罗茨泵困油现象机理剖析与缓解措施验证

李玉龙,宋安然,宋陆昊,刘天涯

Mechanism analysis and relief measure verification of trapped-oil phenomenon in Roots pumps

Yulong LI,Anran SONG,Luhao SONG,Tianya LIU

表4 有/无卸荷槽渐开线罗茨泵的性能对比

Table 4 Performance comparison of involute Roots pumps with/without relief grooves

参数 无卸荷槽 有卸荷槽 变化率/% p/Pa 2 062~2.16×106 20 461~1.52×106 -29.5① ∆pmax/% 113.3 50.4 -55.5 ∆pmin/% 98.0 79.8 -18.6 Qₐᵥₑ/(m3/s) 0.010 28 0.010 16 -1.2