流体机械
流體機械
류체궤계
FLUID MACHINERY
2014年
4期
28-31,36
,共5页
张贤明%杨旭%陈栋%王立存%张国进%李福领
張賢明%楊旭%陳棟%王立存%張國進%李福領
장현명%양욱%진동%왕립존%장국진%리복령
真空泵%抽气速度%结构参数
真空泵%抽氣速度%結構參數
진공빙%추기속도%결구삼수
scroll vacuum pump%pumping speed%structural parameters
真空度是影响滤油机真空分离系统工作效率的关键技术指标,以往的真空滤油机普遍存在极限真空度不足的现象。涡旋真空泵结构简单,运行稳定,且能在较宽的压力范围内工作,将涡旋真空泵作为前级泵应用到滤油机真空机组中,能为真空机组的主泵创造必要的预备真空条件,从而改善滤油机的整机性能。涡旋真空泵极限真空度受其抽气速度的影响,与泵体自身结构参数密切相关。选取合理的泵体结构参数,设计相应抽气速度的真空泵至关重要。基于涡旋真空泵的工作原理,建立理论抽速模型,通过计算封闭月牙形工作腔的容积,推导出理论抽速计算公式,对于选取泵体最优结构参数具有重要的理论指导意义和工程实用价值。
真空度是影響濾油機真空分離繫統工作效率的關鍵技術指標,以往的真空濾油機普遍存在極限真空度不足的現象。渦鏇真空泵結構簡單,運行穩定,且能在較寬的壓力範圍內工作,將渦鏇真空泵作為前級泵應用到濾油機真空機組中,能為真空機組的主泵創造必要的預備真空條件,從而改善濾油機的整機性能。渦鏇真空泵極限真空度受其抽氣速度的影響,與泵體自身結構參數密切相關。選取閤理的泵體結構參數,設計相應抽氣速度的真空泵至關重要。基于渦鏇真空泵的工作原理,建立理論抽速模型,通過計算封閉月牙形工作腔的容積,推導齣理論抽速計算公式,對于選取泵體最優結構參數具有重要的理論指導意義和工程實用價值。
진공도시영향려유궤진공분리계통공작효솔적관건기술지표,이왕적진공려유궤보편존재겁한진공도불족적현상。와선진공빙결구간단,운행은정,차능재교관적압력범위내공작,장와선진공빙작위전급빙응용도려유궤진공궤조중,능위진공궤조적주빙창조필요적예비진공조건,종이개선려유궤적정궤성능。와선진공빙겁한진공도수기추기속도적영향,여빙체자신결구삼수밀절상관。선취합리적빙체결구삼수,설계상응추기속도적진공빙지관중요。기우와선진공빙적공작원리,건립이론추속모형,통과계산봉폐월아형공작강적용적,추도출이론추속계산공식,대우선취빙체최우결구삼수구유중요적이론지도의의화공정실용개치。
The key technical indicator of the efficiency of separation system in vacuum oil-filter is vacuum degree,but limitting vacuum degree is general insufficient in previous vacuum oil-filters.Scroll vacuum pump has the advantages of simple structure, smooth operation and wide workiing pressure range,its application as a fore pump to the oil filter vacuum unit can greatly improve the efficiency of the system by creating the necessary vacuum conditions.Limiting vacuum degree is under the influence of air-ex-traction rate,which closely related to the structural parameters of the pump body.So it is essential to select rational structure pa-rameters in order to design vacuum pump corresponded to air-extraction rate.This paper establishs the theoretical suction model based on operating principle of scroll vacuum pump ,derives the theoretical formula of suction rate by computing the volume of crescent-shaped working chamber,as a result,it has important theory meaning and practical value in selecting optimal structure parameters for pump body designing.