Chimney dust concentration online detection device

Abstract

The invention discloses a chimney dust concentration online detection device which comprises a case sampling pipe assembly, a branch sampling function pipeline is fixed in a case, a sampling detection port is formed in the branch sampling function pipeline, and a dust concentration detection instrument and a detection sampling pump are fixed in the case; a branch sampling pump, a branch sampling flow controller and a zero gas supply pipeline are further arranged in the case, the gas inlet end of the zero gas supply pipeline is communicated with the compressed air pipeline system, a power supply assembly for supplying power to internal components is arranged in the case, and a display screen is arranged on a shell of the case. According to the on-line detection device, a small part is separated and enters the dust concentration detection instrument together with zero gas to be detected after sampling is conducted according to the constant-speed sampling principle, the structure is reasonable, and the detection result is more accurate.

Description

technical field [0001] The invention relates to an online detection device for dust concentration, which is used for detecting the dust concentration of gas discharged from a chimney. Background technique [0002] At present, as people pay more and more attention to the quality of the living environment, and as the smog becomes more and more serious, the country's emission standards for enterprises are also gradually improving, especially for some heavy polluting enterprises such as chemical plants and steel mills. emissions need to be closely monitored. At present, the dust concentration detection of the chimney generally uses a sampling tube assembly to go deep into the chimney. The sample gas can detect the concentration of dust through the detection instrument. However, because the flue gas discharged from the chimney may contain a certain amount of moisture, and the viscosity of the dust is also relatively large, it is difficult to guarantee the accuracy of the detecti...

AI Technical Summary

Problems solved by technology

At present, the dust concentration detection of the chimney generally uses a sampling tube assembly to go deep into the chimney. The sample gas can detect the concentration of dust through the detection instrument. However, because the flue gas discharged from the chimney may contain a certain amount of moisture, and the viscosity of the dust is also relatively large, it is difficult to guarantee the accuracy of the detection results in this direct detection.

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