QB6-50-2.2潜水螺杆电泵设计

机械论文编号:JX952  论文字数:12811.页数:30   附CAD图
目  录
中文摘要 i
外文摘要 ii
目录 iii
第一章 绪论 1
1.1概论 1
1.2螺杆泵的产生与发展 2
1.3螺杆泵结构与工作原理 3
  1.4潜水螺杆电泵的特性  3
  1.5论文内容概述  4
第二章 潜水螺杆电泵的结构设计 6
2.1潜水螺杆电泵的特点 6
2.2潜水螺杆电泵的主体结构分析 6
2.2.1潜水单螺杆电泵的压力确定 6
2.2.2潜水螺杆电泵转速的选择 7
2.2.3潜水螺杆电泵衬套橡胶材料的选择 8
2.2.4 轴封 9
2.2.5泵的驱动方式 9
第三章 潜水螺杆泵工作设计计算 10
3.1水力设计 10
3.2螺杆设计 10
3.3主轴与轴承部件尺寸计算与校核 11
第四章 电机的选用 14
  4.1Y系列三相异步电动机  14
  4.2电机的分类  14
第五章 轴承的选用  18
  5.1轴承的选择  18
  5.2轴承游隙的选择  18
  5.3油脂的选择  19
第六章 万向联轴节的计算  20
  6.1选择万向联轴节的类型  20
  6.2选择万向联轴节应考虑的因素  20
第七章 总结  24
参考文献 25
致谢 26

摘要
 泵是一类将原动机所做的功转化成功被输送流体的压力的势能和动能的流体机械。螺杆泵由于结构和工作特性，具有下列诸多优点： 能输送高固体含量的介质，流量均匀压力稳定，低转速时更为明显，流量与泵的转速成正比。因而具有良好的变量调节性，一般泵多可以用来输送不同粘度的介质，泵的安装位置可以任意倾斜。适合输送粘性物品和易受离心力等破坏的物品，体积小，重量轻，噪声低，结构简单，维修方便等。
 单螺杆泵的基本工作原理：单螺杆泵是一种内啮合偏心回转的容积泵，泵的主要构件：一根单头螺旋的转子和一个通常用弹性材料制造的具有双关螺旋的定子，当转子在定于型腔内绕定子的轴线作行星回转时，转定子之间形成的密闭腕就沿转子螺线产生位移；因此就将介质连续地，均速地、而且容积恒定地从吸入口送到压出端。
 此次毕业设计的内容主要包括螺杆尺寸数值计算、结构件的选择以及螺杆泵的绘图这几方面。其中，螺杆泵的尺寸计算，主要是根据《单螺杆泵设计及实验性研究报告》中的方法来计算的：通过分析水力集合系数K1,K2及转速ns对泵性能曲线影响的对比试验 ，阐述泵性能变化规律；在归纳分析优秀水力模型基础上，运用数值分析方法拟合出系数K1,K2及泵容积效率计算公式，从而推导出泵螺杆直径D，导程T和偏心距e的计算公式。

关键字：单螺杆泵；设计；水力计算；工程制图

The Design of Screw Pump QB6-50-2.2

Abstract
 Pump is a kind of the fluid mechanical that can make the original motivation of the work done by transmission fluid into the pressure of the potential energy and kinetic energy. As the structure and operating characteristics of screw, there are the following many advantages: can transport the high solid content medium, uniform flow and pressure stability, more obvious when low-speed, proportional to the flow and the speed of the pump, and so they have a good regulatory variables. A pump can be used to transport multi-media of different viscosity. Pump can be installed any tilt. They are suitable for handling viscous materials and destruction of sensitive items such as centrifugal.They are small size, light weight, low noise simple structure, easy maintenance and so on.
 Following is the basic working principle of single screw pump: Single screw pump is an eccentric rotation within the gear volume pumps. The main components of the pump are a single helical rotor head and a double-helical stator made by generally elastic material . The rotor is scheduled around the cavity axis for the stator when the planetary rotation. The confined space  Between the rotor and the stator produce displacement along the rotor spiral. So media will be sent to press out from the intake side with the average rate continuously and more constantly in volume.
 The graduation project covers the screw size numerical calculation, the choice of structural parts and the screw pump drawing . Among them, the screw size calculation is mainly based on the method of "single-screw design and experimental research report" . By analyzing the coefficient of hydraulic collection k1,k2 and the speed n and contrast test about the pump performance curve ,these paper mainly explained variation of the pump performance. In the inductive analysis based on the hydraulic model,I Fitted coefficients K1, K2 with Numerical analysis.Thus I derived  the frmula of the screw pump diameter D , Lead T and the Eccentricity E.
 
key words: Single screw pump; design; Hydraulik calculation; Engineering Drawing