A double piston rotary pump, plunger and pump barrel and plunger is at least two sections, each section joint is screwed with each other through the plunger, and the lower end of the plunger in the whole sequentially connected with thruster and centering mechanism; the main pump plunger in cylinder sleeve with lateral, joint and centering mechanism of main pump tube ends the main pump cylinder upper cover and piston thruster, all centering mechanism, and continue to connect the pump barrel of the pump cylinder by thruster thruster, rotary shaft connected with the sucker rod joint, the cylinder thruster built-in pump cylinder outlet valve; the outer pump barrel is sheathed on the main pump cylinder, through a joint respectively. With the main pump barrel is sheathed outside the two port, the main pump cylinder sleeve with the pump barrel and the upper end of the thruster and other components; a pump barrel connector set in the pump cylinder head; the plunger connected to the lower end and then fixed thruster valve assembly; the lower end of the pump barrel and plunger and push down The lower end of the utility model is fixedly connected with a fixed valve assembly and a lower thruster outer pipe by a tail pipe fixing valve joint; a plunger body centering mechanism is arranged between each section plunger.
【技术实现步骤摘要】
【技术保护点】
一种双柱塞自旋转抽油泵，包括有柱塞及外套的泵筒，其特征在于： 所述的柱塞至少为两节以上，各节之间通过柱塞接头相互螺接，在整体柱塞的上端及下端分别联有柱塞上、下推力器；在柱塞的上端与上推力器接头管内腔中置有出油阀，在上、下柱塞推力器的外 侧有定心机构； 所述的泵筒为两层： 内层的主泵筒套于柱塞外侧，两端带有泵筒上、下接头及主泵筒定心机构，主泵筒上端含盖了全柱塞及柱塞的推力器及定心机构，并由泵筒上接头继续向上连接一泵筒推力器，该泵筒推力器经旋转轴部件与外接抽油杆的 抽油杆接头连接，在泵筒推力器内置泵筒出油阀偶件； 外层的外泵筒套于主泵筒外侧，通过...
【技术特征摘要】
【专利技术属性】
技术研发人员：焦在魁，鲁广立，
申请(专利权)人：焦在魁，鲁广立，
类型：发明
国别省市：11[中国|北京]
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