JPH09229289A - Temporary sealing tool for broken hole of pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To seal a broken hole without stopping the gas flow by providing a dispersion pipe which communicates with the space surrounded by a sealing member of an attached surface and providing the dispersion pipe with a belt for pressing and fixing a shut-off valve and an attaching plate on the outer surface of the pipe. SOLUTION: When a broken hole 23 is made in a gas pipe and gas leaks, a recessed surface of the attaching plate 3 of a temporary sealing tool 1 for the broken hole of a pipe is put on the outer surface of a pipe 21. A sealing member 5 is pressed on the outside of the broken hole 23 such that it covers the outside of the broken hole 23, when a shut-off valve 9 of a dispersion pipe 7 remains open. Next, two belts 15 are wound around the pipe 21 and the attaching plate 3 at both side of the plate 3 and the sealing member 5 is put into close contact with the outer surface of the pipe 21 and the belt 15 is fastened, when gas dispersing out from the broken hole 23 is dispersed through the dispersion pipe 7. Last, a cock of the shut-off valve 9 is closed to stop the gas from dispersing through the dispersion pipe 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tube breakage emergency sealing device for temporarily sealing a breakage in a pipe for carrying a pressurized fluid such as city gas. Emergency repair equipment). In particular, the present invention relates to a tube breakage emergency sealing device suitable for easily and safely sealing a breakage while a gas or the like is ejected from the break.

[0002]

2. Description of the Related Art The prior art will be described by taking as an example the emergency repair of a rupture hole formed in the wall of a gas pipe. When a rupture occurs in the pipe that supplies city gas to many households (consumers), stop the gas flow in the pipe and immediately perform a radical repair (partial pipe replacement, etc.) It would be good if it could be done, but that would cause annoyance to many consumers, which is not preferable. Therefore, when a small-scale breakage occurs in the gas pipe, the breakage is sealed without stopping the gas flow.

As a method of temporarily sealing such a rupture hole,
Conventionally, the following three methods have been common. Method of filling waste with waste cloth and winding tape over it: FIG. 3 is a schematic view showing a situation of temporary sealing work of a pipe breakage by a waste filling and tape winding method.
First, a rag (rag cloth) 31 is filled in the break hole 23 formed in the wall of the gas pipe 21. Next, the periphery of the hole 23 including the waste 31 is wrapped around with a vinyl tape 33 so that the waste 31 does not protrude outside.
Prevent gas from leaking through the gap between the waste 31 and the rupture hole 23.

Method of using the split band-shaped tube rupture emergency seal: FIG. 4 shows how to perform the ruptured sealing of the tube rupture using the split band-shaped tube rupture emergency seal. It is a schematic diagram. Split band type sealing device 41
Has a main body 43 which is divided into two, as shown in FIG. The main body 43 can be opened and closed by a hinge. Further, a rubber 45 for sealing is adhered to the inner surface of the main body 43. This band type sealing tool 4
As shown in FIG. 4 (b), 1 is fitted so as to cover the outer periphery of the break hole 23 of the pipe 21, and the main body 41
The flanges 47 facing each other at one end are aligned and the flanges 47 are tightened with bolts 49. As a result, the sealing rubber 45 is strongly pressed against the outer surface of the pipe around the rupture hole 23, and the outflow of gas from the rupture hole 23 is prevented.

A method of driving a wooden plug into the puncture hole:
It is a schematic diagram which shows a mode of operation which drives a wooden plug into a puncture and seals a pipe puncture. When the rupture hole 23 is a round hole, a wood plug 51 matching the size of the rupture hole 23 can be driven into the rupture hole 23 to seal the rupture hole.

[0006]

The above-mentioned conventional emergency repair method has the following problems. With the method of filling the rupture hole with waste and wrapping the tape over it, it is possible to stop the gas ejection up to a gas pressure of about 1500 mmH ₂ O (in the case of a small diameter tube of 75 A or less), but if it exceeds that, I can't control the gush.

In the method of using the tube break hole emergency sealing device in the form of a split band, the tool cannot follow the damage caused by deformation or burrs of the tube, and the gas ejection cannot be completely suppressed. The method of driving a wooden plug can only be applied to a round hole with a clean rupture shape. Further, any of these methods is a method of directly closing the gas ejection portion (hole), and it is necessary to perform repair work near the gas ejection portion, which is dangerous.

[0008] The present invention provides a tube rupture emergency sealing device which is suitable for easily and safely sealing a gas rupture in a pipe in a state where the gas is ejected from the rupture hole. With the goal.

[0009]

In order to solve the above-mentioned problems, a tube rupture hole emergency sealing device of the present invention temporarily seals a rupture hole formed in a tube wall of a tube for conveying a pressure fluid. An attachment plate having an attachment surface of a shape suitable for attaching to the outer surface of the tube, a sealing material attached along the periphery of the attachment surface, and an opposite attachment surface side of the attachment plate A discharge pipe that is erected on the outside of the pipe, the inside of which is in communication with the space surrounded by the sealing material on the attachment surface, the shutoff valve attached to this diffusion pipe, and the attachment plate pressed against the outer surface of the pipe. And a belt for fixing.

With the cutoff valve of the diffusion pipe opened, the attachment surface of the attachment plate is applied to the periphery of the breakage hole of the pipe, the attachment plate is fastened to the pipe with a belt, and the attachment surface is brought into close contact with the outer surface of the pipe. During this time, the pressure fluid flowing out from the rupture hole can go out through the diffusion pipe, so that the pressure is not applied to the attachment plate, and the amount of gas ejected in the vicinity of the work is small, which is safe. After the belt is tightened, if the shutoff valve of the diffusion pipe is closed, the pressure fluid ejection from the diffusion pipe is stopped. Further, since the sealing material seals between the attachment surface and the outer surface of the pipe, pressure fluid leakage does not occur.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a more detailed description will be given with reference to the drawings. FIG. 1 is a view showing a tube rupture emergency sealing device according to an embodiment of the present invention. (A) is a perspective view seen from the upper side of the attachment plate, and (b) is a perspective view seen from the lower side of the attachment plate. The tube breakage emergency sealing device 1 of FIG. 1 is composed of various parts such as an attachment plate 3, a diffusion pipe 7, and a sealing material 5. The attachment plate 3 has a shape obtained by cutting a part of a cylindrical outer wall (made of resin or the like) into a square shape.

A diffusion pipe 7 is provided upright at the center of the outer surface of the attachment plate 3 on the convex surface side. The two are hermetically connected by fusion welding or the like. Of course, other materials and connection methods may be used. As shown in FIG. 1B, a hole 13 is formed in a portion of the attachment plate 3 where the diffusion pipe 7 stands, and the concave side of the attachment plate 3 communicates with the inside of the diffusion pipe 7. . At the base of the diffusion pipe 7, a shutoff valve 9 (opening / closing cock) is provided. The attachment position of the diffusion tube 7 to the attachment plate 3 is
It may be at a position deviated from the center of the attachment plate 3 as long as it is inside the sealing material 5 described later. Further, the erecting direction of the diffusion pipe may also be an inclination direction, or the diffusion pipe 7 itself may be an elbow shape or the like.

A sealing material 5 is attached to the outer peripheral edge of the concave side (additional surface 11) of the attachment plate 3. The sealing material 5 is
The same material and thickness as the rubber for sealing of the conventional split band type sealing device may be used. The shapes of the surface of the attachment surface 11 and the sealing material 5 are preferably cylindrical surfaces having substantially the same curvature as the outer peripheral surface of the pipe to be sealed. As described above, the diffusion hole 13 communicating with the diffusion pipe 7 is opened in the central portion of the attachment surface 11 surrounded by the sealing material 5.

Next, a method for using the tube rupture emergency sealing device of FIG. 1 will be described. FIG. 2 is a perspective view schematically showing a method of using the tube rupture temporary emergency sealing device of FIG. First, FIG.
In (a), a rupture hole 23 is formed in the gas pipe 21 and a gas leak occurs from there. Here, the tube breakage emergency sealing device 1 is pressed so that the concave surface (additional surface) of the attachment plate 3 is attached to the outer surface of the tube 21 and the sealing material 5 surrounds the outside of the breakage hole 23. . At this time, the shutoff valve 9 of the diffusion pipe 7 is opened.

Next, as shown in FIG. 2B, the attachment plate 3
The two belts 15 are wound between the outer surfaces on both left and right sides of the pipe 21 and the pipe 21, and the belt 15 is tightened so that the seal material 5 is sufficiently adhered to the outer surface of the pipe 21. At this time, the gas leaking from the rupture hole 23 passes through the diffusion pipe 7 and is discharged from the tip thereof. Finally, as shown in FIG. 2 (c), when the cock of the shutoff valve 9 is closed, the gas diffusion from the diffusion pipe 7 is stopped.
At this time, gas pressure in the pipe is applied to the concave surface (addition surface) of the attachment plate 3, but gas leakage is prevented by the sealing effect of the sealing material 5.

[0016]

As is apparent from the above description, the pipe rupture emergency sealing device of the present invention exhibits the following effects. In the case of a buried pipe in the ground, it is possible to release some gas from the diffusion pipe to the ground simply by installing a sealing tool on the damaged part of the pipe from the ground, so it is dangerous to work in the drill hole. Sex and difficulty can be reduced. Since the work is performed while allowing the gas to escape, there is no escape path for the gas at the seal portion, and it is possible to easily perform the sealing. Since the central part of the inner surface of the body creates a space with respect to the outer peripheral surface of the tube and the sealing tool body itself can be made flexible, damage such as deformation or burr in the tube can be repaired. .

[Brief description of drawings]

FIG. 1 is a view showing a tube rupture hole emergency sealing device according to an embodiment of the present invention. (A) is a perspective view seen from above the attachment plate,
(B) is a perspective view seen from the lower side of the attachment plate.

FIG. 2 is a perspective view schematically showing a method of using the tube rupture hole emergency sealing device of FIG.

FIG. 3 is a schematic view showing a situation of a temporary sealing work of a tube breakage hole by a waste filling and tape winding method.

FIG. 4 is a schematic view showing a state in which a tube break hole emergency sealing tool having a split band shape is used to perform an emergency seal work for a tube break hole.

FIG. 5 is a schematic view showing a state of a work of driving a wooden plug into a rupture hole to seal the puncture hole in the tube.

[Explanation of symbols]

 1 Pipe Breaking Hole Emergency Sealing Device 3 Attaching Plate 5 Sealing Material 7 Emission Tube 9 Shutoff Valve 11 Attaching Surface 13 Emission Hole 15 Belt 21 Pipe 23 Breaking Hole 31 Wes 33 Tape 41 Split Band Type Sealing 43 Body 45 Sealing Rubber 47 Flange 49 Bolt 51 Wood Stopper

Claims (1)

[Claims] 1. A device for temporarily sealing a puncture in a tube wall of a tube for carrying a pressurized fluid; an attachment surface having a shape suitable for attaching to an outer surface of the tube. The attachment plate has a sealing material attached along the periphery of the attachment surface, and a diffusion pipe erected on the opposite attachment surface side of the attachment plate, the inside of which is surrounded by the sealing material of the attachment surface. A pipe breakage emergency sealing device comprising: a diffusion pipe communicating with a space; a shutoff valve attached to the diffusion pipe; and a belt for pressing and fixing a support plate against the outer surface of the pipe.