CN207488506U - A kind of device for being used to verify scintillator detector performance - Google Patents
A kind of device for being used to verify scintillator detector performance Download PDFInfo
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- CN207488506U CN207488506U CN201721343239.4U CN201721343239U CN207488506U CN 207488506 U CN207488506 U CN 207488506U CN 201721343239 U CN201721343239 U CN 201721343239U CN 207488506 U CN207488506 U CN 207488506U
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Abstract
The utility model is related to technical field of nuclear radiation measurement, more particularly to a kind of device for being used to verify scintillator detector performance, including radiation part and extensible member, extensible member includes outer hanging rod and interior loop bar, the shape of outer hanging rod is right angle bending, including horizontal segment and vertical section, horizontal segment is erected on the top surface of scintillator detector, vertical section is located at the lower section of horizontal segment and is bonded with the measured surface of scintillator detector, interior loop bar one end is stretched into vertical section, the interior loop bar other end is connect with radiation part, the natural crystal powder for examining scintillator detector performance is filled in radiation part.Therefore the utility model is maintained at using what hanging calibration equipment can be stablized on scintillator detector, length is changed by the telescopic moving of interior loop bar, radiation part can be made to be moved in each displacement of detector, and by the photon counting shown by detector so as to calculate the detection efficient of detector, the stability and precision of detection are improved.
Description
Technical field
The utility model is related to technical field more particularly to a kind of devices for being used to verify scintillator detector performance.
Background technology
Scintillator detector belongs to the equipment in nuclear physics field at present, the sudden strain of a muscle generated in predetermined substance using ionising radiation
Light is detected and at present one of using most, widest ionizing radiation detector, because of easy to operate, detection area
Greatly, it is quick on the draw and is widely used at the gate sentry of the units such as entry and exit port, customs and steel plant.In recent years due to China
The situation is tense for anti-terrorism, prevents from illegally entering that China is domestic to prevent external terrorist from carrying radioactivity secretly, the dependent part at each port
Scintillator detector is largely configured in each entry and exit port in door (including customs and inspection and quarantine bureau).
Scintillator detector is only having a certain amount of radial objects that can just alarm by rear, essence be by object
The gamma ray that body generates is after scintillator, and the latter can generate photon, and photon generates electricity after the amplification of photomultiplier
Signal, then electric signal reading is shown after the calculating of electronic circuit system.Once reading goes beyond the scope, that is, think to pass through
Object/pedestrian's radioactivity it is exceeded.
Since the volume and weight of detector is larger, equipment must be fixed on ground during installing with screw, cement, because
Equipment after this installation can not move, if needing disassembly process complex.The kind equipment is usually placed at gate sentry, by wind
Day and night the temperature difference and psychrometric difference change greatly for solarization, some areas, and extreme weather conditions are to the circuit board of detector and scintillator
Performance affects greatly, and so as to directly influence the accuracy of detector detection, leads to the generation reported by mistake and failed to report.It is but above-mentioned
Unit only as user, first, the personnel of nuclear physics profession are less, second is that without radioactive source come the accuracy of calibration equipment with
Sensitivity is difficult to determine the situation of equipment in real work.
Furthermore as previously mentioned, scintillator detector one is that volume and weight is larger, just it is fixed on using position once installation,
It is difficult to move, second is that having inconvenient traffic mostly in suburbs using the unit such as quarantine of customs, Check and Examination of Port and steel plant, it is difficult to
Inspection.Therefore the quality for being difficult to determine scintillator detector working condition using unit of current scintillator detector.
Scintillator detector is usually placed in channel both sides, article or the radioactive dosage of pedestrian on sense channel.
Since scintillator detector is positioned at outdoor or gate sentry more, the burning sun lower performance on equipment of being exposed to the sun is influenced.Make simultaneously
Lack the quality of effective means verification detector with side.Therefore the working condition of scintillator must be verified with radioactive source, and
It must be placed in reasonably measuring position, to detect the sensitivity of scintillator detector.Existing calibration equipment is visited with scintillator
The measured surface of survey device, which is separated by 50cm, to be tested, and the test rod base of calibration equipment is smaller, particularly higher in progress
During the test of position, reference test bar draw high distance it is longer, reference test bar rock easily generate error.
Utility model content
(1) technical problems to be solved
The technical problems to be solved in the utility model is to solve the natural radium powder qualification of existing scintillator detector
Device, which is difficult to stablize, keeps test position, and easily leading to the problem of to rock leads to test error.
(2) technical solution
In order to solve the above-mentioned technical problem, the utility model provides a kind of dress for being used to verify scintillator detector performance
It puts, including radiation part and extensible member, the extensible member includes outer hanging rod and interior loop bar, and the shape of the outer hanging rod is bent for right angle
Shape, including horizontal segment and vertical section, the horizontal segment is erected on the top surface of scintillator detector, and the vertical section is located at the water
It the lower section of flat section and being bonded with the measured surface of the scintillator detector, described interior loop bar one end is stretched into the vertical section,
The other end is connect with the radiation part, and the natural crystal for examining the scintillator detector performance is filled in the radiation part
Powder.
Wherein, the natural crystal powder is natural radium mineral dust, and nucleic is Ra-226.
Wherein, the natural crystal powder is three-layer sealed treated Ra-226.
Wherein, the horizontal segment is equipped with guide wheel, and the guide wheel can be rolled in the top surface of the scintillator detector, so that
The outer hanging rod moves horizontally on the scintillator detector.
Wherein, the guide wheel is connect with the horizontal segment by connecting rod, the connecting rod be horizontally disposed with and with the horizontal segment
Vertical connection.
Wherein, the guide wheel is set to the both sides of the horizontal segment, and is arranged in pairs multigroup.
Wherein, the guide wheel is strap brake idler wheel.
Wherein, the vertical section is equipped with clamping screw, and the clamping screw can be contacted with the interior loop bar, solid to lock
The collapsing length of the fixed interior loop bar.
(3) advantageous effect
The above-mentioned technical proposal of the utility model has the following advantages that：The utility model is used to verify scintillator detector
The device of energy is hung on the top of scintillator detection body using the outer hanging rod of right angle bending, and interior loop bar is in the vertical section with outer hanging rod
It can stretch into and stretch out connection, the radiation part for being filled with natural crystal powder is made to fit perfectly and carries out school on the vertical edge-on surface of detector
Test tries, therefore the utility model is maintained at using what hanging calibration equipment can be stablized on scintillator detector, passes through inner sleeve
The telescopic moving of bar changes length, and radiation part can be made to be moved, and by shown by detector in each displacement of detector
Photon counting so as to calculate the detection efficient of detector, the stability and precision of detection are improved, as long as hanging setting
Adjustment radiation part position is placed, it is easy to operate, save certain manual work.
The technical issues of being solved in addition to the utility model described above, form technical solution technical characteristic and
Have except advantage caused by the technical characteristic of these technical solutions, the other technical characteristics of the utility model and these technologies are special
The advantages of sign is brought, will further illustrate with reference to attached drawing.
Description of the drawings
Fig. 1 is the front view that the utility model embodiment is used to verify the device of scintillator detector performance；
Fig. 2 is the left view that the utility model embodiment is used to verify the device of scintillator detector performance.
In figure：1：Radiate part；2：Extensible member；3：Guide wheel；4：Connecting rod；5：Clamping screw；6：Scintillator detector；21：Outside
Hanging rod；22：Interior loop bar.
Specific embodiment
Purpose, technical scheme and advantage to make the utility model embodiment are clearer, new below in conjunction with this practicality
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the part of the embodiment of the utility model, instead of all the embodiments.Based on the reality in the utility model
Apply example, those of ordinary skill in the art's all other embodiments obtained under the premise of creative work is not made, all
Belong to the range of the utility model protection.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally
Connection；Can be mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, can above-mentioned art be understood with concrete condition
Concrete meaning of the language in the utility model.
In addition, in the description of the present invention, unless otherwise indicated, " multiple ", " more ", " multigroup " are meant that two
A or more than two, " several ", " several ", " several groups " are meant that one or more.
As depicted in figs. 1 and 2, the device for being used to verify scintillator detector performance that the utility model embodiment provides,
Including radiation part 1 and extensible member 2, extensible member 2 includes outer hanging rod 21 and interior loop bar 22, and the shape of outer hanging rod 21 is bent for right angle
Shape, including horizontal segment and vertical section, horizontal segment is erected on the top surface of scintillator detector 6, and vertical section is located at the lower section of horizontal segment
And be bonded with the measured surface of scintillator detector 6, interior 22 one end of loop bar is stretched into vertical section, interior 22 other end of loop bar and radiation
Part 1 connects, and the natural crystal powder for examining 6 performance of scintillator detector is filled in radiation part 1.
The device that the utility model is used to verify scintillator detector performance is hung on sudden strain of a muscle using the outer hanging rod of right angle bending
The top of bright body detection body, interior loop bar connect can stretch into and stretch out with the vertical section of outer hanging rod, make to be filled with natural ore powder
The radiation part at end fits perfectly carries out check test, therefore the utility model is filled using hanging verification on the vertical edge-on surface of detector
Being maintained on scintillator detector of can stablizing is put, length is changed by the telescopic moving of interior loop bar, radiation part can be made to exist
Each displacement of detector is moved, and is imitated by the photon counting shown by detector so as to calculate the detection of detector
Rate improves the stability and precision of detection, easy to operate fast as long as adjustment radiation part position is placed in hanging setting
Victory saves certain manual work.
Wherein, natural crystal powder is natural radium mineral dust, and nucleic is Ra-226.Natural radium mineral dust Ra-226 makees
It can ensure that its activity is basicly stable constant in service using life for radioactive source, it is ensured that using the utility model pair
Scintillator detector carries out accuracy during test verification.Six water and nitric acid thoron are used in traditional technology, at present
Through disabling, and the reagent is bulk crystals, and radium powder that can not be powdered with the utility model on precise is comparable.Separately
Outside, the nucleic Th-232 ray energies of six water and nitric acid thoron are about 1/3rd of Ra-226, are higher by than size selective sampling
Dosage rate is smaller, influences the precision of test.
Wherein, natural crystal powder is three-layer sealed treated Ra-226.The Ra-226 of 3 layers of sealed-for-life is on the one hand
It is optimum state when test verification is carried out to scintillator detector that can ensure its activity, on the other hand can prevent from putting
The radiation for penetrating source leaks, and ensures the service life of device.
Further, horizontal segment is equipped with guide wheel 3, and guide wheel 3 can be rolled in the top surface of scintillator detector 6, so that plug-in
Bar 21 moves horizontally on scintillator detector 6.Wherein, guide wheel 3 is connect with horizontal segment by connecting rod 4, connecting rod 4 it is horizontally disposed and
With horizontal segment vertical connection.Because the design of each detector producer is different, the position of detector is located at the different location of babinet；
Set guide wheel that this calibration equipment can be facilitated to be moved in the top surface of detector on the horizontal segment of outer hanging rod.The connection of connecting rod one end is led
Wheel, the other end and horizontal segment vertical connection, make guide wheel be positively retained at horizontal direction and flexibly move, to change radiation part in level side
Upward position needs to take the activity response of multiple points on detector, and the conveniently moving of guide wheel obtains calibration figure, while
The operation of manpower movement is saved, improves the efficiency of verifying work.
Wherein, guide wheel 3 is set to the both sides of horizontal segment, and is arranged in pairs multigroup.Guide wheel is arranged in pairs on horizontal segment both sides,
And setting it is multigroup, ensure guide wheel during exercise have good stationarity.
Wherein, guide wheel 3 is strap brake idler wheel.Guide wheel is strap brake idler wheel in the present embodiment, treats that guide wheel shift position determines
Afterwards, the brake block of strap brake idler wheel can be pressed, can keep stablizing on the position of its determining test point, it will not be due to external force
Offset is generated, improves the accuracy of test.
Specifically, vertical section is equipped with clamping screw 5, clamping screw 5 can be contacted with interior loop bar 22, with the inner sleeve that is locked
The collapsing length of bar 22.It is stretched out in interior loop bar or stretches into vertical section, after radiation part is made to reach precalculated position, screwed in vertical section
Clamping screw makes clamping screw be pressed against interior loop bar, is fixed interior loop bar with this, keeps the position of radiation part in the vertical direction
It is fixed, after being completed, clamping screw is unscrewed, interior loop bar can telescopic moving again.
In conclusion the utility model is used to verify the device of scintillator detector performance using the plug-in of right angle bending
Bar is hung on the top of scintillator detection body, and interior loop bar connect can stretch into and stretch out with the vertical section of outer hanging rod, makes to be filled with day
The radiation part of right mineral dust fits perfectly carries out check test, therefore the utility model is using extension on the vertical edge-on surface of detector
What formula calibration equipment can be stablized is maintained on scintillator detector, changes length by the telescopic moving of interior loop bar, can make
Radiation part moves, and in each displacement of detector by the photon counting shown by detector so as to calculate detector
Detection efficient improves the stability and precision of detection, as long as adjustment radiation part position, operation side are placed in hanging setting
Just it is quick, save certain manual work.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：
It still can modify to the technical solution recorded in foregoing embodiments or which part technical characteristic is carried out etc.
With replacement；And these modifications or replacement, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (8)
1. a kind of device for being used to verify scintillator detector performance, it is characterised in that：It is described to stretch including radiation part and extensible member
Contracting part includes outer hanging rod and interior loop bar, and the shape of the outer hanging rod is right angle bending, including horizontal segment and vertical section, the water
Flat section is erected on the top surface of scintillator detector, and the vertical section is located at the lower section of the horizontal segment and is detected with the scintillator
The measured surface fitting of device, described interior loop bar one end are stretched into the vertical section, and the other end is connect with the radiation part, described to put
The natural crystal powder filled for examining the scintillator detector performance is penetrated in part.
2. the device according to claim 1 for being used to verify scintillator detector performance, it is characterised in that：The natural ore deposit
Stone powder is natural radium mineral dust, and nucleic is Ra-226.
3. the device according to claim 2 for being used to verify scintillator detector performance, it is characterised in that：The natural ore deposit
Stone powder is three-layer sealed treated Ra-226.
4. the device according to claim 1 for being used to verify scintillator detector performance, it is characterised in that：The horizontal segment
Guide wheel is equipped with, the guide wheel can be rolled in the top surface of the scintillator detector, so that the outer hanging rod is in the scintillator
It is moved horizontally on detector.
5. the device according to claim 4 for being used to verify scintillator detector performance, it is characterised in that：The guide wheel with
The horizontal segment is connected by connecting rod, the connecting rod be horizontally disposed with and with the horizontal segment vertical connection.
6. the device according to claim 5 for being used to verify scintillator detector performance, it is characterised in that：The guide wheel is set
The both sides of the horizontal segment are placed in, and are arranged in pairs multigroup.
7. the device for being used to verify scintillator detector performance according to claim 4-6 any one, it is characterised in that：
The guide wheel is strap brake idler wheel.
8. the device according to claim 1 for being used to verify scintillator detector performance, it is characterised in that：The vertical section
Clamping screw is equipped with, the clamping screw can be contacted with the interior loop bar, with the collapsing length for the interior loop bar that is locked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721343239.4U CN207488506U (en) | 2017-10-18 | 2017-10-18 | A kind of device for being used to verify scintillator detector performance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721343239.4U CN207488506U (en) | 2017-10-18 | 2017-10-18 | A kind of device for being used to verify scintillator detector performance |
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| CN207488506U true CN207488506U (en) | 2018-06-12 |
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| CN201721343239.4U Active CN207488506U (en) | 2017-10-18 | 2017-10-18 | A kind of device for being used to verify scintillator detector performance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107643538A (en) * | 2017-10-18 | 2018-01-30 | 中国检验检疫科学研究院 | A kind of device for being used to verify scintillator detector performance |
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2017
- 2017-10-18 CN CN201721343239.4U patent/CN207488506U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107643538A (en) * | 2017-10-18 | 2018-01-30 | 中国检验检疫科学研究院 | A kind of device for being used to verify scintillator detector performance |
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