JP3413633B2 - Pipe inner surface repair equipment - Google Patents

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 sewer such as a buried hard vinyl chloride pipe, a fume pipe, and a steel pipe, and more particularly, it is photocured by a lamp for emitting light energy. TECHNICAL FIELD The present invention relates to a device capable of preventing abnormal heating of a water-sealant and the like and repairing it quickly and safely.

[0002]

2. Description of the Related Art Using a lamp for emitting light energy,
As a device for joining a cylindrical lining laminate containing a photocurable water-sealing agent to the inner wall surface of a pipe to be repaired, 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 press-contacting the laminate to the inner wall of the pipe. The lining material is cured by radiating light energy from the lamp that is the source. The latter also introduces a hose-type flexible lining laminate into the passage and then feeds compressed air into it to keep the laminate pressed against the inner surface of the conduit. Then, the lining laminate is cured by the light energy of the lamp. At this time, a plurality of lamps, which are light emitting sources, are connected to each other and moved at a constant speed in the lining laminate. Further, the air in the laminate is discharged to the outside to carry out the heat generated in the curing process of the resin as the water sealant.

[0003]

Since the former US patent utilizing light energy uses water as a pressure medium, there is a drawback that light energy is absorbed by the water and a good material cannot be completely cured. In addition, the latter Japanese Patent Fair 7-4
The lining device of No. 1670 supplies compressed air into the flexible lining laminated body, presses the lining laminated body into the passage, and causes the compressed air to flow out to an abnormally high temperature inside. Is to prevent. However, in order to let the compressed air in the lining laminate flow out to the outside to lower the internal temperature by the lamp, it is necessary to discharge the compressed air commensurate with the temperature increase. Therefore, when more light energy is released to shorten the curing time, the amount of compressed air released to the outside must be increased accordingly. Then, there is a drawback that the pressure inside the laminated body for lining cannot be stably maintained, and its control is troublesome. Therefore, the present invention is intended to rapidly cure the photocurable water-sealing agent by light energy, and to provide a pipe inner surface repairing device that stabilizes the pressure in the sealed flexible tubular pressurizing body and is easy to control the pressure. The following constitution is adopted to solve the problem.

[0004]

SUMMARY OF THE INVENTION A tube inner surface repairing device of the present invention comprises an airtight container 1 having optical transparency and rigidity, and a lamp 2 for emitting light energy housed in the airtight container 1 with a space. And a light-transmitting airtight means to which a supply / exhaust means 3 for controlling the temperature inside the container for supplying air into the airtight container 1 and a flexible repair material 4 containing a photocurable water-sealing agent are attached. A flexible tubular pressure body 5, or a laminated structure 14 in which the flexible repair material and the flexible tubular pressure body itself are integrated, and the flexible tubular pressure body 5 with both ends closed. Supplying compressed air to the inside of the laminated structure 14,
The flexible repair material 4 or the laminated structure 14 is provided with a pressurizing means 6 for press-contacting the inner surface of the pipe, and the airtight container 1 is inserted into the flexible tubular pressurized body 5 or the laminated structure 14. The container temperature adjusting air supply / exhaust means 3 and pressurizing means 6
And are configured to be controlled independently and independently.

In addition to the structure of the first aspect of the invention, the second aspect of the invention includes a pair of body side lids 7 having both ends of the airtight vessel 1 each having a diameter larger than the maximum diameter of the airtight vessel 1. Both ends of the light-transmissive flexible cylindrical pressurizing body 5 are air-tightly connected to the outer peripheries of both the main body side lids 7, and the flexible cylindrical pressurizing body 5 is connected to the outer peripheries of the flexible tubular pressurizing body 5 by the airtight. The flexible repair material 4 is detachably attached. Further, traveling wheels 8 are provided on the outer periphery of the pair of main body side lids 7 in a protruding manner. A preferred embodiment of the first invention is that the airtight container 1
Is configured to be movable in the flexible pressing body 5 or the laminated structure 14 in the axial direction thereof.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a vertical cross-sectional view of the present apparatus, FIG. 2 is a right side view thereof, FIG. 3 is a vertical cross-sectional view showing a usage state thereof, and FIG. 4 is a vertical cross-sectional view of an inner surface of a pipe repaired by the present apparatus. is there. In this tube inner surface repairing device, a pair of main body side lids 7 are fixed to both ends of a slender airtight container 1 having a lamp 2 inside via connecting pipes 9. Further, both ends of the flexible tubular pressurizing body 5 are airtightly joined to the outer periphery of the main body side lid 7. The airtight container 1 has a transparent plastic or glass transparent tube 1b and a container side lid 1a whose both ends are closed, and a main body side lid 1a via a connecting pipe 9 having rigidity to the container side lid 1a. 7 are connected. The socket portion of the lamp 2 is fixed to each container side lid 1a. Then, one end of the power cable 1c is connected to the socket portion, and the other end is connected to the cable connector 17.

A power supply cable for connection (not shown) is connected to the cable connector 17, whereby electric power is supplied to light the lamp 2. Also, the connecting pipe 9
Has an air passage 19 formed therein, one end of which penetrates the container side lid 1a and the other end of which penetrates the center of the main body side lid 7. An air connector 16 is provided at the open end of the air passage 19 on the right side, and the connector of the air hose 18 is connected thereto. The tip of the air hose 18 is connected to a compressed air source such as a compressor via a control valve (not shown). And, the supply / exhaust means 3 for controlling the temperature inside the container is constituted by them. In this example, the air passage 19 of the left main body side lid 7 is opened to the outside.

Next, an opening is formed in the peripheral portion of the right main body side lid 7, and the air connector 16 is connected to the opening. An air hose 18 is connected to the air connector 16, and is connected to an air pressure source such as a compressor via a control valve (not shown) separate from the container temperature adjusting air supply / exhaust means 3. And the pressurizing means 6 is comprised by it. On the outer periphery of the main body side lid 7, the bracket 10 is provided in the radial direction.
Is provided in a protruding manner, and the wheel 8 is rotatably supported on the wheel. Next, the flexible tubular pressure member 5 is made of a light-transmissive rubber material that can expand and contract. Further, a wire locking ring 20 is provided on the bracket 10 so as to move the device to an appropriate position on the repaired pipe. In some cases, a camera wheel is connected to the bracket 10 and the device is driven to move the device to an appropriate position on the repaired pipe.

[0009]

[How to use] Air hose 18 is connected to each air connector 16 and pressurizing means 6 and air supply / exhaust means 3 for controlling the temperature inside the container 3
And the power cable is connected to the cable connector 17. Then, the flexible repair material 4 is wound around the outer periphery of the flexible tubular pressure body 5. The width of the flexible repair material 4 is slightly longer than the inner peripheral surface of the repaired pipe 12.
The flexible repair material 4 contains a water sealant made of a photocurable resin. Therefore, this flexible repair material 4
With the outer circumference attached, stop the outer circumference with a rubber ring or the like. Then, this device is inserted into the repaired position of the repaired pipe 12 as shown in FIG. 3, and compressed air is supplied to the inside of the flexible tubular pressurizing body 5 by the pressurizing means 6. Then, the flexible tubular pressurizing body 5 is expanded, and the flexible repair material 4 coated on the outer periphery thereof is pressed against the inner peripheral surface of the repaired pipe 12. Next, the lamp 2 is turned on, and the flexible repair material 4 is irradiated with light energy through the flexible tubular pressure body 5.

At this time, the inside 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 controlling the in-container temperature is appropriately opened, and air is sent into the airtight container 1 to discharge the high temperature air in the airtight container 1 to the outside. A temperature sensor 21 is provided inside the airtight container 1, and an output signal from the temperature sensor 21 controls the air supply / exhaust means 3 for adjusting the temperature inside the container. That is, a control valve (not shown) of the container temperature adjusting air supply / exhaust means 3 is turned on / off, and the inside of the airtight container 1 is controlled to be equal to or lower than the set temperature. The control valve is ON,
Instead of the OFF control, the opening degree of the throttle control valve may be adjusted. When the flexible repair material 4 is cured, the lamp 2
Is turned off, and the compressed air in the flexible tubular pressurizing body 5 is discharged to the outside. This is done by switching a switching valve (not shown) connected to the air hose 18 to the air discharge side. Then, the device is
Pull out from 12 to complete the repair work.

[0011]

Other Embodiments of the Invention Next, FIG. 5 shows a second example of the present apparatus, which is different from the example in FIG. 1 in that two airtight containers 1 are connected in series. Thereby, light energy can be emitted more uniformly.
Next, FIG. 6 shows another example of the present apparatus, in which the airtight container 1 can be moved in the axial direction within the flexible tubular pressure body 5. That is, by moving the air pipe 13 in the axial direction, the airtight container 1 fixed to it is moved. Thereby, the repaired portion of the repaired pipe can be made relatively long.

Next, FIG. 7 shows still another example of the present apparatus, in which the laminated structure 14 is for a hose type flexible lining, which itself has airtightness and is photocured. Containing a resin. Closing bodies 15 are arranged at both ends of such a laminated structure 14 to close both sides thereof. Then, the airtight container 1 is inserted into the laminated structure 14, and the air pipes 13 led to both ends of the airtight container 1 are passed through the closing body 15. The penetrating portion is hermetically sealed.
A lamp 2 is housed in the airtight container 1 as in the above example, and a power cable (not shown) led into the air pipe 13 is connected to the lamp 2. Further, the pressing means 6 is connected to at least one of the closing bodies 15. Then, the compressed air is supplied into the laminated structure 14 to fix the laminated structure 14 to the pipe to be repaired.
Press the inner surface of 12. Then, the lamp 2 is turned on, the air flowing through the air pipe 13 is adjusted, and the temperature inside the airtight container 1 is appropriately maintained. Then, the air pipe 13 is moved in the axial direction of the pipe 12 to be repaired, and each part of the laminated structure 14 is sequentially cured. At this time, the high temperature air generated in the airtight container 1 is discharged to the outside by the air pipe 13 connected thereto.

[0013]

According to the pipe inner surface repairing device of the present invention, the airtight container 1 is provided with the flexible tubular pressure member 5 or the laminated structure 14.
In the airtight container 1 having the lamp 2, the air supply / exhaust means 3 for controlling the temperature inside the container and the pressurizing means 6 such as the flexible tubular pressurizing body 5 are separately and independently controlled. It is possible to prevent overheating and effectively prevent the temperature of the flexible tubular pressure member 5 or the laminated structure 14 from rising abnormally. Thereby, a highly reliable pipe inner surface repairing device can be provided. That is, the air supply / exhaust means 3 for controlling the temperature inside the container, which is separate from the pressurizing means 6, controls the inflow / outflow of the air in the airtight container 1 and controls the abnormal temperature rise by the inflow / outflow of a relatively small amount of air. Further, unlike the conventional apparatus, it is not necessary to discharge the compressed air inside the laminated structure 14 or the like to the outside, so that it is easy to keep the internal pressure within a certain range. Therefore, during curing of the photocurable water-sealing agent, they can be surely pressure-bonded to the inner surface of the pipe to be repaired with a constant pressure, and the bonding can be reliably performed.

Next, a pair of body side lids 7 having a diameter larger than the maximum diameter of the airtight vessel 1 are connected to both ends of the airtight vessel 1, and the outer circumference of the body side lid 7 is light-transmissible and compressible and flexible. Both ends of the tubular pressurizing body 5 are airtightly connected, and the flexible repair material 4 is detachably attached to the outer periphery of the flexible tubular pressurizing body 5 in the pipe inner surface repairing device. The relative position between the airtight container 1 and the flexible tubular pressurizing body 5 can be specified, and the light energy can be uniformly applied to the inner peripheral surface of the repaired tube. Thereby, the reliability of repair can be improved. Further, in the case where the airtight container 1 is configured so as to be movable in the axial direction of the flexible cylindrical pressurizing body 5 or the laminated structure 14, each portion in the axial direction of the flexible repair material is uniformly irradiated with light energy. can do.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a main pipe inner surface repairing device.

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

FIG. 3 is a vertical cross-sectional view showing the same usage state.

FIG. 4 is a vertical cross-sectional view of the inner surface of the pipe repaired by the present device.

FIG. 5 is a vertical cross-sectional view of another example of the present device.

FIG. 6 is a vertical cross-sectional view of still another example of the present device.

FIG. 7 is a vertical cross-sectional view of still another example of the present device.

[Explanation of symbols]

1 airtight container 1a Container side lid 1b transparent tube 1c power cable 2 lamps 3 Air supply / exhaust means for controlling the temperature inside the container 4 Flexible repair material 5 Flexible tubular pressure body 6 Pressurizing means 7 Body side lid 8 wheels 9 connecting pipe 10 bracket 11 O-ring 12 Repaired pipe 13 Air pipe 14 laminated structure 15 occluder 16 air connector 17 cable connector 18 air hose 19 air passage 20 wire retaining ring 21 Temperature sensor

Claims (4)

(57) [Claims] 1. An airtight container 1 having optical transparency and rigidity.
A lamp 2 for emitting light energy, which is housed in the airtight container 1 with a space therebetween, an air supply / exhaust means 3 for controlling the temperature inside the airtight container 1, and light curing Airtight flexible tubular pressurizing body 5 to which a flexible repairing material 4 containing a water-sealant is adhered, or the flexible repairing material and the flexible tubular pressing body itself are integrated. And the flexible cylindrical pressurizing body 5 or the laminated structure 14 whose both ends are closed and compressed air is supplied to the flexible repair material 4 or the laminated structure 14 inside the pipe. And a pressurizing means 6 for press-contacting the inside of the container, and the airtight container 1 is inserted into the flexible cylindrical pressurizing body 5 or the laminated structure 14 to pressurize and supply with the supply / exhaust means 3 for controlling the temperature inside the container. A pipe inner surface repairing device configured to control the means 6 independently. 2. An airtight container 1 having optical transparency and rigidity.
A lamp 2 for emitting light energy, which is housed in the airtight container 1 with a space therebetween, a supply / exhaust means 3 for controlling the temperature inside the airtight container 1, for supplying air in and out of the airtight container 1; Both ends of the container 1 are connected to a pair of main body side lids 7 each having a diameter larger than the maximum diameter of the airtight container 1, and the light transmissible and flexible flexible cylinders are attached to the outer peripheries of the main body side lids 7. Both ends of the flexible pressurizing body 5 are airtightly connected, and the flexible repair material 4 containing a photocurable water-sealing agent is detachably attached to the outer periphery of the flexible cylindrical pressurizing body 5. A pressurizing means 6 for supplying compressed air into the flexible tubular pressurizing body 5 to press the flexible repair material 4 against the inner surface of the pipe. Insert into the pressure body 5 to supply and discharge the temperature inside the container. Configuration the inner surface repairing device to control the means 3 and the pressurizing means 6 independently. 3. The pipe inner surface repairing device according to claim 2, wherein traveling wheels 8 are provided on the outer periphery of the pair of main body side lids 7. 4. The pipe inner surface repair device according to claim 1, wherein the airtight container 1 is configured to be movable in the axial direction of the flexible pressure member 5 or the laminated structure 14.