Refrigeration – Refrigeration producer – Evaporator – e.g. – heat exchanger
Patent
1977-10-03
1980-12-30
Capossela, Ronald C.
Refrigeration
Refrigeration producer
Evaporator, e.g., heat exchanger
250261, F25B 1900
Patent
active
042415926
ABSTRACT:
In the specific embodiments of the invention disclosed, a semiconductor radiation detector located in a logging tool sized for passage through a borehole is maintained at cryogenic temperatures by a cryostat housed in the tool. The cryostat includes a cryogen chamber containing a melting-solid type cryogen. Thermal insulation in the form of radiation heat shields and a vacuum chamber surround the cryogen chamber. The integrity of the vacuum insulation is maintained by an active vacuum pump. The pump may be mounted either externally of the cryostat, such that its operation is independent of temperature conditions within the cryostat, or internally thereof, so as to be cooled by the cryogen. Alternatively, a second cryostat may be provided to cool the pump.
REFERENCES:
patent: 2711084 (1955-06-01), Bergan
patent: 3167653 (1965-01-01), Rumble et al.
patent: 3176473 (1965-04-01), Andonian
patent: 3258602 (1966-06-01), Promish
patent: 3306058 (1967-02-01), Keiln
patent: 3424230 (1969-11-01), Wright, Jr.
patent: 3443632 (1969-05-01), Saurer
patent: 3496360 (1970-02-01), Dewan
patent: 3611746 (1971-10-01), Marsing et al.
patent: 3633030 (1972-01-01), Antkiw et al.
patent: 3662566 (1972-05-01), Brand
patent: 3702932 (1972-11-01), Tanner et al.
patent: 3723246 (1973-03-01), Lubin
patent: 3762175 (1973-10-01), Jones
patent: 3807188 (1974-04-01), Lagodmos
patent: 3818715 (1974-06-01), Scurlock
patent: 3851173 (1974-11-01), Taylor
patent: 3851274 (1974-11-01), Solin et al.
patent: 3859523 (1975-01-01), Wilson et al.
patent: 3894403 (1975-07-01), Longsworth
Tanner et al., "A Probe for Neutron Activation Analysis in a Drill Hole Using .sup.252 Cf & a Ge(Li) Detector Cooled by a Melting Cryogen", Nuclear Instruments & Methods 100, pp. 1-7, Apr. 1972.
Senftle et al., Intrinsic Germanium Detector Used in Borehole for Uranium Exploration, Nuclear Instruments & Methods 138, pp. 371-380, 1976.
Capossela Ronald C.
Schlumberger Technology Corporation
LandOfFree
Cryostat for borehole sonde employing semiconductor detector does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cryostat for borehole sonde employing semiconductor detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cryostat for borehole sonde employing semiconductor detector will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1461