KR200401279Y1 - An Apparatus for Repairing the Pipe of Radiation - Harden Type - Google Patents

Abstract

Provided is a radiation curable conduit repair device.

The present invention is an expansion member for expanding the outer surface of the body reinforcement to the radial direction by the compressed air injected into the body to contact the outer surface of the reinforcement to the inner surface of the conduit; A pair of brackets fixed to the left and right ends of the expansion member and having at least one air outlet port for injecting and discharging compressed air into the expansion member; Connecting shafts connected to both left and right ends of the left and right pairs of brackets to maintain a distance between the left and right pairs of brackets; A heat generating means positioned in the inner space of the expansion member and providing a heat source for hardening the reinforcement by radiating heat to the inner surface of the expansion member when power is applied; And a power applying unit for applying power to heat the heat generating means. It includes.

According to the present invention, the contacting reinforcement can be uniformly cured as a whole to increase the adhesive strength with the conduit, increase the heat absorption rate of the expansion member, shorten the curing time of the reinforcement, and increase the thermal efficiency.

Description

An Apparatus for Repairing the Pipe of Radiation-Harden Type}

The present invention relates to a device for repairing conduits, and more particularly, radiation that hardens the reinforcing material attached to the inside of the pipe to radiate cracks and damaged parts of the damaged pipe with radiant heat, thereby enabling easy and quick repair of the inside of the pipe. A curable conduit repair device.

In general, conduits buried underground, such as sewage pipes, sewer pipes, storm pipes, and box pipes, are cracked, broken, or separated from the connection between conduits due to aging of the pipe itself, subsidence of the ground, or fluctuations in earth pressure from the ground. Defects will occur. Therefore, the wastewater inside the conduit is discharged to the outside through such a defective portion to contaminate the water quality and the soil.

Accordingly, a method for repairing a faulty conduit is to dig into the ground from the upper ground of the fault spot to the point where the conduit is buried, to expose the conduit to the outside, and to repair the faulty conduit or to a new conduit. Replacement excavation conduit repair work was performed.

However, such excavation conduit repair work is not only difficult to excavate the ground itself, but also difficult to pinpoint the excavation point, and if the ground is paved with asphalt or concrete, it is removed and excavated again. It requires a lot of manpower and equipment for work, such as the hassle of packing work, and requires a relatively large area and a long time for excavation work, which is a great obstacle for traffic of general pedestrians or vehicles. There were problems such as giving.

In order to remedy these shortcomings, a non-excavation repair method is known that can easily repair damaged or defective parts of the conduit buried in the ground without digging the ground, and such non-excavation method can be moved within the conduit. After the device is inserted into the conduit through a manhole, etc., the device is moved to a broken or defective defect and remote control is used to repair the defective point. Various devices have been developed according to the state of.

Among the non-excavation methods, it is known that the ASS (Air Shooting System) method, which is performed by using a cylindrical repair device that the expansion member made of special rubber constituting the body portion, the reinforcement on the outer surface of the expansion member After moving to the repair point in the wound state, by injecting air into the expansion member to expand the expansion member, the reinforcement located on the outer surface is in close contact with the conduit, and the reinforcement is hardened to fully adhere to the conduit over time. It is to repair the defective part. Then, when the hardening of the reinforcing material is completed, the air in the expansion member is taken out to collect the discharge device is discharged again to the outside to be inserted into the conduit.

Such an ASS method is, for example, when a crack portion of about 10 cm radius occurs inside the conduit, so that the entire inner surface of the conduit around the defect is covered with a reinforcing material without the need to precisely set the repair target part. It does not require expensive equipment or complicated operation for precise control, so it is economical and flexible, and the expansion member is composed of special rubber that expands flexibly. There is an advantage in that it is possible to repair a wide variety of damages and defective parts such as pipe misalignment.

However, in the case of the ASS method using the reinforcement as described above, the reinforcement should be in close contact with the inner surface of the pipe for a predetermined time while maintaining the expansion state of the repair device until the reinforcement is cured.

Accordingly, the conventional conduit repair work has to maintain the expanded state of the expansion member for one or more days, there is a disadvantage that the time required for the repair work is long.

In addition, even if the device is removed after the reinforcing material is adhered to the conduit for at least one day, if the reinforcing material is sufficiently cured and does not adhere firmly to the inner surface of the conduit, the reinforcement adhered to the inner surface of the conduit is dropped due to the contaminants in the conduit or the wastewater flowing through the conduit. Manual work had to be done.

In order to solve this disadvantage, by attaching a plurality of heat transfer members to the entire inner surface of the expansion member and by transferring the heat generated from the heat transfer member to the reinforcement through the expansion member to accelerate the curing of the reinforcement to reduce the repair time This is known.

However, this conventional method can achieve the effect of shortening the curing time, but since the heat transfer member is provided as a separate member on the inner surface of the expansion member, the heat transfer member provided on the inner surface of the expansion member may be dropped during volume expansion. There is a very high possibility, there is a problem in that the method of coupling the heat transfer member to the inner surface of the expansion member in order to prevent falling very complicated.

In addition, the dropping of the heat transfer member is the higher the dropping frequency as the inner diameter of the conduit is larger, in particular, dropping of the heat transfer member in a large conduit of 600 to 1200mm or more is a high dropout frequency in a small conduit of 600mm or less, the conduit repair work There was a problem that was difficult to perform smoothly.

In addition, when the heat transfer member is dropped, the hardening of the reinforcement is made unevenly, resulting in poor adhesion of the reinforcement, and when the heat transfer member is damaged or damaged, the work of replacing the heat transfer member attached to the inner surface of the expansion member with a new one. This difficulty caused a problem that the work was excessively required.

Therefore, the present invention has been proposed to solve the conventional problems as described above, the purpose of the radiation cured conduit repair device that can increase the adhesive strength with the conduit by uniformly curing the reinforcing material in contact with the inner surface of the conduit as a whole. To provide.

Another object of the present invention is to provide a radiation cured conduit repair apparatus that can shorten the curing time of the reinforcement by increasing the heat absorption rate of the expansion member that transfers heat to the reinforcement, and increase the thermal efficiency.

Another object of the present invention is to provide a radiation-cured conduit repair device that is simple to use, easy to use, simple to maintain the equipment, the configuration of the heating source is easy to replace when damaged and damaged.

As a technical configuration for achieving the above object, the present invention,

An apparatus for repairing defects in a conduit by curing a reinforcement inserted into a conduit and contacting the inner surface of the conduit with a heat source,

An expansion member which expands the outer surface of the body on which the reinforcement is wound to radial direction by compressed air injected into the body and contacts the outer surface of the reinforcement to the inner surface of the conduit;

A pair of brackets fixed to the left and right ends of the expansion member and having at least one air outlet port for injecting and discharging compressed air into the expansion member;

Connecting shafts connected to both left and right ends of the left and right pairs of brackets to maintain a distance between the left and right pairs of brackets;

A heat generating means positioned in the inner space of the expansion member and providing a heat source for hardening the reinforcement by radiating heat to the inner surface of the expansion member when power is applied; And

A power supply unit for applying power to heat the heat generating means; It provides a radiation curable conduit repair apparatus comprising a.

Preferably, the bracket is provided with a fixing cap having a plurality of guide rollers in contact with the inner surface of the conduit, and a fixing ring inserted into the stepped end where the end of the expansion member is first assembled to the inner surface of the fixing cap It is configured to include a holder and a second holder coupled to the end of the connecting shaft assembled on the inner surface of the first holder.

Preferably, the heating means is made of a metal conductor capable of generating resistance heat when the power is applied is provided with at least one coil heating element wound around the outer surface of the connecting shaft a predetermined number of times.

More preferably, the coil heating element has a coil pitch wound around the length of the connecting shaft larger than the coil pitch wound around the left and right ends of the connecting shaft.

More preferably, the connecting shaft is provided with a coil winding groove in which the coil heating element is wound.

Preferably, the inner surface of the expansion member is provided with at least one endothermic layer by applying an endothermic paint to absorb the radiant heat generated by the heat generating means.

Preferably, the inner surface of the expansion member is provided with a protrusion projecting a certain height to further increase the area absorbing the radiant heat generated by the heat generating means.

Preferably, the heating means is composed of a metal conductor capable of generating resistance heat when the power is applied is provided with at least one 'Ｕ' shaped banding heating element arranged in parallel along the outer surface of the connecting shaft.

Hereinafter, the present invention will be described in more detail.

1 is an overall external view showing a first embodiment of the radiation-curable conduit repair apparatus according to the present invention, Figure 2 is an exploded perspective view showing a first embodiment of the radiation-curable conduit repair apparatus according to the present invention.

The device 100 of the present invention is a reinforcing material that is firmly attached to the inner surface of the conduit by contacting the reinforcing material in the joint area when the breakage of the conduit such as sewage pipe, rain pipe and sewage pipe, and the joint failure between adjacent conduits, and rapidly curing it as radiant heat. By simply repairing the defective portion, which comprises an expansion member 110, the bracket 120, the connecting shaft 130, the heat generating means 140 and the power applying unit 150.

That is, the expansion member 110 is a rubber of a special material so as to increase the volume by flexible expansion in the radial direction by the compressed air injected into the body in the outer surface of the body reinforcement 101 is wound in the initial state of shrinkage It is a hollow cylindrical elastic body made of a raw material.

The expansion member 110 is preferably made of a highly elastic material having durability and heat resistance so as to minimize the thermal deformation due to the radiant heat provided in the inner space while maintaining the hollow cylindrical shape during volume expansion.

Here, the reinforcing material 101 is in close contact with the inner surface of the conduit (P) by the volume expansion of the expansion member and then hardened by a heat source to seal the holes, cracks generated in the conduit, or the connection between the conduits or the short circuit occurs It serves to eliminate discrete points on the pipeline.

The reinforcing material 101 is usually manufactured by impregnating a resin having a property of curing on a fiber cloth such as a non-woven fabric, such as a non-woven fabric or a certain time is satisfied, preferably a thermosetting resin such as an unsaturated ester resin and glass fiber What is manufactured by impregnating and laminating a nonwoven fabric is mainly used.

In addition, the bracket 120 is a sealing member provided in a pair of left and right so as to fix the left and right ends of the expansion member 110, and a pair of brackets 120 in one side of the bracket 120 into the expansion member. At least one air outlet 129 is provided to forcibly inject the compressed air at a pressure higher than atmospheric pressure and to discharge the compressed air to the outside after maintenance.

The bracket 120 has a structure that seals the left and right ends of the expansion member 110 in the same way. When only the configuration of one side is described, the guide roller contacts the inner surface of the bracket 120 when inserted into the conduit P. A fixed cap 121 having a plurality of 125 and having an air outlet 129 and a fixed ring 123 inserted into a stepped portion 122a at which an end of the expansion member 110 is located; It comprises a first holder 122 is assembled to the inner surface of the 121 and the second holder 124 coupled to the end of the connecting shaft 130 is assembled to the inner surface of the first holder 122 do.

In this case, the first and second holders 122 and 124 are formed on the same horizontal axis as the air inlet and outlet 129 so as to form through holes having a predetermined size so as to form an inflow and outflow passage of compressed air. .

Accordingly, one end of the expansion member 110 is inserted by inserting the fixing ring 123 into the step 122a in a state where one end of the expansion member 110 is positioned on the step 122a of the first holder 122. When the first ring 122 is fixed between the fixing ring 123 and the stepped portion 122a, and then the first holder 122 is assembled to the inner surface of the fixing cap 121 by a plurality of fastening members 122b, One end of the expansion member 110 is seized between the fixed cap 121 and the first holder 122 is firmly fixed, and the other end of the expansion member 110 is also the opposite of the fixed gap of the other opposite bracket It is sealed while being fixed between the first holder and the first holder.

In addition, the connecting shaft 130 is coupled to the female screw portion of the second holder 124 by fastening the male screw portion formed at the end of the connecting shaft 130 before assembling the expansion member 110 to the bracket 120. The second holder 124 coupled to the connecting shaft 130 is assembled to the inner surface of the first holder 122 by a plurality of fastening members 124a.

The guide roller 125 is assembled to enable idle rotation at each end of the plurality of roller supports 125a provided on the outer surface of the first holder 122 so as to smoothly move in and out of the conduit P. It is desirable to be.

In addition, the connecting shaft 130 is a shaft member of a predetermined length is located in the inner space of the expansion member 110 is connected to the left and right ends of the left and right pair of brackets 120, respectively.

The connecting shaft 130 is a reinforcing material by maintaining a constant distance between the left and right pair of brackets 120 so that the expansion member 110 is expanded in the radial direction only in the radial direction and does not expand in the longitudinal direction when the compressed air is injected The contact between the outer surface of 101 and the inner surface of the conduit P is made smoother.

Here, the connecting shaft 130 is selectively made of either a rod member having a predetermined length having a male screw portion at the tip or a hollow pipe having a predetermined length having a female screw portion at the tip, depending on the shape of being coupled to the second holder 124. It may be provided.

In addition, the heating means 140 for providing a heat source capable of curing the reinforcing material 101 is disposed in the inner space of the expansion member 110, the connection shaft 130 is located when the power supply is applied to the expansion member ( By radiating heat to the inner surface of the 110 to transfer the heat source to the reinforcement 101 through the expansion member 110, the reinforcement 101 is wound it can shorten the time to harden it.

The heating means 140 is composed of a conductive metal conductor to generate resistance heat when the power is applied is provided with at least one coil heating element 141 wound around the outer surface of the connecting shaft 130 a predetermined number of times, Both ends of the coil heating element 141 are electrically connected to the terminal connecting portion 155 provided in the bracket 120, respectively.

Here, the coil heating element 141 wound on the outer surface of the connecting shaft 130 has a larger coil pitch G1 wound around the length of the connecting shaft than the coil pitch G2 wound around the left and right ends of the connecting shaft. It is desirable to wind up to form.

In this case, since the heat generation temperature generated at the left and right ends of the coil heating element 141 is lower than the heat generation temperature generated at the center of the length, the temperature of the radiant heat transmitted to the reinforcing member is also formed higher than the center of the length. Due to a phenomenon in which the contact pressure between the expansion member and the reinforcement member is lower in the left and right end regions than the central region at the time of volume expansion of the member 110, hardening of the reinforcement member may be prevented from occurring unevenly.

In addition, the entire inner surface of the heat generating means 140 and the corresponding expansion member 110 by applying a heat absorbing paint to a predetermined thickness to increase the efficiency of absorbing the radiant heat generated by the heat generating means 140 at least one Heat absorbing layer 115 may be provided.

On the other hand, by the heat source provided by the heat generating means 140 detects the temperature of the heat for heating the expansion member and the reinforcement, so that it can be confirmed by an external control panel, based on this based on the preset temperature It is preferable to be provided to adjust the amount of power supplied to the heat generating means to control the temperature for heating the reinforcing material.

In addition, a pressure gauge is provided in a passage for injecting compressed air into the expansion member 110 to measure the air pressure of the expansion member 110 in which the volume is expanded, and the measured value can be confirmed by an external control panel.

3 is an exploded perspective view showing a second embodiment of the radiation-curable conduit repair apparatus according to the present invention, the heat generating means 140 on the inner surface of the expansion member 110 constituting the conduit repair apparatus 100a of the present invention. In order to further increase the area absorbing the radiant heat generated in the) may be provided with a protrusion (115a) protruding a predetermined height toward the heat generating means (140).

Here, the heat absorbing paint may also be applied to the inner surface of the expansion member 110 having the protrusion 115a to include at least one heat absorbing layer 115.

The heat absorbing paint provided in the heat absorbing layer 115 is a special functional paint manufactured to absorb the heat of heat by synthesizing and blending a nano-based poly-based material and a special material capable of absorbing heat.

In addition, the coil winding groove 133 to prevent the contact between the adjacent coil heating element while performing the work of winding the coil heating element 141 more smoothly to the connecting shaft 130 is provided with the heating means 140. It may be provided.

Figure 4 is an exploded perspective view showing a third embodiment of the radiation-curable conduit repair apparatus according to the present invention, the heat generating means 140 constituting the conduit repair apparatus 100b of the present invention will generate resistance heat when power is applied. It is made of a conductive metal conductor is provided with at least one 'Ｕ' shaped banding heating element 145 disposed in parallel along the outer surface of the connecting shaft 130, both ends of the banding heating element 145 is the bracket ( Electrically connected to the terminal connecting portion 155 provided in the 120, respectively.

On the other hand, the power supply unit 150 for applying power to the coil heating element and the bending heating element constituting the heating means 140, respectively, the terminal connecting portion electrically connected to the coil heating element 141 or the bending heating element 145. 155 is provided on the outer surface of the bracket 120, the terminal connecting portion 155 is connected to an external power source via a power cable 151.

The repairing of the defective part inside the conduit using the apparatus of the present invention having the above-described configuration is performed after cleaning the repaired part by cleaning the inside of the conduit to be repaired.

After securing a working space around the manhole into which the conduit repair device 100, 100a, 100b of the present invention is inserted, remove the foreign matter accumulated in the conduit P to be repaired or the foreign matter attached to the inner wall of the pipe. In order to do this, the header spraying the high pressure water is introduced into the conduit to perform the pipe cleaning.

Subsequently, before starting the conduit repair work, a small CCTV camera is inserted into the conduit to check the internal condition of the conduit, and the internal condition of the conduit including the point to be repaired is checked by an external monitor.

Then, the impregnated with a thermosetting resin, such as glass fiber and laminated to manufacture a reinforcement 101 in a secured working space, and the manufactured reinforcement 101 is a conduit repair device 100 (100a) (100b) of the present invention It is attached to the outer surface of the constituting the expansion member 110, wherein the expansion member 110 maintains the initial state in which the volume is contracted.

Subsequently, as shown in Fig. 5 (a), the reinforcement 101 is inserted into the conduit P by the devices 100, 100a and 100b wound around the expansion member 110, and checked with a camera. The reinforcing material 101 is placed in a fixed position.

In this state, when the compressed air pressurized to a pressure higher than atmospheric pressure through the air outlet inlet 129 provided in the bracket 120 into the expansion member 110, the expansion member 110 in the longitudinal direction While the expansion is limited by the connecting shaft 103 connecting between the pair of brackets 120, the expansion in the radial direction is free, so the outer diameter of the expansion member 110 is expanded in proportion to the injection amount of the compressed air Let's do it.

Then, when the outer diameter of the expansion member 110 to be expanded in volume is larger than the inner diameter of the conduit (P), as shown in Figure 5 (b) the outer surface of the reinforcement 101 is the inner surface of the conduit (P) When the contact between the reinforcement 101 and the conduit (P) is more than a predetermined pressure, the supply of compressed air is stopped, and the contact between the reinforcement (101) and the conduit (P) To be maintained during maintenance.

On the other hand, in order to shorten the curing time of the reinforcing material 101 is pressed in close contact with the inner surface of the conduit (P), when power is applied to the heat generating means 140 disposed in the inner space of the expansion member 110, The coil heating element 141 wound on the connecting shaft 130 or the bending heating element 145 disposed in parallel to the connecting shaft 130 is heated to a predetermined temperature or more by resistance heat, and the heating elements 141 and 145 The heat source provided is transmitted to the inner surface of the expansion member 110 in the form of radiant heat, and the reinforcement 101 is cured and cured while being heated by the heat source transferred to the expansion member 110, which shortens the time of natural curing. You can do it.

And, even when the inner diameter of the conduit P is a small conduit of 600 mm or less or a large conduit of 600 to 1200 mm or more, the operation of curing the reinforcing member 101 by the heat source provided by the heat generating means is performed as in the related art. It can be performed stably without fear of dropping out.

In addition, the inner surface of the heat generating means 140 and the corresponding expansion member 110 to increase the heat absorption rate of the heat absorbing layer 115 to which the heat absorbing paint is applied to a predetermined thickness or the protrusion to widen the area to absorb heat Since the 115a is provided, the heating temperature of the reinforcing material 101 wound around the outer surface of the expansion member 110 may be increased rapidly to shorten the curing time.

When the hardening of the reinforcing material 101 is completed, the compressed air injected into the expansion member 110 is discharged to the outside through the air outlet opening 129 provided in the bracket 120.

In this case, since the expansion member 110 is contracted to an initial state and the outer diameter is reduced, the device including the expansion member 110 having the reduced outer diameter can be easily withdrawn from the conduit P, and hardening is performed. Completed reinforcement 101 is to be able to complete the maintenance work by maintaining a firmly attached to the inner surface of the conduit as shown in Figure 5 (c).

 While the subject innovation has been shown and described with respect to specific embodiments, it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit or scope of the subject innovation as provided by the following claims. I would like to clarify that knowledge is easy to know.

According to the present invention as described above, by having a heat generating means for providing the radiant heat to the expanded member side in the inner space of the expansion member to which the reinforcing material is wound, the reinforcement attached to the inner surface of the conduit can be cured uniformly as a whole In addition, it can prevent the repair of conduit by increasing the adhesive strength with the conduit.

In addition, since the heat absorbing rate can be increased by providing a heat absorbing layer on the inner surface of the expansion member that transfers heat to the reinforcing material, the temperature for heating the reinforcing material can be increased to shorten the curing time and increase the thermal efficiency.

In addition, since the heating means for providing a heat source to the reinforcing material is provided in a simple structure, irrespective of the expansion operation of the expansion member in the inner space of the expansion member, it is easy to replace it with a new one when the heating means is damaged or damaged. The effect of low equipment maintenance cost is obtained.

1 is an overall external view showing a first embodiment of the radiation-curable conduit repair apparatus according to the present invention.

Figure 2 is an exploded perspective view showing a first embodiment of the radiation-curable conduit repair apparatus according to the present invention.

3 is an exploded perspective view showing a second embodiment of the radiation-curable conduit repair apparatus according to the present invention.

Figure 4 is an exploded perspective view showing a third embodiment of the radiation curable conduit repair apparatus according to the present invention.

Figure 5 (a) (b) (c) is a flow chart showing the repair operation using the radiation cured conduit repair apparatus according to the present invention.

Explanation of symbols on main parts of drawing

101: reinforcing material 110: expansion member

115: heat absorbing layer 115a: protrusion

120: bracket 121 fixed gap

122: first holder 124: second holder

130: connecting shaft 140: heating means

141: coil heating element 145: banding heating element

Claims (8)

An apparatus for repairing defects in a conduit by curing a reinforcement inserted into a conduit and contacting the inner surface of the conduit with a heat source, An expansion member which expands the outer surface of the body on which the reinforcement is wound to radial direction by compressed air injected into the body and contacts the outer surface of the reinforcement to the inner surface of the conduit; A pair of brackets fixed to the left and right ends of the expansion member and having at least one air outlet port for injecting and discharging compressed air into the expansion member; Connecting shafts connected to both left and right ends of the left and right pairs of brackets to maintain a distance between the left and right pairs of brackets; A heat generating means positioned in the inner space of the expansion member and providing a heat source for hardening the reinforcement by radiating heat to the inner surface of the expansion member when power is applied; And A power supply unit for applying power to heat the heat generating means; Radiation-curable conduit repair apparatus comprising a. The method of claim 1, The bracket is provided with a fixing cap having a plurality of guide rollers in contact with the inner surface of the conduit, and a first ring is assembled to the inner surface of the fixing cap having a fixing ring inserted into the stepped end is located the end of the expansion member and the And a second holder coupled to an end of the connecting shaft and assembled to the inner surface of the first holder. The method of claim 1, The heat generating means is made of a metal conductor capable of generating resistance heat when the power is applied to the radiation cured conduit repair apparatus characterized in that it is provided with at least one coil heating element wound around the outer surface of the connecting shaft a predetermined number of times. The method of claim 3, The coil heating element is a radiation cured conduit repair device characterized in that the coil pitch wound around the center of the connecting shaft has a larger pitch than the coil pitch wound around the left and right ends of the connecting shaft. The method of claim 3, Radiation-curable conduit repair device, characterized in that the connecting shaft has a coil winding groove for winding the coil heating element. The method of claim 1, Radiation-curable conduit repair apparatus characterized in that the inner surface of the expansion member is provided with at least one endothermic layer by applying an endothermic paint to absorb the radiant heat generated by the heat generating means. The method of claim 1, Radiation-curable conduit repair apparatus on the inner surface of the expansion member is provided with a projection protruding a certain height to further increase the area absorbing the radiation heat generated by the heat generating means. The method of claim 1, The heat generating means is made of a metal conductor capable of generating resistance heat when the power is applied to the radiation cured conduit repair apparatus, characterized in that provided with at least one 'Ｕ' shaped banding heating element arranged in parallel along the outer surface of the connecting shaft.