JPS63309900A - Optimum packing system for material to be compressed of high-pressure compression and volumetric reduction treatment equipment - Google Patents

Abstract

PURPOSE:To execute efficient packing of drum cans for storage by making combination use of a turn table system involving disposition of plural pieces of the drum cans on roller pedestals of a turn table and a microcomputer. CONSTITUTION:The materials which are molded and volumetrically reduced by a press section 1 and are to be compressed are ejected onto a roller conveyor 2 and are packed into the drum cans 5 for storage selected on the turn table 4 by a device 3 for repacking the materials to be compressed 3. On the other hand, the drum cans 5 which attain a packed value are delivered by a delivery cylinder 8 from the table 4 onto a delivery roller conveyor 9 and are sent to the ensuing stage. The fresh drum cans 7 are supplied onto the table 4 by a fresh drum can replenishing machine 6 to replenish the delivered drum cans 5. The microcomputer is used in conjunction with such turn table system. The optimum packing drum cans for the respective materials to be compressed are selected by using the drum cans' own weights and packing weights, the limit values and min. limit values for height, as well as the weights and compression heights of the materials to be compressed as microcomputer inputs, then the materials are packed into the drum cans, by which the packing of the materials into the drum cans is efficiently executed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention consists of (1) placing radioactive waste generated from a nuclear power plant in a container such as a drum, compressing it together with the container; The present invention relates to an optimal filling system for compressed products in a stacking device that stacks a plurality of products into drums.

(Prior Art) The following two methods have been published as methods for filling a storage container with a compressed product. One is to sequentially fill a 200Q storage drum with the compressed material discharged from the press, and when it is full, remove the drum, replenish a new drum, and fill it with the compressed material. be. One more
First, the weight, height, and surface dose rate of a large number of compressed products are measured, arranged on a roller conveyor, and microcomputer control selects and fills multiple compressed products to be filled into 200Q drums for storage. This is the way to proceed.

In the former method, there is a 1:1 correspondence between the compressed product and the storage container. Therefore, even if an attempt is made to fill a storage container filled with one compressed product with the next compressed product that exceeds the height or weight that can be filled, the container may not be able to fit the next compressed product. Furthermore, it is expected that there will be extremely inefficient cases where only one compressed product can be filled in a certain storage container, and the filling efficiency of the storage container will be greatly reduced. With this method, it is difficult to expect high volume reduction efficiency for the entire facility.

Next, the latter method has the advantage of high efficiency in filling 200Q drums for storage because one storage container can handle a large number of compressed products, but it requires space to line up a considerable number of compressed products. And since they are lined up naked on a roller conveyor, it is necessary to take measures to prevent contamination of each device from scattering radioactive materials and to prevent contamination outside the room.

As a result of the above, the space required for the equipment increases, and additional measures are required, leading to an increase in costs.

(Problem to be solved by the invention) One of the conditions required for high compression volume reduction treatment equipment for low-level non-flammable miscellaneous solids used in nuclear facilities such as nuclear power plants is to The goal is to have a compact design and reduce the installation floor space. Therefore, it goes without saying that the high-pressure hydraulic press itself, which is the central equipment of the equipment, must be made more compact, but this is also required for the post-processing section in which the compressed product processed by the press is filled into storage containers.

The present invention has been developed.1 In order to meet these demands, the installation area can be greatly reduced, a high filling rate can be ensured in the storage container for compressed products, and the type of nonflammable miscellaneous solids received can be input. This aims to provide a filling system that also enables management such as distinguishing between storage containers.

(Solving Means by the Invention) A turntable is provided with a roller pedestal for mounting a plurality of drums for storing compressed products, and on each roller pedestal there is a cylinder for moving the drums for supplying and discharging the drums to the turntable. The system is equipped with a spring-type drum holding frame using a press, and fills the storage drum with a compressed product whose volume has been reduced by a press, wherein a plurality of drums are arranged on a roller pedestal on the turntable, Using a turntable and a microcomputer, input the drum's own weight, filling weight, height limit value, minimum limit value, and weight and compression height of the compressed product into the microcomputer, and select the optimal filling drum for each compressed product. and then filled it up.

(Example) FIG. 1 shows an apparatus for carrying out the optimal filling system for compressed products of the present invention. 1 is a press part, 2 is a roller conveyor on the press outlet side, 3 is a compressed product refilling device, 4 is a turntable, 5 is a new storage drum for storing compressed products,
6 is a new drum replenishing machine, 7 is a new drum for replenishing the turntable, 8 is a delivery cylinder, and 9 is a delivery conveyor.

The compressed product formed and reduced in volume by the press is extruded onto a roller conveyor 2, and is filled into a selected storage drum on a turntable 4 by a compressed product refilling device. On the other hand, among the storage drums, those that have reached the filling limit are discharged onto a discharge roller conveyor 9 by a discharge cylinder 8 from the turntable 4, and sent to a capping process or a solidification process. New drum cans 7 are supplied to the new drum replenishing machine 6 to replenish the storage drums that have been taken out.
is supplied onto the turntable 4 by.

As shown in the figure, up to eight storage drums can be mounted on the turntable 4. A roller pedestal 10 is provided on the storage drum mounting part on the turntable 4 (Fig. 2), and as a mechanism to prevent the drum from falling over, a spring-type mechanism that uses a cylinder to replenish or remove drums from the turntable 4 is provided. The drum holding frame 11 facilitates the removal of drums containing compressed material and the replenishment of new drums.

A roller conveyor 9 for discharging storage drums 5 and a new drum replenishing machine 6 are installed close to the turntable 4. To discharge the drum containing the compressed material that has reached the filling limit value (weight, filling height), the turntable 4 is rotated electrically, and the roller pedestal 10 on which the drum concerned is mounted is moved.
After aligning the drum with the position of the delivery roller conveyor 9 using the positioning cylinder 12, when the drum is pushed out onto the roller conveyor 9 by the delivery cylinder 8 located inside the turntable 4, the drum holding frame 11 is also automatically released. It has become.

To replenish new drums, use the roller pedestal 10 of the removed drum.
is aligned with the new drum supply machine 6 by rotating the turntable, and then the new drum can is supplied.

13 is a turntable bearing, and 14 is a roller follower. 15 is a speed reducer that drives the turntable 4 via a drive gear 16.

FIG. 5 shows the control flow of the compressed material filling system. The system is fully automatic operation controlled by a microcomputer. The input parameters to the microcomputer are the weight of the drum as common data, the filling weight/height limit values and their respective minimum limit values, and the weight and compression height of the compressed product. Explain the algorithm built into the microcontroller. Measured value m of compressed product
, h is input, first, for the 8 drums on the turntable (assuming that some compressed products have already been filled), the filling possibility of this compressed product is calculated as (h
+H) and HL, and m 10M and ML will be compared. As a result, drums whose values are equal to or less than the respective limit values are selected as those that can be filled. From this, [HL-(h +
H)] is determined as the drum filled with the compressed product.

Next, the turntable is driven to move the drum to the filling position, and the drum is filled with the compressed product.

Next, the filling data of this drum is updated, and the filling amount after filling is compared with the filling limit value. Here, let the weight and compression height of the empty 2001 drum be ΔM and ΔH, and compare them with the (HL-H) and (ML-M) values, respectively. If this value is larger than ΔH1ΔM, leave it as is, and if it is smaller, decides to take out this drum. When compressing a 200 fl drum containing non-combustible materials, the weight and compression height will naturally be larger than an empty drum, and ΔM and ΔH will be larger) Even if the compressed material comes next, this drum cannot be filled. It turns out. In examining the possibility of filling compressed materials, (h+H) and (m
Hma among drums with 10M) above each limit value
The drum of x will be paid out. Discharging drums and replenishing new drums are performed by driving a turntable, discharging cylinder, and operating a new drum replenishing machine. The microcomputer stores all information on compressed products and storage drums, and can make hard copies as needed.

The table below shows an example of the results of a simulation of filling compressed materials into storage drums using the turntable method. According to this table, when 50 200fl drums containing non-combustible materials are compressed, the case where 8 storage drums are mounted on the turntable is compared to the case where 1 drum is mounted on the turntable. It can be seen that the number of drums to be discharged is approximately halved, making it possible to achieve high filling efficiency.

In this example, the compressed height and weight of each of the 50 compressed products are determined on the assumption of a normal distribution with the standard deviation in the table.

Note) Assuming that the weight limit for storage drums is 500 kg and the filling height limit is 83 countries (effect) In a system that fills storage drums with compressed products whose volume has been reduced by a press, multiple drums are It is placed on a roller pedestal on a turntable, and the turntable and microcomputer are used together to input the drum's own weight, filling weight, height limit value and minimum limit value, and the weight and compressed height of the compressed product into the microcomputer. , the optimal filling drum for each compressed product was selected and filled. In this way, by combining the turntable method with a microcomputer, it has become possible to efficiently fill storage drums. As a result, we were able to significantly reduce the floor space required for the equipment.

Furthermore, it is no longer necessary to take measures to prevent contamination caused by the scattering of radioactive materials when compressed products are arranged on a roller conveyor, making it possible to reduce costs in this respect.

[Brief explanation of the drawing]

Figure 1 shows an apparatus for implementing an optimal filling system for compressed materials. Figure 2 is a plan view of the turntable. Figure 3 is also a front view. Figure 4 is a view in the direction of the ■ arrow in Figure 3. FIG. 5 shows the control flow of the compressed material filling system. In the figure, 1 Press part 2 Press outlet side roller conveyor 3 Compressed product refilling device 4 Turntable 5 200Q drum for storage 6 New drum replenisher 7 New 200Q drum for replenishment 8 Unloading cylinder 9 Unloading roller conveyor 10 Roller pedestal 11 Drum can Holding frame 12
Positioning cylinder 13 Turntable bearing 14 Roller follower 15 Reducer 16 Drive gear or higher

Claims (1)

[Claims] It has a turntable equipped with a roller pedestal for mounting a plurality of drums for storing compressed products, and on each of the roller pedestals is a spring-loaded drum that utilizes movement by a cylinder for supplying and discharging drums to the turntable. This system is equipped with a holding frame and fills the storage drum with compressed material whose volume has been reduced by a press, in which a plurality of drums are arranged on a roller pedestal on the turntable, and the turntable and a microcomputer are used together. Then, the drum can's own weight, filling weight, height limit value, minimum limit value, and weight and compression height of the compressed product are input into the microcomputer, and the optimal filling drum for each compressed product is selected and filled. This is an optimal filling system for compressed materials in high compression volume reduction processing equipment.