CN208672810U - A kind of gate-type radioactivity monitoring and identifying system - Google Patents
A kind of gate-type radioactivity monitoring and identifying system Download PDFInfo
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- CN208672810U CN208672810U CN201821493218.5U CN201821493218U CN208672810U CN 208672810 U CN208672810 U CN 208672810U CN 201821493218 U CN201821493218 U CN 201821493218U CN 208672810 U CN208672810 U CN 208672810U
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Abstract
The utility model discloses a kind of gate-type radioactivity monitoring and identifying system, including portal frame, gamma detector, neutron detector, nuclide identification detector, warning device, power supply and master control borad are provided on the portal frame；The nuclide identification detector is detachably secured to the portal frame；The gamma detector, neutron detector, nuclide identification detector and warning device are electrically connected at master control borad；The power supply is electrically connected at master control borad.The utility model can monitor the radioactive substance for radiating neutron ray and gamma ray simultaneously, and can carry out nuclide identification, and nuclide identification detector can switching uses between fixed detection and hand-held detection according to field demand.
Description
Technical field
The utility model relates to monitor identification technology field, and in particular to a kind of gate-type radioactivity monitoring and identifying system.
Background technique
Radioactive substance can radiate the very strong radioactive ray of penetration power, and improper use will cause radioactive pollution, harm
The health and safety of people prevents nuclear material or other radioactive substances from illegally being shifted, and has to the safety for guaranteeing country and the public
It is significant.Judge whether checked object carries radioactive substance at present, it is main by detecting radioactive substance transmitting
Gamma ray and neutron ray judge.
Gamma detector is usually using plastic scintillant or sodium iodide.Plastic scintillant is cheap, power spectrum is wide, volume can
It is made bigger, so the detectivity to radioactive substance is relatively high, but its detection can not carry out nucleic less than full energy peak
Identification.Sodium iodide energy resolution is higher, can get the power spectrum of the ray while counting to the ray detected, leads to
It crosses compared with the standard spectrum of radioactive element, it may be determined that the type of radioactive substance, but the volume of sodium iodide crystal is done less, institute
It is relatively low with the detectivity to radioactive substance.Current gate-type equipment has usually only used one of detector,
Using in the channel-type or gate-type system of Nal detector, Nal detector is all firmly fixed, can not be according to live need
It asks and switches at random in fixed detection and hand-held detection.
Neutron detector generallys use at present3He or10BF3Gas detector, need relatively large region accommodate gaseous state at
Point, increase many problems and cost to the installation of system, transport, maintenance, especially3He gas is a kind of scarce resource, valence
Lattice are costly, also appreciate in recent years always, and obtain the gas and much limited.There is proposition to use later6LiI(Eu)
Scintillation crystal detects neutron, but the volume of the crystal is done less, and common maximum volume Φ 5cm × 5cm, detectivity compares
It is low.
Therefore, it designs a gate-type radioactivity monitoring to solve the above problems and identifying system is necessary.
Utility model content
In view of the deficiencies of the prior art, the utility model is intended to provide a kind of gate-type radioactivity monitoring and identifying system, can
The radioactive substance of radiation neutron ray and gamma ray is monitored simultaneously, and can carry out nuclide identification, and nuclide identification detector
It can be switched between fixed detection and hand-held detection according to field demand and be used.
To achieve the goals above, the utility model adopts the following technical solution:
A kind of gate-type radioactivity monitoring and identifying system, including portal frame are provided with gamma spy on the portal frame
Survey device, neutron detector, nuclide identification detector, warning device, power supply and master control borad；The nuclide identification detector is detachable
Ground is fixed on the portal frame；The gamma detector, neutron detector, nuclide identification detector and warning device are electrical
It is connected to master control borad；The power supply is electrically connected at master control borad.
Further, the portal frame includes the first column, the second column and crossbeam；It is provided on first column
Gamma detector and neutron detector are provided with gamma detector, neutron detector and nuclide identification on second column and visit
Device is surveyed, the nuclide identification detector is detachably secured on second column.
Further, first column, the second column and crossbeam are hollow structure inside and are interconnected；First
The gamma detector and neutron detector of column are set to the inside of first column, gamma detector, the neutron of the second column
Detector and nuclide identification detector are set to the inside of second column, and the master control borad and power supply are set to the crossbeam
It is internal；First column and the opposite one side of the second column are incidence plate, correspond to nucleic in the incidence plate of second column
The region of recognition detector is retractable.
Still further, being equipped with nuclide identification detector mounting box, the nuclide identification detector in second column
Mounting box has switchable incident panel, and the internal back side is equipped with shockproof cotton-padded covering and fixture, and bottom is equipped with supporting table.
Further, the warning device includes buzzer and alarm lamp bar, and the alarm lamp bar is set to the gate-type frame
The entrance of frame and exit.
Further, the entrance of the portal frame be equipped with infrared sensor and camera, the infrared sensor and
Camera is electrically connected in the master control borad.
Further, the entrance of the portal frame is equipped with to penetrating light valve.
Further, the entrance of the portal frame is equipped with display screen, and the display screen is electrically connected at the master control
Plate.
Further, nuclide identification detector is mainly by nuclide identification crystal detection, nuclide identification photomultiplier tube and hand
Handle composition is held, the nuclide identification photomultiplier tube is located at the top of the nuclide identification crystal detection, the hand-held handle
One end be connected to nuclide identification crystal detection, the other end is connected to nuclide identification photomultiplier tube.
Further, the nuclide identification crystal detection of nuclide identification detector uses sodium iodide crystal, gamma detector
Gamma detection crystal uses plastic scintillant, and the neutron detection crystal of neutron detector uses6LiF/ZnS:Ag。
The utility model has the beneficial effects that:
1, the utility model can be realized while monitor neutron radioactivity substance and gamma radiation substance, and to radioactive material
Matter carries out nuclide identification.
2, on the one hand the utility model solves list in such a way that gamma detector and nuclide identification detector combine
On the other hand the solely problem low using gamma detection sensitivity caused by nuclide identification detector solves and gamma spy is used alone
The problem of can not identifying nucleic caused by device is surveyed, the two, which combines, both improves detectivity, can also identify radioactivity in real time
Nucleic.
3, nuclide identification detector can switch between fixed detection and hand-held detection and use, and safety inspector can be according to scene
Actual conditions arbitrarily switch, and are conducive to safety inspector and quickly determine suspect object, improve safety check efficiency.
4, the utility model can record the same day simultaneously and accumulative checked object quantity, checked object reach information, tested pair
As the details such as photo and the video recording of tested process, it is convenient for backstage monitoring and historical query, improves safety check efficiency.
5, the utility model uses6Neutron detector of the LiF/ZnS:Ag as scintillation crystal, the detector are not only visited
It is very high to survey efficiency, better than same volume3He gas detector, so that system detection efficient is very high, and the comparison that volume can be done
Greatly, so that it is relatively high to the detectivity of neutron radioactive substance, so that the passage speed of checked object can be improved.
Detailed description of the invention
Fig. 1 is the exterior general illustration of the utility model embodiment；
Fig. 2 is the right side perspective schematic diagram (including the first column schematic internal view) of system in the utility model embodiment；
Fig. 3 is the left side perspective schematic diagram (including the second column schematic internal view) of system in the utility model embodiment；
Fig. 4 is the nuclide identification detector schematic diagram in the utility model embodiment；
Fig. 5 is the utility model embodiment Radionuclide recognition detector mounting box schematic diagram；
Fig. 6 is gamma detector schematic diagram in the utility model embodiment；
Fig. 7 is neutron detector schematic diagram in the utility model embodiment；
Fig. 8 is the system principle schematic diagram in the utility model embodiment.
Specific embodiment
Below with reference to attached drawing, the utility model will be further described, it should be noted that following embodiment is with this
Premised on technical solution, the detailed implementation method and specific operation process are given, but the protection scope of the utility model is simultaneously
It is not limited to the present embodiment.
Embodiment 1
Present embodiment discloses a kind of gate-type radioactivity monitoring and identifying systems, as shown in Figure 1-3, include portal frame 1,
Gamma detector 6, neutron detector 7, nuclide identification detector 8, warning device, power supply 14 are provided on the portal frame 1
With master control borad 13；The nuclide identification detector 8 is detachably secured to the portal frame 1；The gamma detector 6, in
Sub- detector 7, nuclide identification detector 8 and warning device are electrically connected at master control borad 13；The power supply 14 is electrically connected at
Master control borad 13.
In above-mentioned gate-type radioactivity monitoring and identifying system, combined using gamma detector and nuclide identification detector
On the one hand mode solves the problems, such as that gamma detection sensitivity is low when nuclide identification detector is used alone, and on the other hand solves
The problem of can not identifying nucleic when exclusive use gamma detector, the two, which combines, both improves detectivity, can also be real
When identify radionuclide.By above-mentioned gate-type radioactivity monitoring and identifying system, may be implemented to monitor neutron radioactivity simultaneously
Substance and gamma radiation substance, and nuclide identification is carried out to radioactive substance.The detachable setting of nuclide identification detector, makes
Obtaining nuclide identification detector can use in switching between fixed detection and hand-held detection, and safety inspector can be according to the actual situation on site
Switching is conducive to safety inspector and quickly determines suspect object, improves safety check efficiency.
In the present embodiment, the portal frame 1 includes the first column 2, the second column 3 and crossbeam 4；First column
Gamma detector 6 and neutron detector 7 are provided on 2, and (there are two 6 Hes of gamma detector on the first column 2 in the present embodiment
One neutron detector 7), gamma detector 6, neutron detector 7 and nuclide identification detector are provided on second column 3
8 (there are two 6, neutron detectors 7 of gamma detector and the detection of nuclide identification on the second column 3 in the present embodiment
Device 8), the nuclide identification detector 8 is detachably secured on second column 3.
Further, in the present embodiment, first column 2, the second column 3 and crossbeam 4 are hollow structure inside
And it is interconnected；The gamma detector 6 and neutron detector 7 of first column 2 are set to the inside of first column 2, and second is vertical
Gamma detector 6, neutron detector 7 and the nuclide identification detector 8 of column 3 are set to the inside of second column 3, the master control
Plate 13 and power supply 14 are set to the inside of the crossbeam 4；First column 2 and the opposite one side of the second column 3 are incidence plate
5, the region that nuclide identification detector is corresponded in the incidence plate 5 of second column 3 is retractable.
Built-in design helps to protect gamma detector, neutron detector, nucleic detector, master control borad and power supply etc. no
It is undermined, gamma detector, neutron detector are all set on the first column and the second column, then can guarantee detection comprehensively,
The case where avoiding missing inspection appearance.
Further, it is equipped with nuclide identification detector mounting box in second column 3, as shown in figure 5, the nucleic
Recognition detector mounting box has switchable incident panel 9, and the internal back side is equipped with shockproof cotton-padded covering 92 and fixture 93, and bottom is set
There is supporting table 91.When fixed nuclide identification detector, first nuclide identification detector 8 is embedded in shockproof cotton-padded covering 92, and by supporting
Platform 91 supports, and is then blocked nuclide identification detector 8 with fixture 93, finally closes switchable incident panel 9.It needs to take
When out, switchable incident panel 9 is opened, fixture 93 is removed, that is, can be taken off the use of nuclide identification detector 8.
The setting of above-mentioned nuclide identification detector mounting box, nuclide identification detector can both have been played it is preferable fixed and
Protective effect, also very convenient repetition is taken out and is put back to.
Further, the warning device includes buzzer 17 and alarm lamp bar 15, and the alarm lamp bar 15 is set to institute
State entrance and the exit of portal frame 1.In the present embodiment, the buzzer 17 is set in the crossbeam 4.In conjunction with alarm
Lamp bar and buzzer, may be implemented sound-light alarm.
In practical applications, two different colors of alarm lamp bar can be set, when gamma detector detects radioactivity
When substance, the alarm lamp bar (such as red) that master control borad controls one of color is lighted, when neutron detector detects radiation
Property substance when, then the alarm lamp bar (such as blue) that master control borad controls another color lights.
Further, in the present embodiment, the entrance of the portal frame 1 is equipped with infrared sensor 12 and camera
11, the infrared sensor 12 and camera 11 are electrically connected in the master control borad 13.Infrared sensor 12 is used for people
Body is detected, and when infrared sensor, which is detected with human body, enters search coverage, master control borad control camera 11 starts to shoot,
It helps to ensure that the content validity of shooting video, save memory space and is checked convenient for the later period.
Further, in the present embodiment, the entrance of the portal frame 1 is equipped with to penetrating light valve 16.To penetrating light valve
Effect, which is to record, passes through number.
Further, the entrance of the portal frame 1 is equipped with display screen 10, and the display screen 10 is electrically connected at described
Master control borad 13.In the present embodiment, the display screen 10 is set to the entrance of the crossbeam 4.The display screen is for showing core
The information such as nucleic title detected by plain recognition detector 8, dosage and neutron warning message, convenient for reminding scrutineer in real time
Member and inspected object.
Further, as shown in figure 3, nuclide identification detector 8 is mounted on the second column 3 in the side in exit
Between position.
Further, as shown in figure 4, nuclide identification detector 8 is mainly by nuclide identification crystal detection 81, nuclide identification light
Electric multiplier tube 82 and hand-held handle 83 form, and the nuclide identification photomultiplier tube 82 is located at the nuclide identification crystal detection 81
Top, one end of the hand-held handle 83 is connected to nuclide identification crystal detection 81, and the other end is connected to nuclide identification photoelectricity
Multiplier tube 82.When the nuclide identification detector 8 of the structure composition is fixed in nuclide identification detector mounting box, entire nucleic
Recognition detector 8 is embedded in shockproof cotton-padded covering 92, and nuclide identification crystal detection 81 is supported by supporting table 91, then uses fixture 93 by nucleic
Identification photomultiplier tube 82 blocks.
Hand-held can be designed so that nuclide identification detector is more convenient when taking out use.
Further, nuclide identification crystal detection 81 uses sodium iodide crystal.
Further, shockproof cotton-padded covering 92 uses sponge, and supporting table 91 and fixture 93 use ferrous material.
Further, as shown in fig. 6, gamma detector 6 is mainly by gamma detection crystal 61 and gamma detection photomultiplier transit
Pipe 62 forms.
Further, in the present embodiment, gamma detection crystal 61 uses plastic scintillant.
Further, in the present embodiment, two gamma detectors 6 on first column 2 and the second column 3 are all
Symmetrically longitudinal arrangement is in first column 2 and the second column 3 close to the side of import.
Further, as shown in fig. 7, neutron detector 7 is mainly by neutron detection crystal 71, neutron detection photomultiplier tube
72 and slow body 73 form, the slow body 73 is wrapped in the outside of the neutron detection crystal 71, and neutron detection crystal 71 is6LiF/ZnS:Ag, shape are rectangle.Using6LiF/ZnS:Ag is as neutron detection crystal, and not only detection efficient is very high, is better than
Same volume3He gas detector, and volume can do it is bigger so that the detection of the sub- radioactive substance of system alignment is sensitive
Spend it is relatively high, so that the passage speed of checked object can be improved.
Further, as shown in fig. 7, slow body 73 uses high-density polyethylene material, with a thickness of 30mm.
Further, in the present embodiment, upper half-space of first column 2 close to outlet side installs a neutron
Detector 7, wherein the neutron detection crystal 71 is located at the lower section of neutron detection photomultiplier tube 72, and neutron detection crystal 71
Medium line of the downward one side close to the first column 2.
Further, in the present embodiment, the lower half-space of second column 3 close to outlet side installs a neutron detection
Device 7, wherein the neutron detection crystal 71 is located at the top of neutron detection photomultiplier tube 72, and neutron detection crystal 71 to
On one side close to the second column 3 medium line.
In the present embodiment, as shown in figure 8, each gamma detector 6 and neutron detector 7 pass through data acquisition board respectively
It is connected to master control borad, the nuclide identification detector 8 is connected to multichannel analyzer, the multichannel analyzer by data acquisition board
Be connected to master control borad, the display screen, to penetrate light valve, infrared sensor, camera, buzzer and alarm lamp be all connected to it is described
Master control borad.
The gate-type radioactivity monitoring of the present embodiment and the working principle of identifying system are:
System electrification booting, gamma detector 6, neutron detector 7 and nuclide identification detector 8 start to acquire data, and
Data are transmitted to master control borad 13 in real time.When the pre-pass portal frame 1 of checked object enters effective detecting area, infrared sensor 12
It is triggered and informs that master control borad 13 has checked object arrival, master control borad 13 will start camera 11 and take pictures and image.When tested pair
As enter portal frame 1 import when, be triggered to light valve 16 is penetrated, inform master control borad 13 record personnel's number.
When checked object carries the radioactive substance of radiation gamma ray, the counting of gamma detector 6 is more than gamma report
Alert threshold value, master control borad 13 can trigger alarm lamp bar 15 (such as red alarm lamp bar) and buzzer 17 is alarmed, and on the display screen 10
Display alarm information；Nuclide identification detector 8 can carry out nuclide identification to radioactive substance simultaneously, and master control borad 13 notifies display screen
The nucleic title and dosage rate that 10 displays monitor.
When checked object carries the radioactive substance of radiation neutron ray, the counting of neutron detector 7 is more than neutron report
Alert threshold value, master control borad can trigger alarm lamp bar 15 (such as blue alarm lamp bar) and buzzer 17 is alarmed, and show on the display screen 10
Show warning message.
When neutron detector 7 and gamma detector 6 are above alarm threshold value, master control borad 13 triggers blue alarm lamp simultaneously
Item, red alarm lamp bar and buzzer 17 are alarmed, while nuclide identification can be carried out to radioactive substance, the notice display of master control borad 13
Nucleic title, dosage rate and the warning message that 10 display of screen monitors.
When locking suspicious checked object range, the retractable area of openable second column, 3 incidence plate 5 of safety inspector, and beat
Switchable incident panel 9 is opened, nuclide identification detector 8 is taken out from nuclide identification detector mounting box, nuclide identification is held and visits
It surveys device 8 and short distance inspection is carried out to each suspicious checked object, when nuclide identification detector 8 is alarmed, so that it may determine and carry
Suspected locations existing for the checked object and radioactive substance of radioactive substance, when use finishes, safety inspector can be by nuclide identification
Detector 8 is put back in the nuclide identification detector mounting box of the second column 3, and switchable incident panel 9 is closed.
When the checked object for carrying radioactive substance leaves detector area, alarm stops.It is generated in system operation
All photos, video, warning message, personnel count etc. can be stored in the memory in master control borad 13, can also pass through
Cable transfers data on remote computer.
Embodiment 2
The gate-type radioactivity monitoring of the present embodiment and identifying system and embodiment 1 are essentially identical, in the present embodiment, described
Divide in gate-type radioactivity monitoring and the high 2000mm of the portal frame of identifying system, inner width 1000mm, the first column and the second column
Not An Zhuan two gamma detectors, gamma detection crystal be plastic scintillant, plastic scintillant size are as follows: 700mm*200mm*
50mm.One neutron detector is installed respectively, neutron detection crystal is in the first column and the second column6LiF/ZnS:Ag flashing
Crystal, crystalline size are as follows: 500mm*200mm*50mm；The built-in nuclide identification detector of second column, crystal detection is iodine
Change sodium, sodium iodide is having a size of diameter 75mm, long 200mm.
Embodiment 3
The gate-type radioactivity monitoring of the present embodiment and identifying system and embodiment 1 are essentially identical, and the main distinction is this reality
It applies in gate-type radioactivity monitoring and the identifying system of example, a gamma detector is installed respectively in the first column and the second column.
Gate-type radioactivity monitoring in the present embodiment and the portal frame of identifying system high 2000mm, inner width 1000mm.Gal
Horse crystal detection is plastic scintillant, plastic scintillant size are as follows: 90mm*200mm*50mm.In first column and the second column
One neutron detector is installed respectively, neutron detection crystal is6LiF/ZnS:Ag scintillation crystal, crystalline size are as follows: 450mm*
250mm*50mm, the second column is interior to install a nuclide identification detector, and crystal detection is sodium iodide, and sodium iodide is having a size of diameter
50mm, long 200mm.
For those skilled in the art, it can be provided various corresponding according to above technical solution and design
Change and modification, and all these change and modification, should be construed as being included in the utility model claims protection scope it
It is interior.
Claims (10)
1. a kind of gate-type radioactivity monitoring and identifying system, which is characterized in that including portal frame, be arranged on the portal frame
There are gamma detector, neutron detector, nuclide identification detector, warning device, power supply and master control borad；The nuclide identification detection
Device is detachably secured to the portal frame；The gamma detector, neutron detector, nuclide identification detector and alarm dress
It sets and is electrically connected at master control borad；The power supply is electrically connected at master control borad.
2. gate-type radioactivity monitoring according to claim 1 and identifying system, which is characterized in that the portal frame includes
First column, the second column and crossbeam；Gamma detector and neutron detector are provided on first column, described second is vertical
Gamma detector, neutron detector and nuclide identification detector are provided on column, the nuclide identification detector is removably solid
Due on second column.
3. gate-type radioactivity monitoring according to claim 2 and identifying system, which is characterized in that first column,
Two columns and crossbeam are hollow structure inside and are interconnected；The gamma detector and neutron detector of first column are set to institute
The inside of the first column is stated, gamma detector, neutron detector and the nuclide identification detector of the second column are set to described second
The inside of column, the master control borad and power supply are set to the inside of the crossbeam；First column and the second column are opposite
It is on one side incidence plate, the region that nuclide identification detector is corresponded in the incidence plate of second column is retractable.
4. gate-type radioactivity monitoring according to claim 3 and identifying system, which is characterized in that set in second column
There is nuclide identification detector mounting box, the nuclide identification detector mounting box has switchable incident panel, internal back
Face is equipped with shockproof cotton-padded covering and fixture, and bottom is equipped with supporting table.
5. gate-type radioactivity monitoring according to claim 1 and identifying system, which is characterized in that the warning device includes
Buzzer and alarm lamp bar, the alarm lamp bar are set to entrance and the exit of the portal frame.
6. gate-type radioactivity monitoring according to claim 1 and identifying system, which is characterized in that the portal frame into
Infrared sensor and camera are equipped at mouthful, the infrared sensor and camera are electrically connected in the master control borad.
7. gate-type radioactivity monitoring according to claim 1 and identifying system, which is characterized in that the portal frame into
Mouthful place is equipped with to penetrating light valve.
8. gate-type radioactivity monitoring according to claim 1 and identifying system, which is characterized in that the portal frame into
Display screen is equipped at mouthful, the display screen is electrically connected at the master control borad.
9. gate-type radioactivity monitoring according to claim 1 and identifying system, which is characterized in that nuclide identification detector master
It to be made of nuclide identification crystal detection, nuclide identification photomultiplier tube and hand-held handle, the nuclide identification photomultiplier tube
Positioned at the top of the nuclide identification crystal detection, one end of the hand-held handle is connected to nuclide identification crystal detection, another
End is connected to nuclide identification photomultiplier tube.
10. gate-type radioactivity monitoring according to claim 1 and identifying system, which is characterized in that nuclide identification detector
Nuclide identification crystal detection use sodium iodide crystal, the gamma detection crystal of gamma detector uses plastic scintillant, neutron
The neutron detection crystal of detector uses6LiF/ZnS:Ag。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821493218.5U CN208672810U (en) | 2018-09-13 | 2018-09-13 | A kind of gate-type radioactivity monitoring and identifying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821493218.5U CN208672810U (en) | 2018-09-13 | 2018-09-13 | A kind of gate-type radioactivity monitoring and identifying system |
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| CN208672810U true CN208672810U (en) | 2019-03-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109061708A (en) * | 2018-09-13 | 2018-12-21 | 公安部第研究所 | A kind of gate-type radioactivity monitoring and identifying system |
| CN112596090A (en) * | 2020-12-09 | 2021-04-02 | 中广核久源（成都）科技有限公司 | Quick-mounting door type radioactive contamination detector device |
-
2018
- 2018-09-13 CN CN201821493218.5U patent/CN208672810U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109061708A (en) * | 2018-09-13 | 2018-12-21 | 公安部第研究所 | A kind of gate-type radioactivity monitoring and identifying system |
| CN112596090A (en) * | 2020-12-09 | 2021-04-02 | 中广核久源（成都）科技有限公司 | Quick-mounting door type radioactive contamination detector device |
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