Magnetic fluid sealing structure of vapor compressing distillation device of space station

Abstract

The invention discloses a magnetic fluid sealing structure of a vapor compressing distillation device of a space station. The magnetic fluid sealing structure is arranged on a rotating shaft and an end face which need to be dynamically sealed, and comprises a shell, a sealing part, an end cover and two bearings, wherein the sealing part, the end cover and the two bearings are located in the shelland arranged the rotating shaft in a sleeving mode, the shell is sleeved on the rotating shaft in a sleeving mode, and the first end of the shell is connected with the end face; the sealing part comprises a pole shoe assembly, a left magnetism isolating ring, a right magnetism isolating ring and permanent magnets, and the left magnetism isolating ring and the right magnetism isolating ring are located on the two sides of the pole shoe assembly; the pole shoe assembly comprises at least two pole shoes, a plurality of pole teeth are arranged on the inner circle face of each pole shoe in a protruding mode, sealing gaps are formed between the pole teeth and the rotating shaft, the sealing gaps are filled with magnetic fluid, and the outer circle faces of the pole shoes are in sealing connection with the inner wall face of the shell; the permanent magnets are arranged between every two adjacent pole shoes, and the magnetic poles of the adjacent sides of every two adjacent permanent magnetsare the same; a step for being attached to the left magnetism isolating ring is arranged on the inner wall face of the shell in an inward protruding mode, and the end cover is installed at the secondend of the shell and used for pressing the sealing part; and the bearings are installed in installation grooves concavely formed in the inner circular faces of the pole shoes.

Description

technical field [0001] The invention belongs to the field of aerospace and mechanical engineering sealing, in particular to a magnetic fluid sealing structure of a space station vapor compression distillation device. Background technique [0002] Sealing is a very important technology in the space station. The sealing between the various compartments and the sealing of various equipment in the space station are very important. [0003] The vapor compression distillation unit is the key equipment of the wastewater regeneration system in the space station project organized and implemented by our country, and the key equipment of the urine collection and regeneration treatment system. For the research and application of this equipment, dynamic sealing technology is one of the supporting technologies. A good dynamic seal plays a vital role in the operation performance, stability and reliability of the equipment and the whole machine. At the same time, it also plays a vital role...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a magnetic fluid sealing structure of a space station vapor compression distillation device to solve the problems of high leakage rate, short life and low reliability of the traditional sealing technology used in the vapor compression distillation device in the prior art

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