Modular turbine rotor flow and cooling test facility

Abstract

The application discloses a modularized turbine moving blade rotating flow and cooling test device, which comprises a test air inlet module, a test air outlet module and a test test module. The test air inlet module is provided with a pre-stage main air flow channel extending along a first direction. The test air outlet module is provided with a post-stage air outlet flow channel extending along the first direction. The test air outlet module and the test air inlet module are arranged at intervals in the first direction. One end of the test test module in the first direction is detachably connected with the test air inlet module. The other end of the test test module in the first direction is detachably connected with the test air outlet module. The test test module is provided with a test cavity, which is suitable for placing a test moving blade. The test air inlet module further comprises a guide vane, which is arranged in the pre-stage main air flow channel and adjacent to the test cavity. The guide vane can rotate around a second direction. The modularized turbine moving blade rotating flow and cooling test device has the advantages of more collected test data and lower test cost.

Description

Technical Field

[0001] This invention relates to the field of gas turbine technology, and more specifically, to a modular turbine blade rotating flow and cooling test device. Background Technology

[0002] Gas turbines, as widely used energy conversion devices, possess advantages such as low pollution, high efficiency, high flexibility, and compact structure, making them highly versatile and widely applied in power generation. To achieve higher gas turbine efficiency, it is necessary to continuously increase the turbine inlet temperature, which necessitates the effective cooling of high-temperature turbine components with air. To verify the flow performance and cooling effect of a single-stage turbine blade under rotating conditions, it is necessary to construct an efficient turbine blade rotating flow and cooling test device to conduct experimental research on high-temperature rotating turbine flow and cooling.

[0003] In related technologies, when conducting rotating flow and cooling tests on different single-stage turbine blades, it is necessary to redesign the test rotor and test cylinder. The test device can collect limited data, and multiple test devices need to be designed to collect different data, resulting in long test cycles and high test costs. It is difficult to meet the test requirements for efficient multi-objective optimization, which to some extent restricts the development of single-stage turbine blade rotating flow and cooling test technology. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention propose a modular turbine blade rotating flow and cooling experimental device. This device can collect a large amount of data, meeting the experimental requirements for efficient multi-objective optimization.

[0005] The modular turbine blade rotating flow and cooling test apparatus of this invention includes...

[0006] A test air intake module, the test air intake module having a pre-stage main airflow channel extending along a first direction, the pre-stage main airflow channel being annular;

[0007] A test exhaust module has a post-stage exhaust channel extending along the first direction, the post-stage exhaust channel being annular, the test exhaust module and the test intake module being arranged at intervals in the first direction, and the distance between the test exhaust module and the test intake module in the first direction being adjustable;

[0008] The test module is detachably connected at one end in the first direction to the test intake module and at the other end in the first direction to the test exhaust module. The test module has a test chamber that communicates with the pre-stage main airflow channel and the post-stage exhaust channel. The test chamber is suitable for placing test blades.

[0009] The test air intake module also includes a plurality of guide vanes arranged circumferentially along the main airflow channel before the stage. The guide vanes are located in the main airflow channel before the stage and adjacent to the test chamber. The guide vanes can rotate in the main airflow channel before the stage about a second direction, which is orthogonal to the first direction.

[0010] The modular turbine blade rotating flow and cooling test device of this invention solves the problems of long design and manufacturing cycle and high test cost of gas turbines, and has the advantages of high test flexibility, large amount of test data, high test efficiency and low test cost.

[0011] In some embodiments, the modular turbine blade rotating flow and cooling test apparatus further includes a test rotor module, the test rotor module comprising:

[0012] A test front shaft is located within the test air intake module;

[0013] The test rear shaft is located inside the test exhaust module and is coaxially arranged with the test front shaft. The test rear shaft and the test front shaft are spaced apart in the first direction, and the distance between the test rear shaft and the test front shaft in the first direction is adjustable.

[0014] A wheel is connected between the front and rear shafts of the test. The wheel is provided with a pre-stage spacing ring and a post-stage spacing ring. The test blade is adapted to be mounted on the wheel, and the root of the test blade is located between the pre-stage spacing ring and the post-stage spacing ring.

[0015] In some embodiments, the test intake module includes an outer intake cylinder and an inner intake cylinder, the outer intake cylinder being sleeved on the inner intake cylinder and spaced apart from the inner intake cylinder to form the pre-stage main airflow channel, the cross-sectional area of ​​the pre-stage main airflow channel being constant along the first direction.

[0016] In some embodiments, the test intake module further includes a steering assembly disposed on the intake outer cylinder and connected to the guide vane to drive the guide vane to rotate.

[0017] In some embodiments, the test intake module further includes an inner intake ring, which is detachably connected to one end of the inner intake cylinder adjacent to the test module, and a plurality of guide vanes are rotatably disposed on the inner intake ring.

[0018] In some embodiments, the test intake module further includes an intake guide support, which is disposed in the pre-stage main airflow channel, and one end of the intake guide support is connected to the outer intake cylinder, and the other end of the intake guide support is connected to the inner intake cylinder.

[0019] In some embodiments, the test air intake module further includes an air intake bearing housing and an air intake bearing support, both of which are disposed within the inner air intake cylinder. The air intake bearing housing is adapted to be arranged around the shaft supporting the test moving blade, and the air intake bearing support is connected between the inner circumferential surfaces of the air intake bearing housing and the inner air intake cylinder.

[0020] In some embodiments, the test exhaust module includes an outer exhaust cylinder and an inner exhaust cylinder. The outer exhaust cylinder is sleeved on the inner exhaust cylinder and spaced apart from the inner exhaust cylinder to form the post-stage exhaust flow channel. The cross-sectional area of ​​the post-stage exhaust flow channel gradually increases in the direction away from the test chamber. The central axis of the inner exhaust cylinder is collinear with the central axis of the inner intake cylinder.

[0021] In some embodiments, the test exhaust module further includes a plurality of guide baffles arranged circumferentially along the inner exhaust cylinder. The guide baffles are disposed in the exhaust flow channel after the stage and adjacent to the test chamber. One end of the guide baffle is connected to the outer exhaust cylinder, and the other end of the guide baffle is connected to the inner exhaust cylinder.

[0022] In some embodiments, the test exhaust module further includes an exhaust flow guide support, which is disposed in the exhaust flow channel after the stage, and one end of the exhaust flow guide support is connected to the outer exhaust cylinder, and the other end of the exhaust flow guide support is connected to the inner exhaust cylinder.

[0023] In some embodiments, the outer peripheral surface of the exhaust cylinder is adjacent to the central axis of the exhaust cylinder compared to the outer peripheral surface of the intake cylinder.

[0024] In some embodiments, the test exhaust module further includes an exhaust bearing housing and an exhaust bearing support, both of which are disposed within the exhaust inner cylinder. The exhaust bearing housing is adapted to be arranged around the rotating shaft supporting the test moving blade, and the exhaust bearing support is connected between the inner circumferential surfaces of the exhaust bearing housing and the exhaust inner cylinder.

[0025] In some embodiments, the test module includes a test outer cylinder and a test outer retaining ring. The test outer cylinder is sleeved on the test outer retaining ring and arranged at intervals from the test outer retaining ring. The test outer retaining ring surrounds the test cavity, and the cross-sectional area of ​​the test cavity gradually increases in the direction away from the test air intake module.

[0026] In some embodiments, the test module further includes a blade tip seal, which is disposed on the inner wall surface of the outer protective ring of the test, and the blade tip of the test moving blade is adapted to be arranged opposite to the blade tip seal.

[0027] In some embodiments, the test module further includes:

[0028] A pre-test sealing ring, which is detachably connected to the test intake module; and / or,

[0029] A post-test sealing ring is provided, which is detachably connected to the test exhaust module. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of a modular turbine blade rotating flow and cooling test device according to an embodiment of the present invention.

[0031] Figure 2 yes Figure 1 Enlarged diagram of point A in the middle.

[0032] Figure label:

[0033] Modular turbine blade rotating flow and cooling test device 100;

[0034] Test intake module 1; pre-stage main airflow channel 10; outer intake cylinder 11; inner intake cylinder 12; intake guide support 13; guide vane 14; inner intake retaining ring 15; steering assembly 16; linkage component 161; transmission component 162; intake cylinder seal 17; intake bearing support 18; intake bearing housing 19;

[0035] Test module 2; Test chamber 20; Test outer cylinder 21; Test outer protective ring 22; Blade tip seal 23; Pre-test sealing ring 24; Post-test sealing ring 25;

[0036] Test exhaust module 3; exhaust channel after stage 30; exhaust outer cylinder 31; exhaust inner cylinder 32; exhaust guide support 33; guide baffle 34; exhaust inner retaining ring; exhaust bearing support 35; exhaust bearing housing 36; exhaust cylinder seal 37;

[0037] Test rotor module 4; test moving blade 44; test front shaft 41; wheel 43; front stage spacer ring 42; rear stage spacer ring 45; test rear shaft 46; tie rod 47. Detailed Implementation

[0038] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0039] For ease of description, the first direction will be used below. Figure 1 Taking the example of consistent left and right directions in the middle, the technical solution of this application will be further described.

[0040] The modular turbine blade rotating flow and cooling test device 100 of this invention includes a test inlet module 1, a test exhaust module 3, and a test module 2. The test inlet module 1 has a pre-stage main airflow channel 10 extending along a first direction, which is annular. The test exhaust module 3 has a post-stage exhaust channel 30 extending along the first direction, which is annular. The test exhaust module 3 and the test inlet module 1 are arranged at intervals in the first direction, and the distance between the test exhaust module 3 and the test inlet module 1 in the first direction is adjustable. One end of the test module 2 in the first direction is detachably connected to the test inlet module 1, and the other end of the test module 2 in the first direction is detachably connected to the test exhaust module 3. The test module 2 has a test chamber 20, which communicates with the pre-stage main airflow channel 10 and the post-stage exhaust channel 30. The test chamber 20 is suitable for placing the test blade 44.

[0041] The test intake module 1 also includes a plurality of guide vanes 14 arranged circumferentially along the intake cylinder 12. The guide vanes 14 are located in the main airflow channel 10 before the stage and adjacent to the test chamber 20. The guide vanes 14 can rotate about a second direction relative to the intake cylinder 12. The second direction is orthogonal to the first direction.

[0042] For example, such as Figure 1 and Figure 2 As shown, the test intake module 1 is on the left side of the test module 2, and the test exhaust module 3 is on the right side of the test module 2. The test intake module 1 has an annular pre-stage main airflow channel 10 that extends in the left and right direction, and the test exhaust module 3 has an annular post-stage exhaust channel 30 that extends in the left and right direction.

[0043] For ease of description, the airflow in the pre-stage main airflow duct 10 will be referred to as the pre-stage airflow, and the airflow in the post-stage exhaust airflow duct 30 will be referred to as the post-stage airflow. The flow directions of the pre-stage and post-stage airflows are as follows: Figure 1 The arrow in the image indicates the direction.

[0044] In the modular turbine blade rotation flow and cooling test device 100 of this invention, during the test, the mainstream gas enters the pre-stage main flow channel 10 from the left end of the test inlet module 1 to become the pre-stage flow. The pre-stage flow then enters the test chamber 20 to drive the test blade 44 to rotate, and then enters the post-stage exhaust flow channel 30 to become the post-stage flow. Finally, the post-stage flow is discharged from the left end of the test exhaust module 3.

[0045] The modular turbine blade rotating flow and cooling test device 100 of this invention designs and manufactures the test module 2 according to the structural type and test requirements of the test blade 44. The length of the test module 2 in the left-right direction is determined based on the axial space required by the test blade 44 during the test. The test module 2 is designed and manufactured to be replaceable for different test blades 44. The test inlet module 1 can be reused and matched to different test measurement sections. By combining the flow channel pitch circle and flow channel height dimensions of the pre-stage main airflow channel 10, a universal standard module series is formed, which can significantly reduce the design and manufacturing cycle and cost of the test device. The test exhaust module 3 can be reused and matched to different test measurement sections. By combining the flow channel pitch circle and flow channel height dimensions of the post-stage exhaust channel 30, a universal standard module series is formed, which can significantly reduce the design and manufacturing cycle and cost of the test device.

[0046] The modular turbine blade rotating flow and cooling test device 100 of this invention has a test module 2 whose left end is detachably connected to the test inlet module 1, and its right end is detachably connected to the test exhaust module 3. During testing, the test inlet module 1 and the test exhaust module 3 are designed to be reusable, while the test module 2 is designed to be replaceable. For different tests, only the test module 2 needs to be replaced, and the distance between the test inlet module 1 and the test exhaust module 3 can be adjusted according to the actual operating conditions to proceed to the next set of tests.

[0047] For example, such as Figure 1 and Figure 2 As shown, multiple guide vanes 14 are provided between the inner intake cylinder 12 and the outer intake cylinder 11, arranged in a circle at intervals along the outer periphery of the inner intake cylinder 12. The guide vanes 14 are located at the right end of the test intake module 1 and adjacent to the test chamber 20. Their second direction is consistent with the radial direction of the inner intake cylinder 12, and their rotation axis is consistent with the diameter direction of the inner intake cylinder 12, allowing them to rotate along their own axis. Therefore, by adjusting the angle of the guide vanes 14, the airflow direction entering the test moving blade 44 can be adjusted without changing other structures. This allows for setting different intake angles according to the needs of the test moving blade 44, facilitating the study of the effects of different intake angles on the test moving blade 44, and enabling the collection of various data without redesigning the test apparatus.

[0048] The modular turbine blade rotating flow and cooling test device 100 of this invention solves the problems of long design and manufacturing cycle and high test cost of gas turbines, and has the advantages of high test flexibility, large amount of test data, high test efficiency and low test cost.

[0049] Optionally, flanges are provided at the left end of the outer intake cylinder 11 and the left end of the inner intake cylinder 12, and flanges are provided at the right end of the outer exhaust cylinder 31 and the right end of the inner exhaust cylinder 32.

[0050] In some embodiments, the modular turbine blade rotating flow and cooling test apparatus 100 further includes a test rotor module 4, which includes a test front shaft 41, a test rear shaft 46, and a wheel 43.

[0051] The test front shaft 41 is located inside the test air intake module 1;

[0052] The test rear shaft 46 is located inside the test exhaust module 3, and the test rear shaft 46 and the test front shaft 41 are arranged coaxially. The test rear shaft 46 and the test front shaft 41 are spaced apart in the first direction, and the distance between the test rear shaft 46 and the test front shaft 41 in the first direction is adjustable.

[0053] The wheel 43 is connected between the front test shaft 41 and the rear test shaft 46. The wheel 41 is provided with a pre-stage spacing ring 42 and a post-stage spacing ring 45. The test blade 44 is adapted to be installed on the wheel 43 and the root of the test blade 44 is located between the pre-stage spacing ring 42 and the post-stage spacing ring 45.

[0054] For example, such as Figure 1 and Figure 2 As shown, the wheel 43 is detachably connected to the front test shaft 41, and the wheel 43 is detachably connected to the rear test shaft 46. The test blade 44 is mounted on the wheel 43.

[0055] The test front shaft 41 is equipped with a front shaft diameter section and an axial thrust disk. The test front shaft 41 is supported and positioned by radial bearings and axial thrust bearings in the intake bearing housing 19. The test rear shaft 46 is equipped with a rear shaft diameter section, and the test rear shaft 42 is supported by radial bearings in the exhaust bearing housing 36. Multiple test blades 44 are evenly distributed along the circumference of the impeller 43. The number of test blades 44 is the same as that of the original turbine blades. The test blades 44 are fixed in the blade root grooves of the impeller 43 using fir tree-shaped blade roots. The outer contour of the impeller 43 adopts the same structural form as the impeller 43 of the original turbine, and the blade root grooves use blade root groove profiles that match the blade roots of the test blades 44.

[0056] During testing, if only the test blade 44 needs to be replaced, it can be removed from the wheel 43, and then a different type of test blade 44 can be replaced. The front test shaft 41, rear test shaft 46, and wheel 43 do not need to be replaced. Therefore, the front test shaft 41, rear test shaft 46, and wheel 43 can be reused, which helps reduce testing costs. If only the test blade 44 and wheel 43 need to be replaced, the front test shaft 41 and rear test shaft 46 are retained. Thus, the front test shaft 41 and rear test shaft 46 can be reused, which also helps reduce testing costs. If it is necessary to adjust the distance between the front test shaft 41 and the rear test shaft 46, a test module 2 with a different axial length can be used.

[0057] The test rotor module 4 also includes a pre-stage spacing ring 42 and a post-stage spacing ring 45. Both the pre-stage spacing ring 42 and the post-stage spacing ring 45 are mounted on the wheel 43, and the root of the test blade 44 is located between the pre-stage spacing ring 42 and the post-stage spacing ring 45. The pre-stage spacing ring 42 is used to adjust the pre-stage distance and counterweight of the test wheel 43 to adjust the shaft system characteristics of the test rotor module 4. The post-stage spacing ring 45 is used to adjust the post-stage distance and counterweight of the test wheel 43 to adjust the shaft system characteristics of the test rotor module 4. Thus, by replacing different pre-stage spacing rings 42 or post-stage spacing rings 45, the shaft system characteristics of the test rotor module 4 can be adjusted without replacing the entire test rotor module 4. This not only helps reduce testing costs but also allows for diverse testing methods.

[0058] In some other embodiments, the wheel 43 is also provided with a tie rod 47, and the pre-stage spacing ring 42, the post-stage spacing ring 45, the test blade 44, and the wheel 43 are provided with through holes along the left and right directions. The tie rod 47 is used to fix the pre-stage spacing ring 42, the post-stage spacing ring 45, the test blade 44, and the wheel 43 together.

[0059] Optionally, there may be multiple pull rods 47, which are arranged at circumferential intervals along the wheel 43.

[0060] In some embodiments, the test intake module 1 includes an outer intake cylinder 11 and an inner intake cylinder 12. The outer intake cylinder 11 is sleeved on the inner intake cylinder 12 and spaced apart from the inner intake cylinder 12 to form a pre-stage main airflow channel 10. The cross-sectional area of ​​the pre-stage main airflow channel 10 is constant along a first direction.

[0061] For example, such as Figure 1 and Figure 2As shown, the diameter of the outer intake cylinder 11 is larger than the diameter of the inner intake cylinder 12. The inner intake cylinder 12 and the outer intake cylinder 11 are arranged coaxially, forming an annular pre-stage main airflow passage 10 between them. The diameters of both the inner intake cylinder 12 and the outer intake cylinder 11 are constant. Therefore, the inner intake cylinder 12 and the outer intake cylinder 11 have a simple structure and are easy to manufacture.

[0062] In some embodiments, the test intake module 1 further includes a steering assembly 16, which is disposed on the intake outer cylinder 11 and is connected to the guide vane 14 to drive the guide vane 14 to rotate.

[0063] For example, such as Figure 1 and Figure 2 As shown, the steering assembly 16 is located on the outside of the intake outer cylinder 11. The steering assembly 16 includes a linkage 161 and a transmission 162. The linkage 161 is annular, and there are multiple transmission 162s. Each transmission 162 corresponds to a multiple guide vanes 14. One end of the transmission 162 is fixedly connected to the guide vane 14, and the other end of the transmission 162 is fixedly connected to the linkage 161. By rotating the linkage 161, the transmission 162 is driven to rotate, which in turn drives the guide vane 14 to rotate. Thus, the steering assembly 16 facilitates the control of the rotation angle of the guide vane 14, so as to adjust the position of the guide vane 14 and thus adjust the intake angle of the airflow before the stage.

[0064] In some embodiments, the test intake module 1 further includes an intake inner retaining ring 15, which is detachably connected to one end of the intake inner cylinder 12 adjacent to the test module 2, and a plurality of guide vanes 14 are rotatably disposed on the intake inner retaining ring 15.

[0065] For example, such as Figure 1 and Figure 2 As shown, the intake inner retaining ring 15 is annular and is connected to the right end of the intake inner cylinder 12. The root of the guide vane 14 is connected to the intake inner retaining ring 15. Thus, the intake inner retaining ring 15 facilitates the positioning and support of the guide vane 14.

[0066] Optionally, the outer intake cylinder 11 is provided with a plurality of mounting holes arranged circumferentially along the outer intake cylinder 11, and the inner intake retaining ring 15 is provided with the same number of mounting holes as the outer intake cylinder 11. The axis of the mounting holes on the inner intake retaining ring 15 is coaxial with the axis of the mounting holes on the outer intake cylinder 11. The top and root of the guide vane 14 are provided with rotating shafts, which cooperate with the mounting holes so that the guide vane 14 can rotate relative to the outer intake cylinder 11 and the inner intake retaining ring 15.

[0067] Optionally, the left end face of the intake inner retaining ring 15 is provided with a boss, and the right end face of the intake inner cylinder 12 is provided with a groove. The boss fits into the groove, thereby ensuring the fixed connection between the intake inner retaining ring 15 and the intake inner cylinder 12.

[0068] Optionally, an air seal plate is provided on the inner peripheral wall of the air intake inner retaining ring 15. The air seal plate can form a labyrinth seal with the outer edge boss of the test front shaft 41, thereby blocking the airflow in the test chamber 20 from entering the test air intake module 1 as much as possible, thereby improving the accuracy of the test results.

[0069] In some embodiments, the test intake module 1 further includes an intake guide support 13, which is disposed in the pre-stage main airflow channel 10, and one end of the intake guide support 13 is connected to the outer intake cylinder 11, and the other end of the intake guide support 13 is connected to the inner intake cylinder 12.

[0070] For example, such as Figure 1 and Figure 2 As shown, an intake guide support 13 is provided between the intake inner cylinder 12 and the intake outer cylinder 11. One end of the intake guide support 13 is fixedly connected to the intake outer cylinder 11, and the other end of the intake guide support 13 is fixedly connected to the intake inner cylinder 12. Thus, the intake inner cylinder 12 and the intake outer cylinder 11 can be fixed together by using the intake guide support 13.

[0071] In some embodiments, the test air intake module 1 further includes an air intake bearing housing 19 and an air intake bearing support 18, both of which are disposed within the air intake inner cylinder 12. The air intake bearing housing 19 is adapted to be arranged around the rotating shaft supporting the test moving blade 44, and the air intake bearing support 18 is connected between the inner circumferential surfaces of the air intake bearing housing 19 and the air intake inner cylinder 12.

[0072] For example, such as Figure 1 and Figure 2 As shown, a rotating shaft supporting the test moving blade 44 is provided inside the intake cylinder 12. An intake bearing housing 19 is provided on the outer periphery of the rotating shaft. A bearing is provided inside the intake bearing housing 19 and is connected to the rotating shaft. An intake bearing support 18 is provided between the outer peripheral wall of the intake bearing housing 19 and the inner peripheral wall of the intake cylinder 12. Thus, the intake bearing housing 19 and the intake bearing support 18 facilitate the rotation of the rotating shaft that supports the test moving blade 44. The intake bearing support 18 can be used to fix the intake cylinder 12 and the intake bearing housing 19 together.

[0073] In some embodiments, the test exhaust module 3 includes an outer exhaust cylinder 31 and an inner exhaust cylinder 32. The outer exhaust cylinder 31 is sleeved on the inner exhaust cylinder 32 and is spaced apart from the inner exhaust cylinder 32 to form a post-stage exhaust channel 30. The cross-sectional area of ​​the post-stage exhaust channel 30 gradually increases in the direction away from the test chamber 20. The central axis of the inner exhaust cylinder 32 is collinear with the central axis of the inner intake cylinder 12.

[0074] For example, such as Figure 1 and Figure 2As shown, the diameter of the outer exhaust cylinder 31 is larger than the diameter of the inner exhaust cylinder 32. The inner exhaust cylinder 32 and the outer exhaust cylinder 31 are arranged coaxially, and an annular exhaust flow channel 30 is formed between the inner exhaust cylinder 32 and the outer exhaust cylinder 31. The diameter of the outer exhaust cylinder 31 gradually increases from left to right, so as to convert part of the kinetic energy of the airflow after the stage into pressure potential energy, thereby increasing the pressure of the airflow after the stage.

[0075] Optionally, the diameter of the exhaust cylinder 31 gradually increases from left to right, and the expansion angle of the exhaust cylinder 31 is 5-10 degrees, which is used to diffuse the airflow after the stage and convert part of the kinetic energy into pressure potential energy.

[0076] In some embodiments, the test exhaust module 3 further includes a plurality of guide partitions 34 arranged circumferentially along the inner exhaust cylinder 32. The guide partitions 34 are located in the exhaust flow channel 30 after the stage and adjacent to the test chamber 20. One end of the guide partition 34 is connected to the outer exhaust cylinder 31, and the other end of the guide partition 34 is connected to the inner exhaust cylinder 32.

[0077] For example, such as Figure 1 and Figure 2 As shown, multiple guide baffles 34 are provided between the inner exhaust cylinder 32 and the outer exhaust cylinder 31, and the multiple guide baffles 34 are arranged in a circle at intervals along the outer periphery of the inner exhaust cylinder 32. The guide baffles 34 are located at the left end of the test exhaust module 3 and adjacent to the test chamber 20. One end of the guide baffle 34 is fixedly connected to the outer exhaust cylinder 31, and the other end of the guide baffle 34 is fixedly connected to the inner exhaust cylinder 32. Thus, by using the guide baffles 34, it is convenient to adjust the flow direction of the airflow after the stage, so that the airflow after the stage is evenly distributed in the exhaust channel 30 after the stage, which helps to improve the stability of the modular turbine blade rotation flow and cooling test device 100.

[0078] The guide baffle 34 is connected to the exhaust inner cylinder 32 and the exhaust outer cylinder 31. During the test, the guide baffle 34 can be reused, thereby reducing the test cost.

[0079] Optionally, the guide baffle 34 adopts a split arc segment structure, with each guide baffle 34 forming an arc segment body, and multiple arc segments bodies are evenly distributed along the circumference of the exhaust outer cylinder 31. An annular mounting groove is provided at the left end of the exhaust outer cylinder 31, and multiple arc segments bodies are fixed in the mounting groove at the left end of the exhaust outer cylinder 31.

[0080] Optionally, an air seal is provided on the inner side of the guide partition 34. The air seal is used to form a labyrinth seal with the outer edge boss of the test rear shaft 46, thereby blocking the airflow in the test chamber 20 from entering the test exhaust module 3 as much as possible, thereby improving the accuracy of the test results.

[0081] In some embodiments, the test exhaust module 3 further includes an exhaust guide support 33, which is disposed in the exhaust flow channel 30 after the stage, and one end of the exhaust guide support 33 is connected to the outer exhaust cylinder 31, and the other end of the exhaust guide support 33 is connected to the inner exhaust cylinder 32.

[0082] For example, such as Figure 1 and Figure 2 As shown, an exhaust guide support 33 is provided between the exhaust inner cylinder 32 and the exhaust outer cylinder 31. One end of the exhaust guide support 33 is fixedly connected to the exhaust outer cylinder 31, and the other end of the exhaust guide support 33 is fixedly connected to the exhaust inner cylinder 32. Thus, the exhaust inner cylinder 32 and the exhaust outer cylinder 31 can be fixed together by using the exhaust guide support 33.

[0083] In some embodiments, the outer peripheral surface of the exhaust cylinder 32 is adjacent to the central axis of the exhaust cylinder 32 compared to the outer peripheral surface of the intake cylinder 12.

[0084] For example, such as Figure 1 and Figure 2 As shown, the diameter of the outer peripheral surface of the exhaust cylinder 32 is smaller than the diameter of the outer peripheral surface of the intake cylinder 12. As a result, the cross-sectional area of ​​the exhaust flow channel 30 after the stage is increased, which is used to diffuse the airflow after the stage, thereby facilitating the conversion of the kinetic energy in the airflow after the stage into pressure potential energy.

[0085] In other embodiments, the diameter of the inner circumferential surface of the exhaust outer cylinder 31 is greater than or equal to the top diameter of the exhaust side of the test moving blade 44, and the diameter of the outer circumferential surface of the exhaust inner cylinder 32 is less than or equal to the root diameter of the exhaust side of the test moving blade 44.

[0086] In some embodiments, the test exhaust module 3 further includes an exhaust bearing housing 36 and an exhaust bearing support 35, both of which are disposed within the exhaust inner cylinder 32. The exhaust bearing housing 36 is adapted to be arranged around the rotating shaft supporting the test moving blade 44, and the exhaust bearing support 35 is connected between the exhaust bearing housing 36 and the inner circumferential surface of the exhaust inner cylinder 32.

[0087] For example, such as Figure 1 and Figure 2 As shown, a rotating shaft supporting the test moving blade 44 is provided inside the exhaust cylinder 32. An exhaust bearing housing 36 is provided on the outer periphery of the rotating shaft. A bearing is provided inside the exhaust bearing housing 36. The bearing is connected to the rotating shaft. The exhaust bearing supports the outer periphery of the exhaust bearing housing 36 and the inner periphery of the exhaust cylinder 32. Thus, the exhaust cylinder 32 and the exhaust bearing housing 36 can be fixed together by using the exhaust bearing support 35.

[0088] Optionally, an exhaust cylinder seal 37 is also provided in the exhaust cylinder 32. The exhaust cylinder seal 37 is located on the left side of the exhaust bearing housing 36 and is adjacent to the wheel 43. The exhaust cylinder seal 37 is used to isolate the space between the exhaust cylinder 32 and the test rear shaft 46, and to block the flow of gas from the rear side of the test rear shaft 46 into the exhaust cylinder 32 and the interior of the exhaust side bearing housing.

[0089] Optionally, the intake cylinder 12 also includes an intake cylinder seal 17, which is installed in the intake cylinder 12. The intake cylinder seal 17 is located on the right side of the intake bearing housing 19 and adjacent to the wheel 43. The intake cylinder seal 17 is used to isolate the space between the intake cylinder 12 and the test front shaft 41, and to block the flow of gas from the front side of the test front shaft 41 into the intake cylinder 12 and the interior of the intake side bearing housing.

[0090] In some embodiments, the test module 2 includes a test outer cylinder 21 and a test outer guard ring 22. The test outer cylinder 21 is sleeved on the test outer guard ring 22 and arranged at intervals from the test outer guard ring 22. The test outer guard ring 22 forms a test cavity 20, and the cross-sectional area of ​​the test cavity 20 gradually increases in the direction away from the test air intake module 1.

[0091] For example, such as Figure 1 and Figure 2 As shown, the outer test cylinder 21 is located outside the outer test retaining ring 22. The outer test retaining ring 22 is an annular shell. The left end of the outer test retaining ring 22 is connected to the intake outer cylinder 11, and the right end of the outer test retaining ring 22 is connected to the exhaust outer cylinder 31. The diameters of both the outer test retaining ring 22 and the outer test cylinder 21 gradually increase from left to right. The inner diameter of the flow channel at the front end of the outer test retaining ring 22 is the same as the diameter at the right end of the intake outer cylinder 11, and the inner diameter of the flow channel at the rear end of the outer test retaining ring 22 is the same as the diameter at the left end of the exhaust outer cylinder 31.

[0092] There is a gap between the outer test ring 22 and the outer test cylinder 21. Therefore, when the outer test ring 22 is deformed due to thermal expansion and contraction, the outer test cylinder 21 will not be affected by the outer test ring 22, and the outer test cylinder 21 can still maintain good sealing performance. Moreover, the cooling airflow can stay between the outer test cylinder 21 and the outer test ring 22 to cool the outer test ring 22.

[0093] Optionally, the test outer cylinder 21, the intake outer cylinder 11 and the exhaust outer cylinder 31 are all provided with flanges. The left end of the test outer cylinder 21 is connected to the intake outer cylinder 11 through the flange, and the right end of the test outer cylinder 21 is connected to the exhaust outer cylinder 31 through the flange.

[0094] Optionally, the outer test ring 22 has bosses at both ends, the right end of the intake cylinder 11 has a groove, the top of the guide partition 34 has a groove, the boss at the left end of the outer test ring 22 engages with the groove of the intake cylinder 11, and the boss at the right end of the outer test ring 22 engages with the groove at the top of the guide partition 34.

[0095] In some embodiments, the test module 2 further includes a blade tip seal 23, which is disposed on the inner wall surface of the test outer protective ring 22, and the blade tip of the test moving blade 44 is adapted to be arranged opposite to the blade tip seal 23.

[0096] For example, such as Figure 1 and Figure 2 As shown, a blade tip seal 23 is provided on the inner peripheral wall of the outer protective ring 22 of the test, and the blade tip seal 23 and the test moving blade 44 are arranged opposite to each other in the inner and outer directions.

[0097] Therefore, by using the blade tip air seal 23, the airflow at the left end of the test blade 44 can be prevented from going around to the right end of the test blade 44 from the top of the test blade 44, thereby improving the work efficiency of the airflow.

[0098] In some embodiments, the test module 2 further includes a pre-test sealing ring 24, which is detachably connected to the test air intake module 1.

[0099] For example, such as Figure 1 and Figure 2 As shown, the left end face of the pre-test sealing ring 24 has a boss, and the right end face of the intake inner retaining ring 15 has a groove. The boss fits into the groove, thereby ensuring the fixed connection between the pre-test sealing ring 24 and the intake inner retaining ring 15. Alternatively, the pre-test sealing ring 24 and the intake inner retaining ring 15 are connected by bolts.

[0100] Therefore, the right end face of the pre-test sealing ring 24 and the left end face of the test moving blade 44 together form a sealing structure, thereby blocking the airflow in the test chamber 20 from entering the test air intake module 1 as much as possible, thereby improving the accuracy of the test results.

[0101] In some embodiments, the test module 2 further includes a post-test sealing ring 25, which is detachably connected to the test exhaust module 3.

[0102] For example, such as Figure 1 and Figure 2 As shown, after the test, the right end face of the sealing ring 25 is provided with a boss, and the root of the guide partition 34 is provided with a groove. The boss fits into the groove, thereby ensuring the fixed connection between the sealing ring 25 and the exhaust flow guide support 33 after the test.

[0103] Therefore, the left end face of the sealing ring 25 and the right end face of the test moving blade 44 together form a sealing structure, thereby blocking the airflow in the test chamber 20 from entering the test exhaust module 3 as much as possible, thus improving the accuracy of the test results.

[0104] The modular turbine blade rotation flow and cooling test device 100 of this invention is also provided with a cooling structure. Cooling channels are provided in the outer intake cylinder 11, the inner intake cylinder 12 and the intake guide support 13, and cooling channels are provided in the outer exhaust cylinder 31, the inner exhaust cylinder 32 and the exhaust guide support 33.

[0105] It should be noted that in the modular turbine blade rotating flow and cooling test device 100 of the embodiments of the present invention, cooling gas flows through the guide vane 14, test blade 44, guide baffle 34 and other devices, and the flow direction of the cooling gas is approximately as follows: Figure 2 As shown by the arrow in the image.

[0106] Figure 2 The image only shows the flow direction of a portion of the cooling airflow.

[0107] The modular turbine blade rotating flow and cooling test apparatus 100 of this invention can perform at least the following tests.

[0108] The first method involves replacing only the test blade 44, thereby allowing the study of the flow and cooling performance of test blades 44 with different blade structures under the same conditions.

[0109] The second method involves replacing only the test blade 44 and the wheel 43, thereby verifying the component performance of the test blade 44 and the wheel 43 with different structural forms.

[0110] The third approach involves adjusting the design of the test blade 44, the wheel 43, the pre-stage spacing ring 42, and the post-stage spacing ring 45. This allows for obtaining various test conditions, such as different blade installation angles, pre-stage distances, and post-stage distances, thereby narrowing the design and manufacturing scope of the test device and reducing the manufacturing costs of the test pieces and the test device.

[0111] The fourth method involves adjusting the pre-stage spacing ring 42, post-stage spacing ring 45, pre-test sealing ring 24, post-test sealing ring 25, and test outer protective ring 22. Without changing other test device components such as the test moving blade 44 and the wheel 43, the method tests the influence of different axial distances between the guide vanes 14 and the test moving blade 44 on the turbine's rotating flow and cooling effect. This verifies the aerodynamic influence of the guide vane 14 wake flow on the moving blade, obtains turbine aerodynamic performance data under various axial distance conditions, and provides test data for intra-stage guide vane distance matching and inter-stage distance matching.

[0112] The modular turbine blade rotating flow and cooling test device 100 of this invention adopts a modular design method. The test inlet module 1 and the test exhaust module 3 are designed as reusable modular components. According to actual test requirements, the wheel 43, test blade 44, pre-stage spacing ring 42, and post-stage spacing ring 45 of the test test module 2 and the test rotor module 4 are selectively designed as replaceable modular components. Furthermore, the test front shaft 41 and the test shaft of the test rotor module 4 are designed as reusable components. The guide vane 14 is integrated into the test inlet module 1, and the guide baffle 34 is integrated into the test exhaust module 3. This effectively reduces the design and manufacturing scope of the test device and test piece, solves the problems of long design and manufacturing cycle and high test cost of turbine blade rotating flow and cooling test device and method, and greatly improves the test efficiency of turbine blade rotating flow and cooling test.

[0113] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0114] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0115] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0116] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0117] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0118] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A modular turbine blade rotating flow and cooling test apparatus, characterized in that, include: A test air intake module, the test air intake module having a pre-stage main airflow channel extending along a first direction, the pre-stage main airflow channel being annular; A test exhaust module has a post-stage exhaust channel extending along the first direction, the post-stage exhaust channel being annular, the test exhaust module and the test intake module being arranged at intervals in the first direction, and the distance between the test exhaust module and the test intake module in the first direction being adjustable; The test module includes a test outer cylinder and a test outer retaining ring. The test outer cylinder is sleeved on the test outer retaining ring and spaced apart from it. The test outer retaining ring forms a test cavity, the cross-sectional area of ​​which gradually increases in the direction away from the test intake module. One end of the test module in the first direction is detachably connected to the test intake module, and the other end of the test module in the first direction is detachably connected to the test exhaust module. The test module has a test cavity that communicates with the pre-stage main airflow channel and the post-stage exhaust channel. The test cavity is suitable for placing test blades. The test air intake module also includes a plurality of guide vanes arranged circumferentially along the main airflow channel before the stage. The guide vanes are disposed in the main airflow channel before the stage and adjacent to the test chamber. The guide vanes can rotate around a second direction in the main airflow channel before the stage, and the second direction is orthogonal to the first direction. Test rotor module, the test rotor module comprising: A test front shaft is located within the test air intake module; The test rear shaft is located inside the test exhaust module and is coaxially arranged with the test front shaft. The test rear shaft and the test front shaft are spaced apart in the first direction, and the distance between the test rear shaft and the test front shaft in the first direction is adjustable. A wheel is connected between the front and rear shafts of the test. The wheel is provided with a pre-stage spacing ring and a post-stage spacing ring. The test blade is adapted to be mounted on the wheel, and the root of the test blade is located between the pre-stage spacing ring and the post-stage spacing ring.

2. The modular turbine blade rotating flow and cooling test apparatus according to claim 1, characterized in that, The test air intake module includes an outer air intake cylinder and an inner air intake cylinder. The outer air intake cylinder is sleeved on the inner air intake cylinder and spaced apart from the inner air intake cylinder to form the pre-stage main airflow channel. The cross-sectional area of ​​the pre-stage main airflow channel is constant along the first direction.

3. The modular turbine blade rotating flow and cooling test apparatus according to claim 2, characterized in that, The test intake module also includes a steering assembly, which is mounted on the intake outer cylinder and connected to the guide vane to drive the guide vane to rotate.

4. The modular turbine blade rotating flow and cooling test apparatus according to claim 2, characterized in that, The test intake module also includes an intake inner holding ring, which is detachably connected to one end of the intake inner cylinder adjacent to the test module, and a plurality of guide vanes are rotatably disposed on the intake inner holding ring.

5. The modular turbine blade rotating flow and cooling test apparatus according to claim 2, characterized in that, The test intake module also includes an intake guide support, which is located in the main airflow channel before the stage, and one end of the intake guide support is connected to the outer intake cylinder, while the other end of the intake guide support is connected to the inner intake cylinder.

6. The modular turbine blade rotating flow and cooling test apparatus according to claim 5, characterized in that, The test air intake module also includes an air intake bearing housing and an air intake bearing support. Both the air intake bearing housing and the air intake bearing support are located inside the air intake inner cylinder. The air intake bearing housing is adapted to be arranged around the rotating shaft supporting the test moving blade. The air intake bearing support is connected between the inner circumferential surfaces of the air intake bearing housing and the air intake inner cylinder.

7. The modular turbine blade rotating flow and cooling test apparatus according to claim 5, characterized in that, The test exhaust module includes an outer exhaust cylinder and an inner exhaust cylinder. The outer exhaust cylinder is sleeved on the inner exhaust cylinder and spaced apart from the inner exhaust cylinder to form the post-stage exhaust flow channel. The cross-sectional area of ​​the post-stage exhaust flow channel gradually increases in the direction away from the test chamber. The central axis of the inner exhaust cylinder is collinear with the central axis of the inner intake cylinder.

8. The modular turbine blade rotating flow and cooling test apparatus according to claim 7, characterized in that, The test exhaust module also includes a plurality of guide baffles arranged circumferentially along the inner exhaust cylinder. The guide baffles are located in the exhaust flow channel after the stage and adjacent to the test chamber. One end of the guide baffle is connected to the outer exhaust cylinder, and the other end of the guide baffle is connected to the inner exhaust cylinder.

9. The modular turbine blade rotating flow and cooling test apparatus according to claim 7, characterized in that, The test exhaust module also includes an exhaust flow guide support, which is located in the exhaust flow channel after the stage, and one end of the exhaust flow guide support is connected to the outer exhaust cylinder, while the other end of the exhaust flow guide support is connected to the inner exhaust cylinder.

10. The modular turbine blade rotating flow and cooling test apparatus according to claim 7, characterized in that, The outer peripheral surface of the exhaust cylinder is closer to the central axis of the exhaust cylinder than the outer peripheral surface of the intake cylinder.

11. The modular turbine blade rotating flow and cooling test apparatus according to claim 7, characterized in that, The test exhaust module also includes an exhaust bearing housing and an exhaust bearing support, both of which are located inside the exhaust inner cylinder. The exhaust bearing housing is adapted to be arranged around the rotating shaft supporting the test moving blade, and the exhaust bearing support is connected between the inner circumferential surfaces of the exhaust bearing housing and the exhaust inner cylinder.

12. The modular turbine blade rotating flow and cooling test apparatus according to any one of claims 1-11, characterized in that, The test module also includes a blade tip gas seal, which is disposed on the inner wall of the outer protective ring of the test, and the blade tip of the test moving blade is adapted to be arranged opposite to the blade tip gas seal.

13. The modular turbine blade rotating flow and cooling test apparatus according to claim 12, characterized in that, The test module also includes: A pre-test sealing ring, which is detachably connected to the test intake module; and / or, A post-test sealing ring is provided, which is detachably connected to the test exhaust module.

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