谈胶管直径变化对水泵性能的影响

• 作 者: 马保根
• 机 构: 河北沧州地区农机监理所,
• 出 处: 农业机械
• 发表日期: 1991年07期
• 关键词: 胶管 直径 水泵性能 有机户 塑料管 流速 管道阻力 性能指标 扬程 水泵

不少有机户在浇地时,因胶管(或塑料管)损坏,更换了比原直径大的胶管,使用时发现水的流速明显降低。而再换上原胶管时,水的流速又大大提高。因此不敢使用比原直径大的胶管,怕水泵超负荷或影响水泵各项性能指标。其实,胶管直径变化对流速的影响很容易理解。若管道内液体的流量一定,直径变大,则流速降低;

Many organic households in the irrigated, due to the hose (or plastic tube) damage, replaced the hose diameter larger than the original, the use of water flow rate was significantly reduced. And then replaced the original hose, the water flow rate has greatly increased. So dare to use the hose than the original diameter, fear of overload or affect the pump performance indicators. In fact, the hose diameter changes on the impact of flow rate is easy to understand. If the flow of liquid within the pipe is certain, the diameter becomes larger, the flow rate decreases;