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Method for processing swirler and method for validating air flow of swirler

A processing method and air flow technology, which are used in the testing, instruments, and measuring devices of machines/structural parts, etc., can solve the problems of large fluctuation, poor consistency, difficult to guarantee blade shape, thickness and size, and achieve accurate measurement, reduce Machining difficulty and the effect of improving machining accuracy

Active Publication Date: 2020-02-21
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the structure of the vortexer is complex, and the air flow channel is often formed by blades or structures similar to blades. Most of them are manufactured by casting technology. The cavity between the blades forming the air flow channel is formed by carbon core casting. The shape and position of the blades, The thickness dimension is not easy to guarantee
In the production process, due to the existence of thermal processes such as melting and solidification, the difference in melting and solidification results in poor consistency of each batch
The design flow rate in the casting blade flow channel test may be large or small, with large fluctuations, which cannot effectively verify the compliance between the design size and the design flow rate, and affect the delivery of the final product

Method used

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  • Method for processing swirler and method for validating air flow of swirler
  • Method for processing swirler and method for validating air flow of swirler
  • Method for processing swirler and method for validating air flow of swirler

Examples

Experimental program
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Effect test

Embodiment 1

[0042] For a certain type of engine vortex, the material is K536, such as Figure 1-3 Shown, adopt the present invention to carry out the method for verification of theoretical air flow as follows:

[0043] (1) Modeling of vortex generator: use UG for theoretical size modeling

[0044] (2) Determination of the model runner range:

[0045] In this embodiment, a computer is used to construct a theoretical model of flow rate based on dimensional tolerances on the flow channel model of the three-dimensional digital model;

[0046] Maximum flow model: the maximum difference in the height of the flow channel, the minimum value of the blade thickness and the radius of the intake and exhaust.

[0047] The minimum flow model: the minimum height of the flow channel, the maximum blade thickness, and the maximum radius of the intake and exhaust.

[0048] (3) Split the vortex into two parts along the radial section of the part at the position of the flow channel for additive and subtrac...

Embodiment 2

[0056] A certain type of engine has a vortex with a venturi tube, the material is K536, and the method of the present invention is used to verify the theoretical air flow of the vortex. The specific method is as follows:

[0057] (1) Modeling of the vortex: UG is used to model the theoretical size. For the convenience of modeling, the Venturi structure is removed.

[0058] (2) Determination of the range of the flow path of the model: use the computer to construct the theoretical model of the flow rate, the maximum flow model, and the minimum flow model according to the dimensional tolerances on the flow channel model of the three-dimensional digital model.

[0059] Maximum flow model: the maximum difference in the height of the flow channel, the minimum value of the blade thickness and the radius of the intake and exhaust.

[0060] The minimum flow model: the minimum height of the flow channel, the maximum blade thickness, and the maximum radius of the intake and exhaust.

[...

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Abstract

The invention provides a method for processing a swirler and a method for validating air flow of the swirler. The processing method comprises the steps of: 1) modeling a theoretical size of the swirler; 2) determining the range of the runner of the model; 3) splitting the swirler into two parts to perform additive manufacturing or subtractive manufacturing; 4) controlling the flatness, the processing benchmark and the perpendicularity of the splitting surfaces of two splitting pieces when processing the splitting surfaces, and separately processing the split parts; and 5) processing and assembling the splitting pieces according to the model. The validating method comprises the steps of: adjusting and validating the flow data by a standard specimen for several times so that the detection data is consistent with the standard specimen; testing the flow of the maximal air runner by a number of assembly parts; testing the flow of the minimal air runner by a number of assembly parts; comparing the average value with the designed theoretical flow value; validating that the size and the tolerance of the designed structure satisfy the flow requirement if the flow detection average value accords with the designed calculated value; and otherwise, validating that the requirement is not satisfied. By adoption the methods provided by the invention, the swirler can be manufactured and measured rapidly and precisely.

Description

technical field [0001] The invention relates to the field of structural design and performance testing of a vortex, in particular to a method for processing the vortex and verifying the air flow of the vortex, and is especially suitable for the verification of the theoretical air flow of the vortex in the combustion chamber of an aero-engine. Disassemble, use additive and subtractive material processing technology for the air flow channel, quickly manufacture, assemble, and conduct flow test, so as to quickly verify whether the design size of the vortex device meets the design requirements of the air flow. Background technique [0002] For vortexers and vortex parts with venturi tubes, the air flow of the parts is calculated according to the structural size of the parts, and there is a certain deviation from the actual. Moreover, the structure of the vortexer is complex, and the air flow channel is often formed by blades or structures similar to blades. Most of them are manu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M15/00
CPCG01M15/00
Inventor 彭颖温庆华陈贵林吴晓锋汤丽陈娟娟
Owner AECC AVIATION POWER CO LTD
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