JPS5859808A - Regeneration of existing pipe - Google Patents

Abstract

PURPOSE:To regenerate an existing pipe efficiently and securely, by a method wherein a flexible regenerating pipe is inserted into an existing pipe, thereafter a flange body is bonded to a projected tip of the regenerating pipe, and the flange body is clamped between flanges of existing pipes. CONSTITUTION:The flexible regenerating pipe 9 is inserted into the existing pipe 1 separated to a unit operating length, from one end of the pipe 1, and is projected to the exterior through an opening at the other end. Then, the flange body 12 is bonded to the projected tip of the regenerating pipe 9. A flanged joint pipe 4 fitted over the existing pipe 1 and a flanged joint pipe 8 fitted over a connecting pipe 5' connected to a separated another existing pipe are brought close to each other, the flange body 12 is tightly clamped between the flanges 10, 11 of the joint pipes 4, 8, and the joint pipes 4, 8 are fixed to the existing pipe 1 and the connecting pipe 5', respectively. Accordingly, the existing pipe can be regenerated efficiently and securely.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for rehabilitating a pipe by inserting a bowl-like historic pipe such as a polyethylene pipe into an aged R-crop pipe.
It is an object of the present invention to provide a means for efficiently and reliably performing a liquid-tight or gL-tight joining process of the end portion of a rehabilitated pipe and seven flange.

Conventionally, for example, as disclosed in Japanese Patent Publication No. 56-G5O'YS, and as shown in FIG. Insert the flange pipe at the end of the rehabilitated pipe into this pipe, set the thresholds facing each other, and insert the flange pipe at the end of the rehabilitated pipe into the long existing pipe. 2) and tg
By working through the dark gap between the J-cut pipe @1 and the existing pipe, both pipes were connected.
There was a way to connect to ite. This had the disadvantage of requiring cumbersome work to cut short lengths of RR pipe.
In addition, as disclosed in the same bulletin and also shown in Figure 8, a rehabilitation 1teat longer than the Muni 1a construction pipe Gυ was used, and after it was pushed in, rehabilitation was carried out on the outside of the existing pipe with false snow.
7 lunge pipe xi-s on J, then apply an axial compression can on the whole rehabilitated pipe, 7 lunge, -t
There was also a way to confront them. This is difficult to compress, and there is a risk that the rehabilitated pipe may break due to compression, or residual distortion may occur, resulting in defects. It is.

The existing pipe rehabilitation method according to the present invention is as follows: [I] ■ A combustible rehabilitation pipe is inserted into an existing pipe that has been separated into unit working lengths from one end of the pipe, and the tip of this rehabilitation pipe is connected to the other end of the existing pipe that is opened. After inserting the rehabilitation pipe until it protrudes further outside, ■ a step of joining a flange body to the protruding tip of the rehabilitated pipe;
Another existing pipe that has been IAed or a connecting pipe connected to this other existing pipe is brought close to the jacket and nine flanged joint pipes, and the seven kunji bodies are sandwiched between them. , ■ A step of fixing each joint pipe to the existing pipe 2 and another existing pipe or connecting pipe. The second period of time is not the same as this process (see Example 1). According to the present invention, there are the following advantages: ] is performed outside the end of the existing pipe, so the work is just a thread and there is no need to cut the pipe.

(b) When performing liquid-tight or air-tight joining of the 7-kunji body, rather than compressing the rehabilitated pipe, the two jointed pipes with the fukunji are moved closer together, and the ropes are clamped with bolts, etc. Therefore, the joining process is reliable and has excellent workability. (c) It is preferable for the original rehabilitation function because there is no need to put pressure on the rehabilitated pipe due to compression. Below, the implementation of the present invention is uniform. 0 ■ Stop the flow of existing pipes in the construction section.

■ Excavate the ground corresponding to the entrance and exit of the rehabilitation pipe. However, in the case of underground 11 pipe installation.

The length between the entrance and exit is the unit working length.

■ Separate the existing pipes by installing two pipes at the inlet and outlet.

This is often caused by cutting 1 - 〇 ■ As shown in Figure 2 and 1 on the exit side, the existing pipe (1) of the unit working length is connected to the push ring (!11 backing ill, joint pipe with a hook (4) I is a sheet jacket.

■ As shown in Figure 2, insert the rehabilitation pipe (9) into the existing pipe (1) and position the tip of the rehabilitation pipe (9) outside of the 7 langes A of the joint pipe (4). -Move.

■ As shown in Figure @3, the protruding tip of the rehabilitation pipe (9) [7 is joined to the Kunji body att1 (see 16). Next, the connecting pipe [
5], then put the press ring (6), backing (1), and joint pipe (6) with 7 lunges (11) together with the connecting pipe (5), and bring them close to the four sides of the 79-nge body at the same time. , or bring the joint pipe +43 closer to each other in succession.・114d sheet packing 〇CI) As shown in 114, 7 kunji, (7 in lO
Kunji body art (7 Kunji it) [11
Insert the bolt and nut alt and tighten.

■ Backing (3), push ring (11 also moved, T-bolt/Nara) Tighten at Ql. Even if there are 2 on the other side, Oshiwa (@) t? Bind with bolts and nuts 9'2).

(2) The operations (2) and (2) described above are performed at the inlet 11i1, and the cement milk tank is injected from the inlet (corresponding to 4 in Fig. 4) of the joint pipe on the inlet side. In addition, prior to this injection, apply the fluid TYC and QL internal ratio in the rehabilitation pipe (9), and inject it at the stage when 200 cement milk I comes out from the outlet a of the joint pipe (4). Stop.

Next, a supplementary explanation of the above knee will be provided. 2, (a) ■ (1st
The work in Figure) may be performed in parallel with the insertion of rehabilitation t(-).

The tip of the rehabilitation pipe 111) is the end (6) of the existing pipe (1)
The father may perform the work in ■ while being located in the vicinity.〇 (B) Joint pipe 14+, (If 81 is 20%, 80%, etc., perform the work in ■ (Fig. After the welding work is completed, we will connect it later (
C) 7-lung body < 1@ may be only for the flange O (d) Instead of cement milling, it is also possible to inject Fretan foam or other heat-insulating fluid liquid (cured ff1).

In addition, the connecting pipe (5) is separate as shown in Figure 2! Membrane tube (5)
It is connected to the factory via a joint.

俤η, 關 is the backing, and the -gu is the push ring. That is, the press ring-,
Insert the packing, the fitting, the packing, and the push ring into the existing pipe (ll).

The push ring is a dot (on the right side of Q), and the push ring (6), backing (7) 2 and connecting pipe (5
) to set the a setting power (51) in the same state as B. Then move the push ring -, the whole of w4ea in the diagram tiit 0
In addition, after bathing in (Fig. 88), the connecting pipe (8) and the connecting pipe (5) are moved to the left. @S
The figure corresponds to figure 114.

On the other hand, when the connecting pipe (5) is not used, as shown in Figure 6, a joint pipe (81) similar to the left side joint pipe (4) is used, and Slide the post-joint pipe (a), backing (7), and push ring (・) against the existing pipe (+S) 0 The existing pipe (6) must remain stationary Fi
Needless to mention.

Note that D':)X is a constraint condition.ノ) is Raku, i
More than one aircraft is required. Figure 5 shows the joint pipe (11tS
If the item is set before arrival, the same 5) will be stipulated.

[Brief explanation of the drawing]

Figures 1 to 984 are cross-sectional views showing the implementation of the existing pipe rehabilitation method according to the present invention according to the -ne1m construction, @b
The figure is a cross-sectional view for supplementary explanation, Figure @6 is a cross-sectional view of the main cost part of Bessatsu School, and Figures 7 and 8 are cross-sectional views of the conventional method. il+...Existing pipe, (Phantom...7 jointed pipe with flange, (6)...Another existing pipe, (Is)
・°“・・・Communication pipe, (8)・Pa...joint pipe with 7 flanges, (9)...Functionable rehabilitation pipe, -...
・7 lunges, (11)...7 lunges, am...
...7'y body. Figure 3

Claims (1)

[Claims] The $v flexible rehabilitation pipe (9) is inserted into the existing 'it IIJ separated into unit working lengths from its one end opening.
After inserting it until the tip of 9) protrudes outward from the narrow end opening of the existing 'It fil, this retread f+91
a step of joining the flange body TNT to the protruding tip of the
Joint pipe (4) with 7 flanges attached to the existing pipe (1)
and another separated existing pipe (6) or this other existing pipe
Connect to the flit and bring the 9 connecting pipes (61 to the 7-lunged joint w (8)) close to each other, and connect those 7 langes.
(11) After tightening and clamping the seven flange bodies 4 between them, the valley joint t +41 , 18) is fixed to the existing pipe (1) and another existing pipe (6) or connecting pipe (5). arR'# rehabilitation method having a process.