JP3450954B2 - Plug device for lining members - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided at both ends of a lining member made of a thermosetting resin-impregnated tube inserted into a pipe such as a sewer pipe, while maintaining the pressure inside the lining member at a predetermined value. The present invention relates to a plug device for a lining member, in which high-temperature steam is supplied into the lining member from one end of the lining member and air in the lining member is discharged from the other end.

[0002]

2. Description of the Related Art Conventionally, as a method for repairing sewer pipes whose inner peripheral surface has deteriorated due to corrosion or the like, after inserting a lining member made of a thermosetting resin-impregnated tube into a pipe such as a sewer pipe, A method of forming a lining layer of FRP by hardening a lining member by supplying high temperature steam is widely adopted.

Specifically, as shown in FIG. 4, in this construction method, first, a high pressure is applied to the inner peripheral surface of the deteriorated sewer pipe 1 (the sewer pipe 1 between adjacent manholes 5 and 5) to be repaired. By using the cleaning device 6 including the water supply mechanism 61 and the high-pressure water injection mechanism 62, by injecting high-pressure water onto the inner peripheral surface of the sewer pipe while moving the high-pressure water injection mechanism 62 in the longitudinal direction of the sewer pipe. To wash. (FIG. 4A) A slip sheet roll 21 is installed on the ground near one manhole 5 and a winch 22 is installed on the ground near the other manhole 5, and the winch 22 is used to remove the slip sheet 2 from the slip sheet roll 21. An auxiliary material for inserting and slipping the slip sheet 2 (the lining member 3 made of a thermosetting resin-impregnated tube described later into the sewer pipe 1 without damaging it by unwinding and towing. After the insertion of the lining member 3 is completed, the slip sheet 2 is removed if necessary) is laid (inserted). (Fig. 4
(B)) A roll 31 of a lining member made of a thermosetting resin-impregnated tube on the ground near one of the manholes 5.
The winch 32 is installed on the ground near the other manhole 5, and the lining member 3 is unwound from the roll 31 of the lining member by using the winch 32, and is pulled, so that the winch 32 is placed on the slip sheet 2 in the sewer pipe 1. Laying (inserting) the lining member 3. (FIG. 4C) The lining member 3 inserted into the sewer pipe 1 is cut at the manholes 5 and 5, and the plug devices 4 and 4 are attached to both ends of the lining member 3.
Is attached, air is supplied to the lining member 3, the lining member 3 is expanded, and the lining member 3 is brought into close contact with the inner peripheral surface of the sewer pipe 1. (FIG. 4D) Lining member 3
While maintaining the internal pressure at a predetermined value, the heating device 7, specifically, the high-temperature steam supply mechanism 71 and the control mechanism 72 on the ground in the vicinity of one manhole 5 and the manhole 5 in the vicinity of the other manhole 5. An exhaust mechanism 75 is installed on the ground to supply high-temperature steam from the high-temperature steam supply mechanism 71 to the lining member 3 via the control mechanism 72, the conduit 73 and the plug device 4 on one side, and the other plug on the other side. By heating the lining member 3 by discharging the air in the lining member 3 from the exhaust mechanism 75 via the device 4 and the conduit 74,
It is cured and a lining layer of FRP is formed. (Fig. 4
(E)) The plug devices 4 and 4 at both ends of the lining member 3 are removed, the end surface of the lining layer (lining member 3) is cut and finished, and the repair of the sewer pipe is completed. (Fig. 4
(F))

[0004]

By the way, in this construction method, water obtained by condensing the high temperature steam supplied into the lining member (referred to as "drain" in the present specification).
However, there is a problem in that the lining member accumulates on the inner bottom surface of the lining member, so that the portion of the lining member where the drain is accumulated is insufficiently heated, resulting in poor curing of the lining member. In order to deal with this, it is conceivable to make a drain discharge hole at the end of the lining member, but when a drain discharge hole is opened, the high temperature steam supplied into the lining member leaks from this hole. There was a problem. In addition, the above problem is especially noticeable when there is a dent in the middle of the pipe, such as a sewer pipe whose inner peripheral surface has deteriorated due to corrosion, etc. It was difficult to discharge the drain accumulated on the inner bottom surface of the lining member in the hollow portion of the pipe even if the hole was formed.

According to the present invention, the drain can be completely discharged by a simple mechanism, and the FRP formed on the inner peripheral surface of the pipe.
An object of the present invention is to provide a plug device for a lining member, which can remarkably improve the quality of the lining layer.

[0006]

In order to achieve the above object, a plug device for a lining member according to the present invention is arranged at both ends of a lining member made of a thermosetting resin-impregnated tube inserted into a pipe, In a plug device for a lining member, in which high temperature steam is supplied from one end into the lining member and air in the lining member is discharged from the other end, the plug device is formed into a tubular body having an end face plate at the end. Along with this, the end plate is provided with a vent for supplying high-temperature steam or discharging air, and a drain discharge port for discharging drain, and a drain discharge pipe is connected to the drain discharge pipe of the drain discharge pipe. Place it so that the tip contacts the inner bottom surface of the lining member.
Temperature sensor and pressure for measuring temperature and pressure
It is characterized in that a sensor mounting portion is formed .

In this case, the drain discharge pipe is fixed to the drain discharge port such that the tip of the drain discharge pipe contacts the inner bottom surface of the lining member at a predetermined position in the longitudinal direction, or the tip of the drain discharge pipe is The drain discharge port may be slidably provided so as to be in contact with the inner bottom surface at an arbitrary position in the longitudinal direction of the lining member, or the above two types of drain discharge pipes may be provided together.

Thus, the drain accumulated in the inner bottom surface of the lining member is forcibly discharged from the drain discharge pipe provided at the drain discharge port of the plug device, whereby the lining member can be heated uniformly. .

In particular, the drain discharge pipe is slidably provided at the drain discharge port, and the tip of the drain discharge pipe is moved in the longitudinal direction of the lining member while being in contact with the inner bottom surface of the lining member. The drain accumulated on the inner bottom surface of the lining member in the depressed portion can be forcibly discharged.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a plug device for a lining member according to the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, the plug device 4 is arranged at both ends of a lining member 3 made of a thermosetting resin-impregnated tube inserted into a pipe 1 such as a sewer pipe, and one plug is provided. The device 4 is connected to a high-temperature steam supply mechanism (not shown) installed on the ground near the manhole 5 via a conduit 73, and supplies high-temperature steam into the lining member 3 from one end of the lining member 3. The other plug device 4 is connected to an exhaust mechanism (not shown) installed on the ground in the vicinity of the manhole 5 through a pipe line 74 to discharge the air in the lining member 3 from the other end of the lining member 3. And is formed into a tubular body 42 having an end face plate 41 at its end.

The end plate 41 is provided with a vent hole 44 for supplying high temperature steam or discharging air, a plurality of drain discharge ports 45a, 45b for discharging drain, and a temperature inside the lining member 3. And mounting parts 46a and 46b of the temperature sensor and the pressure sensor for measuring the pressure. The vent 44 is connected to the pipe 73 connected to the high-temperature steam supply mechanism or the pipe 74 connected to the exhaust mechanism via the elbow 76. Further, in this embodiment, as the drain discharge port, one drain discharge port 45a is provided at the lower part of the end plate 41, and two drain discharge ports 45a are provided at symmetrical positions slightly above the middle. However, the position and the number of the drain outlets can be arbitrarily increased or decreased.

The cylindrical body 42 has a circular outer peripheral surface,
The ridge 43b that locks the end of the lining member 3 is formed in cooperation with the fastener 43a.

As shown in FIG.
As shown in (a), the drain discharge pipe 8a is fixedly provided so that the tip of the drain discharge pipe 8a contacts the inner bottom surface of the lining member 3 at a predetermined position in the longitudinal direction. At least the tip portion of the fixed drain discharge pipe 8a is configured by a soft synthetic resin pipe body 82, and the weight of the pipe body 82 and the weight 83 provided at the tip thereof act to remove the drain discharge pipe 8a. The tip is in contact with the inner bottom surface of the lining member 3. In the present embodiment, the tube body 8 in which the base end of the tube body 82 is screwed into the drain discharge port 45a via the socket 84.
The drain is forcibly discharged from the pipe 88 through the pipe 86 screwed to the drain discharge port 45a. However, the structure of the pipe is not limited to this. is not.

Further, as shown in FIG. 3 (b), the drain discharge pipe 8b is provided at the upper drain discharge port 45b so that the tip of the drain discharge pipe 8b is located at the inner bottom surface of the lining member 3 at an arbitrary position in the longitudinal direction. It is provided slidably so that it touches. The tip portion of the movable drain discharge pipe 8b is configured by a soft synthetic resin pipe body 82, and the weight of the pipe body 82 and the weight 83 provided at the tip thereof act to cause the drain discharge pipe 8b to have a tip end. Is in contact with the inner bottom surface of the lining member 3. On the other hand, the base end of the pipe body 82 is connected to a semi-rigid synthetic resin pipe body 85b slidably inserted into the drain discharge port 45b through a socket 84, and further connected to the pipe body 85b. The drain is forcibly discharged from the pipe line 88. In this embodiment, a semi-rigid synthetic resin tubular body 85b is slidably supported by a support pipe 87a screwed into the drain discharge port 45b, and a seal member is provided between the support pipe 87a and the cap nut 87b. 87c is provided to configure the sliding mechanism 87 for the drain discharge pipe 8b, but the configuration of the sliding mechanism for the drain discharge pipe is not limited to this.

In this embodiment, the drain discharge pipes 8a and 8b are wholly or partially formed of a soft pipe body 82, and the weight of the pipe body 82 or the drain discharge pipes 8a and 8b may be adjusted as necessary. By the action of the weight 83 provided at the tip, the tips of the drain discharge pipes 8a, 8b are in contact with the inner bottom surface of the lining member 3, but the configuration of the drain discharge pipe is not limited to this, and for example, the drain discharge pipe It is also possible to form the hard tube with its tip in contact with the inner bottom surface of the lining member. In addition, a plurality of drain outlets 45
drain discharge pipes 8a and 8a to all of a and 45b, respectively.
It is not necessary to dispose b, and a fixed drain discharge pipe 8a or a movable drain discharge pipe 8b is selectively disposed according to the inclination of the pipe 1 and the lining member 3 and the state of the inner peripheral surface. In addition, the drain discharge pipe 8a,
The number of 8b can also be arbitrarily increased or decreased. in this case,
Drain discharge port 45 without the drain discharge pipes 8a and 8b
The a and 45b are closed by plugs (not shown) so that the high temperature steam supplied into the lining member 3 does not leak out.

Next, a method of using the above plug device and its operation will be described. The lining member 3 inserted into the sewer pipe 1 is cut at the positions of the manholes 5 and 5, the plug devices 4 and 4 are attached to both ends of the lining member 3, and air is supplied to the lining member 3 to remove the lining member 3. The lining member 3 is expanded and brought into close contact with the inner peripheral surface of the sewer pipe 1. While maintaining the pressure inside the lining member 3 at a predetermined value, a high-temperature steam supply mechanism (not shown) is provided on the ground near one manhole 5, and an exhaust mechanism (not shown) is provided on the ground near the other manhole 5. ) Is installed to supply high-temperature steam into the lining member 3 through the conduit 73 and one plug device 4 from the high-temperature steam supply mechanism, and through the other plug device 4 and conduit 74. By exhausting the air in the lining member 3 from the exhaust mechanism, the lining member 3 is heated and cured to form a lining layer of FRP. In addition to this, the drain discharge pipe 8 disposed in the drain discharge ports 45a and 45b of the plug device 4
By forcibly discharging the drain accumulated on the inner bottom surface of the lining member 3 from a and 8b through the pipe line 88,
The lining member 3 can be heated uniformly. At this time, the drain discharge port 45b of the plug device 4
The drain discharge pipe 8b slidably provided in the pipe 1 is moved in the longitudinal direction of the lining member 3 while the tip of the drain discharge pipe 8b is in contact with the inner bottom surface of the lining member 3 so that a recessed portion in the middle of the pipe 1 is formed. The drain accumulated on the inner bottom surface of the lining member 3 is forcibly discharged.

[0018]

According to the present invention, the drain accumulated on the inner bottom surface of the lining member can be forcibly discharged from the drain discharge pipe provided at the drain discharge port of the plug device by a simple mechanism. In particular, temperature sensor and pressure sensor
By forming the mounting part of the
Temperature and pressure can be measured. Further, the drain discharge pipe is slidably provided at the drain discharge port, and the tip of the drain discharge pipe is moved in the longitudinal direction of the lining member while being in contact with the inner bottom surface of the lining member. The drain accumulated on the inner bottom surface of the lining member can be discharged. Thereby, the lining member can be uniformly heated, and the quality of the lining layer of the FRP formed on the inner peripheral surface of the tube can be significantly improved.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an installed state of a plug device for a lining member of the present invention.

FIG. 2 shows a plug device for a lining member according to the present invention,
(A) is a side view and (b) is a front sectional view.

FIG. 3 is an explanatory view of a drain discharge pipe of the plug device for the lining member of the present invention.

FIG. 4 is an explanatory view of steps of a conventional pipe lining method.

[Explanation of symbols]

1 tube 3 lining members 4 plug device 41 End plate 42 tubular 44 Vent 45a drain outlet 45b drain outlet 5 manholes 8a drain discharge pipe 8b drain discharge pipe

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-62-152728 (JP, A) JP-A-4-271885 (JP, A) JP-A-4-296531 (JP, A) JP-A-5- 200869 (JP, A) JP-A-7-195521 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B29C 63/00-63/48 F16L 55/16

Claims (4)

(57) [Claims] 1. A lining member consisting of a thermosetting resin-impregnated tube inserted through the pipe is provided at both ends, and high temperature steam is supplied into the lining member from one end of the lining member and air inside the lining member is supplied from the other end. In a plug device for a lining member configured to discharge a plug device, the plug device is formed into a tubular body having an end face plate at an end, and
The end plate is provided with a vent for supplying high-temperature steam or discharging air, and a drain outlet for discharging drain, and the drain outlet is connected to the drain outlet by a tip of the drain outlet. To be placed in contact with the inner bottom surface of the lining member to measure the temperature and pressure inside the lining member.
A plug device for a lining member, characterized in that mounting parts for the temperature sensor and the pressure sensor are formed . 2. The drain discharge pipe is fixed to the drain discharge port so that the tip of the drain discharge pipe is in contact with the inner bottom surface at a predetermined position in the longitudinal direction of the lining member. Plug device for lining members. 3. The drain discharge pipe is slidably provided in the drain discharge port so that the tip of the drain discharge pipe contacts the inner bottom surface of the lining member at an arbitrary position in the longitudinal direction. Lining member plug device. 4. A drain discharge pipe fixed to the drain discharge port so that the tip is in contact with the inner bottom surface at a predetermined position in the longitudinal direction of the lining member, and the tip is an inner bottom surface at an arbitrary position in the longitudinal direction of the lining member. The plug device for the lining member according to claim 1, further comprising a drain discharge pipe provided slidably provided in the drain discharge port so as to be in contact with the plug.