复杂热网水力工况仿真模型与可信度检验

Simulation Model and Reliability Test of Hydraulic Conditions of Complex Heating Network

建立供热热水管网水力工况仿真模型,用于管网压力、流量分布仿真。结合实验管网,在正常工况、泄漏工况下,对3种管网(双热源枝状管网、单热源单环状管网、双热源双环状管网)压力和流量的仿真结果、实验结果进行比较,以验证管网水力工况仿真模型的有效性。正常工况:3种管网的仿真压力与实验压力分布一致,仿真压力与实验压力的最大相对误差绝对值均小于5%,仿真流量与实验流量的最大相对误差绝对值均小于5%。泄漏工况:对于3种管网,仿真压力与实验压力的最大相对误差绝对值的最大值为5.32%。用户仿真流量与实验流量基本吻合,最大相对误差绝对值为9.27%。正常工况、泄漏工况下,管网水力工况仿真模型的仿真结果可信度均比较高。

The hydraulic condition simulation model of the heating and hot water pipe network is established to simulate the pressure and flow distribution of the pipe network.Combined with the experimental pipe network,under the normal and leakage conditions,the simulation results and experimental results of the pressure and flow of three pipe networks(double heat source branch pipe network,single heat source single ring pipe network and double heat source double ring pipe network)are compared to verify the effectiveness of the hydraulic condition simulation model of the pipe network.Normal condition:the simulated pressure distribution of the three pipe networks is consistent with the experimental pressure distribution,the absolute value of the maximum relative error between the simulated pressure and the experimental pressure is less than 5%,and the absolute value of the maximum relative error between the simulated flow and the experimental flow is less than 5%.Leakage condition:for three pipe networks,the maximum absolute value of the maximum relative error between the simulated pressure and the experimental pressure is 5.32%.The user simulation flow is basically consistent with the experimental flow,and the absolute value of the maximum relative error is 9.27%.Under normal and leakage conditions,the reliability of the simulation results of the hydraulic condition simulation model of the pipe network is relatively high.