Radiation shields for aspirating pyrometers

Details Radiation shields for aspirating pyrometers Radiation shields for aspirating pyrometers

1975-10-08

1977-07-26

Wilbur, Maynard R.

Batteries: thermoelectric and photoelectric

Thermoelectric

Having housing, mounting or support

73349, 136242, H01L 3502

Patent

active

040381056

ABSTRACT:
An improved heat shield for shielding a sheathed thermocouple from heat radiating from or to surrounding bodies having temperatures different from the temperatures of hot gases which are being measured by the thermocouple. The improved shield generally is comprised of two elements, namely, (1) an elongated refractory member having an axially extending central passage for receiving the thermocouple and a plurality of parallel passages surrounding the central passage and (2) a flanged tubular holder for attaching the refractory member to one end of a water cooled probe. The refractory member is constructed of a large diameter thin wall refractory tube which is bonded to the flanged holder and houses a plurality of small diameter thin walled refractory tubes which are bonded to the inner surface of the large tube. The tubes collectively and individually define the central and parallel passages. The inner surface of the flanged tubular holder is provided with an abutment for retaining the large and small tubes in their longitudinally assembled positions relative to each other in case of failure of the bond without blocking the passages defined by the tubes.

REFERENCES:
patent: 2931227 (1960-04-01), Werner et al.
patent: 2970475 (1961-02-01), Werner

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