CN104793002B - A kind of air automatic monitoring device and method realizing sampling/calibration alternately equivalence operation - Google Patents

A kind of air automatic monitoring device and method realizing sampling/calibration alternately equivalence operation Download PDF

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Publication number
CN104793002B
CN104793002B CN201510110689.8A CN201510110689A CN104793002B CN 104793002 B CN104793002 B CN 104793002B CN 201510110689 A CN201510110689 A CN 201510110689A CN 104793002 B CN104793002 B CN 104793002B
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sampling
calibration
gas circuit
passage
gas
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CN104793002A (en
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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

A kind of air automatic monitoring device and method realizing sampling/calibration alternately equivalence operation, it is characterized in that: during by arranging gas circuit cental system and improving instrument calibration, calibrating gas is passed through mode, and connect dynamic calibration instrument, electromagnetic valve and sampling pump by relay, dynamic calibration instrument is opened during calibration, electromagnetic valve and sampling pump is closed by relay power-off, dynamic calibration instrument is closed during sampling, opens solenoid valve and sampling pump is come, it is achieved the alternately equivalence running of calibration/sampling by relay power.Described air acquisition system is mainly sampling head, described calibrating gas generation system includes calibrating gas tank, Zero gas generator, dynamic calibration instrument, described gas circuit cental system includes gas circuit maincenter passage, described intelligent conversion control system includes sampling pump, electromagnetic valve, relay, described attemperating unit includes humiture probe and sensor, Temperature and Humidity Control instrument, muff, and described pollutant analysis system includes some defecators and analytical tool.

Description

A kind of air automatic monitoring device and method realizing sampling/calibration alternately equivalence operation
Technical field
The present invention relates to air automatic monitoring technical field, particularly relate to a kind of air automatic monitoring device and method realizing sampling/calibration alternately equivalence operation.
Background technology
The sampling of existing Atmospheric Automatic Monitoring System is respectively provided with different gas delivery channels from calibration process.During sampling, air enters sample gas passage, then is analyzed by being passed through different analytical tool after defecator;During calibration, respectively need tested project (sulfur dioxide, nitrogen dioxide, carbon monoxide) respectively one calibrating gas tank of configuration of mark-on calibration gas, calibrating gas accesses dynamic calibration instrument by different air delivering pipelines respectively, is then passed directly into analytical tool and is analyzed calibration.
Although said method can complete sampling and the instrument calibration of Atmospheric Automatic Monitoring System, but finds the part that comes with some shortcomings in actual use, routine work is affected.In real work, sampling and calibration are respectively equipped with single gas passage, alignment requirements for satisfied different analytical tool, it is respectively three kinds of gases and is respectively configured calibrating gas tank and control valve, to stop when instrument calibration gathering extraneous air simultaneously, calibration process complete after resampling again, 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 the most 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 a kind of air automatic monitoring device and method realizing sampling/calibration alternately equivalence operation, when it is by improving instrument calibration, calibrating gas is passed through mode, and connect dynamic calibration instrument by relay, electromagnetic valve and sampling pump, dynamic calibration instrument is opened during calibration, electromagnetic valve and sampling pump is closed 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 equivalence running of calibration/sampling, effectively to solve the drawbacks described above that in real work, existing Atmospheric Automatic Monitoring System exists.
The present invention is by the following technical solutions.
A kind of air automatic monitoring device realizing sampling/calibration alternately equivalence operation, including air acquisition system, calibrating gas generation system, gas circuit cental system, intelligent conversion control system, attemperating unit, pollutant analysis system and the air hose 4 of connecting components;It is characterized in that, described air acquisition system includes sampling head 1, roof 2, described calibrating gas generation system includes standard mixture tank 6, Zero gas generator 7, dynamic calibration instrument 5, described gas circuit cental system includes gas circuit maincenter passage 9, described intelligent conversion control system includes sampling pump 14, electromagnetic valve 15, relay 16, described attemperating unit includes humiture probe and sensor 3, temperature controller 10, muff 8, and described pollutant analysis system includes some output branch roads 11, defecator 12 and analytical tool 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, gas circuit maincenter passage 9, output branch road 11, defecator 12, analytical tool 13 pass sequentially through air hose 4 and connect;Described gas circuit maincenter passage 9, electromagnetic valve 15 and sampling pump 14 pass sequentially through air hose 4 and connect;Described relay 16 is connected with described dynamic calibration instrument 5, electromagnetic valve 15 and sampling pump 14 simultaneously;Described humiture probe and sensor 3, temperature controller 10 and muff 8 are sequentially connected with;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 close proximity to roof 2, described gas circuit maincenter passage 9 lower end is connected to described sampling pump 14 by electromagnetic valve 15, described gas circuit maincenter passage 9 is additionally provided with multiple output branch road 11, the output port of described output branch road 11 connects defecator 12 respectively, described defecator 12 connects corresponding analytical tool 13 input port respectively;Described humiture probe and sensor 3 are positioned at described gas circuit maincenter passage 9 upper end and close proximity to roof 2;Described muff 8 comprises nexine ribbon heater and outer layer heat-insulation layer, nexine ribbon heater is connected with described temperature controller 10, and be coated on outside the connecting line of output branch road 11 and dynamic calibration instrument 5 and gas circuit maincenter passage 9, outer layer heat-insulation layer is coated on outside nexine ribbon heater.
Described relay 16 is for controlling sampling pump 14 and the switch of electromagnetic valve 15.
Described gas circuit maincenter passage 9 and air hose 4, defecator 12 and filter membrane material be not with monitored pollutant generation chemical reaction and do not discharge and have the material of interfering material, for politef, gas circuit maincenter passage 9 internal diameter is 15.0mm, air hose 4 internal diameter is 13.0mm, membrane filtration aperture is 47nm.
Described electromagnetic valve 15 is opening when sampling, is closed mode when calibration.
The flow of described sampling pump 14 is 9.0ml/min, is opening when sampling, is closed mode when calibration.
Described standard mixture tank 6 is closed mode when sampling, is opening when calibration.
Muff 8 comprises nexine ribbon heater and outer layer 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 using above-mentioned the realized sampling described in any one/calibration air automatic monitoring device that alternately equivalence runs to carry out atmospheric monitoring and calibration, it is characterized in that, during by arranging gas circuit cental system and improving instrument calibration, calibrating gas is passed through mode, and connect dynamic calibration instrument by relay, electromagnetic valve and sampling pump, realize the alternately equivalence running of calibration/sampling: during calibration, open standard mixture tank, Zero gas generator and dynamic calibration instrument, dynamic calibration instrument working signal is transferred to relay, make relay automatically power off and control electromagnetic valve and sampling pump quits work, then stop gathering air, under analytical tool carries air extractor power, enter analytical tool after standard mixture input gas circuit maincenter passage be analyzed and export data;During sampling, close standard mixture tank, Zero gas generator and dynamic calibration instrument, the non-working signal of dynamic calibration instrument is transferred to relay, make that relay is auto-power on controls electromagnetic valve and sampling pump unlatching work, then stopping calibration and start to gather air, air enters analytical tool under analytical tool carries air extractor power after entering gas circuit maincenter passage and is analyzed and exports data.
Compared with prior art, the present invention's has following beneficial effect.
(1) use mixing mark-on mode, reduce calibrating gas tank and the usage amount of electromagnetic valve, time saving and energy saving in operation, economically save material benefit.
(2) by arranging gas circuit maincenter passage, through identical physical change process (being incubated and defecator) before making calibrating gas and sampled air enter analytical tool, thus calibrating gas and actual samples gas channels inconsistent caused systematic error when overcoming in existing Atmospheric Automatic Monitoring System mark-on calibration, it is effectively improved the degree of accuracy of data.
(3) intelligence control system is increased, dynamic calibration instrument, electromagnetic valve and sampling pump is connected by relay, realize the automatic conversion of calibration/sampling process, dynamic calibration instrument is opened during calibration, electromagnetic valve and sampling pump is closed 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 analysis process, it is possible to achieve detect and judge the seal of gas circuit and the transparent performance of filter membrane, it is prevented effectively from gas leakage and filter membrane blocks the data distortion caused.
(5) temperature-humidity sensor and probe are set, dynamically monitor and transmit the temperature of gas, humidity to temperature control system, achieve the heating of the Real-time and Dynamic to gas, effectively reduce air themperature, humidity changes 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 defecator thereof and residual gas discharge-channel, the flow of conservative control sampling pump, in maintenance gas circuit maincenter passage, gas flow stablizes, realize sampling pump no-load running sampling, simplify device, easy to operate, economy.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structure chart 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, calibrationxCalibration curve, its slope M=0.9935, intercept B=1.6056, coefficient R=0.9999.
SO when Fig. 5 is flue gas analyser calibration2Calibration 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, standard mixture tank, 7, Zero gas generator, 8, muff, 9, gas circuit maincenter passage, 10, temperature controller, 11, output branch road, 12, defecator, 13, analytical tool, 14, sampling pump, 15, electromagnetic valve, 16, relay, 17, ribbon heater joint, 18, nexine ribbon heater, 19, outer layer heat-insulation layer.
Detailed description of the invention
Below in conjunction with the accompanying drawings and detailed description of the invention the invention will be further described.
As shown in Figure 1, a kind of air automatic monitoring device realizing sampling/calibration alternately equivalence operation, including air acquisition system, calibrating gas generation system, gas circuit cental system, intelligent conversion control system, attemperating unit, pollutant analysis system and the air hose 4 of connecting components;It is characterized in that, described air acquisition system includes sampling head 1, roof 2, described calibrating gas generation system includes standard mixture tank 6, Zero gas generator 7, dynamic calibration instrument 5, described gas circuit cental system includes gas circuit maincenter passage 9, described intelligent conversion control system includes sampling pump 14, electromagnetic valve 15, relay 16, described attemperating unit includes humiture probe and sensor 3, temperature controller 10, muff 8, and described pollutant analysis system includes some output branch roads 11, defecator 12 and analytical tool 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, gas circuit maincenter passage 9, output branch road 11, defecator 12, analytical tool 13 pass sequentially through air hose 4 and connect;Described gas circuit maincenter passage 9, electromagnetic valve 15 and sampling pump 14 pass sequentially through air hose 4 and connect;Described relay 16 is connected with described dynamic calibration instrument 5, electromagnetic valve 15 and sampling pump 14 simultaneously;Described humiture probe and sensor 3, temperature controller 10 and muff 8 are sequentially connected with;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 close proximity to roof 2, described gas circuit maincenter passage 9 lower end is connected to described sampling pump 14 by electromagnetic valve 15, described gas circuit maincenter passage 9 is additionally provided with multiple output branch road 11, the output port of described output branch road 11 connects defecator 12 respectively, described defecator 12 connects corresponding analytical tool 13 input port respectively;Described humiture probe and sensor 3 are positioned at described gas circuit maincenter passage 9 upper end and close proximity to roof 2;Described muff 8 comprises nexine ribbon heater and outer layer heat-insulation layer, nexine ribbon heater is connected with described temperature controller 10, and be coated on outside the connecting line of output branch road 11 and dynamic calibration instrument 5 and gas circuit maincenter passage 9, outer layer heat-insulation layer is coated on outside nexine ribbon heater.
Described relay 16 is for controlling sampling pump 14 and the switch of electromagnetic valve 15.
Described gas circuit maincenter passage 9 and air hose 4, defecator 12 and filter membrane material be not with monitored pollutant generation chemical reaction and do not discharge and have the material of interfering material, for politef, gas circuit maincenter passage 9 internal diameter is 15.0mm, air hose 4 internal diameter is 13.0mm, membrane filtration aperture is 47nm.
Described electromagnetic valve 15 is opening when sampling, is closed mode when calibration.
The flow of described sampling pump 14 is 9.0ml/min, is opening when sampling, is closed mode when calibration.
Described standard mixture tank 6 is closed mode when sampling, is opening when calibration.
Muff 8 comprises nexine ribbon heater and outer layer 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/calibration air automatic monitoring device and method that alternately equivalence runs and realize the most alternately equivalence of air automatic monitoring sampling and instrument calibration process and 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 transferred to relay 16 and makes this relay power-off, the also power-off simultaneously of the electromagnetic valve 15 of gas circuit maincenter passage 9 end and sampling pump 14 stops gathering air and enters gas circuit maincenter passage 9, calibrating gas and air are passed through after dynamic calibration instrument 5 carries out proportioning mixing by a certain percentage and are passed through gas circuit maincenter passage 9, standard mixture quickly fills with after gas circuit maincenter passage 9 under analytical tool 13 built-in air extractor effect, it is analyzed in defecator 12 enters analytical tool 13 via output branch road 11, and according to curve linear correlation coefficient precision, instrument is calibrated, can judge whether gas channels leaks gas and block accordingly simultaneously.
1, nitrogen-oxide analyzer, calibrates obtained valid data
Curve is shown in accompanying drawing 3, accompanying drawing 4
Molybdenum changes the average conversion efficiency of stove into 99.38% more than 96%, and conversion effect is good.
2, sulfur dioxide calibrates obtained valid data
Curve is shown in accompanying drawing 5.
3, carbon monoxide calibrates obtained valid data
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 transferred to relay 16 and makes this relay power, electromagnetic valve 15 and the sampling pump 14 of gas circuit maincenter passage 9 end are energized in running order the most simultaneously, under the dynamic action of sampling pump 14, air enters gas circuit maincenter passage 9 by being arranged on the sampling head 1 outside roof 2, under the effect of the air extractor set in analytical tool 13, air enters in analytical tool 13 after defecator 12 filters and removes particulate matter therein via output branch road 11 and is analyzed, and exports real-time analytical data.
This device is sampled after a period of time, and analytical tool 13 needs again to calibrate, and repeats above-mentioned instruments calibration steps.

Claims (7)

1. can realize sampling/calibration air automatic monitoring device that alternately equivalence runs, including the air hose (4) of air acquisition system, calibrating gas generation system, 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 includes sampling head (1), roof (2), described calibrating gas generation system includes standard mixture tank (6), Zero gas generator (7), dynamic calibration instrument (5), described gas circuit cental system includes gas circuit maincenter passage (9), described intelligent conversion control system includes sampling pump (14), electromagnetic valve (15), relay (16), described attemperating unit includes humiture probe and sensor (3), temperature controller (10), muff (8), described pollutant analysis system includes some output branch roads (11), defecator (12) and analytical tool (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), gas circuit maincenter passage (9), output branch road (11), defecator (12), analytical tool (13) pass sequentially through air hose (4) and connect;Described gas circuit maincenter passage (9), electromagnetic valve (15) and sampling pump (14) pass sequentially through air hose (4) and connect;Described relay (16) is connected with described dynamic calibration instrument (5), electromagnetic valve (15) and sampling pump (14) simultaneously;Described humiture probe and sensor (3), temperature controller (10) and muff (8) are sequentially connected with;nullThe 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 close proximity to roof (2),Described gas circuit maincenter passage (9) lower end is connected to described sampling pump (14) by electromagnetic valve (15),Described gas circuit maincenter passage (9) is additionally provided with multiple output branch road (11),The output port of described output branch road (11) connects defecator (12) respectively,Described defecator (12) connects corresponding analytical tool (13) input port respectively;Described humiture probe and sensor (3) are positioned at described gas circuit maincenter passage (9) upper end and close proximity to roof (2);Described muff (8) comprises nexine ribbon heater and outer layer heat-insulation layer, nexine ribbon heater is connected with described temperature controller (10), and be coated on outside the connecting line of output branch road (11) and dynamic calibration instrument (5) and gas circuit maincenter passage (9), outer layer heat-insulation layer is coated on outside nexine ribbon heater;Described relay (16) is used for controlling sampling pump (14) and the switch of electromagnetic valve (15);Filter membrane in described gas circuit maincenter passage (9), air hose (4) and defecator (12) be not with monitored pollutant generation chemical reaction and do not discharge and have the material politef of interfering material to make, gas circuit maincenter passage (9) internal diameter is 15.0mm, air hose (4) internal diameter is 13.0mm, membrane filtration aperture is 47nm.
A kind of air automatic monitoring device realizing sampling/calibration alternately equivalence operation the most according to claim 1, it is characterised in that described electromagnetic valve (15) is opening when sampling, is closed mode when calibration.
A kind of air automatic monitoring device realizing sampling/calibration alternately equivalence operation the most according to claim 1, it is characterised in that the flow of described sampling pump (14) is 9.0ml/min, is opening when sampling, is closed mode when calibration.
A kind of air automatic monitoring device realizing sampling/calibration alternately equivalence operation the most according to claim 1, it is characterised in that described standard mixture tank (6) is closed mode when sampling, is opening when calibration.
A kind of air automatic monitoring device realizing sampling/calibration alternately equivalence operation the most according to claim 1, it is characterized in that described muff (8) comprises nexine ribbon heater and outer layer heat-insulation layer, interior layer material is glass fibre, and cladding material is the one in foam, sponge, leather.
A kind of air automatic monitoring device realizing sampling/calibration alternately equivalence operation the most according to claim 1, it is characterised in that it is 40 DEG C that described temperature controller (10) arranges constant temperature.
7. the method that the air automatic monitoring device using a kind of as according to any one of claim 1-6 to realize sampling/calibration alternately equivalence operation carries out atmospheric monitoring and calibration, it is characterized in that, during by arranging gas circuit cental system and improving instrument calibration, calibrating gas is passed through mode, and connect dynamic calibration instrument by relay, electromagnetic valve and sampling pump, realize the alternately equivalence running of calibration/sampling: during calibration, open standard mixture tank, Zero gas generator and dynamic calibration instrument, dynamic calibration instrument working signal is transferred to relay, make relay automatically power off and control electromagnetic valve and sampling pump quits work, then stop gathering air, under analytical tool carries air extractor power, enter analytical tool after standard mixture input gas circuit maincenter passage be analyzed and export data;During sampling, close standard mixture tank, Zero gas generator and dynamic calibration instrument, the non-working signal of dynamic calibration instrument is transferred to relay, make that relay is auto-power on controls electromagnetic valve and sampling pump unlatching work, then stopping calibration and start to gather air, air enters analytical tool under analytical tool carries air extractor power after entering gas circuit maincenter passage and is analyzed and exports data.
CN201510110689.8A 2015-03-13 2015-03-13 A kind of air automatic monitoring device and method realizing sampling/calibration alternately equivalence operation Expired - Fee Related CN104793002B (en)

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