Ladder Cooling Reactor Magnetic Liquid Sealing Device

A magnetic liquid and sealing device technology, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of easy failure and short service life of magnetic liquid seals, and achieve the effect of improving cooling efficiency, reducing space temperature, and reducing liquefaction
CN106402401BInactive Publication Date: 2018-02-16BEIJING JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING JIAOTONG UNIV
Publication Date
2018-02-16
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides a step-cooling magnetic liquid sealing device for a reactor and belongs to the field of mechanical engineering sealing. The problem that when an existing magnetic liquid sealing device is used on a reactor, the sealing device is short in service life and prone to failure due to the corrosion effect of organic solvent vapor in the reactor on magnetic liquid is solved. The step-cooling magnetic liquid sealing device is composed of a magnetic liquid sealing assembly, a movable ring (2) and a fixed ring (4). When the step-cooling magnetic liquid sealing device is applied to reactor sealing, the movable ring (2) is placed in a pyramid mode with the large end face facing downward, the fixed ring (4) is placed in an inverted-funnel mode with the large end face facing upward, the movable ring (2) and the fixed ring (4) form a stepping labyrinth, and liquidation of organic solvent vapor and decrease of space temperature between the fixed ring (4) and pole shoes are facilitated; and the upper end face of the fixed ring (4) inclines towards a rotary shaft (16), the lower end face of the first pole shoe (8) is in an inverted-T shape, and fixed ring cooling liquid is 5-10 DEG C lower than the pole shoes in temperature. According to the step-cooling magnetic liquid sealing device, the problem that the sealing device is short in service life due to the corrosion effect of the organic solvent vapor on the magnetic liquid is solved.
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Description

technical field

[0001] The invention belongs to the field of mechanical engineering sealing and is suitable for magnetic liquid sealing of reaction kettles. Background technique

[0002] Magnetic liquid seals are widely used due to their advantages of zero leakage, long life, and low friction. When used in a reactor, due to the corrosive effect of the organic solvent vapor in the reactor on the magnetic liquid, the sealing device has a short life and is prone to failure; at the same time, because the reactor is a high-temperature space, the pole shoe has a cooling device, the temperature is low, and the organic Solvent vapor is easy to liquefy on the pole piece, which accelerates the failure of the magnetic liquid and leads to the failure of the seal. Existing magnetic liquid sealing device such as a magnetic liquid rotary sealing device announced by application publication number CN102182830A, said device is provided with a labyrinth spiral sealing groove on the inner hole...

Claims

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