KR100719438B1 - Apparatus for repairing sewer pipe and heating unit - Google Patents

Abstract

The repair device for a pipe according to the present invention directly cures a tube impregnated with a thermosetting resin through a built-in heating wire, thereby facilitating generation of heat for curing the tube and minimizing heat loss.

Description

Apparatus for repairing sewer pipe and heating unit

1 is a cross-sectional view showing a pipe repair apparatus according to the present invention

Figure 2 is a view showing a sealing unit of the piping repair apparatus according to the present invention

Figure 3 is a front view showing the fixing mechanism of the sealed unit according to the present invention

4 is a side cross-sectional view of a tube according to the present invention.

5 is a front sectional view showing a tube according to the present invention;

6 is a side view showing a heating wire of the tube according to the first embodiment of the present invention;

Figure 7 is a front view showing the connection socket of the tube according to the present invention

8 to 12 is a process diagram showing the piping repair method according to the invention,

8 is a flow chart illustrating a piping repair method according to the present invention

9 is a cross-sectional view showing the tube arrangement step of the piping repair method according to the invention

10 is a cross-sectional view showing the sealing unit connection step of the piping repair method according to the invention

11 is a cross-sectional view showing the air injection step of the piping repair method according to the invention

12 is a cross-sectional view showing the hot wire connection step of the piping repair method according to the invention

13 is a side view showing a tube according to a second embodiment of the present invention;

14 is a cross-sectional view showing a piping repair apparatus according to a third embodiment of the present invention

<Explanation of symbols on main parts of the drawings>

10: piping 20: tube

30: inlet closure unit 32: body

33: insertion hole 34: rubber packing

35: outlet closure unit 37: insertion hole

39: rubber packing 40: hot wire unit

42: hot wire 44: guard

44a, 44b: ring 45, 46: socket

50: compressor 70: fixture

72: main body 74: drum

75: rope 76: wire

77: hook 90: connection unit

The present invention relates to a repair device for a pipe, and more particularly, to a repair device for a pipe that is easy to install and install in a work site by directly curing the thermosetting resin of a tube through heat generated from a heating wire embedded in the tube. .

Piping is a pipe that moves rainwater or domestic sewage, and is a structure that is installed by being buried underground. Therefore, when it is buried for a long time, cracks occur in the pipe. If the pipe ages in this way, the strength of the pipe decreases, cracks occur at the joints connecting the pipes, and sedimentation occurs in the pipes in which the settlement occurs, thereby obstructing the flow of sewage.

Therefore, the old pipes need to be excavated to replace the entire pipe by digging the ground or to repair the pipe through a separate process. Since the pipe replacement method is expensive and time-consuming, repairing the pipe without digging the pipe is currently mainly developed.

Here, the pipe has been repaired using the SET method developed in the conventional INA acquisition crop, and the biggest feature of the SET method is that after placing a tube impregnated with a thermosetting resin inside the pipe, blowing hot hot air into the tube. The tube is brought into close contact with the inner wall of the lower tube and the tube is cured.

However, the conventional pipe repair method has to continuously inject hot hot air into the tube for a predetermined time in order to cure the tube, thereby requiring a device such as a boiler, a generator, and a compressor for generating the hot air. have.

In addition, the conventional plumbing repair method has a problem that the heat loss is not only large because the hot air is continuously supplied to prevent the air from cooling inside the tube, and the noise generated in the process of supplying the hot air into the tube is considerably large. .

In addition, in the conventional pipe repair method, when the length of the tube is long, a temperature difference between the temperature in which hot air is injected and the temperature in which hot air is discharged is severely generated, which not only hardens the tube uniformly but also causes a long curing time of the tube. There is this.

The present invention has been made to solve the above problems, by directly curing the thermosetting resin of the tube through the heat generated from the heating wire embedded in the tube to provide a repair device for the pipe easy to install and install in the workplace. Its purpose is.

A piping repair apparatus according to a first aspect of the present invention is a nonwoven fabric impregnated with a liquid thermosetting resin, a tube including a film disposed on an inner surface of the nonwoven fabric, and a heat source disposed on the nonwoven fabric and applied by an applied power source. It may include a heating wire for generating.

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The piping repair method according to the second aspect of the present invention is a nonwoven fabric impregnated with a liquid thermosetting resin, a tube including a film disposed on an inner surface of the nonwoven fabric, and a heat source disposed on the nonwoven fabric and applied by an applied power source. Preparing a heating wire for generating the heating wire, and installing a tube in which the heating wire is disposed (S10); Installing a sealed unit at each end of the tube (S20); Supplying a fluid therein such that the tube in which the sealing unit is installed is in close contact with an inner wall of the pipe (S30); Connecting the heating wire and a power line for supplying power to the heating wire (S40); Supplying a current to the heating wire may include the step of directly heating the tube (S50).

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing a piping repair apparatus according to the present invention, Figure 2 is a view showing a sealing unit of the piping repair apparatus according to the present invention, Figure 3 is a fixing mechanism of the sealing unit according to the present invention is shown 4 is a side cross-sectional view showing a tube according to the present invention, FIG. 5 is a front sectional view showing a tube according to the present invention, and FIG. 6 is a heating wire of the tube according to the first embodiment of the present invention. 7 is a front view showing a connection socket of a tube according to the present invention.

Pipe repair apparatus according to the present invention, as shown in Figure 1, the tube 20 is inserted into the pipe 10 and cured, respectively installed on both ends of the tube 20, the inside of the tube 20 Sealing units 30 and 35 to maintain a predetermined pressure, the heating wire 40 is inserted into the tube 20 impregnated with a thermosetting resin, and the predetermined pressure is provided in the tube 20. Compressor 50 for close contact with the tube 20 to the inner wall of the sewer pipe 10, and a power supply unit (not shown) for applying a predetermined power to the heating wire (40).

As shown in FIGS. 4 to 6, the tube 20 includes a nonwoven fabric 21 impregnated with a liquid thermosetting resin, a heating wire 40 installed on the nonwoven fabric 21, and the nonwoven fabric 21. It comprises a film 24 attached to the inner side of the).

The nonwoven fabric 21 is a material capable of impregnating more thermosetting resin, the heating wire 40 is installed on the nonwoven fabric 21, in this embodiment is installed inside the nonwoven fabric 21.

The film 24 is attached to the inner side of the cylindrical tube 20, and blocks the flow of the impregnated thermosetting resin and at the same time forms the inner surface of the tube 20 to minimize resistance when the sewage flows.

Thus, the film 24 is formed of a material such as polyurethane or polyester.

The heating wire 40 is a heating wire that generates heat by the applied current, the diameter is formed to 1mm, in this embodiment is arranged in a spiral along the axial direction of the cylindrical tube 20.

Here, when the heating wire 40 is formed in a spiral shape, only one heating wire 40 may be installed in the tube 20, and the number of sockets 45 and 46 installed at both ends of the heating wire 40. It is also minimized.

And the sockets 45 and 46 of the heating wire 40, as shown in Figure 7, one end 45 is formed in a male form, the other end 46 is formed in a female form so that they can be connected to each other do.

As shown in Figures 2 to 5, the sealing units 30, 35 are respectively installed at both ends of the tube 20 to seal the tube 20, the inlet sealing unit installed on the inlet side 30 and an outlet closure unit 35 installed on the outlet side.

Here, the inlet / outlet sealing unit 30, 35 is formed in a cylindrical shape, the inlet / outlet sealing unit 30, 35 to fix the tube 10 to the sealing unit 30, 35. The upper part of the fixing mechanism 70 for wrapping and fixing the end of the tube 10 is installed, the body 32 of the inlet / outlet sealing unit 30, 35, respectively, the air toward the tube 20 side An air inlet 31 for injecting is formed.

A fixing mechanism 70 for fixing the tube 20 is installed at an upper portion of the body 32 of the inlet / outlet sealing unit 30, 35, and the fixing mechanism 70 of the tube 20. It is fixed to the body 32 by winding the outer side.

Thus, as shown in FIG. 2 or 5, the fixing mechanism 70 includes a main body 72 fixed to the body 32, a drum 74 installed on the main body 72, and the drum. A rope 75 wound around 74 and a wire 76 connected to the rope 75 to wind and tighten the tube 20.

In this embodiment, the drum 74 is configured to operate by using a power tool (not shown) of the user in this embodiment. Alternatively, a general power device (not shown) may be installed and operated.

In addition, the drum 74 is installed inside the main body 72 and is rotated by the power tool, and the rope is installed outside the main body 72 to allow the rope 75 to be smoothly wound. It consists of an auxiliary drum 74b for guiding the moving direction of 75.

Thus, when the main drum 74a is rotated, the rope 75 wound around the main drum 74a is wound or unwound in both directions.

And both ends of the rope (75) is provided with a hook (77) to be fixed by hanging the wire (76) tightening the tube (20).

In order to fix the tube 20 more firmly, the tube 20 wraps the body 32 of the inlet / outlet sealing unit 30, 35, and then wraps the wire 76 by at least one round. It is preferable to operate the drum 74 of the fixing mechanism 70 after the 20 is brought into close contact with the body 32.

In addition, the lower side of the main body 72 of the fixing mechanism 70 and the body 32 is configured to be rotated by a predetermined angle coupled to the pin 71, the main body 72 only when using the fixing mechanism 70 It is preferable to stand upright.

1 again, the pipe repair apparatus according to the present invention is provided with a tube 20, a heating wire 40, a sealing mechanism 30, 35 in the pipe 10, the compressor 50 and the ground A connection unit 90 is installed to connect the compressor 50 and the closure mechanism 30, 35.

Here, the air compressed by the compressor (50) is connected to the connection unit (90) through a hose (92), and the connection unit (90) is again connected to the inlet closure unit (30), and the inlet closure unit The compressed air injected through the 30 swells the inside of the tube 20.

In addition, when a liquid fluid is supplied into the tube 20, a pump may be used instead of the compressor 50.

On the other hand, the connection unit 90 measures the pressure and temperature inside the tube 20 through the air of the hose 92, and displays the measured pressure and temperature, and if the pressure is insufficient valves (not shown) Open and close) to move the air to the tube (20).

The power supply unit may be provided with a separate generator, but in this embodiment is directly connected to the heating wire 40 by receiving power directly from the telephone pole or transformer of the ground.

Here, the installation of the power supply unit can be appropriately selected according to the situation of the place where the contractor performs the plumbing repair work.

Hereinafter, the piping repair method according to the present invention in more detail as follows.

8 to 12 is a process diagram showing a pipe repair method according to the present invention, Figure 8 is a flow chart showing a pipe repair method according to the present invention, Figure 9 is a tube arrangement step of the pipe repair method according to the present invention 10 is a cross-sectional view showing a sealing unit connection step of the piping repair method according to the present invention, Figure 11 is a cross-sectional view showing an air injection step of the piping repair method according to the invention, Figure 12 A cross-sectional view showing a hot wire connection step of the piping repair method according to the invention.

As shown in Figures 8 to 12, the pipe repair method according to the present invention is a step (S10) and the tube 20, the tube 20 with a heating wire 40 is embedded in the pipe 10 and the tube 20 Step (S20) of installing each of the sealed units (30) and (35) at both ends of the), and supplying a fluid into the tube (20) in which the sealed units (30) and (35) are installed (S30), and Connecting the heating wire 40 and the power line 120 so that the current can be supplied to the heating wire 40 of the tube 20 (S40), and the current to the heating wire 40 inserted into the tube 20 It is configured to include a step (S50) of heating the thermosetting resin of the tube 20 by supplying.

Tube arrangement step (S10) is a process of installing the tube 20, which is impregnated with the thermosetting resin along the length of the pipe 10 with a built-in heating wire, the tube 20 is disposed in the pipe 10 The process is done by the operator.

Sealing unit connection step (S20) is a step of installing the inlet / outlet sealing units 30, 35 respectively at both ends of the tube 20, the sealing unit 30, 35 and the tube 20 The fixing is made by the fixing mechanism 70.

2 or 5, the operator inserts the sealing unit 30, 35 body 32 into the cylindrical tube 20, the body 32 and the tube 20 is A wire 76 is wound around the overlapped portion to fix the tube 20 primarily. The operator connects the hook 77 and the wire 76 installed at the end of the wire 76, and then rotates the main drum 74a installed on the main body of the fixing device 70 through a power tool. The rope 75 connected to the hook 77 is wound around the main drum 74a by the rotation of the main drum 74a. Here, the operator rotates the main drum 74a through a portable tool such as a portable tool, and when the wire 76 is sufficiently pulled to fix the tube 20, the worker rotates the main drum 74a. Stop.

On the other hand, although not shown in the main drum (74a) is rotated by the power tool is a one-way clutch is installed to prevent the rope 75 is unwinding, the configuration of the one-way clutch is a general configuration, so a detailed description Omit.

In addition, the fixing of the outlet sealing unit 35 and the tube 20 also omits the same detailed description as described above.

Fluid supply step (S30) is a step for injecting air into the tube 20 to close the outer surface of the tube 20 to the inner surface of the pipe 10, the injection of the air is the compressor (50) Is done through.

In this case, when the connection between the tube 20 and the sealing units 30 and 35 is completed, the worker may connect the compressor 50 and the connection unit 90 and the connection unit 90 and the sealing unit 30 and 35 to each other. When the hose 95 is connected and the connection of the hose 95 is completed, the operator injects the compressed air generated by operating the compressor 50 into the tube 20.

Then, the connection unit 90 senses the temperature and pressure inside the tube 20 through the hose 92, and when the tube 20 is sufficiently inflated and in close contact with the pipe 10 (S40). ).

Hot wire connection step (S40) is a step of connecting the heating wire 40 and the power line 120 embedded in the tube 20, the power line 120 and the heating wire 40 through the socket 45, 46 Connected.

In the heating step (S50), the operator inputs power to the heating wire 40 to heat the heating wire 40 to directly heat the thermosetting resin of the tube 20.

In this case, the tube 20 is hardened by heat generated by the heating wire 40, and thus heat loss is minimized. The compressor 50 allows the tube 20 to be in close contact with the pipe 10. The inside of the tube 20 is maintained at a predetermined pressure.

In particular, the temperature inside the tube 20 is preferably maintained at 60 ~ 80 ℃ that the thermosetting resin is cured stably.

When the tube 20 is cured after the heating step S50, the worker cuts the exposed portion of the manhole 110 by installing the sealing units 30 and 35, and a separate drilling robot (not shown). Through drilling the connecting portion of the lower pipe 10 and the sewer 15 connected to the home to complete the construction.

On the other hand, Figure 13 is a side view showing a tube according to a second embodiment of the present invention, a plurality of hot wire 45 of the tube 20 according to the second embodiment is formed radially on the circumferential surface of the tube 20 do.

Thus, when the heating wire 45 is installed in this way, the production of the tube 20 is easy, and the plurality of heating wires 45 are connected to respective power lines at both ends of the tube 20.

Although not shown, the plurality of heating wires 45 may be integrated into one and connected to one power line.

Hereinafter, since the repairing method of the pipe according to the second embodiment is the same as the first embodiment, a detailed description thereof will be omitted.

14 is a cross-sectional view showing a piping repair apparatus according to a third embodiment of the present invention.

As shown in FIG. 14, the third embodiment is the same as the first embodiment except that the repair apparatus is configured to repair only a part of the pipe 10 in the first embodiment.

Hereinafter, since the repairing method of the pipe according to the third embodiment is the same as the first embodiment, a detailed description thereof will be omitted.

The repairing apparatus for a pipe according to the present invention directly cures a tube impregnated with a thermosetting resin through a hot wire, thereby facilitating generation of heat for curing the tube and minimizing heat loss.

In addition, the repair device for the pipe according to the present invention hardly generates noise because it hardens the tube using heat generated from a hot wire, unlike a conventional hot air, thereby making it easy to work at night.

In addition, the repair device for the pipe according to the present invention has an effect that is easy to move because the number and volume of the equipment is reduced since the boiler is not used as compared to the conventional method.

In addition, since the repair device for piping according to the present invention hardens the tube by using heat generated by the power source, since the power can be directly supplied from the surrounding area where the pipe is installed, a separate boiler is not required as in the prior art, and the entire apparatus is simplified. It is effective.

In addition, the repairing apparatus of the pipe according to the present invention generates the same heat in the entire tube to harden the tube, thereby maintaining the curing time of the tube uniformly.

Claims (5)

A tube comprising a nonwoven fabric impregnated with a liquid thermosetting resin, and a film disposed on an inner side of the nonwoven fabric; And a heating wire disposed on the nonwoven fabric and generating heat by an applied power source. The method according to claim 1, The heating wire is a pipe repair device, characterized in that formed in a spiral along the circumferential surface of the tube. The method according to claim 1, The heating wire is a pipe repair device, characterized in that formed long in the longitudinal direction of the tube. The method according to claim 1, The heating wire is a pipe repair device disposed inside the nonwoven fabric. Preparing a nonwoven fabric impregnated with a liquid thermosetting resin, a tube including a film disposed on an inner surface of the nonwoven fabric, a heating wire disposed on the nonwoven fabric and generating heat by an applied power source; Installing the tube in which the heating wire is disposed (S10); Installing a sealed unit at each end of the tube (S20); Supplying a fluid therein such that the tube in which the sealing unit is installed is in close contact with an inner wall of the pipe (S30); Connecting the heating wire and a power line for supplying power to the heating wire (S40); Supplying a current to the heating wire to directly heat the tube (S50) repair method comprising a.

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