A high-temperature heat exchange and flow resistance characteristic test device
Patent Information
- Application Number
- CN202522330392.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-03
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-11-03
AI Technical Summary
而现有技术一般都是在常温下进行试验，并通过工程经验估算高温环境下流阻，但冷却介质在高温下物化性质与常温差别较大，其运动黏性、相变等对结构流阻特性有着重要影响，且热结构在冷却介质作用下的温度上升是一个持续过程，使用工程估算会出现结果失真，从而影响试验结果准确性
[0014]本实用新型的有益效果是，能够为试验件提供更接近实际工况的高温试验环境，使试验件能够在高温条件下通入冷却介质进行换热及流阻特性测试，避免常温试验通过工程估算带来的误差，提高换热及流阻特性试验结果的准确性。安装模块可拆卸设计，便于试验件快速设置在箱体内部，提高试验效率。缺口一和缺口二可供试验管路从箱体内部伸出并连接介质供应设备，同时安装模块的分隔设置，形成的腔体二可作为试验管路和部分的线缆的布置空间，并降低试验所需的高温腔体积，利于提高加热速率及减少热量的浪费。
Smart Images
Figure CN224906335U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of aerospace thermal structure performance testing technology, specifically relating to a high-temperature heat transfer and flow resistance characteristic testing device. Background Technology
[0002] In aerospace and other engineering fields, thermal structures are subjected to combined loads from extreme forces, heat, and other multi-physical fields throughout their service life. For example, engine combustion chambers must withstand temperatures of 1400°C, and the surface temperature of aircraft can reach 1000-1650°C, with localized high-temperature areas potentially exceeding 2000°C. To ensure that thermal structures meet operational requirements, it is necessary to verify the flow resistance characteristics of the cooling medium flowing within them. However, current technologies generally conduct tests at room temperature and estimate flow resistance under high-temperature conditions based on engineering experience. But the physicochemical properties of the cooling medium at high temperatures differ significantly from those at room temperature; its kinematic viscosity and phase transitions have a significant impact on the structural flow resistance characteristics. Furthermore, the temperature rise of the thermal structure under the influence of the cooling medium is a continuous process, and using engineering estimations can lead to distorted results, thus affecting the accuracy of the test results. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a high-temperature heat transfer and flow resistance characteristic testing device that can provide a high-temperature testing environment that is closer to the actual working conditions for the test specimen, improve the accuracy of heat transfer and flow resistance characteristic test results, and improve the testing efficiency.
[0004] This utility model includes a housing and an installation module. One side of the housing has a door. The installation module is detachably installed inside the housing and divides the interior of the housing into two chambers. A heating module is installed inside the first chamber. The side of the installation module facing the first chamber is used to install the test specimen. The housing has a notch 1 corresponding to the area of the second chamber, and the installation module has a notch 2 on the side facing the second chamber. The notch 1 and notch 2 are used for the test pipes connected to the test specimen to extend out.
[0005] Furthermore, the side of the housing corresponding to the cavity two and the mounting module is open, and the notch one is located at the edge of the open side of the housing.
[0006] Furthermore, there are four notches, which correspond to the three sides of the open side of the box and one side of the door.
[0007] Furthermore, the box door is provided with an observation window in the area corresponding to the cavity.
[0008] Furthermore, the enclosure includes an outer shell layer, a metal frame, and a heat-insulating inner layer arranged sequentially from the outside to the inside. The heating module is disposed on the heat-insulating inner layer and faces the mounting module. The cables of the heating module are arranged in the hollow area of the metal frame.
[0009] Furthermore, a temperature feedback module is also provided inside the cavity, and the temperature feedback module is located on the side of the mounting module used to mount the test piece and / or on the heat insulation inner layer.
[0010] Furthermore, the installation module is inserted inside the housing.
[0011] Furthermore, the installation module is equipped with heat insulation components to reduce the transfer of heat from cavity one to cavity two.
[0012] Furthermore, the installation module includes an adapter and an installation plate. When installing the test piece, the test piece is fixed to the heat insulation component and the adapter, with the heat insulation component located between the test piece and the adapter. The adapter is fixed to the installation plate, and the notch 2 passes through the heat insulation component, the adapter, and the installation plate.
[0013] Furthermore, it also includes a measurement module for placement on the test specimen and / or test pipeline.
[0014] The beneficial effects of this invention are that it provides a high-temperature testing environment for the test specimen that more closely resembles actual working conditions, allowing the specimen to undergo heat exchange and flow resistance characteristic testing under high-temperature conditions by introducing a cooling medium. This avoids errors caused by engineering estimations in room-temperature tests, improving the accuracy of heat exchange and flow resistance characteristic test results. The detachable design of the mounting module facilitates quick placement of the test specimen inside the chamber, improving testing efficiency. Notches one and two allow test pipelines to extend from inside the chamber and connect to the medium supply equipment. Simultaneously, the partitioned design of the mounting module creates cavity two, which can serve as space for the arrangement of test pipelines and some cables, reducing the volume of the high-temperature chamber required for testing, thus improving the heating rate and reducing heat waste. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of the high-temperature heat exchange and flow resistance characteristic test device of this utility model.
[0016] Figure 2 This is a longitudinal cross-sectional schematic diagram of the high-temperature heat exchange and flow resistance characteristic test device of this utility model.
[0017] Figure 3 This is a schematic diagram of the installation module being extracted according to this utility model.
[0018] Figure 4 This is a schematic diagram showing the test specimen of this utility model connected to the test pipeline.
[0019] Figure 5 This is a schematic diagram showing the measurement module included in this utility model.
[0020] Figure 6 This is a schematic diagram of the first combination of the high-temperature heat exchange and flow resistance characteristic test device of this utility model in use.
[0021] Figure 7 This is a schematic diagram of the second combination of the high-temperature heat exchange and flow resistance characteristic test device of this utility model.
[0022] Figure 8 This is a schematic diagram of the third combination of the high-temperature heat exchange and flow resistance characteristic test device of this utility model in use.
[0023] Figure 9 This is a schematic diagram of the test system of this utility model.
[0024] In the diagram: 100. High-temperature heat exchange and flow resistance characteristic test device; 1. Chamber; 11. Outer shell layer; 12. Metal frame; 13. Inner insulation layer; 14. Cavity 1; 15. Cavity 2; 16. Notch 1; 2. Door; 21. Observation window; 3. Installation module; 31. Insulation component; 32. Adapter tooling; 33. Mounting plate; 34. Notch 2; 4. Heating module; 5. Temperature feedback module; 6. Test piece; 7. Test pipeline; 8. Measurement point 1; 9. Measurement point 2; 200. Cooling medium supply equipment; 300. Cooling medium recovery equipment; 400. Smoke treatment equipment; 500. Heat loading control equipment; 600. Test data processing equipment. Detailed Implementation
[0025] like Figures 1-9 As shown, this utility model provides a high-temperature heat exchange and flow resistance characteristic testing device 100, including a housing 1 and an installation module 3. A door 2 is provided on one side of the housing 1. The installation module 3 is detachably installed inside the housing 1. The installation module 3 can be installed or removed by opening the door 2. When the installation module 3 is installed inside the housing 1, it divides the interior of the housing 1 into a first cavity 14 and a second cavity 15. A heating module 4 is installed inside the first cavity 14. The side of the installation module 3 facing the first cavity 14 is used to install a test piece 6. A notch 16 is provided in the area of the housing 1 corresponding to the second cavity 15. A notch 24 is provided on the side of the installation module 3 facing the second cavity 15. The notches 16 and 24 are used for the test pipe 7 connected to the test piece 6 to extend out, and the partial area of the test piece 6 exposed by the notch 24 can also be used to arrange a measurement module. Based on the setting of heating module 4, cavity 14 forms a high-temperature chamber for the test. Cavity 2 15 is not equipped with heating module 4 and is separated from cavity 14 by mounting module 3. During the test, its temperature will be significantly lower than that of cavity 14.
[0026] This invention provides a high-temperature testing environment for the test specimen 6 that more closely resembles actual working conditions. This allows the test specimen 6 to undergo heat exchange and flow resistance characteristic testing under high-temperature conditions by introducing a cooling medium, avoiding errors caused by engineering estimations in room-temperature tests and improving the accuracy of heat exchange and flow resistance characteristic test results. The detachable design of the mounting module 3 facilitates the quick installation of the test specimen 6 inside the chamber 1, improving testing efficiency. Notches 16 and 34 allow the test pipe 7 to extend from inside the chamber 1 and connect to the cooling medium supply device 200. Simultaneously, the partitioning of the mounting module 3 creates cavity 2 15, which serves as space for the test pipe 7 and some cables, reducing the volume of the high-temperature chamber required for testing, thus improving the heating rate and reducing heat waste.
[0027] The side of the housing 1 opposite to the cavity 2 15 and the mounting module 3 is open, and the notch 16 is located at the edge of the open side of the housing 1. Based on this design, it is convenient to combine two or more high-temperature heat exchange and flow resistance characteristic testing devices 100. The combination of two high-temperature heat exchange and flow resistance characteristic testing devices 100 is as follows: Figure 6 As shown, the four high-temperature heat exchange and flow resistance characteristic test devices 100 are arranged with their open sides facing each other, and can be used in combination as follows: Figure 7 and Figure 8 As shown.
[0028] There are four notches 16, which correspond to the three sides of the open side of the housing 1 and one side of the door 2. Based on this configuration, it can support the outgoing of multiple directions, multiple pipelines and cables. When multiple high-temperature heat exchange and flow resistance characteristic test devices 100 are used in combination, the test pipelines 7 of the test pieces 6 inside the multiple high-temperature heat exchange and flow resistance characteristic test devices 100 can be connected in series or in parallel, so as to share the same cooling medium supply device 200, or the corresponding cooling medium supply device 200 can be used independently, depending on the actual needs.
[0029] The chamber door 2 is provided with an observation window 21 in the area corresponding to the cavity 14, so that the operator can easily observe the internal condition of the chamber 1 during the test, thereby adjusting the test parameters in a timely manner and improving the controllability of the test.
[0030] The enclosure 1 comprises, from the outside in, an outer shell layer 11, a metal frame 12, and a heat-insulating inner layer 13. The heating module 4 is disposed on the heat-insulating inner layer 13 and faces the mounting module 3. The cables of the heating module 4 are arranged within the hollow area of the metal frame 12. This design ensures the structural strength of the enclosure 1 while effectively reducing heat transfer outwards, improving heating efficiency, and minimizing heat waste. Arranging the cables of the heating module 4 within the hollow area of the metal frame 12 minimizes the impact of high temperatures on the cables and improves the overall integration of the high-temperature heat exchange and flow resistance characteristic testing device 100. The cables arranged within the hollow area of the metal frame 12 are led out from the outer shell layer 11.
[0031] A temperature feedback module 5 is also provided inside the cavity 14. The temperature feedback module 5 is located on the side of the mounting module 3 used to mount the test piece 6 and / or on the heat insulation inner layer 13. The temperature feedback module 5 is electrically connected to the heat loading control device 500. Specifically, the temperature feedback module 5 is a temperature sensor or other temperature detection unit, used to monitor the ambient temperature inside the cavity 14 in real time and feed it back to the heat loading control device 500 so that the operator can control the temperature inside the cavity 14. The heating module 4 is preferably a quartz heating tube and can realize half-power heating and full-power heating.
[0032] The installation module 3 is inserted inside the housing 1, and its installation and removal can be completed without complicated tools, significantly shortening the test preparation time and making it better suited for situations where test pieces 6 are frequently changed. See details. Figures 1-3 As shown, when the installation module 3 is vertically inserted into the box 1, the top and bottom of the installation module 3 in its vertical position are in contact with or have a gap fit with the inner top and inner bottom surfaces of the box 1, so that the installation module 3 can be vertically inserted into the box 1.
[0033] The mounting module 3 is equipped with a heat insulation component 31 to reduce the transfer of heat from cavity 14 to cavity 25. Based on this configuration, heat loss within cavity 14 can be reduced, and a significant increase in temperature within cavity 215 can be avoided.
[0034] In one embodiment of this utility model, the mounting module 3 is a single piece. In another embodiment of this utility model, the mounting module 3 includes an adapter 32 and a mounting plate 33. When installing the test piece 6, bolts are used to pass through the mounting holes and the heat insulation component 31 on the test piece 6 and connect to the adapter 32, thereby fixing the test piece 6 to the heat insulation component 31 and the adapter 32, with the heat insulation component 31 located between the test piece 6 and the adapter 32. Bolts are then used to pass through the heat insulation component 31 and the adapter 32 and fix them to the mounting plate 33, thus completing the assembly of the test piece 6 and the mounting module 3. The notch 34 penetrates the heat insulation component 31, the adapter 32, and the mounting plate 33. Based on this embodiment, the heat insulation component 31 can reduce the transfer of heat to the adapter 32 and the mounting plate 33, and by replacing the adapter 32 and the heat insulation component 31 of a corresponding shape, it can be adapted to test pieces 6 of different shapes and sizes.
[0035] This invention also includes a measurement module, which is used to be installed on the test specimen 6 and / or the test pipeline 7 to measure test data. Specifically, the inlet and outlet of the test specimen 6 are respectively connected to a test pipeline 7, and measurement modules are arranged on the two test pipelines 7 to form a measurement point 8 (e.g., Figure 4 As shown), the measurement modules arranged on the two test pipelines 7 include, but are not limited to, temperature detection units, flow rate and volume detection units, and pressure detection units. Measurement modules are arranged on the outer sides of the test piece 6 to form measurement points 9 (e.g., Figure 5 As shown), the measuring modules arranged on the outside of both sides of test piece 6 are temperature detection units, and are arranged in... Figure 5 The measuring module on one side of the test piece 6 is shown, with its cable routing extending along the side of the mounting module 3 into the cavity 15. All the aforementioned measuring modules are electrically connected to the test data processing equipment 600, and the measured data is fed back to the test data processing equipment 600 for the operator to access.
[0036] When applying this utility model, refer to Figure 9 As shown, the test pipe 7 connected to the inlet of test piece 6 is connected to the cooling medium supply device 200, and the test pipe 7 connected to the outlet of test piece 6 is connected to the cooling medium recovery device 300. A fume treatment device 400 is installed above the high-temperature heat exchange and flow resistance characteristic test device 100 to collect and purify the fume generated during the heating process. The temperature feedback module 5 is electrically connected to the heat loading control device 500, and the operator controls the temperature inside the cavity 14 through the loading control device. All measurement modules are electrically connected to the test data processing device 600, and the operator obtains the corresponding test data through the test data processing device 600.
[0037] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.
[0038] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.
Claims
1. A high-temperature heat transfer and flow resistance characteristic testing device, characterized in that, The enclosure includes a housing (1) and an installation module (3). One side of the housing (1) is provided with a door (2). The installation module (3) is detachably installed inside the housing (1) and divides the inside of the housing (1) into a cavity one (14) and a cavity two (15). A heating module (4) is provided inside the cavity one (14). The side of the installation module (3) facing the cavity one (14) is used to install the test piece (6). The area of the housing (1) corresponding to the cavity two (15) is provided with a notch one (16). The side of the installation module (3) facing the cavity two (15) is provided with a notch two (34). The notch one (16) and the notch two (34) are used for the test pipe (7) connected to the test piece (6) to extend out.
2. The high-temperature heat transfer and flow resistance characteristic testing device as described in claim 1, characterized in that, The side of the box (1) opposite to the cavity two (15) and the mounting module (3) is open, and the notch one (16) is located at the edge of the open side of the box (1).
3. The high-temperature heat transfer and flow resistance characteristic testing device as described in claim 2, characterized in that, There are four notches (16), and the four notches (16) are located on the three sides of the open side of the box body (1) and one side of the box door (2).
4. The high-temperature heat transfer and flow resistance characteristic testing apparatus as described in any one of claims 1-3, characterized in that, The door (2) is provided with an observation window (21) in the area corresponding to the cavity (14).
5. The high-temperature heat transfer and flow resistance characteristic testing apparatus as described in any one of claims 1-3, characterized in that, The housing (1) includes an outer shell (11), a metal frame (12) and a heat-insulating inner layer (13) arranged sequentially from the outside to the inside. The heating module (4) is arranged on the heat-insulating inner layer (13) and facing the mounting module (3). The cable of the heating module (4) is arranged in the hollow area of the metal frame (12).
6. The high-temperature heat transfer and flow resistance characteristic testing device as described in claim 5, characterized in that, A temperature feedback module (5) is also provided inside the cavity (14). The temperature feedback module (5) is located on the side of the mounting module (3) used to mount the test piece (6) and / or on the heat insulation inner layer (13).
7. The high-temperature heat transfer and flow resistance characteristic testing device as described in claim 1, characterized in that, The installation module (3) is inserted inside the housing (1).
8. The high-temperature heat transfer and flow resistance characteristic testing apparatus as described in any one of claims 1-3, 6, and 7, characterized in that, The installation module (3) is provided with a heat insulation component (31) to reduce the transfer of heat from cavity one (14) to cavity two (15).
9. The high-temperature heat transfer and flow resistance characteristic testing device as described in claim 8, characterized in that, The installation module (3) includes a transition tool (32) and an installation plate (33). When installing the test piece (6), the test piece (6) is fixed with the heat insulation component (31) and the transition tool (32), and the heat insulation component (31) is located between the test piece (6) and the transition tool (32). The transition tool (32) is fixed with the installation plate (33), and the second notch (34) passes through the heat insulation component (31), the transition tool (32) and the installation plate (33).
10. The high-temperature heat transfer and flow resistance characteristic testing apparatus as described in any one of claims 1-3, 6, 7, and 9, characterized in that, It also includes a measurement module for mounting on the test piece (6) and / or test pipeline (7).