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安钢东线余热采暖始建于1992年，供热面积20万平方米，需水量800m3／h，近几年供热面积迅速增加到了30万平方米，需水量1200m3／h。由于水量不足，造成系统调整困难，沉积物堵塞管道，个别楼房不热等现象发生。文章从如何提高水量着手，着重从理论上分析了在回水主管道上串联水泵．二次加压提高水量的可行性，为下一步的管路系统改造提供依据。改造后运行表明，水量由原来的700—800m3／h提高到了1200—1300m3／h，基本满足实际使用要求。投资仅用53万元，工期一个多月，较其它改造方案节约资金数百万元，工期大大缩短。利用余热一项年创效益约180万元。同时也为其它供水管路系统改造提供了宝贵经验。
The waste heat of Angang East Line was built in 1992. The heating area is 200,000 square meters, and the water requirement is 800m3/h. In recent years, the heating area has rapidly increased to 300,000 square meters, and the water requirement has been 1200m3/h. Due to the lack of water, the system is difficult to adjust, sediments clog pipes, and individual buildings are not hot. The article starts with how to increase the amount of water and focuses on the theoretical analysis of the water pump in series on the return mains. The feasibility of the secondary pressurization to increase the amount of water provides the basis for the next pipeline system transformation. After the transformation, the operation showed that the water volume was increased from the original 700-800m3/h to 1200-1300m3/h, basically satisfying the actual use requirements. The investment is only 530,000 yuan, and the construction period is more than one month. It saves millions of dollars compared with other transformation projects, and the construction period is greatly shortened. The use of residual heat for a year to create a profit of about 1.8 million. At the same time, it also provides valuable experience for the transformation of other water supply piping systems.