| 摘要 |
An instrumentation and monitoring system for a cryogenic material transfer system incorporates a pipe-in-pipe configuration with either a vacuum or a nanoporous or microporous insulating layer filling the annulus between the inner and outer pipe. The insulating layer is of sufficient flexibility to absorb the expansion or contraction of the inner pipe due to thermal effects from the flow of cryogenic material. The monitoring system typically includes a multitude of fiber optic sensors that measure leaks, temperature, pressure and strain. The invention includes the fiber optic sensors, conventional sensors, cabling, connectors/splice assembles, ingress/egress methods, ruggedization methods, data acquisition and analysis.
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