JP2001355788A - Broken hole sealing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sealing device that can seal a broken hole under no constraints by the size and position of the broken hole and by the outside diameter or gas pressure of piping or a gas storage tank. SOLUTION: The broken hole sealing device for an emergent seal of the broken hole in a pipe or a storage tank comprises a support bar 10 with one end having a head portion 10a and the other end having a thread 10b cut therein and a hanging string 16 fixed thereto, a nut 14 capable of threading with the support bar thread portion, an inner support plate 11 having a hole in a center where the support bar shank portion penetrates, an elastic sealant 12 having a hole in a center where the support bar shank portion penetrates, and an outer pressure plate 13 having a hole in a center where the support bar shank portion penetrates.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for sealing a puncture without stopping gas transport when a puncture occurs in an outer wall of a piping or a storage tank for transporting a flammable pressure fluid such as a coke oven gas. The present invention relates to a sealing tool to be used.

[0002]

2. Description of the Related Art In an ironworks, flammable gas, which is a coke oven gas, a converter gas, a blast furnace gas, or a mixed gas thereof, is transported from a generator to a storage device or from a storage device to a gas use facility by piping. I have. In such a gas transport pipe, if a puncture occurs in the pipe pipe wall, the upstream valve or the like is closed to replace the punctured pipe with air, thereby closing the punctured section or replacing the punctured pipe. Such repairs are generally performed, but depending on the condition of the downstream equipment, the hole may be sealed in an emergency while gas is flowing through the piping.

[0003] As an emergency sealing method of this hole,
There are the following: Japanese Unexamined Patent Application Publication No. 9-229289, an attachment plate having an attachment surface having a shape suitable for attaching to the outer surface of a pipe, a sealing material provided along the attachment surface, and a surface opposite to the attachment surface of the attachment plate. A pipe provided with a diffusion pipe communicating with a space surrounded by the sealing material on the auxiliary surface, a shutoff valve provided on the diffusion pipe, and a belt for pressing and fixing the auxiliary plate against the outer surface of the pipe. A method using a puncture emergency closure. As shown in FIG. 7, one end is provided with a screw, and the other end is processed into a shape suitable for attaching to the outer surface of the pipe. Attach with Agent 5. A sealing method in which after the curing agent is cured, a blind cap 4 is attached to the short pipe thread portion to prevent gas leakage.

[0004]

However, according to the above-mentioned method, a sealing member including a sealing plate provided with a sealing material, a diffusion tube, and a shutoff valve is fixed to an outer surface of the tube with a belt.
When applied to a large-diameter pipe having an outer diameter of more than φ2000 mm, the cost is high and the workability is poor and difficult.
In particular, as shown in FIG. 8, the puncture hole 3 has a T-shaped branch in the pipe 2, and as shown in FIGS.
If it is in the position of the saddle 7 for attaching the pipe 2 to
There is a construction problem that the belt cannot be fixed.

[0005] The above method cannot be applied to a large puncture or a gas pressure exceeding 9800 Pa due to restrictions on the strength of the curing agent. In addition, when deformation or burrs are generated around the breach hole 3, the short pipe is insufficiently attached, so that leakage of gas cannot be prevented.

[0006] The present invention solves the above-mentioned problems, and provides a seal capable of sealing a hole without being restricted by the size and position of the hole, the outer diameter of a pipe or a gas storage tank, or gas pressure. The purpose is to provide a stop.

[0007]

According to the present invention, the above object is achieved by the following sealing device. The sealing device according to claim 1, wherein a head is provided at one end, a screw is provided at the other end, and a support bar having a suspension thread attached to the other end, a nut screwed into the support bar screw portion, and a center. An internal support plate having a hole through which the support rod body is passed, a sealing material having elasticity and having a hole through the support rod body at the center, and an exterior having a hole through the support rod body at the center. And a holding plate.

According to this sealing device, the suspending thread is gripped and the support rod is inserted into the inside from the hole, then the suspending thread is passed through the hole of the internal support plate, and the internal support plate is supported by the head of the support rod. Then, the suspending thread is pulled up, and the internal support plate can be engaged with the inner wall across the breach hole. Next, the sealing material and the external holding plate are passed through the support rod that is outside the outer wall in order, and the nut is screwed into the support rod thread. Sealing. This sealing operation can be performed while gas is being transported.

The sealing device according to a second aspect is the sealing device according to the first aspect, wherein the internal support plate is rotatably attached to the head side of the support rod.

If the support rod and the internal support plate are integrated as described above, it becomes difficult to lose the support rod and the internal support plate during storage and transportation. Also, when the support rod and the internal support plate are inserted into the inside from the hole, the internal support plate is rotated along the support rod,
What is necessary is just to incline and make the projection area small.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing a state in which the puncture sealing device according to the present invention is attached to a pierced pipe.
As shown in FIG. 1, the pipe hole sealing device includes a support rod 10, an internal support plate 11, a sealing material 12, an external holding plate 13, and a nut 14.

The internal support plate 11 has a rectangular shape, and has a short side shorter than the hole diameter and a longer side longer than the hole diameter, and has an elongated hole in the center through which the body of the support rod 10 is inserted. After the internal support plate 11 is inserted into the pipe through the breach hole, when the internal support plate 11 is pulled up through the support rod 10, the long side of the internal support plate 11 may be locked to the pipe inner wall, and especially the shape along the pipe wall. You don't have to. Since the elongated hole is provided to incline the internal support plate 11 through a hole through a support rod or the like to be described later, a large round hole may be used as long as it can be inclined.

The support rod 10 has a head 10a at one end,
At the other end, a screw 10b with which the nut 14 is screwed is formed. The head 10a of the support rod is sized to support the internal support plate 11 with the head 10a when the body of the support rod 10 is pulled up by inserting the body of the support rod 10 into the elongated hole of the internal support plate 11. One end of a suspending thread 16 (metal wire, cotton string, synthetic resin string, etc.) for suspending the support rod 10 is attached to an end of the support rod 10 where the screw is cut.

The sealing material 12 is a circular or rectangular plate larger than a perforation made of a resilient and flexible material such as rubber, and has a hole in the center through which the body of the support rod 11 is inserted. . As shown in FIG. 1, when the nut 14 was tightened and the sealing material 12 was pressed against the outer wall of the pipe 2 by the external pressing plate 13 as shown in FIG. The diameter of the body of the support rod 11 is slightly smaller than the diameter of the body of the support rod 11 so that sometimes no gap is formed between the hole wall of the sealing material 12 and the body of the support rod 11.

The outer pressing plate 13 has the same size as the sealing material 12 for pressing the sealing material 12 against the outer wall of the tube.
It has a hole through which the support rod 10 passes in the center.
It is preferable to form the external pressing plate 13 along the curved surface of the outer wall of the tube, because the sealing material 12 can be uniformly pressed against the outer wall of the tube, and the gas seal can be more reliably performed.

FIGS. 2 and 3 show another example of the puncture sealing device. In this example, the support rod 10 and the internal support plate 11
And are integrated. That is, the head 10 of the support rod 10
An insertion hole is formed directly above a, and an insertion hole is formed in the center of the side surface of the internal support plate 11, the pin shafts 15 are passed through both the insertion holes, and both ends of the pin shaft 15 are caulked to be integrated. The diameter of the insertion hole of the support rod 10 is slightly larger than the diameter of the body of the pin shaft 15 so that the support rod 10 can be tilted with respect to the support rod 10.
When the internal support plate 11 is rotated, the support rod head 1
Since 0a is an obstacle, the head 10a is cut off as shown in FIG. 3 to form a cut surface 10c.

As described above, the support rod 10 and the internal support plate 11
If these parts are integrated, it becomes difficult to lose these parts during storage and transportation, and when they are put into the pipe through the breach hole, as shown in FIG. Can be reduced to make it easier to put into a hole. In addition,
In the case of this example, the support force when the puncture seal is attached to a pipe or the like is transmitted to the support rod through the path of the internal support plate 11 → pin shaft 15 → support rod 10.

Next, a method of attaching the puncture sealing device will be described with reference to FIGS. 5, 6 and 1.

The hanging rod 16 is gripped and the support rod 10 is inserted into the pipe 2 from the breach hole 3. The suspension string 16 is passed through the hole 11a of the internal support plate 11, the internal support plate 11 is inclined as shown in FIGS. 5 and 6, the short side of the internal support plate 11 is inserted into the hole 3, and the suspension thread 16 is used as a guide. And insert it inside the piping. The internal support plate 11 moves along the body of the support rod 10 and is supported by the head 10a of the support rod. By manipulating the hanging thread 16 or the body of the support rod 10 pulled out, the internal support plate 1
The posture of the internal support plate 11 is adjusted so that 1 crosses the hole 3 and both ends are locked to the inner wall around the hole 3. The internal support plate 11 is locked to the inner wall of the pipe, and the sealing material 12 is passed through the body of the support rod 10 protruding outside the pipe 2; see FIG.
Further, the external pressing plate 13 is passed. Support rod screw 10
Engage the nut 14 with the part b, turn and tighten the nut,
The sealing material 12 is pressed against the outer wall of the tube via the external pressing plate 13 to seal the leakage of gas; see FIG. In this operation, if the paste-like sealing agent is applied to both surfaces of the sealing material before the sealing material 12 is attached, the sealing effect is further improved.

When the support rod 10 and the internal support plate 11 are sealed by using an integrated member as shown in FIGS. 2 and 3, the internal support plate 11 is rotated and tilted as shown in FIG. In this state, the hanging thread 16 is gripped, the support rod 10 and the internal support plate 11 are inserted into the pipe 2 through the breach hole 3, and the gas leakage is sealed through the above-mentioned operations (1) to (4). Support rod
When the internal support plate integrated type is used, the above-described operation time can be reduced when sealing a breach that has occurred in a lateral wall such as a pipe.

[0021]

According to the puncture sealing device of the present invention, the following effects can be obtained. According to the sealing device of the first aspect, the support rod and the internal support plate can be inserted into the inside through the breach by a fishing line from the outside, without stopping gas transportation and without being restricted by gas pressure. Gas leakage from the breach can be sealed in an emergency.

According to the second aspect of the present invention, the support rod and the internal support plate are less likely to be lost during storage and transportation.
By inclining the internal support plate along the support bar, the internal support plate can be inserted into a pipe or the like from a breach hole, and the working time can be reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a state in which a puncture seal according to the present invention is attached to a pipe that has been punctured.

FIG. 2 is a plan view of an example in which a support rod and an internal support plate according to the present invention are integrated.

FIG. 3 is a side view of an example in which a support bar and an internal support plate according to the present invention are integrated.

FIG. 4 shows an example in which a support rod and an internal support plate are integrated.
It is a side view which shows the state which inclined the internal support plate along the support bar.

FIG. 5 is a sectional view of a pipe showing a state in which a support rod and an internal support plate are inserted into a pipe from a breach hole.

FIG. 6 is a piping perspective view showing a state in which a support rod and an internal support plate are inserted into a pipe through a hole.

FIG. 7 is a cross-sectional view showing a state in which a hole is sealed with a conventional pipe hole sealing device.

FIG. 8 is a perspective view showing a state in which a hole is formed in a T-shaped branch portion of the pipe.

FIG. 9 is a front view showing a state in which a hole is formed on a saddle supporting a pipe.

FIG. 10 is a side view showing a state in which a hole is formed on a saddle supporting a pipe.

[Explanation of symbols]

 2 Piping 3 Rupture 10 Support rod 10a Head 10b Screw 11 Internal support plate 11a Hole 12 Sealing material 13 External holding plate 14 Nut 15 Pin shaft 16 Suspension thread

Claims (2)

[Claims] 1. A head is engraved on one end and a screw is engraved on the other end.
A support rod having a hanging thread attached to the other end, a nut screwed into the support rod screw portion, an internal support plate having a hole for passing the support rod body in the center, and elastic, and the support A puncture sealing device comprising a sealing material having a hole through which a rod body is passed, and an external pressing plate having a hole through which the support rod body is formed at the center, for quickly closing a puncture in a pipe or a storage tank. . 2. The puncture sealing device according to claim 1, wherein the internal support plate is rotatably attached to the head side of the support rod.