| 摘要 |
<p>A thermocouple for use in a gas turbine engine comprises an elongate cylindrical thermocouple element, specifically a mineral-insulated thermocouple element, disposed coaxially inside an elongate cylindrical protective sheath. The sheath defines an annular gap around the thermocouple element, and the element is supported within the sheath by at least one tubular support disposed in the annular gap. The support is a tight sliding fit within the sheath, and its internal diameter is greater than the external diameter of the thermocouple element. To support the element, the support has two spaced apart regions which are swaged to reduce their internal diameter to be a tight sliding fit around the element. The sheath, support and element are brazed together at the ends of them remote from the sensing tip of the thermocouple element. <IMAGE></p> |
