Measuring device for wind speed of pulverized coal pipeline

Abstract

The invention discloses a measuring device for wind speed of a pulverized coal pipeline. The measuring device comprises a first measuring pipe, a second measuring pipe and a seal head. The first measuring pipe and the second measuring pipe simultaneously extend into the pulverized coal pipeline and are arranged side by side to form a group of back-to-back pipes, the seal head is used for being fixedly connected with the pulverized coal pipeline, and the back-to-back pipes are simultaneously penetratingly arranged in the seal head and are slidably movably connected with the seal head. The effective measurement length of the measuring device can be changed, the measuring device can be reused, and coefficients only need to be calibrated at one step when the measuring device is delivered from a factory, so that the measuring device is high in utilization efficiency and low in manufacturing cost.

Description

technical field [0001] The invention relates to a wind speed measuring device, in particular to a coal pulverized pipeline wind speed measuring device. Background technique [0002] During the commissioning process of the utility boiler, it is necessary to use the back pipe (composed of two measuring pipes back to back) to carry out the wind speed leveling test in the primary air pulverized coal pipe (hereinafter also referred to as the air pipe) on the same floor. This is the primary condition for uniform pulverized coal concentration at each primary air nozzle, preventing powder accumulation in the tube, organizing the air flow in the furnace, making the pulverized coal ignite stably, burning well in the furnace, and preventing slagging in some areas of the water wall. During the test, the back pipe extends radially into the air pulverized coal pipe, and the inlet of the back pipe is required to be located exactly in the center of the primary air pulverized coal pipe to be...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art that the measurement length of the backrest tube is fixed, and it is only used once, causing serious waste, and to provide an effective measurement length that is scalable and reusable, and the calibration coefficient only needs to be Air velocity measuring device for pulverized coal pipeline calibrated at the factory

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