CN202994774U - Boiler water quality detector based on flow injection analysis and soft measurement technique - Google Patents
Boiler water quality detector based on flow injection analysis and soft measurement technique Download PDFInfo
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- CN202994774U CN202994774U CN 201220684300 CN201220684300U CN202994774U CN 202994774 U CN202994774 U CN 202994774U CN 201220684300 CN201220684300 CN 201220684300 CN 201220684300 U CN201220684300 U CN 201220684300U CN 202994774 U CN202994774 U CN 202994774U
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Abstract
The utility model relates to a boiler water quality detector based on flow injection analysis and a soft measurement technique. A distilling water container, a boiler water sample solution container and a standard acid solution container are mainly adopted to be connected with a first sixteen-way valve through flexible pipes; the first sixteen-way valve is sequentially connected with a peristaltic pump, a second sixteen-way valve, a conductivity electrode, a pH electrode and a chloride ion electrode through flexible pipes; the chloride ion electrode is connected with a waste liquid cup; and a central control system is respectively connected with the sixteen-way valve, the peristaltic pump, the second sixteen-way valve, the conductivity electrode, the pH electrode and the chloride ion electrode. According to the utility model, by collecting signals of the conductivity electrode, the pH electrode and the chloride ion electrode in a flow injection analysis system by the central data processing system, water quality parameters including boiler water conductivity, the pH value, the chloride ion concentration and the like are determined; and the boiler water total alkalinity can be determined quickly and effectively by utilizing the flexible measurement technique according to the voltage value signals obtained through pH electrode measurement.
Description
Technical field
The utility model relates to a kind of water quality detecting device, especially relates to the on-line measurement device of boiler water conductivity, pH value, chlorine ion concentration and boiler water total alkalinity, belongs to the water quality inspection technique field.
Background technology
Boiler provides the necessary heat energy of production run and steam as the most important heat-exchange device of industrial enterprise, and the quality of water in the boiler water-steam system is one of key factor that affects boiler and heat power equipment safety, enterprise energy consumption.In order to guarantee the not situations such as corrosion, fouling and salification of boiler water steam circulation system, boiler water need to pass through strict monitoring water quality, meets national standard to guarantee boiler water quality.The water quality condition of Industrial Boiler has determined the running status of boiler to a great extent, and wherein boiler electrical conductivity of water, pH value, chlorine ion concentration and total alkalinity etc. are all often to need the parameter of detection in the boiler water quality testing process.And in many factors that affects the boiler water quality, wherein suitable boiler water total alkalinity all has great significance to the antiscale of boiler, anticorrosion etc.
Along with the progress of science and technology, some advanced water quality detection equipment also correspondingly are applied to the boiler water quality detection field, such as conductivity meter etc.They have the incomparable advantage of classic method in the boiler water quality context of detection, but a certain the parameter of the mensuration boiler water quality that they all can only be single, and there is no the mensuration that can concentrate other boiler water quality parameter.
Particularly for the context of detection of boiler water total alkalinity, still continue to use the method for traditional manual titration in the overwhelming majority's industrial occasions, i.e. indicator titration method.National sector standard Industrial Boiler water quality specifications GB1576-2008 indicator titration method used uses sulfuric acid as standard solution when measuring the boiler water total alkalinity usually, auxiliary with methyl orange and phenolphthalein indicator, principle according to acid-base neutralization, judge the terminal point of titration by the variation of judgement mixed solution color in titration process, then calculate the total alkalinity of boiler water according to the volume of the standard acid that consumes.These traditional manual titration methods mostly need to constantly pipette the boiler water water sample and carry out quantitative chemical analysis, and these operations are not only loaded down with trivial details time-consuming, and more easily introduce some artificial errors on the links such as judgement of titration end-point.
Therefore designing corresponding boiler water water quality on-line detecting system, not only for the safe operation of boiler and the thermal efficiency of raising boiler, the meaning that is not of the common run is arranged, is also national vast boiler user's common aspiration simultaneously.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned weak point, a kind of boiler water quality pick-up unit based on Flow Injection Analysis and soft-measuring technique is provided, this pick-up unit gathers the signal realization of conductance electrode in Flow Injection Analysis System, pH electrode, chlorine ion electrode to the mensuration of the multiple-quality water parameters such as boiler water conductivity, pH value, chlorine ion concentration by central data processing system, and the voltage value signal that this can obtain according to the pH electrode measurement utilizes soft measurement can realize simultaneously mensuration quickly and efficiently to the boiler water total alkalinity.
The technical scheme that provides according to the utility model, boiler water quality pick-up unit based on Flow Injection Analysis and soft-measuring technique, comprise distilled water container, boiler water sample solution container, the standard acid container, waste liquid cup, the 10 six-way valve, peristaltic pump, the 20 six-way valve, conductance electrode, pH electrode, chlorine ion electrode, described distilled water container, boiler water sample solution container, the standard acid container is connected with the 10 six-way valve by flexible pipe respectively; The 10 six-way valve is connected with peristaltic pump, the 20 six-way valve, conductance electrode, pH electrode, chlorine ion electrode successively by flexible pipe, and described chlorine ion electrode is connected with the waste liquid cup; Described central control system is connected with the 10 six-way valve, peristaltic pump, the 20 six-way valve, conductance electrode, pH electrode and chlorine ion electrode respectively; Described peristaltic pump and the 10 six-way valve are controlled by the central control system of Flow Injection Analysis System; Described the 10 six-way valve, the 20 six-way valve are controlled the angle of its rotation by central control system, central control system draws pH value, chlorine ion concentration and the total alkalinity of boiler water sample solution by the signal that collects.
As further improvement of the utility model, described the 10 six-way valve comprises stator and rotor, and described stator is provided with eight stator upper holes; Described rotor is provided with eight rotor the next holes; Rotor is connected with stator rotation, described eight stator upper holes and eight corresponding connections in the next hole of rotor.
As further improvement of the utility model, the upper hole of eight of upper Kong Zhongdi of wherein said eight stators stator is connected with distilled water container, the upper hole of first stator is connected with boiler water sample solution container, and second stator upper hole is connected with the standard acid container; The next hole of first rotor is connected with peristaltic pump in eight rotor the next holes.
As further improvement of the utility model, described the 20 six-way valve comprises stator and rotor, and described stator is provided with eight stator upper holes; Described rotor is provided with eight rotor the next holes; Rotor is connected with stator rotation, described eight stator upper holes and eight corresponding connections in the next hole of rotor.
As further improvement of the utility model, in wherein said eight stator upper holes, the upper hole of first stator is connected with peristaltic pump, and the 5th stator upper hole is connected with conductance electrode; The next hole of five of the next Kong Yudi of first rotor rotor is connected in eight rotor the next holes, and six of second the next Kong Yudi of rotor rotor the next hole is connected.
As further improvement of the utility model, the boiler water quality parameter of described detection comprises conductivity, pH value, chlorine ion concentration and total alkalinity.
As further improvement of the utility model, described standard acid container Plays acid solution is selected the hydrochloric acid solution of 0.001mol/L.
Compared with the prior art the utility model has the following advantages:
When realizing multiple-quality water parameters such as boiler water conductivity, pH value, chlorions by Flow Injection Analysis System, measures the utility model, detect especially the detection of analysis, boiler water total alkalinity for boiler water quality, utilize the soft-measuring technique realization to the detection fast and effectively of boiler water total alkalinity on the basis of Flow Injection Analysis; Avoided loaded down with trivial details manual titration's process, improved accuracy of detection, the safe operation of boiler and the raising of the thermal efficiency have all been had great significance.
Description of drawings
Fig. 1 is system's connection layout of specific embodiment of the utility model.
Fig. 2 is the stator structure schematic diagram of the 10 six-way valve.
Fig. 3 is the rotor structure schematic diagram of the 10 six-way valve.
Fig. 4 is stator, the rotor assembling structural representation of the 10 six-way valve.
Fig. 5 is the stator structure schematic diagram of the 20 six-way valve.
Fig. 6 is the rotor structure schematic diagram of the 20 six-way valve.
Fig. 7 is stator, the rotor assembling structural representation of the 20 six-way valve.
Fig. 8 is the central control system connection diagram.
Fig. 9 is for measuring the curve of conductivity in the boiler water sample solution.
Figure 10 is for measuring the curve of pH value in the boiler water sample solution.
Figure 11 is for measuring the curve of chlorine ion concentration in the boiler water sample solution.
Figure 12 is for measuring the FIA peak curve of total alkalinity in the boiler water sample solution.
Embodiment
Following the utility model is further described in connection with the embodiment in accompanying drawing:
As Fig. 1～shown in Figure 7, comprise distilled water container 1, boiler water sample solution container 2, standard acid container 3, waste liquid cup 4, the 10 six-way valve 5, peristaltic pump 6, the 20 six-way valve 7, conductance electrode 8, pH electrode 9, chlorine ion electrode 10.Described distilled water container 1, boiler water sample solution container 2, standard acid container 3 are connected with the 10 six-way valve 5 by flexible pipe respectively; The 10 six-way valve 5 is connected with peristaltic pump 6, the 20 six-way valve 7, conductance electrode 8, pH electrode 9, chlorine ion electrode 10 successively by flexible pipe, and described chlorine ion electrode 10 is connected with waste liquid cup 4; Described central control system 11 is connected with the 10 six-way valve 5, peristaltic pump 6, the 20 six-way valve 7, conductance electrode 8, pH electrode 9 and chlorine ion electrode 10 respectively; Described peristaltic pump 6 and the 10 six-way valve 5 are controlled by the central control system 11 of Flow Injection Analysis System; Described the 10 six-way valve 5, the 20 six-way valve 7 are controlled its angle that turns over by central control system 11.Central control system 11 draws pH value, chlorine ion concentration and the total alkalinity of boiler water sample solution by the signal that collects.
1 Inner of distilled water container described in the utility model is equipped with distilled water, described boiler water sample solution container 2 Inner are equipped with the boiler water sample solution, described standard acid container 3 Inner are equipped with standard acid, and described standard acid container 3 Plays acid solutions are selected the hydrochloric acid solution of 0.001mol/L.
As Fig. 2～shown in Figure 4, described the 10 six-way valve 5 comprises stator 5-1 and rotor 5-2, and described stator 5-1 and rotor 5-2 connect by rotating shaft.Described stator 5-1 is provided with 8 stator upper holes, is respectively the first upper hole 5-11 of stator, the second upper hole 5-12 of stator, the 3rd upper hole 5-13 of stator, the 4th upper hole 5-14 of stator, the 5th upper hole 5-15 of stator, the 6th upper hole 5-16 of stator, the 7th upper hole 5-17 of stator, the 8th upper hole 5-18 of stator; Described rotor 5-2 is provided with 8 rotor the next holes, is respectively the next hole 5-21 of the first rotor, the second the next hole 5-22 of rotor, the next hole 5-23 of third trochanter, the next hole 5-24 of fourth trochanter, the 5th the next hole 5-25 of rotor, the 6th the next hole 5-26 of rotor, the 7th the next hole 5-27 of rotor, the 8th the next hole 5-28 of rotor; Rotor 5-2 and stator 5-1 are rotationally connected, and are characterized in: where rotor 5-2 no matter turn to, the hole connections between 8 stator upper holes and corresponding hole, up and down, 8 the next holes of rotor.The upper hole 5-18 of eight stators of the upper Kong Zhongdi of wherein said 8 stators is connected with distilled water container 1, and the upper hole 5-11 of first stator is connected with boiler water sample solution container 2, and second upper hole 5-12 of stator is connected with standard acid container 3; The next hole 5-21 of first rotor is connected with peristaltic pump 6 in 8 rotor the next holes.
As Fig. 5～shown in Figure 7, described the 20 six-way valve 7 comprises stator 7-1 and rotor 7-2, and described stator 7-1 and rotor 7-2 connect by rotating shaft.Described stator is provided with 8 stator upper holes, is respectively the first upper hole 7-11 of stator, the second upper hole 7-12 of stator, the 3rd upper hole 7-13 of stator, the 4th upper hole 7-14 of stator, the 5th upper hole 7-15 of stator, the 6th upper hole 7-16 of stator, the 7th upper hole 7-17 of stator, the 8th upper hole 7-18 of stator; Described rotor 7-2 is provided with 8 rotor the next holes, is respectively the next hole 7-21 of the first rotor, the second the next hole 7-22 of rotor, the next hole 7-23 of third trochanter, the next hole 7-24 of fourth trochanter, the 5th the next hole 7-25 of rotor, the 6th the next hole 7-26 of rotor, the 7th the next hole 7-27 of rotor, the 8th the next hole 7-28 of rotor; Rotor 7-21 and stator 7-11 are rotationally connected, and are characterized in: where rotor 7-2 no matter turn to, 8 stator upper holes and 8 corresponding connections in the next hole of rotor.In wherein said 8 stator upper holes, the upper hole 7-11 of first stator is connected with peristaltic pump 6, and the 5th the upper hole 7-15 of stator is connected with conductance electrode 8; The next hole 7-21 of first rotor is connected with the 5th the next hole 7-25 of rotor in 8 rotor the next holes, and second the next hole 7-22 of rotor is connected with the 6th the next hole 7-26 of rotor.
As shown in Figure 8
,The control signal that the center-control data handling system sends by host computer, data bus, difference control step motor, peristaltic pump, control the 10 six-way valve 5 and the 20 six-way valve 7, by conductance electrode 8, pH electrode 9, chlorine ion electrode 10 respectively signals collecting be sent to serial ports.
Described the 10 six-way valve 5, the 20 six-way valve 7 are moved the automatic switchover of operation valve by Driving Stepping Motor by central control system.The lower computer system of ten six-way valve control system is made of the single-chip minimum system of design, and single-chip minimum system mainly comprises one-chip computer module, stepper motor module, serial communication modular and power module etc.System chooses the propulsion system that four phase five-wire type stepping motors rotate as ten six-way valve rotors, and stepper motor is driven by Single Chip Microcomputer (SCM) system, and single-chip microcomputer adopts the mode of four phase eight beat to come Driving Stepping Motor.Be burned onto single-chip microcomputer control program and mainly comprise stepper motor driver module and serial communication modular.Utilize the Step-by-step Motor Device Driver of C language compilation specifically to comprise motor positive and inverse control, rotational angle control etc.The valve that is used for ten six-way valves due to designed system automaticallyes switch, therefore the angle that designed system turns over is 45 degree at every turn.Utilize the serial communication program of C language compilation to adopt inquiry mode, and regulation serial communication data packet format, specifically comprise data start bit, significance bit, stop bit etc.Program is still reversed according to the data significance bit judgement motor forward that reads, then Driving Stepping Motor action.
As Fig. 9～shown in Figure 12, using method of the present utility model is as follows: at first, start peristaltic pump 6 by central control system 11, and it is 100 rev/mins with its speed setting, the 10 six-way valve 5 is in the 8th stator upper hole under original state, both peristaltic pump 6 drove forwards the speed of distilled water with per minute 11.25ml/min, and this process continues about 1 minute, and fundamental purpose is detergent line.
Secondly, central control system 11 makes the 10 six-way valve 5 turn over clockwise 45 degree, make it be in the 8th stator upper hole, meanwhile the rotating speed with peristaltic pump 6 drops to 40 rev/mins, and namely peristaltic pump 6 drives forwards the speed of boiler water sample solution with 4.5ml/min.Be full of whole pipeline through boiler water sample solution after a while by the pipelines that five of the next Kong Yudi of first rotor of the 20 six-way valve 7 rotor the next hole is connected, when the boiler water sample solution is flowed through conductance electrode 8, the conductivity of conductance electrode 8 meeting rapid test boiler water sample solutions, the signal that the while central data processing system sends by gathering it is through calculating accordingly the conductivity of boiler water sample solution.In like manner, when the boiler water sample solution was flowed through pH electrode 9, chlorine ion electrode 10, central control system drew the pH value of boiler water sample solution by the signal that collects, and chlorine ion concentration.
Then, central control system 11 is controlled the 10 six-way valves 5 and is again turned over clockwise 45 degree, makes it be in second rotor the next hole, and this moment, peristaltic pump pumps concentration was the standard salt acid solution of 0.001mol/L, and the rotating speed of peristaltic pump maintains 40 rev/mins.Simultaneously, central control system 11 is controlled the 20 six-way valves 7 and is turned over equally clockwise 45 degree, and the pipeline in the next hole of six of the next Kong Yudi of second rotor of standard acid by the 20 six-way valve 7 rotor is full of whole pipeline after after a while.Central control system makes the 20 six-way valve 7 turn over counterclockwise 45 degree more afterwards, return to original location status, at this moment, remain in boiler water sample solution in five of the next Kong Yudi of first rotor rotor the next hole pipeline of the 20 six-way valve 7 hybrid reaction with it under the driving of current-carrying hydrochloric acid, when mixed solution is flowed through the pH electrode, the pH electrode can rapid test the magnitude of voltage of mixed solution each point, experimental result shows that the pH electrode records the magnitude of voltage of mixed solution each point with the form at FIA peak.
At last, utilize the utility model to measure its FIA spike shape to the boiler water sample solution of 50 groups of different basicity.The utility model utilizes the foundation of Partial Least Square Support Vector Machine method about the predictive equation of the boiler water total alkalinity of mixed solution magnitude of voltage at first according to magnitude of voltage and the corresponding boiler water total alkalinity thereof of 50 groups of boiler water sample solutions measuring.When the utility model is determined at the boiler water sample solution of unknown total alkalinity, central control system 11 is the magnitude of voltage of the each point by gathering the mixed solution that the pH electrode measurement obtains at first, then calculates the total alkalinity of boiler water sample solution according to what set up in advance about the boiler water total alkalinity equation of mixed solution magnitude of voltage.
Thus, realize the fast and effeciently mensuration to the boiler water quality many kinds of parameters, these parameters comprise conductivity, pH value, chlorine ion concentration and total alkalinity.
Claims (7)
1. boiler water quality pick-up unit based on Flow Injection Analysis and soft-measuring technique, it is characterized in that: comprise distilled water container (1), boiler water sample solution container (2), standard acid container (3), waste liquid cup (4), the 10 six-way valve (5), peristaltic pump (6), the 20 six-way valve (7), conductance electrode (8), pH electrode (9), chlorine ion electrode (10), described distilled water container (1), boiler water sample solution container (2), standard acid container (3) is connected with the 10 six-way valve (5) by flexible pipe respectively; The 10 six-way valve (5) is connected with peristaltic pump (6), the 20 six-way valve (7), conductance electrode (8), pH electrode (9), chlorine ion electrode (10) successively by flexible pipe, and described chlorine ion electrode (10) is connected with waste liquid cup (4); Described central control system (11) is connected with the 10 six-way valve (5), peristaltic pump (6), the 20 six-way valve (7), conductance electrode (8), pH electrode (9) and chlorine ion electrode (10) respectively; Described peristaltic pump (6) and the 10 six-way valve (5) are controlled by the central control system (11) of Flow Injection Analysis System; Described the 10 six-way valve (5), the 20 six-way valve (7) are controlled its rotational angle by central control system (11), and central control system (11) draws pH value, chlorine ion concentration and the total alkalinity of boiler water sample solution by the signal that collects.
2. the boiler water quality pick-up unit based on Flow Injection Analysis and soft-measuring technique as claimed in claim 1, described the 10 six-way valve (5) comprises stator (5-1) and rotor (5-2), described stator (5-1) is provided with eight stator upper holes; Described rotor (5-2) is provided with eight rotor the next holes; Rotor (5-2) and stator (5-1) are rotationally connected, described eight stator upper holes and eight corresponding connections in the next hole of rotor.
3. the boiler water quality pick-up unit based on Flow Injection Analysis and soft-measuring technique as claimed in claim 2, described eight stators, eight upper holes of stator of upper Kong Zhongdi (5-18) are connected with distilled water container (1), the upper hole of first stator (5-11) is connected with boiler water sample solution container (2), and second upper hole of stator (5-12) is connected with standard acid container (3).
4. the boiler water quality pick-up unit based on Flow Injection Analysis and soft-measuring technique as claimed in claim 2, in described eight rotor the next holes, the next hole of first rotor (5-21) is connected with peristaltic pump (6).
5. the boiler water quality pick-up unit based on Flow Injection Analysis and soft-measuring technique as claimed in claim 1, described the 20 six-way valve (7) comprises stator (7-1) and rotor (7-2), described stator (7-1) is provided with eight stator upper holes; Described rotor (7-2) is provided with eight rotor the next holes; Rotor (7-2) and stator (7-1) are rotationally connected, described eight stator upper holes and eight corresponding connections in the next hole of rotor.
6. the boiler water quality pick-up unit based on Flow Injection Analysis and soft-measuring technique as claimed in claim 5, in described eight stator upper holes, the upper hole of first stator (7-11) is connected with peristaltic pump (6), and the 5th the upper hole of stator (7-15) is connected with conductance electrode (8).
7. the boiler water quality pick-up unit based on Flow Injection Analysis and soft-measuring technique as claimed in claim 5, its feature: in described eight rotor the next holes, the next hole of first rotor (7-21) is connected with the 5th the next hole of rotor (7-25), and second the next hole of rotor (7-22) is connected with the 6th the next hole of rotor (7-26).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220684300 CN202994774U (en) | 2012-12-12 | 2012-12-12 | Boiler water quality detector based on flow injection analysis and soft measurement technique |
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| CN 201220684300 CN202994774U (en) | 2012-12-12 | 2012-12-12 | Boiler water quality detector based on flow injection analysis and soft measurement technique |
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| CN202994774U true CN202994774U (en) | 2013-06-12 |
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| CN 201220684300 Expired - Fee Related CN202994774U (en) | 2012-12-12 | 2012-12-12 | Boiler water quality detector based on flow injection analysis and soft measurement technique |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018417A (en) * | 2012-12-12 | 2013-04-03 | 江苏省特种设备安全监督检验研究院 | Boiler water quality detection device based on flow injection analysis and soft-measuring technology |
| CN103438425A (en) * | 2013-08-26 | 2013-12-11 | 重庆瑞宝环保工程有限公司 | Boiler water quality automatic detection and sewerage system |
-
2012
- 2012-12-12 CN CN 201220684300 patent/CN202994774U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018417A (en) * | 2012-12-12 | 2013-04-03 | 江苏省特种设备安全监督检验研究院 | Boiler water quality detection device based on flow injection analysis and soft-measuring technology |
| CN103018417B (en) * | 2012-12-12 | 2016-02-24 | 江苏省特种设备安全监督检验研究院 | Based on the boiler water quality pick-up unit of Flow Injection Analysis and soft-measuring technique |
| CN103438425A (en) * | 2013-08-26 | 2013-12-11 | 重庆瑞宝环保工程有限公司 | Boiler water quality automatic detection and sewerage system |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20211212 |
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| CF01 | Termination of patent right due to non-payment of annual fee |