Multipoint grid method flue gas mixed sampling device

Abstract

The invention relates to a multipoint grid method flue gas mixed sampling device. The device is characterized in that: it includes a pipe base, a plurality of flue gas sampling pipes, a fixation bolt,connecting hoses and a flue gas analyzer. All the flue gas sampling pipes are arranged on the pipe seat parallel to each other, and are fixed on the pipe seat through the fixation bolt, one ends of the flue gas sampling pipes are connected to the connecting hoses, the connecting hoses are connected to the flue gas analyzer, and the other ends of the flue gas sampling pipes are equipped with sampling holes. According to the invention, the distance by which the flue gas sampling pipes pass through the pipe base can be adjusted to adapt to the grid partition requirements of flues with differentdepths, and through matching of the sampling ports of the flue gas sampling pipes and the length of the sampling pipes, the flow of each flue gas sampling pipe can always maintain consistent, the accuracy of flue gas sampling measurement is guaranteed, also thermocouple fixed tubes are installed at the same time, thus facilitating measurement of flue gas components and flue gas temperature simultaneously.

Description

technical field [0001] The invention relates to a flue gas sampling device, in particular to a multi-point grid method flue gas mixing sampling device. Background technique [0002] In the production links of electric power, energy, building materials and metallurgy industries, large boilers are indispensable power equipment. The basic technical means of flue gas sampling in the process of monitoring the performance and environmental indicators of boilers and auxiliary equipment is the basis of various experimental tests. As the capacity of the boiler increases, the size of the flue increases gradually. According to the requirements of the test regulations, the grid method must be used to measure and sample the flue gas composition in the large flue. [0003] There are two main methods of flue gas sampling: one is to use sampling tubes to measure one by one or after mixing them at different depths; Flue gas samples are mixed and analyzed to obtain an average gas compositio...

AI Technical Summary

Problems solved by technology

Although the first method is theoretically feasible, the operation is cumbersome, and the sampling tube needs to be unplugged and inserted continuously, and it takes a long time; while the second method is relatively simple and fast, but the resistance between different sampling holes is different, resulting in the The flow rate of the gas sampling hole is different, and the distribution of gas components at each sampling point is different, which may cause deviations in the measurement results

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