (51) installed in the lifting section (20) and exposed at the top, a supply pipe (52) connected to the inlet (51) and exposed to the cylindrical housing section (10) through the interior of the lifting section (20), and a soft connecting pipe (53) connecting the supply pipe (52) and the supply nozzle (54).

[0070] The above soft connecting tube (53) is intended to allow the coating part (40) to move easily according to changes in position and height as the coating part (40) moves along the exposed surface (3-1) of the perforation (3).

[0072] Meanwhile, the coating part (40) of the non-disruptive coating device (100) according to the present invention may have various shapes and structures capable of forming a coating layer (5) by applying an underwater coating liquid to the perforation (3) of the pipe (2), but it is preferable to have a coating part (40) with the structure as shown below.

[0074] As illustrated in FIG. 7, a drawing for explaining a roller-type coating section according to a non-discontinuous coating device of a non-discontinuous anti-corrosion method using a non-discontinuous coating device of the present invention, the coating section (40) may be a roller-type coating section (400) including a rod (410) and a coating roller (420).

[0075] As shown in (a) of FIG. 7, the roller-type coating unit (400) includes a rod (410) that is connected to the other end of the rotary drive unit (30) so as to be rotatable up and down and has an extension function, and a coating roller (420) that is connected to the other end of the rod (410) and rotates while in contact with the exposed surface (3-1) of the hole (3) to apply the supplied underwater coating liquid to the exposed surface (3-1).

[0076] As shown in (a) of Fig. 7 above, the roller-type coating part (400) has the characteristic that the coating roller (420) is coupled to the other end of the rod (410) which has an elastic function, and rolls along the exposed surface (3-1) of the hole (3) by the rotation of the rotary drive part (30) to apply the underwater coating liquid to the exposed surface (3-1) of the hole (3).

[0077] In particular, the roller (410) of the roller-type coating part (400) has the feature of being extendable so that the coating roller (420) can move along the exposed surface (3-1) of the perforation (3) which has a change in height, and the feature of being able to maintain a contact state while the coating roller (420) presses the exposed surface (3-1) of the perforation (3) with a predetermined force.

[0078] Accordingly, as shown in (a) of FIG. 7, it is preferable that the rod (410) be coupled to the other end of the rotary drive unit (30) so as to be rotatable up and down, and extend when there is no external force by compressed air or a spring, and extend and retract when there is an external force, and it is also preferable that the coating roller (420) coupled to the other end of the rod (410) be coupled so as to be rotatable relative to the other end of the rod (410).

[0080] Meanwhile, such a roller-type coating part (400) may be composed of one to four rods (410).

[0081] For example, the roller-type coating section (400) may be composed of two rods (410) spaced 180 degrees apart, three rods spaced 120 degrees apart, or four rods spaced 90 degrees apart, as shown in (b) of FIG. 7.

[0082] Accordingly, as the coating roller (420) is coupled to each rod (410), when the roller-type coating part (400) consists of one rod (410), the rotary drive unit (30) is rotated one full turn (360 degrees) to coat the exposed surface (3-1) of the hole (3); when the roller-type coating part (400) consists of two rods (410), the rotary drive unit (30) is rotated half a turn (180 degrees) to coat the exposed surface (3-1) of the hole (3); when the roller-type coating part (400) consists of three rods (410), the rotary drive unit (30) is rotated 60 degrees to coat the exposed surface (3-1) of the hole (3); and when the roller-type coating part (400) consists of four rods (410), the rotary drive unit (30) is rotated 45 degrees to coat the exposed surface (3-1) of the hole (3).

[0084] Meanwhile, the coating roller (420) is preferably formed to include an intermediate roller (420-1) that contacts the exposed surface (3-1) of the hole (3), an upper roller (420-2) that contacts the outer diameter surface (2-1) of the pipe (2) connected to the exposed surface (3-1), and a lower roller (420-3) that contacts the inner diameter surface (2-2) of the pipe (2) connected to the exposed surface (3-1), as shown in (a) of the drawing for explaining the coating roller according to the non-stop rust prevention method using the non-stop coating device of the present invention.

[0085] As shown in Fig. 8(b), the above coating roller (420) forms a coating layer (5) by applying an underwater coating liquid (C) to the adjacent outer diameter surface (2-1) and inner diameter surface (2-2), including the exposed surface (3-1) of the pipe (2), thereby improving the durability of the coating layer (5) and making the anti-corrosion treatment of the exposed surface (3-1) more effective.

[0086] Meanwhile, when the coating roller (420) is composed of an intermediate roller (420-1), an upper roller (420-2), and a lower roller (420-3) as described above, as shown in FIG. 8 (a), the supply line section (50) is preferably composed of two supply nozzles (54) and positioned between the intermediate roller (420-1) and the upper roller (420-2) of the coating roller (420) and between the intermediate roller (420-1) and the lower roller (430-3), respectively, so as to supply the underwater coating liquid (C) to the coating roller (420) so that the underwater coating liquid (C) can be applied more effectively.

[0088] At this time, the underwater coating liquid according to the present invention may be a non-toxic underwater paint, such as an aqua epoxy paint with excellent adhesion, durability, and chemical resistance; an underwater curing polyurethane paint that has excellent resistance to chemicals and water and provides a soft, glossy finish; an acrylic paint that is water-based, environmentally friendly, fast-drying, and non-toxic; a silicone paint that provides excellent water resistance and durability and forms a flexible, non-toxic coating layer; or a phosphate-based anti-corrosion paint that has excellent corrosion and water resistance and is non-toxic, and is not limited to any specific underwater coating liquid.

[0090] The non-stop rust prevention method according to the present invention, which uses the non-stop coating device (100) according to the present invention as described above, is as shown in FIG. 2 above, by installing the non-stop coating device (100) on a closed gate-type valve (7) and then opening the closed gate-type valve (7).

[0092] That is, the gate-type valve opening step (S20) operates the gate-type valve (7) in a closed state to open it in order to insert the non-stop coating device (100) into the branch pipe (6).

[0093] At this time, if dynamic pressure is required to drive the gate-type valve (7), dynamic pressure is applied between the branch pipe (6) and the cylindrical housing (10) of the non-stop coating device (100).

[0095] In the above lifting section lowering step (S30), when the gate-type valve (7) is fully opened, the lifting section (20) of the non-stop coating device (100) is lowered as shown in FIGS. 6 and 8, and the coating section (40) is moved to a position in contact with the perforation (3) of the pipe (2).

[0096] That is, the lifting member (20) is lowered by being connected to the lifting member coupling hole (12) located at the central axis of the cylindrical housing part (10) and installed parallel to the central axis of the cylindrical housing part (10) so that it moves up and down along the central axis relative to the upper surface of the cylindrical housing part (10), so that the coating part (40) can come into contact with the perforation (3) of the pipe (2) as shown in FIG. 8.

[0098] The above rotary drive unit driving step (S40) drives the rotary drive unit (30) to move the coating unit (40) along the perforation (3) while receiving the underwater coating liquid supplied from the supply means (8) through the supply line (50) in order to coat the perforation (3) with the underwater coating liquid using the coating unit (40) in contact with the perforation (3) of the pipe (2). Meanwhile, since the perforation (3) of the pipe (2) is in a state where water is filled with a predetermined pressure in the pipe (2), there is almost no influence from the flow of fluid, and as the influence of water pressure is dominant, the underwater coating liquid coated on the perforation (3) is not washed away by the flow of fluid. That is, as the pipe (2) is in a state where there is almost no flow velocity, the phenomenon of the underwater coating liquid coated on the perforation (3) being washed away by the flow velocity hardly occurs.

[0099] The rotary drive unit (30) rotates half a turn, a full turn, or a predetermined angle according to the configuration of the coating unit (40).

[0100] Accordingly, when the rotary drive unit (30) rotates while receiving the underwater coating liquid (C), the coating unit (40) rotates together as shown in (b) of FIG. 8, and the underwater coating liquid (C) is applied to the perforated (3) area to form a coating layer (5) for rust prevention.

[0102] The above coating section return step (S50) involves, as shown in (b) of FIG. 8, after the application of the underwater coating liquid (C) through the coating section (40) is completed, cutting off the supply of the underwater coating liquid (C) and raising the lifting section (20) to return the coating section (40) to the inside of the cylindrical housing section (10).

[0103] This is to close the gate-type valve (7) in an open state again in order to separate the non-stop coating device (100) from the gate-type valve (7).

[0105] The gate-type valve closing step (S60) above closes the gate-type valve (7) that was opened in the gate-type valve opening step (S20) above.

[0106] That is, as the gate-type valve (7) is closed, the non-stop coating device (100) can be removed from the gate-type valve (7).

[0108] In the above non-stop coating device removal step (S70), when the gate-type valve (7) is completely closed in the gate-type valve closing step (S60), the non-stop coating device (100) is removed from the gate-type valve (7), and thereby the non-stop anti-corrosion method according to the present invention is completed.

[0110] Through the above process, the non-disruptive rust prevention method according to the present invention, which uses a non-disruptive coating device (100), can perform rust prevention treatment by forming a coating layer (5) for rust prevention on the perforated (3) portion of the pipe (2).

[0112] Although the present invention has been described above based on preferred embodiments, the technical concept of the present invention is not limited thereto, and it is obvious to those skilled in the art that modifications or changes can be made within the scope described in the claims, and such modifications or changes fall within the scope of the appended claims. Explanation of the symbols

[0113] 1 : Tap water 2 : Piping 2-1 : Outer surface 2-2 : Inner surface 3 : Perforation 3-1 : Exposed surface 4 : Green 5: Coating layer 6 : Branch 7: Gate type valve 8: Means of supply 10: Cylindrical hull section 11 : Watch window 12: Lifting part coupling hole 13 : Connecting flange 30: Rotary drive unit 31 : Handle 32 : Installation hole 40: Coating part 50 : Supply line section 51 : Inlet 52 : Supply pipe 53 : Connector 54 : Supply nozzle 71: Connecting bolt 131 : Bolt penetration hole 400 : Roller-type coating section 410 : Load 420: Application Roller 420-1 : Middle roller 420-2 : Upper roller 420-3: Lower roller

Claims

Claim 1 A cylindrical housing portion connected to a gate-type valve installed in a branch pipe of a perforated pipe, with an open bottom surface and a closed top surface; a lifting portion installed parallel to the central axis of the cylindrical housing portion and moving up and down along the central axis relative to the top surface; a rotary drive portion that moves together with the lifting portion and rotates with the central axis of the lifting portion as the rotation axis, with one end exposed to the upper surface of the lifting portion and the other end exposed to the lower surface of the lifting portion; and a coating portion connected to the other end of the rotary drive portion and applying an underwater coating liquid supplied while moving along the exposed surface of the perforation by the rotation of the rotary drive portion to the exposed surface. The present invention relates to a non-stop rust prevention method using a non-stop coating device for coating a perforated portion of a pipe, characterized by comprising: a supply nozzle connected to a supply means for supplying an underwater coating liquid to supply an underwater coating liquid to the coating portion, and supplying the underwater coating liquid so that the underwater coating liquid can be applied to the exposed surface of the perforation by the coating portion, and a supply line portion connected to the supply means and having an inlet for injecting the underwater coating liquid. The method comprises: a non-stop coating device installation step (S10) of installing the non-stop coating device on the gate-type valve in a closed state; a gate-type valve opening step (S20) of opening the gate-type valve after the installation of the non-stop coating device is completed; a lifting unit lowering step (S30) of lowering the lifting unit of the non-stop coating device to move the coating portion to a position in contact with the perforation of the pipe when the gate-type valve is fully opened; and, in order to coat the perforation using the coating portion in contact with the perforation of the pipe, receiving the underwater coating liquid supplied by the supply means through the supply line portion, and the coating portion to the perforation A rotary drive unit driving step (S40) for driving the rotary drive unit to move along; and a coating unit return step (S50) for blocking the supply of the underwater coating liquid and raising the lifting unit to return the coating unit when the formation of the coating layer on the perforation of the pipe is completed through the rotary drive unit driving step (S40);A gate-type valve closing step (S60) for closing the gate-type valve opened in the gate-type valve opening step (S20) above; The method is characterized by including a non-stop coating device removal step (S70) for removing the non-stop coating device from the gate-type valve when the gate-type valve is completely closed in the gate-type valve closing step (S60), wherein the coating part is a roller-type coating part comprising two rods spaced 180 degrees apart or four rods spaced 90 degrees apart, wherein one end of the coating part is coupled to the other end of the rotary drive part so as to be rotatable up and down, and includes a rod having an extension function and a coating roller coupled to the other end of the rod and rotating in contact with the exposed surface of the hole; and the coating roller is composed of an intermediate roller in contact with the exposed surface of the hole, an upper roller in contact with the outer diameter surface of the pipe connected to the exposed surface, and a lower roller in contact with the inner diameter surface of the pipe connected to the exposed surface; and the supply line part is composed of two supply nozzles positioned between the intermediate roller and the upper roller and between the intermediate roller and the lower roller of the coating roller, respectively; and the underwater coating liquid is A non-disruptive anti-corrosion method using a non-disruptive coating device characterized by being one selected from aqua epoxy paint, underwater curing polyurethane paint, acrylic paint, silicone paint, and phosphate-based anti-corrosion paint. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 A non-stop rust prevention method using a non-stop coating device, characterized in that, in claim 1, the supply line portion comprises an inlet installed in the lifting portion and exposed to the upper part, a supply pipe connected to the inlet and exposed to the cylindrical housing portion through the interior of the lifting portion, and a soft connecting pipe connecting the supply pipe and the supply nozzle. Claim 7 A non-stop anti-corrosion method using a non-stop coating device, characterized in that, in claim 1, the cylindrical housing part further includes a monitoring window that allows the interior of the cylindrical housing part to be visually inspected from the outside.

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