基于单质点法的大倾角螺旋输砂器理论建模与分析  

Theoretical Modeling and Analysis of Large Angle Spiral Sand Conveyor Based on Single Particle Method

作　　者：贾宏禹[1] 周思柱[1] 孙文斌[1] 秦伦 吕志鹏[1] 

机构地区：[1]长江大学机械工程学院 [2]中石化石油工程机械有限公司第四机械厂

出　　处：《石油机械》2015年第12期73-76,共4页China Petroleum Machinery

基　　金：国家科技重大专项"3000型成套压裂装备研制及应用示范工程"(2011ZX05048-08HZ);湖北省自然科学基金项目"颗粒物料在大倾角变径变螺距螺旋输送机中的输送规律研究"(2013CFB395);湖北省高等学校科技创新团队计划项目(T200906)

摘　　要：针对目前大倾角螺旋输砂器输砂量尚无明确计算公式的问题,在分析物料运移规律的基础上,采用单质点法建立理论模型,分析物料在稳定状态时的力学与运动规律,得到了螺旋输砂器的临界转速和临界转速下的输砂量与倾角、叶片表面摩擦因数、筒壁摩擦因数、填充量、密度等参数之间的理论公式,提出在实物试验结果的基础上建立实际与临界状态下参数之间的函数关系,并以45°倾角螺旋输砂器为例进行了分析和验证。分析结果表明,采用该方法可建立任意倾角时输砂量的理论公式。研究成果可为高效节能螺旋输砂器的设计与计算提供依据。Specific calculation formula about the conveying capacity of large angle spiral sand conveyor is still not found. Based on analyzing the law of material movement, a theoretical model based on single particle method is established to analyze the mechanical and movement law of the material in steady state. The critical speed of revolu-tion of the spiral sand conveyor is attained. The theoretical formula of sand conveying capacity with the angle, the blade surface friction coefficient, the cylinder wall friction coefficient, filling volume and material density in the critical state is also given. Establishment of the function relationship between the parameters in actual and critical state on base of the test results is proposed and then analyzed and verified by a 45°spiral sand conveyor. The results show that the conveying capacity theoretical formula can be established for spiral sand conveyor with any angle using the proposed method. The study could provide basis for design and calculation of high efficiency and energy saving spiral sand conveyor.

关 键 词：大倾角螺旋输砂器 螺旋输送机 临界状态 输砂流量 理论公式 

分 类 号：TH224[机械工程—机械制造及自动化]