KR200272438Y1 - sample picking device for measuring the degree of radioactive surface contamination - Google Patents

Abstract

The present invention relates to a sampler for radioactive surface contamination measurement, as well as measuring efficiency and reliability; A sample collection unit for collecting surface contamination measurement samples directly; a pneumatic circuit unit for supplying suction force by vacuum and transfer force by compressed air to the sample collection unit; and a control unit for automatically controlling the entire sample collection process; and all operations A battery part for supplying electric power as the power source, and a body part for fixing each of these components in an appropriate position; With the appropriate amount of filter paper and dish contained in the filter paper tube and dish tube, respectively, stop the sampler on the surface to be measured and insert the operation switch.A single sheet of paper is withdrawn from the filter paper tube to collect the vacuum pad. While being adhered to the surface to be measured in the state adsorbed on and rotated at the same time, it is taken as a sample for measuring the surface contamination, while one dish is drawn out from the dish tube to receive the sampled filter paper, and a pair is collected. By collecting the resulting filter paper and dish into the dish picking tube in turn, by taking a sample for radioactive surface contamination measurement, there is an effect of improving the efficiency and efficiency of the sampling operation, and the measurement accuracy and reliability.

Description

Sample picking device for measuring the degree of radioactive surface contamination}

The present invention relates to a sampler for measuring radioactive surface contamination, and more particularly to a sampler for measuring radioactive surface contamination while increasing the measurement accuracy and reliability, and the efficiency of the sampling operation is also very high.

Nuclear power plants, such as nuclear power plants and hospitals, are increasingly being used.

Within the R & D center, there are various nuclear-related facilities, including Hanaro, and large nuclear facilities are expected to expand further.

The radioactive control area of such nuclear facilities is to be periodically measured and inspected once a week for the surface contamination level in the management area in accordance with the Atomic Energy Act and related regulations.

As the surface contamination measurement method, there is a probing method, which is a direct method, and a smear method, which is an indirect method.

The direct method is a method of directly measuring the contamination of a specific surface by using a radioactive detector. The indirect method is to contact a sampling smear paper on the surface to be measured and rub a number of times to take a sample for surface contamination measurement. It is a method of measuring the radioactive contamination on the sample using a meter.

On the other hand, since there is always radioactive material in the radioactive management zone, when measuring the pollution degree by the direct method, it is difficult to accurately measure the pollution degree by the influence of the surrounding radioactive material.

For this reason, as an ordinary surface contamination measurement method, the indirect method is mainly adopted without using the direct method.

Indirect method, that is, the method of taking a sample for measuring the surface contamination by smear paper, the sampler is about 10 times 100 cm ^{2 by} placing the smear paper having a diameter of 2 inches and a thickness of 0.1 mm on the surface to be measured. The sample is taken by rubbing it by hand.

However, the sampling method depending on the human hand has some problems as follows.

First, since the number, strength, and area of rubbing the smear paper vary depending on the sampler, the degree of contamination of the surface to be measured is transferred to the smear paper.

Secondly, this is the point that the accuracy and reliability thereof in surface contamination measurement are lowered.

Third, where the radioactive contamination is severe, there is a risk that the operator's hand will be contaminated with radioactive material during measurement sampling.

Fourth, in large-scale nuclear facilities such as nuclear power plants, there are many hundreds of measurement target points, which requires a lot of time and labor to collect samples for surface contamination measurement.

In view of the problems of the prior art as described above,

An object of the present invention is to provide a radioactive surface contamination measurement sampler by increasing the measurement accuracy and reliability while at the same time by relying on the machine rather than the human hands for sampling the radioactive surface contamination measurement.

1 is a perspective view of a sampler for measuring radioactive surface contamination according to an embodiment of the present invention.

FIG. 2 is a perspective view seen from a direction different from that of FIG. 1; FIG.

3 is a side view of FIG. 1;

Figure 3a is a view showing a non-operational state of the sample collection means,

Figure 3b is a view showing a state at the time of sampling of the sampling means.

4 is a partial cutaway front view of FIG. 1;

5 is a partial cutaway perspective view of FIG. 1.

6 is a plan view of FIG. 4.

Figure 7 is a longitudinal cross-sectional view of the filter paper tube constituting the sampler according to the present invention.

Figure 8 is a longitudinal cross-sectional view of the dish tube constituting the sampler according to the present invention.

Figure 9 is a longitudinal sectional view of the dish picking tube constituting the sampler according to the present invention.

Figure 10 is a perspective view showing the extraction table and the transfer means constituting the sampler according to the present invention.

Explanation of symbols on main parts of the drawing

2: bottom 4: pillar

6: top plate 8: fixed plate

10: handle 12: filter paper

14: filter paper tube 15: vacuum pad for collecting

16: dish 18: dish tube

20: dish picking tube 22, 27, 120, 130: air cylinder

23: linear guide slot 24, 33: guide protrusion

25: Vacuum pads for paper supply 26, 34: Rod guide

30: vacuum pad for paper collection 32: transfer table

35: Shanghai transport motor 36: cylindrical cam guide slot

37: Feed guide shaft 40: Hollow shaft

43: support plate 45: power transmission shaft

50: rotary motor 55: disc gear

60: connection pipe 70: vacuum pump

72: locking end 74, 89: through-window

85: locking jaw 87: pushing hole

90: jamming 95: moving slot

100: operating arm 101: lifting plate

102: horizontal feed shaft 105: motor for horizontal feed

106: through hole 110: pneumatic pump

140: valve 150: control unit

The present invention for realizing this,

Sampling unit for taking surface contamination measurement sample directly, Pneumatic circuit unit providing suction force by vacuum and conveying force by pressure air, Control unit for automatically controlling the whole sampling process, and all operations It comprises a battery unit for supplying power as a power source is made, and a body portion for fixing each of these components in the proper position.

The sampling unit includes a filter paper tube having a plurality of sampling filter papers (Filter paper) embedded therein;

Dishes tube (Dish tube) containing a plurality of dishes (Dish) for holding each of the filter paper;

A dish picking tube for sequentially stacking the sampled filter paper and the dish;

Paper supply means comprising: a paper supply vacuum pad installed at the end of the cylinder and the cylinder rod, the paper supply means for drawing and supplying one sheet of filter paper from the filter paper tube each time;

A sampling vacuum pad which vacuum-adsorbs the supplied filter paper, and sample collection means for collecting the sample by bringing the vacuum pad into close contact with the surface to be collected while rotating the filter paper;

Paper collecting means for collecting the sampled filter paper consisting of a paper collecting vacuum pad installed at the end of the cylinder and the cylinder rod;

Dish withdrawing means for withdrawing one dish each time from the dish tube;

A horizontal transfer means including a transfer table that receives the drawn dish and moves the sampled collected filter paper collected by the paper collecting means onto a dish, and then moves to a lower portion of the dish picking tube;

Characterized in that it comprises a loading means for pushing up and loading a pair of filter paper and the dish to the dish picking tube.

The sampling device for measuring radioactive surface contamination according to the present invention is a state in which an appropriate amount of filter paper and dish are placed in two different tubes, and the sampler is placed on the surface to be measured for contamination and then the operation switch is turned on. One sheet of filter paper is drawn from the lower end of the filter paper tube by the suction of the paper supply vacuum pad, and the filter paper is extended to the lower portion of the sampling pad of the sampling means by advancing the cylinder rod provided with the paper supply vacuum pad. The filter paper is then adsorbed to the vacuum pad for collecting, and in this state is adhered to the surface to be measured and rotated at the same time to be collected as a sample for measuring the surface contamination, while the vacuum pad for collecting the paper of the paper collecting means. The lower part of the vacuum pad for collecting Position the sample to absorb the sampled filter paper, and then retract the cylinder rod of the paper collecting means to move to the position where the extracted dish is placed while horizontally moving while the transfer table is loaded with the dish withdrawn from the dish tube. Move, release the negative pressure of the paper collecting vacuum pad, take the sampled filter paper into the dish, and then move the transfer table to the lower end of the dish picking tube, and in this position, below the center of the transfer table. Raising the loading means in which a portion is located is characterized by completing the sampling operation for radioactive surface contamination measurement by sequentially loading the filter paper and the dish formed in a pair from the bottom into the dish picking tube.

That is, the sampler for measuring the surface contamination of the radioactive contamination of the present invention is configured so that the entire process of sampling is performed by a machine.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of a sampler for measuring radioactive surface contamination according to the present invention will be described in detail.

1 is a perspective view of a sampler for measuring surface contamination radioactive according to an embodiment of the present invention, Figure 2 is a perspective view from a different direction from Figure 1, Figure 3 is a side view of Figure 1, Figure 3a of the sample collection means Figure 3 is a view showing a non-operational state, Figure 3b is a view showing a state at the time of sampling of the sampling means, Figure 4 is a partial cutaway front view of Figure 1, showing a state in which the front sampling means is removed. . FIG. 5 is a partially cutaway perspective view of FIG. 1, illustrating a state where the upper plate is removed, and FIG. 6 is a plan view of FIG. 4.

7 is a longitudinal sectional view of the filter paper tube constituting the sampler according to the present invention, Figure 8 is a longitudinal sectional view of the dish tube constituting the sampler according to the present invention, Figure 9 is configured a sampler according to the present invention 10 is a longitudinal cross-sectional view of the dish picking tube, Figure 10 is a perspective view showing the extraction table and the loading means constituting the sampler according to the present invention.

The radioactive surface contamination measurement sample collection device according to the present invention has a large sample collection unit for directly collecting surface contamination measurement, a pneumatic circuit unit for supplying the adsorption force by vacuum to the sample collection unit, and automatically controls the entire sampling process. The control part, the battery part which supplies electric power as a power source which all the operation | movement is performed, and the main-body part which fixes each of these component parts in an appropriate position are comprised.

The main body is to be a skeleton for mounting the remaining components, it is assembled with a plurality of metal plate and metal pillar having a suitable thickness. That is, the lower plate 2, four pillars 4 which are erected at both ends of the front end of the lower plate and the positions at a predetermined distance from the front end, the upper plate 6 assembled on the upper part of the column and the upper plate It consists of a fixed plate (8) which is installed to protrude toward the front end of the. In addition, it is preferable that the handle 10 is attached to the central portion of the upper plate 6 so as to be easily portable.

The sampling unit is a sampling means for taking a sample by contacting and rotating the vacuum pad 15 for sampling in a state in which the filter paper 12 is adsorbed, and a plurality of sampling filter paper (12: Filter) Filter paper tube (14) with built-in paper, Dish tube (18: 18) with built-in plurality of dishes (16: Dish) for holding each filter paper 12, and sampling Is composed of a dish picking tube (20) for stacking the finished filter paper and the dish, and an air cylinder (22) and a vacuum pad (25) for paper supply installed at the end of the cylinder rod. Paper supply means for extracting and supplying one sheet of filter paper 12 from the tube 14 each time, a vacuum pad 15 for collecting vacuum to suck the supplied filter paper, and an air cylinder 27 and a cylinder. Installed at the rod end Paper collection means consisting of a paper collecting vacuum pad 30 for collecting the sampled filter paper, a dish withdrawing means for withdrawing one dish (16) also each time from the dish tube (18), and A transfer table that receives and moves the withdrawn dish 16 and collects the filter paper 12 after completion of the sampling collected by the paper collecting means on the dish 16 and then moves to the bottom of the dish picking tube 20. It comprises a horizontal transfer means comprising a 32, and a loading means for pushing up and loading the pair of filter paper 12 and the dish 16 to the dish picking tube 20.

The sampling means includes a shanghai transport motor (35) mounted on the distal end of the fixed plate (8) protruding forward of the upper plate (6) of the main body, and a transfer extending vertically from the bottom of the fixed plate (8) directly under the motor. A fixed element including a guide shaft 37,

Being mounted on the transfer guide shaft 37 and the fixed plate 8, it is constrained by the transfer guide shaft 37 and divided into a non-rotating portion 39 of the upper portion and a rotating portion 41 of the lower portion to enable relative rotation between each other. A hollow shaft 40, a support plate 43 fixed to protrude forward from the non-rotating portion 39 of the hollow shaft 40, and a central portion of the support plate 43, which extends directly from the center of the support plate 43 to the fixed plate. It is installed to penetrate the hole formed at the end of the (8) to guide the up and down conveyance and restrain the rotation of the non-rotation portion 39 of the hollow shaft 40 coupled with the support plate 43 and the support plate for the shanghai transport A power transmission shaft 45 for transmitting power from the motor 35, a rotating motor 50 provided at the distal end of the support plate 43, and a pinion 52 arranged on the shaft of the motor 50; And, it is mounted to the rotating portion 41 of the hollow shaft 40 and engaged with the pinion 52 on the outer peripheral surface It comprises a large-diameter disc gear 55 with a gear interlocked with each other and a vacuum pad 15 for collecting is mounted on one side edge of the disc gear 55.

The sampling means is all the other elements except for the Shanghai transport motor 35 and the feed guide shaft 37 moves up and down together, but the non-rotating portion 39 and the rotating portion 41 of the hollow shaft 40 is separated by a boundary. And the rotatable portion is defined. That is, the sample collecting means is able to move up and down as a whole according to the rotation of the shanghai transport motor 35, the rotating portion of the hollow shaft 40 by the rotation motor 50 installed on the front end of the support plate 43 The disc gear 55 coupled to the 41 is rotated about the transfer guide shaft 37.

The collecting vacuum pad 15 is connected to the vacuum pump 70 via a connection pipe 60.

That is, when a negative pressure acts on the central portion of the vacuum pad 15 for collecting as the vacuum pump 70 operates, the vacuum pad 15 for collecting sucks the filter paper 12 described above. That is, due to the negative pressure in the vacuum pad 15 for collecting, the filter paper is attracted to the vacuum pad 15 for collecting, that is, sticks to it.

In the sampling process according to the present invention, the collecting vacuum pad 15 is placed on the surface to be measured while adsorbing the filter paper 12, and then the rotating motor 50 is rotated to contaminate the contaminants. It is to be transferred to this filter paper 12.

As a result, the filter paper 12 is completed by one radioactive surface contamination measurement sample by sweeping on the surface to be measured while drawing a circle of a certain diameter due to the rotation of the rotary motor 50.

While the filter paper 12 sweeps over the surface to be measured, a double spring 57 is inserted in order to minimize the load fluctuation due to mechanical vibration or surface roughness difference between the passing points.

It is preferable that the sampling vacuum pad 15 is made of a flexible material such as rubber so as to maintain a good airtight state with the filter paper 12.

Other than the vacuum pad 15 for collecting, it is made of stainless steel (SUS304) or aluminum (A6061).

The site where the relative motion between the components during the movement of the shank or rotation is generated, of course, to smoothly operate by smoothly processing.

The filter paper tube (14), the dish picking tube (20) and the dish tube (18) use fixing brackets at the front end of the lower plate (2) constituting the main body. It is mounted in a row from left to right so as to be located at a predetermined height on the plate surface. However, the dish picking tube 20 is installed at the center of the front end portion, and the dish tube is not directly to the right side of the dish picking tube 20 but at a predetermined interval, that is, to the right end of the front end of the lower plate 2. Install adjacently.

The filter paper tube 14 includes a plurality of filter papers 12 for supplying the filter paper 12 to the sampling means. As shown in Fig. 7, the filter paper tube 14 has an upper / lower end portion open, and a locking end 72 is formed on the inner circumferential surface of the lower end portion so as to protrude at a predetermined width toward the center of the shaft. The edges of the filter paper are laminated to the locking end 72 in a locked state. In addition, the front and rear through-holes 74 are formed to be cut in the vertical direction to facilitate the remaining amount of the filter paper.

The dish tube 18 is for supplying a dish 16 for containing the filter paper from which the sampling is completed by the sampling means, and a plurality of dishes 16 are stacked and embedded therein. As shown in Fig. 8, the dish tube 18 is also open at the upper and lower ends, and is divided into a large diameter portion 82 having a large outer diameter and a small diameter portion 84 at the upper portion from the lower end to a predetermined height. The inner diameters of the large-diameter portion 82 and the small-diameter portion 84 are the same, and the internal spaces are in communication with each other, but the centers are processed so that their centers are shifted by a constant distance from each other. That is, the small diameter portion 84 is processed in the inner circumferential surface and the outer circumferential surface concentric, the large diameter portion 82 is partially processed so that the inner circumferential surface is biased a predetermined interval toward the front side, and therefore the locking step 85 is inside Is formed. In addition, the dish tube 20 is formed with a pushing hole 87 penetrating rearward at the position of the locking jaw 85, and is provided with a through-window 89 formed to be vertically cut in the front and rear of the small diameter portion 84. In this way, the remaining amount of the dishes stacked therein may be easily determined.

The dish picking tube 20 is to store and temporarily store the sampled filter paper on the dish 16 to be stacked in a pair of state, as described below, the dish 16 and filter forming a pair Paper 12 is sequentially stacked from the bottom up. That is, as shown in Figure 9, the dish picking tube 20 also has an upper / lower end is opened, and two locking projections 90 are formed to protrude toward the center at 180 ° intervals on the left and right inner peripheral surface of the lower end. The lower portion of the locking projection 90 is provided with an inclined surface 91 to facilitate the operation of pushing up the dish containing the filter paper from the lower portion into the tube, and the upper surface of the locking protrusion 91 is loaded after the dish is loaded. This prevents it from falling back down by being caught. In addition, the rear side of the lower end is formed with a movable slot (95) cut upwards to a predetermined height to enable the operation arm 100 to be described later.

When the inner circumferential surface of each of the tubes 14, 18, and 20 is rough, the embedded filter paper 12 or dish 16 or the pair of filter paper 12 and dish 16 are not aligned in a predetermined form. It is preferable to process a surface smoothly, and it can also produce using acrylic whose surface is smooth.

The paper supply means is a means for taking out the filter paper 12 from the filter paper tube 14 one by one and supplying the filter paper 12 to the sampling vacuum pad 15 of the sampling means, connected to the pneumatic pump 110. It consists of an air cylinder 22 which is connected via a molten pipe and a vacuum pad 25 for paper supply mounted on the exposed end of the cylinder rod. The cylinder rod may be exposed to the outside of the cylinder by a predetermined length even in the retracted state, the rod guide 26 for maintaining the horizontal portion of the exposed portion during the retreat and forward movement is provided to surround the outer peripheral surface of the cylinder, the lower plate (2) Secure in. In the retracted state of the cylinder rod, the paper supply vacuum pad 25 is installed to be located directly below the filter paper tube 14 with the suction direction upward, and thus the air cylinder 22 and the rod guide ( 26 is vertically mounted to the left side of the lower plate of the main body at a predetermined interval. A guide protrusion 24 is formed on the outer circumferential surface of the cylinder rod in a radial direction, and a linear guide slot 23 through which the guide protrusion 24 is guided is installed in the rod guide 26 so that the rod can be moved forward and backward. The suction direction is always maintained upward by preventing the rotation of the paper supply vacuum pad 25 installed at the end thereof. In this state, when the negative pressure by the vacuum pump 70 acts on the paper supply vacuum pad 25, the filter paper 12 is drawn out one by one and sticks to the paper supply vacuum pad 25, and the cylinder rod is advanced. In this case, the paper feeding vacuum pad 25 is placed at a position intersecting with the rotation path of the collecting vacuum pad 15. At this time, the collecting vacuum pad 15 moves to the crossing position and sucks each other. Facing the direction.

The paper collecting means is a means for transferring the filter paper 12 after the sampling is completed from the vacuum pad 15 for collecting the sample to the transfer table 32, similar to the paper supply means. It consists of an air cylinder 27 and the vacuum pad 30 for paper collection attached to the exposed end of a cylinder rod. The air cylinder 27 and the vacuum pad 30 for collecting paper are provided with the same specifications as those of the paper supply means, and the cylinder rod may also be exposed to the outside of the cylinder by a predetermined length. It is vertically mounted at a predetermined interval to the right side, and is positioned in parallel with the paper supply means and located at the same distance from left and right with respect to the longitudinal center line of the lower plate of the main body. In addition, as in the paper supply means, a guide protrusion 33 protruding in a radial direction is formed on the outer circumferential surface of the cylinder rod of the paper collecting means, but has a cylindrical cam type to serve as a cylindrical cam in the rod guide 34. Guide slots 36 are formed. Therefore, the paper collecting vacuum pad 30 is positioned on the same horizontal line as the retracted position of the paper supply vacuum pad while the suction direction is downward in the retracted state of the cylinder rod. The guide protrusion 33 is guided to the guide slot 36 so that the suction direction is upward at a position where the guide protrusion 33 is rotated 180 degrees so as to intersect with the vacuum pad 15 for collecting the sample.

The horizontal conveying means receives horizontally the dish drawn out from the dish tube 18 by a predetermined distance, receives the filter paper 12 collected by the paper collecting means, and moves again to the lower portion of the dish picking tube 20. It is a means for moving the pair of filter paper 12 and the dish 16, the transfer table 32 on which the dish 16 is to be placed, and the horizontal feed shaft interlocked with the transfer table 32 ( 102 and a horizontal feed motor 105 that provides power to the horizontal feed shaft 102. The transfer table 32 is interlocked with the horizontal feed shaft 102 and is positioned at the center of the lower plate 2 from the lower portion of the dish tube 18 installed at the right end of the front end of the lower plate 2 of the main body. As shown in FIG. 10, the shape of the upper seat where the dish 16 is placed is reciprocated horizontally to the lower portion of the tube 20, and the through hole opened from the center to the rear is formed as shown in FIG. 10. 106 is formed and provided in a rough horseshoe shape. Therefore, the transfer table 32 receives the dish 16 drawn out in the lower portion of the first dish tube 18 and moves to the retreat position of the paper collecting vacuum pad 30, in which state the paper is collected. After receiving the sampled filter paper 12 from the vacuum pad 30 for use, it moves to the bottom of the dish picking tube 20.

The dish withdrawing means is a means for allowing the dishes 16 embedded in the dish tube 18 to be withdrawn one by one so as to be placed on the transfer table 32 positioned at the bottom, and withdrawal air cylinder 120. It consists of. The drawing air cylinder 120 is horizontally positioned at a predetermined height from the lower plate at the rear of the dish tube 18 so that the end of the rod is located in the pushing hole 87 formed at the rear of the outer circumferential surface of the dish tube 18 in a mounted state. It is installed to maintain. That is, when the rod advances, the lowermost dish loaded on the locking jaw inside the dish tube 18 is pushed forward to match the center of the dish 16 with the center of the lowermost portion of the dish tube 18 and the large diameter portion 82. It is to fall on the transfer table 32 in a free-falling manner.

The stacking means is configured to push up the filter paper and the dish positioned on the transfer table 32 at the bottom of the dish picking tube 20 in the form of a pair to load the inside of the dish picking tube 20. By means of the loading air cylinder 130 is installed vertically to the rear of the dish picking tube 20, the working arm 100 is fixed to the end of the cylinder rod and placed horizontally and the through hole formed in the transfer table It is composed of a lifting plate 101 which is provided with a diameter slightly smaller than the diameter is coupled to one end of the operation arm. As shown in FIG. 10, the cylinder rod of the loading air cylinder 130 is installed to ascend and descend from the bottom of the cylinder, and the lifting plate 101 installed at one end of the operation arm 100 is the dish picking tube. It is located at the lower center position of the (20). That is, when the transfer table 32 is located at the lower portion of the dish picking tube 20, the operation arm 100 and the lifting plate are placed at a lower position, and the transfer table (when the cylinder rod 132 is raised) Raises through the through hole 106 formed in the 32 to lift the dish 16 and the filter paper 12 on the transfer table 32 to the position just above the locking projection 90 of the dish picking tube 20. Allow it to be stacked inside the tube.

The pneumatic circuit unit provides a pneumatic pressure and a negative pressure to the plurality of cylinders (22, 27, 120, 130) and the vacuum pads (15, 25, 30) used in the sample collection unit pneumatic pump 110 to generate a transfer force and adsorption force And a vacuum pump 70 and a connecting pipe 60 connected to the respective components from the pumps, and also for providing or blocking negative pressure or providing or blocking pressure air supplied into the cylinder. The valve 140 is configured to include.

The vacuum pump 70 has a suction force, i.e., a vacuum state such that the filter paper does not fall while the collecting vacuum pad 15, which requires maximum adsorption force, sweeps over the measurement target surface while absorbing the filter paper. You should have enough capacity to make it.

The pneumatic pump 110 should provide a pressure air to the cylinders (22, 27, 120, 130) to have a capacity suitable for advancing or retracting the cylinder rod, as well as four air cylinders used during sampling It does not require large capacity as it does not operate at the same time.

The valve 140 is a component that connects or blocks a flow path by opening or closing a movement path of air, and uses those belonging to a direction control valve. However, it is desirable to use a solenoid valve for precision and ease of control.

In addition, the connection pipe 60 has an appropriate level of flexibility so as not to disturb the movement of the operating means.

The vacuum pump 70 and the pneumatic pump 110 itself is within the scope of the general vacuum pump and pneumatic pump, and further description thereof will be omitted here.

The control unit 150 functions to control the operation of all actuators included in the sample collection unit, and a micro computer is embedded therein.

The voltage for operating the controller 150 is about DC 12V, and includes a configuration including an operation switch, a stop switch, a timer, a display lamp, and the like.

The timer serves to stop the rotation after the sampling pad 15 rotates for a predetermined time, and the set value may be about 5 to 10 rotations. Of course, the setting value can be changed arbitrarily as needed.

As the function of the display lamp, it is preferable to include a function indicating which component is currently in operation and a function of notifying a site of an abnormal occurrence.

In addition, the operation switch has two setting modes of "continuous" and "single". In case of continuous operation, the sampler continues the sampling process until the stop switch is operated. In case of operation, once sampling is completed, the operation is stopped. That is, when the operation switch is set to "continuous", the sampler only needs to move the measurement target point by holding the sampler for measuring the surface contamination of the present invention.

The battery unit includes a battery and a wire connected thereto and is mounted in a control unit.

The wires are fixed to the body so as not to protrude to the outside, so as not to interfere with other parts during sampling. In addition, the site of mounting the battery on the main body, it is preferable to adopt a one-touch (One-touch) fastener to facilitate the removal.

Referring to the operation of the sampler for radioactive surface contamination measurement according to the present invention of the configuration as described above are as follows.

First, in a non-operating state, that is, in a stopped state, the paper supply vacuum pad 25 is positioned under the filter paper tube 14, which is a retracted state of the cylinder rod, and the vacuum pad 15 for collecting the sampling means is Located at 12 o'clock (in front of the dish picking tube), the paper collecting vacuum pad 30 is located between the dish picking tube 20 and the dish tube 18, which are the retracted state of the cylinder rod, the transfer table ( 32 is located under the dish tube 18, and the elevating plate 101 is placed at the lowest position lower than the height of the transfer table 32. That is, the rods of all the cylinders 22, 27, and 120 except the loading air cylinder 130 are positioned in the retracted state.

When the operation switch is operated while the sampler is positioned on the target surface to be sampled, the operation of the vacuum pump 70 is caused by the operation of the vacuum pump 70 to the paper supply vacuum pad 25 located below the filter paper tube 14. A negative pressure acts on one sheet of filter paper 12 to be pulled out of the tube 14 and sticks. At this time, the vacuum pad 15 for sampling of the sampling means moves as the disc gear 55 moves counterclockwise. Stand by moving to 9 o'clock.

Subsequently, the cylinder rod of the paper supply means is advanced so that the paper feeding vacuum pad 25 is positioned directly under the sampling vacuum pad 15. At this time, the vacuum supply pad is applied to the collecting vacuum pad 15 by a vacuum pump. The negative pressure acts, and the negative pressure of the paper supply vacuum pad 25 is cut off so that the filter paper 12 is absorbed by the vacuum pad 25 for collecting.

The paper feeding vacuum pad 25 is returned to its original position by retraction of the cylinder rod, and in this state, the shanghai conveying motor 35 of the sampling means is operated to press the sampling vacuum pad 15 to a constant pressure on the measurement target surface. In this state, as the rotary motor 50 is operated to rotate the disc gear 55, the collecting vacuum pad 15 adsorbing the filter paper is rotated by an appropriate number, and then 3 The rotation stops in the clockwise direction.

When the sampling is completed by the proper contact pressure and the appropriate number of rotations, the vacuum pad 15 for collecting is lifted by the operation of the shanghai transport motor 35. In this state, the cylinder rod of the paper collecting means is advanced to the paper. At the same time as the collecting vacuum pad 30 advances and rotates by 180 °, the collecting vacuum pad 30 is positioned to face the adsorption direction directly below the collecting vacuum pad 15 which is absorbing the sampled filter paper 12. In this state, the sound pressure of the collecting vacuum pad 15 is released, and a negative pressure is applied to the paper collecting vacuum pad 30 so that the paper sticks to the paper collecting vacuum pad 30, and then the cylinder rod is attached. At the same time, it is retracted and rotated 180˚ in the opposite direction as the forward movement, and the suction direction is directed downward.

During the operation described above, the dish 16 embedded in the dish tube 18 causes the rod of the drawing air cylinder 120 to be advanced and placed on the transfer table 32, and the transfer table 32 ) Should be moved to the bottom of the paper collecting vacuum pad 30 as soon as the retracted position to wait. However, there is no breadth of timing adjustments because there is no mutual interference between operations. In other words, the sampled filter paper 12 may be sucked to reach the position before the paper collecting vacuum pad 30 returns to its original position.

Subsequently, when the sampled filter paper is released on the dish on the transfer table 32 by releasing the sound pressure of the paper collecting vacuum pad 30, the transfer table 32 moves to the lower portion of the dish picking tube 20. .

At this time, the rod of the loading air cylinder 130 is raised to lift the operation arm 100, the operation arm 100 is further raised through the through hole 106 of the transfer table 32, the magnetic arm The lifting plate 101 at the end lifts the dish 16 on which the filter paper 12 is raised, and the operation arm 100 continues to rise through the movable slot 95 formed at the rear of the dish picking tube 20. To the height of the locking protrusion 90 or more inside the tube 20, and then lowering the elevating plate 11 so that the dish 16 is caught by the locking protrusion 90 and loaded into the dish picking tube 20. Keep it intact.

Thereafter, when the lifting plate 101 descends to the low point, and then the transfer table 32 moves horizontally to the lower portion of the dish tube 18, the operation of one cycle is completed.

By providing a sampler for measuring radioactive surface contamination of the present invention as described above, by fully mechanizing the sampling operation that can easily measure the degree of radioactive surface contamination inside the nuclear facility, as well as improving the work efficiency of the sampling process, measurement at the time of measurement There is an effect of improving the accuracy and reliability of the results, and has an excellent effect that can also eliminate the concern about the safety of the operator.

Although the present invention as described above has been shown and described in detail with respect to specific embodiments, it is possible in the art that various design changes and changes are possible without departing from the spirit and scope of the invention as indicated by the utility model registration claims. Anyone with ordinary knowledge in Esau will readily know.

Claims (9)

Sampling unit for taking surface contamination measurement sample directly, Pneumatic circuit unit providing suction force by vacuum and conveying force by pressure air, Control unit for automatically controlling the whole sampling process, and all operations And a battery unit for supplying electric power as a power source, and a body unit for fixing each of these components to an appropriate position. The method of claim 1, The sampling unit includes a filter paper tube containing a plurality of sampling filter papers; A dish tube having a plurality of dishes therein for containing respective filter papers; A dish picking tube for sequentially stacking the sampled filter paper and the dish; Paper supply means comprising: a paper supply vacuum pad installed at the end of the cylinder and the cylinder rod, the paper supply means for drawing and supplying one sheet of filter paper from the filter paper tube each time; A sampling vacuum pad which vacuum-adsorbs the supplied filter paper, and sample collection means for collecting the sample by bringing the vacuum pad into close contact with the surface to be collected while rotating the filter paper; Paper collecting means for collecting the sampled filter paper consisting of a paper collecting vacuum pad installed at the end of the cylinder and the cylinder rod; Dish withdrawing means for withdrawing one dish each time from the dish tube; A horizontal transfer means including a transfer table that receives the drawn dish and moves the sampled collected filter paper collected by the paper collecting means onto a dish, and then moves to a lower portion of the dish picking tube; A sampler for radioactive surface contamination measurement, comprising a loading means for pushing up and loading a pair of filter papers and dishes into a dish picking tube. The method of claim 2, The sampling means includes a fixed element including a shanghai motor for mounting on the front end of the fixed plate protruding toward the front of the upper plate of the main body, and a transport guide shaft extending directly from the bottom of the fixed plate directly below the motor; A hollow shaft which is mounted to the conveying guide shaft and the fixed plate, which is constrained to the conveying guide shaft and divided into a non-rotating portion and a lower rotating portion of the upper portion so as to allow relative rotation with each other, and from the non-rotating portion of the hollow shaft to the front side. The support plate is fixed to protrude, and extending from the center of the support plate to the upper portion through the hole formed in the end of the fixed plate to guide the shanghai and rotation of the non-rotating portion of the hollow shaft coupled with the support plate and the support plate A power transmission shaft for restraining and transmitting power for the shanghai transport from the motor, a rotation motor installed at the front end of the support plate, a pinion built in the shaft of the motor, mounted on a rotation part of the hollow shaft, Large-diameter disc gears with gears interlocking with pinions and interlocking gears Sampler for radioactive surface contamination measured, characterized in that comprises a vacuum pad for picking mounted to seolhan shovel for the dual vibration-absorbing spring to a side edge lower state. The method of claim 2, The filter paper tube has an open upper and lower ends, and has a locking end protruding a predetermined width toward the axis center on the inner circumferential surface of the lower end so that the edges of the filter paper are laminated, and the front and rear of the filter paper can be easily identified. A sampler for radioactive surface contamination measurement, characterized in that it comprises a through-window formed incision vertically long. The method of claim 2, The dish tube is open at the upper and lower ends, and is divided into a large diameter portion having a large outer diameter from a lower portion to a predetermined height, and a small diameter portion at an upper portion thereof. Divided into sides, The small diameter portion has an inner circumferential surface and an outer circumferential surface formed concentrically, and the large diameter portion has an upper side that is the same as the small diameter portion, and the lower side is formed so that the inner circumferential surface is biased a predetermined distance toward the front side, and a locking jaw is formed on the rear side of the lower inner circumferential surface. It is provided with a pushing hole that is formed through the rear of the jaw to allow the entry of the dish withdrawal means, and has a through-window formed in the vertically long incision in the front and rear of the small diameter portion to facilitate the remaining amount of the dish. A sampler for measuring radioactive surface contamination. The method of claim 2, The dish picking tube has an upper / lower end portion, and has two hooking protrusions formed on the inner circumferential surface of the lower portion at an interval of 180 ° and the lower portion is formed as an inclined surface, and upwards to a predetermined height on one side of the lower portion. A sampler for radioactive surface contamination measurement, characterized in that it comprises a moving slot is formed incision. The method of claim 2, The paper supply means and the paper collecting means are each connected to a pneumatic pump via a connecting pipe and having an air cylinder having a length of a length to have an exposed portion of a predetermined length, and a paper supply for the paper mounted on the exposed end of the cylinder rod Or a vacuum guide for collecting and a rod guide for guiding and supporting the cylinder rod, Each of the cylinder rods has guide protrusions protruding to one side in a radial direction, a straight guide slot is formed in the longitudinal direction of the rod guide of the paper feed means, and a cylindrical cam type guide slot is formed in the rod guide of the paper collecting means. A sampler for measuring radioactive surface contamination. The method of claim 2, The horizontal conveying means comprises a conveying table on which the dish is placed, a horizontal conveying axis interlocked with the conveying table, and a horizontal conveying motor for providing power to the horizontal conveying axis, The transfer table is a sampler for measuring the surface contamination of the radioactive surface, characterized in that formed on the basis of a disc but a through-hole formed from one of the center to one side. The method of claim 1, The pneumatic circuit unit is provided with a pneumatic pump and a vacuum pump for generating a feed force and a suction force by providing a pneumatic pressure and a negative pressure to a plurality of cylinders and vacuum pads used in the sample collection unit, these pumps are connected to each of the components And a plurality of directional control solenoid valves connected to the connection pipe and connected to the middle of the pipe to provide or block pneumatic and negative pressure.