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Rotating Equipment Buckled Bellows for Refrigeration Systems

IP.com Disclosure Number: IPCOM000035578D
Publication Date: 2005-Jan-25
Document File: 2 page(s) / 121K

Publishing Venue

The IP.com Prior Art Database

Abstract

This invention provides a means to fabricate a welded sealed bellows assembly that may accommodate twist deflections along its axis. Typical bellows assemblies cannot twist along the axis of the bellows without rapid failure and leakage.

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        Rotating Equipment Buckled Bellows for Refrigeration Systems General Purpose of Invention

This invention provides a means to fabricate a welded sealed bellows assembly that may accommodate twist deflections along its axis. Typical bellows assemblies cannot twist along the axis of the bellows without rapid failure and leakage.

Prior Art

Existing bellows provide a seal with an ability to accommodate flexure in 5 degrees of freedom (excludes the rotational degree of freedom about the bellows axis).

Disadvantages of Prior Art

Existing bellows are known to be very poor at tolerating rotation about their axis. If a bellows is twisted it will rupture and fail with extremely small deflections.

Components, Steps and Operation of Invention

A conventional bellows is mounted in an apparatus that offsets the two ends of the bellows while keeping the end faces parallel to each other.

This concept has been fabricated, tested and demonstrated to operate as claimed here. The assembly permits torsional flex about the bellows axis. A test of this concept was performed to verify torsional moment versus angular deflection data. Also, a test was conducted that flexed a bellows torsionally many thousands of times and checked for leaks. None were found.

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Alternative Embodiment of the Invention

No alternative embodiments are known at this time.

Advantages of the Invention

In any cryogenic electric motor or generator con...