JPH0323236B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a device for preventing biofouling on the inner surface of a water intake pipe.

[Prior art and its problems]

Conventionally, for example, the following measures have been taken to prevent sea creatures such as mussels from adhering to the inner surface of water intake pipes of thermal power plants installed on the coast.

Increase the flow rate of seawater in the intake pipe.

Inject chlorine or hypochlorite into the water intake pipe.

Apply antifouling paint to the inner surface of the water intake pipe.

Polyethylene lining is applied to the inner surface of the water intake pipe.

However, with method (2), the flow rate of seawater taken in fluctuates depending on fluctuations in the load on the boiler, so it is not possible to maintain the flow rate at a constant rate that can prevent marine organisms from attaching. and the method of is economically disadvantageous.

Therefore, it is desired to develop an economical device for preventing biological attachment to the inner surface of the water intake tube, which does not have a negative impact on the environment, can reliably prevent the attachment of organisms to the inner surface of the water intake tube. , such a device has not yet been proposed.

[Purpose of the invention]

Therefore, an object of the present invention is to provide an economical device for preventing the attachment of organisms to the inner surface of a water intake tube, which can reliably prevent the attachment of organisms to the inner surface of the water intake tube without adversely affecting the environment. It's about doing.

[Summary of the invention]

The present invention includes a traveling truck having a plurality of wheels that can roll on the inner surface of a water intake tube in the axial direction of the water intake tube, and a vehicle that is rotated by water flowing inside the water intake tube, which is attached to the traveling truck. , at least 2
a propeller consisting of two blades; a brush attached to the tip of each blade of the propeller for scrubbing the inner surface of the water intake pipe; and a brush attached to the traveling truck, which transfers the rotational force of the propeller to The present invention is characterized in that it comprises a rotational force transmission means for transmitting rotational force to at least one of the plurality of wheels.

[Structure of the invention]

Next, a device for preventing biofouling on the inner surface of a water intake pipe, which is an embodiment of the present invention, will be described with reference to the drawings.

FIG. 1 is a side view of a device for preventing biofouling on the inner surface of a water intake pipe according to one embodiment of the present invention, and FIG. 2 is a front view of the same embodiment.

As shown in FIGS. 1 and 2, the traveling trolley 1 includes a horizontal rotating shaft 2 to which a propeller (described later) is fixed, and a horizontal rotating shaft 2 fixed to one end of the horizontal rotating shaft 2 via a bearing 3.
A first leg 5 consisting of book arms 4A and 4B;
A first wheel 7 that rolls on the inner surface of the water intake pipe 6 is attached to the tip of each of the arms 4A and 4B of the leg 5.
A, 7B, and a second leg 10 consisting of two arms 9A, 9B fixed to the other end of the horizontal rotating shaft 2 via a bearing 8, and at the tips of each of the arms 9A, 9B of the second leg 10. It consists of second wheels 11A and 11B that roll on the inner surface of the water intake pipe 6 attached thereto. The number of arms of the first leg 5 may be three or more. The same applies to the arm of the second leg 10. One first wheel 7A of the first leg 5 is attached to the tip of one arm 7A of the first leg 5 via a pressing means 12 made of a spring or the like. The second wheel 11A of one of the second legs 10 also has the pressing means 1
It is attached to the tip of one arm 9A of the second leg 10 via a pressing means 12 similar to that shown in FIG.

The propeller 13 consists of at least two blades each having a brush 14 attached to the tip, and the length of each blade is shorter than 1/2 of the inner diameter of the water intake tube 2. A horizontal rotation shaft 2 is fixed to the rotation center of the propeller 13.

The rotational force transmitting means 15 includes a worm 16 fixed to the tip of the horizontal rotating shaft 2 and a worm gear 17 attached to the bearing 8 and meshing with the worm 16.
, the rotation axis of the worm gear 17 and the second leg 10
The other second arm attached to the other arm 9B of
It consists of a pair of sprockets 18 fixed to the rotating shaft of the wheel 11B, and a chain 19 stretched endlessly between the pair of sprockets 18. When the horizontal rotating shaft 2 rotates together with the propeller 13, the worm 16 and the worm gear 17 rotate. When the worm gear 17 rotates, the rotational force of the horizontal rotating shaft 2 is transmitted to the second wheel 11B via a pair of sprockets 18 and a chain 19. As a result, the traveling trolley 1 travels within the water intake pipe 6.

In one embodiment of the device for preventing biological attachment to the inner surface of the water intake tube of the present invention configured as described above, biological attachment to the inner surface of the water intake tube is prevented in the following manner.

When the propeller 13 is rotated by the water flowing in the water intake tube 6 in the direction of the dotted arrow in FIG. 1, the horizontal rotation shaft 2 rotates together with the propeller 13. The rotational force of the horizontal rotation shaft 2 is transferred to the second rotational force by the rotational force transmission means 15.
The signal is transmitted to the other second wheel 11B of the leg 10. As a result, the traveling cart 1 runs inside the water intake pipe 6 in the direction of the solid line arrow in FIG. 1 against the flow of water within the water intake pipe 6. At this time, the first wheels 7A, 7B and the second wheels 11A, 11B are pushed into the water intake pipe 6 by the pressing means 12 without leaving the inner surface of the water intake pipe 6.
rolling on the inner surface of the

The inner surface of the water intake pipe 6 is rubbed by the brush 14 attached to the propeller 13, so the inner surface of the water intake pipe 6 is rubbed by the brush 14 attached to the propeller 13.
Living things such as shellfish do not adhere to the inner surface of the container.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to reliably prevent the adhesion of living organisms to the inner surface of the water intake tube without having any adverse effect on the environment, and it is also extremely useful as it is economical since no external energy is required. effect is brought about.

[Brief explanation of drawings]

FIG. 1 is a side view of a device for preventing biofouling on the inner surface of a water intake pipe according to one embodiment of the present invention, and FIG. 2 is a front view of the same embodiment. In the drawings, 1... Traveling trolley, 2... Horizontal rotating shaft, 3... Bearing, 4A, 4B... Arm, 5... First leg, 6...
...Water intake pipe, 7A, 7B...First wheel, 8...Bearing, 9A, 9B...Arm, 10...Second leg, 1
1A, 11B...second wheel, 12...pressing means,
13... propeller, 14... brush, 15... rotational force transmission means, 16... worm, 17... worm gear, 18... sprocket, 19... chain.

Claims (1)

[Claims] 1. A traveling truck having a plurality of wheels that can roll on the inner surface of the water intake tube in the axial direction of the water intake tube, and at least 2 wheels attached to the traveling truck that are rotated by the water flowing inside the water intake tube. a propeller consisting of two blades; a brush attached to the tip of each blade of the propeller for scrubbing the inner surface of the water intake tube; and a rotational force transmitting means for transmitting rotational force to at least one of the plurality of wheels,
Device to prevent biofouling on the inner surface of the water intake pipe.