Refinery 70% of security incidents are caused by leaking seals, the leakage prevention has been a worldwide problem. Recently, oil from the Northeast Refinery Engineering Co., Ltd. was informed that this problem has been the source of the company’s employees to break Zhao. He presided over the “mechanical seal technology” at the national science and technology awards at the 2008 national scientific and technological progress second prize. 

Zhao was a source of general staff, practitioners of the self-study after the design and installation of mechanical seals, mechanical seal principle, metal materials science, processing and so on. More than a decade, his own measurements, painting their own drawings, modification of the seal. In a set of imported equipment of the United States seals the transformation of its one-for-life from a few days into a year-for-6, while the highest is only for 3 years to create the current world record. Practitioners so far, he has 75 sets of imported equipment of the seals of the 81 had made the transformation, in order to create value more than 2500 million. 

Experts believe that “mechanical seal technology” means that the mechanical seal device of the realization of the domestic and world advanced level, to fill the gap, putting an end to seal the history of relying on foreign imports.

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