KR102275690B1 - Reversing apparatus For Pipeline Repair and Non-Excavation Pipeline Repair Method Using it - Google Patents

Abstract

The present invention relates to a reversing apparatus for repairing a pipeline and a non-excavation pipeline repair method using the same, which enhances hardening of an impregnated tube and inhibits generation of condensed water in repairing a pipeline, thereby enhancing constructability. The reversing apparatus for repairing a pipeline according to the present invention comprises an impregnated tube supplier, a steam generator, a steam supply hose, a reverse housing, and an air generation means, wherein steam is supplied to the leading end of the steam supply hose to be supplied evenly to the whole section of the impregnated tube, thereby enhancing hardening efficiency of the impregnated tube and accordingly improving constructability. In addition, in generating steam for hardening of the impregnated tube, water is heated primarily and then secondarily to generate high-temperature, dry steam, compared to conventional technology, thereby improving hardening efficiency by hardening the impregnated tube. Moreover, after water is heated primarily, an oxygen remover is introduced to decompose water molecules and remove oxygen, thereby producing high-temperature/high-pressure steam having decreasing water molecule weight. Therefore, after hardening, an amount of the condensed water produced decreases to prevent delamination of the impregnated tube due to the condensed water and avoid a process of removing the condensed water, thereby enhancing work efficiency.

Description

Reversing apparatus For Pipeline Repair and Non-Excavation Pipeline Repair Method Using it

The present invention relates to an inverting device for pipe repair that can improve the workability by suppressing the generation of condensate while increasing the hardenability of the impregnated tube during pipe repair, and a non-excavating pipe repair method using the same.

In general, old water and sewage pipes and industrial pipes (gas, electricity, communication, etc.) buried underground gradually deteriorate over time, and in the case of water and sewage pipes, corrosion occurs, resulting in a huge amount of water leaking and the inflow of rust. There was a problem of contamination of drinking water.

In particular, in the case of sewage pipelines, cracks occur, and sewage flows out of the pipeline, contaminating the soil as well as groundwater.

As a general method for repairing an aged pipeline as described above, a method of excavating the ground in which the pipeline is buried and replacing the old pipeline with a fuse or partially repairing it is applied.

However, this ground excavation method not only caused ground subsidence due to soil erosion after construction was completed, along with damage to the surrounding environment, but also caused traffic congestion and inconvenience to citizens in congested urban areas.

On the other hand, in recent years, a method of not excavating the ground has been used in order to solve the above problems.

In general, non-excavated pipe repair devices and methods are a method of fixing an impregnated tube formed of a waterproof coating layer or film layer and an adhesive resin impregnated felt layer to the inside of an aged buried pipe. Reinforcement tube is added to the inner wall of the buried pipe.

As an example, Korean Patent Registration No. 10-1254464 (hereinafter referred to as 'Patent Document 1') has been proposed.

The patent document 1 relates to a water and sewage non-excavated pipe repair apparatus in which a reinforcement tube mounted on a vehicle is inserted into the inside of the water supply and sewage pipe, and then the reinforcement tube is reversed and hardened, the inside of the housing so that one end of the reinforcement tube can be inserted therein. is hollow, a connection flange is formed on the upper part of the housing, a tube fixture is formed on the lower part to fix the end of the reinforcing tube upside down, and the middle part of the housing protrudes to the outside to form an air injection space inside The protrusion is integrally formed, and the air tube is formed to face the front surface of the air injection space so that the airtight member is formed to seal the inside of the housing while the air tube is expanded by injection of external air, and the protrusion 14 ), an air valve and a gauge are formed on one side of each to expand and contract the air tube, and an air inlet is formed on the upper part of the tube fixture to maintain the internal air pressure of the housing and the reinforcing tube, including a reversing device consist of.

(Patent Document 1) KR10-1776914 B1 Water and sewage non-excavated pipeline steam supply method and device

In Patent Document 1 described above, the inside of the housing is hollow so that the reinforcing tube can penetrate the inside of the housing, a connection flange is formed on the upper part, and the tube fixture is formed integrally on the lower part, so that the end of the reinforcing tube is attached to the tube fixture It is fixed upside down, and the connecting member connected to the vehicle is coupled to the connecting flange so that the reverse operation is performed along the inside of the reinforcing tube reversing device, and in particular, the hardening operation is performed by the hot water hose connected to the end of the reinforcing tube.

That is, the hot water from the hot water tank flows into the hot water hose to harden the reinforcing tube, but if the hot water flowing into the hot water hose is simply worked without direct contact with the reinforcing tube, the thermal efficiency is lowered and hardening is difficult. there was.

In order to solve the above problems, the inversion device for pipe repair and the non-excavation pipe repair method using the same according to the present invention connect the steam supply hose including the steam discharge hole when the impregnated tube is inverted for curing the impregnated tube, and then steam By supplying steam to the tip of the steam supply hose, steam is evenly supplied to all parts of the impregnated tube, thereby improving the curing efficiency of the impregnated tube and thereby increasing the workability. There is a purpose.

Another object of the present invention is that the air inlet when the impregnated tube is inverted and the position of discharging air when the impregnated tube is hardened are the same, so that the air is discharged even if the operator does not perform a separate operation for discharging the air in the impregnated tube. This is to improve convenience.

Another object of the present invention is to increase curing efficiency by generating high temperature, dry steam compared to the prior art by heating water first and second when generating steam for curing the impregnated tube to harden the impregnated tube.

Another object of the present invention is to reduce the molecular weight of water in high-temperature/high-pressure steam generated by first heating water and then adding an oxygen scavenger to decompose water molecules to remove oxygen, thereby reducing the amount of condensed water generated after curing. It is to increase the efficiency of the operation by omitting the lifting phenomenon of the impregnated tube and the operation for removing condensate.

Another object of the present invention is to form a carbon filter in the air supply/discharge part of the inverted housing so that the odor generated during curing of the impregnated tube impregnated with a thermosetting resin is not exposed to the outside.

The present invention connects the steam supply hose including the steam discharge hole when the impregnated tube is inverted for curing the impregnated tube, and then supplies steam to the tip of the steam supply hose to evenly supply steam to the entire area of the impregnated tube, thereby curing the impregnated tube. It is possible to improve the efficiency and thereby increase the workability.

In addition, since the location of the air inlet when the impregnated tube is inverted and the position of discharging air when the impregnated tube is hardened is the same, air is discharged even if the operator does not perform a separate operation for evacuating the air in the impregnated tube, thereby improving operator convenience. have.

In addition, when generating steam for curing the impregnated tube, water is heated over the first and second stages to generate high temperature and dry steam compared to the prior art to harden the impregnated tube, thereby increasing curing efficiency.

In addition, after heating water first, an oxygen scavenger is added to decompose water molecules to remove oxygen, thereby reducing the molecular weight of water in high-temperature/high-pressure steam generated after curing, resulting in a decrease in the amount of condensed water generated after curing and lifting of the impregnated tube by condensate And the operation for removing the condensate can be omitted to increase the efficiency of the operation.

In addition, it is a useful invention that can prevent odor generated during curing of the impregnated tube impregnated with a thermosetting resin from being exposed to the outside by forming a carbon filter in the air supply/discharge part of the inverted housing.

1 is a block diagram showing a non-excavated pipe repair apparatus according to the present invention.
Figure 2 is a block diagram showing a state in which the impregnated tube in Figure 1 is inverted.
Figure 3 is a flow chart for a non-excavated pipeline repair method according to the present invention.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

First, the impregnated tube supply unit 10 is a configuration in which the impregnated tube (T) is loaded as shown in FIGS. 1 to 2 , and a detailed description thereof will be omitted.

Next, the steam generating unit 20 is configured to generate steam to harden the impregnated tube (T) after placing the impregnated tube (T) loaded in the impregnated tube supply unit (10) in the damaged pipeline (1). .

The steam generator 20 heats water to a temperature of 100 to 110° C. and a pressure of 3 to 4 kg/f to form a preheating unit 21 that generates superheated steam to facilitate water decomposition, and the preheating A superheated steam moving pipe 22 for moving the superheated steam generated in the unit 21 to the heating unit 24 is configured.

An oxygen removal unit for introducing an oxygen scavenger, which is a cobalt oxide catalyst, to the superheated steam moving pipe 22 to remove oxygen contained in the superheated steam moving to the heating unit 24 through the superheated steam moving pipe 22 . (23) is constructed.

In addition, the heating unit 24 heats the superheated steam generated by the preheating unit 21 to a higher temperature and pressure than the preheating unit 21 , that is, a pressure of 30 to 40 kg/f, and a temperature of 121 to 135° C. This is a configuration for generating high-temperature/high-pressure steam.

In particular, the heating unit 24 is configured to generate high-temperature/high-pressure steam with reduced moisture content by supplying superheated steam with reduced moisture content by removing oxygen in water molecules from the superheated steam in the superheated steam transfer pipe 22. .

Next, the steam supply hose 30 is connected to the above-described steam generator 20 to receive steam and spray it on the impregnated tube (T) to harden the impregnated tube (T).

The steam supply hose 30 has one end coupled to the end of the impregnated tube (T) when the impregnated tube (T) is inverted and moves with the inversion of the impregnated tube (T), and the overall shape is flat. , has a structure in which a plurality of steam discharge holes 31 are formed on the surface.

The steam supply hose 30 maintains a flat shape when steam is not supplied, and expands when steam is supplied by the steam generator 20 to spray steam to the impregnated tube T through the steam discharge hole 31. is composed

Next, the inversion housing 40 forms an inlet 41 at the upper end to receive the impregnated tube T through the impregnated tube supply unit 10, and inverts the impregnated tube T to the outside of the lower end. The impregnated tube coupling part 42 for coupling is formed, and an air supply/discharge part 43 is formed on one side.

In addition, a steam cap 44 for blocking the inlet 41 is configured.

Next, the air generating means 50 is configured to generate compressed air, and is configured to be used by being connected to the air supply/discharge part 43 of the inversion housing 40 .

On the other hand, in the present invention, the carbon filter 60 for removing the odor generated when the impregnated tube (T) is cured at the end of the impregnated tube (T) disposed in the conduit (1) may be further included.

Looking at the non-excavating pipeline repair method using the inverting device for pipeline repair according to the present invention having the configuration as described above.

First, in order to perform non-excavated pipeline repair work, inspection, cleaning, and repair work of the damaged pipeline (1) should be preceded.

1. Reversing device installation stage for pipeline repair

This step is a step of disposing the inverting device 100 for pipeline repair for repair of the pipeline (1) after the inspection, cleaning, and repair work of the pipeline (1) described above is completed.

That is, the impregnated tube supply unit 10, the steam generator 20, the steam supply hose 30, the inverting housing 40 and the air generating means 50, which are loaded with the impregnated tube (T), are arranged at the construction location. .

Here, the inversion housing 40 is installed at a position adjacent to the manhole 1a when the pipe line 1 is repaired.

2. Reversing the impregnated tube and placing the steam supply hose

This step is a step for moving the steam supply hose 30 together with the impregnated tube (T) while inverting the impregnated tube (T) in the conduit (1) using the reversing device 100 for pipe repair.

After passing one end of the impregnated tube (T) loaded on the impregnated tube supply unit (10) to the inside through the inlet (41) of the inversion housing (40) to carry out this step, the impregnated tube (T) is to be moved. It is fixedly coupled to the impregnated tube coupling portion 42 formed on the outside of the lower end of the inverted housing 40 in a state in which the end of the impregnated tube T is inverted so that the inner surface can be disposed outward.

Then, insert the steam supply hose 30 through the inlet part 41 of the inversion housing 40, and insert the tip of the steam supply hose 30 into the inversion tube T disposed in the inversion housing 40. combine

When the installation of the impregnated tube (T) and the steam supply hose 30 is completed as described above, the air generating means 50 is connected to the air supply/discharge part 43 of the inversion housing 40 to form the inversion housing 40. When air is supplied to the inside, the impregnated tube (T) is reversed by the pressure of the compressed air and placed in the pipeline (1), and the steam supply hose 30 is also moved by the movement of the impregnated tube (T). do.

The above process is performed by injecting compressed air until the impregnated tube (T) moves to the position planned by the operator to move the impregnated tube (T) while inverting the impregnated tube (T) while moving inside the pipe (1) by compressed air. ) to maintain the inflated state.

3. Impregnated tube curing step

When the impregnated tube (T) is placed to a desired position in the pipeline (1) through the step of reversing the impregnated tube and placing the steam supply hose, the operator uses the steam cap (44) to remove the inlet (41) of the inverted housing (40). to block it

Of course, the steam cap 44 is not shown in detail in the drawing, but the impregnated tube T can be brought into contact with the auxiliary pipe 1 even in a state in which the steam supply hose 30 inserted into the inlet 41 exists. It is joined to maintain a sealed state so that it can be loosened to a sufficient degree.

In addition, while coupling the steam cap 44, high-temperature/high-pressure steam is generated through the steam generator 20 and supplied to the steam supply hose 30, while the air supply/discharge unit of the inverted housing 40 Remove the air generating means 50 coupled to the.

Then, the steam supplied through the steam supply hose 30 is moved to the extended position of the steam supply hose 30 as well as impregnated with steam through the steam discharge hole 31 formed in the steam supply hose 30 . By spraying the tube (T), the impregnated tube (T) is cured.

Here, the steam supply hose 30 is formed in a flat shape. When steam is supplied, it inflates into a substantially circular shape.

That is, since steam is not supplied in a state in which a large area exists from the beginning, but is spread by supply of steam in a compressed state, the steam is supplied by the steam supply pressure to the steam supply hose coupled to the impregnated tube (T). Steam is delivered to the tip of (30).

In other words, since steam is not concentrated only at the position where steam is supplied, but steam is smoothly supplied to the end of the impregnated tube (T), the impregnated tube (T) can be cured evenly, improving curing efficiency as well as constructability. It is possible to obtain an action effect that can improve the

On the other hand, the steam supplied as described above and the compressed air present in the impregnated tube (T) form a positive pressure by the continuously supplied steam, so that the shape of the impregnated tube (T) can be continuously maintained, as well as some is discharged through the air supply/discharge part 43 of the inverted housing 40 .

Here, the impregnated tube (T) in the present invention is impregnated with a thermosetting resin and hardened by heat. This thermosetting resin generates an odor when cured by heat. In the present invention, the impregnated tube (T) is cured by air By coupling the carbon filter 60 to the air supply/discharge part 43 of the inverted housing 40, it is possible to suppress odor generation.

Furthermore, in the conventional case, a hole is punched at the tip of the impregnated tube (T) for air discharge, but in the present invention, workability is achieved because air is supplied and discharged through the air supply/discharge unit 43 for air supply. can be improved.

Meanwhile, in this step, the steam generator 20 is first heated through the preheating unit 21 , and then secondary heating is performed through the heating unit 24 , so that high temperature and dry steam can be generated.

That is, water is added to the preheating unit 21 and heated at a temperature of 100 to 110° C. and a pressure of 3 to 4 kg/f to generate heated steam.

The heated steam generated in this way moves to the heating unit 24 through the superheated steam transfer pipe 22 and is heated secondarily to a pressure of 30 to 40 kg/f and a temperature of 121 to 135° C., thereby generating high-temperature, dry steam compared to the prior art. The high temperature and dry steam as described above is supplied in a reduced pressure (5 ~ 8kg/f) state through the pressure reducing valve (V), thereby increasing the curing efficiency of the impregnated tube (T). will be able to obtain

On the other hand, the superheated steam transfer pipe 22 is formed with an oxygen removal unit 23 for introducing an oxygen scavenger.

Therefore, the superheated steam with minimal moisture due to oxygen removal of the superheated steam moving to the heating part 24 is supplied to the heating part 24 and heated for a second time to generate high-temperature, high-pressure steam with reduced moisture and , By curing the impregnated tube (T) using high-temperature and high-pressure steam with reduced water molecules, the amount of condensed water by steam after curing is significantly reduced compared to the existing one, increasing curing efficiency through high-temperature/high-pressure steam In the curing process of (T), it is possible to obtain the effect of improving workability because the work for removing the condensed water is unnecessary along with the prevention of lifting of the impregnated tube (T) by the condensate and the completeness of construction.

That is, when water is first heated by the preheating unit 21, the distance between the oxygen atom and the hydrogen atom increases in the water that absorbs heat energy, and when the oxygen scavenger is added in the state where the space between the atoms is widened in this way, it constitutes water. The superheated steam in a state in which only the oxygen atoms are removed so that water cannot be formed is moved to the heating unit 24, and when the moved superheated steam is heated in the heating unit 24, the water molecules are reduced at high temperature and high pressure. By generating the steam of the impregnated tube (T) after curing the amount of condensed water generated by the steam can be reduced, it is possible to obtain the same effect as described above.

Although the above-described embodiment has been described with respect to a preferred embodiment of the present invention, the present invention is not limited thereto, and it is specified that it can be implemented by changing it in various forms without departing from the technical spirit of the present invention.

1: Damaged pipeline 1a: Manhole
10: impregnated tube supply part
V : pressure reducing valve T : impregnated tube
20: steam generator
21: preheating unit 22: superheated steam transfer pipe 23: oxygen removal unit 24: heating unit
30: steam supply hose
31: steam discharge hole
40: inverted housing
41: inlet part 42: impregnated tube coupling part 43: air supply/discharge part 44: steam cap
50: air generating means
60: carbon filter
100: reversing device for pipe repair

Claims (10)

an impregnated tube supply unit for supplying an impregnated tube;
a steam generator for generating steam to harden the impregnated tube;
a steam supply hose connected to the tip of the steam generator and the impregnated tube, the steam supply hose having a flat shape and including a plurality of steam discharge holes on the surface;
The impregnated tube supply unit forms an impregnated tube inlet into which the impregnated tube is introduced, and an impregnated tube coupling portion is formed outside the lower end to be inverted by combining the impregnated tube, and on one side air supply/discharge for air supply and discharge Inverted housing including a steam cap for blocking the inlet portion and the impregnated tube;
It is connected to the air supply/discharge part of the inverted housing and comprises an air generating means for supplying air,
The steam generator includes a preheating unit for generating superheated steam by heating water to a temperature of 100 to 110° C. and a pressure of 3 to 4 kg/f to generate steam for curing the impregnated tube;
a superheated steam moving pipe for moving the superheated steam passing through the preheating unit;
an oxygen removing unit installed on the superheated steam transfer pipe to inject an oxygen scavenger for removing oxygen contained in the superheated steam generated by the preheating unit;
It is connected to the other end of the superheated steam transfer pipe and is supplied with superheated steam in a state in which oxygen contained in the superheated steam has been removed by the oxygen scavenger input from the oxygen removal unit, at a pressure of 30 to 40kg/f, and a temperature of 121 to 135℃. Reversing device for pipe repair, characterized in that it consists of a heating part for generating high-temperature/high-pressure steam by heating.
delete According to claim 1, wherein the oxygen scavenger input to the oxygen eliminator constituting the steam generator is an inversion device for pipe repair, characterized in that the cobalt oxide catalyst.
The method of claim 1, wherein the steam supply hose maintains a flat shape when no steam is supplied, and is expanded when steam is supplied by a steam generator and is configured to spray steam to the impregnated tube through a steam discharge hole. Reversing device for pipeline repair.
According to claim 1, Reversing device for pipe repair, characterized in that the air supply / discharge portion of the inversion housing further includes a carbon filter.
In the non-excavating pipeline repair method using the reverse device for pipeline repair of claim 1,
An impregnated tube supply unit, a steam generator, a steam supply hose, a reversing housing, and an air generating means constituting the reversing device for pipe repair, installing an inversion device for pipeline repair;
The impregnated tube loaded on the impregnated tube supply unit constituting the reversing device for pipe repair is inserted into the inside through the impregnated tube inlet of the inverting housing, but the end of the impregnated tube is inverted to the impregnated tube coupling portion formed outside the lower end of the inverted housing After coupling the steam supply hose connected to the steam generator to the outside of the impregnated tube, connect the air generating means to the air supply/discharge part of the inversion housing to invert the impregnated tube and move the steam supply hose reversing the impregnated tube and placing the steam supply hose;
When the inversion of the impregnated tube is completed through the inversion of the impregnated tube and the steam supply hose arrangement step, the steam cap is coupled to the inlet of the impregnated tube at the top of the inverted housing, and the combination of the air generating means coupled to the air supply/discharge of the inverted housing is performed. The impregnated tube curing step of curing the impregnated tube by introducing the steam generated using the steam generator into the steam supply hose while maintaining the open state by releasing the steam to spray the steam through the steam discharge hole;
In the step of curing the impregnated tube, steam generation through the steam generator of the reversing device for pipe repair is generated by adding water to the preheating part of the steam generator and heating it at a temperature of 100 to 110° C. and a pressure of 3 to 4 kg/f to generate superheated steam. The superheated steam generated by the preheating unit is supplied with an oxygen scavenger through the oxygen removal unit formed in the superheated steam transfer pipe to remove oxygen in the superheated steam and decompose the water molecules to remove the water molecules in the superheated steam from the heating unit. A non-excavating pipeline repair method using a reversing device for pipeline repair, characterized in that it generates high-temperature/high-pressure steam by heating it to a pressure of 30-40 kg/f and a temperature of 121-135°C.
delete [Claim 7] The non-excavated pipe line using the reversing device for pipe repair according to claim 6, wherein the oxygen scavenger input to the oxygen removal unit of the steam generator constituting the reversing device for pipe repair in the impregnated tube curing step is a cobalt oxide catalyst repair method.
The method of claim 6, wherein the steam supply hose constituting the reversing device for pipe repair in the curing step of the impregnated tube maintains a flat shape when steam is not supplied, and is impregnated through the steam discharge hole while expanding when steam is supplied by the steam generator. A non-excavating pipeline repair method using a reversing device for pipeline repair, which is characterized by hardening by spraying steam on the tube.
[Claim 7] The method of claim 6, wherein in the curing step of the impregnated tube, the step of installing a carbon filter is further included in the air supply/discharge part of the inversion housing.

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