KR100737698B1 - Apparatus of removing for Hot particulate - Google Patents

Abstract

The present invention relates to a non-sticking high radioactive dust removal device contaminated in a shielding compartment for treating high radioactive material of nuclear power, wherein the high-radioactive dust generated in the hot cell after the nuclear test is first removed by a cyclone, and the bag filter and Since the secondary filter is removed by a filter case provided as a HEPA filter, it is possible to more effectively and continuously remove the non-sticking high radioactive dust generated on the inner surface of the hot cell and the surface of the device. According to the present invention, a filter and a collection box for removing radioactive dust can be exchanged and detached / attached by a manipulator, which is a remote device. By reducing the volume of secondary wastes such as vacuum cleaners, it is possible to prevent secondary environmental pollution, and the filter and collection box can be replaced remotely to promote the safety of the operator and extend the life of the device. The filter case provided with a bag filter and a HEPA filter can more effectively and continuously remove non-sticking high-radioactive dust generated on the inner surface of the hot cell and the surface of the device, thereby increasing the efficiency of removing dust. In order to provide a dust removal device, the technical configuration is high radioactivity of nuclear power And the non-stickiness contamination within the shielded compartment for processing quality in the radioactive dust removal device, carrying cases, which are mutually connected by a plurality of frames; A filter case provided at an upper predetermined position in the carrying case; A cyclone provided in place of the filter case, having an inlet conduit for introducing a gas containing high radioactive dust in one place, and having a vacuum pump for sucking gas to the other side; And a collecting box attached to a disc-shaped magnetic material provided below the cyclone and fixed at a position by a plurality of guide pins. Characterized in that comprises a.

Non-sticking high radiation dust, cyclone, vortex finder, bag filter, hepa filter, collection box

Description

Apparatus of removing for Hot particulate}

1 is a front perspective view schematically showing a non-sticking high radioactivity dust removal apparatus according to the present invention,

Figure 2 is a side perspective view schematically showing a non-sticking high radioactivity dust removal apparatus according to the present invention,

Figure 3 is a side view schematically showing a non-sticking high radioactivity dust removal apparatus according to the present invention,

Figure 4 is a side cross-sectional view schematically showing a non-sticking high radioactivity dust removal apparatus according to the present invention,

5 is a cross-sectional view schematically showing a filter case of a non-sticking high radioactivity dust removal apparatus according to the present invention;

6 is a view showing the collection efficiency of the simulated particles of different sizes through the cyclone of the non-sticking high radioactivity dust removal apparatus according to the present invention,

7 is a view showing the collection efficiency of the simulated particles having different inflow rate through the cyclone of the non-sticking high radioactivity dust removal apparatus according to the present invention,

8 is a view showing the collection efficiency of the simulated particles according to the shape and diameter of the cyclone vortex finder of the non-sticking high radioactivity dust removal apparatus according to the present invention,

9 is a view showing the collection efficiency of the simulated particles by installing the auxiliary cone in the cyclone of the non-sticking high radioactive dust removal apparatus according to the present invention.

       * Explanation of symbols for main parts of drawings *

1: non-sticking high radioactivity dust removal device,

10: carrying case, 11: transfer wheel,

30: filter case, 31: connector,

33: filter, 33a: bag filter,

33b: Hepa Filter, 35: Door,

50: cyclone, 51: inlet conduit,

53: vacuum pump, 55: magnetic material,

57: guide pin, 59: Vortex Finder,

70: collection box, 71: hanger.

The present invention relates to a non-sticking highly radioactive dust removal device contaminated in a shielding compartment for treating high radioactive materials of nuclear power, and more specifically, high-radioactive dust generated in a hot cell after a nuclear test is primarily removed by a cyclone. Secondary removal is performed by a filter case provided with a bag filter and a hepa filter, thereby effectively and continuously removing non-sticking high-radioactive dust generated on the inner surface of the hot cell and the surface of the device. The box can be exchanged and detached / removed by a manipulator, which is a remote device, thereby reducing the volume of secondary waste such as waste paper waste and waste vacuum cleaner, which are exposed to radiation when high radioactive dust is removed by conventional methods. Contamination can be prevented, and filters and collection boxes can be replaced remotely. Promote the safety of workers by eojim and is non-stickiness and which can extend the life of the apparatus of the radioactive dust removal device.

In general, during operation of a nuclear facility, the nuclear facility and its associated equipment are exposed to radiation, which can be contaminated with radiation and therefore need to be decontaminated periodically.

In particular, the hot cell (Hot Cell), a nuclear research facility, redox and crushing of spent nuclear fuel, cutting and destroying nuclear fuel, powdering, group separation and nuclear fuel metal conversion. Process and the like.

At this time, the inner surface such as the bottom surface and the wall surface of the hot cell and the surface of various devices installed therein are contaminated by hot particle generated during the research experiment, thereby increasing the radiation level in the hot cell.

Here, for the input and dismantling of the device, failure, repair, etc., an operator is sometimes put into the hot cell to periodically remove non-sticking and sticking highly radioactive dust contaminated on the inner surface of the hot cell and the surface of the device to lower the radioactivity level inside the hot cell.

Currently, high radioactive dust generated during experiments inside the hot cell and contaminated on the inner surface and the surface of the device is removed by wiping with a tissue dampened with alcohol or by inhalation with a vacuum cleaner.

However, it is not easy to completely remove high-contamination dust contaminated on the inner surface of the hot cell and the surface of the device by using the alcohol-coated tissue and vacuum cleaner. In case of wiping, waste paper waste occurs and safety problem occurs because the worker has to be put in and carry out the work.In case of removing high radioactive dust with a vacuum cleaner, the vacuum cleaner frequently breaks down due to the high radiation in the hot cell. In addition, since the filter inside the vacuum cleaner is difficult to replace with a remote controller, the life of the vacuum cleaner is shortened by using the vacuum cleaner for single use, and the pollutants are discharged, such as waste papers and the vacuum cleaner. By doing so, there was a problem that secondary environmental pollution could occur.

On the other hand, dust in the fluid that is induced by the cyclone and flows by the centrifugal force and frictional force is separated, and the separated dust is collected in the hopper located at the bottom of the cyclone, so that the collection efficiency is greater than 90% in the case of large dust (5 μm or more). In order to remove even small dusts, a dust removal apparatus has been proposed in which a filter is provided inside the cyclone to remove even 0.3 μm dust with an efficiency of 99.97% or more.

One such dust removal device is US Pat. No. 5,120,165.

The excavation system disclosed in the patent is to separate and collect the excavation in the air flow carried by two cyclones arranged up and down, and to separate the toxic gas or dust in the exhaust gas by a separate filter. However, it is not easy to replace and replace the filter installed in the cyclone, and these operations have caused problems for the safety of the operator because the operator has to proceed manually.

In addition, various methods have been sought to increase the dust collection efficiency of the cyclone, and for example, a dust removal device has been developed in which a spraying device is sprayed to spray water into the cyclone. An example is the microbial removal and air conditioning apparatus disclosed in US Pat. No. 4,295,343.

This device differs from the above mentioned excavation system in the field of application, but has the same conceptual concept in removing microorganisms or dust in the air.

However, by spraying water with a spray nozzle mounted therein, fine dust or microorganisms are attached to and removed from the inner wall of the cyclone, so that clean and moist air can be recycled to the room.

Another type of invention using a watering device is US Patent No. 4,976,210. The hazardous waste treatment apparatus disclosed in this patent is designed to remove impurity particles from the exhaust gas by spraying water on the baffle while generating a rotary airflow in the exhaust gas by a cyclone.

In addition, the air-carrying particle extraction device disclosed in US Patent No. 4,015,957 also uses a watering device, which is uniformly dispersed in the form of a spray, such as water in the air and cyclone chamber containing particles In order to remove the particles in the air by mixing with a porous particle collector.

On the other hand, there are other dust removal devices that increase the dust collection efficiency of the cyclone, such as a cyclone separator having a multi-vane gas inlet disclosed in US Patent No. 3,969,096 and a cyclone separator having a flow guide blade disclosed in US Pat. No. 4,344,538. .

These inventions have multiple vanes or guide blades attached to the inlet portion to guide the gas containing impurities introduced into the cyclone separator through the inlet to improve the efficiency of removing impurities from the gas.

In addition, the dust removal efficiency can be increased by making the dust contained in the fluid soluble and enlarging the dust, making the walls of the cyclone into various materials to react the dust, or making the cyclone wall double to rotate the outer wall. Various types of exhaust gas purifiers have been developed to remove dust from polluted exhaust gases by using cyclones.

However, the dust removal device as described above, when using a separate sprinkler, there is a concern that the generation of secondary pollutants due to the use of the liquid, there is a problem that increases another radioactive waste, and also inside the cyclone It is not easy to replace and replace the filter is installed, the operator's safety problems have arisen because these operations are performed manually by the operator.

In addition, in the case of installing a separate device, the manufacturing process is complicated, the number of work is increased, and thus the manufacturing cost is high, which is not economical, and it is difficult to easily apply to the basic cyclone dust removal device of the basic form. Also had.

The present invention is to solve the problems as described above, the high-radiation dust generated in the hot cell after the nuclear test is first removed by the cyclone, and secondly by the filter case provided with a bag filter and hepa filter It can be removed more effectively and continuously to remove the non-sticking high-radiation dust generated on the inner surface of the hot cell and the device surface, and the filter and the collecting box can be exchanged and detached / removed by the remote manipulator. By reducing the volume of secondary waste such as waste paper waste and waste vacuum cleaner, which are exposed to radiation when removing radioactive dust by conventional method, it can prevent secondary environmental pollution, and filter and collection box can be replaced remotely. Can improve the safety of the operator and extend the life of the equipment. , By the filter case it is provided with a cyclone and a bag filter and a HEPA filter non-stickiness and non-stickiness that can increase the efficiency of removal of radioactive dusts and an object thereof is to provide a radioactive dust removal device.

In order to achieve the object as described above, the present invention provides a non-sticking highly radioactive dust removal apparatus contaminated in a shielding compartment for treating high radioactive material of nuclear power, carrying case interconnected by a plurality of frames; A filter case provided at an upper predetermined position in the carrying case; A cyclone provided in place of the filter case, having an inlet conduit for introducing a gas containing high radioactive dust in one place, and having a vacuum pump for sucking gas to the other side; And a collecting box attached to a disc-shaped magnetic material provided below the cyclone and fixed at a position by a plurality of guide pins. Characterized in that comprises a.

Preferably, a connecting tube is provided on the upper part of the cyclone and the filter case, wherein the connecting tube is configured to supply gas to which the high radioactive dust having large particles are removed from the cyclone to the filter case.

Here, the vortex finder is extended to the lower portion of the connecting pipe drawn into the upper portion of the cyclone, the length of the vortex finder is formed of 0.5 × D (diameter of the cyclone).

On the other hand, a plurality of filters are stacked in the vertical direction inside the filter case.

Each filter is provided as a bag filter and a HEPA filter, and the bag filter and the HEPA filter are stacked and sequentially stacked at predetermined intervals in the vertical direction.

Here, each of the filters is provided in the form of a cartridge made replaceable.

On the other hand, the front of the filter case is provided with a door that can be opened and closed.

In addition, transport wheels which are movable at each end of the lower surface of the carrying case are respectively installed.

In addition, a collection box provided at a lower portion of each filter and a cyclone provided in the filter case may be exchanged and replaced remotely by a remote control device.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 is a front perspective view schematically showing a non-sticking high radioactivity dust removal apparatus according to the present invention, Figure 2 is a side perspective view schematically showing a non-sticking high radioactivity dust removal apparatus according to the present invention, Figure 3 Figure 4 is a side view schematically showing a non-fixed high radioactivity dust removal apparatus, Figure 4 is a side cross-sectional view schematically showing a non-fixed high radioactivity dust removal apparatus according to the present invention, Figure 5 is a non-fixed high radioactivity dust removal according to the present invention A cross-sectional view schematically showing a filter case of the device.

As shown in the figure, the non-sticking highly radioactive dust removal apparatus 1 according to the present invention is composed of a carrying case 10, a filter case 30, a cyclone 50 and a collecting box 70.

The carrying case 10 is interconnected by a plurality of frames, each of which is provided with transport wheels 11 at each end of the lower side thereof, and the transport case 10 is made movable by the transport wheels 11.

The filter case 30 is provided at an upper predetermined position in the carrying case 10, and a plurality of filters 33 are stacked in the vertical direction.

Here, each filter 33 provided in the filter case 30 may include a bag filter 33a and a hepa filter 33b, and a hepa filter, and the bag filter 33a and the hepa filter ( 33b) are spaced apart by a predetermined interval in the vertical direction, and each one is provided in sequence.

Each filter 33 is generally applied in the form of a cartridge to enable remote exchange and replacement of a new filter 33 after use via a remote control device (Manipultor) used in the hot cell.

In one embodiment of the present invention, the filter 33 provided inside the filter case 30 is provided as a bag filter 33a and a hepa filter 33b, but only as a bag filter 33a or a hepa filter 33b. It is also possible to be provided.

In addition, in the exemplary embodiment of the present invention, the bag filter 33a and the HEPA filter 33b are stacked in the filter case 30 so as to be spaced apart at predetermined intervals in the vertical direction. It is also possible that the bottom surface is laminated so as to abut each other.

In addition, in the exemplary embodiment of the present invention, one bag filter 33a and one hepa filter 33b are provided, but the number of the bag filter 33a and the hepa filter 33b is not limited thereto. Do.

On the other hand, the front of the filter case 30 is provided with a door 35 that is opened and closed, the door 35 is automatically opened and closed by a remote control device generally used in the hot cell. It is preferable to make.

The cyclone 50 is provided in place of the filter case 30, and has an inlet conduit 51 for introducing the contaminated gas present in the hot cell in one place, the gas through the inlet conduit 51 on the other side It has a vacuum pump 53 for sucking. That is, the cyclone 50 is provided in the front position of the filter case 30, the inlet conduit 51 for introducing a gas containing high radioactive dust in the hot cell to one side is provided to be deflected to one side. On the other side, there is provided a vacuum pump 53 for sucking gas containing high radioactive dust through the inlet conduit 51.

Here, the connecting pipe 31 is speeched to the upper portion of the cyclone 50 and the upper portion of the filter case 30, the connecting tube 31 is a gas from which large particles are removed from the cyclone 50 Is provided to the upper portion of the filter case (30).

On the other hand, the vortex finder 59 (Vortex finder) is formed in the lower portion of the connecting pipe 31 is introduced into the upper portion of the cyclone (50). That is, a predetermined portion of the connection pipe 31 drawn into the upper portion of the cyclone 50 from the end of the connection pipe 31 mutually speaking to the cyclone 50 and the filter case 30 is a vortex finder ( 59).

Here, the length of the vortex finder 59 is preferably manufactured to 0.5 × D (diameter of the cyclone), it appears that the removal efficiency of the high radioactive dust at this time is the highest.

By the structure and configuration as described above, the cyclone 50 inhales the gas including the high-radioactive dust sucked through the inlet conduit 51 by the suction force of the vacuum pump 53, and includes the high-radioactive dust sucked The gas to be made is such that high radioactive dust is collected downward by centrifugal force generated by the swirl flow of the cyclone 50.

The collecting box 70 is configured to collect high radioactive dust that is separated from the gas by the centrifugal force generated by the swirl flow of the cyclone 50 and collected below.

Here, the collecting box 70 is attached to the disc-shaped magnetic body 55 is installed in the lower portion of the cyclone 50, the position is fixed by a plurality of guide pins 57 are generally used in the hot cell The remote control device (Manipulator) is made to be easily remotely separated from the cyclone (50).

In addition, a plurality of separate hooks 71 are provided on each side of the collection box 70 so that the filter case may be detachable / attached by a remote control device generally used in a hot cell. It is preferable that each filter 33 provided in the form of a cartridge in 30 is also replaceable.

Thus, the collection box 70 and each filter 33 is made to be replaced and replaced periodically, for this purpose, the remote control device for each filter 33 of the cartridge type provided in the filter case 30 In order to replace or replace, or to separate or combine the collecting box 70 in the cyclone 50 is made to include a robot hand, tong-shaped transport mechanism, remote driver, hook-shaped hook mechanism and the like.

In this way, the filter 33 and the collection box 70 in the filter case 30 can be exchanged and detached / attached, thereby enabling the worker to work through a remote control device generally used in the hot cell. There is no need to work at, which can improve worker stability and work efficiency.

Hereinafter, the manufacturing process of the non-fixed high radioactivity dust removal apparatus according to the present invention and the non-fixed high radioactivity dust removal apparatus will be described.

First, the non-sticking highly radioactive dust removal device 1 is manufactured to a size of 1 × 1 × 1m or less in consideration of the size of the hot cell and the size of the inlet in the nuclear facility.

That is, since the input port of the hot cell is approximately 1 × 1m, and the size of the hot cell is 2.0 to 23.7L × 1.5 to 3.0L × 3.5 to 6.0H, the high radioactive dust treatment apparatus 1 according to the present invention is introduced into the hot cell. It is preferable to produce the size below 1x1x1m.

The bag filter 33a and the hepa filter 33b, which are installed in the filter case 30 of the non-sticking highly radioactive dust removal device 1, are manufactured in the form of a cartridge, so that they can be used at chemical or high temperature. Manufactured to be applicable to incinerators and dust collectors.

Here, the bag filter 33a and the hepa filter 33b are configured to secondarily remove high radioactive dust of small particles from a gas in which the high radioactive dust having large particles is first removed after passing through the cyclone 50. The hepa filter 33b is configured to remove high radioactive dust of 0.3 μm or less passing through the bag filter 33a.

On the other hand, the material of the non-sticking high radioactive dust removal device 1 is made of STS 304, which is mostly resistant to radiation.

In addition, the vacuum pump 53 is used to suck high radioactive dust into the cyclone 50, and the capacity of the vacuum pump 53 is within a range capable of maximizing particle removal efficiency of the cyclone 50. It is desirable to decide.

In addition, the collecting box 70 is installed below the cyclone 50, and is generally manufactured to be remotely separated from the cyclone 50 by a remote control device used in a hot cell. That is, the collection box 70 is attached to the disk-shaped magnetic body 55 which is located under the cyclone 50, it is made to be separated more easily by being made to fix the position with a plurality of guide pins (57).

As described above, the non-sticking highly radioactive dust removing apparatus 1 according to the present invention can reduce the capacity of filter waste and various wastes which are saturated and discarded after removing the high radioactive dust by using a conventional vacuum cleaner by the cyclone 50. In addition, it can remove more than 80% of the high radioactive dust in the hot cell.

The non-sticking highly radioactive dust removal device 1 having the structure and configuration as described above is first moved manually or automatically through the transfer wheels 11 provided at each end of the lower surface of the carrying case 10 to be inside the hot cell. Is put into.

Here, as a result of pollution characteristics and investigations inside the hot cell, the high radiation generated during the nuclear fuel test is the main species of dust such as uranium and zylcarloy, the particle size is 0.2-30 μm, and the internal radiation is about 4 × 10 ⁶ Bq / High in cm ² , high-radiation dusts are distributed and remain on the inner surface of the hot cell, on the walls and on the surface of the device.

The non-sticking high radioactive dust removal device 1 introduced into the hot cell is sucked gas containing the high radioactive dust remaining inside the hot cell to the inlet conduit 51 which is addressed to the cyclone 50 using the vacuum pump 53. do.

The gas containing the high-radioactive dust sucked into the inlet conduit 51 through the vacuum pump 53 is introduced into the cyclone 50 and rotates with the centrifugal force generated by the swirl flow. The gas, which is concentrated at the lower part of the bottom surface and has high particle size, is introduced into the filter case 30 through the vortex finder 59 and the connection pipe 31.

That is, the gas containing the high-radiation dust sucked through the inlet conduit 51 is provided in place of the cyclone 50, the cyclone 50 is introduced through the inlet conduit 51 is provided to be deflected to one side It rotates in a helical direction from the inside of the upper side, thereby concentrating high radioactive dust particles with a large particle inside the cyclone (50), the gas from which the large particles of large radioactive dust is primarily removed by the cyclone (50) It is introduced into the upper portion of the filter case 30 through the (31).

Here, the high radioactive dust particles are concentrated to the inner bottom of the cyclone 50 is introduced into the collecting box 70, the collecting box 70 is loaded with a large radioactive dust particles is a remote control device (Manipulator) By inserting or holding the hook portion 71 is periodically replaced and replaced to be removed. That is, the collection box 70 in which the high radioactive dust is loaded is disposed in the radioactive waste container (not shown) by releasing the coupling of the cyclone 50 after the remote control device inserts or grips the hanger 71.

On the other hand, the gas from which the high radioactive dust having a large particle is removed flows into the upper part of the filter case 30 and is then filtered secondarily while passing through each filter 33 provided above and below the inside of the filter case 30. do. That is, the gas flowing into the upper portion of the filter case 30 in order to remove the small particles of high radioactive dust present in the gas from which the large particles of high radioactivity are removed is stacked vertically in the filter case 30. Secondary filtration is performed by the bag filter 33a and the hepa filter 33b provided to be spaced apart from each other by a predetermined interval.

As described above, the gas filtered through the filter case 30 is discharged to the outside.

Here, each filter 33 provided in the filter case 30 is replaced by a filter 33 formed in the form of a cartridge after the door 35 provided at the front thereof by a remote control device is opened.

In order to measure the high radioactive dust removal ability using the non-sticking high radioactive dust removal apparatus according to the present invention, the following experiment was performed using simulated particles.

That is, as an experiment to measure the collection efficiency according to the simulated particles of different sizes, when the fine particles having a different size from 1㎛ to 10㎛ introduced into the cyclone of the high radioactive dust removal device 1 according to the present invention The collection efficiency in the cyclone is shown as shown in FIG.

At this time, the length of the vortex finder drawn in from the top of the cyclone was 7.2, and the inflow velocity of the fine particles was kept constant at 15 m / sec.

As a result of the experiment, as in the previous experiments, the larger the particle size, the higher the collection efficiency. That is, when the size of the simulated particle is 5㎛ or more, the collection efficiency was found to be 80% or more, and when the size of the simulated particle was smaller than 2.5㎛, the collection efficiency was found to decrease at a larger rate.

At this time, when the simulated particles of 2.5㎛ was used, the collection efficiency was 77.7%.

On the other hand, in order to increase the effect of the collection efficiency on the parameters to use the particles of the size of 2.5㎛ selected in the above experiment, set the vortex finder length flowing into the cyclone to 7.2cm, and then simulated particle inflow rate 10 , 12, 15, 17, 20m / sec collection efficiency in the cyclone of the high radioactive dust removal apparatus according to the present invention was shown as shown in FIG.

As a result of the experiment, it can be seen that the particle inflow rate has a significant effect on the collection efficiency. That is, when the simulation particle inflow rate is 12m / sec or more, it can be seen that the collection efficiency is 70% or more.

However, it can be seen that when the inflow velocity is 17 m / sec or more, the increase in collection efficiency is slowed down.

According to the above experimental results, the inflow rate is not too fast and the collection efficiency is also suitable 15 m / sec as the inflow rate, and the size of the simulated particle is 2.5 μm to determine the optimal length of the vortex finder that is introduced into the cyclone. The experiment to select was performed.

At this time, the length of the vortex finder introduced into the inside of the cyclone was changed to 4, 6, 7.2, 10, 13 cm, and the collection efficiency was measured.

As a result of the measurement, as shown in FIG. 8, it can be seen that the collection efficiency also increases as the length of the vortex finder increases to 4, 6, and 7.2 cm into the cyclone.

However, when the length of the vortex finder is increased to 10 and 13 cm beyond 7.2 cm, it can be seen that the collection efficiency gradually decreases.

Therefore, it can be seen that the maximum collection efficiency is shown when the length of the vortex finder is 7.2 cm.

On the other hand, when a separate auxiliary cone is installed between the cyclone and the collecting box, the increase rate of the collection efficiency by the auxiliary cone was measured.

As shown in FIG. 9, when the simulated particles having a size of 2.5 μm are used, the length of the vortex finder is 7.2 cm, and the simulated particle inflow rate is changed to 5, 7, 10, 13, 15 m / sec. When the auxiliary cone was attached, the collection efficiency increased by about 2% in all speed ranges.

In other words, it can be seen that in installing the auxiliary cone between the cyclone and the collecting box has little effect on the collection efficiency compared to the case where the auxiliary cone is not installed.

According to the structure and the experimental result as described above, the high radioactive dust removal device 1 according to the present invention primarily filters the gas having high radioactive dust in the hot cell by the cyclone 50, and filters the filtered gas in the filter case. It is made to be filtered by the secondary secondary 30 to maximize the purifying power of the gas contaminated in the hot cell, each of the cartridge type provided in the collecting box 70 and the filter case 30 to collect high radioactive dust The filter 33 is made remotely replaceable by the remote control so that no operator input into the hot cell is required for other work.

While the invention has been shown and described with respect to particular embodiments, those skilled in the art will recognize that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the appended claims. Anyone can easily know.

As described above, according to the present invention having the above configuration, the high-radioactive dust generated in the hot cell after the nuclear test is firstly removed by a cyclone and secondly by a filter case provided with a bag filter and a hepa filter. It can be removed more effectively and continuously to remove the non-sticking high-radiation dust generated on the inner surface of the hot cell and the device surface, and the filter and the collecting box can be exchanged and detached / removed by the remote manipulator. By reducing the volume of secondary waste such as waste paper waste and waste vacuum cleaner, which are exposed to radiation when removing radioactive dust by conventional method, it can prevent secondary environmental pollution, and filter and collection box can be replaced remotely. To ensure the safety of the operator and to extend the life of the equipment. In addition, the filter case provided with a cyclone, a bag filter, and a hepa filter may increase the removal efficiency of non-sticking high-radioactive dust.

Claims (9)

In the non-sticking high radioactive dust removal device contaminated in the shielding compartment for processing high radioactive material of nuclear power, A carrying case 10 interconnected by a plurality of frames; A filter case 30 provided at an upper predetermined position in the carrying case 10 and having a plurality of filters 33 stacked therein in a vertical direction; The cyclone provided in place of the filter case 30, having an inlet conduit 51 for introducing a gas containing high radioactive dust in one place, and a vacuum pump 53 for sucking the gas to the other side ( 50); And And a collecting box 70 attached to a disc-shaped magnetic material 55 provided at a lower portion of the cyclone 50 and fixed to a position by a plurality of guide pins 57. Each filter 33 stacked in the filter case 30 and the collecting box 70 provided under the cyclone 5 are exchanged and replaced remotely by a remote controller in a hot cell. Non-sticking high radioactivity dust removal device, characterized in that made possible. The method of claim 1, The connection pipe 31 is provided on the upper portion of the cyclone 50 and the filter case 30, the connection pipe 31 is a gas from which the high-radioactive dust particles are large in the cyclone 50 is removed Non-sticking high radioactivity dust removal device, characterized in that made to supply to the filter case (30). The method of claim 2, Non-sticking high-radiation dust removal device is characterized in that the vortex finder (59) is formed to extend so that the end of the connecting pipe 31 is introduced into the interior of the cyclone (50). The method of claim 3, The vortex pinter (59) has a length of 0.5 × D (diameter of the cyclone), characterized in that the non-sticking high radioactivity dust removal device. The method of claim 1, Each of the filters 33 is provided as a bag filter 33a and a hepa filter 33b, and the bag filter 33a and the hepa filter 33b are stacked and sequentially stacked at predetermined intervals in the vertical direction. Non-sticking high radioactive dust removal device. The method of claim 1, Non-sticking high radioactivity dust removal device, characterized in that the filter 33 is provided in the form of a cartridge that is interchangeable. The method of claim 1, Non-sticking highly radioactive dust removal device, characterized in that the front of the filter case 30 is provided, the door 35 is formed to open and close. The method of claim 1, Non-sticking high-radiation dust removal device, characterized in that each of the transport wheels (11) are formed to be movable at each end of the lower side of the carrying case (10). The method of claim 1, The non-sticking high radioactive dust removal device is a non-sticking high radioactivity dust removal device, characterized in that the width × length × height is within 1m × 1m × 1m.

Images