JPS5940085A - Method of sealing construction of pipe joint section - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention provides sealing from the inside of the pipe in order to prevent leakage of all pipe joints during the internal surface treatment process of water whistles, waste pipes, etc. Regarding the sealing method of the section.

In the existing gas distribution room, due to the drying of the supply waste in the high-medium ffli supply system, the seal opening of the pipe joint
It may turn into fine dust and fly into the gas, causing a leak. A known method for repairing a pipe joint while it is buried is to use the inner surface of the pipe as a sealing material for the pipe joint. ! is not sufficient to maintain the airtightness (j) of the joint.
Although j becomes thicker, it does not have the effect of reinforcing the seal 14, which has become roughly filled, and preventing leakage 11-. In this case, since the sealing material and the lining layer are not substantially integrated, the cracks in the lining layer are removed from this location.
There is a risk of early damage and leakage.

The present invention has been made based on the circumstances described in Article L, and is made by infiltrating a penetrant into the sealing material under pressure from the inside of the pipe at the pipe joint, which is the cause of J5C leakage, from the inside of the pipe. By assimilating this, we aim to increase the density (13) and strength of the sealing material itself and prevent cracks, damage, and leakage from the joint. be.

For this purpose, the present invention provides an airtight IJ whose peripheral surface is attached to the inner wall surface of the pipe.
Connect the pair of pigs that move in contact with H with connecting lobes, interpose agent A between both pigs, and insert them into the body in contact with IJ. Means C'move;
The penetrant is pressurized and infiltrated into the pipe joint by applying both pigs in the direction toward each other when the pipe joint is located between the two pigs. It is.

Hereinafter, one embodiment of the present invention will be specifically described with reference to the drawings. In the figure, J3, Shuzuki I Jj and 2 are hollow bullets such as rubber bullets tI1. f4i J, is a round spherical pig, with both fronts (,1, [''-pu3 by (
It is connected to j. For the above Bik IJ3J and Bi2,
- On the opposite side there are tractions 14 and 5.A3 If necessary, there is a scale G /J< Introducing the above-mentioned pigs 1 and 2 into the existing pipe 7, which has been installed (9), and comparing the above-mentioned pigs 1 and 2 by a reasonable means. Low target viscosity - Fill with liquid phase penetrants such as boxy resin; avoid pongee.

In this state, pull one of the tow pipes 4 or 5 and move the pipes 1 and 2 with J3 inside the pipe so that the pipe fitting 8 is between the pipes 1, a3 and 2. . This amount of traction may be measured using a TV camera etc. introduced in ↑3, but if the position of the tube is known in advance, 1-bu4 or (There is also a way to recognize this by reading the L5 scale.

With the pigs 1jJ3 and 2 moved to this appropriate position, for example, apply pressure [ ] 1 (pressure 1 - air) from one pipe end, and apply pressure [ ] from the other pipe end. When the pressurized waste (pressurized air) is supplied, both pigs IJ>J and 2
t,t,? Pressurized movement in the direction approaching 7 11,
This fills the gap between both pigs 1 and 2.
- The penetrant is pressurized and permeates and impregnates the sealing material 9 of the pipe joint made of hemp or the like.

In this way, after the sealing of each pipe joint has been completed, the inner surface of the entire pipe can be coated secondarily. The actual coating layer and the sealing layer 9 can be integrated, and sealing with sufficient strength can be achieved here.

<7 J5, traction D - "f 4 jJ3 (f 5 (
i'! li k-Li is used only for saftl measurement, and the movement of bigs 1 and 2 is based on the difference in scum level P i < P 2
Of course, in relation to J, UbJ, and UbJ. In this way, 1) Applying pressurized waste to the inside of 1) prevents the leakage of the penetrant from the surface contact areas 1 and 2 of 1 and 2. .

In addition, there is a branch pipe 11 in the middle of the pipe 8! Association, 1st chapter 11
Supply 6 pressurized waste to -C1 here? Outflow of u3Δ agent and outflow of coating material are determined by l1JI, +, 1. : n
Of course, we must take this into consideration.

The present invention uses the above-described J, Uni, and Senkin'1000 parts to infiltrate a penetrant into the seal from the inside of the tube and solidify it, thereby creating a seal shrine. Increasing the density and strength of the substance, and its stickiness at -! In the internal repair carried out at 1G℃, the integration of the coating layer was achieved, and the pipe joint part was cracked and damaged.

14) It has the excellent effect of being able to reliably prevent hot water from leaking.

[Brief explanation of drawings]

The figure is a vertical sectional side view showing an embodiment of the present invention. Scale, 7... Existing pipe, 8...
・Pipe joint part, 9... Seal shrine, 11... Branch pipe, Δ・
... Penetrant. Patent applicant Hara Co., Ltd. - Agent Patent attorney -
1st grade (n. Susumu Murai, patent attorney)

Claims (1)

[Claims] A pair of pigs whose peripheral surfaces move in airtight contact with the inner wall surface of the pipe,
They are connected to each other by connecting lobes, and inserted into the pipe body in state 7j with a penetrating agent interposed between the two pigs, and the above-mentioned bigs are moved at an appropriate 'f=82 between the two pigs U-1. When the pipe joint is in position, the penetrating agent is pressurized and infiltrated into the pipe joint by pressurizing the two bigs in a direction approaching each other. [Law.