Plane cascade test bench with adjustable incoming flow attack angle
By designing a plane cascade test bench with adjustable angle of attack in flow, adopting flexible and efficient mechanical structure of variable angle of attack and high-precision probe driving mechanism, the problem of reduced test accuracy and inconvenience in testing when the angle of attack in flow in the prior art is solved, and efficient and reliable acquisition of test data is achieved.
Patent Information
- Application Number
- CN202510432598.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-08
- Publication Date
- 2025-06-27
AI Technical Summary
When changing the incoming flow attack angle, the existing planar cascade test bench needs to be repeatedly disassembled and assembled, resulting in reduced test accuracy, increased design cost and inconvenient testing.
A planar cascade test bench with adjustable inflow angle of attack was designed, and a flexible and efficient variable-attack mechanical structure and a high-precision probe driving mechanism was adopted. Especially through the real-time sealed probe groove design, an accurate and reliable in-rheological angle of attack was achieved.
It realizes rapid switching of tests with different angles of attack without reducing the test accuracy, which improves the controllability and reliability of the test and reduces the cost of design and testing.
Smart Images
Figure CN120213474A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of impeller machinery tests, and particularly to a planar cascade test bench with adjustable incoming flow attack angle. Background Art
[0002] In existing impeller machinery, from large aero-engine turbines to small UAV rotors, the incoming flow attack angle often changes during off-design operation. The evaluation of relevant aerodynamic heat transfer performance and optimization design need to be verified through planar cascade tests. Existing planar cascade test benches usually design the planar cascade test section for different attack angles respectively after determining the incoming flow attack angle, with one set of test pieces for each attack angle. During the installation and testing process, the test section needs to be repeatedly disassembled and assembled according to different attack angles. On the one hand, it reduces the test accuracy and increases the design and processing costs. On the other hand, it brings great inconvenience to the testing. Summary of the Invention
[0003] The purpose of the present invention is to provide a planar cascade test bench with adjustable incoming flow attack angle to solve the problems raised in the background art.
[0004] To achieve the above purpose, the present invention provides the following technical solution: A planar cascade test bench with adjustable incoming flow attack angle, including a heating device. The heating device includes a copper electrode, a wire mesh, and an epoxy resin board for controlling the inlet temperature. One side of the heating device is fixedly connected with a contraction section, and the side of the contraction section away from the heating device is fixedly connected with a connector. The connector includes a flow channel bottom plate, side plates, and a top plate. An inlet boundary layer bleeding device and an optical visual window are fixedly installed on the top plate. The optical visual window includes an optical glass and a bushing, providing an optical visualization window for heat transfer, PIV and other heat transfer and aerodynamic tests. An attack angle adjustment mechanism for the cascade installation platform is arranged inside the flow channel bottom plate, and a slide bar is slidably connected inside the flow channel bottom plate. The attack angle adjustment mechanism for the cascade installation platform includes a rotating orifice plate and blades. The rotating orifice plate is rotatably connected inside the flow channel bottom plate, and evenly distributed blades are arranged inside the rotating orifice plate. The blades correspond to the connector. A displacement mechanism is fixedly installed on the attack angle adjustment mechanism for the cascade installation platform. A probe clamping and driving mechanism is arranged on the upper side of the displacement mechanism. A five-hole probe is fixedly installed on the probe clamping and driving mechanism. The slide bar corresponds to the five-hole probe. A tip clearance adjustment mechanism is fixedly connected to the lower side of the blade.
[0005] The staff loosened the three groups of adjusting studs that fixed the flow channel bottom plate and the fixed bottom plate, making the attack angle adjusting mechanism of the blade cascade installation platform in an active state with respect to the flow channel bottom plate. Subsequently, the staff pushed the attack angle adjusting mechanism of the blade cascade installation platform, the displacement mechanism, the probe clamping and driving mechanism, and the tip clearance adjusting mechanism to rotate within the flow channel bottom plate through the rotating orifice plate. After the sliding grooves corresponding to the slide bars on the rotating orifice plate were aligned with the sliding grooves corresponding to the slide bars on the next flow channel bottom plate, an external positioning pin was inserted into the positioning pin holes on the rotating orifice plate and the flow channel bottom plate for preliminary positioning; The flow channel bottom plate and the fixed bottom plate were fixed through the adjusting studs, thereby fastening the adjusted state. Thus, the switching between two attack angles was completed; Furthermore, two side plates were fixedly connected to the upper side of the flow channel bottom plate, and a top plate was fixedly connected to the upper sides of the two side plates.
[0006] Furthermore, the inlet boundary layer bleeding device includes a suction hood, a mesh plate is arranged inside the suction hood, and a suction groove corresponding to the suction hood is opened on the top plate.
[0007] Furthermore, the attack angle adjusting mechanism of the blade cascade installation platform further includes adjusting studs, locking studs, positioning pin holes, an inlet turbulence grid, an inlet reset probe, an inlet boundary layer probe, and a fixed bottom plate. The lower side of the flow channel bottom plate is fixedly connected to the fixed bottom plate through three groups of adjusting studs. The upper side of the fixed bottom plate is fixedly connected to the rotating orifice plate through multiple groups of locking studs. Two groups of positioning pin holes are opened on both the rotating orifice plate and the flow channel bottom plate and correspond to each other. An inlet turbulence grid is fixedly connected to the inner sides of the flow channel bottom plate, the side plates, and the top plate, and the inlet turbulence grid corresponds to the contraction section.
[0008] The inlet turbulence grid is a mesh structure with a spacing of 14.5 mm, a width of 1 mm, and a thickness of 3 mm, and is used for inlet turbulence control. The width of this grid can be adjusted according to the requirements of turbulence; Furthermore, an inlet reset probe and an inlet boundary layer probe are fixedly installed on the rotating orifice plate, and the upper parts of the inlet reset probe and the inlet boundary layer probe are arranged inside the cavity formed by the flow channel bottom plate, the side plates, and the top plate.
[0009] Furthermore, the displacement mechanism includes a motor, a track plate, and a lead screw. The upper side of the fixed bottom plate is fixedly connected to the track plate. A lead screw is rotatably connected between the two ends of the track plate. One end of the track plate is fixedly connected to the motor, and the output end of the motor is fixedly connected to one end of the lead screw.
[0010] Further, the probe clamping and driving mechanism includes a probe driving block, a slide bar connecting block, a probe locking block, a probe mounting plate, and a probe slot. The upper side of the track plate is slidably connected with the probe driving block. The probe driving block is threadedly connected to the lead screw. The outer side of the probe driving block is fixedly connected with the slide bar connecting block. The slide bar connecting block is fixedly connected to the slide bar. The upper side of the probe driving block is fixedly connected with the probe mounting plate. The probe locking block is fixedly connected to the probe mounting plate. The probe locking block is fixedly connected to the five-hole probe. The rotating hole plate is provided with a probe slot corresponding to the five-hole probe.
[0011] When the five-hole probe needs to perform a sweep, by starting the motor, the motor drives the lead screw to rotate. During the rotation of the lead screw, the probe driving block is driven to perform a linear slide on the track plate. The probe driving block drives the slide bar connecting block and the probe locking block fixedly connected thereto to move synchronously, thereby driving the five-hole probe to perform a sweep. Since the slide bar is provided with a through hole corresponding to the five-hole probe, the five-hole probe penetrates the slide bar, and the rotating hole plate is provided with a probe slot corresponding to the five-hole probe. The five-hole probe and the slide bar perform synchronous linear motion along the track plate. During the motion, the slide bar seals the probe slot on the rotating hole plate in real time, thereby minimizing the disturbance of the fluid leakage at the probe slot to the flow field and further improving the probe test accuracy. Further, the tip clearance adjusting mechanism includes a blade mounting seat and a lifting table. Two groups of lifting tables are fixedly connected to the upper side of the fixed bottom plate. The upper side of the lifting table is fixedly connected with the blade mounting seat. The blade mounting seat is fixedly connected with the blade.
[0012] When the clearance of the blade needs to be adjusted, control the two groups of lifting tables to start. The lifting tables drive the blade to rise or fall through the blade mounting seat. Further, the rotating hole plate and the flow channel bottom plate are provided with chutes corresponding to the slide bar, and there are multiple groups of chutes on the flow channel bottom plate, and each group is distributed at intervals of 5° around the rotating hole plate.
[0013] Compared with the prior art, the present invention provides a planar cascade test bench with adjustable incoming flow attack angle, and has the following beneficial effects: In addition to achieving controllable and measurable test inlet boundary conditions of a conventional fixed angle of attack planar cascade test bench, through a flexible and efficient variable angle of attack mechanical structure design, in cooperation with a high-precision probe drive mechanism, especially the real-time sealing design for the probe slot, accurate and reliable test boundary conditions for variable angle of attack of the incoming flow are achieved, providing a reliable guarantee for further obtaining accurate pneumatic heat transfer test data. This device adopts a modular design concept and realizes process optimization through a scientific and reasonable structural layout. In cooperation with a high-precision angle of attack adjustment mechanism, a stable and uniform flow field is formed, and different turbulence intensity requirements can be met simultaneously. The combined application of a precision guide rail and a servo drive system enables the angle of attack setting accuracy to reach ±0.2°, effectively guaranteeing the experimental reproducibility of the boundary conditions and laying a solid foundation for the reliability and repeatability of experimental data. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a schematic three-dimensional structure diagram of the whole of the present invention; Figure 2 is a schematic exploded three-dimensional structure diagram of the present invention; Figure 3 is a schematic exploded three-dimensional structure diagram of the present invention from another angle; Figure 4 is a schematic side planar structure diagram of the whole of the present invention; Figure 5 is a schematic three-dimensional structure diagram of the angle of attack adjustment mechanism of the cascade mounting table of the present invention; Figure 6 is a schematic combined three-dimensional structure diagram of the rotating orifice plate and the flow channel bottom plate of the present invention; Figure 7 is a schematic structure diagram of the probe slot of the present invention; Figure 8 is a schematic three-dimensional structure diagram of the probe clamping and driving mechanism of the present invention.
[0015] In the figures: 1. heating device; 2. contraction section; 3. inlet boundary layer drainage device; 4. optical visual window; 5. angle of attack adjustment mechanism of the cascade mounting table; 51. rotating orifice plate; 52. adjusting stud; 53. locking stud; 54. positioning pin; 55. inlet turbulence grid; 56. inlet reset probe; 57. inlet boundary layer probe; 58. fixed bottom plate; 59. blade; 6. slide bar; 7. flow channel bottom plate; 8. displacement mechanism; 9. five-hole probe; 10. probe clamping and driving mechanism; 101. probe drive block; 102. slide bar connection block; 103. probe lock block; 104. probe mounting plate; 105. probe slot; 11. tip clearance adjustment mechanism. DETAILED DESCRIPTION OF THE INVENTION
[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. Embodiment
[0017] Please refer to Figures 1-8 , a planar cascade test bench with adjustable incoming flow angle of attack, including a heating device 1. The heating device 1 includes a copper electrode, a wire mesh, and an epoxy resin plate for controlling the inlet temperature. One side of the heating device 1 is fixedly connected to a contraction section 2. The side of the contraction section 2 away from the heating device 1 is fixedly connected to a connecting member, and the connecting member includes a flow channel bottom plate 7, side plates, and a top plate. An inlet boundary layer bleeding device 3 and an optical visual window 4 are fixedly installed on the top plate. The optical visual window 4 includes an optical glass and a bushing, providing an optical visualization window for heat transfer, PIV and other heat transfer and aerodynamic tests. A cascade installation table angle of attack adjustment mechanism 5 is arranged inside the flow channel bottom plate 7, and a slide bar 6 is slidably connected to the inside of the flow channel bottom plate 7. The cascade installation table angle of attack adjustment mechanism 5 includes a rotating orifice plate 51 and blades 59. The rotating orifice plate 51 is rotatably connected to the inside of the flow channel bottom plate 7. The inside of the rotating orifice plate 51 is provided with evenly distributed blades 59, and the blades 59 correspond to the connecting member. A displacement mechanism 8 is fixedly installed on the cascade installation table angle of attack adjustment mechanism 5. A probe clamping and driving mechanism 10 is arranged on the upper side of the displacement mechanism 8. A five-hole probe 9 is fixedly installed on the probe clamping and driving mechanism 10. The slide bar 6 corresponds to the five-hole probe 9, and a tip clearance adjustment mechanism 11 is fixedly connected to the lower side of the blade 59.
[0018] The staff loosens three groups of adjusting studs 52 fixed between the flow channel bottom plate 7 and the fixed bottom plate 58, so that the cascade installation table angle of attack adjustment mechanism 5 and the flow channel bottom plate 7 are in an active state. Subsequently, the staff pushes the cascade installation table angle of attack adjustment mechanism 5, the displacement mechanism 8, the probe clamping and driving mechanism 10, and the tip clearance adjustment mechanism 11 to rotate in the flow channel bottom plate 7 through the rotating orifice plate 51. After the chute on the rotating orifice plate 51 corresponding to the slide bar 6 is aligned with the chute on the next flow channel bottom plate 7 corresponding to the slide bar 6, an external positioning pin is inserted into the positioning pin holes 54 on the rotating orifice plate 51 and the flow channel bottom plate 7 for preliminary positioning. The flow channel bottom plate 7 and the fixed bottom plate 58 are fixed through the adjusting studs 52, and then the adjusted state is tightened. Thus, the switching between two angles of attack is completed. Further, two groups of side plates are fixedly connected to the upper side of the flow channel bottom plate 7, and a top plate is fixedly connected to the upper sides of the two groups of side plates.
[0019] Further, the inlet boundary layer flow discharge device 3 includes a suction hood. A mesh plate is arranged on the inner side of the suction hood, and a suction groove corresponding to the suction hood is formed on the top plate.
[0020] Further, the blade cascade mounting table angle of attack adjusting mechanism 5 further includes an adjusting stud 52, a locking stud 53, a positioning pin hole 54, an inlet turbulence grid 55, an inlet reset probe 56, an inlet boundary layer probe 57, and a fixed bottom plate 58. The lower side of the flow channel bottom plate 7 is fixedly connected to the fixed bottom plate 58 through three groups of adjusting studs 52. The upper side of the fixed bottom plate 58 is fixedly connected to the rotary orifice plate 51 through multiple groups of locking studs 53. Two groups of positioning pin holes 54 are formed on both the rotary orifice plate 51 and the flow channel bottom plate 7 and correspond to each other. The inlet turbulence grid 55 is fixedly connected to the inner sides of the flow channel bottom plate 7, the side plates, and the top plate, and the inlet turbulence grid 55 corresponds to the contraction section 2.
[0021] The inlet turbulence grid 55 is a mesh structure with a spacing of 14.5 mm, a width of 1 mm, and a thickness of 3 mm, and is used for inlet turbulence control. The width of the grid can be adjusted according to the requirements of turbulence. Further, an inlet reset probe 56 and an inlet boundary layer probe 57 are fixedly installed on the rotary orifice plate 51. The upper parts of the inlet reset probe 56 and the inlet boundary layer probe 57 are arranged inside the cavity formed by the flow channel bottom plate 7, the side plates, and the top plate.
[0022] Further, the displacement mechanism 8 includes a motor, a track plate, and a lead screw. The upper side of the fixed bottom plate 58 is fixedly connected to the track plate. A lead screw is rotatably connected between the two ends of the track plate. One end of the track plate is fixedly connected to the motor, and the output end of the motor is fixedly connected to one end of the lead screw.
[0023] Further, the probe clamping and driving mechanism 10 includes a probe driving block 101, a slide bar connecting block 102, a probe locking block 103, a probe mounting plate 104, and a probe groove 105. The probe driving block 101 is slidably connected to the upper side of the track plate. The probe driving block 101 is in threaded connection with the lead screw. The outer side of the probe driving block 101 is fixedly connected to the slide bar connecting block 102. The slide bar connecting block 102 is fixedly connected to the slide bar 6. The upper side of the probe driving block 101 is fixedly connected to the probe mounting plate 104. The probe locking block 103 is fixedly connected to the probe mounting plate 104. The probe locking block 103 is fixedly connected to the five-hole probe 9. A probe groove 105 corresponding to the five-hole probe 9 is formed on the rotary orifice plate 51.
[0024] When the five-hole probe 9 needs to be swept, the motor is started. The motor drives the lead screw to rotate. During the rotation of the lead screw, the probe drive block 101 is driven to slide linearly on the track plate. The probe drive block 101 drives the slide bar connection block 102 and the probe lock block 103 fixedly connected thereto to move synchronously, thereby driving the five-hole probe 9 to be swept; Since through holes corresponding to the five-hole probe 9 are provided on the slide bar 6, the five-hole probe 9 penetrates the slide bar 6, and a probe groove 105 corresponding to the five-hole probe 9 is provided on the rotary orifice plate 51. The five-hole probe 9 and the slide bar 6 perform synchronous linear motion along the track plate. During the motion, the slide bar 6 seals the probe groove 105 on the rotary orifice plate 51 in real time, thereby minimizing the disturbance of the fluid leakage at the probe groove 105 to the flow field and further improving the probe test accuracy; Furthermore, the tip clearance adjusting mechanism 11 includes a blade mounting seat and a lifting table. Two groups of lifting tables are fixedly connected to the upper side of the fixed bottom plate 58. The upper side of the lifting table is fixedly connected to the blade mounting seat, and the blade mounting seat is fixedly connected to the blade 59.
[0025] When the clearance of the blade 59 needs to be adjusted, the two groups of lifting tables are controlled to start. The lifting tables drive the blade 59 to rise or fall through the blade mounting seat; Furthermore, the rotary orifice plate 51 and the flow channel bottom plate 7 are provided with chutes corresponding to the slide bar 6, and multiple groups of chutes are provided on the flow channel bottom plate 7, and each group is distributed at intervals of 5° around the rotary orifice plate 51.
[0026] The specific usage mode and function of this embodiment: When the incoming flow angle of attack needs to be adjusted, the staff loosens the three adjusting studs 52 fixed between the flow channel bottom plate 7 and the fixed bottom plate 58, so that the vane cascade mounting table angle of attack adjusting mechanism 5 and the flow channel bottom plate 7 are in an active state. Subsequently, the staff pushes the vane cascade mounting table angle of attack adjusting mechanism 5, the displacement mechanism 8, the probe clamping and driving mechanism 10, and the tip clearance adjusting mechanism 11 to rotate in the flow channel bottom plate 7 through the rotary orifice plate 51. After the chute corresponding to the slide bar 6 on the rotary orifice plate 51 is aligned with the chute corresponding to the slide bar 6 on the next flow channel bottom plate 7, an external positioning pin is inserted into the positioning pin holes 54 on the rotary orifice plate 51 and the flow channel bottom plate 7 to perform preliminary positioning; Then, the flow channel bottom plate 7 and the fixed bottom plate 58 are fixed through the adjusting studs 52, and the adjusted state is tightened. Thus, the switching between two angles of attack is completed; When the five-hole probe 9 needs to be swept, the motor is started, and the motor drives the lead screw to rotate. During the rotation of the lead screw, the probe drive block 101 is driven to slide linearly on the track plate. The probe drive block 101 drives the slide bar connecting block 102 and the probe lock block 103 fixedly connected thereto to move synchronously, thereby driving the five-hole probe 9 to be swept; Since through holes corresponding to the five-hole probe 9 are provided on the slide bar 6, the five-hole probe 9 penetrates the slide bar 6, and probe slots 105 corresponding to the five-hole probe 9 are provided on the rotary hole plate 51. The five-hole probe 9 and the slide bar 6 perform synchronous linear motion along the track plate. During the motion, the slide bar 6 seals the probe slots 105 on the rotary hole plate 51 in real time, thereby minimizing the disturbance of the flow field caused by fluid leakage at the probe slots 105 and further improving the probe test accuracy; The probe clamping and driving mechanism 10 is made of aluminum. On the one hand, the material weight is reduced, and the load on the displacement stage is alleviated; on the other hand, the aluminum material is relatively soft, allowing appropriate wear and material loss during the movement of the slide bar to ensure the smooth movement of the slide bar.
[0027] When the clearance of the blade 59 needs to be adjusted, the two sets of lifting platforms are controlled to start, and the lifting platforms drive the blade 59 to rise or fall through the blade mounting seat.
[0028] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A plane blade cascade test bench with adjustable incoming flow angle, comprising a heating device (1), characterized in that: A contraction section (2) is fixedly connected to one side of the heating device (1), and a connection piece is fixedly connected to a side of the contraction section (2) away from the heating device (1), wherein the connection piece comprises a flow channel bottom plate (7), a side plate, and a top plate; An inlet boundary layer leakage device (3) and an optical viewing window (4) are fixedly mounted on the top plate, a leaf saddle mounting platform attack angle adjustment mechanism (5) is arranged on the inner side of the flow channel bottom plate (7), and a slide bar (6) is slidably connected to the inner side of the flow channel bottom plate (7); The leaf stalk mounting platform attack angle adjustment mechanism (5) comprises a rotating orifice plate (51) and blades (59); the inner side of the flow channel bottom plate (7) is rotatably connected to the rotating orifice plate (51); the inner side of the rotating orifice plate (51) is provided with blades (59) that are evenly distributed; the blades (59) correspond to the connecting pieces; A displacement mechanism (8) is fixedly mounted on the blade mounting platform attack angle adjustment mechanism (5); a probe clamping and driving mechanism (10) is arranged on the upper side of the displacement mechanism (8); a five-hole probe (9) is fixedly mounted on the probe clamping and driving mechanism (10); the slide bar (6) corresponds to the five-hole probe (9); and a blade tip clearance adjustment mechanism (11) is fixedly connected to the lower side of the blade (59).
2. The plane blade cascade test bench with adjustable incoming flow angle of attack according to claim 1, characterized in that: Two groups of side plates are fixedly connected to the upper side of the flow channel bottom plate (7), and a top plate is fixedly connected to the upper sides of the two groups of side plates.
3. The plane blade cascade test bench with adjustable incoming flow angle of attack according to claim 1, characterized in that: The inlet boundary layer leakage device (3) comprises a suction hood, a mesh plate is arranged on the inner side of the suction hood, and a suction groove corresponding to the suction hood is opened on the top plate.
4. The plane blade cascade test bench with adjustable incoming flow angle of attack according to claim 2, characterized in that: The Ye Shan mounting platform attack angle adjustment mechanism (5) further comprises an adjustment stud (52), a locking stud (53), a positioning pin hole (54), an inlet turbulence grid (55), an inlet reset probe (56), an inlet boundary layer probe (57), and a fixed bottom plate (58); the lower side of the flow channel bottom plate (7) is fixedly connected to the fixed bottom plate (58) via three groups of adjustment studs (52); the upper side of the fixed bottom plate (58) is fixedly connected to the rotating orifice plate (51) via multiple groups of locking studs (53); two groups of positioning pin holes (54) are provided on the rotating orifice plate (51) and the flow channel bottom plate (7), and the two groups of positioning pin holes (54) correspond to each other; the inner sides of the flow channel bottom plate (7), the side plate, and the top plate are fixedly connected to the inlet turbulence grid (55); the inlet turbulence grid (55) corresponds to the contraction section (2).
5. The plane blade cascade test bench with adjustable incoming flow angle of attack according to claim 4, characterized in that: An inlet reset probe (56) and an inlet boundary layer probe (57) are fixedly mounted on the rotating orifice plate (51); the upper parts of the inlet reset probe (56) and the inlet boundary layer probe (57) are arranged inside a cavity formed by the flow channel bottom plate (7), the side plate and the top plate.
6. The plane blade cascade test bench with adjustable incoming flow angle of attack according to claim 4, characterized in that: The displacement mechanism (8) comprises a motor, a track plate, and a screw rod; the upper side of the fixed base plate (58) is fixedly connected to the track plate; the screw rod is rotatably connected between the two ends of the track plate; one end of the track plate is fixedly connected to the motor; and the output end of the motor is fixedly connected to one end of the screw rod.
7. The plane blade cascade test bench with adjustable incoming flow angle according to claim 6, characterized in that: The probe clamping and driving mechanism (10) comprises a probe driving block (101), a slide connecting block (102), a probe locking block (103), a probe mounting plate (104), and a probe slot (105); the probe driving block (101) is slidably connected to the upper side of the track plate; the probe driving block (101) is threadedly connected to the lead screw; the outer side of the probe driving block (101) is fixedly connected to the slide connecting block (102); the slide connecting block (102) is fixedly connected to the slide (6); the upper side of the probe driving block (101) is fixedly connected to the probe mounting plate (104); the probe locking block (103) is fixedly connected to the probe mounting plate (104); the probe locking block (103) is fixedly connected to the five-hole probe (9); and the rotating hole plate (51) is provided with a probe slot (105) corresponding to the five-hole probe (9).
8. The plane blade cascade test bench with adjustable incoming flow angle of attack according to claim 4, characterized in that: The blade tip clearance adjustment mechanism (11) comprises a blade mounting seat and a lifting platform, the upper side of the fixed base plate (58) is fixedly connected to two sets of lifting platforms, the upper side of the lifting platform is fixedly connected to the blade mounting seat, and the blade mounting seat is fixedly connected to the blade (59).
9. The plane blade cascade test bench with adjustable incoming flow angle of attack according to claim 1, characterized in that: The rotating orifice plate (51) and the flow channel bottom plate (7) are provided with sliding grooves corresponding to the sliding strips (6), and the flow channel bottom plate (7) is provided with a plurality of groups of sliding grooves, each group being distributed around the rotating orifice plate (51) at intervals of 5°.