CN209400707U - A kind of intelligence radon thorium analyzer - Google Patents
A kind of intelligence radon thorium analyzer Download PDFInfo
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- CN209400707U CN209400707U CN201822208454.4U CN201822208454U CN209400707U CN 209400707 U CN209400707 U CN 209400707U CN 201822208454 U CN201822208454 U CN 201822208454U CN 209400707 U CN209400707 U CN 209400707U
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- scintillation chamber
- counting circuit
- scintillation
- intelligence
- probe
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Abstract
The utility model belongs to technical field of nuclear radiation measurement, and in particular to a kind of intelligence radon thorium analyzer.Scintillation chamber is made of the hollow organic glass of upper and lower two hemisphericals, inside it is coated with zinc sulfide scintillator, there are two gas nozzles for installation at the top of the episphere of scintillation chamber, the crystal partition of two pieces of intersections is installed in scintillation chamber, two pieces of partitions separate two gas nozzles, it emanates by circling around scintillation chamber and being flowed out from another gas nozzle after a gas nozzle air inlet；Probe is provided with photomultiplier tube and divider；Probe output is sent into counting circuit processing, and counting circuit filtering screens interference signal and noise by a small margin, retains the biggish pulse of amplitude, is the calibration pulse with same pulse width by the signal shaping after examination, is counted；Counting circuit is interacted with host computer.The utility model is cheap, detection efficient is high, intelligent and portable.
Description
Technical field
The utility model belongs to technical field of nuclear radiation measurement, and in particular to a kind of intelligence radon thorium analyzer.
Background technique
Radon thorium analyzer is the emanation measurement device for radioactive element radon radium thorium content, it is also possible to measure water sample
And in tunnel micro emanation radon concentration.Only one scintillation chamber of traditional radon thorium analyzer, needs pair in sample replacement process
Probe is protected from light, and is prevented probe from exposing, is influenced to measure.And it could be acquired again after needing to vacuumize scintillation chamber
Sample, process is relative complex, is readily incorporated human error.Equipment need with scaler be used cooperatively, need manual calculations concentration,
The deficiencies of no intelligent printing reports, has been unable to satisfy the increasing demand of client.
Summary of the invention
The purpose of this utility model is to provide it is a kind of it is easy to operate, detection efficient is high, the intelligent radon thorium of intelligent and portable point
Analyzer, to overcome the above shortcomings in the prior art.
In order to achieve the above objectives, technical solution adopted in the utility model are as follows:
A kind of intelligence radon thorium analyzer, including scintillation chamber, probe, counting circuit, communication module, high-pressure modular, low pressure molding
Block and host computer；Scintillation chamber is made of the hollow organic glass of upper and lower two hemisphericals, is inside coated with zinc sulfide scintillator, scintillation chamber
Installation is equipped with the crystal partitions of two pieces of intersections, two pieces of partitions are two gas nozzles there are two gas nozzle in scintillation chamber at the top of episphere
It separates, emanates by circling around scintillation chamber and being flowed out from another gas nozzle after a gas nozzle air inlet；Probe be provided with photomultiplier tube and
Divider；Probe output is sent into counting circuit, and counting circuit filtering screens interference signal and noise by a small margin, retains
Signal shaping after examination is the calibration pulse with same pulse width, is counted by the biggish pulse of amplitude；Counting circuit is logical
Communication module is crossed to interact with host computer；High-pressure modular provides high pressure for photomultiplier tube work；Low-voltage module is to count electricity
Road and communication module provide stable low-voltage power supply.
The flashing building volume is 500ml.
Three scintillation chambers can be installed on disk, make disk rotational by handle to change the position of scintillation chamber, do not stopping
Scintillation chamber is replaced in the case where machine.
The probe is sealed construction, is fixed on the elastic support with retractility.
It is had the beneficial effect that acquired by the utility model
For the deficiency on traditional radon thorium analyser function, the utility model devises rotary type disk, can on disk
To install three scintillation chambers at a distance of hexagonal angle, one of scintillation chamber is located at the upper end of photomultiplier tube, is tested scintillation chamber,
Other scintillation chambers Liang Ge are then in the state of being protected from light, and wait to be measured.It can make disk rotational by handle to change the position of scintillation chamber
And guarantee that detector is protected from light, scintillation chamber can be replaced in non-stop-machine situation in this way, save time of measuring, reduced artificial
Error.Devise counting unit, be fixed on instrument base, and connect with host computer, may be implemented counting, concentration calculation,
The functions such as data preservation, printing.The utility model has complete data processing function, may be implemented to count display, densimeter
The functions such as calculation, alarm, storage, data export.According to the calculation formula of radium in radon in the water of national standard, water, phase may be implemented
The concentration calculation answered, and combine the industry requirements such as geology, earthquake and made data sheet, it is provided greatly just for user
Benefit.
Detailed description of the invention
Fig. 1 is intelligent radon thorium analyzer structure chart；
In figure: 1, scintillation chamber；2, it pops one's head in；3, counting circuit；4, communication module；5, high-pressure modular；6, low-voltage module；7, on
Position machine.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, intelligence radon thorium analyzer described in the utility model includes scintillation chamber 1, probe 2, counting circuit 3, leads to
Believe module 4, high-pressure modular 5, low-voltage module 6 and host computer 7.
Scintillation chamber 1 is made of the hollow organic glass of upper and lower two hemisphericals, is inside coated with zinc sulfide scintillator, it be by means of
Outer packing reaches sealing.Installation is there are two gas nozzle at the top of the episphere of scintillation chamber 1, have in scintillation chamber 1 crystal of two pieces of intersections every
Plate, two pieces of partitions separate two gas nozzles, emanate by circling around scintillation chamber and flowing out from another gas nozzle after a gas nozzle air inlet.
When loading and unloading the outer packing of scintillation chamber 1, preferably scintillation chamber 1 is first evacuated, then with specific purpose tool on gland (dead ring)
Tightly or unscrew, to protect gland that will not damage.1 volume of scintillation chamber is 500ml.Three scintillation chambers 1 can be installed on disk.By
Handle can make disk rotational to change the position of scintillation chamber 1, can replace scintillation chamber 1 in non-stop-machine situation in this way.
The optical signal of scintillator is converted into electric signal by probe 2.Probe 2 is sealed construction, is provided with photomultiplier tube
And divider, they are all fixed on the elastic support with retractility, and after guaranteeing replacement photomultiplier tube, photocathode still may be used
Connect by ground with scintillation chamber 1.
2 output signals of popping one's head in are sent into counting circuit 3 and are handled, and the filtering of counting circuit 3 screens interference signal by a small margin and makes an uproar
Sound retains the biggish pulse of amplitude, is the calibration pulse with same pulse width by the signal shaping after examination, is counted.Meter
Number circuit 3 is interacted by communication module 4 with host computer 7.
High-pressure modular 5 provides high pressure for photomultiplier tube work.
Low-voltage module 6 is that counting circuit 3 and communication module 4 provide stable low-voltage power supply.
Host computer 7 has the function of to count display, concentration calculation, alarm, storage, data export, report generation and printing etc..
The course of work is as follows: this radon thorium analyzer work when, photoimpact be by scintillation chamber 1, photomultiplier tube and its
It is generated when the circuit work of plate-load combination, wherein high pressure provides multistage pressure by divider for photomultiplier tube.When
It emanates after introducing scintillation chamber 1, emanates on the α particle impacting to zinc sulfide crystal generated during transformation, alpha-particle energy transfer
To zinc sulfide crystal, cause zinc sulphide atomic excitation and glisten and release photon, this photon is received by the photomultiplier tube in work
Afterwards, photoelectron is generated on its photocathode, completes photoelectric conversion.Photoelectron is focused on photomultiplier tube by the effect of electric field
Beat and take on plate, secondary electron is inspired, finally, secondary electron is accelerated to zoom into electron stream, through high frequency cable in photoelectricity times
Increase and forms a pulse current on the anode load resistor of pipe and export a negative pulse voltage.
In scintillation chamber 1, the number of α particle is directly proportional to the concentration emanated, i.e., directly proportional to the frequency of flash of light.Therefore:
The pulse frequency of record photomultiplier tube output has also been known that the concentration of emanating in scintillation chamber 1, the i.e. content or activity of radium thorium.
For surveying radon (survey radium), due to the half-life period of emanation radon much longer than the daughter element half-life period of radon, so
The α particle that the daughter element in measurement process, not only having recorded the α particle of emanation radon generation, and having recorded radon is released.Cause
This, after introducing is emanated, the umber of pulse that counting circuit 3 is recorded in the same time is at any time and increased.According to experiment, penetrate
After gas introduces scintillation chamber 1-1.5 hours, the increase of intensity is just slower.Measurement accuracy just can satisfy analysis and require.Cause
This, using scintillation chamber 1 survey radium when, it is proposed that preferably emanate introduce scintillation chamber 1.5 hours after measure.
When surveying thorium, since the half-life period of thorium emanation is shorter, therefore in measurement, thorium emanation must flow in scintillation chamber 1,
Dynamic equilibrium state is kept, in order to which voltage drop method can be used using existing equipment in laboratory.
Claims (4)
1. a kind of intelligence radon thorium analyzer, it is characterised in that: including scintillation chamber, probe, counting circuit, communication module, high pressing mold
Block, low-voltage module and host computer；Scintillation chamber is made of the hollow organic glass of upper and lower two hemisphericals, is inside coated with vulcanization zinc flash
Body, installation is equipped with the crystal partitions of two pieces of intersections, two pieces of partitions there are two gas nozzle in scintillation chamber at the top of the episphere of scintillation chamber
Two gas nozzles are separated, are emanated by circling around scintillation chamber and being flowed out from another gas nozzle after a gas nozzle air inlet；Probe is provided with light
Electric multiplier tube and divider；Probe output be sent into counting circuit, counting circuit filtering, screen fall by a small margin interference signal and
Noise retains the biggish pulse of amplitude, is the calibration pulse with same pulse width by the signal shaping after examination, is counted；
Counting circuit is interacted by communication module and host computer；High-pressure modular provides high pressure for photomultiplier tube work；Low pressure molding
Block provides stable low-voltage power supply for counting circuit and communication module.
2. intelligence radon thorium analyzer according to claim 1, it is characterised in that: the flashing building volume is 500ml.
3. intelligence radon thorium analyzer according to claim 1, it is characterised in that: three scintillation chambers can be installed on disk,
Make disk rotational by handle to change the position of scintillation chamber, replaces scintillation chamber in non-stop-machine situation.
4. intelligence radon thorium analyzer according to claim 1, it is characterised in that: the probe is sealed construction, Gu
It is scheduled on the elastic support with retractility.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822208454.4U CN209400707U (en) | 2018-12-26 | 2018-12-26 | A kind of intelligence radon thorium analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822208454.4U CN209400707U (en) | 2018-12-26 | 2018-12-26 | A kind of intelligence radon thorium analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209400707U true CN209400707U (en) | 2019-09-17 |
Family
ID=67896510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822208454.4U Active CN209400707U (en) | 2018-12-26 | 2018-12-26 | A kind of intelligence radon thorium analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209400707U (en) |
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2018
- 2018-12-26 CN CN201822208454.4U patent/CN209400707U/en active Active
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