国产DG270-140C型给水泵转子改造  

Rennovation of Rotors of Domestic Type DG270140C Feed Water Pumps

作　　者：赖海城[1] 岳海生[1] 吴振兵[1] 王兴国[2] 

机构地区：[1]河北马头发电有限责任公司,河北邯郸056044 [2]河北省电力研究院,河北石家庄050021

出　　处：《河北电力技术》2005年第2期40-42,共3页Hebei Electric Power

摘　　要：DG270 140C型给水泵泵轴与叶轮为间隙配合,转子刚度低,造成泵组在不到一个大修周期便出现轴瓦振动超标,同时由平衡盘后的轴套承受轴向推力,轴套摩擦后易变形,造成平衡盘平衡轴向推力作用失效。转子热装改造及平衡盘增设螺母后可增强转子刚度,提高设备安全等级。For type DG270140C feed pumps, the shaft and impeller are clearancefitted and having low rotor rigidity, which leads to the pumping unit vibrates in excess of standard in less than an overhaul cycle. Moreover, the shaft sleeve behind balancing disk bears thrust, so the shaft sleeve can easily be deformed by friction, which causes that it can not play the thrust balancing role. By shrinkfit of rotor and adding nuts to the balancing disk, the rigidity of rotor is improved, the safety degree of this equipment upgraded.

关 键 词：给水泵 振动 转子 热装 

分 类 号：TK223.52[动力工程及工程热物理—动力机械及工程]