CAJ | 학술논문

为改善射流式喷灌泵的性能，提高泵的效率。本文设计了一种有2个出口的不对称导流器，可以加快泵内的气液混合与分离。通过正交试验和数值模拟方法，得到叶轮与导流器中截面多方案的空气体积分布云图，分析其气液混合与流动规律，研究导流器出口1角度θ、导流器出口2角度α和基圆直径D3对喷灌泵性能的影响，并对数值计算结果进行极差分析。研究结果得出方案4的导流器几何参数较为合理，并进行样机试验。样机试验证明：在额定工况下，泵的效率为68．86％，比国家标准值提高7．6％，达到设计要求。
위개선사류식분관빙적성능，제고빙적효솔。본문설계료일충유2개출구적불대칭도류기，가이가쾌빙내적기액혼합여분리。통과정교시험화수치모의방법，득도협륜여도류기중절면다방안적공기체적분포운도，분석기기액혼합여류동규률，연구도류기출구1각도θ、도류기출구2각도α화기원직경D3대분관빙성능적영향，병대수치계산결과진행겁차분석。연구결과득출방안4적도류기궤하삼수교위합리，병진행양궤시험。양궤시험증명：재액정공황하，빙적효솔위68．86％，비국가표준치제고7．6％，체도설계요구。
To improve the performance of flow-ejecting spray pump and increase its efficiency , this paper designed an asymmet-ric outlet that has two outlets to speed up gas-liquid mixing and separation .By orthogonal experiment and numerical simulation methods , the several distribution of air volumes in the impeller and diffuser mid-section been obtained .The gas-liquid mixing and flow pattern were analyzed;the 1st outlet angle αof diffuser, 2nd outlet angle θof diffuser and base diameter D3 impacted on pump performance were discussed , and analyzed the range for numerical results .The results show that the 4th solution of diffuser is relatively rational, and Prototype testing can be performed .Testing report indicates that pump efficiency is 68.86%at the ra-ted conditions, increased by 7.6%than the national standard , to meet the design requirements .