薄煤层下离散变量型乳化液泵特性分析  

Characteristic Analysis of Discrete Variable Emulsion Pump under Thin Coal Layer

作　　者：刘银报 赵仁亮 LIU Yinbao;ZHAO Renliang(Advanced Equipment R&D Center,CHN Energy Shendong Coal Croup Co.,Ltd.,Yulin Shaanxi 719000,China;Wuxi Weishun Coal Mining Machinery Co.,Ltd.,Wuxi Jiangsu 214000,China)

机构地区：[1]神东煤炭分公司高端设备研发中心,陕西榆林719000 [2]无锡威顺煤矿机械有限公司,江苏无锡214000

出　　处：《机床与液压》2024年第18期177-181,共5页Machine Tool & Hydraulics

摘　　要：现有薄煤层大流量的乳化液泵系统常需按峰值工作功率配置乳化液泵,但不同工况系统需求的功率差别较大,小负载工况系统的能量损耗较大。为减少系统的能量损耗,提出离散变量型乳化液泵系统,设计相同额定流量和不同额定流量2种方案,将单台大功率乳化液泵分为4台小功率泵,3台工作1台备用,根据不同的工况和动作,通过控制卸荷阀的开闭输出多级功率,实现系统供需功率匹配;并且当其中任意一台泵出现故障时,可采用备用泵提供流量,提高系统的冗余度和容错度。在相同工况下,对原系统和离散变量型乳化液泵系统进行仿真分析。结果表明:所提系统可显著降低整机的峰值功率和能量消耗,单个运行工况下可减少系统能量消耗47.6%;所提系统可逐步满足智能化综采工作面大流量、高能效、高冗余的供液需求。The existing emulsion pump system with large flow rate in thin coal seams often requires the configuration of emulsion pumps according to peak working power,but the power requirements of different operating conditions vary greatly,and the energy loss of small load operating conditions is relatively large.In order to reduce energy loss in the system,a discrete variable emulsion pump system was proposed,two schemes were designed:the same rated flow rate and different rated flow rates.A single high-power emulsion pump was divided into four low-power pumps,with three working and one standby.According to different operating conditions and actions,the multi-level flow rate was output by controlling the opening and closing of the unloading valve to achieve power matching between supply and demand in the system;and when any of the pump was failed,a standby pump could be used to provide flow,improving the redundancy and fault tolerance of the system.Under the same working conditions,simulation analysis was conducted on the original system and discrete variable emulsion pump system.The results show that the proposed system can significantly reduce the peak power and energy consumption of the entire machine,the system energy consumption can be reduced by 47.6%under a single operating condition.The proposed system can gradually meet the liquid supply requirements of intelligent fully mechanized mining faces with high flow rate,high energy efficiency and high redundancy.

关 键 词：离散变量型乳化液泵 数字泵 冗余 节能 

分 类 号：TH137.52[机械工程—机械制造及自动化]