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題名 | 噴灌設施的管路沖洗及噴嘴滴漏現象改進之研究 |
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作者 | 林建夫; | 書刊名 | 嘉義農專學報 |
卷期 | 32 1993.03[民82.03] |
頁次 | 頁65-82 |
分類號 | 434.251 |
關鍵詞 | 沖洗; 現象; 防止滴漏; 清洗管路; 噴嘴; 噴灌設施; Spray irrigation system; Pipeline flushing; Leakage; |
語文 | 中文(Chinese) |
中文摘要 | 作物栽培上應用塑膠管做為噴灌及消毒的設施非常地普遍,而噴嘴的 滴漏及管內異物的清除使農友增加了許多困擾。 本試驗中,在噴嘴處裝設背壓閥並且在水幫浦啟動後用限時電驛控制管路末端電 磁閥的關閉時可以達到清洗管路的功能。而背壓閥內適當的彈簧設定壓力可以減 少前滴漏現象。當水幫浦停止之前先行開敢管路末端電磁閥以洩放管路內的流體 則可以達到無後滴漏現象的發生。 |
英文摘要 | Plastic hose used in spray irrigation and sterilization system is the mostcommon device in the area of planting. The main drawback by using plastichose is leakage and tough stains. These are usually the troublesome phenomenain the spray irrigation system. In this study both problems will be solved simultaneously. A back pressurevalve is installed at the nozzle position. After a water pump is running , a timerwill keep the solenoid valve in close position at the end of pipeline. The action ofpipeline flushing occurs during this period. A suitable perssure adjustment onthe spring at the back pressure valve will reduce the leakage to take place. Theleakage at this time is so called pre-leakage and is distinguished with postleakage which occurs after the pump is shut down. If the solenoid valve at the end of pipeline was set in open position and thefluid flowed before the pump was shut down ,the post-leakage would also beprevented. |
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