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Preparation method of ceramic matrix composite pulse detonation engine combustion chamber

A composite material and pulse detonation technology, which is applied in combustion methods, combustion chambers, combustion equipment, etc., can solve problems such as molding, difficult combustion chamber shells and spiral bodies, and achieve the effect of improving temperature resistance and ensuring dimensional accuracy

Active Publication Date: 2022-02-18
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the above-mentioned technical problems, the object of the present invention is to provide a preparation method of a ceramic matrix composite material pulse detonation engine to solve the difficulty in the prior art when using a ceramic matrix composite material to prepare a pulse detonation engine. and the problem of direct molding of helicoids

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  • Preparation method of ceramic matrix composite pulse detonation engine combustion chamber
  • Preparation method of ceramic matrix composite pulse detonation engine combustion chamber
  • Preparation method of ceramic matrix composite pulse detonation engine combustion chamber

Examples

Experimental program
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Effect test

Embodiment 1

[0047] A ceramic matrix composite pulse detonation engine combustion chamber, the preparation method of which comprises the following steps:

[0048] (1) Process split

[0049] Taking the cylinder inner circle of the combustion chamber shell as the reference, stretching along the cylinder axis, the spiral structure in the design model is divided into separate solid models, that is, the three-dimensional model of the combustion chamber shell 11 and the spiral body 10 is obtained;

[0050] (2) Mold preparation

[0051] Using high-purity graphite as the raw material, the molds are designed and prepared according to the structure and shape of the three-dimensional models of the combustion chamber shell 11 and the spiral body 10. The combustion chamber shell mold includes an inner membrane 1, an outer mold, a flange 3 and a connecting piece 4, The outer mold is composed of two outer mold segments 2 with connecting holes. The spiral body mold 6 is a cylindrical structure with a spi...

Embodiment 2

[0061] A ceramic matrix composite pulse detonation engine combustion chamber, the preparation method of which comprises the following steps:

[0062] (1) Process split

[0063] Taking the cylinder inner circle of the combustion chamber shell 11 as the reference, stretching along the cylinder axis, the structure of the spiral body 10 in the design model is divided into separate solid models, that is, the three-dimensional model of the combustion chamber shell 11 and the spiral body 10 is obtained ;

[0064] (2) Mold preparation

[0065] Using high-purity graphite as the raw material, the molds are designed and prepared according to the structure and shape of the three-dimensional models of the combustion chamber shell 11 and the spiral body 10. The combustion chamber shell mold includes an inner membrane 1, an outer mold, a flange 3 and a connecting piece 4, The outer mold is composed of two outer mold segments 2 with connecting holes, and the spiral body mold 6 is a cylindri...

Embodiment 3

[0075] A ceramic matrix composite pulse detonation engine combustion chamber, the preparation method of which comprises the following steps:

[0076] (1) Process split

[0077] Taking the cylinder inner circle of the combustion chamber housing 11 as a reference, stretching along the axial direction of the cylinder, dividing the spiral structure in the design model into separate solid models, that is, obtaining the three-dimensional model of the combustion chamber housing 11 and the spiral body 10;

[0078] (2) Mold preparation

[0079] Using high-purity graphite as the raw material, the molds are designed and prepared according to the structure and shape of the three-dimensional models of the combustion chamber shell 11 and the spiral body 10. The combustion chamber shell mold includes an inner membrane 1, an outer mold, a flange 3 and a connecting piece 4, The outer mold is composed of two outer mold segments 2 with connecting holes. The spiral body mold 6 is a cylindrical s...

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Abstract

The invention discloses a preparation method of a ceramic matrix composite pulse detonation engine combustion chamber. The method comprises the following steps: respectively preparing fiber preforms of a combustion chamber shell and a spiral body; then preparing an interface layer and a silicon carbide ceramic matrix layer on the surface of the fiber preform, and processing the structures to a designed size to obtain the ceramic matrix composite combustion chamber shell and the spiral body; and inserting the spiral body into the combustion chamber shell according to the design requirement, forming a through hole in the contact portion of the spiral body and the combustion chamber shell, then inserting a pin into the through hole for homogeneous connection, machining the structure to the design size, and performing damage repairing to manufacture the ceramic matrix composite pulse detonation engine combustion chamber. The temperature resistance of the prepared ceramic matrix composite pulse detonation engine combustion chamber is greatly improved, and meanwhile the weight of the ceramic matrix composite pulse detonation engine combustion chamber can be remarkably reduced.

Description

technical field [0001] The invention relates to the technical field of detonation engine preparation, in particular to a method for preparing a combustion chamber of a ceramic matrix composite material pulse detonation engine. Background technique [0002] The pulse detonation cycle has the characteristics of high cycle efficiency and self-pressurization in the combustion process, and is considered to be a thermodynamic cycle method that is most likely to replace the traditional medium-pressure cycle of a turbine engine and become the next-generation engine. The pulse detonation engine is a new type of power device using the pulse detonation cycle. It uses the pulse detonation combustion chamber to replace the isobaric combustion chamber (including the main combustion chamber and the afterburner) in the traditional turbine engine, thereby converting the traditional The isobaric cycle in the turbine engine is transformed into a pulse detonation cycle, which can greatly improv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/573C04B35/577C04B35/622C04B35/80C04B35/628F02K7/02F23R3/00
CPCC04B35/573C04B35/622C04B35/80C04B35/62873C04B35/62884C04B35/62868F02K7/02F23R3/007C04B2235/614C04B2235/77C04B2235/9607C04B2235/5248C04B2235/5244C04B2235/5256Y02T50/60
Inventor 刘小冲刘持栋付志强穆阳阳成来飞
Owner NORTHWESTERN POLYTECHNICAL UNIV