JPH10286882A - Repair device for inner face of pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a repair device for the inner face of a pipe in which while contact-bonding flexible repair material having a water sealing agent consisting of photosetting resin solution on the inner face of a pipe, the water sealing agent is cured by a lamp, and excess heat generated by the lamp is efficiently released to the outside of the device, and also water in the pipe is prevented from infiltrating into the device and reliability is high. SOLUTION: A flexible cylindrical pressure body 5 is arranged between a pair of mutually separated side covers 7, 7a of the body. An airtight vessel 1 having light transmission and rigidity is held in the flexible cylindrical pressure body 5. A lamp 2 is arranged in the airtight vessel 1 and both an air supply passage 19 and an exhaust passage 19a are perforated in the side cover 7 on one side. The air supply passage 19 is opened in one end of the airtight vessel 1 and also the exhaust passage 19a is opened in the other end of the airtight vessel 1. Furthermore, pressurized air is encapsulated to the inside of the flexible cylindrical pressure body 5 so as to freely come in and out through the side cover 7 on one side. Control of air in the inside of the flexible cylindrical pressure body 5 and control of flow of air in the inside of the airtight vessel are performed individually and independently.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for repairing an inner peripheral surface of a sewer, such as a hard vinyl chloride pipe, a fume pipe, or a steel pipe, which is buried, with a water sealant made of a photocurable resin liquid. Also, the present invention relates to an apparatus capable of preventing a water sealant made of a photo-curable resin liquid from being abnormally overheated by a lamp for releasing light energy during repair, and performing repair quickly and safely.

[0002]

2. Description of the Related Art Using a lamp for emitting light energy (mainly using an ultraviolet ray emitting lamp), a laminate for a tubular lining containing a water sealant made of a photocurable resin liquid is applied to the inner peripheral surface of a pipe to be repaired. As a joining device, US Pat.
No. 066, Japanese Patent Publication No. 7-41670 and others have been proposed. The former relates to a method for lining a pipeline, in which a hose-type flexible lining laminate is inserted into a passage, and then water is used as a pressure medium for pressing the laminate against the inner wall of the pipe, and light emission is performed. The lining laminate is cured by emitting light energy from a lamp as a source. The latter introduces a hose-type flexible lining laminate into the passage, and then sends compressed air inside to keep the laminate pressed against the inner surface of the pipeline. Then, the lining laminate is cured by the light energy of the lamp. At this time, a plurality of lamps, which are light emission sources, are connected and moved at a constant speed in the lining laminate. Further, the air inside the laminate is gradually discharged to the outside, and the heat generated during the curing process of the resin as the water sealant is carried out.

[0003]

The former U.S. Patent which utilizes light energy has a drawback that since water is used as a pressure medium, the light energy is absorbed by the water and a satisfactory material cannot be completely cured. In addition, the latter Tokuhei 7-4
The lining device of No. 1670 supplies compressed air into a flexible lining laminate, and presses the lining laminate into a passage while discharging the compressed air to the outside. It is to prevent. However, in order to discharge the compressed air in the lining laminate to the outside and reduce the internal temperature by the lamp, it is necessary to discharge the compressed air in proportion to the temperature rise. Therefore, when the curing time is shortened by emitting more light energy, the amount of compressed air emitted to the outside must be increased accordingly. In this case, the pressure inside the lining laminate cannot be stably maintained, and the control thereof is troublesome. In addition, during repair of sewer mains, sewage and groundwater often flow from the upstream side. Therefore, it is necessary to prevent such water such as sewage from entering the inside of the repair device, and to maintain the inside of the repair device under predetermined conditions. Therefore, an object of the present invention is to solve these problems.

[0004]

The pipe inner surface repairing device of the present invention comprises a pair of main body side covers 7,
7a, a flexible cylindrical pressurizing member 5 made of a light-transmitting rubber material capable of expanding and contracting in the radial direction, and a main body side lid 7, 7a inside the flexible cylindrical pressurizing member 5;
Airtight container 1 which is supported by the
A lamp 2 for emitting light energy located in the hermetic container 1, an air supply passage 19 opening at one end in the hermetic container 1 through one of the main body side lids 7, An exhaust passage 19a which is opened at the other end of the airtight container 1 through the main body side lid 7 to draw out the superheated air in the airtight container 1; The air supply / exhaust means 3 for adjusting the temperature of the inside of the container, which sends cooling air into and out of the hermetic container 1 via the passage 19a, and the cover 7 for the flexible tubular pressurized body 5 through the one main body side lid 7. Pressurizing means 6 for enclosing pressurized air therein so as to be able to freely enter and exit, so that the supply / exhaust means 3 for temperature adjustment in the container and the pressurizing means 6 can be controlled independently. .

According to a second aspect of the present invention, the hermetic container 1 has a transparent tube 1b and a pair of container side covers 1a for closing both ends in the longitudinal direction of the transparent tube 1b. The air supply passage 19 is opened, and the exhaust passage 19a is opened in the other container side lid 1a. Further, in the invention according to claim 3, the one main body side cover 7 is located downstream of the repaired pipe 12 in the fluid flow direction.

[0006]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional view of the present apparatus,
FIG. 2 is a right side view, FIG. 3 is a longitudinal sectional view showing the use state, and FIG. 4 is an explanatory view showing another use state of the present apparatus. The pipe inner surface repairing device is a lamp 2 for emitting ultraviolet light.
A pair of body-side lids 7 and 7a are fixed to both ends of the elongated airtight container 1 in which is mounted a via a connecting pipe 9. And
Both ends of the flexible cylindrical pressure member 5 are hermetically joined to the outer periphery of the main body side covers 7, 7a. The hermetic container 1 has a transparent tube 1b made of a transparent plastic or glass and a container side lid 1a whose both ends are closed. Each container side lid 1
The lamp 2 is supported by a. One end of a power cable 1c is connected to the socket of the lamp 2, and a cable connector 17 is connected to the other end of the cable 1c.

[0007] A connection power cable (not shown) is connected to the cable connector 17, and power is supplied thereby to turn on the lamp 2. The connection pipe 9 has supply / exhaust passages 19 and 19a therein, and one end of the supply passage 19 passes through the container side lid 1a on the right side in the figure.
Open inside the airtight container 1. And the left container side lid 1a
The distal end of the exhaust passage 19a parallel to the airtight container 1 passes through the right main body side lid 7 through the connecting pipe 9 and the main body side lid 7a, and is opened to the outside via a not-shown manual throttle valve or the like. .
The air connector 16 is located at the right end of the air supply passage 19 on the right side.
Is provided, and a mounting end of the air hose 18 is connected thereto. The air hose 18 passes through a control valve (not shown),
Connected to a compressed air pressure source such as a compressor. These components constitute a supply / exhaust means 3 for adjusting the temperature in the container.

Next, a through hole is provided in the peripheral portion of the right main body side cover 7, and another air connector 16 is connected to the through hole. Then, an air hose 18 is connected to the air connector 16.
Is connected to the supply / exhaust means 3 for adjusting the temperature in the container.
Air hose 18 via a control valve (not shown)
Is connected to a compressed air source such as a compressor.
Thereby, the pressurizing means 6 is constituted. In this example, three brackets 10 protrude in the radial direction on the outer periphery of the pair of main body side covers 7, 7a, and wheels 8 are rotatably supported on the brackets 10, respectively. Next, the flexible cylindrical pressurizing member 5 is made of a light-transmitting rubber material that can expand and contract. Also bracket 10
Is provided with a wire locking ring 20 which can be pulled by a wire when the device is moved to an appropriate position on the repaired pipe. In some cases, a camera car or the like is connected to the bracket 10 and the apparatus is moved to an appropriate position of the repair target pipe by driving the camera car or the like.

[0009]

[Usage] Connecting the air hose 18 to each air connector 16, pressurizing means 6 and supply / exhaust means 3 for adjusting the temperature in the container
And a power cable is connected to the cable connector 17. Then, the flexible repairing material 4 is wound around the outer periphery of the flexible cylindrical pressurizing member 5. The width of the flexible repair material 4 is slightly longer than the inner peripheral surface of the repair target tube 12. The flexible repair material 4 contains a water sealant made of a photocurable resin. Then, the outer periphery of the flexible repairing material 4 is stopped by a rubber ring or the like in a state of being attached to the outer periphery of the flexible tubular pressurizing member 5. Then, this device is inserted into the repair position of the repair pipe 12 as shown in FIG.
Thus, compressed air is supplied to the inside of the flexible tubular pressurized body 5. Then, the flexible tubular pressurizing body 5 is expanded, and the flexible repairing material 4 coated on the outer periphery thereof is
Is pressed against the inner peripheral surface of. At this time, the left main body side cover 7a is located on the upstream side, and water 22 exists on the upstream side of the present apparatus.
However, since the left end of the apparatus is closed by the main body side lid 7a, there is no possibility that water may enter the apparatus and cause a failure.

Next, the lamp 2 is turned on, and the flexible repairing material 4 is irradiated with light energy through the flexible tubular pressurizing member 5. At this time, the interior of the airtight container 1 becomes hot due to the lighting of the lamp 2. Therefore, the control valve of the air supply / exhaust means 3 for adjusting the temperature in the container is opened appropriately, air is sent into the airtight container 1 through the air supply passage 19, and the high-temperature air in the airtight container 1 is discharged to the right through the exhaust passage 19a. From the main body side cover 7 to the outside. A temperature sensor 21 is provided inside the airtight container 1, and the output signal of the temperature sensor 21 is provided in the airtight container 1.
Is controlled. That is, a control valve (not shown) of the supply / exhaust means 3 for adjusting the temperature in the container is turned on and off, and the airtight container 1 is turned on.
Is controlled so that the inside temperature is equal to or lower than the set temperature. Note that, instead of the ON / OFF control of the control valve, the opening of the throttle control valve may be adjusted.

If there is a possibility that the temperature inside the flexible tubular pressurized body 5 may rise excessively, a not shown in FIG. A through hole may be provided, and a control valve may be provided therein. Next, the flexible repairing material 4 is irradiated with the light of the lamp 2.
Is cured, the lamp 2 is turned off, and the compressed air in the flexible tubular pressurized body 5 is released to the outside. This is performed by switching a switching valve (not shown) connected to the air hose 18 to the air discharge side. Then, the apparatus is pulled out of the repair pipe 12, and the repair work is completed.

[0012]

Next, FIG. 4 shows a second embodiment of the present apparatus. This apparatus comprises a main pipe 12a and a branch pipe 12b of a pipe 12 to be repaired.
To repair the connecting part. To this end, a deformed cylindrical portion 5a projecting in a T-shape or a T-shape is integrally formed on the outer periphery of the central portion of the flexible cylindrical pressurizing member 5. Further, in this example, the reflecting plate 23 for reflecting light energy inside the odd-shaped cylindrical portion 5a is arranged on the lower surface side and both sides of the airtight container 1 in the figure.

[0013]

In the pipe inner surface repairing apparatus of the present invention, the air supply passage 19 and the exhaust passage 19a communicate with one end and the other end of the hermetic container 1 through one main body side lid 7, and the inside of the container is Since the temperature control air supply / exhaust means 3 is provided, the main body side lid 7 is arranged downstream of the pipe, so that even if water such as drainage exists on the upstream side, the temperature adjustment air supply / exhaust in the container is not hindered. Means 3 can work. That is, the main body side lid 7 on the downstream side
Since the air supply passage 19 and the exhaust passage 19a communicate with each other, it is possible to prevent the drainage water on the upstream side from entering the flexible tubular pressurizing member 5 and the airtight container 1. In addition, the pressurizing means 6 also allows the pressurized air to be freely enclosed in and out of the flexible tubular pressurized body 5 via the one main body side cover 7 so that each air hose is connected to the one main body side. It can be collected on the lid 7 and is a operable tube inner surface repairing device with good operability.

Further, since the supply / exhaust means 3 for adjusting the temperature in the container and the pressurizing means 6 can be controlled separately and independently,
The air flow in the airtight container 1 can be controlled, and an abnormal temperature rise can be controlled by relatively small air flow. Moreover, since the air is circulated in the axial direction from one end to the other end in the airtight container 1, the temperature of each part in the airtight container 1 can be maintained uniform. Further, the air pressure inside the flexible tubular pressurizing member 5 does not change during the operation of the supply / exhaust means 3 for adjusting the temperature in the container, so that the pipe can be stably repaired.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a pipe inner surface repairing apparatus of the present invention.

FIG. 2 is a right side view of the same.

FIG. 3 is a longitudinal sectional view showing the same use state.

FIG. 4 is an explanatory view showing another usage state of the present apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Airtight container 1a Container side lid 1b Transparent tube 1c Power cable 2 Lamp 3 Supply / exhaust means for temperature adjustment in container 4 Flexible repairing material 5 Flexible cylindrical pressurizing body 5a Deformed cylindrical part 6 Pressurizing means 7, 7a Main body side Lid 8 Wheel 9 Connecting pipe 10 Bracket 12 Repair pipe 12a Main pipe 12b Branch pipe 16 Air connector 17 Cable connector 18 Air hose 19 Air supply passage 19a Exhaust passage 20 Wire locking ring 21 Temperature sensor 22 Water 23 Reflector 24 Bracket

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yuji Yamaoka 2-14-5 Katsuradai, Aoba-ku, Yokohama-shi, Kanagawa Prefecture (72) Inventor Shinkichi Ooka 1-15-123 Horinouchi, Suginami-ku, Tokyo

Claims (3)

[Claims] 1. A flexible cylindrical pressurizing member 5 made of a light-transmitting rubber material that is airtightly fixed to a pair of main body side covers 7 and 7a provided on both sides of the main body and is spaced apart from each other and is capable of expanding and contracting in the radial direction.
In the flexible cylindrical pressurizing body 5, the main body side cover 7,
7a, an airtight container 1 having light transmissivity and rigidity, a lamp 2 for emitting light energy positioned in the airtight container 1, and the airtight container 1 via one of the main body side lids 7. An air supply passage 19 that opens at one end of the inside of the inside, and the air heated at the other end inside the airtight container 1 that opens to the other end through the one body side lid 7 to the outside. An exhaust passage 19a to be led out; an in-container temperature regulating supply / exhaust means 3 for sending cooling air in and out of the airtight container 1 via the air supply passage 19 and the exhaust passage 19a; And a pressurizing means 6 for enclosing pressurized air in the flexible tubular pressurized body 5 so as to be able to enter and exit through the flexible tubular pressurizing means 7. 6 is a pipe inner surface repairing device configured to be able to control each of them independently. 2. The airtight container 1 according to claim 1, wherein the airtight container 1 has a transparent tube 1b and a pair of container-side lids 1a for closing both ends in a longitudinal direction of the transparent tube 1b.
A pipe inner surface repairing device having an opening 19 and the exhaust passage 19a opened in the other container side lid 1a. 3. The one-body-side cover 7 according to claim 1, wherein the one main body-side cover 7 is located downstream of the repaired pipe 12 in the fluid flow direction.
Is located on the pipe inner surface repair device.