CN103267778B - System for concurrently measuring uranium concentration and nitric acid concentration - Google Patents
System for concurrently measuring uranium concentration and nitric acid concentration Download PDFInfo
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- CN103267778B CN103267778B CN201310164996.5A CN201310164996A CN103267778B CN 103267778 B CN103267778 B CN 103267778B CN 201310164996 A CN201310164996 A CN 201310164996A CN 103267778 B CN103267778 B CN 103267778B
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Abstract
The invention belongs to the technical field of analytical chemistry, and discloses a system for concurrently measuring a uranium concentration and a nitric acid concentration during a spent fuel post-treatment process. The system comprises two parts such as a hardware system and a software system, wherein the hardware system comprises a sampling analysis system, an instrumentation system, a data acquisition and control system, an industrial control machine and a peripheral equipment system, the sampling analysis system comprises a U-shaped oscillation tube density meter and a electrode-free conductivity analyzer, analog signals of the measured uranium concentration and the measured nitric acid concentration are read by the instrumentation system, are converted into digital signals through the data acquisition and control system, and are transmitted to the industrial control machine through a data transmission line, and the uranium concentration and the nitric acid concentration in the solution are directly calculated through a UraniumAcid1.0 software. With the system, the uranium concentration and the nitric acid concentration can be rapidly and concurrently measured.
Description
Technical field
The invention belongs to technical field of analytical chemistry, be specifically related to the system simultaneously measuring uranium and concentration of nitric acid in spent fuel reprocessing process process.
Background technology
In spent fuel reprocessing process process, the concentration of uranium and nitric acid is two important process control parameters, and they directly have influence on aftertreatment technology operational effect.To the analysis of uranium and concentration of nitric acid, classic method is the concentration adopting hydrometer method and Wheatstone bridge method to measure uranium and nitric acid respectively, these two kinds of methods are all analyze by entering laboratory after artificial timing sampling, there is the shortcoming that elapsed time is longer, can not grasp material liquid component concentration in time.In addition, hydrometer method measurement mechanism volume used is large, and Wheatstone bridge method electrode is easily poisoning, and these features all make classic method can not be applied to the on-line analysis of uranium and concentration of nitric acid in aftertreatment feed liquid.Therefore, a kind of device that simultaneously can measure uranium and concentration of nitric acid or system need be sought.
Summary of the invention
(1) goal of the invention
For prior art Problems existing, the invention provides a kind of can fast, simultaneously to the system that uranium and concentration of nitric acid are measured.
(2) technical scheme
In order to solve problem existing in prior art, technical scheme of the present invention is as follows:
A kind of system simultaneously measuring uranium and concentration of nitric acid, this system comprises hardware system and software systems two parts, wherein hardware system comprises sampling analytical system, instrument system, Data Acquisition and Conversion System (DACS), industrial computer and peripheral system, key is, wherein sampling analytical system comprises U-shaped vibrating tube densitometer and electrodeless formula conductivity analyzer, the simulating signal of its uranium measured and concentration of nitric acid is read by instrument system and be delivered to industrial computer into after digital signal by data line after Data Acquisition and Conversion System (DACS) is changed, calculate through UraniumAcid1.0 software and directly draw uranium and concentration of nitric acid in solution.
Described sampling analytical system mainly contains peristaltic pump, U-shaped vibrating tube densitometer, conductance measurement pond, electrodeless formula conductivity analyzer, valve, stainless-steel tube form, wherein conductance measurement pond have employed the solution type of flow of " bottom in and top out ", one end that testing sample solution delivers to U-shaped oscillating tube by peristaltic pump after valve enters and carries out conductivity measurement from after the other end flows out by the conductance measurement pond entering electrodeless formula conductivity meter, the density signal of what U-shaped oscillating tube was measured is uranium, the concentration signal of what electrodeless formula conductivity analyzer was measured is nitric acid.
Described instrument system, the function of this system is the simulating signal obtaining density and conductivity.
Described Data Acquisition and Conversion System (DACS) is primarily of data collecting card, relay, power supply, terminal board, Signal-regulated kinase composition, power supply is powered to Signal-regulated kinase, Signal-regulated kinase converts the current analog signal transmitted from instrument system to voltage analog signal, convert thereof into digital signal after the voltage analog signal of the different passage of data collecting card collection carries out assignment conversion, digital signal by data line transfer to industrial computer.
Described software systems mainly adopt UraniumAcid1.0 software, this software comprises data acquisition and data processing section, this software adopts Multithread Data mode, realizes the automatic acquisition of measurement data, can show in real time, preserve data and analyze data variation tendency.
The power supply of described Data Acquisition and Conversion System (DACS) is 24V DC power supply, and data collecting card is USB2801 type.
(3) beneficial effect
Adopt a kind of system simultaneously measuring uranium and concentration of nitric acid provided by the invention, this system adopts U-shaped vibrating tube densitometer to measure the density signal of uranium, and the classic methods such as relative hydrometer method are more simple, measuring speed is fast; Adopt electrodeless formula conductivity meter to measure nitric acid density simultaneously, efficiently avoid electrode poisoning.Especially U-shaped vibrating tube densitometer and electrodeless formula conductivity analyzer are effectively combined, can realize measuring uranium and concentration of nitric acid simultaneously, and establish Data Acquisition and Conversion System (DACS) the simulating signal of measurement instrument system is converted to digital signal, uranium and concentration of nitric acid can be directly read by UraniumAcid1.0 software after in digital signal input computing machine, greatly reduce the workload of operating personnel, decrease suffered dosage.
Accompanying drawing explanation
Fig. 1 is the structural representation of measuring system.
Embodiment
Below in conjunction with specification drawings and specific embodiments, the present invention is further elaborated.
A kind of system simultaneously measuring uranium and concentration of nitric acid, this system comprises hardware system and software systems two parts, wherein hardware system comprises sampling analytical system, instrument system, Data Acquisition and Conversion System (DACS), industrial computer and peripheral system, key is, wherein sampling analytical system comprises U-shaped vibrating tube densitometer and electrodeless formula conductivity analyzer, the simulating signal of its uranium measured and concentration of nitric acid is read by instrument system and be delivered to industrial computer into after digital signal by data line after Data Acquisition and Conversion System (DACS) is changed, calculate through UraniumAcid1.0 software and directly draw uranium and concentration of nitric acid in solution.
Described sampling analytical system mainly contains peristaltic pump, U-shaped vibrating tube densitometer, conductance measurement pond, electrodeless formula conductivity analyzer, valve, stainless-steel tube form, wherein conductance measurement pond have employed the solution type of flow of " bottom in and top out ", one end that testing sample solution delivers to U-shaped oscillating tube by peristaltic pump after valve enters and carries out conductivity measurement from after the other end flows out by the conductance measurement pond entering electrodeless formula conductivity meter, the density signal of what U-shaped oscillating tube was measured is uranium, the concentration signal of what electrodeless formula conductivity analyzer was measured is nitric acid.
Described instrument system, the function of this system is the simulating signal obtaining density and conductivity.
Described Data Acquisition and Conversion System (DACS) is primarily of data collecting card, relay, power supply, terminal board, Signal-regulated kinase composition, power supply is powered to Signal-regulated kinase, Signal-regulated kinase converts the current analog signal transmitted from instrument system to voltage analog signal, convert thereof into digital signal after the voltage analog signal of the different passage of data collecting card collection carries out assignment conversion, digital signal by data line transfer to industrial computer.
Described software systems mainly adopt UraniumAcid1.0 software, this software comprises data acquisition and data processing section, this software adopts Multithread Data mode, realizes the automatic acquisition of measurement data, can show in real time, preserve data and analyze data variation tendency.
Embodiment
The operating process of this system is: entered one end that testing sample delivers to U-shaped oscillating tube by peristaltic pump after valve and carry out conductivity measurement from after the other end flows out by the conductance measurement pond entering electrodeless formula conductivity meter, obtain the current analog signal of uranium and nitric acid in solution by instrument system and export data acquistion and control system to, after current analog signal is converted to digital signal by Data Acquisition and Conversion System (DACS), is transferred to computing machine, is calculated by UraniumAcid1.0 software and preserve or print uranium concentration and concentration of nitric acid.
Prepare 4 normal uranium-nitric acid samples, measure its density, conductivity and temperature, according to measured density, conductivity and temperature, calculate uranium concentration in this sample solution and acid by UraniumAcid1.0 software
Degree, and provide the relative error of measurement result, in table 1.As can be seen from Table 1, with this device Simultaneously test
Uranium and concentration of nitric acid, the relative error of measurement result is all less than 5%, and its accuracy can meet analysis requirement.
The measurement of uranium and concentration of nitric acid in uranium-sour sample simulated by table 1
Claims (4)
1. measure the system of uranium and concentration of nitric acid for one kind simultaneously, this system comprises hardware system and software systems two parts, wherein hardware system comprises sampling analytical system, instrument system, Data Acquisition and Conversion System (DACS), industrial computer and peripheral system, it is characterized in that, wherein sampling analytical system comprises U-shaped vibrating tube densitometer and electrodeless formula conductivity analyzer, the simulating signal of its uranium measured and concentration of nitric acid is read by instrument system and be delivered to industrial computer into after digital signal by data line after Data Acquisition and Conversion System (DACS) is changed, calculate through UraniumAcid1.0 software and directly draw uranium and concentration of nitric acid in solution, described sampling analytical system mainly contains peristaltic pump, U-shaped vibrating tube densitometer, conductance measurement pond, electrodeless formula conductivity analyzer, valve, stainless-steel tube forms, wherein conductance measurement pond have employed the solution type of flow of " bottom in and top out ", one end that testing sample solution delivers to U-shaped oscillating tube by peristaltic pump after valve enters and carries out conductivity measurement from after the other end flows out by the conductance measurement pond entering electrodeless formula conductivity meter, the density signal of what U-shaped vibrating tube densitometer was measured is uranium, the concentration signal of what electrodeless formula conductivity analyzer was measured is nitric acid.
2. a kind of system simultaneously measuring uranium and concentration of nitric acid according to claim 1, it is characterized in that, described Data Acquisition and Conversion System (DACS) is primarily of data collecting card, relay, power supply, terminal board, Signal-regulated kinase composition, power supply is powered to Signal-regulated kinase, Signal-regulated kinase converts the current analog signal transmitted from instrument system to voltage analog signal, convert thereof into digital signal after the voltage analog signal of the different passage of data collecting card collection carries out assignment conversion, digital signal by data line transfer to industrial computer.
3. a kind of system simultaneously measuring uranium and concentration of nitric acid according to claim 1, it is characterized in that, described software systems mainly adopt UraniumAcid1.0 software, this software comprises data acquisition and data processing section, this software adopts Multithread Data mode, realize the automatic acquisition of measurement data, can show in real time, preserve data and data variation tendency is analyzed.
4. a kind of system simultaneously measuring uranium and concentration of nitric acid according to claim 3, it is characterized in that, described power supply is 24V DC power supply, and data collecting card is USB2801 type.
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| CN105241945B (en) * | 2015-09-30 | 2017-10-27 | 中国工程物理研究院材料研究所 | Sensor for detecting uranyl ions, and preparation method and application thereof |
| CN108303306A (en) * | 2017-12-21 | 2018-07-20 | 中核四0四有限公司 | Spentnuclear fuel post-processes high-content uranium, neptunium, the direct method for measuring of plutonium in feed liquid |
| CN110794083A (en) * | 2019-11-11 | 2020-02-14 | 四川北方硝化棉股份有限公司 | Method for analyzing nitrocotton mixed acid components |
| CN111175807B (en) * | 2020-01-09 | 2022-06-28 | 中国原子能科学研究院 | Automatic large-scale total gamma analyzer system |
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| US5002892A (en) * | 1989-08-31 | 1991-03-26 | Cabot Corporation | Gravimetric determination of the iodine number of carbon black |
| CN102147385B (en) * | 2011-02-28 | 2012-12-05 | 天津大学 | Multi-phase flow measuring methods based on single-section impedance long-waist internal cone sensor |
| CN202297609U (en) * | 2011-11-01 | 2012-07-04 | 广西大学 | Open-type intelligent monitoring comprehensive experimental platform for cane sugar boiling process |
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