DRAIN LIQUID RELIEF SYSTEM FOR A SUBSEA COMPRESSOR AND A METHOD FOR DRAINING THE SUBSEA COMPRESSOR

摘要

A drain liquid relief system for a subsea compressor is provided. The system includes a suction scrubber a drain storage tank for collecting drain liquid contaminating the compressor flow in the drain storage tank. The system further includes an intermittently pressurizing device and a suction line connected to the bottom of the drain storage tank. The suction scrubber is connected to the compressor suction nozzle and/or a compressor casing drain line, the suction scrubber being further connected, via a first check valve, to the drain storage tank for collecting the drain liquid in the drain storage tank. The intermittently pressurizing device is adapted to intermittently pressurize the drain storage tank to intermittently blow the drain liquid out of the drain storage tank through the suction line.