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迄今为止的船舶电力推进,就其推进电源而言,大致可分为热机发电(柴油发电机、汽轮发电机或燃气轮发电机)或蓄电池供电两大类。即便是核动力船,也无非是将核反应堆产生的热能,通过热交换器,加热水蒸汽或惰性气体,以使汽轮发电机发出电功率。热机发电用于船舶电力推进,较普遍的方案是柴油机电力推进。 柴油机电力推进中主要采用高、中速柴油机,以减轻重量和体积。如我国自行设计、建造的“东方红”火车渡轮,采用了3台450马力,600转/分的直流柴油发电机组(发电机功率为250千瓦),除供电给2台320干瓦的主推进电动机外,尚可供电给2台185千瓦的侧向推进电动机。运行情况表明,该渡轮不仅可在驾驶室直接操纵4台推进电动机,快速准确地靠离码头,还可减少原动机的总功率。此外如我国的“浦江”号火车渡轮、180方挖蛎壳船、日本的“白凤”号海洋考察船等也都采用柴油机电力推进。
Ship propulsion to date, as far as its propulsion power supply is concerned, can be roughly divided into two major categories: thermal power generation (diesel generator, steam turbine generator or gas turbine generator) or battery power supply. Even a nuclear-powered vessel is nothing more than heating the heat generated by the nuclear reactor through heat exchangers, heating water vapor or inert gas to generate electrical power from the turbine generator. Thermal power generation for ship electric propulsion, the more common program is diesel electric propulsion. Diesel electric propulsion mainly uses high and medium speed diesel engines to reduce weight and volume. For example, our own “Dongfanghong” train ferry, designed and constructed by our country, adopts three 450-horsepower, 600 rpm DC diesel generator sets (generator power is 250 kW), except the main propulsion which supplies power to two 320- Outside the motor, it is still possible to power two 185 kW side-propulsion motors. Operating conditions show that the ferry can not only directly manipulate the four propulsion motor cab in the cab, quickly and accurately away from the terminal, but also reduce the total power of the prime mover. In addition, such as China’s “Pujiang” train ferry, 180-side digging oyster shell ship, Japan’s “Bai Feng” number of marine research vessels are also using diesel power propulsion.