Self-priming Vortex Pump Variable Speed Performance and Internal Flow Test
The 25WZ1-12 vortex self-priming pump test prototype was developed. Through the experiment of type and the external characteristics of the variable rotational speed, performance curves, such as q_v-H and q_v-η, were obtained. The curve conversion for q_v-H meets the proportion law of similar theory, but the q_v-NPSH curve conversion does not satisfy the cavitation affinity law for the vortex pump. The flow channel field was measured with 5-hole probe, to gain the distribution of flow static pressure p_s, equivalent v_(re) radial velocity and equivalent circumferential velocity v_(ue) at the various pump rotational speed. By analyze the test data, the relation between the external characteristic and the internal flow was discussed, also the type and location for the cavitations of the vortex pump was presented.
国家科技期刊平台
NSTL
万方数据
维普
