JPH11128863A - Method for cleaning inside of flowing water pipeline and apparatus therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To drastically shorten the number of working days, to complete cleaning work with a small number of workers and to make it possible to eject the peeled matter of shellfishes, etc., without splashing the septic smells thereof at the time of cleaning the inside of a flowing water pipeline. SOLUTION: A cleaning device A for peeling of a self-traveling type which supports jet nozzles 35 for injecting high-pressure water toward vertical and lateral directions is put into a pipeline D which is held filled with water. This device is made to travel by itself while the high-pressure water is injected from the respective jet nozzles 35 toward the inside surface of the pipeline, by which the deposits of the shellfishes, etc., sticking to the inside surface of the pipeline are peeled. A cleaning work device B for recovery which sucks the peeled matter deposited on the water bottom and is mounted on a container 46 having a cage shape of a loading section is made to travel behind the device described above, by which the peeled matter of the shellfishes, etc., is recovered.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of removing cooling substances such as shells and the like in a flowing water pipe for taking in and discharging cooling water from a power plant mainly using seawater as cooling water. The present invention relates to a cleaning method and a cleaning device.

[0002]

2. Description of the Related Art Conventionally, in addition to dried products, shells adhere to a flowing water pipe for flowing this kind of seawater, the resistance of flowing water increases, and it becomes impossible to obtain a required amount of flowing water. Therefore, it is necessary to periodically clean the pipeline.

[0003] Conventionally, this type of pipe cleaning is performed by draining water from the pipe and allowing an operator to enter the pipe together with cleaning tools and devices for peeling off shells, and in a dry space, mechanically and manually using shells and the like. The work of peeling off the adhered matter and carrying out the peeled matter is performed.

[0004]

In such a conventional method, it is necessary to drain the inside of the pipeline to form a dry working space. Usually, this type of pipeline extends up to 2,000 meters, so There is a problem that it takes a long time to perform the punching operation, and the operation stop time of a thermal power plant or the like becomes long.

[0005] Further, even in the dry space, human labor is required in a narrow and long pipeline, and the attached materials peeled off from the inner surface of the pipeline are raw seaweeds and raw shellfish. Since the decay proceeds immediately after peeling and gas is generated, there is a problem that the working environment is extremely poor.

[0006] Furthermore, since the exfoliated matter generated after cleaning is dead carcasses, it becomes garbage or raw general waste.
For the transportation and treatment, special treatment determined by the national and local governments is required, and self-treatment facilities are required. In addition, there is a problem that the odor is emitted and the surrounding environment is spoiled.

The present invention has been made in view of such a conventional problem,
The purpose of the present invention is to provide a method and a device for cleaning the inside of a flowing water pipe which can significantly reduce the number of working days, can be carried out by a small number of workers, and can be carried out without dispersing the rotten odor of the peeled material. Things.

[0008]

A feature of the method of the present invention for solving the above-mentioned conventional problems and achieving the intended object is to support a jet nozzle for jetting high-pressure water in up, down, left and right directions. The self-propelled peeling cleaning device is put into a pipeline filled with water, and the jet nozzle jets high-pressure water toward the inner surface of the pipeline while self-propelled in the pipeline. By doing so, the cleaning method in the flowing water pipeline, which is characterized by peeling off extraneous matter, such as shellfish, that adheres to the inner surface of the pipeline, and the rear of the cleaning device for peeling, the separated material deposited on the water bottom. The present invention is directed to a method of cleaning a running water pipe for suctioning by vacuum, running a recovery cleaning device mounted on a stacking unit, and recovering peeled materials such as shells peeled off by the peeling cleaning device.

It is preferable that the adhered substance is peeled off while flowing water in the pipeline at a low speed, and the separated substance is collected.

A feature of the apparatus of the present invention is that a self-propelled movable vehicle that travels underwater by traveling means, a bottom cleaning jet nozzle that injects high-pressure water downward into a lower front portion of the movable vehicle, A water pipe comprising a pair of side cleaning jet nozzles for injecting high-pressure water toward the left and right sides of the truck, and a ceiling cleaning jet nozzle for injecting high-pressure water upwards above the movable cart. A cleaning device for removing adhering matter in a road, a self-propelled moving vehicle that moves in water, and a vacuum device mounted on the moving vehicle and having a downwardly directed suction port for suctioning the separated material on the bottom of the pipeline at a front portion. When,
Cleaning work for collecting separated substances in a flowing water pipe, comprising: a cage-shaped separated substance storage container that is mounted on the movable carriage or a carriage pulled by the movable body and stores the separated substances sucked by the vacuum device. In the device.

Each jet nozzle is reciprocated along a linear guide, and the peeling device is provided with a low-speed moving means comprising a pair of crawlers on a movable trolley. It is preferable to provide a wheel that can be raised and lowered so as to be raised to a height at which the vehicle does not touch the ground.

[0012]

Embodiments of the present invention will now be described with reference to the drawings.

FIGS. 1 to 3 show a cleaning device for removing adhering matter in a flowing water pipe according to the present invention.

This cleaning work apparatus A is self-propelled in water in a water-filled pipeline, and is a mobile trolley using low-speed running means including a pair of crawlers 2 and 2 driven by a hydraulic motor. One. The movable trolley 1 is provided with four side guide rollers 3, 3,... For moving the trolley 1 in the center of the pipeline. Each of the side guide rollers 3 is rotatably supported by a distal end of a telescopic arm 4 via a roller support 3a. The telescopic arm 4 is fixed by inserting the lock pin 5 into the base end side square tube 4a so that the distal end side square tube 4b is freely inserted into and out of the base end side square tube 4a. It is supposed to be.

The telescopic arm 4 has its proximal end side cylindrical tube 4a fixed to the slide member 6 by a pair of longitudinal axes 7, 7, and by pulling out one longitudinal axis 7, the other longitudinal axis is changed. It is designed to be pivoted horizontally about the center.

Each of the slide members 6 is supported so as to be vertically slidable with respect to four pillars 8 at four corners of the frame 1a provided on the movable carriage 1, and is supported inside and parallel to the respective pillars 8. The screw shaft 9 is screwed through a female screw member 10. The screw shaft 9 is turned by the electric motor 11 to be moved up and down.

A bogie supporting roller 12 is rotatably supported via a horizontal axis at the lower end of the roller supporting bracket 3a at the end of each telescopic arm 4.
The moving carriage 1 is lifted to a height at which the crawler 2 floats by moving the sliding member 6 downward by lowering the slide member 6. This allows easy movement by hand pushing or towing.

The carriage 1 is provided with a peeling means for peeling off the deposits on the inner surface of the pipeline. The peeling means comprises a ceiling surface peeling means 20 for the ceiling surface of the pipeline, a floor surface peeling means 21 for the floor surface, and a pair of side wall surface peeling means 22 for the left and right side wall surfaces.

The ceiling peeling means 20 comprises a support frame 24 fixed to the upper ends of a pair of vertically movable slide columns 23, 23 which rise upward from both columns 8, 8 at the front of the frame 1a.
It is supported by. The slide columns 23 are moved up and down by an actuator 23a composed of a hydraulic cylinder.

The floor peeling means 21 is supported by a support frame 25 projecting from the front surface of the bottom of the movable trolley 1, and each side wall peeling means 22 is projected from the frame 1 a of the movable trolley 1 in the horizontal direction. The protruding frame 26 is supported by a support frame 28 which is supported via guide shafts 27 and 27 so as to be able to move in and out.
The support frame 28 is moved in and out by an actuator 29 composed of a hydraulic cylinder.

As shown in FIGS. 4 and 5, each of the peeling means 20, 21, and 22 has a pair of slide guides 30, 30 provided on respective support frames 24, 25, and 28, and a slider that moves within the pair of slide guides. 31, a screw shaft 33 rotated and driven by a motor 32 for moving the slider 31, a nozzle support 34 supported by the slider 31,
It comprises a plurality of jet nozzles 35 fixed to the nozzle support 34 via a stopper 35a so as to be adjustable in angle. Touch sensors 36 are provided at both ends of the nozzle support 34, and one of the touch sensors is provided on the inner surface of the conduit. , The motor 32 for rotating the screw shaft 33 is reversely rotated, and the slider 31 is continuously reciprocated.

A hose 37 is connected to each nozzle 35 to supply high-pressure water from a high-pressure water supply device on the ground. Note that the high-pressure water supply device may be mounted on the movable trolley 1.

The nozzle support 34 of the side wall separating means 22 is provided with a wheel 38 which rolls in contact with the side wall surface. The wheel 38 is pressed up and down by the actuator 26a against the side wall surface. It is designed to reciprocate.

Next, a method of cleaning the inner surface of the flowing water conduit using the peeling cleaning work device A knitted as described above will be described.

As shown in FIG. 6, the peeling device A is inserted into the pipe D to be cleaned. When inserting, the guide rollers 3, 3,...
Is folded over the crawlers 2 and 2 and the ceiling surface peeling means 20 is lowered together with the slide columns 23 so that the telescopic arm 26 is contracted and the side wall surface peeling means 22 and 22 are retracted.

After being inserted into the conduit D in this way, the side guide rollers 3, 3,.
While projecting the ceiling surface and both side wall separating means 20 and 22 to predetermined positions, respectively, and reciprocating each nozzle support 34, while jetting high-pressure water from each jet nozzle 35,
The mobile trolley 1 is advanced at a low speed of about 10 m / h, the inner surface of the pipeline is inspected with jet water, and attached matter of shellfish and algae is peeled off.

In this way, the cleaning operation device for collection B is made to follow the rear of the operation device for cleaning operation A for separation.

In the recovery cleaning device B for collection, a vacuum device 42 is mounted on a movable carriage 41 having a self-propelled traveling means comprising a crawler 40, and the vacuum device 42
The suction port 43 is moved forward and left through the arm 44 while horizontally moving the suction port 43 so as to suck up the separated material deposited on the floor surface together with water. At the rear of the moving trolley 41, a towing trolley 45 is provided.
Are connected to each other, and a cage-shaped separation container 46 is mounted on the loading platform or loading section.

Then, the exfoliated material sucked up by the vacuum device is housed by discharging into the container 46 together with water. Container 46 containing exfoliated material
Is pulled up by an opening of a standing pile or the like, and a new container 46 is mounted.

Each of the working devices A and B moving in this manner
The support lines C, such as a power supply to the power supply, a control cable, and a hose for supplying high-pressure water, are provided with floats 47 at regular intervals, and are drawn in such a manner as to float below the ceiling surface. This allows the line to be pulled in with less resistance.

At the time of this cleaning work, the water in the pipeline was
It is preferable to carry out the work while flowing in the traveling direction of the mobile trolley 1 at a low speed of about 0.5 m / sec, thereby assisting the advance of the subsequent float 47 for the support line C,
Fresh seawater will be supplied to the shellfish that has been peeled off and deposited on the floor, and it will be possible to maintain survival during the construction period.

[0032]

As described above, in the method for cleaning the inside of a flowing water pipe according to the present invention, the adhering matter on the inner face of the pipe is controlled by the jet nozzle while the working device is advanced into the pipe filled with water. It is possible to collect living organisms such as shellfish as they are alive, and the collected exfoliated material can be transported to a treatment plant etc. without being putrefactive. The work can be performed in a state where no bad smell is caused by the progress of decay.

Further, at the time of work, since the adhered matter is separated by jet water without draining the water in the pipeline, the work can be completed in a short time and by a small number of workers.

Further, in the recovery operation, the recovery operation device is followed, the separated material deposited on the floor surface is suctioned by the vacuum, and stored in the loading section. Recovery is facilitated, and the shellfish that has been peeled off is kept rot-free.

Further, by performing the work while flowing the water in the pipeline at a low speed in the cleaning progress direction, fresh water is always supplied to the shellfish in the unconstructed section, and the living state can be maintained.

Furthermore, since the peeling cleaning device of the present invention is provided with jet nozzles for up, down, left and right, it is possible to clean the entire inner surface of the pipeline by one advance, and it is also possible to clean the jet nozzle. By reciprocating, it will be scanned sequentially with stronger jet water,
Strongly adherent shellfish are also exfoliated.

Further, the cleaning device for peeling is provided with a crawler as a low-speed self-propelling means and wheels for lifting and supporting the crawler, so that it can be towed in case of failure. And the speed of movement to the work place is increased.

[Brief description of the drawings]

FIG. 1 is a side view of an example of a cleaning device for removing adhering matter in a flowing water pipe according to the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a plan view in which a part of the above is omitted.

FIG. 4 is an enlarged plan view of a peeling means portion of the apparatus.

FIG. 5 is an enlarged sectional view taken along line AA in FIG. 4;

FIG. 6 is a side view schematically showing the method of the present invention.

[Explanation of symbols]

 Reference Signs List A Cleaning work device for peeling B Cleaning work device for collection C Support line D Pipe line 1 Moving cart 1a Frame 2 Crawler 3 Side guide roller 3a Roller support bracket 4 Telescopic arm 4a Base square tube 4b Tip square tube 5 Lock Pin 6 Slide member 7 Vertical axis 8 Prop 9 Screw axis 10 Female screw member 11 Electric motor 12 Dolly support roller 20 Ceiling peeling means 21 Floor peeling means 22 Side wall peeling means 23 Slide pillar 23a Actuator 24 Support frame 25 Support frame 26 Arm 26 Projection frame 26a Actuator 27 Guide shaft 28 Support frame 29 Actuator 30 Slide guide 31 Slider 32 Motor 33 Screw shaft 34 Nozzle support 35 Jet nozzle 35a Stopper 36 Touch sensor 37 Hose 38 Wheel 40 Crawler 4 DESCRIPTION OF SYMBOLS 1 Moving trolley 42 Vacuum device 43 Suction port 44 Arm 45 Towing trolley 46 Separation object storage container 47 Floating

Claims (7)

[Claims] 1. A self-propelled cleaning device for peeling, in which a jet nozzle for injecting high-pressure water is supported in up, down, left and right directions, is inserted into a pipe filled with water, and the jet nozzle is The inside of a flowing water pipe is characterized in that the high-pressure water is sprayed toward the inside of the pipe while being self-propelled in the pipe, thereby detaching extraneous substances such as shells and the like adhering to the inside of the pipe. Method. 2. A shell which is separated by the peeling cleaning operation device, in which the peeling material deposited on the bottom of the water is sucked by a vacuum, the recovery cleaning device mounted on the loading section is run behind the peeling cleaning device. The method for cleaning the inside of a flowing water pipe according to claim 1, wherein the separated matter such as is collected. 3. The method for cleaning the inside of a flowing water pipe according to claim 1, wherein the adhered substance is separated while flowing water in the pipe at a low speed, and the separated material is collected. 4. A self-propelled moving vehicle that travels underwater by running means, a bottom cleaning jet nozzle that injects high-pressure water downward into a lower front part of the moving vehicle, and a left and right side of the moving vehicle. A jet nozzle for cleaning high-pressure water and a jet nozzle for cleaning the ceiling surface that jets high-pressure water upward at the upper part of the self-propelled vehicle. Cleaning work equipment. 5. The cleaning device for removing adhering matter in a flowing water pipe according to claim 4, wherein each jet nozzle is reciprocated along a linear guide. 6. The peeling work device includes a low-speed moving means comprising a pair of crawlers on a movable trolley, and wheels capable of raising and lowering the movable trolley to a height at which the crawlers are in a non-ground state. Or the cleaning operation device for removing adhering matter in a flowing water pipe according to 5. 7. A self-propelled movable truck that moves in water, a vacuum device mounted on the movable truck, and having a suction port for suctioning a separated material on the bottom of the pipeline downward at a front portion, and a vacuum device. Alternatively, a cleaning device for collecting exfoliated matter in a flowing water pipe, comprising: a cage-shaped exfoliated matter storage container that is mounted on a truck pulled by the same and houses the exfoliated matter sucked by the vacuum device.