Annular dust concentration measuring instrument correction device and use method thereof

Abstract

The invention discloses an annular dust concentration measuring instrument correction device and a use method thereof. The correction device comprises an annular wind tunnel, fans, powder honeycombs, a dust generation mechanism and a detection mechanism, the annular wind tunnel comprises an air inlet section, a steady flow section, a first corner section, a test section, an air outlet section and a second corner section which are sequentially connected in a clockwise direction; the fans are respectively arranged at the positions close to the front end and the rear end in the test section, and the honeycombs are respectively arranged at the front end and the rear end of the test section and are positioned between the two fans; and the dust generation mechanism is arranged in the steady flow section, and the detection mechanism is arranged in the test section and is positioned between the two honeycombs. According to the annular wind tunnel, the occupied area is saved, the energy consumption of a test system is reduced, the two fans rotating in the opposite directions are installed on the test section, the transverse wind flow influence is eliminated while continuous wind flow is provided for the test section, the honeycombs are installed between the fans, bias flow formed by the first corner section is reduced, and the correction test is completed by continuously and repeatedly using the annular dust airflow.

Description

technical field [0001] The invention belongs to the technical field of dust concentration detection equipment, and in particular relates to a ring-shaped dust concentration measuring instrument calibration device and a use method thereof. Background technique [0002] In recent years, with the rapid development of industrial technology and economic prosperity, people have paid more and more attention to environmental protection, and the environmental requirements for construction sites have also become higher and higher. Especially for the coal mine industry, it is required to strictly test the dust concentration of the site environment to ensure The production environment is safe and healthy. With the development of society, the detection method of dust concentration is also constantly improving, and the dust detection technology can be divided from different angles. According to whether the dust in the air is collected and sampled during the dust measurement process, it i...

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Problems solved by technology

[0004] The object of the present invention is to provide a calibration device for an annular dust concentration measuring instrument, which changes the horizontal wind tunnel into an annular wind tunnel, which not only solves the problems of large area occupation and high energy consumption of the traditional horizontal wind tunnel, but also eliminates the formation of dust in the annular wind tunnel. Bias current and eddy current phenomenon, provide a stable and uniform dust environment, improve detection accuracy and correction effect

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