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Protective system of thermocouple, aircraft engine, and aircraft

A thermocouple, aircraft technology, applied in the direction of machine/engine, engine function, engine components, etc., can solve problems such as low air speed, and achieve the effect of reducing radiant heat flux

Inactive Publication Date: 2018-06-05
AIRBUS OPERATIONS (SAS)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Furthermore, even when the engine compartment is ventilated, the observed air velocities are generally low, making the convective heat transfer resistance not insignificant compared to the radiative heat transfer resistance

Method used

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  • Protective system of thermocouple, aircraft engine, and aircraft
  • Protective system of thermocouple, aircraft engine, and aircraft
  • Protective system of thermocouple, aircraft engine, and aircraft

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Embodiment Construction

[0027] The present invention relates to a system for protecting a thermocouple 14 from disturbing heat exchange, and more specifically, from radiation in the environment 16 in which the thermocouple is located.

[0028] The thermocouple protection system comprises a protection device 12 in the form of a plate 18 . The plate 18 takes any type of shape, eg flat, curved or has a complex geometry. The plate 18 is located between the thermocouple 14 and a radiating element 20 such as, for example, a radiating wall 20 in the environment 16 . Environment 16 may include other radiating elements 20', such as in figure 2 , another wall 20' located on the opposite side of the thermocouple 14 relative to the wall 20. Radiation can be direct, such as figure 2 Radiation emanating from the walls 20, 20' to the thermocouples, depicted by middle arrow A, may be indirect, such as radiation emanating from the walls 20' to the thermocouples after having been reflected by the plate 18 , as i...

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PUM

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Abstract

The invention discloses a protective system of a thermocouple, an aircraft engine, and an aircraft. A thermocouple (14) protection system for protecting a thermocouple (2) placed in an environment comprising at least one radiative element (20, 44) is provided. The thermocouple protection system comprises a plate (18) positioned between the thermocouple (14) and the radiative element (20, 20', 44).The plate (14) has an overall surface condition of an internal face (22) facing towards the thermocouple such that the internal face absorbs radiation coming from the radiative element (20, 20', 44)more than the internal face reflects the radiation.

Description

technical field [0001] This invention relates to the field of air temperature measurements by thermocouples in high radiation environments, and more particularly to systems for protecting thermocouples in such environments to optimize their performance. Background technique [0002] A thermocouple is an assembly having two different metal wires joined at their ends in order to measure the temperature of a given medium using the Seebeck effect. The Seebeck effect is a thermoelectric effect caused by a potential difference at a junction between two metals subjected to a temperature difference. [0003] Such as figure 1 As shown, the thermocouple 1 comprises two cables 2 , 4 of different metals joined together at one of their ends 6 . This junction is called the "hot junction"; and it is this junction that is placed in the environment at the temperature T1 to be measured. The other two terminals 8a, 8b are connected to the terminals of the voltmeter 10; each of these two jun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C7/24
CPCF02C7/24G01K13/02F01D17/085G01K1/08G01K13/024G01K1/12G01K1/20G01K7/04G01K7/10B64D27/20B64D2027/005B64D27/40F01D17/02F05D2260/80G01K1/14
Inventor Y·索默尔
Owner AIRBUS OPERATIONS (SAS)
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