CN104793002A - Atmospheric automatic monitoring apparatus capable of realizing sampling/calibrating alternative equivalent operation, and method thereof - Google Patents

Atmospheric automatic monitoring apparatus capable of realizing sampling/calibrating alternative equivalent operation, and method thereof Download PDF

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Publication number
CN104793002A
CN104793002A CN201510110689.8A CN201510110689A CN104793002A CN 104793002 A CN104793002 A CN 104793002A CN 201510110689 A CN201510110689 A CN 201510110689A CN 104793002 A CN104793002 A CN 104793002A
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sampling
calibration
gas
passage
gas circuit
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CN201510110689.8A
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CN104793002B (en
Inventor
杨满芽
徐迅宇
何甜辉
汪言满
蔡建楠
区洪辉
蒋争明
利雪儿
刘桂贤
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Environmental Monitoring Station Of Zhongshan City
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Environmental Monitoring Station Of Zhongshan City
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Abstract

The invention relates to an atmospheric automatic monitoring apparatus capable of realizing sampling/calibrating alternative equivalent operation, and a method thereof. An air path center system is arranged, a standard gas introduction mode during apparatus calibration is improved, and a relay connects a dynamic calibrator, a solenoid valve and a sampling pump; when calibration is carried out, the dynamic calibrator is started, and the solenoid valve and the sampling pump are closed through powering off the relay; and when sampling is carried out, the dynamic calibrator is closed, and the solenoid valve and the sampling pump are started through powering on the relay in order to realize the alternative equivalent operation process of calibrating/sampling. An air acquisition system is a sampling head, a standard gas generation system comprises a standard gas tank, a zero gas generator and the dynamic calibrator, the air path center system comprises an air path center channel, an intelligent transition control system comprises the sampling pump, the solenoid valve and the relay, a temperature control device comprises a humiture probe and asensor, a humiture controller and a heat insulation cover, and a pollutant analysis system comprises a plurality of filtering devices and an analyzer.

Description

A kind ofly realize sampling/calibration alternately air automatic monitoring the device and method that runs of equivalence
Technical field
The present invention relates to air automatic monitoring technical field, particularly relate to/calibration alternately air automatic monitoring the device and method that runs of equivalence that a kind ofly realizes sampling.
Background technology
Existing Atmospheric Automatic Monitoring System sampling arranges different gas delivery channels respectively from calibration process.During sampling, air enters sample gas passage, then analyzes by passing into different analytical instrument after filtration unit; During calibration, be respectively tested project (sulphuric dioxide, nitrogen dioxide, carbon monoxide) the respectively configuration calibrating gas tank needing mark-on calibration gas, calibrating gas, respectively by different air delivering pipelines access dynamic calibration instrument, then directly passes into analytical instrument and carries out analytic set.
Although said method can complete sampling and the instrument calibration of Atmospheric Automatic Monitoring System, find to come with some shortcomings part in actual use, routine work is affected.In real work, sampling and calibration are respectively equipped with independent gas passage, for the alignment requirements of satisfied different analytical instrument, be respectively three kinds of gases configuration standard gas tank and operation valve respectively, to stop when instrument calibration gathering extraneous air simultaneously, resampling again after calibration process completes, different gas channels can cause calibrating gas different with the physical state index of sampled air, result is made to there is probabilistic systematic error, operate also very inconvenient in real work simultaneously, consume more human and material resources and financial resources, economical not.
Summary of the invention
Given this, in order to overcome above-mentioned the deficiencies in the prior art, the invention provides/calibration alternately air automatic monitoring the device and method that runs of equivalence that a kind ofly realizes sampling, it passes into mode by calibrating gas during improvement instrument calibration, and connect dynamic calibration instrument by relay, solenoid valve and sampling pump, dynamic calibration instrument is opened during calibration, shut electromagnetic valve and sampling pump is come by relay power-off, dynamic calibration instrument is closed during sampling, opens solenoid valve and sampling pump is come by relay power, realize the alternately equivalent operational process of calibration/sampling, effectively to solve the above-mentioned defect that in real work, existing Atmospheric Automatic Monitoring System exists.
The present invention by the following technical solutions.
Realize/calibration alternately equivalent air automatic monitoring the device run of sampling, comprise the air hose 4 of air acquisition system, calibrating gas generation systems, gas circuit cental system, intelligent conversion control system, attemperating unit, pollutant analysis system and connecting components, it is characterized in that, described air acquisition system comprises sampling head 1, roof 2, described calibrating gas generation systems comprises calibrating gas tank 6, Zero gas generator 7, dynamic calibration instrument 5, described gas circuit cental system comprises gas circuit maincenter passage 9, described intelligent conversion control system comprises sampling pump 14, solenoid valve 15, relay 16, described attemperating unit comprises humiture probe and sensor 3, temperature controller 10, muff 8, and described pollutant analysis system comprises some output branch roads 11, filtration unit 12 and analytical instrument 13, described sampling head 1 is connected with the top of gas circuit maincenter passage 9 and this sampling head 1 is arranged on roof 2, described standard mixture tank 6, dynamic calibration instrument 5, Zero gas generator 7, gas circuit maincenter passage 9, output branch road 11, filtration unit 12, analytical instrument 13 are connected by air hose 4 successively, described gas circuit maincenter passage 9, solenoid valve 15 are connected by air hose 4 successively with sampling pump 14, described relay 16 is connected with described dynamic calibration instrument 5, solenoid valve 15 and sampling pump 14 simultaneously, described humiture probe and sensor 3, temperature controller 10 are connected successively with muff 8, the gas outlet of described standard mixture tank 6 is connected to the calibrating gas input port of described dynamic calibration instrument 5, described Zero gas generator 7 gas outlet is connected to zero gas input port of described dynamic calibration instrument 5, the output port of described dynamic calibration instrument 5 is connected to the calibrating gas input port of described gas circuit maincenter passage 9, the calibrating gas input port of described gas circuit maincenter passage 9 is positioned at gas circuit maincenter passage 9 upper end and tries one's best near roof 2, described gas circuit maincenter passage 9 lower end is connected to described sampling pump 14 by solenoid valve 15, described gas circuit maincenter passage 9 is also provided with multiple output branch road 11, the output port of described output branch road 11 connects filtration unit 12 respectively, described filtration unit 12 connects corresponding analytical instrument 13 input port respectively, described humiture probe and sensor 3 are positioned at described gas circuit maincenter passage 9 upper end and try one's best near roof 2, described muff 8 comprises nexine ribbon heater and outer heat-insulation layer, nexine ribbon heater is connected with described temperature controller 10, and be coated on and export outside branch road 11 and dynamic calibration instrument 5 and the connecting line of gas circuit maincenter passage 9, outer heat-insulation layer is coated on outside nexine ribbon heater.
Described relay 16 is for controlling the switch of sampling pump 14 and solenoid valve 15.
Described gas circuit maincenter passage 9 and air hose 4, filtration unit 6 and filter membrane material are not with monitored pollutant generation chemical reaction and do not discharge the material having interfering material, for teflon, gas circuit maincenter passage 9 internal diameter is 15.0mm, air hose 4 internal diameter is 13.0mm, membrane filtration aperture is 47nm.
Described solenoid valve 12 is opening when sampling, and is closed condition when calibrating.
The flow of described sampling pump 14 is 9.0ml/min, is opening when sampling, and is closed condition when calibrating.
Described standard mixture tank 6 is closed condition when sampling, and is opening when calibrating.
Muff 8 comprises nexine ribbon heater and outer heat-insulation layer, and interior layer material is glass fibre, and cladding material is the one in foam, sponge, leather.
It is 40 DEG C that described temperature controller 10 arranges constant temperature.
A kind of method adopting above-mentioned the realized sampling described in any one/calibration air automatic monitoring device that alternately equivalence runs to carry out atmospheric surveillance and calibration, it is characterized in that, during by arranging gas circuit cental system and improving instrument calibration, calibrating gas passes into mode, and connect dynamic calibration instrument by relay, solenoid valve and sampling pump, realize the alternately equivalent operational process of calibration/sampling: during calibration, open calibrating gas tank, Zero gas generator and dynamic calibration instrument, dynamic calibration instrument working signal is passed to relay, relay auto-breaking is made to carry out Controlling solenoid valve and sampling pump quits work, then stop gathering air, under analytical instrument carries air extractor power, enter analytical instrument after standard mixture input gas circuit maincenter passage to carry out analyzing and exporting data, during sampling, standard of closure gas tank, Zero gas generator and dynamic calibration instrument, the non-working signal of dynamic calibration instrument is passed to relay, relay is energized to Controlling solenoid valve and sampling pump unlatching work automatically, then stop calibration starting to gather air, under analytical instrument carries air extractor power, enter analytical instrument after air enters gas circuit maincenter passage and carry out analyzing and exporting data.
Compared with prior art, of the present invention have following beneficial effect.
(1) adopt mixing mark-on mode, reduce the use amount of calibrating gas tank and solenoid valve, time saving and energy saving in operation, save material benefit economically.
(2) by arranging gas circuit maincenter passage, calibrating gas and sampled air are entered before analytical instrument through identical physical change process (being incubated and filtration unit), thus the systematic error that when overcoming the calibration of mark-on in existing Atmospheric Automatic Monitoring System, calibrating gas is inconsistent caused with actual samples gas channels, the effectively degree of accuracy of raising data.
(3) intelligent control system is increased, dynamic calibration instrument, solenoid valve and sampling pump is connected by relay, realize the automatic conversion of calibration/sampling process, dynamic calibration instrument is opened during calibration, shut electromagnetic valve and sampling pump is come by relay power-off, close dynamic calibration instrument during sampling, come opens solenoid valve and sampling pump by relay power state, easy and simple to handle.
(4) by calibration analyte process, can realize detecting and judging the leakproofness of gas circuit and the transparent performance of filter membrane, effectively avoid gas leakage and filter membrane to block the data distortion caused.
(5) set temperature, humidity sensor and probe, dynamic monitoring also transmits the temperature of gas, humidity to temperature control system, achieve the real-time dynamic heat to gas, effective minimizing air themperature, humidity change the water vapor condensation phenomenon that may cause, improve the accuracy of gas temperature parameter simultaneously, decrease systematic error, improve the accuracy of measurement result.
(6) by removing volume control device and additional filtration unit thereof and residual gas discharge-channel, the flow of conservative control sampling pump, the stable of gas flow in gas circuit maincenter passage is maintained, realize sampling pump no-load running sampling, simplification device, easy to operate, economy.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural drawing of muff.
NO calibration curve when Fig. 3 is nitrogen-oxide analyzer, calibration, its slope M=0.9906, intercept B=1.1659, coefficient R=0.9999.
NO when Fig. 4 is nitrogen-oxide analyzer, calibration xcalibration curve, its slope M=0.9935, intercept B=1.6056, coefficient R=0.9999.
SO when Fig. 5 is flue gas analyser calibration 2calibration curve, its slope M=0.9930, intercept B=2.0619, coefficient R=0.9999.
CO calibration curve when Fig. 6 is the calibration of carbon monoxide instrument, its slope M=0.9948, intercept B=0.0348, coefficient R=0.9999.
In figure: 1, sampling head, 2, roof, 3, humiture probe and sensor, 4, air hose, 5, dynamic calibration instrument, 6, calibrating gas tank, 7, Zero gas generator, 8, muff, 9, gas circuit maincenter passage, 10, temperature controller, 11, branch road is exported, 12, filtration unit, 13, analytical instrument, 14, sampling pump, 15, solenoid valve, 16, relay, 17, ribbon heater joint, 18, nexine ribbon heater, 19, outer heat-insulation layer.
Embodiment
Below in conjunction with the drawings and the specific embodiments, the invention will be further described.
As shown in Figure 1, realize/calibration alternately equivalent air automatic monitoring the device run of sampling, comprise the air hose 4 of air acquisition system, calibrating gas generation systems, gas circuit cental system, intelligent conversion control system, attemperating unit, pollutant analysis system and connecting components, it is characterized in that, described air acquisition system comprises sampling head 1, roof 2, described calibrating gas generation systems comprises calibrating gas tank 6, Zero gas generator 7, dynamic calibration instrument 5, described gas circuit cental system comprises gas circuit maincenter passage 9, described intelligent conversion control system comprises sampling pump 14, solenoid valve 15, relay 16, described attemperating unit comprises humiture probe and sensor 3, temperature controller 10, muff 8, and described pollutant analysis system comprises some output branch roads 11, filtration unit 12 and analytical instrument 13, described sampling head 1 is connected with the top of gas circuit maincenter passage 9 and this sampling head 1 is arranged on roof 2, described standard mixture tank 6, dynamic calibration instrument 5, Zero gas generator 7, gas circuit maincenter passage 9, output branch road 11, filtration unit 12, analytical instrument 13 are connected by air hose 4 successively, described gas circuit maincenter passage 9, solenoid valve 15 are connected by air hose 4 successively with sampling pump 14, described relay 16 is connected with described dynamic calibration instrument 5, solenoid valve 15 and sampling pump 14 simultaneously, described humiture probe and sensor 3, temperature controller 10 are connected successively with muff 8, the gas outlet of described standard mixture tank 6 is connected to the calibrating gas input port of described dynamic calibration instrument 5, described Zero gas generator 7 gas outlet is connected to zero gas input port of described dynamic calibration instrument 5, the output port of described dynamic calibration instrument 5 is connected to the calibrating gas input port of described gas circuit maincenter passage 9, the calibrating gas input port of described gas circuit maincenter passage 9 is positioned at gas circuit maincenter passage 9 upper end and tries one's best near roof 2, described gas circuit maincenter passage 9 lower end is connected to described sampling pump 14 by solenoid valve 15, described gas circuit maincenter passage 9 is also provided with multiple output branch road 11, the output port of described output branch road 11 connects filtration unit 12 respectively, described filtration unit 12 connects corresponding analytical instrument 13 input port respectively, described humiture probe and sensor 3 are positioned at described gas circuit maincenter passage 9 upper end and try one's best near roof 2, described muff 8 comprises nexine ribbon heater and outer heat-insulation layer, nexine ribbon heater is connected with described temperature controller 10, and be coated on and export outside branch road 11 and dynamic calibration instrument 5 and the connecting line of gas circuit maincenter passage 9, outer heat-insulation layer is coated on outside nexine ribbon heater.
Described relay 16 is for controlling the switch of sampling pump 14 and solenoid valve 15.
Described gas circuit maincenter passage 9 and air hose 4, filtration unit 6 and filter membrane material are not with monitored pollutant generation chemical reaction and do not discharge the material having interfering material, for teflon, gas circuit maincenter passage 9 internal diameter is 15.0mm, air hose 4 internal diameter is 13.0mm, membrane filtration aperture is 47nm.
Described solenoid valve 12 is opening when sampling, and is closed condition when calibrating.
The flow of described sampling pump 14 is 9.0ml/min, is opening when sampling, and is closed condition when calibrating.
Described standard mixture tank 6 is closed condition when sampling, and is opening when calibrating.
Muff 8 comprises nexine ribbon heater and outer heat-insulation layer, and interior layer material is glass fibre, and cladding material is the one in foam, sponge, leather.
It is 40 DEG C that described temperature controller 10 arranges constant temperature.
This kind can realize sampling/the calibration air automatic monitoring device and method that alternately equivalence runs realize air automatic monitoring sampling and instrument calibration process automatically alternately equivalence run.
Case study on implementation 1.
During instrument calibration, open standard mixture tank 6 and dynamic calibration instrument 5, the working signal of dynamic calibration instrument 5 is passed to relay 16 and makes this relay power-off, the solenoid valve 15 of gas circuit maincenter passage 9 end and sampling pump 14 also power-off simultaneously stop collection air to enter gas circuit maincenter passage 9, calibrating gas and air pass into after dynamic calibration instrument 5 carries out proportioning mixing by a certain percentage and pass into gas circuit maincenter passage 9, standard mixture to be full of rapidly after gas circuit maincenter passage 9 under the built-in air extractor effect of analytical instrument 13, via output branch road 11 after filtration device 12 enter in analytical instrument 13 and analyze, and according to curve linear related coefficient precision, instrument is calibrated, can judge whether gas channels leaks gas and block accordingly simultaneously.
1, nitrogen-oxide analyzer, calibration obtains valid data
Steel cylinder (osmos tube) concentration Steel cylinder/osmos tube numbering Valid period
NO:67PPM 8Q03004 2014.11.29
Curve is shown in accompanying drawing 3, accompanying drawing 4
The average conversion efficiency that molybdenum changes stove is greater than 96% into 99.38%, and conversion effect is good.
2, sulphuric dioxide calibration obtains valid data
Steel cylinder (osmos tube) concentration Steel cylinder/osmos tube numbering Valid period
SO 2:73PPM 8Q03004 2014.11.29
Curve is shown in accompanying drawing 5.
3, carbon monoxide calibration obtains valid data
Steel cylinder (osmos tube) concentration Steel cylinder/osmos tube numbering Valid period
CO:2820PPM 8Q03004 2014.11.29
Curve is shown in accompanying drawing 6.
Case study on implementation 2.
During sampling, close dynamic calibration instrument 5, the power-off signal of dynamic calibration instrument 5 is passed to relay 16 and makes this relay power, solenoid valve 15 and the sampling pump 14 of gas circuit maincenter passage 9 end are also energized in running order simultaneously, under the dynamic action of sampling pump 14, air enters gas circuit maincenter passage 9 by the sampling head 5 being arranged on outside, roof 2, under the effect of the air extractor established in analytical instrument 13, air is analyzed via entering in analytical instrument 13 after output branch road 11 after filtration device 12 filtration removal particle wherein, and export real-time analysis data.
This device is sampled after a period of time, and analytical instrument 13 needs again to calibrate, and repeats above-mentioned instruments calibration steps.

Claims (9)

1. can realize/calibration alternately equivalent air automatic monitoring the device run of sampling, comprise the air hose (4) of air acquisition system, calibrating gas generation systems, gas circuit cental system, intelligent conversion control system, attemperating unit, pollutant analysis system and connecting components, it is characterized in that, described air acquisition system comprises sampling head (1), roof (2), described calibrating gas generation systems comprises calibrating gas tank (6), Zero gas generator (7), dynamic calibration instrument (5), described gas circuit cental system comprises gas circuit maincenter passage (9), described intelligent conversion control system comprises sampling pump (14), solenoid valve (15), relay (16), described attemperating unit comprises humiture probe and sensor (3), temperature controller (10), muff (8), described pollutant analysis system comprises some output branch roads (11), filtration unit (12) and analytical instrument (13), described sampling head (1) is connected with the top of gas circuit maincenter passage (9) and this sampling head (1) is arranged on roof (2), described standard mixture tank (6), dynamic calibration instrument (5), Zero gas generator (7), gas circuit maincenter passage (9), output branch road (11), filtration unit (12), analytical instrument (13) are connected by air hose (4) successively, described gas circuit maincenter passage (9), solenoid valve (15) and sampling pump (14) are connected by air hose (4) successively, described relay (16) is connected with described dynamic calibration instrument (5), solenoid valve (15) and sampling pump (14) simultaneously, described humiture probe and sensor (3), temperature controller (10) are connected successively with muff (8), the gas outlet of described standard mixture tank (6) is connected to the calibrating gas input port of described dynamic calibration instrument (5), described Zero gas generator (7) gas outlet is connected to zero gas input port of described dynamic calibration instrument (5), the output port of described dynamic calibration instrument (5) is connected to the calibrating gas input port of described gas circuit maincenter passage (9), the calibrating gas input port of described gas circuit maincenter passage (9) is positioned at gas circuit maincenter passage (9) upper end and tries one's best near roof (2), described gas circuit maincenter passage (9) lower end is connected to described sampling pump (14) by solenoid valve (15), described gas circuit maincenter passage (9) is also provided with multiple output branch road (11), the output port of described output branch road (11) connects filtration unit (12) respectively, described filtration unit (12) connects corresponding analytical instrument (13) input port respectively, described humiture probe and sensor (3) are positioned at described gas circuit maincenter passage (9) upper end and try one's best near roof (2), described muff (8) comprises nexine ribbon heater and outer heat-insulation layer, nexine ribbon heater is connected with described temperature controller (10), and be coated on export branch road (11) and dynamic calibration instrument (5) and gas circuit maincenter passage (9) connecting line outside, outer heat-insulation layer is coated on outside nexine ribbon heater.
2. according to claim 1ly a kind ofly realize sampling/calibration alternately air automatic monitoring the device that runs of equivalence, it is characterized in that described relay (16) is for controlling the switch of sampling pump (14) and solenoid valve (15).
3. according to claim 3ly a kind ofly realize sampling/calibration alternately air automatic monitoring the device that runs of equivalence, it is characterized in that described gas circuit maincenter passage (9) and air hose (4), filtration unit (6) and filter membrane material are not with monitored pollutant generation chemical reaction and do not discharge the material having interfering material, for teflon, gas circuit maincenter passage (9) internal diameter is 15.0mm, air hose (4) internal diameter is 13.0mm, membrane filtration aperture is 47nm.
4. realize according to a kind of in claim 1-3 described in any one sampling/calibration alternately air automatic monitoring the device that runs of equivalence, and it is characterized in that described solenoid valve (12) is opening when sampling, is closed condition when calibrating.
5. realize according to a kind of in claim 1-3 described in any one sampling/calibration alternately air automatic monitoring the device that runs of equivalence, it is characterized in that the flow of described sampling pump (14) is 9.0ml/min, being opening when sampling, is closed condition when calibrating.
6. realize according to a kind of in claim 1-3 described in any one sampling/calibration alternately air automatic monitoring the device that runs of equivalence, and it is characterized in that described standard mixture tank (6) is closed condition when sampling, is opening when calibrating.
7. according to the realized sampling in claim 1-3 described in any one/calibration alternately equivalent air automatic monitoring device run, it is characterized in that described muff (8) comprises nexine ribbon heater and outer heat-insulation layer, interior layer material is glass fibre, and cladding material is the one in foam, sponge, leather.
8. realize according to a kind of in claim 1-3 described in any one sampling/calibration alternately air automatic monitoring the device that runs of equivalence, and it is characterized in that described temperature controller (10) arranges constant temperature is 40 DEG C.
9. the method adopting the air automatic monitoring device that alternately equivalence runs of the realized sampling/calibration according to any one of claim 1-8 to carry out atmospheric surveillance and calibration, it is characterized in that, during by arranging gas circuit cental system and improving instrument calibration, calibrating gas passes into mode, and connect dynamic calibration instrument by relay, solenoid valve and sampling pump, realize the alternately equivalent operational process of calibration/sampling: during calibration, open calibrating gas tank, Zero gas generator and dynamic calibration instrument, dynamic calibration instrument working signal is passed to relay, relay auto-breaking is made to carry out Controlling solenoid valve and sampling pump quits work, then stop gathering air, under analytical instrument carries air extractor power, enter analytical instrument after standard mixture input gas circuit maincenter passage to carry out analyzing and exporting data, during sampling, standard of closure gas tank, Zero gas generator and dynamic calibration instrument, the non-working signal of dynamic calibration instrument is passed to relay, relay is energized to Controlling solenoid valve and sampling pump unlatching work automatically, then stop calibration starting to gather air, under analytical instrument carries air extractor power, enter analytical instrument after air enters gas circuit maincenter passage and carry out analyzing and exporting data.
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CN106370792A (en) * 2016-11-01 2017-02-01 张嘉怡 Indoor air quality monitoring system
CN108956855A (en) * 2017-05-17 2018-12-07 台达电子工业股份有限公司 Test macro and method for air sensing device
CN110057980A (en) * 2019-05-16 2019-07-26 广州长德环境研究院有限公司 A kind of on-line gas analysis instrument state automatic monitoring device
CN110319871A (en) * 2019-05-09 2019-10-11 广州长德环境研究院有限公司 A kind of surrounding air gaseous pollutant monitors sampling general pipeline gas circuit monitoring system automatically

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