JPS59120899A - Underwater cleaning machine - 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 is an underwater cleaning method for underwater cleaning of the bottom of a fuel pool of a nuclear facility, the bottom of a site/manker pool, the bottom of a reactor well, the bottom of a Nork head, and the bottom of other bits. Regarding machines.

[Technical background of the invention and its problems]

Generally, nuclear power facilities are equipped with a fuel pool to store spent fuel, a site bunker pool to store waste generated within the nuclear power plant, and various other bits. There was a problem in that fallen objects such as cables were accumulated, and the radioactive deposits increased the radiation exposure of workers during periodic inspection work.

For this reason, in the past, two types of underwater vacuum cleaners, shown in FIGS. 1 and 2, have been used to clean pools and bit bottoms underwater. The specifications and drawbacks of these two types of underwater vacuum cleaners will be explained below.

The submersible vacuum cleaner of type ■ shown in Fig. 1 uses the suction power of the pump 1 installed in the tank 4 to suck in dirt from the suction port 2, and removes large dirt (such as vinyl wire, etc.), bolts, etc. , nut, haint, etc.) can be inhaled by inhaling ``】2
This is a two-stage treatment type in which small dust (for example, sand, crud, etc.) is collected by a filter 3.3.

However, since pump 1 and filter 3 are integrated, once used, pump 1 alone cannot be lifted into the air, and even if pump 1 breaks down, maintenance and inspection in the air is impossible, so the filter 3 required a large amount of space for storage and disposal.

In the submersible vacuum cleaner of type (3) shown in Fig. 2, a pump 5 is installed in the air, that is, on an operating floor 10, and the pump 5 is activated by a control panel 11 to utilize the suction force of the pump 5. , in the pool or bit G via the ejector 7, and uses the differential pressure generated by the flow of water in the ejector 7 to suck in the dirt.Like Type I, the inlet port 2 The strainer and receiver are of the filter 30 type provided in the tank 4 for two-step processing. This filter 3 is also of a cartridge type like Type I.

However, with this type of submersible vacuum cleaner, although it is possible to perform maintenance and inspection of the pump 5 in the air, it is not possible to perform maintenance and inspection of the pump 5 in the air.
Since the suction port 8 that sucks in the water, the suction port 8 that sucks in the dirt, the suction pipe 9, and the ejector 7 are required, the device becomes large and has a small drawback of poor operability.

As mentioned above, the two conventional types of underwater vacuum cleaners are
] Since it is a two-stage process with strainer 2 and filter 3,
Since the dust collection capacity is small and the Cartritsu 2 type filter 3 is used, storage space for the large i filter 3 is required, and maintenance and inspection of the pump 1 in the air is not possible with the Taizo I. However, Type ■ had the disadvantage of poor operability.

[Purpose of the invention]

The present invention has been made in view of these points, and by using a rotor in Cyclone Nanano, the garbage collection capacity -1) can be increased by 71. By using the S-Tsuku filter, it is possible to reduce the volume of the filter, and the pump can be removed underwater, allowing for maintenance and inspection of the pump in the air. The purpose of the present invention is to provide an underwater vacuum cleaner that has a smaller main body, improved operability, and can be stored in air except for the filter.

[Summary of the Invention] The underwater vacuum cleaner of the present invention has an eyelid (-1
, a suction pipe adjacent to this suction port, a Zyron senor ξlator connected to this suction pipe and which separates the sucked in dust into large and small dust with a ratio of 11, and a A collection tank is connected to the tank to collect dust with a large specific gravity, a submersible pump is connected to the upper side of the Leekron separator and can be driven underwater, and a submersible pump is connected to the tip of the submersible pump to collect dust with a small drive. The cyclone secretor, the collection tank, the submersible pump, and the lug filter are formed so as to be separable into phases.

[Embodiments of the invention]

The present invention will be explained below with reference to the embodiments shown in FIGS. 3 and 4.

In the figure, reference numeral 3-5 is a pool or pit filled with water, and at the bottom of this pool, trash 12, which is radioactive crud, bolts, nuts, vinyl wires, and other debris, is accumulated. The configuration of the present invention includes suction [113,
A suction pipe 14 and a suction hose 15 connected to the suction port 13
The dust 12 is connected to this suction hose 15 and sucked into the dust 12 with a high specific gravity and a dust with a low specific gravity +) li+
A Zylon separator 16 that is connected to the lower side of the Zylon separator 16 to collect dust with a large specific gravity, and a collection tank 17 that is connected to the northern part of the Zylon separator S lake 16 and can be driven underwater. submersible pump 1
A collection tank [7, Zylon separator 15, submersible pump 18,
・The filter 19 is connected and fixed to one pedestal side, and a lowso 21 is attached to the end of this pedestal side, and the end of the rope 21 is fixed by pressure to the handrail (not shown) next to the fuel exchanger. By operating the refueling machine, the cradle 2
0 is moved. 1/The suction pipe 14 is attached to the auxiliary hoist 22 of the fuel exchanger, and the suction pipe 14 is connected to the auxiliary hoist 22 by... and suction l'13 are moved.

Tighten the suction port 13! To do this, the operator on the refueling machine moves the handle 23. The suction port 13 may be of a Y type or a replaceable outer structure depending on the shape of the place to be decontaminated. Also, a fy, 1st strainer (not shown) is installed in the suction [] I3 to prevent large dirt from entering. The collection tank 17 can be separated from the pedestal 20 by an underwater dome, and the lids 2 and 1 can also be attached underwater. submersible pump 1
8. The structure jθ is such that it can be separated from the pedestal 20 by rotating the Zylon sensor ξlator 16)' and f5. In addition, since the ring filter 19 is made of a flexible member of the sag type, it can be reduced in volume and requires almost no space for storage.

Next, the effect will be explained.

The motor of the submersible pump 18 is rotated by pressing a switch on a control panel installed in the air, and the suction force generated by the rotation of the motor sucks the dirt together with water from the submersible pump 13. At this time, Japanese dog garbage such as vinyl wires and dust is removed by the strainer in the suction port 13. And sucked in from suction [ ] 13 / Kogomi 12
flows into the cyclone separator 16 via the suction pipe 14 and suction hose 15. Therefore, the Cyclone Controller ξ
Using the swirling flow of 6, 114 large garbage with a high specific gravity (e.g. bolts, nuts, screws, paint, vinyl, sand, crud, etc.) falls into the collection tank 17, and fine garbage with a low specific gravity (e.g. , paint, vinyl, sand, cladding, etc.) are collected by a Nog filter 19 via a submersible pump 18.

Also, by loosening the screw 5 and pulling the wire 26 upward, the submersible pump 18 and Nonog filter 19 are separated from the Zyron separator/gulator 16, and pulled up into the air to replace the Nonog filter 19. The submersible pump 18 can be maintained and inspected. '-1, the collection tank 17 is mounted on a stand '7.
Separate the machine A and Jζ (not shown) from O by cutting it off 7, then put on the lid 24, lift it up into the air, and store it (move it to J 5'r). be able to.

Next, the underwater vacuum cleaner of the present invention and the above-mentioned types (1) and (1) will be compared and explained with reference to Tables 1 to 4.

As can be seen from the objects to be collected in Tables 1 to 3, T fleas 12 can be collected by the apparatus of the present invention according to the size of the dust 12 through the three steps of pretreatment, intermediate treatment, and IU final treatment. Garbage] 2. Collection volume increases.

-! As shown in Table 4, we conducted an actual experiment and found that the underwater vacuum cleaner of the present invention has the following advantages in terms of collecting dust 12, filter life, and possibility of filter volume reduction. F)
It can be seen that type 11 type ■ is much better than the type 11 vacuum cleaner.

〔Effect of the invention〕

As described above, the underwater vacuum cleaner of the present invention has the following features:
Because it is processed in three stages, the amount of garbage collected is greatly increased.
・Since it uses a 9-tug filter, the filter volume can be reduced, and it does not require a large space for filter storage or disposal. In addition, since the nog filter, submersible pump, cyclone separator, and collection tank can be separated underwater, maintenance and inspection in the air is easy, and the small size makes it easy to operate. Therefore, the exposure of the operator to radiation is reduced, and effects such as being useful in removing radioactive deposits are produced.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing the configuration of a conventional underwater vacuum cleaner (type I), Fig. 2 is a schematic diagram showing the configuration of a conventional submersible vacuum cleaner (type ■), and Fig. 3 is a schematic diagram showing the configuration of a conventional underwater vacuum cleaner (type ■). FIG. 4 is a schematic diagram showing one embodiment of the present invention, and FIG. 4 is a perspective view showing an underwater vacuum cleaner of the present invention. 12... Komi, 13... Suction port, 14... Suction pipe, 16... Cyclone se router, 17... Collection tank, 18... Submersible pump, 19... Nono filter. Applicant's representative Kiyoshi Inomata Table 1 Collection target of conventional underwater vacuum cleaner (type ■) ◎ Processed water volume 36 M/hr Table 2 Collection target of conventional underwater vacuum cleaner (type ■) ◎ Processed water volume 12 M3/hr Pier 7/Figure 1 Le Curtain 2 Figure 1 Spoon 3 Figure Pan Δ Diagram'', ・X-.

Claims (1)

[Claims] A cyclone separator is connected to the suction pipe and separates the dust that has passed through the suction line into those with a large specific gravity and those with a small specific gravity. A gelator, a collection tank connected to the lower side of the cyclone separator to collect dust with a large specific gravity, and a submersible pump connected to the second side of the cyclone separator and capable of being driven underwater. and a filter connected to the tip of the submersible pump to collect dirt with low specific gravity, the cyclone separator, the collection tank, and the submersible 71? An underwater vacuum cleaner for a nuclear power plant, characterized in that a pump and a lug filter are formed so as to be mutually separable.