KR20070022622A - Method of improving inner surface of piping system - Google Patents

Abstract

The present invention is an installation pipe processing method for processing the inside of the pipe without dismantling already installed, the scale and rust, etc. formed on the inside of the old pipe peeled off using the explosive force of the gunpowder, epoxy or acrylic or polyethylene on the inner surface of the pipe As a method of forming and recovering a coating film by supplying a coating material of (PE) -based material to the inside of the pipe, it may be used as an old pipe rehabilitation method in which an old pipe is rebuilt like a fuse.

Therefore, it is not necessary to put a separate equipment to remove the scale or apply a coating agent inside the pipe, so it can be applied to a pipe having a small diameter, and the pipe can be used as it is without damaging the concrete structure of the building.

Piping, Descaling, Paint, Gunpowder

Description

Process of installing piping {Method of improving inner surface of piping system}

1 is a general plumbing diagram inside a building

2 is a scaled and rusted pipe cross section inside the pipe;

Figure 3 is a schematic diagram of the operation of filling the plastic drop inside the tube

Figure 4 is an example of a cross-sectional view of the pipe filled with a vinyl drop inside the pipe

Figure 5 is a cross-sectional view of vinyl gunpowder

6 is a schematic view of washing the scale and rust inside the tube

7 is a schematic view of filling the coating agent inside the tube

8 is a schematic view showing the operation of recovering the coating agent filled in the tube;

9 is a schematic view of curing the coating film

10 is a cross-sectional view of the pipe after completing the operation

11 is a cross-sectional view of the pipe after rehabilitation.

[Description of Symbols for Main Parts of Drawing]

11: faucet 12: plumbing

13: water meter 23: drain valve

25: faucet 41: coating agent

51: coating agent recovery device 52: coating agent recovery aid

61 coating film curing device 62 coating film curing auxiliary device

72: coating agent

The present invention relates to an installation pipe processing method for processing the inside of the pipe without dismantling already installed, and peeled off the scale and rust, etc. formed inside the old pipe with the explosive force of the gunpowder epoxy or acrylic or polyethylene (PE) -based By supplying the coating material of the material to the inside of the tube to form and recover the coating film, the old pipe is rebuilt like a fuse.

The old pipes need to be treated to remove scales and rust, and to coat the coating material to prevent rust and to have corrosion resistance.

In the existing rehabilitation method for rehabilitation of old pipes, first, a part of the pipe is cut and the water inside the pipe is drained, and then special parts such as an iron brush or a pig are used to measure scale and rust inside the pipe. Remove Then, after drying the surface with hot compressed air, a coating agent such as epoxy is sprayed into the sprayer, followed by curing with hot air.

However, in this case, there is a problem in that the curved portion of the pipe or the small diameter pipe having a small diameter cannot insert a part or equipment necessary for the above work into the pipe and perform the work. And, in the case of the building, depending on the structure to break the structure and replace the piping, but there are many cases that can not be broken. Therefore, the situation in which the rust inside the tube is melted by an electric method or the like and washed with high pressure water and used as it is being studied.

However, the electrical method takes time from several months to several years, and the method of washing with high pressure water does not properly remove scale or rust in the pipe, and scale and rust are formed on the inner wall of the pipe again.

As described above, an object of the present invention is to provide an installation pipe processing method that can be applied to small diameter pipes and curved pipes, unlike the existing pipe processing method, for example, the old pipe washing and rehabilitation method.

It is another object of the present invention to provide an economical installation piping processing method that can be used without renovation without taking time, such as an electric method, and in particular, without damaging an existing building.

The method of the present invention for achieving the above object

In the method of processing the installation pipe, it is characterized in that a gunpowder is installed inside the installed pipe, and the explosive is exploded to separate the debris inside the pipe from the inner wall of the pipe.

The present invention as described above may comprise the step of filling the gunpowder inside the pipe, exploding the gunpowder inside the pipe, removing the residue separated from the inner wall of the pipe by the explosion from the pipe.

On the other hand, the step of removing the debris after the step of removing the water inside the pipe, applying a coating film to the inside of the pipe, curing the coating film applied to the inside of the pipe is further provided as an installation piping processing method A set of old tube rehabilitation methods may be implemented.

At this time, it is preferable that a very small amount of the gunpowder installed in the pipe is distributed throughout the pipe so that the explosive force does not explode the pipe itself. As one of the methods, the gunpowder may be a vinyl gunpowder formed by putting explosives and air necessary for explosion in a vinyl drop or the like.

In addition, the vinyl gunpowder may be filled in the entire pipe by using the flow rate of the tap water is supplied to the existing, or by using a separate high-pressure air instead of the tap water in a state in which the tap water supply is blocked.

A method of forming a vinyl gunpowder, such as a porous styrofoam packing material, to mix some of the gunpowder when injecting air into the resin. As you can see, you can consider how to cut.

This batch of vinyl gunpowder is made to allow a series of explosions in quantity and dispersion. The vinyl gunpowder may be distributed in the piping with water or may be distributed with air. The scale and the like can be separated from the inner wall of the pipe by water shock pressure or pneumatic pressure applied to the water during explosion or to the surrounding air.

Hereinafter, the present invention will be described in more detail with reference to the following examples.

First, one embodiment will be described below.

-To secure the working space on the pipe, remove part of the pipe and install the equipment necessary for rehabilitation.

-Fill the inside of the pipe to be rebuilt.

-Explode vinyl gunpowder using an electric primer.

-Removes scale and rust, etc. due to explosive force and water shock by explosive force.

-Connect the pipes and receive the water from the faucet and repeat the above operation until it meets the water quality standards.

-Remove moisture from the inner surface of the pipe.

-Fill the coating material inside the pipe and apply pressure so that it is evenly adsorbed on the inside surface of the pipe.

-Retain only a certain thickness of coating and recover it before curing.

-Allow the coating agent to cure while adsorbing evenly on the surface of the tube.

-Check the state of curing and connect the separated pipe to send water.

-Check the quantity coming from the faucet to see if it is clogged.

-Finish the work after judging suitability by water quality test.

The above has been outlined the entire contents of the work related to the present invention, the present invention can be applied to all non-corrosive pipes rusted aging, but the construction of rehabilitation of small diameter water supply pipe installed inside the building of the present invention As a representative example, the present invention will be described in more detail with reference to the detailed work contents of the 'installation pipe processing method'.

FIG. 1 is a standard piping diagram inside a general building before starting the work, and the pipe 12 is branched by each household or floor after the main water meter 13 in the meter protection container 14 to the faucet 11 where the actual water comes out. The connected state is shown, and FIG. 2: shows sectional drawing of the piping in which the rust and the scale 15 etc. were pinched in the aged piping 12.

FIG. 3 is a schematic view showing the operation of filling the vinyl drop material 22 inside the pipe 12 using the vinyl drop material filling device 21 equipped with various components and pipes necessary for a necessary operation such as a hydraulic pressure reducing valve and a dilution valve. , After removing the water meter (13), connect the vinyl drop powder filling device (21) with a high pressure hose (28), install a faucet (25) to check the inside of the pipe instead of the faucet (11), Figure 4 is a vinyl A cross-sectional view of a portion of the pipe 12 filled with the explosives 22, Figure 5 is a cross-sectional view of the vinyl drop 22, 22a is a plastic drop, 22b is a air in the plastic droplets, Reference numeral 22c denotes a gunpowder.

In order to regenerate the old pipe and use it again, the scale 15 and rust inside the pipe 12 must first be removed from the surface of the pipe 12 and then coated with a coating film to prevent the scale 15 or rust from regenerating. In order to separate scale 15 and rust, etc. from inside the pipe 12, on the surface of the pipe 12, the vinyl 12 powder 22 is exploded inside the pipe 12 to explode. (12) It is one of the characteristics of this invention to use the water shock of internal water,

As a method for filling gunpowder in the pipe 12, first, a vinyl drop 22a is made of vinyl or the like, and an appropriate amount of gunpowder 22c and air 22b are put in a drop, called a vinyl drop gun 22. The device for filling the inside of the pipe (12) by using the flow rate and water pressure of the tap water supplied with the vinyl drop powder (22) is called a vinyl drop powder filling device (21). Various necessary parts such as valves and piping are connected, and if the water pressure is low, it can be pressurized. Details of the work are as follows.

1) Dismantle the water meter 13 and install a drain valve 23 on the building side pipe 12 to drain the water inside the pipe, fill the vinyl drop 22, or install a primer. And, it is connected to the vinyl drop discharge valve 27 and the high-pressure hose (28) of the vinyl drop charge filling device (21).

2) It is connected to the high pressure hose 28 or the like so that water can be supplied from the inlet pipe 26 of the ground into which the water enters the water meter.

3) Using the pressure reducing valve, adjust the water pressure on the inlet pipe 26 side of the ground that enters the vinyl drop filler 21.

4) Filling the vinyl powder (22) to the vinyl gunpowder (21).

5) The existing faucet 11 is installed by replacing the faucet 25 with a transparent tube 24 which can check the inside of the tube without the dropping of the vinyl powder 22.

6) Open the discharge valve 27 of the vinyl gunpowder filling device 21 and fill the vinyl gunpowder 22 inside the pipe 12 by using the flow rate of the tap water supplied.

* If it is difficult to use tap water, it can be filled with high pressure air.

7) Check that the droplets 22 are filled inside the pipe 12 with the transparent tube 24 of the entire faucet 25 and close the vinyl discharge valve 27.

* If only explosive power of the gunpowder is used, the drain valve 23 may be opened to drain the water in the pipe 12.

8) After inserting the primer into the faucet (25) and the drain valve (23) to explode the vinyl gunpowder (22). At this time, when the air necessary for the explosion is insufficient to the air 22b in the vinyl powder 22 to supply the high-pressure air separately.

6 is a view connecting the pressurization device 31 after removing the vinyl drop powder filling device 21 when the water pressure is insufficient to wash the scale and rust, etc. separated by the above operation.

1) Connect the high pressure hose 28 to the left and right connection parts of the pressurization device 31.

2) The pressurization device 31 is operated with high pressure water to remove the separated scale 15 and the rust in the pipe 12.

3) Repeat the above operations 1) and 2) to confirm that the water quality after removing the scale 15 is suitable, and then continue with the next operation.

FIG. 7 is a schematic diagram of an operation of injecting a high temperature air into the pipe 12 to completely remove moisture therein, and then injecting the coating agent 72. The coating film 72 should be coated on the surface of the pipe 12. However, due to the characteristics of the pipe 12 in the building structure having a small inner diameter and many curved portions, it is difficult to put any device inside the pipe. By coating the thin film 72, the liquid coating film 72 is recovered to the coating film 72 on the surface of the pipe 12 even after the liquid is filled into the pipe 12 using the coating material filling device 41. This is one of the main features of the present invention as a method of curing with high temperature air after injecting high-pressure air and evenly adhered to the surface of the pipe 12 to be evenly adhered to the surface of the pipe 12. (12) Details of work on the inner surface are as follows.

1) When removing the scale 15 and the rust in the pipe 12 in the above to remove the water remaining in the pipe 12 by blowing high pressure air.

2) Continue to blow high temperature and high pressure air to completely remove moisture inside the pipe (12) and measure the humidity.

3) After the coating agent filling device 41 is coupled to the drain valve 23, the coating agent 72 is filled into the pipe 12 at a high pressure.

4) When the coating material flows from each faucet 25, it locks a faucet.

5) Even after the faucet 25 is locked, the coating agent filling device 41 is operated until a constant pressure is applied so that the coating agent 72 is evenly adsorbed on the surface of the pipe 12.

* The above operation may fill the coating material 72 from the faucet 25, and may be applied evenly by applying a constant pressure once again after collecting the coating material 72.

8 is a schematic view showing the operation of recovering the coating agent 72 filled in the pipe 12 in the above, and the contents of the operation are as follows.

1) The coating film recovery device 51 is connected to the drain valve 23, and the coating film 72 filled in above is recovered.

2) The high-speed air is injected into the faucet 25 into the coating agent recovery aid 52, or the air inside the pipe 12 is sucked so that the coating agent 72 does not remain in the curved pipe part.

3) After closing the faucet 25, injecting high pressure air into the drain valve 23, open the faucet 25 one by one to check the amount of air discharged, the coating film 72 remaining inside the pipe 12 is connected to the pipe. The above operation is repeated to prevent the occurrence of water by closing. If it is determined to be clogged, inject the coating agent so that the blockage can be punctured.

FIG. 9 is a schematic view of the curing of the coating agent 72 such that the coating agent 72 remaining on the surface of the pipe 12 is adhered to the surface of the pipe 12 without peeling. same.

1) After confirming that the air discharged from the tap 25 is sufficient in the above operation, the coating film 72 is well cured by injecting warm air at an appropriate temperature into the film curing device 61.

2) When the pipe 12 is long, the temperature of the exhaust air can be measured, and the tap water can be injected with the tap air by using the film coating auxiliary support device 62.

3) Check the curing status after sufficient curing time has elapsed.

FIG. 10 is a view of water passing through the water meter 13, the faucet 11, and the like after the completion of the washing and rehabilitation work, and FIG. 11 is a coating film 72 inside the existing pipe 12. Represents a pipe cross-section formed, and after curing of the coating agent is performed as described above is performed.

1) Temporarily pass water to receive water from the faucet and perform a water test to check eligibility.

2) Remove all equipment and parts installed above.

3) Finish the work by restoring the water meter and faucet originally removed for the work.

The present invention can be applied to the case that it is difficult to replace the already installed pipe without damaging the structure or if it is uneconomical to replace the new pipe considering the remaining life of the building.

The present invention can be applied to any type of pipe in the building and can use the clear and clean water by renovating the old water pipe.

The present invention can be constructed without damaging the building, the air is short, the construction cost is very low, there is an effect that can reduce the loss as much as possible.

Claims (5)

Install gunpowder inside the installed pipe, And exploding the explosive to separate the debris inside the pipe from the inner wall. The method of claim 1, Filling the inside of the pipe with gunpowder, Exploding the powder inside the pipe; And removing the debris separated from the inner wall of the pipe by the explosion, from the pipe. The method of claim 2, After removing the residue Removing moisture in the pipe; Applying a coating agent to the inside of the pipe, Installation piping processing method comprising the step of curing the coating film applied to the inside of the pipe. The method according to claim 1 or 2, Wherein the gunpowder is a vinyl drop explosives formed by inserting explosives and air necessary for explosions such as vinyl drops explosives. The method of claim 2, Filling the gunpowder in the pipe Use the flow rate of the tap water being supplied, Installation piping processing method characterized in that the filling using the air of a separate high pressure in a state in which the tap water supply is blocked.

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