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高中压合缸布置的特点?
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高中压合缸布置的特点?
时间:2021-12-28 03:11
关键词:
汽机巡检员考试
危货押运员
答案解析
<p> 采用高中压缸合缸布置,进汽部分都集中在汽缸的中段,双层缸部分又使汽缸温度分布较均匀,热应力降低,因温差过大而造成汽缸变形的可能性减小,同时,因前后两端汽封都处于高、中压排汽部位,故其所承受应力、温度都降低,可使汽封漏汽量减少,而轴承的工作温度也得以降低,改善工作条件。采用反向布置的通流部分可使高、中压转子上的轴向推力得到平衡。因此推力轴承的负荷减小。结构尺寸也得以减小,但是合缸后的汽缸形状复杂,转子和汽缸的尺寸相对单缸而言较大。管道布置较为困难。</p>
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