CN204302501U - A kind of neutron dose monitoring instrument - Google Patents
A kind of neutron dose monitoring instrument Download PDFInfo
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- CN204302501U CN204302501U CN201420701982.2U CN201420701982U CN204302501U CN 204302501 U CN204302501 U CN 204302501U CN 201420701982 U CN201420701982 U CN 201420701982U CN 204302501 U CN204302501 U CN 204302501U
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- Prior art keywords
- shielding storehouse
- storehouse
- described shielding
- base
- shielding
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 17
- 239000000956 alloy Substances 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 238000002048 anodisation reaction Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000000523 sample Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 230000003026 anti-oxygenic effect Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000003947 neutron activation analysis Methods 0.000 description 1
- 239000003758 nuclear fuel Substances 0.000 description 1
- 239000011824 nuclear material Substances 0.000 description 1
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- 238000012827 research and development Methods 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
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- 238000000904 thermoluminescence Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The utility model discloses a kind of neutron dose monitoring instrument.The utility model comprises slow body (1), shielding storehouse and base (2); Described shielding storehouse comprises shielding Cang Gai (3), shielding storehouse main part (4), shielding storehouse bottom (5); Wherein, bottom and the described slow body (1) of described shielding storehouse bottom (5) are tightly connected, described shielding storehouse bottom (5) opening and main part (4) openend, described shielding storehouse are tightly connected, and main part (4) another openend, described shielding storehouse and the described Cang Gai (3) that shields are tightly connected; Described base (2) is provided with the groove that can hold described shielding storehouse, and described shielding storehouse is removably connected by this groove and described base (2); The bottom of described shielding storehouse bottom (5) is provided with a wire through-hole, and wire connects the detector in described slow body (1) and the circuit in described shielding storehouse by this wire through-hole.This detector advantages of good shielding performance, be convenient to installation and debugging, and isotropic is good.
Description
Technical field
The utility model relates to instrument and equipment field, specifically, relates to a kind of novel gas neutron dose monitoring instrument.
Background technology
Since China's successful detonation first nuclear weapon, nuclear technology all achieves great development in the application of national economy and Defence business.Nuclear power station operation, nuclear fuel production, nuclear material transport, the process disposal of nuclear waste, the research and development etc. of neutron related science technology all be unable to do without and measure neutron supervision.The civilian non-nuclear power neutron application technology development of current China is very rapid.Neutron well logging, neutron bring out that well logging, neutron photography, neutron are for cancer, neutron activation analysis etc. is used widely.The more important thing is, before the year two thousand twenty, China's Nuclear Electricity will have fast development, plan 31, newly-built million kilowatt nuclear power station.Therefore neutron detection technology will have larger Requirement and development.
The detection of neutron must realize by detecting itself and the atomic nucleus secondary charged particle produced that occurs to interact.The measurement of neutron comprises takeoff, i.e. fluence measurement, dose equivalent are measured, and spectral measurement.The detector measured for neutron dose is divided into two classes usually: active probe and passive probe.Active probe can be divided into again ranging pulse to count and measure ionization current two kinds.Ionisation chamber, proportional counter, semiconductor scintillator detector etc. all belong to active probe; Passive probe comprises nuclear emulsion, nuclear track, thermoluminescence, bubble chamber etc.
In the prior art, be the gas neutron detector adopting proportional counter tube for monitoring the neutron detector of neutron irradiation main flow, its advantage is easy, reliable detection efficiency is high, can be used for slow neutron, fast neutron is measured.Traditional neutron detector is A-B rem structure mostly, and detector shielding storehouse part is mostly adopt organic gel to carry out sealing to fix, and there is the problems such as poor sealing, shield effectiveness is poor, installation and maintenance are very difficult.
Utility model content
For the technical problem existed in prior art, the purpose of this utility model is to provide a kind of neutron dose monitoring instrument.The utility model is to a large amount of improvement of original neutron detector from material to structure, is replaced by effective for traditional cylindricality BF3 counter spherical 3He proportional counter tube, substantially improves the angular response of detector while improving detector detection efficient; Solve anticorrosion, the sealing of original instrument, shielding, isotropism simultaneously and safeguard the problem of the aspect such as convenient.
This utility model comprises following concrete technical scheme:
A kind of neutron dose monitoring instrument, is characterized in that comprising slow body 1, shielding storehouse and base 2; Described shielding storehouse comprises shielding storehouse lid 3, shielding storehouse main part 4, shielding storehouse bottom 5; Wherein, bottom and the described slow body 1 of described shielding storehouse bottom 5 are tightly connected, and described shielding storehouse bottom 5 opening and main part 4 one openend, described shielding storehouse are tightly connected, and another openend of main part 4, described shielding storehouse and described shielding storehouse are covered 3 and be tightly connected; Described base 2 is provided with the groove that can hold described shielding storehouse, and described shielding storehouse is removably connected by this groove and described base 2; The bottom of described shielding storehouse bottom 5 is provided with a wire through-hole, and wire connects the detector in described slow body 1 and the circuit in described shielding storehouse by this wire through-hole.
Further, the added body 6 of slow body described in is provided with between described shielding storehouse bottom 5 and described slow body 1; Described added body 6 is same material with described slow body 1 and connects and composes a spheroid; Bottom and the described added body 6 of described shielding storehouse bottom 5 are tightly connected, and described added body 6 is provided with an aperture corresponding with described wire through-hole.
Further, one is provided with in described base for locking or unlock the locking device 7 in described shielding storehouse.
Further, described base is alloy aluminum base.
Further, described base is the alloy aluminum base after surface anodization process.
Further, described shielding storehouse main part 4 is annular; Described shielding storehouse bottom 5 is circular groove type.
Further, described shielding storehouse lid 3 and described shielding storehouse main part 4 adopt screw thread to add the anatomical connectivity of sealing ring; Described shielding storehouse main part 4 and described shielding storehouse bottom 5 adopt the inserted anatomical connectivity adding sealing ring; Described shielding storehouse bottom 5 and described added body 6 adopt the inserted anatomical connectivity adding sealing ring.
Compared with prior art, good effect of the present utility model is:
1, problem of oxidation is solved by selection material.Former base makes of iron plate, gets rusty easily in a humidity environment.The corrosion resistant alloy aluminum of high-quality is selected now to be raw material.
2, the casing of base is provided with good structural stability.
3, the design shielding storehouse is tending towards reasonable more.Shielding storehouse is modified into three-decker, makes its shielding, sealing, ground connection formedness and installation and debugging convenience all reach perfection.
4, the problem of the isotropism difference of slow body is solved.Structure is in the past that after the spheroid machining away part slow body makes it produce plane, be directly fixed on metal cabinet, this can cause the problem of the isotropism difference of slow body.Add now a slow body lid, ensure that isotropism.
5, the problem safeguarded and demarcate inconvenience is solved.This structure have employed the mode that slow body part is separated with base, make maintenance and demarcate more convenient.
Accompanying drawing explanation
Fig. 1 is monitor overall structure schematic diagram;
Fig. 2 is monitor base figure;
Fig. 3 is shielding chamber structure explosive view;
Fig. 4 is slow body structural representation;
Fig. 5 is slow body and base isolating construction schematic diagram;
Fig. 6 is understructure schematic diagram.
Wherein, 1-slow body, 2-base, 3-shields Cang Gai, 4-and shields storehouse main part, and 5-shields storehouse bottom, 6-added body, 7-locking device.
Detailed description of the invention
1, problem of oxidation is solved by selection material.
See Fig. 1: neutron detector from the appearance can be divided into base 2 and slow body 1 two parts.Now, base 2 selects the corrosion resistant alloy aluminum of high-quality to be raw material, then makes it have good antioxygenic property by surface anodization process.
2, the casing of base 2 is provided with good structural stability.
See Fig. 2: casing makes into by a monoblock alloy aluminum, adopt the cold worked methods such as cutting to make, make it without seam, it also avoid the generation of internal stress.Thus ensure that integrally-built stability.
3, the design shielding storehouse is tending towards reasonable more.
See Fig. 3, shielding storehouse is modified into three-decker, and every layer all have employed the interference that metal material can shield external electromagnetic field; Staple together between layers, and employ the seal with elastometic washer of use " O " type.The configuration achieves shielding, sealing, ground connection formedness and installation and debugging perfect unity easily.
Concrete installation steps:
A. first, the shielding bottom 5 in storehouse is connected with the added body 6 of slow body, structure adopts inserted and adds sealing ring, with bolt, the added body of slow body is fixed on the bottom in shielding storehouse.Then be assembled on the ball of the slow body having installed detector.The center of bottom 5 is opened a wire through-hole and is connect wire and derive in explorer count pipe that signal is to shielding storehouse amplifying circuit, and added body 6 is provided with an aperture corresponding with this wire through-hole.
B., next the main part 4 in shielding storehouse is installed.It and bottom 5 are also the inserted structures adding sealing ring, such a construction ensures good shielding and sealing.Inside is provided with for the fixing strong point of amplifying circuit, and sidewall is provided with two openings, and one provides high pressure for high voltage source to counting tube, and another is powered for amplifying circuit and signal after amplifying exports.
C. last, cover shielding storehouse lid 3.Shielding storehouse lid 3 and shielding storehouse main body 4 add the anatomical connectivity of sealing ring with screw thread.Equally, ensure that good shielding and sealing.
Summarize the structure in this shielding storehouse, make its shielding, sealing, ground connection formedness and installation and debugging convenience more outstanding.
4, the problem of the isotropism difference of slow body is solved.
See Fig. 4: the added body that we add a slow body now docks with the slow body ball machining away part, forms complete spheroid.Ensure that isotropism.
5, the problem safeguarded and demarcate inconvenience is solved.
See Fig. 5,6: this structure have employed the mode that slow body part is separated with base, make maintenance and demarcate more convenient; Wherein base 2 is provided with a locking device 7, and it can be locked with shielding storehouse bottom 5, fixes slow body.
Claims (7)
1. a neutron dose monitoring instrument, is characterized in that comprising slow body (1), shielding storehouse and base (2); Described shielding storehouse comprises shielding Cang Gai (3), shielding storehouse main part (4), shielding storehouse bottom (5); Wherein, bottom and the described slow body (1) of described shielding storehouse bottom (5) are tightly connected, described shielding storehouse bottom (5) opening and main part (4) openend, described shielding storehouse are tightly connected, and main part (4) another openend, described shielding storehouse and the described Cang Gai (3) that shields are tightly connected; Described base (2) is provided with the groove that can hold described shielding storehouse, and described shielding storehouse is removably connected by this groove and described base (2); The bottom of described shielding storehouse bottom (5) is provided with a wire through-hole, and wire connects the detector in described slow body (1) and the circuit in described shielding storehouse by this wire through-hole.
2. neutron dose monitoring instrument as claimed in claim 1, is characterized in that the added body (6) being provided with slow body described between described shielding storehouse bottom (5) and described slow body (1); Described added body (6) and described slow body (1) are for same material and connect and compose a spheroid; Bottom and the described added body (6) of described shielding storehouse bottom (5) are tightly connected, and described added body (6) is provided with an aperture corresponding with described wire through-hole.
3. neutron dose monitoring instrument as claimed in claim 1 or 2, is characterized in that being provided with one in described base for locking or unlock the locking device (7) in described shielding storehouse.
4. neutron dose monitoring instrument as claimed in claim 3, is characterized in that described base is alloy aluminum base.
5. neutron dose monitoring instrument as claimed in claim 4, is characterized in that described base is the alloy aluminum base after surface anodization process.
6. neutron dose monitoring instrument as claimed in claim 3, is characterized in that described shielding storehouse main part (4) is for annular; Described shielding storehouse bottom (5) is circular groove type.
7. neutron dose monitoring instrument as claimed in claim 5, is characterized in that described shielding Cang Gai (3) and described shielding storehouse main part (4) adopt screw thread to add the anatomical connectivity of sealing ring; Described shielding storehouse main part (4) and described shielding storehouse bottom (5) adopt the inserted anatomical connectivity adding sealing ring; Described shielding storehouse bottom (5) and described added body (6) adopt the inserted anatomical connectivity adding sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420701982.2U CN204302501U (en) | 2014-11-20 | 2014-11-20 | A kind of neutron dose monitoring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420701982.2U CN204302501U (en) | 2014-11-20 | 2014-11-20 | A kind of neutron dose monitoring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204302501U true CN204302501U (en) | 2015-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420701982.2U Expired - Fee Related CN204302501U (en) | 2014-11-20 | 2014-11-20 | A kind of neutron dose monitoring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204302501U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111257922A (en) * | 2020-02-17 | 2020-06-09 | 兰州大学 | BF with wide energy spectrum3Long neutron counter measuring system |
| CN113504559A (en) * | 2021-07-05 | 2021-10-15 | 中国科学院近代物理研究所 | High current pulse wide energy spectrum neutron dose rate monitoring device |
-
2014
- 2014-11-20 CN CN201420701982.2U patent/CN204302501U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111257922A (en) * | 2020-02-17 | 2020-06-09 | 兰州大学 | BF with wide energy spectrum3Long neutron counter measuring system |
| CN111257922B (en) * | 2020-02-17 | 2023-03-10 | 兰州大学 | BF with wide energy spectrum 3 Long neutron counter measuring system |
| CN113504559A (en) * | 2021-07-05 | 2021-10-15 | 中国科学院近代物理研究所 | High current pulse wide energy spectrum neutron dose rate monitoring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 Termination date: 20191120 |