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炉水循环泵电机腔室温度高原因分析与处理

2021-07-17曹建

河南科技 2021年7期

曹建

摘 要:炉水循环泵中电机腔室的温度升高是当前锅炉工作中面临的主要问题之一。在国家新能源集团国神府谷电厂中所使用的发电机组锅炉配置有三台德国KSB(凯士比)炉水循环泵,当装置工作时,电机腔室内部温度发生异常变化,呈现出持续升高的趋势,最高曾达到55 ℃。在以炉水循环泵实际运行参数和电机解体之后的情况为基础做综合化分析后发现,电机底部的滤网处存在大量黑色状的黏稠物,经过有关人员检测后证实该物质为三氧化二铁以及四氧化三铁的混合物,腔室温度在清除杂质后得以恢复,但后续仍会出现温度升高问题,并且杂质再次出现。为此,本文对该情况进行分析,希望借此可以给相关单位提供一定借鉴。

关键词:电机腔室;KSB炉水循环泵;温度升高

中图分类号:TM621.2文献标识码:A文章编号:1003-5168(2021)07-0035-04

Cause Analysis and Treatment of High Temperature in Motor Chamber of Furnace Water Circulating Pump

CAO Jian

(Shaanxi Deyuan Fugu Energy Co., Ltd.,Yulin Shaanxi 719400)

Abstract: The temperature increase of the motor chamber in the boiler water circulating pump is one of the major problem in the boiler work. There are three sets of Germany KSB pumps of boiler water circulating in Guoshen Fugu Power Plant of National New Energy Group. When the device is working, the temperature inside the motor chamber changes abnormally, showing a trend of continuous increase, with the highest temperature reaching 55 ℃. Based on the actual operation parameters of the boiler water circulating pump and the situation after the disassembly of the motor, it is found that there are a lot of black viscous substances at the bottom of the filter screen of the motor. After the detection by relevant personnel, it is confirmed that the substance is a mixture of ferric oxide and ferric oxide. The chamber temperature can recover after removing the impurities, but the temperature will still rise later and impurities appear again. Therefore, this paper analyzed the situation, hoping to provide some reference for the relevant units.

Keywords: motor chamber;KSB furnace water circulating pump;temperature rise

1 电机腔室温度异常情况简述

国家新能源集团国神府谷电厂(以下简称“国神府谷电厂”)一期两台机组所用设备是亚临界汽包炉,每一台机组均配置三台德国KSB炉水循环泵。该厂最早在2008年开始投入使用,在使用过程中,按照设备的投用时间对机组进行大修时,也对炉水循环泵电机进行了拆除和保养。在未将炉水循环泵电机进行拆除保养之前,其腔室内部温度长期处于30 ℃及以下,但是,在经过外出保养以及回装等过程之后,所有炉水循环泵都出现了不同程度的腔室内部温度异常升高的情况。通过观察可知,最高温度曾达到55 ℃(对于此型号设备,当温度达到65 ℃之后便会自动跳闸)。……

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