Blade adjustment mechanism and compressor

Abstract

A blade adjusting mechanism is provided, including a transmission mechanism, comprising: an annular assembly sleeved on the outside of a casing and configured to rotate between a first position and a second position along the circumferential direction of the casing; a plurality of connecting assemblies, each connecting assembly including: a first rocker arm, one end of which is sleeved on the outside of a stator blade, and the other end of which forms a first rolled edge extending radially along the casing; a second rocker arm, one end of which is pivotally disposed within the circumferential surface of the annular assembly, and the other end of which forms a second rolled edge extending radially along the casing; and a pivot member rotatably disposed within the first and second rolled edges; wherein, when the annular assembly rotates from the first position to the second position, the second rocker arm rotates relative to the first rocker arm about the axis of the pivot member, thereby driving the first rocker arm and the stator blade to rotate synchronously. A compressor is also provided.

Description

Technical Field

[0001] At least one embodiment of this disclosure relates to a blade adjustment mechanism, and more particularly to a blade adjustment mechanism and a compressor. Background Technology

[0002] The compressor is one of the important components of a gas turbine. In order to improve the compressor's off-design performance, expand its stable operating range, and prevent compressor stall and surge problems, a portion of the compressor's stator blades are usually designed as adjustable structures to adjust the stator blades' installation angle.

[0003] Currently, most commonly used blade adjustment mechanisms include stator blades, annular assemblies, connectors, and drive mechanisms. Multiple stator blades are evenly spaced along the radial direction of the housing, and at least some of the axial ends of the stator blades extend out of the housing and are connected to the connectors. The annular assembly is fitted around the outside of the housing along the circumferential direction and is connected to both the connectors and the drive mechanism. The drive mechanism drives the annular assembly to rotate circumferentially around the housing, so that the connectors and stator blades connected to the annular assembly swing synchronously.

[0004] During the rotation of the ring assembly, the connector's degree of freedom is restricted, resulting in some torsional deformation. The inherent rigidity of the connector exerts resistance on the adjustment process, causing inconvenience and limiting the adjustment angle. Prolonged use may also lead to fatigue fracture and damage to the connector. Summary of the Invention

[0005] In view of the existing technical problems, the present invention provides a blade adjustment mechanism and a compressor, which at least partially solve the above technical problems.

[0006] One aspect of this disclosure provides a blade adjusting mechanism, comprising: a plurality of stator blades, one end of each stator blade being fitted inside a housing and configured to rotate about a first axis extending radially with respect to the housing; a transmission mechanism, comprising: an annular assembly fitted outside the housing and configured to rotate between a first position and a second position along the circumferential direction of the housing; and a plurality of connecting assemblies, each connecting assembly comprising: a first rocker arm, one end of which is fitted outside one of the stator blades, and the other end of which forms a circumferential axis along the housing. A first rolled edge extending radially; a second rocker arm, one end of which is pivotally disposed within the circumferential surface of the annular assembly, the other end of which forms a second rolled edge extending radially along the casing; and a pivot member rotatably disposed within the first and second rolled edges; wherein, when the annular assembly is rotated from the first position to the second position, the second rocker arm rotates relative to the first rocker arm about a second axis of the pivot member orthogonal to the first axis, and drives the first rocker arm and the stator blade to rotate synchronously about the first axis.

[0007] In one illustrative embodiment, a drive mechanism connected to the annular assembly is further included to drive the annular assembly to rotate between the first position and the second position.

[0008] In one illustrative embodiment, the drive mechanism includes: two first supports disposed on the outer side of the housing; a torque shaft disposed between the two first supports along the axial direction of the housing, configured to oscillate about an axis parallel to the axial direction of the housing between a third position near the housing and a fourth position away from the housing; a drive rod with its two ends pivotally disposed on the torque shaft and the annular assembly, respectively, adapted to drive the annular assembly to rotate according to the oscillation angle of the torque shaft; and an actuation assembly disposed on the outer side of the housing and pivotally connected to the torque shaft, adapted to drive the torque shaft to oscillate between the third and fourth positions; wherein, when the torque shaft oscillates from the third position to the fourth position, the torque shaft moves relative to the first supports along the axial direction of the housing between a fifth and a sixth position.

[0009] In one illustrative embodiment, the actuation component includes: a second support disposed on the outside of the housing; and a hydraulic cylinder, the cylinder body of which is pivotally disposed on the second support, the piston rod of which is pivotally disposed on the torque shaft, and the connection position of the piston rod and the torque shaft having a degree of freedom extending along the axial direction of the housing.

[0010] In one illustrative embodiment, the stator blade includes: a blade body; a rim plate formed at the end of the blade body on the same side as the housing, configured as a cylindrical structure, suitable for fitting inside the housing; and a connecting portion formed at the end of the rim plate opposite to the blade body and extending through the housing, suitable for connecting to the first rocker arm.

[0011] In one illustrative embodiment, the connection includes: a protrusion formed on the flange, the cross-section of the protrusion along the radial direction of the flange being configured to include an ellipse or a polygon, adapted to engage with the first rocker arm; and a threaded shaft formed at the end of the protrusion away from the flange, adapted to install a first nut to limit the relative position of the first rocker arm and the protrusion.

[0012] In one illustrative embodiment, the first rocker arm is configured as a stepped structure, with a limiting hole at the first end of the first rocker arm suitable for engaging with the protrusion, and the second end of the first rocker arm having the first rolled edge.

[0013] In one illustrative embodiment, the second rocker arm is configured as a sheet-like structure, with a pin-shaped portion suitable for connection with the annular assembly provided on the first surface of the second rocker arm, and a second rolled edge provided on the second surface of the second rocker arm opposite to the first surface, at a position offset from the pin-shaped portion.

[0014] In one illustrative embodiment, the annular assembly includes: a plurality of first arcuate members arranged sequentially along the circumferential direction of the casing; and a plurality of second arcuate members disposed between two adjacent first arcuate members, adapted to connect the two adjacent first arcuate members.

[0015] This disclosure also provides a compressor, including a casing and a blade adjustment mechanism.

[0016] According to the blade adjusting mechanism and compressor provided in this disclosure, the connecting assembly of the blade adjusting mechanism includes a first rocker arm, a second rocker arm, and a pivot member. The pivot member is rotatably disposed between the first rolled edge formed by the first rocker arm and the second rolled edge formed by the second rocker arm, so that the second rocker arm has a degree of freedom of rotation relative to the first rocker arm. During the rotation of the annular assembly, the second rocker arm swings while rotating relative to the first rocker arm. Because the first and second rocker arms have a degree of freedom of rotation relative to each other, the first and second rocker arms will not twist during the adjustment of the stator blade angle, which is beneficial to improving the adjustment angle of the blade adjusting mechanism and extending the service life of the adjusting mechanism. Attached Figure Description

[0017] Figure 1 This is a perspective view of a blade adjusting mechanism according to an illustrative embodiment of the present disclosure;

[0018] Figure 2 yes Figure 1 A top view of the connecting component portion of the illustrative embodiment shown;

[0019] Figure 3 yes Figure 2 A partial cross-sectional view along direction AA of the connecting component portion of the illustrative embodiment shown; and

[0020] Figure 4 yes Figure 2 The diagram illustrates the state of the second rocker arm rotating relative to the first rocker arm in a schematic embodiment.

[0021] Figure Labels

[0022] 1. Drive mechanism;

[0023] 11. First support;

[0024] 12. Drive lever;

[0025] 13. Torque shaft;

[0026] 14. Second support;

[0027] 15. Execution components;

[0028] 151. Cylinder block;

[0029] 152. Piston rod;

[0030] 2. Casing;

[0031] 3. Ring-shaped component;

[0032] 31. Second arc-shaped component;

[0033] 32. First arc-shaped component;

[0034] 4. Connecting components;

[0035] 41. First rocker arm;

[0036] 42. Second rocker arm;

[0037] 43. Pivoting component;

[0038] 44. Pin-shaped part;

[0039] 5. Sterile blades;

[0040] 51. Threaded shaft;

[0041] 52. Bumps; and

[0042] 53. Edge plate. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0044] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0045] All terms used herein, including technical and scientific terms, have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0046] When using expressions such as "at least one of A, B, and C," the meaning should generally be interpreted according to the understanding of someone skilled in the art. For example, "a system having at least one of A, B, and C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C. Similarly, when using expressions such as "at least one of A, B, or C," the meaning should generally be interpreted according to the understanding of someone skilled in the art. For example, "a system having at least one of A, B, or C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C.

[0047] Figure 1 This is a perspective view of an adjustment mechanism according to an illustrative embodiment of the present disclosure. Figure 2 yes Figure 1 A top view of the connecting component 4 parts of the schematic embodiment shown. Figure 3 yes Figure 2 A partial cross-sectional view along the AA direction of the connecting component 4 in the schematic embodiment shown. Figure 4 yes Figure 2 The diagram shows the state of the second rocker arm 42 rotating relative to the first rocker arm 41 in an illustrative embodiment.

[0048] In one illustrative embodiment, a plurality of stator blades are evenly spaced along the radial direction on the casing. This disclosure provides a blade adjustment mechanism for adjusting the installation angle of at least a portion of the stator blades.

[0049] This disclosure provides a blade adjustment mechanism, such as Figures 1 to 4As shown, the blade adjustment mechanism includes multiple stator blades 5 and a transmission mechanism. One end of each stator blade 5 is fitted inside the housing 2 and configured to rotate about a first axis extending radially from the housing 2. The transmission mechanism includes an annular assembly 3 and multiple connecting assemblies 4. Each connecting assembly 4 includes a first rocker arm 41, a second rocker arm 42, and a pivot member 43. The annular assembly 3 is fitted onto the outside of the housing 2 and configured to rotate between a first position and a second position along the circumferential direction of the housing 2. One end of the first rocker arm 41 is fitted onto the outside of a stator blade 5, and the other end forms a first rolled edge 411 extending radially from the housing 2. One end of the second rocker arm 42 is pivotally disposed within the circumferential surface of the annular assembly 3, and the other end forms a second rolled edge 421 extending radially from the housing 2. The pivot member 43 is rotatably disposed within the first rolled edge 411 and the second rolled edge 421. When the annular assembly 3 rotates from the first position to the second position, the second rocker arm 42 rotates relative to the first rocker arm 41 about the second axis of the pivot member 43, which is orthogonal to the first pivot axis, and drives the first rocker arm 41 and the stator blade 5 to rotate synchronously about the first axis. In this embodiment, there is a degree of freedom of relative rotation between the first rocker arm 41 and the second rocker arm 42. During the rotation of the annular assembly 3, the end of the second rocker arm 42 connected to the annular assembly 3 moves along the circumferential direction of the casing. The end of the second rocker arm 42 on the same side as the first rocker arm 41 rotates relative to the first rocker arm 41 about the pivot member and pulls the first rocker arm 41 to swing. Neither the first rocker arm 41 nor the second rocker arm 42 will twist.

[0050] In one illustrative embodiment, such as Figure 2 and Figure 3 As shown, through holes are respectively provided inside the first rolled edge 411 and the second rolled edge 421.

[0051] In detail, pivot 43 includes, but is not limited to, bolts.

[0052] Furthermore, the bolt passes sequentially through the first rolled edge 411 and the second rolled edge 421 from one side of the first rocker arm 41, and is locked by the second nut to limit the relative position of the first rocker arm 41 and the second rocker arm 42. In such an embodiment, as... Figure 4 As shown, when the second rocker arm 42 is rotated relative to the first rocker arm 41, the surfaces of the first rolled edge 411 and the second rolled edge 421 on the same side are in contact to prevent relative displacement between the first rocker arm 41 and the second rocker arm 42. It should be understood that the embodiments of this disclosure are not limited thereto.

[0053] For example, pivot 43 includes, but is not limited to, a rotation axis.

[0054] For example, a pivot member 43 is formed on the first rolled edge 411 or the second rolled edge 421 and is constructed as a shaft-shaped member, which is fitted into the through hole formed by the second rolled edge 421 or the first rolled edge 411.

[0055] According to embodiments of this disclosure, such as Figure 1 As shown, the blade adjustment mechanism also includes a drive mechanism 1 connected to the annular assembly 3, which drives the annular assembly 3 to rotate between the first position and the second position.

[0056] According to embodiments of this disclosure, such as Figure 1 As shown, the drive mechanism 1 includes two first supports 11, a torque shaft 13, a drive rod 12, and an actuator 15. The two first supports 11 are located on the outside of the housing 2. The torque shaft 13 is positioned between the two first supports 11 along the axial direction of the housing 2 and is configured to oscillate about an axis parallel to the axial direction of the housing 2 between a third position near the housing 2 and a fourth position away from the housing 2. The two ends of the drive rod 12 are pivotally mounted on the torque shaft 13 and the annular assembly 3, respectively, and are adapted to drive the annular assembly 3 to rotate according to the oscillation angle of the torque shaft 13. The actuator 15 is located on the outside of the housing 2 and pivotally connected to the torque shaft 13, and is adapted to drive the torque shaft 13 to oscillate between the third and fourth positions. When the torque shaft 13 oscillates from the third to the fourth position, it moves relative to the first supports 11 along the axial direction of the housing 2 between a fifth and a sixth position.

[0057] In one illustrative embodiment, such as Figure 1 As shown, the two first supports 11 are respectively disposed at both ends of the outer wall of the casing 2 (e.g. Figure 1 (The upper and lower ends are shown).

[0058] In detail, the torque shaft 13 includes, but is not limited to, being configured as a crankshaft structure.

[0059] Furthermore, the front and rear ends of the crankshaft structure are respectively fitted into the first support 11 on the same side. In this embodiment, the crankshaft body located in the middle rotates eccentrically about the axis of the first support 11 to swing between the third and fourth positions.

[0060] In one illustrative embodiment, the drive rod 12 is configured as a straight-link structure.

[0061] In detail, the direct connecting rod structure is arranged along the tangential direction of the torque shaft 13 and / or the casing 2.

[0062] Furthermore, the two ends of the straight connecting rod structure are pivotally mounted on the outer walls of the annular assembly 3 and the torque shaft 13, respectively.

[0063] In one illustrative embodiment, the number of drive rods 12 is the same as the number of ring components 3.

[0064] In detail, each drive rod 12 drives an annular assembly 3 to rotate circumferentially along the casing 2.

[0065] Furthermore, each drive rod 12 is disposed on one side of the torque shaft 13. In this embodiment, the torque shaft 13 drives each annular component to rotate in the same direction during a single oscillation. It should be understood that the embodiments of this disclosure are not limited thereto.

[0066] For example, each annular component has the same outer diameter, and the drive rod 12 is constructed as a fork-shaped structure, with a single connector on one side and multiple connectors on the other side. The single connector is pivotally connected to the outer periphery of the torque shaft 13, and each connector of the multiple connectors is pivotally connected to the outer periphery of an annular assembly 3. This implementation allows the torque shaft 13 to drive multiple annular assemblies 3 to rotate at the same angular velocity during one oscillation.

[0067] According to embodiments of this disclosure, such as Figure 1 As shown, the actuating component 15 includes, but is not limited to, the second support 14 and the hydraulic cylinder. The second support 14 is located on the outside of the housing 2. The cylinder body 151 of the hydraulic cylinder is pivotally mounted on the second support 14, and the piston rod 152 of the hydraulic cylinder is pivotally mounted on the torque shaft 13. The connection position between the piston rod 152 and the torque shaft 13 is provided with a degree of freedom extending along the axial direction of the housing 2.

[0068] In one illustrative embodiment, the second support 14 is disposed on the outer wall of the casing 2.

[0069] Specifically, the hydraulic cylinder is arranged tangentially along the casing 2 and / or the torque shaft 13. In this embodiment, when the piston rod 152 of the hydraulic cylinder is in its stroke phase, it pushes the torque shaft 13 from the fourth position to the third position (e.g., ...). Figure 1 The ring component 3 (as shown, swinging from right to left) rotates to move from the first position to the second position (as shown). Figure 1 As shown, rotate from right to left so that the connecting assembly 4 and the stator blade 5 are moved closer to the torque shaft 13 (as shown). Figure 1 (As shown, in the counterclockwise direction) oscillates; in the return stroke state of the hydraulic cylinder piston rod 152, it pushes the torque shaft 13 from the third position to the fourth position (as shown). Figure 1 The ring component 3 (as shown, rotating from left to right) is used to move from the second position to the first position (as shown). Figure 1 As shown, rotating from left to right, so that the connecting assembly 4 and the stator blade 5 are moved away from the torque axis 13 (as shown). Figure 1 (Swimming in the clockwise direction shown). It should be understood that the embodiments of this disclosure are not limited thereto.

[0070] For example, the actuating component 15 includes, but is not limited to, cylinders, motors, or other components that drive the annular component to rotate.

[0071] According to embodiments of this disclosure, such as Figure 3 and Figure 4 As shown, the stator blade 5 includes a blade body (not shown), a rim plate 53, and a connecting portion. The rim plate 53 is formed at the end of the blade body on the same side as the housing 2, and is constructed into a cylindrical structure suitable for fitting inside the housing 2. The connecting portion is formed at the end of the rim plate 53 opposite to the blade body and extends through the housing 2, suitable for connecting with the first rocker arm 41.

[0072] According to embodiments of this disclosure, such as Figures 2 to 4 As shown, the connecting portion includes a protrusion 52 and a threaded shaft 51. The protrusion 52 is formed on the flange 53, and the cross-section of the protrusion 52 along the radial direction of the flange 53 is configured to include an ellipse or a polygon, suitable for engaging with the first rocker arm 41. The threaded shaft 51 is formed at the end of the protrusion 52 away from the flange 53, suitable for mounting a first nut to limit the relative position of the first rocker arm 41 and the protrusion 52.

[0073] In one illustrative embodiment, a washer is provided between the first nut and the first rocker arm 41.

[0074] In detail, with the first nut and the threaded shaft 51 engaged, the torque of the stator blade 5 is controlled to be within, but not limited to, 0.1 to 1 N·m.

[0075] In one illustrative embodiment, the cross-section of the bump 52 along the radial direction of the flange 53 is configured as rectangular.

[0076] Specifically, the center of the rectangle is located on the axis of the edge plate 53.

[0077] Furthermore, the cross-section of the protrusion 52 along the radial direction of the flange 53 is configured as a square. It should be understood that the embodiments of this disclosure are not limited thereto.

[0078] For example, the cross section of the protrusion 52 along the radial direction of the flange 53 is constructed to include triangular, pentagonal and other polygonal structures.

[0079] For example, the protrusion 52 is constructed as multiple cylindrical protrusions. The first rocker arm 41 is provided with limiting holes corresponding to the position and shape of each protrusion.

[0080] In one illustrative embodiment, a bushing made of a wear-resistant material is provided between the protrusion 52 and the limiting hole. This implementation helps to improve the wear resistance of the contact area between the protrusion 52 and the limiting hole, and provides a more effective sealing effect.

[0081] According to embodiments of this disclosure, such as Figure 3 and 4As shown, the first rocker arm 41 is constructed in a stepped structure. The first end of the first rocker arm 41 is provided with a limiting hole suitable for engaging with the protrusion 52, and the second end of the first rocker arm 41 is provided with a first rolled edge 411.

[0082] In one illustrative embodiment, the first rocker arm 41 includes a first part and a second part, which are parallel to each other and extend in the radial direction along the edge plate 53.

[0083] In detail, the first and second parts form a smooth transition.

[0084] Furthermore, a limiting hole is provided in the middle of the first part, and a first rolled edge 411 perpendicular to the second part is provided on the outer edge of the second part.

[0085] In one illustrative embodiment, the first rocker arm 41 is, but is not limited to, made of metal.

[0086] Specifically, metallic materials include, but are not limited to, titanium alloys.

[0087] Furthermore, the titanium alloy material includes, but is not limited to, GH2132 alloy. It should be understood that the embodiments disclosed herein are not limited to this. For example, the first rocker arm 41 may be made of other materials with an operating temperature above 100 degrees Celsius.

[0088] In one illustrative embodiment, the first rocker arm 41 is configured as a thin sheet.

[0089] In detail, the sheet includes, but is limited to, those made by sheet metal forming or CNC milling.

[0090] According to embodiments of this disclosure, such as Figure 3 and Figure 4 As shown, the second rocker arm 42 is constructed as a plate-shaped structure, and the first surface of the second rocker arm 42 (as shown) Figure 3 The lower surface shown has a pin-shaped portion 44 suitable for connection with the ring assembly 3, and the second surface of the second rocker arm 42 facing away from the first surface (as shown) is provided with a pin-shaped portion 44. Figure 3 A second rolled edge 421 is provided on the inner surface of the upper surface (shown) at a position offset from the pin-shaped part 44.

[0091] In one illustrative embodiment, the second rocker arm 42 includes a third part.

[0092] In detail, the third part is constructed as a thin sheet.

[0093] Furthermore, from a side view, the third part and the second rolled edge 421 are constructed into an L-shape.

[0094] In one illustrative embodiment, such as Figure 3 and Figure 4As shown, the ends of the second rocker arm 42 and the ring assembly 3 are on the same side (e.g., Figure 3 The pin-shaped part 44 is fixed to the lower surface of the left side shown by at least one method, such as riveting, welding or integral molding.

[0095] In one illustrative embodiment, the second rocker arm 42 is, but is not limited to, made of metal.

[0096] Specifically, metallic materials include, but are not limited to, titanium alloys.

[0097] Furthermore, titanium alloy materials include, but are not limited to, GH2132 alloy. It should be understood that the embodiments disclosed herein are not limited to this. For example, the second rocker arm 42 may be made of other materials with operating temperatures above 100 degrees Celsius.

[0098] According to embodiments of this disclosure, such as Figure 1 As shown, the annular assembly 3 includes a plurality of first arc-shaped members 32 and a plurality of second arc-shaped members 31. The plurality of first arc-shaped members 32 are arranged sequentially along the circumferential direction of the casing 2. The plurality of second arc-shaped members 31 are disposed between two adjacent first arc-shaped members 32, suitable for connecting two adjacent first arc-shaped members 32. This implementation method helps to reduce the manufacturing difficulty and cost of the arc-shaped assembly.

[0099] In one illustrative embodiment, two first arcuate members 32 are included, both of which are configured as generally semi-circular arcuate structures.

[0100] Specifically, the inner diameter of the second arc-shaped member 31 is the same as the outer diameter of the first arc-shaped member 32.

[0101] Furthermore, the second arc-shaped member 31 is connected to the first arc-shaped member 32 by rivets or other fastening methods, so that the centers of the first arc-shaped member 32 and the second arc-shaped member 31 coincide. It should be understood that the embodiments of this disclosure are not limited thereto.

[0102] For example, the arc of one first arc member 32 is constructed as a minor arc, and the arc of another first arc member 32 is constructed as a major arc.

[0103] For example, there may be three, four or other numbers of first arc-shaped members 32, and at least a portion of the arcs of the first arc-shaped members 32 may be constructed as minor arcs.

[0104] In one illustrative embodiment, the circumferential outer surface of each first arcuate member 32 (e.g. Figure 3 The upper surface shown has a plurality of mounting holes evenly spaced, each mounting hole being pivotally connected to a pin portion 44 of a second rocker arm 42.

[0105] In detail, the diameter of the mounting hole is configured to be greater than or equal to the outer diameter of the pin-shaped portion 44.

[0106] Furthermore, in an embodiment where the diameter of the mounting hole is larger than the outer diameter of the pin-shaped part 44, a bushing made of wear-resistant material is provided in the gap between the pin-shaped part 44 and the mounting hole, which helps to reduce wear between the pin-shaped part 44 and the mounting hole.

[0107] This disclosure also provides a compressor, including a casing 2 and a blade adjustment mechanism.

[0108] In one illustrative embodiment, the adjustment mechanism includes a plurality of stator blades 5.

[0109] In detail, multiple stator blades 5 located at the same axial position in the casing 2 form a stator blade array 5, and the stator blades 5 in each stator blade array 5 are arranged radially along the casing 2.

[0110] Furthermore, multiple stator blades 5 are arranged at intervals along the axial direction of the casing 2.

[0111] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this disclosure can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this disclosure. In particular, the features described in the various embodiments and / or claims of this disclosure can be combined or combined in various ways without departing from the spirit and teachings of this disclosure. All such combinations and / or combinations fall within the scope of this disclosure.

[0112] The embodiments of this disclosure have been described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of this disclosure. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. The scope of this disclosure is defined by the appended claims and their equivalents. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of this disclosure, and all such substitutions and modifications should fall within the scope of this disclosure.

Claims

1. A blade adjustment mechanism, suitable for adjusting the installation angle of stator blades disposed on a casing, characterized in that, include: Multiple stator blades (5), one end of each stator blade (5) is fitted inside the housing (2) and configured to rotate about a first axis extending in the radial direction of the housing (2); The transmission mechanism includes: The annular assembly (3), sleeved on the outside of the casing (2), is configured to rotate between a first position and a second position along the circumferential direction of the casing (2); Multiple connection components (4), each of the connection components (4) comprising: A first rocker arm (41) is fitted at one end to the outside of a stator blade (5), and the other end of the first rocker arm (41) forms a first rolled edge (411) extending in the radial direction of the casing (2). A second rocker arm (42), one end of which is pivotally disposed within the circumferential surface of the annular assembly (3), and the other end of which forms a second rolled edge (421) extending radially along the housing (2); and A pivot (43) is rotatably disposed within the first rolled edge (411) and the second rolled edge (421); When the annular component (3) is rotated from the first position to the second position, the second rocker arm (42) rotates relative to the first rocker arm (41) about the second axis of the pivot (43) which is orthogonal to the first axis, and drives the first rocker arm (41) and the stator blade (5) to rotate synchronously about the first axis.

2. The blade adjusting mechanism according to claim 1, characterized in that, It also includes a drive mechanism (1) connected to the ring assembly (3) for driving the ring assembly (3) to rotate between the first position and the second position.

3. The blade adjusting mechanism according to claim 2, characterized in that, The drive mechanism (1) includes: Two first supports (11) are disposed on the outside of the casing (2); The torque shaft (13), disposed between the two first supports (11) along the axial direction of the casing (2), is configured to swing about an axis parallel to the axial direction of the casing (2) between a third position close to the casing (2) and a fourth position far from the casing (2). A drive rod (12), the two ends of which are pivotally mounted on the torque shaft (13) and the annular assembly (3), respectively, is adapted to drive the annular assembly (3) to rotate according to the swing angle of the torque shaft (13); and An actuation component (15) is disposed on the outside of the housing (2) and pivotally connected to the torque shaft (13), and is adapted to drive the torque shaft (13) to swing between the third position and the fourth position; When the torque shaft (13) is swung from the third position to the fourth position, the torque shaft (13) moves between the fifth position and the sixth position relative to the first support (11) along the axial direction of the casing (2).

4. The blade adjusting mechanism according to claim 3, characterized in that, The execution component (15) includes: The second support (14) is disposed on the outside of the casing (2); and The hydraulic cylinder has a cylinder body (151) pivotally mounted on the second support (14), a piston rod (152) pivotally mounted on the torque shaft (13), and the connection position between the piston rod (152) and the torque shaft (13) has a degree of freedom extending along the axial direction of the casing (2).

5. The blade adjusting mechanism according to any one of claims 1 to 4, characterized in that, The stator blade (5) includes: Leaf body; Edge plate (53), formed at the end of the blade on the same side as the casing (2), is constructed in a cylindrical shape and is suitable for fitting inside the casing (2); and A connecting portion is formed at the end of the flange (53) opposite to the blade and extends through the casing (2), and is adapted to connect with the first rocker arm (41).

6. The blade adjusting mechanism according to claim 5, characterized in that, The connecting part includes: A protrusion (52) is formed on the flange (53), the cross-section of the protrusion (52) along the radial direction of the flange (53) being configured to include an ellipse or a polygon, suitable for engaging with the first rocker arm (41); and A threaded shaft (51), formed at the end of the protrusion (52) away from the flange (53), is adapted to mount a first nut to limit the relative position of the first rocker arm (41) and the protrusion (52).

7. The blade adjusting mechanism according to claim 6, characterized in that, The first rocker arm (41) is constructed in a stepped structure. The first end of the first rocker arm (41) is provided with a limiting hole suitable for engaging with the protrusion (52). The second end of the first rocker arm (41) is provided with the first rolled edge (411).

8. The blade adjusting mechanism according to claim 7, characterized in that, The second rocker arm (42) is constructed as a sheet structure. A pin-shaped part (44) suitable for connecting with the ring assembly (3) is provided on the first surface of the second rocker arm (42). A second rolled edge (421) is provided on the second surface of the second rocker arm (42) opposite to the first surface and at a position offset from the pin-shaped part (44).

9. The blade adjusting mechanism according to any one of claims 1 to 4, characterized in that, The ring component (3) includes: A plurality of first arcuate members (32) are arranged sequentially along the circumferential direction of the casing (2); and Multiple second arc-shaped members (31) are disposed between two adjacent first arc-shaped members (32) and are suitable for connecting two adjacent first arc-shaped members (32).

10. A compressor, characterized in that, include: Casing (2); as well as The blade adjustment mechanism as described in any one of claims 1 to 8.

Images