Anti-blocking air intensity measuring equipment

Abstract

The invention relates to anti-blocking air intensity measuring equipment which comprises a differential pressure transmitter, a positive lateral pressure measuring mechanism and a negative lateral pressure measuring mechanism, wherein the positive lateral pressure measuring mechanism and the negative lateral pressure measuring mechanism are respectively and fixedly arranged on two sides of the differential pressure transmitter; the positive lateral pressure measuring mechanism comprises a third pressure equalization tube, a cyclone cylinder, a first pressure equalization tube and a plurality of positive pressurizing tubes which communicate in sequence from top to bottom; the first pressure equalization tube is arranged in an inclined manner; the plurality of the positive pressurizing tubesare uniformly arranged in parallel at the lower end of the first pressure equalization tube; positive sampling holes are formed in an air inlet direction of an air flow in the lower ends of the positive pressurizing tubes; the lateral pressure measuring mechanism comprises a second pressure equalization tube and a negative pressurizing tube which communicate up and down; a negative sampling holewhich is formed in a direction opposite to the air inlet direction of the air flow is formed in the lower end of the negative pressurizing tube; the positive pressure end of the differential pressuretransmitter communicates with the third pressure equalization tube; the negative pressure end of the differential pressure transmitter communicates with the second pressure equalization tube.

Description

technical field [0001] The invention relates to an anti-clogging air volume measuring device, which belongs to the technical field of wind pressure measurement. Background technique [0002] In daily production and life, in order to ensure the normal operation of production and ensure the safety needs of people's lives, it is often necessary to design and install a device for measuring gas pressure on the outside of boilers and containers. The anti-blocking wind pressure sampling device is based on the principle of gas flow. When it is blocked and impacted, the impurities and fine particles contained in the air whose specific gravity is greater than that of the air sink, and the air flowing upward is purified to avoid blocking the pipeline. The obtained purified gas can be accurately measured by the wind pressure gauge, so as to achieve the purpose of anti-blocking wind pressure sampling. The full pressure port and the static pressure port of the conventional air volume mea...

AI Technical Summary

Problems solved by technology

The full pressure port and the static pressure port of the conventional air volume measuring device are inserted into the air flow, and the dust particles carried in the air flow are easily bonded to the pressure tapping port and each pressure tapping port due to impact with the air flow measuring device, flow with the air flow, and frictional static electricity. In the connecting pipe, the air flow measuring device is easy to be blocked after long-term use. This kind of blockage occurs inside the air flow measuring device, which can only be solved by regular blowing with compressed air, which brings a lot of maintenance workload to the thermal engineering department.

Coupled with the changes in the cold and hot states during the start-up and shutdown of the boiler, the water vapor in the airflow and the ash particles in the air volume measurement device are agglomerated, which is difficult to remove

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