JPH07151294A - Repairing method for defective parts of flexible housing piping - Google Patents

Abstract

(57) [Summary] [Purpose] When it is discovered that there is a defective part in the flexible piping that is routed inside the wall or under the floor after the interior finish is completed at the time of new construction or renovation of the house, Repair defective parts without destroying interior materials. [Structure] An opening 8 is provided in an externally exposed portion of a flexible pipe 4 which is routed inside a house 1. Through the opening 8, in the first step, a defective portion is confirmed using a detection instrument such as a fiberscope or a sound wave length measuring machine. After the confirmation, in the second step, a required amount of the liquid resin G is introduced into the front pipe of the defective portion x in a plug shape by an appropriate means through the opening 8. In the third step after the introduction, an air flow of a required pressure is added from the opening 8 by the blower 9 to blow out the resin plug G due to the pressure difference generated before and after the resin plug. During this blowing process, a part of the resin G flowing on the inner surface of the pipe wall enters the defective portion x and is blocked, and a resin film is applied to the inner surface of the pipe around the defective portion x to open the inside of the pipe. Repair and install.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to a flexible pipe of gas or the like which is routed indoors such as a detached house or a reinforced housing complex so as not to be exposed to the wall or under the floor. It is related to the repairing method of the place where a defective part is created by piercing a flexible pipe with a nail or the like.

[0002]

2. Description of the Related Art For indoor piping such as gas appliances and water heaters in a house, a flexible piping method is adopted in which a flexible pipe is routed so as not to be exposed to the wall of the building or the underfloor together with electric wiring when a new house is built. The surface of the flexible pipe that has been piped is finished with an interior material.

[0003]

When a new house is built, nails or the like may be driven in from above the interior material after the interior finish is completed. At this time, the tips of the nails that were driven in accidentally pierced the flexible pipes that were laid inside the wall and under the floor, and a leak defect was found in the flexible pipes where the nails were driven in during the inspection after new construction. What is happening may be discovered later.

In this case, when repairing the defective portion,
In the method of peeling off the interior material where the defective part occurs and taking out the flexible pipe that is routed inside the wall or under the floor and repairing it, it is necessary to destroy the interior material that has been bent and finish the interior again. That is a waste.

SUMMARY OF THE INVENTION The present invention is a method for repairing flexible piping of a house proposed to eliminate the above waste, and an object thereof is to partially repair the flexible piping at a defective portion without replacing it. To do.

[0006]

In order to achieve the above object, in the repairing method according to the present invention, an opening is provided at an externally exposed portion of a flexible piping system piped in a house, and a fiberscope or an opening is provided from the opening. A step of confirming the defective portion using a detection instrument such as an acoustic wave length measuring machine, and a step of introducing a required amount of liquid resin into the front pipe of the defective portion in a plug shape after confirmation by an appropriate means from the opening after the confirmation, and after the introduction. It consists of the process of blowing the resin plug by the pressure difference generated before and after the resin plug by applying an air flow of the required pressure from the opening part, and part of the resin flowing on the inner surface of the pipe wall enters the defective part during the blowing process. Then, a resin film is applied to the inner surface of the pipe around the defective portion and the repair is performed so that the inside of the pipe is opened.

[0007]

[Operation] According to this construction method, the flexible pipe in the house can be partially repaired at the place where the defective part is left in the routed state, so after the interior finish is completed at the time of new or remodeling of the house Even if it is discovered that there is a defective part in the flexible pipe, it is not necessary to peel off and destroy the interior material and take out the flexible pipe and replace a part of it, peeling off the interior material, replacing the flexible pipe, interior Wastes associated with refinishing materials can be eliminated.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an example of a flexible pipe system applied to a detached house. In the house 1, a plurality of flexible pipes 4 serving as a gas pipeline branched from an outdoor gas meter 2 through a header 3 are provided. However, the flexible pipe 4 (e) is connected to the outdoor water heater 5 by the well-known flexible piping method, and the other flexible pipes 4 (a to d) are indoors. Gas outlets A, B, C, D, installed in
It is piped so that it leads to E. These flexible tubes 4
(A to d) are drawn under the floor or inside the wall so as not to be exposed on the indoor surface.

When a nail 6 or the like is driven from the surface of the interior material 1a after the interior finish is completed at the time of new construction or remodeling of the house, the nail 6 or the like is mistakenly driven. When piercing the flexible pipe 4 that is routed inside the wall or under the floor, and during inspection after new construction or reconstruction, it is found that the leakage defect portion x has occurred at the position where the nail 6 pierces. There is.

As a method of repairing the defective portion x, in the present invention, a portion exposed to the outside of the flexible piping system, for example, a portion of the flexible pipe 4 (a to d) connected to this at the position of the header 3 is separated. Then, the separated connection port is used as an opening 8 for repair.

Then, in the first step, through the opening 8,
The flexible pipe 4 (a) in which a defective part x is generated by inserting a detection instrument such as a fiberscope into the pipe system of the flexible pipe 4 (a to d) that is routed inside the wall or under the floor. Confirm the route and the generation place of (d) to the distance from the opening 8 to the generation place. As a confirmation method,
Defect due to a method of inserting a detection instrument such as a fiberscope into the tube to look inside the tube, or setting a sound wave length measuring machine at the opening and the relationship between the transmitted sound wave and the reflected sound wave that is reflected back from the inside of the tube. A method of confirming the generation position and the distance of the part x is adopted.

Next, in the second step, an opening 8 is formed as shown in FIG. 3 with respect to the confirmed path of the flexible pipe 4 (a to d).
As a result, a required amount of the liquid resin G is introduced in a plug shape at a position before the location where the defective portion x is generated. As the resin G introduced here, for example, a silicon-based resin having a stretch of 100,000 CPS or more is desirable. As a means for introducing the resin G, a method in which the hose 7 is drawn into the pipe through the opening 8 and introduced by the hose 7, or although not shown, a required amount of the resin G is provided by a pig before the position where the defective portion x is generated. The method of introducing by pushing up is adopted.

After the introduction of the resin G, in the third step, the above-mentioned resin supply hose 7 is pulled out, and the opening 8 is formed as shown in FIG.
The blower 9 connected to blows air of a required pressure into the flexible tube. This air pressure causes a pressure difference before and after the plug of the resin G, and the resin plug G is provided with fluidity to form a resin film having a required film thickness on the inner surface of the pipe from the position in front of the defective portion x as shown in FIG. At the same time, a blow-through occurs toward the subsequent stage of the defective portion x. At this time, a part of the resin G adhering to the inner wall of the pipe enters the defective portion x along the nail 6 piercing the wall of the pipe to close the defective portion x, and the periphery of the defective portion x. Repaired to form a coating g of resin G in the tube.

In the repairing method as described above, since the flexible pipes 4 (a to d) having the defective portion x can be repaired from the external opening while being laid in the house, the interior finishing is performed at the time of repairing. It is not necessary to peel off or destroy the interior material on the indoor surface that has been completed, and there is no waste of removing and refinishing the interior material.

[0015]

As described above, according to the present invention, when the house is newly built or remodeled, after the interior finish is completed, there is a leakage defect in the flexible pipe which is routed inside the wall of the house or under the floor. Even if it is found that a part has been generated, the interior material can be repaired without peeling and destroying the flexible tube and replacing a part of the flexible pipe. This eliminates the need to take out and replace the flexible pipe, and can eliminate unnecessary costs associated with refinishing the interior material.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an example of flexible piping applied to a detached house.

FIG. 2 is a vertical sectional front view showing an example of a defective portion generated in a flexible pipe.

FIG. 3 is a vertical sectional side view showing a second step of the repairing method according to the present invention.

FIG. 4 is a vertical cross-sectional side view showing a third step of the above repairing method.

[Explanation of symbols]

 1 House 2 Gas Meter 3 Header 4 Flexible Tube 5 Water Heater 6 Nail 7 Resin Supply Hose 8 Opening 9 Blower

Claims (1)

[Claims] 1. A flexible pipe for gas or the like that is routed in a house so that it is not exposed to the wall or under the floor, a nail or the like driven from the surface of an interior member, etc. pierces the flexible pipe to cause a defective portion. In the repairing method for the damaged part, an opening is provided on the externally exposed part of the flexible piping system, and a step of checking the defective part using a detection instrument such as a fiberscope or a sound wave length measuring machine through the opening, and opening after checking From the part by a suitable means to introduce a required amount of liquid resin into the front pipe of the defective portion in the form of a plug, and after the introduction, an air flow of a required pressure is added from the opening to create a resin due to the pressure difference generated before and after the resin plug. It consists of the process of blowing out the plug, in which part of the resin flowing on the inner surface of the pipe wall intrudes into the defective portion and blocks it, and the resin film is applied to the inner surface of the pipe around the defective portion to open the inside of the pipe. Will be Defect repair method of the housing flexible pipe, characterized in that the repair and construction to.