| 摘要 |
PURPOSE:To permit to save power for compression by a method wherein gear pumps are provided in multisteps and gas is compressed under flowing it reversely to take out a pressure near a load from an arbitrary stage. CONSTITUTION:A pressure in a point B arrives at the point K by the reverse flow compression, subsequently, the pressure in the point K arrives at the point L by first stage intercooler 15, next, the pressure in the point L arrives at the point M by the reverse flow compression of the second stage, next, the same in the point M arrives at the point N by the second stage intercooler 18, subsequently, the pressure in the point N arrives at the point 0 by the third stage reverse flow compression. Thereafter, the pressure in the point 0 arrives at the point C' by an aftercooler. When the load is decreased and a discharging pressure P3 is reduced to the same P2, the pressure in the point N arrives at the point R directly by opening a bypass valve 21 and, thus, the energy may be saved. |
