Detection method for cooling slot gap of flame tube of engine
A detection method and flame tube technology, which is applied in the field of aero-engines, can solve problems such as inability to reflect the real state of the flame tube, difficulty in detection implementation, and flame tube ablation, and achieve the effects of avoiding non-processing damage, strong adaptability, and avoiding damage
Active Publication Date: 2019-04-16
AECC SICHUAN GAS TURBINE RES INST
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Problems solved by technology
[0005] Aiming at the difficulty of using a standard feeler gauge to detect the exposure of the cooling slot gap during the processing of a certain type of engine flame cylinder in China, the error is large, which cannot reflect the real state of the flame cylinder, resulting in the problem of local ablation of the flame cylinder
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[0024] Attached below Figure 1-3 And the specific embodiment introduces the present invention in detail. figure 1 It is a schematic diagram of the measuring tool structure for the flame cylinder cooling slot gap, which describes the relative positional relationship and structural shape of the spherical structure 1 for testing, the flexible wire 2 and the spherical end 3 of the flexible wire; figure 2 It is a schematic diagram of the axial simulation of the test tool to detect the slot gap of the flame tube, which describes how the spherical structure 1 passes through the slot and the flexible guidance of the wire 2; image 3 It is a schematic diagram of the circumferential simulation of the measuring tool detecting the slot gap of the flame tube, which describes the selection of the circumferential position and the detection track of the spherical structure 1 when testing the slot gap.
[0025] The detection method of the cooling slot gap of the flame cylinder is mainly car...
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The invention provides a detection method for a cooling slot gap of a flame tube of an engine. A detection tool kit adopted in the detection method comprises at least two detection tools, each of at least two detection tools comprises a flexible wire rod and a spherical structure which is attached to the flexible wire rod, and the spherical structures of different detection tools have different size specifications. The detection method comprises the following steps that two detection tools are selected from the detection tool kit, the diameter difference of the spherical structures of the twodetection tools is equal to a tolerance zone of an allowable value of the slot gap to be detected; and by dragging the flexible wire rods, the spherical structures of the two detection tools are madeto try passing through the slot gap to be detected.
Description
technical field [0001] The invention belongs to the field of aero-engines, and the similar structures of gas turbine engine flame cylinders such as ships and ground gas turbines can also be referred to for implementation, and is a detection method suitable for cooling slot gaps of engine flame cylinders. Background technique [0002] The function of the main combustion chamber of an aero-engine is to convert the chemical energy of the fuel into the thermal energy of the gas through combustion, increase the total enthalpy of the gas, and improve the ability of the gas to expand and do work in the turbine and tail nozzle. When the main combustion chamber is working, the fuel supplied from the fuel system is mixed with the high-pressure air from the compressor and decelerated and boosted by the diffuser to form a combustible mixture, which is ignited by the ignition system and fully and effectively carried out in the flame tube. of burning. As the hot-end part in direct contac...
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IPC IPC(8): G01B5/14
CPCG01B5/003G01B5/14
Inventor 刘韬苏廷铭杨小平李银怀彭毓
Owner AECC SICHUAN GAS TURBINE RES INST