Abstract Solving the problem of continuous and stable power supply for the water leakage monitoring equipment is challenging in water supply system. Due to the excess water pressure existing in the water supply pipes, the hydropower inside the pipes becomes an effective renewable energy for supplying power to water leakage monitoring equipment. In this paper, a vertical drag-type runner is integrated into the ball valve to harvest the potential hydropower while regulating the fluid. Numerical investigation of the novel ball valve (referred to as GreenValve) is carried out using the software FLUENT. According to different performance requirements, the best working parameters at the average flow rate of 15.7 × 10−3 m3/s are obtained: when working at the optimal tip speed ratio, the GreenValve performs best within the relative opening range of 25%–39%, in which it can harvest considerable energy (>80 W) with the highest efficiency (>11.5%) while the water head loss is only 4–12 m. For the water supply system, the water head loss due to the impact of energy harvesting by the GreenValve can be used to offset the excess pressure in pipes which can easily cause leakage of the pipe network system.

中文翻译：

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具有能量收集功能的控制阀的性能研究

摘要 解决漏水监测设备持续稳定供电的问题是供水系统面临的挑战。由于供水管道中存在过大的水压，管道内的水电成为一种有效的可再生能源，为漏水监测设备供电。在本文中，垂直拖动式转轮被集成到球阀中，在调节流体的同时收获潜在的水电。使用 FLUENT 软件对新型球阀（称为 GreenValve）进行数值研究。根据不同的性能要求，得到平均流速为15.7×10−3 m3/s时的最佳工作参数：在最佳叶尖速比下工作时，GreenValve 在 25%–39% 的相对开度范围内表现最佳，在该范围内它可以以最高效率 (>11.5%) 收集大量能量 (>80 W)，而水头损失仅为 4–12 m。对于供水系统，由于GreenValve能量收集的影响而产生的水头损失可以用来抵消管道中容易造成管网系统泄漏的超压。