JPH0531470A - Intake channel cleaning device - Google Patents

Abstract

(57) [Summary] [Purpose] It is possible to clean the intake channel even during intake. [Structure] The scraper 4 is attached to the tips of the cleaning arms 3a and 3b which are provided with an opening force by a spring 6. The cleaning arms 3a and 3b are connected to the traveling guide device 9 to form front and rear cleaning units I and II. The tow lines 12 and 13 are connected before and after the cleaning units I and II. The front and rear cleaning units I and II are separated by 90
° Set in intake channel 1 with a shift. Tow line 1
The front and rear cleaning units I and II are moved integrally by using the Nos. 2 and 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intake channel cleaning device used for removing marine organisms attached to the wall surface of a cooling water intake channel of a power plant or for preventing marine organisms from adhering to the intake channel wall surface. It is a thing.

[0002]

2. Description of the Related Art At a power plant, water is continuously taken from one year to a year and a half for power generation work. During that time, no maintenance is performed on the intake channel, so shellfish (barnacles, crows, etc.) There is a problem that marine organisms such as seaweeds and seaweed adhere to the entire wall surface.
When it grows to a thickness of 0 mm, the adhesion force to the wall surface becomes weaker than the intake water flow rate, and eventually the tube inside the condenser of the power plant becomes clogged. Therefore, if this clogged state occurs frequently, it is necessary to perform the work of removing and cleaning the attached matter.

As a conventional method for cleaning the wall surface of the intake channel, after blocking the intake port to drain the water in the intake channel, a mini bulldozer is used to scratch the adhering substances on the wall surface (including the ceiling surface). In addition, if the mini bulldozer does not reach it, the worker should scrape it off with a long stick, etc. Has been.

[0004]

However, in the case of the above-mentioned conventional cleaning method, when the amount of marine organisms deposited reaches several thousand tons, the number of working days is long (20 to 30 days), and therefore the cost is low. Not only becomes bulky, but also causes a problem that the power generation stop period becomes long.

Therefore, recently, a rotary brush type traveling cleaning device driven by a hydraulic motor has been developed. In the case of this device, although the number of working days can be shortened as compared with the cleaning work by the mini bulldozer, You have to stop water intake.

Therefore, the present invention intends to provide an intake channel cleaning device which can be cleaned even after the water is once set in the intake channel and the number of cleaning days can be greatly shortened. To do.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is designed such that an opening force is urged by a spring and the tip end is made to correspond to the wall surfaces of the intake channel which are opposed to each other vertically or horizontally. A V-shaped cleaning arm equipped with a scraper is connected to a traveling guide device that can travel along the intake passage, and two cleaning units are provided in front and rear. The front and rear cleaning units are arranged so that their scrapers face each other. The arrangement is such that they are arranged so as to differ by 90 ° and are connected by a connecting member, and further, tow lines are connected to the front and rear portions of the front and rear cleaning units.

[0008]

When each cleaning unit is placed in the water intake passage, the scraper of one cleaning unit takes in water on the upper and lower walls of the water intake passage and the scraper of the other cleaning unit takes in water by the action of the opening force of the cleaning arm by the spring. It is pressed against the left and right walls of the road. Therefore, by moving both cleaning units by using the front and rear tow lines, the wall surface of the intake channel is cleaned by the scrapers. Even during water intake, marine organisms can be prevented from adhering by traveling and moving in the water intake canal several times a day, so continuous power generation is possible for a long period of time.

[0009]

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

FIG. 1 and FIG. 2 show an embodiment of the present invention. The ceiling surface 1a, the floor surface 1b, the side wall surface 1c, and the left and right wall surfaces and the corner surfaces 1d are formed into a substantially rectangular cross section. An example of the adoption in the intake channel 1 will be shown. The guide frame 7 having a rectangular frame structure is provided with a traveling guide device 9 provided with guide rollers 8 at four corners so as to be able to roll along the corner surface 1d of the water intake passage 1, and the guide frame in the traveling guide device 9 is provided. In the center of 7, the intake channel 1
The central portion of the shaft 2 arranged in a direction orthogonal to the longitudinal direction of the shaft 2 is swingably connected by a connecting tool 10, and two cleaning arms 3a and 3b are respectively attached to both ends of the shaft 2 about the shaft 2. The shaft 2 is rotatably supported so that it can be opened and closed in a V shape.
Of the pair of cleaning arms 3a and 3b at both ends of the cleaning arm 3a, between the tips of the cleaning arms 3a and between the tips of the cleaning arms 3b, corresponding to the wall surfaces of the intake channel 1 facing each other, The scrapers 4 are attached via scraper holders 5 which can swing freely, and the cleaning arms 3 are provided between the facing surfaces of the cleaning arms 3a and 3b.
Each of the scrapers 4 is provided with a water intake passage 1 through a spring 6 for urging an opening force centering on the shaft 2 on the a and 3b.
Before and after being pressed against the opposite wall surfaces of 2
The cleaning units I and II of the table are constructed.

The front and rear cleaning units I and II are arranged so as to face each other so that the scrapers 4 are displaced by 90 °, and the shafts 2 of the cleaning units I and II are connected to each other as a connecting cord 11.
And the cleaning unit I on the front side.
One end of the tow cable 12 at the front center of the
One end of the tow line 13 is connected to the center of the rear part of the II, and the tow lines 12 and 13 are used to clean the front and rear cleaning units I and
Allow II to be moved.

The scrapers 4 of the cleaning units I and II are arranged so as to overlap each corner surface 1d so that the wall surface of the water intake passage 1 is not left uncleaned.

When cleaning the water intake passage 1, first, as shown in FIG. 3, the front and rear cleaning units I and II are carried into the water intake passage 1. At this time, as a method of loading the cleaning units I and II, the cleaning units I and II can be loaded from the water intake port 19 with the screen 20 removed from the water intake channel 19, or can be loaded into the inspection port 14 to have a size.
May be disassembled and carried in through the inspection port 14 to be assembled. Next, the tow cable 12 on the front side is provided with the guide sheave 15 and the bank 16 provided at the lower end of the inspection port 14.
While connecting to the winch 18 via the upper guide sheave 17, the rear tow line 13 is connected to the winch 23 via the guide sheave 21 attached to the screen 20 of the water intake 19 and the guide sheave 22 on the bank 16. Connecting. At this time, since the scrapers 4 of the front and rear cleaning units I and II are arranged and connected so that their directions are deviated from each other by 90 °, the scraper 4 of the front cleaning unit I is, for example, the ceiling surface 1a of the intake passage 1. And the scraper 4 of the rear cleaning unit II is made to correspond to the left and right side wall surfaces 1c. At this time, the cleaning arms 3a and 3b holding the scrapers 4 are biased by the opening force by the springs 6, so that the scrapers 4 are pressed so as to be brought into close contact with the respective wall surfaces. Become.
In such a state, for example, the winch 18 is driven to be wound to wind up the tow line 12 on the front side, and at the same time,
Drive the winch 23 at the same speed to drive the tow line 1 on the rear side.
As the cleaning units I and II are moved forward and backward, the cleaning units I and II are integrally moved in one direction along the longitudinal direction of the water intake passage 1 while the traveling guide devices 9 guide the traveling.

As described above, the cleaning units I and II are taken in the water channel 1.
When moved inside, the scrapers 4 are strongly pressed against the upper, lower, left, and right wall surfaces by the opening force of the cleaning arms 3a, 3b by the spring 6, so marine organisms attached to the wall surfaces can be scraped off. At this time, even if the cross-sectional dimension of the intake channel 1 changes slightly or there is some unevenness,
Since the contact state of the scraper 4 with the wall surface is elastically maintained by the opening and closing action of the cleaning arms 3a and 3b, the cleaning operation can be stably performed. Further, in the front and rear cleaning units I and II, since all of the tow lines 12 and 13 and the connecting line 11 are connected to the central portion and pulled at the central position, for example, as shown in FIG. Even if there is a curved portion, a stable running state can be obtained, and it is possible to cope with speed changes inside and outside the curved portion without any problem.

In the above description, the scraper 4 is supported by the cleaning arms 3a and 3b which project from the shaft 2,
Further, since the guide frame 7 of the traveling guide device 9 has a frame structure and the cleaning units I and II are moved by utilizing the tow lines 12 and 13, the intake channel 1
Once loaded and set in, the cleaning work can be performed thereafter without stopping water intake (without stopping power generation). However, in this case, the opening force of the spring 6 does not have to be strong enough to scrape off the attached marine life, and may be a force enough to wipe the cleaning wall surface. Therefore, it is possible to greatly reduce the amount of marine organisms deposited by regularly running (several times a day) during water intake and performing cleaning work, and to significantly reduce the time required for cleaning deposits during periodic inspections. In addition to being able to shorten the time, it is possible to greatly extend the interval between stopping water intake and requiring complete drainage cleaning.

Next, FIG. 5 shows an application example of the present invention, which is used as a device for scraping off adhering substances from the water intake passage 1 in a drained state. That is, with the gate 24 blocking the water intake 19 of the water intake passage 1 and draining water, the cleaning units I and II are separated and the tow lines 12 and 13 are connected to the mini bulldozer (or mini backhoe) 25, respectively. Cleaning unit I (or II) is used for scraping off the side wall surface 1c, and the other cleaning unit II is used.
(Or I) is used for scraping off the ceiling surface 1a and the floor surface 1b by pulling with the mini bulldozer 25.

When used as shown in FIG. 5, the spring 6 is slightly strengthened so that the pressing force of the scraper 4 is selected to be sufficiently strong. It becomes possible to perform work.

The present invention is not limited to the above-mentioned embodiment, and a pipe, a rod or the like may be used as a connecting member for connecting the front and rear cleaning units, and other deviates from the gist of the present invention. It goes without saying that various changes can be made within the range not covered.

[0019]

As described above, according to the water intake passage cleaning device of the present invention, the opening force is urged by the spring, and the tip end of the V is equipped with the scraper corresponding to the opposing wall surface of the water intake passage. A front and rear cleaning unit in which a character-shaped cleaning arm is connected to the traveling guide device is provided, and the front and rear cleaning units are arranged so that the directions of the scrapers are 90 °.
Since they are arranged so as to be different from each other and connected by the connecting member, and further the tow lines are connected to the front and rear portions of the front and rear cleaning units, the following excellent effects are exhibited. Since the front and rear cleaning units can be moved integrally in one direction using the tow line to clean the wall surface of the intake channel, once set in the intake channel, cleaning work can be performed even during intake. Since it is possible to prevent the adherent growth of marine organisms, it is not necessary to stop the power generation for a long period of time, and the operating rate can be improved. It is possible to run the intake channel regularly during the intake, and it is possible to reduce the amount of marine organisms adhering to the intake channel, which requires complete drainage cleaning by stopping the intake. You can significantly extend the time until. Since the structure is simple and there is no need to install a power source (hydraulic pressure, pneumatic pressure, electric power, etc.) underwater, there are no obstacles such as electric wires and hoses, and there are few failures and maintenance is easy. Since installation work such as running rails is not required on the intake channel side, it can be easily applied to existing intake channels. Even if there is a bend in the intake channel, it can follow, and stable cleaning work can be performed. It can also be used by separating the front and rear cleaning units and pulling them individually to a mini bulldozer, etc., and it has a wide range of applicability.

[Brief description of drawings]

FIG. 1 shows an embodiment of a water intake passage cleaning device of the present invention, in which (a) is a side view and (b) is a plan view.

2 is a partial view of the device of the present invention, (a) is a view taken along the line AA of FIG. 1, (b) is a view taken along the line BB of FIG. 1, FIG.
(C) is a CC arrow view of FIG.

FIG. 3 is a schematic view showing a state in which an intake channel is being cleaned using the apparatus of the present invention.

FIG. 4 is a plan view showing a work situation in a bending portion.

FIG. 5 is an application diagram showing a state in which the device of the present invention is separated and used.

[Explanation of symbols]

 I, II Cleaning unit 1 Intake channel 1a Ceiling surface (wall surface) 1b Floor surface (wall surface) 1c Side wall surface (wall surface) 3a, 3b Cleaning arm 4 Scraper 6 Spring 9 Travel guide device 11 Connecting cable (connecting material) 12, 13 Traction Search

Claims (1)

Claim: What is claimed is: 1. A V-shaped cleaning arm in which an opening force is biased by a spring and a scraper is attached to a tip end of the scraper so as to correspond to upper and lower or left and right opposite wall surfaces of the water intake passage. Is equipped with two front and rear cleaning units that are connected to a travel guide device that can travel along the intake channel, and the front and rear cleaning units are arranged such that the directions of the scrapers differ from each other by 90 ° And a traction line connected to the front and rear portions of the front and rear cleaning units.