QB6-50-2.2潛水螺桿電泵設計

機械論文編號:JX952  論文字數:12811.頁數:30   附CAD圖
目  錄
中文摘要 i
外文摘要 ii
目錄 iii
第一章 緒論 1
1.1概論 1
1.2螺桿泵的產生與發展 2
1.3螺桿泵結構與工作原理 3
  1.4潛水螺桿電泵的特性  3
  1.5論文內容概述  4
第二章 潛水螺桿電泵的結構設計 6
2.1潛水螺桿電泵的特點 6
2.2潛水螺桿電泵的主體結構分析 6
2.2.1潛水單螺桿電泵的壓力確定 6
2.2.2潛水螺桿電泵轉速的選擇 7
2.2.3潛水螺桿電泵襯套橡膠材料的選擇 8
2.2.4 軸封 9
2.2.5泵的驅動方式 9
第三章 潛水螺桿泵工作設計計算 10
3.1水力設計 10
3.2螺桿設計 10
3.3主軸與軸承部件尺寸計算與校核 11
第四章 電機的選用 14
  4.1Y系列三相異步電動機  14
  4.2電機的分類  14
第五章 軸承的選用  18
  5.1軸承的選擇  18
  5.2軸承游隙的選擇  18
  5.3油脂的選擇  19
第六章 萬向聯軸節的計算  20
  6.1選擇萬向聯軸節的類型  20
  6.2選擇萬向聯軸節應考慮的因素  20
第七章 總結  24
參考文獻 25
致謝 26

摘要
 泵是一類將原動機所做的功轉化成功被輸送流體的壓力的勢能和動能的流體機械。螺桿泵由于結構和工作特性，具有下列諸多優點： 能輸送高固體含量的介質，流量均勻壓力穩定，低轉速時更為明顯，流量與泵的轉速成正比。因而具有良好的變量調節性，一般泵多可以用來輸送不同粘度的介質，泵的安裝位置可以任意傾斜。適合輸送粘性物品和易受離心力等破壞的物品，體積小，重量輕，噪聲低，結構簡單，維修方便等。
 單螺桿泵的基本工作原理：單螺桿泵是一種內嚙合偏心回轉的容積泵，泵的主要構件：一根單頭螺旋的轉子和一個通常用彈性材料制造的具有雙關螺旋的定子，當轉子在定于型腔內繞定子的軸線作行星回轉時，轉定子之間形成的密閉腕就沿轉子螺線產生位移；因此就將介質連續地，均速地、而且容積恒定地從吸入口送到壓出端。
 此次畢業設計的內容主要包括螺桿尺寸數值計算、結構件的選擇以及螺桿泵的繪圖這幾方面。其中，螺桿泵的尺寸計算，主要是根據《單螺桿泵設計及實驗性研究報告》中的方法來計算的：通過分析水力集合系數K1,K2及轉速ns對泵性能曲線影響的對比試驗 ，闡述泵性能變化規律；在歸納分析優秀水力模型基礎上，運用數值分析方法擬合出系數K1,K2及泵容積效率計算公式，從而推導出泵螺桿直徑D，導程T和偏心距e的計算公式。

關鍵字：單螺桿泵；設計；水力計算；工程制圖

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