JPH06182307A - Cleaning device for inside of pipe - Google Patents

Abstract

PURPOSE:To clean the interior of a pipe efficiently using an extremely simple and low cost equipment. CONSTITUTION:A propeller 11 which is rotated by a water stream guided by a guide nozzle 8 is provided on the body of a device, then an arm 15 equipped with a brush 14 at the tip is installed on the rotating shaft 11a of the propeller 11 in a freely closing manner, and floating wheels 9, 19 are mounted on the device body. The propeller 11 is rotated by the riding of the device body over a water stream, then the brush 14 comes in contact with the inner surface of a pipe A through the arm 15 to do the cleaning job, and cleaning the intrapipe is performed more efficiently in proportion to a move rapid flow, without requiring a drive mechanism for cleaning. Thus, cleaning the intrapipe efficiently is done with such extremely simple and low cost equipment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe cleaning apparatus for removing and cleaning marine organisms adhering to the inner surface of cooling seawater pipes of various power plants, for example.

[0002]

2. Description of the Related Art Since marine organisms adhere to the inner surfaces of cooling seawater pipes of various power plants, cleaning work is regularly performed to remove the marine organisms.

A conventional cleaning device for cleaning a cooling seawater pipe will be described with reference to FIG. FIG. 6 shows a schematic configuration of a conventional pipe cleaning device.

A movable carriage 31 carried into the inner surface of the pipe 30 is provided with a ceiling wheel 33 which is pressed against the inner wall of the pipe 30 by a cylinder 32. In addition, the mobile carriage 31
Is provided with a high-pressure jet water nozzle 35 which is rotated by a manipulator 34.

In the pipe cleaning apparatus shown in FIG. 6, a movable carriage 31 is carried into the inner surface of the pipe 30, and a cylinder 32 presses a ceiling wheel 33 against the inner wall of the pipe 30 to maintain the posture. In this state, the manipulator 34 is rotated to inject high-pressure jet water from the high-pressure jet water nozzle 35 onto the inner surface of the pipe 30 to clean the inner surface of the pipe 30.

[0006]

In the conventional pipe cleaning apparatus, a large number of actuators are required to drive and steer the movable carriage 31 and the manipulator 34, and the structure is complicated and large. For this reason, handling including control operations is difficult and the initial cost and running cost are high. In addition, there is a problem that stability is lost under high flow velocity.

[0007]

The structure of the present invention for solving the above-mentioned problems is to connect a device body to a pulling wire from the ground side, and to connect the tip of the device body to the axis of the device body. A tapered guide nozzle is provided, and a propeller that rotates around the central axis of the apparatus body is provided in the guide nozzle.
A plurality of arms are radially rotatably supported around a rotation shaft of the propeller, a brush is attached to a tip of the arms, and a cylinder provided with a piston that is reciprocally driven along a central axis of the device body is provided in the device. A piston of the cylinder is rotatably attached to the end of the arm on the side opposite to the brush, which is provided on the main body and sandwiches the support point of the propeller on the rotary shaft, and has a ring shape at the front end and the rear end of the device main body. It is characterized by attaching a floating wheel.

[0008]

Operation: The main body of the device is floated in the pipe by the floating wheel, placed on the water flow, made to flow downstream, and pulled back by the pulling wire to obtain the rotational force of the propeller. By driving the cylinder, the arm is opened radially via the piston, and the brush is brought into contact with the inner peripheral surface of the tube. When the propeller rotates, the brush rotates via the arm, and the inner surface of the pipe is cleaned.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the construction of the main body of a pipe cleaning apparatus according to an embodiment of the present invention, and FIG. 2 is a view taken along the line II--II in FIG.
FIG. 3 is a view taken along the line III-III in FIG. 1, and FIG.
The IV-IV line arrow line, FIG. 5 has shown the whole structure of the pipe cleaning apparatus.

As shown in FIG. 5, the device body 1 of the in-pipe cleaning device is connected to the pulling wire 2 and guided by the pulleys 3 and 4 attached to the corners of the carry-in / out hole 23, and the winch 5 on the ground.
Loosen or pulled back. Reference numeral 21 in the figure denotes an air hose that connects the air controller 22 and the apparatus main body.

The apparatus main body 1 will be described with reference to FIGS. 1 to 4.

A guide nozzle 8 which is tapered with respect to a central axis (axial center) 6 of the apparatus body 1 is provided at the tip of the apparatus body 1 (on the right side in FIG. 1), and the guide nozzle 8 has an opening 7. It is equipped. A floating wheel 9 is placed on the outer circumference of the guide nozzle 8, and the floating wheel 9 is held by guide spokes 10.

A propeller 11 having a central shaft 6 as a sliding shaft is mounted in the guide nozzle 8, and a plurality of (six in FIG. 3) bearings 12 are radially provided on a rotating shaft 11a of the propeller 11. Pin 1 for each bearing 12
The arm 15 is rotatably supported via the arm 3,
A brush 14 is attached to the tip of 5.

The apparatus body 1 has a cylinder (air cylinder).
17 is provided, and the cylinder 17 is provided with a piston 18 that is reciprocally driven along the central axis 6. The end (base end) of the arm 15 opposite the brush 14 with the pin 13 in between
A tip end of a piston 18 is rotatably supported by a pin 16. In other words, the reciprocating drive of the piston 18 causes the six arms 15 to open and close.
The brush 14 is pressed against the inner surface of the tube A when the 5 is opened.

A small diameter floating wheel 19 is attached to the rear end (left side in FIG. 1) of the apparatus main body 1, and the floating wheel 19 is a guide spoke 2
It is held at 0. An air hose 21 and a pulling wire 2 are connected to a rear end portion of the apparatus body 1 via a rotary joint 24, so that even if the apparatus body 1 is rotated by a water flow, air supply or the like is not hindered.

The operation of the pipe cleaning device having the above structure will be described.

The arm 15 is closed by driving the cylinder 17, and the apparatus main body 1 is carried into the tube A. The apparatus main body 1 floats on the water flow by the floating wheels 9 and 19, and the water flow is throttled by the guide nozzle 8 to rotate the propeller 11.

The arm 15 is opened by driving the cylinder 17, and the brush 14 is pressed against the inner surface of the pipe A. The arm 15 is rotated by the rotation of the propeller 11, and the inner surface of the pipe A is cleaned by the brush 14.

As compared with the floating wheel 9 on the front end side, the floating wheel 19 on the rear end side
Since the diameter of is smaller, the apparatus body 1 is centered on the central axis of the pipe A by the water flow. Further, since the floating wheel 9 on the tip end side is attached to the outside of the guide nozzle 8, the floating wheel 9 restricts the water flow toward the central axis. Further, when the apparatus body 1 is loaded or unloaded, the floating wheels 9 and 19 contact the inner wall of the pipe A.
Therefore, the apparatus main body 1 is brought into smooth contact with the inner wall of the pipe A so that loading and unloading can be carried out smoothly.

Therefore, in the above-described pipe cleaning device, the inside of the pipe A can be cleaned without providing a drive mechanism for cleaning, and the high-speed flow cleaning, which has been difficult in the past, can be efficiently performed.

[0021]

In the pipe cleaning device of the present invention, a propeller which is rotated by the water flow guided by the guide nozzle is provided in the device body, an arm having a brush at the tip is attached to the propeller so as to be openable and closable, and a floating wheel is attached to the device body. Since the propeller is rotated by placing the device body on the water flow and the brush comes into contact with the inner surface of the pipe via the arm for cleaning, a drive mechanism for cleaning is not required and high-speed flow is not required. The better the cleaning efficiency, the better. As a result, the inside of the pipe can be efficiently cleaned with extremely simple and inexpensive equipment, and the handling becomes easy.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a device body of a pipe cleaning device according to an embodiment of the present invention.

FIG. 2 is a view taken along the line II-II in FIG.

3 is a view taken along the line III-III in FIG.

FIG. 4 is a view taken along the line IV-IV in FIG.

FIG. 5 is an overall configuration diagram of a pipe cleaning device.

FIG. 6 is a schematic configuration diagram of a conventional pipe cleaning device.

[Explanation of symbols]

 1 Device Main Body 2 Traction Wire 5 Winch 6 Center Axis 8 Guide Nozzle 9,19 Floating Wheel 11 Propeller 12 Bearing 14 Brush 15 Arm 17 Cylinder 18 Piston A Pipe

Claims (1)

[Claims] 1. A device main body is connected to a pulling wire from the ground side, and a guide nozzle that is tapered with respect to the axis of the device main body is provided at the tip of the device main body, and a guide nozzle is provided around the central axis of the device main body. A rotating propeller is installed in the guide nozzle, and a plurality of arms are supported rotatably in a radial direction around the rotation axis of the propeller, and a brush is attached to the tip of the arm to reciprocate along the central axis of the apparatus body. A cylinder provided with a piston to be driven is provided in the main body of the apparatus, and a piston of the cylinder is rotatably attached to an end portion of the arm opposite to the brush across a support point of the propeller on a rotation shaft, A pipe cleaning device, characterized in that ring-shaped floating wheels are attached to the front and rear ends of the main body of the device.