CN-121978310-A - Fuel compatibility verification method and system

CN121978310ACN 121978310 ACN121978310 ACN 121978310ACN-121978310-A

Abstract

The fuel compatibility verification method comprises the steps of selecting any fuel type and test piece material, determining a test temperature, determining a test item for the test piece, wherein the test temperature is the highest temperature of the test piece applied to an aviation product, determining a test item for the test piece, wherein the test item comprises a necessary test item and an optional test item, performing test to obtain a test result, when the material is metal, the test result shows that the test piece is not corroded or discolored, judging that the fuel is compatible with the test piece, and when the material is non-metal, the test result shows that the performance of the non-metal material can still meet the numerical value required by a preset function after compatibility test, and judging that the fuel is compatible with the test piece. A fuel compatibility verification system is also provided. The method and the system can realize automatic design of compatibility tests of different application scenes, processing of compatibility data and conclusion judgment.

Inventors

WANG LIN
WANG CHUNXIAO
SHEN SUHUA
QUE JIANFENG

Assignees

中国航发商用航空发动机有限责任公司

Dates

Publication Date: 20260505
Application Date: 20241031

Claims (12)

1. The fuel compatibility verification method is characterized by comprising the following steps of: selecting any fuel type and test piece material; Determining a test temperature, wherein the test temperature is the highest temperature of the test piece applied to an aviation product; determining test items for the test piece, wherein the test items comprise a mandatory test item and an optional test item; And when the material is a nonmetallic material, the test result shows that the performance of the nonmetallic material can still meet the numerical value of the preset functional requirement after the compatibility test, and the fuel oil is judged to be compatible with the test piece.
2. The fuel compatibility verification method of claim 1, further comprising the steps of: and constructing a matrix related to the fuel types and the materials of the test pieces, and selecting one fuel type and one material of the test piece from the matrix for testing.
3. The fuel compatibility verification method of claim 2, wherein the test of all matching schemes of fuel types and test piece materials in the matrix is completed.
4. The fuel compatibility verification method of claim 1, wherein the mandatory test items include one or more of surface inspection, microscopic inspection, hardness test, volume expansion test, elongation at break test, tensile strength test, peel strength test.
5. The fuel compatibility verification method of claim 1, wherein the selectable test items include one or more of a hardness test, a tensile strength test, a fatigue performance test, a peel strength test.
6. The fuel compatibility verification method of claim 1, wherein the material is metal or rubber or composite material or graphite.
7. The method of claim 1, wherein the fuel type is a new type of fuel not applied to an engine, and a plurality of test results of the new type of fuel with different test piece types and different test piece materials are obtained.
8. The fuel compatibility verification method of claim 7, wherein the plurality of test results are compared with data of the same test piece type and the same test piece material for fuel that has been applied to the engine.
9. The fuel compatibility verification method of claim 1, wherein the material of the test piece is a new material type which is not applied to the engine, and a compatibility test result of the new material and the aeroengine reference fuel is obtained.
10. The fuel compatibility verification method of claim 1, further comprising a risk rating step of: Comparing the test result of the rubber test piece with the fuel compatibility evaluation criterion of the rubber material to judge the risk level, or Comparing the test result of the metal test piece with the fuel compatibility evaluation criterion of the metal material to judge the risk level, or And comparing the test results of the test pieces of other materials except rubber and metal with the fuel compatibility evaluation criteria of other materials, and judging the risk level.
11. The fuel compatibility verification method of claim 1, further comprising a fuel compatibility rating step of: according to the test result, a kind of fuel oil and material are normally used at 150 ℃ and above, and the fuel oil and the material are judged to be I-level compatible; The fuel oil and the material are normally used within the temperature range of 100-150 ℃ and are judged to be compatible with II grade; The fuel oil and the material are normally used in the temperature range from room temperature to 100 ℃, and the fuel oil and the material are judged to be class III compatible; the fuel oil of the type can not be used with the material in room temperature and high temperature environment, and the fuel oil is not compatible with the material.
12. A fuel compatibility verification system for use in performing the aircraft fuel compatibility verification method of any one of claims 1 to 11, the system comprising: the database comprises a temperature list, fuel type information and test piece material information; the functional module comprises a compatibility test control module, wherein the compatibility test control module comprises a fuel verification sub-module, a material verification sub-module and And the editor is used for editing the functional module and the database.

Description

Fuel compatibility verification method and system Technical Field The invention relates to the field of aeroengines, in particular to the field of aviation fuel compatibility tests. Background Fuel compatibility refers to the property of interaction and influence between aviation fuel and the material with which it is in contact, and in general, compatibility is good if the aviation fuel is in contact with the material without chemical reaction or obvious physical influence. On the contrary, after aviation fuel is contacted with the material, obvious corrosion is generated or the fuel quality is changed, so that the compatibility is poor. Poor fuel compatibility can present a non-negligible safety problem for the engine. Currently, aviation engines are made of hundreds of materials, aviation fuels are tens of types, and the types of the engines are numerous. The compatibility verification process is different, so a systematic verification method is needed to systematically verify the compatibility of the aviation fuel. Disclosure of Invention An object of the invention is to provide an aviation fuel compatibility verification method. The fuel compatibility verification method for achieving the purpose comprises the following steps of selecting any fuel type and a material of a test piece, determining a test temperature, wherein the test temperature is the highest temperature of the test piece applied to an aviation product, determining test items aiming at the test piece, wherein the test items comprise necessary test items and optional test items, performing test to obtain test results, when the material is metal, judging that the test piece is not corroded or discolored, judging that the fuel is compatible with the test piece, and when the material is non-metal, judging that the performance of the non-metal material still meets the numerical value of a preset functional requirement after compatibility test. In one or more embodiments, the method further includes the step of constructing a matrix of fuel types and test piece materials, and selecting a fuel type and test piece material from the matrix for testing. In one or more embodiments, the testing of the matrix for all matching schemes for fuel type and test piece materials is accomplished. In one or more embodiments, the mandatory test items include one or more of a surface inspection, a microscopic inspection, a hardness test, a volume expansion test, an elongation at break test, a tensile strength test, a peel strength test. In one or more embodiments, the selectable test items include one or more of a hardness test, a tensile strength test, a fatigue performance test, a peel strength test. In one or more embodiments, the material is metal or rubber or a composite or graphite. In one or more embodiments, the fuel type is a new fuel type that is not applied to the engine, and a plurality of test results of the new fuel and different test piece types and different test piece materials are obtained. On this basis, the test results and the fuel oil applied to the engine are compared with the data of the same test piece type and the same test piece material. In one or more embodiments, the material of the test piece is a novel material type which is not applied to the engine, and a compatibility test result of the novel material and the aeroengine reference fuel is obtained. In one or more embodiments, the fuel compatibility verification method further comprises a risk rating step of comparing the test result of the rubber test piece with a fuel compatibility evaluation criterion of the rubber material to judge the risk level, or comparing the test result of the metal test piece with the fuel compatibility evaluation criterion of the metal material to judge the risk level, or comparing the test result of the other material test pieces except the rubber and the metal with the fuel compatibility evaluation criterion of the other materials to judge the risk level. In one or more embodiments, the fuel compatibility verification method further comprises a fuel compatibility rating step of judging that a fuel and a material are compatible in class I when the fuel and the material are normally used at 150 ℃ or above according to a test result, judging that the fuel and the material are compatible in class II when the fuel and the material are normally used within a temperature range of 100 ℃ to 150 ℃, judging that the fuel and the material are compatible in class III when the fuel and the material are normally used within a temperature range of room temperature to 100 ℃, and judging that the fuel and the material cannot be used in a room temperature and high temperature environment when the fuel and the material are incompatible. The invention further provides a fuel compatibility verification system for carrying out the aviation fuel compatibility verification method, which comprises a database, a functional module and an editor, wherein the database comprise