Research on the Improvement of Technology of Low Pressure Loss and Wide Range Swirlmeter

Abstract

This paper mainly introduces the technical parameters and the structure of low pressure loss and wide range swirlmeter. We redesigned the vortex generator of swirlmeter and changed the traditional spiral blade to linear blade. The included angle between the blade and the axis was reduced from 60 degrees to 30 degrees, which can increase the flow area and reduce the pressure loss. We converted the blade from stainless steel to the shape of isometric changed curve, and the frequency detection sensor is designed to four piezoelectric crystal sheet, the pressure loss is lower than that of spiral vortex generator. The test results show that the pressure loss of improved swirlmeter is decreased and the lower limit of measurement is reduced.

Experimental and numerical study on swirlmeter with different helix angles of swirler

“…The results show that the fluctuation frequency of internal pressure has a linear response to flow rate; the smaller the cone angle of the swirlers are, the larger the pressure loss is. The research on swirler blades by Xie et al (2014) illustrated that the swirlmeter with linear-blade swirler has less pressure loss and a wider range of application. Chen et al (2018) studied the influence of the swirlmeter structure with different divergent and convergent angles, and with different diameters and length of throats on the inner flow features of swirlmeter.…”