We analyzed the flow characteristics of a control valve in a secondary heating network and combined the optimization of the valve core structure with a method to solve the actual control problem of the secondary heating network. First, according to the common V-sector ball valve core, another three kinds of different V-sector ball valve cores were designed, and a simulation analysis was carried out using CFD software. By comparing the influence of four different valve core opening shapes on the valve flow characteristic curve, it was found that V3 showed better equal percentage characteristics under the opening range of 50%–100%, which improved the flow control accuracy in the heating pipe network that lacked flow feedback, and the accuracy of the simulation results was verified on the test bench. Based on this, in the different branches of the heating secondary network, the opening variation range of the four valves in actual applications were determined, and the opening variation range of the V3 valve was increased by approximately 10%. The analysis results showed that controlling the proportion of the slender part in the opening shape of the spool can effectively increase the opening range of the control valve in practical applications, thereby improving the flow control accuracy of the heating secondary network and reducing the energy consumption of heating regulation.

分析了二次热网控制阀的流量特性，将阀芯结构的优化与解决二次热网实际控制问题的方法相结合。首先，根据常见的V形球阀芯，设计了另外三种不同的V形球阀芯，并利用CFD软件进行了仿真分析。通过比较四种不同阀芯开度形状对阀门流量特性曲线的影响，发现V3在50%～100%开度范围内表现出较好的等百分比特性，提高了供热管网流量控制精度缺乏流量反馈，仿真结果的准确性在试验台上得到验证。基于此，在供热二次网的不同支路中，确定了实际应用中四个阀门的开度变化范围，V3阀门的开度变化范围增加了约10%。分析结果表明，控制阀芯开口形状中细长部分的比例，在实际应用中可以有效增大调节阀的开度范围，从而提高供热二次网的流量控制精度，降低二次管网的能耗。加热调节。