Measuring instrument for measuring content of residual pulverized coal in pulverized coal tank

Abstract

The invention discloses a measuring instrument for measuring the content of residual pulverized coal in a pulverized coal tank. The measuring instrument comprises a pulverized coal box, a pulverized coal cavity is formed in the pulverized coal box, and an air pressure mechanism, a hammer head mechanism, a feedback mechanism, a detection mechanism, a power mechanism, an anti-sinking mechanism and a switching mechanism are arranged in the pulverized coal cavity. According to the measuring instrument, a mature gravity hammer head type detection mode is used, and an air pressure balance mode is also used, so that the detected pressure can be kept consistent when a hammer head falls down every time, the position is switched when the hammer head is lifted, and a relatively accurate numerical value can be obtained after multiple times of detection on the uneven pulverized coal surface. When pulverized coal is buried in the upper side of the hammer head, the pulverized coal can be timely detected and dragged out to prevent influence on subsequent detection, meanwhile, automation of the treatment process is achieved, the detection efficiency is greatly improved, and labor force is saved.

Description

Technical field[0001]The present invention relates to a measuring instrument for measuring the remaining pulverized coal content of the pulverin tank, mainly involving the field of pulverized coal detection.Background technique[0002]Coal is a coal having a particle size of less than zero 5 mm, which is the most commonly used adapter in cast iron sand. In recent years, the coal-powered substances and clays have been used abroad to supply the market.[0003]Cast iron is added to a coal sand in wet sand, prevent the surface of the casting surface, improve the surface finish of the casting, and reduce the sand defect, improve the collapse function of the sand, and effectively prevent the production of the skin. The air is a circular vortex burner, air is not preheated.[0004]At present, the level measurement of the power plant's coal powder warehouse and the gray library generally uses the ultrasonic measuring instrument. During the measurement process, due to the upper coal or coal ash, t...

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Problems solved by technology

[0004] At present, the material level measurement of the pulverized coal bin and ash warehouse of the power plant is generally measured by an ultrasonic measuring instrument. Uncertainty, resulting in inaccurate measurement of the material level, unable to measure the real material level

However, when the heavy hammer type mechanical material level measuring instrument used in the past is used to measure the material level of the coal powder bin and the ash warehouse, because the fineness of the coal powder or coal ash is very small, the weight can directly fall into the coal powder bin And the bottom of the ash reservoir, the material level cannot be measured;

[0005] When the traditional measuring device is covered by coal powder, the accuracy will be greatly reduced, and it is easy to cause the hammer head to be difficult to pull back, and the operation process is time-consuming, laborious, inefficient, and difficult to realize automation. In view of the above shortcomings, The present invention has been improved

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