CN111175807B - Automatic large-scale total gamma analyzer system - Google Patents
Automatic large-scale total gamma analyzer system Download PDFInfo
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- CN111175807B CN111175807B CN202010022822.5A CN202010022822A CN111175807B CN 111175807 B CN111175807 B CN 111175807B CN 202010022822 A CN202010022822 A CN 202010022822A CN 111175807 B CN111175807 B CN 111175807B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/36—Measuring spectral distribution of X-rays or of nuclear radiation spectrometry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
- G01T7/08—Means for conveying samples received
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Abstract
The invention belongs to the technical field of spent fuel post-processing, and particularly relates to an automatic mass total gamma analyzer system which is used for measuring gamma rays of radioactive samples to be tested in a sample distribution table, and comprises an automatic mass total gamma analyzer provided with a pneumatic sample conveying system, wherein the pneumatic sample conveying system is used for conveying the samples to be tested from the sample distribution table to the automatic mass total gamma analyzer; the automatic mass total gamma analyzer is used for obtaining and analyzing the gamma ray spectrum of the sample to be detected, outputting the analysis result of the gamma ray spectrum and controlling the pneumatic sample conveying system to convey the sample. The sample to be measured can be directly measured without pretreatment by using the method; the analysis process is simple, efficient and quick; the sample to be tested can be recycled; the automatic acquisition of sample information, the automatic receiving and dispatching of running rabbit bottles, the automatic measurement of the sample to be measured can be realized, the unattended full-automatic analysis is finally realized, the labor intensity and the received dosage of workers are greatly reduced, and the working efficiency is greatly improved.
Description
Technical Field
The invention belongs to the technical field of spent fuel post-treatment, and particularly relates to an automatic large-scale total gamma analyzer system.
Background
Spent fuel, also known as irradiated nuclear fuel, is spent nuclear fuel subjected to radiation exposure and is typically produced by a nuclear reactor in a nuclear power plant. The spent fuel post-treatment is the most critical link in the later stage of nuclear fuel circulation, and is the most extensive treatment mode for the spent fuel discharged from the nuclear reactor at present. The spent fuel reprocessing plant generally adopts a Purex (PUREX) process, which utilizes the high extraction performance of tributyl phosphate (TBP) on U (VI), Pu (IV) and the easy oxidation and reduction performance of Pu to realize the extraction and mutual separation of U, Pu, and mainly comprises a uranium and plutonium cosurrification cycle, a uranium purification cycle and a plutonium purification cycle. In the whole process, the total gamma measurement is one of the most important analysis items, has the characteristics of multiple analysis points, high analysis frequency and the like, is generally measured by adopting a gamma counting method at present, but the operations such as opening and closing of a measuring bottle, moving and taking of a sample and the like in the measurement are all manual modes, are finished manually, a large amount of manpower and material resources are consumed, the labor intensity of workers is high, the efficiency is low, and the risk that the dose subjected to radiation exceeds the standard also exists.
Disclosure of Invention
The invention discloses a gamma counting analysis method based on early development, aiming at combining a pneumatic sample feeding technology, an automation technology and a total gamma measuring technology to develop an automatic large-quantity total gamma analyzer system, realizing automatic acquisition of sample information, automatic receiving and sending of a measuring bottle and automatic measurement of a sample, finally realizing unattended full-automatic analysis, greatly lightening the labor intensity and the dosage of workers, and greatly improving the working efficiency and the personnel safety.
In order to achieve the above object, the present invention adopts a technical solution of an automatic mass total gamma analyzer system for measuring gamma rays of a radioactive sample to be measured in a sample distribution table, wherein the system comprises an automatic mass total gamma analyzer provided with a pneumatic sample feeding system for transferring the sample to be measured from the sample distribution table to the automatic mass total gamma analyzer; the automatic mass total gamma analyzer is used for acquiring and analyzing the gamma ray spectrum of the sample to be detected, outputting the analysis result of the gamma ray spectrum and controlling the pneumatic sample feeding system to convey the sample.
Further, the automatic mass total gamma analyzer comprises a control and analysis system connected to the detection system; the detection system is used for obtaining the gamma ray spectrum; the control and analysis system is used for analyzing the gamma ray spectrum, outputting the analysis result and controlling the pneumatic sample conveying system to convey the sample to be detected.
Further, the pneumatic sample conveying system is a PTN main station provided with a PTN conveying pipe, and the PTN main station is arranged on the sample distribution table and used for receiving the rabbit running bottle which is sent out by the sample distribution table and is filled with the sample to be detected and conveying the rabbit running bottle back and forth through the PTN conveying pipe under the control of the control and analysis system; the top end of the PTN conveying pipe is arranged on the PTN main station; the tail end of the PTN conveying pipe is provided with a sample measuring base, and the sample measuring base is arranged at a position close to the detection system and used for positioning and sending the rabbit running bottle; the sample measuring base is provided with a sensing device, and the sensing device can sense whether the rabbit running bottle is positioned in the sample measuring base and send a corresponding in-place signal to the control and analysis system; PTN is an english abbreviation for pneumatic sample presentation system.
Further, the PTN conveying pipe conveys through pneumatic conveying mode run the rabbit bottle, induction system is optical fiber sensor.
Further, the detection system comprises a NaI detector, a collimator and a shielding body arranged on the periphery of the NaI detector, and the gamma rays emitted by the sample to be detected in the rabbit running bottle in the sample measuring base enter the NaI detector through the collimator to form the gamma ray spectrum.
Further, the control and analysis system comprises a PLC control system, an industrial personal computer and analysis software; the PLC control system is used for the logic control of the pneumatic sample feeding system, the detection system, the industrial personal computer and analysis software and also comprises the signal interaction with the sample distribution table; the industrial personal computer and the analysis software are connected with the detection system and used for obtaining, processing, calculating and analyzing the gamma ray spectrum to obtain the analysis result, and the industrial personal computer and the analysis software are further connected with the sample information management system and output the analysis result to the sample information management system.
Further, when the rabbit running bottle is transmitted to the sample measuring base from the PTN master station, the sensing device sends out the corresponding in-place signal, and the PLC control system receives the sample information of the sample to be measured in the rabbit running bottle sent by the sample distribution table, the PLC control system can control the detection system, the industrial personal computer and the analysis software to acquire, process, calculate and analyze the gamma ray spectrum of the sample to be measured in the rabbit running bottle, obtain the analysis result, and output the analysis result to the sample information management system; when the rabbit running bottle is positioned in the sample measuring base, the PLC control system can control the pneumatic sample sending system to send the rabbit running bottle in the sample measuring base back to the PTN master station after the industrial personal computer and the analysis software output the analysis result to the sample information management system.
Further, the PLC control system, the industrial personal computer and the analysis software are arranged in the electric control cabinet.
Further, the PLC control system is connected with the sample distribution table through an Ethernet.
Further, the industrial personal computer and the analysis software are connected with the sample information management system through a network cable.
The invention has the beneficial effects that:
1. the automatic large-amount total gamma analyzer system combines a pneumatic sample feeding technology, an automation technology and a gamma counting measurement technology, realizes automatic acquisition of sample information, automatic receiving and sending of a rabbit running bottle (namely a measurement bottle), automatic measurement of a sample to be measured, and finally realizes unattended full-automatic analysis.
2. Auxiliary operation subsystems such as opening/closing the cover of the rabbit running bottle, moving and taking a sample to be detected and the like are omitted.
3. Greatly reducing the labor intensity and the dosage of workers and greatly improving the working efficiency.
4. The sample to be measured can be directly measured without pretreatment.
5. The analysis process is simple, efficient and quick.
6. The sample to be tested can be recycled.
Drawings
FIG. 1 is a schematic diagram of the connection of an automated mass total gamma analyzer system to a sample distribution station according to an embodiment of the present invention;
FIG. 2 is a schematic view of a detection system and sample measurement base and rabbit running bottle according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the connection of an automated mass spectrometer and a sample information management system according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a sample distribution station and pneumatic sample presentation system (designated with sample temporary storage areas) according to an embodiment of the present invention;
the method comprises the following steps: the method comprises the following steps of 1-a sample distribution table, 2-a PTN main station, 3-a PTN conveying pipe, 4-a sample measurement base, 5-an induction device, 6-a rabbit running bottle, 7-an automatic large-scale total gamma analyzer, 8-a NaI detector, 9-a shielding body, 10-a collimator, 11-a PLC control system, 12-an industrial personal computer and analysis software, 13-an electric control cabinet, 14-a network cable, 15-a sample information management system and 16-a sample temporary storage area.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 1, the present invention provides an automatic mass total gamma analyzer system for measuring gamma-rays of a radioactive sample to be measured in a sample distribution table 1, which includes a pneumatic sample feeding system and an automatic mass total gamma analyzer 7. The pneumatic sample transport system is used to transport the sample to be tested from the sample distribution station 1 to the automated bulk total gamma analyzer 7. The automatic mass gamma analyzer 7 is used for obtaining and analyzing the gamma ray spectrum of the sample to be detected, outputting the analysis result of the gamma ray spectrum and controlling the pneumatic sample feeding system to convey the sample to be detected.
The automatic mass total gamma analyzer 7 comprises a detection system and a control and analysis system (connected with each other), wherein the detection system is used for obtaining the gamma ray spectrum of the sample to be detected, the control and analysis system is used for analyzing the gamma ray spectrum and outputting an analysis result, and the control and analysis system is also used for controlling the pneumatic sample feeding system to transmit the sample to be detected.
As shown in fig. 1, the pneumatic sample conveying system comprises a PTN master station 2, a PTN conveying tube 3 and a sample measuring base 4, wherein the PTN master station 2 is arranged on a sample distributing table 1 and used for receiving a rabbit running bottle 6 which is sent out by an automatic mechanical arm on the sample distributing table 1 and is filled with a sample to be measured, and conveying the rabbit running bottle 6 back and forth through the PTN conveying tube 3 under the control of a control and analysis system; the top end of the PTN conveying pipe 3 is arranged on the PTN main station 2, the tail end of the PTN conveying pipe 3 is provided with a sample measuring base 4, and the sample measuring base 4 is arranged at a position close to the detection system and used for positioning and sending the rabbit running bottle 6; the sample measuring base 4 is provided with a sensing device 5, and the sensing device 5 can sense whether the rabbit running bottle 6 is positioned in the sample measuring base 4 or not and send a corresponding in-place signal to the control and analysis system. The PTN transfer tube 3 transfers the rabbit bottle 6 by pneumatic transfer. The sensing device 5 is a fiber optic sensor. PTN is an English abbreviation for Pneumatic Transmission Network (Pneumatic sample transport).
As shown in fig. 2, the detection system comprises a NaI detector 8, a shield 9 and a collimator 10, wherein the shield 9 is arranged at the periphery of the NaI detector 8. Gamma rays emitted by a sample to be detected in a rabbit running bottle 6 in the sample measuring base 4 enter a NaI detector 8 after passing through a collimator 10 to form a gamma ray spectrum. The collimator 10 is used to collimate gamma rays. The shield 9 is used to prevent stray light and stray radiation from entering the NaI detector 8. The collimating aperture of the collimator 10 and the entrance aperture of the NaI detector 8 should be coaxially aligned. Rabbit running bottle 6: the bottle can be used as a rabbit running bottle and a measuring bottle. When the transfer bottle is used as a rabbit running bottle, the transfer of a sample to be detected is realized, and when the transfer bottle is used as a measuring bottle, the sample to be detected is held.
As shown in fig. 2, the control and analysis system includes a PLC control system 11 and an industrial personal computer and analysis software 12; the PLC control system 11 is used for the logical control of the pneumatic sample conveying system, the detection system, the industrial personal computer and the analysis software 12, and also comprises the signal interaction with the sample distribution table 1; the industrial personal computer and analysis software 12 is connected with the detection system and used for obtaining, processing, calculating and analyzing the gamma ray spectrum to obtain an analysis result, and the industrial personal computer and analysis software 12 is also connected with the sample information management system 15 and outputs the analysis result to the sample information management system 15. The PLC control system 11 and the industrial personal computer and the analysis software 12 are arranged in the electric control cabinet 13. The PLC control system 11 is connected to the sample distribution table 1 via an ethernet network.
When the rabbit running bottle 6 is transmitted to the sample measuring base 4 from the PTN main station 2, the sensing device 5 sends a corresponding in-place signal, and the PLC control system 11 receives sample information corresponding to a sample to be measured in the rabbit running bottle 6 sent by the sample distribution table 1, the PLC control system 11 can control the detection system, the industrial personal computer and the analysis software 12 to obtain, process, calculate and analyze the gamma ray spectrum of the sample to be measured in the rabbit running bottle 6, obtain an analysis result, and output the analysis result to the sample information management system 15; when running rabbit bottle 6 and being located sample measurement base 4, PLC control system 11 can control pneumatic sample sending system and convey back to PTN main website 2 with running rabbit bottle 6 in sample measurement base 4 behind industrial computer and analysis software 12 export analysis result to sample information management system 15.
As shown in fig. 3, the automatic mass gamma analyzer 7 is connected to the sample information management system 15 through a network 14, and specifically, the industrial personal computer and the analysis software 12 in the automatic mass gamma analyzer 7 are connected to the sample information management system 15 through the network 14.
Finally, the practical application of the automatic mass total gamma analyzer system provided by the invention is explained:
1. Automated delivery of test samples
In the sample distribution table 1, the rabbit running bottle 6 filled with the sample to be detected is grabbed by the automatic mechanical arm to carry out image recognition. According to the ID code of the sample to be measured, the server is inquired, the sample information of the sample to be measured is known, then the automatic mechanical arm sends the rabbit running bottle 6 to the pneumatic sample sending system, the transmission system is provided with the rabbit running bottle 6 of the sample to be measured, and the sample measuring base 4 in the automatic large-amount total gamma analyzer 7 is automatically sent from the PTN main station 2. Meanwhile, the sample distribution table 1 sends the sample information to the automatic mass gamma analyzers 7 in an Ethernet communication mode.
2. Automatic measurement of a sample to be measured
When the rabbit running bottle 6 filled with the sample to be detected is conveyed into the sample measuring base 4 by the pneumatic sample conveying system, the sensing device 5 (optical fiber sensor) is triggered, and the sensing device 5 sends in-place signals to the automatic mass gamma analyzer 7. When the automatic large-scale total gamma analyzer 7 receives the in-place signal and the sample information of the sample to be measured, the measurement program is automatically started to start measurement, and after the measurement is finished, the analysis result is automatically output to the sample information management system 15 of the server.
3. Automatic return of a sample to be tested
After the analysis result is outputted to the sample information management system 15 of the server, the automatic mass gamma analyzer 7 informs the pneumatic sample feeding system to return the measured rabbit running bottle 6 containing the sample to be tested from the sample measuring base 4 to the sample distribution platform 1 along the original path, and transfer the rabbit running bottle to the sample temporary storage area 16 for temporary storage (as shown in fig. 4).
The device according to the present invention is not limited to the embodiments described in the specific embodiments, and those skilled in the art can derive other embodiments according to the technical solutions of the present invention, and also belong to the technical innovation scope of the present invention.
Claims (7)
1. An automated mass spectrometer system for measuring gamma radiation of a radioactive sample to be tested in a sample distribution station (1), characterized by: the system comprises an automatic mass total gamma analyzer (7) provided with a pneumatic sample conveying system, wherein the pneumatic sample conveying system is used for conveying the sample to be detected from the sample distribution table (1) to the automatic mass total gamma analyzer (7); the automatic mass total gamma analyzer (7) is used for obtaining and analyzing the gamma ray spectrum of the sample to be detected, outputting the analysis result of the gamma ray spectrum and controlling the pneumatic sample conveying system to convey the sample;
the automatic mass total gamma analyzer (7) comprises a control and analysis system connected with a detection system; the detection system is used for obtaining the gamma ray spectrum; the control and analysis system is used for analyzing the gamma ray spectrum, outputting the analysis result and controlling the pneumatic sample conveying system to convey the sample to be detected;
The pneumatic sample conveying system is a PTN main station (2) provided with a PTN conveying pipe (3), the PTN main station (2) is arranged on the sample distribution table (1) and is used for receiving the rabbit running bottles (6) which are sent out by the sample distribution table (1) and are filled with the samples to be detected, and the rabbit running bottles (6) are conveyed back and forth through the PTN conveying pipe (3) under the control of the control and analysis system; the top end of the PTN conveying pipe (3) is arranged on the PTN main station (2); the tail end of the PTN conveying pipe (3) is provided with a sample measuring base (4), and the sample measuring base (4) is arranged at a position close to the detection system and used for positioning and sending the rabbit running bottle (6); the sample measuring base (4) is provided with a sensing device (5), and the sensing device (5) can sense whether the rabbit running bottle (6) is positioned in the sample measuring base (4) and send a corresponding in-place signal to the control and analysis system;
the detection system comprises a NaI detector (8), a collimator (10) and a shielding body (9) arranged on the periphery of the NaI detector (8), and gamma rays emitted by the sample to be detected in the rabbit running bottle (6) in the sample measurement base (4) enter the NaI detector (8) after passing through the collimator (10) to form the gamma ray spectrum;
The rabbit running bottle (6) is used as a rabbit running bottle and a measuring bottle; when the sample is used as a rabbit running bottle, the sample to be detected is transferred; when the sample bottle is used as a measuring bottle, the sample to be measured is contained; the uncovering/closing of the rabbit running bottle (6) and the moving of the sample to be tested are omitted.
2. The automated mass total gamma analyzer system of claim 1, wherein: PTN conveying pipe (3) are through the conveying of pneumatic conveying mode run rabbit bottle (6), induction system (5) are optical fiber sensor.
3. The automated mass total gamma analyzer system of claim 1, wherein: the control and analysis system comprises a PLC control system (11), an industrial personal computer and analysis software (12); the PLC control system (11) is used for the logical control of the pneumatic sample feeding system, the detection system, the industrial personal computer and the analysis software (12), and also comprises the signal interaction with the sample distribution table (1); the industrial personal computer and the analysis software (12) are connected with the detection system and used for obtaining, processing, calculating and analyzing the gamma ray spectrum to obtain the analysis result, and the industrial personal computer and the analysis software (12) are also connected with the sample information management system (15) and output the analysis result to the sample information management system (15).
4. The automated mass total gamma analyzer system of claim 3, wherein: when the rabbit running bottle (6) is transmitted to the sample measuring base (4) from the PTN main station (2), the sensing device (5) sends out a corresponding in-place signal, and the PLC control system (11) receives sample information of the sample to be measured in the rabbit running bottle (6) sent by the sample distribution table (1), the PLC control system (11) can control the detection system and the industrial personal computer and analysis software (12) to acquire, process, calculate and analyze the gamma ray spectrum of the sample to be measured in the rabbit running bottle (6) to obtain the analysis result, and output the analysis result to the sample information management system (15); when running rabbit bottle (6) and being located in sample measurement base (4), PLC control system (11) can be in industrial computer and analysis software (12) will analysis result output to behind sample information management system (15) control pneumatic sample sending system will in sample measurement base (4) run rabbit bottle (6) and convey back to PTN main website (2).
5. The automated mass total gamma analyzer system of claim 3, wherein: the PLC control system (11) and the industrial personal computer and the analysis software (12) are arranged in an electric control cabinet (13).
6. The automated mass total gamma analyzer system of claim 3, wherein: the PLC control system (11) is connected with the sample distribution table (1) through an Ethernet.
7. The automated mass total gamma analyzer system of claim 3, wherein: the industrial personal computer and the analysis software (12) are connected with the sample information management system (15) through a network cable (14).
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| US6512814B2 (en) * | 2001-04-12 | 2003-01-28 | Jordan Valley Applied Radiation | X-ray reflectometer |
| CN103267778B (en) * | 2013-05-08 | 2015-06-17 | 中国原子能科学研究院 | System for concurrently measuring uranium concentration and nitric acid concentration |
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| CN101198886A (en) * | 2005-11-30 | 2008-06-11 | 独立行政法人放射线医学综合研究所 | Radiation measuring device and data processing method |
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