CN201344933Y

CN201344933Y - Smoke gas on-line monitoring global calibrating device

Info

Publication number: CN201344933Y
Application number: CNU200820240827XU
Authority: CN
Inventors: 张冬生; 要海东; 李春志
Original assignee: HEBEI SAILHERO ENVIRONMENTAL PROTECTION HI-TECH Co Ltd
Current assignee: HEBEI SAILHERO ENVIRONMENTAL PROTECTION HI-TECH Co Ltd
Priority date: 2008-12-29
Filing date: 2008-12-29
Publication date: 2009-11-11
Anticipated expiration: 2018-12-29

Abstract

The utility model relates to a smoke gas on-line monitoring global calibrating device, which is composed of a sampling detector, a sample gas preprocessing refrigerator, a detecting analyzer and a calibrating gas input passage, wherein the sample gas preprocessing refrigerator, the detecting analyzer and the calibrating gas input passage are respectively communicated with the sampling probe through pipelines. The smoke gas on-line monitoring global calibrating device is characterized in that an output opening of the standard gas input passage is communicated with an input opening of the sample gas preprocessing refrigerator. The smoke gas on-line monitoring global calibrating device utilizes the preprocessing refrigerator with sample gas flowing through and the detecting analyzer integrally to calibrate when a system samples, thereby eliminating influence of remained little water in the preprocessing refrigerator to system measurement precision and response time, and then the global calibrating device can more stably, more reliably and more accurately reflects effective components of a monitored pollution source. Further, the utility model not only effectively guarantees accuracy of measurement data of the on-line smoke gas monitoring system, but also can greatly increase stability and reliability of operation of the on-line smoke gas monitoring system.

Description

The omnidistance calibrating installation of flue gas on-line monitoring

Technical field

The utility model relates to the omnidistance calibrating installation of a kind of flue gas on-line monitoring.

Background technology

One of pollution source of surrounding air are the influences of boiler smoke discharging in the city.Therefore, need have high-intelligentization, high stability, high-precision monitoring instrument carries out real-time online and detects detecting objectionable impurities in the boiler smoke.The structure that is used for boiler smoke is emitted on line monitoring system is at present mostly formed by sampling probe with sample gas pre-service refrigerator, check and analysis instrument and the gas input channel of sampling probe pipeline connection successively, as shown in Figure 1, because the output of its gas input channel directly is connected to the input port of check and analysis instrument, therefore this kind mode only can be demarcated the part process of gas path in the fume continuous monitoring system process of gas path, and the pre-service refrigerator in the flow process is not partly demarcated, after causing the flue gas gathered by the pre-service refrigerator, its SO ₂Concentration obviously reduces, and the response time also prolongs greatly, thus the flue gas of being gathered since the water recovery in the pre-service refrigerator to SO ₂Concentration affects cause is inaccurate to the boiler smoke measurement data, particularly the SO in tested flue gas ₂Influence was even more serious when concentration was low, thus the effective constituent that makes Monitoring Data truly not reflect detected pollution source to be discharged pollutants.

Summary of the invention

The utility model purpose is at above-mentioned deficiency, and the omnidistance calibrating installation of flue gas on-line monitoring of a kind of high precision, high stability is provided.

The utility model purpose is achieved in that the omnidistance calibrating installation of this flue gas on-line monitoring forms by sampling probe with sample gas pre-service refrigerator, check and analysis instrument and the gas input channel of sampling probe pipeline connection successively, it is characterized in that the delivery outlet of described gas input channel is connected with the input port of sample gas pre-service refrigerator.

The technical progress that the utility model is obtained: this device is that pre-service refrigerator and check and analysis instrument that systematic sampling up-to-date style air-flow is crossed are done as a whole the demarcation, wherein comprises moisture to SO ₂And each link of the absorption of other component and system is to the influence of response time, thereby eliminated in the pre-service refrigerator residual a spot of water to the influence of The measuring precision or response time, therefore the effective constituent that omnidistance calibration system more can the reliable and stable pollution source of monitoring of reflection accurately, simultaneously the gas of high concentration is imported from the input port of pre-service refrigerator, also can be with the one-level refrigerating channel, moisture content in secondary refrigerating channel and the operation valve or equipment with sorptive material carry out sufficient saturated absorption to the gas of high concentration, after absorption is saturated, will no longer influence the concentration value of gas componant in the sample gas, thereby further reduce the influence that sample gas is detected quality.Delivery outlet and sample lines interface in the gas input channel increases a solenoid valve simultaneously, not only can effectively the gas in the pipeline be sealed up for safekeeping in the gas input channel, also played the effect of secondary seal, prevented that promptly three gas valves from leaking, and then influence the gas value.This device not only can effectively guarantee the accuracy of online flue gas monitoring systematic survey data, also can improve stable, the reliability of online flue gas monitoring system works greatly.

Description of drawings

Fig. 1 is the prior art constructions synoptic diagram.

Fig. 2 is the utility model one-piece construction synoptic diagram.

Embodiment

Be that embodiment further specifies the utility model below with the accompanying drawing, as shown in Figure 2, the omnidistance calibrating installation of this flue gas on-line monitoring is made up of sample gas pre-service refrigerator, check and analysis instrument and the gas input channel 2 of pipeline connection successively by sampling probe 1 with sampling probe 1, and the delivery outlet of described gas input channel 2 is connected with the input port of sample gas pre-service refrigerator.Above-mentioned sample gas pretreater is made of condenser LNQ and one-level refrigerating channel 3, secondary refrigerating channel 4 and solenoid valve SV2, membrane pump GMB, described one-level refrigerating channel 3 is communicated with the input port of secondary refrigerating channel 4 through condenser LNQ, solenoid valve SV2 and membrane pump GMB successively, and secondary refrigerating channel 4 exports the input end of check and analysis instrument to through condenser LNQ.Described check and analysis instrument is made up of solenoid valve SV1, the wet JSJ and filtrator GLQ and infrared spectrum analyser HYFXY of counting of inspection, the output of described solenoid valve SV1 is communicated with the input port of infrared spectrum analyser HYFXY through examining wet meter JSJ, filtrator GLQ successively, is fitted with solenoid valve SV3 at the output port of gas input channel 2.

This device in use, detect the flue gas of chimney output by sampling probe 1, and with detected sample gas through connecting line, operation valve KZF is delivered to the inlet of one-level refrigerating channel 3, the gas of being carried by gas input channel 2 also exports the inlet of one-level refrigerating channel 3 to behind solenoid valve SV3 and operation valve KZF simultaneously, sample gas and gas are under the suction function that membrane pump GMB produces, along one-level refrigerating channel 3 through condenser LNQ, solenoid valve SV2 and membrane pump GMB enter secondary refrigerating channel 4, promptly export the check and analysis instrument to after secondary refrigerating channel 4 enters condenser LNQ once more, the infrared spectrum analyser HYFXY in the check and analysis instrument promptly sample gas is carried out gas componant and concentration analysis detects.

Claims

1, the omnidistance calibrating installation of a kind of flue gas on-line monitoring, it is formed by sampling probe with sample gas pre-service refrigerator, check and analysis instrument and the gas input channel of sampling probe pipeline connection successively, it is characterized in that the delivery outlet of described gas input channel is connected with the input port of sample gas pre-service refrigerator.

2, the omnidistance calibrating installation of flue gas on-line monitoring according to claim 1, it is characterized in that described sample gas pretreater is made of condenser and one-level refrigerating channel, secondary refrigerating channel and operation valve, membrane pump, described one-level refrigerating channel is communicated with through condenser, operation valve and the membrane pump input port with the secondary refrigerating channel successively, and the secondary refrigerating channel exports the input end of check and analysis instrument to through condenser.

3, the omnidistance calibrating installation of flue gas on-line monitoring according to claim 2, it is characterized in that described check and analysis instrument is made up of solenoid valve, the wet meter of inspection and filtrator and infrared spectrum analyser, the output of described solenoid valve successively through examine wet meter, filtrator is communicated with the input port of far infrared analyser.

4, according to claim 1, the omnidistance calibrating installation of 2 or 3 described flue gas on-line monitorings, it is characterized in that the output port of described gas input channel is fitted with solenoid valve.