CN109884095A - A kind of neutron detection device that can precisely detect - Google Patents
A kind of neutron detection device that can precisely detect Download PDFInfo
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- CN109884095A CN109884095A CN201910288763.3A CN201910288763A CN109884095A CN 109884095 A CN109884095 A CN 109884095A CN 201910288763 A CN201910288763 A CN 201910288763A CN 109884095 A CN109884095 A CN 109884095A
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Abstract
The invention discloses the neutron detection devices that one kind can be detected precisely, including neutron emitting source, sample rack, neutron imaging detector, the top of neutron emitting source is arranged in neutron imaging detector, sample rack is arranged between neutron emitting source and neutron imaging detector, it further include rack, neutron emitting source, sample rack, neutron imaging detector are respectively provided on the rack；The first shielded-plate tube is vertically arranged on the exit portal of neutron emitting source, secondary shielding pipe is vertically arranged on the entrance port of neutron imaging detector, first shielded-plate tube and secondary shielding pipe are the setting that can stretch up and down, the secondary shielding pipe is equipped with marking mechanism, the marking mechanism includes driving cylinder and pressure ring, the pressure ring is coaxial with secondary shielding pipe and spaced radial is arranged, driving cylinder is fixedly connected on secondary shielding pipe, driving cylinder can drive pressure ring to move up and down, and pressure ring outer surface coats one layer of sponge immersed with ink；The adjusting that the sample rack can carry out position in front and back and left and right directions is mobile.
Description
Technical field
The present invention relates to neutron detection device technical fields, and in particular to the neutron detection device that one kind can be detected precisely.
Background technique
Neutron detection is that non-damaged data is carried out using the transmission of neutron, the application of this kind of detection mode, is human eye
The detection in the interior of articles region that can not be observed and can not contact brings huge convenience, especially in aviation field, to zero
The inside of component, which carries out detection, to be necessary, if there are cavity or slight cracks inside components, it is easy to cause unexpected thing
Therefore threaten the personal safety of people.
General neutron detection device is unsuitable for the biggish article of area of detection, the biggish article of area, neutron source
Incidence range is difficult to reach, and the interference being subject to when detection also can be relatively more, and the precision of detection is difficult to reach.
Summary of the invention
The object of the present invention is to provide the neutron detection devices that one kind can be detected precisely, especially for large area plate class
The detection of the internal injury of article is particularly suitable, and the processing that can make a mark to the position that there is damage.
A kind of neutron detection device that can precisely detect, including the detection of neutron emitting source, sample rack, neutron imaging
The top of neutron emitting source is arranged in device, neutron imaging detector, and sample rack is arranged in neutron emitting source and neutron imaging
It further include rack between detector, neutron emitting source, sample rack, neutron imaging detector are respectively provided on the rack；
It is vertically arranged the first shielded-plate tube on the exit portal of neutron emitting source, is set vertically on the entrance port of neutron imaging detector
Secondary shielding pipe is set, the first shielded-plate tube and secondary shielding pipe are the setting that can stretch up and down, and the secondary shielding pipe is equipped with
Marking mechanism, the marking mechanism include driving cylinder and pressure ring, between the pressure ring is coaxial with secondary shielding pipe and radial direction
Every setting, cylinder is driven to be fixedly connected on secondary shielding pipe, driving cylinder can drive pressure ring to move up and down, pressure ring appearance bread
Cover one layer of sponge immersed with ink；The adjusting that the sample rack can carry out position in front and back and left and right directions is mobile；
The neutron imaging detector includes that scintillation screen, optical frames be first, reflecting mirror, optical lens two, CCD camera,
The scintillation screen is horizontally set at the upper end opening of secondary shielding pipe, and the optical frames is first to be arranged towards scintillation screen,
Optical lens two with optical frames is first is arranged in a mutually vertical manner, transmitting mirror be arranged between optical lens two and optical frames are first and
Light transmitting is realized between the two, and CCD camera is connect with optical lens two.
The present invention is further arranged to, and the sample rack includes horizontally disposed square frame, square frame
It is inside provided with the first sliding rail in left-right direction, the first sliding rail includes two polished rods, slidably connects fixing seat, machine on the first sliding rail
Frame is equipped with workbench, is equipped with the second sliding rail, the square frame and the second sliding rail along the longitudinal direction on the workbench
It is slidably matched, the rack is equipped with the mobile first driving device of driving square frame, and the square frame is equipped with
The second driving device for driving fixing seat mobile.
The present invention is further arranged to, and first shielded-plate tube and secondary shielding Guan Jun include immovable fixation
Pipe and moveable pipe, the adjustable pipe are threadedly coupled with fixing pipe.
The present invention is further arranged to, the model Andor iKon-LDZ936CCD of the CCD camera.
The present invention is further arranged to, and the first optical frames is large aperture camera lens, and the optical lens two is preferred
It can 180mm micro-lens.
The present invention is further arranged to, and the scintillation screen is the cold neutrons conversion screen of fiber panel structure.
The present invention is further arranged to, and the distance between the optical lens two and reflecting mirror can be adjusted.
The present invention is further arranged to, first shielded-plate tube be up-small and down-big pyramidal structure, described second
Shielded-plate tube is up big and down small pyramidal structure.
Beneficial effects of the present invention:
The neutron detection device that can precisely detect provided herein, as shown in Figure 1, its central inventive point is in neutron
The first shielded-plate tube is arranged in the transmitting terminal in source, and the first shielded-plate tube can play the role of constraining neutron beam, and the upper end of the first shielded-plate tube
It is adjustable to close to sample, the neutron receiving end of neutron imaging detector connects secondary shielding pipe, and the lower end of secondary shielding pipe can
Be adjusted to close to sample, thus can the gradually sample of large area is detected with small area, and shielded-plate tube is to neutron
Effect of contraction can reduce the influence caused by detection such as neutron scattering, reflection, provide detection accuracy, and marking mechanism can be to detection
Label of drawing a circle is carried out to problematic place.
Detailed description of the invention
Fig. 1 is testing principle structural schematic diagram of the invention；
Fig. 2 is structural schematic diagram of the invention；
Fig. 3 is the structural schematic diagram of sample rack of the present invention；
Fig. 4 is the structural schematic diagram of neutron imaging detector of the present invention；
Fig. 5 is the structural schematic diagram of shielded-plate tube of the present invention.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
Below with reference to Fig. 1 to Fig. 5, the present invention will be described.
A kind of neutron detection device that can precisely detect, including the detection of neutron emitting source 1, sample rack, neutron imaging
The top of neutron emitting source 1 is arranged in device 2, neutron imaging detector 2, and sample rack is arranged in neutron emitting source 1 and neutron
It further include rack 3 between imaging detector 2, neutron emitting source 1, sample rack, neutron imaging detector 2 are arranged at machine
On frame 3.
It is vertically arranged the first shielded-plate tube 4 on the exit portal of neutron emitting source 1, is erected on the entrance port of neutron imaging detector 2
Straight setting secondary shielding pipe 5, the first shielded-plate tube 4 and secondary shielding pipe 5 are the setting that can stretch up and down, the secondary shielding pipe
5 are equipped with marking mechanism, and the marking mechanism includes driving cylinder 6 and pressure ring 7, and the pressure ring 7 and secondary shielding pipe 5 are same
Axis and spaced radial setting, driving cylinder 6 are fixedly connected on secondary shielding pipe 5, and driving cylinder 6 can drive to be moved down on pressure ring 7
Dynamic, 7 outer surface of pressure ring coats one layer of sponge immersed with ink.When detecting in sample in the presence of damage, marking mechanism is controlled
Work, pressure ring 7 move down, and print off circles mark in sample surfaces.
The adjusting that the sample rack can carry out position in front and back and left and right directions is mobile.
When detection, sample is fixed on sample rack, and the first shielded-plate tube 4 and secondary shielding pipe 5 are adjusted to close to sample
Upper and lower surface, the first shielded-plate tube 4 and secondary shielding pipe 5 are coaxially disposed, can accurately examine in this way to cell portion domain
It surveys, the first shielded-plate tube 4 and secondary shielding pipe 5 can realize and precisely be detected to zonule, and enter the first shielded-plate tube 4 and the
Neutron in two shielded-plate tubes 5 is the neutron of direct projection, is deflected, the neutron that reflects can be all shielded substantially, and inspection is improved
The precision of survey.
The neutron imaging detector 2 include scintillation screen 8, optical frames first 9, reflecting mirror 10, optical lens 2 11,
CCD camera 12, the scintillation screen 8 are horizontally set at the upper end opening of secondary shielding pipe 5, first 9 court of the optical frames
It is arranged to scintillation screen 8, optical lens 2 11 is arranged in a mutually vertical manner with optical frames first 9, and transmitting mirror is arranged in optical lens 2 11
Light transmitting is realized between optical frames first 9 and therebetween, and CCD camera 12 is connect with optical lens 2 11.
Wherein, the sample rack includes horizontally disposed square frame 13, in square frame 13 in left-right direction
It is provided with the first sliding rail 14, the first sliding rail 14 includes two polished rods, slidably connects fixing seat 15, rack 3 on the first sliding rail 14
It is equipped with workbench 16, is equipped with the second sliding rail 17 on the workbench 16 along the longitudinal direction, the square frame 13 and the
Two sliding rails 17 are slidably matched, the rack 3 be equipped with the mobile first driving device of driving square frame 13 (it is not shown go out,
Can be cylinder), the square frame 13 be equipped with the second mobile driving device of driving fixing seat 15 (it is not shown go out, can
Think cylinder).
Wherein, first shielded-plate tube 4 and secondary shielding pipe 5 include immovable fixing pipe 101 and move
Adjustable pipe 102, the adjustable pipe 102 is threadedly coupled with fixing pipe 101.
Wherein, the model Andor iKon-LDZ936CCD of the CCD camera 12.
Wherein, the optical frames first 9 is large aperture camera lens, and the optical lens 2 11 is Canon 180mm Macro Lens
Head.
Wherein, the scintillation screen 8 is the cold neutrons conversion screen of fiber panel structure.
Wherein, the distance between the optical lens 2 11 and reflecting mirror 10 can be adjusted.
Wherein, first shielded-plate tube 4 is up-small and down-big pyramidal structure, this structure can optimize neutron beam,
Make the neutron beam vertical direction injection for injecting sample, it is maskable fall some deflections neutron beam, the secondary shielding pipe 5 is
Up big and down small pyramidal structure, the lower end of secondary shielding pipe 5 can guarantee that the neutron beam of injection is to inject along the vertical direction substantially, on
End becomes larger, it is ensured that the neutron beam of injection is received by scintillation screen completely.
Beneficial effects of the present invention:
The neutron detection device that can precisely detect provided herein, as shown in Figure 1, its central inventive point is in neutron
The first shielded-plate tube 4 is arranged in the transmitting terminal in source, and the first shielded-plate tube 4 can play the role of constraining neutron beam, and the first shielded-plate tube 4 is upper
End is adjustable to close to sample, and the neutron receiving end of neutron imaging detector 2 connects secondary shielding pipe 5, under secondary shielding pipe 5
End is adjustable to close to sample, thus can the gradually sample of large area is detected with small area, and shielded-plate tube centering
The effect of contraction of son can reduce the influence caused by detection such as neutron scattering, reflection, provide detection accuracy, marking mechanism can be right
Detect that problematic place carries out label of drawing a circle.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, above-mentioned hypothesis these
Improvement and modification also should be regarded as protection scope of the present invention.
Claims (8)
1. the neutron detection device that one kind can be detected precisely, it is characterised in that: including neutron emitting source, sample rack, neutron
Imaging detector, neutron imaging detector are arranged in the top of neutron emitting source, the setting of sample rack in neutron emitting source and
It further include rack between neutron imaging detector, neutron emitting source, sample rack, neutron imaging detector are arranged at machine
On frame；
It is vertically arranged the first shielded-plate tube on the exit portal of neutron emitting source, is vertically arranged on the entrance port of neutron imaging detector
Two shielded-plate tubes, the first shielded-plate tube and secondary shielding pipe are the setting that can stretch up and down, and the secondary shielding pipe is equipped with label
Mechanism, the marking mechanism include driving cylinder and pressure ring, and the pressure ring is coaxial with secondary shielding pipe and spaced radial is set
It sets, driving cylinder is fixedly connected on secondary shielding pipe, and driving cylinder can drive pressure ring to move up and down, pressure ring outer surface cladding one
Sponge of the layer immersed with ink；The adjusting that the sample rack can carry out position in front and back and left and right directions is mobile；
The neutron imaging detector includes that scintillation screen, optical frames be first, reflecting mirror, optical lens two, CCD camera, described
Scintillation screen be horizontally set at the upper end opening of secondary shielding pipe, the optical frames it is first towards scintillation screen be arranged, optics
Camera lens two with optical frames is first is arranged in a mutually vertical manner, transmitting mirror is arranged between optical lens two and optical frames are first and in the two
Between realize light transmitting, CCD camera connect with optical lens two.
2. the neutron detection device that one kind according to claim 1 can be detected precisely, it is characterised in that: the sample is put
Setting frame includes horizontally disposed square frame, is provided with the first sliding rail in square frame in left-right direction, and the first sliding rail includes two
A polished rod, fixing seat is slidably connected on the first sliding rail, and rack is equipped with workbench, sets along the longitudinal direction on the workbench
There is the second sliding rail, the square frame is slidably matched with the second sliding rail, and it is mobile that the rack is equipped with driving square frame
First driving device, the square frame is equipped with the second mobile driving device of driving fixing seat.
3. the neutron detection device that one kind according to claim 1 can be detected precisely, it is characterised in that: first screen
It covers pipe and secondary shielding Guan Jun includes immovable fixing pipe and moveable pipe, the adjustable pipe and fixing pipe spiral shell
Line connection.
4. the neutron detection device that one kind according to claim 1 can be detected precisely, it is characterised in that: the CCD phase
The model Andor iKon-LDZ936 CCD of machine.
5. the neutron detection device that one kind according to claim 1 can be detected precisely, it is characterised in that: the optical frames
First is large aperture camera lens, and the optical lens two is Canon 180mm micro-lens.
6. the neutron detection device that one kind according to claim 1 can be detected precisely, it is characterised in that: the scintillation screen
For the cold neutrons conversion screen of fiber panel structure.
7. the neutron detection device that one kind according to claim 1 can be detected precisely, it is characterised in that: the optical frames
The distance between first two and reflecting mirror can be adjusted.
8. the neutron detection device that one kind according to claim 1 can be detected precisely, it is characterised in that: first screen
Covering pipe is up-small and down-big pyramidal structure, and the secondary shielding pipe is up big and down small pyramidal structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910288763.3A CN109884095A (en) | 2019-04-11 | 2019-04-11 | A kind of neutron detection device that can precisely detect |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910288763.3A CN109884095A (en) | 2019-04-11 | 2019-04-11 | A kind of neutron detection device that can precisely detect |
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| CN109884095A true CN109884095A (en) | 2019-06-14 |
Family
ID=66936908
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| CN201910288763.3A Pending CN109884095A (en) | 2019-04-11 | 2019-04-11 | A kind of neutron detection device that can precisely detect |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095482A (en) * | 2019-06-18 | 2019-08-06 | 丹东华日理学电气有限公司 | A kind of self-positioning fixed tube Real-time Imaging device |
| CN110927187A (en) * | 2019-10-24 | 2020-03-27 | 东莞材料基因高等理工研究院 | Neutron transmission multichannel focusing conduit device and neutron diffraction spectrometer |
| CN112986288A (en) * | 2021-02-09 | 2021-06-18 | 中国原子能科学研究院 | Detection device and detection method for direct neutron radiography nondestructive detection of radioactive sample |
| CN113916918A (en) * | 2021-11-03 | 2022-01-11 | 中国原子能科学研究院 | Detection system for neutron photography of radioactive samples |
| CN118032831A (en) * | 2024-04-11 | 2024-05-14 | 南京航空航天大学 | Powder diffraction analysis method and device based on gas detector |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110095482A (en) * | 2019-06-18 | 2019-08-06 | 丹东华日理学电气有限公司 | A kind of self-positioning fixed tube Real-time Imaging device |
| CN110095482B (en) * | 2019-06-18 | 2024-01-12 | 丹东华日理学电气有限公司 | Real-time imaging detection device for self-positioning fixed tubular object |
| CN110927187A (en) * | 2019-10-24 | 2020-03-27 | 东莞材料基因高等理工研究院 | Neutron transmission multichannel focusing conduit device and neutron diffraction spectrometer |
| CN110927187B (en) * | 2019-10-24 | 2023-10-17 | 东莞材料基因高等理工研究院 | Neutron transmission multichannel focusing catheter device and neutron diffraction spectrometer |
| CN112986288A (en) * | 2021-02-09 | 2021-06-18 | 中国原子能科学研究院 | Detection device and detection method for direct neutron radiography nondestructive detection of radioactive sample |
| CN112986288B (en) * | 2021-02-09 | 2022-07-01 | 中国原子能科学研究院 | Detection device and detection method for direct neutron radiography nondestructive detection of radioactive sample |
| CN113916918A (en) * | 2021-11-03 | 2022-01-11 | 中国原子能科学研究院 | Detection system for neutron photography of radioactive samples |
| CN118032831A (en) * | 2024-04-11 | 2024-05-14 | 南京航空航天大学 | Powder diffraction analysis method and device based on gas detector |
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