JPS5942071A - Repairing method of the inside of pipe - Google Patents

Abstract

PURPOSE:To repair the inside of a pipe with a series of continuous operations with high efficiency, by penterating and solidifying a penetrant in a sealant in a pipe joint part by using pigs from the inside of the pipe then applying a coating agent on the inside of the pipe. CONSTITUTION:Spherical pigs 1, 2, 3 each consisting of an elastic material are connected by means of ropes 4, 5 and are introduced into a pipe 9. A penetrant A is filled between the pigs 1 and 2 in the stage of said introduction and a coating agent B is filled between the pigs 2 and 3. A traction rope 6 is towed to bring a pipe joint part 10 to the space between the pigs 1 and 2. A pressure P1 is exerted from the one end of the pipe to penetrate and impregnate the penetrant A into the sealant 11 in the part 10. The pigs 1, 2, 3 are then advanced to force the coating agent B to leak from the circumference of the pig 3 at the rear end, thereby forming a coating layer 12 on the inside wall surface of the pipe. The time for execution of the repair in the pipe is reduced by the above- mentioned method.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a system for reducing water costs and water costs within the jurisdiction.

In existing gas piping, due to the drying of the supply gas using the high-medium pressure 1-Li type, the seals at the pipe joints have become slightly smaller.
It may turn into a yoke and fall into the gas, causing a leak. As shown in 1-1, connect the pipe joint part to j! I! A known method for covering the stepped state is to use the pipe 11 as a sealing scoop while leaving the sail/inner coach C-leg agent in place. It is sufficient to maintain the airtightness of the
- Coat the resin/f two more times using a backer on the inner surface of 4e.
However, the seal (reinforces 2 and
IJ is effective in preventing leakage. In this case, since the seal shrine and the lining layer are not substantially integrated, cracks occur in the lining layer from this point, and the sealing layer quickly becomes 1υj.
There is a Kiran that is damaged and leaks occur. Therefore, the seal H
Against the package, from the inside b! Impregnated with penetrating agent, its contact
A method was proposed in which the impregnated sealing material described in 1. and the coating layer were oxidized. However, in this case, it is necessary to perform six operations individually, which has the disadvantage that the execution time is doubled.

Based on the above circumstances, the present invention is based on the above-mentioned circumstances.
? 214 + AII C-0-+ Soaking;, A Soaking of i agent 111 To, τ; Inner By D λ = I (1,! (,j
A monkey in Ensei. j) (, 2 1.: Within the jurisdiction? + li ei earthwork law flt LJ,) and the sign - (there is.

. =σ Month 1 of 7, the present invention has some? '141
Method 1. The inside of the five tubes connected through the 4'-f section is 1-derged. -Oi゛(, surrounding or 1" 1 i1t
Connect 33 pigs in airtight contact with the movable pigs [1-1 connects directly to 9+1, and apply IJ penetrant between the two pigs (2-) in the front/), Between Ij :j --y
- Ink (Iwo, -derezo 1'shikojshin 1., Mae/) between the two pigs tTh II hand force 41/u'! ''J
6115, both ends 1'11. Apply varnish, pressurize, soak] Δ agent and apply penetrant to the pipe joint part. It is characterized by the fact that -1-j ink treatment on the inner surface of the tube is simultaneously achieved by leaking the -J-terminal material from the peripheral surface of the tube.

An embodiment of the present invention will be described in detail with reference to the drawings. In the figure, the symbols 1, 2 J> and 31.1
, 1 bullet of rubber etc. with 1 hollow inside is 11 small (7
It is a 6-spherical pig, and the three sides 1, 2 a3 and the rear TZ 2.3 are connected by [1-14,5, respectively]. Pig 1 at the front end above ctj
and the rear end pig 3 has a tow 1]-16 on the opposite side.
, 7 are connected i. , please refer to the above [1-
Pro Jj and L are provided with a scale 8 for measuring the moving length of A.

Then, C
During this introduction, the space between the pigs 1 and 2 is filled with a liquid-phase penetrant such as a relatively viscous 11-boxy resin.

Further, the spaces between the pigs 2 and 3 are filled with a liquid-phase -1-'''I-ing agent] 3 such as a relatively high viscosity T-boe resin.

In this state (by pulling the towing 11-16 in the direction of the arrow, the pipe joint 10 will come between the pigs I J5 and 2. This towing 11 eye 3L, a television camera introduced into the pipe, etc.) Alternatively, if the pipe joint position is known in advance and there is one, there is also a method of recognizing it by reading the traction 1"-76 or l scale 8.

This passage + 1"<= I Supplying the pipes, both pigs I Jj and 22 Ji, 1: ff 3 filled with f23'f = agent A Jj J: human Tl -7
Agent/Agent II 1. L #ll Jl Sanel 1, this addition J-1: Ni J, Fig; <l.

Next (Pig 1.2J>J, and 3 are moved forward, but in the process, the 21-Temeng agent BIJ leaks from around the pig 3 at the rear end, forming a coating layer 12 on the inner wall surface of the pipe. .JI/I of this 1-term 11112, 1,
t+2 I'' around the pig 3 at the ij end with the gap G between it and the inner wall surface
rj 7'7.

This J, sea urchin primary impregnation action and secondary coping action can be performed continuously and simultaneously at the same time during one movement of the pig. 1 to 11 (
It will decrease. However, the impregnated sealant 11 cannot be integrated with the sealing layer to achieve sufficient strength, and
Excellent sealing effect.

<'K J3 traction "1-b °6 tJ3 and σ7 are used only for measurement of h1, and the movement of pigs IJjJ and 2 (Yo, so that it is done according to the relationship of gas pressure difference Px<Pz. to b
J: Of course it is.

41, if there is a branch 13 in the middle of the pipe, the above branch 9
3 (13, feed pressurized waste for 1 time, infiltrate here,
] - IF to prevent the outflow of the ink agent, sea urchin consideration J,
Of course.

As described in detail above, the present invention is directed to
1) Before starting the ink process, apply a penetrant to the pipe joint from the inside and apply the penetrant.
By penetrating into the inside and solidifying it, the density and strength of the seal shrine itself is increased, and as a result, during the inner surface repair performed later, the coating that flows out from around the Zunawara pig 3 is reduced. Once integration with the agent is achieved, cracks, damage, and leaks from the pipe joint are completely prevented with IJ-c)
At the same time, what's more, the starvation and joints? Since the coating treatment on the inner surface of the pipe is performed directly after the SLI repair, a significant effect is obtained in that the repair inside the pipe is highly efficient and the time required for application can be significantly shortened.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the present invention. l Vertical j0i side view, j
Ji Figure 2 is a longitudinal sectional side view showing the situation of =1-Brung perfect inverse tangent. . 1, 2, 3...Bik, 4, 5...[1-P, G
, 7... Traction "I-bu", 8... 1.1 height, 9...
Already joined, 10... Pipe joint part, 11... Seal (Δ
, 12...=+-7ring layer, 13... Branch chain...
Δ... Penetrating agent, 13... 21-1Ring agent.

Claims (1)

[Scope of Claims] Some 1''''''''Silk'J~' portions ti, /
, : ? The inside of f1 is 1- 'f inc I ru 1- method J5, and the circumferential surface is t, (the inner wall is in contact with the lightning and moves 3
Connect 3 bigs 11-pu (1 911 j & connect, apply penetrant between the two bigs of the front puno, 1.1.,,,I-'j between the two bigs of the tangent) rng iΔ, dere-
(Fill the pipe joint between the two front pipes.)
iiIlJru11'l, both d;,;i Perform the addition bar to the pig, ? - Add penetrant to the penetrating agent and infiltrate the pipe joint with the penetrating agent. At the same time, -L IIL pig's advancement process-(-The peripheral surface J of the rear end, the Ricoh 1-Tef ring was leaked [!, and the inside surface -1--F(Ring treatment was carried out at the same time. l, 14 if you want to achieve Umiko's internal supplementary method T
i people.