A rotating vane outlet flow field temperature and pressure measurement device

Abstract

The application discloses a kind of rotating blade outlet flow field temperature and pressure measuring device, the output shaft of angle driver is connected with sensitive probe rod, and the lower end of sensitive probe rod has pressure sensing part and temperature sensing part, and the angle driver rotation can change the angle of attack of pressure sensing part and temperature sensing part.Before testing, according to the test test requirements, the positive rotation or reverse rotation and rotation angle of angle driver are calibrated, and the angle is determined by the center scale line of inner indicator disc and the scale of outer scale disc.If the measuring device is used to test larger (or smaller) cross-section temperature and pressure, manually rotate the inner threaded turntable, and the threaded slide bar will move up and down as the inner threaded turntable rotates, and the length of movement is read by the center scale line of the scale fixed on the threaded slide bar.The temperature and pressure sensing part is spaced distribution, i.e., the upper or lower surface of temperature sensing part is pressure sensing part.

Description

Technical Field

[0001] This invention belongs to the field of measuring physical parameters of flow field in turbomachinery, and relates to a flow field temperature and pressure measuring device, particularly a device for measuring the flow field temperature and pressure at the rear outlet of a rotating blade. Background Technology

[0002] For some rotating blades, pressure and temperature measurements are required behind them for performance calculations. In test specimens with single-stage or multi-stage rotating blade structures, if there are no guide vanes behind the rotating blades, the compressed air will be expelled in a spiral shape. Using fixed-position total pressure and temperature sensors (i.e., sensors with the sensing part parallel to the rotating blade axis) is structurally limited, making it impossible to measure the total pressure and temperature of the rotating airflow in real time based on the test specimen's operating point (blade speed). Furthermore, if the rotating blade test specimen is replaced, the measured temperature and pressure will not be at the center of the flow cross-section at the rotating blade outlet, requiring sensor replacement for testing. Summary of the Invention

[0003] (I) Technical Issues

[0004] To address the aforementioned deficiencies and shortcomings of existing technologies, this invention provides a device for measuring the temperature and pressure of the flow field at the outlet of a rotating blade. When measuring flow field parameters behind the rotating blade, this device can adjust the angle of its sensing probe according to the rotation direction of the airflow under different operating conditions. This ensures that the measured values ​​consistently reflect the total temperature and total pressure of the airflow at the windward side, thus meeting both the requirements of fixed-position sensors and the needs of airflow variations behind the rotating blade at different operating points, thereby more accurately reflecting the true pressure and temperature of the flow field. Furthermore, to expand the device's applicability, the sensing probe features a height-adjustable design. The longitudinal position of the sensing probe at the measuring section of the rotating blade can be adjusted according to experimental needs, maximizing its applicability to other test specimens and meeting the testing requirements of different rotating blade specimens, thus enhancing the device's versatility.

[0005] (II) Technical Solution

[0006] To solve its technical problem, the present invention adopts the following technical solution:

[0007] A device for measuring temperature and pressure at the outlet flow field of a rotating blade, comprising at least a mounting base, an outer sleeve, a threaded slide bar, an internally threaded turntable, a sensing probe, and an angle adjustment mechanism, characterized in that...

[0008] The mounting base is a plate-shaped component, which is detachably fixed to the outlet casing of the rotating blade specimen under test by fasteners. A central through hole is provided at the center of the plate-shaped component.

[0009] The outer sleeve is a cylindrical component with openings at both ends. The top of the cylindrical component has a flange edge. The bottom of the cylindrical component is fixedly mounted on the mounting base in a way that is concentric with and sealed to the central through hole of the mounting base. The cylindrical outer wall of the cylindrical component has a guide groove extending along the height direction, and at least one side of the guide groove has a height scale.

[0010] The threaded slide bar is a hollow threaded component with open ends. The main body of the threaded component is installed inside the outer sleeve in a manner that does not interfere with the inner wall of the outer sleeve, is coaxial, and can be raised and lowered. The top of the threaded component is provided with a flange mounting plate. The cylindrical outer wall of the threaded component is provided with external threads, and a guide indicator block is fixedly installed on the cylindrical outer wall of the threaded component. The guide indicator block is slidably engaged in the guide groove of the outer sleeve, and the guide indicator block is provided with a height pointer mark. The height pointer mark is adapted to the height scale of the guide groove to indicate the height position of the guide indicator block in the guide groove, and thus indicate the height position of the threaded slide bar.

[0011] The internal thread turntable is a disc-shaped component with an internal thread through hole. The disc-shaped component is rotatably mounted on the flange edge at the top of the outer sleeve. The internal thread of the disc-shaped component is adapted to the external thread of the threaded slide rod. The disc-shaped component is sleeved on the cylindrical outer wall of the threaded slide rod with external threads through its internal thread through hole. When the internal thread turntable rotates, under the mutual meshing of the internal and external threads and the constraint of the guide groove on the guide indicator block, the threaded slide rod can move up and down along its axis. The position of the threaded slide rod is indicated by the position of the guide indicator block in the guide groove.

[0012] The sensing probe is an elongated rod-shaped component. This rod-shaped component is disposed within the threaded slide rod in a manner that allows for rotational movement without interference with the inner wall of the threaded slide rod. The top end of the sensing probe extends upward beyond the threaded slide rod, and the end of the sensing probe passes through an opening plug located in the central through-hole of the mounting base and extends downward into the outlet casing of the rotating blade specimen under test. The opening plug provides rotational support for the sensing probe and prevents gas leakage from the outlet casing of the rotating blade specimen under test into the outer sleeve. One or more pressure-sensing and temperature-sensing parts are provided on the side wall of the sensing probe extending into the outlet casing of the rotating blade specimen under test.

[0013] The angle adjustment mechanism includes an outer scale, an inner indicator, and an angle actuator. The outer scale is concentrically fixed to a flange mounting plate at the top of the threaded slide rod, and has a central positioning through-hole with angle markings along its edge. The inner indicator has a central through-hole and is concentrically fixed to the sensing probe through it. The outer diameter of the inner indicator matches the diameter of the central positioning through-hole of the outer scale, allowing the inner indicator to be rotatably positioned without interference. The inner indicator is positioned in the center of the outer dial and has an angle pointer line at the radial outer edge of its top surface. The angle pointer line is adapted to the angle mark on the outer dial to indicate the circumferential angle position of the inner indicator and, consequently, the circumferential angle position of the sensing probe. The output shaft of the angle driver is fixedly mounted on the top of the sensing probe and is fixedly mounted on the outer dial via a bracket. Under the action of the angle driver, the sensing probe can rotate, thereby causing the inner indicator to rotate accordingly.

[0014] Preferably, the mounting base is provided with mounting holes, and the plate-shaped component is detachably fixed to the outlet casing of the rotating blade specimen under test by means of the mounting holes thereon and fasteners.

[0015] Preferably, the bottom surface of the internal thread turntable is provided with a circular countersunk step surface surrounding its internal thread through hole. The inner diameter of the circular countersunk step surface is larger than the outer diameter of the flange edge at the top of the outer sleeve. A ring is fastened to the bottom surface of the internal thread turntable. The space between the ring and the circular countersunk step surface is used to clamp the flange edge at the top of the outer sleeve, so that the internal thread turntable can be rotatably mounted on the flange edge at the top of the outer sleeve.

[0016] Preferably, the pressure sensing part and the temperature sensing part at the end of the sensing probe are both tubular components vertically arranged on their side walls. The tubular component of the temperature sensing part is provided with a temperature sensor, and the side wall of the tubular component of the temperature sensing part is provided with a through hole for gas flow.

[0017] Furthermore, the sensing probe is provided with a pressure-measuring air duct extending along its length, and the end of the pressure-measuring air duct is connected to the tubular component of the corresponding pressure sensing part.

[0018] Preferably, the sensing probe is provided with a temperature lead channel extending along its length, the temperature lead channel is provided with a temperature lead, and the end of the temperature lead is connected to a temperature sensor in the corresponding temperature sensing part.

[0019] Preferably, the space between the temperature lead and the temperature lead channel is filled with high-temperature resistant insulating silicone material.

[0020] Preferably, the angle driver is a stepper motor.

[0021] Preferably, the opening plug is fixedly disposed in the central through hole of the mounting base by its external thread.

[0022] The rotating blade outlet flow field temperature and pressure measuring device of the present invention preferably uses a 48V miniature stepper motor as an angle driver to drive the sensing probe to rotate via a drive shaft. The rotation angle is set according to the motor control system, and can achieve a rotation angle of ±90°. The top of the sensing probe has an inner indicator disk, and the center line of the inner indicator disk scale corresponds to the scale line on the outer scale disk, which is used to establish the rotation angle scale value.

[0023] As needed for testing, manually adjust the vertical movement of the internal threaded disc on the threaded slide bar to change the longitudinal position of the sensing probe on the test section. The extension amount of the sensing probe is read by aligning the center line of the scale on the threaded slide bar with the scale line on the outer sleeve.

[0024] (III) Technical Effects

[0025] Compared with the prior art, the rotating blade outlet flow field temperature and pressure measuring device of the present invention has significant technical advantages: When applied to rotating blade performance testing, the rotating blade outlet flow field temperature and pressure measuring device of the present invention can test the flow field without guide vanes and where the airflow direction changes with the operating point. It adopts an integrated design for temperature and pressure measurement, minimizing the number of sensors used and avoiding the effect of sensors clogging the rotating blade outlet and disturbing the flow field. The adjustable design of the test area range and direction expands the application range of the testing device and reduces the cost of using sensors for the tester. Attached Figure Description

[0026] Figure 1 This is an isometric view of the rotating blade outlet flow field temperature and pressure measuring device of the present invention.

[0027] Figure 2 This is a front view of the rotating blade outlet flow field temperature and pressure measuring device of the present invention.

[0028] Figure 3 This is a cross-sectional view of the rotating blade outlet flow field temperature and pressure measuring device of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] Mounting base 1, outer sleeve 2, flange edge 21, guide groove 22, height scale 23, threaded slide bar 3, flange mounting plate 31, guide indicator block 32, internal threaded turntable 4, sensing probe 5, pressure sensing part 51, temperature sensing part 52, pressure measuring air duct 53, temperature lead wire 54, angle adjustment mechanism 6, outer scale 61, inner indicator plate 62, angle actuator 63, bracket 64, opening plug 7, ring 8. Detailed Implementation

[0031] To better understand the present invention, the following embodiments further illustrate the content of the invention, so that the advantages and features of the invention can be more easily understood by those skilled in the art. It should be noted that the following descriptions are merely preferred embodiments of the present invention, but the content of the invention is not limited to the following embodiments. In fact, various modifications and variations can be made to the present invention without departing from the scope or spirit of the invention, which will be apparent to those skilled in the art. For example, features shown or described as part of one embodiment can be used with another embodiment to produce yet another embodiment. Therefore, it is intended that such modifications and variations be included within the scope of the appended claims and their equivalents.

[0032] like Figure 1-3 As shown, the rotating blade outlet flow field temperature and pressure measuring device of the present invention includes at least a mounting base 1, an outer sleeve 2, a threaded slide bar 3, an internal threaded turntable 4, a sensing probe 5, and an angle adjustment mechanism 6.

[0033] The mounting base 1 is a plate-shaped component. The plate-shaped component is detachably fixed to the outlet casing of the rotating blade specimen under test by fasteners. A central through hole is provided at the center of the plate-shaped component. The mounting base 1 is provided with mounting holes, and the plate-shaped component is detachably fixed to the outlet casing of the rotating blade specimen under test by fasteners through the mounting holes.

[0034] The outer sleeve 2 is a cylindrical component with open ends. The top of the cylindrical component is provided with a flange edge 21. The bottom of the cylindrical component is fixedly mounted on the mounting base 1 in a concentric and sealed manner with the central through hole of the mounting base 1. The cylindrical outer wall of the cylindrical component is provided with a guide groove 22 extending in the height direction, and at least one side of the guide groove 22 is provided with a height scale 23.

[0035] The threaded slide bar 3 is a hollow threaded component with open ends. The main body of the threaded component is set inside the outer sleeve 2 in a manner that does not interfere with the inner wall of the outer sleeve 2, is coaxial, and can be raised and lowered. The top of the threaded component is provided with a flange mounting plate 31. The cylindrical outer wall of the threaded component is provided with external threads, and a guide indicator block 32 is fixedly installed on the cylindrical outer wall of the threaded component. The guide indicator block 32 is engaged in the guide groove 22 of the outer sleeve 2 in a manner that can slide up and down. The guide indicator block 32 is provided with a height pointer mark, which is adapted to the height scale of the guide groove 22 to indicate the height position of the guide indicator block 32 in the guide groove 22, and thus indicate the height position of the threaded slide bar 3.

[0036] The internal thread turntable 4 is a disc-shaped component with an internal thread through hole. The disc-shaped component is rotatably mounted on the flange edge 21 at the top of the outer sleeve 2. The internal thread of the disc-shaped component is compatible with the external thread of the threaded slide bar 3. The disc-shaped component is sleeved on the cylindrical outer wall of the threaded slide bar 3 with external threads through its internal thread through hole. When the internal thread turntable 4 rotates, the threaded slide bar 3 can move up and down along its axis under the mutual meshing of the internal and external threads and the constraint of the guide groove 22 on the guide indicator block 32. The position of the threaded slide bar 3 is marked by the position of the guide indicator block 32 in the guide groove 22. The bottom surface of the internal thread turntable 4 is provided with a circular countersunk step surface surrounding its internal thread through hole. The inner diameter of the circular countersunk step surface is larger than the outer diameter of the flange edge 21 at the top of the outer sleeve 2. A ring 8 is fastened to the bottom surface of the internal thread turntable 4. The space between the ring 8 and the circular countersunk step surface is used to clamp the flange edge 21 at the top of the outer sleeve 2, so that the internal thread turntable 4 can be rotatably mounted on the flange edge 21 at the top of the outer sleeve 2.

[0037] The sensing probe 5 is a slender rod-shaped component. The rod-shaped component is set inside the threaded slide bar 3 in a manner that does not interfere with the inner wall of the threaded slide bar 3, is coaxial, and can rotate relative to it. The top end of the sensing probe 5 extends upward beyond the threaded slide bar 3, and the end of the sensing probe 5 passes through an opening plug 7 set in the central through hole of the mounting base 1 and extends downward into the outlet casing of the rotating blade specimen to be tested. The opening plug 7 is used to provide rotational support for the sensing probe 5 and to prevent gas in the outlet casing of the rotating blade specimen to be tested from leaking into the outer sleeve 2. One or more pressure sensing parts 51 and temperature sensing parts 52 are provided on the side wall of the rod body that extends into the outlet casing of the rotating blade specimen to be tested. Both the pressure sensing part 51 and the temperature sensing part 52 at the end of the sensing probe 5 are tubular components vertically mounted on their side walls. A temperature sensor is installed inside the tubular component of the temperature sensing part 52, and a through hole for gas flow is provided on the side wall of the tubular component of the temperature sensing part 52. The sensing probe 5 has a pressure-measuring gas duct 53 extending along its length, and the end of the pressure-measuring gas duct 53 is connected to the corresponding tubular component of the pressure sensing part 51. The sensing probe 5 also has a temperature lead wire channel extending along its length, containing a temperature lead wire 54. The end of the temperature lead wire is connected to the temperature sensor in the corresponding temperature sensing part 52. The space between the temperature lead wire and the temperature lead wire channel is filled with high-temperature resistant insulating silicone material.

[0038] The angle adjustment mechanism 6 includes an outer dial 61, an inner indicator dial 62, and an angle driver 63. The outer dial 61 has a central positioning through-hole with angle markings on its edge, and is concentrically fixed to the flange mounting plate at the top of the threaded slide rod 3. The inner indicator dial 62 has a central through-hole and is concentrically fixed to the sensing probe 5 through it. The outer diameter of the inner indicator dial 62 matches the diameter of the central positioning through-hole of the outer dial 61, allowing the inner indicator dial 62 to rotate without interference. The inner indicator 62 is positioned within the central positioning through hole of the outer dial 61, and an angle pointer scale is provided at the radial outer edge of the top surface of the inner indicator 62. The angle pointer scale matches the angle mark on the outer dial 61 to indicate the circumferential angle position of the inner indicator 62, and thus the circumferential angle position of the sensing probe 5. The output shaft of the angle driver 63 is fixedly mounted on the top of the sensing probe 5, and the angle driver 63 is fixedly mounted on the outer dial via a bracket 64. Under the action of the angle driver 63, the sensing probe 5 can rotate, thereby driving the inner indicator 62 to rotate accordingly. The angle driver 63 is preferably a stepper motor.

[0039] In the rotating blade outlet flow field temperature and pressure measuring device of the present invention, the pressure sensing part 51 and the temperature sensing part 52 are located at the bottom of the device and are arranged in the flow field of the test section. The pressure measuring air passage 53 for measuring the total pressure and the temperature lead 54 for measuring the temperature pass through the sensing rod 5, with ports leading out at the top of the rod. The temperature sensor (set in the tubular component of the temperature sensing part 52) ​​utilizes the characteristic that the resistance of platinum metal changes approximately proportionally with temperature. The temperature sensor uses a platinum resistance thermometer with a Pt100 graduation as the temperature sensing element. When the ambient temperature changes, the temperature sensing element senses the temperature change and its resistance changes. By detecting the resistance value of the platinum resistance thermometer, the temperature of the environment where the temperature sensing element is located can be determined. The insulation resistance between each wire and the housing, and between the two wires of each group of platinum resistance thermometers, is measured to be no less than 100MΩ using a 100DC megohmmeter. To achieve good insulation, the space between the platinum resistance thermometer and the temperature lead channel in the sensing probe 5 is filled with high-temperature resistant insulating silicone material.

[0040] The sensing probe 5 passes through the inner indicator disc 62, threaded slide bar 3, internal threaded turntable 4, outer sleeve 2, mounting base 1, and opening plug 7 from top to bottom, and is integrally connected to the sensing part. The angle driver 63 is preferably a miniature stepper motor, which is set at the upper end of the sensing probe 5. The angle driver 63 is fixed to the outer scale 61 on both sides by brackets 64. The output shaft of the angle driver 63 is connected to the sensing probe 5. When the angle driver 63 rotates, it directly drives the sensing probe 5 to rotate, which in turn drives the pressure sensing part 51 and temperature sensing part 52 on the sensing probe 5 to rotate accordingly.

[0041] The inner indicator 62 is mounted on the upper end of the sensing probe 5 and the lower end of the angle actuator 63, forming a single unit. Rotation of the angle actuator 63 causes simultaneous rotation of the sensing probe 5 and the inner indicator 62, with the inner indicator 62 and the outer scale 61 on the same plane. The outer scale 61 is riveted to the flange mounting plate 31 at the top of the threaded slide bar 3 and does not rotate with the angle actuator 63 or the sensing probe 5. The threaded slide bar 3, serving as the outer shell of the sensing probe 5, has a guide indicator block 32 riveted to it for reading the elongation of the sensing probe 5. The outer sleeve 2 is located outside the threaded slide bar 3, connected by an inner threaded turntable 4 and a ring 8. The inner threaded turntable 4 is riveted to the ring 8, clamping the flange edge 21 of the outer sleeve 2 between them. When the inner threaded turntable 4 rotates, the ring 8 rotates accordingly, and the force of this up-and-down movement is transmitted through the threaded slide bar 3, causing it to move up and down. The outer sleeve 2 has a guide groove 22 on its side. The guide indicator block 32 for riveting the threaded slide rod 3 is located in the guide groove 22. The amount of vertical movement of the threaded slide rod 3 is read by the guide indicator block 32 corresponding to the scale line of the outer sleeve 2.

[0042] The mounting base 1 is fixed to the bottom of the outer sleeve 2 by a threaded connection. The outer sleeve 2 and the sensing probe 5 are sealed and connected by a threaded plug 7. The mounting base 1 has circular screw holes at both ends for screws to pass through and fix the measuring device to the test piece housing.

[0043] The rotating blade outlet flow field temperature and pressure measuring device of the present invention is mainly used for measuring the temperature and pressure of gas compressed by the rotating blade. Before the test, the measuring device is first inserted into the outlet casing of the rotating blade specimen to be tested, with the sensing parts (i.e., pressure sensing part 51 and temperature sensing part 52) ​​on the sensing probe 5 facing the flow field outlet direction. According to the radial depth of the flow section, the position of the sensing part of the sensor is adjusted by the internal threaded turntable 4, and the depth reading is read from the scale on the side. Then, using screws, the measuring device is tightened and fixed to the test specimen casing through the screw holes of the base.

[0044] Before the test, the correspondence between the sensor rotation angle and the required angle is calibrated. First, after the angle driver 63 (preferably a micro stepper motor) is powered on, the motor control program is set according to the airflow rotation angle at the working point of the test piece. The remote manual control button or switch is used to adjust the sensor rotation angle and test time at a certain working point through the motor control program. After determining that the sensor rotation angle and test waiting time meet the requirements of the airflow rotation direction and steady-state test time at the working point of the test piece, the pressure measuring air duct port on the measuring device is connected to the equipment test pipeline, and the temperature measuring lead is connected to the equipment test lead to complete the preparation work for pressure and temperature testing.

[0045] The test begins by starting the test piece, causing the rotating blades of the test piece to rotate and generate compressed air:

[0046] The first operating point, the initial position of the testing device, completes the pressure and temperature tests;

[0047] At the second operating point, according to the calibrated scale position, the remote manual control switch controls the micro stepper motor to rotate. The rotation of the motor drives the sensing probe 5 to rotate, so that the sensing part on the measuring section rotates to face the direction of the compressed gas flow. After stabilizing for 30 seconds, the pressure and temperature tests are completed.

[0048] The third operating point is tested using the same method as the second, and so on, until all operating points are tested.

[0049] After all the tests under all operating conditions are completed, the test piece stops rotating. The motor is then rotated to its initial position by remote manual control, that is, the 0-degree scale line of the inner indicator 62 corresponds to the 0-degree scale line of the outer scale 61. The measuring device is then removed, and the test piece is restored to its initial state before the test.

[0050] The objectives of this invention have been fully and effectively achieved through the above embodiments. All equivalent or simple variations made to the structure, features, and principles of this invention are included within the scope of protection of this patent. Those skilled in the art can make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of this invention or exceed the scope defined in these claims, all of which should fall within the scope of protection of this invention.

Claims

1. A device for measuring temperature and pressure at the outlet flow field of a rotating blade, comprising at least a mounting base, an outer sleeve, a threaded slide bar, an internally threaded turntable, a sensing probe, and an angle adjustment mechanism, characterized in that, The mounting base is a plate-shaped component, which is detachably fixed to the outlet casing of the rotating blade specimen under test by fasteners. A central through hole is provided at the center of the plate-shaped component. The outer sleeve is a cylindrical component with openings at both ends. The top of the cylindrical component has a flange edge. The bottom of the cylindrical component is fixedly mounted on the mounting base in a way that is concentric with and sealed to the central through hole of the mounting base. The cylindrical outer wall of the cylindrical component has a guide groove extending along the height direction, and at least one side of the guide groove has a height scale. The threaded slide bar is a hollow threaded component with open ends. The main body of the threaded component is installed inside the outer sleeve in a manner that does not interfere with the inner wall of the outer sleeve, is coaxial, and can be raised and lowered. The top of the threaded component is provided with a flange mounting plate. The cylindrical outer wall of the threaded component is provided with external threads, and a guide indicator block is fixedly installed on the cylindrical outer wall of the threaded component. The guide indicator block is slidably engaged in the guide groove of the outer sleeve, and the guide indicator block is provided with a height pointer mark. The height pointer mark is adapted to the height scale of the guide groove to indicate the height position of the guide indicator block in the guide groove, and thus indicate the height position of the threaded slide bar. The internal thread turntable is a disc-shaped component with an internal thread through hole. The disc-shaped component is rotatably mounted on the flange edge at the top of the outer sleeve. The internal thread of the disc-shaped component is adapted to the external thread of the threaded slide rod. The disc-shaped component is sleeved on the cylindrical outer wall of the threaded slide rod with external threads through its internal thread through hole. When the internal thread turntable rotates, under the mutual meshing of the internal and external threads and the constraint of the guide groove on the guide indicator block, the threaded slide rod can move up and down along its axis. The position of the threaded slide rod is indicated by the position of the guide indicator block in the guide groove. The sensing probe is an elongated rod-shaped component. This rod-shaped component is disposed within the threaded slide rod in a manner that allows for rotational movement without interference with the inner wall of the threaded slide rod. The top end of the sensing probe extends upward beyond the threaded slide rod, and the end of the sensing probe passes through an opening plug located in the central through-hole of the mounting base and extends downward into the outlet casing of the rotating blade specimen under test. The opening plug provides rotational support for the sensing probe and prevents gas leakage from the outlet casing of the rotating blade specimen under test into the outer sleeve. One or more pressure-sensing and temperature-sensing parts are provided on the side wall of the sensing probe extending into the outlet casing of the rotating blade specimen under test. The angle adjustment mechanism includes an outer scale, an inner indicator, and an angle actuator. The outer scale is concentrically fixed to a flange mounting plate at the top of the threaded slide rod, and has a central positioning through-hole with angle markings along its edge. The inner indicator has a central through-hole and is concentrically fixed to the sensing probe through it. The outer diameter of the inner indicator matches the diameter of the central positioning through-hole of the outer scale, allowing the inner indicator to be rotatably positioned without interference. The inner indicator is positioned in the center of the outer dial and has an angle pointer line at the radial outer edge of its top surface. The angle pointer line is adapted to the angle mark on the outer dial to indicate the circumferential angle position of the inner indicator and, consequently, the circumferential angle position of the sensing probe. The output shaft of the angle driver is fixedly mounted on the top of the sensing probe and is fixedly mounted on the outer dial via a bracket. Under the action of the angle driver, the sensing probe can rotate, thereby causing the inner indicator to rotate accordingly.

2. The rotating blade outlet flow field temperature and pressure measuring device according to claim 1, characterized in that, The mounting base is provided with mounting holes, and the plate-shaped component is detachably fixed to the outlet casing of the rotating blade specimen under test by means of the mounting holes and fasteners.

3. The rotating blade outlet flow field temperature and pressure measuring device according to claim 1, characterized in that, The bottom surface of the internal thread turntable is provided with a circular countersunk step surface surrounding its internal thread through hole. The inner diameter of the circular countersunk step surface is larger than the outer diameter of the flange edge at the top of the outer sleeve. A ring is fastened to the bottom surface of the internal thread turntable. The space between the ring and the circular countersunk step surface is used to clamp the flange edge at the top of the outer sleeve, so that the internal thread turntable can be rotatably mounted on the flange edge at the top of the outer sleeve.

4. The rotating blade outlet flow field temperature and pressure measuring device according to claim 1, characterized in that, The pressure sensing part and temperature sensing part at the end of the sensing probe are both tubular components vertically arranged on their side walls. The temperature sensing part is equipped with a temperature sensor inside the tubular component, and the side wall of the temperature sensing part is provided with a through hole for gas flow.

5. The rotating vane exit flow field temperature and pressure measurement apparatus of claim 4, wherein, The sensing probe is provided with a pressure-measuring air duct extending along its length, and the end of the pressure-measuring air duct is connected to the tubular component of the corresponding pressure sensing part.

6. The rotating blade outlet flow field temperature and pressure measuring device according to claim 4, characterized in that, The sensing probe is provided with a temperature lead channel extending along its length, and a temperature lead is provided in the temperature lead channel. The end of the temperature lead is connected to a temperature sensor in the corresponding temperature sensing part.

7. The rotating vane exit flow field temperature and pressure measurement apparatus of claim 6 wherein, The temperature lead and the temperature lead channel are filled with high-temperature resistant insulating silicone material.

8. The rotating blade outlet flow field temperature and pressure measuring device according to claim 1, characterized in that, The angle driver is a stepper motor.

9. The rotating blade outlet flow field temperature and pressure measuring device according to claim 1, characterized in that, The opening plug is fixedly installed in the central through hole of the mounting base by its external thread.

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