CN109884094A - A kind of neutron non-destructive testing device - Google Patents

A kind of neutron non-destructive testing device Download PDF

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Publication number
CN109884094A
CN109884094A CN201910282512.4A CN201910282512A CN109884094A CN 109884094 A CN109884094 A CN 109884094A CN 201910282512 A CN201910282512 A CN 201910282512A CN 109884094 A CN109884094 A CN 109884094A
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CN
China
Prior art keywords
screening cover
neutron
pedestal
destructive testing
testing device
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CN201910282512.4A
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Chinese (zh)
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CN109884094B (en
Inventor
钱铁威
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Guangdong Taiwei Accelerator Co ltd
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Beijing Zhongbaiyuan International Science And Technology Innovation Research Co Ltd
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Publication of CN109884094A publication Critical patent/CN109884094A/en
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Publication of CN109884094B publication Critical patent/CN109884094B/en
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Abstract

The invention discloses a kind of neutron non-destructive testing devices, including neutron emitting source, pedestal, screening cover, neutron imaging detector, pedestal upper side is sample deposition, the cavity of installation neutron emitting source is equipped among pedestal, the cavity is arranged through the upside of pedestal, the screening cover is located on the upside of pedestal, and screening cover can carry out the adjusting of position in above-below direction, and the upside of screening cover is arranged in the neutron imaging detector;The screening cover is up-small and down-big conical tube structure, it further include shielded-plate tube, the shielded-plate tube is vertically arranged in screening cover, it is connected at the upper end of shielded-plate tube and the upper end opening of screening cover, shielded-plate tube is the setting that can stretch up and down, and the inner sidewall of the screening cover is equipped with Reflective regulation plate, the lower end of Reflective regulation plate and screening cover are articulated and connected, screening cover is equipped with threaded hole, is connected with adjusting screw rod on the threaded hole, the adjusting screw rod is connect with the upper end of Reflective regulation plate.

Description

A kind of neutron non-destructive testing device
Technical field
The present invention relates to neutron detection device technical fields, and in particular to a kind of neutron non-destructive testing device.
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.Generally when detecting, neutron is transmitted from sample to be tested, then directive imaging system, But the transmission direction of neutron is not only directive imaging system, can also be encountered to transmittance to the neutron of transmittance Reflection can be generated again after object, which is applied to the precision that imaging system influences whether detection.
Summary of the invention
The object of the present invention is to provide a kind of neutron non-destructive testing devices that detection accuracy is high.
A kind of neutron non-destructive testing device, including neutron emitting source, pedestal, screening cover, neutron imaging detector, on pedestal Side is sample deposition, and the cavity of installation neutron emitting source is equipped among pedestal, and the cavity is set on the upside of pedestal It sets, the screening cover is located on the upside of pedestal, and screening cover can carry out the adjusting of position in above-below direction, and the neutron imaging is visited Survey the upside that screening cover is arranged in device;
The screening cover is up-small and down-big conical tube structure, further includes shielded-plate tube, the shielded-plate tube is set vertically It sets in screening cover, is connected at the upper end of shielded-plate tube and the upper end opening of screening cover, shielded-plate tube is the setting that can stretch up and down, described The inner sidewall of screening cover be equipped with Reflective regulation plate, the lower end of Reflective regulation plate and screening cover are articulated and connected, set on screening cover There is threaded hole, adjusting screw rod is connected on the threaded hole, the adjusting screw rod is connect with the upper end of Reflective regulation plate;
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 screening cover, and the optical frames is first to be arranged towards scintillation screen, 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.
The present invention is further arranged to, and the pedestal is equipped with guide rod, and the screening cover is equipped with and guiding The pilot hole of bar cooperation, the pedestal are equipped with the driving device one that driving screening cover moves on the guide bar.
The present invention is further arranged to, and the shielded-plate tube includes the fixing pipe and adjustable pipe of coaxial arrangement, described Fixing pipe is fixedly connected with screening cover, and the adjustable pipe is 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, the cross section that the screening cover is be it is rectangular, on four inner sidewalls respectively Equipped with Reflective regulation plate.
The present invention is further arranged to, and the bottom that the lower end of the Reflective regulation plate is higher than screening cover is arranged, reflection The upper end of adjustable plate is arranged lower than the lower end of fixing pipe.
The present invention is further arranged to, and the upper side of the pedestal is equipped with sample rack.
The present invention is further arranged to, and the distance between the optical lens two and reflecting mirror can be adjusted.
Beneficial effects of the present invention:
Neutron non-destructive testing device provided herein can carry out the neutron that foreign object emits shielding isolation and fall, keep away The neutron directive scintillation screen for exempting from reflection, causes detection error, makes scintillation screen that can only receive the neutron transmitted from sample, from And improve the precision of detection.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention;
Fig. 2 is the structural schematic diagram of screening cover 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. 2, the present invention will be described.
A kind of neutron non-destructive testing device, including neutron emitting source 1, pedestal 2, screening cover 3, neutron imaging detector, bottom 2 upper sides of seat are sample deposition, and the cavity 4 of installation neutron emitting source 1 is equipped among pedestal 2, and the cavity 4 runs through pedestal 2 upside setting enables the given-ioff neutron beam upwards of emission source 1, and the screening cover 3 is located on the upside of pedestal 2, and screening cover 3 can be Up and down direction carries out the adjusting of position, and screening cover 3 can move up opening and move down closing, and screening cover 3 is by energy absorbing screen The material for covering neutron is made, and the upside of screening cover 3 is arranged in the neutron imaging detector.
The screening cover 3 is up-small and down-big conical tube structure, and pyramidal structure setting may make directive screening cover The reflection direction of neutron is obliquely, to avoid reflected neutron directive imaging detector.
It further include shielded-plate tube 5, the shielded-plate tube 5 is vertically arranged in screening cover 3, the upper end of shielded-plate tube 5 and screening cover 3 Upper end opening at connect, shielded-plate tube 5 is can stretch up and down setting, and the shielded-plate tube 5 includes the fixing pipe 51 that is coaxially disposed With adjustable pipe 52, the fixing pipe 51 is fixedly connected with screening cover 3, and the adjustable pipe 52 is threadedly coupled with fixing pipe 51. By using above-mentioned technical proposal, shielded-plate tube 5 can further stop the neutron of directive imaging detector, in use, adjustable pipe 52 can be regulated down to the upper side as close as sample to be tested, can reach better blocking effect in this way.
The inner sidewall of the screening cover 3 is equipped with Reflective regulation plate 6, and the lower end of Reflective regulation plate 6 and screening cover 3 are hinged Connection, screening cover 3 are equipped with threaded hole, and adjusting screw rod 7, the adjusting screw rod 7 and reflection are connected on the threaded hole The upper end of adjustable plate 6 connects.In above-mentioned technical proposal, the inclination angle of Reflective regulation plate 6 is adjusted by turn adjusting screw rod 7 Degree is that the neutron of reflection is reflected down as far as possible, is arranged to adjust the reflection angle of the neutron of directive Reflective regulation plate 6 The purpose of Reflective regulation plate 6, to avoid the neutron of directive screening cover in some cases because the tilt angle of screening cover is inadequate, and Neutron is caused to reflect upwards, directive imaging detector, so setting Reflective regulation plate 6 further adjusts tilt angle.
In above-mentioned technical proposal, the neutron of imaging detector reflection is turned by shielding to reach the mesh for improving detection accuracy 's.
The neutron imaging detector includes that scintillation screen 8, optical frames be 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 screening cover 3, and the optical frames first 9 is towards scintillation screen 8 settings, optical lens 2 11 are arranged in a mutually vertical manner with optical frames first 9, and transmitting mirror is arranged in optical lens 2 11 and optical frames Light transmitting is realized between first 9 and therebetween, and CCD camera 12 is connect with optical lens 2 11.The CCD camera 12 Model Andor iKon-LDZ936CCD.The optical frames first 9 is large aperture camera lens, and the optical lens 2 11 is preferred It can 180mm micro-lens.The scintillation screen 8 is the cold neutrons conversion screen of fiber panel structure.The optical lens 2 11 The distance between reflecting mirror 10 can be adjusted.
Wherein, the pedestal 2 is equipped with guide rod 13, and the screening cover 3 is equipped with and leads with what guide rod 13 cooperated To hole 14, the pedestal 2 is equipped with the driving device 1 that driving screening cover 3 moves on guide rod 13.
Wherein, the cross section that the screening cover 3 is be it is rectangular, be respectively equipped with Reflective regulation plate 6 on four inner sidewalls.
Wherein, the bottom that the lower end of the Reflective regulation plate 6 is higher than screening cover 3 is arranged, and the upper end of Reflective regulation plate 6 is low It is arranged in the lower end of fixing pipe 51.
Wherein, the upper side of the pedestal 2 is equipped with sample rack 21.
Beneficial effects of the present invention:
Neutron non-destructive testing device provided herein can carry out the neutron that foreign object emits shielding isolation and fall, keep away The neutron directive scintillation screen 8 for exempting from transmitting, causes detection error, makes scintillation screen 8 that can only receive the neutron transmitted from sample, To improve the precision of detection.
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 (10)

1. a kind of neutron non-destructive testing device, it is characterised in that: including neutron emitting source, pedestal, screening cover, neutron imaging detection Device, pedestal upper side are sample deposition, the cavity of installation neutron emitting source are equipped among pedestal, the cavity runs through pedestal Upside setting, the screening cover is located on the upside of pedestal, and screening cover can carry out the adjusting of position in above-below direction, it is described in The upside of screening cover is arranged in sub- imaging detector;
The screening cover is up-small and down-big conical tube structure, further includes shielded-plate tube, the shielded-plate tube is vertically arranged in It in screening cover, is connected at the upper end of shielded-plate tube and the upper end opening of screening cover, shielded-plate tube is the setting that can stretch up and down, the screen The inner sidewall for covering lid is equipped with Reflective regulation plate, and the lower end of Reflective regulation plate and screening cover are articulated and connected, and screening cover is equipped with spiral shell Pit is connected with adjusting screw rod on the threaded hole, and the adjusting screw rod is connect with the upper end of Reflective regulation plate;
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 screening cover, the optical frames it is first towards scintillation screen be arranged, optical 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 therebetween Realize light transmitting, CCD camera is connect with optical lens two.
2. a kind of neutron non-destructive testing device according to claim 1, it is characterised in that: the pedestal is equipped with guiding Bar, the screening cover are equipped with the pilot hole cooperated with guide rod, and the pedestal is equipped with driving screening cover in guide rod The driving device one of upper movement.
3. a kind of neutron non-destructive testing device according to claim 1, it is characterised in that: the shielded-plate tube includes coaxial The fixing pipe and adjustable pipe of setting, the fixing pipe are fixedly connected with screening cover, and the adjustable pipe and fixed pipe screw thread connect It connects.
4. a kind of neutron non-destructive testing device according to claim 1, it is characterised in that: the model of the CCD camera For Andor iKon-LDZ936CCD.
5. a kind of neutron non-destructive testing device according to claim 1, it is characterised in that: the first optical frames is big Aperture camera lens, the optical lens two are Canon 180mm micro-lens.
6. a kind of neutron non-destructive testing device according to claim 1, it is characterised in that: the scintillation screen is fibrous face The cold neutrons conversion screen of hardened structure.
7. a kind of neutron non-destructive testing device according to claim 3, it is characterised in that: the screening cover is transversal Face be it is rectangular, be respectively equipped with Reflective regulation plate on four inner sidewalls.
8. a kind of neutron non-destructive testing device according to claim 7, it is characterised in that: under the Reflective regulation plate The bottom that end is higher than screening cover is arranged, and the upper end of Reflective regulation plate is arranged lower than the lower end of fixing pipe.
9. a kind of neutron non-destructive testing device according to claim 1, it is characterised in that: on the upper side of the pedestal Equipped with sample rack.
10. a kind of neutron non-destructive testing device according to claim 1, it is characterised in that: the optical lens two with The distance between reflecting mirror can be adjusted.
CN201910282512.4A 2019-04-09 2019-04-09 Neutron nondestructive testing device Active CN109884094B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115128788A (en) * 2022-05-30 2022-09-30 中国人民解放军国防科技大学 Horizontally arranged microscope parallel to observation object

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WO2003104799A2 (en) * 2002-06-11 2003-12-18 Deutsches Krebsforschungzentrum Stiftung Des Öffentlichen Rechts Imaging method and device for carrying out said method
US20080210880A1 (en) * 2005-03-10 2008-09-04 Commissariat A L'energie Atomique Two-Dimensional Detection System for Neutron Radiation in the Field of Neutron Scattering Spectrometry
US7566873B1 (en) * 2006-11-17 2009-07-28 Kla-Tencor Technologies Corporation High-resolution, low-distortion and high-efficiency optical coupling in detection system of electron beam apparatus
WO2010008307A2 (en) * 2008-07-14 2010-01-21 Politechnika Wroclawska Electron detection unit and a scanning electron microscope
CN202102119U (en) * 2011-06-28 2012-01-04 中国原子能科学研究院 Neutron streaming position survey meter
CN107533147A (en) * 2015-05-14 2018-01-02 科磊股份有限公司 For reducing in checking system by the system and method for radiation-induced spurious counts
RU2683238C1 (en) * 2018-05-28 2019-03-27 Федеральное казенное учреждение "войсковая часть 33949" (ФКУ "В/Ч 33949" Shielding device for means of display and information processing
CN209727809U (en) * 2019-04-09 2019-12-03 北京中百源国际科技创新研究有限公司 A kind of neutron non-destructive testing device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003104799A2 (en) * 2002-06-11 2003-12-18 Deutsches Krebsforschungzentrum Stiftung Des Öffentlichen Rechts Imaging method and device for carrying out said method
US20080210880A1 (en) * 2005-03-10 2008-09-04 Commissariat A L'energie Atomique Two-Dimensional Detection System for Neutron Radiation in the Field of Neutron Scattering Spectrometry
US7566873B1 (en) * 2006-11-17 2009-07-28 Kla-Tencor Technologies Corporation High-resolution, low-distortion and high-efficiency optical coupling in detection system of electron beam apparatus
WO2010008307A2 (en) * 2008-07-14 2010-01-21 Politechnika Wroclawska Electron detection unit and a scanning electron microscope
CN202102119U (en) * 2011-06-28 2012-01-04 中国原子能科学研究院 Neutron streaming position survey meter
CN107533147A (en) * 2015-05-14 2018-01-02 科磊股份有限公司 For reducing in checking system by the system and method for radiation-induced spurious counts
RU2683238C1 (en) * 2018-05-28 2019-03-27 Федеральное казенное учреждение "войсковая часть 33949" (ФКУ "В/Ч 33949" Shielding device for means of display and information processing
CN209727809U (en) * 2019-04-09 2019-12-03 北京中百源国际科技创新研究有限公司 A kind of neutron non-destructive testing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115128788A (en) * 2022-05-30 2022-09-30 中国人民解放军国防科技大学 Horizontally arranged microscope parallel to observation object
CN115128788B (en) * 2022-05-30 2023-11-28 中国人民解放军国防科技大学 Horizontally placed microscopic device parallel to observed object

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