CN207114774U - A kind of neutron dose rate measuring system - Google Patents
A kind of neutron dose rate measuring system Download PDFInfo
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- CN207114774U CN207114774U CN201720901975.0U CN201720901975U CN207114774U CN 207114774 U CN207114774 U CN 207114774U CN 201720901975 U CN201720901975 U CN 201720901975U CN 207114774 U CN207114774 U CN 207114774U
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Abstract
The utility model discloses a kind of neutron dose rate measuring system, including the reactor shell filled with polyethylene slow body and the circuit shell being arranged on outside the reactor shell, the measuring circuit being connected with the reaction mechanism is provided with the circuit shell, the measuring circuit includes controller, and the signal processing unit to be communicated with controller, client and host computer, the signal processing unit includes the detection circuit to connect successively, amplifying circuit, comparison circuit and triggers circuit, the triggers circuit is communicated with controller by main communication module, the detection circuit is connected with the proportional counter tubes of He 3.The utility model is simple in construction, reasonable in design, and the communication of neutron dose rate measuring instrumentss and external equipment is realized by measuring circuit, has intelligent and wider application, use is easy to operate, practical, and using effect is good, is easy to promote the use of.
Description
Technical field
The utility model belongs to nuclear radiation measurement instrument technical field, and in particular to a kind of neutron dose rate measuring system.
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.Existing neutron dose rate measuring instrumentss are big
All without using intelligent probe, communication can not be carried out with the equipment outside instrument main frame and connected, without intelligent functions, expanded
The function of detection device, so there is larger limitation in the application.Therefore needs one kind is simple in construction, reasonable in design, has
Intelligentized neutron dose rate measuring system, realizes the communication of neutron dose rate measuring instrumentss and external equipment, has intellectuality
Wider application.
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 system, its is simple in construction, reasonable in design, by measuring circuit realize neutron dose rate measuring instrumentss with it is external
The communication of equipment, there is intelligent and wider application, use is easy to operate, practical, and using effect is good, is easy to push away
It is wide to use.
In order to solve the above technical problems, the technical solution adopted in the utility model is：A kind of neutron dose rate measuring system,
It is characterized in that：Including the reactor shell filled with polyethylene slow body, the reaction mechanism being arranged in the reactor shell and
The circuit shell being arranged on outside the reactor shell, the reaction mechanism include the reative cell made of cadmium piece and are arranged on institute
The He-3 proportional counter tubes in reative cell are stated, the connection being detachably connected with the reactor shell is connected with the reative cell
Room, the junction chamber is interior to be filled with polyethylene slow body, and the high-voltage tube passed through for high-tension cable, institute are provided with the junction chamber
State He-3 proportional counter tubes to be connected with high-voltage tube, the port of the He-3 proportional counter tubes is connected with the high-tension cable, described
Reactor shell is spherical shell, and the measuring circuit being connected with the reaction mechanism, the survey are provided with the circuit shell
Measuring circuit includes controller, signal processing circuit and the actinometry main frame to be communicated with controller, mobile client and upper
Machine, the signal processing circuit include detection circuit, amplifying circuit, comparison circuit, the triggers circuit to connect successively, the detection
Circuit is connected with He-3 proportional counter tubes, and the triggers circuit connects with controller, and the output of the controller is terminated with main lead to
Believe module, the actinometry main frame is communicated by principal communication module with controller, and the mobile client is led to by client
News module and principal communication module communicate with controller, and the host computer passes through Upper machine communication module and principal communication module and control
Device communicates.
A kind of above-mentioned neutron dose rate measuring system, it is characterised in that：The user client communication module is bluetooth module.
A kind of above-mentioned neutron dose rate measuring system, it is characterised in that：The mobile client is mobile phone.
A kind of above-mentioned neutron dose rate measuring system, it is characterised in that：The Upper machine communication module is RS485 moulds
Block.
A kind of above-mentioned neutron dose rate measuring system, it is characterised in that：The detection circuit includes amplifier U1, field is imitated
Should pipe VT1, diode D1 and diode D2, three tunnels of the negative electrode of the He-3 proportional counter tubes point, all the way with resistance R9 one end
Connect, another way connects with electric capacity C14 one end, and the 3rd tunnel connects with electric capacity C7 one end, resistance R9 and electric capacity C14 connection
End ground connection, the electric capacity C7 other end connect with resistance R6 one end, resistance R6 three tunnels of the other end point, all the way with diode D1's
Anode connects, and another way connects with diode D2 negative electrode, and the 3rd tunnel connects with electric capacity C8 one end, diode D1 anode
Be grounded with the connection end of diode D2 negative electrode, the electric capacity C8 other end divides two-way, all the way with FET VT1 grid phase
Connect, FET VT1 drain electrode divides two-way, and the in-phase input end with amplifier U1 connects all the way, another way and the one of resistance R4
End connects, resistance R4 three tunnels of the other end point, and one end with electric capacity C5 connects all the way, and another way connects with electric capacity C4 one end,
3rd tunnel connects through resistance R3 with 5V power ends, and the connection end of the electric capacity C5 other end and the electric capacity C4 other end is grounded, VT1
Source electrode be grounded through resistance R8, three tunnels of amplifier U1 inverting input point, be grounded all the way through resistance R10, another way and resistance
R7 one end connects, and the 3rd tunnel connects with electric capacity C10 one end, and amplifier U1 output end divides two-way, all the way with resistance R7's
The connection end of the other end and electric capacity the C10 other end connects, and another way connects with resistance R5 one end, resistance R5 other end warp
Electric capacity C6 connects with amplifying circuit, and the anode of the He-3 proportional counter tubes divides two-way, and one end with resistance R1 connects all the way, separately
One end with electric capacity C1 connects all the way, and resistance R1 connects with electric capacity C1 connection end with high-tension cable.
A kind of above-mentioned neutron dose rate measuring system, it is characterised in that：The He-3 proportional counter tubes are detection pipes
LND25185。
A kind of above-mentioned neutron dose rate measuring system, it is characterised in that：The FET VT1 is 3DJ8H field-effects
Pipe.
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, the metric results of He-3 proportional counter tubes are sent to client and upper by the utility model by measuring circuit
Machine, the communication of neutron dose rate measuring instrumentss and external equipment is realized, there is intelligent and wider application.
In summary, the utility model is simple in construction, reasonable in design, and realizing neutron dose rate by measuring circuit measures
The communication of instrument and external equipment, there is intelligent and wider application, use is easy to operate, practical, uses effect
Fruit is good, is easy to promote the use of.
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.
Fig. 2 is schematic block circuit diagram of the present utility model.
Fig. 3 is the circuit connecting relation figure of the utility model detection circuit and He-3 proportional counter tubes.Description of reference numerals:
1-circuit shell；2-mobile client；3-reactor shell；
4-host computer；5-reative cell；6-He-3 proportional counter tubes；
7-high-voltage tube；8-Upper machine communication module；9-junction chamber；
10-controller；11-user client communication module；12-detection circuit；
13-amplifying circuit；14-comparison circuit；15-triggers circuit；
16-main communication module.
Embodiment
As shown in figure 1, the utility model includes the reactor shell 3 filled with polyethylene slow body, is arranged on the reaction
Reaction mechanism and the circuit shell 1 being arranged on outside the reactor shell 3 in housing 3, the reaction mechanism is including by cadmium piece
Manufactured reative cell 5 and the He-3 proportional counter tubes 6 being arranged in the reative cell 5, be connected with the reative cell 5 with it is described
The junction chamber 9 that reactor shell 3 is detachably connected, the junction chamber 9 is interior to be filled with polyethylene slow body, is set in the junction chamber 9
The high-voltage tube 7 passed through for high-tension cable is equipped with, the He-3 proportional counter tubes 6 are connected with high-voltage tube 7, the He-3 counters
The port of pipe 6 is connected with the high-tension cable, and the reactor shell 3 is spherical shell, is provided with the circuit shell 1 and institute
The measuring circuit that reaction mechanism is connected is stated, the measuring circuit includes controller 16, signal processing circuit and and controller
Actinometry main frame 17, mobile client 2 and the host computer 4 of 16 communications, the signal processing circuit include the spy to connect successively
Slowdown monitoring circuit 12, amplifying circuit 13, comparison circuit 14, triggers circuit 15, the detection circuit 12 and He-3 proportional counter tubes 6 connect
Connect, the triggers circuit 15 connects with controller 16, and the output of the controller 16 is terminated with principal communication module 10, the spoke
Penetrate measurement host 17 to communicate with controller 16 by principal communication module 10, the mobile client 2 passes through user client communication module
11 and principal communication module 10 communicated with controller 16, the host computer 4 by Upper machine communication module 8 and principal communication module 10 with
Controller 16 communicates.
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 9, 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, high-tension cable, the negative pole ground connection of high-tension cable are connected with high-voltage tube 7, the positive pole of high-tension cable connects
There is 0V~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 the He-3 proportional counter tubes 6 with3Nuclear reaction occurs for He atoms, and reaction product causes ionization, produced by ionization
Umber of pulse to reaction neutron population it is directly proportional.During reaction, the higher neutron of energy first carries out slowing down through polyethylene slow body so that
The Moderation of the fast neutrons of high-energy is into the thermal neutron of low energy, and thermal neutron is not substantially by slowing down.Thermal neutron after slowing down enters He-3
Proportional counter tube 6 with3He occurs nuclear reaction and releases proton, and proton is during the cathode motion to He-3 proportional counter tubes 6
Pulse signal is produced, completes the measurement to neutron.Pulse signal is handled by detection circuit 12, then according to amplifying circuit 13,
The processing of comparison circuit 14 and triggers circuit 15, handled finally by controller 16 and be calculated close rate, controller 16 is by agent
Dose rate signal sends actinometry main frame 17, mobile client 2 and host computer 4 to, realize neutron dose rate measurement apparatus with it is outer
Connect the communication of equipment.
As shown in figure 1, in the present embodiment, the user client communication module 11 is bluetooth module.
In the present embodiment, the mobile client 2 is mobile phone.
During actual use, dose rate signal sends the mobile phone of user to by bluetooth module, can realize that teledata passes
Defeated, convenient use person checks and stored.Mobile client 2 can also be tablet personal computer.
As shown in figure 1, in the present embodiment, the Upper machine communication module 8 is RS485 modules.
During actual use, actinometry information sends host computer 4 to by RS485 modules.
As shown in figure 3, in the present embodiment, the He-3 proportional counter tubes 6 are detection pipes LND25185.
As shown in figure 3, in the present embodiment, the FET VT1 is 3DJ8H FETs.
As shown in figure 3, in the present embodiment, the detection circuit 12 includes amplifier U1,3DJ8H FET, diode
D1 and diode D2, the detection pipes LND25185 negative electrode divide three tunnels, and one end with resistance R9 connects all the way, another way and electricity
The one end for holding C14 connects, and the 3rd tunnel connects with electric capacity C7 one end, resistance R9 and electric capacity C14 connection end ground connection, electric capacity C7's
The other end connects with resistance R6 one end, resistance R6 three tunnels of the other end point, and the anode with diode D1 connects all the way, another way
Connect with diode D2 negative electrode, the 3rd tunnel connects with electric capacity C8 one end, diode D1 anode and diode D2 negative electrode
Connection end ground connection, the electric capacity C8 other end divides two-way, and the grid with 3DJ8H FETs connects all the way, 3DJ8H FETs
Drain electrode divide two-way, the in-phase input end with amplifier U1 connects all the way, and another way connects with resistance R4 one end, resistance R4's
The other end point three tunnels, all the way one end with electric capacity C5 connect, another way connects with electric capacity C4 one end, the 3rd tunnel through resistance R3 and
5V power ends connect, and the connection end of the electric capacity C5 other end and the electric capacity C4 other end is grounded, and VT1 source electrode connects through resistance R8
Ground, amplifier U1 three tunnels of inverting input point, is grounded through resistance R10 all the way, and another way connects with resistance R7 one end, and the 3rd
Road connects with electric capacity C10 one end, and amplifier U1 output end divides two-way, all the way with the resistance R7 other end and electric capacity C10
The connection end of the other end connects, and another way connects with resistance R5 one end, and the resistance R5 other end is through electric capacity C6 and amplifying circuit
13 connect, and the anode of the detection pipes LND25185 divides two-way, and one end with resistance R1 connects all the way, and another way is with electric capacity C1's
One end connects, and resistance R1 connects with electric capacity C1 connection end with high-tension cable.
During actual use, pulse signal caused by nuclear reaction, the negative electrode output through He-3 proportional counter tubes 6, through electric capacity C14
Voltage pulse signal is formed with after electricity group R9 processing, electric capacity C7 and resistance R6 form peak absorbing circuit, so as to which suppression circuit shakes
Swing；Diode D1 and diode D2 is model 1N4148 diode, diode D1 and diode D2 reverse parallel connections, then when
When the peak value of pulse signal is more than diode D1 forward conduction magnitude of voltage, pulse signal can be by the way that 3DJ8H FETs are N
Channel junction field-effect pipe, the change of drain electrode output current is controlled by changing input grid current, so as to realize that amplification is made
With, homophase input of the drain electrode output current as amplifier U1, amplifier U1 uses model LF357BN amplification buffer,
Input signal of the output signal of LF357BN amplification buffers as amplifying circuit 13, carries out subsequent treatment.
When it is implemented, the higher neutron of energy first carries out slowing down through polyethylene slow body so that the fast neutron of high-energy
Slowing down is into the thermal neutron of low energy, and thermal neutron is not substantially by slowing down.Thermal neutron after slowing down enter He-3 proportional counter tubes 6 with3He atoms occur nuclear reaction and release proton, and proton produces pulse letter during the cathode motion to He-3 proportional counter tubes 6
Number, neutron ray causes ionization in He-3 proportional counter tubes 6, and umber of pulse caused by ionization is directly proportional to reaction neutron population,
Complete the measurement to neutron.Pulse signal is handled by detection circuit 12, and judgement draws close rate, then according to amplifying circuit
13rd, the processing of comparison circuit 14 and triggers circuit 15, dose rate signal is sent to controller 16, controller 16 passes through main communication
Module 10 sends dose rate signal to actinometry master, and 17, controller 16 passes through main communication module 10 and user client communication mould
Block 11 sends dose rate signal to mobile client 2, and controller 16 passes through main communication module 10 and Upper machine communication module 8
Send dose rate signal to host computer 4, realize the communication of neutron dose rate measurement apparatus and external equipment, improve neutron agent
The intellectuality of dose rate measurement apparatus and use range.
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 measuring system, it is characterised in that：Including the reactor shell (3) filled with polyethylene slow body, The reaction mechanism being arranged in the reactor shell (3) circuit shell (1) outside with the reactor shell (3) is arranged on, institute Stating reaction mechanism includes reative cell (5) and the He-3 proportional counter tubes being arranged in the reative cell (5) made of cadmium piece (6) junction chamber (9) being detachably connected with the reactor shell (3), the junction chamber (9), are connected with the reative cell (5) It is interior to be filled with polyethylene slow body, it is provided with the high-voltage tube (7) passed through for high-tension cable, the He-3 in the junction chamber (9) Proportional counter tube (6) is connected with high-voltage tube (7), and the port of the He-3 proportional counter tubes (6) is connected with the high-tension cable, institute It is spherical shell to state reactor shell (3), and the measurement electricity being connected with the reaction mechanism is provided with the circuit shell (1) Road, the measuring circuit include controller (16), signal processing circuit and the actinometry main frame to be communicated with controller (16) (17), mobile client (2) and host computer (4), the signal processing circuit include detection circuit (12), the amplification to connect successively Circuit (13), comparison circuit (14), triggers circuit (15), the detection circuit (12) are connected with He-3 proportional counter tubes (6), institute State triggers circuit (15) with controller (16) to connect, the output of the controller (16) is terminated with principal communication module (10), described Actinometry main frame (17) is communicated by principal communication module (10) with controller (16), and the mobile client (2) passes through client End communication module (11) and principal communication module (10) communicate with controller (16), and the host computer (4) passes through upper machine communication mould Block (8) and principal communication module (10) communicate with controller (16).
- 2. according to a kind of neutron dose rate measuring system described in claim 1, it is characterised in that：The user client communication module (11) it is bluetooth module.
- 3. according to a kind of neutron dose rate measuring system described in claim 1, it is characterised in that：The mobile client (2) For mobile phone.
- 4. according to a kind of neutron dose rate measuring system described in claim 1, it is characterised in that：The Upper machine communication module (8) it is RS485 modules.
- 5. according to a kind of neutron dose rate measuring system described in claim 1, it is characterised in that：Detection circuit (12) bag Amplifier U1, FET VT1, diode D1 and diode D2 are included, the negative electrode of the He-3 proportional counter tubes (6) divides three tunnels, One end with resistance R9 connects all the way, and another way connects with electric capacity C14 one end, and the 3rd tunnel connects with electric capacity C7 one end, electricity R9 and electric capacity C14 connection end ground connection is hindered, the electric capacity C7 other end connects with resistance R6 one end, the resistance R6 other end point three Road, all the way the anode with diode D1 connect, another way connects with diode D2 negative electrode, the 3rd tunnel and electric capacity C8 one end phase Connect, the connection end of diode D1 anode and diode D2 negative electrode is grounded, and the electric capacity C8 other end divides two-way, is imitated all the way with field Should pipe VT1 grid connect, FET VT1 drain electrode divides two-way, and the in-phase input end with amplifier U1 connects all the way, another Road connects with resistance R4 one end, resistance R4 three tunnels of the other end point, and one end with electric capacity C5 connects all the way, another way and electric capacity C4 one end connects, and the 3rd tunnel connects through resistance R3 with 5V power ends, the company of the electric capacity C5 other end and the electric capacity C4 other end End ground connection is connect, VT1 source electrode is grounded through resistance R8, amplifier U1 three tunnels of inverting input point, is grounded all the way through resistance R10, Another way connects with resistance R7 one end, and the 3rd tunnel connects with electric capacity C10 one end, and amplifier U1 output end divides two-way, and one The connection end of road and resistance the R7 other end and the electric capacity C10 other end connects, and another way connects with resistance R5 one end, resistance The R5 other end connects through electric capacity C6 with amplifying circuit (13), and the anode of the He-3 proportional counter tubes (6) divides two-way, all the way with Resistance R1 one end connects, and another way connects with electric capacity C1 one end, resistance R1 and electric capacity C1 connection end and high-tension cable phase Connect.
- 6. according to a kind of neutron dose rate measuring system described in claim 1, it is characterised in that：The He-3 proportional counter tubes (6) it is detection pipes LND25185.
- 7. according to a kind of neutron dose rate measuring system described in claim 5, it is characterised in that：The FET VT1 is 3DJ8H FETs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720901975.0U CN207114774U (en) | 2017-07-24 | 2017-07-24 | A kind of neutron dose rate measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720901975.0U CN207114774U (en) | 2017-07-24 | 2017-07-24 | A kind of neutron dose rate measuring system |
Publications (1)
| Publication Number | Publication Date |
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| CN207114774U true CN207114774U (en) | 2018-03-16 |
Family
ID=61585906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720901975.0U Active CN207114774U (en) | 2017-07-24 | 2017-07-24 | A kind of neutron dose rate measuring system |
Country Status (1)
| Country | Link |
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| CN (1) | CN207114774U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109269538A (en) * | 2018-10-16 | 2019-01-25 | 中国海洋石油集团有限公司 | One kind is with brill neutron He3 pipe scale test device |
-
2017
- 2017-07-24 CN CN201720901975.0U patent/CN207114774U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109269538A (en) * | 2018-10-16 | 2019-01-25 | 中国海洋石油集团有限公司 | One kind is with brill neutron He3 pipe scale test device |
| CN109269538B (en) * | 2018-10-16 | 2021-02-05 | 中国海洋石油集团有限公司 | Measurement-while-drilling neutron He3 tube scale testing device |
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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. |
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| CP01 | Change in the name or title of a patent holder |