Simulator manufacturing method suitable for heat loss calibration

Abstract

The invention belongs to the field of heat intensity test full equation control, and particularly relates to a simulation part manufacturing method suitable for heat loss calibration. The method comprises the following steps: step 1, manufacturing a simulation piece frame consistent with a formal test piece in size; 2, performing full-range coverage on the simulation piece frame by adopting a plastic material to obtain a simulation piece consistent with the formal test piece in appearance; 3, determining temperature areas on the simulation piece according to the temperature area distribution of the formal test piece, and forming a mounting groove in the center of each temperature area; 4, mounting a test piece small plate in the mounting groove, wherein the test piece small plate is made of the same material as the formal test piece; and 5, installing a heat flow meter in the installation groove, and pasting a thermocouple on the surface of the test piece small plate. Convection and radiation factors influencing the heat loss are fully considered, the thermal characteristics of the formal test piece can be reflected more truly, the heat loss is calibrated more truly, and the thermal intensity assessment accuracy of the formal test piece is improved.

Description

Technical Field

[0001] The present application belongs to the field of full equation control of thermal strength tests, and in particular relates to a method for manufacturing a simulation component suitable for heat loss calibration. Background Art

[0002] Thermal strength test is a ground simulation test used to evaluate the impact of temperature on the structure of an aircraft during flight. With the rapid development of aircraft, simple temperature or heat flow evaluation of aircraft cannot meet the evaluation requirements, and thus the full equation control evaluation method of thermal test has emerged. At present, full equation control mainly evaluates the thermal performance of missiles, such as missile fuel tanks, warheads and other parts, whose materials contain metals or ablative materials. With the development of hypersonic aircraft, they also need to evaluate thermal strength performance. Full equation control is heat transfer formula calculation control. Through the actual temperature of the test piece surface, the heat flux density of the test piece structure surface is calculated through the heat transfer formula, and then the heat flux density of the test piece surface is accurately controlled to complete the evaluation of the full equation test.

[0003] The heat loss of the test piece is included in the heat transfer calculation formula. The heat loss is the heat flux density required to maintain the temperature when the temperature of the test piece reaches a steady state. The heat loss is caused by the convection and radiation of the test piece, so it is necessary to calibrate the heat loss in the actual test process through experimental means. The accuracy of the heat loss directly affects the assessment results of the full equation control. Due to economic and manufacturing factors, it is impossible to directly calibrate the heat loss of another test piece that is equivalent to the formal test piece. In the current calibration method, considering the production cost and time of the simulation piece during the calibration process, the difference between the simulation piece and the formal test piece is large. Although the simulation dummy with the same appearance and similar surface condition is used, it is impossible to fully consider the factors of convection and radiation, so the heat loss obtained will be greatly deviated from the actual heat loss.

[0004] Therefore, it is hoped that there will be a method for making simulated dummy parts that are closer to the actual test parts to more realistically reflect the thermal characteristics of the formal test parts, and then more realistically calibrate the heat loss and improve the accuracy of the thermal strength assessment of the formal test parts.

[0005] Therefore, it is desired to have a technical solution to overcome or at least alleviate at least one of the above-mentioned defects of the prior art. Summary of the invention

[0006] The purpose of the present application is to provide a method for manufacturing a simulation part suitable for heat loss calibration, so as to solve at least one problem existing in the prior art.

[0007] The technical solution of this application is:

[0008] A method for making a simulation part suitable for heat loss calibration, comprising:

[0009] Step 1: Make a simulation frame with the same size as the formal test piece;

[0010] Step 2: Use plastic material to cover the entire range of the simulation part frame to obtain a simulation part with the same appearance as the formal test part;

[0011] Step 3: determine the temperature area on the simulation piece according to the temperature area distribution of the formal test piece, and open a mounting groove at the center of each temperature area;

[0012] Step 4: Install a small test piece plate in the installation slot, wherein the small test piece plate is made of the same material as the formal test piece;

[0013] Step 5: Install a heat flow meter in the installation groove, and stick a thermocouple on the surface of the test piece small plate.

[0014] In at least one embodiment of the present application, the simulation component frame is made of metal material.

[0015] In at least one embodiment of the present application, in step three, the size of the installation groove is 100*100 mm.

[0016] In at least one embodiment of the present application, in step three, the size of the installation groove is 200*200 mm.

[0017] In at least one embodiment of the present application, in step four, after the test piece small plate is installed in the installation groove, it is flush with the simulation piece.

[0018] In at least one embodiment of the present application, in step five, after the heat flux meter is installed in the installation groove, it is flush with the test piece small plate.

[0019] In at least one embodiment of the present application, the method further includes step six, calculating the heat loss of the simulated component at every 10°C interval based on the feedback results of the heat flow meter and the thermocouple, and calibrating the heat loss during the formal test.

[0020] The invention has at least the following beneficial technical effects:

[0021] The method for producing simulation parts suitable for heat loss calibration in the present application can produce simulation parts used for heat loss calibration in full equation control, fully consider the convection and radiation factors that affect heat loss, and can more realistically reflect the thermal characteristics of the formal test parts, thereby more realistically calibrating the heat loss and improving the accuracy of thermal strength assessment of the formal test parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a flow chart of a method for making a simulation part suitable for heat loss calibration according to one embodiment of the present application;

[0023] Figure 2 is a schematic diagram of a simulation component of an embodiment of the present application;

[0024] Figure 3 It is a schematic diagram of a mounting slot opening method according to an embodiment of the present application;

[0025] Figure 4 This is a schematic diagram of a simulation component after installing a test component small plate, a heat flux meter, and a thermocouple according to an embodiment of the present application.

[0026] in:

[0027] 1-simulation part; 2-installation slot; 3-test part small plate; 4-heat flow meter; 5-thermocouple. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the implementation of this application clearer, the technical scheme in the embodiment of this application will be described in more detail below in conjunction with the drawings in the embodiment of this application. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of this application, not all of them. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain this application, and should not be construed as limitations on this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The embodiments of this application are described in detail below in conjunction with the drawings.

[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present application.

[0030] The following is combined with Figures 1 to 4 This application is described in further detail.

[0031] The present application provides a method for manufacturing a simulation component suitable for heat loss calibration, comprising the following steps:

[0032] Step 1: Make a simulation frame with the same size as the formal test piece;

[0033] Step 2: Use plastic material to fully cover the simulation part frame to obtain a simulation part 1 that is consistent with the appearance of the formal test part;

[0034] Step 3: determine the temperature area on the simulation part 1 according to the temperature area distribution of the formal test piece, and open a mounting groove 2 at the center of each temperature area;

[0035] Step 4: Install the test piece small plate 3 in the installation groove 2. The test piece small plate 3 is made of the same material as the formal test piece;

[0036] Step 5: Install the heat flow meter 4 in the installation groove 2, and stick the thermocouple 5 on the surface of the test piece small plate 3.

[0037] Before the simulation part 1 is manufactured, the formal test part is divided into different temperature zones according to the assessment requirements of the formal test part, and the corresponding heaters are manufactured and processed, so as to carry out the full equation control test assessment.

[0038] The method for making a simulation part suitable for heat loss calibration of the present application firstly, in step 1, according to the size of the formal test part, a simulation part frame with the same size as the formal test part is made to meet the requirement of being proportional to the formal test part. The material of the simulation part frame is generally metal material, which is easy to make and low in cost.

[0039] Secondly, if Figure 2 As shown, in step 2, the simulation part frame is fully covered with plastic material to obtain a simulation part 1 having the same appearance as the formal test part. The plastic material can withstand a certain high temperature and the appearance size does not change.

[0040] Then, if Figure 3 As shown, in step three, the corresponding temperature areas on the simulation part 1 are determined according to the same temperature distribution as the formal test piece, and a groove is opened at the center of each temperature area. In a preferred embodiment of the present application, a mounting groove can be opened at the center of each temperature area, and the opened mounting groove is used to install the test piece small plate 3 and the heat flux meter 4. The size of the opened mounting groove is generally selected from 100*100mm and 200*200mm, which can be selected according to the size of the temperature area. It is understandable that a mounting groove for installing the test piece small plate 3 can also be opened at the center of each temperature area, and another mounting groove of the same size as the heat flux meter 4 can be opened near the mounting groove for installing the heat flux meter 4.

[0041] Further, such as Figure 4 As shown, in step 4, a test piece small plate 3 of the same material as the formal test piece is installed at the slot position, and the test piece small plate 3 is ensured to be flush with the simulation piece 1. In step 5, the heat flow meter 4 is installed in the installation slot and is flush with the test piece small plate 3.

[0042] The method for making a simulation component suitable for heat loss calibration of the present application finally includes step six, calculating the heat loss of the simulation component 1 at every 10°C interval based on the feedback results of the heat flux meter 4 and the thermocouple 5, and calibrating the heat loss during the formal test process.

[0043] The method for making a simulation part suitable for heat loss calibration of the present application can take into account the heat loss caused by convection through the simulation part 1 having the same appearance as the formal test part, and can take into account the heat loss caused by radiation through the test part small plate 3.

[0044] The method for producing simulation parts suitable for heat loss calibration in the present application can produce simulation parts used for heat loss calibration in full equation control, fully consider the convection and radiation factors that affect heat loss, and can more realistically reflect the thermal characteristics of the formal test parts, thereby more realistically calibrating the heat loss and improving the accuracy of thermal strength assessment of the formal test parts.

[0045] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A method for making a simulation part suitable for heat loss calibration, characterized in that: include: Step 1: Make a simulation frame with the same size as the formal test piece; Step 2: Use plastic material to cover the entire range of the simulation part frame to obtain a simulation part with the same appearance as the formal test part; Step 3: determine the temperature area on the simulation piece according to the temperature area distribution of the formal test piece, and open a mounting groove at the center of each temperature area; Step 4: Install a small test piece plate in the installation slot, wherein the small test piece plate is made of the same material as the formal test piece; Step 5: Install a heat flow meter in the installation groove, and stick a thermocouple on the surface of the test piece small plate.

2. The method for making a simulation component suitable for heat loss calibration according to claim 1, characterized in that: The simulation component frame is made of metal material.

3. The method for making a simulation component suitable for heat loss calibration according to claim 1, characterized in that: In step three, the size of the installation groove is 100*100mm.

4. The method for making a simulation component suitable for heat loss calibration according to claim 1, characterized in that: In step three, the size of the installation groove is 200*200mm.

5. The method for making a simulation component suitable for heat loss calibration according to claim 1, characterized in that: In step 4, after the test piece small plate is installed in the installation groove, it is flush with the simulation piece.

6. The method for making a simulation component suitable for heat loss calibration according to claim 5, characterized in that: In step five, after the heat flow meter is installed in the installation slot, it is flush with the test piece small plate.

7. The method for making a simulation component suitable for heat loss calibration according to claim 6, characterized in that: The method further includes step six, calculating the heat loss of the simulated component at every 10° C. interval according to the feedback results of the heat flow meter and the thermocouple, and calibrating the heat loss during the formal test.

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