Test device and method for impulse blowing jet stream included angle and jet stream declination angle

Abstract

The invention discloses a device and a method for testing the pulse blowing jet included angle and the jet offset angle. The test device comprises a pulse valve, a gas bag, a blow pipe provided with a plurality of nozzles, a gas source processor, an air compressor and a pulse controller, wherein a filling port is arranged on the blow pipe; and an image net board is arranged below the blow pipe. The test method comprises: firstly, filling a colorful developing solution into the filling port, releasing air through pulse of the pulse valve, and spraying the colorful developing solution onto the image net board through the nozzles to form a jet image; secondly, measuring the diameter D and the offset t of the image; and thirdly, calculating the jet included angle and the jet offset angle according to the diameter d of the nozzles and the distance h between the nozzles and the image net board, namely through a formula 2arctan((D-d) / 2h) and arctan(t / h). The invention can accurately calculate the jet included angle and the jet offset angle and apply the obtained data to engineering design, makes blown air flow capable of covering the length of the whole filter bag, strengthens the ash removal effect, and prolongs the service life of the filter bag.

Description

Technical field [0001] The invention relates to a pulse injection device, in particular to a testing device and method for pulse injection jet angle and jet deflection angle. Background technique [0002] At present, my country's pulse bag filter has become the mainstream in the development of industrial dust removal. It mainly uses compressed air to pulse clean the filter bag, so the design of the pulse cleaning components is particularly important. The distance from the pulse gas injection pipe to the surface of the flower plate is mainly determined by the jet angle of the nozzle on the injection pipe. There are two main factors affecting the jet angle, one is the size of the pulse air pressure, and the other is the nozzle on the injection pipe. the size of. In engineering design, the distance from the spray pipe to the flower plate surface is generally determined based on experience, but it cannot guarantee that the jet air flow covers the entire length of the filter bag...

AI Technical Summary

Problems solved by technology

In engineering design, the distance from the spray pipe to the flower plate surface is generally determined based on experience, but it cannot guarantee that the spray air flow covers the entire length of the filter bag, resulting in uneven dust removal, and even damage to the filter bag due to the deflection of the air flow.

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