蒸汽冷凝液冷却器设计及分析

发布时间：2018-09-15 06:31

【摘要】：热交换器是在流体之间传递热量的设备,是化工、炼油、动力、食品、轻工、制药、航空等许多重要部门的通用设备。管壳式热交换器是热交换器中应用最广的一类,其特点是制造成本低,清洗方便,处理量大,工作可靠,使用经验长等。冷凝器是使用范围很广的一种化工设备,属于热交换器的一种。本设计任务主要是根据已知条件选择采用浮头式热交换器机的设计。首先根据给出的设计温度和设计压力来确定设备的结构形式以及壳程和管程的材料,然后根据物料性质和传热面积来确定换热管的材料,尺寸,根数。根据换热管的根数确定换热管的排列,并根据换热管的排列和长度来确定筒体直径以及折流板的选择。通过对容器的内径和内外压的计算来确定壳体和封头的厚度并进行强度校核。然后是对热交换器各部件的零部件的强度设计,有法兰的选择和设计计算与校核,钩圈及浮头法兰的设计计算与校核和管子拉脱力的计算。还包括管板的结构设计、防冲挡板、滑道结构的设计以及支座设计。结构设计中的标准件可以参照国家标准根据设计条件直接选取;非标准件,设计完结构后必须进行相应的应力校核。本次设计进行了固定管板式热交换器的工艺设计计算,依据GB 151-1999《管壳式热交换器》和GB 150-1998《钢制压力容器》等标准,对壳体、法兰、封头等进行了结构设计以及强度计算。对固定管板式热交换器的检验、安装等方面内容进行了较详细的讨论。
[Abstract]:Heat exchanger is a kind of equipment that transfers heat between fluids. It is a general equipment in many important departments such as chemical industry, oil refining, power, food, light industry, pharmacy, aviation and so on. A widely used chemical equipment is a kind of heat exchanger. The design task is mainly to select the design of floating head heat exchanger according to known conditions. Firstly, according to the given design temperature and design pressure, the structure of the equipment and the materials of shell and pipe sides are determined, and then according to the material properties and heat transfer. The material, size and number of the heat exchanger tubes are determined by the area. The arrangement of the heat exchanger tubes is determined by the number of the roots. The diameter of the tube and the selection of baffles are determined by the arrangement and length of the heat exchanger tubes. The thickness of the shell and the head is determined by calculating the inner diameter and the inner and outer pressure of the container and the strength is checked. The strength design of the components of the exchanger includes the selection of flanges, the calculation and check of design, the calculation and check of hook ring and floating head flange, and the calculation of tube pull-out force. It also includes the structural design of tubesheet, anti-scour baffle, slideway structure and support design. According to the design conditions, the non-standard parts must be checked after the structure is designed. The process design calculation of the fixed tubesheet heat exchanger is carried out. According to the standards of GB 151-1999 < shell-and-tube heat exchanger > and GB 150-1998 < steel pressure vessel >, the shell, flange and head are designed. The inspection and installation of fixed tubesheet heat exchanger are discussed in detail.
【学位授予单位】：西安工程大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ051.5

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