CN104568061A - Multi-probe passive nuclear level meter - Google Patents
Multi-probe passive nuclear level meter Download PDFInfo
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- CN104568061A CN104568061A CN201510017865.3A CN201510017865A CN104568061A CN 104568061 A CN104568061 A CN 104568061A CN 201510017865 A CN201510017865 A CN 201510017865A CN 104568061 A CN104568061 A CN 104568061A
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Abstract
The invention relates to the field level gauges, and discloses a multi-probe passive nuclear level meter. A plurality of radiation measurement probe radiation information collected over the container material, and will collect more radiation information to be sent to the total operation processing , a total arithmetic processor multiple radiation information processing operation in accordance with a specific mathematical model of material into the container material level or material level accurate information and related material level or material level information is sent to the signal output unit, the signal output section the exact material level or material level related information output. The level meter capable of a large container, under rapidly changing conditions and a small container material level timely, stable and reliable measurement; can choose different mathematical models and operating modes according to operating conditions and application requirements; expand the passive use nuclear field level meter; with flexible configuration scene, the range features the flexibility to change; a significant reduction of the large container measuring overall costs, improve operational efficiency measure large containers.
Description
Technical field
The present invention relates to level-sensing device field, particularly the passive nuclear level sensing device of a kind of Multi probe.
Background technology
Passive nuclear level sensing device is a kind of level-sensing device device being specifically designed to the material level measured containing trace-level activity micro substance material of rising in recent years.Because it is contactless and continuous coverage, more and more applied to the level gauging of the materials such as thermal power plant's flyash.It has the many incomparable advantage of other contact-type bin level indicators.At present, passive nuclear level sensing device only has a probe, and processor is all the information only processing an independent probe.In actual use, current passive nuclear level sensing device exposes increasing defect, the defect of the critical piece principles such as special photomultiplier, internal electric source module, the situations such as external power source quality, environment for use are severe have had a strong impact on passive nuclear level sensing device and have measured, and even allow passive nuclear level sensing device really cannot carry out level gauging.Concrete main manifestations is following shortcoming:
1, range is measured little.Passive nuclear level sensing device is in the market due to signals collecting parts, and weak radiation is propagated in atmosphere and easily absorbed by environment, and the range of actual measurement is very little.Current passive nuclear level sensing device for the real significantly measurement range of traditional measurement material within radius 1 meter.During small container material level this kind of for measurement storehouse pump, real significant measurement range is within radius 0.5 meter.For the container that highly high-level space is large, current passive nuclear level sensing device cannot complete the measurement of real gamut.For the container that horizontal space is large, passive nuclear level sensing device also can only measure the material level state in a direction, cannot measure the material level state in other orientation.These all leave larger potential safety hazard to level monitoring.
2, measurements interference factor is many.Passive nuclear level sensing device device is due to the element manipulation such as photomultiplier, power module principle features, ambient background radiation is disturbed, the continuous change of tested material material kind, power supply is difficult to accomplish clean stablizing, and the factors such as temperature variation is large all can cause measurement to occur severe deviations and distortion.
3, data fluctuations is large.Due to passive nuclear level sensing device signal acquisition device self, when passive nuclear level sensing device is measured, larger data wander and data oscillation can be there is, time weak for measured material radiation characteristics, signal to noise ratio (S/N ratio) is low, cannot obtain useful signal, easily produce wrong report.
4, field test difficulty.At present in practice, passive nuclear level sensing device particularly is just difficult to be verified at operating passive nuclear level sensing device, lack the authenticity of effective means to measurement data to verify, be very difficult to verify that whether the passive nucleon level gauging worked is correct
5, material material kind variable effect is large.Due to different materials formation, in material, the radiation characteristics difference of radioactivity material is large, a kind of radiation signal acquisition component, is difficult to the change adapting to expect to plant.When expecting to plant change, there will be serious measuring error, even cannot measure.
6, responsiveness and data stability contradiction exist.During due to actual measurement, passive nuclear level sensing device data wander and concussion are greatly, much external and internal factor all may cause measurement data to produce larger irregular change, for obtaining comparatively authentic data, passive nuclear level sensing device all adopts a large amount of sample datas to calculate, cause the response of passive nuclear level sensing device to actual material level low, delayed more than 10 minutes that even have.Change occasion rapidly for technological process, passive nuclear level sensing device cannot reflect actual material level in time, cannot meet actual process requirement.
With high costs when 7, bulk container being measured, flow process is complicated.If the quantity just by increasing passive nuclear level sensing device, realize the measurement to bulk container, what so increase transmits relevant cable, control system passage, configuration hardware cost very greatly with level-sensing device, even exceedes the level-sensing device cost taken by themselves of interpolation.When terminal picture configuration, data numerous and diverse use having a strong impact on operations staff during procedural difficulties Datong District.Add have the records of distance by the log sequence and flow process of material level complicated, cannot need arbitrarily to add according to scene or the quantity of minimizing level-sensing device.
Summary of the invention
goal of the invention:for problems of the prior art, the invention provides the passive nuclear level sensing device of a kind of Multi probe, measurement range and range can be arranged and increase and decrease as required; Promote the accuracy to bulk container measurement and reliability; Fast response time and data stabilization is reliable is measured to small container; The integrated cost that remarkable reduction is measured bulk container, significantly promotes bulk container and measures operational efficiency.
technical scheme:the invention provides the passive nuclear level sensing device of a kind of Multi probe, comprise total arithmetic processor, signal output component and multiple actinometry probe, each actinometry probe is all connected with total arithmetic processor, and total arithmetic processor is connected with signal output component; Multiple actinometry probes are respectively used to multiple radiation informations of material in collection container, and the multiple radiation informations collected are sent to total arithmetic processor, total arithmetic processor is used for the accurate material level or the material level relevant information that multiple radiation information are become container contents according to specific mathematical model calculation process, and described accurate material level or material level relevant information are sent to signal output component, described signal output component is used for described accurate material level or material level relevant information to export.
The present invention also provides a kind of bin material level measurement system, and comprise total arithmetic processor, signal output component and multiple passive nuclear level sensing device, each passive nuclear level sensing device is all connected with total arithmetic processor, and total arithmetic processor is connected with signal output component; Multiple passive nuclear level sensing device is respectively used to multiple radiation informations of material in collection container, and calculation process is carried out to the radiation information collected, again the information after process is sent to described total arithmetic processor, total arithmetic processor is used for the accurate material level or the material level relevant information that the information after described process are become container contents according to specific mathematical model calculation process, and described accurate material level or material level relevant information are sent to signal output component, described signal output component is used for described accurate material level or material level relevant information to export.
Further, described multiple actinometry probe is all positioned at same container outer wall same orientation place, for gathering the radiation information of same orientation place material in same container.
Further, described multiple actinometry probe lays respectively at same container outer wall differing heights same orientation place, for gathering the radiation information of differing heights same orientation place material in same container.
Further, described multiple actinometry probe lays respectively at same container outer wall sustained height different azimuth place, for gathering the radiation information of sustained height different azimuth place material in same container.
Further, described multiple actinometry probe lays respectively at same container outer wall differing heights different azimuth place, for the radiation information of differing heights different azimuth place material in the same container of comprehensive collection.
Further, described multiple actinometry probe lays respectively at different vessels outer wall, for gathering the radiation information of material in different vessels.
Preferably, a point of arithmetic processor is equipped with in each described actinometry probe, actinometry probe first by the radiation information collected after the calculation process of point arithmetic processor self be provided with, then send to described total arithmetic processor to carry out calculation process the information after process.
Preferably, described multiple actinometry probe is all connected with described total arithmetic processor by wired or wireless mode.
Further, described total arithmetic processor is also for controlling the working power switch of described multiple actinometry probe respectively.
Preferably, described total arithmetic processor is an independently processing apparatus, or the total processing apparatus be made up of multiple processing apparatus, or computing machine.
beneficial effect:compared with prior art, the present invention can to the carrying out of material in bulk container accurately and reliable measurements; Material level under small container and Rapid Variable Design working condition is carried out in time, stablizes, reliable measurements; Different mathematical models, switching working mode can be selected flexibly from application demand according to operating mode; Expand the utilization field of passive nuclear level sensing device; Possess on-the-spot flexible configuration, feature that range changes flexibly; Promote material level oneself fault-detecting ability; The integrated cost that remarkable reduction is measured bulk container, significantly promotes bulk container and measures operational efficiency.
Accompanying drawing explanation
Fig. 1 is the principle of work schematic diagram of the passive nuclear level sensing device of Multi probe in the present invention;
Fig. 2 is the schematic diagram of embodiment 2;
Fig. 3 is the schematic diagram of embodiment 3;
Fig. 4 is the schematic diagram of embodiment 4;
Fig. 5 is the schematic diagram of embodiment 5;
Fig. 6 is the schematic diagram of embodiment 6;
Fig. 7 is the schematic diagram of embodiment 7.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
embodiment 1:
Present embodiments provide for the passive nuclear level sensing device of a kind of Multi probe, as shown in Figure 1, comprise total arithmetic processor, signal output component and multiple actinometry probe, each actinometry probe is all connected by wired or wireless mode with total arithmetic processor, and total arithmetic processor is connected with signal output component.
The radiation information that multiple actinometry probe is respectively used to material specific band in collection container carries out obtaining multiple radiation information, and the multiple radiation informations collected are exported to total arithmetic processor; Radiation information without any process both can be exported to total arithmetic processor by actinometry probe, also can by through oneself inner arrange independently divide the process of computing processor calculating after information after the process that obtains export to total arithmetic processor and treat further process; Namely each actinometry probe can use the parts of same performance index, also can use the parts of different performance index.
Total arithmetic processor be used for multiple radiation information calculation process to become container contents accurate material level or with material level relevant information, or multiple radiation information calculation process is become container contents multiple material level or with material level relevant information, its can be one independently processing apparatus also can be multiple processing apparatus composition a total processing element, also can by the filling apparatus such as computing machine work as; Total arithmetic processor is by an accurate material level or multiple material level or send to signal output component with material level relevant information, by signal output component by described accurate material level or multiple material level or with material level related information transmission to user.
Signal transfer unit can possess multiple output signal type simultaneously, as on-off model, analog signals, digital signal or pulse signal etc.; Multiple output channel can be possessed, simultaneously output switching signal, analog signals, digital signal or pulse signal simultaneously; Both exported by wireline cable, also can be exported by radio channel; Namely can the overall accurate material level of of out-put container or with material level relevant information, also can export respectively the multiple material level generated after total arithmetic processor calculation process or with material level relevant information.
embodiment 2:
As Fig. 2, present embodiment provides one to have the passive nuclear level sensing device (3 and 4 represent total arithmetic processor and signal output component respectively) of two actinometries probe (1 and 2), wherein two actinometries probe (1 and 2) are all positioned at the same orientation place of same container outer 5, for gathering the radiation information of same orientation place material in same container 5.
Concrete measurement and calculating process as follows, measuring sonde 1 measured value is A, and measuring sonde 2 measured value is B; Measuring sonde A unit sample number is 5, and measure responsiveness very high, data fluctuations is large; The unit sample number of measuring sonde B is 300, measures responsiveness low, data stabilization; Suppose that preset value is D, the operation result of total arithmetic processor is E, and the mathematical model of its computing is: when | during A-B|<D, E=B; When | during A-B| >=D, E=A, namely when two probe data gaps are between-D ~ D, total arithmetic processor using measured value B as operation result E, when two probe data gaps are more than or equal to D or are less than or equal to-D, total arithmetic processor using measured value A as operation result E.
It is little that present embodiment is applicable to material radiation characteristics, material level change is fast, technological requirement fast response time, the occasion that reliability requirement is high, total arithmetic processor carries out comprehensive calculation process by the multiple radiation informations gathering multiple actinometry probe simultaneously, obtain fast response time, resolution is high, more accurate, more reliable data, the installation site of each actinometry probe can require according to measuring vessel and actual measurement the measuring position being arranged in best results, quantity can increase as required or reduce, promote the measurement performance of passive nuclear level sensing device.
embodiment 3:
As Fig. 3, present embodiment provides one to have the passive nuclear level sensing device (3 and 4 represent total arithmetic processor and signal output component respectively) of two actinometries probe (1 and 2), wherein two actinometries probe (1 and 2) lay respectively at the same orientation place of same container 5 outer wall differing heights, for gathering the radiation information of differing heights same orientation place material in same container 5.
Concrete measurement and calculating process as follows, measuring sonde 1 measured value is A, and measuring sonde 2 measured value is B; Preset value D, reference value is S, and the operation result of total arithmetic processor is E; As B<D, E=B+S, as B >=D, E=A+D.What the method can eliminate that measurement probe data fluctuation brings influences each other, material level situation in real reflection bulk container.Present embodiment be applicable to container very high time, according to measurement range and the performance of measuring requirement and single actinometry probe, container differing heights being arranged, multiple actinometry is popped one's head in, total arithmetic processor, by the calculation process to these actinometry probe datas, obtains the material information of whole container.The installation site of each actinometry probe can require according to measuring vessel and actual measurement the measuring position being arranged in best results, and quantity can increase as required or reduce.
embodiment 4:
As Fig. 4, present embodiment provides one to have the passive nuclear level sensing device (3 and 4 represent total arithmetic processor and signal output component respectively) of two actinometries probe (1 and 2), wherein two actinometries probe (1 and 2) lay respectively at same container 5 outer wall sustained height different azimuth place, for gathering the radiation information of sustained height different azimuth place material in same container 5.
Concrete measurement and calculating process as follows, measuring sonde 1 measured value is A, and measuring sonde 2 measured value is B; Preset value is D, and the operation result of total arithmetic processor is E; The mathematical model of its computing is: when | during A-B|≤D, E=(A+B)/2; As A-B>D, E=A; As A-B<-D, E=B.This model can distinguish the material situation of sustained height different azimuth, and total arithmetic processor, by the computing to two data, can provide more precisely material level information reliably.
Present embodiment is applicable to container large in horizontal extent, from some measurement of bearing, the radiation information of other orientation material cannot be obtained, the effect monitored during single measurement of bearing is poor, now the different directions of around container installs multiple actinometry probe, and after total arithmetic processor calculation process, passive nuclear level sensing device can be promoted for the ability of container contents level monitoring and reliability.The installation site of each actinometry probe can require according to measuring vessel and actual measurement the measuring position being arranged in best results, and quantity can increase as required or reduce.
embodiment 5:
As Fig. 5, present embodiment provides one to have the passive nuclear level sensing device (3 and 4 represent total arithmetic processor and signal output component respectively) of two actinometries probe (1 and 2), wherein two actinometries probe (1 and 2) lay respectively at same container 5 outer wall differing heights different azimuth place, for the radiation information of differing heights different azimuth place material in the same container 5 of comprehensive collection.
Concrete measurement and calculating process as follows, measuring sonde 1 measured value is A, and measuring sonde 2 measured value is B, probe 1 material level induction coefficient be F1, probe 2 material level induction coefficient be F2; Preset value is D, and reference value is S, and the operation result of total arithmetic processor is E; As B*F2<D, E=B*F2+S, as B*F2 >=D, E=A*F1+D.What the method can eliminate that measurement probe data fluctuation brings influences each other, and utilizes the coefficient to same material level of different azimuth simultaneously, reflection different azimuth to the induction situation of material level, material level situation in real reflection bulk container.
Requiring and the performance of actinometry probe according to measuring, at the different directions of container and differing heights, multiple actinometry being installed and popping one's head in, after total calculation process device calculation process, obtaining comprehensive radiation information and the data of this container contents.The installation site of each actinometry probe can require according to measuring vessel and actual measurement the measuring position being arranged in best results, and quantity can increase as required or reduce.
embodiment 6:
As Fig. 6, present embodiment provides one to have the passive nuclear level sensing device (3 and 4 represent total arithmetic processor and signal output component respectively) of two actinometries probe (1 and 2), wherein two actinometries probe (1 and 2) lay respectively at different vessels (5 and 6) outer wall, for gathering the radiation information of different vessels (5 and 6) interior material.Container 5 and 6 is the equipment of being mutually related, and the material of container 5 can enter in container 6.
Concrete measurement and calculating process as follows, measuring sonde 1 measured value is A, and measuring sonde 2 measured value is B; The unit sample number that measuring sonde A algorithm 1 uses is 5, and the unit sample number of measuring sonde A algorithm 2 is 200, and preset value 1 is D1, and preset value 2 is D2, and D1 < D2; As B < D1, total arithmetic processor is according to the data of algorithm 2 calculation process probe 1; As B>D2, total calculation process arithmetical unit is according to the data of algorithm 1 calculation process probe 1.
The method can allow passive nuclear level sensing device according to the flexible switching working mode of the demand of technological process or computing method, realizes the reliable and stable measurement of container contents and and can respond in time when operating mode changes suddenly, reflection material level real change.
embodiment 7:
Present embodiments provide for a kind of bin material level measurement system, present embodiment is roughly the same with embodiment 1, the key distinction is, is a passive nuclear level sensing device with multiple actinometry probe in embodiment 1, and this multiple actinometry probe is all connected with total arithmetic processor; And be that multiple single passive nuclear level sensing device of popping one's head in all is connected with a total arithmetic processor in present embodiment, as Fig. 7, present embodiment is substantially identical with the effect that embodiment 1 can reach, technical characteristic involved in embodiment 1 also can be applied in the present embodiment, does not repeat herein.
In addition, each the passive nuclear level sensing device in this bin material level measurement system also can be located at same container outer wall same orientation place respectively, for gathering the radiation information of same orientation place material in same container; Be located at same container outer wall differing heights same orientation place, for gathering the radiation information of differing heights same orientation place material in same container; Be located at same container outer wall sustained height different azimuth place, for gathering the radiation information of sustained height different azimuth place material in same container; Be located at same container outer wall differing heights different azimuth place, for the radiation information of differing heights different azimuth place material in the same container of comprehensive collection; Be located at different vessels outer wall, for gathering the radiation information of material in different vessels; Namely be respectively above-mentioned embodiment 2,3,4,5,6 similar, technical characteristic involved in above-mentioned embodiment 2,3,4,5,6 also can be applied in the present embodiment, does not repeat herein.
Above-mentioned embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalent transformations of doing according to Spirit Essence of the present invention or modification, all should be encompassed within protection scope of the present invention.
Claims (11)
1. the passive nuclear level sensing device of Multi probe, is characterized in that, comprises total arithmetic processor, signal output component and multiple actinometry probe, and each actinometry probe is all connected with total arithmetic processor, and total arithmetic processor is connected with signal output component; Multiple actinometry probes are respectively used to multiple radiation informations of material in collection container, and the multiple radiation informations collected are sent to total arithmetic processor, total arithmetic processor is used for the accurate material level or the material level relevant information that multiple radiation information are become container contents according to specific mathematical model calculation process, and described accurate material level or material level relevant information are sent to signal output component, described signal output component is used for described accurate material level or material level relevant information to export.
2. the passive nuclear level sensing device of Multi probe according to claim 1, is characterized in that, described multiple actinometry probe is all positioned at same container outer wall same orientation place, for gathering the radiation information of same orientation place material in same container.
3. the passive nuclear level sensing device of Multi probe according to claim 1, it is characterized in that, described multiple actinometry probe lays respectively at same container outer wall differing heights same orientation place, for gathering the radiation information of differing heights same orientation place material in same container.
4. the passive nuclear level sensing device of Multi probe according to claim 1, it is characterized in that, described multiple actinometry probe lays respectively at same container outer wall sustained height different azimuth place, for gathering the radiation information of sustained height different azimuth place material in same container.
5. the passive nuclear level sensing device of Multi probe according to claim 1, it is characterized in that, described multiple actinometry probe lays respectively at same container outer wall differing heights different azimuth place, for the radiation information of differing heights different azimuth place material in the same container of comprehensive collection.
6. the passive nuclear level sensing device of Multi probe according to claim 1, is characterized in that, described multiple actinometry probe lays respectively at different vessels outer wall, for gathering the radiation information of material in different vessels.
7. according to the passive nuclear level sensing device of the Multi probe in claim 1 ~ 6 described in any one, it is characterized in that, a point of arithmetic processor is equipped with in each described actinometry probe, actinometry probe first by the radiation information collected after the calculation process of point arithmetic processor self be provided with, then send to described total arithmetic processor to carry out calculation process the information after process.
8. according to the passive nuclear level sensing device of the Multi probe in claim 1 ~ 6 described in any one, it is characterized in that, described multiple actinometry probe is all connected with described total Operation Processing Unit by wired or wireless mode.
9. according to the passive nuclear level sensing device of the Multi probe in claim 1 ~ 6 described in any one, it is characterized in that, described total arithmetic processor is also for controlling the working power switch of described multiple actinometry probe respectively.
10. according to the passive nuclear level sensing device of the Multi probe in claim 1 ~ 6 described in any one, it is characterized in that, described total arithmetic processor is an independently processing apparatus, or the total processing apparatus be made up of multiple processing apparatus, or computing machine.
11. 1 kinds of bin material level measurement systems, is characterized in that, comprise total arithmetic processor, signal output component and multiple passive nuclear level sensing device, each passive nuclear level sensing device is all connected with total arithmetic processor, and total arithmetic processor is connected with signal output component; Multiple passive nuclear level sensing device is respectively used to multiple radiation informations of material in collection container, and calculation process is carried out to the radiation information collected, and then the information after process is sent to described total arithmetic processor, total arithmetic processor is used for the accurate material level or the material level relevant information that the information after described process are become container contents according to specific mathematical model calculation process, and described accurate material level or material level relevant information are sent to signal output component, described signal output component is used for described accurate material level or material level relevant information to export.
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| CN107478297A (en) * | 2016-06-08 | 2017-12-15 | 郑州立子加速器科技有限公司 | A kind of Multi probe gamma-ray level indicator |
| CN109974811A (en) * | 2019-04-15 | 2019-07-05 | 上海沃纳机电设备有限公司 | A kind of array radiation level-sensing device and its measurement method |
| CN109974810A (en) * | 2019-04-15 | 2019-07-05 | 上海沃纳机电设备有限公司 | A kind of more fronts radiation level-sensing device and its measurement method |
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