游梁式抽油机节能新途径和节能蓄能器

游梁式抽油机效率不理想的根本原因，是其载荷特性和普通电动机工作特性不匹配。以往人们都在改变抽油机载荷特性或发动机工作特性上下功夫，结果有得有失，而且仍难达到抽油机效率的理论值。节能蓄能器利用飞轮蓄能效应，使整机效率达到较理想的数值。叙述了蓄能器在某井抽油机上的应用情况。万余小时的连续运行表明，在同一油井、工况和相同时间下，与未装蓄能器时相比，单位产液量综合有功节电率达１５．３％。

Power-saving accumulator for beam pumping unit

The basic reason that the efficiency of a beam pumping unit is not ideal is that its load characteristic doesn't match with the working characteristic of the conventional electric motor.The power-saving accumulator, making use of the energy-accumulating effect of the flywheel,can be used for improving the efficiency of the whole unit to an ideal value.The field application of the accumulator on a pumping unit is described.A long-period operation shows that,compared with that of an identical beam pumping unit on the same well under the same working conditions,the power consumption for specific production rate is saved by 15.3%.