VNT angle sensing system

Abstract

The utility model discloses a VNT angle sensing system, which comprises an actuating mechanism, a connecting rod mechanism and a turbine mechanism, a motor actuator is arranged on the actuating mechanism, the output end of the motor actuator is connected with the connecting rod mechanism, and the motor actuator is connected with the turbine mechanism through the connecting rod mechanism. The turbine mechanism comprises a driving rod, a shifting block, a movable disc, a fixed disc and movable blades, the connecting rod mechanism is connected with one end of the driving rod and drives the driving rod to rotate, the other end of the driving rod is connected with the shifting block and drives the shifting block to rotate, the shifting block is connected with the movable disc, the movable disc is connected with a rotating block, and the rotating block is connected with the movable blades. The movable blades are rotationally connected to the fixed disc, and rotating shafts of the movable blades are connected with angle sensors. According to the utility model, the rotation angle of the movable blade can be accurately detected and fed back, the feedback precision is improved, and the fed-back angle value is consistent with the actual rotation angle value of the movable blade.

Description

Technical Field

[0001] This utility model belongs to the field of turbine equipment, and specifically relates to a VNT angle sensing system. Background Technology

[0002] VNT stands for Variable Nozzle Intensifier. The blade angle of the VNT variable section disc is determined by a motor actuator. The motor actuator is connected to the movable blades on the turbine mechanism via a connecting rod and drives the movable blades to rotate, thereby changing the blade angle and adjusting the intake area of ​​the turbine mechanism. Currently, an angle sensor is installed on the motor actuator to detect the rotation angle of the movable blades in the turbine mechanism. However, in actual use, due to different intake volumes and pressures, the position of the movable blades at the air compressor turbine end is inconsistent with the torque transmitted to the motor actuator, resulting in inconsistent feedback of the movable blade angle, i.e., inconsistent blade opening. Inaccurate feedback of the blade opening often leads to poor steady-state control accuracy and poor repeatability in actual use. Therefore, in order to avoid the shortcomings of the existing technology, it is necessary to improve the existing technology. Utility Model Content

[0003] The purpose of this invention is to provide a VNT angle sensing system that can accurately detect and provide feedback on the rotation angle of the moving blade, improve feedback accuracy, and ensure that the feedback angle value is consistent with the actual rotation angle value of the moving blade.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A VNT angle sensing system includes an actuator, a linkage mechanism, and a turbine mechanism. The actuator is equipped with a motor actuator, the output of which is connected to the linkage mechanism. The motor actuator is connected to the turbine mechanism via the linkage mechanism. The turbine mechanism includes a drive rod, a toggle block, a movable disk, a fixed disk, and movable blades. The linkage mechanism is fixedly connected to one end of the drive rod and drives the drive rod to rotate. The other end of the drive rod is fixedly connected to the toggle block and drives the toggle block to rotate. The toggle block is connected to the movable disk and can toggle the movable disk to rotate around its own axis. The movable blades are rotatably connected to the fixed disk. A rotating block connects the rotating shafts of the movable disk and the movable blades. An angle sensor is connected to the rotating shaft of the movable blades.

[0006] As a preferred embodiment of the above-mentioned VNT angle sensing system, the rotating block includes a horizontal block and a vertical block. One end of the horizontal block is connected to the rotating shaft of the movable blade, and the other end of the horizontal block is connected to the vertical block. A first positioning groove is provided on the movable disk, and the vertical block is accommodated in the first positioning groove.

[0007] As a preferred embodiment of the above-mentioned VNT angle sensing system, it further includes a vortex housing, the turbine mechanism being disposed inside the vortex housing, the angle sensor being mounted on the vortex housing, and the movable end of the angle sensor being fixedly connected to the rotating shaft of the movable blade.

[0008] As a preferred embodiment of the aforementioned VNT angle sensing system, the movable end of the angle sensor is welded to the rotating shaft of the movable blade.

[0009] As a preferred embodiment of the aforementioned VNT angle sensing system, the toggle block is provided with a second positioning groove, and the movable disc is provided with a positioning post, the positioning post being accommodated in the second positioning groove.

[0010] As a preferred embodiment of the aforementioned VNT angle sensing system, the linkage mechanism includes a first link, a second link, and a third link. The output end of the motor actuator is fixedly connected to one end of the first link, the other end of the first link is rotatably connected to one end of the second link, the other end of the second link is rotatably connected to one end of the third link, and the other end of the third link is fixedly connected to the drive rod.

[0011] The VNT angle sensing system provided by this utility model has the following advantages compared with the prior art:

[0012] The actuator of this utility model uses a motor actuator to drive a turbine mechanism through a linkage mechanism. The linkage mechanism drives the drive rod of the turbine mechanism to rotate, which in turn drives a toggle block to rotate, thereby actuating a movable disc. The movable disc is connected to a movable blade via a rotating block. When the movable disc rotates in one direction, the rotating block drives the movable blade to rotate, opening the blade. When the movable disc rotates in the other direction, the movable blade closes. The rotation direction of the drive rod is adjusted by the forward and reverse rotation of the motor actuator, thereby adjusting the rotation direction of the movable disc and controlling the opening and closing of the movable blade. An angle sensor is connected to the shaft of the movable blade, allowing the sensor to detect the actual rotation angle of the blade. This avoids the problem of inconsistent feedback opening caused by inconsistent torque transmitted from the movable blade to the actuator. By directly connecting the angle sensor to the shaft of the movable blade, the feedback angle value is kept consistent with the actual rotation angle value of the blade, improving feedback accuracy. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0014] Figure 1 This is a schematic diagram of the internal structure of the VNT angle sensing system of this utility model;

[0015] Figure 2 This is an external schematic diagram of the VNT angle sensing system of this utility model;

[0016] Figure 3 This is a schematic diagram of the turbine mechanism of this utility model;

[0017] Figure 4 This is a schematic diagram of the internal structure of the turbine mechanism of this utility model.

[0018] Marked in the image:

[0019] 100. Actuator; 110. Motor actuator; 200. Linkage mechanism; 210. First link; 220. Second link; 230. Third link; 300. Turbine mechanism; 310. Drive rod; 320. Actuating block; 321. Second positioning groove; 330. Movable disc; 331. Positioning column; 332. First positioning groove; 340. Rotating block; 341. Horizontal block; 342. Vertical block; 350. Fixed disc; 360. Movable blade; 400. Vortex housing; 500. Angle sensor. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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 utility model.

[0022] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0024] Please refer to the following: Figures 1 to 4 The VNT angle sensing system provided in the embodiments of this utility model will now be described.

[0025] like Figures 1 to 4 As shown, a VNT angle sensing system according to an embodiment of this utility model includes an actuator 100, a linkage mechanism 200, and a turbine mechanism 300. A motor actuator 110 is mounted on the actuator 100, and the output end of the motor actuator 110 is connected to the linkage mechanism 200. The motor actuator 110 is connected to the turbine mechanism 300 via the linkage mechanism 200. The turbine mechanism 300 includes a drive rod 310, a toggle block 320, a movable disk 330, a fixed disk 350, and a movable blade 360. The linkage mechanism 200 and the driven rod... One end of 310 is fixedly connected to and drives the drive rod 310 to rotate. The other end of the drive rod 310 is fixedly connected to the actuating block 320 and drives the actuating block 320 to rotate. The actuating block 320 is connected to the movable disk 330. The actuating block 320 can actuate the movable disk 330 to rotate around its own axis. The movable blade 360 ​​is rotatably connected to the fixed disk 350. A rotating block 340 is connected between the rotating shaft of the movable disk 330 and the movable blade 360. An angle sensor 500 is connected to the rotating shaft of the movable blade 360.

[0026] By directly connecting the movable end of the angle sensor 500 to the rotating shaft of the movable blade 360, the movable end of the angle sensor 500 rotates by the same number of degrees as the movable blade 360, ensuring that the feedback angle value is consistent with the actual rotation angle value of the movable blade 360. This avoids the problem that the angle sensor 500 cannot accurately reflect the actual rotation angle of the movable blade 360 ​​due to the gap fit between the multiple links in the linkage mechanism 200 when mounted on the motor actuator 110. It also avoids the problem that inconsistent torque transmitted from the movable blade 360 ​​to the motor actuator leads to inconsistent feedback opening. Accurate feedback of the opening of the movable blade 360 ​​allows for precise control of the movable blade 360, thereby avoiding deviations in the energy recovery of the air compressor.

[0027] Specifically, an angle sensor 500 only needs to be installed on the shaft of one of the movable blades 360. Since the rotation of the movable disk 330 drives the movable blades 360 to rotate, all the movable blades 360 on the fixed disk 350 rotate synchronously at the same angle. Therefore, the opening degree of the movable blade 360 ​​can be measured by installing an angle sensor 500 on the shaft of one of the movable blades 360.

[0028] For example, the rotating block 340 includes a horizontal block 341 and a vertical block 342. One end of the horizontal block 341 is connected to the rotating shaft of the movable blade 360, and the other end of the horizontal block 341 is connected to the vertical block 342. A first positioning groove 332 is provided on the movable disk 330. The vertical block 342 is accommodated in the first positioning groove 332. When the movable disk 330 rotates, the inner sidewall of the first positioning groove 332 pushes the vertical block 342 to rotate with the movable disk 330, thereby driving the horizontal block 341 to rotate around the rotating shaft of the movable blade 360, driving the rotating shaft of the movable blade 360 ​​to rotate, driving the movable blade 360 ​​to rotate, so that the movable blade 360 ​​opens or closes, thereby adjusting the air intake area of ​​the turbine mechanism 300.

[0029] For example, it also includes a vortex housing 400, the turbine mechanism 300 is disposed inside the vortex housing 400, the angle sensor 500 is mounted on the vortex housing 400, the movable end of the angle sensor 500 is fixedly connected to the rotating shaft of the movable blade 360, so that when the rotating shaft of the movable blade 360 ​​rotates, it can synchronously drive the movable end of the angle sensor 500 to rotate. The angle sensor 500 is fixedly mounted on the inner wall of the vortex housing 400, and the signal transmission line of the angle sensor 500 is wrapped and led out of the vortex housing 400 to connect with the control system.

[0030] For example, the movable end of the angle sensor 500 is welded to the rotating shaft of the movable blade 360, and the welding fixation prevents the movable end of the angle sensor 500 from being disconnected from the rotating shaft of the movable blade 360.

[0031] For example, the actuating block 320 is provided with a second positioning groove 321, and the movable disk 330 is provided with a positioning post 331. The positioning post 331 is accommodated in the second positioning groove 321. When the actuating block 320 rotates, the inner wall of the second positioning groove 321 moves the positioning post 331, thereby driving the movable disk 330 to rotate, and then driving the movable blade 360 ​​to rotate. By providing a second positioning groove 321 on the actuating block 320 and a positioning post 331 on the movable disk 330 for transmission, the forward and reverse rotation of the drive rod 310 can control the rotation direction of the movable disk 330, thereby realizing the control of opening and closing of the movable blade 360.

[0032] For example, the linkage mechanism 200 includes a first link 210, a second link 220, and a third link 230. The output end of the motor actuator 110 is fixedly connected to one end of the first link 210, the other end of the first link 210 is rotatably connected to one end of the second link 220, the other end of the second link 220 is rotatably connected to one end of the third link 230, and the other end of the third link 230 is fixedly connected to the drive rod 310. Through the transmission of the first link 210, the second link 220, and the third link 230, the motor actuator 110 can drive the drive rod 310 of the turbine mechanism 300 to rotate.

[0033] The VNT angle sensing system provided by this utility model has the following advantages compared with the prior art:

[0034] The motor actuator 110 of the actuator 100 of this utility model drives the turbine mechanism 300 through the transmission action of the linkage mechanism 200. The linkage mechanism 200 drives the drive rod 310 of the turbine mechanism 300 to rotate, which in turn drives the actuating block 320 to rotate, thereby actuating the movable disk 330 to rotate. The movable disk 330 is connected to the movable blade 360 ​​through the rotating block 340. When the movable disk 330 rotates in one direction, the rotating block 340 drives the movable blade 360 ​​to rotate, causing the movable blade 360 ​​to open. When the movable disk 330 rotates in the other direction, the movable blade 360 ​​closes. The rotation direction of the drive rod 310 is adjusted by the forward and reverse rotation of the motor actuator 110, thereby adjusting the rotation direction of the movable disk 330 and controlling the opening and closing of the movable blade 360. An angle sensor 500 is connected to the rotating shaft of the movable blade 360, so that the angle sensor 500 can detect the actual rotation angle of the movable blade 360. This avoids the problem of inconsistent feedback opening caused by inconsistent torque transmitted from the movable blade 360 ​​to the actuator. By directly connecting the angle sensor 500 to the rotating shaft of the movable blade 360, the feedback angle value is kept consistent with the actual rotation angle value of the movable blade 360, thus improving the feedback accuracy.

[0035] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A VNT angle sensing system, characterized in that, The device includes an actuator, a linkage mechanism, and a turbine mechanism. The actuator is equipped with a motor actuator, the output of which is connected to the linkage mechanism. The motor actuator is connected to the turbine mechanism via the linkage mechanism. The turbine mechanism includes a drive rod, a toggle block, a movable disk, a fixed disk, and movable blades. The linkage mechanism is fixedly connected to one end of the drive rod and drives it to rotate. The other end of the drive rod is fixedly connected to the toggle block and drives it to rotate. The toggle block is connected to the movable disk and can cause it to rotate around its own axis. The movable blades are rotatably connected to the fixed disk. A rotating block connects the shafts of the movable disk and the movable blades. An angle sensor is connected to the shaft of the movable blades.

2. The VNT angle sensing system according to claim 1, characterized in that, The rotating block includes a horizontal block and a vertical block. One end of the horizontal block is connected to the rotating shaft of the movable blade, and the other end of the horizontal block is connected to the vertical block. A first positioning groove is provided on the movable disc, and the vertical block is accommodated in the first positioning groove.

3. The VNT angle sensing system according to claim 2, characterized in that, It also includes a vortex housing, the turbine mechanism is disposed inside the vortex housing, the angle sensor is mounted on the vortex housing, and the movable end of the angle sensor is fixedly connected to the rotating shaft of the movable blade.

4. The VNT angle sensing system according to claim 3, characterized in that, The movable end of the angle sensor is welded to the rotating shaft of the movable blade.

5. The VNT angle sensing system according to claim 4, characterized in that, The actuating block has a second positioning groove, and the movable disc has a positioning post, which is accommodated in the second positioning groove.

6. The VNT angle sensing system according to any one of claims 1 to 5, characterized in that, The linkage mechanism includes a first link, a second link, and a third link. The output end of the motor actuator is fixedly connected to one end of the first link, the other end of the first link is rotatably connected to one end of the second link, the other end of the second link is rotatably connected to one end of the third link, and the other end of the third link is fixedly connected to the drive rod.

Images