压缩机组停机保压控制逻辑优化

Optimization of the control logic for pressure maintenance by shut-down of compressor units

结合中亚天然气管道WKC1首站2台SOLAR TITAN 130/C453型燃气轮机/离心式压缩机组的轴封形式、停机保压控制策略及存在风险,对停机保压程序、密封气供应程序和联动设备进行讨论、提出停机保压程序优化和改进策略,在未增加任何额外投资的情况下,有效解决了首站备用SOLAR机组保压时间短、启动速度慢、附属设备磨损快及天然气放空能耗大等问题。优化改进后的系统有效缩短了备用机组的启机时间,保障了压缩机组的正常运行,降低了对上游土库曼斯坦气源方的负面影响,以及停机状态下的放空损失及生产能耗。

In consideration of the shaft seal form and the strategies and risks of the pressure maintenance by shut-down of two SOLAR TITAN 130/C453 gas turbine/centrifugal compressor units in WKC1 Initial Compressor Station of the Trans- Asia Gas Pipeline, this paper reviews the program of compressor unit shut-down for pressure maintenance, the program of sealed gas supply and the interlocking equipment, and presents the optimization strategies for pressure maintenance by shut-down of the compressor units. Basec~ on the strategies, the problems of short pressure maintenance, slow starting, fast wear and tear of the accessory equipment and large energy consumption of natural gas venting encountered in the standby SOLAR are solved effectively without any additional investment. The optimized system reduces the starting time of the standby unit to ensure its normal operation, mitigates the negative impacts on the upstream gas sources in Turkmenistan, and minimizes the energy loss when the compressor units are shut down and the energy consumption during production. （1 Table, 5 Figures, 4 References）