日用电器
日用電器
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ELECTRICAL APPLIANCES
2015年
7期
83-85
,共3页
压缩机%滑动轴承%轴承—转子系统%结构参数%临界转速
壓縮機%滑動軸承%軸承—轉子繫統%結構參數%臨界轉速
압축궤%활동축승%축승—전자계통%결구삼수%림계전속
compressor%journal bearing%bearing-rotor system%structural parameter%critical speed
以离心式压缩机三油楔固定瓦滑动轴承—转子系统为研究对象,通过DyRoBe'S软件计算分析,获得轴承结构参数(宽径比、相对间隙、预载荷)对转子系统临界转速的影响规律.结果表明:随着预载荷的增加,转子临界转速先增加,再减小;随着轴承宽径比的增大、相对间隙的减小,转子的临界转速增大.在所有参数中,相对间隙的影响最大.
以離心式壓縮機三油楔固定瓦滑動軸承—轉子繫統為研究對象,通過DyRoBe'S軟件計算分析,穫得軸承結構參數(寬徑比、相對間隙、預載荷)對轉子繫統臨界轉速的影響規律.結果錶明:隨著預載荷的增加,轉子臨界轉速先增加,再減小;隨著軸承寬徑比的增大、相對間隙的減小,轉子的臨界轉速增大.在所有參數中,相對間隙的影響最大.
이리심식압축궤삼유설고정와활동축승—전자계통위연구대상,통과DyRoBe'S연건계산분석,획득축승결구삼수(관경비、상대간극、예재하)대전자계통림계전속적영향규률.결과표명:수착예재하적증가,전자림계전속선증가,재감소;수착축승관경비적증대、상대간극적감소,전자적림계전속증대.재소유삼수중,상대간극적영향최대.
Taking the three-fixing-lobe bearing rotor system of centrifugal compressor as the research subject; and based on the DyRoBe'S software calculation analysis, we get the effect and rules of critical speed of rotor system ac-cording to the change of the structural parameter such as length-diameter ratio, relative clearance ratio and preload coefficient of the journal bearing. The results show that with the preload coefficient increasing, the rotor critical speed increases first, and then decreases; with the length-diameter ratio increasing and relative clearance ratio decreasing, the rotor critical speed increases. In all of these parameters, the maximun influence on which is relative clearance ratio.
