| 摘要 |
PCT No. PCT/GB86/00156 Sec. 371 Date Jan. 20, 1987 Sec. 102(e) Date Jan. 20, 1987 PCT Filed Mar. 18, 1986 PCT Pub. No. WO86/05557 PCT Pub. Date Sep. 25, 1986.A pump or compressor unit (1) suited particularly for mixed phase fluids, e.g. mixed gas and oil, has a multistage axial flow compressor device with contra-rotating vanes. An upstream mixer device (10) and a downstream centrifugal impeller device (32) can each be driven by the compressor device (21, 26, 27, 29), which may be shaped to provide a flow passage of decreasing cross-section in the flow direction. The compressor drives may be supplied by axially adjacent electric motors (24, 25) which may surround rotating sleeves (21) carrying the compressor vanes. A fluid can be circulated through the unit, e.g. for electrical insulation, and may be leaked into the pump fluid through seals, when it may contain a corrosion inhibiting agent. The unit may be arranged to be movable along a pipeline under fluid pressure to engage power supply contacts at a predetermined location. |
