客户挑战 / Challenge
某油田集输管道运行5年后内壁锈蚀严重，管径从DN200缩至DN175，输送效率下降30%。传统化学清洗需停输7天，且废液处理成本高昂。机械清管器无法适应弯头和变径段。
An oil field gathering pipeline suffered severe internal corrosion after 5 years — effective diameter shrank from DN200 to DN175, reducing throughput 30%. Chemical cleaning required 7-day shutdown with expensive waste disposal. Mechanical pigs couldn't navigate elbows and reducers.
解决方案 / Solution
采用柔性螺旋弹簧刷清管方案，刷体由螺旋缠绕的不锈钢弹簧丝制成，外径弹性适配DN175-200管径变化。刷头前端为锥形导向，可顺利通过90°弯头和变径段。配合高压水驱动，在线作业无需停输。
Deployed flexible spiral spring brush cleaning system — brush body made of helical stainless steel spring wire, OD elastically adapts to DN175-200 variations. Conical nose guide navigates 90° elbows and reducers. High-pressure water driven, operates online without shutdown.
实施效果 / Results
管径恢复至DN197，输送效率恢复至设计值的95%。清洗作业仅需8小时，无需停输。相比化学清洗节省费用约60万元，零废液排放。
Pipe diameter restored to DN197, throughput recovered to 95% of design. Cleaning completed in 8 hours without shutdown. Saved ~$85,000 vs. chemical cleaning, zero liquid waste.
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