autogentic drainage

Failure analysis of water pump assembly of a certain diesel engine;

某柴油发动机水泵总成失效分析

The paper mainly expatiates the research contents, working principles and technical features on the base of introduction of vacuum magnetic starter with flame-proof bicircuits, thus providing an effective way of safety production to popularize the application of underground water pumps and self-sucked pumps in both medium and small coal mines.

本文在介绍双回路真空磁力起动器主要用途基础上,重点阐述了研究内容、工作原理与技术特点,对中、小煤矿的井下水泵和自吸水泵的推广应用提供了安全生产的有效途径。