Two Dimensional Numerical Simulation and Experimental Verification Flow Characteristics of an Involute Spur Gear Pump

漸開線正齒輪泵之二維流場數值模擬與實驗驗證

張財壽(Tsai-Shou Chang) ； 王俊捷(Jyun-Jie Wang) ； 張信良(Shinn-Liang Chang)

《中國機械工程學刊》 43卷5期 (2022/10) Pp. 453-461

摘要

Gear pumps are popularly applied in industry, so, there are many researches published in the past years. However, there are few numerical simulations on the influence of contact point for outlet mass flow rate. In recent years, it is pointed out that the contact point must be considered in numerical simulation for cases whose outlet pressure is high, because the outlet flow rate of gear pump is significantly changed. In this study, a two dimensional numerical and the associated experimental study were conducted to explore the effect of contact point on the characteristics of an involute spur gear pump. Besides, the relationships of the displacement efficiency, the rotation speed, and the pressure of outlet of a gear pumps are investigated. The range of the above mentioned parameters are numerically and experimentally investigated. The experiments showed good match with the analysis results proposed in this paper.

關鍵字

Gear Pumps ； Involute Gear ； FEA ； Efficiency Analysis

並列摘要

齒輪泵應用範圍相當廣泛，因而以往有許多的研究進行相關的探討，但鮮少考慮到嚙合點閉合對於流率之影響。近幾年才開始有研究指出，出口壓力大時之流場需考慮嚙合點作用，該作用直接影響數值模擬之出口流率。本研究在此前提下，針對漸開線正齒輪泵之二維流場特徵進行研究與驗證。本研究亦搭配齒輪泵測試機台，透過改變轉數、出口壓力，測量實際輸出容積，並將模擬與實驗結果相互比較、驗證，實驗結果顯示與理論分析的結果趨勢是一致的。