CN110308473A - A kind of radiation detector assembly - Google Patents
A kind of radiation detector assembly Download PDFInfo
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- CN110308473A CN110308473A CN201910721236.7A CN201910721236A CN110308473A CN 110308473 A CN110308473 A CN 110308473A CN 201910721236 A CN201910721236 A CN 201910721236A CN 110308473 A CN110308473 A CN 110308473A
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
Abstract
The invention discloses a kind of radiation detector assemblies, the radiation detector assembly includes detector and shell, there is an accommodating space in shell, detector is placed in accommodating space, the thickness of shell is not less than five times of the half value thickness of corresponding ray, half value thickness is the thickness that ray energy is decayed to the substance of initial value half, is provided with the through-hole extended in accommodating space from shell exterior on shell.The present invention is only needed for detector and shell to be put into waste liquid and can be measured, and it is not necessary that Spent Radioactive liquid pool is transformed, is measured without multiple repairing weld, easy to operate, is improved measurement efficiency, is reduced costs；Influence of the outer rays to detector has been completely cut off by shell simultaneously, has improved the precision of measurement data to greatest extent.
Description
Technical field
The present invention relates to radiation detection fields, more particularly relate to a kind of radiation detection dress of radioactive liquid waste monitoring
It sets.
Background technique
As nuclear technology is in the application of medical field, more and more large size tertiary hospitals have opened up radionuclide therapy disease
Room and the treatment that various diseases are carried out using high-energy radioactive nucleic, for example, using iodine 131 nucleic to differentiated thyroid carcinoma art
Patient afterwards treats, since differentiated thyroid carcinoma tissue equally can be absorbed specifically with normal thyroid tissue
Iodine after the iodine 131 of thyroid cancer patients n of high dose oral, is taken the photograph via blood by parathyroid tissue, remaining cancerous tissue and transfer stove
It takes, the β ray that iodine 131 issues in decay process generates lethal effect to cancer cell, leads to residual cancer tissue necrosis, to drop
The recurrence of low tumor post-operation and transfer probability.But the half-life period of radionuclide iodine 131 can as used in therapeutic process
It to be up to 8.3 days, and can be flowed out with the excreta of patient, therefore, hospital would generally be by these excreta collections to radiation
Property decay pond in, the natural decay in radioactive decay pond of excreta waste liquid, to its specific activity be lower than national requirements safety limit
It can just be discharged when (such as iodine 131 is 10000Bq/L).For radioactive liquid, specific activity refers to radioactive nucleus in unit volume liquid
The activity value of element, unit are than grams per liter (Bq/L).Activity is also known as the rate of disintegration, refers to that sample decays the atom fallen within the unit time
Number.
For this purpose, needing the specific activity value in real-time monitoring radioactive decay pond within the natural decay phase of excreta waste liquid.
It includes sampling method and bypass detector method that monitoring, which has the method for radioactive excreta waste liquid, in the prior art, wherein sampling
Method is needed in measurement through the manually acquisition excreta waste liquid sample out of radioactive decay pond, then measures its volume respectively
(mL) and activity (Bq), to calculate its specific activity；Bypass detector method needs to pick out one outside at the discharge tube 1 in decay pond
Excreta waste liquid is drawn out to outside, radiation detector 3 is adjacent to be mounted on bypass duct 2 section bypass duct 2, passes through radiation
The anti-specific activity for pushing away excreta waste liquid in discharge tube 1 of measurement of detector 3, as shown in Figure 1.
However, the prior art is when being monitored the specific activity in radioactive decay pond, the prior art has at least the following problems: first
First, sampling method manual operation is cumbersome, and operator need to frequently contact dangerous radioactive liquid, and risk is higher；Secondly, sampling
Region has limitation, is typically only capable to be sampled at the liquid level in radioactive decay pond, can not really reflect entire decay pond
The specific activity situation of interior excreta waste liquid；Third, measurement result carry out data acquisition again, lead to data without real-time after sampling
Lag, can not provide real-time specific activity value；4th, bypass detector method need to modify to current existing pipeline, and installation is multiple
It is miscellaneous, it is at high cost；Finally, measured deviation is big, the radiation in environment can have an impact code detector results, and pipeline when installation
The difference of (thickness, diameter etc.) environment all can be such that the measured value of detector deviates.
Summary of the invention
The object of the present invention is to provide a kind of radiation detector assemblies, to solve the problems, such as above-mentioned at least one.
Radiation detector assembly provided by the invention, the radiation detector assembly include detector and shell, in the shell
With an accommodating space, in the accommodating space, the thickness of the shell is not less than corresponding ray for the detector accommodating
Five times of half value thickness, the half value thickness are the thickness that the ray energy is decayed to the substance of initial value half,
The through-hole extended in the accommodating space from the shell exterior is provided on the shell.
According to one embodiment of present invention, the thickness of the shell is uniform.
According to one embodiment of present invention, the shell have be arranged in parallel first shell, second shell with
And the third shell of the connection first shell and the second shell, the first shell, the second shell and described the
Three shells surround the accommodating space.
According to one embodiment of present invention, the first shell, the second shell and third shell one
Molding.
According to one embodiment of present invention, the shell uses lead, tungsten, iron, brick or concrete for making.
According to one embodiment of present invention, the through-hole extending direction formed plane and the detector where
Position is not overlapped.
According to one embodiment of present invention, be provided with insulation displacement connector on the shell, cable pass through the insulation displacement connector and
It is communicated to connect with the detector of the interior of shell, the detector sends counting rate data by the cable.
According to one embodiment of present invention, the radiation detector assembly further includes cable, and the cable passes through described logical
Hole and with the detector communicate to connect, the detector by the cable transmission counting rate data.
According to one embodiment of present invention, the detector has wireless sending module, and the detector passes through described
Wireless sending module sends counting rate data.
According to one embodiment of present invention, the through-hole totally two have spacing between two through-holes.
According to one embodiment of present invention, the extending direction of two through-holes is parallel to each other, the detector and two
The plane that the extending direction of a through-hole is formed does not overlap.
According to one embodiment of present invention, the through-hole is two rows of altogether, wherein through-hole described in each row is respectively positioned on same put down
On face, the detector is set between the plane where two rows of through-holes.
According to one embodiment of present invention, the size of through-hole described in each row is identical and spaces between uniformly.
According to one embodiment of present invention, the shell is cylindrical, and two rows of through-holes are respectively positioned on the shell
It is arranged symmetrically on side wall and about the shell, the through-hole is cylindrical hole.
According to one embodiment of present invention, spacing H > 2h (R-t)/t between two rows of through-holes, wherein h indicates institute
The diameter of through-hole is stated, R indicates that the radius of the shell, t indicate the thickness of the shell.
Radiation detector assembly provided by the invention has the advantage that firstly, monitored over time only needs sampling primary, without picture
Traditional sampling method equally need to pass through artificial sample in each monitoring, and monitoring whole process can automate record measurement data, avoid
Staff is exposed to the risk of radiation environment, improves measurement efficiency；Secondly, can be arbitrarily arranged by fixed cable depth
Sampled point can flexibly install the position of detector according to the actual situation, to reach in different depth and position sampled measurements
Purpose；Third, the present invention, which only needs a detector and shell to be put into waste liquid, to be measured, and avoid and carry out to existing pipeline
Inexpensive measurement may be implemented in any transformation；Finally, the present invention has completely cut off external environment ray to detector by shell
It influences, improves the precision of measurement data to greatest extent.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in invention, for those of ordinary skill in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the specific activity of bypass detector method measurement radioactive liquid waste according to prior art；
Fig. 2 is the stereoscopic schematic diagram of radiation detector assembly according to an embodiment of the invention；
Fig. 3 is the diagrammatic cross-section of radiation detector assembly according to fig. 2；
Fig. 4 is the stereoscopic schematic diagram of the radiation detector assembly improved according to the embodiment of Fig. 3；
Fig. 5 is the diagrammatic cross-section according to the radiation detector assembly of Fig. 4；
Fig. 6 is the stereoscopic schematic diagram of radiation detector assembly in accordance with another embodiment of the present invention；
Fig. 7 is the diagrammatic cross-section according to the radiation detector assembly of Fig. 6；
Fig. 8 is the stereoscopic schematic diagram of the radiation detector assembly of another embodiment according to the present invention；
Fig. 9 is the diagrammatic cross-section according to the radiation detector assembly of Fig. 8 embodiment；
Figure 10 is the diagrammatic cross-section calculated according to the safety zone of the radiation detector assembly of Fig. 8 embodiment；
Figure 11 is another diagrammatic cross-section calculated according to the safety zone of the radiation detector assembly of Fig. 8 embodiment；
Figure 12 is the diagrammatic cross-section of the radiation detector assembly of another embodiment according to the present invention.
Specific embodiment
Below in conjunction with specific embodiment, the present invention will be further described.It should be understood that following embodiment is merely to illustrate this
The range of invention and is not intended to limit the present invention.
It should be noted that it can directly set when component/part is referred to as on " setting exists " another component/part
It sets on another component/part or there may also be component/parts placed in the middle.When component/part is referred to as " connection/connection
Connect " to another component/part, it, which can be, is directly connected to/is attached to another component/part or may be simultaneously present residence
Middle component/part.Term as used herein " connection/connection " may include electrical and/or mechanical-physical connection/connection.This
Term "comprises/comprising" used in text refers to feature, step or the presence of component/part, but is not precluded one or more
Other feature, step or the presence of component/part or addition.Term as used herein "and/or" includes one or more phases
Close any and all combinations of listed item.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term used herein is intended merely to the purpose of description specific embodiment, and
It is not intended to the limitation present invention.
In addition, in the description of the present invention, term " first ", " second " etc. are used for description purposes only pair similar with distinguishing
As between the two and sequencing being not present, indication or suggestion relative importance can not be interpreted as.In addition, of the invention
In description, unless otherwise indicated, the meaning of " plurality " is two or more.
Fig. 2 is the stereoscopic schematic diagram of radiation detector assembly according to an embodiment of the invention, as shown in Figure 2, this hair
The radiation detector assembly of bright offer has shell 10, and shell 10 has first shell 11 and second shell 12 positioned opposite, the
There is third shell 13, first shell 11, second shell 12 and third shell 13 are together between one shell 11 and second shell 12
Define internal box-like or can-like the shell 10 with accommodating space；It is provided with insulation displacement connector 15 in first shell 11, is clamped
Device 15 is fixed on the top of first shell 11, and cable 20 extends to the interior of shell 10 after passing through insulation displacement connector 15 and first shell 11
Portion, cable 20 are fixed in first shell 11 by insulation displacement connector 15 simultaneously；Through-hole 14 is additionally provided on shell 10, for example, through-hole
14 shapes that can be set in through-hole 14 in first shell 11 perhaps third shell 13 can be round, rectangle or other shapes
Shape.
It will be apparent to a skilled person that through-hole 14 can make when shell 10 is put into radioactive decay pond
It obtains excreta waste liquid to flow into inside shell 10, when shell 10 takes out out of radioactive decay pond, excreta waste liquid can pass through
Through-hole 14 is flowed out out of shell 10.
Further, Fig. 3 is the diagrammatic cross-section of radiation detector assembly according to fig. 2, by Fig. 3 combination Fig. 2 it is found that clamping
A portion of device 15 passes through first shell 11 and is fixed in first shell 11, and a portion of cable 20 passes through clamping
The inside of shell 10 is extended to after device 15 and first shell 11, cable 20 is fixed on first shell 11 by insulation displacement connector 15 simultaneously
On, the end of cable 20 and detector 30 communicate to connect；It clearer can find out that through-hole 14 is close to first shell 11 by Fig. 3
Setting has spacing between through-hole 14 and detector 30, i.e. the position of detector 30 is not overlapped with the plane where through-hole 14, from
And the radiation exposure that excreta waste liquid when preventing from being tested outside shell issues enters the inside of shell 10, influences detector 30 and is surveyed
Measure the accuracy of data.
First shell 11, second shell 12 and third shell 13 should all be made of high density material, such as lead,
Tungsten, iron, brick or concrete etc., thus dry not by shell external radiation to be placed in the creation of detector 30 one inside shell 10
The space for the fixed volume disturbed, this is conducive to accurately determine the radiological data in excreta waste liquid.Meanwhile those skilled in the art
It should be noted that the radiation shield performance in order to guarantee shell, first shell 11, second shell 12 and third shell 13
Thickness should at least reach 5 times of half value thickness that highest energy ray is corresponded in waste liquid, and half value thickness expression can will penetrate
Heat input decays to the thickness of the substance of initial value half, for example, the energy of γ ray that iodine 131 nucleic issues is 364keV, if
Using lead, (half-value layer of the corresponding 364keV ray of lead is about 3.5mm to the material of shell 10, can be obtained by the relevant technologies handbook
Take), then the thickness of shell 10 should at least reach 17.5mm (i.e. 5 × 3.5mm).
Detector 30 can be commonly used in the instrument of high-energy ray counting rate in measurement liquid using this field, for example dodge
Bright crystal counter etc..Preferably, detector 30 should have sealing performance, so that when detector 30 immerses excreta waste liquid
It can still be worked normally when middle, this is that those skilled in the art are easy to accomplish, and details are not described herein.Meter measured by detector 30
Digit rate is the quantity of the event received in the unit time, and the high-energy photon in high-energy ray is incident on the sudden strain of a muscle in detector 30
After bright crystal, high-energy photon is converted to visible light to scintillation crystal and the electrooptical device by coupling with scintillation crystal is into one
It will be seen that light is converted to electric signal, each high-energy photon is converted to visible light and is known as an event step.
The convenience that those skilled in the art should be noted that install and measure as shown in Figure 4 and Figure 5 can be with
Cable 20 is directly protruded into 10 inside of shell by through-hole 14 and is communicated to connect with detector 30, first needs so that cable 20 does not block up
Through-hole 14 is filled in, i.e., so that cable 20 does not influence the inside that excreta waste liquid flows into, flows out shell 10；Second needs so that detector 30
It is placed in the place that the outer ray of shell cannot shine directly into, for example detector 30 is placed at first shell 11 in Fig. 4
Corner, when shell 10 and detector are put into radioactive decay pond, detector 30 only measures the radiation data inside shell 10.
Fig. 6 is according to the stereoscopic schematic diagram of the radiation detector assembly of another embodiment of the present invention, and Fig. 7 is according to Fig. 6's
The diagrammatic cross-section of radiation detector assembly, it is real by the appended drawing reference pair and upper one that increase by 100 in the embodiment of Fig. 6 and Fig. 7
It applies the same or similar component of example to be indicated, only describes difference herein, in conjunction with Fig. 6 and Fig. 7 it is found that on shell 110
Two through-holes 114 can also be set, and two through-holes 114 are all set on third shell 113, and one of through-hole 114 is close to
The setting of one shell 111, another through-hole 114 are arranged close to second shell 112, have a spacing between two through-holes 114, thus
When shell 110 is put into excreta waste liquid or takes out from excreta waste liquid, liquid communication better effect.Detector 130 is set
Be placed in the inside of shell 110 and communicated to connect by cable 115 and outer computer, the position of detector 130 and any one
Plane where through-hole 14 is not overlapped, so that the radiation exposure that excreta waste liquid when preventing from being tested outside shell issues enters shell
110 inside influences the accuracy of data measured by detector 130.Those skilled in the art should be noted that through-hole 114
Position may be arranged as: one of through-hole 114 is set in first shell 111, another through-hole 114 is set to second
On shell 112 or third shell 113, it need to only guarantee two through-holes 114 not in the same plane, this belongs to this field
Technical staff's content according to the present invention is easy to accomplish, and details are not described herein.
Fig. 8 is the stereoscopic schematic diagram of the radiation detector assembly of another embodiment according to the present invention, and Fig. 9 is according to Fig. 8
The diagrammatic cross-section of radiation detector assembly, it is real by the appended drawing reference pair and Fig. 2 that increase by 200 in the embodiment of Fig. 8 and Fig. 9
It applies the same or similar component of example to be indicated, only describes difference herein, in conjunction with Fig. 8 and Fig. 9 it is found that through-hole 214 can
To be set as two rows of, circumferencial direction of each exhausting hole 214 along third shell 213 is equidistantly spaced from, wherein an exhausting hole 214
Close to first shell 211, in addition an exhausting hole 214 is close to second shell 212.Through-hole 214 may be arranged as being greater than two rows, together
When adjacent through-holes 214 between spacing may be set to be difference, through-hole 214 can also be respectively arranged at first shell 211 with
And in second shell 212, this belongs to what those skilled in the art were readily apparent that in conjunction with the technical inspiration of the application, no longer superfluous herein
It states.The position of short transverse of each exhausting hole 214 in third shell 213 is consistent, and the row close to first shell 211 is logical
There is spacing between hole 214 and an other exhausting hole 214 for close second shell 212, detector 230 is set to the Space Interval
Interior, i.e., the position of detector 230 is not overlapped with the plane where any exhausting hole 214, thus when preventing from being tested outside shell
The radiation exposure that issues of excreta waste liquid enter the inside of shell 210, influence the accuracy of data measured by detector 230.
Shell 210 need to immerse in radioactive decay pond when further, as shown in Figure 10, due to measurement, excreta waste liquid
In directions of rays dissipate at random, although shell 210 can stop most of ray outside shell to be incident in shell 210
Portion, but still some ray will transmit through through-hole 214 and be incident on the inside of shell 210, if this part ray is incident on spy
It surveys on device 230, error is occurred into for the detection result for making detector 230 and is needed further to eliminate this error to shell
10 are designed.Due to directions of rays incident outside shell at each through-hole 214 be it is random, for close to first shell 211
For the through-hole 214 at place, when incident ray is with horizontal or deviation first shell 211 direction incidence, ray cannot be direct
It exposes on detector 230, on detector 230 substantially without influence, when incident ray is incident with the direction for being biased to second shell 212
When, ray is possible on direct irradiation to detector 230, will be had an impact to the detection result of detector 230；Similarly, for
For the through-hole 214 at second shell 212, when incident ray is incident with horizontal or deviation second shell 212 direction
When, ray is unable on direct irradiation to detector 230, on detector 230 substantially without influence, when incident ray is to be biased to first shell
When the direction incidence of body 211, ray is possible on direct irradiation to detector 230, will be generated to the detection result of detector 230
It influences.Therefore, it as shown in figure 5, when the spacing H long enough between two exhausting holes 214, is not penetrated generating one by direct incidence
The safety zone that line influences, i.e. polygon ABCDEF area encompassed, detector 230 will only be received from outer in the area
The radiation exposure in excreta waste liquid inside shell 210, the data that detector 230 is detected at this time can accurately reflect shell
Radiation level inside 210.
Therefore, in conjunction with Figure 10 and Figure 11 it is found that spacing H can be determined in the following manner: when shell 210 uses round can
Shape, and when by two 214 symmetric designs of exhausting hole, first shell 211 and second shell 212 are partly denoted as R, cylindrical hole
214 diameter is denoted as h, and the diameter of through-hole 214 is the direction vertical with first shell 211 or 212 place plane of second shell,
The depth of through-hole 214 is denoted as t, the thickness of depth t namely shell 210, and the outer ray of shell has critical intersection point when incident into shell
O is known under a proportional relationship at this time:
H/t=(H/2)/(R-t)
, so as to release H=2h (R-t)/t.In order to make outside shell ray not on direct irradiation to detector 30, need so that
H>2h(R-t)/t.When shell 10 is using other shapes, those skilled in the art can by the technical inspiration of Fig. 8 and Fig. 9 without
The minimum value of the creative corresponding spacing H of release is needed, details are not described herein.
Further, due in radioactive decay pond may include multiple kinds of energy ray, in order to cope with different radiation
Property decay pond in different situations, ray energy distribution situation in radioactive decay pond can be collected in advance in the present invention, from
And calculate the thickness t of corresponding shell, and according to the diameter h of the through-hole of design calculate different-thickness t and diameter h it is corresponding between
Size away from H, so that the shell of multiple and different sizes is made in advance, consequently facilitating selecting difference as needed in actual measurement
The shell of size measures, and improves measurement efficiency.
For those skilled in the art it is to be appreciated that in the embodiment of Fig. 8-Figure 11, through-hole 214 is set as two rows of, real
On border, the number of rows of through-hole 214, which can according to need, to be configured, and is not limited solely to two rows.Meanwhile through-hole 214 is specific
Shape between shape and two neighboring through-hole 214 also can according to need selection.When the number of rows of through-hole 214, shape and
After spacing is selected, those skilled in the art can determine the size of relevant parameter according to the enlightenment of above-described embodiment, herein no longer
It repeats.
Figure 12 is the diagrammatic cross-section of the radiation detector assembly of another embodiment according to the present invention, in the embodiment of Figure 12
In, same or similar component is indicated by increasing by 300 appended drawing reference, is only described compared with Fig. 2 embodiment herein
Difference.Radio transmitter 331 is contained in detector 330, radio transmitter 331 is fixed on outer by fixed link 316
The inside of shell, for example can be fixed in first shell 311；The radio transmitter 331 can be collected by 330 institute of detector
Counting rate data are sent to matched computer and are handled.At this point, insulation displacement connector 315 is no longer pass through first shell 311 accordingly,
But the top of first shell 311 is set in order to connection cables 320, consequently facilitating shell is put into radioactive decay pond
In, cable 320 no longer has data-transformation facility but only uses as folding and unfolding rope at this time.
Radiation detector assembly provided by the invention, which should be noted that work as when in use, to be needed to the radiation in radioactive decay pond
When situation is monitored, it is necessary first to confirm with related personnel and collect, analyze contained radionuclide in radioactive decay pond
Type, for example for the dept. of radiology of hospital, doctor will record the type of radionuclide when carrying out radio nuclide therapy,
The type of the radionuclide in the corresponding radioactive decay pond of dept. of radiology can be easily obtained very much by medical worker.When putting
When the type of penetrating property nucleic determines, the energy as corresponding to each nucleic be it is known, can choose the highest core of energy
Element selects the shell of different size as the thickness with reference to calculating shell as needed.When being monitored, it is necessary first to
Acquisition volume is V1Excreta waste liquid sample, then measure the activity value H of the sample using activity meter1And it is surveyed using detector
Measure the counting rate C of the sample1, so that the specific activity of the excreta waste liquid sample be calculated are as follows: H1/V1, specific activity conversion parameter
Q=H1/(C1V1).After specific activity conversion parameter determines, can be inputted in detector or computer, at the same by shell and
Detector is put into radioactive decay pond by cable, at this time the real-time counting rate in detector real-time measurement radioactive decay pond
It is worth, the real-time specific activity numerical value change situation in radioactive decay pond can be monitored by following formula:
Real-time specific activity=real-time counting rate value × Q.
Radiation monitoring equipment provided by the invention has the advantage that firstly, monitored over time only needs sampling to be once not necessarily to
Artificial sample need to be passed through in each monitoring as traditional sampling method, monitoring whole process can automate record measurement data, keep away
Exempt from the risk that staff is exposed to radiation environment, improves measurement efficiency；Secondly, can arbitrarily be set by fixed cable depth
Sampled point is set, the position of detector can be flexibly installed according to the actual situation, to reach in different depth and position sampled measurements
Purpose；Third, the present invention, which only needs a detector and shell to be put into waste liquid, to be measured, avoid to existing pipeline into
Any transformation of row, may be implemented inexpensive measurement；Finally, the present invention has completely cut off external environment ray to detector by shell
Influence, improve the precision of measurement data to greatest extent.
Above-described, only presently preferred embodiments of the present invention, the range being not intended to limit the invention, of the invention is upper
Stating embodiment can also make a variety of changes.Made by i.e. all claims applied according to the present invention and description
Simply, equivalent changes and modifications fall within claims of the invention.The not detailed description of the present invention is routine
Technology contents.
Claims (15)
1. a kind of radiation detector assembly, which is characterized in that the radiation detector assembly includes:
Detector；And
Shell, the shell is interior to have an accommodating space, and the detector accommodates in the accommodating space, the thickness of the shell
For degree not less than five times of the half value thickness for corresponding to ray, the half value thickness is that the ray energy is decayed to initial value
The thickness of the substance of half is provided with the through-hole extended in the accommodating space from the shell exterior on the shell.
2. radiation detector assembly according to claim 1, which is characterized in that the thickness of the shell is uniform.
3. radiation detector assembly according to claim 1, which is characterized in that the shell has the be arranged in parallel
One shell, second shell and the third shell for connecting the first shell and the second shell, it is the first shell, described
Second shell and the third shell surround the accommodating space.
4. radiation detector assembly according to claim 3, which is characterized in that the first shell, the second shell with
And the third shell is integrally formed.
5. radiation detector assembly according to claim 1, which is characterized in that the shell using lead, tungsten, iron, brick or
Person's concrete for making.
6. radiation detector assembly according to claim 1, which is characterized in that the plane that the extending direction of the through-hole is formed
It is not overlapped with the position where the detector.
7. radiation detector assembly according to claim 1, which is characterized in that be provided with insulation displacement connector, cable on the shell
It is communicated to connect across the insulation displacement connector and with the detector of the interior of shell, the detector is sent out by the cable
Send counting rate data.
8. radiation detector assembly according to claim 1, which is characterized in that the radiation detector assembly further includes cable,
The cable passes through the through-hole and communicates to connect with the detector, and the detector sends counting rate by the cable
Data.
9. radiation detector assembly according to claim 1, which is characterized in that the detector has wireless sending module,
The detector sends counting rate data by the wireless sending module.
10. radiation detector assembly according to claim 1, which is characterized in that the through-hole totally two, two through-holes
Between have spacing.
11. radiation detector assembly according to claim 10, which is characterized in that the extending direction of two through-holes is mutual
In parallel, the plane that the extending direction of the detector and two through-holes is formed does not overlap.
12. radiation detector assembly according to claim 1, which is characterized in that the through-hole is two rows of altogether, wherein each row institute
It states through-hole to be respectively positioned on same plane, the detector is set between the plane where two rows of through-holes.
13. radiation detector assembly according to claim 12, which is characterized in that the size of through-hole described in each row it is identical and
It spaces between uniformly.
14. radiation detector assembly according to claim 13, which is characterized in that the shell is cylindrical, described in two rows
Through-hole is respectively positioned on the side wall of the shell and is arranged symmetrically about the shell, and the through-hole is cylindrical hole.
15. radiation detector assembly according to claim 14, which is characterized in that spacing H > 2h between two rows of through-holes
(R-t)/t, wherein h indicates that the diameter of the through-hole, R indicate that the radius of the shell, t indicate the thickness of the shell.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910721236.7A CN110308473A (en) | 2019-08-06 | 2019-08-06 | A kind of radiation detector assembly |
| PCT/CN2020/099957 WO2021022955A1 (en) | 2019-08-06 | 2020-07-02 | Radiation detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910721236.7A CN110308473A (en) | 2019-08-06 | 2019-08-06 | A kind of radiation detector assembly |
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| WO2021022955A1 (en) * | 2019-08-06 | 2021-02-11 | 苏州瑞派宁科技有限公司 | Radiation detection device |
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| CN115249749B (en) * | 2021-04-25 | 2024-01-16 | 同方威视技术股份有限公司 | Encapsulation structure of tellurium-zinc-cadmium detector |
| CN113625334A (en) * | 2021-08-03 | 2021-11-09 | 成都新核泰科科技有限公司 | Immersion type water body radioactivity real-time online monitoring system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4948970A (en) * | 1989-01-23 | 1990-08-14 | Radiation Safety Services, Inc. | Radon measuring device |
| JP2007024497A (en) * | 2005-07-12 | 2007-02-01 | Fuji Electric Systems Co Ltd | Gamma-ray detection radiation detector |
| CN2904006Y (en) * | 2006-04-05 | 2007-05-23 | 山东省医学科学院放射医学研究所 | Radioactivity aviluating test box for indoor enviornment |
| CN202404239U (en) * | 2011-12-13 | 2012-08-29 | 中国船舶重工集团公司第七一九研究所 | Embedded detection device for specific activity of radioactive liquid |
| CN207396751U (en) * | 2017-08-31 | 2018-05-22 | 成都新核泰科科技有限公司 | A kind of Low background shields vitriol chamber |
| CN109188499B (en) * | 2018-08-30 | 2020-04-21 | 清华大学 | Radioactive source detecting and positioning device |
| CN109581463A (en) * | 2018-12-25 | 2019-04-05 | 中核四0四有限公司 | The measuring device of americium and caesium in a kind of post-processing feed liquid |
| CN210666033U (en) * | 2019-08-06 | 2020-06-02 | 苏州瑞派宁科技有限公司 | Radiation detection device |
| CN110308473A (en) * | 2019-08-06 | 2019-10-08 | 苏州瑞派宁科技有限公司 | A kind of radiation detector assembly |
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| WO2021022955A1 (en) * | 2019-08-06 | 2021-02-11 | 苏州瑞派宁科技有限公司 | Radiation detection device |
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