王德琨 刘宗振 张永梅


摘 要: 石油化工行业对各类换热器的应用非常广泛。在使用过程中泄露问题时有发生,處理泄漏方法很多,也很成熟,但是,查漏工作始终困扰着业内人士。目前各企业均是在工装设计上投入了大量的精力,虽然取得了一定的效果,但都不够理想。因为均未摆脱繁重的体力劳动和笨重的工装卡具。通过反复实践和论证,确定利用单管抽真空代替水压试验对换热管查漏技术具备可行性;该施工方法通过了2007-2008年度的石油工法评审(省部级),题目为;利用抽真空的方法代替水压试验。并申请取得了持有专利技术的专用工具(换热器查漏用真空枪——专利号200810228742)。
关 键 词:换热管查漏;抽真空;真空枪;试压工装(假浮头,假法兰)
中图分类号:TQ 051 文献标识码: A 文章编号: 1671-0460(2015)06-1316-02
A New Detection Method of Heat Pipe Leakage
in the Process of Heat Exchanger Maintenance
WANG De-kun,LIU Zong-zhen,ZHANG Yong-mei
(HQC Liaoning Branch, Liaoning Fushun 113006,China)
Abstract: All kinds of heat exchangers are widely used in the petrochemical industry. The problem of leakage always happens in use of the heat exchangers, treating methods for the leakage are various and mature, but the leak detection work usually troubles the experts. Now many companies spend a lot of vigour on tooling design, although the certain effect has been obtained, the results are not ideal, because they cannot get rid of the heavy manual labor and the heavy fixtures. Through repeated practice, its pointed out that single pipe vacuumizing method instead of water pressure test can be used to detect the leakage. The construction method (the method of using vacuum instead of hydraulic pressure test) has passed the 2007-2008 oil working method review (provincial level). And its patent technology has been achieved.
Key words: Heat exchanger leak;Vacuumizing;Vacuum gun;Pressure testing equipment
在石油化工行业中,对于换热器检修过程中的查漏点工作,无论管理人员还是技术人员都希望通过使用工装、不抽芯子进行水压试验,达到对换热器是否存在泄漏的检查目的,但虽多年的摸索和研究,始终没有设计出通用性强的工装,对于非标换热器更是难之又难。为了攻克这一技术难题,在保证查漏准确度的前提下,兼顾了降低检修操作劳动强度和费用的因素,提出了“利用抽真空方法代替水压试验”的新技术。
1 解除烦恼走出新路
凡多年从事石油化工行业检修、维修工作的企业和专业人员在换热器检修过程中,经常会遇到在查找浮头式换热器的换热管泄漏情况时,由于没有合适的工装而一筹莫展。……