CN106645315A - Micro sugar detection method and micro sugar detection device for condensate water of sugar refineries - Google Patents

Micro sugar detection method and micro sugar detection device for condensate water of sugar refineries Download PDF

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Publication number
CN106645315A
CN106645315A CN201710155453.5A CN201710155453A CN106645315A CN 106645315 A CN106645315 A CN 106645315A CN 201710155453 A CN201710155453 A CN 201710155453A CN 106645315 A CN106645315 A CN 106645315A
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sugar
condensed water
condensate water
micro
sugar content
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CN201710155453.5A
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黄洪全
周少基
李学通
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Guangxi University
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Guangxi University
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/06—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/18—Water
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
    • G06N3/00—Computing arrangements based on biological models
    • G06N3/02—Neural networks

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  • General Engineering & Computer Science (AREA)
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  • Software Systems (AREA)
  • Food Science & Technology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

The invention relates to the field of electronic cane sugar content detection, in particular to a real-time detection method and a real-time detection device for micro sugar in condensate water of sugar refineries. The steam condensate water of evaporation sections of the sugar refineries can be directly supplied to boilers to regenerate steam so as to save energy and reduce sewage discharge, and the precondition is that the sugar content of the condensate water does not exceed a specific quota. According to the characteristics of sugar solutions, electric parameters for directly measuring the condensate water, and the method and the device for calculating the sugar content of the condensate water are provided. The measuring accuracy is high, measurement stability and reliability of the sugar content of the condensate water can be guaranteed when evaporating equipment works normally, timely warning can be also realized in case of equipment failure, and measures are taken to avoid serious loss.

Description

The micro- sugar detection method and device of sugar refinery condensed water
The present patent application is divisional application, and corresponding former innovation and creation are entitled：Sugar refinery condensed water sugar content real-time detection Alarm method and device；The primary bright applying date is on December 13rd, 2013；Primary bright Application No.：201310677332.9.
Technical field
The present invention relates to the cane sugar content detection field of electrical type, specifically refers to micro sugared part inspection in a kind of sugar refinery condensed water The method and device of survey.
Background technology
In sugar production process, the steam for generally evaporating the liquid glucose in evaporation section collects condensation in sugar refinery, is formed The higher condensed water of temperature, and these condensed waters are fed in boiler regenerate steam, to reach energy saving and reduction The purpose of blowdown.Because these condensed waters for recycling come from the liquid glucose of evaporation, with certain sugar, if condensed water Middle sugar concentration exceedes certain limit (for example, more than 50ppm), can cause the fouling and corrosion of boiler plant, affects boiler hot Efficiency, or even cause serious security incident.Therefore accurate strict detection must be carried out to the sugar content of condensed water, it is to avoid sugar High condensed water is divided to enter boiler.
At present, detection of the domestic sugar refinery to condensed water sugar content substantially relies on chemical treatment and artificial colorimetric measurement side Method.Chemical reagent and heating response are added in condensed water, add developer carries out color contrast with colorimetric card, and then determines Sugar content.This method takes long, it is difficult to real-time detection alarming, thus there is the wind that the exceeded condensed water of sugar content enters stove Danger, or, by original qualified condensed water when exceeded water is emitted.Patent of invention CN 101393154A is proposed and is used electrical conductivity The method of detection sugar, by detection condensation containing sugar electrical conductivity of water and temperature, using conductivity value, temperature under different sugar concentrations The corresponding relation formula of angle value measures sugar concentration.The method detection time is short, and sugar that can be in on-line real-time measuremen condensed water contains Amount.But the parameter of the invention measurement is few, and measurement result is easily disturbed by other impurities in condensed water, the limited precision of detection, very To situation of the conductance effect more than the conductance effect of saccharic that impurity occurs, measurement result loses use value.
The content of the invention
The present invention proposes a kind of micro- sugar detection method and device of sugar refinery condensed water according to the characteristic of sugary soln.
Sucrose is dissolved in water, and can change conductance effect, capacity effect and the dielectric loss value of water, direct with measuring electrode Conductance, electric capacity and the dielectric loss of condensed water are measured, temperature-compensating is added, sugar content just can be rapidly and accurately calculated.
A kind of micro- sugar detection device of sugar refinery condensed water, comprising measuring electrode, AC signal generator, current measurement circuit, Tension measuring circuit, temperature measuring circuit, signal processing unit, display and alarm unit, is characterized in that：Signal processing unit point The alternating voltage and alternating current at analysis electrode two ends, calculates equivalent conductance, equivalent capacity and dielectric loss, adds temperature-compensating, Condensed water sugar content is calculated with four-dimensional variable.
Measuring electrode is arranged in condensed water, is to strengthen capacity effect, and measuring electrode can adopt the larger tabular knot of area Structure, the preferably two concentric round tubular electrodes being nested together, can to greatest extent eliminate edge effect.
AC signal generator is using all very stable sinusoidal signal generator of frequency and amplitude.
The process of signal processing unit processes signal is divided into two steps：The first step calculates the electric parameter of condensed water, first uses Fu In leaf transformation calculated complex electric current and complex number voltage, obtain complex admittance, the real part of complex admittance is conductance, and the imaginary part of complex admittance is Electric capacity is represented, the angle cotangent value of complex admittance just represents dielectric loss；Second step is according to electric parameter and temperature computation condensed water Sugar content, concrete grammar has many kinds, can be may also be employed more using the classics traditional algorithm such as linear regression or Taylor series expansion Complicated model algorithm.Experiment shows：With neural network model, the conductance, electric capacity, dielectric loss and condensed water temperature according to measurement Degree, calculates condensed water sugar content, can obtain higher precision.
The amount of calculation of signal processing unit is simultaneously little, can be completed to calculate display in real time and be controlled with common single-chip microcomputer or DSP Task processed..
Direct measurement condensed water characteristic of the present invention, at device fails (such as occurring revealing) event can be in time found Barrier, it is to avoid more serious loss.
The present invention compared with prior art, has the advantage that and beneficial effect
The present invention compared with prior art, has the advantage that：The present invention measures conductance, electric capacity and the medium of condensed water and damages Consumption, calculates condensed water sugar content, than the existing simple method for surveying conductance, there is more measurement dimensions, can more suppress impurity Interference, measurement sensitivity is high, and reliability and stability are more preferable.
Description of the drawings
Fig. 1 is the structural representation of one embodiment of the invention.
Specific embodiment
Fig. 1 is the structural representation of one embodiment of the invention.The present embodiment occurs comprising measuring electrode, sinusoidal signal Device, current measurement circuit, tension measuring circuit, temperature measuring circuit, signal processing single chip, display alarm unit and keyboard. The concentric round tubular metal electrode that electrode is nested together using two, electrode and temperature element are arranged in condensed water.Letter Number processing single chip calculates first the electric parameter (including conductance, electric capacity and dielectric loss) of condensed water with Fourier transformation, so Afterwards condensed water sugar content is calculated with RBF neural network model according to electric parameter and temperature.

Claims (3)

1. the micro- sugar detection device of a kind of sugar refinery condensed water, comprising measuring electrode, AC signal generator, current measurement circuit, electricity Pressure measuring circuit, temperature measuring circuit, signal processing unit, display and alarm unit, is characterized in that：Signal processing unit is analyzed The alternating voltage and alternating current at electrode two ends, calculates equivalent conductance, equivalent capacity and dielectric loss, adds temperature-compensating, uses Four-dimensional variable calculates condensed water sugar content.
2. the micro- sugar detection device of sugar refinery condensed water according to claim 1, is characterized in that：Measuring electrode is two and is enclosed within one The concentric round tubular electrode for rising.
3. the micro- sugar detection device of sugar refinery condensed water according to claim 1 or claim 2, is characterized in that：Use nerve net Network model, the conductance, electric capacity, dielectric loss and condensate temperature according to measurement, calculates condensed water sugar content.
CN201710155453.5A 2013-12-13 2013-12-13 Micro sugar detection method and micro sugar detection device for condensate water of sugar refineries Pending CN106645315A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710155453.5A CN106645315A (en) 2013-12-13 2013-12-13 Micro sugar detection method and micro sugar detection device for condensate water of sugar refineries

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310677332.9A CN104713896B (en) 2013-12-13 2013-12-13 Sugar refinery condensed water sugar content real-time detection alarming method and device
CN201710155453.5A CN106645315A (en) 2013-12-13 2013-12-13 Micro sugar detection method and micro sugar detection device for condensate water of sugar refineries

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Publication number Priority date Publication date Assignee Title
CN113325028B (en) * 2021-06-07 2022-05-24 中国核动力研究设计院 Boiling critical experiment device for unstable flow of natural circulation system and control method

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US4047100A (en) * 1976-04-13 1977-09-06 Simekus, Inc. Meter for measuring syrup ratio in soft drinks and the like
CN101393154A (en) * 2008-10-31 2009-03-25 华南理工大学 Micro sugar detection device and method thereof
CN102460137A (en) * 2009-06-08 2012-05-16 S.E.A.医疗系统公司 Systems and methods for the identification of compounds in medical fluids using admittance spectroscopy

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CN1032033A (en) * 1988-03-07 1989-03-29 轻工业部广州设计院 The degree of supersaturation of measuring absolute pressure and boiling sugar solution temperature, given purity variation curve detects and control
DE29821494U1 (en) * 1998-12-02 1999-03-18 Klaus Fischer Meß- und Regeltechnik GmbH, 32107 Bad Salzuflen Device for measuring the dry matter content in solutions containing sugar
CN101812547A (en) * 2010-01-07 2010-08-25 南宁吉然糖业技术有限公司 Whirlwind type separation juice extracting method and equipment
CN202933607U (en) * 2012-08-31 2013-05-15 保定市万浩机械自动化设备有限公司 Organic waste gas emission monitoring device

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Publication number Priority date Publication date Assignee Title
US4047100A (en) * 1976-04-13 1977-09-06 Simekus, Inc. Meter for measuring syrup ratio in soft drinks and the like
CN101393154A (en) * 2008-10-31 2009-03-25 华南理工大学 Micro sugar detection device and method thereof
CN102460137A (en) * 2009-06-08 2012-05-16 S.E.A.医疗系统公司 Systems and methods for the identification of compounds in medical fluids using admittance spectroscopy

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李业德: "基于介质损耗因数的粮食水分测量方法", 《农业工程学报》 *
高丽丽: "基于边际费希尔分析和神经网络相结合的甜瓜含糖量无损检测研究", 《中国优秀硕士学位论文全文数据库 农业科技辑》 *

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Application publication date: 20170510