Smoke constant speed constant current sampling device and method
A technology of flow sampling and flue gas flow rate, which is applied in the field of fast and constant flow sampling devices, fast and constant flow sampling, and sampling devices, can solve problems such as changes, inability to sample flue gas, and inability to collect PM2.5 particulate matter, so as to avoid corrosion. , the effect of avoiding clogging
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[0030] Such as figure 1 The flue gas constant-velocity and constant-flow sampling device shown includes a sampling unit, an air supply unit, and a velocity measuring unit. The sampling unit includes a sampling nozzle 1 , a particle cutter 2 , a filter holder 3 , a sampling flow controller 4 , and an air pump 5 . The air supply unit includes an intake pipe 6 , an air flow controller 7 and an air pump 8 . The speed measuring unit includes a flue gas flow meter 9 .
[0031] The sampling nozzle 1 is installed at the inlet of the particle cutter 2 . The particle cutter 2, the membrane filter holder 3, the sampling flow controller 4, and the suction pump 5 are connected in sequence through pipelines. A filter membrane is placed in the membrane filter holder 3 . There is an opening on the sampling nozzle 1 to connect to the air intake pipe 6, and the air intake pipe 6 is connected to the air flow controller 7 and the air pump 8 in turn.
[0032] The particle cutter 2 can be a si...
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