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Title: Probe with integrated heater and thermocouple pack

Abstract

A probe for measuring heat includes an elongate rod fitted within a sheath, and a plurality of annular recesses are formed on the surface of the rod in a spaced-apart relationship to form annular chambers that are resistant to heat flow. A longitudinal bore extends axially into the rod and within the cylinders defined by the annular chambers, and an integrated heater and thermocouple pack is dimensioned to fit within the bore. In construction, the integrated pack includes a plurality of wires disposed in electrical insulation within a sheath and a heater cable. These wires include one common wire and a plurality of thermocouple wires. The common wire is constructed of one type of conductive material while the thermocouple wires are each constructed of two types of materials so that at least one thermocouple junction is formed therein. All of the wires extend the length of the integrated pack and are connected together at their ends. The thermocouple wires are constructed to form thermocouple junctions proximate to each annular chamber for producing electromotive forces corresponding to the temperature of the rod within the annular chambers relative to outside the chambers. In the preferred embodiment, each thermocouple wire forms two thermocouplemore » junctions, one junction being disposed within an annular chamber and the second junction being disposed outside of, but proximate to, the same annular chamber. In one embodiment two thermocouple wires are configured to double the sensitivity of the probe in one region.« less

Inventors:
 [1];  [2];  [3]
  1. (Oak Ridge, TN)
  2. (Concord, TN)
  3. (Kingston, TN)
Issue Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
OSTI Identifier:
866501
Patent Number(s):
4725399
Assignee:
Delta M Corporation (Oak Ridge, TN) ORNL
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
probe; integrated; heater; thermocouple; pack; measuring; heat; elongate; rod; fitted; sheath; plurality; annular; recesses; formed; surface; spaced-apart; relationship; form; chambers; resistant; flow; longitudinal; bore; extends; axially; cylinders; defined; dimensioned; fit; construction; wires; disposed; electrical; insulation; cable; common; wire; constructed; type; conductive; material; types; materials; junction; therein; extend; length; connected; junctions; proximate; chamber; producing; electromotive; forces; corresponding; temperature; relative; outside; preferred; embodiment; forms; configured; double; sensitivity; region; annular chambers; measuring heat; annular recess; spaced-apart relationship; wires disposed; heat flow; annular chamber; formed therein; conductive material; preferred embodiment; electrical insulation; extends axially; thermocouple wires; thermocouple junctions; wires extend; annular recesses; apart relationship; elongate rod; disposed outside; thermocouple pack; integrated heater; form annular; bore extends; apart relation; rod fitted; spaced-apart relation; thermocouple wire; thermocouple junction; electromotive force; motive force; wire form; /376/136/374/976/

Citation Formats

McCulloch, Reginald W., Dial, Ralph E., and Finnell, Wilber K. R. Probe with integrated heater and thermocouple pack. United States: N. p., 1988. Web.
McCulloch, Reginald W., Dial, Ralph E., & Finnell, Wilber K. R. Probe with integrated heater and thermocouple pack. United States.
McCulloch, Reginald W., Dial, Ralph E., and Finnell, Wilber K. R. Fri . "Probe with integrated heater and thermocouple pack". United States. https://www.osti.gov/servlets/purl/866501.
@article{osti_866501,
title = {Probe with integrated heater and thermocouple pack},
author = {McCulloch, Reginald W. and Dial, Ralph E. and Finnell, Wilber K. R.},
abstractNote = {A probe for measuring heat includes an elongate rod fitted within a sheath, and a plurality of annular recesses are formed on the surface of the rod in a spaced-apart relationship to form annular chambers that are resistant to heat flow. A longitudinal bore extends axially into the rod and within the cylinders defined by the annular chambers, and an integrated heater and thermocouple pack is dimensioned to fit within the bore. In construction, the integrated pack includes a plurality of wires disposed in electrical insulation within a sheath and a heater cable. These wires include one common wire and a plurality of thermocouple wires. The common wire is constructed of one type of conductive material while the thermocouple wires are each constructed of two types of materials so that at least one thermocouple junction is formed therein. All of the wires extend the length of the integrated pack and are connected together at their ends. The thermocouple wires are constructed to form thermocouple junctions proximate to each annular chamber for producing electromotive forces corresponding to the temperature of the rod within the annular chambers relative to outside the chambers. In the preferred embodiment, each thermocouple wire forms two thermocouple junctions, one junction being disposed within an annular chamber and the second junction being disposed outside of, but proximate to, the same annular chamber. In one embodiment two thermocouple wires are configured to double the sensitivity of the probe in one region.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1988},
month = {1}
}

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