Variable geometry turbine adjustable guide vane pneumatic torque measuring device and method

Abstract

The invention discloses a variable geometry turbine adjustable guide vane pneumatic torque measuring device and method, and belongs to the technical field of blade pneumatic torque measurement, the variable geometry turbine adjustable guide vane pneumatic torque measuring device comprises an arc-shaped mounting frame, a static torque sensor, a driving positioning mechanism and a plurality of adjustable guide vanes, and the adjustable guide vanes are rotatably connected to the arc-shaped mounting frame at equal intervals in the circumferential direction; the static torque sensor is installed on the adjustable guide vane, and the drive positioning mechanism is installed on the arc-shaped installation frame. According to the invention, the pneumatic torques of different rotation angles of the adjustable guide vane can be measured, the position of the adjustable guide vane is restrained through the arc-shaped mounting rack, and the adjustable guide vane is taken as a measurement object and rotates by taking the rotation shaft of the adjustable guide vane as the center, so that the throat area and the outlet airflow angle can be adjusted, and the flow of mainstream gas can be adjusted; the static torque sensor can be used for measuring the pneumatic torque borne by the adjustable guide vane in real time; the adjustable guide vane is rotationally adjusted and fixed through the driving and positioning mechanism, and the stability of the adjustable guide vane of the turbine is guaranteed.

Description

A device and method for measuring the aerodynamic torque of a variable geometry turbine guide vane. Technical Field

[0001] This invention belongs to the field of blade aerodynamic torque measurement technology, specifically relating to a device and method for measuring the aerodynamic torque of a variable geometry turbine adjustable guide vane. Background Technology

[0002] Variable geometry turbines are widely used in aero engines, automotive turbochargers, and gas turbines. By dynamically adjusting the guide vane angle, they optimize airflow characteristics (such as flow rate and angle of attack) under different operating conditions, thereby improving efficiency, reducing emissions, and expanding the operating range. The adjustment of the guide vane angle directly affects the aerodynamic performance of the turbine, but the dynamic airflow will generate complex aerodynamic loads on the guide vanes, forming aerodynamic torque.

[0003] Variable geometry turbines require real-time adjustment of the guide vane angle based on operating conditions, and the aerodynamic torque on the guide vanes directly affects the actuator load. If torque cannot be measured in real time, the control system cannot accurately compensate for airflow disturbances, potentially causing the guide vane angle to deviate from its optimal value, leading to decreased efficiency or the risk of surge / stall. Under transient operating conditions (acceleration and deceleration), aerodynamic loads fluctuate drastically; torque measurement data can provide feedback to the control algorithm, quickly adjusting the actuator output and preventing guide vane oscillation or response lag.

[0004] Furthermore, excessive pneumatic torque can lead to actuator motor overload, transmission mechanism wear, and even guide vane structural deformation. Real-time torque monitoring can trigger protection mechanisms (such as limiting the adjustment range or shutting down) to prevent hardware damage. Periodic fluctuations in pneumatic torque are a major cause of fatigue failure in guide vanes and drive mechanisms. By monitoring torque amplitude and spectrum characteristics over a long period, the remaining lifespan of components can be assessed, and preventative maintenance plans can be developed.

[0005] Therefore, adjustable guide vane aerodynamic torque measurement is not only a technical necessity for the efficient and safe operation of turbine systems, but also a core enabling means to realize intelligent power equipment. Its necessity runs through the entire life cycle of design, control, and maintenance, and directly affects the system's competitiveness and sustainable development capabilities. Summary of the Invention

[0006] The purpose of this invention is to provide a device and method for measuring the aerodynamic torque of a variable geometry turbine guide vane, so as to solve the problems existing in the prior art.

[0007] The objective of this invention is achieved through the following technical solution:

[0008] A variable geometry turbine adjustable guide vane aerodynamic torque measuring device includes: an arc-shaped mounting bracket;

[0009] Multiple adjustable guide vanes are rotatably connected to the arc-shaped mounting frame at equal intervals along the circumferential direction;

[0010] A static torque sensor is fixedly mounted on the adjustable guide vane, and the static torque sensor is used to measure the aerodynamic torque of the adjustable guide vane;

[0011] A drive positioning mechanism is mounted on the arc-shaped mounting bracket. The drive positioning mechanism is used to rotate and adjust the adjustable guide vane and fix the adjusted adjustable guide vane.

[0012] Furthermore, the arc-shaped mounting bracket includes two arc-shaped plates that are coaxially arranged, the adjustable guide vane is installed between the two arc-shaped plates, and the drive positioning mechanism is installed on the larger diameter arc-shaped plate.

[0013] Furthermore, both ends of the adjustable guide vane are fixedly connected to a rotating shaft, and both of the arc-shaped plates are provided with through holes for mounting the rotating shaft. The adjustable guide vane is rotatably connected to the arc-shaped plate through the rotating shaft, and the rotating shafts at both ends of the adjustable guide vane are coaxially arranged.

[0014] Furthermore, the static torque sensor is fixedly mounted on the rotating shaft at the top of the adjustable guide vane by bolts, and the drive positioning mechanism is in transmission cooperation with the adjustable guide vane through the static torque sensor.

[0015] Furthermore, the drive positioning mechanism includes a gear, which is fixedly connected to the static torque sensor. A rack is slidably connected to the upper limit of the arc plate, and the gear meshes with the rack. A positioning component is installed on the arc plate, which is used to position the rack.

[0016] Furthermore, the positioning component includes a motor, which is fixedly mounted on the arc-shaped plate. A second gear is fixedly connected to the output shaft of the motor. A second rack is slidably connected to the upper limit of the arc-shaped plate, and the second gear meshes with the second rack. A first rack is fixedly engaged with the second rack.

[0017] Furthermore, the first gear is a half gear.

[0018] Furthermore, a guide rail is fixedly provided on the arc-shaped plate, and a slider is slidably connected on the guide rail. Both rack one and rack two are fixedly connected to the slider.

[0019] Furthermore, a mounting plate is fixedly connected to the arc-shaped plate, and the motor is fixedly connected to the arc-shaped plate through the mounting plate.

[0020] Furthermore, there is no meshing clearance between the first gear and the first rack, and between the second gear and the second rack.

[0021] The beneficial effects of this invention are as follows:

[0022] This invention can measure the aerodynamic torque of adjustable guide vanes at different rotation angles. The position of the adjustable guide vane is constrained by an arc-shaped mounting bracket. The adjustable guide vane, as the measurement object, rotates around its own axis to adjust the throat area and outlet airflow angle, thereby regulating the flow rate of the main gas stream. A static torque sensor is used to measure the aerodynamic torque of the adjustable guide vane, allowing for real-time measurement of the aerodynamic torque acting on the guide vane. A drive positioning mechanism is used to rotate and fix the position of the adjustable guide vane, ensuring the stability of the turbine's adjustable guide vane. Attached Figure Description

[0023] Figure 1 is a schematic diagram of the structure of the present invention;

[0024] In the attached diagram: 1. Adjustable guide vane; 2. Static torque sensor; 3. Arc plate; 4. Rotating shaft; 5. Gear 1; 6. Rack 1; 7. Motor; 8. Gear 2; 9. Rack 2; 10. Guide rail; 11. Slider; 12. Mounting plate. Detailed Implementation

[0025] The present invention will now be further described with reference to the accompanying drawings.

[0026] The present invention provides a variable geometry turbine adjustable guide vane aerodynamic torque measuring device, as shown in Figure 1, including: an arc-shaped mounting frame, multiple adjustable guide vanes 1, a static torque sensor 2, and a drive positioning mechanism;

[0027] Multiple adjustable guide vanes 1 are rotatably connected to an arc-shaped mounting frame at equal intervals along the circumferential direction;

[0028] The static torque sensor 2 is fixedly installed on the adjustable guide vane 1. The static torque sensor 2 is used to measure the aerodynamic torque of the adjustable guide vane 1.

[0029] The drive positioning mechanism is mounted on the arc-shaped mounting bracket. The drive positioning mechanism is used to rotate and adjust the adjustable guide vane 1 and fix the adjusted adjustable guide vane 1.

[0030] In this embodiment, the aerodynamic torque of the adjustable guide vane 1 at different rotation angles can be measured. The position of the adjustable guide vane 1 is constrained by an arc-shaped mounting bracket. The adjustable guide vane 1, as the measurement object, rotates around its own axis 4 to adjust the throat area and outlet airflow angle, thereby regulating the flow rate of the mainstream gas. A static torque sensor 2 is used to measure the aerodynamic torque of the adjustable guide vane 1, allowing for real-time measurement of the aerodynamic torque acting on the adjustable guide vane 1. A drive positioning mechanism is used to rotate and fix the position of the adjustable guide vane 1, ensuring the stability of the turbine's adjustable guide vane 1.

[0031] In this embodiment, the arc-shaped mounting frame includes two coaxially arranged arc-shaped plates 3, and the adjustable guide vane 1 is installed between the two arc-shaped plates 3; the drive positioning mechanism is installed on the large-diameter arc-shaped plate 3.

[0032] Both ends of the adjustable guide vane 1 are fixedly connected to a rotating shaft 4. Both arc plates 3 are provided with through holes for installing the rotating shaft 4. The adjustable guide vane 1 is rotatably connected to the arc plate 3 through the rotating shaft 4. The rotating shafts 4 at both ends of the adjustable guide vane 1 are coaxially arranged.

[0033] The static torque sensor 2 is fixedly mounted on the rotating shaft 4 at the top of the adjustable guide vane 1 by bolts, and the drive positioning mechanism is driven by the static torque sensor 2 in conjunction with the adjustable guide vane 1.

[0034] The drive positioning mechanism includes a gear 5, which is fixedly connected to the static torque sensor 2. A rack 6 is slidably connected to the upper limit of the arc plate 3, and the gear 5 meshes with the rack 6. A positioning component is installed on the arc plate 3, which is used to position the rack 6.

[0035] When the adjustable guide vane 1 needs to be rotated, simply move rack 6, which drives gear 5 to achieve the rotational adjustment of the adjustable guide vane 1. After the adjustment is completed, use the positioning component to fix the position of rack 6 to keep the position of the adjustable guide vane 1 stable.

[0036] The positioning assembly includes a motor 7, which is fixedly mounted on the arc plate 3. A gear 8 is fixedly connected to the output shaft of the motor 7. A rack 9 is slidably connected to the upper limit of the arc plate 3. The gear 8 meshes with the rack 9. The rack 6 is fixedly engaged with the rack 9.

[0037] The design was further optimized, with Gear 15 being a half gear.

[0038] A guide rail 10 is fixedly installed on the arc plate 3, and a slider 11 is slidably connected to the guide rail 10. Rack 6 and rack 9 are both fixedly connected to the slider 11.

[0039] Further optimization of the scheme ensures that there is no meshing clearance between gear 5 and rack 6, and between gear 8 and rack 9.

[0040] An mounting plate 12 is fixedly connected to the arc-shaped plate 3, and the motor 7 is fixedly connected to the arc-shaped plate 3 through the mounting plate 12.

[0041] The variable geometry turbine adjustable guide vane aerodynamic torque measuring device provided by the present invention is used in which motor 7 drives gear 8 to rotate, gear 8 drives rack 9 to make slider 11 slide along guide rail 10. During the sliding process of slider 11, rack 6 moves together with slider 11. Under the action of rack 6, gear 5 rotates, thereby realizing the rotational adjustment of adjustable guide vane 1.

[0042] After the adjustable guide vane 1 is rotated and adjusted, the position of the adjustable guide vane 1 is locked by the meshing between gear 5 and rack 6, the meshing between gear 8 and rack 9, and the self-locking function of motor 7. When the incoming gas impacts the adjustable guide vane 1, it generates a pneumatic torque. The torque is measured by static torque sensor 2 and transmitted to the measurement system in real time.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A device for measuring the aerodynamic torque of a variable geometry turbine adjustable guide vane, characterized in that, include: Curved mounting bracket; Multiple adjustable guide vanes (1) are rotatably connected to the arc-shaped mounting frame at equal intervals along the circumferential direction; A static torque sensor (2) is fixedly installed on the adjustable guide vane (1) and is used to measure the aerodynamic torque of the adjustable guide vane (1); a drive positioning mechanism is installed on the arc-shaped mounting bracket and is used to rotate and adjust the adjustable guide vane (1) and fix the adjusted adjustable guide vane (1).

2. The aerodynamic torque measuring device for adjustable guide vanes of a variable geometry turbine according to claim 1, characterized in that, The arc-shaped mounting bracket includes two arc-shaped plates (3) which are coaxially arranged. The adjustable guide vane (1) is installed between the two arc-shaped plates (3), and the drive positioning mechanism is installed on the large-diameter arc-shaped plate (3).

3. The aerodynamic torque measuring device for adjustable guide vanes of a variable geometry turbine according to claim 1 or 2, characterized in that, The adjustable guide vane (1) is fixedly connected to a rotating shaft (4) at both ends. Both arc plates (3) are provided with through holes for installing the rotating shaft (4). The adjustable guide vane (1) is rotatably connected to the arc plate (3) through the rotating shaft (4). The rotating shaft (4) at both ends of the adjustable guide vane (1) is coaxially arranged.

4. The aerodynamic torque measuring device for adjustable guide vanes of a variable geometry turbine according to claim 3, characterized in that, The static torque sensor (2) is fixedly mounted on the rotating shaft (4) at the top of the adjustable guide vane (1) by bolts, and the drive positioning mechanism is in transmission cooperation with the adjustable guide vane (1) through the static torque sensor (2).

5. The aerodynamic torque measuring device for adjustable guide vanes of a variable geometry turbine according to claim 1 or 2, characterized in that, The drive positioning mechanism includes a gear (5), which is fixedly connected to the static torque sensor (2). The arc plate (3) is slidably connected to a rack (6), and the gear (5) meshes with the rack (6). A positioning component is installed on the arc plate (3), which is used to position the rack (6).

6. The aerodynamic torque measuring device for adjustable guide vanes of a variable geometry turbine according to claim 5, characterized in that, The positioning component includes a motor (7), which is fixedly mounted on the arc plate (3). A gear two (8) is fixedly connected to the output shaft of the motor (7). A rack two (9) is slidably connected to the upper limit of the arc plate (3). The gear two (8) meshes with the rack two (9). The rack one (6) is fixedly engaged with the rack two (9).

7. The aerodynamic torque measuring device for adjustable guide vanes of a variable geometry turbine according to claim 5, characterized in that, The gear one (5) is a half gear.

8. The aerodynamic torque measuring device for adjustable guide vanes of a variable geometry turbine according to claim 3, characterized in that, A guide rail (10) is fixedly installed on the arc plate (3), and a slider (11) is slidably connected on the guide rail (10). The first rack (6) and the second rack (9) are both fixedly connected to the slider (11).

9. The aerodynamic torque measuring device for adjustable guide vanes of a variable geometry turbine according to claim 8, characterized in that, An mounting plate (12) is fixedly connected to the arc plate (3), and the motor (7) is fixedly connected to the arc plate (3) through the mounting plate (12).

10. A method for measuring the aerodynamic torque of a variable geometry turbine adjustable guide vane, characterized in that, Using the device according to any one of claims 1-9, the following steps are included: a motor (7) drives a second gear (8) to rotate, the second gear (8) drives a second rack (9) to make a slider (11) slide along a guide rail (10). During the sliding process of the slider (11), a first rack (6) moves together with the slider (11). Under the action of the first rack (6), a first gear (5) rotates, thereby realizing the rotational adjustment of the adjustable guide vane (1). After the rotational adjustment of the adjustable guide vane (1) is completed, the position of the adjustable guide vane (1) is locked by the meshing between the first gear (5) and the first rack (6), the meshing between the second gear (8) and the second rack (9), and the self-locking function of the motor (7). When the incoming gas impacts the adjustable guide vane (1), a pneumatic torque is generated. The torque is measured by a static torque sensor (2) and transmitted to the measurement system in real time.

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