CN203177926U - Combined nucleon level monitoring system - Google Patents
Combined nucleon level monitoring system Download PDFInfo
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- CN203177926U CN203177926U CN 201320224262 CN201320224262U CN203177926U CN 203177926 U CN203177926 U CN 203177926U CN 201320224262 CN201320224262 CN 201320224262 CN 201320224262 U CN201320224262 U CN 201320224262U CN 203177926 U CN203177926 U CN 203177926U
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- scintillation detector
- radiation source
- level monitoring
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Abstract
The utility model discloses a combined nucleon level monitoring system, and relates to the technical field of nucleon level detection. The combined nucleon level monitoring system solves the problems of poor combination capability, higher cost and poor measurement accuracy during measurement of the available continuous liquid-level nucleon monitoring instrument. The combined nucleon level monitoring system comprises a host and at least one measuring device, wherein each measuring device comprises a radiation source container and a scintillation detector; the radiation source containers and the scintillation detectors are arranged on the two sides of a measured tank body respectively; rays emitted by ray emitting ports of the radiation source containers penetrate through the measured tank body, and emit towards ray receiving surfaces of the scintillation detectors; and a signal output end of the scintillation detector in each measuring device is connected with a signal input end of the host. The combined nucleon level monitoring system is particularly applicable to continuous level detection in a severe environment, and especially applicable to liquid non-contact continuous level measurement in a wide-range and multi-measuring-point container in toxic, combustible, explosive, high-temperature and high-pressure severe environments.
Description
Technical field
The utility model relates to nuclear detection technique field, thing position.
Background technology
Along with development of science and technology, at present the automaticity of domestic newly-built heavy construction is progressively in line with international standards, advanced person's level measurement instrument demand is heightened, and require also higher to reliability of products, stability, degree of accuracy etc.The market demand is complied with in domestic material level instrument market, according to physics, the chemical characteristic (electromagnetic performance, density, granularity, temperature, water cut, corrosivity etc.) of different applications and tested material; The situation of production technology, environment (as size, shape, material, wall thickness, temperature, electromagnetic interference (EMI) and the input and output material mode of tested container and measure the difference that requires), multiple material level product such as adopt different detection principles to develop to utilize that ray, ultrasound wave, radio frequency admittance, radar, weight, machinery resistance are revolved.Because but ray nucleoid instrument does not have and contacts nondestructive measurement with measured object, be particularly suitable for the level gauging under the severe environmental conditions such as high temperature, high pressure, dust, the huge poison of burn into, therefore the nuclear instrument has irreplaceable status under rugged surroundings.
Utilizing at present the continuous level monitoring instrument of radiation absorption principle both at home and abroad, generally is to adopt three kinds of forms: the form that line source emission, stock detector receive; The form that line source emission, point probe receive; The form that point source emission, stock detector receive, above development product all are to adopt single measurement form.The extended capability that exists in the therefore existing liquid level continuous kernel measuring instrument measuring process is poor, cost is higher, the problem of measurement accuracy difference.
The utility model content
The combination ability that exists in the existing liquid level continuous kernel measuring instrument measuring process is poor, cost is higher, the problem of measurement accuracy difference, has proposed a kind of combined type nucleon thing level monitoring system in order to solve for the utility model.
Combined type nucleon thing level monitoring system of the present utility model comprises main frame and at least one group of measurement mechanism, includes radiation source container and scintillation detector in every group of measurement mechanism; Described radiation source container and described scintillation detector are separately positioned on the both sides of tested tank body, and the ray receiving plane of the tested tank body directive of the poor mistake of the ray scintillation detector that sends of the ray launching port of radiation source container; The signal output part of the scintillation detector in every group of measurement mechanism all is connected with the signal input part of main frame.
Last institute scintillation detector is the continuous coverage scintillation detector, and described radiation source container is the scattered radiation source container
Last institute scintillation detector can also be the one-point measurement scintillation detector, and described radiation source container can also be the fixed point radiation source container.
Radiation source in the described radiation source container adopts sealing caesium-137 beta point source, ray energy 661Kev, intensity 2 * 10
9Bq, 31 years half life period.
Main frame comprises cpu control circuit, display driver circuit and display; A plurality of signal input parts of cpu control circuit connect the signal output part of the scintillation detector in many group measurement mechanisms respectively, the demonstration signal output part of this cpu control circuit connects the signal input part of display driver circuit, and the display drive signals output terminal of this display driver circuit connects the display drive signal input end.
Described main frame can also comprise wireless communication module, and the signal input output end of this wireless communication module connects the wireless communication signals input/output terminal of cpu control circuit.
Described main frame also comprises keyboard circuit, and the signal output part of this keyboard circuit connects the push button signalling input end of cpu control circuit.
The utility model content is in the level gauging process, there is the situation that range changes and alarm set point disperses, adopt the form of combination expansion to design, at different operating modes, range and measurement point can be expanded, take different array configurations more to be conducive to use, make installation, the debugging of instrument and keep in repair convenient in the future, reduce maintenance cost, and reduce the price of instrument significantly, user-friendly and safeguard, for safe handling and the economical operation of all kinds of reactors, container provides a kind of new detection method and means.
Advantage of the present utility model has:
1, utilizes material to the principle of absorption design of ray, adopt ray collimation mode to measure, reduce the scattering error influence; Adopt the contactless continuous measuring mode, under measuring accuracy was not subjected to situation that changes in environmental conditions influences, reliable and stable, maintenance was little; 2, adopting caesium-137 radiation source is emissive source, and this is penetrated the source and has long half time, is convenient to shielding protection when satisfying system requirements; 3, carry out data with the master-slave mode multimicroprocessor and handle, adopt the multidetector combination to install, improve the instrument measurement range and satisfy the multifunctional measuring requirement; Having LED shows and far-end control function; Switching value, analog quantity output and RS485 interface can make things convenient for DCS to be connected, and debugging maintenance is convenient; 4, radiation source container has the adjustable function of emission angle, can satisfy the requirement of different measuring scope.5, signal handle with programming procedure in utilize consecutive mean, relatively measure reduction statistic fluctuation such as rejectings is to the influence of measuring accuracy.
The utility model designs for adaptation nuclear thing position measuring instrument development trend.This device utilizes the nuclear physics measuring principle to be the basis, adopt point source as the signals collecting mode of emissive source, long plastic scintillation detectors and NaI (TI) scintillation detector, utilizing a plurality of microprocessors to carry out data handles and logical operation, satisfy the request for utilization of different measuring range and the form of measurement, large range measuring is had higher precision.The utility model is particularly useful for detecting as the continuous material level under the rugged surroundings, and the many measurement points of wide range that are specially adapted under toxicity, inflammable and explosive, high temperature, the high pressure rugged surroundings require the liquid noncontact continuous material level in the container to measure.
Description of drawings
Fig. 1 is the structural representation of the combined type nucleon thing level monitoring system of one group of measurement mechanism of embodiment two described employings; Fig. 2 is the structural representation of the combined type nucleon thing level monitoring system of two groups of measurement mechanisms of embodiment five described employings; Fig. 3 is the structural representation that adopts the combined type nucleon thing level monitoring system of two groups of different measuring devices.Fig. 4 is the electrical schematic diagram block diagram of combined type nucleon thing level monitoring system described in the utility model.
Embodiment
Embodiment one, the described combined type nucleon of present embodiment thing level monitoring system comprise main frame 1 and at least one group of measurement mechanism, include radiation source container 4 and scintillation detector 3 in every group of measurement mechanism; Described radiation source container 4 and described scintillation detector 3 are separately positioned on the both sides of tested tank body 2, and the ray receiving plane of the tested tank body 2 directive scintillation detectors 3 of the poor mistake of ray that send of the ray launching port of radiation source container 4; The signal output part of the scintillation detector 3 in every group of measurement mechanism all is connected with the signal input part of main frame 1.
The function of described radiation source container 4 is: 1 output ray.2 play protective action, the container outer surface dose rate less than 1000 little logical sequences/hour.3 are convenient to the fixing and installation of radioactive source; Described radiation source container 4 adopts point source as emissive source.
The difference of embodiment two, present embodiment and embodiment one described combined type nucleon thing level monitoring system is that described scintillation detector 3 is the continuous coverage scintillation detector, and described radiation source container 4 is the scattered radiation source container.
Referring to shown in Figure 1, it is the described a kind of combined type nucleon thing level monitoring system of present embodiment, adopt one group of measurement mechanism in this combined type nucleon thing level monitoring system, scintillation detector 3 in this group measurement mechanism is the continuous coverage scintillation detector, and described radiation source container 4 is the scattered radiation source container.
The difference of embodiment three, present embodiment and embodiment two described combined type nucleon thing level monitoring systems is that the ray launching port of described radiation source container 4 is slit-shaped.
The difference of embodiment four, present embodiment and embodiment two described combined type nucleon thing level monitoring systems is that described scintillation detector 3 is long plastic crystal scintillation detector.
The difference of embodiment five, present embodiment and embodiment one described combined type nucleon thing level monitoring system is that described scintillation detector 3 is the one-point measurement scintillation detector, and described radiation source container 4 is the fixed point radiation source container.
Referring to shown in Figure 2, it is the described a kind of combined type nucleon thing level monitoring system of present embodiment, adopt two groups of measurement mechanisms in this combined type nucleon thing level monitoring system, the scintillation detector 3 in every group of measurement mechanism is the one-point measurement scintillation detector, and radiation source container 4 is the fixed point radiation source container.
The difference of embodiment six, present embodiment and embodiment five described combined type nucleon thing level monitoring systems is that described scintillation detector 3 is the NaITI scintillation detector.
The difference of embodiment seven, present embodiment and the described combined type nucleon of embodiment one to six any one embodiment thing level monitoring system is, radiation source in the described radiation source container 4 adopts sealing caesium-137 beta point source, ray energy 661Kev, intensity 2 * 10
9Bq, 31 years half life period.
Embodiment eight, referring to Fig. 4 present embodiment is described.The difference of present embodiment and the described combined type nucleon of embodiment one to seven any one embodiment thing level monitoring system is that main frame 1 comprises cpu control circuit 7, display driver circuit 5 and display 6; A plurality of signal input parts of cpu control circuit 7 connect the signal output part of the scintillation detector 3 in many group measurement mechanisms respectively, the demonstration signal output part of this cpu control circuit 7 connects the signal input part of display driver circuit 5, and the display drive signals output terminal of this display driver circuit 5 connects display 6 driving signal input.
Embodiment nine, referring to Fig. 4 present embodiment is described.The difference of present embodiment and embodiment eight described combined type nucleon thing level monitoring systems is, main frame 1 also comprises wireless communication module 9, and the signal input output end of this wireless communication module 9 connects the wireless communication signals input/output terminal of cpu control circuit 7.
The wireless communication module 9 that present embodiment increases is used for realizing remote data transmission.
Embodiment ten, referring to Fig. 4 present embodiment is described.The difference of present embodiment and embodiment eight described combined type nucleon thing level monitoring systems is that main frame 1 also comprises keyboard circuit 8, and the signal output part of this keyboard circuit 8 connects the push button signalling input end of cpu control circuit 7.
Referring to shown in Figure 3 be a kind of combined type nucleon thing level monitoring system described in the utility model, adopt two groups of measurement mechanisms in this combined type nucleon thing level monitoring system, wherein the scintillation detector in one group of measurement mechanism 3 is the continuous coverage scintillation detector, and described radiation source container 4 is the scattered radiation source container.Scintillation detector 3 in another group measurement mechanism is the one-point measurement scintillation detector, and radiation source container 4 is the fixed point radiation source container.
When practical application, radiation source container 4 and scintillation detector 3 are installed in the both sides of tested tank body by symmetric position, and what make the two is horizontal line continuously, the ray of radiation source emission is incident to tested tank body 2, scintillation detector 3 receives this radiation signal at the opposite side of tested tank body 2, scintillation detector 3 is converted into electric signal with the ray that receives, electric signal passes to the signal processing unit of main frame 1 by transfer wire, show level value at main frame after the signal processing unit processes, and result of calculation is passed to the host computer of master-control room.If the liquid level range of surveying when big, can adopt many group measurement mechanisms to make up expansion and realize, improve and measure range, reduce use cost.
Claims (10)
1. combined type nucleon thing level monitoring system is characterized in that it comprises main frame (1) and at least one group of measurement mechanism, includes radiation source container (4) and scintillation detector (3) in every group of measurement mechanism; Described radiation source container (4) and described scintillation detector (3) are separately positioned on the both sides of tested tank body (2), and the ray that sends of the ray launching port of radiation source container (4) passes the ray receiving plane of tested tank body (2) directive scintillation detector (3); The signal output part of the scintillation detector (3) in every group of measurement mechanism all is connected with the signal input part of main frame (1).
2. combined type nucleon thing level monitoring system according to claim 1 is characterized in that described scintillation detector (3) is the continuous coverage scintillation detector, and described radiation source container (4) is the scattered radiation source container.
3. combined type nucleon thing level monitoring system according to claim 2, the ray launching port that it is characterized in that described radiation source container (4) is slit-shaped.
4. combined type nucleon thing level monitoring system according to claim 2 is characterized in that described scintillation detector (3) is long plastic crystal scintillation detector.
5. combined type nucleon thing level monitoring system according to claim 1 is characterized in that described scintillation detector (3) is the one-point measurement scintillation detector, and described radiation source container (4) is the fixed point radiation source container.
6. combined type nucleon thing level monitoring system according to claim 5 is characterized in that described scintillation detector (3) is NaI (TI) scintillation detector.
7. according to any described combined type nucleon of claim thing level monitoring system in the claim 1 to 6, it is characterized in that the radiation source in the described radiation source container (4) adopts sealing caesium-137 beta point source, ray energy 661Kev, intensity 2 * 10
9Bq, 31 years half life period.
8. combined type nucleon thing level monitoring system according to claim 1 is characterized in that main frame (1) comprises cpu control circuit (7), display driver circuit (5) and display (6); A plurality of signal input parts of cpu control circuit (7) connect the signal output part of the scintillation detector (3) in many group measurement mechanisms respectively, the demonstration signal output part of this cpu control circuit (7) connects the signal input part of display driver circuit (5), and the display drive signals output terminal of this display driver circuit (5) connects display (6) driving signal input.
9. combined type nucleon thing level monitoring system according to claim 1, it is characterized in that described main frame (1) also comprises wireless communication module (9), the signal input output end of this wireless communication module (9) connects the wireless communication signals input/output terminal of cpu control circuit (7).
10. combined type nucleon thing level monitoring system according to claim 1 is characterized in that described main frame (1) also comprises keyboard circuit (8), and the signal output part of this keyboard circuit (8) connects the push button signalling input end of cpu control circuit (7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320224262 CN203177926U (en) | 2013-04-27 | 2013-04-27 | Combined nucleon level monitoring system |
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| CN 201320224262 CN203177926U (en) | 2013-04-27 | 2013-04-27 | Combined nucleon level monitoring system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104792359A (en) * | 2015-04-07 | 2015-07-22 | 大连理工大学 | Magnetic pointer type non-contact temperature, pressure, liquid level measuring transmitter for opening-free nuclear vessel |
| CN107478298A (en) * | 2016-06-08 | 2017-12-15 | 郑州立子加速器科技有限公司 | A kind of gamma-rays monitoring material position equipment for possessing wireless transmission function |
| CN115031807A (en) * | 2022-01-13 | 2022-09-09 | 东华理工大学 | Neutron radiation double-collimation real-time material level measuring system based on nuclear material level meter |
-
2013
- 2013-04-27 CN CN 201320224262 patent/CN203177926U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104792359A (en) * | 2015-04-07 | 2015-07-22 | 大连理工大学 | Magnetic pointer type non-contact temperature, pressure, liquid level measuring transmitter for opening-free nuclear vessel |
| CN104792359B (en) * | 2015-04-07 | 2017-04-12 | 大连理工大学 | Magnetic pointer type non-contact temperature, pressure, liquid level measuring transmitter for opening-free nuclear vessel |
| CN107478298A (en) * | 2016-06-08 | 2017-12-15 | 郑州立子加速器科技有限公司 | A kind of gamma-rays monitoring material position equipment for possessing wireless transmission function |
| CN115031807A (en) * | 2022-01-13 | 2022-09-09 | 东华理工大学 | Neutron radiation double-collimation real-time material level measuring system based on nuclear material level meter |
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| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20140427 |