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1.合理配套指标从使用经济性出发,检查水泵配套是否合理,主要依靠经济指标进行衡量。即每千瓦小时或每马力小时提水多少吨·米,或者每提水1000吨·米所消耗的电能或油料多少为标准。电动机作动力时,电动机输入功率N入: N_入=N_效/η·1/η电·1/η传即 N_效=N_入·η·η_电·η_传式中:η—水泵效率,η电—电机效率,η传—传动效率,计算时,取η电=0.88(满载),η传=1(直联),η=0.6～0.8。千瓦小时换算成提水吨·米: 102公斤·米/秒×3600秒=367.2吨·米电动机输入功为一千瓦小时提水吨·米: η=0.6时,367.2×0.6×0.83×1=194.3(吨·米)
1. Reasonable supporting indicators Starting from the use of economy, check the pump is reasonable, mainly rely on economic indicators to measure. That is, how many tons of water per kilowatt-hour or per horsepower hour, or 1000 tons of water per meter. Motor power, the motor input power N into: N_ into = N_ effect / η · 1 / η electricity · 1 / η pass N_effect = N_ into · η · η_ electric · η_ transmission type : η-pump efficiency, η electric-motor efficiency, η transmission - transmission efficiency, calculation, take η electricity = 0.88 (full load), η pass = 1 (direct connection), η = 0.6 ~ 0.8. Kilowatt-hour conversion to pumping tons of rice: 102 kg · m / s × 3600 seconds = 367.2 tons · M motor input work is one kilowatt-hour water lifting tons · m: η = 0.6, 367.2 × 0.6 × 0.83 × 1 = 194.3 (tons · m)