Gas compressor blade angle zeroing device

Abstract

The utility model discloses a compressor blade angle zeroing device, and relates to the technical field of adjusting tools. The compressor blade angle zeroing device comprises a positioning plate and a blade angle zeroing device, a first positioning column and a second positioning column; the first positioning column and the second positioning column are both arranged on the positioning plate, and the first positioning column is matched with the first positioning hole; the second positioning column is matched with the second positioning hole; the positioning pipe is movably connected with the positioning plate; a threaded hole is formed in one end of the positioning pipe and matched with a threaded column arranged at the top end of the adjustable blade. Through the arrangement of the first positioning column, the second positioning column and the positioning pipe, the linkage ring in the gas compressor is located at the preset position, and the zero returning device can be installed in the gas compressor. In other words, if the zeroing device is installed on the air compressor, the linkage ring is certainly located at the preset position, namely, the adjustable blades corresponding to the linkage ring are located at the preset angle.

Description

Technical Field

[0001] This application relates to the field of adjustment tool technology, specifically a compressor blade angle zeroing device. Background Technology

[0002] As a core component of a gas turbine, the compressor requires a zeroing operation during production and assembly. Specifically, the compressor zeroing operation involves first rotating each stage of adjustable blades to the 0° position and fixing it; then rotating each stage of adjustable blades to its respective limit opening and closing angles, repeating this process approximately 2 to 3 times; finally, checking the repeatability and consistency of each stage of adjustable blades. To rotate each stage of adjustable blades to a predetermined angle (e.g., 0°), existing technology typically uses a protractor to measure the angle between the centerline of the drive arm and the centerline of the compressor casing, thereby determining and adjusting the angle of each stage of adjustable blades. After the angle of the adjustable blades is adjusted, one adjustable blade is fixed by increasing the tightening torque, thus fixing the current angle of the adjustable blade. This method has the following drawbacks: First, since the adjustable blades are installed circumferentially in the compressor casing, the angle measurement is not planar, and the protractor can only be held by hand and cannot be fixed in position, leading to significant measurement errors. Second, increasing the tightening torque can damage the threaded post at the tip of the adjustable blade. Utility Model Content

[0003] The purpose of this application is to provide a compressor blade angle zeroing device to solve the technical problems of large error when fixing the adjustable blade angle and easy damage to the thread at the tip of the adjustable blade during compressor zeroing operation in the prior art.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] A compressor blade angle zeroing device, wherein the compressor includes a compressor casing, a linkage ring, multiple adjustable blades, and transmission arms corresponding to each adjustable blade; the top of each adjustable blade is provided with a threaded post, and the adjustable blade is threadedly connected to the corresponding transmission arm through the threaded post; the linkage ring is provided with a first positioning hole and a second positioning hole; the compressor blade angle zeroing device includes:

[0006] Positioning plate;

[0007] A first positioning post and a second positioning post; both the first positioning post and the second positioning post are disposed on the positioning plate, and the first positioning post is adapted to the first positioning hole; the second positioning post is adapted to the second positioning hole;

[0008] A positioning tube is movably connected to the positioning plate; one end of the positioning tube is provided with a threaded hole, which is adapted to the threaded post provided at the top of the adjustable blade.

[0009] As a specific solution in this application, the positioning plate is provided with a first limiting hole and a second limiting hole, the first positioning post is movably inserted into the positioning plate through the first limiting hole, and the second positioning post is movably inserted into the positioning plate through the second limiting hole.

[0010] As a specific solution in this application, the positioning plate is provided with a first sliding groove and a plurality of third limiting holes. A sliding block is provided in the first sliding groove, and the sliding block and the first sliding groove form a sliding connection along a first direction. The first direction is perpendicular to the axis of the second limiting hole, and the first limiting hole is provided in the sliding block. The positioning tube can be movably inserted into the positioning plate through any one of the third limiting holes.

[0011] As a specific embodiment of the technical solution in this application, the positioning tube is a cylindrical tube; the third limiting hole is a circular hole.

[0012] As a specific solution in this application, a limiting structure is further provided between the sliding block and the positioning plate; the limiting structure is used to limit the relative displacement between the sliding block and the positioning plate along the first direction.

[0013] As a specific solution in this application, the limiting structure includes:

[0014] A second sliding groove is provided in the positioning plate; the second sliding groove extends along a first direction;

[0015] A locking bolt, the threaded portion of which can pass through the second slide groove and form a threaded connection with the sliding block; the head diameter of the locking bolt is greater than the width of the second slide groove.

[0016] As a specific solution in this application, the limiting structure includes:

[0017] A threaded rod; the threaded rod is threadedly connected to the positioning plate; a handle is provided at the first end of the threaded rod, and the second end of the threaded rod abuts against the sliding block; the axis of the threaded rod is parallel to the first direction;

[0018] At least one elastic element; one end of each elastic element is connected to the positioning plate, and the other end of each elastic element is connected to the sliding block; each elastic element stores elastic potential energy, which at least causes the sliding block to have a tendency to move away from the second positioning post along a first direction.

[0019] As a specific solution in this application, the sliding block is provided with a positioning pointer, and the positioning plate is provided with a scale bar; or, the positioning plate is provided with a positioning pointer, and the sliding block is provided with a scale bar.

[0020] As a specific solution in this application, the first positioning post includes a first column and a second column, with the first end of the first column and the first end of the second column being hinged together.

[0021] As a specific solution in this application, a positioning pin is provided at the second end of the second column, the axis of the positioning pin is parallel to or coincides with the axis of the second column, and the positioning pin is adapted to the first positioning hole.

[0022] Compared with the prior art, the beneficial effects of this application are:

[0023] This application, through the arrangement of the first positioning post, the second positioning post, and the positioning tube, ensures that the linkage ring in the compressor is in a preset position, allowing the zeroing device to be installed in the compressor. In other words, if the zeroing device is installed in the compressor, the linkage ring will always be in the preset position, meaning that each adjustable blade corresponding to the linkage ring will be at a preset angle. In other words, the embodiment of the compressor blade angle zeroing device proposed in this application can quickly perform a zeroing operation on the compressor, with smaller operational errors compared to using a protractor for compressor zeroing. If the zeroing device is installed in the compressor, the linkage ring cannot rotate under the constraint of the first positioning post, the second positioning post, and the positioning tube, ensuring that the angle of the adjustable blades remains constant after zeroing. Compared to existing technologies that require increasing tightening torque to fix the angle of the adjustable blades, the zeroing device proposed in this application is less likely to damage the threaded post at the tip of the adjustable blade due to excessive torque. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of a gas turbine compressor in the prior art;

[0025] Figure 2 This is a three-dimensional schematic diagram of a compressor blade angle zeroing device proposed in the embodiments of this application;

[0026] Figure 3 This is a three-dimensional schematic diagram of a positioning plate proposed in an embodiment of this application;

[0027] Figure 4 This is a three-dimensional schematic diagram of another compressor blade angle zeroing device proposed in the embodiments of this application;

[0028] Figure 5This is a three-dimensional schematic diagram of another compressor blade angle zeroing device proposed in the embodiments of this application;

[0029] Figure 6 This is a three-dimensional schematic diagram of another compressor blade angle zeroing device proposed in the embodiments of this application;

[0030] Figure 7 for Figure 6 A top view schematic diagram of a compressor blade angle zeroing device;

[0031] Figure 8 This is a three-dimensional schematic diagram of a first positioning post proposed in an embodiment of this application;

[0032] Figure 9 This is a schematic diagram of a linkage ring structure proposed in an embodiment of this application;

[0033] Figure 10 This is a schematic diagram of another linkage ring proposed in the embodiments of this application.

[0034] In the diagram: 1. Compressor; 11. Compressor casing; 12. Linkage ring; 121. First positioning hole; 122. Second positioning hole; 13. Transmission arm; 14. Adjustable blade; 2. First positioning post; 21. First column; 22. Second column; 23. Positioning pin; 3. Second positioning post; 4. Positioning tube; 41. Threaded hole; 5. Positioning plate; 51. First limiting hole; 52. Second limiting hole; 53. Third limiting hole; 54. Sliding block; 55. First sliding groove; 56. Second sliding groove; 57. Locking bolt; 58. Positioning pointer; 59. Scale bar; 6. Threaded rod; 7. Elastic element. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] It should be noted that in the description of this application, the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 application.

[0037] Furthermore, it should be understood that, for ease of description, the dimensions of the various components shown in the accompanying drawings are not drawn to actual scale; for example, the thickness or width of some layers may be exaggerated relative to other layers.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined or described in one figure, it will not need to be discussed or described in detail in the description of the subsequent figures.

[0039] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects (e.g., the first positioning post and the second positioning post are respectively represented as different positioning posts, and so on), and are not necessarily used to describe a specific order or sequence. It should be understood that the component names used in this way can be interchanged where appropriate so that the embodiments described herein can be implemented in ways other than those illustrated or described herein.

[0040] Before understanding the embodiments of this application, it is necessary to understand that the core components of the gas turbine compressor, such as... Figure 1 As shown. Specifically, compressor 1 includes compressor housing 11, linkage ring 12, multiple drive arms 13, and adjustable blades 14 corresponding to each drive arm 13. The axis of linkage ring 12 coincides with the axis of compressor housing 11. The first end of each drive arm 13 is hinged to linkage ring 12; the second end of each drive arm 13 is hinged to compressor housing 11. Adjustable blades 14 are disposed at the second end of the corresponding drive arm 13. During use, linkage ring 12 can rotate circumferentially around compressor housing 11, and the circumferentially rotating linkage ring 12 can drive the drive arm 13 to swing around the rotation axis of the corresponding adjustable blade 14, thereby realizing the angle adjustment of the adjustable blade 14. In other words, by controlling the rotation of linkage ring 12, each adjustable blade 14 can present a different deflection angle. It should be noted that since compressors are a mature technology, therefore... Figure 1 The image only shows the multi-stage adjustable blades of compressor 1, without showing other components of compressor 1, and will not be described in detail later.

[0041] To address the technical problem mentioned in the background art where using a protractor to zero-calibrate a compressor results in a large angle error after adjustment of the adjustable blades and easily damages the threads at the tip of the adjustable blades, this application proposes an embodiment of a compressor blade angle zero-calibration device. As described above, the compressor 1 used in this embodiment includes a compressor housing 11, a linkage ring 12, multiple adjustable blades 14, and transmission arms 13 corresponding to each adjustable blade 14. The tip of each adjustable blade 14 is provided with a threaded post, and the adjustable blade 14 is threadedly connected to the corresponding transmission arm 13 via the threaded post. The linkage ring 12 is provided with a first positioning hole 121 and a second positioning hole 122.

[0042] In this embodiment, the compressor blade angle zeroing device includes a positioning plate 5, a first positioning post 2, a second positioning post 3, and a positioning tube 4. Figure 2 As shown, the first positioning post 2 and the second positioning post 3 are both disposed on the positioning plate 5, and the first positioning post 2 is adapted to the first positioning hole 121, and the second positioning post 3 is adapted to the second positioning hole 122. The positioning tube 4 is movably connected to the positioning plate 5. One end of the positioning tube 4 is provided with a threaded hole 41, which is adapted to the threaded post provided at the top of the adjustable blade 14.

[0043] It should be noted that in this embodiment, the matching of the columnar part (e.g., the first positioning post 2, the second positioning post 3, or the threaded post, etc.) with the hole (e.g., the first positioning hole 121, the second positioning hole 122, and the threaded hole 41, etc.) means that the columnar part is installed in the corresponding hole, and there is no relative displacement between the columnar part and the hole along the radial direction of the columnar part, that is, the columnar part cannot wobble when installed in the corresponding hole.

[0044] In use, firstly, the positioning tube 4 is screwed and fixed to the threaded post at the top of the adjustable blade 14; then, the positioning plate 5 is connected to the positioning tube 4; next, the linkage ring 12 is rotated so that the first positioning post 2 on the positioning plate 5 is aligned with the first positioning hole 121, and the second positioning post 3 is aligned with the second positioning hole 122; finally, the first positioning post 2 is inserted into the first positioning hole 121, and the second positioning post 3 is inserted into the second positioning hole 122. As can be seen from the above, rotating the linkage ring 12 to the corresponding position allows the adjustable blade 14 to have the corresponding angle. That is to say, the angle of each adjustable blade 14 in the same level of adjustable blades depends on the rotation position of the linkage ring 12. In this embodiment, if the positioning tube 4 is screwed and fixed to the threaded post at the top of a fixed adjustable blade 14, the first positioning post 2 is inserted into the first positioning hole 121, and the second positioning post 3 is inserted into the second positioning hole 122 (hereinafter referred to as the zeroing device being in the installation state), then the linkage ring 12 cannot rotate under the restriction of the first positioning post 2, the second positioning post 3, and the positioning tube 4. It is easy to understand that if the linkage ring 12 is in a certain position and cannot rotate, then the angles of each adjustable blade 14 at the same level as the linkage ring 12 are also fixed (hereinafter, the angles corresponding to each adjustable blade 14 when the zeroing device is in the installed state are referred to as preset angles). In other words, before the zeroing device proposed in this embodiment is installed, regardless of the position of the linkage ring 12 (that is, regardless of the angle of each adjustable blade 14), as long as the zeroing device is installed on the compressor 1 (that is, the zeroing device is in the installed state), the angles of each adjustable blade 14 corresponding to the linkage ring 12 can be directly adjusted to the preset angles.

[0045] In this embodiment, the positions of the first positioning post 2, the second positioning post 3, and the positioning tube 4 on the positioning plate 5 can be set as needed so that when the zeroing device is in the installation state, the preset angle of each adjustable blade 14 is 0°. Of course, in other embodiments of this application, the preset angle can be adjusted to other angles, such as 5° or 10°.

[0046] It should be clear that the above description of the zeroing device installation method is merely illustrative and does not represent a limitation on its use. For example, in other embodiments of this application, the first positioning pin 2 can be inserted into the first positioning hole 121 first, then the second positioning pin 3 can be inserted into the second positioning hole 122, and finally the positioning tube 4 can be screwed and fixed to the threaded post at the top of the adjustable blade 14. Alternatively, the second positioning pin 3 can be inserted into the second positioning hole 122 first, then the first positioning pin 2 can be inserted into the first positioning hole 121, and finally the positioning tube 4 can be screwed and fixed to the threaded post at the top of the adjustable blade 14, etc. These variations will not be listed here.

[0047] It is important to note that the embodiment of the compressor blade angle zeroing device proposed in this application ensures that the linkage ring in the compressor is in a preset position through the arrangement of the first positioning post, the second positioning post, and the positioning tube, allowing the zeroing device to be installed in the compressor. In other words, if the zeroing device is installed in the compressor (i.e., the zeroing device is in the installed state), the linkage ring will definitely be in the preset position, meaning that each adjustable blade corresponding to the linkage ring will be at a preset angle. In other words, the embodiment of the compressor blade angle zeroing device proposed in this application can quickly perform zeroing operations on the compressor, and its operational error is smaller compared to using a protractor for zeroing operations. As mentioned above, if the zeroing device is installed in the compressor, the linkage ring cannot rotate under the constraint of the first positioning post, the second positioning post, and the positioning tube, meaning that the angle of the adjustable blades after zeroing can remain constant. Compared to the prior art, which requires increasing the tightening torque to fix the angle of the adjustable blades, the zeroing device proposed in this application is less likely to damage the threaded post at the tip of the adjustable blade due to excessive torque.

[0048] In the embodiments of this application, no restrictions are placed on the shape and structure of the positioning plate 5, as long as it can limit the rotation of the linkage ring 12 through the first positioning post 2, the second positioning post 3, and the positioning tube 4. For example, the positioning plate 5 can be as follows: Figure 2 The diagram shows a T-shaped block structure, which can also be represented as follows: Figure 3 As shown, it has a square block structure.

[0049] It is important to understand that when installing the zeroing device to compressor 1, since the positioning tube 4 needs to be threaded onto the threaded post, in this embodiment, the positioning tube 4 can be movably connected to the positioning plate 5, thereby facilitating the rotation of the positioning tube 4. Of course, in other embodiments of this application, the positioning tube 4 and the positioning plate 5 can also be an integral structure. In this embodiment, there are no restrictions on the movable connection method between the positioning tube 4 and the positioning plate 5, as long as it facilitates the rotation of the positioning tube 4 and ensures that the connection between the positioning tube 4 and the positioning plate 5 restricts the rotation of the linkage ring 12 when the zeroing device is in the installed state. For example, it can be as follows... Figure 2 As shown, the positioning plate 5 has a U-shaped opening, through which the positioning tube 4 is movably engaged with the positioning plate 5; or, as... Figure 3 and Figure 4 As shown, the positioning plate 5 is provided with a third limiting hole 53, and the positioning tube 4 is movably inserted into the positioning plate 5 through the third limiting hole 53.

[0050] In this embodiment, no restrictions are placed on the shape and structure of the positioning tube 4 (the same applies to the first positioning post 2 and the second positioning post 3, which will not be described in detail later). For example, the positioning tube 4 can be in the shape of a prism tube, or as... Figure 2As shown, it is cylindrical in shape. To ensure that the positioning tube 4 can still rotate after being inserted into the third limiting hole 53, thus facilitating adjustment of the positioning tube 4, in one embodiment of this application, as... Figure 4 As shown, the positioning tube 4 can be a cylindrical tube, while the third limiting hole 53 can be a circular hole.

[0051] In this embodiment, there are no restrictions on the connection method between the first positioning post 2 or the second positioning post 3 and the positioning plate 5. For example, the first positioning post 2 or the second positioning post 3 can be welded to the positioning plate 5 or integrally connected. To facilitate the replacement and adjustment of the first positioning post 2 and the second positioning post 3, in one embodiment of this application, the positioning plate 5 is provided with a first limiting hole 51 and a second limiting hole 52. The first positioning post 2 can be movably inserted into the positioning plate 5 through the first limiting hole 51 (that is, the first positioning post 2 and the first limiting hole 51 are adapted to each other), and the second positioning post 3 can be movably inserted into the positioning plate 5 through the second limiting hole 52 (that is, the second positioning post 3 and the second limiting hole 52 are adapted to each other).

[0052] It should be noted that a single gas turbine may have multiple stages of adjustable blades, and the dimensions of the linkage ring, transmission arm, etc., in each stage of adjustable blades are different. Furthermore, the dimensions of the linkage ring and transmission arm also differ between different gas turbine models. To ensure that the compressor blade angle zeroing device proposed in this application can be applied to zeroing the angle of adjustable blades in different stages or different models of gas turbines, in one embodiment of this application, such as... Figure 3 and Figure 4 As shown, the positioning plate 5 is provided with a first sliding groove 55 and a plurality of third limiting holes 53. A sliding block 54 is provided in the first sliding groove 55, and the sliding block 54 forms a sliding connection with the first sliding groove 55 along a first direction, which is perpendicular to the axis of the second limiting hole 52 (i.e., as shown). Figure 3 (Direction A) The first limiting hole 51 is provided on the sliding block 54, and the positioning tube 4 can be movably inserted with the positioning plate 5 through any one of the third limiting holes 53.

[0053] It should be noted that if the dimensions of the linkage ring and the transmission arm are different, the relative positions of the first positioning post 2, the second positioning post 3, and the positioning tube 4 need to be adjusted accordingly when using the zeroing device proposed in this application. In this embodiment, since the sliding block 54 can slide along the first direction on the positioning plate 5, the relative positions of the first positioning post 2 and the second positioning post 3 are adjustable. Since the positioning plate 5 is provided with multiple third limiting holes 53, and the positioning tube 4 can be movably inserted into the positioning plate 5 through any one of the third limiting holes 53, the relative positions of the positioning tube 4, the first positioning post 2, and the second positioning post 3 are all adjustable. That is to say, in the embodiment of this application, each third limiting hole 53 can perform a zeroing operation on the angle applied to an adjustable blade of a certain level.

[0054] As mentioned above, during use, the first positioning pin 2 on the positioning plate 5 needs to be inserted into the first positioning hole 121, and the second positioning pin 3 on the positioning plate 5 needs to be inserted into the second positioning hole 122. It should be noted that since the distance between the first positioning hole 121 and the second positioning hole 122 is fixed, while the distance between the first positioning pin 2 and the second positioning pin 3 in this embodiment is adjustable, if the distance between the first positioning pin 2 and the second positioning pin 3 differs significantly from the distance between the first positioning hole 121 and the second positioning hole 122, it will be difficult to smoothly align the first positioning pin 2 or the second positioning pin 3 with the positioning hole (i.e., the first positioning hole 121 or the second positioning hole 122) on the linkage ring 12. If the first positioning pin 2 or the second positioning pin 3 cannot be aligned with the positioning hole on the linkage ring 12, it will also be impossible to insert the first positioning pin 2 or the second positioning pin 3 into the positioning hole on the linkage ring 12. In order to make the distance between the first positioning post 2 and the second positioning post 3 (hereinafter referred to as the first distance) approximately equal to the distance between the first positioning hole 121 and the second positioning hole 122 (hereinafter referred to as the second distance) during use, thereby facilitating subsequent alignment operations, in one embodiment of this application, a limiting structure is also provided between the sliding block 54 and the positioning plate 5. The limiting structure is used to limit the relative displacement between the sliding block 54 and the positioning plate 5 along the first direction.

[0055] In use, the first distance is first adjusted to be approximately equal to the second distance. Then, the sliding block 54 is restricted by the limiting structure so that the sliding block 54 cannot move along the first direction, thereby fixing the first distance. This makes it easier to align the first positioning post 2 with the first positioning hole 121 and the second positioning post 3 with the second positioning hole 122.

[0056] In the embodiments of this application, the limiting structure can be any structure capable of restricting the movement of the sliding block 54 along the first direction. For example, the limiting structure can be as shown in at least the following two embodiments.

[0057] Example 1 of the limiting structure

[0058] In this embodiment, the limiting structure includes a locking bolt 57 and a second sliding groove 56 disposed on the positioning plate 5. Figure 5 As shown, the second groove 56 is along the first direction (i.e., as shown in the figure). Figure 5 The direction shown is A) extending. The threaded portion of the locking bolt 57 can pass through the second slide groove 56 and form a threaded connection with the sliding block 54. The head diameter of the locking bolt 57 is larger than the width of the second slide groove 56, that is, the head of the locking bolt 57 cannot pass through the second slide groove 56.

[0059] In use, if it is necessary to adjust the relative position between the sliding block 54 and the positioning plate 5, loosen the locking bolt 57 to move the sliding block 54 along the first direction. If it is necessary to restrict the position of the sliding block 54 to fix the first distance, tighten the locking bolt 57. After tightening the locking bolt 57, the locking bolt 57 and the sliding block 54 can form a large frictional force with the positioning plate 5, and the large frictional force prevents the sliding block 54 from moving freely along the first direction.

[0060] Example 2 of the limiting structure

[0061] It is important to understand that, while the limiting structure shown in Embodiment 1 allows for easy alignment of the first positioning post 2 and the first positioning hole 121, and the second positioning post 3 and the second positioning hole 122, the inability of the sliding block 54 to move easily after being locked prevents the first positioning post 2 from being fully inserted into the first positioning hole 121 or the second positioning post 3 from being fully inserted into the second positioning hole 122, even with slight differences between the first and second distances. If the first positioning post 2 cannot be fully inserted into the first positioning hole 121 or the second positioning post 3 cannot be fully inserted into the second positioning hole 122, the zeroing device cannot be in the installation state.

[0062] To solve the above-mentioned technical problems, the limiting structure in this embodiment includes a threaded rod 6 and at least one elastic element 7. For example... Figure 6 and Figure 7 As shown, the threaded rod 6 is threadedly connected to the positioning plate 5. A handle is provided at the first end of the threaded rod 6, and the second end of the threaded rod 6 abuts against the sliding block 54. The axis of the threaded rod 6 is parallel to the first direction. One end of each elastic element 7 is connected to the positioning plate 5, and the other end of each elastic element 7 is connected to the sliding block 54. Each elastic element 7 stores elastic potential energy, which at least causes the sliding block 54 to tend to move away from the second positioning post 3 along the first direction.

[0063] In use, the relative position of the sliding block 54 in the positioning plate 5 can be controlled by rotating the threaded rod 6. Since the threaded rod 6 is threadedly connected to the positioning plate 5, the axis of the threaded rod 6 is parallel to the first direction, and the second end of the threaded rod 6 abuts against the sliding block 54. Therefore, if the threaded rod 6 is rotated in the forward direction, the sliding block 54 can overcome the elastic force of the elastic element 7 and move closer to the second positioning post 3. If the threaded rod 6 is rotated in the reverse direction, the contact force between the threaded rod 6 and the sliding block 54 decreases, and under the action of the elastic force of the elastic element 7, the sliding block 54 can move away from the second positioning post 3. In other words, in this embodiment, the sliding block 54 can be adjusted to a suitable position by rotating the threaded rod 6 so that the first distance is slightly greater than the second distance (for example, the first distance can be 0.5 mm or 1.0 mm greater than the second distance), so that the first positioning post 2 can be aligned with the first positioning hole 121, and the second positioning post 3 can be aligned with the second positioning hole 122. During the insertion of the first positioning post 2 and the second positioning post 3, the sliding block 54 can be moved simply by overcoming the elastic force of the elastic element 7. That is to say, in this embodiment, even if there is a slight difference between the first distance and the second distance, since the position of the sliding block 54 is still adjustable, it is convenient for the operator to fully insert the first positioning post 2 into the first positioning hole 121 and the second positioning post 3 into the second positioning hole 122.

[0064] It should be clear that, in the embodiments of this application, the elastic element 7 can be any component capable of applying an elastic force along the first direction to the sliding block 54. For example, the elastic element 7 can be a resilient metal sheet, or as... Figure 6 and Figure 7 As shown, the elastic element 7 can be a spring. This concludes the description of Embodiment 2 of the limiting structure.

[0065] In the embodiments of this application, the operator can adjust the position of the sliding block 54 using the limiting structure based on experience. To reduce the difficulty of accurately adjusting the position of the sliding block 54, and to make the zeroing device suitable for gas turbines requiring zeroing operations, in one embodiment of this application, such as... Figure 6 and Figure 7 As shown, the sliding block 54 is equipped with a positioning pointer 58, and the positioning plate 5 is equipped with a scale bar 59. In use, the operator can precisely adjust the position of the sliding block 54 according to the positioning pointer 58 and the scale bar 59. That is, the zeroing device proposed in this embodiment does not require the operator to have extensive adjustment experience, reducing the difficulty of adjusting the position of the sliding block 54. Of course, in other embodiments of this application, the positioning pointer 58 can be located on the positioning plate 5, and the scale bar 59 can be located on the sliding block 54; details will not be elaborated here.

[0066] It should be clear that in this embodiment, there are no restrictions on the location and manner in which the first positioning hole 121 and the second positioning hole 122 are located on the linkage ring 12. For example: Figure 9 As shown, the axis of the first positioning hole 121 and the second positioning hole 122 on the linkage ring 12 (that is, as shown) Figure 9 The dashed lines shown can be parallel, or as... Figure 10 As shown, the axis of the first positioning hole 121 and the second positioning hole 122 (that is, as shown) Figure 10 The dashed lines shown are all perpendicular to the axis of the linkage ring 12 (perpendicular to the plane of the paper, and passing through...). Figure 10 Point B is shown. Relative to... Figure 9 The hole-opening method shown, assuming the positioning hole diameter is the same, such as Figure 10 The opening method shown has a smaller volume of the part cut out from the linkage ring 12, which can better ensure the structural strength of the linkage ring 12.

[0067] It should be noted that if the first positioning post 2 is a straight rod, the center lines of the first limiting hole 51 and the first positioning hole 121 must be aligned for the first positioning post 2 to be successfully inserted into the first positioning hole 121. Similarly, if the second positioning post 3 is a straight rod, the center lines of the second limiting hole 52 and the second positioning hole 122 must be aligned for the second positioning post 3 to be successfully inserted into the second positioning hole 122. That is to say, in this embodiment, if the first positioning hole 121 and the second positioning hole 122 are configured as follows... Figure 9 As shown, that is, the center lines of the first positioning hole 121 and the second positioning hole 122 are parallel, then the center lines of the first limiting hole 51 and the second limiting hole 52 must also be parallel (for example, as...). Figure 3 The centerlines of the first limiting hole 51 and the second limiting hole 52 shown are both parallel to the thickness direction of the positioning plate 5, that is, as shown in the figure. Figure 3 The direction shown is C); if the first positioning hole 121 and the second positioning hole 122 are set in the following manner... Figure 10 As shown, if the center lines of the first positioning hole 121 and the second positioning hole 122 form a certain angle, then the center lines of the first limiting hole 51 and the second limiting hole 52 must also form the same angle.

[0068] In order to ensure that the centerlines of the first positioning hole 121 and the second positioning hole 122 form a certain angle (for example, such as...) Figure 10 As shown), the included angle between the centerlines of the first limiting hole 51 and the second limiting hole 52 can be the same (for example, as shown). Figure 3 As shown in the figure, in one embodiment of this application, as Figure 8As shown, the first positioning post 2 may include a first post 21 and a second post 22, with the first end of the first post 21 and the first end of the second post 22 hinged together. In use, the first post 21 is used to insert into the first limiting hole 51, and the second post 22 is used to insert into the first positioning hole 121. Since the angle between the first post 21 and the second post 22 is adjustable, even if the centerlines between the first limiting hole 51 and the first positioning hole 121 do not coincide, the first positioning post 2 can still insert into both the first limiting hole 51 and the first positioning hole 121 simultaneously. It should be clear that the hinged connection between the two posts (i.e., the first post 21 and the second post 22) is a mature technology. For example, the first post 21 and the second post 22 can be hinged using a universal joint (a mature technology), or as... Figure 8 The hinge is formed by the pivot, as shown, which will not be described in detail here.

[0069] It should be noted that in the embodiments of this application, the first positioning post 2 is only used as an example for illustration. In other embodiments of this application, it can also be done in the same way. Figure 8 The design of the first positioning post 2 shown here is used to design the second positioning post 3, which will not be elaborated here.

[0070] It should be noted that the smaller the diameter of the positioning holes (e.g., the first positioning hole 121 and the second positioning hole 122) provided on the linkage ring 12, the smaller the impact on the structural strength of the linkage ring 12. To ensure that the linkage ring 12 maintains sufficient structural strength, in one embodiment of this application, such as... Figure 8 As shown, a locating pin 23 is provided at the second end of the second column 22. The axis of the locating pin 23 is parallel to or coincides with the axis of the second column 22. Furthermore, the outer diameter of the locating pin 23 is smaller than the outer diameter of the second column 22, and the locating pin 23 is adapted to the first locating hole 121. Compared to the thicker second column 22, which requires a larger locating hole in the linkage ring 12, the thinner locating pin 23 requires a smaller locating hole, effectively ensuring the structural strength of the linkage ring 12.

[0071] The embodiment of the compressor blade angle zeroing device proposed in this application ensures that the linkage ring in the compressor is in a preset position through the arrangement of the first positioning post, the second positioning post, and the positioning tube, allowing the zeroing device to be installed in the compressor. In other words, if the zeroing device is installed in the compressor (i.e., the zeroing device is in the installed state), the linkage ring will definitely be in the preset position, meaning that each adjustable blade corresponding to the linkage ring will be at a preset angle. In other words, the embodiment of the compressor blade angle zeroing device proposed in this application can quickly perform zeroing operations on the compressor, with smaller operational errors compared to using a protractor for compressor zeroing. When the zeroing device is installed in the compressor, the linkage ring cannot rotate under the constraint of the first positioning post, the second positioning post, and the positioning tube, ensuring that the angle of the adjustable blades remains constant after zeroing. Compared to the prior art, which requires increasing the tightening torque to fix the angle of the adjustable blades, the zeroing device proposed in this application is less likely to damage the threaded post at the tip of the adjustable blade due to excessive torque.

[0072] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A compressor blade angle zeroing device, wherein the compressor includes a compressor casing (11), a linkage ring (12), multiple adjustable blades (14), and transmission arms (13) corresponding to each adjustable blade (14); the top end of each adjustable blade (14) is provided with a threaded post, and the adjustable blade (14) is threadedly connected to the corresponding transmission arm (13) through the threaded post; characterized in that, The linkage ring (12) is provided with a first positioning hole (121) and a second positioning hole (122); the compressor blade angle zeroing device includes: Positioning plate (5); First positioning post (2) and second positioning post (3); both the first positioning post (2) and the second positioning post (3) are disposed on the positioning plate (5), and the first positioning post (2) is adapted to the first positioning hole (121); the second positioning post (3) is adapted to the second positioning hole (122); The positioning tube (4) is movably connected to the positioning plate (5); one end of the positioning tube (4) is provided with a threaded hole (41), which is adapted to the threaded post provided at the top of the adjustable blade (14).

2. The compressor blade angle zeroing device according to claim 1, characterized in that, The positioning plate (5) is provided with a first limiting hole (51) and a second limiting hole (52). The first positioning post (2) is movably inserted into the positioning plate (5) through the first limiting hole (51); the second positioning post (3) is movably inserted into the positioning plate (5) through the second limiting hole (52).

3. The compressor blade angle zeroing device according to claim 2, characterized in that, The positioning plate (5) is provided with a first sliding groove (55) and a plurality of third limiting holes (53). A sliding block (54) is provided in the first sliding groove (55). The sliding block (54) and the first sliding groove (55) form a sliding connection along a first direction. The first direction is perpendicular to the axis of the second limiting hole (52). The first limiting hole (51) is provided in the sliding block (54). The positioning tube (4) can be movably inserted into the positioning plate (5) through any one of the third limiting holes (53).

4. The compressor blade angle zeroing device according to claim 3, characterized in that, The positioning tube (4) is a cylindrical tube; the third limiting hole (53) is a circular hole.

5. The compressor blade angle zeroing device according to claim 3, characterized in that, A limiting structure is also provided between the sliding block (54) and the positioning plate (5); the limiting structure is used to limit the relative displacement between the sliding block (54) and the positioning plate (5) along the first direction.

6. The compressor blade angle zeroing device according to claim 5, characterized in that, The limiting structure includes: A second slide groove (56) is provided on the positioning plate (5); the second slide groove (56) extends along a first direction; A locking bolt (57) has a threaded portion that can pass through the second groove (56) and form a threaded connection with the sliding block (54); the head diameter of the locking bolt (57) is greater than the width of the second groove (56).

7. The compressor blade angle zeroing device according to claim 5, characterized in that, The limiting structure includes: Threaded rod (6); the threaded rod (6) is threadedly connected to the positioning plate (5); the first end of the threaded rod (6) is provided with a handle, and the second end of the threaded rod (6) abuts against the sliding block (54); the axis of the threaded rod (6) is parallel to the first direction; At least one elastic element (7); one end of each elastic element (7) is connected to the positioning plate (5), and the other end of each elastic element (7) is connected to the sliding block (54); each elastic element (7) stores elastic potential energy, which at least causes the sliding block (54) to have a tendency to move away from the second positioning post (3) in a first direction.

8. The compressor blade angle zeroing device according to claim 3, characterized in that, The sliding block (54) is provided with a positioning pointer (58), and the positioning plate (5) is provided with a scale bar (59); or, the positioning plate (5) is provided with a positioning pointer (58), and the sliding block (54) is provided with a scale bar (59).

9. The compressor blade angle zeroing device according to any one of claims 1 to 8, characterized in that, The first positioning post (2) includes a first post (21) and a second post (22), with the first end of the first post (21) and the first end of the second post (22) hinged together.

10. The compressor blade angle zeroing device according to claim 9, characterized in that, The second end of the second column (22) is provided with a positioning pin (23), the axis of the positioning pin (23) is parallel or coincident with the axis of the second column (22), and the positioning pin (23) is adapted to the first positioning hole (121).

Images