STATIC SEALING DEVICE FOR LARGE-DIAMETER FLANGE WITH MAGNETIC FLUID SEAL
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United States of America Patent
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Issued Date -
Aug 4, 2011
app pub date -
Jan 13, 2011
filing date -
Feb 3, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A static sealing device for a large-diameter flange with magnetic fluid seal is provided, the device includes a left flange, magnets, a right flange, a large non-magnetic ring, a small non-magnetic ring, screws, bolts, nuts and washers. The large non-magnetic ring (4) is welded into the annular groove of the left flange (1) when installing, the small non-magnetic ring (5) is welded in the deep-hole of the left flange (1), the large non-magnetic ring (4) and small non-magnetic ring (5) are grinded, then bolts (7), washers (8) and nuts (9) are used to fix the left flange (1) and the right flange (3) together, then magnets (2) are embedded in the circumferential space between the left flange (1) and the right flange (2), a magnetic fluid is injected into the gap between the pole teeth of the left flange (1) and the right flange (3) through filling ports, filling ports are screwed into screws (6), so as to form the magnetic fluid seal. This device can be easily assembled in a very short time and has a high seal pressure capability, and a long service life.
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