本文選題：電主軸 + 軸心冷卻��； 參考：《西安交通大學(xué)學(xué)報(bào)》2017年07期

【摘要】：為了加強(qiáng)電主軸軸心冷卻、減小電主軸的熱變形,以150SD型磨削電主軸轉(zhuǎn)子為對象,采用單環(huán)路熱虹吸管來冷卻主軸軸心,利用環(huán)路熱虹吸管無需外部動(dòng)力及傳熱效率極高的特征,從原理上避免了"動(dòng)密封"問題對電主軸軸心冷卻的困擾。對高離心力作用下單環(huán)路熱虹吸管內(nèi)傳熱工質(zhì)的流動(dòng)及傳熱狀態(tài)進(jìn)行了理論分析;以正戊烷為工質(zhì),對適用于該主軸軸心冷卻尺寸的環(huán)路熱虹吸管的傳熱特性進(jìn)行了實(shí)驗(yàn)研究,并對其應(yīng)用于電主軸軸心冷卻的實(shí)際效果進(jìn)行了預(yù)測。結(jié)果顯示:在文中的實(shí)驗(yàn)工況下,單環(huán)路熱虹吸管的運(yùn)行溫度穩(wěn)定,其傳熱性能在充液率為60%左右時(shí)達(dá)到最佳,熱阻僅為0.57℃/W;當(dāng)采用4根單環(huán)路熱虹吸管冷卻結(jié)構(gòu)時(shí),150SD型磨削電主軸轉(zhuǎn)子的最大溫升為28.5℃,且這一溫升數(shù)值隨著轉(zhuǎn)速的增加而繼續(xù)減小,表明單環(huán)路熱虹吸管在電主軸軸心冷卻方面具有良好的應(yīng)用效果。
[Abstract]:In order to strengthen the cooling of the spindle axis and reduce the thermal deformation of the motorized spindle, a single loop thermosyphon tube was used to cool the spindle axis center, taking the 150SD grinding motorized spindle rotor as the object. Based on the characteristics that the loop thermosyphon does not require external power and high heat transfer efficiency, the problem of "dynamic seal" is avoided from the problem of axis cooling of the motorized spindle in principle. The flow and heat transfer state of heat transfer working fluid in a single loop thermosyphon tube under high centrifugal force is theoretically analyzed, and the heat transfer characteristics of the loop thermosyphon tube suitable for the axial cooling size of the spindle are studied experimentally with n-pentane as the working medium. The actual effect of its application in shaft cooling of motorized spindle is forecasted. The results show that the operating temperature of the single loop thermosyphon is stable and the heat transfer performance is optimal when the liquid filling rate is about 60%. The thermal resistance is only 0.57 鈩，

本文編號(hào)：2004690