JPS6229112Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a device that scrapes, collects, and removes impurities that adhere to or accumulate on the inner wall of long and large diameter pipes, such as drainage pipes in power plants.

In thermal or nuclear power plants, a method is adopted in which seawater is used as cooling water and is discharged into the sea through large-diameter drainage pipes. By the way, because this drainage pipe extends for a long time along the seabed, there are many shellfish such as barnacles attached to the inside of the pipe.
Furthermore, other impurities accumulate, which increases water flow resistance and causes problems in operation. Therefore, the conventional method was to stop the power generation function and then have submersible workers infiltrate the pipe and manually remove shellfish and drain the sediment, but the working environment inside the pipe was extremely poor. Moreover, the work not only pollutes the seawater, but also forces long-term and inefficient work, which has a significant impact on power generation capacity.

This invention was made for the purpose of providing a device that solves the above problems. In other words, this device is equipped with a variable-angle caterpillar that changes its posture according to the shape of the target pipe, and a main body that has the function of lifting and lowering while being guided by a pillar installed in the center of the upper part. One side of the boom is equipped with a cutter that can advance and retreat, swing and rotate, and the other side is equipped with a rotating brush. Furthermore, the cutter is equipped with a scraped material transfer hose and suction processing equipment, which can be remotely controlled. The device is characterized by being equipped with an underwater monitoring light, a television camera, a traction device for pulling back the device, etc., and an embodiment thereof will be described below based on the drawings.

FIG. 1 shows a state in which deposits B in a water discharge pipe A are scraped and collected by a device 1 of this invention. It has a so-called self-propelling function that moves at a desired speed by driving, but in consideration of the worst case, a wire rope 5 wound around the winch 4 on the ground is connected to the wire rope 5. The device can be pulled back by winding it up. By the way, as shown in FIG. 4, the caterpillar 3 has a variable angle function that allows the angle to be changed according to the shape of the tube A, thereby ensuring reliable contact with the tube wall. In other words, Caterpillar 3
An arbitrary inclination angle is given by the rotational movement of the lever 7 by the operation of the hydraulic cylinder 6. Reference numeral 8 denotes a column erected at the center of the body 2, and is guided and held by this column 8, and is equipped with a main body 9 having a lifting and lowering function. A boom 10 is rotatably supported at the front end of the main body 9, and this boom receives the rotation of a hydraulic motor 11 housed in the main body 9 via a gear 12, and rotates at a predetermined speed. It is. Furthermore, on one front side of the boom 10, a cutter 14 for removing deposits is connected directly to a hydraulic motor 13, and on the other side, a brush 16 for cleaning the inner surface of the tube is also connected directly to a hydraulic motor 15.
Moreover, the cutter 14 is supported by a hydraulic cylinder 17 so as to be swingable, and by a hydraulic cylinder 18 to be able to move forward and backward via a support base 19 that swings. In other words, the main body 19 moves up and down, the cutter 14 and the brush 16 move together with the boom 10, and each rotates on its own axis.The cutter 14 moves forward and backward and swings. This function allows it to follow the shape and dimensions of the pipe.

Furthermore, inside the main body 9 there is a hydraulic unit 20 and a power receiving board 2.
1. Equipment such as a control panel 22 is housed, and power and control cables 23 are wired. Reference numeral 24 is a transfer hose that runs from the base pipe of the cutter 14 to the suction processing equipment 25 on land, and the material scraped off by the cutter 14 is sucked through this by a pump built into the processing equipment 25. . The above-mentioned processing equipment may be equipped with a vibrating screen, a settling tank, and adding a settling aid, for example. Moreover, since this device is used inside a so-called culvert and is operated by remote control, the monitoring function as the eyes of the device, that is, the underwater television camera 26 and light 27 are installed at the top of the support. are doing.

As described above, according to this invention, since the aircraft is supported by an angle-variable caterpillar, it can reliably take a running posture according to the shape of the tube, and the main body can be raised and lowered, and the front end of this main body can rotate. Since the boom is equipped with a rotating cutter and a rotating brush that can move forward and backward and swing, it is possible to adjust the position according to the size and shape of the pipe and perform appropriate scraping and cleaning. In addition, the material scraped by the cutter is sucked into processing equipment on the ground via a transfer hose,
Not only does it prevent seawater pollution, but it also does not reduce the underwater monitoring function, and it is possible to safely and efficiently remove deposits inside the pipe.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a side view showing the working state, FIG. 2 is a side view of the main part of the device, FIG. 3 is a plan view, and FIG. 4 is a front view. 2 is the fuselage, 3 is the caterpillar, 4 is the winch, 5
is a wire rope, 6, 17, 18 are hydraulic cylinders, 11, 13, 15 are hydraulic motors, 8 is a column,
9 is the main body, 10 is the boom, 14 is the cutter, 16
24 is a brush, 24 is a transfer hose, 25 is a suction treatment equipment, 26 is a television camera, and 27 is a light.

Claims (1)

[Scope of utility model registration request] The main body has the function of raising and lowering while being guided and held by a variable-angle caterpillar that supports the fuselage and a support installed on the fuselage.One side of the boom, which is rotatably driven at the front end of the main body, has the functions of advancing and retracting, swinging, and rotating. The cutter is equipped with a rotary brush on the other side, a transfer hose for the material scraped by the cutter, a suction treatment equipment, a light and a television camera to enable underwater monitoring, and a traction device for pulling back the equipment. A device for removing deposits inside pipes.