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顾桥矿是一个年产在1200万吨以上的现代化矿井,顾桥矿南区做为顾桥矿的新采场,对于完成原煤产量等具有重大意义。顾桥矿南区现有6台Ingersonll Rang(英格索兰)型号为SSR M300-2S-HV高压空压机,担负着南区的生产用风任务。控制系统为合肥万邦自控制作,采用Control Logix5000系列的PLC,使用RSLogix5000进行编程。吐油现象的出现的原因:由于Ingersonll R ang空压机本机没有和高压主电机的保护器(过流及短路等的保护)对接,而控制系统对主机的控制由通讯方式完成,空压机和高压柜之间的连接由控制系统承接。高压柜的南京中德NSP783(V3.0)保护器在检测到二段过流时,经过1S延时作用与接触器跳闸,并给控制系统一个故障脉冲触发信号(40ms),但由于控制系统的巡检周期为2s,控制系统没有及时作用于本机SG控制器停机,空压机低压控制系统仍在运行,造成超冷油从空滤器吐出,对设备安全运转造成隐患。基于这一吐油现象,对高压柜综合保护器和空压机之间做出改进,让高压故障(包括1段过流、2段过流、低电压等)发生时,保护器直接作用于Ingersonll Rang(英格索兰)型号为SSR M300-2S-HV高压空压机的本机的SG控制器,使空压机能够及时可靠的停机,避免吐油,并且确保在空压机高压故障时可靠及时停机。取得了较好的安全技术和经济效果。
Guqiao Mine is a modern mine with an annual output of more than 12 million tons. Guqiao Mine District is a new stope for Guqiao Mine and is of great significance to complete the production of raw coal. Guqiao mine area south of 6 Ingersonll Rang (Ingersoll-Rand) model SSR M300-2S-HV high-pressure air compressor, responsible for the production of the South wind task. Control system for Hefei IMC-made control, the use of ControlLogix5000 series PLC, RSLogix5000 programming. The reason for the appearance of spit oil: As the Ingersonll R ang air compressor machine and the high voltage main motor protector (overcurrent and short circuit protection, such as docking), and the control system of the host control by communication, air pressure The connection between the machine and the high voltage cabinet is taken over by the control system. Nanjing Zhongde NSP783 (V3.0) high-voltage cabinet protector in the detection of two over-current, after 1S delay and contactor trip, and the control system to a fault pulse trigger signal (40ms), but the control system Of the inspection cycle is 2s, the control system does not act on the local SG controller shutdown, air compressor low pressure control system is still running, resulting in ultra-cold oil spit from the air filter, the equipment safe operation of potential problems. Based on this phenomenon of spit oil, make improvements between the high-voltage cabinet integrated protector and the air compressor so that the high-voltage fault (including 1 over-current, 2 over-current, low voltage, etc.) Ingerson Rang Ingersoll Rand Model SGR M300-2S-HV high-pressure air compressor of the machine’s SG controller, the air compressor can be timely and reliable shutdown, to avoid spit oil, and to ensure that the air compressor high-pressure failure Reliable and timely shutdown. Has made a good safety technology and economic results.