JPH0557889B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is used, for example, when repairing the inner surface of a water pipe by attaching a lining hose to the inner surface of the water pipe where rust has formed. Regarding equipment.
In detail, it includes a sealed case having one end equipped with a connection part facing the pipe end of the pipe to be repaired, a hose supply device that supplies a lining hose to the sealed case, and a hose supply device that supplies compressed air to the sealed case. The present invention relates to a loading device for a lining hose for repairing the inner surface of a tube, which includes an air supply device.

[Conventional technology]

Conventionally, as this type of loading device for a lining hose for repairing the inner surface of a tube, those described in the following [1] and [2] are known.

[1] The lining hose insertion port into the sealed case is molded so that it faces the atmosphere (for example,
Special Publication No. 57-46731).

[2] The entire hose supply device for supplying the strip-shaped lining hose is housed inside the sealed case (for example, Japanese Patent Laid-Open No. 57-47085).

[Problem to be solved by the invention]

However, when using the conventional device described in the former [1], the air pressure inside the sealed case is higher than the outside pressure (atmospheric pressure), so the narrow gap between the periphery of the insertion port and the lining hose inserted through the insertion port is narrow. The air inside the sealed case is forcefully blown out into the outside air through the gap, and the sound of this blown air and the vibration noise caused by the lining hose vibrating due to the blown air have become a source of noise that degrades the working environment.

In addition, according to the conventional technique described in the latter [2], the whole is sealed, so although the above-mentioned problems are solved, it requires a large sealed room to surround the whole, which increases the size of the device. , which led to an increase in weight.

SUMMARY OF THE INVENTION An object of the present invention is to provide a loading device for a lining hose for repairing the inner surface of a tube, which is small in size and lightweight, and has low noise.

[Means to solve the problem]

The technical means of the present invention taken to achieve the above-mentioned object includes: a sealed case having a connection part at one end opposite to the pipe end of the pipe to be repaired; and a hose that supplies a lining hose to the sealed case. In the loading device for a lining hose for repairing the inner surface of a tube, which includes a supply device and an air supply device that supplies compressed air to the sealed case, the following [A] to
The configuration described in [d] is provided.

[B] The sealed case includes an air receiving space that receives air supplied from the air supply device;
a holding part that holds one end of the lining hose at a position closer to the connection part with respect to the pipe to be repaired than the air receiving space; and a holding part that holds one end of the lining hose at a position on the upper side in the hose supply direction on the opposite side of the holding part in the air receiving space; and a liquid reservoir that isolates the air receiving space from the outside and maintains it in an airtight state.

[B] The holding section expands one end of the lining hose sent out from the air receiving space side so that its front and back sides are the same as the inner diameter of the pipe to be repaired, and the lining The hose is configured to be fixedly attached to the sealed case in a state where the outer surface side of the hose before being expanded communicates with the air receiving space of the sealed case.

[C] The air receiving space, by the air pressure generated in the air receiving space, the lining hose whose one end is fixed to the holding part is inserted inside out while being turned inside out and along the inner surface of the pipe to be repaired. It is connected to the front air holding section side so that the

[D] The liquid reservoir section allows the lining hose supplied from the hose supply device side outside the sealed case to the air receiving space side to pass through in an immersed state, and also maintains atmospheric pressure and pressure against the stored liquid. The stored liquid is stored facing both the atmosphere and the air receiving space so that the internal pressures of the air receiving space act in opposite directions.

[Effect]

The effects of taking the above technical measures are as follows.

The lining hose is immersed in the liquid reservoir and moves toward the air receiving space, and the liquid is arranged so that the atmospheric pressure and the internal pressure of the air receiving space act in opposite directions on the stored liquid. Since the reservoir is provided, leakage of air from the air receiving space side is effectively suppressed by the liquid. Moreover, since the air that leaks out passes through the liquid, which has a much larger mass than air, the sound of the air ejected must be made much smaller than when it is ejected directly into the atmosphere. It is also effectively attenuated when passing through the liquid.

In addition, vibrations of the lining hose that moves in the liquid while being immersed are also suppressed.

Furthermore, since the air jet noise can be reduced by providing the liquid reservoir, the size of the liquid reservoir can be added, and there is no need for a large sealed space that surrounds the entire lining hose.

〔Effect of the invention〕

Therefore, the present invention can suppress the noise generated due to the air inside the sealed case being ejected into the atmosphere from the insertion portion of the lining hose, and can improve the working environment. Moreover, it has been possible to provide a loading device for a lining hose for repairing the inner surface of a pipe, which avoids increasing the size of the entire device, is small and lightweight, and is easy to carry in and out of the site.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

As shown in FIG. 1, a flexible lining hose 2 for repairing the inner surface of a pipe 1 to be repaired, which can be turned inside out, is moved from one end side of the pipe 1 to be repaired, such as an existing water pipe, using air pressure. This is a loading device for inserting the pipe 1 to be repaired so as to adhere it to the inner surface of the pipe 1 while turning it upside down. ing.

The sealed case 3 includes a connection case body 3B that faces one end of the repair target pipe 1 and includes a plug-in connection part 3a for connecting the repair target pipe 1, and this connection case body 3B. A cylindrical case body 3A is provided with an air intake port 3b for receiving air supplied from the air supply device 4 at a position adjacent to the upper side in the hose supply direction; It is composed of a hose receiving case body 3C. The case body 3A is provided with an air receiving space 10 that receives the air supplied from the air supply device 4, and the case body 3A and the connecting case body 3B, the holding part 7 holds one end of the lining hose 2, and further includes a holding part 7 that holds one end of the lining hose 2 in a state where it is held between the lining hose 3A and the connection case body 3B, and further includes a holding part 7 that holds one end of the lining hose 2, and further includes a holding part 7 that holds one end of the lining hose 2, and further includes a holding part 7 that holds one end of the lining hose 2 in the air receiving space 10. A liquid reservoir 8 is provided inside the hose receiving case body 3C at the upper side in the supply direction, which blocks the air receiving space 10 from the outside and maintains it in an airtight state.

The case body 3A has the air receiving space 10 therein, and a second air receiving space 10 at a position on the upper side of the holding part 7 in the hose supply direction.
As shown in FIGS. 3 and 3, a slit-shaped insertion opening 6 is formed for inserting the lining hole 2 into the sealed case 3 from one end in the longitudinal direction in the form of a radially squeezed band. A wall panel is provided. In addition, liquid leaks from the liquid reservoir 8 through the gap between the sealing material 9 provided in the insertion port 6 and the lining hose 2 at an intermediate portion between the holding portion 7 and the wall plate portion for forming the insertion port 6. A weir plate 3d forming a leakage liquid reservoir 10' for collecting water is attached, and a swing valve 11 is attached which swings open only toward the connection case body 3B using this weir plate 3d as a valve seat. There is.

The holding part 7 holds the case body 3A and the connecting case body 3B in a cylinder part 7A that holds one end of the lining hose 2 in an annular shape by fitting the one end of the lining hose 2 which has been expanded into an annular shape. A mounting flange 7B that is mounted between the connecting flanges F1 and F2 is provided in series, and the lining hose 2 fitted onto the cylindrical portion 7A is fixed to the cylindrical portion 7 in a state in which it is not removed.
It is configured by providing a band 7C to be fixed to A, and holds one end of the lining hose 2 sent out from the air receiving space 10 side so that the front and back sides of the lining hose 2 are turned over so that the inner diameter is approximately the same as the inner diameter of the pipe 1 to be repaired. and the outer surface side of the lining hose 2 before expanding is the air receiving space 10 of the sealed case 3.
It is configured to be fixedly attached to the sealed case 3 in a state where it communicates with the airtight case 3.

The hose receiving case body 3C is configured such that the insertion port 6 is immersed in water on the outside of the insertion port 6, and the water head pressure of the insertion port 6 is slightly lower than the air pressure inside the sealed case 3. A liquid reservoir 8 is formed to accommodate water in this condition, and a sealing material 9 is attached between the periphery of the insertion port 6 and the lining hose 2 inserted through the insertion port 6. This sealing material 9 is attached to the insertion opening 6 by a jig 9A attached to the periphery of the insertion opening 6 with bolts 9a.
It is attached and fixed to the periphery of the Moreover, among the wall plate portions in which the insertion port 6 of the hose receiving case body 3C is formed, an upper wall plate portion 3c that forms the upper edge of the insertion port 6 and to which the sealing material 9 is attached.
is swingable toward the case body 3A using its upper edge as a fulcrum.

In the air receiving space 10 with one end sealed with water, the lining hose 2 whose one end is fixed to the holding part 7 is turned inside out by the air pressure generated in the air receiving space 10. It is communicated with the holding part 7 side so that it is inserted while being reversed and along the inner surface of the pipe 1 to be repaired.

12 is a bypass passage with a valve 13 that returns the water in the leaked liquid reservoir 10' to the liquid reservoir 8 by the air pressure inside the sealed case 3; In order to make the head pressure of the insertion port 6 slightly lower than that of high air when necessary, it is a head pressure increasing case that extends above the liquid reservoir 8, and 15 is attached to the lining hose 2. 16 is a guide roller for the lining hose 2.

The hose supply device 5 includes a reel 5A that winds up and stores the lining hose 2 in the form of a band, and a motor 5B that rotates the reel 5A in the feeding direction.
That is, the adhesive material 7 is applied to the surface that will be in close contact with the inner surface of the pipe 1 to be repaired when it is inverted.

Next, a loading operation procedure using the loading device configured in the above embodiment will be explained.

[1] Connect the connecting case body 3B to one end of the pipe to be repaired 1, and also connect one end of the lining hose 2 fed out from the hose supply device 5 to the hose receiving case body 3C from the upper opening of the liquid reservoir 8. insert. In this case, since the upper wall plate portion 3c swings against the case body 3A, the lining hose 2 can be easily inserted into the insertion port 6.

[2] Attach the case body 3 to the hose receiving case body 3C.
A, the lining hose 2 is inserted into the case body 3A, and one end of the lining hose 2 is fixed to the holding part 7, and then the case body 3B for connection of the case body 3A is connected.
connection and attachment of the holding part 7.

[3] Fill the liquid reservoir 8 with water, supply air into the sealed case 3, and let out the lining hose 2 from the hose supply device 5 to insert the lining hose 2 into the pipe 1 to be repaired.

[4] Once the lining hose 2 of a predetermined length has been paid out, cut the lining hose 2,
When the cut end of the lining hose 2 passes through the swing valve 11, the swing valve 1
1, separate the hose receiving case 3C from the case body 3A, and connect the insertion operation in this state.

Note that the sealing material 9 may be provided in multiple stages in the insertion direction of the lining hose 2, as shown in FIG. 9B is a spacer that regulates the interval between the sealing materials 9.

[Brief explanation of drawings]

The drawings show an embodiment of the loading device for a lining hose for repairing the inner surface of a pipe according to the present invention, with FIG. 1 being a longitudinal side view showing the construction state, FIG. 2 being an enlarged longitudinal side view of the main parts, and FIG. FIG. 2 is a sectional view taken along the - line in FIG. 2; FIG. 4 is an enlarged longitudinal sectional side view of the main part showing another embodiment. 1... Pipe to be repaired, 2... Lining hose,
3... Airtight case, 3a... Connection section, 4... Air supply device, 5... Hose supply device, 6... Insertion port, 7... Holding section, 8... Liquid reservoir section, 9... Seal material , 10...Air receiving space.

Claims (1)

[Claims] 1. Connection portion 3a facing the end of the pipe to be repaired 1
The hose supply device 5 supplies the lining hose 2 to the sealed case 3, and the air supply device 4 supplies compressed air to the sealed case 3. , a loading device for a lining hose for repairing the inner surface of a tube, having the configurations described in [A] to [D] below. [B] The airtight case 3 is connected to the air supply device 4.
an air receiving space 10 that receives air supplied from the air receiving space 10, a holding portion 7 that holds one end of the lining hose 2 at a position closer to the connection portion 3a with respect to the pipe 1 to be repaired than the air receiving space 10, and the air receiving space. A liquid reservoir 8 is provided at a position on the upper side in the hose supply direction opposite to the holding portion 7 in the air receiving space 10 for blocking the air receiving space 10 from the outside and maintaining it in an airtight state. [B] The holding part 7 expands one end of the lining hose 2 sent out from the air receiving space 10 side so that its front and back sides are turned over so that the inner diameter of the lining hose 2 becomes approximately the same as the inner diameter of the pipe 1 to be repaired, Further, the lining hose 2 is configured to be fixedly attached to the sealed case 3 in a state where the outer surface side before being expanded communicates with the air receiving space 10 of the sealed case 3. [C] The air receiving space 10 causes the lining hose 2, whose one end is fixed to the holding part 7, to turn inside out and move the pipe 1 to be repaired by the air pressure generated in the air receiving space 10. It is communicated with the front air holding part 7 side so that it is inserted along the inner surface. [D] The liquid reservoir 8 is connected to the air receiving space 1 from the hose supply device 5 side outside the sealed case 3.
The lining hose 2 supplied to the 0 side is allowed to pass through in an immersed state, and the stored liquid is arranged so that the atmospheric pressure and the internal pressure of the air receiving space 10 act in opposite directions on the stored liquid. It is stored facing both the atmosphere and the air receiving space 10. 2 The sealed case 3 has a partition wall having an insertion port 6 for the lining hose 2 between the air receiving space 10 and the liquid reservoir 8, and has a partition wall between the periphery of the insertion port 6 and the insertion port 6. The loading device for a lining hose for repairing the inner surface of a pipe according to claim 1, further comprising a sealing material 9 between the lining hose 2 and the lining hose 2 through which the lining hose 2 is inserted. 3. The liquid reservoir 8 absorbs water in a state where the water head pressure at the insertion port 6 is slightly lower than the air pressure inside the sealed case 3.
3. A loading device for a lining hose for repairing the inner surface of a pipe according to item 1 or 2.