Helical Roots pump has great improvements on the face of stabilizing pressure pulse quality of passing cut sensitivity medium, reducing noises and vibration, avoiding vapor fret etc.
螺旋式罗茨泵在稳定过流剪切敏感介质压力脉动质量，减少噪音、振动，避免气蚀等方面有较大改善。
2
Use of helical gear in gear pump is an effective measure, which can reduce the mechanical voice and flow pulse.
齿轮油泵采用斜齿轮是降低机械噪声和减小流量脉动的一种有效措施。
3
Because of superior performance of helical axial-flow multiphase pump, multiphase boost technology has taken the developing position for liquid-gas boosting technology recently.