Flame tube structure of thrust combustion chamber used for supercharger test

Abstract

The invention discloses a flame tube structure of a thrust combustion chamber used for a supercharger test. The flame tube structure includes two parts, namely a flame tube outer casing (1) and a flame tube inner casing (2), and further includes functional structures such as an air film cooling tank structure (3), a nozzle swirler and a second-stage diffuser, wherein a main combustion zone (11), a mixture zone (12), a cooling transition zone I (13) and a cooling transition zone II (14) all of the flame tube inner casing (2) are connected with one another through the novel air film cooling tank structure (3) which is a curve rectangular hole provided with diversion trenches, and the proportion of the air inlet passage sectional area in the sectional area of the film cooling tank structure is larger; the proportion of the air circulation sectional areas of the four zones in the sectional areas of corresponding positions of the flame tube outer casing (1) is larger; and the thickness of both the flame tube outer casing (1) and the flame tube inner casing (2) is 4.5 mm. According to the invention, the structural strength of the flame tube is increased, the formation of carbon deposition is reduced, the economic efficiency of the fuel is improved, the heat dissipation effect of the wall of the flame tube is improved, and the tolerance temperature of the combustion chamber and the flame tube as a whole is improved.

Description

technical field [0001] The invention belongs to the technical field of a thrust combustion chamber for a test, and in particular relates to a thrust combustion chamber flame cylinder structure for a supercharger test. Background technique [0002] The thrust combustor is an important part of the turbocharger test. The unreasonable design of the flame tube will directly affect the dynamic performance of the thrust combustor, and then affect the service life of the combustor and the reliability of the data in the test, which restricts the turbocharger. Device development and test verification requirements. [0003] The current thrust combustors for testing are generally modified from decommissioned aero-engine combustors, and even newly-made thrust combustors are generally processed using the flame tube structure of aero-engines. Due to the difficulty of processing and the restriction of the structure, the flame tube is generally made of thin-walled heat-resistant stainless s...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the current test thrust combustion chamber is unreasonable in structure, which leads to the local overheating of the flame cylinder, which causes the flame cylinder to be subjected to thermoplastic deformation, thereby causing the overall scrapping of the final combustion chamber

Images