JPS58100798A - Crad accumlating device - 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 The present invention relates to a crud accumulation system for collecting water contaminated with radioactive crud.

Conventional clad mulberry horizontal filters are installed between pipes for water to be treated and treated water guide pipes in nuclear power plants, etc., and the filters are replaced as needed.

However, when replacing a filter, workers are exposed to a relatively high amount of radiation d due to the crud accumulated on the used filter.
+jl There was a risk of exposure.

At the same time, even when the filter is removed, there is a risk that the cladding from the filter will be scattered onto the floor, increasing the contamination caused by the latent radiation.

Therefore, the present invention provides a clad Rakushusosha that solves the above problems.

In this device, the device main body 1 consists of a water tank (hereinafter water + f11
), a filter 2 with an upper 4j28 is supported in the water tank l so as to be freely reversible around a horizontal axis, and a movable body ( A movable body (hereinafter referred to as a movable body IO) is provided. Furthermore, a check valve 32 is installed at the opening of the filter 30 installed in the filter 2.
to fix.

The filter 30 is removably installed in the filtration 52 so that it can fall together with the check valve 32 by inverting the filtration @ 2 and opening its volume 28. It is. Hereinafter, six aspects of one embodiment of the present invention will be explained in detail based on the drawings.

As mentioned above, the water tank 1 and the filter 2 are set to 41#l.
i do The water 41 is formed in the shape of a tower with an upper lid 8 for the water tank, and a vehicle inspection 6 and its drive device 7 are mounted on the lower surface, and a J drive value control non-receptor deflector is mounted *t, and the swallow is run vertically. It is freely configured. Incidentally, at least the wheels are driven independently of the left and right wheels, so that the direction of travel can be changed. A guide 9 is provided at the bottom of the aquarium 1, and the movable body 1O is guided by the guide 9, and the M"T unit 1 (DC operation handle 1) is guided by the guide 9.
'2 lA) is attached, the middle part of the handle 11 passes through the wall of the water 41 via a seal (not shown), and the nuclear handle l! is configured so that it can be freely accessed and removed.

Deposit 12 is dTt. Next, near the upper part of the water tank l, the filter 6 main body 43 is attached to a bearing 15 with a coolant 14 attached thereto.

IGL is rotatably supported by 16L/C. A part 417d of the main body support shaft is composed of a tube forming the flow path 19, and one end of the abbreviated tube 18 is connected to the tube, and I*
The other end of the L-shaped tube 18 opens at the bottom of the transitor body 13. Further, the suction side of an axial flow pump 20 for suction is connected to the outlet end of the flow path 19 formed in the shaft 17, and the outlet side of the pump 20 penetrates the 411 side of the water tank l and connects to the ball valve 21. communicated.

Thus, the flow path that communicates the abbreviated pipe 18, the flow path 19, and the ball valve 21 constitutes the outlet pipe 5, and the ball valve 21 constitutes the attachment portion 3 of the treated water conduit (not shown). do. The other shaft 22 of the support shafts of the filter main body 13 has one end fixed to the outer peripheral surface of the filter main body 13 (and the other end penetrates the wall surface of the water tank l). A motor 25 with a speed reducer for overturning the filter is connected via a worm 24 to the wheel 23 to which the other end sK is fixed.
A pipe 27 is connected to the center opening 7 through a xipul hose 26, and the pipe 27 passes through the upper surface of the water tank 1, and a ball valve 21 on the suction side is provided at the end of the pipe 27.

The inlet pipe 4 is constituted by the FII 6 that connects the center opening of the upper lid 28 of the filter main body 13 and the ball valve 21 on the suction side, and the ball valve 21 connects the attachment part 3 of the pipe for water to be treated (not shown). Configure. Also, one 11sK of the periphery of the upper lid 28
A pivot portion 33 (FIGS. 2 and 3) is attached, which is pivoted to a part of the upper edge of the filter main body 13, so that the upper portion 1128 can be opened and closed in a single-opening manner. . Further, a locking member is provided protruding from the edge of the upper lid on the opposite side of the pivot 11633 with respect to the center of the upper lid. When the filter main body 13 is rotated, the locking member engages with a lid opening member (not shown) attached to the inner surface of the water tank, and the upper lid 28 is opened. Next, the filter 2 is
It consists of a main body 13, a filter support body fixed to the main body 13, and a filter 30 detachably mounted to the support body 29. In this embodiment, the filter support 29 is formed into a coarse cylindrical shape. In addition, the filter garden consists of a filter part 31 with a mesh of 1 μm to 20 μm, and a substantially pot-shaped cylinder with a JI!ld edge fixed to the entire circumference of its opening and a filter @BlK as shown in ttXA-. The film type check valve 32 guides the water to be treated that has flowed in from the center opening of the upper lid 28 of the filter main body 13 to the filter section 31, and also directs the water to be treated from the film at the time of backflow. #qI The end of the hollow cylindrical body is closed to prevent the backflow.

Note that the used filter 30 is discarded together with the film type check valve 32. In addition, there is a used filter storage container 1 that stores filters (resources) in which a certain amount of cladding is accumulated.
2 has a capacity that can accommodate several or more filters 30. The container top opening 36 as shown in FIG. 5 can be screwed or fitted into the top opening. Furthermore, a U-shaped handle 37 is fixed to the upper lid 36. The handle 37 is formed in the same size as the handle attached to the upper end of the control rod of the nuclear reactor, and the upper @SS is attached using a gripping device for lifting the control rod, and the used filter is stored. The structure is such that it is possible to lift the vessel out of the water tank.

Next, the operation of the cladding device of the present invention will be explained.

For example, 1. IIIJ (not shown) - the inner filter, outer filter, etc. of the 11 mechanism are cleaned.
Open one end of the pipe for the water to be treated into the contaminated part of the fc# tank,
The other end is forged into the attachment part 3 of the inlet pipe 4 of this device. Next, the outlet pipe 5 of this device is attached, one end of the treated water conduit (not shown) is connected to 1S3, and the other end is opened into the washing Pp4.

In such a situation, by starting the llAm motor of the axial flow pump 20) d! Operate the pump 20. Then,
At this time 4111//! Pump 20 is at outlet 1 of filtration 42
11, the water pressure inside the strainer 2 becomes negative pressure. Therefore, there is no possibility that the contaminated water in the filter 2 will leak out from the upper gap 428 or the like.

The cladding containing the four radioactive substances is then captured in the filter. The crud is mainly composed of radioactive 4, limescale, and copper m41 contained in the reactor water.
The treated water from which the crud has been removed is then guided from the filter 30 through the 4DLFI pump 20 to the outlet pipe 5 to the treated water guide pipe, and is returned to a cleaning tank (not shown). do. Therefore, Ia flow pump 20V
Since only clean treated water flows through C, the cough flow pump 20 is hardly contaminated with radioactive substances. In the filter 30, a cladding having a high radiation content is accumulated for the next tjgK, but radiation 4! is emitted from the accumulated cladding. However, since the radiator is shielded by the water in the water, it is almost impossible for the radiator to be emitted outside the water. Next, when a specified amount of crud is accumulated in the filter, the axial flow pump 20 is stopped, and the motor 25 with a speed reducer for rotating the filter main body is turned on. Then, the shaft 22 and the F4 device main body 13, which is integral with the shaft 22, slowly rotate through the nuclear motor 25, the worm 24, and the wheel 23. Then, the lock 534 (FIG. 2) of the upper lid 28 engages with a lid opening member (not shown) attached to the inner surface of the water tank 1, and the upper nucleus 28 is opened. Then, the filter main body 13 and its upper cover a rotate to the position indicated by the chain -0 in FIG. 2, and stop in that position. That is, the FIG main body 13
When it turns 180 degrees, a detector attached to the shaft 22 etc. outputs a reversal signal, and the ftc motor 25 is stopped due to the reversal of the eccentricity. Then, the filter body installed in the filter body 13, together with the film-type check valve 32, slowly floats down into the water due to their self-adhesion. The filter pouch is stored in a used filter storage container 12 that opens directly below the filter main body 13. Note that the filter 30
Since a film cedar check valve is attached to the opening of the filter 30, there is no risk of crud coming out from the filter chrysanthemum a into the tank l when the filter 30 falls through the water in the tank l. . Meanwhile, reverse the motor 25 with a reduction gear marked # and turn it to P.
46 Return the main body 13 to its original state. Next, remove the upper part 8 for the aquarium and install a new filter chrysanthemum inside the filter 4 main body 13,
The crud in the water to be treated is collected by a new filter 30 again. After performing this work in 10 sections and filling the upper lid of the used filter storage container with a large number of used VR filters, connect the Ph water treatment piping and treatment (not shown) from each attachment part of the artificial pipe 4 and outlet f6. Remove the water conduit. Next, the driving device 7 attached to the lower surface of the water paddle 1 is operated without any operation, and the water tank 1 is moved to the container storage location. Next, the handle 11 protruding from the bottom of the aquarium l
(Fig. 2) to move the movable body 10 connected to the handle 11. Then, the used filter storage container 12 placed on the OT moving object 1G is positioned along the chain line in Fig. 2. Next, the top lid 8 for the water pail is removed. Then, using a gripping device (not shown) for lifting the control rod, insert the container top cover 36 into the water tank 1 while gripping the handle 37 of the container sandbag 36 (FIG. 5) with the gripping device, It is applied to the opening of the used filter storage 612. Then, the handle 37 is rotated around the vertical @ line, and the upper cover 36 is attached to the filter storage 1.
It stops at 2. Next, the upper lid 36 and the Kyowa filter storage container 12 are taken out of the water tank and placed in the container storage space. Note that the installation work of the container soil @36 may be performed before the aquarium 1 is moved. In that case, the container can be transported to a predetermined location more safely.

As is clear from the above explanation, the gist of 1 @ Ming is that the device body (water tank) 1K supports the filter 2 with the upper lid in a strangely reversible manner on the horizontal axis 1#, and the lower direction of the filter 2 is +14C. * A support s (&IT integrated) 10 for the used filter storage container 12 is provided, and a check valve (film-type check valve) 32 is solidified at the opening of the filter 30 installed in the filtration 62. And the filter 30 is.

It is characterized in that it is removably housed in the filter 52 so that it can fall down together with the Gakujo valve by turning the filter 2 upside down and opening its jacket 28. . Note that the main body 1 of the 5ltrt device may form a water tank.

Since the apparatus of the present invention has the above configuration, it has the following young fruit.

By inverting the filter 2, the used filter bag can be dropped into the used filter storage container 12.

Therefore, used filters can be stored in the storage container 12 without the operator touching the filter garden. Therefore, when the filter is replaced, there is almost no exposure to radiation due to radioactive substances contained in the cladding. Also, filter 2
Since the used filter 30 can be stored in the used container 12K111 located directly below it, there is no possibility that the crud inside the filter will be scattered on the floor etc. Furthermore, the opening of the filter 30 is provided with a backstop. The valve 32 is fixed, and the filter 9 falls into the storage 612 together with the check valve. Therefore, when the filter falls, the crud in the filter garden will not flow backward, and the crud will not be scattered in the 4jl'l vessel 12. Therefore, there is no possibility that the radioactive 4IB substance contained in the cladding will diffuse from the opening of the storage a12. In addition, if the main body 1 of the apparatus is constructed of a water tank, radiation exposure of workers can be more completely prevented.

[Brief explanation of the drawing]

The drawings show an embodiment of the device of the present invention, in which FIG. 1 is a partially cutaway elevational view, FIG. 2 is a sectional view taken along the line A-A in FIG. 1, and FIG. 3 is a part of the filter 2. 4 is a longitudinal sectional elevational view of the filter 30, and FIG. 5' is a perspective view of the used filter storage container with a top cover attached. l...4 & 11 main body (water tank 2...-water tank, 3...
・Mounting part, 4... Inlet pipe, 5... Outlet pipe, 6...
Wheels, 7... Drive@device, 8... Upper price for aquarium, 9...
・Guide, 10... Support part <arvib body), 11・
... Nodle, 12 ... Used filter storage 4, 1
3...P4 device body, 14...Seal. 15, 16..., bearing, 17, 22... shaft, 58...
...abbreviation tube, 19...44,2o...qsg bong, 21...ball pulp, 23...wheel, 2
4... Worm, 25... Mo-p with reducer, 26.
... Flare ship pull hose, 27... Pipe% 28... Upper cover, 29... Support body, 30... Filter, 31.
...Filter part, n...Film type check valve, 33...
- Pivot part, 34...Locking part, 35...Drive motor,
Staple: Upper lid for the container. 37...Handle, t...Water surface, C, D...Ken-6 agent Patent attorney Kubo 1) Taku Midai 1 Figure 2 Figure 3 Figure 4 Figure 5 rl! J

Claims (1)

[Claims] υ Transient device with upper ti (2g) attached to device main body (1) ■
horizontal 4ti1mL! l! Reverse the opening (support on E,
A used filter storage container (12) is located below the filter ■.
A support part (10) is provided, a check valve (32) is fixed to the opening of the filter (30) installed in the filter (3), and a v'* device 2) is installed in the filter (30). As mentioned above, the check valve (32) is freely installed in the evaporator 2 so that it can be lowered together with the check valve (32) by opening its upper cover (28). Timely Cladzd accumulation device. 2) Claim 5 in which the main body (1) is a water tank
G1 Hanaki-fe placement.