CN207752159U - Array large area always puts detection device - Google Patents
Array large area always puts detection device Download PDFInfo
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- CN207752159U CN207752159U CN201721253671.4U CN201721253671U CN207752159U CN 207752159 U CN207752159 U CN 207752159U CN 201721253671 U CN201721253671 U CN 201721253671U CN 207752159 U CN207752159 U CN 207752159U
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- optical fiber
- detectors
- signal
- detection device
- wavelength convert
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- 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
- G01T1/20—Measuring radiation intensity with scintillation detectors
Abstract
The utility model proposes a kind of array large area always to put detection device, including：Waterproof protective material；At least a piece of EJ444 detectors are converted to optical signal for detecting α signal betas, and by detection α signal betas；Organic glass, organic glass are connected at least a piece of EJ444 detectors；Wavelength convert optical fiber, wavelength convert optical fiber paving are embedded in organic glass；Photomultiplier, photomultiplier are connected with wavelength convert optical fiber, to transmit to obtain optical signal by wavelength convert optical fiber.The detection device can be by way of two-sided panel detector structure and fiber-optical probe coupling, realize in water body while α beta activities measure and α beta activity nucleic examination, to not only improve photoelectronic detection efficient and collection efficiency, and coincidence measurement may be implemented in the mode that optical fiber both-end is read, and removes electronic noise.
Description
Technical field
The utility model is related to environmental monitoring technology field, more particularly to a kind of array large area always puts detection device.
Background technology
Nuclear radiation can make prevention medium atom be excited with matter interaction, when the atom de excitation that these are excited returns to
Light pulse can be emitted when its ground state, this phenomenon is referred to as to flicker, and is known as dodging to detect the device of nuclear radiation based on this phenomenon
Bright detector.In the detection of traditional α particles and β particles, ZnS (Zinc Sulphur, zinc sulphide) and Plastic scintillation
Sensing element of the body respectively as detection α particles and β particles.Since the direction of propagation of the passage of scintillation light generated in scintillator is random
, so easily collecting and transmission are not allowed, to influence its detection efficient.
In the related art, the measurement of totalαtotalβ radioactive activity, the method being usually taken are：By having for photomultiplier
Effect sensitive detection window is indirectly coupled to directly or by light guide on the surface of scintillator.Although it improves to flicker
The detection efficient of light, but there is also clearly disadvantageous, such as：According to direct-coupling, due to effective spirit of photomultiplier
Quick detection window is limited, to limit detection area；According to INDIRECT COUPLING, since the geometry of detector becomes multiple
It is miscellaneous, to which size can also increase therewith；Simultaneously as photomultiplier cannot be detached with scintillator so that in the survey for having irradiation
In test ring border, live radiation exposure and electromagnetic interference can influence photomultiplier.In addition, based on to immersion type water body
The considerations of measuring cell waterproof of measuring environment, anticorrosion, anti-irradiation, scintillator and the direct or indirect coupling of photomultiplier
Situation is more unable to meet demand.
In addition, the coupling measurement mode based on optical fiber Yu scintillator detection device, is to be applied to β wide area surface dirts mostly
In terms of contaminating monitoring, do not carry out measuring while water body immersion measurement and α β.Moreover, for the lower β cores of content in water
The measurement of element and total α, total β, it is sometimes desirable to quickly measured, it is both at home and abroad at present to adopt when especially there is emergency case more
With traditional radiochemical analysis method, i.e., completed by way of " spot sampling+lab analysis ".However, such methods are insufficient
Place is：Sample pretreatment program is cumbersome, manual operation and time-consuming, and detection knot often can be just provided after sampling a couple of days
Fruit, also, Countries study the on-line monitoring of waterborne radioactivity, but its detection limits relatively high (total α：
0.5Bq/L, total β：1.0Bq/L), to not only cannot be satisfied the demand of low-level radionuclide measurement in water, but also timeliness
Property is not strong, has to be solved.
Utility model content
The utility model is intended to solve at least some of the technical problems in related technologies.
For this purpose, the purpose of this utility model is that proposing that a kind of array large area always puts detection device, the device is not only
Photoelectronic detection efficient and collection efficiency can be improved, and coincidence measurement may be implemented in the mode that optical fiber both-end is read, and goes
Except electronic noise.
In order to achieve the above objectives, the utility model proposes a kind of array large area always to put detection device, including：Waterproof
Protection materials；At least a piece of EJ444 detectors are converted to optical signal for detecting α signal betas, and by the detection α signal betas；Have
Machine glass, the organic glass are connected at least a piece of EJ444 detectors；Wavelength convert optical fiber, the light wavelength conversion
Fibre paving is embedded in the organic glass；Photomultiplier, the photomultiplier is connected with the wavelength convert optical fiber, to pass through
The wavelength convert optical fiber transmits to obtain the optical signal.
Array large area according to the present utility model always puts detection device, can pass through two-sided panel detector structure and light
The mode of fibre-detector coupling is realized to being measured while α beta activities in water body and the examination of α beta activity nucleic, to not
Photoelectronic detection efficient and collection efficiency are only improved, and coincidence measurement may be implemented in the mode that optical fiber both-end is read, removed
Electronic noise.
Further, the waterproof protective material includes：(Polyvinyl chloride gather by aluminum hull, marine glue and PVC
Vinyl chloride) covering.
Further, at least a piece of EJ444 detectors include：EJ212 scintillator detectors, for detecting β particles；
EJ440 detectors, for detecting α particles；Wherein, the organic glass is set to EJ212 scintillator detectors and described
Between EJ440 detectors.
Further, fluting and polishing is arranged in the double layer surface of the organic glass by the way of staggeredly slotting, so that
The wavelength convert optical fiber is coupled in organic glass with optical glue.
Further, the wavelength convert optical fiber is engaged by two panels organic glass and from intermediate read output signal.
Further, array large area always puts detection device and further includes：Optical fiber buncher, for the wavelength convert
The photomultiplier coupling of optical fiber and rear end that optical fiber carries out boundling arrangement and exported the optical fiber buncher by silicone grease
It closes.
Further, array large area always puts detection device and further includes：Processing circuit, the processing circuit and the light
Electric multiplier tube is connected, and to obtain the electric signal that the optical signal is converted to by the photomultiplier, and believes alpha signal and β
It number carries out counting and power spectrum output, and alpha signal and signal beta is distinguished by the pulse amplitude discriminator technology to output signal, with
Carry out nuclide identification.
Further, at least a piece of EJ444 detectors are sheet-like structure, at least a piece of EJ444 detectors
Useful detection area be 0.18m2, the thickness of at least a piece of EJ444 detectors is 1mm.
Further, there is the fibre core of the wavelength convert optical fiber high refractive index, covering to have low-refraction, and section is
1mm×1mm。
Further, the ingredient of at least a piece of EJ444 detectors includes polycrystalline ZnS:Ag.
The additional aspect of the utility model and advantage will be set forth in part in the description, partly will be from following description
In become apparent, or recognized by the practice of the utility model.
Description of the drawings
The utility model is above-mentioned and/or additional aspect and advantage from the following description of the accompanying drawings of embodiments will
Become apparent and is readily appreciated that, wherein：
Fig. 1 is the structural schematic diagram that detection device is always put according to the array large area of the utility model one embodiment；
Fig. 2 is the schematic diagram that the mode of showing is buried according to the two-sided reading optical fiber paving of both-end of the utility model one embodiment；
Fig. 3 is to read the schematic diagram that optical fiber paving buries mode according to the both-end center of the utility model one embodiment；
Fig. 4 is the schematic diagram read according to the single slice detector optical fiber both-end of the utility model one embodiment.
Specific implementation mode
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
The array large area for describing to be proposed according to the utility model embodiment with reference to the accompanying drawings always puts detection device.
Fig. 1 is that the array large area of the utility model one embodiment always puts the structural schematic diagram of detection device.
As shown in Figure 1, the array large area always puts detection device may include：It is waterproof protective material, at least a piece of
EJ444 detectors (as shown in EJ444 detectors 1 in figure), organic glass 2, wavelength convert optical fiber 3 and photomultiplier.
Wherein, at least a piece of EJ444 detectors are converted to optical signal for detecting α signal betas, and by detection α signal betas.Have
Machine glass 2 is connected at least a piece of EJ444 detectors.The paving of wavelength convert optical fiber 3 is embedded in organic glass 2.Photomultiplier with
Wavelength convert optical fiber 3 is connected, to obtain optical signal by the transmission of wavelength convert optical fiber 3.The device of the utility model embodiment can
Not only to improve photoelectronic detection efficient and collection efficiency, but also coincidence measurement may be implemented in the mode that optical fiber both-end is read,
Remove electronic noise.
It is understood that EJ444 detectors 1 can be used for while detect α beta activities, and the particle detected is turned
Change optical signal into.Being coupled to of both organic glass 2 and wavelength convert optical fiber 3 realizes the collection to optical signal, and light is believed
It number is transferred to photomultiplier, photomultiplier realizes conversion of the optical signal to electric signal.
Optionally, in the embodiment of the utility model one, as shown in Figure 1, waterproof protective material includes：Aluminum hull 4 is prevented
Glue 5 and PVC coverings 6, wherein aluminum hull 4 can effectively waterproof and protective device, anti-locking apparatus damage；Marine glue 5 can be effective
Waterproof protects equipment safety；PVC coverings 6 can protect optical fiber, effective waterproof.In addition, waterproof protective material setting side
Formula can there are many kinds of, for example, the outermost layer for always putting detection device in array large area can be arranged in aluminum hull 4；Marine glue 5 can
To be arranged between aluminum hull 4 and EJ444 detectors 1, it is located at below aluminum hull 4；PVC coverings 6 can be arranged in aluminum hull 4 and wavelength
At the boundary position of upconversion fiber 3, for wrapping up wavelength convert optical fiber 3, those skilled in the art can be according to actual conditions
It is configured, is not specifically limited herein.
Further, in the embodiment of the utility model one, as shown in Figure 1, at least a piece of EJ444 detectors packet
It includes：EJ212 scintillator detectors 7 and EJ440 detectors 8.
Wherein, EJ212 scintillator detectors 7 are for detecting β particles.EJ440 detectors 8 are for detecting α particles.Wherein,
Organic glass 2 is set between EJ212 scintillator detectors 7 and EJ440 detectors 8.
Optionally, in the embodiment of the utility model one, the ingredient of at least a piece of EJ444 detectors includes polycrystalline
ZnS:Ag。
Specifically, EJ444 detectors 1 are made of 7 surface of EJ212 scintillator detectors covering EJ440 detectors 8, and
Organic glass 2 is equipped between EJ212 scintillator detectors 7 and EJ440 detectors 8, to effectively improve to photoelectronic collection
Efficiency.Wherein, the main component of the EJ440 detectors 8 in EJ444 detectors 1 is polycrystalline ZnS:Ag.EJ444 detectors 8 can be with
It realizes to being measured while alpha activity and beta activity, ZnS:Ag thin layers can stop the α particles that radioactive substance decay generates,
And the β particles for allowing radioactive substance decay to generate enter in EJ212 scintillator detectors 7, β particles can be flickered in EJ212
It is detected in bulk detector 7.
Further, in one embodiment of the utility model, at least a piece of EJ444 detectors are sheet-like structure,
The useful detection area of at least a piece of EJ444 detectors is 0.18m2, the thickness of at least a piece of EJ444 detectors is 1mm.
That is, EJ444 detectors 1 are sheet-like structures, useful detection area 0.18m2, thickness 1mm, sheet type
Structure can utmostly reduce the radioactive background count of natural gamma.Wherein, EJ444 detectors 1 may also be referred to as bilayer
EJ444 detectors, the utility model embodiment uses bilayer EJ444 panel detector structures, to effectively improve to photoelectronic spy
Survey efficiency.
Further, in one embodiment of the utility model, the double layer surface of organic glass 2 is using staggeredly fluting
Fluting and polishing is arranged in mode, to use optical glue that wavelength convert optical fiber 3 is coupled in organic glass 2.
Specifically, as shown in Fig. 2, the device of the utility model embodiment may be used is opened in 2 double layer surface of organic glass
Wavelength convert optical fiber 3 is coupled to inside organic glass 2 by the mode of slot, polishing using optical glue.In 2 pairs of tables of organic glass
Face is by the way of staggeredly slotting, to effectively improve the toughness of organic glass 2.
Further, in one embodiment of the utility model, wavelength convert optical fiber 3 is engaged by two panels organic glass 2
And from intermediate read output signal.
Optionally, in one embodiment of the utility model, the fibre core of wavelength convert optical fiber 3 has high refractive index, packet
It is 1mm × 1mm that layer, which has low-refraction, section,.
Specifically, as shown in figure 3, being that wavelength convert optical fiber 3 is organic by two panels with Fig. 2 playback mode differences
Glass 2 is engaged and from intermediate read output signal.
Further, in one embodiment of the utility model, the device of the utility model embodiment further includes：Optical fiber
Buncher 9.Wherein, optical fiber buncher 9 is used to carry out boundling arrangement to wavelength convert optical fiber 3, and by silicone grease by optical fiber boundling
The wavelength convert optical fiber 3 that device 9 exports is coupled with the photomultiplier of rear end.
Specifically, as shown in figure 4, the device of the utility model embodiment uses 10 EJ444 detectors 1 altogether, wherein 5
Piece EJ444 detectors 1 are used as a probe unit, the device of the utility model embodiment single to each detection using buncher 9
The wavelength convert optical fiber 3 that member is drawn carries out boundling arrangement, and the wavelength convert for exporting optical fiber buncher 9 by materials such as silicone grease
Optical fiber 3 is coupled with the photomultiplier 10 of rear end.
Further, in one embodiment of the utility model, the device of the utility model embodiment further includes：Processing
Circuit.Wherein, processing circuit is connected with photomultiplier 10, to obtain the telecommunications that optical signal is converted to by photomultiplier 10
Number, and counting and power spectrum output are carried out to alpha signal and signal beta, and pass through the pulse amplitude discriminator technical area to output signal
Divide alpha signal and signal beta, to carry out nuclide identification.
That is, photomultiplier 10 converts optical signals into electric signal output to Subsequent electronic circuit, α letters are carried out
Number and signal beta counting and power spectrum output, and by distinguishing alpha signal and signal beta to the pulse amplitude discriminator technology of output signal,
Carry out nuclide identification.
It detection device is always put to the array large area of the utility model embodiment below obtains operation principle and retouched in detail
It states.
In the utility model embodiment, EJ444 detectors 1 are put into the water body of water tank first, EJ444 detectors 1
α β rays are detected, and the energy of ray radiation is converted into optical signal.Then, the optical signal converted through EJ444 detectors 1 irradiates
Into organic glass 2 and wavelength convert optical fiber 3, optical signal is transferred to subsequent photomultiplier 10 by wavelength convert optical fiber 3
In, photomultiplier 10 converts optical signals into electric signal, and is met according to the output signal of both ends photomultiplier 10
It measures.Finally, electric signal transmission count to subsequent electronic circuit and power spectrum exports, and pass through algorithm and carry out α β letters
Number examination.
The array large area proposed according to the utility model embodiment always puts detection device, can pass through two-sided detector
The mode of structure and optical fiber-detector coupling is realized to being measured while α beta activities in water body and the Zhen of α beta activity nucleic
Not, to not only improve photoelectronic detection efficient and collection efficiency, but also the mode that optical fiber both-end is read may be implemented to meet
It measures, removes electronic noise.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.The meaning of " plurality " is at least two, such as two in the description of the present invention,
It is a, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；Can be
Mechanical connection can also be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary two
The interaction relationship of connection or two elements inside element, unless otherwise restricted clearly.For the common skill of this field
For art personnel, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention unless specifically defined or limited otherwise, fisrt feature is "above" or "below" second feature
Can be that the first and second features are in direct contact or the first and second features pass through intermediary mediate contact.Moreover, first is special
Sign second feature " on ", " top " and " above " can be fisrt feature and be directly above or diagonally above the second feature, or only
Indicate that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with
It is that fisrt feature is directly under or diagonally below the second feature, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field
Technical staff can by the feature of different embodiments or examples described in this specification and different embodiments or examples into
Row combines and combination.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments.
Claims (9)
1. a kind of array large area always puts detection device, which is characterized in that including：
Waterproof protective material；
At least a piece of EJ444 detectors are converted to optical signal for detecting α signal betas, and by the detection α signal betas；
Organic glass, the organic glass are connected at least a piece of EJ444 detectors；
Wavelength convert optical fiber, the wavelength convert optical fiber paving are embedded in the organic glass；
Photomultiplier, the photomultiplier are connected with the wavelength convert optical fiber, to be passed by the wavelength convert optical fiber
It is defeated to obtain the optical signal.
2. always putting detection device according to the array large area described in claim 1, which is characterized in that the waterproofing protection material
Material includes：Aluminum hull, marine glue and PVC coverings.
3. array large area according to claim 1 always puts detection device, which is characterized in that described at least a piece of
EJ444 detectors include：
EJ212 scintillator detectors, for detecting β particles；
EJ440 detectors, for detecting α particles；
Wherein, the organic glass is set between the EJ212 scintillator detectors and the EJ440 detectors.
4. array large area according to claim 3 always puts detection device, which is characterized in that pair of the organic glass
Fluting and polishing is arranged in layer surface by the way of staggeredly slotting, to use optical glue to be coupled to the wavelength convert optical fiber
In organic glass.
5. array large area according to claim 3 or 4 always puts detection device, which is characterized in that the wavelength convert
Optical fiber is engaged by two panels organic glass and from intermediate read output signal.
6. array large area according to claim 1 always puts detection device, which is characterized in that further include：
Optical fiber buncher is used for wavelength convert optical fiber progress boundling arrangement and by silicone grease that the optical fiber buncher is defeated
The optical fiber gone out is coupled with the photomultiplier of rear end.
7. array large area according to claim 1 always puts detection device, which is characterized in that further include：
Processing circuit, the processing circuit are connected with the photomultiplier, are believed the light with obtaining the photomultiplier
Number electric signal being converted to, and alpha signal and signal beta count and power spectrum exports, and pass through the arteries and veins to output signal
It rushes amplitude discriminator technology and distinguishes alpha signal and signal beta, to carry out nuclide identification.
8. array large area according to claim 1 always puts detection device, which is characterized in that described at least a piece of
EJ444 detectors are sheet-like structure, and the useful detection area of at least a piece of EJ444 detectors is 0.18m2, it is described extremely
The thickness of few a piece of EJ444 detectors is 1mm.
9. array large area according to claim 1 always puts detection device, which is characterized in that the wavelength convert optical fiber
Fibre core have high refractive index, covering have low-refraction, section be 1mm × 1mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721253671.4U CN207752159U (en) | 2017-09-27 | 2017-09-27 | Array large area always puts detection device |
| PCT/CN2018/094326 WO2019062253A1 (en) | 2017-09-27 | 2018-07-03 | Array-type large-area total radioactivity detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721253671.4U CN207752159U (en) | 2017-09-27 | 2017-09-27 | Array large area always puts detection device |
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| Publication Number | Publication Date |
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| CN207752159U true CN207752159U (en) | 2018-08-21 |
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ID=63146277
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721253671.4U Active CN207752159U (en) | 2017-09-27 | 2017-09-27 | Array large area always puts detection device |
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| CN (1) | CN207752159U (en) |
| WO (1) | WO2019062253A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884405A (en) * | 2019-03-21 | 2019-06-14 | 重庆市计量质量检测研究院 | VR glasses comprehensive measuring method |
| CN113302521A (en) * | 2012-02-14 | 2021-08-24 | 美国科学及工程股份有限公司 | Spectral discrimination using wavelength-shifting fiber-coupled scintillation detectors |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7141799B1 (en) * | 2005-03-30 | 2006-11-28 | Ut-Battelle, Llc | Fiber optic thermal/fast neutron and gamma ray scintillation detector |
| CN202102118U (en) * | 2011-06-09 | 2012-01-04 | 中国原子能科学研究院 | Large-area portable Beta surface contamination monitor |
| CN103698797A (en) * | 2013-12-30 | 2014-04-02 | 中国原子能科学研究院 | Beta surface polluted-position resolution detector |
| CN104035123B (en) * | 2014-06-27 | 2017-02-15 | 中国电子科技集团公司第八研究所 | Beta surface contamination detection device and method based on scintillant and optical fiber coupling |
| CN107045138B (en) * | 2017-06-20 | 2024-03-22 | 同方威视技术股份有限公司 | Back scattering detection module |
-
2017
- 2017-09-27 CN CN201721253671.4U patent/CN207752159U/en active Active
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2018
- 2018-07-03 WO PCT/CN2018/094326 patent/WO2019062253A1/en active Application Filing
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113302521A (en) * | 2012-02-14 | 2021-08-24 | 美国科学及工程股份有限公司 | Spectral discrimination using wavelength-shifting fiber-coupled scintillation detectors |
| CN109884405A (en) * | 2019-03-21 | 2019-06-14 | 重庆市计量质量检测研究院 | VR glasses comprehensive measuring method |
| CN109884405B (en) * | 2019-03-21 | 2021-01-22 | 重庆市计量质量检测研究院 | VR glasses comprehensive measurement method |
Also Published As
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| WO2019062253A1 (en) | 2019-04-04 |
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