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近年来北京市在地下热矿水开发利用中,发现热矿水对井泵(包括地面管道及附属设备)的腐蚀现象比较严重。远远高于浅层冷水。特别是转动部位的深井泵轴,腐蚀现象更为严重,最大腐蚀速率在3～4毫米/年,一套新泵轴用不到三年就要更新。而且,深井泵运转中,断轴、断管事故不断发生。据14眼热水井统计,先后有十多次发生过这类
In recent years, Beijing City, in the development and utilization of underground hot mineral water, found that hot mineral water on the well pump (including surface pipes and ancillary equipment) corrosion is more serious. Much higher than shallow cold water. In particular, the deep shaft part of the rotating shaft, corrosion is more serious, the maximum corrosion rate of 3 ~ 4 mm / year, a new pump shaft will be updated in less than three years. Moreover, deep well pump operation, broken shaft, broken accidents continue to occur. According to 14 hot water wells statistics, there have been more than ten such cases occurred