JPS6054776A - Automatic remote cleaner in pipe - 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 [Technical Field of the Invention] The present invention relates to an automatic remote control system for cleaning, transporting, and inspecting shellfish and seaweed that have adhered to or peeled off inside a pipe that introduces cooling water, such as seawater. Regarding cleaning equipment.

[Technical background of the invention and its problems]

In general (2) Thermal power stations and nuclear power plants (2) In the circulating water piping that cools water equipment, for example, large amounts of shellfish and seaweed (-) grow attached, and these shellfish and seaweed This reduces the effective area within the piping.In addition, this reduces the intake resistance of the cooling water and reduces the cooling efficiency of the condenser. Shellfish and seaweed are naturally removed (2) into the cooling tube group of the above condenser (2) and prevent the flow of cooling water and prevent corrosion from flowing into the condenser's cooling tube group (2). Due to the cause,
Periodic (cleaning and inspection work inside the two pipes is carried out.

On the other hand, nuclear power stations are
The power plant building is constructed directly on the bedrock.

Normally, the bedrock is located deep underground, so using the above method would result in nearly half of the building being located below sea level. =
The circulating water pipe that cools the condenser is deep.
In addition, it forms a complex flow path that is a combination of bends, steep slopes, vertical pipe parts, branch parts, and the like.

In the past, cleaning, carrying out and inspecting the circulating water piping, which had a complex flow path, was carried out regularly by hand without relying on machines, resulting in low work efficiency and There are disadvantages such as poor environment.In particular, the work of removing shellfish is not only hard labor, but also the surrounding environment is poor due to the decomposition of dead shellfish and the generation of foul odors and toxic gases. In addition, the inside of the pipes was dark and very prone to leakage due to residual water and seaweed, and the work was carried out for long periods of time under extremely poor conditions.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned circumstances, and the present invention has been made in view of the above-mentioned circumstances. The purpose of this invention is to provide an automatic remote cleaning device for inside pipes, which aims to improve the efficiency of cleaning and carrying out work without having to carry out work under poor working environment conditions.

[Summary of the Invention] - In order to achieve the above object, the present invention provides an in-pipe working vehicle (2) a directional TV camera that travels inside the pipe, and a position movement adjustment system for crushing accumulated shellfish, etc. inside the pipe. A suction nozzle whose position can be adjusted to collect crushed sediment from this nozzle, and an extendable support column for fixing an in-pipe working vehicle inside the pipe are provided. A duct ft4 is connected to the nozzle, and this duct is connected to a suction device (2) installed on the ground via the first winding device (=, and a moving power cable that supplies power to the pipe working vehicle (2) is connected to the second The present invention is characterized in that two winding devices C are connected to each other, and the first and second winding devices are connected to an operation control device provided on the ground.

[Embodiments of the invention]

The present invention will be described below with reference to the attached drawings, using Embodiment C in which the present invention was applied to cleaning and carrying out inspection work of circulating water piping at a nuclear power plant (2).

The code 1 in the figure is a pipe. This pipe 1 is buried underground 2 (= buried) at the nuclear power plant. Also, this pipe 1 (1)
Part 2 is equipped with 3 manholes. 4 is an in-pipe work vehicle 69, and this in-pipe work table 4 has wheels 5 (2) that travel inside the pipe (= telescopic support column 6), and a Q-shaped support column (2) in the pipe of this support column 6 ( - It has a structure that allows for more fixed work.In addition, this pipe work vehicle 4≦2 is equipped with a TV camera 7 that can be moved freely (direction), and a hammer whose position can be adjusted to crush accumulated shellfish. 8,
A drive, a rock 9, a suction nozzle 1O whose position can be adjusted to collect crushed shellfish, etc. are provided. Suction nozzle 1
A duct 11 for sending the sucked shellfish is connected to the rear of 0 (2), and this duct 11 is connected to the ground (2) via an intermediate reel 12.
The suction device 14t=
I'm in touch. In addition, there is a pipe working vehicle 4 (with two Jts) and a sea bream cable 15 that supplies oil or nitrogen to the hammer 8, etc.
17 reaches the ground via the middle 14 reel 16 (two winding devices 18i installed).
5 is taken out from a take-up device provided on the in-service vehicle 4, and is connected to a ground fixing device 26 via an intermediate reel. The power unit train and the control equipment train (2) are connected to each other by a moving power cable n, and the winding device 13.18 is driven via this moving power cable 27'. Dynamic power cable connected to power cable n 15.17
+=yo#) Power is supplied to the pipe work 4.

Next (I will explain the two actions. Insert the pipe working vehicle 4 through the manhole 3, move it freely inside the pipe 1, and use the TV camera 7 to inspect the control equipment array (= watching a certain TV monitor. ] If the device finds a pile of shells that have been peeled off or dead and fallen, the TV camera 7 is used to take pictures and the hammer 8 is used to locate the location and crush the shellfish into a size that can be sucked in. At that time, the in-pipe work vehicle 4 is mounted on the support column 6.
, wheels 5, and hanging ropes 23 (fixed at two fixed positions).

Next (Second) While watching the accumulation of shellfish with the TV camera 7, suck in the shellfish while moving the direction of the suction nozzle 10.

In other words, by sucking in air or water, it sucks in the shellfish with it. In this way, it is confirmed that there is no accumulation of shellfish.
After confirming with V camera 7, proceed further. Dynamic power cable 17. Duct 11. The hanging clove machine advances to work type 4 in 'a' and is then taken out again by 9. The winding devices 13 and 18 are installed on the ground (two devices are installed on the in-pipe work vehicle 4 and on the in-pipe work vehicle 4), so that the cable 15 and duct 11 may be taken out from the pipe work vehicle 4. In this way, while the work vehicle 4 in the pipe 1 is running by the control device 29 on the ground side, the shellfish and seaweed deposited on the bottom of the pipe (including the pile 8, Ia) are It is shaped into fruit using a tool such as a nozzle 10 and discharged to the ground.

〔Effect of the invention〕

As mentioned above, according to the invention, even in areas with poor cleaning work environments, remote control from the ground can be performed for a longer period of time (two consecutive days), greatly improving cleaning work efficiency. Not only can workers be relieved from dangerous work on scaffolding, but also the cleaning of circulating water pipes with complicated flow paths can be completed in a short time. demonstrate.

[Brief explanation of drawings]

The drawing is an overall configuration diagram showing one embodiment of the present invention.

Claims (1)

[Claims] An in-pipe work vehicle (2) that moves inside the pipe (2) a directional TV left camera, a hammer whose position can be adjusted to crush shellfish, etc. that has accumulated in the pipe (2) A suction nozzle whose collection position can be adjusted,
An in-pipe work vehicle is installed inside the pipe (a retractable support column for fixing it), and the suction nozzle (two ducts are connected to each other, and this duct is connected to the ground (two suction devices (two) through the first winding device). As well as connecting (2. operation control device (in-pipe automatic remote controller 1ii characterized by two connected
Sweeping device.