MULTI-ZONE THERMAL CONVERTER Russian patent published in 2018 - IPC G01K13/02 G01K7/02 

FIELD: oil and gas industry; measurement technology.

SUBSTANCE: invention relates to gas dynamics and can be used to measure temperature field of gas flow moving at high speed, particularly in gas turbine installations and in bench systems. Well-known multi-zone thermal converter comprising at least three cable thermal couples in form of thermocouple wires working junctions, each of thermal couples is mounted in protective cover and connected to assembly fixed to bracket, each subsequent working junction is spaced from previous one at the same distance, at suggestion for measuring high-temperature gas flow field it is provided with additional tubular bodies, each cable thermal couple in protective cover is enclosed in tubular body, bodies are serially connected in one plane to assembly, and on the side surface of each tubular body at location of working junction, holes in direction of gas flow are made, while the ratio of distance between holes to diameter of tubular body is 3–7, and distance between protective cover of thermal couple and tubular body is not more than 0.3 mm. Tubular bodies from working junction may be muted, as thermal converter contains junctions in form of chromel-alumel thermocouple wires, and tubular bodies are made of steel 23HN18 or KhN78T.

EFFECT: expansion of high-temperature measurement interval to temperature of 1,450 °C, increase accuracy of measurements, increase period of failure-free operation for more than 2 years with repeated use to measure temperature field of high-temperature gas flow.

4 cl, 2 dwg