The invention discloses a screw power propulsion system based on Brayton-Rankine combined waste heat circulation. The screw power propulsion system comprises a gas turbine, a speed reducer, a shaft system, a high-pressure screw expander, a low-pressure screw expander, a high-temperature generator and a low-temperature generator, wherein the gas turbine, the high-pressure screw expander and the low-pressure screw expander are connected with three input shafts of the speed reducer respectively, the shaft system is connected with an output shaft of the speed reducer, the high-temperature generator and the low-temperature generator are sequentially arranged in a smoke exhaust trunk of the gas turbine in the smoke plume flowing direction, the high-temperature generator is connected with the high-pressure screw expander through one pipeline to form a Brayton circulation system, and the low-pressure screw expander is connected with the low-temperature generator through one pipeline to form a Rankine circulation system. According to the screw power propulsion system provided by the invention, integrated optimization is performed by combining the advantages of two kinds of thermodynamic cycles, and exhaust waste heat of the gas turbine can be more fully utilized; and the screw power propulsion system can effectively reduce the energy consumption loss of a ship and improve the heat efficiency of a real ship power system.
本发明公开了一种基于布雷顿‑朗肯联合余热循环的螺杆动力推进系统,包括燃气轮机、减速器、轴系、高压螺杆膨胀机、低压螺杆膨胀机、高温发生器和低温发生器,燃气轮机、高压螺杆膨胀机和低压螺杆膨胀机分别与减速器的三个输入轴连接,轴系与减速器的输出轴连接,燃气轮机的排烟围井中沿着烟羽流动方向依次设置高温发生器和低温发生器,高温发生器通过管道与高压螺杆膨胀机连接形成布雷顿循环系统,低压螺杆膨胀机通过管道与低温发生器连接形成朗肯循环系统。本发明提出的螺杆动力推进系统,结合两类热力循环的优点进行集成优化,能够更加充分利用燃气轮机的排气余热。本螺杆动力推进系统可有效地降低船舶能耗损失,提高实船动力系统的热效率。
Screw power propulsion system based on Brayton-Rankine combined waste heat circulation
基于布雷顿-朗肯联合余热循环的螺杆动力推进系统
2021-11-19
Patent
Electronic Resource
Chinese
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