CN217213178U - Screening system for radiation dose detector - Google Patents

Abstract

The utility model discloses a screening system of a radiation dose detector, which comprises a radioactive source, a material tray, a base and a base platform; a laser ranging module is arranged in the radioactive source; the material tray is of a three-layer laminated structure and consists of two outer baffles and a limiting baffle clamped between the two outer baffles, and the limiting baffle comprises three types; the material tray is fixed on the height-adjustable base station through the base; the base comprises a first base and a second base, the first base and the second base respectively comprise a bottom plate and vertical plates, and the two vertical plates clamp the bottom of the material tray to enable the material tray to keep upright; the base station comprises a movable substrate, a positioning hole for placing a positioning scale is formed in the center of the movable substrate, and a plurality of angle identification lines are radiated from the center of the positioning hole to the periphery. The utility model discloses a brand-new structural design, the location is accurate, and convenient to use realizes the screening of the radiation dose detector of multiple different grade type.

Description

Screening system for radiation dose detector

Technical Field

The utility model relates to a radiation dose measurement field specifically is a radiation dose detector screening system.

Background

In order to ensure the consistency of the radiation dose detector to the ray response result, an important procedure, namely screening, needs to be performed before the detector is installed on a dosimeter or dose test. The conventional radiation dose detector consistency mode is that a certain number of detectors (circular sheet, glass tube or square) in the same batch are placed in a closed container side by side and fixed, then the whole detector is placed at a certain distance from a radioactive source for ray irradiation, then the radiation dose detector is measured on the same measuring and reading instrument, and the detectors with basically consistent measured data are reserved for use. In the process of irradiating the radiation source by the radiation source, the uniform distribution of the dose detectors in the radiation field is ensured, and the center of the radiation field is also ensured to be coincident with the center of the area for placing the dose detectors, so that each dose detector is ensured to receive the same amount of radiation dose. However, in the actual screening process, the process of accurately positioning the placement position of the dose detector is complicated and is not easy to implement.

Chinese patent application No. 2019113882510 provides a thermoluminescence irradiation wafer selecting device, which mainly comprises an upper cover plate, a lower cover plate, screw holes and sample slots, wherein a plurality of sample slots are uniformly distributed on the lower cover plate, a plurality of screw holes are arranged above the upper cover plate, and the upper cover plate and the lower cover plate are fixedly connected by screws passing through the screw holes. The device fixes the thermoluminescence in a specific single thermoluminescence sheet groove, the phenomena of overlapping and the like can not occur in the process of being arranged in an irradiator, the stable and reliable screening result is ensured, and the device can be parallel or vertically arranged under any radiation irradiation device for effective irradiation because the bottom is wider and the periphery is smooth. The device can be used for putting and fixing the thermoluminescent detector, but is limited by the type and the quantity of the placed detectors, and meanwhile, the angle of the detector to rays cannot be adjusted, and the device also has the functions of simply installing, putting and conveniently transferring the detector. In addition, the preliminary experimental research on electron balance in the pyroelectric detector scale published in the journal of metrology of 12 months in 2011 definitely proposes that a material with an electron balance thickness should be provided in the process of the pyroelectric detector scale, and the comparison document cannot realize the above.

In view of this, a radiation dose detector screening system needs to be designed, which is suitable for screening various types of detectors, and can select different irradiation angles according to requirements, so that the detectors can be conveniently mounted and transferred while being conveniently placed and fixed, and the radiation dose detector screening system can perform batch irradiation, thereby improving the screening efficiency. In addition, the outer baffle plates with different thicknesses can be adjusted according to different ray energies of the actual field irradiation field.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve above technical problem, provide a radiation dose detector screening system.

In order to achieve the above object, the utility model provides a following technical scheme:

a radiation dose detector screening system comprises a radiation source, a material tray, a base and a base station; a laser ranging module is arranged in the radioactive source; the material tray is of a three-layer laminated structure and consists of two outer baffles and a limiting baffle clamped between the two outer baffles, and the limiting baffle comprises three types; the material tray is fixed on the height-adjustable base station through the base; the base comprises a first base and a second base, the first base and the second base respectively comprise a bottom plate and vertical plates, and the two vertical plates clamp the bottom of the material tray to enable the material tray to keep upright; the base station comprises a movable substrate, a positioning hole for placing a positioning scale is formed in the center of the movable substrate, and a plurality of angle identification lines are radiated from the center of the positioning hole to the periphery.

Further, limit baffle is the same with outer baffle size, and is surfacing, the even panel of thickness.

Furthermore, the base station still includes main base plate, and main base plate edge is equipped with many spinal branchs post, and the support column outer wall forms the screw thread and nested nut, and the activity base plate wears to establish on many spinal branchs posts.

Furthermore, a horizontal bubble is arranged on the upper surface of the movable substrate.

Furthermore, the positioning scale body is cylindrical, and the outer wall of the positioning scale body is provided with a first scale mark parallel to the central axis of the positioning scale body and a plurality of second scale marks vertical to the first scale mark; a tray is formed at the lower part of the positioning scale, and a third scale line is formed on the side wall of the tray; the central axis, the first scale mark and the third scale mark of the positioning scale are positioned on the same plane; the numerical value corresponding to each second scale mark is the vertical height from the scale mark to the bottom surface of the tray.

Furthermore, a fourth scale mark is arranged between the bottom plates of the first base and the second base.

Further, the limit baffle comprises the following types:

type B1: a circular hollow part is formed in the middle of the limiting baffle, a notch is formed in the upper edge of the limiting baffle, and the hollow part is communicated with the outside through the notch;

type B2: a plurality of strip-shaped hollow parts are formed on the limiting baffle;

type B3: a plurality of square hollow parts are formed on the limiting baffle;

each type of limiting baffle is divided into a plurality of specifications according to the different thicknesses of different types of detectors to be placed; the limiting baffle plates are provided with parameter marks for indicating the thickness and the length L from the center to the edge of the bottom edge.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a charging tray is applicable to and places multiple type dose detector, also is convenient for operate in batches, and the center of penetrating the wild is fixed a position easily moreover, can guarantee that all detectors of treating the screening can evenly accept to shine. The utility model discloses can save the process for dose detector's manufacture factory, shine unit, dose monitoring unit screening detector, raise the efficiency.

Drawings

FIG. 1 is a schematic view of the structure of the tray of the present invention;

fig. 2 is a schematic structural diagram of a middle limit baffle of the present invention (type B1);

fig. 3 is a schematic structural diagram of a middle limit baffle of the present invention (type B2);

fig. 4 is a schematic structural diagram of a middle limit baffle of the present invention (type B3);

FIG. 5 is a schematic structural view of the outer baffle of the present invention;

fig. 6 is a schematic structural diagram (assembled state) of the base of the present invention;

fig. 7 is a schematic structural diagram (disassembled state) of the base of the present invention;

fig. 8 is a schematic structural view of the middle base station of the present invention;

fig. 9 is a schematic structural diagram of a screening system according to the present invention;

fig. 10 is a schematic structural view of a positioning scale according to the present invention;

fig. 11 is a top view of an adjustable B1 type limit baffle according to the present invention;

fig. 12 is a schematic structural view of the ring-shaped baffle of the present invention;

fig. 13 is a schematic structural view of the combined material tray and base of the present invention.

Wherein, 1, a limit baffle; 101. an annular baffle; 2. an outer baffle; 3. a first base; 4. a second base; 5. a balancing weight; 6. a movable substrate; 7. a support pillar; 8. a main substrate; 9. a nut; 10. horizontal bubble; 11. a radioactive source; 12. positioning a scale; 13. an angle marking line; 14. a tray; 15. a third scale line; 16. a fourth tick mark.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1 to 13, a screening system for a radiation dose detector includes a radiation source 11, a tray, a base and a base; a laser ranging module is arranged in the radioactive source 11; the material tray is of a rectangular three-layer laminated structure and consists of two outer baffles 2 and a limiting baffle 1 clamped between the two outer baffles, and the limiting baffle 1 comprises three types; the material tray is fixed on the height-adjustable base station through the base; the base comprises a first base 3 and a second base 4, the first base 3 and the second base 4 both comprise a bottom plate and vertical plates, and the two vertical plates clamp the bottom of the material tray to keep the material tray upright; the base station comprises a movable substrate 6, a positioning hole for placing a positioning scale 12 is formed in the center of the movable substrate 6, and a plurality of angle identification lines 13 are radiated from the center of the positioning hole to the periphery. The base station is arranged on the horizontal desktop, and the whole weight is relatively heavy, so that the stability of placing the material tray is facilitated. The angle marking lines 13 are as many as possible, at least one is needed every 10 degrees, and the positions of the line ends are marked with corresponding angle numerical values, so that the angle marking lines are convenient to search in use.

The length and width sizes of the limiting baffle 1 and the outer baffle 2 are the same, and the limiting baffle and the outer baffle are all plates with smooth surfaces and uniform thickness. Limiting baffle 1 and 2 four sides of outer baffle all are equipped with the fixed orifices that a plurality of morphemes match, can press from both sides it tightly through bolt and nut when constituteing the charging tray, realize fixedly. The outer baffle 2 can be set to various specifications according to different thicknesses, and the outer baffle 2 is selected to be suitable according to different types of radioactive sources during use.

The base station further comprises a main substrate 8, a plurality of support columns 7 are arranged on the edge of the upper surface of the main substrate 8, threads are formed on the outer walls of the support columns 7, nuts 9 are embedded in the threads, the tops of the support columns 7 penetrate through the movable substrate 6, and the movable substrate 6 is erected on the nuts 9. The upper surface of the movable base plate 6 is smooth and flat and is used for placing a base.

The first base 3 and the second base 4 are both provided with a balancing weight 5, two limiting grooves are formed on a vertical plate of the first base 3, and a side baffle matched with the limiting grooves in shape and position is formed on a vertical plate of the second base 4; the two side baffles clamp the material tray from the side. The function of the balancing weight is to make the whole device more stable; the side shield inserts in the spacing groove to after the base was put into to the charging tray, two side shields and two risers pressed from both sides tight charging tray bottom from the four sides, made the charging tray keep upright, and stability is higher. The vertical plate is also provided with fixing holes which are consistent in size and matched in shape and position with the fixing holes in the lower edges of the limiting baffle 1 and the outer baffle 2, and therefore integral fixation can be achieved through bolts and nuts conveniently.

The upper surface of the movable base plate 6 is provided with a horizontal bubble 10. According to the instruction of the level bubble 10, the rotating nut 9 is finely adjusted to ensure the level of the base station.

The positioning scale 12 is cylindrical, and the outer wall of the positioning scale is provided with a first scale mark parallel to the central axis of the positioning scale and a plurality of second scale marks perpendicular to the first scale mark; a tray 14 is formed at the lower part of the positioning scale 12, and a third scale mark 15 is formed on the side wall of the tray 14; the central axis, the first scale mark and the third scale mark 15 of the positioning scale 12 are positioned on the same plane; each second tick mark corresponds to a reading of the vertical height difference of that tick mark from the bottom surface of the tray 14.

And a fourth scale mark 16 is arranged between the bottom plates of the first base 3 and the second base 4, corresponds to the angle marking line 13 and adjusts the required irradiation angle.

The limit baffle 1 comprises the following types:

type B1: a circular hollow part is formed in the middle of the limiting baffle 1, a gap is formed in the edge of the upper side of the limiting baffle 1, and the hollow part is communicated with the outside through the gap; the gap can be used for placing a radiation dose detector;

type B2: a plurality of strip-shaped hollow parts are formed on the limiting baffle 1;

type B3: a plurality of square hollow parts are formed on the limiting baffle 1;

each type of limiting baffle 1 is divided into a plurality of specifications according to different thicknesses; the limiting baffle 1 is provided with parameter marks for indicating the thickness and the length L from the center to the bottom edge. The principle of selecting the limiting baffle 1 is that the height of the radiation dose detector to be measured is slightly smaller than the thickness of the limiting baffle 1. The reasons for this selection are: if the height of the radiation dose detector is larger than the thickness of the limiting baffle 1, the radiation dose detector cannot be placed in the material tray; if the height of the radiation dose detector is far less than the thickness of the limit baffle 1, the radiation dose detector may be overlapped to cause uneven arrangement.

The use method of the radiation dose detector screening system comprises the following steps:

s1: selecting a limit baffle 1 with a proper specification according to the type and the number of the dose detectors to be measured, and recording the length L parameter of the limit baffle 1; for the B1 type limit baffle 1, firstly, the limit baffle is combined with the outer baffle 2, placed in the base and locked and fixed, and the dose detector is placed in a gap formed at the edge of the upper side of the limit baffle 1; for the B2 or B3 type limit baffle 1, firstly, the limit baffle is placed on one outer baffle 2, then a dose detector is placed in the hollow part of the limit baffle, the other outer baffle 2 is covered, and finally, the combined material disc is placed in a base to be locked and fixed;

s2: the base station is arranged in front of a radioactive source 11, and a positioning scale 12 is inserted into a positioning hole in the center of a movable substrate 6; starting the laser ranging module, moving the base station to make the light spot irradiate on the positioning scale 12; according to the indication of the horizontal bubble 10, finely adjusting the rotary nut 9 and adjusting the level of the base station; according to the reading of the ranging module, the distance between the base station and the radioactive source 11 is adjusted to meet the test requirement;

s3: the nut 9 is rotated to adjust the height of the movable substrate 6, so that the reading value on the second scale mark corresponding to the light spot is equal to L; rotating the positioning scale 12 to make the light spot be positioned on the first scale mark; in this step, the final state of the movable substrate 6 is ensured to be a horizontal state according to the indication of the horizontal bubble 10 when the movable substrate 6 is adjusted; recording an angle marking line 13 corresponding to the third scale mark 15, and taking the angle marking line 13 as a reference angle line;

s4: taking down the positioning scale 12, placing the base and the tray on the movable substrate 6, so that the fourth scale mark 16 is aligned with the reference angle line recorded in the step S3, and meanwhile, the limit baffle 1 is positioned on another angle mark line 13 perpendicular to the reference angle line;

as shown in fig. 13, the tray and the base are combined and placed on the movable base plate 6, in the figure, AA 'and BB' are both angle marks 13, and AA 'and BB' are perpendicular to each other (for convenience of description, the remaining angle marks 13 are not drawn). In the adjusting process of step S3, taking AA 'as a reference angle line, and positioning the limit baffle 1 on BB';

s5: starting the radioactive source 11, and selecting proper irradiation time to irradiate the dose detector in the tray according to the size of the irradiation dose;

s6: closing the radioactive source 11, taking out the dose detector in the material tray, measuring the detector and reading data; and then calculating the average value of the readings of the detectors, wherein the detectors with the readings in the range of the average value x (1 +/-A%) are used as the selection basis of the A% consistency detector, and the screening work of the detectors is finished. After one irradiation is finished, the readings of all the detectors are summed and divided by the number of the detectors, and the average value Do of the readings can be obtained. Then a detector with a reading range within (1 ± a%) x Do is defined as a detector with a% identity, a can be 1, 2, 3, 4, 5 or 10. If A is 1, the detector with the reading value in the range of (1-1%) multiplied by Do to (1+ 1%) multiplied by Do is the detector with 1% consistency; if A is 2, the detector with the reading value in the range of (1-2%) multiplied by Do to (1+ 2%) multiplied by Do is the detector with the consistency of 2%.

Example 1:

of the three types of limit stop 1, the type B1 is most commonly used, and in use, the illuminated detector should be concentrated as much as possible in the hollow in the middle of the limit stop 1, optimally filling the area. Because the quantity of screening dose detector is indefinite, consequently the area of the fretwork portion in the middle of limit baffle 1 can be made adjustable as required. As shown in fig. 11, the B1 type retainer flapper 1 may be filled with a plurality of ring-shaped flapper 101 having notches of different sizes, and the ring-shaped flapper 101 may have a configuration as shown in fig. 12, in which the width of each ring is in the range of 5mm to 1 cm. If the number of the detectors to be irradiated is small, the number of the annular baffles 101 is increased, so that the area of a hollow part in the middle is reduced; conversely, reducing the number of the ring-shaped baffles 101 increases the area of the central hollow portion.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. A radiation dose detector screening system comprises a radiation source (11), a material tray, a base and a base station; a laser ranging module is arranged in the radioactive source (11); the tray is characterized in that the tray is of a three-layer laminated structure and consists of two outer baffles (2) and a limiting baffle (1) clamped between the outer baffles, and the limiting baffle (1) comprises three types; the material tray is fixed on the height-adjustable base station through the base; the base comprises a first base (3) and a second base (4), the first base (3) and the second base (4) respectively comprise a bottom plate and vertical plates, and the two vertical plates clamp the bottom of the material tray to enable the material tray to keep upright; the base station comprises a movable substrate (6), a positioning hole for placing a positioning scale (12) is formed in the center of the movable substrate (6), and a plurality of angle identification lines (13) are radiated from the center of the positioning hole to the periphery.

2. The screening system of claim 1, wherein the limiting baffle (1) and the outer baffle (2) have the same size and are both flat-surfaced and uniform-thickness plates.

3. The radiation dose detector screening system of claim 1, wherein the base further comprises a main substrate (8), a plurality of support pillars (7) are arranged on the edge of the main substrate (8), the outer walls of the support pillars (7) are threaded and nuts (9) are nested, and the movable substrate (6) is arranged on the plurality of support pillars (7) in a penetrating manner.

4. A radiation dose detector screening system according to claim 1, wherein said movable base plate (6) is provided with a level bubble (10) on its upper surface.

5. A radiation dose detector screening system according to claim 1, wherein said positioning scale (12) body is cylindrical and has an outer wall provided with a first graduation mark parallel to its central axis and a plurality of second graduation marks perpendicular to the first graduation mark; a tray (14) is formed at the lower part of the positioning scale (12), and a third scale line (15) is formed on the side wall of the tray (14); the central axis, the first scale mark and the third scale mark (15) of the positioning scale (12) are positioned on the same plane; the numerical value corresponding to each second scale mark is the vertical height from the scale mark to the bottom surface of the tray (14).

6. A radiation dose detector screening system according to claim 1, wherein a fourth graduation mark (16) is provided intermediate the base plates of the first (3) and second (4) bases.

7. A radiation dose detector screening system according to claim 1, characterized in that said limiting baffles (1) are of the type:

type B1: a circular hollow part is formed in the middle of the limiting baffle (1), a notch is formed in the upper edge of the limiting baffle (1), and the hollow part is communicated with the outside through the notch;

type B2: a plurality of strip-shaped hollow parts are formed on the limiting baffle (1);

type B3: a plurality of square hollow parts are formed on the limiting baffle (1);

each type of limiting baffle (1) is divided into a plurality of specifications according to different thicknesses of different types of detectors to be placed; the limiting baffle (1) is provided with parameter marks for indicating the thickness and the length L from the center to the edge of the bottom edge.

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