Multi-tubular fluid transfer conduit

Abstract

A fluid transfer system having improved stress accommodation properties and thermal insulation properties is provided. The fluid transfer system includes a fluid transfer conduit comprising a plurality of concentric tubes configured to divide and distribute an axial stress induced in the fluid transfer conduit to each of the tubes and a vacuum cavity between the fluid transfer conduit and a structural support of the fluid transfer system to insulate fluid from a surrounding environment.

Description

Technical field [0001] The present invention relates generally to a fluid transfer device, and more particularly to a fluid transfer conduit configured for effective thermal insulation and receiving structural stress. Background technique [0002] Generally, fluid transfer devices, such as tubular conduits, are subject to mechanical stress, such as thermal expansion due to external forces. In the tubular duct structure, the tensile force along the tube axis caused by thermal expansion at the end of the tubular duct generates tensile stress in the duct structure, while the thrust generates compressive stress. Generally, excessive such stress causes structural failure of the catheter. In addition, in certain applications, heat transfer between the fluid flowing through the conduit and the surrounding environment may be problematic. For example, it has become a challenge to insulate the steam pipe to reduce the heat loss of the steam as it flows through the duct. [0003] Fluid tra...

AI Technical Summary

Problems solved by technology

However, the evolution of gas turbines is such that the temperature and pressure of the compressor discharge air rises considerably so that thermal protection of the fuel becomes even more than a design challenge

For many applications, it has been found that a conventional single insulated fuel gap filled with an air-fuel-coke mixture does not provide adequate thermal protection of the fuel as required by engine manufacturers

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