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一、闸阀管道的自动化装置美国内布拉斯加州的哈斯汀斯灌溉管道公司,制造了一种自动化地面沟灌水力操纵闸阀。这种闸阀上,均安设有自己独特的自动定时装置与蓄(干)电池。应用自动定时装置限定闸阀的开和关,闸阀内的水压是开、关闸阀的动力。当定时器给闸阀送关闭信号时,灌溉水就被引入鼓膜囊。鼓膜囊充水膨胀,就封闭住了管道。同时,灌溉水又被引送到下一个已开通的闸阀。
I. Automation of Gate Valves The Hastings Irrigation Pipeline Company of Nebraska, USA, has manufactured an automated ground furrow irrigation hydraulically operated gate valve. This gate valve is equipped with its own unique automatic timing device and storage (dry) battery. The automatic timing device is used to limit the opening and closing of the gate valve. The water pressure in the gate valve is the power to open and close the gate valve. When the timer sends a closing signal to the gate valve, irrigation water is introduced into the tympanic membrane. The tympanic membrane is filled with water and it seals the tube. At the same time, the irrigation water is again led to the next opened valve.