CN203053852U - Continuous monitoring system for LiSN type flue gas emission - Google Patents

Continuous monitoring system for LiSN type flue gas emission Download PDF

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Publication number
CN203053852U
CN203053852U CN 201220717419 CN201220717419U CN203053852U CN 203053852 U CN203053852 U CN 203053852U CN 201220717419 CN201220717419 CN 201220717419 CN 201220717419 U CN201220717419 U CN 201220717419U CN 203053852 U CN203053852 U CN 203053852U
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sample gas
continuous monitoring
monitoring system
data acquisition
acquisition unit
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CN 201220717419
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高中序
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Abstract

The utility model discloses a continuous monitoring system for LiSN type flue gas emission. The continuous monitoring system comprises a smoke dust instrument, an airflow parameter probe, a sampling probe, a data collector, a sample gas processor, a system power source and an industrial personal computer, wherein the smoke dust instrument and the airflow parameter probe are respectively connected with the data collector, the sampling probe is connected with the sample gas processor, the data collector and the sample gas processor are respectively connected with the industrial personal computer, and the system power source is respectively connected with the data collector, the sample gas processor and the industrial personal computer. The continuous monitoring system has the advantages that a smoke dust laser transmitting terminal is very easy and convenient to adjust, a receiving end has the function of adjusting vertical and horizontal shafts, and beam-focusing is very simple; an airflow parameter measurement part has very good line shape and automatic zero calibration function and are low in measurement errors; and an infrared analysis meter is used as the sample gas processor and can be used for very accurately measuring the components of harmful gases such as SO2, NO, NO2 and O2.

Description

LiSN type flue gas discharge continuous monitoring system
Technical field
The utility model belongs to the environment monitoring equipment technical field, relates to a kind of flue gas discharge continuous monitoring system.
Background technology
At present, what the concentrated heating in most city and domestic thermal power generation corporations used mostly is coal-burning boiler, uses coal-burning boiler that certain economy and practicality are arranged, but coal meeting in combustion process produces a large amount of SO 2, NO, NO 2Deng harmful gas and dust granule, for environmental protection requirement and improve coal burning efficient, a kind of system that can carry out continuous detecting to the flue gas behind the coal burning need be arranged, for economizing on coal to reduce discharging, Thermal Corp or electricity power enterprise provide quantitative basis.
Summary of the invention
The purpose of this utility model provides a kind of flue gas discharge continuous monitoring system, can more accurately monitor various parameters and the gas componant of discharging flue gas in the coal burning process.
The technical scheme that the utility model adopts is, a kind of flue gas discharge continuous monitoring system, comprise smokemeter, flow parameter probe, sampling probe, data acquisition unit, sample gas disposal device, system power supply and industrial computer, described smokemeter is connected with data acquisition unit respectively with the flow parameter probe, sampling probe is connected with sample gas disposal device, data acquisition unit and sample gas disposal device are connected respectively on the industrial computer, and system power supply is connected with data acquisition unit, sample gas disposal device and industrial computer respectively.
Feature of the present utility model is that also smokemeter is light extinction method laser smokemeter, comprises Laser emission end and receiving end.
Further, be connected with the optical mirror slip device that keeps clean on the Laser emission end of described smokemeter and the receiving end respectively, this device that keeps clean includes air strainer A, air strainer A is connected on the transmitting terminal and receiving end of smokemeter by purging motor, and purging motor is connected with system power supply by data acquisition unit.
Be provided with infrared spectrum analyser and PLC controller in the described sample gas disposal device.
Described industrial computer is provided with wireless telecommunications system and extraneous communication.
Described sampling probe, data acquisition unit and sample gas disposal device are connected with the blowback sweeping device respectively, and this blowback sweeping device comprises air compressor and air strainer B, and described air compressor is connected with system power supply.
The beneficial effects of the utility model are:
1) the utility model sample gas analytic unit adopts infrared gas analyzer or the uv analyzer that our company researches and develops alone, to SO 2, NO, NO 2, O 2Measurement etc. gas componant is very accurate.
2) the utility model gas-flow measurement partly has well linear and automatic zero adjustment function, and measuring error is little.
3) adjusting of the utility model smokemeter optical emitting unit is very easy, and receiving element has axle regulatory function in length and breadth, and is very simple to light.
4) infrared spectrum analyser in the utility model or uv analyzer and data acquisition unit adopt Siemens PLC C system as processor, and control and measure more precisely moves more stablely, is convenient to long-time non-fault and accurately moves.
5) infrared spectrum analyser in the utility model and uv analyzer use the modulation circuit system that our company develops alone, can prolong the continuous serviceable life of important devices greatly, especially uv analyzer, its ultraviolet source theoretical value in continuous serviceable life can reach 85.6, allows analyser almost become " never damaging " equipment.
6) infrared spectrum analyser in the utility model has adopted new modulation technique and special infrared sensor, not only can accurately measure each component concentration, and can well exclude moisture interference.
Description of drawings
Fig. 1 is the syndeton synoptic diagram of a kind of flue gas discharge continuous monitoring system of the utility model.
Among the figure, 1. smokemeter, 2. flow parameter probe, 3. sampling probe, 4. data acquisition unit, 5. sample gas disposal device, 6. system power supply, 7. industrial computer, 8. air strainer A, 9. purging motor, 10. air compressor, 11. air strainer B.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
The utility model provides a kind of flue gas discharge continuous monitoring system, as shown in Figure 1, comprise smokemeter 1, flow parameter probe 2, sampling probe 3, data acquisition unit 4, sample gas disposal device 5, system power supply 6 and industrial computer 7, smokemeter 1 is connected with data acquisition unit 4 respectively with flow parameter probe 2, sampling probe 3 is connected with sample gas disposal device 5, data acquisition unit 4 is connected respectively on the industrial computer 7 with sample gas disposal device 5, and system power supply 6 is connected with data acquisition unit 4, sample gas disposal device 5 and industrial computer 7 respectively.
In the specific implementation process, smokemeter 1 adopts light extinction method laser smokemeter, comprises Laser emission end and receiving end.Transmitting terminal and receiving end are installed in the opposite end of flue sidewall respectively, and during installation, transmitting terminal must strict be aimed at the light path of receiving end, and the utility model receiving end has axle regulatory function in length and breadth, and is very convenient to light.During work, transmitting terminal gives off laser beam and passes flue, only once arrives receiving end through flue, and intensity of laser beam can weaken to some extent because of the influence of flue dust in the flue, the variation of luminosity is measured by receiving end, calculates the dust concentration value according to the constant of setting by dullness then.The optical mirror slip of smokemeter 1 Laser emission end and receiving end can adhere to a large amount of dusts owing to being in the flue dust environment for a long time, thereby cause measurement data inaccurate, therefore also be provided with the optical mirror slip cleaning device on the smokemeter 1, comprise air strainer A8 and purging motor 9, thereby purging motor 9 will directly blow on the optical mirror slip of Laser emission end and receiving end and reach the purpose of removing dust by the clean air that air strainer A8 filters.Smokemeter 1 is connected with data acquisition unit 4 with signal wire by the low-voltage alternating current power supply line, 4 independent power source provides work required low-tension current by the low-voltage alternating current power supply line for smokemeter 1 in the data acquisition unit, and smokemeter 1 is sent to the dust concentration information that obtains on the data acquisition unit 4 by signal wire.
Flow parameter probe 2 and sampling probe 3 also directly are connected on the flue.Flow parameter probe 2 is connected with data acquisition unit 4 by flow velocity dynamic pressure tube, flow velocity static tube and PT100 line, just can obtain the pressure of flue dust air-flow by the difference of measuring flow velocity dynamic pressure tube and flow velocity static tube place stream pressure, and by calculating air-flow velocity, the temperature signal of PT100 line transmission airflow.Sampling probe 3 is connected on the sample gas disposal device 5 by sample lines, sampling companion's heater circuit and sampling probe anti-blowpipe, sample lines is sent to the sample gas that collects on the sample gas disposal device 5, sampling companion heater circuit can heat flue gas in the flue gas transport process, prevent that in sample gas transmission course temperature reduces the back component and changes, the sampling probe anti-blowpipe is used for pressurized air guided on the sampling probe that cleaning is attached to top flue dust on 3.Be provided with infrared spectrum analyser and PLC controller in the sample gas disposal device 5 of the present utility model.Infrared spectrum analyser utilizes infrared ray that the sample gas that collects is analyzed, based on component concentrations difference to be analyzed, the radiation energy difference that absorbs, remaining radiation energy makes the temperature in the detecting device raise different, thereby produce the electric signal of a voltage-level detector, like this, just can measure component concentrations to be analyzed indirectly.The PLC controller is controlled the course of work of gas analyzer, and communication line the controlling the flow parameter data acquisition by being connected with data acquisition unit 4.Data acquisition unit 4, sample gas disposal device 5 are connected with industrial computer 7 respectively, the component ratio information that parameters such as the dust concentration that records, pressure, flow velocity, temperature and the analysis of sample gas are obtained is sent on the industrial computer 7, the operation of 7 pairs of total systems of industrial computer is monitored and is controlled, and sends above-mentioned information to environmental administration for monitoring enterprise fume emission situation by wireless mode.Sampling probe 3, data acquisition unit 4 and sample gas disposal device 5 long-term contacts with flue dust gas can be adhered to a large amount of flue dust, must adopt the blowback sweeping device that flue dust is cleared up after work a period of time, the blowback sweeping device comprises air compressor 10 and air strainer B11, air strainer B11 filters the gases at high pressure that air compressor 10 produces, and moisture and the oil content clean air that forms dry oil free got rid of wherein are sent to respectively on data acquisition unit 4 and the sample gas disposal device 5 by the pressure gas pipeline, the anti-blowpipe of sampling probe 3 is connected on the sample gas disposal device 5, obtains purge gas from sample gas disposal device 5.System power supply 6 is connected with data acquisition unit 4, sample gas disposal device 5, industrial computer 7, air compressor 10 respectively, and is the said equipment power supply, and the purging motor 9 on the smokemeter 1 is connected on the system power supply 6 by data acquisition unit 4.
More than show and described ultimate principle of the present utility model, principal character and advantage of the present utility model; above-mentioned embodiment and instructions are principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in the claimed scope of the present utility model.The protection domain that the utility model requires is defined by claims and equivalent thereof.

Claims (6)

1. flue gas discharge continuous monitoring system, it is characterized in that, comprise smokemeter (1), flow parameter probe (2), sampling probe (3), data acquisition unit (4), sample gas disposal device (5), system power supply (6) and industrial computer (7), described smokemeter (1) is connected with data acquisition unit (4) respectively with flow parameter probe (2), sampling probe (3) is connected with sample gas disposal device (5), data acquisition unit (4) and sample gas disposal device (5) are connected respectively on the industrial computer (7), system power supply (6) respectively with data acquisition unit (4), sample gas disposal device (5) and industrial computer (7) connect.
2. a kind of flue gas discharge continuous monitoring system as claimed in claim 1 is characterized in that, smokemeter (1) is light extinction method laser smokemeter, comprises Laser emission end and receiving end.
3. a kind of flue gas discharge continuous monitoring system as claimed in claim 2, it is characterized in that, be connected with the optical mirror slip cleaning device respectively on the Laser emission end of described smokemeter (1) and the receiving end, this cleaning device includes air strainer A (8), air strainer A (8) is connected to by purging motor (9) on the transmitting terminal and receiving end of smokemeter (1), and purging motor (9) is connected with system power supply (6) by data acquisition unit (4).
4. a kind of flue gas discharge continuous monitoring system as claimed in claim 1 is characterized in that, is provided with infrared spectrum analyser and PLC controller in the described sample gas disposal device (5).
5. a kind of flue gas discharge continuous monitoring system as claimed in claim 1 is characterized in that, described industrial computer (7) is provided with wireless telecommunications system and extraneous communication.
6. as claim 1,2,3,4 or 5 described a kind of flue gas discharge continuous monitoring systems, it is characterized in that, described sampling probe (3), data acquisition unit (4) and sample gas disposal device (5) are connected with the blowback sweeping device respectively, this blowback sweeping device comprises air compressor (10) and air strainer B (11), and described air compressor (10) is connected with system power supply (6).
CN 201220717419 2012-12-24 2012-12-24 Continuous monitoring system for LiSN type flue gas emission Expired - Fee Related CN203053852U (en)

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CN 201220717419 CN203053852U (en) 2012-12-24 2012-12-24 Continuous monitoring system for LiSN type flue gas emission

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103529095A (en) * 2013-10-28 2014-01-22 新疆智翔科技有限公司 Poisonous and harmful gas monitoring system
CN103884821A (en) * 2014-04-14 2014-06-25 周志国 Device and method for measuring nitric oxide component of exhaust generated by electricity generation in thermal power plant
CN103913545A (en) * 2014-03-25 2014-07-09 安徽皖仪科技股份有限公司 Novel CEMS (Continuous Emission Monitoring System) heating box system
CN108572240A (en) * 2018-06-22 2018-09-25 佛山瀚兽环境科技服务有限公司 Waste gas monitoring device with electrification energy storage function

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103529095A (en) * 2013-10-28 2014-01-22 新疆智翔科技有限公司 Poisonous and harmful gas monitoring system
CN103913545A (en) * 2014-03-25 2014-07-09 安徽皖仪科技股份有限公司 Novel CEMS (Continuous Emission Monitoring System) heating box system
CN103913545B (en) * 2014-03-25 2017-01-18 安徽皖仪科技股份有限公司 Novel CEMS (Continuous Emission Monitoring System) heating box system
CN103884821A (en) * 2014-04-14 2014-06-25 周志国 Device and method for measuring nitric oxide component of exhaust generated by electricity generation in thermal power plant
CN103884821B (en) * 2014-04-14 2015-10-21 周志国 A kind of thermal power plant generating tail gas nitrogen oxide component measurement mechanism and measuring method thereof
CN108572240A (en) * 2018-06-22 2018-09-25 佛山瀚兽环境科技服务有限公司 Waste gas monitoring device with electrification energy storage function

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Granted publication date: 20130710

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