JPS5940086A - 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] This light is designed to cover water pipes, gas pipes, etc. with a seal from the inside in order to prevent internal leakage and leakage at the pipe joint. , ↑Relates to the sealing method of 10 parts.

Due to the drying of the gas supplied to the existing gas piping system, the seal tops at the pipe joints may be blown into the dust and reach 11. What could be the cause of this?To repair the pipe joint (as described above) while it is still buried, seal it and impregnate it with a penetrant, and then ] - It is often the case that a coating agent is applied to the pipe joint.In this case, as a way to check the position of the pipe joint from the inside, use a 7-Level camera (Yamakawa C, but J on the existing pipe diameter, then the above TV). Cameras can be difficult to use, and must be handled with great care, requiring considerable skill on the part of the operator.Furthermore, if a TV camera breaks down, work can be completely interrupted. Yes, sometimes.

The present invention (311, -1) has been made based on the circumstances described in Section 2, and if the position of the pipe joint part is confirmed before turning the piping diagram <i C1, .

This paper aims to provide a sealing method for pipe joints in which the position of the pig corresponding to the position of the pipe joint can be certified using the drawer fan of [Draw II-], and the seal 4A can be impregnated with a penetrant. be.

For this purpose, the present invention connects a plurality of vigs with interconnecting lobes, and inserts a penetrating agent into the space between the vigs to insert an A31 bulge into the existing pipe. sealing and coating on the inner surface of the pipe (in addition, the amount of movement of the IN-P that pulls the above-mentioned VIG was measured at S1 outside the existing pipe, and the position of the pipe joint was certified. Features:

Hereinafter, one embodiment of the present invention will be specifically described with reference to the drawings. In the figure, J3-C11°J + J3 and 2 are hollow gonos, 41 which bullets are spherical bigs with a rest, and both tJ: D-G3 is J, - ,)−
(The ropes 4 and 5 are connected to the above big T d5 and 2. The ropes 4 and 5 are installed on the opposite side of the big T d5 and 2. 6. -[Outside the existing pipe 6, for example, the above-mentioned tow 1''-
Winding and holding drums 4 and 5, the drum 117J>J, and 8 are placed on the front stage of the reciprocal drum 7.8.
- Layers 9 and 10 are installed. and [-Bimblov 9
The rotation H1 is attached to the J: and 10, and the rotation speed increases to achieve the best traction of 4.5. ,,Towing rope 4,! .

If slippage occurs between the and the pinch [1-ra 9, 10, S
Since there will be an error in each measurement, you may want to mark the scale at 4.5 so that you can read the error.

Alternatively, the tow ropes 4 and 5 may be provided with knots, and the knots may be provided in advance on the runners 9 and 10 and fitted into the lJ engagement grooves to prevent slipping.

Then, the above-mentioned Vigs 1 and 2 are introduced into the existing pipe G to be repaired, and during this introduction, a liquid phase of relatively low viscosity such as Fill with penetrating material A.

In this state, the pulling row 14 or 5 is pulled by the drum 7 or 80 winding operation, the bigs 133 and 2 are moved, and the pipe joint part 11 is covered between the above-mentioned bigs IJ3 and 2. This amount of traction is measured by a rotation set on the pinch roller 9 or 10. Normally, the pipe joint is located 5 meters or 6 meters in the direction of the existing pipe, and if the pipe joint iQ neck is confirmed in advance on the piping diagram at the time of construction, the above-mentioned lobe With a pulling amount of , it is possible to match the pipe joint position with a width of 1°2.

In this state, for example, pressurized gas at pressure P1 is introduced from the pipe end h and pressurized gas at the same pressure P1 is introduced from the other pipe end to bring bigs 1 and 2 close to phase U in the existing pipe. By applying osmotic pressure to the penetrant Δ between τ, the seal 121J of the pipe joint 11 is impregnated with the penetrant.

After repeating this process to impregnate each joint in the existing pipe to be treated with the penetrant, the inner surface of the pipe may be coated with an Evo-A resin agent. It forms IIQ.

As described above, according to the present invention, when sealing the pipe joint J section of an existing pipe, lr/'? of the pipe gf section? If J is confirmed in advance using piping diagrams etc. at the time of construction, the position of the VIG that corresponds to the pipe joint position can be certified by the amount of pull out of the towing rope that pulls the VIG, so a special TV will be used. There is no need to use a camera or the like to check the pipe joint position, but using a rope to pull the VIG makes it easy to install.

It is possible to prevent gas leakage at the pipe joint by impregnating the sealing material at the pipe joint with a penetrant through simple means.

In addition, when moving the bigs with a tow rope, there is no compression between the bigs during the movement process, so if a branch pipe is branched into a branch pipe, for example, there is a problem that the penetrant may flow into the branch pipe. is avoided.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional side view showing an embodiment of the present invention, and FIG. 2 is a longitudinal sectional side view of the device impregnated with a penetrant. 1.2...big, 3...[-1-bu, 4,5...
Traction 0-bu, 7, 8... Drum, 9, 10... Pinch roller, 11... Pipe joint part, 12... Seal material,
6... Existing pipe patent applicant Hatsuko Co., Ltd. Agent Patent attorney Nobuuki Kobashi

Claims (1)

[Claims] ? A number of big 3! ! Sealink of the pipe fitting part that is connected to the pipe joint 1-1-b and inserted into the existing pipe by inserting a penetrant agent and a ml-tension agent in the space between the pipes mentioned in -1, and the inner surface of the cylinder. 1] - I was at the person doing the aing, measured the movement of the n-bu towing the ignition, and determined the position of the existing flute IC. A sealing method for pipe joints that takes -1″I.