JP2003214589A - Repairing method of pipe damage hole and bag installing guide - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To quickly check leaking-out of a pipe inside fluid from a damage hole. <P>SOLUTION: This repairing method of the pipe damaged hole checks the leaking-out of the pipe inside fluid from the damaged hole B opening in a pipe A. An inflatable bag 2 is folded up in a long size shape in a state of positioning a connecting part with a pressurized fluid supply tube 1 on one end side, a lengthwise directional intermediate part of the bag is allowed to enter the damage hole, and the bag is inflated by a pressurized fluid supplied via the tube to check the leaking-out of the pipe inside fluid from the damaged hole. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of repairing a pipe breakage hole and a bag mounting guide for preventing leakage of fluid in a pipe from a breakage hole opened in a pipe wall.

[0002]

2. Description of the Related Art For example, in road construction or pipe burial work, excavator claws, earth augers, boring bars, or other excavation members accidentally come into contact with an existing gas pipe or other buried pipe, and the pipe wall There is a possibility that a hole (broken hole) may be opened in the hole, and in the past, the buried pipe part around the broken hole was exposed to prevent the fluid in the pipe from leaking out by temporarily blocking the broken hole. To open it, and close it with a stuff such as waste cloth or clay that has been manually packed according to the shape and size of the hole, and if necessary, wrap a sheet such as a repair tape from the top. Take action.

[0003]

For this reason, there is a drawback that it is not possible to quickly prevent the fluid in the pipe from leaking from the damaged hole by taking time and labor for the excavation work and the packing work of the stuffed material into the damaged hole.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to quickly prevent the fluid in the pipe from leaking out from the breakage hole.

[0005]

According to a first aspect of the present invention, there is provided a method for repairing a pipe breakage hole for preventing fluid in a pipe from leaking out from a breakage hole formed in a pipe wall. The bag was folded into a long shape with the connecting portion to the pressurized fluid supply tube located at one end side, and the longitudinal middle portion of the bag was inserted into the damage hole, and the bag was supplied through the tube. The point is to inflate the bag with pressurized fluid to prevent the fluid in the tube from leaking out from the breakage hole.

[Operation] A bag that is inflatable and contractible is attached to the breakage hole in a contracted state, and the pressurized fluid supplied through the pressurized fluid supply tube does not create a gap between the bag and the periphery of the breakage hole. In addition, since it expands according to the shape and size of the damage hole to close the damage hole, compared to the conventional method of filling the filling hole by hand according to the shape and size of the damage hole to close the damage hole. Therefore, the work can be simplified.

When the bag is attached to the breakage hole in a contracted state, the bag is folded into a long shape with the connecting portion to the tube located on one end side, and the middle portion in the longitudinal direction of the bag is changed into the breakage hole. Since the bag is inserted, the bag portion on the outer side and the bag portion on the inner side of the tube can be inflated to a size larger than the diameter of the breakage hole, and the bag can be mounted so as not to fall out of the breakage hole.

[Effect] Compared with the conventional method in which the filling hole is filled by hand according to the shape and size of the damage hole to close the damage hole, the work can be simplified and the damage hole can be removed. It is possible to quickly prevent the fluid in the pipe from leaking out.

According to a second aspect of the invention, the connecting portion guides the bag folded in the elongated shape by using an elongated bag mounting guide whose front end can be inserted into the damage hole. Along the guide longitudinal direction so as to face the base end side, the distal end side of the bag mounting guide is held so as to be able to slip out in the guide radial direction, and the distal end side of the bag mounting guide is inserted into the damage hole, A longitudinal middle portion of a bag folded in an elongated shape is inserted into the damage hole, and the bag is inflated by a pressurized fluid supplied through the tube, so that the bag is guided from the tip side of the bag mounting guide to a guide diameter. In the direction of the broken hole, and locked in the peripheral edge of the damage hole in a retaining state, leaving the bag locked in the peripheral edge of the damage hole, leaving the tip side of the bag mounting guide from the damage hole. Come out, blocking the damaged hole in bag engaged on the periphery of the damaged hole lies in to prevent leakage of the fluid inside the tube from the damaged hole.

[Operation] When a bag folded in a long shape is mounted in the breakage hole, the connection portion with the tube is arranged along the longitudinal direction of the guide so as to face the guide base end side, and the long bag mounting guide is attached. The tip side of the bag mounting guide is inserted into the damage hole by holding the tip side that can be inserted into the damage hole so that it can be pulled out in the radial direction of the guide. Even if a buried pipe is buried, if the position of the broken hole can be confirmed from the excavation hole created when the broken hole was opened in the pipe wall or the trace of movement of the excavated member, the buried pipe around the broken hole can be confirmed. The bag can be mounted so that the longitudinal middle portion thereof enters the breakage hole without particularly digging to expose the portion.

Further, the bag is inflated to be pulled out in the guide radial direction from the front end side of the bag mounting guide, and the bag is locked to the peripheral edge of the breakage hole in a retaining state.
Since the front end side of the bag mounting guide is pulled out from the damaged hole, leaving the bag locked around the broken hole, the bag mounting guide after use can be easily removed from the tube.

When closing the damage hole so that the inflated bag can prevent the fluid in the pipe from leaking out, the bag is inserted into the pipe through the damage hole so that the tip side of the bag mounting guide can be easily pulled out from the damage hole. Although it is not possible to prevent fluid from leaking out, expand the bag so that it can be locked to the peripheral edge of the breakage hole while retaining it, pull out the bag mounting guide from the breakage hole, and then remove the bag locked around the breakage hole. The bag may be further inflated, but the bag may be inflated sufficiently to prevent the fluid in the pipe from leaking out, and then the tip side of the bag mounting guide may be pulled out from the damage hole to close the damage hole.

[Effect] Even in the case of a broken hole opened in a buried pipe buried in the ground, as long as the location of the broken hole can be confirmed, the broken hole is not particularly cut to expose the buried pipe portion around the broken hole. Since it can be closed, it is possible to quickly prevent the fluid in the pipe from leaking out from the breakage hole.

According to a third aspect of the present invention, there is provided a method of repairing a pipe breakage hole for preventing fluid in a pipe from leaking out from a breakage hole opened in a pipe wall. Using a long bag mounting guide that can insert the tip side into the breakage hole, fold the bag into a long shape with the connection portion with the pressurized fluid supply tube located at one end side, Along the guide longitudinal direction so that the connecting portion faces the guide base end side, the bag mounting guide is held at the distal end side so as to be able to slip out in the bag longitudinal direction, and the distal end side of the bag mounting guide is passed through the damage hole. Inserted in the tube, by the pushing operation by the tube, the bag folded in the long shape is pushed out from the tip side of the bag mounting guide, and is made to enter into one tube of the portion sandwiching the broken hole, The operation to cut off the tube by expanding the bag in the supplied pressurized fluid through cube,
The two bags block the insides of the pipes on both sides of the portion sandwiching the breakage hole to prevent the fluid in the pipe from leaking out from the breakage hole.

[Operation] Two bags which are inflatable and defensible can be inserted into the pipes on both sides of the place where the breakage hole is sandwiched in a contracted state,
These bags are inflated with the pressurized fluid supplied through the pressurized fluid supply tube to shut off the inside of the pipes on both sides of the place where the damage hole is sandwiched. Compared to packing the filling into the breakage hole by hand, it is possible to reliably prevent the fluid in the pipe from leaking out from the breakage hole while simplifying the work.

When each bag is inserted into the tube at the position where the breakage hole is sandwiched in the contracted state, the bag is folded into an elongated shape with the connecting portion to the tube located at one end side, and the connecting portion is connected to the guide base end. Sideways along the longitudinal direction of the guide, hold it so that it can be pulled out in the longitudinal direction of the bag at the tip side of the long bag mounting guide, and insert the tip side of the bag mounting guide into the tube through the breakage hole. By pushing out with a push-out operation, the bag folded into a long shape is pushed out from the tip side of the bag mounting guide and is inserted into one of the pipes where the breakage hole is sandwiched. It is possible to reliably prevent the fluid in the pipe from leaking out.

Further, even in the case of a broken hole opened in a buried pipe buried in the ground, the position of the broken hole can be determined from, for example, an excavation hole formed when the broken hole is formed in the pipe wall or a trace of movement of the excavating member. If it can be confirmed, the bag can be made to enter the pipe at the portion sandwiching the breakage hole in a contracted state without performing the open cutting so that the buried pipe portion around the breakage hole is exposed.

[Effect] As compared with the conventional method of manually filling the filling material according to the shape and size of the breakage hole to close the breakage hole, the work can be simplified and a relatively large breakage hole can be obtained. , It is possible to reliably prevent the fluid in the pipe from leaking out from the breakage hole.

Further, even if a broken hole is opened in a buried pipe buried in the ground, if only the location of the broken hole can be confirmed, the buried pipe portion around the broken hole is not exposed so as to expose two buried holes. Since the bag can be made to enter the pipe in the portion where the broken hole is sandwiched in the contracted state, it is possible to quickly prevent the fluid in the pipe from leaking from the broken hole.

According to a fourth aspect of the present invention, the pipe is a buried pipe for gas supply, and the buried pipe portion around the breakage hole where the leak of the gas in the pipe is prevented by the bag is exposed. Open and cut, and airtightly surround the damaged hole with a no-blowing bag, while removing the bag in the no-blowing bag, affixing a sheet material to the pipe wall to close the damaged hole. is there.

[Operation] After the bag is prevented from leaking the gas in the pipe from the breakage hole, the buried pipe portion around the breakage hole is exposed to expose the gas in the pipe even if the bag is removed. In order to prevent the gas from leaking out, the breakage holes are airtightly surrounded by a no-blowing bag so that the bag can be removed and a sheet material is attached to the wall of the tube to prevent the gas from leaking out. Block the damage hole.

[Effect] Remove the bag that needs to be maintained in an inflated state, and use the sheet material attached to the pipe wall to ensure that gas in the pipe does not leak until the necessary restoration work is started. Can be stopped.

According to a fifth aspect of the present invention, there is provided a bag mounting guide used in the method for repairing a pipe breakage hole according to the second aspect, wherein the tube is inserted into a distal end portion of a long tubular body. A holding portion is provided for holding the bag folded in an elongated shape so that the bag can be pulled out in the radial direction of the tubular body.

[Operation] A bag in which a tube for supplying a pressurized fluid is inserted into a long tubular body and folded in a long shape is provided at a tip end portion of the long tubular body and a connecting portion at a guide proximal end side. The guide can be held along the longitudinal direction of the guide so as to be slidable in the radial direction of the tubular body.

[Effect] Even if the broken hole is opened in the buried pipe buried in the ground, when the distal end side of the bag mounting guide is inserted into the pipe through the broken hole, the pressurized fluid supply tube is elongated. It is possible to handle the tube integrally with the bag while protecting the inside of the tubular body, and to simplify the work of inserting the bag mounting guide into the tube.

A feature of the invention according to claim 6 is that a blade portion capable of cutting the pipe wall of the resin-embedded pipe by rotating the long cylindrical body is provided at the tip of the holding portion. .

[Operation] When there is a broken hole in the wall of the resin-made buried pipe that makes it difficult for the tip of the bag mounting guide to pass therethrough, the blade provided at the tip of the holding portion is used to rotate the long tubular body. The cutting action can be applied to the pipe wall around the breakage hole so that the breakage hole can be expanded so that the tip side of the bag mounting guide can be easily passed through.

[Effect] Even if a broken hole is formed in the wall of the resin-made buried pipe buried in the ground, which makes it difficult to pass the tip end side of the bag mounting guide, the buried pipe portion around the broken hole is opened and cut. Instead, the tip side of the bag mounting guide can be inserted into the tube.

According to a seventh aspect of the present invention, there is provided a bag mounting guide used in the method for repairing a pipe breakage hole according to the third aspect, in which a distal end portion of a long tubular body through which the tube can be inserted, A holding part for holding the bag folded in an elongated shape so as to be able to slip out in the longitudinal direction of the bag is provided, and the tip end side of the holding part is curved in the tubular body radial direction.

[Operation] The tube for supplying the pressurized fluid is inserted into the long cylindrical body, and the bag folded in the long shape is connected to the holding portion provided at the tip of the long cylindrical body. Hold the tube so that it can be pulled out in the longitudinal direction of the bag along the longitudinal direction of the guide so that it faces the proximal end side of the guide, and push the tube into the long tubular body to push the bag in the longitudinal direction of the bag from the holding part. . Further, since the distal end side of the holding portion is curved in the tubular body radial direction, the bag can be pushed out of the holding portion in the tubular body radial direction.

[Effect] Even if the broken hole is opened in the buried pipe buried in the ground, when inserting the distal end side of the bag mounting guide into the pipe through the broken hole, the pressurized fluid supply tube is elongated. It is possible to handle the tube integrally with the bag while protecting the inside of the tubular body, and to simplify the work of inserting the bag mounting guide into the tube. Also,
If the bag mounting guide is held so that the bending direction of the tip of the holding part inserted into the tube is along the tube longitudinal direction, the bag can be easily inserted into the tube by pushing the tube into the long cylinder. be able to.

[0032]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. [First Embodiment] FIGS. 1 and 2 show a bag 2 made of a rubberized cloth which is inflatable and shrinkable and which is connected to a resin tube 1 for supplying pressurized air (an example of a pressurized fluid) in a buried pipe A. 7 shows a long bag mounting guide C which is mounted in a contracted state in a damaged hole B opened in the tube wall of FIG.

The bag 2 is a parasol type gas bag which has been conventionally used for shutting off the inside of the gas pipe, and is adapted to be moved back and forth by pushing and pulling the tube 1.

The bag mounting guide C is a bag 2 in which the tip of a metal-made long cylindrical body 3 into which the tube 1 can be inserted is notched in a half-split cylinder along the longitudinal direction, and is folded into a long shape. A trough-shaped holding portion 4 is provided for holding so as to be able to slip out in the radial direction of the tubular body, and the holding portion 4 is configured to be insertable into the breakage hole B as described later.

By using the bag 2 and the bag mounting guide C, the broken hole B opened in the pipe wall of the existing buried pipe A is closed with the bag 2, and the leakage of the fluid in the pipe from the broken hole B is prevented. A method of repairing a pipe breakage hole according to the present invention will be described with reference to FIGS.
Will be described with reference to.

FIG. 3 shows that, during road construction or pipe burial work, a claw (an example of a digging member) D provided on, for example, an excavator of an excavator accidentally contacts the pipe wall and damages the pipe wall. A buried pipe A made of a resin such as polyethylene resin for city gas supply with an opening B is shown. In the ground extending between the damage hole B and the ground side, the movement path of the claw D when the damage hole B is opened. Claw movement trace E indicating is left as a hole.
The bag 2 is attached to the breakage hole B by utilizing.

First, as shown in FIG. 2, the bag 2 is folded into an elongated shape with the connecting portion 5 for connecting to the tube 1 positioned at one end side, and the tube 1 is inserted into the elongated cylindrical body 3 and The bag 5 is attached to the holding part 4 with the connecting part 5 extending along the guide longitudinal direction so that the connecting part 5 faces the guide base end side, and the connecting part 5 side enters the elongated cylindrical body 3, and the bag 2 is attached to the tip of the bag mounting guide C. Hold the guide so that it can slip out in the radial direction of the guide.

Next, as shown in FIG. 4, the holding portion 4 of the bag mounting guide C is inserted into the breakage hole B through the claw movement trace E, and the longitudinal middle portion of the bag 2 folded in an elongated shape is inserted. Insert it into the break hole B.

As shown in FIG. 5, the pressurized air supplied through the tube 2 cannot prevent the gas in the pipe (an example of the fluid in the pipe) from leaking from the breakage hole B, but escapes to the periphery of the breakage hole B. Bag 2 to the extent that it can be locked in the stopped state
Is inflated to allow the bag 2 to slip out from the holding portion 4 in the radial direction of the guide, and to be locked to the peripheral edge of the breakage hole B in a slip-out preventing state.

Next, as shown in FIG. 6, the bag mounting guide C is pulled back to the ground side, and the holding portion 4 is pulled out from the breakage hole B, leaving the bag 2 locked at the peripheral edge of the breakage hole B.
As shown in FIG. 7, the bag 2 locked around the periphery of the breakage hole B
Is further inflated to close the breakage hole B with the bag 2 and prevent the gas in the pipe from leaking out from the breakage hole B.

Then, as shown in FIG. 8, a pit 6 is formed by excavating so that the buried pipe portion around the breakage hole B is exposed, and the breakage hole B is airtightly surrounded by a no-blow bag 7, As shown in, the bag 2 is contracted in the no-blowing bag 7 to be removed from the damage hole B, and the adhesive sheet material 8 is attached to the pipe wall to close the damage hole B.

[Second Embodiment] FIG. 10 shows a bag mounting guide C used in the method of repairing a pipe breakage hole of the present embodiment, and the tip of the holding portion 4 of the bag mounting guide C shown in the first embodiment. The side of the bag is curved in the radial direction of the cylinder, and the bag 2
The guide surface 9 for guiding the pushing direction of the bag 2 is provided, and the bag 2 similar to that shown in the first embodiment is provided with the holding portion 4 thereof.
In addition to holding the bag so that it can be pulled out in the longitudinal direction,
The tube 1 inserted through the long cylindrical body 3 can be pushed out from the holding portion 4 along the guide surface 9 in the radial direction of the tubular body by the pushing operation, and other configurations are similar to those of the first embodiment. Is.

Two bags 2 and a bag mounting guide C
Using and, as in the first embodiment, the claw D provided on the excavator of the excavator accidentally contacts the pipe wall,
Damaged hole B in the pipe wall of the existing resin-made buried pipe A for city gas supply
11 to 16 show a method of repairing a buried pipe damage hole, which shuts off the inside of the pipe on both sides of the place where the damage hole B is sandwiched and prevents the gas in the pipe from leaking out from the damage hole B when the damage hole B is opened. It will be explained with reference to FIG.

First, as shown in FIG. 10, one of the bags 2 is folded into an elongated shape with the connecting portion 5 for connecting to the tube 1 located at one end side, and the tube 1 is formed into an elongated cylindrical body 3. The bag 2 is attached to the holding part 4 with the connecting part 5 inserted into the elongated cylindrical body 3 along the longitudinal direction of the guide so that the connecting part 5 faces the proximal end side of the guide, and the bag 2 is attached to the bag 2. The tip of the mounting guide C is held so that it can be pulled out in the longitudinal direction of the bag.

Next, as shown in FIG. 11, the holding portion 4 of the bag mounting guide C is inserted into the breakage hole B through the pawl movement mark E, and as shown in FIG. The bag 2 folded in a shape is pushed out from the holding portion 4 along the guide surface 9 to be inserted into one of the pipes at the portion sandwiching the breakage hole B.

Then, as shown in FIG. 13, the tube 1
The bag 2 is inflated by the pressurized air supplied through the bag so as to block the inside of one of the pipes that sandwich the breakage hole B, and the bag mounting guide C is pulled back to the ground side.

Next, with respect to the remaining bags 2, by the same operation as described above, the bag 2 is inserted into the other tube where the breakage hole B is sandwiched and inflated to shut off the inside of the other tube where the breakage hole B is sandwiched. Then pull back the bag mounting guide C to the ground side,
As shown in FIG. 14, the two bags 2 block the insides of the pipes on both sides of the portion sandwiching the breakage hole B to prevent the gas in the pipe from leaking out from the breakage hole B.

Then, as shown in FIG. 15, a pit 6 is formed by excavating so that the buried pipe portion around the breakage hole B is exposed, and the breakage hole B is airtightly surrounded by a no-blowing bag 7.
As shown in FIG. 16, in the no-blowing bag 7, the bag 2 is contracted and removed from the inside of the pipe through the damage hole B, and the adhesive sheet material 8 is attached to the pipe wall to close the damage hole 8.
Other configurations are similar to those of the first embodiment.

[Third Embodiment] FIG. 17 shows that the pipe wall of the resin-embedded pipe A can be cut by rotating the elongated cylindrical body 3 along the tip of the holding portion 4 shown in the first embodiment. Shown is a bag mounting guide C in which a saw blade 10 is provided in an arc shape,
When the breakage hole B in which the holding portion 4 is difficult to pass is opened in the pipe wall of the buried pipe A, the blade portion 10 is moved around the breakage hole B by rotating the long cylindrical body 3 as shown in FIG. The broken hole B can be expanded into a hole through which the holding portion 4 can be easily inserted, by causing a circular arc-shaped cutting action. Other configurations are similar to those of the first embodiment.

[Fourth Embodiment] FIG. 19 shows a saw blade capable of cutting the wall of the resin-embedded pipe A by rotating the long cylindrical body 3 at the tip of the holding portion 4 shown in the second embodiment. A bag mounting guide C having a circular blade portion 10 provided in an arc shape is shown, and in the case where a broken hole B in which the holding portion 4 is difficult to pass through is opened in the tube wall of the buried tube A, the same as that shown in the third embodiment. A long cylindrical body 3
The blade portion 10 can be caused to perform an arcuate cutting action on the pipe wall around the breakage hole B by the rotation operation of 1, and the breakage hole B can be expanded so that the holding portion 4 can be easily passed therethrough. Other configurations are similar to those of the second embodiment.

Other Embodiments 1. The method for repairing a broken pipe hole according to the present invention may use a bag which is made of an elastically expandable / contractible material and is expanded into a substantially spherical shape or a rugby ball shape by a pressurized fluid supplied through a tube. . 2. In the method for repairing a broken tube hole according to the present invention, the bag may be inflated with the pressurized water supplied through the tube. 3. The pipe breakage hole repairing method according to the present invention may be used to prevent the fluid in the pipe from leaking out from the breakage hole opened in the pipe wall of a buried pipe such as a gas pipe other than city gas or a water pipe. 4. The method of repairing a pipe breakage hole according to the present invention may be used to prevent leakage of fluid in a pipe from a breakage hole opened in a pipe wall of a metal buried pipe. 5. The method for repairing a broken pipe according to the present invention may be used to prevent leakage of fluid in a pipe through a broken hole opened by an earth auger, a boring bar or the like. 6. The method for repairing a pipe breakage hole according to the present invention may be used to prevent the fluid in the pipe from leaking out from the breakage hole opened in the pipe wall of the pipe installed on the ground or underground space. 7. The method for repairing a pipe breakage hole according to the present invention may be used to prevent leakage of fluid in a pipe from a breakage hole opened at a branch portion of a pipe. 8. In the method for repairing a broken hole according to the present invention as set forth in claim 1, the bag is sufficiently inflated so as to prevent the fluid in the tube from leaking out, and then the tip side of the bag mounting guide is pulled out from the broken hole to remove the broken hole. It may be closed.

[Brief description of drawings]

FIG. 1 is a perspective view of a bag mounting guide.

FIG. 2 is a perspective view of a main part of a bag mounting guide.

FIG. 3 is an explanatory diagram of a method for repairing a broken pipe hole.

FIG. 4 is an explanatory diagram of a method for repairing a broken pipe hole.

FIG. 5 is an explanatory diagram of a method for repairing a broken pipe hole.

FIG. 6 is an explanatory diagram of a method for repairing a broken pipe hole.

FIG. 7 is an explanatory diagram of a method for repairing a broken pipe hole.

FIG. 8 is an explanatory diagram of a repair method for a broken pipe hole.

FIG. 9 is an explanatory diagram of a method for repairing a broken pipe hole.

FIG. 10 is a perspective view of a main part of the bag mounting guide according to the second embodiment.

FIG. 11 is an explanatory view of a method for repairing a broken pipe hole according to the second embodiment.

FIG. 12 is an explanatory diagram of a method for repairing a pipe breakage hole according to the second embodiment.

FIG. 13 is an explanatory diagram of a method for repairing a pipe breakage hole according to the second embodiment.

FIG. 14 is an explanatory diagram of a method for repairing a pipe breakage hole according to the second embodiment.

FIG. 15 is an explanatory diagram of a method for repairing a pipe breakage hole according to the second embodiment.

FIG. 16 is an explanatory diagram of a method for repairing a broken pipe hole according to the second embodiment.

FIG. 17 is a perspective view of essential parts of a bag mounting guide according to a third embodiment.

FIG. 18 is an explanatory diagram of how to use the bag mounting guide according to the third embodiment.

FIG. 19 is a perspective view of essential parts of a bag mounting guide according to a fourth embodiment.

[Explanation of symbols]

A pipe B Damaged hole C bag installation guide 1 tube 2 bags 3 long cylinder 4 holding part 5 connection 7 No blow bag 8 sheet materials 10 blade

Claims (7)

[Claims] 1. A method of repairing a pipe breakage hole for preventing fluid in a pipe from leaking out from a breakage hole opened in a pipe wall, wherein an expandable / contractible bag has a connection portion with a pressurized fluid supply tube. Folded into a long shape while being located at one end side, let the longitudinal intermediate portion of the bag enter the damage hole, expand the bag with the pressurized fluid supplied through the tube, A method for repairing a broken pipe hole that prevents the fluid in the pipe from leaking out. 2. A long bag that can be inserted into the breakage hole at the front end side is used to guide the bag folded in the long shape so that the connecting portion faces the guide base end side. Along the direction, the bag mounting guide is held on the tip side of the bag mounting guide so as to be able to slip out in the guide radial direction, the tip side of the bag mounting guide is inserted into the damage hole, and the bag is folded into the elongated shape. The middle portion in the longitudinal direction is inserted into the breakage hole, the bag is inflated by the pressurized fluid supplied through the tube, and the bag is pulled out from the tip side of the bag mounting guide in the guide radial direction. Of the bag attachment guide is pulled out from the breakage hole, leaving the bag locked at the circumference of the breakage hole. It closes the damaged hole in sealed bags, repair method of claim 1, wherein the tube breakage holes to prevent leakage of the fluid inside the tube from the damaged hole. 3. A method of repairing a pipe breakage hole for preventing fluid in a pipe from leaking out from a breakage hole opened in a pipe wall, wherein two inflatable and retractable bags and a tip side are inserted into the breakage hole. Using a possible long bag mounting guide, fold the bag into a long shape with the connection part to the pressurized fluid supply tube located at one end side, and the connection part to the guide proximal end side. Along the guide longitudinal direction so that it faces,
The bag mounting guide is held so that it can be pulled out in the longitudinal direction of the bag, the distal side of the bag mounting guide is inserted into the tube through the breakage hole, and the tube is pushed out to be folded into the elongated shape. By pushing out a certain bag from the tip end side of the bag mounting guide, to enter the inside of one tube of the portion sandwiching the damage hole, by the operation of expanding the bag with the pressurized fluid supplied through the tube to shut off the inside of the tube, A method of repairing a pipe breakage hole, wherein the inside of the pipe on both sides of a portion sandwiching the breakage hole is blocked by the two bags to prevent leakage of fluid in the pipe from the breakage hole. 4. The pipe is a buried pipe for supplying gas,
The bag is opened and cut so as to expose the buried pipe portion around the damaged hole that prevents leakage of gas in the pipe, and the broken hole is airtightly surrounded by a no-blowing bag. The method of repairing a pipe breakage hole according to any one of claims 1 to 3, wherein a sheet material is attached to the pipe wall to remove the breakage hole and to close the breakage hole. 5. A bag mounting guide used in the method for repairing a pipe breakage hole according to claim 2, wherein the bag is formed by folding a long tube at the end of a long tubular body into which the tube can be inserted. A bag mounting guide provided with a holding portion that holds the tubular body in a radial direction so that the bag can be pulled out. 6. The bag mounting guide according to claim 5, wherein a blade portion capable of cutting the tube wall of the resin-embedded tube by rotating the elongated tubular body is provided at a tip of the holding portion. 7. A bag mounting guide used in the method for repairing a broken tube hole according to claim 3, wherein a bag folded in an elongated shape is provided at a distal end portion of an elongated tubular body into which the tube can be inserted. A bag mounting guide in which a holding portion that holds the bag in the longitudinal direction of the bag is provided, and the distal end side of the holding portion is curved in the radial direction of the cylinder.