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技术改造
压缩机技术 Compressoc
文章编号：1006-2971(2011)01-0026-03
2011年第1期（总225期）
离心式合成气压缩机高压缸（C02002）
止推侧封头拆装顺序的优化改造
赖财满，施时楷，朱杰
（中海石油化学股份有限公司，海南东方572600）
摘要：介绍了年产60万吨甲醇装置合成气压编机高压缸检修时，止推侧封头拆装中出现的难题，根据实物结构的层次分析，严详累考了拆装过程的安全性，以及实施改进的可行性、可靠性和必要性，提出了
优化改造的建议，实现了整图式款密封安装过程简单、顺畅、安全和便利。关键调：高压缸封头；拆装；顺序；优化改造
中图分类号：TH45
文献标志码：B
TheOptimizationReformationofDisassemblySequenceofHigh-pressureCylinder
(C02002)Head in Thrust Side for Centrifugal Synthesis Gas Compressor
LAI Cai-man,SHI Shi-kai,ZHU Jie
( China Blue Chemical Lid. ,Dongfang 572600,China)
Abstract: This paper has introduced the difficulties occurred during disassembling the head in the thrust side when the high-pressure cylinder of synthesis gas compressor in methanol unit with annual output of six hundred thousand tons is inspected. According to the level analysis of product structure,the safety during the disassembly process is seriously considered. Furthemore,the feasibility,possibility,reliability and necessity in the process of implementing improvement are also considered. And the suggestion for optimization refomation is pointed out boldly. Being approved by design department of Mitsubishi Heavy Industries,the structural optimization reforma-tion is implemented in inspection site, The installation of full circle-type soft sealing is achieved to be simple, smooth,safe and facilitate, It is well applied in practice and obtained praise of the design department of Mitsub ishi Heavy Industries in theory. And this optimization improvement will be applied to the same kind of compres+ sors in thefuture.
Key words : high-pressure cylinder head;disassemble;sequence;optimization reformation
1概述
中海石油化学股份有限公司海南基地年产60 万吨甲醇装置于2006年8月建成投产，其关键设备离心式合成气压缩机组由日本三菱重工（MHI)设计制造。机组由蒸汽透平驱动，位于低压缸和高压缸的中间，低压在透平高压侧，高压缸在透平低压侧。
压缩机高压缸基本结构：机壳为桶形，它的底部位于驱动机侧，自由端侧散开，便于拆装内缸。为改进可维修性，所有的内部件都集成为一个内缸。内
收稿日期：2010-1020
缸由进口和出口、隔板以及两端的封头构成，并用螺栓紧固，转子就组装其中。各级隔板焊接成一体，水平削分，隔板级间剖分面加有0形条密封。另外，轴封和轴承亦组装在该内缸上，轴端密封为干气密封。径向轴承为可倾瓦轴承，止推轴承为金斯伯雷轴承，轴承采用强制润滑方式。循环段叶轮口环、平衡鼓及段间气封处特设软密封，其它各级采用梳齿迷宫密封，见图1；特别之处在循环段人口设置有可调导叶（MIGV），用以调节循环气量。内缸自由侧采用剪切环形式卡固在外缸内腔，好处是简化装配结构，有效降低制造成本、减轻检修劳动强度，提高检修效率。