Dynamic sealing structure suitable for high-differential pressure environment

Abstract

The invention discloses a dynamic sealing structure suitable for a high-differential pressure environment, which is used for dynamic seal between a rotor and stators in the high-differential pressureenvironment. The stators include a first stator and a second stator, an antithrust positioning block is arranged on the rotor, the antithrust positioning block is located in a radial groove between the first stator and the second stator and comprises a radial electromagnetic bearing, an antithrust electromagnetic bearing and a magnetic fluid sealing device, the radial electromagnetic bearing sleeves the stators and is located between the stators and the rotor, the magnetic fluid sealing device sleeves the stators and is located between the stators and the rotor, and the antithrust electromagnetic bearing is arranged on the stators and is located in the radial groove. Because the electromagnetic bearing technique is introduced, the problems of conventional bearing grease lubrication and thelike are solved, and the problems of pollution of oil gas to high-pressure media and the like are solved; additionally, a magnetic fluid sealing technique is adopted, so that zero leakage or less leakage of the high-pressure media in the whole high-pressure system is guaranteed, and the purposes of support of the rotor in the high-pressure system and dynamic seal between the rotor and the statorsare achieved.

Description

technical field [0001] The invention relates to the technical field of the layout of a supporting dynamic sealing structure under a high pressure difference environment, in particular to a dynamic sealing structure suitable for a high pressure difference environment. Background technique [0002] The efficient and reasonable utilization of energy has always been a hot spot in the field of energy and power. The high-pressure closed cycle system has attracted great attention at home and abroad due to its high cycle efficiency, strong comprehensive energy management ability, compact structure, small size, and light weight. Power system, hypersonic vehicle power system, hypersonic vehicle energy integrated management system and other fields. [0003] The supercritical carbon dioxide / water cycle power generation system used in ground power generation and ship / submarine integrated power system has a cycle thermal efficiency much higher than that of existing gas turbines under the...

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Problems solved by technology

[0006] In view of this, the purpose of the present invention is to provide a dynamic sealing structure suitable for high-pressure differential environments, so as to overcome the difficulties in cooling and lubrication and support caused by the use of conventional sliding / rolling bearings for the inner rotors in existing high-pressure systems. The problem of complex dynamic sealing structure

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