Turbine engine exhaust gas temperature sensor
A gas turbine engine can include a compressor section, combustor section, and turbine section in serial flow arrangement, with the combustor section having a combustion chamber defining an exhaust gas flow path through which combustion exhaust gas flows. An exhaust gas temperature sensor is located at least partially within the exhaust gas flow path. A housing bounds an interior, a spring located within the interior, and a temperature probe extending through the interior and thermally coupled to the exhaust gas flow path. The spring biases a probe casing of the probe against the housing.
1 . A gas turbine engine comprising:
a compressor section, combustor section, and turbine section in serial flow arrangement, with the combustor section having a combustion chamber defining an exhaust gas flow path through which combustion exhaust gas flows; and
an exhaust gas temperature sensor comprising:
a housing bounding an interior and having a center opening;
a probe casing extending from the housing and movable relative to the housing;
a plunger coupled to the probe casing, the plunger at least partially provided within the interior and extending through the center opening; and
a biasing element biasing the probe casing and the plunger relative to the housing.
2 . The gas turbine engine of claim 1 , wherein the exhaust gas temperature sensor further comprises a probe located within the probe casing and the interior.
3 . The gas turbine engine of claim 2 , wherein the probe is made from a single material.
4 . The gas turbine engine of claim 2 , wherein the housing includes an upper body and a lower body separate from the upper body.
5 . The gas turbine engine of claim 4 , wherein the upper body includes a bottom wall separating the interior into an upper interior and a lower interior.
6 . The gas turbine engine of claim 5 , wherein the bottom wall includes a braze and the probe couples to the braze.
7 . The gas turbine engine of claim 6 , wherein the braze includes a divot facing the lower interior, and a stack extending into the upper interior at least partially defining the braze.
8 . The gas turbine engine of claim 1 , wherein the biasing element positions on the plunger.
9 . The gas turbine engine of claim 8 , wherein the plunger includes a plunger protrusion extending through the opening in the housing and coupling the plunger to the probe casing.
10 . The gas turbine engine of claim 9 , wherein the plunger includes a side wall having a diameter larger than the biasing element.
11 . An exhaust gas temperature sensor for determining a temperature in an exhaust gas flow path, the exhaust gas temperature sensor comprising:
a housing bounding an interior and having a center opening;
a probe casing extending from the housing and movable relative to the housing;
a plunger coupled to the probe casing and extending through the center opening;
a probe located at least partially within the probe casing and the plunger; and
a biasing element biasing the probe casing and the plunger relative to the housing.
12 . The exhaust gas temperature sensor of claim 11 , wherein the probe includes a helical portion located within the biasing element.
13 . The exhaust gas temperature sensor of claim 11 , wherein the plunger located at least partially within the interior.
14 . The exhaust gas temperature sensor of claim 11 , wherein the housing includes an upper body and separate a lower body, and wherein the upper body includes a bottom wall separating the interior into an upper interior and a lower interior.
15 . The exhaust gas temperature sensor of claim 14 , wherein the bottom wall includes a braze and the probe couples to the braze.
16 . The exhaust gas temperature sensor of claim 11 , wherein the probe is made from a single material.