Stator blade adjusting mechanism and gas compressor

Abstract

The invention provides a stator blade adjusting mechanism and a gas compressor, the stator blade adjusting mechanism comprises a linkage ring, a rocker arm and at least three supporting mechanisms, and the linkage ring is used for rotating around the axis of an engine relative to a casing and driving stator blades to rotate through the rocker arm. The at least three supporting mechanisms are distributed in the circumferential direction of the linkage ring, and each supporting mechanism comprises a cross-shaped sleeve and an arc-shaped sliding rail. The cross sleeve comprises a first sleeve and a second sleeve which are connected with each other, and the axis direction of the first sleeve is perpendicular to the axis direction of the second sleeve. The first sleeve is connected with the linkage ring, and the cross sleeve can move in the radial direction of the engine relative to the linkage ring. The second sleeve is in sliding fit with the arc-shaped sliding rail, and the arc-shaped sliding rail is installed on the case and extends around the axis of the engine. In this way, the linkage ring and the cartridge receiver can be supported to be concentric in the cold state and the hot state, then the eccentricity problem caused by deformation of the linkage ring is effectively solved, and the adjustment precision can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of aero-engines, and in particular to a stator blade adjustment mechanism and a compressor. Background Art

[0002] Variable stator vanes (VSVs) are primarily used to improve compressor operating characteristics, expand the compressor's stable operating range, and prevent surge. The VSV adjustment mechanism adjusts the VSV's installation angle based on the engine's operating conditions at varying times. This ensures the rotor blade inlet airflow angle approaches the design value, eliminates airflow separation at the blade back, and extends the compressor's stable operating range.

[0003] VSV adjustment mechanism such as Figure 1 As shown, during the movement, the actuator 1 transmits the actuating force through the torsion bar 8 and the connecting rod 2, driving the linkage ring 3 to rotate circumferentially around the engine axis L1. At the same time, the rocker arm 4 rotates around the rotation axis of the adjustable stator blade 5, driving the adjustable stator blade 5 to adjust the installation angle. To increase the rigidity, support screws 6 are generally arranged circumferentially on the linkage ring 3. The support screws 6 are fixedly connected to the linkage ring 3 and supported on the outer cylindrical surface of the casing 7. Figure 2 and Figure 3 As shown, the linkage ring 3 is connected to the adjustable stator blades 5 via a rocker arm 4 along one axis. When the casing 7 is heated during operation, it expands radially. To prevent interference between the casing 7 and the support screws 6 during operation, a large gap Δ is left between the support screws 6 on the linkage ring 3 and the surface of the casing 7. This gap Δ prevents the support screws 6 from maintaining constant support on the casing 7 during the linkage ring's rotation. Consequently, the linkage ring 3 and casing 7 cannot be concentric with each other, reducing support rigidity. This can cause the linkage ring to deform and become eccentric, resulting in uneven rotation angles of the blades along one axis. Summary of the Invention

[0004] The object of the present invention is to provide a stator blade adjustment mechanism, which can improve the technical problem that deformation and eccentricity of the linkage ring cause uneven rotation angles of the stator blades.

[0005] Another object of the present invention is to provide a compressor that can improve the technical problem of uneven rotation angles of stator blades caused by deformation and eccentricity of the linkage ring.

[0006] The embodiments of the present invention can be implemented in the following ways:

[0007] A stator blade adjustment mechanism includes a linkage ring and a rocker arm, wherein the linkage ring is in driving connection with the rocker arm; the linkage ring is used to rotate relative to the casing around the axis of the engine, so as to drive the stator blades to rotate through the rocker arm to adjust the installation angle of the stator blades; the stator blade adjustment mechanism also includes at least three supporting mechanisms distributed along the circumference of the linkage ring, and the supporting mechanisms include:

[0008] A cross sleeve, comprising a first sleeve and a second sleeve connected to each other, wherein the axial direction of the first sleeve is perpendicular to the axial direction of the second sleeve; the first sleeve is connected to the linkage ring, and the cross sleeve can move relative to the linkage ring in the radial direction of the engine; and

[0009] An arc-shaped slide rail is installed on the casing and extends around the axis of the engine; the second sleeve is in sliding cooperation with the arc-shaped slide rail.

[0010] Optionally, the support mechanism further includes a cylindrical pin, which is connected to both the linkage ring and the first sleeve.

[0011] Optionally, the linkage ring is provided with two connecting arms arranged at intervals and having a first through hole passing through the two connecting arms; the first sleeve has a first inner hole, the first sleeve is arranged between the two connecting arms, and the first inner hole and the first through hole together form a channel for the cylindrical pin to pass through; the distance between the two connecting arms is greater than the length of the first sleeve.

[0012] Optionally, the stator blade adjustment mechanism further includes a connecting pin, which is arranged on one of the linkage ring and the rocker arm, and an axial waist-shaped hole is provided on the other of the linkage ring and the rocker arm, and the axial waist-shaped hole extends along the axial direction of the engine.

[0013] Optionally, the linkage ring has a first mounting arm and a second mounting arm arranged opposite to each other, and the axial waist-shaped hole is arranged through the first mounting arm and the second mounting arm; the stator blade adjustment mechanism also includes a pin sleeve, and the pin sleeve is sleeved with the connecting pin and slides with the axial waist-shaped hole.

[0014] Optionally, a connecting portion is further provided on the arc-shaped slide rail, and the connecting portion is fixedly connected to the casing via connecting screws.

[0015] Optionally, the stator blade adjustment mechanism further includes a locating pin, a first locating hole is provided on the casing, a second locating hole is provided on the connecting portion, and both the first locating hole and the second locating hole cooperate with the locating pin.

[0016] Optionally, the material of the cross sleeve includes self-lubricating material.

[0017] Optionally, twelve supporting mechanisms are distributed along the circumference of the linkage ring.

[0018] A compressor comprises stator blades, a casing and the above-mentioned stator blade adjustment mechanism.

[0019] The stator blade adjustment mechanism and compressor provided by the embodiments of the present invention have the following beneficial effects:

[0020] An embodiment of the present invention provides a stator blade adjustment mechanism, which includes a linkage ring, a rocker arm, and at least three supporting mechanisms. The linkage ring is used to rotate around the axis of the engine relative to the casing, and drives the stator blades to rotate through the rocker arm to achieve adjustment of the installation angle of the stator blades. At least three supporting mechanisms are distributed along the circumference of the linkage ring, and the supporting mechanism includes a cross sleeve and an arc-shaped slide rail. The cross sleeve includes a first sleeve and a second sleeve that are connected to each other, and the axial direction of the first sleeve is perpendicular to the axial direction of the second sleeve. The first sleeve is connected to the linkage ring, and the cross sleeve can move radially along the engine relative to the linkage ring. The second sleeve is slidably matched with the arc-shaped slide rail, and the arc-shaped slide rail is installed on the casing and extends around the axis of the engine. In this way, in the cold state, the linkage ring and the cross sleeve can rotate around the engine axis under the constraint of the slide rail. According to the three-point centering principle, the linkage ring and the casing remain concentric; in the hot state, the linkage ring or the arc-shaped slide rail expands radially outward with the casing, and the cross sleeve can move radially relative to the linkage ring to avoid expansion jamming. The linkage ring can still rotate circumferentially. At the same time, the cross sleeves at various circumferences still support the linkage ring and the casing to remain concentric, thereby effectively improving the eccentricity problem caused by deformation of the linkage ring, ensuring that the rotation angle of the stator blades in one circle is uniform, and helping to improve the adjustment accuracy.

[0021] An embodiment of the present invention also provides a compressor, which includes the above-mentioned stator blade adjustment mechanism, and therefore has the beneficial effect of being able to effectively improve the eccentricity problem caused by the deformation of the linkage ring, ensuring that the rotation angle of the stator blades in one circle is uniform, and helping to improve the adjustment accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above features and advantages of the present invention will be better understood after reading the detailed description of the embodiments of the present disclosure in conjunction with the following drawings. In the drawings, the components are not necessarily drawn to scale, and components with similar related properties or characteristics may have the same or similar reference numerals.

[0023] Figure 1 The figure shows the overall structure of the stator blade adjustment mechanism in the prior art;

[0024] Figure 2 A partial structural diagram of a stator blade adjustment mechanism in the prior art is shown;

[0025] Figure 3 A schematic diagram of the three-dimensional structure of a stator blade adjustment mechanism in the prior art is shown;

[0026] Figure 4 A partial structural diagram of a stator blade adjustment mechanism provided according to one aspect of the present invention is shown;

[0027] Figure 5 A schematic diagram of the connection structure between the arc-shaped slide rail and the casing in the stator blade adjustment mechanism provided according to one aspect of the present invention is shown;

[0028] Figure 6 A schematic diagram of the connection structure between the arc-shaped slide rail and the casing according to one aspect of the present invention is shown;

[0029] Figure 7 The present invention provides a Figure 6 A magnified schematic diagram of the local structure at point A in the middle.

[0030] Reference numerals:

[0031] 1-actuator; 2-connecting rod; 3-linking ring; 4-rocker arm; 5-adjustable stator blade; 6-support screw; 7-casing; 8-torsion bar;

[0032] 100-stator blade adjustment mechanism; 110-linking ring; 111-connecting arm; 112-first through hole; 113-first mounting arm; 114-second mounting arm; 115-axial waist hole; 120-cross sleeve; 121-first sleeve; 122-second sleeve; 131-arc guide rail; 132-connecting part; 133-connecting screw; 134-locating pin; 135-second positioning hole; 141-cylindrical pin; 142-connecting pin; 143-pin sleeve; 150-rocker arm; 211-casing; 212-first positioning hole; 213-stator blade. DETAILED DESCRIPTION

[0033] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Note that the various aspects described below with reference to the accompanying drawings and specific embodiments are merely exemplary and should not be construed as limiting the scope of protection of the present invention.

[0034] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inner", "outer", "vertical" and the like appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the invention is usually placed when in use, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] At the same time, it should be noted that the terms "first", "second", etc. are only used to distinguish and describe, and cannot be understood as indicating or implying relative importance.

[0036] It should also be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connection, integral connection, or detachable connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0037] Figure 4 This is a partial structural diagram of the stator blade 213 adjustment mechanism 100 provided in this embodiment. Figure 5 This is a schematic diagram of the connection structure between the arc-shaped slide rail 131 and the casing 211 in the stator blade 213 adjustment mechanism 100 provided in this embodiment. This embodiment provides a stator blade 213 adjustment mechanism 100, and accordingly, also provides a compressor (not shown).

[0038] The compressor includes a stator blade 213 adjustment mechanism 100, as well as a casing 211 and stator blades 213. The stator blade 213 adjustment mechanism 100 is mounted on the casing 211 and is used to adjust the installation angle of the stator blades 213. Generally speaking, the casing 211 is a cylindrical structure whose axis coincides with the engine axis L2. Therefore, the "axis of the casing 211" mentioned in the description of this embodiment can also be regarded as the engine axis.

[0039] The main structure of the stator blade 213 adjustment mechanism 100 can be adopted Figure 1The VSV adjustment mechanism shown in FIG. 1 has a consistent structure, namely, the power of the actuator is transmitted to the linkage ring 110 via a connecting rod, and the rotation of the linkage ring 110 about the axis of the engine (which can also be regarded as the axis of the casing 211 in this embodiment) drives the rocker arm 150 to move, and finally drives the stator blades 213 to rotate about the rotation axis L3 through the rocker arm 150, thereby adjusting the installation angle of the stator blades 213. The embodiments of the present invention mainly improve the linkage ring 110 and the structure connected to the linkage ring 110. This improved structure is described in detail below, and other parts of the stator blade 213 adjustment mechanism 100, such as the actuator, are not further described.

[0040] In this embodiment, the stator blade 213 adjustment mechanism 100 includes a linkage ring 110, a rocker arm 150, and at least three support mechanisms. The linkage ring 110 is configured to rotate relative to the casing 211 about the engine axis. The rocker arm 150 drives the stator blades 213 to rotate, thereby adjusting the installation angle of the stator blades 213. The at least three support mechanisms are distributed circumferentially around the linkage ring 110 and include a cross sleeve 120 and an arcuate slide rail 131. The cross sleeve 120 includes a first sleeve 121 and a second sleeve 122, which are interconnected. The axis of the first sleeve 121 is perpendicular to the axis of the second sleeve 122. The first sleeve 121 is connected to the linkage ring 110 and is capable of radial movement relative to the linkage ring 110 in the engine's radial direction. The second sleeve 122 slidably engages with the arcuate slide rail 131, which is mounted on the casing 211 and extends about the engine axis. In this way, in the cold state, the linkage ring 110 and the cross sleeve 120 can rotate around the engine axis under the constraint of the slide rail. According to the three-point centering principle, the linkage ring 110 and the casing 211 remain concentric; in the hot state, the linkage ring 110 or the arc-shaped slide rail 131 expands radially outward with the casing 211, and the cross sleeve 120 can move radially relative to the linkage ring 110 to avoid expansion jamming. The linkage ring 110 can still rotate circumferentially. At the same time, the cross sleeves 120 at various circumferential locations still support the linkage ring 110 and the casing 211 to remain concentric, thereby effectively improving the eccentricity problem caused by the deformation of the linkage ring 110, ensuring that the rotation angle of the stator blades 213 in one circle is uniform, which helps to improve the adjustment accuracy.

[0041] Specifically, the linkage ring 110 is as follows: Figure 3 The structure is annular, and a plurality of rocker arms 150 ( Figure 3In the figure, only one rocker arm 150 on the same linkage ring 110 and the stator blade 213 connected to the rocker arm 150 are illustrated, and multiple rocker arms 150 are distributed along the circumferential direction of the casing 211. When the linkage ring 110 rotates around the axis of the casing 211 relative to the casing 211, the rocker arm 150 swings around the rotation axis L driven by the linkage ring 110, and then drives the stator blade 213 to rotate around the rotation axis L by a certain angle, thereby realizing the adjustment of the installation angle of the stator blade 213. The arc-shaped slide rail 131 is an arc-shaped structure extending around the axis of the engine. The second sleeve 122 is sleeved outside the arc-shaped slide rail 131 and slides with the arc-shaped slide rail 131. Therefore, the second sleeve 122 is arc-shaped. The "axis direction of the first sleeve 121 is perpendicular to the axis direction of the second sleeve 122" mentioned above refers to the tangent direction of the connection position between the second sleeve 122 and the first sleeve 121, that is, Figure 5 T direction in .

[0042] Figure 6 Schematic diagram of the connection structure between the arc-shaped slide rail 131 and the casing 211 in this embodiment. Figure 7 for Figure 6 A partial structure enlarged diagram of the middle A. Please refer to Figure 4-Figure 7 Optionally, in this embodiment, the number of support mechanisms is twelve, and the twelve support mechanisms are evenly distributed around the axis of the casing 211. Accordingly, the first sleeves 121 of the twelve support mechanisms can be slidably connected to the linkage ring 110, and thus the linkage ring 110 has twelve structures connected to the support mechanisms. It is understandable that in other embodiments, the number of support mechanisms can be specifically set to ensure that the number of support mechanisms is greater than or equal to three, so that three-point centering can be achieved. Furthermore, the arcuate slide rails 131 in this embodiment are arranged in a one-to-one correspondence with the cross sleeves 120. Therefore, accordingly, in this embodiment, there are twelve arcuate slide rails 131 and twelve cross sleeves 120. It is understandable that in other embodiments, a structure in which multiple cross sleeves 120 share one arcuate slide rail 131 can also be set.

[0043] like Figure 6 and Figure 7 As shown, the arcuate rail 131 is further provided with a connecting portion 132, which is fixedly connected to the receiver 211 via connecting screws 142, 133. Specifically, the connecting portion 132 is an L-shaped structure provided at one end of the arcuate rail 131, extending radially along the receiver 211. The other end of the connecting portion 132 abuts against the outer circumference of the receiver 211 and is fixedly connected to the receiver 211 via connecting screws 142, 133. It should be noted that the specific connection method and connection location between the arcuate rail 131 and the receiver 211 are not limited to this. The arcuate rail 131 can also be fixedly connected to the receiver 211 by an integral molding method, or can be connected to other locations on the receiver 211.

[0044] Furthermore, the stator blade 213 adjustment mechanism 100 also includes a positioning pin 134, a first positioning hole 212 is provided on the casing 211, and a second positioning hole 135 is provided on the connecting portion 132. The first positioning hole 212 and the second positioning hole 135 are both matched with the positioning pin 134, thereby ensuring the installation position accuracy of the arc slide rail 131 on the casing 211 through the high-precision positioning pin 134, and ensuring that multiple arc slide rails 131 are concentric.

[0045] Please refer again Figure 4 and Figure 5 In this embodiment, the support mechanism further includes a cylindrical pin 141, which is connected to both the linkage ring 110 and the first sleeve 121. That is, the first sleeve 121 is connected to the linkage ring 110 via the cylindrical pin 141. Specifically, the linkage ring 110 has two connecting arms 111 spaced apart from each other at one axial end. The spacing between the two connecting arms 111 is in the radial direction of the linkage ring 110. Since the linkage ring 110 is coaxial with the casing 211 after being installed outside the casing 211, the radial direction of the linkage ring 110 can also be regarded as the radial direction of the casing 211.

[0046] The first sleeve 121 has a first inner hole and is positioned between the two connecting arms 111. The first inner hole and the first through-hole 112 together form a passage for a cylindrical pin 141 to pass through. Specifically, the cylindrical pin 141 passes through the holes in both connecting arms 111 and the first inner hole, thereby connecting the first sleeve 121 to the linkage ring 110. The distance between the two connecting arms 111 is greater than the length of the first sleeve 121. Specifically, when the first sleeve 121 is installed between the two connecting arms 111, the first sleeve 121 has a certain amount of space to move in the direction from one connecting arm 111 to the other connecting arm 111 (i.e., in the radial direction of the linkage ring 110). When the casing 211 changes from hot to cold and experiences radial dimensional changes, the radial movement of the first sleeve 121 relative to the linkage ring 110 offsets these changes, preventing deformation of the linkage ring 110. This also ensures stable support for the linkage ring 110 in the event of deformation of the casing 211. Specifically, the first sleeve 121 is a circular tubular structure, and the axial direction thereof is the axial direction of the first inner hole.

[0047] Furthermore, the cross sleeve 120 may be made of a self-lubricating material, and may be made entirely of the self-lubricating material or of a metal material with a lubricating coating. Optionally, the self-lubricating material may be graphite-filled polyimide.

[0048] Please continue to refer to Figure 4 and Figure 5In this embodiment, the stator blade 213 adjustment mechanism 100 further includes a connecting pin 142, which is disposed on one of the linkage ring 110 and the rocker arm 150. The other of the linkage ring 110 and the rocker arm 150 is provided with an axially oriented waisted hole 115, which extends axially along the engine. Specifically, in this embodiment, the connecting pin 142 is disposed on the rocker arm 150, and the axially oriented waisted hole 115 is disposed on the linkage ring 110. Since the linkage ring 110 is coaxial with the engine, the length direction of the axially oriented waisted hole 115 is parallel to the axial direction of the linkage ring 110.

[0049] It should be noted that “the connecting pin 142 is arranged on the rocker arm 150” can mean that the connecting pin 142 and the rocker arm 150 are an integrated structure, or are fixed to the rocker arm 150 in other ways, or a through hole is provided on the rocker arm 150 for the connecting pin 142 to pass through, and the setting of the connecting pin 142 on the rocker arm 150 is achieved by plugging the connecting pin 142 into the through hole.

[0050] By providing the axial waist-shaped hole 115, on the one hand, the processing accuracy of the holes on the casing 211, the linkage ring 110 and the rocker arm 150 can be reduced, and the processing difficulty and processing cost can be reduced. On the other hand, the connection between the rocker arm 150 and the linkage ring 110 is transformed from only rotational cooperation to rotational and sliding connection. Since the connection between the linkage ring 110 and the arc-shaped slide rail 131 through the cross sleeve 120 does not provide axial activity space, when axial movement is required, it is achieved by the axial movement of the rocker arm 150 relative to the linkage ring 110, and the axial movement of the linkage ring 110 relative to the casing 211 is eliminated, thereby avoiding the problem of connecting rod tilting and force transmission loss caused by the axial movement of the linkage ring 110.

[0051] Furthermore, the linkage ring 110 has a first mounting arm 113 and a second mounting arm 114 disposed opposite each other, and an axial waist-shaped hole 115 is provided through the first mounting arm 113 and the second mounting arm 114. The stator blade 213 adjustment mechanism 100 further includes a pin sleeve 143, which is sleeved on the connecting pin 142 and slidably engaged with the axial waist-shaped hole 115. Specifically, the two ends of the pin sleeve 143 respectively slidably engage with the first mounting arm 113 and the second mounting arm 114. In this way, the connecting pin 142 is installed in the axial waist-shaped hole 115 of the linkage ring 110 through the pin sleeve 143, which can further improve the adjustment accuracy and prevent the connecting pin 142 from tilting in the circumferential waist-shaped hole.

[0052] Optionally, the pin sleeve 143 includes a self-lubricating material. It can be made entirely of the self-lubricating material or a metal material with a lubricating coating.

[0053] The stator blade 213 adjustment mechanism 100 and the compressor provided by the embodiment of the present invention realize the sliding of the casing 211 on the linkage ring 110 by setting a cross sleeve 120 and an arc-shaped slide rail 131. At the same time, the cross sleeve 120 and the linkage ring 110 can move relative to each other in the radial direction, ensuring that the linkage ring 110 can be reliably supported in both cold and hot states of the casing 211, avoiding deformation and eccentricity of the linkage ring 110. At the same time, by setting an axial waist-shaped hole 115 to connect the rocker arm 150 and the linkage ring 110, not only can the processing accuracy requirements, processing difficulty and processing cost be reduced, but also the problem of connecting rod tilting and force transmission loss caused by axial movement of the linkage ring 110 can be avoided.

[0054] The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technology in this field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention.

Claims

1. A stator blade adjustment mechanism, comprising a linkage ring and a rocker arm, wherein the linkage ring is in driving connection with the rocker arm; the linkage ring is used to rotate relative to the casing around the axis of the engine, so as to drive the stator blade to rotate through the rocker arm, thereby adjusting the installation angle of the stator blade; characterized in that: The stator blade adjustment mechanism further includes at least three supporting mechanisms distributed along the circumference of the linkage ring, and the supporting mechanisms include: A cross sleeve, the cross sleeve comprising a first sleeve and a second sleeve connected to each other, the axial direction of the first sleeve being perpendicular to the axial direction of the second sleeve; the first sleeve being connected to the linkage ring, and the cross sleeve being able to move relative to the linkage ring along the radial direction of the engine; and An arc-shaped slide rail is installed on the casing and extends around the axis of the engine; the second sleeve is slidably matched with the arc-shaped slide rail.

2. The stator blade adjustment mechanism according to claim 1, characterized in that: The supporting mechanism further comprises a cylindrical pin, and the cylindrical pin is connected to the linkage ring and the first sleeve at the same time.

3. The stator blade adjustment mechanism according to claim 2, characterized in that: The linkage ring is provided with two connecting arms arranged at intervals, and has a first through hole penetrating the two connecting arms; the first sleeve has a first inner hole, the first sleeve is arranged between the two connecting arms, and the first inner hole and the first through hole together form a channel for the cylindrical pin to pass through; the distance between the two connecting arms is greater than the length of the first sleeve.

4. The stator blade adjustment mechanism according to claim 1, characterized in that: The stator blade adjustment mechanism also includes a connecting pin, which is arranged on one of the linkage ring and the rocker arm. An axial waist-shaped hole is arranged on the other of the linkage ring and the rocker arm, and the axial waist-shaped hole extends along the axial direction of the engine.

5. The stator blade adjustment mechanism according to claim 4, characterized in that: The linkage ring has a first mounting arm and a second mounting arm that are arranged opposite to each other, and the axial waist-shaped hole passes through the first mounting arm and the second mounting arm; the stator blade adjustment mechanism also includes a pin sleeve, and the pin sleeve is sleeved with the connecting pin and slidingly cooperates with the axial waist-shaped hole.

6. The stator blade adjustment mechanism according to claim 1, characterized in that: The arc-shaped slide rail is also provided with a connecting portion, and the connecting portion is fixedly connected to the casing via connecting screws.

7. The stator blade adjustment mechanism according to claim 6, characterized in that: The stator blade adjustment mechanism also includes a positioning pin. A first positioning hole is provided on the casing, and a second positioning hole is provided on the connecting portion. Both the first positioning hole and the second positioning hole cooperate with the positioning pin.

8. The stator blade adjustment mechanism according to claim 1, characterized in that: The material of the cross sleeve includes self-lubricating material.

9. The stator blade adjustment mechanism according to claim 1, characterized in that: Twelve supporting mechanisms are distributed along the circumference of the linkage ring.

10. A compressor, characterized in that: The compressor comprises stator blades, a casing and a stator blade adjustment mechanism as described in any one of claims 1-9.

Images