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DIY油田采油机抽油机打夯机科技小制作发明手工益智拼装模型材料

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    kx840 oil extractor(KX840采油机) ¥0.0 9182 box available
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1工作原理

编辑

磕头机即游梁式抽油机是油田广泛应用的传统抽油设备,通常由普通交流异步电动机直接拖动。其曲柄带以配重平衡块带动抽油杆,驱动井下抽油泵做固定周期的上下往复运动,把井下的油送到地面。在一个冲次内,随着抽油杆的上升/下降,而使电机工作在电动/发电状态。上升过程电机从电网吸收能量电动运行;下降过程电机的负载性质为位势负载,加之井下负压等使电动机处于发电状态,把机械能量转换成电能回馈到电网。

2工作的困难性

编辑

然而,井下油层的情况特别复杂,有富油井、贫油井之分,有稀油井、稠油井之别。恒速应用问题显而易见。如抛却这些不谈,就抽油机油泵本身而言,磨损后的活塞与衬套的间隙漏失等都是很难解决的问题,况且变化的地层因素如油中含砂、蜡、水、气等复杂情况也对每冲次抽出的油量有很大的影响。看来,只有调速驱动才能达到佳控制。

引进调速传动后,可根据井下状态调节抽油机冲程频次及分别调节上、下行程的速度,在提高泵的充满系数的同时减少泵的漏失,以获得大出油量。尤其是采用变频调速既无启动冲击,又可解决选型保守、线路较长等所致的功率因数偏低等问题,获得节能增效的同时又能提高整机寿命。尤其是油泵的寿命,减少机械故障提高可靠性

 

Update time:20240827135317


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