KR101291611B1 - Trenchless pipe repairing method using rotating twin rollers and silicon pad for sealing air stream - Google Patents

Abstract

PURPOSE: A non-excavation type pipe repair method using a twin rotary roller and a silicone rubber pad for cutting off an air current is provided to improve the efficiency of a repair work by increasing the transfer distance of a tube member. CONSTITUTION: A non-excavation type pipe repair method using a twin rotary roller and a silicone rubber pad for cutting off an air current is as follows. A tube member (10) having an inner surface coated with a thermosetting adhesive resin is wound around a winding roller. The front end of the tube member is fixed to the outlet of a reverse chamber (100B) of a transfer device (100). The tube member is towed to the inside of a chamber (100A). The inlet (101) of the chamber is sealed, and high-pressure compressed air is injected into the reverse chamber. The tube member is transferred to the inside of a pipe. The thermosetting adhesive resin of the tube member is hardened to fix the tube member to the inner wall of the pipe.

Description

TRENCHLESS PIPE REPAIRING METHOD USING ROTATING TWIN ROLLERS AND SILICON PAD FOR SEALING AIR STREAM}

The present invention relates to a non-excavated pipeline repair method, and in particular, towing the lining tube material (hereinafter referred to as "tube material") impregnated with a thermosetting adhesive resin on the inner surface, the towing inside the chamber of the reverse transfer device, The tube material introduced into the chamber in the airtight state of the conveying device is transferred to the old pipeline under the ground while inverted by the air flow of the high pressure compressed air, and the inverted tube material is expanded by the air flow of the compressed air to expand the inner wall of the pipe. The present invention relates to a non-excavated pipeline repairing method which forms a lining layer on the inner wall of a pipe by curing the thermosetting adhesive resin of the tube material with high temperature and high pressure saturated steam at the same time.

When repairing pipelines such as old sewer pipes or water pipes buried in the ground, the linings are reversed by inverting the repair lining tube (tube material) impregnated with thermosetting adhesive resin into the pipeline without digging the pipeline. Non-excavation pipeline repair lining method is widely applied to repair and repair the outer surface of the pipeline by the high temperature of the air flow while the outer surface of the pipeline by the thermosetting adhesive resin in close contact with the inner wall of the pipeline.

As such a complex expression subservient pipeline repair lining method is known is described in Patent Document 1 below.

KR 10-0551199 B1 In the case of the conventional non-excavation pipeline repair lining method disclosed in the Patent Document 1, the inlet of the inverting chamber is inverted in order to invert the tube material and continuously convey the force of the airflow of the compressed air inside the inverting chamber. Retractable means as in 21) are used. However, in the above structure, in order to continuously pass the tube material into the inversion chamber, the gate 21 must be opened. When the gate 21 is opened in this way, the compressed air for inversion inside the inversion chamber is opened through the gate. Since inevitably leaks, the pressure loss of the compressed air for inverting the tube material inside the inversion chamber occurs, causing a problem that the reverse transfer efficiency of the tube material is lowered. In order to solve this problem, a compressed air supply device such as a compressor for supplying compressed air in consideration of leakage of the compressed air must be used with a large capacity. There is this. In addition, in the conventional non-excavated pipeline repair method, the tube material can be continuously transferred without interruption. However, the tube material must pass through the opening / closing mechanism (gate) of the inlet chamber inlet when the tube material is transferred. As it cannot be blocked, the airtight structure of the inversion chamber becomes incomplete, and as a result, the conveyance efficiency of the tube material is reduced due to the pressure of the airflow of the compressed air. As a result, the working time for transferring the tube material into the pipe is long, and there is a disadvantage in that the overall time of the pipe repair process is long.

The present invention is to solve the disadvantages of the conventional pipeline repair method for continuously conveying the tube material in the air flow as described above, by completely blocking the leakage of the air flow through the inlet chamber entrance and exit to reduce the tube material conveying transfer propulsion force of the air flow In addition, by increasing the unit transfer amount of the tube material into the reversing chamber and increasing the unit reversal transfer distance of the tube material into the repair pipe, the non-excavated pipe line can reduce the overall process time of the pipeline repair and improve the working efficiency of the repair work. The purpose is to provide a repair method.

Non-excavation pipeline repair method of the present invention for achieving the above object,

Preparing a tube material impregnated with a thermosetting adhesive resin on an inner side thereof by wrapping the tube material on a winding roller or loading the loading box;

Tube material loading step of mounting the lining tube material by fixing the front end of the tube material loaded in the loading box through the chamber and the reversing chamber of the reversing transfer device in turn and then inverted at the exit of the reversing chamber and fixed to the exit end of the reversing chamber in an inverted state. ;

A twin rotary roller type provided inside the chamber in the state of closing the outlet of the chamber by opening the inlet opening and closing mechanism installed at the inlet of the chamber of the inversion transfer device and closing the outlet opening and closing mechanism provided at the outlet of the chamber. Rotating the traction mechanism to pull the outer tube material into the chamber by a length corresponding to the rotation angle;

With the inlet of the chamber equipped with the tube member closed and the outlet of the chamber open, the high pressure compressed air is injected into the reversing chamber, and the tube material towed into the chamber is driven repeatedly by the force of the compressed air. A reverse transfer step of transferring the inside of the pipeline until the rear end of the tube member reaches the end point of the working section of the pipeline while reversing the outside of the inversion chamber; And

By injecting high temperature / high pressure steam flowing through the inversion chamber of the inversion transfer device into the inside of the inverted conveyed tube material throughout the entire working section of the pipeline, the thermosetting adhesive resin of the tube material is cured by the pressure and heat of the supplied water vapor. It characterized in that it comprises a; tube material curing step of fixing the tube material in close contact with the inner wall of the pipe.

The tube material traction step,

The twin rotary roller type traction mechanism is a first lower traction roller rotatably installed about a rotational central axis at a lower side of the tube member mounted in the chamber, and the first lower traction roller in the direction of the rotational central axis from the upper side of the tube member. A first twin rotating roller disposed opposite to the first lower pulling roller and pivoting integrally with the first lower pulling roller, the first twin rotating roller being rotated clockwise about the rotation center axis; The tube material is wound around the first upper and lower traction rollers by turning from ° to 270 ° to pull the inlet tube material of the chamber into the chamber, and then the first upper and lower traction roller is turned counterclockwise to make the first It is characterized by releasing the tube material wound on the upper and lower traction rollers into the chamber and pulling the tube material into the chamber by the length wound around the first upper and lower traction rollers. .

Further, in the tube member traction step, the twin rotary roller type traction mechanism is disposed in front of the first lower traction roller in a tube material conveying direction below the tube material, and is pivotally installed around the rotational central axis. A second lower traction roller and a rear side of the first upper traction roller in a tube material conveying direction from an upper side of the tube material, and are disposed to face the second lower traction roller in a direction of the rotation center axis, Further comprising a second twin rotary roller consisting of a second upper traction roller that pivots integrally with the second lower traction roller at the center, when the second upper and lower traction rollers rotate from 180 ° to 270 °, It is characterized by the further pulling of the tube material into the chamber subsequent to the one upper / lower pulling roller.

In addition, the inlet opening and closing mechanism of the chamber is formed of a soft silicone rubber, and a fixed pad installed in the transverse direction at the inlet and the outlet, respectively, and a movable pad molded of soft silicone rubber and fixed to the tip of the actuator. In accordance with the operation of the actuator, the movable pad is coupled to or separated from the fixed pad to open and close the inlet and the outlet.

In addition, the fixing pad and the movable pad is provided with a protrusion on one side and a groove on the other side to receive the protrusion, and the protrusion and the groove are engaged with each other to seal the inlet and the outlet of the chamber.

According to the non-excavation pipeline repair method of the present invention, before the tube material is inverted and transferred from the inversion chamber of the inversion conveying apparatus, the repair material is pulled into the inversion chamber by securing a predetermined length to the inside of the chamber of the inversion conveying apparatus. The reverse transfer amount of the tube material reversely transferred to the compressed air can be made constant and uniform.

In addition, since the twin rotary rollers of the towing mechanism for towing the tube material to the inside of the chamber tow the tube material while turning up to 270 ° per revolution, the tube material towing amount per rotation of the towing mechanism, and further, the operation of the towing mechanism once. The maximum amount of sugar inversion can be increased, resulting in shortening the overall process time of the pipeline repair.

In addition, by increasing the airtightness of the inlet and outlet of the chamber for injecting the compressed air in order to transport the tube material, it is possible to increase the reverse transfer efficiency of the compressed air by blocking the leakage of the compressed air.

1 is a schematic diagram illustrating a process of repairing a pipeline according to the present invention.
2 is a view showing a structure of a conveyance transfer device in the pipeline repair method of the present invention, and showing a state in which a tube material is loaded in the conveyance transfer device.
Figures 3a to 3e is a step of 90 °, 180 °, 270 ° to the process of towing the outer tube material into the chamber of the reverse transfer device while the towing mechanism consisting of four tow roller rotates from 0 ° to 270 ° The figure is divided into.
4 is a process of inverting and transferring the tube material pulled by a predetermined length into the chamber through the inversion chamber with the compressed air injected into the chamber after closing the inlet of the chamber and opening the outlet after completing step 3e. It is a schematic drawing.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the non-excavation pipeline repair method according to the present invention will be described in detail.

1 is a schematic diagram illustrating a process of repairing a pipeline according to the present invention.

As shown in Figures 1 and 2, the non-excavated pipeline repair method of the present invention, the inner tube (10a) and the outer surface (10b) lining tube material impregnated with a thermosetting adhesive resin on the inner surface (10a) (10) a tube material preparation step (A) for loading and preparing a loading box (hereinafter, simply referred to as "tube material"); The tube material 10 loaded in the loading box is passed through the chamber 100A and the reversing chamber 100B of the reversing transfer apparatus 100 in order, and then reversed in a state in which the tip portion is reversed at the outlet 103 of the reversing chamber 100B. A tube material loading step (B) for fixing the tube material (10) to the reverse transfer device (100) by fixing it to the tip of the outlet (103) of the seal (100B); The outer tube material 10 is moved to the chamber by rotating the tow rollers 201 and 202 of the twin rotary roller type traction mechanism 200 provided in the chamber 100A of the reverse transfer device 100 in one direction (clockwise). Tube material towing step (C) for towing a predetermined length into (100A); Injecting high pressure compressed air into the inversion chamber 100B of the inversion transfer apparatus 100 and repeatedly inverting the chamber 100B by the length secured in advance in the chamber 100A by the driving force of the compressed air. Tube material reverse transfer step (D) for reverse transfer to the outside of the; After the tube material 10 is reversely transferred over the entire work section of the pipe line P, high temperature / high pressure steam is injected into the tube material 10 through the inversion chamber 100B of the reverse transfer device 100. By the hardening of the thermosetting adhesive resin of the tube material 10, the tube material curing step (E) of fixing the tube material 10 in close contact with the inner wall of the pipeline (P);

As shown in FIG. 1, the reverse transfer device 100 is preferably a vehicle mounted type mounted on a vehicle in consideration of mobility. Reverse transfer device 100 used in the method of the present invention, as shown in Figure 2, the chamber 100A having an inlet 101 and the outlet 102, continuous to the outlet 102 of the chamber (100A) A plurality of towing rollers 201, 202, 203 and 204 for turning the reversing chamber 100B and the tube material 10 loaded in the chamber 100A about the rotational central axis 205 in the chamber 100A. Traction mechanism 200 for winding the outer tube member 10 to the inside of the chamber 100A by winding it around, compressed air inlet 110 for injecting compressed air into the chamber 100A, and the tube member. It includes a steam injection port 120 for supplying steam of high temperature / high pressure into the inversion chamber (100B) to reverse transfer. In addition, the inlet 101 of the chamber 100A is opened and closed by the inlet opening and closing mechanism 104, and the outlet 102 is opened and closed by the outlet opening and closing mechanism 107. The inversion chamber 100B and the chamber 100A communicate with each other through the outlet 102 of the chamber 100A.

In addition, the traction mechanism 200 for pulling the external tube member 10 into the chamber 100A of the reverse transfer device 100 in the tube member traction step includes a first twin rotating roller and a second twin rotating roller. .

The first twin rotating roller is disposed below the tube member 10 mounted in the chamber 100A, and is provided with a first lower traction roller 201 rotatably installed around the rotation center axis 205 and the tube. An upper side of the ash 10 is disposed opposite to the first lower traction roller 201 in the direction of the rotation center axis 205 and integrally with the first lower traction roller 201 about the rotation center axis 205. It consists of a first upper traction roller 202 turning to. The second twin rotary roller is disposed in front of the first lower traction roller 201 in the tube material conveying direction from the lower side of the tube material 10, and is pivotally mounted about the rotation center axis 205. A second lower traction roller 203 and a rear side of the first upper traction roller 202 along the tube material conveying direction from the upper side of the tube material 10; And a second upper traction roller 204 disposed to face the lower traction roller 203 and pivoting integrally with the second lower traction roller 202 about the rotation center axis 205.

The four tow rollers 201, 202, 203 and 204 are pivotally connected to the rotation center axis 205 with one connecting arm 206 at both axial ends, respectively, and are rotated by the driving motor M1. It turns around clockwise or counterclockwise.

Hereinafter, the non-excavation pipeline repair method of the present invention described above will be described step by step.

(A) Tube material  Preparation phase

The tube material 10 used in the non-excavation pipeline repair method of the present invention is made of a nonwoven fabric, and the inner surface 10a and the outer surface 10b are manufactured by impregnating a thermosetting adhesive resin on the inner surface 10b. The tube material 10 thus prepared is prepared in sufficient length in accordance with the length of the pipe line P to be repaired, and is stacked on the winding roller or stacked in a stacking box.

(B) Tube material  Loading in reverse feeder

Reverse transfer device 100 for inverting the tube material 10 with high pressure compressed air (inverting the inside and outside so that the inner side is exposed to the outside) and at the same time conveying the inverted tube material 10 with the force of compressed air. Is placed near the entrance (manhole) of the old pipeline (hereinafter referred to as "pipe") to be repaired. (See Fig. 1)

The front end of the tube material 10 loaded in the loading box is the chamber inlet 101 of the reverse transfer device 100, the first and second upper towing rollers 202 and 203 and the first and second of the towing mechanism 200. Through the space between the lower traction rollers 201 and 204, the outlet 102 of the chamber 100A, and the reversing chamber 100B, the inner surface 10a is moved outward from the exit 103 of the reversing chamber 100B. The side surface 10b is inverted to face the inner side, and then the tip of the inverted tube member 10 is fixed to the outlet 103 of the inversion chamber 100B by a fastening means to fix the tube member 10 to the reverse transfer device ( 100). (State of FIG. 2)

(C) outside Tube material  Towing into the reverse feeder

After loading the tube material 10 into the reverse transfer device 100, the inlet 101 of the chamber 100A is inlet so that the outer tube material 10 can pass through the inlet 101 of the chamber 100A. When the tube member 10 is opened to the opening / closing mechanism 104 and the tube member 10 is pulled into the chamber 100A by the traction mechanism 200, the tube member on the outlet 102 side of the chamber 100A is not towed into the chamber 100A. The outlet 102 of the chamber 100A is closed by the outlet opening / closing mechanism 107 so as to prevent it (state of FIG. 3A).

Then, the four tow rollers 201, 202, 203 and 204 of the traction mechanism 200 are rotated from 0 ° to 270 ° counterclockwise about the rotational center axis 205, and at a turning angle between 0 ° and 180 °, 1 The lower traction roller 201 and the first upper traction roller 202 wrap the tube material 10 around the traction to pull the tube material 10 into the chamber 100A and then pivot from 180 ° to 270 °. When the second lower traction roller 203 and the second upper traction roller 204 further wrap the tube material 10 around the tube material 10 further by the length of the additional wound around the chamber (100A) To be pulled inward (FIGS. 3A-3D).

As described above, the four tow rollers 201,202,203,204 are pivoted from 0 ° to 270 ° to pull the tube material 10 into the chamber 100A, and then the four tow rollers 201,202,203,204 are counterclockwise. By turning, the tube member 10 wound around the four tow rollers 201, 202, 203, and 204 is released in turn, and stored in the tensionless state inside the chamber 100A (FIG. 3E state).

(D) transferring the tube material pulled inside the chamber of the reverse transfer apparatus to the outside of the reverse transfer apparatus;

Of the chamber 100A so that the high pressure compressed air injected into the chamber 100A can be provided only to the inversion chamber 100B through the outlet 102 without leaking through the inlet 101 of the chamber 100A. The inlet 101 is closed by the inlet opening and closing mechanism 104, and the outlet 102 of the chamber 100A is opened by the outlet opening and closing mechanism 107. At this time, the protrusions provided on the fixing pad 106 of the silicone material of the inlet opening / closing mechanism 104 and the grooves provided on the movable pad 105 of the silicone material are engaged with each other to completely seal the inlet 101.

Then, when the compressed air and the high pressure compressed air generated by the steam generator 300 are injected into the chamber 100A through the compressed air inlet 110 coupled to the chamber 100A of the reverse transfer device 100, This compressed air is supplied into the inversion chamber 100B through the outlet 102 of the chamber 100A and pushes the tip of the tube member 10 fixed to the outlet of the inversion chamber 100B to the outside of the inversion chamber 100B. Coming out, compressed air is injected until the tube material 10 pulled inside the chamber 100A is completely inverted and transferred out of the inversion chamber 100B (see FIG. 4).

As such, the inlet 101 of the chamber 100A of the reverse transfer device 100 is closed by engaging the fixing pad 106 of the inlet opening / closing mechanism 104 and the movable pad 105 to thereby form the interior of the chamber 100A. Since the leakage of the compressed air is completely blocked, it is possible to maximize the tube material reversal transfer efficiency of the compressed air injected into the chamber (100A).

(E) periodically repeating the steps (C) to (D) to transfer the inverted tube material over the repair work period of the pipe line and continue to inject compressed air into the tube material 10 while Inflation is brought into close contact with the inner wall of the pipe (P).

On the other hand, while the tube material is inverted and transferred, the support wire W is connected to the end of the tube material 10 before the end passes through the inlet 101 of the chamber 100A, so that the tube material 10 repairs the conduit P. Support the end of the tube member 10 until it extends to the end of the working section. Reference numeral R denotes a winding roller for winding the support wire W, and reference numeral M2 denotes a drive motor of the winding roller. The winding roller driving motor M2 controls the release speed of the support wire W, so that the tube material 10 is supplied into the conduit P while maintaining a constant tension.

(F) curing bonding step of the tube material

After the tube material 10 is reversely transferred over the entire working section of the pipe line P, the outlet 102 of the chamber 100A is sealed with the outlet opening and closing mechanism 107, and the steam inlet 120 of the high temperature and high pressure is closed. The high temperature / high pressure steam is injected into the inversion chamber 100B. This high temperature / high pressure water vapor is injected into the tube material 10 in close contact with the inner wall of the pipe line P through the inversion chamber 100B, and the tube material 10 is cured by curing the thermosetting adhesive resin of the tube material 10. 10) is fixed to the inner wall of the pipeline (P).

10: tube member 10a: inner surface of the tube member
10b: outer side 100: reverse feeder
100A; Chamber 100B: Inverting Room
101: chamber inlet 102: chamber outlet
103: outlet of the inversion chamber 104: chamber entrance opening and closing mechanism
105: movable pad 106: fixed pad
107: chamber outlet opening and closing device 108: movable pad
109: fixing pad 110: compressed air inlet
115,116: guide roller 1 120: steam inlet
200: twin rotary roller towing mechanism
201: First Lower Traction Roller 202: First Upper Traction Roller
203: second lower traction roller 204: second upper traction roller
205: rotational axis 300: compressed air and steam generator
P: Pipe line M1: Drive motor
W: Support Wire R: Support Wire Winding Roller
M2: winding roller drive motor

Claims (5)

In the non-excavated pipeline repair method using twin rotary rollers and airflow blocking silicone rubber pad,
The non-excavation pipeline repair method,
Preparing (A) a tube material (10) impregnated with a thermosetting adhesive resin on an inner surface thereof, by winding it on a winding roller or loading the loading box;
The tip of the tube material 10 loaded in the loading box passes through the chamber 100A and the reversing chamber 100B of the reversing transfer apparatus 100 in turn, and is then inverted at the outlet 103 of the reversing chamber 100B. Tube material loading step (B) for mounting the lining tube material 10 is fixed to the tip of the outlet 103 of the furnace reversal chamber (100B);
Opening the inlet opening and closing mechanism 104 installed in the inlet 101 of the chamber 100A of the reverse transfer device 100 to open the inlet 101 of the chamber 100A, and opening and closing the outlet provided at the outlet of the chamber 100A. In a state where the outlet of the chamber 100A is closed by closing the mechanism, the outer tube member 10 is rotated by a length corresponding to the rotation angle by rotating the twin rotary roller type traction mechanism 200 provided inside the chamber 100A. Towing into chamber 100A (C);
In the state where the inlet 101 of the chamber 100A on which the tube material 10 is mounted is sealed and the outlet 102 of the chamber 100A is opened, high pressure compressed air is injected into the inversion chamber 100B and compressed. The rear end of the tube member 10 is the end point of the work section of the pipeline while repeatedly inverting the tube member 10 pulled into the chamber 100A by the propulsion force of the air to the outside of the inversion chamber 100B. A reverse transfer step (D) for transferring the inside of the conduit until reaching; And
By injecting the high temperature / high pressure steam introduced through the inversion chamber 100B of the inversion transfer apparatus 100 and supplying it into the inside of the tube material 10 inverted and transported over the entire working period of the pipeline, the pressure of the supplied steam And a tube material curing step (E) of hardening the thermosetting adhesive resin of the tube material 10 by overheating to fix the tube material 10 to the inner wall of the pipe line (P).
The tube material traction step,
The first rotary traction roller 200, the first lower traction roller 201 is installed to be pivotable about the rotation center axis 205 in the lower side of the tube material 10 mounted in the chamber (100A), A first upper traction roller disposed to face the first lower traction roller 201 in the direction of the center of rotation 205 on the upper side of the tube member 10 and integrally pivoting together with the first lower traction roller ( The first twin rotary roller consisting of 202 and the tube material 10 is disposed in the front of the first lower pull roller 201 along the tube material conveying direction, the center of rotation center axis 205 A second lower traction roller 203 rotatably provided and a rear of the first upper traction roller 202 along the tube material conveying direction from the upper side of the tube material 10; To face the second lower pull roller 203 in a direction to It is provided with a second twin rotary roller made of a second upper traction roller 204 pivoting integrally with the second lower traction roller 203 as a core,
Tube material 10 around the first upper and lower traction rollers 201 and 202 by pivoting the first twin rotating roller and the second twin rotating roller from 0 ° to 270 ° clockwise about the rotation center axis 205. ) And tow the inlet tube material 10 of the chamber 100A into the chamber 100A, and then rotate the first upper and lower traction rollers 201 and 202 counterclockwise to rotate the first upper and lower traction rollers. The tube material 10 wound on the 201 and 202 is released into the chamber 100A, and the tube material 10 is pulled into the chamber 100A by the length wound around the first upper and lower traction rollers 201 and 202.
When the second upper and lower traction rollers 203 and 204 are pivoted from 180 ° to 270 °, the tube material 10 is additionally pulled into the chamber 100A following the first upper and lower traction rollers 201 and 202. Non-excavated pipeline repair method using a twin rotary roller and airflow blocking silicone rubber pad. delete delete According to claim 1, wherein the inlet opening and closing mechanism 104 and the outlet opening and closing mechanism 107 of the chamber (100A) is formed of soft silicone rubber and fixed to the transverse direction installed in the inlet 101 and the outlet 102, respectively (106,109) and movable pads (105,108) formed of soft silicone rubber and fixed to the tip of the actuator, and the movable pads (105,108) are tightly coupled to or separated from the fixed pads (106,109) according to the operation of the actuator. Non-excavation pipeline repair method using a twin rotary roller and airflow blocking silicone rubber pads, characterized in that the inlet 101 and the outlet 102 are opened and closed. The method of claim 4, wherein the fixing pads (106, 109) and the movable pads (105, 108) are provided with grooves, one of which has protrusions and the other having grooves for receiving the protrusions. 101) and a non-excavated pipeline repair method using a twin rotary roller and airflow blocking silicone rubber pad, characterized in that the sealing (102).

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