JPS60183079A - How to clean deposits on waterway walls - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] This invention provides marine organisms such as shellfish that adhere to the walls of waterways,
The present invention relates to a method for cleaning wall surface deposits of a waterway, in which limescale, sphagnum moss, etc. are removed by spraying pressure water.

Waterways, for example, waterways for cooling seawater intake at thermal power plants, etc.
Shellfish such as barnacles, oysters, and mussels tend to adhere to the walls, and if they are left attached to the walls and left unattended, the thickness of the adhesion will increase over a long period of time, reducing the effective cross-sectional area of the waterway. If left in such a state, thermal power plants would have a lower cooling seawater intake efficiency, which would also affect the thermal efficiency of the power plant as a whole. Conventionally, this was done manually. - In other words, once a year at the appropriate water temperature, a diver is placed in the waterway and the diver manually removes the wall surface deposits such as Fujibo. The cleaning method used was scraping.

In addition, since the length of the waterway is long and the cross-sectional area of the waterway is relatively large, the number of work days required increases, and labor costs increase in proportion to the number of work days, which causes the overall cleaning cost to rise. was causing it.

This invention has been made by focusing on the above-mentioned conventional problems, and is a method for cleaning wall surface deposits of a waterway, which does not require obtaining materials and can remove wall surface deposits by automatic operation from outside the waterway. This is a book that aims to provide.

Specifically, an arm body that is extendably and rotatably attached to the main body of a working machine that can run on its own in a waterway is made to follow the shape of the wall surface of the waterway using a copying device installed at the tip of the arm body. The purpose of the present invention is to provide a method for cleaning wall surface deposits of a waterway in which the wall surface deposits are peeled off by spraying pressurized water onto one surface of the water channel from a surface raper attached to the tip of an arm body while expanding and contracting and rotating the arm body. .

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

In addition, in the above and following explanations, waterways are not only waterways for cooling seawater intake at thermal power plants, etc., but also relatively large-scale waterways such as industrial pools, landing tanks, and rainwater adjustment tanks for sewers. It shall include a large pool and tanks.

1 to 3 are diagrams showing one embodiment of the present invention. 1 in the figure is a waterway, and inside this waterway 1 there are walls 2
A working machine main body 4 for cleaning work of wall surface deposits 3 such as shellfish adhering to the walls is shown.

The work equipment main body 4 is introduced into the waterway 1 through a manhole (not shown), etc., and the control box 5 is connected to the waterway through a hose 17 containing a hydraulic hose, an electric wire, a pressure water hose, etc. 1. Drive hydraulic unit and water pressure pump (not shown).

Connected to battery, etc.

The work machine main body 4 can be self-propelled by rotating a rubber crawler (hereinafter referred to as a rubber crawler) 6 using hydraulic pressure. During self-propulsion, two guide rollers 9 at the tips of guide arms 8 telescopically attached to two masts 7.7 are brought into contact with the wall surface 2 of the waterway 1. By expanding and contracting the guide arm 8, the position of the working machine main body 4 is maintained on the center line of the water channel 1, regardless of changes in the shape of the wall surface 2. In addition, auxiliary wheels 16 are attached to support legs 15 that can move up and down on both sides of the rubber crawler 6 to provide support when the work machine main body 4 reaches a place where the wall surface 2 is not flat while traveling, or when the cross section of the waterway 1 If the shape is not rectangular, etc., the auxiliary wheels 16 are moved according to the shapes of the wall surface 2 and the bottom surface 2a to prevent falling.

A motor box 10 is installed on the mast 7.7 of the working machine main body 4, and rotatably holds an arm body 11. The distal end of the arm body 11 is extendable and retractable by a telescopic cylinder 12, and when the copying device 13 attached to the distal end copies the wall surface 2, the telescopic cylinder 12 is expanded and contracted to form a disc body constituting the copying device 13. 13a maintains constant contact with the wall surface 2.

At the tip of the arm body 11, together with the copying device 13, a scraper 14 having a plurality of nozzles N is provided, and high pressure water is sprayed from each nozzle N onto the wall surface 2 at a predetermined angle. The pressure water injection direction of each nozzle N is determined by the copying device 13
A substantially constant angle is maintained with respect to the wall surface 2 by the guide wheel body 13b K constituting the guide wheel body 13bK.

When cleaning, the work machine main body 4 is stopped and the arm body 11 is operated via the control box 5.
is rotated, and during this rotation, high-pressure water is injected from the nozzle N of the scraper 14 as described above. Then, the wall surface deposits 3 are sequentially peeled off from the wall surface 2 as the arm body 11 rotates. Then, when the arm body 11 rotates once, the wall surface deposit 3 is peeled off from the wall surface 2 by a predetermined width, so to speak, in a circular shape.

The arm body 11 is rotated once and then stopped, and the working machine body 4 is advanced by an amount corresponding to the width of the wall surface deposit 3 that has been peeled off as described above. Next, the arm body 11 is started again and pressure water is injected from the nozzle N to perform the cleaning work.

The cleaning work is completed by performing the above operations one after another and appropriately discharging the wall surface deposits 3 accumulated on the bottom surface 2a of the waterway 1 to the outside of the waterway 1. Of course, the wall surface deposits 3 deposited on the bottom surface 2a
If it can be discharged by running water in the waterway, drainage work is not necessary.

Although the illustrated example describes the cleaning applied to a sealed waterway 1, the cleaning is substantially the same as above for a groove-like waterway.
The arm body 11 may be alternately rotated left and right. Furthermore, an example has been described in which self-propelling of the work machine main body 4 and rotation of the arm body 11 are performed alternately, but in other embodiments, the work machine main body 4 is continuously moved and the arm body 11 is also continuously rotated. Alternatively, an example is given in which pressure is applied so as to peel off the wall surface deposits 3 in a spiral manner by rotating the wall surface.

The method for cleaning the wall surface deposits of a waterway according to the present invention includes: a work machine that is extendably and rotatably attached to a work machine body that can be self-propelled in a waterway;
A scraper is installed at the tip of an arm that expands, contracts, and rotates according to the shape of the wall surface using a copying device, and pressurized water is sprayed from the scraper onto the wall surface of the waterway to peel off the wall surface deposits, making it easier for divers to use it than conventional divers. Compared to other manual cleaning methods, the cleaning time can be significantly shortened and the associated cleaning costs can be significantly reduced.Furthermore, it can be automatically controlled from outside the waterway, making cleaning work safer. This has the great effect of saving labor.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a working machine body used in an embodiment of the present invention placed in a waterway, Fig. 2 is a front view seen from the direction of the arrow ■ in Fig. 1, and Fig. 3 is a , is a side view seen from the direction of arrow ■ in FIG. 1; 1...Waterway 2...Wall surface 3...Wall surface deposits 4...Work machine body 11...Arm body 13...Copying device 14...Screno (Applicant: Sanko Co., Ltd. No. II' !1 @Figure 3) I♂□□□ Figure 2

Claims (1)

[Claims] An arm body that is extendably and rotatably attached to the main body of a working machine capable of self-propelled in a waterway is extended, contracted and rotated by a copying device provided at the tip of the arm body to follow the shape of the wall surface of the waterway. , a method for cleaning wall surface deposits of a waterway, in which pressure water is jetted onto the wall surface of the waterway from a scraper attached to the tip of an arm body to peel off wall surface deposits.