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报道油田井口装置中的最新专利产品的技术特点、结构原理、应用效果及经济效益。抽油井口随动对中光杆密封器的独特之处是：在抽油机运行过程中能与光杆随动调偏对中，从根本上解决光杆密封器被偏磨而引起的一系列严重问题，并且具有停抽头并及防盗等功能。
Report on the technical features, structural principle, application effects and economic benefits of the latest patented product in wellhead equipment. Oil pumping well head with the smooth rod sealers unique: the pumping unit can run with polished rod servo deviation offset, a fundamental solution to the polished rod seal is partial wear and tear caused by a series of serious problems , And stop stop and anti-theft and other functions.