KR102043311B1 - nonexcavating curing system of water pipe with alternating steam supply and curing method - Google Patents

Abstract

Disclosed is a non-excavation water supply and drainage repairing system. The purpose of the present invention is to minimize the generation of condensed water in non-excavation water supply and drainage repairing construction. The disclosed non-excavation water supply and drainage repairing system includes: a steam generator (10) generating steam by heating water; a fluid distributor (11) supplying steam supplied from the steam generator (10) to a liner; the liner containing a thermosetting resin; a first manifold (110) and a second manifold (210), having a steam inlet (111, 211), a steam outlet (112, 212), and a condensed water discharge unit (113, 213) and connected to both sides of the liner; a first fluid supply pipe (100) in which one end is connected to the fluid distributor (11) and the other end is connected to the steam inlet (111) of the first manifold (110) connected to one side of the liner; a second fluid supply pipe (200) in which one end is connected to the fluid distributor (11) and the other end is connected to the steam inlet (211) of the second manifold (210) connected to the other side of the liner; a first valve (101) opening and closing the flow of the first fluid supply pipe (100); a second valve (201) opening and closing the inflow of the second fluid supply pipe (200); and a controller (12) controlling opening and closing of the first valve (101) and the second valve (201).

Description

Nonexcavating curing system of water pipe with alternating steam supply and curing method

The present invention relates to a non-excavated water supply and sewage repair system and a repair method of the alternating steam supply method, and more particularly, by supplying steam from both sides of the liner used for water and sewage repair to cure the liner, by alternating steam from both sides of the liner The present invention relates to a non-excavated water supply and sewage repair system and a repairing method using an alternate steam supply method to reduce temperature deviation along the length of the liner to obtain uniform curing speed and quality over the entire liner.

With urbanization, various pipes such as water and sewage pipes and gas pipes are buried underground, and these pipes gradually age and become corroded.

Corrosion of pipes causes leakage of water and sewage, pollution of drinking water, and gas leaks.

Excavation works to repair water and sewage pipes or gas pipes buried underground cause social costs such as huge construction costs, heavy traffic, safety accidents, and environmental problems. As a result, non-excavated water and sewage repair methods began to be developed.

In particular, in Korea, the road is narrow and there are many bends, and there are many connection parts of branch facilities such as branch pipe connections and manholes. In addition, since the depth of embedding of the pipe is deep, the working environment is poor, and thus, the additional cost used for removing obstacles is high. For this reason, non-excavation pipe repair method is advantageous in the field because there is an advantage.

Non-drillable water and sewage repairs include slip lining, close fit pipes lining, fold and form lining, spiraly wound pipes lining, and cured in place pipe. ).

Among these, the reinforcing tube hardening method is recently attracting the most attention due to the convenience of construction, and various technologies are being developed in various countries around the world.

Steam is typically fed into the liner to cure the reinforcement tube, called a liner. At this time, the steam supplied to one side of the liner flows along the liner, and gradually decreases in temperature, and condenses and accumulates at the bottom when reaching the outlet of the other side of the liner.

The condensate thus formed is a factor that delays the curing time of the liner and delays the construction time. In addition, locally generated condensate can cause safety problems due to uneven construction quality of the liner.

Therefore, in the non-excavated water and sewage repair work, there is an urgent need to develop a new repair system and repair method that can minimize the generation of condensate over the entire section of the liner and prevent the delay of construction time due to condensate generation.

Japanese Laid-Open Patent Publication No. 2002-303376

The present invention has been proposed to solve the above problems, and aims to minimize the generation of condensate in the unexcavated water and sewage repair work.

It is another object of the present invention to make the temperature distribution uniform throughout the liner.

In addition, an object of the present invention is to shorten the construction time of non-excavated water and sewage repair work.

 The present invention is a steam generator for generating steam by applying heat to water;

A fluid distributor for supplying steam supplied from the steam generator to a liner;

A liner formed including a thermosetting resin;

First and second manifolds coupled to both sides of the liner and having a steam inlet, a steam outlet, and a condensate outlet;

A first fluid supply pipe having one end coupled to the fluid distributor and the other end coupled to a steam inlet of the first manifold coupled to one side of the liner;

A second fluid supply pipe having one end coupled to the fluid distributor and the other end coupled to a steam inlet of a second manifold coupled to the other side of the liner;

A first valve for opening and closing the flow of the first fluid supply pipe;

A second valve for opening and closing the flow of the second fluid supply pipe; And

It provides a non-excavated water and sewage repair system, including; a controller for controlling the opening and closing of the first valve and the second valve.

In addition, the controller of the present invention is characterized in that for closing the second valve when opening the first valve, and closing the first valve when opening the second valve.

In addition, the controller of the present invention is characterized by reducing the temperature deviation along the longitudinal direction of the liner by alternately repeating the opening of the first valve and the opening of the second valve.

In another aspect, the present invention, the first temperature sensor is mounted inside the first manifold to measure the temperature of the steam; And

And a second temperature sensor mounted inside the second manifold to measure a temperature of steam.

The controller may be configured such that when the temperature deviation between the second temperature measured by the second temperature sensor and the first temperature measured by the first temperature sensor reaches a preset reference temperature deviation when the first valve is opened. To close the valve and open the second valve,

The second valve is closed when the temperature deviation between the first temperature measured by the first temperature sensor and the second temperature measured by the second temperature sensor reaches a preset reference temperature deviation when the second valve is opened. And controlling to open the first valve.

In addition, the size expansion of the hole of the present invention is characterized in that the winding roller is controlled by the tension acting on the coating layer.

In addition, the present invention in the non-excavated water and sewage repair method using the non-excavated water and sewage repair system,

Checking a repair section in the pipe and analyzing the repair section;

Inserting a liner into the repair section;

Coupling the first manifold and the second manifold to one side and the other side of the liner, respectively;

Coupling a first fluid supply pipe and the first valve, a second fluid supply pipe and the second valve between the fluid distributor and the liner;

And supplying steam generated by the steam generator to the liner through a fluid distributor to cure the liner.

Curing the liner,

The controller closes the second valve when the first valve is opened, and closes the first valve when the second valve is opened, by alternately repeating the opening of the first valve and the opening of the second valve. It provides a non-excavated water and sewage repair method, characterized in that to reduce the temperature deviation along the longitudinal direction of the liner.

In addition, the present invention, in the non-excavated water and sewage repair method using a non-excavated water and sewage repair system,

Checking a repair section in the pipe and analyzing the repair section;

Inserting a liner into the repair section;

Coupling the first manifold and the second manifold to one side and the other side of the liner, respectively;

Coupling a first fluid supply pipe and the first valve, a second fluid supply pipe and the second valve between the fluid distributor and the liner;

And supplying steam generated by the steam generator to the liner through a fluid distributor to cure the liner.

Curing the liner,

When the controller reaches a predetermined reference temperature deviation when a temperature deviation between the second temperature measured by the second temperature sensor and the first temperature measured by the first temperature sensor when the first valve is opened. To close the valve and open the second valve,

The second valve is closed when the temperature deviation between the first temperature measured by the first temperature sensor and the second temperature measured by the second temperature sensor reaches a preset reference temperature deviation when the second valve is opened. And control to open the first valve,

By alternately repeating the opening of the first valve and the opening of the second valve provides a non-excavated water and sewage repair method, characterized in that to reduce the temperature deviation along the longitudinal direction of the liner.

The present invention has the effect that the construction time is reduced by minimizing the generation of condensate in non-excavation repair work.

In addition, the present invention has the effect of obtaining a uniform construction quality over the entire section of the liner during non-excavation repair work.

In addition to the effects described above, the specific effects of the present invention will be described together with the following description of specifics for carrying out the invention.

1 is a perspective view of a pipe constructed by the non-excavated water and sewage repair method according to the present invention.
FIG. 2 is a cross-sectional view of the pipe of FIG. 1 taken along line II-II '. FIG.
3 is a view showing the configuration of a non-excavated water and sewage repair system according to the present invention.
4 is a cross-sectional view of a manifold according to the present invention.
5 is a flowchart of a non-excavation water and sewage repair method according to the present invention.
6 is a view showing the temperature distribution in the steady state of the liner to which the repair method according to the present invention is applied.

Hereinafter, various embodiments of the present disclosure will be described with reference to the accompanying drawings. However, this is not intended to limit the techniques described in this document to specific embodiments, but should be understood to cover various modifications, equivalents, and / or alternatives to the embodiments of this document. In connection with the description of the drawings, similar reference numerals may be used for similar components.

In addition, the expressions "first," "second," and the like used in this document may modify various components in any order and / or importance, and may distinguish one component from another. Used only and do not limit the components. For example, the 'first part' and the 'second part' may indicate different parts regardless of the order or importance. For example, without departing from the scope of rights described in this document, the first component may be called a second component, and similarly, the second component may be renamed to the first component.

Also, the terminology used herein is for the purpose of describing particular embodiments only and may not be intended to limit the scope of other embodiments. Singular expressions may include plural expressions unless the context clearly indicates otherwise. The terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by one of ordinary skill in the art. Among the terms used in this document, terms defined in the general dictionary may be interpreted as having the same or similar meaning as the meaning in the context of the related art, and ideally or excessively formal meanings are not clearly defined in this document. Not interpreted as In some cases, even if terms are defined in the specification, they may not be interpreted to exclude embodiments of the present disclosure.

1 is a perspective view of a pipe constructed by the non-excavated water and sewage repair method according to the present invention, Figure 2 is a cross-sectional view taken along the line II-II 'of FIG.

It demonstrates with reference to FIG. 1 and FIG.

In the non-excavated water and sewage repair method applied to the present invention, a liner including a non-woven fabric impregnated with a resin is inserted into a pipe 20 to be repaired, and then cured, and the inside of the pipe 20 is liner. It is a method of repairing the damaged pipe 20 by reinforcing with (L).

The diameter of the pipe 20 used in the non-excavated water and sewage repair method applied to the present invention is preferably 150 to 1500 millimeters. However, the present invention is not limited thereto, and pipes of various diameters may be applied depending on the design environment.

The liner L is inserted into the damaged inner surface of the pipe 20. The liner L serves to prevent a fluid such as sewage, water, and gas in the pipe 20 from flowing out through the damaged portion 25 of the pipe 20 and to prevent foreign substances from flowing into the pipe 20. Do it. The liner L includes a nonwoven fabric P impregnated with a resin and a vinyl C surrounding the outside of the nonwoven fabric P. FIG. Thereafter, the liquid resin is impregnated into the nonwoven fabric P folded in two layers. After covering the vinyl (C) to the outside of the non-woven fabric (P) impregnated with resin and inserted into the pipe 20, the resin is cured to form an inner tube of the pipe 20 shape.

Vinyl (C) is a cover surrounding the nonwoven fabric (P) when the air is filled in the nonwoven fabric (P) to expand the nonwoven fabric (P). That is, the cover surrounding the nonwoven fabric P is not limited to vinyl C, and various materials such as polypropylene and polystyrene, which may be used as a coating material of the nonwoven fabric P, may be used. In particular, a cover formed of a heat insulating material may be used so that the resin can be cured even under extremely low temperature conditions depending on the construction environment.

Figure 3 is a view showing the configuration of a non-excavated water and sewage repair system according to the present invention, Figure 4 is a cross-sectional view of the manifold according to the present invention, Figure 5 is a temperature at a steady state of the liner to which the repair method according to the present invention is applied 6 is a flowchart illustrating a distribution, and FIG. 6 is a flowchart of a non-excavation water and sewage repair method according to the present invention.

This will be described with reference to FIGS. 3 to 6.

The non-excavated water and sewage repair system according to the present invention includes a steam generator 10, a fluid distributor 11, a liner, a first manifold 110, a second manifold 210, a first fluid supply pipe 100, and a second It includes a fluid supply pipe 200, the first valve 101, the second valve 201, the controller 12.

Steam generator 10 is a configuration for generating steam by applying heat to the water, a conventional boiler may be adopted, but is not limited to this, it is possible to select a variety of devices.

The fluid distributor 11 is configured to supply steam supplied from the steam generator 10 to the liner.

The non-excavated water and sewage repair system according to the present invention supplies steam from both sides of the liner, so that two fluid supply pipes are connected in the fluid distributor 11, but the number of fluid supply pipes can be changed according to a design situation.

The liner is formed of a thermosetting resin and is cured and bonded to the inner wall surface of the pipe to be repaired by heat transferred by steam.

The first and second manifolds 210 are respectively coupled to both sides of the liner to block leakage of steam.

The first and second manifolds 210 are provided with steam inlets 211, steam outlets 212, and condensate outlets 113 and 213.

One end of the first fluid supply pipe 100 is coupled to the fluid distributor 11 and the other end is coupled to the steam inlet 111 of the first manifold 110 coupled to one side of the liner.

One end of the second fluid supply pipe 200 is coupled to the fluid distributor 11 and the other end is coupled to the steam inlet 211 of the second manifold 210 coupled to the other side of the liner.

The first valve 101 is configured to open and close the flow of the first fluid supply pipe 100, may be coupled to the middle of the first fluid supply pipe 100, or may be coupled to the first manifold 110. The installation position of the first valve 101 may be variously modified.

The second valve 201 is configured to open and close the flow of the second fluid supply pipe 200.

The controller 12 controls the opening and closing of the first valve 101 and the second valve 201.

In the conventional water and sewage repair system, since steam is supplied to one side of the liner, condensed water is generated near the other side of the liner from which steam is discharged, thereby causing a delay in curing of the liner.

In other words, when steam is supplied from only one side of the liner according to the conventional method, the temperature distribution is the highest at the supply side and the temperature is gradually lowered along the longitudinal direction, so that the temperature is lowest at the discharge side. As such, the temperature gradient is large and condensate is always generated on the discharge side, and the problem that the curing of the liner is also delayed could not be overcome.

Accordingly, in the present invention, the steam is supplied from both sides of the liner, but the steam supply side is alternately changed, that is, the steam is supplied in an alternating manner.

Therefore, the controller 12 closes the second valve 201 when the first valve 101 is opened, and closes the first valve 101 when the second valve 201 is opened.

When the first valve 101 is opened and the second valve 201 is closed, steam is supplied through the steam outlet 212 of the second manifold 210 while steam is supplied through the first valve 101 to thereby work. Steam flows in a direction.

At this time, the temperature is the highest on the first valve 101 side and the temperature gradually decreases along the longitudinal direction, so that the temperature is lowest on the second valve 201 side, which is the discharge side.

Subsequently, when the second valve 201 is opened and the first valve 101 is closed, steam is supplied through the steam outlet 112 of the first manifold 110 while steam is supplied through the second valve 201. Steam flows in one direction.

In this case, since high temperature steam is discharged through the steam outlets 112 and 212 on the first valve 101 side, the temperature of the first valve 101 side is lowered. The second valve 201 side is supplied with steam to increase the temperature, and gradually decreases the temperature along the longitudinal direction. When the steam supplied from the second valve 201 reaches the first valve 101 side, the temperature of the first valve 101 side gradually increases.

As such, when the direction in which steam is supplied is changed, the temperature gradients formed from the supply side to the discharge side cancel each other to form a uniform temperature distribution along the longitudinal direction of the liner. This minimizes the generation of condensate inside the liner and makes the curing state uniform.

Figure 5 shows the temperature distribution in the steady state (steady state) of the liner to which the alternating non-excavation repair method according to the present invention is applied.

The first manifold 110 and the second manifold 210 according to the present invention may be provided with a first temperature sensor 114 and a second temperature sensor 214, respectively.

In order to effectively set the cycle for changing the steam supply direction, a temperature sensor was installed in the manifold, and the steam supply direction was changed when the temperature deviation between the steam supply side and the steam discharge side reached a preset reference temperature deviation. .

The controller 12 presets a temperature deviation between the second temperature measured by the second temperature sensor 214 and the first temperature measured by the first temperature sensor 114 when the first valve 101 is opened. When the reference temperature deviation is reached, the first valve 101 is closed and the second valve 201 is controlled to be opened, and the first temperature sensor 114 is opened when the second valve 201 is opened. When the temperature deviation between the measured first temperature and the second temperature measured by the second temperature sensor 214 reaches a preset reference temperature deviation, the second valve 201 is closed and the first valve 101 is closed. Control to open.

The first manifold 110 and the second manifold 210 according to the present invention may be provided with a first pressure gauge and a second pressure gauge, respectively.

The temperature measured by the first thermometer and the second thermometer, respectively, and the pressure measured by the first and second manometers, respectively, can be transmitted to the controller 12. The temperature and pressure transmitted to the controller 12 are displayed via a display window, whereby the controller 12 may monitor the pressure and temperature inside the liner.

It describes a non-excavated water and sewage repair method according to the present invention.

First, check the repair section in the pipe and analyze it.

Next, insert the liner into the repair section.

In order to close both sides of the liner, the first manifold 110 and the second manifold 210 are coupled to one side and the other side of the liner, respectively.

In order to secure a steam supply flow path, the first fluid supply pipe 100 and the first valve 101, the second fluid supply pipe 200, and the second valve 201 are coupled between the fluid distributor 11 and the liner. do.

Steam generated by the steam generator 10 is supplied to the liner through the fluid distributor 11 to cure the liner.

At this time, the step of curing the liner,

When the controller 12 opens the first valve 101, the temperature deviation between the second temperature measured by the second temperature sensor 214 and the first temperature measured by the first temperature sensor 114 is preset. Controlling to close the first valve 101 and open the second valve 201 when a reference temperature deviation is reached,

When the second valve 201 is opened, a temperature deviation between the first temperature measured by the first temperature sensor 114 and the second temperature measured by the second temperature sensor 214 is set to a preset reference temperature deviation. When reaching, the second valve 201 is closed and the first valve 101 is controlled to open.

The present invention relates to a non-excavated water supply and sewage repair system and a repair method using an alternating steam supply method, wherein steam is supplied from both sides of the liner used for water and sewage repair to cure the liner, and the steam is alternately supplied from both sides of the liner. By reducing the temperature deviation along the longitudinal direction it is effective to obtain a uniform curing speed and quality over the entire liner section.

While the above has been shown and described with respect to preferred embodiments of the present invention, the present invention is not limited to the specific embodiments described above, it is usually in the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

20 piping
25 breakage
P nonwoven
C vinyl
L liner
10 Steam Generator
11 Fluid Dispenser
12 controller
100 1st fluid supply line
101 first valve
110 first manifold
111 steam inlet
112 steam outlet
113 Condensate outlet
114 first temperature sensor
200 Second Fluid Supply Pipe
201 second valve
210 second manifold
211 Steam Inlet
212 steam outlet
213 Condensate outlet
214 2nd temperature sensor
Checking and analyzing the repair section in S10 pipe
Inserting the liner into the S20 repair section
S30 coupling the first manifold 110 and the second manifold 210 to one side and the other side of the liner, respectively
S40 coupling the first fluid supply pipe 100 and the first valve 101, the second fluid supply pipe 200, and the second valve 201 between the fluid distributor 11 and the liner.
Supplying steam generated in the S50 steam generator 10 to the liner through the fluid distributor 11 to cure the liner

Claims (6)

Steam generator 10 for generating steam by applying heat to the water;
A fluid distributor (11) for supplying steam supplied from the steam generator (10) to a liner;
A liner formed including a thermosetting resin;
A first manifold 110 and a second manifold 210 coupled to both sides of the liner and having steam inlets 111 and 211, steam outlets 112 and 212, and condensate outlets 113 and 213 formed therein;
A first temperature sensor 114 mounted inside the first manifold 110 to measure a temperature of steam;
A second temperature sensor 214 mounted inside the second manifold 210 to measure a temperature of steam;
A first fluid supply pipe 100 having one end coupled to the fluid distributor 11 and the other end coupled to a steam inlet 111 of the first manifold 110 coupled to one side of the liner;
A second fluid supply pipe 200 having one end coupled to the fluid distributor 11 and the other end coupled to a steam inlet 211 of the second manifold 210 coupled to the other side of the liner;
A first valve 101 for opening and closing the flow of the first fluid supply pipe 100;
A second valve 201 for opening and closing the flow of the second fluid supply pipe 200; And
And a controller 12 that controls opening and closing of the first valve 101 and the second valve 201.
The controller 12 closes the second valve 201 when the first valve 101 is opened, closes the first valve 101 when the second valve 201 is opened,
The controller 12 reduces the temperature deviation along the longitudinal direction of the liner by alternately repeating the opening of the first valve 101 and the opening of the second valve 201, non-excavated water and sewage repair system.
delete delete delete In the non-excavated water and sewage repair method using the non-excavated water and sewage repair system of claim 1,
Checking the repair section in the pipe and analyzing it (S10);
Inserting a liner into the repair section (S20);
Coupling the first manifold (110) and the second manifold (210) to one side and the other side of the liner, respectively (S30);
Coupling the first fluid supply pipe (100) and the first valve (101), the second fluid supply pipe (200) and the second valve (201) between the fluid distributor (11) and the liner (S40);
And supplying steam generated by the steam generator 10 to the liner through the fluid distributor 11 to cure the liner (S50).
Curing the liner,
The controller 12 closes the second valve 201 when the first valve 101 is opened, and closes the first valve 101 when the second valve 201 is opened. Non-excavation water and sewage repair method, characterized in that to reduce the temperature deviation along the longitudinal direction of the liner by alternately repeating the opening of the valve 101 and the opening of the second valve 201.
delete

Images