Method, system and equipment for measuring rotation angle of stator blade of gas compressor and computer readable storage medium

Abstract

The invention relates to a method, a system and equipment for measuring the rotation angle of a stator blade of a gas compressor and a computer readable storage medium. The measuring method comprises the steps that S1, the displacement W of a linkage ring moving in the circumferential direction of a gas compressor and the effective distance L of a rocker arm are obtained; s2, calculating a swing angle alpha of the rocker arm based on the displacement W and the effective distance L; and S3, calculating the rotation angle x of the stator blade based on the swing angle alpha and the included angle p between the stator blade mounting angle and the center line of the rocker arm. According to the method, the system and the equipment for measuring the rotation angle of the stator blade of the gas compressor and the computer readable storage medium, the rotation angle of the stator blade can be conveniently measured, and the measurement result is accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of measuring the rotation angle of a compressor stator blade, and particularly to a method for measuring the rotation angle of a compressor stator blade, a measuring system, a measuring device, and a computer-readable storage medium. Background Art

[0002] In order to test the control of the compressor flow rate, adjustable stator blades are usually designed in the compressor. The stator blades are driven to rotate by a rocker arm. A plurality of rocker arms are connected to a linkage ring. The movement of the linkage ring drives each rocker arm to swing, thereby synchronously changing the angles of the respective stator blades to achieve the adjustment of the compressor inlet flow rate.

[0003] In order to match the blade rotation angles at different speeds, it is necessary to know the rotation angles of the respective stator blades. In the prior art, a special angle measuring tool is designed to measure the rotation angles of the respective stator blades. The special angle measuring tool has the following defects:

[0004] Complex structure and low measuring efficiency;

[0005] High machining and assembly precision are required, which affects the accuracy of the measurement results. Summary of the Invention

[0006] In view of the above problems of the prior art, the present invention provides a method for measuring the rotation angle of a compressor stator blade, a measuring system, a measuring device, and a computer-readable storage medium, which can conveniently measure the rotation angle of the stator blade and has accurate measurement results.

[0007] Specifically, the present invention provides a method for measuring the rotation angle of a compressor stator blade. The compressor drives the rocker arm through a linkage ring to realize the rotation of the stator blade. The measuring method includes the steps of:

[0008] S1, obtaining the displacement W of the linkage ring moving along the circumferential direction of the compressor and the effective distance L of the rocker arm;

[0009] S2, calculating the swing angle α of the rocker arm based on the displacement W and the effective distance L;

[0010] S3, calculating the rotation angle x of the stator blade based on the swing angle α and the included angle p between the installation angle of the stator blade and the center line of the rocker arm.

[0011] According to an embodiment of the present invention, one end of the rocker arm is fixed on the rotating shaft of the stator blade, and the other end is rotationally matched with the linkage ring. The effective distance L of the rocker arm is the distance from the center of the rotating shaft of the stator blade to the center of rotation of the other end of the rocker arm.

[0012] According to an embodiment of the present invention, in step S1, a jump table is used to obtain the displacement W of the linkage ring moving circumferentially along the compressor.

[0013] According to an embodiment of the present invention, in step S2, the formula for calculating the swing angle α is:

[0014] ɑ = acos(1 - W / L).

[0015] According to an embodiment of the present invention, in step S3, the formula for calculating the rotation angle x of the stator vane is:

[0016] Rotation angle x = swing angle α + included angle p.

[0017] The present invention also provides a measurement system for the rotation angle of a compressor stator vane, which is applicable to the measurement method of the rotation angle of the compressor stator vane described above. The measurement system includes:

[0018] An acquisition unit for acquiring the displacement W of the linkage ring moving circumferentially along the axis of the compressor and the effective distance L of the rocker arm;

[0019] A first calculation unit for calculating the swing angle α of the rocker arm based on the displacement W and the effective distance L;

[0020] A second calculation unit for calculating the rotation angle x of the stator vane based on the swing angle α and the included angle p between the installation angle of the stator vane and the center line of the rocker arm.

[0021] According to an embodiment of the present invention, the measurement system further includes a measurement unit for measuring the displacement W of the linkage ring moving circumferentially along the axis of the compressor, the effective distance L of the rocker arm, and the included angle p.

[0022] According to an embodiment of the present invention, the formula used in the first calculation unit for calculating the swing angle α is:

[0023] ɑ = acos(1 - W / L).

[0024] According to an embodiment of the present invention, the formula used in the second calculation unit for calculating the rotation angle x of the stator vane is:

[0025] Rotation angle x = swing angle α + included angle p.

[0026] The present invention also provides a measurement device for the rotation angle of a compressor stator vane, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the steps of the measurement method for the rotation angle of the compressor stator vane described in any one of the above are implemented.

[0027] The present invention also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the method for measuring the rotation angle of the compressor stator blade described in any one of the foregoing are implemented.

[0028] The method for measuring the rotation angle of the compressor stator blade, the measuring system, the measuring device and the computer-readable storage medium provided by the present invention indirectly obtain the rotation angle of the stator blade by measuring the displacement of the linkage ring, which is simple and easy to implement and the measurement result is accurate.

[0029] It should be understood that the above general description and the following detailed description of the present invention are both exemplary and explanatory, and are intended to provide further explanation of the present invention as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are provided to provide a further explanation of the present invention. They are incorporated into and constitute a part of this application. The accompanying drawings illustrate embodiments of the present invention and, together with this specification, serve to explain the principles of the present invention.

[0031] In the accompanying drawings:

[0032] Figure 1 The flowchart of the method for measuring the rotation angle of the compressor stator blade according to an embodiment of the present invention is shown.

[0033] Figure 2 The partial structural schematic diagram of a compressor according to an embodiment of the present invention is shown.

[0034] Figure 3 is Figure 2 the partial structural schematic diagram of.

[0035] Figure 4 is Figure 3 the structural schematic diagram after the swing angle of the rocker arm in.

[0036] Figure 5 is Figure 2 the partial cross-sectional view of.

[0037] Figure 6 The movement trajectory diagram of the dial indicator pointer according to an embodiment of the present invention is shown.

[0038] Figure 7 The schematic diagram of the included angle between the blade installation angle and the center line of the rocker arm according to an embodiment of the present invention is shown.

[0039] Figure 8 The structural schematic diagram of the measuring system for the rotation angle of the compressor stator blade according to an embodiment of the present invention is shown. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other.

[0041] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0042] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments of the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0043] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0044] In the description of the present application, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom" are usually based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Without contrary instructions, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the scope of protection of the present application; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0045] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is merely for the convenience of distinguishing the corresponding components. Without additional declaration, the above terms have no special meaning, and thus should not be construed as limiting the scope of protection of this application. In addition, although the terms used in this application are selected from well-known and commonly used terms, some of the terms mentioned in the specification of this application may be selected by the applicant according to his or her judgment, and their detailed meanings are described in the relevant parts of this description. In addition, it is required to understand this application not only through the actual terms used, but also through the meaning implied by each term.

[0046] Figure 1 The flowchart of the method for measuring the rotation angle of the compressor stator vane according to an embodiment of the present invention is shown. Figure 2 The partial structural schematic diagram of a compressor according to an embodiment of the present invention is shown. Figure 3 is Figure 2 The partial structural schematic diagram of. Figure 4 is Figure 3 The structural schematic diagram after the rocker arm swings the angle in. Figure 5 is Figure 2 The partial cross-sectional view of. Figure 6 The movement trajectory diagram of the dial indicator pointer according to an embodiment of the present invention is shown. Figure 7 The schematic diagram of the included angle between the blade installation angle and the center line of the rocker arm according to an embodiment of the present invention is shown. Refer to Figures 2 to 5 , the compressor drives the rocker arm 102 through the linkage ring 101 to realize the rotation of the stator vane 103. The adjustable stator vane 103 is a stator vane that can change its own installation angle around a fixed axis. In the prior art, the rotation angle of the stator vane 103 is obtained by measuring with an angle measuring device. Refer to Figure 1 , the present invention provides a method for measuring the rotation angle of the compressor stator vane 103. The measurement method includes the steps of:

[0047] S1, obtaining the displacement W of the linkage ring 101 moving along the circumferential direction of the compressor and the effective distance L of the rocker arm 102;

[0048] S2, calculating the swing angle α of the rocker arm 102 based on the displacement W and the effective distance L, which is equivalent to the rocker arm 102 swinging from the position of Figure 3 to the position of Figure 4 , and the swing angle is α.

[0049] S3, calculating the rotation angle x of the stator vane 103 based on the swing angle α and the included angle p between the installation angle of the stator vane 103 and the center line of the rocker arm 102. Refer to Figure 7 , the included angle between the installation angle of the stator vane 103 and the center line of the rocker arm 102 is p.

[0050] Preferably, refer toFigures 3 to 5 One end of the rocker arm 102 is fixed on the rotating shaft of the stator vane 103, and the other end is rotatably engaged with the linkage ring 101. The effective distance L of the rocker arm 102 is the distance from the center of the rotating shaft of the stator vane 103 to the center of rotation of the other end of the rocker arm 102.

[0051] Preferably, in step S1, a dial indicator 104 is used to obtain the displacement W of the linkage ring 101 moving circumferentially along the compressor. The compressor drives the rocker arm 102 through the linkage ring 101 to rotate the stator vane 103. The circumferential displacement of the linkage ring 101 will cause the pointer of the dial indicator 104 to change, and the movement trajectory of the pointer is for reference Figure 6 .

[0052] Preferably, in step S2, the formula for calculating the swing angle α is:

[0053] ɑ = acos(1 - W / L).

[0054] Preferably, in step S3, the formula for calculating the rotation angle x of the stator vane 103 is:

[0055] Rotation angle x = swing angle α + included angle p, that is, x = acos(1 - W / L) + p.

[0056] Figure 8 The structural schematic diagram of the measuring system for the rotation angle of the compressor stator vane according to an embodiment of the present invention is shown. The present invention also provides a measuring system for the rotation angle of the compressor stator vane 103, which is applicable to the foregoing method for measuring the rotation angle of the compressor stator vane 103. The measuring system 800 includes:

[0057] An acquisition unit 801, configured to acquire the displacement W of the linkage ring 101 moving circumferentially along the axis of the compressor, the effective distance L of the rocker arm 102, and the included angle p;

[0058] A first calculation unit 802, configured to calculate the swing angle α of the rocker arm 102 based on the displacement W and the effective distance L;

[0059] A second calculation unit 803, based on the swing angle α and the included angle p between the installation angle of the stator vane 103 and the center line of the rocker arm 102, calculates the rotation angle x of the stator vane 103.

[0060] Preferably, the measuring system 800 further includes a measuring unit 804. The measuring unit 804 is configured to measure the displacement W of the linkage ring 101 moving circumferentially along the axis of the compressor, the effective distance L of the rocker arm 102, and the included angle p.

[0061] Preferably, the formula used in the first calculation unit to calculate the swing angle α is:

[0062] ɑ = acos(1 - W / L).

[0063] Preferably, the formula for calculating the rotation angle x of the stator vane 103 in the second calculation unit is as follows:

[0064] Rotation angle x = swing angle α + included angle p.

[0065] The present invention also provides a measuring device for the rotation angle of a compressor stator vane, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the steps of any one of the foregoing measuring methods for the rotation angle of a compressor stator vane are implemented.

[0066] The present invention also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of any one of the foregoing measuring methods for the rotation angle of a compressor stator vane are implemented.

[0067] Among them, for the specific implementation manners and technical effects of the measuring system, the measuring device, and the computer-readable storage medium, reference may be made to the embodiments of the measuring method for the rotation angle of a compressor stator vane provided by the present invention above, which will not be elaborated herein.

[0068] A measuring method, a measuring system, a measuring device, and a computer-readable storage medium for the rotation angle of a compressor stator vane provided by the present invention indirectly calculate and obtain the rotation angle of the stator vane by measuring the displacement of the linkage ring. It can conveniently and accurately calibrate the rotation angle of the stator vane, thereby facilitating the control of the stator vane rotation angle, improving the performance of the compressor, being generally easy to implement, and effectively reducing costs.

[0069] Those skilled in the art will further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the embodiments disclosed herein can be implemented as electronic hardware, computer software, or a combination of both. To clearly illustrate this interchangeability of hardware and software, the various illustrative components, blocks, modules, circuits, and steps are described above in terms of their functionality. Whether such functionality is implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system. Skilled artisans may implement the described functionality in different ways for each specific application, but such implementation decisions should not be construed as causing a departure from the scope of the present invention.

[0070] The various illustrative logical modules and circuits described in connection with the embodiments disclosed herein can be implemented or performed with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

[0071] The steps of a method or algorithm described in connection with the embodiments disclosed herein can be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such that the processor can read from, and write to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In the alternative, the processor and the storage medium may reside as discrete components in a user terminal.

[0072] In one or more exemplary embodiments, the described functionality may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software as a computer program product, the functions may be stored on or transmitted via a computer-readable medium as one or more instructions or code. The computer-readable medium includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. The storage media may be any available media that can be accessed by a computer. By way of example and not limitation, such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a web site, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. As used herein, disk and disc include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk, and Blu-ray disc where disks typically reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0073] It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Accordingly, it is intended that the present invention cover modifications and variations of the present invention falling within the scope of the appended claims and their equivalent technical solutions.

Claims

1. A method for measuring the rotation angle of a compressor stator blade, wherein the compressor realizes the rotation of the stator blade through a linkage ring and a rocker arm, and the measuring method comprises the following steps: S1, obtaining the displacement W of the linkage ring along the circumferential direction of the compressor and the effective distance L of the rocker arm; S2, calculating the swing angle α of the rocker arm based on the displacement W and the effective distance L; S3, calculating the rotation angle x of the stator blade based on the swing angle α and the angle p between the stator blade installation angle and the rocker arm centerline.

2. The method for measuring the rotation angle of a compressor stator blade according to claim 1, characterized in that: One end of the rocker arm is fixed on the rotating shaft of the stator blade, and the other end is rotatably matched with the linkage ring. The effective distance L of the rocker arm is the distance from the rotating shaft center of the stator blade to the rotating center of the other end of the rocker arm.

3. The method for measuring the rotation angle of a compressor stator blade according to claim 1, characterized in that: In step S1, a runout table is used to obtain the displacement W of the linkage ring along the circumferential direction of the compressor.

4. The method for measuring the rotation angle of a compressor stator blade according to claim 1, characterized in that: In step S2, the formula for calculating the swing angle α is: ɑ=acos(1-W / L).

5. The method for measuring the rotation angle of a compressor stator blade according to claim 4, characterized in that: In step S3, the calculation formula of the rotation angle x of the stator blade is: Rotation angle x=swing angle α+included angle p.

6. A system for measuring the rotation angle of a compressor stator blade, suitable for the method for measuring the rotation angle of a compressor stator blade as claimed in claim 1, characterized in that: include: An acquisition unit, used to acquire the displacement W of the linkage ring along the circumferential direction of the compressor axis, the effective distance L and the angle p of the rocker arm; A first calculation unit, used for calculating the swing angle α of the rocker arm based on the displacement W and the effective distance L; The second calculation unit calculates the rotation angle x of the stator blade based on the swing angle α and the angle p between the stator blade installation angle and the rocker arm centerline.

7. The measuring system according to claim 6, characterized in that It also includes a measuring unit for measuring the displacement W of the linkage ring along the circumferential movement of the compressor axis, the effective distance L and the angle p of the rocker arm.

8. The measuring system according to claim 6, characterized in that The formula used in the first calculation unit to calculate the swing angle α is: ɑ=acos(1-W / L).

9. The measuring system according to claim 8, characterized in that The formula used in the second calculation unit to calculate the rotation angle x of the stator blade is: Rotation angle x=swing angle α+included angle p.

10. A device for measuring the rotation angle of a compressor stator blade, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method for measuring the rotation angle of the compressor stator blades as described in any one of claims 1 to 5 are implemented.

11. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method for measuring the rotation angle of a compressor stator blade are implemented as described in any one of claims 1 to 5.

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