KR200325657Y1 - Mobile chamber for removing contamination - Google Patents

Abstract

The present invention relates to a mobile decontamination chamber. The object of the present invention is to perform surface decontamination in all directions by rotating the contaminated equipment, equipment, and tools by remote operation while controlling the angle of the decontamination nozzle in an isolated space. At the same time, it is to provide a mobile decontamination chamber that can suck and store decontaminated dust to prevent the spread of contaminated dust, shorten the decontamination work time, minimize the radiation exposure of the operator, and promote the safety of the operator. .

The present invention is provided with a decontamination spray nozzle, a spray nozzle adjusting member for moving the decontamination spray nozzle in three axes and adjusting the angle of the spray nozzle, a rotating table member mounted with a decontamination object and rotated by a motor, and the rotating table. Located in the lower part of the member and the injection nozzle adjusting member, a dust suction member for collecting the contaminated dust, the spray nozzle control member, the rotary table member and the dust suction member is installed, the upper side of the rectangular chamber-like chamber member is sealed It is configured to include, to control the angle and position of the decontamination spray nozzle, and rotate the decontamination object forward decontamination of the surface of the decontamination object at the same time, a mobile decontamination chamber that can collect / store the contaminated dust removed In providing.

Description

Mobile chamber for removing contamination

The present invention relates to a mobile decontamination chamber, which rotates an apparatus, tool, or equipment contaminated with radioactive material, radiated dust, dust waste, contaminated oil, etc. in an isolated space, and adjusts the angle of the spray nozzle. The present invention relates to a mobile decontamination chamber which decontaminates the surface in all directions and can suck and store the decontaminated dust and dust waste in the chamber.

If you want to decontaminate polluted equipment, equipment and tools used in radioactive material handling facilities, you can not decontaminate yourself because of the radioactive environment, so decontamination solution and decontamination agent (paper, cotton, cloth, etc.) can be used by remote means. The decontamination work was performed by putting the decontamination solution into the radioactive environment, and then remotely using the master / slave manipulator or a remote handling tool and soaking the decontamination solution in the decontamination agent. In addition, only when the radioactive level falls below the worker's access level after decontamination, the worker wearing a special protective suit is put in and the decontamination work is performed by directly wiping the surface of the contaminated equipment, equipment and tools by applying decontamination solution to the decontamination agent. Was performed.

However, the decontamination method as described above has a problem that a large amount of decontamination solution and decontamination agent are used, thereby generating a large amount of secondary radioactive waste and having to handle and dispose of such waste again. In order to decontaminate, the worker has to go directly into the work space, and thus the worker may be exposed to radiation, thereby causing various safety problems.

The remote decontamination device used in hot cells that handle high radioactive materials such as spent nuclear fuel is a method of using dry ice pellets as a spray medium. The spent fuel granules, dust, and radioactive dust are produced without generating secondary waste. And it is used for remote decontamination of equipment, devices, tools, etc. contaminated with fine dust waste. However, since the remote decontamination apparatus is inaccessible to the inside of the hot cell because of high radioactivity during the operation of the hot cell, the remote decontamination apparatus has to be installed in the hot cell before operation of the hot cell (before the hot cell is contaminated), and thus there is a difficulty in utilization. In addition, when decontaminating the contaminated equipment, equipment, tools located in the hot cell by the remote decontamination device, only one side should be decontaminated, so if you want to decontaminate another side and the upper and lower surfaces, by separate means After rotating the contaminated equipment, equipment and tools, the surface must be decontaminated by the remote decontamination apparatus, which is very cumbersome, the decontamination rate is low, the decontamination time is long, and the contaminated dust removed after decontamination is hot Since it is interspersed with, there have been various problems such as having to remove it by a separate means.

The present invention has been made in consideration of the above problems, and its object is to carry out surface decontamination in all directions by rotating the contaminated equipment, equipment and tools by remote operation while controlling the angle of the decontamination nozzle in an isolated space. At the same time, it is to provide a mobile decontamination chamber that can inhale and store the decontaminated dust to prevent the spread of the contaminated dust, shorten the decontamination work, and improve the safety of the operator.

The present invention is provided with a decontamination spray nozzle, a spray nozzle adjusting member for moving the decontamination spray nozzle in three axes and adjusting the angle of the spray nozzle, a rotating table member mounted with a decontamination object and rotated by a motor, and the rotating table. Located in the lower part of the member and the injection nozzle adjusting member, a dust suction member for collecting the contaminated dust, the spray nozzle control member, the rotary table member and the dust suction member is installed, the upper side of the rectangular chamber-like chamber member is sealed It is configured to include, to control the angle and position of the decontamination spray nozzle, to rotate the decontamination object in the forward direction and at the same time, to provide a removable decontamination chamber that can collect / store the removed contaminated dust have.

Figure 1 is a side view showing a configuration according to the present invention

2 is a front view showing a configuration according to the present invention

Figure 3 is a plan view showing a configuration according to the present invention

Figure 4 is an exemplary view showing the front and rear movement structure and the injection nozzle angle control structure of the present invention injection nozzle adjustment member

5 is an exemplary view showing a vertical movement structure of the present invention injection nozzle adjustment member

6 is an exemplary view showing a moving structure before and after the injection nozzle control member of the present invention

7 is an exemplary view showing the configuration of the subject innovation rotary table member

8 is an exemplary view showing a cross section of the vertical adjustment rod according to the present invention

* Explanation of symbols for the main parts of the drawings

(10): rotary table member (11): table

(11a): Table hole 11b: Support pin

(12): connecting rod (13): rotating shaft

14: rotating shaft housing 15: housing support

(16): main support (17): worm gear housing

(18): worm gear (19): working motor

(20): injection nozzle adjusting member (21): angle adjusting unit

(22): horizontal moving part (23): vertical / rear moving part

(30): dust suction member 31: hopper portion

(32): Filter part 33: Blower part

(34): sliding rail (40): chamber member

(41): body part 42: door part

(43): pneumatic cylinder (44): buffer

(45): air inlet (46): wheels

(47): Work Gloves (48,49): Fixture

(50): decontamination spray nozzle (211): support

(212): Worm Gear (212a): Worm Axis

(212b): Worm wheel (213): Angle adjusting handle

(214): nozzle stand (221): connecting rod

(222): Horizontal slider (223): Horizontal ball screw

(224): horizontal guide rod (225): support

(226): Horizontal movement handle (231): Vertical guide rod

(232): vertical ball screw (233): upper support

(233`): Lower support (234): Front / rear handle

(234`): Vertical Handle (235): Gearbox

(235`): Bevel Gears (236): Before and After Guide Rods

(237): Before and after ball screw (238): Vertical adjusting rod

(239): guide rod support

1 is a side view showing a configuration according to the present invention, Figure 2 is a front view showing a configuration according to the present invention, Figure 3 is a plan view showing a configuration according to the present invention, the present invention Rotates the decontamination object by the rotary table member 10, moves the decontamination spray nozzle 50 up / down / left / right by the spray nozzle adjusting member 20 and simultaneously adjusts the decontamination spray angle. The decontaminated dust is sucked and stored / processed by the dust suction member 30 to decontaminate radioactively contaminated equipment / tool / apparatus in the sealed chamber member 40.

The chamber member 40 is to prevent scattering of the polluted dust removed during decontamination, the injection nozzle adjusting member 20, the rotary table member 10 and the dust suction member 30 is installed therein, the rectangular parallelepiped shape It consists of a body portion 41 and a door portion 42 hinged to the body portion 41 and rotated 90 to 150 ° around the hinge coupling portion, the door portion 42 The upper part is hinged to the body part 41 and is operated by two pneumatic cylinders 43 respectively installed on both sides of the body part 41. At this time, the door portion 42 is in the range of about ⅓ to ½ of the upper volume of the body portion 41, and has an inverted quadrangular shape as shown in FIG.

In addition, the buffer unit 44 and the air inlet 45 for introducing air into the body portion 41 to alleviate the impact when the door portion 42 is opened, respectively installed on one side of the upper surface of the body portion 41 The door part 42 and the body part 41 are completely sealed when they are coupled (when closed).

That is, the chamber member 40 is hingedly coupled to the upper side of the upper portion of the door portion 42 and the body portion 41, the door portion 42 by the pneumatic cylinder 43 to the hinge coupling portion as the center It is opened and closed within an angle range of about 90 to 150 degrees in the upward direction.

In addition, the upper part of the door part 42 and the body part 41 is made of a transparent material such as a transparent acrylic plate so as to check the decontamination state from the outside and to facilitate decontamination, the body part 41 A plurality of wheels 46 are installed on the lower surface to facilitate movement, and a work glove 47 into which a worker's hand is inserted to be adjusted by hand by the injection nozzle adjusting member 20 on one side of the body portion 41. Is installed.

Figure 4 is an exemplary view showing the front and rear movement structure and the injection nozzle angle adjustment structure of the present invention injection nozzle adjustment member, Figure 5 is an illustration showing the vertical movement structure of the injection nozzle adjustment member of the present invention, Figure 6 is the present invention injection As an exemplary view showing the movement structure of the nozzle adjustment member before and after, the spray nozzle control member 20 is installed with a decontamination spray nozzle 50 and manually adjusts the angle of the decontamination spray nozzle 50 by a gear. The angle adjusting unit 21 and the angle adjusting unit 21 are connected / installed, and the horizontal moving unit 22 and the horizontal moving unit 22 for horizontally moving the decontamination spray nozzle 50 to the left and right. It is connected / installed and is composed of a vertical / front and rear moving unit 23 for vertical movement and forward and backward movement of the decontamination spray nozzle 50 up / down / front / back.

The angle adjusting unit 21 is a support 211 connected to / installed in the horizontal moving unit 22, a worm gear 212 installed in the support 211, and a worm shaft of the worm gear 212 ( 212a) is connected to the angle adjusting handle 213 positioned on the support 211, the worm wheel 212b of the worm gear connected to the nozzle stage 214 is inserted / installed the desalination spray nozzle (50) The nozzle stem 214 is rotated in the same direction with respect to the rotation direction of the worm wheel 212b by the rotation of the worm gear 212 according to the operation of the angle adjusting handle 213. At this time, the worm gear 212 is supported by a bearing in the support 211.

The horizontal moving part 22 is a connecting rod 221 integrally connected / installed to the support 211 of the angle adjusting unit, a horizontal slider 222 fixedly installed at the end of the connecting rod 221, and the horizontal slider ( Horizontal ball screw 223 is installed, the horizontal ball screw 223 is installed on the upper and lower horizontal guide rod 224 for guiding the horizontal slider 222 and the horizontal ball screw 223 is It is composed of a support 225 bearing is supported and both ends of the horizontal guide rod 224 is fixed / connected, and a horizontal movable handle 226 is connected to the horizontal ball screw 223 is installed on one side of the support 225 The horizontal ball screw 223 is rotated by the operation of the horizontal moving handle 226, and the horizontal slider 222 is horizontally left / right along the horizontal guide rod 224 by the rotation of the horizontal ball screw 223. Moved to the left / right angle adjusting unit 21 connected to the horizontal slider 222 by the connecting rod 221 It is to be moved horizontally.

The vertical / front and rear moving parts 23 are positioned between the vertical guide rods 231 inserted and penetrated at both ends of the support 225 of the horizontal moving part, and one side of the support 225 is positioned between the vertical guide rods 231. Connected / installed vertical ball screw 232, the upper end of the vertical guide rod 231 is fixed / supported, the upper support 233 bearing the upper end of the vertical ball screw 232, and the vertical guide A lower support 233` on which the lower end of the rod 231 is fixed / supported, and a lower end of the vertical ball screw 232 is bearing-supported, and is connected to the lower end of the vertical ball screw 232 and lower support 233`. Gear box 235 is installed on one side of the lower surface of the), the front and rear guide rods 236 are respectively inserted / through both ends of the lower support 233` to be parallel to the connecting rod 221, and the front / Positioned between the guide rods 236 and the front and rear ball screw 237, the lower support 233` is connected / installed, and Vertical adjustment rod 238 located between the front and rear ball screw 237 and one side front and rear guide rods 231 and coupled to the gear box 235, and both ends of the front and rear guide rods 236. Guide rod support 239 fixed / supported respectively and bearing the front / rear ball screw 237 and the vertical adjustment rod 238 and fixed to the body portion 41 of the chamber member 40 by the fixing member 48. And, before and after the guide rod support 239 and the body portion 41 through the protruding to the outside of the chamber member 40 before and after the ball screw 237 and the vertical adjustment rod 238 are respectively installed Bevel gear 235` is composed of / after the movement handle 234 and the vertical movement handle (234`), respectively connected to the vertical ball screw 232 and the vertical adjustment rod 238 in the gear box 235. ) Is installed. At this time, the vertical ball screw 232 is fixed integrally to the center of one side of the bevel gear 235`, the vertical adjustment rod 238 is installed to penetrate another gear center of the bevel gear 235` have.

When the vertical / rear movement unit 23 configured as described above rotates the vertical movement handle outside the chamber member 40, the bevel gear in the gearbox is operated by the rotation of the vertical adjustment rod, and the vertical movement is performed by the operation of the bevel gear. The ball screw is rotated, and the horizontal support is vertically moved along the vertical guide rod by the rotation of the vertical ball screw.

In addition, when the front / rear movement handle 234 is rotated outside the chamber member 40, the lower support 233 ′ is moved along the front / rear guide rods 236 by the operation of the front / rear ball screws 237. It moves before and after.

At this time, the vertical adjustment rod 238 has a cross-section as shown in FIG. 'It has a shape, and the gear center of one side of the bevel gear 235` coupled thereto is also configured to have the same shape as the external shape of the vertical adjustment bar 238, by the front / rear movement handle 234 When the front and rear movement of the lower support 233`, the bevel gear 235` installed in the gear box 235 is moved forward and backward along the outer surface of the vertical adjustment rod 238, the vertical adjustment rod 238 Bevel gear 235` is rotated by the outer surface shape of the vertical adjustment bar 238 during rotation / operation.

In addition, the outer surface shape of the vertical adjustment rod 238 is capable of moving forward and backward along the outer surface of the bevel gear 235`, it has a polygonal shape that can be rotated integrally with the bevel gear 235` during rotation. You may also do it.

Figure 7 shows an exemplary view showing the configuration of the subject innovation rotary table member, the rotary table member 10 is a table 11 on which the decontamination object is placed, and a connecting table installed in the lower center of the table 11 ( 12), the rotary shaft 13, the end of which is integrally connected to / installed on the connecting table 12, the rotary shaft housing 14 into which the rotary shaft 13 is inserted / installed, and the rotary shaft housing 14 supports the bearing. A housing support 15 to be provided, a main support 16 to which the housing support 15 is installed and connected / fixed to the chamber member 40, and a worm gear housing to be fixed / installed under the main support 16. 17), the worm gear 18 is installed in the worm gear housing 17 and one end of the rotary shaft 13 is connected, and the worm gear 18 is installed on one side of the worm gear housing 17 to operate the worm gear 18. It consists of a working motor 19 to make, the table 11, the connecting table 12, the rotating shaft 13 The worm wheel of the worm gear 18 connected to the rotary shaft housing 14, the housing support 15, the main support 16, the worm gear housing 17, and the rotary shaft 13 has the same center line.

In addition, the table 11 has a plurality of holes (11a) through / formed so that the contaminated dust removed during the decontamination operation can be easily moved in the downward direction, so that the lower surface of the decontamination object during the decontamination operation to facilitate decontamination A plurality of support pins 11b having a predetermined height are installed. That is, the decontamination object is placed on the plurality of support pins 11b installed on the table.

In the rotary table member 10 configured as described above, the worm gear 18 is operated by the operation of the operating motor 19, the rotary shaft 13 is rotated by the worm gear 18, and the rotary shaft 13 is rotated. The table 11 is rotated by the rotation of the table 11 to rotate the decontamination object placed on the support pin 11b of the table.

The dust suction member 30 is a suction process of contaminated dust generated during decontamination, and the chamber is positioned below the injection nozzle adjusting member 20 and the rotary table member 10 as shown in FIGS. 1 and 2. The hopper part 31 connected to the body part 41 in the body part 41 of the member 40, the filter part 32 connected / installed under the hopper part 31, and the filter part. And a blower portion 33 connected to the 32, and a hepa filter (not shown) is built in the filter portion 32, and contaminated dust transferred by the blower portion 33 is a hepa filter. Air collected in the filter part 32 and conveyed together with the contaminated dust is transported to the outside via the blower part 33 via the HEPA filter.

In addition, the filter part 32 is connected / installed in the chamber member 40 by the sliding rail 34, so that when the dust is collected in the filter part 32 or when the filter part 32 is installed, Since it slides by the sliding rail 34, it is possible to separate / replace the filter part 32 with little force.

In addition, the chamber member 40 is separated from the upper and lower by the hopper 31 of the dust suction member 30, the dust suction member 30 is installed in the lower, the dust suction member ( A plurality of opening and closing doors (not shown) are installed at the lower portion of the chamber member 40 provided with 30).

In order to decontaminate equipment / tool etc. contaminated with radioactivity by using the present invention configured as described above, first open (open) the door part of the chamber member by a pneumatic cylinder, and the table top of the rotary table member (support pin upper part). ), The decontamination object is placed, and then the door part of the chamber member is turned off (closed) again. When the door part is opened, the door part to be opened comes into contact with the shock absorber, thereby mitigating impact and completing the opening.

When the decontamination object is located in the chamber member as described above, the up / down / front / rear position of the spray nozzle is adjusted by the vertical movement handle and the front / rear movement handle installed on one side of the chamber member, and the work gloves installed on one side of the chamber member. Manual control of the horizontal and horizontal movement handles of the spray nozzles to adjust the spray angle by adjusting the left and right positions and angles of the spray nozzles, operating the dust suction member, and then decontaminating the decontamination object through the spray nozzles. . At this time, when decontamination of one side of the decontamination object is completed, the spray nozzle adjusting member and the rotating table member are operated to rotate the position and angle of the spray nozzle and rotate the decontamination object, and then decontaminate the decontamination object through the spray nozzle. In addition, the present invention may be decontaminated while rotating the decontamination object.

At this time, an air inlet is installed in the upper portion of the chamber member so that air can be introduced into the chamber member, and a vacuum state is not generated in the upper portion of the chamber member due to the suction force according to the operation of the dust suction member. By the operation of the dust suction member is not leaked to the outside through the air inlet to be transported / stored in the filter portion of the dust suction member.

After the collection of contaminant dust in the filter part is completed by repeating the above operation, the filter part is separated from the chamber member by using a sliding rail and then processed, and the treated filter part or another filter part is moved into the chamber member. Move along and insert / install.

The present invention is not limited to the above-described specific preferred embodiments, and any person having ordinary skill in the art to which the present invention pertains may make various modifications without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

As such, the present invention is designed to decontaminate decontamination objects such as equipment and tools contaminated with radioactivity in a confined space, and to collect the removed contaminant dust, thereby facilitating decontamination work and spreading the contaminated dust. This prevents the worker from being exposed to radiation, and can promote worker safety.

In addition, since the decontamination object is rotated and decontaminated, separate equipment for changing the position of the decontamination object is unnecessary, and can be decontaminated in all directions, thereby reducing the economic burden.

In addition, since the angle and position of the decontamination spray nozzle are adjusted, all the fine parts of the decontamination object can be decontaminated, and more perfect decontamination work can be performed.

Claims (5)

An angle adjusting unit for inserting / installing a spray nozzle and manually adjusting the angle of the spray nozzle by a gear, and a horizontal moving unit for connecting one side of the angle adjusting unit and horizontally moving the angle adjusting unit left / right by a ball screw; The decontamination spray nozzle in the 3-axis direction is provided with the horizontal moving part connected / installed and having a vertical / rear moving part for moving the horizontal moving part forward / backward by a ball screw and moving the horizontal moving part up / down by an adjustment rod. A spray nozzle adjusting member which moves the nozzle and adjusts the angle of the spray nozzle; A table on which the decontamination object contaminated with radioactivity is placed, a connecting table installed at the center of the lower part of the table, a rotating shaft at which the end is integrally connected / installed to the connecting table, a rotating shaft housing to which the rotating shaft is inserted / installed, and the rotating shaft housing A housing support supported by the bearing, a main support on which the housing support is installed and connected / fixed to the chamber member by a fixed support, a worm gear housing fixed to the lower part of the main support, and one side of the rotating shaft installed inside the worm gear. A rotary table member having a worm gear connected to a stage and an operating motor installed at one side of the worm gear housing to operate the worm gear; A hopper part disposed under the injection nozzle adjusting member and the rotating table member and connected to the body part in the body part of the chamber member, connected to / installed under the hopper part, and having a HEPA filter embedded therein; A dust suction member having a blower connected to the filter; The spray nozzle adjusting member, the rotary table member, and the dust suction member are installed therein, and a plurality of wheels are installed at the bottom, and a buffer part and an air inlet are respectively installed on the upper surface thereof, and a work glove is installed on one side thereof. Pneumatically hinged to the body portion and the door portion is 90 to 150 ° rotation opening and closing around the hinge coupling portion, respectively located on both sides of the body portion and one end is hinged to the body portion and the other end is hinged to the door It is configured to include the chamber member having a cylinder, Removable decontamination chamber, characterized in that to control the angle and position of the decontamination spray nozzle, to rotate the decontamination object and to decontaminate the decontamination object, and to collect / store the removed dust. The method of claim 1; The angle adjusting unit is a support that is connected to / installed in a horizontal moving unit, a worm gear installed in the support, an angle adjusting handle which is connected to the worm shaft of the worm gear and positioned above the support, and a worm wheel of the worm gear. Removable decontamination chamber, characterized in that configured as a nozzle connected to the shaft and the injection nozzle is inserted / installed. The method of claim 1; The horizontal moving part is connected to the support rod integrally connected to the angle adjusting unit, the horizontal rod is fixed to the end of the connecting rod is installed, the horizontal ball screw is installed the horizontal slider, and the upper / lower horizontal ball screw A horizontal guide rod which is installed and guides the horizontal slider, a support for bearing the horizontal ball screw, and both ends of the horizontal guide rod are fixed / connected, and a horizontal movable handle connected to the ball screw and installed on one side of the support. Mobile decontamination chamber. The method of claim 1; The vertical / rear moving part is a vertical guide rod which is inserted / penetrated at both ends of the support of the horizontal moving part, a vertical ball screw which is located between the vertical guide rods and one side of the support is connected / installed, and an upper end of the vertical guide rod is fixed. The upper support which is supported / bearing the upper end of the vertical ball screw, the lower support on which the lower end of the vertical guide rod is fixed / supported and the lower end of the vertical ball screw is bearing, and the lower end of the vertical ball screw is inside A gear box connected to the bevel gear of the lower supporter and installed on one side of the lower surface of the lower supporter, between the front and rear guide rods which are inserted / penetrated in parallel with the connecting rods at both ends of the lower supporter, Is located between the front and rear ball screw to be connected / installed, the front and rear ball screw and one side front / rear guide rod Guide rod support fixed to the body of the chamber member by the vertical adjustment rod coupled to the bevel gears inside, the front and rear guide rods are fixed / supported respectively, supporting the front and rear ball screws and the vertical adjustment rods, and fixed to the body of the chamber member. And a front / rear movement handle and a vertical movement handle which are respectively installed at the ends of the front / rear ball screw and the vertical adjustment rod penetrating through the body of the guide rod support and the chamber member. Decontamination chamber. The method of claim 4; The vertical adjustment rod has a cross section A mobile decontamination chamber, characterized in that it has a shape or polygonal shape.