【摘要】 针对工程实践对乳化液泵以及多泵并联泵站系统提出的按需供液这一技术需求，以BRW125/31.5C型乳化液泵为研究对象，详细介绍其配流原理以及以此为基础的数字式流量调控方法，对该泵的瞬时排出流量进行量纲一化处理，基于此得到数字式配流的流量公式及整泵出口的流量脉动率公式，并以出口额定流量的95%为按需供液的目标进行理论与仿真分析。结果表明：数字式配流的执行机构动磁式电磁铁的动作区间为0～π/3;数字式配流对整泵出口流量的调控区间为原流量的77.9%～100%,对于工程实践提出的更大范围的流量调控需求，可通过结合文中所提数字式流量调控方法与基于变频技术的传统方法实现；当整泵出口流量在数字式配流的调控区间内需达到某一目标流量时，动磁式电磁铁动作数量越多，动作角度越小，整泵出口的流量脉动率越小。更多还原

【Abstract】 In response to the technical requirement of on-demand liquid supply for emulsion pumps and multi pump parallel pumping station systems proposed in engineering practice, the BRW125/31.5C emulsion pump was taken as the research object, the flow distribution principle and the digital flow control method based on it was introduced in detail, the instantaneous discharge flow rate of the pump was treated dimensionlessly, the flow formula of digital distribution and the flow pulsation rate formula of the entire pump outlet were given.Theoretical and simulation analysis were conducted with the goal of 95% of the rated outlet flow rate as the on-demand liquid supply.The results show that the action range of the dynamic magnetic electromagnet of the digital distribution method is from 0 to π/3,the regulation range of digital flow distribution on the outlet flow of the entire pump is from 77.9% to 100% of the original flow.For the larger range requirements of flow regulation put forward by engineering practice, it can be realized by combining the proposed digital flow regulation method with the traditional method based on frequency conversion technology.When the outlet flow of the entire pump needs to reach a certain target flow rate within the control range of digital distribution, the more the number of dynamic magnetic electromagnets actions, the smaller the action angle is, the smaller the pulsation rate of the pump outlet flow is.更多还原