High-temperature and high-pressure cooling effect test device

Abstract

The invention discloses a high-temperature and high-pressure cooling effect testing device which comprises a device body, a glass window, a cooling assembly and a temperature measuring assembly. A mounting opening is formed in the side wall of the device body; the glass window is detachably mounted on the mounting opening, the glass window comprises a mounting shell, outer side glass and inner side glass, the outer side glass and the inner side glass are arranged on the mounting shell at intervals in the direction facing the main air flow channel, and a first cooling cavity is defined by a gap between the outer side glass and the inner side glass through the mounting shell; a first air inlet assembly and an air exhaust assembly which are connected with the first cooling cavity are arranged on the two opposite sides of the mounting shell correspondingly, and an air pressure adjusting assembly is arranged on the first air inlet assembly and / or the air exhaust assembly; the cooling assembly is arranged on the device body and is used for positioning and fixing a to-be-tested blade in a main air flow channel of the device body; the temperature measuring assembly is used for measuring the temperature of the to-be-measured blade in the main air flow channel through the glass window. The high-temperature and high-pressure cooling effect test device provided by the invention can improve the high-temperature and high-pressure resistance of the glass window.

Description

Technical Field

[0001] The present invention relates to the technical field of cooling effect testing of aircraft engine blades, in particular to a high-temperature and high-pressure cooling effect testing device. Background Art

[0002] Currently, to accurately test the performance parameters of high-temperature resistant materials and cooling structures in aircraft engine turbine blades, a specific casing is typically required to house the blades under test. High-temperature gas is then introduced into the casing to simulate actual operating conditions with hot blades. A radiation pyrometer then collects the radiation intensity from the blade surface through a glass window in the casing to calculate the blade surface temperature. However, the high-temperature, high-pressure gas flowing within the casing places stringent requirements on the mechanical and optical properties of the glass window. Conventional glass structures are prone to cracking, leading to internal gas leakage, resulting in test failure and potentially endangering personnel and equipment safety.

[0003] For example, Chinese invention patent CN118858359A provides a medium-temperature and medium-pressure cooling efficiency test device, whose visual window adopts a single-layer glass structure. The optical glass can only be thickened and strengthened through conventional processes, resulting in the visual window being unable to adapt to the high-temperature and high-pressure working environment of the aircraft engine, posing a safety hazard. Therefore, the blades to be tested can only be tested in a medium-temperature and medium-pressure environment. The test conditions are different from the actual working conditions of the aircraft engine, affecting the authenticity of the measurement results. Summary of the Invention

[0004] The present invention provides a high-temperature and high-pressure cooling effect test device to solve the technical problem that the visual window of the existing cooling effect test device cannot adapt to the high-temperature and high-pressure working environment of aircraft engine blades.

[0005] According to one aspect of the present invention, there is provided a high-temperature and high-pressure cooling effect test device, comprising a device body, a glass window, a cooling component and a temperature measuring component;

[0006] The air inlet end of the device body is used to connect to the air intake combustion chamber, so that the high-temperature and high-pressure gas in the air intake combustion chamber enters the inner channel of the device body, thereby forming a main air flow channel with high-temperature and high-pressure conditions in the inner channel. The exhaust end of the device body is used to connect to the gas exhaust pipe. The side wall of the device body is provided with a mounting port;

[0007] The glass window is detachably mounted on the mounting opening and seals the mounting opening, the glass window comprising a mounting shell, an outer glass and an inner glass spaced apart on the mounting shell in a direction toward the main air flow channel, a gap between the outer glass and the inner glass being enclosed by the mounting shell to form a first cooling cavity, a first air intake assembly and an exhaust assembly being respectively provided on opposite sides of the mounting shell, the first air intake assembly being used to introduce cooling gas into the first cooling cavity, and the exhaust assembly being used to exhaust the cooling gas in the first cooling cavity, an air pressure regulating assembly being provided on the first air intake assembly and / or the exhaust assembly for regulating the air pressure in the first cooling cavity to match the air pressure in the main air flow channel;

[0008] The cooling assembly is provided on the side wall of the device body and extends into the main airflow channel, and is used to position and fix the blade to be measured in the main airflow channel and to pass cooling gas into the cooling holes preset on the blade to be measured;

[0009] The temperature measuring component is arranged on the outside of the glass window and is used to measure the temperature of the blade to be measured in the main air flow channel through the glass window.

[0010] Preferably, the high-temperature and high-pressure cooling efficiency test device also includes a second air inlet assembly, the device body is provided with a purge air inlet hole on one side of the mounting port, and a second cooling chamber connected with the purge air inlet hole is provided on the inner wall of the mounting port, the second cooling chamber is provided on the side of the glass window facing the air inlet end of the device body, the inner side of the mounting port is provided with a limiting flange, the limiting flange is used to abut one end of the mounting shell facing the main air flow channel, and a guide groove for communicating with the second cooling chamber is provided at a corresponding position on the limiting flange and / or the mounting shell, the second air inlet assembly is connected to the purge air inlet hole and is used to pass cooling gas into the second cooling chamber through the purge air inlet hole, so that the air pressure in the second cooling chamber is maintained within a preset range and the cooling gas in the second cooling chamber purges the side of the inner glass facing the main air flow channel along the guide groove.

[0011] Preferably, the second cooling cavity is extended along the width direction of the inner glass and the vertical projection of the inner glass on the second cooling cavity is located in the second cooling cavity, the middle position of the inner glass in the width direction is set as the first purge zone, and the two end positions of the inner glass in the width direction are set as the second purge zone; the guide groove includes a plurality of first guide grooves arranged in the first purge zone at intervals along the width direction of the inner glass, and a second guide groove provided in the second purge zone, the outlet direction of the first guide groove is set along the length direction of the inner glass, the outlet direction of the second guide groove is inclined along the side edge direction of the inner glass, and the outlet width of the second guide groove is greater than the outlet width of the first guide groove.

[0012] Preferably, the outlet width of the guide groove is 1.5-2 times the inlet width thereof.

[0013] Preferably, the device body is provided with a cooling air inlet hole and an exhaust hole on opposite sides of the mounting port, respectively. The cooling air inlet hole and the exhaust hole are arranged on the diagonal lines of the glass window to avoid the purge air inlet hole. The cooling air inlet hole and the exhaust hole are both used to communicate with the first cooling cavity, the first air inlet assembly is connected to the cooling air inlet hole, and the exhaust assembly is connected to the exhaust hole.

[0014] Preferably, the cooling air inlet hole is provided on a side of the glass window facing the air inlet end of the device body.

[0015] Preferably, the device body is provided with a mounting boss surrounding the mounting port, and the mounting shell is provided with a mounting edge at one end away from the main air flow channel. A plurality of mounting holes are provided on the mounting boss and the mounting edge, and the glass window is used to be installed and fixed relative to the device body by passing bolts through the mounting holes on the mounting edge and the mounting boss in sequence.

[0016] Preferably, graphite gaskets are provided between the mounting boss and the mounting edge, between the mounting housing and the outer glass, and between the mounting housing and the inner glass.

[0017] Preferably, an interlayer space is provided in the side wall of the device body, and a liquid inlet component and a liquid discharge component connected to the interlayer space are respectively provided at the opposite ends of the device body, the liquid inlet component is used to introduce cooling liquid into the interlayer space, and the liquid discharge component is used to discharge the cooling liquid in the interlayer space.

[0018] Preferably, the air inlet end of the device body is provided with a first tapered pipe that gradually contracts along the air inlet direction, and the air outlet end of the device body is provided with a second tapered pipe that gradually expands along the air outlet direction.

[0019] The present invention has the following beneficial effects:

[0020] In the high-temperature and high-pressure cooling efficiency test device provided by the present invention, the device body is connected to the intake combustion chamber and the high-temperature and high-pressure gas of the intake combustion chamber is introduced to form a main air flow channel with high-temperature and high-pressure conditions in the internal channel of the device body. The blade to be tested is positioned and fixed by the cooling component and cooling gas is introduced into the cooling holes preset on the blade to be tested, thereby accurately simulating the high-temperature and high-pressure working environment and cold air cooling operation of the blade to be tested. The temperature of the blade to be tested in the main air flow channel can be measured along the glass window through the temperature measuring component to verify the cooling effect of the cooling structure of the blade to be tested. Since the glass window is formed by the gap between the outer glass and the inner glass and the mounting shell, cooling gas is introduced into the first cooling cavity through the first air inlet component, and the cooling gas in the first cooling cavity is discharged through the exhaust component to realize the flow cooling of the cooling gas, and the air pressure in the first cooling cavity is adjusted to a state matching the air pressure of the main air flow channel through the air pressure regulating component. This structure can balance the air pressure in the first cooling cavity with the air pressure of the main air flow channel while using the cooling gas to cool the inner glass, thereby reducing the internal and external pressure difference on the two opposite sides of the inner glass, greatly reducing the force on the inner glass, and thus, the inner The glass only needs to withstand the high-temperature impact of the main airflow channel and is almost not subjected to any force, while the outer glass only needs to withstand the pressure generated by the pressure difference between the air pressure of the first cooling chamber and the ambient atmosphere, and does not need to withstand the high-temperature impact. Therefore, passing cooling gas between the double-layer glass can not only cool the inner glass for heat exchange, but also effectively insulate the outer glass, separating the high-temperature impact and high-pressure impact of the main airflow channel and absorbing them through different glasses, effectively reducing the risk of glass breakage and improving the high-temperature and high-pressure resistance of the glass window, so that it can adapt to the high-temperature and high-pressure working environment of aircraft engine blades, ensuring that the test conditions are consistent with the actual working conditions of the aircraft engine, and ensuring the authenticity of the measurement results.

[0021] Secondly, by passing cooling gas into the first cooling chamber to cool the inner glass and balance the forces acting on it, compared to cooling with cooling liquid, this method also avoids interference from the refraction of the cooling liquid and liquid impurities on the radiation temperature measurement process, thus ensuring the accuracy of the radiation temperature measurement results. Furthermore, because the glass windows are independently arranged, the outer and inner glass can be installed separately through the mounting housing, making the entire unit easy to disassemble for cleaning or replacement, making it more convenient to use.

[0022] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 A schematic structural diagram of a high-temperature and high-pressure cooling efficiency test device provided in an embodiment of the present invention;

[0025] Figure 2 for Figure 1 The schematic diagram of the structure of the high-temperature and high-pressure cooling effect test device after the first and second tapered pipes are removed;

[0026] Figure 3 for Figure 2 The exploded view of the high-temperature and high-pressure cooling effect test device shown shows the glass window removed;

[0027] Figure 4 for Figure 2 A cross-sectional view of the high-temperature and high-pressure cooling efficiency test device shown is taken along the plane where the axis of the purge air inlet hole is located, wherein the arrow indicates the flow direction of the cooling gas from the second air inlet assembly into the second cooling cavity;

[0028] Figure 5 for Figure 2 A perspective view of the device body in the high-temperature and high-pressure cooling effect test device shown;

[0029] Figure 6 for Figure 2 A three-dimensional view of the glass window in the high-temperature and high-pressure cooling effect test device is shown.

[0030] Legend:

[0031] 1000. High-temperature and high-pressure cooling efficiency test device; 1. Device body; 11. Main air flow channel; 12. Mounting port; 13. Purge air inlet; 14. Second cooling chamber; 15. Limiting flange; 16. Cooling air inlet; 17. Exhaust hole; 18. Mounting boss; 19. Interlayer space; 101. First conical pipe; 102. Second conical pipe; 2. Glass window; 21. Mounting shell; 211. Guide groove; 2111. First guide groove; 2112. Second guide groove; 212. Vent hole; 213. Mounting edge; 214. Bolt; 22. Outer glass; 23. Inner glass; 24. First cooling chamber; 3. Cooling assembly; 4. First air inlet assembly; 5. Exhaust assembly; 6. Second air inlet assembly; 7. Liquid inlet assembly; 8. Liquid discharge assembly; 2000. Blade to be tested. DETAILED DESCRIPTION

[0032] The following detailed description of embodiments of the present invention is provided in conjunction with the accompanying drawings. However, the present invention may be implemented in a variety of different ways as defined and covered below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are illustrative and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0033] Those skilled in the art will understand that, unless expressly stated otherwise, the term "comprising" used in the description of the present invention refers to the presence of the features, integers, steps, operations, parts and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, parts, components and / or combinations thereof. It should be understood that when we refer to a component as being "connected" to another component, it can be directly connected to the other component or connected through an intermediate component. The term "and / or" used here includes all or any unit and all combinations of one or more associated listed items. The terms "first" and "second" and the like in the description and claims of the present invention are used to distinguish different objects, rather than to describe a specific order.

[0034] Figures 1 to 6 Together, they show a high-temperature and high-pressure cooling efficiency test device provided by an embodiment of the present invention, which is used to simulate the flow path structure of an aircraft engine and provide a high-temperature and high-pressure working environment, so as to accurately detect the parameter performance of the high-temperature resistant materials and cooling structure of the aircraft engine blades, and can ensure that the test conditions are consistent with the actual working conditions of the aircraft engine, thereby ensuring the authenticity of the measurement results.

[0035] Please combine Figure 2 、 Figure 3 and Figure 4 The high-temperature and high-pressure cooling efficiency test device 1000 includes a device body 1, a glass window 2, a cooling component 3 and a temperature measuring component (not shown in the figure, the same below). The air inlet end of the device body 1 is used to connect with the air intake combustion chamber, so that the high-temperature and high-pressure gas in the air intake combustion chamber enters the inner channel of the device body 1 and forms a main air flow channel 11 with high-temperature and high-pressure conditions in the inner channel. The exhaust end of the device body 1 is used to connect with the gas exhaust pipe, and an installation port 12 is opened on the side wall of the device body 1.

[0036] Furthermore, the glass window 2 is detachably mounted on the mounting opening 12 and seals the mounting opening 12. The glass window 2 includes a mounting shell 21, an outer glass 22 and an inner glass 23 arranged at intervals on the mounting shell 21 in the direction toward the main air flow channel 11. The gap between the outer glass 22 and the inner glass 23 is enclosed by the mounting shell 21 to form a first cooling cavity 24. A first air intake component 4 and an exhaust component 5 are respectively provided on opposite sides of the mounting shell 21. The first air intake component 4 is used to introduce cooling gas into the first cooling cavity 24, and the exhaust component 5 is used to discharge the cooling gas in the first cooling cavity 24. The first air intake component 4 and / or the exhaust component 5 are provided with an air pressure regulating component for regulating the air pressure in the first cooling cavity 24 to match the air pressure of the main air flow channel 11.

[0037] Furthermore; the cooling component 3 is arranged on the side wall of the device body 1 and extends into the main airflow channel 11, and the cooling component 3 is used to position and fix the blade 2000 to be measured in the main airflow channel 11 and pass cooling gas into the preset cooling holes on the blade 2000 to be measured; the temperature measuring component is arranged on the outside of the glass window 2 and is used to measure the temperature of the blade 2000 to be measured in the main airflow channel 11 through the glass window 2.

[0038] In the high-temperature and high-pressure cooling efficiency test device 1000, the device body 1 is connected to the intake combustion chamber and the high-temperature and high-pressure gas of the intake combustion chamber is introduced to form a main airflow channel 11 with high-temperature and high-pressure conditions in the inner channel of the device body 1. The blade to be tested 2000 is positioned and fixed through the cooling component 3 and cooling gas is introduced into the preset cooling holes on the blade to be tested 2000, thereby accurately simulating the high-temperature and high-pressure working environment and cold air cooling operation of the blade to be tested 2000. The temperature of the blade to be tested 2000 in the main airflow channel 11 can be measured along the glass window 2 through the temperature measuring component to verify the cooling effect of the cooling structure of the blade to be tested 2000. Since the glass window 2 cooperates with the mounting shell 21 to form a first cooling chamber 24 through the gap between the outer glass 22 and the inner glass 23, cooling gas is introduced into the first cooling chamber 24 through the first air inlet component 4, and the cooling gas in the first cooling chamber 24 is discharged through the exhaust component 5 to achieve flow cooling of the cooling gas, and the air pressure in the first cooling chamber 24 is adjusted to a state matching the air pressure of the main air flow channel 11 through the air pressure regulating component. This structure can balance the air pressure in the first cooling chamber 24 with the air pressure of the main air flow channel 11 while using the cooling gas to cool the inner glass 23, thereby reducing the internal and external pressure difference between the two opposite sides of the inner glass 23, greatly reducing the The stress on the inner glass 23, therefore, the inner glass 23 only needs to withstand the high temperature impact of the main air flow channel 11, and is almost not subjected to stress, while the outer glass 22 only needs to withstand the pressure generated by the pressure difference between the air pressure of the first cooling chamber 24 and the ambient atmosphere, and does not need to withstand the high temperature impact. Therefore, passing cooling gas between the double-layer glass can not only cool the inner glass 23 for heat exchange, but also effectively insulate the outer glass 22, separate the high temperature impact and high pressure impact of the main air flow channel 11 and withstand them through different glasses, effectively reducing the risk of glass breakage, and improving the high temperature and high pressure resistance of the glass window 2, so that it can adapt to the high temperature and high pressure working environment of aircraft engine blades, ensure that the test conditions are consistent with the actual working conditions of the aircraft engine, and ensure the authenticity of the measurement results.

[0039] Secondly, by passing cooling gas into the first cooling chamber 24 to cool the inner glass 23 and balance the forces acting on it, compared to cooling by passing cooling liquid into the first cooling chamber 24, this method also avoids interference from the refraction of the cooling liquid and liquid impurities on the radiation temperature measurement process, thereby ensuring the accuracy of the radiation temperature measurement results. Furthermore, because the glass window 2 is independently provided, the outer glass 22 and the inner glass 23 are separately mounted via the mounting housing 21, making it easy to disassemble and assemble the entire unit for cleaning or replacement, thus facilitating ease of use.

[0040] Furthermore, the air pressure regulating assembly includes an air pressure detection valve and an air pressure regulating valve. The air pressure detection valve is connected to the first cooling chamber 24 and is used to detect changes in the air pressure in the first cooling chamber 24. The air pressure regulating valve is used to adjust the air pressure in the first cooling chamber 24 based on the detection result of the air pressure detection valve, so that the air pressure in the first cooling chamber 24 matches the air pressure in the main air flow channel 11. It should be understood that matching the air pressure in the first cooling chamber 24 with the air pressure in the main air flow channel 11 means that the air pressure in the first cooling chamber 24 is equal to the air pressure in the main air flow channel 11, or that the air pressure difference between the air pressure in the first cooling chamber 24 and the air pressure in the main air flow channel 11 is controlled within a preset range, so that the air pressure forces on the two opposing surfaces of the inner glass 23 are substantially the same, thereby offsetting each other and significantly reducing the high-pressure impact strength to which the inner glass 23 is subjected.

[0041] Furthermore, the temperature measuring component includes a radiation temperature measuring element, which is used to perform non-contact temperature measurement based on the principle of infrared radiation. It neither changes the surface structure and characteristics of the measured component nor interferes with the surrounding flow field. It has the advantages of high resolution, high sensitivity, strong reliability, short response time, wide temperature measurement range, and adjustable measurement distance. It is particularly suitable for detecting high temperatures.

[0042] Furthermore, the device body 1 is provided with a plurality of mounting openings 12 around the blade to be measured 2000, and the glass windows 2 are provided with a plurality of corresponding ones, and the plurality of glass windows 2 are installed one by one on the plurality of mounting openings 12, so that the temperature measuring component can measure the temperature of different positions of the blade to be measured 2000 from different directions and angles.

[0043] Please combine Figure 4 、 Figure 5 and Figure 6The high-temperature and high-pressure cooling efficiency test device 1000 further includes a second air inlet assembly 6. The device body 1 is provided with a purge air inlet hole 13 on one side of the mounting port 12, and a second cooling cavity 14 communicating with the purge air inlet hole 13 is provided on the inner wall of the mounting port 12. The second cooling cavity 14 is provided on the side of the glass window 2 facing the air inlet end of the device body 1. A limiting flange 15 is provided on the inner side of the mounting port 12. The limiting flange 15 is used to abut against one end of the mounting shell 21 facing the main air flow channel 11 to position the mounting shell 21 relative to the mounting shell 21. The installation depth of the installation opening 12 is limited, and a guide groove 211 for communicating with the second cooling chamber 14 is opened at a corresponding position on the limiting flange 15 and / or the installation shell 21. The second air intake assembly 6 is connected to the purge air inlet hole 13 and is used to pass cooling gas into the second cooling chamber 14 through the purge air inlet hole 13, so that the air pressure in the second cooling chamber 14 is maintained within a preset range and the cooling gas in the second cooling chamber 14 is blown along the guide groove 211 toward the side of the inner glass 23 facing the main air flow channel 11.

[0044] like Figure 5 As shown, the second air intake assembly 6 introduces cooling gas into the second cooling chamber 14 through the purge air intake hole 13, thereby maintaining the air pressure in the second cooling chamber 14 within a preset range and maintaining a high pressure in the second cooling chamber 14. Furthermore, since the second cooling chamber 14 is located on the side of the glass window 2 facing the air intake end of the device body 1, the airflow direction of the guide groove 211 is arranged in the same direction as the airflow direction of the main air channel 11, effectively preventing the high-temperature gas in the main air channel 11 from flowing back into the second cooling chamber 14 along the guide groove 211. Secondly, after the cooling gas is stabilized by the second cooling chamber 14, it is evenly purged through the guide groove 211 to the side of the inner glass 23 facing the main air channel 11, thereby cooling and cleaning the inner glass 23. This prevents contaminants such as oil mist and carbon particles generated by incomplete combustion during the ignition and initial heating stages of the fuel in the intake combustion chamber from adhering to the inner glass 23, thereby ensuring the visual quality of the glass window 2.

[0045] Please combine Figure 6The second cooling chamber 14 extends along the width direction of the inner glass 23 so that the vertical projection of the inner glass 23 on the second cooling chamber 14 is located in the second cooling chamber 14. The middle position of the inner glass 23 along the width direction is set as a first purge zone, and the two end positions of the inner glass 23 along the width direction are set as second purge zones. The guide groove 211 includes a plurality of first guide grooves 2111 arranged in the first purge zone at intervals along the width direction of the inner glass 23, and a second guide groove 2112 provided in the second purge zone. The outlet direction of the first guide groove 2111 is set along the length direction of the inner glass 23, and the outlet direction of the second guide groove 2112 is set obliquely toward the side edge of the inner glass 23. The outlet width of the second guide groove 2112 is greater than the outlet width of the first guide groove 2111.

[0046] Specifically, the second cooling chamber 14 completely covers one end of the inner glass 23, and evenly blows toward the surface of the inner glass 23 through the first guide groove 2111 with a smaller diameter, and strengthens the blowing toward the side edge of the inner glass 23 through the second guide groove 2112 with a larger diameter. While ensuring the blowing effect, it can prevent the edge of the inner glass 23 from being locally heated and cracked, further improving the durability of the inner glass 23.

[0047] Preferably, the outlet width of the guide groove 211 is 1.5-2 times the inlet width thereof, that is, the outlet width of the first guide groove 2111 is 1.5-2 times the inlet width thereof, and the outlet width of the second guide groove 2112 is 1.5-2 times the inlet width thereof. Setting the guide groove 211 to a conical structure with a narrow inlet and a wide outlet can not only guide the airflow to be evenly distributed on the surface of the inner glass 23, ensuring that the airflow effectively sweeps the entire surface area of ​​the inner support glass 23 and improves the sweeping effect, but also can play a role in preventing the airflow from reversing, further preventing the high-temperature gas in the main airflow channel 11 from reversely inhaling into the second cooling chamber 14, and since the diameter of the end of the guide groove 211 connected to the second cooling chamber 14 is small, the pressure maintaining effect of the second cooling chamber 14 can also be achieved.

[0048] like Figure 5 As shown, the device body 1 is provided with a cooling air inlet hole 16 and an exhaust hole 17 on opposite sides of the mounting port 12, respectively. The cooling air inlet hole 16 and the exhaust hole 17 are arranged on the diagonal line of the glass window 2 to avoid the purge air inlet hole 13. The cooling air inlet hole 16 and the exhaust hole 17 are both used to communicate with the first cooling cavity 24, the first air inlet component 4 is connected to the cooling air inlet hole 16, and the exhaust component 5 is connected to the exhaust hole 17.

[0049] Specifically, air vents 212 communicating with the first cooling cavity 24 are provided on opposite sides of the mounting shell 21, a first end of the cooling air inlet hole 16 is connected to the first air inlet component 4, a second end of the cooling air inlet hole 16 is connected to one of the air vents 212, a first end of the exhaust hole 17 is connected to the exhaust component 5, and a second end of the exhaust hole 17 is connected to another air vent 212, so that the first air inlet component 4 and the exhaust component 5 are respectively connected to opposite sides of the first cooling cavity 24. Since the cooling air inlet hole 16 and the exhaust hole 17 are respectively arranged on the diagonal line of the glass window 2, not only can the cooling gas fully circulate throughout the entire area of ​​the first cooling cavity 24 to improve the cooling effect, but also the purge air inlet hole 13 can be avoided, so that the purge air inlet hole 13 can be arranged side by side with respect to the cooling air inlet hole 16 or side by side with respect to the exhaust hole 17, and the purge air inlet hole 13 can be opened on the central axis of the glass window 2 to improve the purge air intake effect.

[0050] Preferably, the cooling air inlet hole 13 is arranged on the side of the air inlet end of the glass window 2 facing the device body 1, that is, the cooling air inlet hole 13 is arranged side by side with respect to the cooling air inlet hole 16, so that the cooling gas in the first cooling cavity 24 flows along the air flow direction of the main air flow channel 11, so that the force on the two opposite sides of the inner glass 23 is more uniform, and the cooling effect of the end of the inner glass 23 close to the high-temperature air flow inlet is better.

[0051] Please combine Figure 5 and Figure 6 The device body 1 is provided with a mounting boss 18 surrounding the mounting opening 12. The mounting housing 21 is provided with a mounting edge 213 at one end away from the main airflow channel 11. Both the mounting boss 18 and the mounting edge 213 are provided with a plurality of mounting holes. The glass window 2 is installed and secured relative to the device body 1 by bolts 214 sequentially passing through the mounting holes provided in the mounting edge 213 and the mounting boss 18. The glass window 2 is positioned by the cooperation of the mounting boss 18 and the mounting edge 213, and then secured by the plurality of bolts 214. This results in a simple and efficient assembly structure, high connection strength, and excellent sealing effect.

[0052] Preferably, graphite gaskets (not shown, same below) are provided between the mounting boss 18 and the mounting edge 213, between the mounting housing 21 and the outer glass 22, and between the mounting housing 21 and the inner glass 23. These graphite gaskets seal and cushion the gaps connecting the components, preventing the escape of high-temperature or cooling gases. They also prevent direct contact between the metal structure and the outer glass 22 or inner glass 23, which could damage the glass in the event of impact.

[0053] Please combine Figure 2 and Figure 4 An interlayer space 19 is provided in the side wall of the device body 1, and a liquid inlet component 7 and a liquid discharge component 8 connected to the interlayer space 19 are respectively provided at the opposite ends of the device body 1. The liquid inlet component 7 is used to introduce cooling liquid into the interlayer space 19, and the liquid discharge component 8 is used to discharge the cooling liquid in the interlayer space 19, thereby realizing the flow cooling operation of the cooling liquid and cooling the side wall of the device body 1. Since the side wall of the device body 1 does not need to be provided with a transparent visible structure, the cooling by cooling liquid is better than the cooling by cooling gas.

[0054] Preferably, two of the liquid inlet components 7 and the liquid discharge components 8 are provided, and the two liquid inlet components 7 are arranged at an angle and the outlet directions are arranged along the same spiral direction, so that the cooling liquid entering the interlayer space 19 can flow spirally around the device body 1, thereby improving the cooling effect; the two liquid discharge components 8 are arranged at an angle and the inlet directions are arranged along the same spiral direction, so that the cooling liquid flowing spirally along the interlayer space 19 can be quickly discharged, avoiding blockage and slowing down the flow rate.

[0055] Furthermore, the first air intake assembly 4, the exhaust assembly 5, the second air intake assembly 6, the liquid inlet assembly 7, and the liquid discharge assembly 8 all include fluid conduits and on / off valves disposed on the fluid conduits. The on / off valves are used to control the on / off of the corresponding fluid conduits to meet the cooling and purging requirements of different test phases. For example, during the initial warming phase, the second air intake assembly 6 is opened to purge the inner glass 23 to prevent contaminants such as oil mist and carbon particles generated by incomplete combustion of fuel in the intake combustion chamber from adhering to the inner glass 23. During the test phase, the second air intake assembly 6 is closed to prevent cold air from entering the main flow channel 11 and affecting the test.

[0056] like Figure 1As shown, the air inlet end of the device body 1 is provided with a first tapered pipe 101 that gradually contracts along the air inlet direction, and the exhaust end of the device body 1 is provided with a second tapered pipe 102 that gradually expands along the exhaust direction. The first tapered pipe 101 is used to converge the high-temperature combustion gas and increase the flow rate to meet the test requirements, and the second tapered pipe 102 is used to improve the exhaust efficiency.

[0057] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A high temperature and high pressure cooling efficiency test device, characterized in that: It comprises a device body (1), a glass window (2), a cooling component (3) and a temperature measuring component; The air inlet end of the device body (1) is used to connect with the air inlet combustion chamber, so that the high-temperature and high-pressure gas in the air inlet combustion chamber enters the inner channel of the device body (1), thereby forming a main air flow channel (11) with high-temperature and high-pressure conditions in the inner channel; the exhaust end of the device body (1) is used to connect with the gas exhaust pipe, and a mounting port (12) is opened on the side wall of the device body (1); The glass window (2) is detachably mounted on the mounting opening (12) and blocks the mounting opening (12). The glass window (2) comprises a mounting shell (21), an outer glass (22) and an inner glass (23) arranged on the mounting shell (21) at intervals in a direction toward the main airflow channel (11). The gap between the outer glass (22) and the inner glass (23) is enclosed by the mounting shell (21) to form a first cooling cavity (24). A first air intake assembly (4) and an exhaust assembly (5) are respectively provided on opposite sides of the mounting shell (21). The first air intake assembly (4) is used to introduce cooling gas into the first cooling cavity (24), and the exhaust assembly (5) is used to discharge the cooling gas in the first cooling cavity (24). The first air intake assembly (4) and / or the exhaust assembly (5) are provided with an air pressure regulating assembly for regulating the air pressure in the first cooling cavity (24) to match the air pressure of the main airflow channel (11). The cooling assembly (3) is arranged on a side wall of the device body (1) and extends into the main airflow channel (11), and the cooling assembly (3) is used to position and fix the blade to be measured (2000) in the main airflow channel (11) and to pass cooling gas into a cooling hole preset on the blade to be measured (2000); The temperature measurement component is arranged on the outside of the glass window (2) and is used to measure the temperature of the blade (2000) to be measured in the main air flow channel (11) through the glass window (2).

2. The high temperature and high pressure cooling efficiency test device according to claim 1, characterized in that: The high-temperature and high-pressure cooling efficiency test device further comprises a second air inlet assembly (6), the device body (1) is provided with a purge air inlet hole (13) on one side of the installation port (12), and a second cooling cavity (14) in communication with the purge air inlet hole (13) is provided on the inner wall of the installation port (12), the second cooling cavity (14) being arranged on the side of the glass window (2) facing the air inlet end of the device body (1), the inner side of the installation port (12) is provided with a limiting flange (15), the limiting flange (15) being used to abut against the installation shell (21) facing the main air flow channel (11) At one end, a guide groove (211) for communicating with the second cooling cavity (14) is provided at a corresponding position on the limiting flange (15) and / or the mounting shell (21); the second air inlet assembly (6) is connected to the purge air inlet hole (13) and is used to introduce cooling gas into the second cooling cavity (14) through the purge air inlet hole (13), so that the air pressure in the second cooling cavity (14) is maintained within a preset range and the cooling gas in the second cooling cavity (14) is purged along the guide groove (211) toward one side of the inner glass (23) facing the main air flow channel (11).

3. The high temperature and high pressure cooling efficiency test device according to claim 2, characterized in that: The second cooling cavity (14) is extended along the width direction of the inner glass (23) so that the vertical projection of the inner glass (23) on the second cooling cavity (14) is located in the second cooling cavity (14); the middle position of the inner glass (23) along the width direction is set as a first purge zone, and the two end positions of the inner glass (23) along the width direction are set as second purge zones; the guide groove (211) comprises a plurality of first guide grooves (2111) arranged in the first purge zone at intervals along the width direction of the inner glass (23), and a second guide groove (2112) provided in the second purge zone, the outlet direction of the first guide groove (2111) is set along the length direction of the inner glass (23), the outlet direction of the second guide groove (2112) is set obliquely along the side edge direction of the inner glass (23), and the outlet width of the second guide groove (2112) is greater than the outlet width of the first guide groove (2111).

4. The high temperature and high pressure cooling efficiency test device according to claim 2 or 3, characterized in that: The outlet width of the guide groove (211) is 1.5-2 times the inlet width thereof.

5. The high temperature and high pressure cooling efficiency test device according to claim 2, characterized in that: The device body (1) is provided with a cooling air inlet hole (16) and an exhaust hole (17) on opposite sides of the mounting port (12), respectively. The cooling air inlet hole (16) and the exhaust hole (17) are arranged on the diagonal line of the glass window (2) to avoid the purge air inlet hole (13). The cooling air inlet hole (16) and the exhaust hole (17) are both used to communicate with the first cooling cavity (24). The first air inlet component (4) is connected to the cooling air inlet hole (16), and the exhaust component (5) is connected to the exhaust hole (17).

6. The high temperature and high pressure cooling efficiency test device according to claim 5, characterized in that: The cooling air inlet hole (16) is provided on a side of the glass window (2) facing the air inlet end of the device body (1).

7. The high temperature and high pressure cooling efficiency test device according to claim 1, characterized in that: The device body (1) is provided with a mounting boss (18) surrounding the mounting opening (12); the mounting shell (21) is provided with a mounting edge (213) at one end away from the main air flow channel (11); a plurality of mounting holes are provided on the mounting boss (18) and the mounting edge (213); the glass window (2) is used to be installed and fixed relative to the device body (1) by bolts (214) passing through the mounting holes on the mounting edge (213) and the mounting boss (18) in sequence.

8. The high temperature and high pressure cooling efficiency test device according to claim 7, characterized in that: Graphite gaskets are provided between the mounting boss (18) and the mounting edge (213), between the mounting shell (21) and the outer glass (22), and between the mounting shell (21) and the inner glass (23).

9. The high temperature and high pressure cooling efficiency test device according to claim 1, characterized in that: An interlayer space (19) is provided in the side wall of the device body (1), and a liquid inlet component (7) and a liquid discharge component (8) connected to the interlayer space (19) are provided at opposite ends of the device body (1), respectively. The liquid inlet component (7) is used to introduce cooling liquid into the interlayer space (19), and the liquid discharge component (8) is used to discharge the cooling liquid in the interlayer space (19).

10. The high temperature and high pressure cooling efficiency test device according to claim 1, characterized in that: The air inlet end of the device body (1) is provided with a first tapered pipe (101) that gradually contracts along the air inlet direction, and the air outlet end of the device body (1) is provided with a second tapered pipe (102) that gradually expands along the air outlet direction.

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