Temperature measuring device, gas turbine having a temperature measuring device and method for directly determining the temperature in a combustion chamber

A gas turbine, comprising:

• a combustion system, comprising:
• a temperature measuring device, comprising:
• a heat absorbing element disposed in or on the combustion system;
• a measurement end disposed remotely from the combustion system and including, disposed thereon, a temperature sensor measuring a first temperature of the measurement end;
• a heat conducting element which connects the heat absorbing element to the measurement end in a thermally conductive manner;
• and
• a cooling device acting on the heat conducting element in a quantifiable manner for heat removal, and
• wherein the temperature in the combustion system is determined based on the measured first temperature and the heat removed from the cooling device.

A method for directly determining a temperature in a combustion system, in which a first quantity of heat from the combustion system is absorbed, the method comprising:

• absorbing the first quantity of heat by providing a heat absorbing element disposed in or on the combustion system;
• transmitting the first quantity of heat absorbed to a temperature sensor disposed remotely from the combustion system in a thermally conductive manner,
• wherein, during the transmitting, a second quantity of heat is removed from the first quantity of heat so that a third quantity of heat reaching the temperature sensor is reduced by a quantifiable amount compared to the first quantity of heat absorbed;
• and
• determining the temperature in the combustion system from an actual temperature measurement and the second quantity of quantifiably removed heat, and
• wherein the actual temperature measurement is based on the reduced third quantity of heat.