中国机械工程
中國機械工程
중국궤계공정
CHINA MECHANICAl ENGINEERING
2012年
1期
22-28
,共7页
高频%电液数字阀%气穴%流量饱和%阀腔%流场
高頻%電液數字閥%氣穴%流量飽和%閥腔%流場
고빈%전액수자벌%기혈%류량포화%벌강%류장
high frequency%electro- hydraulic digital valve%cavitation phenomena%saturated flow rate%valve chamber%flow field
借助FLUENT软件对高频电液数字转阀（简称2D数字阀）阀腔流场进行研究,主要对阀口极端环境时的气穴变化规律进行深入探索,揭示2D数字阀阀芯高速旋转时阀口气泡析出、发育过程及溃灭特性对阀口流量的影响。研究结果表明,气穴现象不仅会造成流量阻塞,而且气泡溃灭引起的压力脉动还会对系统形成强非线性干扰,影响阀口输出波形的精度和阀控液压缸激振系统的稳定性。
藉助FLUENT軟件對高頻電液數字轉閥（簡稱2D數字閥）閥腔流場進行研究,主要對閥口極耑環境時的氣穴變化規律進行深入探索,揭示2D數字閥閥芯高速鏇轉時閥口氣泡析齣、髮育過程及潰滅特性對閥口流量的影響。研究結果錶明,氣穴現象不僅會造成流量阻塞,而且氣泡潰滅引起的壓力脈動還會對繫統形成彊非線性榦擾,影響閥口輸齣波形的精度和閥控液壓缸激振繫統的穩定性。
차조FLUENT연건대고빈전액수자전벌（간칭2D수자벌）벌강류장진행연구,주요대벌구겁단배경시적기혈변화규률진행심입탐색,게시2D수자벌벌심고속선전시벌구기포석출、발육과정급궤멸특성대벌구류량적영향。연구결과표명,기혈현상불부회조성류량조새,이차기포궤멸인기적압력맥동환회대계통형성강비선성간우,영향벌구수출파형적정도화벌공액압항격진계통적은정성。
With the FLUENT software, by studying the flow field in the chambers of 2D digital valve, this paper explored the cavitation variation rule in extreme situations with an attempt to find the effects on valve port flow by bubble precipitating, developing and collapsing during the periodical and high-speed on-offs. The results show that cavitation causes flow rate congestion, and that the pressure fluctuation caused by the bubble collapse brings significant nonlinear impact on the valve controlled cylinder, which reduces accuracy of the valve ports＇ output waveform and output stability of the valve controlled cylinder vibrator.
