Patent ID: 6591854
Filing Date: 2003-07-15
Classification: F16K,Y10T

Abstract:
A burst disk assembly for use within a cryostat pressure relieving vent for a superconducting magnet, said vent being attached to the cryostat and connected to an exhaust vent in the enclosure in which the magnet is installed in order to vent cryogenic gas away from the cryostat to the atmosphere outside the magnet in the event of an undesired pressure buildup, comprising:a) a burst disk interposed in and blocking said vent during normal operation of said superconducting magnet, said burst disk selected to burst in the event of a cryogenic gas pressure in said cryostat which exceeds a predetermined pressure in order to open a path between said cryostat and said atmosphere; b) a burst disk capture flange interposed in said vent adjacent said burst disk, said burst disk capture flange forming an annular ring having a central aperture defined within it and having a disk-bearing shoulder forming an arcuate flat having an inner diameter slightly lager than the outer diameter of the burst disk formed about a portion of its periphery; and c) securing means for said burst disk assembly extending substantially parallel to the axis of said vent to apply constant pressure to said assembly to press said burst disk and said burst disk capture flange toward each other.