Studies on self-induced vibration of automatic pressure regulator and constant flow valve in the semi closed pipeline

半封闭管道自动调压恒流阀自激振动研究

• 批准号: 14560202
• 负责人: INAGAKI Hitone
• 金额: $ 1.92万
• 依托单位: University of Miyazaki
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14560202/
• 关键词: Automatic pressure regulator; Automatic constant flow valve; Semi-closed pipeline; Self-induced vibration; Direct-acting constant flow valve; Safety valve; 固定流量・直動式定流量弁; 可変流量・ダイアフラム式定流量弁; 現地・屋内水理実験; パイプライン; 定量弁

Semi-closed pipeline that combines an automatic pressure regulator with an automatic constant flow valve is introduced with the aim of achieving an optimum solution between the scale of the agricultural pipeline system and water control. This pipe line attempts to reduce excess pressure by the use of the automatic pressure regulator ; it also uses the chloroethene tube.Further, the use of the automatic constant flow valve that is arranged in the downstream can exclude the effect of the extra watershed management located at the end. However, there exists a possibility that the system combining the automatic pressure regulator with the automatic constant flow valve can generate self-induced vibration.When the demonstration was conducted at the site and the condition of self-induced vibration was verified, it was observed that a large self-induced vibration is not generated when the flow is smaller than the setting flow of the direct-acting constant flow valve. On the other hand, when the direct-acting constant flow valve is used near the setting flow, the working mechanism is used to activate the valve using the pipe pressure and the large self-induced vibration can be generated.Further, with regard to the measures to control self-excited oscillation, it is known that self-excited oscillation is not completely restrained by merely blunting the response sensitivity of the automatic pressure regulator.It is also known that when the safety valve installed in the upstream and downstream is of a small scale, the pressure vibration does not damp even if the safety valve is activated.

介绍了一种将自动压力调节器和自动恒流阀相结合的半封闭管道，旨在实现农业管道系统规模与水量控制之间的最佳解决方案。该管线试图通过使用自动压力调节器来降低超压;它还使用氯乙烯管。此外，使用设置在下游的自动恒流阀可以排除位于末端的额外流域管理的影响。但是，自动压力调节器与自动恒流阀组合的系统存在产生自激振动的可能性，在现场进行演示并验证自激振动的条件时，观察到流量小于直动式恒流阀的设定流量时不会产生较大的自激振动。另一方面，当在设定流量附近使用直动式恒流阀时，使用工作机构来利用管道压力致动阀，并且可以产生大的自激振动。此外，关于控制自激振动的措施，众所周知，自仅通过钝化自动压力调节器的响应灵敏度不能完全抑制受激振荡。上下游规模较小，即使安全阀启动，压力振动也不会衰减。

项目成果

奈良大和, 斎藤正樹, 稲垣仁根, 中園健文, 秋吉康弘: "水柱分離を考慮したポンプ送水系パイプラインの設計手法に関する研究"雨水資源化システム学会誌. VOL.9 NO.1. 25-36 (2003)

Yamato Nara、Masaki Saito、Nine Inagaki、Takefum​​i Nakazono、Yasuhiro Akiyoshi：“考虑水柱分离的水泵供水系统管道设计方法研究”雨水资源回收系统学会杂志 VOL.9 NO.1。 -36 (2003)

水柱分離を考慮したポンプ送水系パイプラインの設計手法

考虑水柱分离的水泵供水系统管道设计方法

• 发表时间: 2003
• 期刊: 雨水資源化システム学会誌 VOL.9 NO.1
• 作者: 奈良大和・斎藤正樹・稲垣仁根・中園健文・秋吉康弘

ポンプ急停止時における水柱分離およびスイング式逆止弁による水撃圧抑制の解析とその現地検証

旋启式止回阀突然停泵时水柱分离及水锤压力抑制分析与现场验证

• 发表时间: 2004
• 期刊: 農業土木学会論文集 231号
• 作者: 稲垣仁根・奈良大和・斎藤正樹・中園健文

稲垣仁根, 奈良大和, 斎藤正樹, 中園健文: "ポンプ急停止時における水柱分離およびスイング式逆止弁による水撃圧抑制の解析とその現地検証"農業土木学会論文集. 230号(印刷中). (2004)

九稻垣、奈良大和、齐藤正树、中园武文：“泵突然停止时的水柱分离分析及旋启式止回阀抑制水锤压力及其现场验证”，日本农业土木工程学会汇刊第 10 期。 230（目前正在印刷））（2004）。

Calculations and Field Measurement of Pressure Wave caused by Water Column Separation and Prevention of Water Hammer using Swing Check Valve after Pump Power Failure

水泵停电后水柱分离引起的压力波计算及现场测量及旋启式止回阀防止水锤

• 发表时间: 2004
• 期刊: TRANSACTIONS of The Japanese Society of Irrigation, Drainage and Reclamation Engineering No.231
• 作者: Hitone Inagaki;Yamato Nara;Masaki Saito;Takefumi Nakazono
• 通讯作者: Takefumi Nakazono