CN206960668U - A kind of neutron dose rate measurement apparatus - Google Patents
A kind of neutron dose rate measurement apparatus Download PDFInfo
- Publication number
- CN206960668U CN206960668U CN201720901973.1U CN201720901973U CN206960668U CN 206960668 U CN206960668 U CN 206960668U CN 201720901973 U CN201720901973 U CN 201720901973U CN 206960668 U CN206960668 U CN 206960668U
- Authority
- CN
- China
- Prior art keywords
- neutron
- reactor shell
- reative cell
- dose rate
- measurement apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Measurement Of Radiation (AREA)
Abstract
The utility model discloses a kind of neutron dose rate measurement apparatus, including the reactor shell filled with polyethylene slow body and the reaction mechanism being arranged in reactor shell, reaction mechanism includes reative cell and the proportional counter tubes of He 3 being arranged in the reative cell made of cadmium piece, the junction chamber being detachably connected with the reactor shell is connected with reative cell, polyethylene slow body is filled with junction chamber, the high-voltage tube passed through for high-tension cable is provided with junction chamber, the through hole passed through for high-voltage tube is offered on reative cell and reactor shell, the proportional counter tubes of He 3 are connected with high-voltage tube.The utility model is simple in construction, reasonable in design, and neutron ray is measured using the proportional counter tubes of He 3, and energy calibration is carried out by reative cell made of cadmium piece, reactor shell is spherical shell, with broad quantum, energy response is good, the advantages that being measured to the higher-energy neutron such as fast neutron.
Description
Technical field
The utility model belongs to nuclear radiation measurement instrument technical field, and in particular to a kind of neutron dose rate measurement apparatus.
Background technology
As the development of national economy, the development of Nuclear Electricity, the application field of nuclear radiation detection instrument are more and more wider, agent
Dose rate monitor is to use a kind of very wide nuclear instrument.At present, existing a variety of radiation in domestic nuclear radiation monitoring instrument market
Monitoring instrument, wherein most are higher essentially from foreign countries, price；Mainly surveyed in the nuclear radiation monitoring product of domestic production
It is more to measure the dose rate instrument of Photon beam, the fewer of neutron can be measured.Have in the research and nuclear energy application of nuclear physics
Close and be frequently necessary to determine neutron dosage rate in the measurement of data.Because neutron neutral, its detection are complex.In order to survey
Measure convenient and can guarantee that accuracy, usually select some neutron sources, their intensity is accurately determined, and made with them
For standard, for demarcating the efficiency of the intensity of other neutron sources and neutron detector.Current domestic neutron measurement instrument is most
Using column slow body, aspherical slow body, waiting a moment body thickness are relatively thin, are not reaching to the optimal thickness of moderating effect, especially
It is not take good energy calibration measure, so the energy response to neutron measurement is poor, measures confidence level and error
Just greatly increase.By to it is current both at home and abroad about radiation meter in terms of information investigate, it is therefore necessary to develop one kind
Neutron dose rate measurement apparatus.
Utility model content
Technical problem to be solved in the utility model is to be directed to above-mentioned deficiency of the prior art, there is provided a kind of neutron
Dose rate measurement device, its is simple in construction, reasonable in design, measures neutron ray using He-3 proportional counter tubes, passes through cadmium piece system
Into reative cell carry out energy calibration, reactor shell is spherical shell, has broad quantum, and energy response is good, can be to fast neutron etc.
The advantages that higher-energy neutron measures, use is easy to operate, practical, and using effect is good, is easy to promote the use of.
In order to solve the above technical problems, the technical solution adopted in the utility model is：A kind of neutron dose rate measurement apparatus,
It is characterized in that：Including the reactor shell filled with polyethylene slow body and the reaction mechanism that is arranged in the reactor shell,
The reaction mechanism includes reative cell and the He-3 proportional counter tubes being arranged in the reative cell made of cadmium piece, described anti-
The junction chamber for being connected with room and being detachably connected with the reactor shell is answered, polyethylene slow body is filled with the junction chamber,
The high-voltage tube passed through for high-tension cable is provided with the junction chamber, is offered for high pressure on the reative cell and reactor shell
Pipe through through hole, the He-3 proportional counter tubes are connected with high-voltage tube, port and the height of the He-3 proportional counter tubes
Voltage cable connects, and the reactor shell is spheroid, and the reative cell is cylindrical structure.
A kind of above-mentioned neutron dose rate measurement apparatus, it is characterised in that：The lower end of the reactor shell is provided with leg.
A kind of above-mentioned neutron dose rate measurement apparatus, it is characterised in that：Handle is provided with the reactor shell.
A kind of above-mentioned neutron dose rate measurement apparatus, it is characterised in that：It is provided with the reactor shell with main frame branch
Support.
A kind of above-mentioned neutron dose rate measurement apparatus, it is characterised in that：A diameter of 150mm~250mm of the spheroid.
A kind of above-mentioned neutron dose rate measurement apparatus, it is characterised in that：The inwall of the reative cell and the He-3 are just
The distance between outer wall than counting tube is 10mm~30mm.
A kind of above-mentioned neutron dose rate measurement apparatus, it is characterised in that：The thickness of the reative cell be 0.25mm~
2.5mm。
The utility model has advantages below compared with prior art：
1st, it is of the present utility model simple in construction, reasonable in design, realize and using easy to operate.
2nd, reactor shell of the present utility model is spherical shell, and spherical shell thickness is moderate so that neutron and He-3 are just
Fully contacted than counting tube, improve the moderating effect to high-energy neutron.
3rd, the utility model carries out energy using He-3 proportional counter tubes measurement neutron ray by reative cell made of cadmium piece
Amount calibration, has broad quantum, energy response is good, the advantages that being measured to the higher-energy neutron such as fast neutron.
In summary, the utility model is simple in construction, reasonable in design, and neutron ray is measured using He-3 proportional counter tubes,
Energy calibration is carried out by reative cell made of cadmium piece, reactor shell is spherical shell, has broad quantum, energy response is good, can
The advantages that being measured to the higher-energy neutron such as fast neutron, use is easy to operate, practical, and using effect is good, is easy to push away
It is wide to use.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Description of reference numerals:
1-junction chamber；2-handle；3-reactor shell；
4-leg；5-reative cell；6-He-3 proportional counter tubes；
7-high-voltage tube；8-main frame support frame.
Embodiment
As shown in figure 1, the utility model includes the reactor shell 3 filled with polyethylene slow body and is arranged on the reaction
Reaction mechanism in housing 3, the reaction mechanism include the reative cell 5 made of cadmium piece and are arranged in the reative cell 5
He-3 proportional counter tubes 6, the junction chamber 1 being detachably connected with the reactor shell 3, the company are connected with the reative cell 5
Connect in room 1 and be filled with polyethylene slow body, the high-voltage tube 7 passed through for high-tension cable, the reaction are provided with the junction chamber 1
The through hole passed through for high-voltage tube 7 is offered on room 5 and reactor shell 3, the He-3 proportional counter tubes 6 are connected with high-voltage tube 7,
The port of the He-3 proportional counter tubes 6 is connected with the high-tension cable, and the reactor shell 3 is spheroid.
Reactor shell 3 is set to be for the purpose of spheroid：Improve the angular response performance of neutron dose rate measurement.Reative cell
5 made of cadmium piece purpose be：Cadmium plays a part of calibrating neutron energy, when the relatively low neutron of energy is by cadmium piece, does not damage
Disability amount, when the higher neutron of energy passes through partition, part energy is transmitted to cadmium, so that be reduced to can be with for neutron energy
In He-3 proportional counter tubes 63Nuclear reaction occurs for He atoms, so as to improve measurement confidence level, reduces measurement error.Reative cell 5
The purpose of interior setting He-3 proportional counter tubes 6 is：Neutron by with He-3 proportional counter tubes 63It is anti-that core occurs for He atoms
Should so that neutron can be recorded, and realize the measurement of neutron dose rate.The purpose for setting junction chamber 1 is：It is convenient to fill
There are placing response room 5 in the reactor shell 3 of polyethylene slow body, He-3 proportional counter tubes 6 and high-voltage tube 7.Reactor shell 3 is filled
Polyethylene slow body as outer slow body, the polyethylene slow body of filling plays reduction as interior slow body in junction chamber 1
The effect of neutron energy.High-voltage tube 7 is set in junction chamber 1, has high-tension cable, the port of He-3 proportional counter tubes 6 in high-voltage tube 7
It is connected with high-tension cable, for applying high pressure to He-3 proportional counter tubes 6 so that neutron ray is in He-3 proportional counter tubes 6
Cause ionization, the measurement to neutron is completed by impulse magnitude caused by ionization.
During actual use, the higher neutron of energy first carries out slowing down through outer slow body so that neutron energy gradually reduces, slowly
Neutron after change enters reative cell 5 made of cadmium piece, and cadmium piece plays a part of calibrating neutron energy, and then neutron is entering He-3 just
Nuclear reaction occurs than counting tube 6 and He-3 elements and releases proton, process of the proton in the cathode motion to He-3 proportional counter tubes 6
Middle generation pulse signal, neutron ray in He-3 proportional counter tubes 6 with neutron penetrate caused by caused ionization by impulse magnitude
The energy of line is directly proportional, completes the measurement to neutron.
As shown in figure 1, in the present embodiment, the lower end of the reactor shell 3 is provided with leg 4.During actual use, leg 4
Number be 3,3 legs reactor shell 3 can be fixed it is vertical in the plane, add the steadiness of device.
As shown in figure 1, in the present embodiment, handle 2 is provided with the reactor shell 3.Reaction is moved easily by handle 2
Housing 3, using effect are good.
As shown in figure 1, in the present embodiment, main frame support frame 8 is provided with the reactor shell 3.
In the present embodiment, a diameter of 150mm~250mm of the spheroid.The suitable reactor shell 3 of thickness have it is high in
Sub- moderating efficiency, neutron measurement efficiency and measuring range are improved, by experimental analysis, determine a diameter of of reactor shell 3
150mm~250mm.
In the present embodiment, the reative cell 5 is cylinder, the inwall of the reative cell 5 and the He-3 proportional counter tubes 6
The distance between outer wall be 10mm~30mm.During actual use, reative cell 5 is located at the centre position of reactor shell 3, and He-3 is just
Than the centre position that counting tube 6 is located at reative cell 5 so that neutron has bigger probability that nuclear reaction occurs with He-3.
In the present embodiment, the thickness of the reative cell 5 is 0.25mm~2.5mm.Reative cell 5 is made up of cadmium piece, cadmium material
For carrying out neutron energy calibration, the thickness of cadmium piece is 0.25mm~2.5mm.In the present embodiment, the thickness for selecting cadmium piece is 1mm.
When it is implemented, being connected with high-tension cable in high-voltage tube 7, the negative pole ground connection of high-tension cable, the positive pole of high-tension cable connects
There is 700V~1000V high pressure, He-3 proportional counter tubes 6 connect with high-tension cable, when to the application high pressure of He-3 proportional counter tubes 6
When, neutron ray in He-3 proportional counter tubes 6 energy of impulse magnitude and neutron ray caused by caused ionization into just
Than.During reaction, the higher neutron of energy first carries out slowing down through polyethylene slow body so that neutron energy gradually reduces, after slowing down
Neutron enter reative cell 5 made of cadmium piece, cadmium piece plays a part of calibrating neutron energy, improves the confidence level of measurement, then
Neutron, which enters He-3 proportional counter tubes 6 and He-3 elements nuclear reaction occurs, produces proton and triton, and proton is to He-3 direct ratio meters
Pulse signal is produced during the cathode motion of number pipe 6, pulse signal is drawn through electronic system, completes the measurement to neutron.
It is described above, only it is embodiment of the present utility model, not the utility model is imposed any restrictions, it is every according to this
Any simple modification, change and the equivalent structure change that utility model technical spirit is made to above example, still fall within
In the protection domain of technical solutions of the utility model.
Claims (7)
- A kind of 1. neutron dose rate measurement apparatus, it is characterised in that：Including the reactor shell (3) filled with polyethylene slow body and The reaction mechanism being arranged in the reactor shell (3), the reaction mechanism include the reative cell (5) made of cadmium piece and set He-3 proportional counter tubes (6) in the reative cell (5), being connected with the reative cell (5) can with the reactor shell (3) The junction chamber (1) of dismantling connection, the junction chamber (1) is interior to be filled with polyethylene slow body, and confession is provided with the junction chamber (1) The high-voltage tube (7) that high-tension cable passes through, offer what is passed through for high-voltage tube (7) in the reative cell (5) and reactor shell (3) Through hole, the He-3 proportional counter tubes (6) are connected with high-voltage tube (7), port and the height of the He-3 proportional counter tubes (6) Voltage cable connects, and the reactor shell (3) is spheroid, and the reative cell (5) is cylindrical structure.
- 2. according to a kind of neutron dose rate measurement apparatus described in claim 1, it is characterised in that：The reactor shell (3) Lower end is provided with leg (4).
- 3. according to a kind of neutron dose rate measurement apparatus described in claim 1, it is characterised in that：On the reactor shell (3) It is provided with handle (2).
- 4. according to a kind of neutron dose rate measurement apparatus described in claim 1 or 3, it is characterised in that：The reactor shell (3) On be provided with main frame support frame (8).
- 5. according to a kind of neutron dose rate measurement apparatus described in claim 1, it is characterised in that：The spheroid it is a diameter of 150mm~250mm.
- 6. according to a kind of neutron dose rate measurement apparatus described in claim 1, it is characterised in that：The reative cell (5) it is interior The distance between wall and the outer wall of the He-3 proportional counter tubes (6) are 10mm~30mm.
- 7. according to a kind of neutron dose rate measurement apparatus described in claim 1, it is characterised in that：The thickness of the reative cell (5) Spend for 0.25mm~2.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720901973.1U CN206960668U (en) | 2017-07-24 | 2017-07-24 | A kind of neutron dose rate measurement apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720901973.1U CN206960668U (en) | 2017-07-24 | 2017-07-24 | A kind of neutron dose rate measurement apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206960668U true CN206960668U (en) | 2018-02-02 |
Family
ID=61381310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720901973.1U Active CN206960668U (en) | 2017-07-24 | 2017-07-24 | A kind of neutron dose rate measurement apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206960668U (en) |
-
2017
- 2017-07-24 CN CN201720901973.1U patent/CN206960668U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107492399B (en) | A method of ex-core detector scale is completed using flux measurement in single heap | |
| CN204988276U (en) | Laser is perpendicular / horizontal measuring device | |
| CN204009085U (en) | A kind of nuclear power plant hydrogeneous waste gas radioactivity continuous monitoring device | |
| CN112526584A (en) | Neutron energy spectrum measuring device and measuring method thereof | |
| CN105496432A (en) | Anti-universe ray system for internal exposure measurement and anti-coincidence method | |
| CN202421506U (en) | X and gamma dosage rate measurement device | |
| CN206960668U (en) | A kind of neutron dose rate measurement apparatus | |
| US9207335B2 (en) | Self powered neutron detector | |
| CN107966727A (en) | A kind of neutron composite detecting device | |
| CN101750623B (en) | Portable energy adjusting device for heat energy-100 MeV neutron | |
| CN205176286U (en) | Anti - compton scatter detector | |
| CN104730558A (en) | Cosmic ray mu imaging precision drift tube position sensitive detector | |
| CN108877970A (en) | A kind of presurized water reactor primary Ioops boundary leaking monitoring method, system and monitor | |
| CN202661630U (en) | Transmission type monitoring ionization chamber suitable for measurement of low-energy X-rays | |
| CN207114774U (en) | A kind of neutron dose rate measuring system | |
| CN103472475A (en) | Transmission-type monitoring ionization chamber suitable for low-energy X-ray measurement | |
| CN203241541U (en) | Device for measuring high-concentration tritium in gas | |
| CN203415539U (en) | Ionization chamber | |
| CN112764087B (en) | Neutron energy spectrum measuring device based on inflatable concentric ball | |
| CN212515062U (en) | Neutron detection device for laser inertial confinement fusion | |
| CN204374429U (en) | A kind of inflatable beta rediation detector measured for radioactive gas nuclide | |
| CN204204794U (en) | A kind of standard type high-pressure ionization chamber | |
| CN205317951U (en) | X ray energy fluence measuring device | |
| CN107024712A (en) | One kind is determined235The device of U mass | |
| CN209215590U (en) | A kind of cylinder internal gas proportional counter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Yanta District in Shaanxi province Xi'an City Road 710061, No. 108 Patentee after: Xi'an Zhonghe Nuclear Instrument Co.,Ltd. Address before: Yanta District in Shaanxi province Xi'an City Road 710061, No. 108 Patentee before: XI'AN ZHONGHE NUCLEAR APPARATUS CO.,LTD. |