摘要旋转接头作为一种常用的管道连接构件，在造纸、冶金、干燥、化工等领域广泛应用。旋转接头的常用工作介质有水、导热油等，因此分析研究其热力性质具有非常重要的意义。以市场上常用的高温导热油旋转接头QD型旋转接头为例，建立合理的几何、数学和传热模型，利用有限元分析软件ANSYS得到它在100℃、200℃、300℃、400℃和500℃5个温度条件下的温度、应力和应变等值线，并且利用Origin对数据进行了分析对比。同时还分析了当工作介质为熔盐时，外管选用耐腐蚀性强的316L不锈钢时的温度、应力和应变的等值线分布特征。结果表明：当热流体流过旋转接头时，其高温部位主要集中于外管的内端，而且此处的应力应变也为最大。65972

毕业论文关键词  旋转接头  ANSYS  热力耦合  温度场  应力应变

毕业设计说明书（论文）外文摘要

Title    Thermal Design of High-temperature Rotary Joint                     

Abstract

As a commonly used pipe connection components, rotary joint is widely used in papermaking, metallurgy, drying, chemical and many other fields. Rotary joint has so many working media, such as water, heat conduction oil. So the analysis and study of the thermal properties of the rotary joint tend to be very significant. When taking the commonly used rotary joint QD-type for example, a rational geometry, mathematics and heat transfer model is established. After using the finite element analysis software ANSYS, the temperature, stress and strain contours in 100℃,200℃,300℃,400℃ and 500℃ are gotten. At the same time, the graphical data are also analyzed by using Origin. When the working medium is molten, the 316L stainless steel then is used in the outer tube because of its strong resistance to corrosion. And its data of temperature, stress and strain are also well analyzed. The results show that: When the hot fluid flow through the rotary joint, the high temperature areas mainly concentrate in the outer tube end, and where the stress and strain also tend to be maximum.

Keywords   rotary joint   ANSYS   thermal-mechanical coupling  temperature field   stress-strain

目录

1  绪论 1

1.1  课题研究的背景和意义 1

1.2  课题研究的目的 1

1.3  国内外研究综述 1

1.3.1 旋转接头温度场和应力场的分析 2

1.3.2 旋转接头的故障分析 3

1.4  本文研究的内容 4

2  旋转接头的简介 5

2.1  旋转接头的分类 5

2.2  QD型旋转接头的结构及各部件的作用 6

2.3  QD型旋转接头的工作原理 6

2.4  本章小结 7

3  旋转接头的建模 8

3.1  几何模型的建立 8

3.2稳态传热模型[18]的建立 9

3.2.1 温度的一维自由度假设 9

3.2.2 传热的对称性假设 9

3.2.3 传热微分方程的建立与数学描述 9

3.3  利用ANSYS进行模型分析运算