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丹心妙手“治”杂症——记华能上海电力检修公司高级技师王健

2017-09-22 11:27:07   央广网

王健认真研究国内外有关汽轮机检修的相关资料

保障电厂汽轮机组“健康”的“外科医生”

上海检修公司是中国华能集团唯一的区域性实体火电检修公司。汽轮机是电厂的核心部件,而汽轮机检修是火电厂检修的重中之重,是对体力与智力的要求相当高的一项工作。

正是有王健等一批优秀的汽轮机检修技师,才使得电厂得以正常运行。王健被工友们称为解决汽轮机组难题的“外科医生”。在王健的带领下,针对各类机组存在的“疑难杂症”进行技术攻坚,解决了大量的难题。

王健的工友张振海给记者举了一个例子。

2010年3月检修公司承接华能石洞口第二电厂1#机组B级检修项目。期间在对主给水泵解体检修过程中发现,该泵体高压端密封面因受高温高压水流冲蚀产生了严重破损,已无法保证该设备正常投运。主给水泵是电厂的关键设备之一,产生故障将直接影响发电机组的正常发电、供电。

发现重大缺陷后,业主方立即致电设备制造商美国拜伦·杰克逊泵业制造公司,询问处理方案。厂商回复该情况一般不做修补,建议直接更换整台设备,这将造成国家上百万美元的外汇支出。或者也可通过荷兰一厂家进行修补,但对方报价仅密封面修补就要一百多万人民币,不包括设备从机组系统中解列、后期安装以及运至荷兰的相关运输费用。并且整个修补周期需数月以上,远远超出此次检修项目的工期,将直接影响到1#机组的计划投运时间。介于情况严峻,业主方希望检修公司能够设法制定出可行的替代方案。

当时王健任机化分部专职工程师,是汽机专业技术带头人,该项任务责无旁贷的落到他的肩上,他参阅了各方面的技术资料,进行了全方位的数据论证,制定了现场进行金属补焊,手工打磨修复的施工方案。经过公司各部门的多次讨论,最后由业主方领导决定,就按王健的方案实施。

但是在具体实施过程中还是遇到了不少困难,有操作人员反映方案中0.10mm表面平整度及垂直度过于苛刻,即使在有条件的情况下使用机加工都不一定能达到,何况手工打磨呢?王健的答复是:“不用着急,最终打磨由我来。”待各项前期准备工作结束后,王建拿着一把锉刀,一把铲刀,二话不说的进入了主给水泵直径不到1M,深2.5M的筒体内,一米八几的身高蜷缩在如此小的空间内整整两天时间,硬是将该密封面表面平整度打磨至0.05mm,令大家惊叹不已。该设备正常投运后,正常运行至今。

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