Combustion press cylinder structure of gas turbine

Abstract

The invention relates to the technical field of gas turbines, and discloses a combustion press cylinder structure of a gas turbine. A combustion press cylinder comprises an outer cylinder and an inner cylinder, wherein the inner cylinder is positioned below the outer cylinder, the inner cylinder and the outer cylinder jointly form a chamber of the combustion press cylinder, a combustion chamber and a plurality of supports for connecting the outer cylinder and the inner cylinder are arranged in the chamber, the supports are distributed along the circumferential direction of the combustion chamber, and an air introducing hole for communicating the outer cylinder and the inner cylinder is formed in at least one support. According to the combustion press cylinder structure, the structure in the chamber is simplified, and cooling air is prevented from influencing the design of the combustion chamber when being introduced, so that air can uniformly enter the combustion chamber in a circumferential direction.

Description

technical field [0001] The invention relates to the technical field of gas turbines, in particular to a combustion pressure cylinder structure of a gas turbine. Background technique [0002] With the continuous innovation and development of modern gas turbine technology, in order to improve the overall thermal efficiency of the gas turbine, the temperature before the turbine continues to rise. As a high-speed rotating part, the turbine blades work in an extremely high temperature environment at the same time. Only relying on the increase of the temperature of the material can no longer meet the actual use requirements. The turbine blades must be cooled in a certain form. The cooling air for turbine rotor blades generally comes from compressor extraction. As the cooling requirements become higher and higher, the demand for air extraction is also increasing, which will lead to a decrease in the thermal efficiency of the gas turbine. [0003] Therefore, a more ideal method is,...

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Problems solved by technology

Because the cooling air needs to pass through the bleed pipe 5, the bleed pipe will inevitably affect the intake and cooling of the combustion chamber 2; the number of the bleed pipe 5 is difficult to be designed to be the same as the number of the combustion chamber 2, so the bleed pipe 5 will also It affects the uniformity of the intake air in the combustion chamber 2 in the circumferential direction, which in turn brings difficulties in the design of the combustion chamber 2

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