Gas turbine engine combustor performance test sample and gas sampling probe thereof

Abstract

The invention discloses a gas turbine engine combustor performance test sample and a gas sampling probe thereof. The gas sampling probe comprises an installing base, a sample gas conveying pipe, a sample gas mixing pipe, a sampling part, a water inlet pipe, a water return pipe and a driving device; the first end of the sample gas mixing pipe is rotationally connected with the sample gas conveying pipe in a sealed mode, and the second end of the sample gas mixing pipe stretches into the sampling part; the sampling part comprises a closed shell, multiple gas entraining pipes and spacers, wherein the closed shell is installed on the installing base, the gas entraining pipes are arranged close to the second end and are connected to different longitudinal positions of the sample gas mixing pipe, and the tail ends of the spacers extend to the positions nearby the gas inlet ends of the gas entraining pipes; cooling water is introduced into the closed shell through the water inlet pipe, the cooling water obtained after heat exchange is led out of the closed shell through the water return pipe, and the water inlet pipe and the water return pipe are located at the two sides of the spacers respectively; the driving device drives the installing base to drive the sampling part and the sample gas mixing pipe to rotate around the axis of the sample gas conveying pipe. Sampling authenticity and representativeness are improved.

Description

technical field [0001] The invention relates to nuclear power plant equipment, in particular to a gas sampling probe for a gas turbine engine combustor performance test piece and a gas turbine engine combustor performance test piece with the gas sampling probe. Background technique [0002] In the gas turbine engine combustor performance test, it is necessary to use a gas sampling probe to sample the high-temperature gas at the outlet of the combustor to analyze the concentration of the corresponding gas components, and obtain performance parameters such as engine combustion efficiency, residual gas coefficient and temperature. In the process, it is necessary to ensure the authenticity and representativeness of the gas taken as much as possible, so as to improve the accuracy of the relevant performance parameters of the engine. [0003] Gas sampling probes in the prior art mainly adopt a gas-cooled design or a fixed water-cooled design. [0004] When the gas sampling probe ...

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Problems solved by technology

[0004] When the gas sampling probe in the prior art is cooled by gas, the cooling is not sufficient in the high-temperature gas environment at the outlet of the combustion chamber, which makes the sampling probe easy to ablate and can only be used for a short time, and the chemical reaction of the gas in the probe It cannot be frozen quickly, thus affecting the authenticity of the gas taken (gas continues to undergo chemical reactions in the bleed pipe, etc., and the concentration of components changes); and for fixed water-cooled gas sampling probes, due to space constraints, gas sampling The probe is fixedly installed, and it is not possible to perform multi-point sampling in the circumferential and radial direction of the combustion chamber outlet, which affects the representativeness of the gas taken

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