Refrigeration – Vortex tube – e.g. – ranque
Reexamination Certificate
2006-10-17
2006-10-17
Jiang, Chen Wen (Department: 3744)
Refrigeration
Vortex tube, e.g., ranque
C600S109000, C600S140000, C606S015000, C606S046000, C385S117000
Reexamination Certificate
active
07121098
ABSTRACT:
An inspection system includes a cooling apparatus for conducting visual inspections within operating temperature environments, such as, for example, the interior of a combustion turbine shortly after shut down. The cooling apparatus provides cooling for an inspection probe such as a video borescope. The cooling apparatus includes an articulating guide tube having a control portion, an elongate flexible portion and an articulating section. The video borescope is inserted down through the articulating guide tube. A thermal protective sleeve surrounds and thermally insulates a portion of the articulating guide tube. Vortex coolers circulate cooled, compressed air within the cooling apparatus, thereby maintaining a cool video borescope operating temperature.
REFERENCES:
patent: 4991957 (1991-02-01), Sakamoto et al.
patent: 5096292 (1992-03-01), Sakamoto et al.
patent: 02017024 (1990-01-01), None
Bates, Stephen and Pollack Michael “Gas Cooled Probe Protectors”, Sep. 1999, SPIE vol. 3852, pp. 113-123.
Everest VIT, Inc., XL Pro Videoprobe, “No other inspection tool even comes close . . . ”, Sales Brochure, pp. 1-4.
EXAIR, “A Phenomenon of Physics: How the Vortex Tube Works”, pp. 1-3.
Jiang Chen Wen
Siemens Power Generation, Inc.
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