CN102226755A - On-line analyzer for monitoring silicate concentration or phosphate concentration in water - Google Patents
On-line analyzer for monitoring silicate concentration or phosphate concentration in water Download PDFInfo
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- CN102226755A CN102226755A CN 201110094788 CN201110094788A CN102226755A CN 102226755 A CN102226755 A CN 102226755A CN 201110094788 CN201110094788 CN 201110094788 CN 201110094788 A CN201110094788 A CN 201110094788A CN 102226755 A CN102226755 A CN 102226755A
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Abstract
The invention discloses an on-line analyzer for monitoring silicate concentration or phosphate concentration in water. The analyzer comprises: a fluid path system used for detecting the silicate concentration or the phosphate concentration in water; an image collecting system used for collecting the silicate concentration or the phosphate concentration in a water sample in the fluid path system before and after a reaction, and for transmitting corresponding information to a computer controlling system; and the computer controlling system used for controlling the fluid path system to complete the detecting of the silicate concentration or the phosphate concentration, for controlling the communication between the fluid path system and the image collecting system, and for processing the information transmitted from the image collecting system. Based on computer technologies, calibration parameters and measured data can be inquired and deleted, history curves can be provided, and data from instruments can be observed visually. Based on image processing technologies, measurement precision can be improved, and system errors can be eliminated. With the analyzer provided by the present invention, continuous detection can be achieved in real-time. The analyzer also has advantages of convenient operation, high automation degree, low maintenance workload, and good linearity and reproducibility.
Description
Technical field
The present invention relates to a kind of analysis technical field, relate in particular to the field that the Applied Digital image processing techniques is measured silicate concentration or phosphate concentration aqueous solution mesosilicic acid root concentration or phosphate concentration.
Background technology
At present, water is the medium of boiler of power plant work, and therefore, for the requirement of boiler water quality, can will be directly connected to boiler safely, reliable, stable and operation economically.Yet the temperature of water and vapor pressure rise, when descending, can make the salt that carries in the water separate out in the boiler, cause boiler salification and fouling.Therefore, for salification and the fouling that prevents heat power equipment, the corrosion that slows down heat power equipment, the time between overhauls(TBO) and the life-span of prolongation heat power equipment, guarantee the safe operation of unit, must monitor and handle boiler water, steam.
Great majority adopt the processing mode that adds phosphate both at home and abroad at present, in boiler water, add suitable phosphate, make and keep a certain amount of phosphate radical in the boiler water, can improve the shock-absorbing capacity of boiler water, keep the stove water ph value, can effectively prevent fouling, the corrosion of boiler water-wall tube.Therefore, the phosphate concentration analyser of measuring phosphate content in boiler sample water, the steam is superintended and directed in the Water of Power Plant quality supervision, there is crucial meaning aspects such as equipment anticorrosion, heat exchanger Leak Detection.
For the detection of silicate concentration, general known all is to adopt blue method of silicon molybdenum and chemoluminescence method.The blue method of silicon molybdenum, promptly sample water and ammonium molybdate reaction generate molybdenum yellow, with reductive agent it are reduced into silicon molybdenum orchid, survey its silicate concentration with spectrophotometric method at last, adopt spectrophotometric method, need the collector of radiation source and collection light signal.Chemoluminescence method, i.e. the light of certain wavelength is sent in sample water and plurality of reagents reaction, catches these light with collector, according to the i.e. concentration of silicate as can be known of the light that captures.Yet light source and collector work long hours and can produce photoelectric fatigue, and light signal is easy to be interfered, thereby the light signal strength and the linear relationship between the silicate concentration that cause collecting are not very stable, and its range of linearity is also very narrow, makes measurement result accurate inadequately.
This shows that above-mentioned existing detection water mesosilicic acid root concentration or phosphate concentration obviously still have inconvenience and defective, and demand urgently further being improved in structure and use.In order to solve the problem that detects water mesosilicic acid root concentration or phosphate concentration existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and the structure that common product does not have to be fit to can address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.
Because the defective that above-mentioned existing detection water mesosilicic acid root concentration or phosphate concentration exist, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of founding a kind of in-line analyzer that is used to monitor water mesosilicic acid root concentration or phosphate concentration of new structure, can improve the mode of general existing detection water mesosilicic acid root concentration or phosphate concentration, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.
Summary of the invention
Fundamental purpose of the present invention is, overcome the defective that existing detection water mesosilicic acid root concentration or phosphate concentration exist, and provide a kind of in-line analyzer that is used to monitor water mesosilicic acid root concentration or phosphate concentration of new structure, technical matters to be solved is to make it based on digital image processing techniques, according to the concentration that records silicate or phosphate radical before the reaction of sample water with the color distinction of the captured image in reaction back, measuring accuracy, stability and repeated have been improved, thereby be suitable for practicality more, and have the value on the industry.
The object of the invention to solve the technical problems realizes by the following technical solutions.A kind of in-line analyzer that is used to monitor water mesosilicic acid root concentration or phosphate concentration according to the present invention proposes comprises:
Liquid-way system is used to detect sample water silicate concentration or phosphate concentration;
Image capturing system is used for gathering before the reaction of liquid-way system sample water and reacted silicate concentration or phosphate concentration, and gives computer control system with corresponding information transmission;
Computer control system is used to control that liquid-way system is finished the detection of silicate concentration or phosphate concentration and communicate with described image capturing system and to connect, and image capturing system institute information transmitted is handled.
The aforesaid in-line analyzer that is used to monitor water mesosilicic acid root concentration or phosphate concentration, wherein said liquid-way system comprises level switch, pump and the solenoid valve of run-off and reaction tank and corresponding control run-off and reaction tank, and described reaction tank is connected with a plurality of reagent bottles that reaction reagent is housed.
The aforesaid in-line analyzer that is used to monitor water mesosilicic acid root concentration or phosphate concentration, the wherein said reagent bottle that is used to monitor the in-line analyzer of water mesosilicic acid root concentration is preferably four, and ammonium molybdate, oxalic acid, ferrous sulphate and sulfuric acid are housed respectively in the described reagent bottle.
The aforesaid in-line analyzer that is used to monitor water mesosilicic acid root concentration or phosphate concentration, the wherein said reagent bottle that is used for monitoring the in-line analyzer of water phosphate concentration is preferably two, mixed solution that Mitouer and potassium metabisulfite are housed in the described reagent bottle, another is equipped with the mixed solution of ammonium molybdate, citric acid and sulfuric acid.
The aforesaid in-line analyzer that is used to monitor water mesosilicic acid root concentration or phosphate concentration, wherein said image capturing system comprises the darkroom and is arranged on silica ware in the described darkroom, be provided with a plurality of Halogen lamp LEDs between the bottom of described silica ware and the described darkroom, the top in described darkroom is provided with camera and solution inlet, the bottom in described darkroom is provided with sewage draining exit, described solution inlet is connected with a liquid head piece of described reaction tank by solenoid valve, states the sewage draining exit place and is provided with dredge pump.
The aforesaid in-line analyzer that is used to monitor water mesosilicic acid root concentration or phosphate concentration, wherein said computer control system comprises industrial control computer, described industrial control computer is provided with the insertion mouth of digital quantity input and output integrated circuit board and image pick-up card, and described industrial control computer is connected with level switch, pump and the solenoid valve of control in the liquid-way system by digital quantity input and output integrated circuit board.
By technique scheme, the in-line analyzer that the present invention is used to monitor water mesosilicic acid root concentration or phosphate concentration has following advantage at least:
Based on computer technology, can inquire about and delete calibration parameter and measurement data, history curve is provided simultaneously, can observe instrumented data more intuitively; Based on digital image processing techniques, improved measuring accuracy, eliminated systematic error preferably.But this analyser real-time continuous test, simple operation, the automaticity height, maintenance is minimum, and the linearity, reappearance are all better.
In sum, special construction of the present invention is used to monitor the in-line analyzer of water mesosilicic acid root concentration or phosphate concentration, based on digital image processing techniques, concentration according to record silicate or phosphate radical before the reaction of sample water with the color distinction of the captured image in reaction back has improved measuring accuracy, stability and repeated.It has above-mentioned many advantages and practical value, and in like product, do not see have similar structural design to publish or use and really genus innovation, no matter it structurally or bigger improvement all arranged on the function, have large improvement technically, and produced handy and practical effect, and more existing detection water mesosilicic acid root concentration or phosphate concentration have the multinomial effect of enhancement, thereby be suitable for practicality more, and have the extensive value of industry, really be a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.
The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is the process flow diagram that is used to monitor the in-line analyzer of water mesosilicic acid root concentration or phosphate concentration of the present invention;
Fig. 2 is used to monitor the structural representation of the in-line analyzer of water mesosilicic acid root concentration for the embodiment of the invention 1 is described;
Fig. 3 is used for monitoring the structural representation of the in-line analyzer of water phosphate concentration for the embodiment of the invention 2 is described.
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, the in-line analyzer that is used to monitor water mesosilicic acid root concentration or phosphate concentration to foundation the present invention proposition, its embodiment, structure, feature and effect thereof, describe in detail as after.
As shown in Figure 1, a kind of in-line analyzer that is used to monitor water mesosilicic acid root concentration or phosphate concentration comprises:
Liquid-way system 1, computer control system 2 and image capturing system 3.Liquid-way system 1 is finished flushing, the metering of sample water, quantitative dosing automatically with certain time sequence under the control of computer control system 2, liquid-way system 1 mainly comprises level switch 5, pump and the solenoid valve 6 of run-off and reaction tank and corresponding control run-off and reaction tank.Level switch 5, pump and solenoid valve 6 are arranged on the inside or the side of fluid cell and reaction tank, are connected with computing machine 8 by integrated circuit board 7, have realized On-line Control; Computer control system 2 comprises industrial control computer 8, be provided with the insertion mouth of integrated circuit board 7 and image pick-up card 91, write monitoring software and carry out overall control by 7 pairs of computer control systems of integrated circuit board 2, based on digital image processing techniques, the signal that 8 pairs of image pick-up cards 91 of industrial control computer collect is handled accordingly, set up specific model, obtain the concentration of silicate or phosphate radical according to the aberration of the captured image in before the reaction of sample water and reaction back; Image capturing system 3 is made up of CCD camera 101, image pick-up card 91 and darkroom 111, CCD camera 101 is arranged on 111 inside, darkroom, CCD camera 101 adopts the colour plane array camera of high precision large capacity cache, it is the Real-Time Sampling Card of core that image pick-up card 91 adopts with the TMSC6211 digital processing unit, can obtain more accurate image.
Present embodiment is elaborated to the structure of the in-line analyzer that is used to monitor water mesosilicic acid root concentration, referring to Fig. 2, be provided with level switch 4 in the run-off 12, both sides have overflow vent 13, the calibration solution mouth 17 and the sample mouth of a river 33, calibration solution mouth 17 places are provided with calibration pump 15, calibration solution 14 is connected with run-off 12 by calibration pump 15,33 places, the sample mouth of a river are provided with solenoid valve 16, sample water is connected with run-off 12 by solenoid valve 16, run-off 12 bottoms are connected with reaction tank 21 by analyzing valve 18, reaction tank 21 is provided with four reagent inlets from top to bottom, two overflow vents and sewage draining exit, two liquid head pieces of reaction tank 21 are respectively as the liquid head piece I 19 of reaction tank 21 and the overflow vent II 22 that communicates with darkroom 11, overflow vent II 22 places are provided with solenoid valve 23, liquid-way system is connected with darkroom 11 by solenoid valve 23, be provided with stirrer 24 in the reaction tank 21, stirrer 24 adopts magnetic stirring bar, accelerated reaction velocity and made chromophoric solution more even, the reagent porch is disposed with four reagent pump 26-1,26-2,26-3,26-4, four kinds of reagent bottles are connected with reaction tank 21 by four kinds of corresponding reagent pumps respectively, be respectively ammonium molybdate 25-1 in four kinds of reagent bottles, oxalic acid 25-2, ferrous sulphate 25-3 and sulfuric acid 25-4, correspondence is provided with level switch 32-1 in four kinds of reagent bottles, 32-2,32-3,32-4 can report to the police when reagent volumes is not enough.Be provided with silica ware 28 in the darkroom 11, be provided with 3 Halogen lamp LEDs 29 between the bottom of silica ware 28 and the darkroom 11, the top in darkroom 11 is provided with CCD camera 10 and solution inlet 30, the bottom has sewage draining exit 31, solution inlet 30 is connected with the liquid head piece II 22 of reaction tank 21 by solenoid valve 23, realization response pond 21 communicates with darkroom 11, sewage draining exit 31 places are provided with dredge pump 27, clapped photograph at every turn, dredge pump 27 has been arranged the solution in the silica ware 28 immediately, the light transmission of its silica ware 28 is non-better, Halogen lamp LED 29 adopts the low-power bulb of 3W, taking pictures for camera provides suitable light, shooting process is to carry out in the darkroom 11 that special silica ware 28 and CCD camera 10 and complete lucifuge are installed, before the reaction of sample water, sample water is taken pictures, having clapped photograph drains sample water immediately, behind the certain hour, sample water has reacted and has entered darkroom 11, take pictures once more, image pick-up card 9 is with the signal input computing machine 8 that collects, Applied Digital image processing techniques, computing machine is handled two width of cloth images that collect, and draws the concentration of silicate according to its aberration.
Embodiment 2
Present embodiment is elaborated to the concrete structure of the in-line analyzer that is used for monitoring the water phosphate concentration, referring to Fig. 3, be provided with level switch 4.1 in the run-off 12.1, both sides have overflow vent 13.1, the calibration solution mouth 17.1 and the sample mouth of a river 33.1, calibration solution mouth 17.1 places are provided with calibration pump 15.1, calibration solution 14.1 is connected with run-off 12.1 by calibration pump 15.1,33.1 places, the sample mouth of a river are provided with solenoid valve 16.1, sample water is connected with run-off 12.1 by solenoid valve 16.1, run-off 12.1 bottoms are connected with reaction tank 21.1 by analyzing valve 18.1, reaction tank 21.1 is provided with two reagent inlets from top to bottom, two overflow vents and sewage draining exit, two liquid head pieces of reaction tank 21.1 are respectively as the liquid head piece I 19.1 of reaction tank 21.1 and the overflow vent II 22.1 that communicates with darkroom 11.1, overflow vent II 22.1 places are provided with solenoid valve 23.1, liquid-way system 1 is connected with darkroom 11.1 by solenoid valve 23.1, be provided with stirrer 24.1 in the reaction tank 21.1, stirrer 24.1 adopts magnetic stirring bar, accelerated reaction velocity and made chromophoric solution more even, the reagent porch is disposed with reagent pump 26.1-1,26.1-2, the reagent bottle 25.1-1 of two kinds of different reagent is housed, 25.1-2 be connected with reaction tank 21.1 by reagent pump respectively, mixed solution that Mitouer and potassium metabisulfite are housed in the reagent bottle of two kinds of different reagent, another is equipped with ammonium molybdate, the mixed solution of citric acid and sulfuric acid.
Be respectively arranged with level switch 32.1-1,32.1-2 in two reagent bottles, when reagent volumes is not enough, can report to the police.Be provided with silica ware 28.1 in the darkroom 11.1, be provided with 3 Halogen lamp LEDs 29.1 between the bottom of silica ware 28.1 and the darkroom 11.1, the top in darkroom 11.1 is provided with CCD camera 10.1 and solution inlet 30.1, the bottom has sewage draining exit 31.1, solution inlet 30.1 is connected with the liquid head piece II 22.1 of reaction tank 21.1 by solenoid valve 23.1, realization response pond 21.1 communicates with darkroom 11.1, sewage draining exit 31.1 places are provided with dredge pump 27.1, clapped photograph at every turn, dredge pump 27.1 has been arranged the solution in the silica ware 28.1 immediately, the light transmission of its silica ware 28.1 is non-better, Halogen lamp LED 29.1 adopts the low-power bulb of 3W, taking pictures for camera provides suitable light, shooting process is to carry out in the darkroom 11.1 that special silica ware 28.1 and CCD camera 10.1 and complete lucifuge are installed, before the reaction of sample water, sample water is taken pictures, having clapped photograph drains sample water immediately, behind the certain hour, sample water has reacted and has entered darkroom 11.1, take pictures once more, image pick-up card 9.1 is with the signal input computing machine 8.1 that collects, Applied Digital image processing techniques, two width of cloth images that 8.1 pairs in computing machine collects are handled, and draw the concentration of phosphate radical according to its aberration.
Above-mentioned structure like this constitutes the technological innovation that the present invention is used to monitor the in-line analyzer of water mesosilicic acid root concentration or phosphate concentration, all has many saving graces for technician of the same trade now, and the progressive that possesses skills really.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (6)
1. in-line analyzer that is used to monitor water mesosilicic acid root concentration or phosphate concentration is characterized in that comprising:
Liquid-way system is used to detect sample water mesosilicic acid root concentration or phosphate concentration;
Image capturing system is used for gathering before the reaction of liquid-way system sample water and reacted silicate concentration or phosphate concentration, and gives computer control system with corresponding information transmission;
Computer control system is used to control that liquid-way system is finished the detection of silicate concentration or phosphate concentration and communicate with described image capturing system and to connect, and image capturing system institute information transmitted is handled.
2. the in-line analyzer that is used to monitor water mesosilicic acid root concentration or phosphate concentration according to claim 1, it is characterized in that, described liquid-way system comprises level switch, pump and the solenoid valve of run-off and reaction tank and corresponding control run-off and reaction tank, and described reaction tank is connected with a plurality of reagent bottles that reaction reagent is housed.
3. the in-line analyzer that is used to monitor water mesosilicic acid root concentration or phosphate concentration according to claim 1, it is characterized in that, the described reagent bottle that is used to monitor the in-line analyzer of water mesosilicic acid root concentration is preferably four, and ammonium molybdate, oxalic acid, ferrous sulphate and sulfuric acid are housed respectively in the described reagent bottle.
4. the in-line analyzer that is used to monitor water mesosilicic acid root concentration or phosphate concentration according to claim 1, it is characterized in that, the described reagent bottle that is used for monitoring the in-line analyzer of water phosphate concentration is preferably two, mixed solution that Mitouer and potassium metabisulfite are housed in the described reagent bottle, another is equipped with the mixed solution of ammonium molybdate, citric acid and sulfuric acid.
5. the in-line analyzer that is used to monitor water mesosilicic acid root concentration or phosphate concentration according to claim 1, it is characterized in that, described image capturing system comprises the darkroom and is arranged on silica ware in the described darkroom, be provided with a plurality of Halogen lamp LEDs between the bottom of described silica ware and the described darkroom, the top in described darkroom is provided with camera and solution inlet, the bottom in described darkroom is provided with sewage draining exit, described solution inlet is connected with a liquid head piece of described reaction tank by solenoid valve, states the sewage draining exit place and is provided with dredge pump.
6. the in-line analyzer that is used to monitor water mesosilicic acid root concentration or phosphate concentration according to claim 1 and 2, it is characterized in that, described computer control system comprises industrial control computer, described industrial control computer is provided with the insertion mouth of digital quantity input and output integrated circuit board and image pick-up card, and described industrial control computer is connected with level switch, pump and the solenoid valve of control in the liquid-way system by digital quantity input and output integrated circuit board.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110094788 CN102226755A (en) | 2011-04-15 | 2011-04-15 | On-line analyzer for monitoring silicate concentration or phosphate concentration in water |
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| CN 201110094788 CN102226755A (en) | 2011-04-15 | 2011-04-15 | On-line analyzer for monitoring silicate concentration or phosphate concentration in water |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106841182A (en) * | 2016-12-29 | 2017-06-13 | 核工业北京化工冶金研究院 | Simultaneously and rapidly monitor the on-line computing model and method of silicate and phosphate radical in water |
| CN110057642A (en) * | 2019-05-08 | 2019-07-26 | 国家能源投资集团有限责任公司 | Online silicon table detection composition and preparation method thereof, online silicon table detection method |
| CN110095433A (en) * | 2019-06-17 | 2019-08-06 | 广西师范大学 | A method of silicate is measured with Resonance Rayleigh Scattering Spectra |
| CN110160962A (en) * | 2018-02-16 | 2019-08-23 | 恩德莱斯和豪瑟尔分析仪表两合公司 | Determine the analytical equipment for indicating the measured variable of silicate concentration in sample liquid |
| US11480526B2 (en) | 2020-01-21 | 2022-10-25 | Mettler-Toledo Thornton, Inc. | Instrument for sequential analysis for silica and phosphate in aqueous solution |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841182A (en) * | 2016-12-29 | 2017-06-13 | 核工业北京化工冶金研究院 | Simultaneously and rapidly monitor the on-line computing model and method of silicate and phosphate radical in water |
| CN110160962A (en) * | 2018-02-16 | 2019-08-23 | 恩德莱斯和豪瑟尔分析仪表两合公司 | Determine the analytical equipment for indicating the measured variable of silicate concentration in sample liquid |
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| CN110160962B (en) * | 2018-02-16 | 2022-10-25 | 恩德莱斯和豪瑟尔分析仪表两合公司 | Analysis device for determining a measured variable representing the concentration of silicate in a sample liquid |
| CN110057642A (en) * | 2019-05-08 | 2019-07-26 | 国家能源投资集团有限责任公司 | Online silicon table detection composition and preparation method thereof, online silicon table detection method |
| CN110095433A (en) * | 2019-06-17 | 2019-08-06 | 广西师范大学 | A method of silicate is measured with Resonance Rayleigh Scattering Spectra |
| US11480526B2 (en) | 2020-01-21 | 2022-10-25 | Mettler-Toledo Thornton, Inc. | Instrument for sequential analysis for silica and phosphate in aqueous solution |
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Application publication date: 20111026 |