CN212284095U - Point source irradiation rack for large batch of samples - Google Patents
Point source irradiation rack for large batch of samples Download PDFInfo
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- CN212284095U CN212284095U CN202020676190.XU CN202020676190U CN212284095U CN 212284095 U CN212284095 U CN 212284095U CN 202020676190 U CN202020676190 U CN 202020676190U CN 212284095 U CN212284095 U CN 212284095U
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Abstract
The utility model relates to a large batch sample point source irradiation frame, which comprises a plurality of fan-shaped supporting surfaces which are horizontally arranged at intervals along the same vertical axial lead, and a plurality of concentric circular arc line marking scales are arranged on each fan-shaped supporting surface at intervals; and the plurality of support rods are vertically supported and connected around the plurality of fan-shaped support surfaces. The utility model provides a big sample point source radiation frame, but the at utmost utilizes radiation field value space, practices thrift and puts, withdraws the sample time to both can realize the big high dose radiation in batches of point radiation source, can make the object of illumination can safely leave the radiation source fast after the irradiation again, solved the difficult problem of waiting urgently to solve in this type experiment, make the efficiency of the experiment effectively improve, the experiment is carried out more scientific and reasonable, and the data result is more accurate.
Description
Technical Field
The utility model belongs to the technical field of experimental device, concretely relates to big sample point source irradiation frame in batches.
Background
The role of ionizing radiation in human production and life is more and more obvious, and the potential harm to people is more and more widely taken as a double-edged sword. The radiobiological research is the foundation for promoting the radiation protection, and the research result has important theoretical significance and application value in the formulation of radiation protection limit values and the evaluation of radiation protection effect. In such studies, the radiobiological effect is closely related to factors such as the type of radiation, the location, the dose rate, and the surrounding material environment of the irradiation model. In a specific experiment process, cell strains, nematodes, experimental animals and the like are often selected as research objects.
Neutrons play a core role in a variety of nuclear facilities, such as reactors. The neutral charge of the material has high penetrability, and is easy to cause various secondary nuclear reactions, generate charged particles and form recoil ions to cause serious biological injury effect. Therefore, the influence of neutron radiation on human health is receiving more and more attention, and the development of neutron radiation protection research is an important issue in the industry. However, the worldwide research on neutron radiation effect and mechanism is relatively small, and the main reason is that: one is that neutron sources capable of producing sufficient flux are scarce and neutron radiation fields are precious. In order to fully utilize the space of a radiation field and ensure that each treatment group reaches a preset dose, distance measurement and sample placement are required to be carried out at least 1 hour in advance in the conventional neutron animal and cell radiation experiment process; because the number of samples is too many and the measurement precision is limited, the irradiation dose of each batch of samples is difficult to realize to be consistent. Secondly, due to the influence of residual rays of induced radioactivity, materials cannot be taken immediately after radiation to conduct experimental exploration in a short time. In a high-energy neutron radiation experiment, high-energy neutrons ionize substances such as air, earth and materials in a field, induced radioactivity is caused, and the field can reach an allowable dose rate level only after at least 1 hour of air exhaust and noise reduction (noise reduction time is determined according to different doses), so that the key research on biological effects and mechanisms in a short time after comparison is severely limited.
How to enable a large batch of samples to be irradiated accurately with enough dosage in the neutron animal and cell radiation experiment process and realize that the samples can leave a radiation source quickly after irradiation, is a problem to be solved urgently in neutron radiation biological effect and biological protection experiments.
SUMMERY OF THE UTILITY MODEL
Consequently, to in the current ionizing radiation experimentation, the sample such as animal, cell is put that measurement accuracy is not high, can't realize that big batch samples can obtain the technical problem of shining of accurate dose, the utility model aims at providing a big sample point source irradiation frame in batches, the utility model discloses a big sample point source irradiation frame in batches can realize the space orientation of batch samples and discharge, can obtain shining of accurate dose.
The utility model discloses a big sample point source irradiation frame includes:
the device comprises a plurality of fan-shaped supporting surfaces which are horizontally arranged at intervals along the vertical axis, and a plurality of concentric circular arc line marking scales are arranged on each fan-shaped supporting surface at intervals;
and the plurality of support rods are vertically supported and connected around the plurality of fan-shaped support surfaces.
The utility model discloses a big sample point source irradiation frame design principle in batches is as follows:
the equivalent dose H received by an organism within a radiation field can be calculated approximately as follows:
H＝X·t
from this, the total dose can be calculated by determining the dose rate X. And the X of a certain point in the point source radiation field is reduced along with the increase of the linear distance from the radioactive source, and the following inverse square relation is satisfied:
X＝·A/L2
where A is the radioactivity of the source, the fluence rate constant, and L is the linear distance from the point source.
Thus, in a given irradiation event where the point source irradiation parameters are known, if L is measured, H can be calculated.
The utility model discloses in, each coaxial axis of fan-shaped holding surface is arranged, each during the use by interior outside along each on the fan-shaped holding surface a plurality of samples can be placed to the arc line mark scale, then will big sample point source irradiation frame removes to the irradiation position, the radiation point source (including but not limited to neutron point source, cobalt point source)60An ionizing radiation source including an isophotonic point source and the like) is positioned at the axial lead, the radiation point source is surrounded by the sample in a multi-layer manner from top to bottom and from front to back, and the radiation is received and irradiated in a multi-layer manner, so that the utilization rate of rays such as neutrons is greatly improved, the precious space of a radiation field can be utilized to the maximum degree, and the time for placing and removing the sample is saved. And the distances between each point on the same circular arc line marking scale on each fan-shaped supporting surface and the radiation point source are the same, so that the unit time has the same irradiation dose, when the heights of the radiation point source and the large-batch sample point source irradiation frame are unchanged, the irradiation dose of the unit time on the circular arc line marking scale is unchanged, the actual length of each circular arc line marking scale from the point source can be accurately calculated and marked according to the principle, and further the irradiation dose of the unit time and the total irradiation dose can be accurately calculated.
In order to facilitate the positioning of the large-batch sample point source irradiation rack, the radiation point source is positioned at the axial lead of the plurality of fan-shaped supporting surfaces, specifically, positioning pins, positioning holes or other positioning mechanisms can be arranged in front of the radiation point source or on the floor, and the large-batch sample point source irradiation rack can be correspondingly provided with the positioning holes, the positioning pins or other positioning mechanisms to complete matching positioning.
Additionally, big sample point source irradiation frame simple structure in batches, light in weight consequently removes lightly, and the sample can leave the radiation source rapidly thereupon after shining.
In order to further improve the convenience of movement, it is preferable that the bottom of the mass sample point source radiation rack is provided with wheels, and the wheels are arranged to make the mass sample point source radiation rack move more quickly.
Preferably, each fan-shaped supporting surface is arranged at equal intervals from top to bottom. When the height of the radiation point source is in the middle position, the fan-shaped supporting surfaces are symmetrical up and down, so that the marks of the arc lines with the same irradiation dose are arranged up and down, when the sample amount is large, the sample can be placed up and down, and the accuracy and the uniformity of the irradiation dose can be accurately controlled.
The fan-shaped support surface can be adjusted in shape according to the position of the radiation point source so as to be capable of fully enclosing the radiation point source and simultaneously ensuring that each position on the fan-shaped support surface is within the irradiation range.
Preferably, the central angle of the fan-shaped supporting surface is 120 to 300 degrees, preferably 150 to 240 degrees, and more preferably 180 to 210 degrees.
The fan-shaped supporting surface can be a complete fan shape, i.e. a straight edge extends to a central angle, and a preferable scheme is that the fan-shaped supporting surface is in a semicircular shape.
The fan-shaped supporting surface can also be a fan shape with the center being scratched off, namely a straight edge does not extend to a central angle and is similar to the shape of a folding fan surface.
In both cases, the straight edges are all radius edges, i.e. the straight edges or the extension lines thereof do not pass through the center of a circle; in other embodiments of the present invention, the straight edge of the fan-shaped supporting surface may not be a straight edge, i.e. the straight edge or the extension line thereof does not pass through the center of the circle. Typically, for example, the central angle of the fan-shaped supporting surface is less than 180 °, the straight edge between the two ends of the outer arc edge does not pass through the central angle, and the whole fan-shaped supporting surface is in an arc shape.
Preferably, the fan-shaped supporting surface is detachably connected with the supporting rod; each fan-shaped supporting surface is a detachable splicing type panel and is formed by assembling a plurality of small fan-shaped plates. The detachable arrangement can be convenient for get and put the sample.
Preferably, a plurality of limiting mechanisms are arranged on the fan-shaped supporting surface at intervals along the circular arc line scale marks. Stop gear is used for sample container's fixed, and sample container includes blake bottle, culture dish, beaker, test tube, centrifuging tube, cage utensil etc..
Preferably, the limiting mechanism is a bump, a groove, a through hole, a peripheral ring limiting protrusion or protrusions distributed at intervals along the peripheral ring. Other possible configurations are possible.
Preferably, a plurality of fixed cages are arranged on the fan-shaped supporting surface.
Furthermore, the upper and lower bottom plates of the fixed cage are provided with ventilation openings.
Preferably, a plurality of intermediate supports are further arranged between the fan-shaped supporting surfaces.
Preferably, the fan-shaped supporting surface and the supporting rod are of a stainless steel structure.
The neutron capture cross-section is 2.62 x 10, depending on the iron element which has a weak scattering for ionizing radiation, in particular neutron radiation (relative to candidates such as plexiglass)-28m2And finally, the neutron radiation capture reaction is not strong, the requirements that the sample is immediately taken out after irradiation and induced radioactive damage to experimenters cannot be caused can be met, and therefore stainless steel can be selected as a main material.
The large-batch sample point source radiation frame is used in an ionization radiation laboratory (including but not limited to neutrons and cobalt60Isoionic irradiation chamber), for ionizing radiation field, because of influence of residual radiation in field caused by radiation after irradiation, personnel can not enter in short time, therefore, the radiation frame is controlled to move by adopting a remote control mode, the wheels can be provided with a driving motor, and a carrying wireless transceiver module and a remote control device are simultaneously arranged, wherein the remote control device comprises an indoor wireless transceiver module and an outdoor controller, and the outdoor controller comprises an indoor wireless transceiver module and an outdoor controllerAnd the indoor wireless transceiving module is in signal transmission with the carrying wireless transceiving module in a wired mode, and the indoor wireless transceiving module is in signal transmission with the carrying wireless transceiving module in a wireless signal mode.
The driving connection of the wheels and the motor can be realized by referring to the scheme of the conventional remote control toy car; the indoor wireless transceiver module is arranged in the ionization irradiation laboratory and is connected with the controller outside the ionization irradiation laboratory through a data line so as to carry out wired transmission, and the carrying wireless transceiver module and the indoor wireless transceiver module can adopt a commercially available conventional wireless data transmission module, such as a Bluetooth module, an RS-242, an RS-422 or an RS-485 communication module.
The utility model has the advantages as follows:
the utility model provides a big sample point source radiation frame, but the at utmost utilizes radiation field value space, practices thrift and puts, withdraws the sample time to both can realize the big high dose radiation in batches of point radiation source, can make the object of illumination can safely leave the radiation source fast after the irradiation again, solved the difficult problem of waiting urgently to solve in this type experiment, make the efficiency of the experiment effectively improve, the experiment is carried out more scientific and reasonable, and the data result is more accurate.
Drawings
FIG. 1 is a schematic diagram of a bulk sample point source irradiation rack of example 1;
FIG. 2 is a schematic diagram of the position of a large batch of sample point source irradiation shelves and neutron emitters of example 1;
FIG. 3 is a schematic diagram of a bulk sample point source irradiation rack of example 2;
FIG. 4 is a schematic view of a bulk sample point source irradiation rack of example 3;
fig. 5 is a disassembled schematic view of the fan-shaped supporting surface of the large-batch sample point source irradiation rack of the embodiment 3.
Reference numerals
Example 1: the large-batch sample point source irradiation rack comprises a large-batch sample point source irradiation rack 1, a fan-shaped supporting surface 11, a circular arc line marking scale 111, a supporting rod 12 and wheels 13; a neutron emitting head 4;
example 2: a large batch of sample point source irradiation frame 2 and a fan-shaped supporting surface 21;
example 3: the large-batch sample point source irradiation rack 3, the fan-shaped supporting surface 31 and the small fan-shaped plate 311.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that the following examples are illustrative only and are not intended to limit the scope of the present invention.
Example 1
Fig. 1 shows a large batch sample point source irradiation rack 1 according to a preferred embodiment of the present invention, which includes a plurality of fan-shaped supporting surfaces 11, a plurality of supporting rods 12 and wheels 13. The sector supporting surfaces 11 are horizontally arranged at equal intervals with the vertical axis, and a plurality of concentric circular line marking scales 111 are arranged on each sector supporting surface 11 at intervals. The supporting rod 12 is vertically supported and connected around the fan-shaped supporting surface 11, and the wheels 13 are universal wheels and are arranged at the bottom and connected with the supporting rod 12.
Wherein, two straight edges of the fan-shaped supporting surface 11 do not extend to the central angle, and are similar to the shape of a folding fan surface. The central angle of the fan-shaped supporting surface 11 in the figure is 120-150 degrees. Of course, other angles, such as 180 or even more 240, may be used, as appropriate, to substantially enclose the radiation point source while ensuring that the positions on the fan-shaped support surface are within the field of view.
Preferably, a plurality of limiting mechanisms are arranged on the fan-shaped supporting surface 11 at intervals along the circle-arc scale marks. Stop gear is used for sample container's fixed, and sample container includes blake bottle, culture dish, beaker, test tube, centrifuging tube, cage utensil etc.. Further, the limiting mechanism can be provided as a bump, a groove, a through hole, a peripheral ring limiting protrusion or a protrusion distributed at intervals along the peripheral ring, and can be any other feasible structure.
Preferably, the fan-shaped supporting surface 11 is provided with a plurality of fixed cages for holding animal samples. Furthermore, the upper and lower bottom plates of the fixed cage are provided with ventilation openings.
Preferably, a plurality of intermediate supports are arranged between the fan-shaped supporting surfaces 11, so that the stability of the irradiation rack is improved.
The utility model discloses a big sample point source irradiation frame design principle in batches is as follows:
the equivalent dose H received by an organism within a radiation field can be calculated approximately as follows:
H＝X·t
from this, the total dose can be calculated by determining the dose rate X. And the X of a certain point in the point source radiation field is reduced along with the increase of the linear distance from the radioactive source, and the following inverse square relation is satisfied:
X＝·A/L2
where A is the radioactivity of the source, the fluence rate constant, and L is the linear distance from the point source.
Thus, in a given irradiation event where the point source irradiation parameters are known, if L is measured, H can be calculated.
The utility model discloses in, 11 coaxial core lines of each fan-shaped holding surface are arranged, can place a plurality of samples along each circular arc line mark scale 111 by interior outside to on each fan-shaped holding surface 11 during the use, then with big sample point source irradiation frame 1 remove to the irradiation position in batches, the radiation point source (shown as neutron emission head 4 in the picture) is in axial lead department, as shown in fig. 2, the radiation point source is enclosed to many levels around the sample from top to bottom, multi-level receipt neutron shines, improve the utilization ratio of neutron greatly, but the maximum utilizes the radiation field valuable space, practice thrift and put, remove the sample time. And the distances between each point on the same circular arc line marking scale on each fan-shaped supporting surface and the neutron emission head 4 are the same, so that the irradiation dose in unit time is the same, when the heights of the neutron emission heads 4 and the large-batch sample point source irradiation rack 1 are unchanged, the irradiation dose in unit time on the circular arc line marking scale 111 is unchanged, the actual length of each circular arc line marking scale 111 from the point source can be accurately calculated and marked according to the principle, and the irradiation dose in unit time and the total irradiation dose can be accurately calculated.
In order to facilitate the positioning of the large-batch sample point source irradiation rack, the radiation point source is positioned at the axial lead of the plurality of fan-shaped supporting surfaces, specifically, positioning pins, positioning holes or other positioning mechanisms can be arranged in front of the radiation point source or on the floor, and the large-batch sample point source irradiation rack can be correspondingly provided with the positioning holes, the positioning pins or other positioning mechanisms to complete matching positioning.
In addition, the utility model discloses a big sample point source irradiation frame 1 simple structure in batches, light in weight consequently removes lightly, and the sample can leave the radiation source rapidly thereupon after shining. And the bottom is equipped with wheel 13, and the setting of wheel 13 makes big batch sample point source radiation frame remove convenient and fast more.
Example 2
The utility model discloses a big batch sample point source irradiation frame 2 of another preferred embodiment is shown in fig. 3, and its difference with embodiment 1 lies in fan-shaped supporting surface 21, and fan-shaped supporting surface 21 is bigger than fan-shaped supporting surface 11's surrounding degree, and fan-shaped supporting surface 21's central angle is 180 ~ 240, is fit for the comparatively convex situation of radiation point source.
Example 3
The utility model discloses a big batch sample point source irradiation frame 3 of another preferred embodiment is shown in fig. 4, and its difference with embodiment 1 lies in fan-shaped holding surface 31, and fan-shaped holding surface 31 is the semicircle panel, and the degree of enclosure lies in between fan-shaped holding surface 11 and fan-shaped holding surface 21.
Preferably, in each of the above embodiments, the fan-shaped supporting surface is detachably connected to the supporting rod; each fan-shaped supporting surface is a detachable splicing type panel and is formed by assembling a plurality of small fan-shaped plates. The detachable arrangement can be convenient for get and put the sample. Fig. 5 shows a schematic disassembled view of the fan-shaped supporting surface 31 of embodiment 3, and embodiments 1 and 2 can be designed similarly. The fan-shaped supporting surface 31 is formed by assembling 7 groups of small fan-shaped plates 311 from inside to outside, the distance between each group of small fan-shaped plates 11 and a point source is the same, the irradiation dose is also the same, and samples can be placed respectively. Concave-convex buttons can be arranged between the small fan-shaped plates 311 for positioning and connection.
While the preferred embodiments of the present invention have been described in detail, it will be understood that the invention is not limited thereto, and that various modifications and substitutions of equivalents may be made by those skilled in the art without departing from the scope of the invention as defined in the appended claims.
Claims (10)
1. A bulk sample point source irradiation rack, comprising:
the device comprises a plurality of fan-shaped supporting surfaces which are horizontally arranged at intervals along the vertical axis, and a plurality of concentric circular arc line marking scales are arranged on each fan-shaped supporting surface at intervals;
and the plurality of support rods are vertically supported and connected around the plurality of fan-shaped support surfaces.
2. The bulk sample point source irradiation rack according to claim 1, wherein the bottom of the rack is provided with wheels.
3. The bulk sample point source irradiation rack according to claim 1, wherein the central angle of the fan-shaped support surface is 120 ° to 300 °.
4. The bulk sample point source irradiation rack according to claim 1, wherein the central angle of the fan-shaped support surface is 150 ° to 240 °.
5. The bulk sample point source irradiation rack according to claim 1, wherein the fan-shaped support surface is detachably connected to the support rods; each fan-shaped supporting surface is a detachable splicing type panel and is formed by assembling a plurality of small fan-shaped plates.
6. The bulk sample point source irradiation rack according to claim 1, wherein a plurality of limiting mechanisms are arranged on the fan-shaped supporting surface at intervals along the circular line scale marks.
7. The bulk sample point source irradiation rack according to claim 6, wherein the limiting mechanism is a bump, a groove, a through hole, a circumferential ring limiting protrusion or a protrusion distributed at intervals along the circumferential ring.
8. The bulk sample point source irradiation rack according to claim 1, wherein a plurality of fixed cages are arranged on the fan-shaped supporting surface.
9. The bulk point source irradiation rack according to claim 8, wherein said fan-shaped support surfaces above and below said stationary cage are provided with ventilation openings.
10. The bulk sample point source irradiation rack according to claim 1, characterized in that it is of stainless steel construction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020676190.XU CN212284095U (en) | 2020-04-28 | 2020-04-28 | Point source irradiation rack for large batch of samples |
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| CN202020676190.XU CN212284095U (en) | 2020-04-28 | 2020-04-28 | Point source irradiation rack for large batch of samples |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114792575A (en) * | 2022-06-23 | 2022-07-26 | 邳州市安达电子有限公司 | Device for researching irradiation effect of semiconductor electronic material |
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2020
- 2020-04-28 CN CN202020676190.XU patent/CN212284095U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114792575A (en) * | 2022-06-23 | 2022-07-26 | 邳州市安达电子有限公司 | Device for researching irradiation effect of semiconductor electronic material |
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