A control valve for limiting pressure down-surges during hydrant operations

用于限制消防栓运行期间压力下降的控制阀

• 批准号: 500173-2016
• 负责人: Guo, Yiping
• 金额: $ 1.09万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Idea to Innovation
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=607947
• 关键词: control; valve; limiting; pressure; down

The design of water distribution systems requires that pressures at any point in the system be maintained above a minimum level to ensure adequate flows for satisfying expected demands. A minimum pressure criterion is typically set for the safe operation of water distribution systems with the goal of allowing the supply of the required flows to prevent direct contamination during operations. However, the minimum pressure criterion is often violated during transient events resulting from events like rapid fire hydrant openings. A portable control device which can be quickly attached to a hydrant is conceived here to limit low transient pressures to desired levels even if fire crews open the hydrant as fast as they would. How the novel device can be designed and applied for transient protection is the heart of this proposal. With the use of this device, pressures in supply systems and other liquid systems can be better controlled during hydrant or valve operations such that water utilities and insurance companies can reduce the minimum pressure criterion that they require. The resulting reduction of excess pressures can result in large operational savings to utilities through reduced pipe break frequencies, leakage rates, system energy use, and water demands.

配水系统的设计要求系统中任何一点的压力保持在最低水平以上，以确保有足够的流量来满足预期需求。最小压力标准通常是为了配水系统的安全运行而设置的，目的是提供所需的流量，以防止运行期间的直接污染。然而，在消防栓快速打开等事件导致的瞬态事件期间，最小压力标准常常会被违反。这里设想了一种可以快速连接到消防栓的便携式控制装置，即使消防人员尽快打开消防栓，也可以将低瞬态压力限制在所需水平。如何设计新型器件并将其应用于瞬态保护是该提案的核心。通过使用该装置，可以在消防栓或阀门操作期间更好地控制供水系统和其他液体系统中的压力，以便水务公司和保险公司可以降低他们所需的最小压力标准。由此产生的超压减少可以通过减少管道破裂频率、泄漏率、系统能源使用和用水需求，为公用事业节省大量运营成本。