英语翻译有关电厂汽轮机的吧,用翻译器翻的就不用麻烦你了,因为机器永远也不能和达人们的大脑相比,呵呵A steam tur

英语翻译
有关电厂汽轮机的吧,用翻译器翻的就不用麻烦你了,因为机器永远也不能和达人们的大脑相比,呵呵
A steam turbine is a mechanical device that extracts thermal energy from pressurized steam and converts it into useful mechanical power (Ricardo,2007).The steam turbine has almost completely replaced the reciprocating engine in power generation,primarily because of its greater thermal efficiency and higher power-to-weight ratio.Even,combined cycle gas turbine will design and implement to detect on-line and diagnose anomalies
as soon as possible in the dynamic evolution of the behavior of a power plant (Arranz,Cruz,Sanz-Bobi,Ruiz,& Coutino,2008).Also,because the turbine generates rotary motion rather than requiring a linkage mechanism to convert reciprocating to rotary motion,it is particularly suited for driving an electrical generator.Approximately 86% of all electricity in the world is generated by steam turbines.The steam turbine achieves thermodynamic efficiency by using multiple stages of steam power capture.A governor is essential for controlling turbines,which must be run up gradually to prevent damage.Some applications,such as electricity generation,require precise speed control.Most systems include a mechanism for overspeed trip when excessive acceleration of the turbine rotor closes the nozzle valves controlling the flow of steam to the turbine.If this fails,the turbine may continue accelerating until it is destroyed,often spectacularly (Akturk & Gurel,2007).
Turbines are expensive and require precision manufacturing methods as well as high quality materials.Electrical power stations use large steam turbines driving electric generators to produce most of the electricity throughout the world.These centralized stations include fossil fuel,nuclear,geothermal,solar thermal electric and biomass power plants.The turbines used for electric power generation are often directly coupled to their generators.Generators must rotate at constant synchronous speeds according to the frequency of the electric power system.The most common speeds are 3000 revolutions per minute for 50 Hz systems and 3600 revolutions per minute for 60 Hz systems.Most large nuclear sets rotate at half those speeds and use 4-pole rather than the more common 2-pole generators.

蒸汽涡轮机是将加压蒸气热能转换成有用机械能的一种机械装置(Ricardo,2007)
在发电上蒸汽涡轮机基乎完全取代往复式引擎 主要是较大的热效率以及较高的动力重量比 甚至 再不久的将来发电厂的动力改革作为可以合并循环气体涡轮机的设计以及实时诊断异常装置(Arranz,Cruz,Sanz-Bobi,Ruiz,& Coutino,2008)
除此之外 因为比起往复式引擎需要连结机械装置 将往复运动变成转动 涡轮发电机的旋转运动 特别合适于驱动发电机 全世界大约有86%使用蒸汽涡轮机发电 蒸汽涡轮机使用多重阶段捕获蒸气能达到热动力学上效率 涡轮机必须由调节器控制 能够渐进提升防止损坏 一些设备像是发电机组 需要精准速度控制
最重要的过转速错误的机制 当涡轮机转子出现过度加速时喷气调节阀将会控制涡轮机蒸气流量 如果调节失败 涡轮机也许会继续加速直到损坏 通常很惊人(Akturk & Gurel,2007)
涡轮机不但昂贵而且需要精密的制造技术以及极高质量的材料 全世界发电厂所生产的电力大多来自大型蒸汽涡轮机驱动发电机 大多集中在石化燃料发电厂 核能电厂 地热电厂 太阳热能电厂 以及 生质燃料电厂 涡轮机通常直接连结发电机来产生电力 发电机必须依照电力系统频率保持固定的同步转速 最常使用的是每分钟3000转用于50 Hz系统 每分钟3600转用于60 Hz系统 许多核能电厂采用上述的一半转数以及4极发电机 而不是常见的2极发电机