KR20000006990A - Method and apparatus for inverting impregnated tube in pipe - Google Patents

Abstract

PURPOSE: A repair method is provide to minimize the danger of bursting of a soft tube when an old tube is repaired. CONSTITUTION: A close adherence method of the soft tube reverse insertion comprises the steps of:combining the inlet(18) of the reverse insertion control part with the opening of a soft tube conveyance container(20); reversing the soft tube(30) and banding to the circumference of the cylindrical outlet(15); reverse inserting the soft tube into the passage(2) by the air pressure and the water pressure; thermal hardening of the soft tube close adhered on the inner wall of the passage by the hot water; and pumping out the hot water filled in the soft tube by the pumping of the pumping out hose(26).

Description

Method and device for inverting impregnated tube in pipe for repairing aged tubes

The present invention is to replace and repair or replace the buried pipeline in the case of aging various pipelines, for example, sewer pipe, water pipe, gas pipe, communication pipe, etc. buried underground to repair and repair the old pipe Is a method of inserting, hardening, and curing a flexible tube impregnated with a thermosetting resin into an existing pipe to be aging and repaired, in particular, without repairing the ground, so-called "cured in place" (CIPP). Pipes) "is a non-excavated sewage pipe repair and repair method in which the flexible tube is inverted and inserted using a combination of air pressure and water pressure.

Conventionally, three methods are already known as a method of inserting a soft tube of "site hardening method" into a pipeline to repair and repair the interior of an aging pipeline. That is, a hydraulic pressure reversal insertion method for reversibly inserting a soft tube into a pipeline using hydraulic pressure, an air pressure reversal insertion method for reversibly inserting a soft tube into a pipeline using air pressure, or a winch dog insertion method using a towing rope.

Referring to the conventional hydraulic pressure reversal insertion method schematically, as shown in FIG. Inverter mount (3) of the), the end of the flexible tube (1) to the upper end of the reverse mount (3) in a cylindrical inverted and tightly fixed to fix. Next, if the soft tube 1 is continuously pushed by a certain amount, the soft tube 1 is flipped over and falls down by a predetermined amount while being struck down. Thereafter, the soft tube 1 is automatically turned upside down by the weight of the water supplied by supplying water from the faucet 4, that is, the water pressure, and the reverse insertion is performed along the pipe line 2. This was simply to supply water to the flexible tube 1, so that the inversion by the water pressure as high as the height of the reversing mount (3).

In addition, when the conventional air pressure reversal insertion method is schematically described, as shown in FIG. 2, the circular air pressure reversal vessel 5 for expanding and strengthening the flexible tube 1 by the winding reel 6 is expanded and strengthened. The pneumatic insertion section 7 for supplying the pneumatic pressure and the vapor pressure insertion section 8 for supplying the vapor pressure for thermal curing the soft tube 1 in the conduit 2 are provided. The air pressure reversing container 5 is completely sealed by inverting the end of the flexible tube 1 in the opening and tightly binding it. In this state, by applying air pressure to the inside of the air pressure reversing vessel 5, the soft tube 1 is automatically turned upside down by the air pressure so as to be reversely inserted along the pipeline 2, and from the vapor pressure inserting portion 8 It is a method of thermally curing the flexible tube 1 to the inner wall surface of the conduit 2 by supplying a vapor pressure. In addition, since the air pressure reversing container 5 is limited in the amount capable of holding the soft tube 1, there is a problem in that it is not possible to contain the soft tube 1 as much as necessary depending on the construction length.

In addition, the winch indentation method (not shown) is outlined, and the traction rope is tied to the end of the soft tube, and the rope is passed through the old pipeline to tow the rope with a winch located on the opposite side to the old tube. As a method of directly inserting into the inside of the conduit, it is a non-inverted insertion method that prevents the soft tube from inverting.

All the so-called site hardening methods described above are methods for repairing various pipelines without digging the ground, and environmental problems (such as soil erosion and groundwater contamination due to dust, noise, and vibration) in the method of replacing pipes by excavation methods. ), Logistics costs, transportation problems due to traffic dispersion by road use, pavement recovery costs (shortening the life of the road), safety costs (risk of other underground deposits such as gas, water, and communication), etc. It causes a problem as described.

That is, in the hydraulic pressure reversal insertion method, the pressure head must be maintained with the height of the reversing mount 3 at least 5 m in order to maintain proper hydraulic pressure. Therefore, water consumption is increased, especially in the case of a downward slope pipeline, the beginning and the end of the pipeline. There is a problem that the water pressure is changed to the end of the pipe receives a lot of water pressure so that the soft tube (1) is easy to rupture, and there is a problem that the thickness of the soft tube to be thicker than necessary to solve this problem.

In addition, in the pneumatic reversal insertion method, due to the buoyancy of the expanded flexible tube (1), it is impossible to push out the unknown or residual water that penetrates into the aging pipe, so that the cracks and breaks in the existing pipe, the gap of the seam, the dent of the connection pipe, etc. are compressed. The state becomes poor, and by supplying the vapor pressure generated high temperature, high pressure there was a problem of safety during construction.

In addition, the winch tow insertion method has a problem that it is difficult to insert the traction or damage the soft tube due to friction between the inner wall of the existing pipe and the soft tube when the traction insert by the winch.

Therefore, the present invention was devised to solve the problems of the prior art of the hydraulic pressure reversal insertion method, the pneumatic reversal insertion method and the winch tow insertion method as described above, by using a combination of air pressure and hydraulic pressure into the aging pipeline. By reversal insertion, it is possible to supplement the weaknesses of unknown and residual water which may occur during pneumatic reversal insertion, and to minimize the risk of rupture of the flexible tube that may occur during hydraulic reversal insertion.

In addition, regardless of the thickness of the flexible tube according to the condition of the pipe line to maintain a uniform adhesion of the flexible tube to the inner wall surface of the pipe line, while preventing excessive water consumption during reversal insertion, while increasing the speed of thermal curing To make it possible.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an explanatory view showing a conventional hydraulic pressure reversal insertion method in which a soft tube is reversely inserted into a pipeline using hydraulic pressure.

Fig. 2 is an explanatory diagram showing a conventional pneumatic reversal insertion method in which a soft tube is reversibly inserted into a pipeline using air pressure.

Fig. 3 is an explanatory view showing a soft tube inverting and inserting device of the present invention which inverts and inserts a soft tube into a conduit by using hydraulic pressure and air pressure together.

Figure 4 is a partial explanatory view showing a reversal insertion control unit of the soft tube reversing insertion device of the present invention.

5a and 5b is a partial explanatory view showing a soft tube carrying container of the soft tube reversal insertion device of the present invention.

6 is an explanatory view showing a state in which a soft tube is attached to a cylindrical outlet of the reversal insertion control unit of the present invention.

7 is an explanatory view showing a state in which the flexible tube of the present invention is inserted along the pipeline.

8 is an explanatory diagram showing a state in which a hot water hose and a discharge hose are mounted inside the flexible tube of the present invention.

* Explanation of symbols on the main parts of the drawings

1, 30. Flexible tube 2. Pipeline

3. reverse mount 4. faucet

5. Air pressure reversing vessel 6, 21. Winding reel

9, 11.Guide reel 7.Pneumatic insert

8. Vapor pressure insert 10. Reverse insert adjustment

12. Connection member for hot water 13. Connection member for drainage

14. Sealable membrane 15. Cylindrical outlet

16.Pneumatic inlet 17.Hydraulic inlet

18. Inlet of reversal insertion control 19. Opening of soft tube container

20. Flexible tube container 22. Reverse speed controller

23. Support Shaft 24: Rotating Handle

25. Hot water hose 26. Water discharge hose

27. Inlet cover 28. Through hole

Looking at the configuration of the present invention for achieving the above object is as follows.

That is, the present invention, in the soft tube inverted insertion close contact device for repairing the sewer pipe by non-excavation, and includes a reverse insertion control unit 10 and a soft tube transport container 20,

The reversal insertion control unit 10 has a guide reel 11 rotatably mounted to allow the soft tube 30 to slide well into the cylindrical outlet 15 therein, and a hose 25 and a retractor to the outside. The connection member 12 for hot water and the discharge member 13 connected to the receiving hose 26, the opening / closing sealing membrane 14 for sealing the expanded soft tube 30, and the cylindrical outlet 15 With a pneumatic inlet 16 for injecting air to both sides and a hydraulic inlet 17 for supplying water,

The flexible tube carrying container 20 can be smoothly slipped into the winding reel 21 rotatably mounted to wound the hot water and the discharge hose, and the soft tube 30 into the inlet 18 of the reversal insertion control unit. In order to adjust the reversal speed of the guide reel (9) and the soft tube (30) to guide so as to have a reversing speed regulator 22 coupled to the support shaft (23).

Hereinafter, with reference to the drawings will be described a preferred embodiment of the present invention. The soft tube reversal insertion device according to the present invention, as shown in Fig. 3, is made by connecting the inlet 18 of the reversal insertion control unit and the mutually hermetically connected by the fastener through the opening 19 of the soft tube transport container. 3 and 4, the reversal insertion control unit 10 is provided with a guide reel 11 that rotates smoothly therein so that the soft tube 30 slides well into the cylindrical outlet 15. It is guided to enter, the hot water connection member 12 and the discharge connection member 13 that can be connected to the hot water and the discharge hose is provided.

In addition, the upper portion of the cylindrical outlet (15), when the reversal insertion control unit 10 and the soft tube transport container 20 is separated, the opening and closing type that can be expanded to seal the soft tube 30 reversely inserted into the existing tube. The sealing membrane 14 is provided, and the side surface is provided with the pneumatic inlet port 16 which can inject air, and the hydraulic inlet port 17 which can supply water.

The flexible tube carrying container 20, as shown in Figures 3 and 5a, 5b, the guide reel (9) to allow the soft tube 30 to slide smoothly into the inlet 18 of the reversal insertion control unit. ) And a reel 21 for winding hot water and discharge hoses 25 and 26 and a rope (not shown), and a reversal speed controller 22 for adjusting the reversal speed of the flexible tube 30. It is installed. At this time, the hose wound on the winding reel 21 may be hanged on a hook (not shown) formed on the wall in the flexible tube carrying container 20 to be automatically released. The soft tube 30 is a tube made of polyester felt, glass fiber felt or the like.

Initially, the flexible tube 30 impregnated with the thermosetting resin is in a flat state, and becomes cylindrical when it is expanded by water pressure or air pressure. The soft flexible tube 30 impregnated with the thermosetting resin is stored in the flexible tube transport container 20 in a stacked form, as shown in FIGS. 3 and 5B. At this time, the bottom end of the flexible tube (30) stacked on top of each other in the winding reel (21) installed on one side of the flexible tube transport container 20 by tying one hose for hot water and the discharge hose and one rope, respectively. Wrap it up.

And, connecting the inlet 18 of the reversal insertion control unit and the opening 19 of the flexible tube transport container and at the same time draw the upper end of the soft tube 30 to the opening 19 of the soft tube transport container to the inlet of the reversal insertion control unit. (18) and then out of the cylindrical outlet (15). Of course, the soft tube 30 is pulled out of the cylindrical outlet 15 through the opening 19 of the soft tube carrying container and the inlet 18 of the reversing insertion adjusting unit, and then the reversing insertion adjusting unit 10 and the soft tube carrying container. You may connect (20).

Then, at the lower end of the cylindrical outlet 15, as shown in Fig. 6, the soft tube 30 is turned upside down in a cylindrical shape and bundled tightly (banding treatment), and then upside down by a predetermined length. In this state, the cylindrical outlet 15 is closed with the outside due to the bundle of the soft tube 30, so that the soft tube carrying container 20 and the reversal insertion control unit 10 are opened and closed with the outside.

As described above, when water is supplied through the hydraulic inlet 17 in a sealed state with the outside, the outer surface of the flexible tube 30 is filled and the flexible tube 30 is inverted while being pushed down by the hydraulic pressure. It is lowered and inserted into the conduit 2. From the moment the soft tube 30 is pushed down and inserted into the existing aging tube, an appropriate pressure is required to inflate the soft tube 30 and adhere to the inner wall of the conduit 2. At the same time, compressed air is injected in parallel through the pneumatic inlet port 16 to maintain an appropriate pressure (that is, the internal pressure necessary for the soft tube 30 to expand and adhere to the inner wall of the conduit 2) in the soft tube 30. While the reversal insertion process is to proceed to adjust the reversal speed of the flexible tube (30). That is, in order to closely contact the inverted inserted soft tube 30 to the inner wall of the conduit 2 in a fully expanded state, the reversal insertion speed of the soft tube 30 must be adjusted according to the speed and amount of water and air supplied. . Therefore, in the present invention, as shown in Figs. 3 and 5, the inversion speed regulator 22 is provided in the flexible tube transport container 20 so that the inversion speed of the soft tube 30 can be adjusted. The reverse speed regulator 22 is cut out of the inside of the semi-cylinder, the support shaft 23 is coupled to be rotatable to the support axis, it is possible to adjust while moving the rotary knob 24 back and forth.

In addition, in order to sufficiently inflate the flexible tube 30, it is preferable to maintain the internal pressure of the sealed flexible tube 30 at 0.5 to 1.0 kg / cm ² depending on the thickness of the flexible tube. As shown in Fig. 7, the amount of water supplied to the upper surface is preferably maintained at the uppermost surface of the inlet pipe in which the old pipe is buried, and the height of the surface of water is appropriately maintained at or below the residual water or groundwater infiltration.

As shown in FIGS. 3, 4 and 7, the soft tube 30 is reversed as air and water are continuously supplied through the pneumatic inlet 16 and the hydraulic inlet 17 of the reversal insertion control unit 10. The slide is dragged down on the guide reel (11) of the insertion control unit 10, the end of the flexible tube 30 is inverted and reversely inserted to be inserted along the conduit (2). However, as shown in FIG. 7, when half of the length of the soft tube 30 is reversely inserted, the entire soft tube 30 held in the soft tube carrying container 20 is dragged into the inside of the conduit 2. It should be noted that the other half of the soft tube 30 is not inverted and is located inside the soft tube 30 which is already inverted and inserted into the inner wall of the expanded conduit 2.

From this time, while slowly releasing the rope wound on the winding reel 21 of the flexible tube carrying container 20 until the flexible tube 30 is completely inverted and inserted, the reel insertion speed is adjusted and wound with the rope ( The hot water hose 25 and the retracting hose 26 wound around 21 are also drawn and drawn into the expanded soft tube. Inverting and inserting the flexible tube 30 completely into the conduit 2 in this manner is complete.

When the reverse insertion is completed, the closed flexible membrane 14 installed on the upper portion of the cylindrical outlet 15 is closed to seal the expanded soft tube 30, and the soft tube transport container 20 is separated from the reversal insertion control unit 10. Let's do it. Then, the hot water hose 25 and the discharge hose 26 are connected to the hot water connection member 12 and the discharge connection member 13, respectively. In addition, the rope fixed to the winding reel 21 is tied to the guide reel 11 to prevent reversal further, and at the same time, the inlet port 18 of the reversal insertion control unit is closed by the inlet cover 27 shown in FIG. By closing the reversal insertion control unit 10, the ventilation with the outside is blocked. Then, when opening and closing the closed membrane 14 of the upper portion of the cylindrical outlet 15, the expanded soft tube 30 is sealed from the inlet 18, the ON which was pressed by the open and closed membrane 14 The accommodation hose 25 and the discharge hose 26 are in a state where water can pass through.

After the reverse insertion process and the connection process of the hot water and the discharge hoses 25 and 26 according to the present invention are completed, the air pressure is continuously injected in order to maintain a constant internal pressure of the expanded connection tube 30. Hot water of about 80 to 85 ° C. is supplied from the accommodating hose 25 so that the flexible tube 30 is brought into close contact with the inner wall of the conduit 2 to be cured. Referring to the hot water supply method by the hot water hose 25 as follows. That is, when the reversal insertion of the flexible tube 30 is completely completed, the hot water hose 25 and the discharge hose 26, which are tied together at the ends of the soft tube 30 and inserted together, are expanded as shown in FIG. 8. It is located inside the flexible tube (30). In this state, the hot water connection member 12 and the water discharge connection member 13 connected to the hot water hose 25 and the water discharge hose 26 are connected to the hot water boiler (not shown). Then, the hot water is supplied from the boiler through the connection member 12 for hot water and at the same time the water filled in the flexible tube 30 through the connection member 13 for water discharge is discharged by a pumping action, thereby expanding the expanded flexible tube 30. ) To circulate the hot water supplied.

In addition, when the reversal insertion is completed, the expanded soft tube 30 is in close contact with the inner wall of the conduit 2, so that the remaining water is completely discharged in the conduit 2 and the inflow of unknown water is also blocked. At this time, while maintaining the internal pressure of the expanded flexible tube 30 to remove the water contained in the air pressure and then supply the hot water through the hot water hose 25, as shown in Figure 8, the hot water hose 25 Hot water is sprayed through a plurality of through holes 28 to harden the soft tube 30.

When the soft tube 30 is thermally cured by hot water spraying, the amount of hot water required for curing may be minimized as well as the curing time may be shortened. When the injected hot water is cooled to some extent, the hot water in the flexible tube 30 is circulated while being discharged through the discharge hose 13. That is, in the case of hot water thermosetting, there is also a method of removing water in the expanded flexible tube 30 and curing it by hot water spraying method. Also, the hot water is cured by circulating the hot water after filling the soft tube 30 with water. There is a way.

When the hot water type thermosetting process is completed, the old pipe non-excavation repair work is completed by removing the pressure and water inside the pipe line 2 and cutting and opening both inlets of the pipe.

As described above, it is to be understood that, according to the specific embodiments of the present invention, the present invention is not limited to the designated embodiments as defined in the appended claims without departing from the spirit and scope thereof.

As described above, according to the present invention, by inverting the flexible tube using a combination of air pressure and water pressure, the flexible tube can be completely compressed into the pipe irrespective of unknown residual water or infiltration water in the pipe, and the length of the construction and the pipe Even if the aperture size is changed, the flexible tube reversing container does not need to be manufactured separately, so the efficiency is excellent.

In addition, by inverting and inserting the soft tube by using both air pressure and water pressure, it is possible to prevent excessive water from being consumed during the reversal insertion, and at the same time, there is a risk of the phenomenon of rupture or rupture of the soft tube due to water pressure from the downward inclined pipe downward. Can be prevented.

In addition, the above-mentioned hot water thermosetting method by circulating the hot water of 80 ~ 85 ℃ Celsius, it is possible to reduce the consumption of fuel required to heat the hot water, shorten the circulation time of the hot water to increase the speed of thermal curing to speed up the construction In addition, the risk of rupture of the flexible tube can be minimized, so it is economically effective.

Claims (3)

In the soft tube reversal insertion adhesion device for repairing the sewage pipe by non-excavation, It includes a reversal insertion control unit 10 and a flexible tube carrying container 20, The reversal insertion control unit 10 is a guide reel 11 is rotatably mounted so that the soft tube 30 can slide well into the cylindrical outlet (15) therein, A hot water connecting member 12 and a water repelling connecting member 13 connected to the hot water hose 25 and the retracting hose 26 to the outside; Open and close sealing membrane 14 for sealing the expanded flexible tube 30, Pneumatic inlet 16 for injecting compressed air to both sides of the cylindrical outlet (15) and a hydraulic inlet (17) for supplying water, The flexible tube container 20 is wound reel 21 is rotatably mounted to wind the hose and rope for hot water and water discharge, and A guide reel 9 for guiding the soft tube 30 to slide smoothly into the inlet 18 of the reversal insertion control unit; Soft tube reversal insertion close contact device characterized in that it comprises a reversing speed controller 22 coupled to the support shaft 23 to control the reversing speed of the soft tube (30). The method of claim 1, A flexible tube reversal insertion close contact device, characterized in that configured to be inverted and inserted into the interior of the pipe (2) by using a combination of air pressure and water pressure. In the soft tube reversal insertion contact method for repairing the sewer pipe by non-excavation, Coupling the inlet port 18 of the reversal insertion control unit and the opening 19 of the soft tube container 20 to each other; The flexible tube on the outer circumferential surface of the cylindrical outlet 15 at the bottom of the reversal insertion control unit 10 via the guide reel 9 of the flexible tube container 20 and the guide reel 11 of the reversal insertion control unit 10. (30) upside down and banding, Inverting and inserting the flexible tube 30 into the conduit 2 by air pressure and water pressure filled into the outer circumferential surface of the flexible tube 30; Thermosetting the flexible tube 30 in close contact with the inner wall of the pipe line 2 by hot water supplied from the hot water hose 25 inserted into the soft tube 30; The soft tube 30 is filled with the hot water filled in the retreat by the pumping of the discharge hose 26, characterized in that it comprises a flexible tube inverted insert close contact method.