8字形盘密封螺旋泵啮合特性分析  

Analysis of Meshing Characteristics of 8-Shaped Disc Seal Screw Pump

作　　者：史后威 王增丽[1] 王宗明[1] 李彦[1] 冯全科[2] SHI Houwei;WANG Zengli;WANG Zongming;LI Yan;FENG Quanke(New Energy College,China University of Petroleum(East China),Qingdao,Shandong 266580,China;School of Energy and Power engineering,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]中国石油大学(华东)新能源学院,山东青岛266580 [2]西安交通大学能源与动力工程学院,西安710049

出　　处：《西安交通大学学报》2021年第9期161-167,共7页Journal of Xi'an Jiaotong University

基　　金：国家重点研发计划资助项目(2020YFB2010002);国家自然科学基金资助项目(51706247);中央高校基本科研业务费专项资金资助项目(20CX02312A)。

摘　　要：针对传统的圆盘密封单螺杆泵排量小、振动大、不能实现完全的自驱动等问题,创新性地提出了一种新型的8字形盘密封螺旋泵;基于空间啮合原理建立了8字形密封盘-螺杆转子啮合副的型面方程,研究了8字形盘任意圆心角位置处的啮合特性,并分析了啮合副的结构参数对啮合特性的影响。研究结果表明:在8字形盘转动过程中,不同圆心角截面处啮合角的上下浮动范围不同,圆心角β越接近0,啮合点的波动程度越剧烈;当圆心角β∈(0,π/2)时,啮合部位主要集中于中性面下方,当圆心角β∈(-π/2,0)时,啮合部位主要集中于中性面上方;8字形盘大圆半径对啮合角变化程度的影响最大,中心距及8字形盘边缘倒角半径的影响较小。上述研究结果对8字形盘密封螺旋泵的进一步研发设计具有一定的指导意义。Aiming at the problems that the displacement is small and the self-driving is difficult to realize for traditional disc-seal single screw pump(DSSP),this paper proposes a new type of 8-shaped disc seal screw pump,and the profile equation of the screw rotor-disc seal is established based on the spatial meshing theory.The profile equation is used to study the meshing characteristics of the 8-shaped disc seal,and the influence of structural parameters of the meshing pairs on meshing characteristics is analyzed.The results indicate that the fluctuation degree of the meshing angle is different at different central angle sections.The fluctuation degree of the meshing angle is the most severe when the central angleβis close to 0.The meshing parts are mainly concentrated below the neutral surface whenβ∈(0,π/2),and above the neutral surface whenβ∈(-π/2,0).The radius of the big circle of the 8-shaped disc seal has the greatest influence on the variation degree of the meshing angle,while the center distance and the chamfering radius of the 8-shaped disc seal have little influence.This research may have certain guiding significance for the design and further development of 8-shaped disc seal screw pump.

关 键 词：8字形盘密封螺旋泵 啮合副 啮合特性 

分 类 号：TN23[电子电信—物理电子学]