分布式变频供热系统均压管安装位置仿真分析
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摘要
针对以均压管定零压差点运行调节的分布式变频供热系统,利用一维流体仿真软件Flowmaster,结合实际工程,对均压管安装在热源和第一热用户处2种位置的系统水压图和变流量调节水力特性进行了对比分析。结果表明:均压管安装在第一热用户处可以在一定程度上缓解后端换热站超压的问题,变流量调节中可提高分布式换热站的水力稳定性。
For the distributed variable frequency heating system using the uniform pressure pipe to adjust zero pressure difference point, combining with the one-dimensional fluid simulation software Flowmaster and practical engineering, simulates and analyses the system water pressure diagram and variable flow regulating hydraulic characteristics under two conditions of the uniform pressure pipe installed at the heat source and the first heat user. The results show that the uniform pressure pipe installed at the first heat user can alleviate the problem of back-end heat exchanger overpressure and improve the hydraulic stability of distributed heat exchanger station in variable flow regulation.
For the distributed variable frequency heating system using the uniform pressure pipe to adjust zero pressure difference point, combining with the one-dimensional fluid simulation software Flowmaster and practical engineering, simulates and analyses the system water pressure diagram and variable flow regulating hydraulic characteristics under two conditions of the uniform pressure pipe installed at the heat source and the first heat user. The results show that the uniform pressure pipe installed at the first heat user can alleviate the problem of back-end heat exchanger overpressure and improve the hydraulic stability of distributed heat exchanger station in variable flow regulation.
引文
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[3] 刘文旭,李德英. 供热系统量化管理调控技术[J]. 区域供热,2013(4):58- 62
[4] 孙春华,韩钊,贾萌,等. 分布式变频供热系统定零压差点运行调节特性[J]. 暖通空调,2015,45(8):42- 45
[5] 张春光,李志,梁大为. 分布式和二级泵系统在集中供热系统中的应用[J]. 暖通空调,2011,41(1):88- 92
[6] 葛云启,李现霞,段宝群. 某分布式变频泵供热系统存在问题与优化[J]. 煤气与热力,2016,36(8):10- 12
[7] 石兆玉. 实施分布式循环供热系统时应注意的几个问题[J]. 区域供热,2013(2):1- 5
[8] 符永正,周丹红,柳志威. 水泵比例定律在供暖空调中的应用分析[J]. 暖通空调,2010,40(2):39- 42