一、概况洗煤厂的生产特点是加工和运输同时进行,原料从原煤贮煤仓出来经过多环节的运输与加工,然后装进精煤仓就完成了加工运输过程了。所以洗煤厂的生产设备的控制实际上是开关量的链控,是带条件联锁工艺流程集中链控,与工艺流程有关的设备都应纳入集控,根据这一特点,控制系统应具有四种功能:①顺流程起车、②逆流程起车、③顺流程停车、④事故情况下可逆流程停车,从而快速切断料源、制止事故 I. Overview Coal washing plant’s production is characterized by processing and transportation at the same time, the raw coal from the coal storage out of many parts of the transport and processing, and then into the refined coal warehouse to complete the processing and transportation process. Therefore, the control of coal washing plant production equipment is actually the switch of the chain control, is a conditional chain of interlocking process control, and process-related equipment should be included in the centralized control, according to this feature, the control system should have four Kinds of functions: ① smooth start-up process, ② reverse process start-up, ③ stop the process, ④ reversible flow in the case of accident parking, which quickly cut off the source, to stop the accident