Gas compressor, adjustable stationary blade assembly and adjusting mechanism, system and method

Abstract

The invention relates to a gas compressor, an adjustable stationary blade assembly and an adjusting mechanism, system and method. The adjusting mechanism of the adjustable stationary blade comprises an adjusting part, and the adjusting part comprises a driving piece, an angle monitoring piece and a variable-angle power transmission piece. One end of the variable-angle power transmission piece is connected with the driving piece, and the other end of the variable-angle power transmission piece is connected with the angle monitoring piece; wherein the driving part transmits driving force to the angle monitoring part through the variable-angle power transmission part, so that the angle monitoring part drives the adjustable stationary blade to rotate to an adjusting angle; wherein the adjusting angle comprises a target angle and an actual angle, the angle monitoring part drives the adjustable stationary blade to rotate to the actual angle, and the angle monitoring part feeds back the actual angle, so that the driving part corrects the driving force, and the actual angle is equal to the target angle. Therefore, the blades can be adjusted independently, response is quick, and angles can be consistent.

Description

Technical Field

[0001] The technical field of the present invention relates to a compressor, an adjustable stator vane assembly, an adjusting mechanism, a system and a method. Background Art

[0002] Variable Stator Vanes (VSVs) are mainly used to improve the working characteristics of compressors, expand the stable working range of compressors, and prevent surging, and are widely used in aeroengines.

[0003] Currently, the structure of the VSV adjusting mechanism 100’ is as Figure 1 、 Figure 2 shown. During the movement, the hydraulic actuator 1’ transmits torque through the connecting rod 2’, driving the linkage ring 3’ to rotate circumferentially around the engine axis a. At the same time, the rocker arm 4’ moves around the rotation axis b of the adjustable stator vane, driving the adjustable stator vane 5’ to adjust the installation angle. One end of the linkage ring 3’ is connected to the adjustable stator vane 5’ through the rocker arm 4’, and the other end is fixed on the support screw 6’. The other end of the support screw 6’ is supported on the surface of the casing 7’.

[0004] The above-mentioned adjusting mechanism is driven by the hydraulic actuator 1’, and there is a certain lag in the drive, which easily leads to the angle of the adjustable stator vane not following, and may cause the inability to relieve surging in time. Moreover, each stage of the adjustable stator vane 5’ is rotated by the linkage ring 3’ driving the rocker arm 4’. When the engine is in the working state, in order to prevent thermal sticking at the support screw 6’, a large gap needs to be left between the support screw 6’ and the casing 7’ in the cold state. Due to the existence of this gap, the linkage ring 3’ is prone to eccentricity relative to the casing 7’, resulting in inconsistent rotation angles of the adjustable stator vanes 5’ of the same stage and affecting the aerodynamic performance. Summary of the Invention

[0005] The purpose of the present invention is to provide an adjusting mechanism for adjustable stator vanes.

[0006] Another purpose of the present invention is to provide an adjustable stator vane assembly.

[0007] Another purpose of the present invention is to provide a compressor.

[0008] Another purpose of the present invention is to provide an adjusting system for adjustable stator vanes.

[0009] Another purpose of the present invention is to provide an adjusting method for adjustable stator vanes.

[0010] An adjusting mechanism for adjustable stator vanes according to one aspect of the present invention includes an adjusting portion, and the adjusting portion includes: a driving member for providing a driving force; an angle monitoring member for monitoring the adjusting angle; a variable-angle power transmission member, one end of the variable-angle power transmission member is connected to the driving member, and the other end of the variable-angle power transmission member is connected to the angle monitoring member; wherein, the driving member transmits the driving force to the angle monitoring member through the variable-angle power transmission member, so that the angle monitoring member drives the adjustable stator vane to rotate to the adjusting angle; wherein, the adjusting angle includes a target angle and an actual angle, the angle monitoring member drives the adjustable stator vane to rotate to the actual angle, and the angle monitoring member feeds back the actual angle, so that the driving member corrects the driving force to make the actual angle equal to the target angle.

[0011] The technical solution of this application adjusts the angle of the adjustable stator vane by setting a driving member, realizing fast response, eliminating the hysteresis of the drive, having good angle followability of the adjustable stator vane, and preventing situations such as untimely anti-surge. At the same time, each adjustable stator vane is provided with a separate driving member for driving, and an angular displacement sensor is provided to monitor the adjusting angle of the vane, ensuring the consistency of the adjusting angle of the vane, which is beneficial to the stability of the aerodynamic performance. And the adjustment controls between the adjustable stator vanes are independent of each other, and can adapt to more complex adjustment laws.

[0012] In one or more embodiments of the adjusting mechanism for the adjustable stator vane, the variable-angle power transmission member includes a universal hinge.

[0013] In one or more embodiments of the adjusting mechanism for the adjustable stator vane, the angle monitoring member includes an angular displacement sensor.

[0014] In one or more embodiments of the adjusting mechanism for the adjustable stator vane, the adjusting mechanism further includes a fixing portion and a plurality of the adjusting portions, and the plurality of adjusting portions are evenly distributed along the circumference of the fixing portion and are connected to the radial inner wall of the fixing portion.

[0015] In one or more embodiments of the adjusting mechanism for the adjustable stator vane, the fixing portion includes a fixing ring, the fixing ring is provided with a plurality of mounting grooves evenly along the circumference, and the mounting grooves correspondingly mount the driving members of the adjusting portions.

[0016] In one or more embodiments of the adjusting mechanism for the adjustable stator vane, the fixing ring is made of a sheet metal part.

[0017] An adjustable stator vane assembly according to another aspect of the present invention includes a plurality of adjustable stator vanes and the adjusting mechanism for the adjustable stator vane as described above, the plurality of adjustable stator vanes are evenly distributed along the circumference, and the adjustable stator vanes are connected to the adjusting portions of the adjusting mechanism.

[0018] In one or more embodiments of the adjustable stator vane assembly described above, the adjustable stator vane includes a blade shank, a clamping groove is provided on the blade shank, and the angle monitoring member of the adjusting portion is clamped with the blade shank through the clamping groove to drive the adjustable stator vane to rotate.

[0019] A compressor according to another aspect of the present invention includes a plurality of stages of the adjustable stator vane assemblies as described above, and the plurality of stages of adjustable stator vane assemblies are distributed axially.

[0020] An adjusting system for an adjustable stator vane according to another aspect of the present invention includes a controller and an adjusting mechanism for the adjustable stator vane as described above, and the controller sends a control signal to the driving member of the adjusting mechanism and receives a feedback signal from the angle monitoring member of the adjusting mechanism.

[0021] An adjusting method for an adjustable stator vane according to another aspect of the present invention includes: the controller sends a first control signal; the driving member receives the first control signal to generate a first driving force, and the first driving force is transmitted to the angle monitoring member through a variable-angle power transmission member; the angle monitoring member drives the adjustable stator vane to rotate to a first angle and sends a feedback signal of the first angle; the controller receives the feedback signal and corrects the first control signal to generate a second control signal; the driving member receives the second control signal to generate a second driving force to make the adjustable stator vane rotate to a second angle; wherein, the second angle is the target rotation angle of the adjustable stator vane. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other features, properties and advantages of the present invention will become more obvious through the following description in conjunction with the drawings and embodiments. In the drawings, the same reference numerals always represent the same features. It should be noted that these drawings are only examples and are not drawn according to the condition of equal scale, and should not be used to limit the actual protection scope required by the present invention, where:

[0023] Figure 1 It is a schematic structural diagram of a VSV adjusting mechanism of a comparative scheme.

[0024] Figure 2 It is a partially enlarged structural diagram of a VSV adjusting mechanism of a comparative scheme.

[0025] Figure 3 It is a schematic structural diagram of a compressor of an embodiment.

[0026] Figure 4 It is a schematic structural diagram of an adjustable stator vane assembly of an embodiment.

[0027] Figure 5 It is a schematic structural diagram of an adjusting system for an adjustable stator vane of an embodiment.

[0028] Figure 6 Schematic flow diagram of the adjustment method for the adjustable stator vane of an embodiment.

[0029] Reference numerals:

[0030] 100’ - VSV adjustment mechanism;

[0031] 1’ - Hydraulic actuator;

[0032] 2’ - Connecting rod;

[0033] 3’ - Linking ring;

[0034] 4’ - Rocker arm;

[0035] 5’ - Adjustable stator vane;

[0036] 6’ - Support screw;

[0037] 7’ - Casing;

[0038] 1000 - Adjustment mechanism of the adjustable stator vane;

[0039] 100 - Adjustment part;

[0040] 1 - Driving part;

[0041] 2 - Angle monitoring part;

[0042] 3 - Variable angle power transmission part;

[0043] 200 - Fixing part;

[0044] 20 - Fixing ring, 21 - Installation groove, 22 - Radial inner wall;

[0045] 201 - Upper half ring, 202 - Lower half ring;

[0046] 2000 - Adjustable stator vane assembly;

[0047] 4 - Adjustable stator vane, 41 - Stalk, 401 - Card slot;

[0048] 3000 - Compressor;

[0049] 5 - Casing;

[0050] 6 - Hinge;

[0051] 7 - Convex plate;

[0052] 3000 - Adjustment system of the adjustable stator vane;

[0053] 8 - Controller;

[0054] 4000 - Adjustment method of the adjustable stator vane. Detailed implementation mode

[0055] Reference will now be made in detail to various embodiments of the present invention, examples of which are shown in the accompanying drawings and described below. Although the present invention will be described in conjunction with exemplary embodiments, it should be understood that this specification is not intended to limit the present invention to those exemplary embodiments. On the contrary, the present invention is intended to cover not only these exemplary embodiments, but also various alternative forms, modifications, equivalents and other embodiments that may be included within the spirit and scope of the present invention as defined by the appended claims.

[0056] In the following description, the "axial", "circumferential", "radial", "inner", "outer" or other orientation terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention. The directional terms "axial", "circumferential" and "radial" are based on the compressor.

[0057] At the same time, specific terms are used in this application to describe the embodiments of this application. Such as "an embodiment" and / or "one embodiment" mean a certain feature, structure or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that the "one embodiment" or "an embodiment" mentioned twice or more at different positions in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures or characteristics in one or more embodiments of this application can be appropriately combined.

[0058] Flowcharts are used in this application to illustrate the operations performed by the systems according to the embodiments of this application. It should be understood that the operations before or below do not necessarily have to be performed precisely in sequence. Other operations can also be added to these processes, or one or several steps of operations can be removed from these processes.

[0059] Referring Figure 4 As shown, in one embodiment, the specific structure of the adjusting mechanism 1000 of the adjustable stator vane may be that it includes an adjusting part 100, and the adjusting part 100 includes a driving member 1, an angle monitoring member 2 and a variable angle power transmission member 3.

[0060] The driving member 1 is used to provide driving force. The meaning of "driving member 1" refers to the concept relative to manual operation. The driving member refers to being driven non-manually by an external power source. The power source is generally electricity, that is, the driving member is generally a motor, but not limited thereto, as long as it can achieve rapid response for driving. In one embodiment, the driving member 1 is a micro motor, which can achieve rapid driving while meeting the assembly space.

[0061] The angle monitoring member 2 is used to monitor the adjustment angle. In one embodiment, the angle monitoring member 2 includes an angular displacement sensor to achieve the monitoring and feedback of the rotation angle of the adjustable stator vane.

[0062] The variable-angle power transmission member 3, one end of the variable-angle power transmission member 3 is connected to the driving member 1, and the other end of the variable-angle power transmission member 3 is connected to the angle monitoring member 2, so as to change the angle of the driving force output by the driving member 1 and transmit it to the angle monitoring member 2 to realize the rotation of the angle monitoring member 2. In one embodiment, the variable-angle power transmission member 3 includes a universal hinge.

[0063] Wherein, the driving member 1 transmits the driving force to the angle monitoring member 2 through the variable-angle power transmission member 3, so that the angle monitoring member 2 drives the adjustable stator vane to rotate to the adjustment angle. The adjustment angle includes a target angle and an actual angle. The angle monitoring member 2 drives the adjustable stator vane to rotate to the actual angle, and the angle monitoring member 2 feeds back the actual angle, so that the driving member 1 corrects the driving force to make the actual angle equal to the target angle. The meaning of the "target angle" here refers to the angle of the adjustable stator vane when realizing specific functions such as reducing surge.

[0064] Specifically, in one embodiment, the end of the micro motor is connected to the angular displacement sensor through a universal hinge, and the angular displacement sensor is connected to the adjustable stator vane. When the angle of the adjustable stator vane needs to be adjusted, the micro motor receives an independent control signal, drives the angular displacement sensor to rotate through the universal hinge, the angular displacement sensor drives the adjustable stator vane to rotate, and feeds back the adjustment angle. According to the feedback adjustment angle value, the control signal received by the micro motor can be corrected in real time to realize the correction of the adjustment angle of the adjustable stator vane and make the adjustable stator vane rotate to the required target angle.

[0065] The beneficial effects of adopting the above embodiments are as follows: by setting a driving member to adjust the angle of the adjustable stator vane, rapid response is achieved, the hysteresis of the drive is eliminated, the angle followability of the adjustable stator vane is good, and situations such as untimely anti-surge can be prevented. At the same time, each adjustable stator vane is provided with a separate driving member for driving, and an angular displacement sensor is provided to monitor the adjustment angle of the vane, ensuring the consistency of the vane adjustment angle and being beneficial to the stability of the aerodynamic performance. And the adjustment controls between the adjustable stator vanes are independent of each other, and more complex adjustment laws can be adapted.

[0066] Reference Figure 3 、 Figure 4 As shown, in one embodiment, the specific structure of the adjusting mechanism 1000 may further include a fixing part 200 and a plurality of adjusting parts 100 (only one is shown in the figure). The plurality of adjusting parts 100 are evenly distributed along the circumference of the fixing part 200 and are connected to the radial inner wall 22 of the fixing part 200. In one embodiment, such as Figure 3As shown, the fixing part 200 includes a fixing ring 20. A plurality of mounting grooves 21 are uniformly arranged along the circumferential direction on the radial inner wall of the fixing ring 20, and the driving members 1 of the adjusting parts are correspondingly mounted in the mounting grooves 21. The fixing ring 20 is made of a sheet metal part. With such a setting, the structure is simple, which is convenient for manufacturing and assembly, and ensures the axial positions of the respective adjusting parts are fixed.

[0067] Continue to refer to Figure 3 , Figure 4 As shown, in one embodiment, the specific structure of the adjustable stator vane assembly 2000 may be that it includes a plurality of adjustable stator vanes 4 (only 1 is shown in the figure) and the adjusting mechanism 1000 of the adjustable stator vane as described above. The plurality of adjustable stator vanes 4 are uniformly distributed along the circumferential direction and are respectively connected to the adjusting parts 100 of the adjusting mechanism. In one embodiment, as Figure 4 shown, the adjustable stator vane 4 includes a blade shank 41. The blade shank 41 is provided with a clamping groove, and the angle monitoring member 2 of the adjusting part is clamped with the blade shank through the clamping groove to drive the adjustable stator vane to rotate. In this way, it is realized that the rotation angles of the respective adjustable stator vanes can be independently adjusted from each other, which can adapt to more complex adjustment rules, the adjustment response is rapid, the angle followability is good, and the consistency of the angle adjustment can also be ensured.

[0068] Refer to Figure 3 As shown, in one embodiment, the specific structure of the compressor 3000 may be that it includes multiple stages of the adjustable stator vane assemblies 2000 as described above, and the multiple stages of adjustable stator vane assemblies 200 are axially distributed. Specifically, as Figure 3 shown, the compressor 3000 further includes a casing 5. The adjusting mechanism 1000 is surrounded by the radial outside of the casing 5, and different numbers of mounting grooves 21 are provided on the fixing rings 20 of the adjusting mechanisms at each stage as required to mount different numbers of adjusting parts. In this way, the independent adjustment of each stage of adjustable stator vane assembly can be realized, more complex adjustment rules can be achieved, the adjustment response is rapid at the same time, and the consistency of the adjustment angle can also be ensured.

[0069] In one embodiment, as Figure 3 shown, the fixing ring 20 includes a first half ring 201 and a second half ring 202. One radial side of the first half ring 201 and the second half ring 202 is connected by a hinge 6. The first half ring 201 and the second half ring 202 can be opened and closed around the hinge 6. Convex plates 7 are respectively arranged on the other radial sides of the first half ring 201 and the second half ring 202, and the convex plates 7 are in contact when the first half ring 201 and the second half ring 202 are closed. The hinge 6 and the convex plates 7 extend axially to connect the multiple stages of fixing rings 20 in series. With such a setting, it is convenient for assembly.

[0070] Refer to Figure 5As shown, in one embodiment, the specific structure of the adjustable stator vane regulating system 3000 may include a controller 8 and the adjustable stator vane regulating mechanism 1000 as described above. The controller 8 sends a control signal to the driving member 1 of the regulating mechanism and receives the feedback signal from the angle monitoring member 2 of the regulating mechanism. Specifically, when the blade angle needs to be adjusted, the micro motor receives the control signal from the controller 8, drives the angular displacement sensor to rotate through the universal hinge, the angular displacement sensor drives the blade handle to rotate through the card slot, and feeds back the adjustment angle to the controller 8. According to the feedback adjustment angle value, the controller 8 corrects the control signal received by the micro motor in real time to achieve precise adjustment of all adjustable stator vanes.

[0071] Refer to Figure 6 As shown, in one embodiment, the specific steps of the adjustable stator vane regulating method 4000 may include:

[0072] The controller issues a first control signal;

[0073] The driving member receives the first control signal to generate a first driving force, and the first driving force is transmitted to the angle monitoring member through the variable angle power transmission member;

[0074] The angle monitoring member drives the adjustable stator vane to rotate to the first angle and issues a feedback signal of the first angle;

[0075] The controller receives the feedback signal and corrects the first control signal to generate a second control signal;

[0076] The driving member receives the second control signal to generate a second driving force, and makes the adjustable stator vane rotate to the second angle;

[0077] Wherein, the second angle is the target rotation angle of the adjustable stator vane.

[0078] In this way, independent adjustment of the rotation angles of each adjustable stator vane is achieved, which can adapt to more complex adjustment rules, has a rapid adjustment response, good angle followability, and can also ensure the consistency of angle adjustment.

[0079] Although the present invention is disclosed above with preferred embodiments, it is not used to limit the present invention. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modification, equivalent change, and decoration made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims

1. An adjusting mechanism for adjustable stator vanes, characterized in that, it includes an adjusting part, and the adjusting part includes: a driving member for providing a driving force; an angle monitoring member for monitoring the adjustment angle; a variable-angle power transmission member, one end of the variable-angle power transmission member is connected to the driving member, and the other end of the variable-angle power transmission member is connected to the angle monitoring member; wherein, the driving member transmits the driving force to the angle monitoring member through the variable-angle power transmission member, so that the angle monitoring member drives the adjustable stator vane to rotate to the adjustment angle; wherein, the adjustment angle includes a target angle and an actual angle, the angle monitoring member drives the adjustable stator vane to rotate to the actual angle, and the angle monitoring member feeds back the actual angle, so that the driving member corrects the driving force to make the actual angle equal to the target angle.

2. The adjusting mechanism for adjustable stator vanes according to claim 1, characterized in that, the variable-angle power transmission member includes a universal hinge.

3. The adjusting mechanism for adjustable stator vanes according to claim 1, characterized in that, the angle monitoring member includes an angular displacement sensor.

4. The adjusting mechanism for adjustable stator vanes according to claim 1, characterized in that, the adjusting mechanism further includes a fixing part and a plurality of the adjusting parts, and the plurality of adjusting parts are evenly distributed along the circumferential direction of the fixing part and are connected to the radial inner wall of the fixing part.

5. The adjusting mechanism according to claim 4, characterized in that, the fixing part includes a fixing ring, and a plurality of installation grooves are evenly arranged along the circumferential direction of the fixing ring, and the driving members of the adjusting parts are correspondingly installed in the installation grooves.

6. The adjusting mechanism according to claim 5, characterized in that, the fixing ring is made of a sheet metal part.

7. An adjustable stator vane assembly, characterized in that, it includes a plurality of adjustable stator vanes and the adjusting mechanism for adjustable stator vanes according to any one of claims 1-6, the plurality of adjustable stator vanes are evenly distributed along the circumferential direction, and the adjustable stator vanes are connected to the adjusting parts of the adjusting mechanism.

8. The adjustable stator vane assembly according to claim 7, characterized in that, the adjustable stator vane includes a blade stalk, and a clamping groove is arranged on the blade stalk, and the angle monitoring member of the adjusting part is clamped with the blade stalk through the clamping groove to drive the adjustable stator vane to rotate.

9. A compressor, characterized in that, it includes a plurality of stages of the adjustable stator vane assemblies according to any one of claims 7-8, and the plurality of stages of adjustable stator vane assemblies are distributed along the axial direction.

10. An adjusting system for adjustable stator vanes, characterized in that, it includes a controller and the adjusting mechanism for adjustable stator vanes according to any one of claims 1-6, and the controller sends a control signal to the driving member of the adjusting mechanism and receives the feedback signal of the angle monitoring member of the adjusting mechanism.

11. An adjusting method for adjustable stator vanes, characterized in that, it includes: the controller sends a first control signal; the driving member receives the first control signal to generate a first driving force, and the first driving force is transmitted to the angle monitoring member through the variable-angle power transmission member; the angle monitoring member drives the adjustable stator vane to rotate to a first angle and sends a feedback signal of the first angle; The controller receives the feedback signal and corrects the first control signal to generate a second control signal; The driving member receives the second control signal to generate a second driving force, causing the adjustable stator vane to rotate to a second angle; Wherein, the second angle is the target rotation angle of the adjustable stator vane.

Images