润滑与密封
潤滑與密封
윤활여밀봉
LUBRICATION ENGINEERING
2014年
3期
67-70
,共4页
机械密封%泵效环%泵送能力%数值模拟%扬程
機械密封%泵效環%泵送能力%數值模擬%颺程
궤계밀봉%빙효배%빙송능력%수치모의%양정
mechanical seal%pumping ring%pumping capability%numerical simulation%head
利用离心泵理论，对一种机械密封用锥形叶片式泵效环的性能进行理论分析，并利用CFD软件对泵效环的性能进行数值模拟，获得泵效环邻域流场的压力分布，给出泵效环泵送能力的理论分析表达式即扬程表达式，分析泵效环转数和叶片数对其泵送能力的影响。理论分析结果和数值模拟结果基本一致，确认模型的合理性。随着泵效环转数和叶片数的增加，其泵送能力相应增加，但是随着叶片数的增加，空化空蚀现象会更易发生。
利用離心泵理論，對一種機械密封用錐形葉片式泵效環的性能進行理論分析，併利用CFD軟件對泵效環的性能進行數值模擬，穫得泵效環鄰域流場的壓力分佈，給齣泵效環泵送能力的理論分析錶達式即颺程錶達式，分析泵效環轉數和葉片數對其泵送能力的影響。理論分析結果和數值模擬結果基本一緻，確認模型的閤理性。隨著泵效環轉數和葉片數的增加，其泵送能力相應增加，但是隨著葉片數的增加，空化空蝕現象會更易髮生。
이용리심빙이론，대일충궤계밀봉용추형협편식빙효배적성능진행이론분석，병이용CFD연건대빙효배적성능진행수치모의，획득빙효배린역류장적압력분포，급출빙효배빙송능력적이론분석표체식즉양정표체식，분석빙효배전수화협편수대기빙송능력적영향。이론분석결과화수치모의결과기본일치，학인모형적합이성。수착빙효배전수화협편수적증가，기빙송능력상응증가，단시수착협편수적증가，공화공식현상회경역발생。
The performance of the conical blade pumping ring of a mechanical seal was analyzed based on the theory of centrifugal pumps and simulated by using CFD software.The pressure distribution of neighborhood flow field was obtained to determine the pumping capability of the pumping ring.The theoretical analysis expression of pumping capability was giv-en,and the effects of the speed and the number of blades of pumping ring on the pumping capability were analyzed.The re-sult of theoretical analysis was compared with that of numerical simulation,which validated the correctness of this model built.The pumping capability of the pumping ring is appropriately increased with the increase of the speed and the number of blades of pumping ring.But with the increase of the number of blades,the pumping ring is more prone to cavitation.
