KR20170044281A

KR20170044281A - Automatic measuring device of gamma ray

Info

Publication number: KR20170044281A
Application number: KR1020150143766A
Authority: KR
Inventors: 박정균; 고용권
Original assignee: 한국원자력연구원
Priority date: 2015-10-15
Filing date: 2015-10-15
Publication date: 2017-04-25
Also published as: KR101739374B1

Abstract

The present invention relates to an automatic gamma ray measuring device capable of automatically taking out specimen containers and measuring radiation without a manual force. The automatic gamma ray measuring device comprises: a table; a guide means installed in an upper part of the table composed of a transverse guide, a longitudinal guide, and a vertical guide; a variable robot arm unit composed of a robot arm installed in the guide means and a driving means moving the robot arm along the guide means; a finger unit joined to an end of the robot arm having a joint capable of holding the specimen containers where radiation measurement is performed; a measuring unit arranged on one side of the guide means and composed of a lead shielding box where radiation measurement is performed, and a door opening and closing the lead shielding box; and a specimen storing unit arranged on one side of the guide means to be separated from the lead shielding box, and composed of a plurality of rotary discs wherein a plurality of seating grooves receiving the specimen containers are formed along a rim and a rotary disc driving means. The purpose of the present invention is to provide the automatic gamma ray measuring device capable of remarkably reducing time and efforts required to measure radiation.

Description

TECHNICAL FIELD [0001] The present invention relates to an automatic measuring device for gamma ray,

The present invention relates to a gamma-ray automatic measuring apparatus, and more particularly, to a gamma-ray automatic measuring apparatus capable of automatically performing drawing of a sample container and radiation measurement without depending on manpower, thereby enabling a large amount of sample measurement without personnel management.

In the case of measuring the gamma ray of a sample using NaI or HPGe meter, the current technique is that the operator manually opens the lead shielding container, inserts the sample, closes the shielding container, measures the radiation, removes the sample, The measurement operation is repeated.

There is no problem when the number of samples to be measured is small. However, when the number of samples is large, not only does the operator become fatigued, but also time constraints that can be measured only at the operating hours of the operator. In addition, exposure and safety hazards are also due to the operator's continuing contact with the instrument and instrument.

In addition, in an automated conventional gamma ray measuring apparatus, since the sample is picked up from the upper part, there is a possibility that the sample falls down during the transportation, resulting in a safety risk.

As a conventional technique for this, a 'automatic sample exchanger for radiation detection' disclosed in FIG. 1 and disclosed in Japanese Patent Laid-Open Publication No. 10-2012-0071793 (published on Mar. 07, 2012) A mobile robot 110 for moving a sample selected from among a plurality of samples arranged in the sample alignment table to a radiation detector, and a radiation detector 160 are accommodated in the sample holder 130, A lead shielding door 150 having a sample injection hole 170 into which a sample is injected, a lead shielding door 140 for opening and closing a sample injection hole, and a radiation detector 160 measuring the radioactivity of the sample injected through the sample injection hole The sample of the radioactive material can be remotely controlled in real time and the plurality of samples can be precisely replaced.

However, as described above, since the above-described conventional technique picks up the sample from the upper part, it is dangerous to drop the sample during the sample transportation, and the large capacity of the motor Power usage is required.

Therefore, it is urgently required to develop a gamma-ray automatic measuring apparatus capable of automatically measuring gamma rays on a large amount of samples, ensuring the safety of the sample, reducing the mechanical load, and assuring the safety of the driver.

Published Japanese Translation of PCT Application No. 10-2012-0071793 (Open date: 2012. 07. 03)

Accordingly, it is an object of the present invention to provide a gamma-ray automatic measuring apparatus with a fully automated gamma gamma measurement and a small mechanical load while guaranteeing the safety of a sample.

According to another aspect of the present invention, there is provided a gamma ray automatic measuring apparatus including a table, guide means provided on the table, the guide means including a transverse guide, a longitudinal guide and a vertical guide, A fingertip provided with a joint capable of gripping a sample container coupled to an end of the robot arm and measuring a gamma ray; A measuring unit including a door for opening and closing a lead shield box and a mounting member disposed on one side of the guide member and spaced apart from the lead shield box, A plurality of grooves formed along the rim of the grooves, Eojineun made sample storage portion.

Wherein the guide means comprises a transverse guide provided on an upper portion of the desk, a vertical guide which varies along the transverse guide, and a longitudinal guide which varies up and down along the vertical guide, As shown in FIG.

And the seating groove is preferably formed to be radially symmetrical along the rim of the rotary disk.

The mounting groove includes an opening groove formed at an edge of the rotary disk so as to allow the sample container to be contained therein and a container supporting plate fixed to the lower portion of the rotary disk while supporting the lower portion of the sample container, As shown in Fig.

Preferably, the finger portion is composed of an upper finger and a lower finger both of which are independently gripped and released, and the interval between the upper finger and the lower finger is larger than the thickness of the rotation disk.

The door of the measuring unit is preferably opened and closed along the transverse guide while opening and closing the lead shield box.

Particularly preferably, the rotation disc is formed in a multi-stage, and the diameter of the lower rotation disc is larger than the diameter of the upper rotation disc.

Alternatively, the gamma-ray automatic measuring apparatus according to the present invention may further comprise a robot arm provided on the desk, a guide means including a lateral guide, a longitudinal guide and a vertical guide for guiding the robot arm so as to be variable in the vertical and vertical directions, A variable robot arm portion comprising a driving means for varying the position of the movable arm along the guide means; A finging coupled to an end of the robot arm and having a joint capable of gripping a sample container for gamma ray measurement; A measuring unit disposed at one side of the guide unit and including a lead shield box for measuring gamma rays and a door for opening and closing the lead shield box; And an elastic member disposed on one side of the guide means and spaced apart from the lead shield box and having an insertion groove penetrating from the top to the bottom so as to insert the sample container, A plurality of container boxes to be attached, and a sample storage section comprising a frame for supporting the container box.

Here, the finger portion includes a top finger for grasping or releasing the sample container, and a variable bottom plate having a cushion on the top surface thereof, and the upper finger is formed into a cylindrical shape with its rim extending upward.

At this time, preferably, the upper finger is inserted into the insertion groove from the lower part of the container box to perform the releasing operation, thereby pressing the elastic member outwardly to expand the insertion groove, so that the sample container can be landed on the variable bottom plate.

According to the gamma-ray automatic measuring apparatus of the present invention, gamma-ray measurement can be performed without dependence on manpower after the operator initially sets the measurement apparatus menu, and since many samples can be automatically measured continuously 24 hours at a time, The time and effort required for the measurement are remarkably reduced.

1 is a perspective view showing a conventional technique,
2 is a side perspective view of one embodiment of the present invention,
3 is a top perspective view of one embodiment of the present invention,
4A is a front view of an embodiment of the present invention,
Figure 4b is a top view of an embodiment of the present invention,
5 is a plan view of the rotating disk,
6 is a front view and a perspective view of the finger portion,
7 is a perspective view showing a second embodiment of the sample storage portion,
8 is a perspective view showing a third embodiment of the sample storage portion,
9A is a front sectional view showing a sample insertion process in a container box,
9B is a perspective view showing a second embodiment of the finger portion,
9C is a front sectional view showing a process of withdrawing the sample from the container box,

The specific structure or functional description presented in the embodiment of the present invention is merely illustrative for the purpose of illustrating an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention can be implemented in various forms. And should not be construed as limited to the embodiments described herein, but should be understood to include all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The embodiment of the present invention is composed of two embodiments with respect to the structure of the sample storage portion and the finger portion, the first embodiment of which includes the basic embodiment and the application example of the sample storage portion.

Hereinafter, the two embodiments will be described in order.

&Lt; Basic Embodiment >

The gamma ray automatic measuring apparatus according to the first embodiment of the present invention comprises a table 10, a variable robot arm portion, a finger reflex 50, a measuring portion 20, and a sample storage portion 30.

Here, the table 10 is a structure for supporting the remaining components as shown in FIGS. 2 and 3, and comprises a top plate on which the remaining components are installed and a frame for supporting the top plate.

The variable robot arm portion is configured to move the sample container 3 and the finger reflex 50 simultaneously to the lead shield box 21 when the finger refractory 50 grasps the sample container 3, A robot arm 515, and means for moving the robot arm 515. The robot arm 515 is an apparatus for drawing out the sample container 3,

The means for moving the robot arm 515 includes guide means for guiding the movement of the robot arm 515 as shown in Fig. 2, driving means for driving the robot arm 515 to be variable along the guide means, Lt; / RTI >

Specifically, the guide means includes a lateral guide 411, a longitudinal guide 421, and a vertical guide 431.

4A and 4B, the transverse guide 411 is a guide that is installed first on the table so that the robot arm 515 can be changed along the x axis, and the vertical guide 431 is a variable guide on the transverse guide 411 And the robot arm guides the robot arm in the vertical direction, that is, the z-axis direction in Fig. 4A. The longitudinal guide 421 guides the robot arm 515 on the y-axis in Fig. 4B.

2 to 4B, the horizontal guide 411 is installed first on the table 10, then the vertical guide 431 is installed on the horizontal guide 411 so as to be variable, and finally, the vertical guide 421 Is vertically variable along the vertical guide 431. The vertical guide 431 is provided with a vertical guide 431, However, the order of installation can be changed, and the arrangement of the remaining components may differ according to the order of installation.

The finger 50 is provided at the end of the robot arm 515 to grasp the outer circumferential surface of the sample container 3 or to release the grip state. A driving source (not shown) for driving the finger 50 may be embedded in the finger 50 or embedded in the robot arm 515.

The measuring unit 20 includes a lead shield box 21 having a door 23 that can be opened and closed. The measurement of the gamma ray with respect to the sample container 3 is carried out directly inside the lead shield box 21. The sample storage unit 30 includes a rotation disk 315 spaced apart from the lead shield box 21 at one side of the guide unit and having a plurality of mounting grooves along which the sample container 3 is mounted, And a rotating disk 315 driving means.

4A and 4B, the measuring unit 20 and the sample storage unit 30 are disposed in parallel to each other in the longitudinal direction along the transverse guide 411, 515 are limited to the distance between the lead shield box 21 and the sample storage part 30, the movement path of the sample container 3 can be minimized.

Particularly, since the sample storage part 30 is formed with the seating groove on which the sample container 3 is seated along the rim of the rotary master 31, even if the robot arm 515 is not moved, the rotary master 31 is rotated, The moving distance of the robot arm 515 can be further minimized due to the rotation disc 31 since the container 3 is moved to the position of the fingering 50. [

5, when the arrangement of the mounting grooves formed on the rotary disk 31 is arranged radially symmetrically with respect to the center of the rotary disk 31 as shown in FIG. 5, The sample containers 3 can be sequentially stored in the sample storage section 30 by setting the sample containers 3 to be shifted by a distance so that the sample containers 3 are held in the finger 50 in order or the sample containers 3 after completion of the gamma ray measurement.

7, an opening groove 37 in which the rim of the rotary disk 31 is cut so that the sample container 3 can be nested, and an opening groove 37 in which the lower portion of the sample container 3 is supported And a container supporting plate 33 fixed to the lower portion of the rotary disk 31.

Although not shown in detail, the vessel support plate 33 is fixedly coupled to the lower portion of the rotary disk 31 to support the load of the sample vessel 3, as in FIG.

Meanwhile, the finger fingers 50 may be composed of an upper finger 511 and a lower finger 513 which can independently grasp and release the sample container 3 as shown in FIG. The upper fingers 511 and the lower fingers 513 perform gripping operations independently of each other so that the sample vessel 3 can be stably gripped while the gap between the upper finger 511 and the lower finger 513 The sample container 3 is formed to be larger than the thickness of the rotation disc 31 so that the sample container 3 can be pulled out more stably when the sample container 3 is pulled out from the rotation disc 31.

<Second Embodiment of Sample Storage Unit>

Referring to FIG. 7, the sample storage unit 30 of the present invention may be formed by stacking the rotation discs 31 in multiple stages in order to store a larger amount of sample containers 3.

At this time, the rotating disc 31 is formed such that the upper rotating disc is smaller in diameter than the lower rotating disc, and the rotating disc disposed at the upper portion and the rotating disc disposed at the lower portion are independently rotatable. This is because the sample vessels 3 are not arranged at a predetermined interval but are spaced at a certain distance, so that the rotation angle of the rotation disc is changed in order to sequentially draw the sample vessels according to the position of the rotation disc.

In this case, as shown in FIG. 7, a shielding enclosure 350 may be provided to surround the entirety of the sample storage part 30 so as to shield the emission of gamma rays from the sample container 3. At this time, a withdrawal window 360 for withdrawing the sample container 3 may be formed in the shielding housing 350.

Next, a third embodiment of the sample storage unit and the sample storage unit of the present invention will be described.

&Lt; Third Embodiment of Sample Storage Unit >

The configuration of the gamma ray automatic measuring apparatus in the third embodiment is different from that of the basic embodiment and the second embodiment in the sample storage unit 60 and the fingering unit 50.

8, in the sample storage part 60 of the second embodiment, an insertion groove 631 penetrating from the top to the bottom so as to insert the sample container 3 is formed, and the inner wall of the insertion groove 631 A plurality of container boxes 63 to which an elastic member 633 for pressing and supporting the side surface of the sample container 3 is attached and a frame 61 for supporting the container box 63.

The container box 63 is provided with an elastic member 633 on the inner wall of the insertion groove 631 formed so as to penetrate from the upper surface to the lower surface of the container box 63 so that the sample container 3 is inserted from the upper portion of the insertion groove 631 It can stay inside the insertion groove 631 without falling down due to the elastic member 633. At this time, the stability that the sample container 3 can stay in the insertion groove 631 may vary depending on the thickness of the elastic member 633 and the selection of the material. In this case, the ease of drawing out the sample container 3 should also be considered.

FIG. 9A is a conceptual diagram illustrating the principle that the container box 63 can be inserted into the upper portion of the insertion groove 631 and stored in the insertion groove 631. FIG.

The finger portion in the second embodiment is configured in a special form in order to easily pull out the sample container 3 from the container box 63. [

As shown in FIG. 9B, the upper finger 521 has two curved surfaces facing each other so that the sample container 3 can be grasped or released. Since the operation mechanism of the robot arm and the robot finger belongs to the known technology, detailed description thereof will be omitted here. However, as shown in FIG. 9B, the upper finger 521 extends upwardly from the robot arm 525 itself.

The reason that the upper finger 521 is extended is that the upper end of the upper finger 521 can be inserted into the insertion groove 631 of the container box 63 from below as shown in Fig. In addition, unlike the first embodiment, the upper finger 521 is provided with a variable bottom plate 523 which is not a finger for performing a gripping function but is variable. The variable bottom plate 523 can be landed when the sample container 3 is pulled out from the insertion groove 631 as shown in Fig. 9C. In this case, a cushion 524 may be provided on the upper surface of the variable bottom plate 523 so that impact of landing is minimized.

The process of withdrawing the sample container 3 from the container box 63 is shown in Fig. 9C in order.

When the sample container 3 is drawn out from the insertion groove 631 and then the sample container 3 is placed inside the lead shield box 21, the sample container 3 is connected to the lead shield box 21) can not be landed on the inner bottom.

Although not shown, the variable bottom plate 523 may be rotatable around a fixed point outside the variable bottom plate 523 to prevent such a phenomenon. If the upper finger 521 firmly grasps the sample container 3 at the moment when the variable bottom plate 523 is rotated such that the sample container 3 can not follow the variable bottom plate 523 when the variable bottom plate 523 is rotated, The upper finger 521 which holds the sample container 3 at the same time is separated from the sample container 3 so that the sample container 3 can be separated from the sample container 3, The sample container 3 can be released only after landing on the inner bottom of the sample container 21.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. It will be apparent to those of ordinary skill in the art.

3: sample container 10: table
20: measuring part 21: lead shield box
23: door 25: reinforcing rib
27: moving plate 30, 60: sample storage unit
31: rotating disk 33: container supporting plate
35: storage bottom plate 37: opening groove
50: Ping Deny 61: Frame
63: container box 311: first rotating disk
313: second rotating disc 315: third rotating disc
350: Shielded enclosure 360: Drawout window
411: transverse guide 413: transverse driving means
415: horizontal moving body 421: longitudinal guide
423 Vertical drive means 431 Vertical guide
433: Vertical driving means 511, 521:
513: Lower finger 515, 525: Robot arm
523: Adjustable base plate 524: Cushion
631: insertion groove 633: elastic member

Claims

A table;
A variable robot arm portion provided at an upper portion of the table and including guiding means including a lateral guide, a longitudinal guide and a vertical guide, a robot arm provided on the guiding means, and driving means for varying the robot arm along the guiding means;
A finging coupled to an end of the robot arm and having a joint capable of gripping a sample container for gamma ray measurement;
A measuring unit disposed at one side of the guide unit and including a lead shield box for measuring gamma rays and a door for opening and closing the lead shield box; And
And a sample storage part including a rotating disk, which is spaced apart from the lead shield box at one side of the guide unit, and in which a plurality of seating grooves are formed along the rim, Automatic measuring device.

The method according to claim 1,
Wherein the guide means comprises a transverse guide provided on an upper portion of the desk, a vertical guide varying along the transverse guide, and a longitudinal guide varying up and down along the vertical guide, wherein the measuring portion and the sample storage portion Wherein the gamma ray measuring device is arranged in a line along the main scanning direction.

The method according to claim 1,
Wherein the seating groove is formed to be radially symmetrical along the rim of the rotary disk.

The method of claim 3,
Wherein the mounting groove has an opening groove formed in a periphery of the rotation disc so that the sample container can be contained therein and a container support plate fixed to the lower portion of the rotation disc to support the lower portion of the sample container, Wherein the measuring unit is rotatable by a predetermined distance.

The method according to claim 1,
Wherein the finger portion comprises an upper finger and a lower finger which are gripped and released independently of each other, and an interval between the upper finger and the lower finger is greater than a thickness of the rotation disk.

The method according to claim 1,
Wherein the door of the measurement unit varies along the transverse guide to open and close the lead shield box.

The method according to claim 1,
Wherein the rotating disk has a plurality of stages, and the diameter of the lower rotating disk is larger than the diameter of the upper rotating disk.

A desk;
A robot arm provided on the desk; guide means including a longitudinal guide and a vertical guide for guiding the robot arm so as to be variable in the vertical and vertical directions, a driving means for varying the robot arm along the guide means, A variable robot arm portion;
A finging coupled to an end of the robot arm and having a joint capable of gripping a sample container for gamma ray measurement;
A measuring unit disposed at one side of the guide unit and including a lead shield box for measuring gamma rays and a door for opening and closing the lead shield box; And
An insertion groove is formed at one side of the guide means so as to be spaced apart from the lead shield box and penetrate from the top to the bottom so as to insert the sample container. An elastic member for pressing and supporting the side surface of the sample container is attached to the inner wall of the insertion groove And a sample storage part comprising a plurality of container boxes for holding the container box and a frame for supporting the container box.

9. The method of claim 8,
Wherein the finger unit comprises an upper finger for grasping or releasing the sample container, and a variable bottom plate having a cushion on the upper surface thereof, wherein the upper finger is formed in a cylindrical shape with the rim extending upward.

10. The method of claim 9,
And the upper finger is inserted into the insertion groove from the lower portion of the container box to perform the releasing operation, thereby pressing the elastic member outwardly to expand the insertion groove, thereby landing the sample container on the variable bottom plate.