设计简介
双吸式二螺杆泵的结构设计
双吸式螺杆泵在最近几年进行了许多的研究，技术有了很大的发展。新的研究成果在许多领域进行应用，并且取得了很好的效果。双吸式二螺杆泵的应用范围和领域一定会逐步的扩大，应用到各行各业中去。相对的技术要求也会越来越高。本文主要介绍了双吸式二螺杆泵的结构设计以及设计步骤，深入讨论其中各个零部件的选择。
首先，我们应该了解双吸式螺杆泵的工作原理。双吸式二螺杆泵是主动螺杆在转动时带动从螺杆在衬套中转动，依靠密封腔的容积变化来流体输送的。其次，螺杆泵最重要的部分是螺杆，所以我们首先进行是双吸式二螺杆泵的主从动螺杆的结构设计。在双吸式二螺杆泵的设计过程中最重要的是螺杆的设计，我们主要依靠给定的流量和压力以及所输送的介质这些数据来确定螺杆的设计方向。在次，螺杆泵的密封是很重要的。螺杆泵是一个压力泵，它的密封系统好坏决定了能否提供足够的压力来输送介质。所以在设计的过程中衬套与螺杆的密封、衬套与壳体的密封、螺杆与端盖的密封是我们要考虑的。最后，我们要选择一些螺钉、轴承、安全阀、垫圈等双吸式螺杆泵的附件。
文章重点介绍的是衬套壳体的密封性设计和双吸式二螺杆泵的螺杆的设计计算，对于双吸式二螺杆泵的附件的选择也做了详细的讲解。
关键词：双吸式二螺杆泵，结构设计，密封系统，设计步骤
STRUCTURAL DESIGN OF THE DOUBLE SUCTION OF THE TWO-SCREW PUMP
ABSTRACT
Double suction of the two-screw pump has a rapid development in recent years, and it is now used in many areas and have a good achievement. Range of applications and fields of the double suction of the two-screw pump in the future will become increasingly large, and its technical requirements have become higher. So this paper describes the structural design steps of the double suction of the two-screw pump and the choice of the various components.
First, we need to know and understand how the double suction of the two-screw pump works. Double suction of the two-screw pump is active screw driven in rotation from the screw rotation in the bushing, it relies on the formation of the sealed chamber of volume change transmission fluid. Second, The screw is the most important part of a screw pump, so we first design the active screw and driven screw structure of the double suction of the two-screw pump. Screw design has a very important role in the design process of the double suction of the two-screw pump, the data to determine of the structural design of the screw with the flow and pressure as well as the transmission medium. Third, the seal of screw pump is very important. Screw pump is a pressure pump, a good sealing system in order to generate enough pressure to the transmission medium. We should consider of the bushing and screw seal, bushing and casing seal, screw and end cap seal when we design the double suction of the two-screw pump .Last, we have to choose the double suction of the two-screw pump with accessories, such as screws, bearings, safety valves, gaskets, etc.
The article highlights the double suction of the two-screw pump design calculations and sealing of the bushing shell design, in addition the article do a lot of introduction to the choice of attachment of the double suction of the two-screw pump.
KEYWORDS：double suction of the two-screw pump，structural design，sealing system，design step
摘要 1
ABSTRACT 2
第一章 绪论 4
1.1 螺杆泵的使用领域及其分类 4
1.2 双吸式二螺杆泵的介绍 6
1.3 课题的来源及意义 10
1.4 国内外的研究现状 10
2 主动螺杆和从动螺杆的设计 12
2.1 双吸式二螺杆泵螺杆螺纹的设计与计算 13
2.2 两螺杆的原件定位和中心距的选择 15
3 双吸式二螺杆泵密封有关零件的设计 20
3.1 双吸式二螺杆泵的工作时各种间隙的计算与选择 20
3.2 衬套的厚度及结构的设计计算 21
3.3 泵外壳的尺寸及结构的设计 23
3.4 支撑端盖和外端盖的设计 29
4 附件的选择 33
4.1 主从动螺杆两端轴承的选择 33
4.2 安全阀的选择 34
4.3 密封垫圈的选择 36
5 两螺杆和轴承以及螺钉的强度校核 36
5.1 螺杆的强度校核 36
5.2 轴承的强度校核 37
5.3 螺钉的强度计算 38
6 结论与展望 40
参考文献 42
谢辞 43
摘要
双吸式螺杆泵在最近几年进行了许多的研究，技术有了很大的发展。新的研究成果在许多领域进行应用，并且取得了很好的效果。双吸式二螺杆泵的应用范围和领域一定会逐步的扩大，应用到各行各业中去。相对的技术要求也会越来越高。本文主要介绍了双吸式二螺杆泵的结构设计以及设计步骤，深入讨论其中各个零部件的选择。
首先，我们应该了解双吸式螺杆泵的工作原理。双吸式二螺杆泵是主动螺杆在转动时带动从螺杆在衬套中转动，依靠密封腔的容积变化来流体输送的。其次，螺杆泵最重要的部分是螺杆，所以我们首先进行是双吸式二螺杆泵的主从动螺杆的结构设计。在双吸式二螺杆泵的设计过程中最重要的是螺杆的设计，我们主要依靠给定的流量和压力以及所输送的介质这些数据来确定螺杆的设计方向。在次，螺杆泵的密封是很重要的。螺杆泵是一个压力泵，它的密封系统好坏决定了能否提供足够的压力来输送介质。所以在设计的过程中衬套与螺杆的密封、衬套与壳体的密封、螺杆与端盖的密封是我们要考虑的。最后，我们要选择一些螺钉、轴承、安全阀、垫圈等双吸式螺杆泵的附件。
文章重点介绍的是衬套壳体的密封性设计和双吸式二螺杆泵的螺杆的设计计算，对于双吸式二螺杆泵的附件的选择也做了详细的讲解。
关键词：双吸式二螺杆泵，结构设计，密封系统，设计步骤
STRUCTURAL DESIGN OF THE DOUBLE SUCTION OF THE TWO-SCREW PUMP
ABSTRACT
Double suction of the two-screw pump has a rapid development in recent years, and it is now used in many areas and have a good achievement. Range of applications and fields of the double suction of the two-screw pump in the future will become increasingly large, and its technical requirements have become higher. So this paper describes the structural design steps of the double suction of the two-screw pump and the choice of the various components.
First, we need to know and understand how the double suction of the two-screw pump works. Double suction of the two-screw pump is active screw driven in rotation from the screw rotation in the bushing, it relies on the formation of the sealed chamber of volume change transmission fluid. Second, The screw is the most important part of a screw pump, so we first design the active screw and driven screw structure of the double suction of the two-screw pump. Screw design has a very important role in the design process of the double suction of the two-screw pump, the data to determine of the structural design of the screw with the flow and pressure as well as the transmission medium. Third, the seal of screw pump is very important. Screw pump is a pressure pump, a good sealing system in order to generate enough pressure to the transmission medium. We should consider of the bushing and screw seal, bushing and casing seal, screw and end cap seal when we design the double suction of the two-screw pump .Last, we have to choose the double suction of the two-screw pump with accessories, such as screws, bearings, safety valves, gaskets, etc.
The article highlights the double suction of the two-screw pump design calculations and sealing of the bushing shell design, in addition the article do a lot of introduction to the choice of attachment of the double suction of the two-screw pump.
KEYWORDS：double suction of the two-screw pump，structural design，sealing system，design step
摘要 1
ABSTRACT 2
第一章 绪论 4
1.1 螺杆泵的使用领域及其分类 4
1.2 双吸式二螺杆泵的介绍 6
1.3 课题的来源及意义 10
1.4 国内外的研究现状 10
2 主动螺杆和从动螺杆的设计 12
2.1 双吸式二螺杆泵螺杆螺纹的设计与计算 13
2.2 两螺杆的原件定位和中心距的选择 15
3 双吸式二螺杆泵密封有关零件的设计 20
3.1 双吸式二螺杆泵的工作时各种间隙的计算与选择 20
3.2 衬套的厚度及结构的设计计算 21
3.3 泵外壳的尺寸及结构的设计 23
3.4 支撑端盖和外端盖的设计 29
4 附件的选择 33
4.1 主从动螺杆两端轴承的选择 33
4.2 安全阀的选择 34
4.3 密封垫圈的选择 36
5 两螺杆和轴承以及螺钉的强度校核 36
5.1 螺杆的强度校核 36
5.2 轴承的强度校核 37
5.3 螺钉的强度计算 38
6 结论与展望 40
参考文献 42
谢辞 43
