公开(公告)号：US4458609A

公开(公告)日：1984-07-10

申请号：US355138

申请日：1982-03-05

申请人： David S. Tofte

发明人： David S. Tofte

IPC分类号： A01C23/02 ,  F28D7/10 ,  F24H1/40

CPC分类号： A01C23/024 ,  F28D7/103

摘要： A method and apparatus for controlling and monitoring the application rate of the anhydrous ammonia to the soil. A heat exchanger is used to maintain the anhydrous ammonia in a liquid state so that a flow control valve coupled to the heat exchanger can accurately control the rate of flow of liquid anhydrous ammonia to a manifold. Separate lines connected to the manifold distribute the liquid anhydrous ammonia to nozzles associated with earthworking tools to incorporate the ammonia into the soil. A portion of the ammonia from the manifold is directed back to an expansion chamber in the heat exchanger. The ammonia in the expansion chamber partially changes from a liquid to a vapor, thereby lowering the temperature of the ammonia in the expansion chamber and transferring heat from the liquid anhydrous ammonia in the heat exchanger to thereby maintain the ammonia in the liquid state. Lines carry the ammonia from the expansion chamber to nozzles associated with earthworking tools to incorporate the ammonia into the soil.

摘要翻译： 一种用于控制和监测无水氨对土壤的施用率的方法和装置。 使用热交换器来将无水氨保持在液态，使得与热交换器连接的流量控制阀可以精确地控制液态无水氨流到歧管的流速。 连接到歧管的独立线将液体无水氨分配到与土方工具相关联的喷嘴中，以将氨并入土壤中。 来自歧管的氨的一部分被引导回热交换器中的膨胀室。 膨胀室中的氨部分地从液体变为蒸汽，从而降低膨胀室中的氨的温度，并且在热交换器中从液态无水氨传递热量，从而保持氨处于液态。 管线将氨​​从膨胀室运送到与土方工具相关的喷嘴，以将氨并入土壤中。