JPH08141468A - Liquid flow sending device in existing pipe lining method - Google Patents

Abstract

PURPOSE: To provide a device for feeding liquid stream in an existing pipe lining method capable of being transportated in one set state. CONSTITUTION: This device is provided with a liquid tank 32 for strong liquid resin which is used as a pipe injection.transportation means, a liquid feed pump 40 for pressurizing a liquid and being force-fitted into a pipe line and a liquid feed control device 42 for controlling a feeding liquid from the liquid feed pump 40. The liquid tank 32, liquid feed pump 40 and liquid feed control device 42 are mounted on a movable truck and are constituted into one set on a truck frame and is movable in one set state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is intended for repairing a supply pipe branched from a conduit, and in a first step, the amount of liquid resin required for lining the inside of the supply pipe is adjusted to the ground above the end of the supply pipe. The whole amount of the resin plug is transferred to the branch position on the conduit side by the liquid flow introduced into the pipe from the opening portion and press-fitted from the rear, and in the second step, the suction pump connected to the above-mentioned opening portion of the inside of the pipe In the lining method of repairing so that the liquid flow is sucked and discharged, and the resin plug is pulled back to the end side of the supply pipe by the suction force to apply resin to the inner surface of the pipe to form a lining, during the first step , The liquid resin introduced into the pipe,
The present invention relates to a liquid feeding device for introducing a liquid flow into a pipe when the liquid flow is transferred to a predetermined position.

[0002]

2. Description of the Related Art As a lining construction method as described above, the present applicant has proposed a repair construction method as described in Japanese Patent Application Laid-Open No. 4-1147773.

In the above repair method, when the supply pipe branched from the conduit laid under the road toward the demand destination is targeted, a meter provided at the end side of the supply pipe is used as a repair method by non-excavation. The liquid that is removed and used as the above-ground opening, and the necessary amount of liquid resin required for lining the inside of the supply pipe is introduced into the inside of the pipe in the form of a plug from the above-mentioned ground opening and is press-fitted into the rear pipe thereof. Flow the whole amount of the resin plug to the branch position on the conduit side, and in the second step, the liquid flow is sucked and discharged by the suction pump connected to the opening on the ground, and the suction force pulls the resin back to the end side of the supply pipe. Repair work is performed by applying resin to the inner surface of the pipe by the flow of the plug to form the required lining film.

[0004]

In carrying out this repairing method, in the first step, as a means for introducing the liquid flow introduced into the pipe through the above-ground opening of the supply pipe, a liquid tank, a liquid feed pump, A liquid delivery controller for controlling the liquid flow delivered from this pump is required.

In the previously proposed prior art, the liquid tank, the liquid feed pump, and the liquid feed control device are separately constructed and installed separately, and the hose is connected in series to each other. Sometimes the number of required equipment increases,
Not only there is the inconvenience that it takes a lot of time and a large space for installation at the construction site, but also the transportation to the construction site becomes complicated, and in particular, the road that leads to the residential land within the residential area of the customer is narrow. Therefore, there were problems such as inconvenience in loading and unloading the equipment.

An object of the present invention is to solve the above-mentioned inconvenience, and an object of the present invention is to provide a liquid flow liquid sending device which can be easily carried in and out of a construction site and can greatly improve workability. It is what

[0007]

In order to achieve the above object, the present invention aims to repair a supply pipe branched from a conduit, and to provide a necessary amount of liquid resin necessary for lining the inside of the supply pipe. In the first step, the entire amount of the resin plug is transferred to the branch position on the conduit side by the liquid flow that is introduced into the tube in the form of a plug from the above-ground opening at the end of the supply pipe, and is press-fitted from the rear of the tube. The liquid flow in the pipe is sucked and discharged by the suction pump connected to the opening, and the suction force pulls the resin plug back to the end side of the supply pipe to apply the resin to the pipe inner surface to form the lining. In the lining repair construction method, a liquid tank connected in series to the ground opening, a liquid feed pump, as a means for introducing a liquid flow introduced from the ground opening of the supply pipe in the first step, A liquid feed control device for controlling liquid feed from the pump, and these liquid tank, liquid feed pump, and liquid feed control device are integrally mounted and set in a carriage with moving wheels in a required connection arrangement. It is characterized by

According to the present invention, the liquid delivery control device has a hydraulic governor, and the liquid is returned to the liquid tank when the liquid flow pressure from the liquid delivery pump exceeds a predetermined value. That is another feature.

[0009]

According to the present invention configured as described above, the first
Since the means for introducing the liquid flow required during the process is configured as a set on a single mobile trolley, it is easy to carry the single trolley at the construction site (inside the customer's residential land). It is extremely easy and the workability can be greatly improved.

[0010]

Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 is a side view of a liquid flow liquid sending device according to the present invention, FIG. 2 is a front view of the device, and FIG. 3 is an explanatory view showing a liquid flow system of the liquid sending device shown in FIGS. 1 and 2. .
In FIG. 1 and FIG. 2, reference numeral 30 indicates a liquid flow liquid sending device according to the present invention. As shown in the drawing, a liquid flow liquid sending device 30 includes a liquid tank 32 for storing a liquid used as a resin in-pipe injecting / transferring means, and a liquid sending pump 40 for pressurizing the liquid and sending the liquid under pressure. The liquid feed control device 42 for controlling the liquid feed from the pump is integrally set on the carriage.

More specifically, the liquid tank 32 is fixed to the bogie frame 31 at the rear portion of the bogie. The liquid delivery control device 42 is installed in front of the liquid tank 32, and the liquid delivery pump 40 is installed under the liquid delivery control device. A control display unit 33 is provided on the bogie frame 31.

The liquid tank 32 is a vertical rectangular parallelepiped having the same width as that of the truck, and a liquid level gauge 34 communicating with the inside of the tank is provided on the outer wall portion thereof. A pair of ground wheels 36 are mounted on both left and right sides of the liquid tank 32, and when the carriage is moved, it can be moved by inclining the whole carriage backward. Further, a handle 41 is fixed to the bogie frame 31 so as to extend upward and rearward of the liquid tank 32, and the bogie frame 31 can be pushed and pulled by grasping it with a hand when the bogie is moved.

As shown in FIGS. 1 and 2, the hose 43 extends from the wall portion of the liquid tank 32, and the liquid feed pump 40
Is connected to the suction port 40a. A hose 45 extends upward from the discharge port 40b of the liquid feed pump 40 and is connected to the liquid feed control device 42.

In FIG. 3, reference numeral 42 indicates a liquid delivery control device. As shown in FIG. 3, the liquid delivery control device 42 is
A fluid pressure governor 42a that keeps the liquid delivered from the liquid delivery pump 40 at a constant fluid pressure, a flow meter 42b that measures the liquid flow rate and outputs the flow rate as a pulse signal, and a pulse signal from the flow meter is counted. The counter 42c generates a stop signal for stopping the pump when the preset liquid amount is reached, and the solenoid valve 42d for shutting off the liquid flow by the stop signal from the counter.

As described above, the liquid tank 32 constituting the liquid flow liquid feeding device, the liquid feeding pump 40, and the liquid feeding control device 42 are placed on a movable carriage and integrally set on the carriage. However, it can be carried as a set.

Next, the use of the liquid delivery device in the present invention will be described. As shown in FIG. 3, by operating the liquid feed pump 40, the liquid in the liquid tank 32 is sucked into the liquid feed pump 40 via the liquid suction pipe 38 and the hose 43. The liquid from the discharge port 40b of the liquid feed pump 40 is sent to the liquid feed control device 42 via the hose 45. The liquid that has passed through the liquid delivery control device is press-fitted into the pipeline side.
On the other hand, when the liquid fed from the liquid feed pump 40 exceeds a predetermined liquid pressure, the liquid pressure governor 42 is automatically opened to return a part of the liquid to the liquid tank 32 via the hose 44. There is. In this way, after the liquid flow pipe filling work is completed, the excess liquid in the liquid tank 32 is drained 5
It is discharged from 4.

Next, FIG. 4 shows a state in which the liquid delivery device 30 of the present invention is installed in the pipe injection system passage (the first step), and FIG.
Shows the suction lining system path (the second step).

As shown in FIG. 4, in the first step, the leveling pig 3 for lining is introduced into the supply pipe 7, and the resin injection device 11 is used to obtain the liquid supply pump 40. Resin is hydraulically injected into the tube through the opening 14 on the ground. After that, the resin conveying pig 4, the liquid absorbing material 5, and the liquid blocking pig 6 are introduced into the pipe with the same liquid pressure using the pig cassette 8. Next, by continuously operating the liquid feed pump 40, the liquid B is sucked and pressurized from the liquid tank 32,
Since it is injected into the supply pipe 7 via the liquid flow control device 42, the resin A is transferred to the branch position 2 on the conduit 1 side.

As shown in FIG. 5, in the second step, a pig stop device 18, a liquid recovery tank 17, and a suction pump 16 are provided.
And are connected to the pipeline side in series. The liquid flow B in the pipe is sucked and discharged by the suction pump 16, and the liquid is applied to the inner surface of the pipe by the flow of the resin plug that is pulled back to the terminal side of the supply pipe by the suction force to form a lining.
The leveling pig 3 makes the thickness of the lining film applied to the inner surface of the tube uniform. Reference numeral 19 in the figure indicates a resin separating means provided in the liquid recovery tank 17. A small amount of resin mixed in the recovered liquid is separated by the resin separating means 19.

[0020]

According to the present invention, the liquid tank, the liquid feed pump, and the liquid feed control device are mounted on a movable carriage and are integrally set on the carriage so that they can be carried in the set state. Therefore, it is possible to easily carry these equipments required for the resin injection work to the construction site. In addition, even if the passage of the gas supply destination (gas consumer) is narrow,
Since it does not take much time to transport it to the necessary place, the workability of pipeline lining construction can be improved.

[Brief description of drawings]

FIG. 1 is a side view of a liquid flow liquid sending device according to the present invention.

FIG. 2 is a front view of the liquid delivery device shown in FIG.

FIG. 3 is an explanatory diagram showing a liquid flow system of a liquid delivery device according to the present invention.

FIG. 4 is an explanatory diagram showing an in-pipe injection system passage (first step) in which the liquid delivery device of the present invention is installed.

FIG. 5 is an explanatory diagram showing a suction lining system path (second step).

[Explanation of Codes] 31 Bogie Frame 32 Liquid Tank 36 Grounding Wheel 40 Liquid Delivery Pump 41 Handle 42 Liquid Delivery Control Device

Claims (2)

[Claims] 1. A repair target is a supply pipe branched from a conduit, and a necessary amount of liquid resin required for lining the inside of the supply pipe is plugged into the pipe from a ground opening at the end of the supply pipe in the first step. Is introduced and the entire amount of the resin plug is transferred to the branch position on the conduit side by the liquid flow that is press-fitted from the rear side, and in the second step, the liquid flow in the pipe is sucked and discharged by the suction pump connected to the above ground opening. In the lining repairing method for the inner surface of the pipe, in which the resin is applied to the inner surface of the pipe to form a lining by the flow of the resin plug that is pulled back to the distal end side of the supply pipe by the suction force, the above-mentioned opening of the supply pipe in the first step. A liquid tank connected in series to the opening on the ground, a liquid feed pump, and a liquid feed control device for controlling the liquid feed from the pump, as a means for introducing the liquid flow introduced from the above. And, these liquid tank, the liquid feed pump and a feed control device, at a predetermined connection sequence, feeding system for a liquid stream, characterized by comprising mounting set integrally with the carriage with moving wheels. 2. The liquid delivery control device has a hydraulic governor, and is configured to return the liquid to the liquid tank when the liquid flow pressure from the liquid delivery pump exceeds a predetermined numerical value. The liquid-flowing device for liquid flow according to claim 1.