JP3510753B2 - Partial rehabilitation repair jig and rehabilitation repair method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of rehabilitating a supply pipe branching from a main branch pipe via a service chi and having cheese in the middle of the repair. Jig and rehabilitation repair method.

[0002]

2. Description of the Related Art Normally, the gas supplied to each household is supplied from a main pipe buried under a road through a supply pipe branched through a service station. Specifically, the supply pipe is diverged from the service Qi and crosses under the road,
The cheese, commonly known as "Marusa," is set up near the boundary between the road and the private land to a depth of about 30 cm, and the lamp outer tube is buried up to near the gas meter and connected to the meter stand tube.

In recent years, with the deterioration of the supply pipe, a resin lining method has been adopted to rehabilitate the supply pipe. This resin lining method is a technique in which a plug resin is introduced into the supply pipe through a meter opening and the plug resin is moved by a fluid or gas to form a resin film on the inner surface of the supply pipe.

[0004]

[Problems to be Solved by the Invention] By the way, when the private house is demolished, the service pipe from the service Qi to the cheese is left as it is, and when a new private house is newly built, the light outside pipe from the cheese to the meter stand pipe There is often a new construction.
Therefore, only the supply pipe from the service team to the cheese is deteriorated and only that part needs to be rehabilitated.

In such a case, the lamp outer tube is once separated from the cheese, the lamp outer tube opening is closed in the cheese, and only the supply tube is refurbished by a resin lining method or the like.

[0006] However, in order to cut the lamp outer tube from the cheese by cutting it, and then reconnecting it, not only a great amount of work effort is required but also the work cost increases. Further, unless the opening of the lamp outer tube is properly closed, resin or the like leaks from that portion, and a resin film cannot be properly formed on the entire inner surface of the supply tube.

The present invention has been made in order to solve the above problems, and an object of the present invention is to provide a jig and a method for simply and properly performing partial rehabilitation of a supply pipe. To do.

[0008]

In order to achieve the above object, the present invention is directed to a service pipe branched from the main branch via a service che, and in which a cheese is inserted to communicate with the meter. A jig for rehabilitating the section between the cheese and the cheese, wherein the jig is a cylindrical member that is mounted by being inserted into the cheese through a plug mounting hole of the cheese, and the jig is inserted when the jig is inserted. And a supply pipe in a section between the service tee and the cheese are in a communication state, and the supply pipe opening in a section between the cheese and the meter is cut off in the cheese. It is what

According to the second and third aspects of the present invention, the jig outer peripheral surface is provided with a screw portion to be screwed into the cheese plug mounting hole, and the lower end portion of the jig is O-shaped. It is characterized in that a ring is provided.

According to a fourth aspect of the present invention, in the supply pipe branched from the main branch via the service che and communicating with the meter via cheese on the way, the section between the service che and the cheese is rehabilitated. In the construction method, a cylindrical tubular jig is inserted into the cheese through the cheese mounting hole and mounted, and the liquid resin necessary for lining the inner surface of the supply pipe in the section between the service che and the cheese is In the step, it is introduced into the pipe as a plug from the opening of the jig, and the entire amount of the resin plug is transferred to the vicinity of the service tee by the liquid flow that is press-fitted from the rear. In the second step, it is connected to the opening of the jig. The liquid flow in the pipe is sucked and discharged by the suction means, and the lining film is formed by applying the resin to the inner surface of the pipe by the flow of the resin plug that is pulled back to the opening of the jig by the suction force. And butterflies.

[0011]

According to the present invention as set forth in claims 1, 2 and 3, when the supply pipe is partially repaired, first, the portion where the cheese is buried is excavated and then the cheese is cut. Remove the plug. Then, the partial repair jig of the present invention is inserted by inserting the cheese plug hole. At this time, when the outer peripheral surface of the jig is provided with a screw portion, the jig is screwed and fastened to the screw portion of the plug hole. Therefore, by the jig inserted from the plug hole, the supply pipe opening in the section between the cheese and the meter in the cheese is blocked, and the supply pipe from the service Qi to the cheese in the cheese and the meter stand pipe from the cheese. Up to the lamp outer tube will be separated. At this time, if an O-ring is provided at the lower end of the jig, the O-ring comes into contact with the inner wall surface of the cheese to ensure a sealing action.

According to the fourth aspect of the present invention, only the supply pipe separated in the cheese by the partial rehabilitation repair jig can be rehabilitated by the resin lining.
Further, by removing the jig after the rehabilitation repair, the blocked supply pipe opening is opened and the supply pipe can function again.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1A and 1B are explanatory views of a partial rehabilitation repair jig of the present invention. FIG. 1A is an overall perspective view, and FIG. 1B is a state diagram when mounted on a marsa cheese.

As shown in the figure, the partial rehabilitation repair jig 1 is
It is formed of a metal material into a cylindrical tube shape, and its outer diameter is approximately the same as the inner diameter of the Marusa cheese 2. Further, screw portions 11 and 12 are provided on the upper and middle portions thereof, and the screw portion 12 can be screwed into the plug hole of the Marusa cheese 2. Further, the screw portion 11 can be screwed and connected to a lining pipe described later. Further, the jig 1 is provided with a hexagonal bolt-shaped holding portion 13 so that the repair jig 1 can be easily screwed and connected to the marsa cheese 2. Furthermore, an O-ring 14 is provided at the lower end of the repair jig 1 in order to improve the sealing property with the inner wall surface of the Marusa cheese 2.

The partial rehabilitation repair jig 1 configured as described above
FIG. 1 (b) shows a state in which is inserted and connected to the Marusa cheese 2. Here, the Marusa cheese 2 has a plug hole 21 in its head for the purpose of simply shutting off gas, and a screw portion is formed on the inner surface of the plug hole 21, and a plug (not shown) is always provided. Is screwed into the plug hole 21 and closed. Further, in the drawing, a supply pipe branched from the service tee is connected to the lower supply pipe opening 22 and a light outer pipe communicating with the meter stand pipe is connected to the right light outer pipe opening 23. Has been done.

When the repair jig 1 is inserted and connected to the above-mentioned Marsa cheese 2, the lamp outer tube opening 23 is formed by the jig 1.
Is cut off. Further, since the O-ring 14 is in contact with the inner wall surface of the Marsa cheese 2, the sealing property is improved, and even if a liquid such as resin or water flows into the Marsa cheese 2 from the jig 1, this liquid will not be lighted by the lamp outer tube. It does not enter the opening 23. As a result, with the partial rehabilitation repair jig 1 of the present invention, it is possible to separate the supply pipe and the lamp outer pipe in the Marsa cheese 2.

Next, a partial rehabilitation repair method using the partial rehabilitation repair jig 1 of the present invention will be described with reference to FIGS. As shown in FIG. 2 and FIG. 3, the pipe to be constructed is such that a supply pipe 4 branched from a main branch pipe 3 buried under the road via a service station 31 communicates with the marsa cheese 2, and The lamp outer tube 5 communicates with the meter stand tube 6 from 2. The partial rehabilitation repair method according to the present invention separates the lamp outer tube 5 from the supply tube 4 in the Marsa cheese 2 and repairs only the supply tube 4 again.

Prior to construction, first, the vicinity of the Marsa cheese 2 is cut open and the Marsa cheese 2 plug is removed. next,
The partial rehabilitation repair jig 1 is screwed and connected to the plug hole of the Marusa cheese 2, and the lamp outer bulb opening 23 is blocked in the cheese 2. Next, the lining pipe 7 is screwed and connected to the upper portion of the repair jig 1, and a sonic length measuring device is attached to the opening of the lining pipe 7 to determine the lining length.

Next, as shown in FIG. 2, as a first step, the plug resin A is conveyed. As the means, first,
The lining pig 8 is introduced into the supply pipe 4, and a predetermined amount of plug resin A determined by the lining film pressure and the lining length.
Is injected into the supply pipe 4 by hydraulic pressure using the resin injection device 81. A liquid tank 82 is used as the liquid feeding means.
The liquid feed pump 83 and the liquid flow control device 84 fed from the pump 83 are connected in series and connected to the opening of the lining pipe 7. After that, the resin conveying pig 86, the liquid absorbing agent 87, and the liquid blocking pig 88 are introduced into the pipe by the liquid pressure of the liquid B using the pig cassette 85, and the lining pig 8 is accurately conveyed to the lining target position before the service tee 31. .

Next, as a second step, as shown in FIG.
Install suction lining. As a means for this, the pig receiver 9, the liquid recovery tank 91, and the suction pump 92 are connected in series. The supply pipe 4 is operated by the operation of the suction pump 92.
The liquid B in the inside is sucked and discharged, and by the suction force, the resin conveying pig 8
6, the liquid absorbing agent 87, the liquid blocking pig 88, the plug resin A, and the lining pig 8 are moved to the opening side of the lining pipe 7. As a result, the movement of the lining pig 8 causes the supply pipe 4 to move.
A uniform lining film is formed on the inner wall surface.

As described above, only the supply pipe 4 separated in the Marsa cheese 2 by the partial rehabilitation repair jig 1 can be rehabilitated by resin lining. Further, by removing the jig 1 after the rehabilitation repair, the shut-off lamp outer tube opening 23 is opened, and it can function again as a supply tube.

[0022]

As described above, the first and second aspects of the present invention are described.
According to 2 and 3, when the partial repair of the supply pipe is performed, first, the place where the cheese is buried is excavated, and then the cheese plug is removed. Then, the partial repair jig of the present invention is inserted by inserting the cheese plug hole. At this time, when the outer peripheral surface of the jig is provided with a screw portion, the jig is screwed and fastened to the screw portion of the plug hole. Therefore, the jig inserted from the plug hole cuts off the supply pipe opening in the section between the cheese and the meter in the cheese, and the supply pipe from the service che to the cheese in the cheese and the meter stand tube from the cheese. Up to the lamp outer tube will be separated. At this time, if an O-ring is provided at the lower end of the jig, the O-ring comes into contact with the inner wall surface of the cheese to ensure a sealing action.

Further, according to the present invention of claim 4, only the supply pipe separated in the cheese by the partial rehabilitation repair jig can be rehabilitated by the resin lining.
Further, by removing the jig after the rehabilitation repair, the blocked supply pipe opening is opened and the supply pipe can function again.

[Brief description of drawings]

FIG. 1A is an overall perspective view of a partial rehabilitation repair jig. (B) It is the state figure which attached the partial rehabilitation repair jig to cheese.

FIG. 2 is an explanatory diagram of a first step of the partial rehabilitation repair method.

FIG. 3 is an explanatory diagram of a second step of the partial rehabilitation repair method.

[Explanation of symbols]

1 Partial rehabilitation repair jig 11 screw part 12 screw part 13 Holder 14 O-ring 2 Marsa cheese 21 plug hole 22 Supply pipe opening 23 Opening of outer lamp 3 branch pipes 31 Service Qi 4 supply pipes 5 light bulbs 6 meter standpipe 7 Lining pipe 8 lining pig 81 Resin injection device 82 Liquid tank 83 Liquid delivery pump 84 controller 85 pig cassette 86 Resin transport pig 87 Liquid absorbent 88 Liquid blocking pig 9 pig receiving 91 Liquid recovery tank 92 Suction pump

─────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-8-150364 (JP, A) JP-A-4-18966 (JP, A) JP-A-8-84955 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) B05C 7/04 B05D 7/22 F16L 55/16

Claims (4)

(57) [Claims] 1. A jig for rehabilitating a section between the service che and the cheese in a supply pipe branched from the main branch via a service che and communicating with a meter with cheese on the way, The jig is a cylindrical member that is inserted into the cheese through the plug mounting hole of the cheese and mounted. When the jig is inserted, the jig and the supply pipe in the section between the service chee and the cheese communicate with each other. The partial rehabilitation repair jig is configured so as to be in a state, and is configured to block the supply pipe opening in the section between the cheese and the meter in the cheese. 2. The partial rehabilitation repair jig according to claim 1, wherein the jig outer peripheral surface is provided with a screw portion to be screwed into the cheese plug mounting hole. 3. The partial rehabilitation repair jig according to claim 1, wherein an O-ring is provided at a lower end portion of the jig. 4. A construction method for rehabilitating the section between the service che and the cheese in a supply pipe branched from the main branch via a service che and communicating with the meter with cheese on the way, which is a cylinder. A tubular jig is inserted into the cheese through the cheese mounting hole and mounted, and the liquid resin necessary for lining the inner surface of the supply pipe in the section between the service che and the cheese is used in the first step. It is introduced into the tube as a plug through the opening, and the entire amount of the resin plug is transferred to the vicinity of the service che by the liquid flow that is press-fitted from the rear. In the second step, the inside of the tube is sucked by the suction means connected to the opening of the jig. Partial rehabilitation, characterized in that a liquid flow is sucked and discharged, and the suction force pulls back the liquid plug to the opening of the jig to apply resin to the inner surface of the pipe to form a lining film. Method.