Compressor test piece

Abstract

The invention discloses a gas compressor test piece which comprises a casing, a first stator blade group, a second stator blade group and a stator blade adjusting assembly. According to the gas compressor test piece, the installation space between the first boss and the second boss is used for installing the static blade adjusting assembly, so that the static blade adjusting assembly can adjust the static blades in the two adjacent static blade sets at the same time. Compared with traditional independent distribution, the non-independent distributed static blade adjusting mechanism arrangement is adopted, and the mounting space in the axial direction of the case can be saved. As the mounting space in the axial direction is saved, even if a compressor test piece is formed after the size of the compressor is reduced, enough adjustable stages can still be kept, and the surge margin of the compressor is kept so as to adapt to different engine operation conditions. Due to the fact that more adjustable stages and improved surge margin are kept, the test effect of the compressor test piece is optimized, and the test effect is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of gas turbine technology, and more specifically to a compressor test piece. Background Technology

[0002] The compressor stator vane adjustment mechanism allows the stator blades to change their installation angle according to the engine's operating conditions. The main purpose of using adjustable stator vanes in engines is to improve engine operating stability and thus prevent surge problems.

[0003] In related technologies, the development of compressor test pieces requires adjustments to multiple sets of blades. However, this necessitates scaling down the original compressor. Consequently, the axial space of the compressor test piece is limited, affecting the installation space of the axially "independently" distributed adjustment mechanism. This reduces the number of adjustable stages, impacting the compressor surge margin and ultimately affecting the test results. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, embodiments of the present invention provide a compressor test piece.

[0006] The compressor test piece of this invention includes a casing, a first stator blade group, a second stator blade group, and a stator blade adjustment assembly. The outer circumferential surface of the casing is provided with a first boss and a second boss arranged at intervals along its axial direction. The first stator blade group is disposed on the first boss and includes a plurality of first stator blades arranged at intervals along the circumference of the casing. The second stator blade group is disposed on the second boss and includes a plurality of second stator blades arranged at intervals along the circumference of the casing.

[0007] The stator vane adjustment assembly is located outside the housing and between the first boss and the second boss. The stator vane adjustment assembly includes a first drive ring and a second drive ring. The first drive ring and the second drive ring are rotatably sleeved on the housing. The first drive ring is connected to the first stator vane to adjust the angle of the first stator vane, and the second drive ring is connected to the second stator vane to adjust the angle of the second stator vane.

[0008] In some embodiments, the stator blade adjustment assembly includes a self-aligning assembly connected to the first drive ring and the second drive ring, for adjusting the concentricity of the first drive ring and the second drive ring with the rotor.

[0009] In some embodiments, the self-aligning assembly includes a first mounting base and a first eccentric shaft. The first mounting base has a first mounting hole extending axially along the casing. The first eccentric shaft passes through the first mounting hole and extends out of the first mounting hole at both ends. A first drive ring and a second drive ring are disposed on both sides of the first mounting base axially along the casing. The inner side of the first drive ring abuts against one end of the eccentric shaft, and the inner side of the second drive ring abuts against the other end of the eccentric shaft.

[0010] In some embodiments, the first eccentric shaft includes a first mounting section, a fixed section, and a second mounting section connected in sequence. The fixed section passes through the mounting hole, and the first mounting section and the second mounting section extend out of the first mounting hole. The axes of the first mounting section and the second mounting section are eccentrically arranged relative to the axis of the fixed section. The inner side of the first drive ring abuts against the first mounting section, and the inner side of the second drive ring abuts against the second mounting section. In a projection plane orthogonal to the central axis of the fixed section, the line connecting the central axis of the first mounting section and the central axis of the fixed section and the line connecting the central axis of the second mounting section and the central axis of the fixed section form an angle.

[0011] In some embodiments, the centering component includes:

[0012] A first pulley, rotatably mounted on the first mounting section, wherein the inner side of the first drive ring abuts against the outer peripheral surface of the first pulley; and / or

[0013] The second pulley is rotatably mounted on the second mounting section, and the inner side of the second drive ring abuts against the outer circumferential surface of the second pulley.

[0014] In some embodiments, the self-aligning assembly includes a first mounting base, a second mounting base, a first eccentric shaft, and a second eccentric shaft. The first mounting base and the second mounting base are arranged circumferentially spaced along the casing. The first mounting base has a first mounting hole extending axially along the casing. The first eccentric shaft passes through the first mounting hole and extends out of the first mounting hole at one end toward the first boss. A first drive ring is disposed between the first boss and the first mounting base, and the inner side of the first drive ring abuts against the first eccentric shaft. The second mounting base has a second mounting hole extending axially along the casing. The second eccentric shaft passes through the second mounting hole and extends out of the second mounting hole at one end toward the second boss. The second drive ring is disposed between the second boss and the second mounting base, and the inner side of the second drive ring abuts against the second eccentric shaft.

[0015] In some embodiments, the self-aligning assembly includes a first pulley rotatably disposed on the first eccentric shaft and located between the first boss and the first mounting base, wherein the inner side of the first drive ring abuts against the outer peripheral surface of the first pulley; and / or

[0016] The second pulley is rotatably disposed on the second eccentric shaft and located between the second boss and the second mounting base, and the inner side of the second drive ring abuts against the outer peripheral surface of the second pulley.

[0017] In some embodiments, the self-aligning assembly includes a first mounting base, a first eccentric shaft, and a second eccentric shaft. The first mounting base includes a first mounting plate, a connecting plate, and a second mounting plate connected in sequence. The connecting plate extends axially along the housing. The first mounting plate is disposed at one end of the connecting plate near the second boss and extends radially away from the housing. The second mounting plate is disposed at one end of the connecting plate near the first boss and extends radially towards the housing. The first mounting plate has a first mounting hole, and the second mounting plate has a second mounting hole. The first eccentric shaft passes through the first mounting hole, with one end extending out of the first mounting hole toward the first boss. A first drive ring is disposed between the first boss and the first mounting base, and the inner side of the first drive ring abuts against the first eccentric shaft. The second eccentric shaft passes through the second mounting hole, with one end extending out of the second mounting hole toward the second boss. The second drive ring is disposed between the second boss and the second mounting base, and the inner side of the second drive ring abuts against the second eccentric shaft.

[0018] In some embodiments, the self-aligning assembly includes a first pulley rotatably disposed on the first eccentric shaft and located between the first boss and the first mounting plate, wherein the inner side of the first drive ring abuts against the outer peripheral surface of the first pulley; and / or

[0019] The second pulley is rotatably disposed on the second eccentric shaft and located between the second boss and the second mounting plate, and the inner side of the second drive ring abuts against the outer peripheral surface of the second pulley.

[0020] In some embodiments, the second boss has a first mounting hole on its sidewall adjacent to the first boss, and the first boss has a second mounting hole on its sidewall adjacent to the second boss. The first mounting hole and the second mounting hole are arranged radially spaced in the housing. The second mounting hole is adjacent to the housing relative to the first mounting hole. The self-aligning assembly includes a first eccentric shaft, a second eccentric shaft, a first pulley, and a second pulley. The first eccentric shaft passes through the first mounting hole and one end extends out of the first mounting hole. The first pulley is rotatably disposed on the first eccentric shaft. The inner side of the first drive ring abuts against the outer peripheral surface of the first pulley. The second eccentric shaft passes through the second mounting hole and one end extends out of the second mounting hole. The second pulley is rotatably disposed on the second eccentric shaft. The inner side of the second drive ring abuts against the outer peripheral surface of the second pulley.

[0021] In this embodiment of the invention, the compressor test specimen utilizes the mounting space between the first and second bosses to install a stator vane adjustment assembly, allowing the assembly to simultaneously adjust the stator vanes in two adjacent stator vane groups. Compared to the traditional independent distribution (i.e., only one stator vane adjustment mechanism is set between the first and second bosses to adjust the angle of the first or second stator vane), this invention employs a non-independent distributed stator vane adjustment mechanism arrangement, saving mounting space in the casing axial direction. Due to the saved axial mounting space, even after the compressor is scaled down to form the compressor test specimen, sufficient adjustable stages are still maintained, preserving the compressor's surge margin to adapt to different engine operating conditions. By maintaining more adjustable stages and improved surge margin, the test results of the compressor test specimen are optimized, ensuring optimal test performance. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the compressor test piece according to an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the installation of the still blade adjustment assembly according to the first embodiment of the present invention.

[0024] Figure 3 yes Figure 2 A schematic diagram of the structure of the first eccentric shaft.

[0025] Figure 4 yes Figure 2 The front view of the first eccentric axis.

[0026] Figure 5 This is a schematic diagram of the installation of the still blade adjustment assembly according to the second embodiment of the present invention.

[0027] Figure 6 This is a schematic diagram of the installation of the still blade adjustment assembly according to the third embodiment of the present invention.

[0028] Figure 7 This is a schematic diagram of the installation of the still blade adjustment assembly according to the fourth embodiment of the present invention.

[0029] Figure label:

[0030] 100. Compressor test piece; 1. Casing; 101. First boss; 102. Second boss; 2. First stator blade assembly; 201. First stator blade; 3. Second stator blade assembly; 301. Second stator blade; 4. Stator blade adjustment assembly; 401. First drive ring; 402. Second drive ring; 403. Self-aligning assembly; 4031. First mounting base; 40311. First mounting plate; 40312. Connecting plate; 40313. Second mounting plate; 4032. First eccentric shaft; 40321. First mounting section; 40322. Fixed section; 40323. Second mounting section; 4033. First pulley; 4034. Second pulley; 4035. Second mounting base; 4036. Second eccentric shaft. Detailed Implementation

[0031] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0032] like Figures 1 to 7 As shown, the compressor test piece 100 of this embodiment includes a casing 1, a first stator blade group 2, a second stator blade group 3, and a stator blade adjustment assembly 4. The outer circumferential surface of the casing 1 is provided with a first boss 101 and a second boss 102 arranged at intervals along its axial direction. The first stator blade group 2 is disposed on the first boss 101 and includes a plurality of first stator blades 201 arranged at intervals along the circumference of the casing 1. The second stator blade group 3 is disposed on the second boss 102 and includes a plurality of second stator blades 301 arranged at intervals along the circumference of the casing 1.

[0033] The stator vane adjustment assembly 4 is located outside the housing 1 and between the first boss 101 and the second boss 102. The stator vane adjustment assembly 4 includes a first drive ring 401 and a second drive ring 402. The first drive ring 401 and the second drive ring 402 are rotatably sleeved on the housing 1. The first drive ring 401 is connected to the first stator vane 201 for adjusting the angle of the first stator vane 201, and the second drive ring 402 is connected to the second stator vane 301 for adjusting the angle of the second stator vane 301.

[0034] In the compressor test piece 100 of this embodiment of the invention, during the test, the first stationary vane 201 is driven to rotate by rotating the first drive ring 401 to adjust the installation angle of the first stationary vane 201, and the second stationary vane 301 is driven to rotate by rotating the second drive ring 402 to adjust the installation angle of the second stationary vane 301.

[0035] Therefore, the compressor test piece 100 of this embodiment utilizes the mounting space between the first boss 101 and the second boss 102 to install the stator vane adjustment assembly 4, allowing the stator vane adjustment assembly 4 to simultaneously adjust the stator vanes in two adjacent stator vane groups. Compared to the traditional independent distribution (i.e., only one stator vane adjustment mechanism is provided between the first boss 101 and the second boss 102 to adjust the angle of the first or second stator vane 301), this invention adopts a non-independent distributed stator vane adjustment mechanism arrangement, which can save the axial mounting space of the casing 1. Due to the saved axial mounting space, even after the compressor is scaled down to form the compressor test piece 100, sufficient adjustable stages can still be maintained, preserving the compressor surge margin to adapt to different engine operating conditions. Because more adjustable stages and improved surge margin are maintained, the test effect of the compressor test piece 100 is optimized, ensuring the test results.

[0036] In some embodiments, as Figure 2 As shown, the stator blade adjustment assembly 4 includes a self-aligning assembly 403, which is connected to the first drive ring 401 and the second drive ring 402 and is used to adjust the concentricity of the first drive ring 401 and the second drive ring 402 with the rotor.

[0037] By adjusting the self-aligning assembly 403, the first drive ring 401 and the second drive ring 402 can maintain the correct concentricity with the rotor. This allows for more precise control of the airflow direction and efficiency when adjusting the stator vane angle. Maintaining concentricity reduces mechanical wear caused by eccentric motion, thereby extending the service life of the compressor test piece 100. The self-aligning assembly 403 also helps improve the stability of the entire compressor system, as incorrect concentricity can cause system vibration, which in turn affects engine performance. By precisely controlling the stator vane angle and concentricity, compressor performance can be optimized, its efficiency improved, energy consumption reduced, and the risk of surge lowered.

[0038] In the first embodiment, as Figure 2As shown, the self-aligning assembly 403 includes a first mounting base 4031 and a first eccentric shaft 4032. The first mounting base 4031 has a first mounting hole extending axially along the casing 1, and the first eccentric shaft 4032 passes through the first mounting hole with both ends extending out of the first mounting hole. A first drive ring 401 and a second drive ring 402 are disposed on both sides of the first mounting base 4031 axially along the casing 1. The inner side of the first drive ring 401 abuts against one end of the eccentric shaft, and the inner side of the second drive ring 402 abuts against the other end of the eccentric shaft.

[0039] In other words, the first drive ring 401 and the second drive ring 402 share a first mounting base 4031 and a first eccentric shaft 4032. Specifically, when adjusting the concentricity between the first drive ring 401 and the second drive ring 402 and the rotor, the first eccentric shaft 4032 is rotated first. This changes the contact position between the two ends of the first eccentric shaft 4032 and the inner sides of the first drive ring 401 and the second drive ring 402, thereby adjusting the radial position of the first drive ring 401 and the second drive ring 402 and achieving concentricity adjustment with the rotor. After adjustment, the first eccentric shaft 4032 is fixed. For example, locking nuts are provided at both ends of the first eccentric shaft 4032 and threadedly connected to the first eccentric shaft 4032, thereby fixing the first eccentric shaft 4032 onto the first mounting base 4031. After the concentricity adjustment is completed, the angles of the first stator vane 201 and the second stator vane 301 can be further adjusted by rotating the first drive ring 401 and the second drive ring 402 to adapt to different engine operating conditions.

[0040] Therefore, the arrangement of the first eccentric shaft 4032 allows for simultaneous fine-tuning of the first drive ring 401 and the second drive ring 402, thereby achieving more precise concentricity adjustment and improving the accuracy of the stator vane adjustment. Furthermore, the first drive ring 401 and the second drive ring 402 share the first mounting base 4031 and the first eccentric shaft 4032, making the self-aligning assembly 403 compact and saving axial upward space in the casing 1. This is particularly important for the scaled-down compressor test piece 100 with limited space.

[0041] Specifically, such as Figure 1 As shown, during the experiment, the distance L1 between the first boss 101 and the second boss 102 and the distance L2 between the first boss 101 and the self-aligning assembly 403 can be measured. By comparing the size of L1 and L2, if L1 is greater than twice L2, the solution in the first embodiment can be adopted.

[0042] In the first embodiment, as Figures 2 to 4As shown, the first eccentric shaft 4032 includes a first mounting section 40321, a fixed section 40322, and a second mounting section 40323 connected in sequence. The fixed section 40322 passes through a mounting hole, while the first mounting section 40321 and the second mounting section 40323 extend out of the first mounting hole. The axes of the first mounting section 40321 and the second mounting section 40323 are eccentrically positioned relative to the axis of the fixed section 40322. The inner side of the first drive ring 401 abuts against the first mounting section 40321, and the inner side of the second drive ring 402 abuts against the second mounting section 40323. In a projection plane orthogonal to the central axis of the fixed section 40322, the line connecting the central axis of the first mounting section 40321 and the central axis of the fixed section 40322, and the line connecting the central axis of the second mounting section 40323 and the central axis of the fixed section 40322, form an angle. For example, the angle is an acute angle, a right angle, or an obtuse angle. Preferably, as shown... Figure 4 As shown, the included angle is a right angle.

[0043] The axes of the first mounting section 40321 and the second mounting section 40323 are eccentrically positioned relative to the axis of the fixed section 40322. When the first eccentric shaft 4032 rotates, the first mounting section 40321 and the second mounting section 40323 will move radially relative to the fixed section 40322. By rotating the first eccentric shaft 4032, the positions of the first mounting section 40321 and the second mounting section 40323 will change, thereby pushing the first drive ring 401 and the second drive ring 402 to move outward, so as to adjust the concentricity of the first drive ring 401 and the second drive ring 402 with the rotor. After the concentricity adjustment is completed, the angles of the first stator vane 201 and the second stator vane 301 can be adjusted by further rotating the first drive ring 401 and the second drive ring 402 to adapt to different working conditions. Since the line connecting the central axis of the first mounting section 40321 and the central axis of the fixed section 40322, and the line connecting the central axis of the second mounting section 40323 and the central axis of the fixed section 40322, are set at an angle within the projection plane orthogonal to the central axis of the fixed section 40322, the concentricity of the first drive ring 401 and the second drive ring 402 can be finely adjusted, thereby improving the accuracy of the stator vane adjustment and helping to optimize the compressor's working performance.

[0044] In the first embodiment, as Figure 2 As shown, the self-aligning assembly 403 includes a first pulley 4033 and a second pulley 4034. The first pulley 4033 is rotatably mounted on the first mounting section 40321, and the inner side of the first drive ring 401 abuts against the outer peripheral surface of the first pulley 4033. The second pulley 4034 is rotatably mounted on the second mounting section 40323, and the inner side of the second drive ring 402 abuts against the outer peripheral surface of the second pulley 4034.

[0045] When it is necessary to adjust the concentricity of the first drive ring 401, since the first pulley 4033 is rotatably mounted on the first mounting section 40321, the introduction of the first pulley 4033 can reduce the direct contact friction of the first drive ring 401 when rotating the first drive ring 401, thereby reducing wear and extending the service life of the component. The first pulley 4033 can also improve the efficiency and response speed of the concentricity adjustment of the first drive ring 401, because the first drive ring 401 can rotate more easily, thereby transmitting torque more quickly.

[0046] Similarly, when it is necessary to adjust the concentricity of the second drive ring 402, since the second pulley 4034 is rotatably mounted on the second mounting section 40323, the introduction of the second pulley 4034 can reduce the direct contact friction of the second drive ring 402 when rotating it, thereby reducing wear and extending the service life of the component. The second pulley 4034 can also improve the efficiency and response speed of the concentricity adjustment of the second drive ring 402, because the second drive ring 402 can rotate more easily, thus transmitting torque more quickly.

[0047] In the second embodiment, as Figure 5 As shown, the self-aligning assembly 403 includes a first mounting base 4031, a second mounting base 4035, a first eccentric shaft 4032, and a second eccentric shaft 4036. The first mounting base 4031 and the second mounting base 4035 are arranged circumferentially around the casing 1. The first mounting base 4031 has a first mounting hole extending axially along the casing 1. The first eccentric shaft 4032 passes through the first mounting hole and extends out of the first mounting hole with one end facing the first boss 101. A first drive ring 401 is disposed between the first boss 101 and the first mounting base 4031, and the inner side of the first drive ring 401 abuts against the first eccentric shaft 4032. The second mounting base 4035 has a second mounting hole extending axially along the casing 1. The second eccentric shaft 4036 passes through the second mounting hole and extends out of the second mounting hole at one end toward the second boss 102. The second drive ring 402 is disposed between the second boss 102 and the second mounting base 4035. The inner side of the second drive ring 402 abuts against the second eccentric shaft 4036.

[0048] In other words, the first drive ring 401 is provided with a first mounting base 4031 and a first eccentric shaft 4032 to adjust the concentricity between the first drive ring 401 and the rotor, and the second drive ring 402 is provided with a second mounting base 4035 and a second eccentric shaft 4036 to adjust the concentricity between the second drive ring 402 and the rotor.

[0049] Specifically, when adjusting the concentricity between the first drive ring 401 and the rotor, the contact position between the first eccentric shaft 4032 and the inner side of the first drive ring 401 is changed by rotating the first eccentric shaft 4032, thereby adjusting the radial position of the first drive ring 401 and achieving concentricity adjustment with the rotor. After adjustment, the first eccentric shaft 4032 is fixed, for example, by using locking nuts at both ends of the first eccentric shaft 4032 threadedly connected to it. After concentricity adjustment, the angle of the first stator vane 201 can be further adjusted by rotating the first drive ring 401 to adapt to different engine operating conditions.

[0050] Similarly, when adjusting the concentricity between the second drive ring 402 and the rotor, the contact position between the second eccentric shaft 4036 and the inner side of the second drive ring 402 can be changed by rotating the second eccentric shaft 4036, thereby adjusting the radial position of the second drive ring 402 and achieving concentricity adjustment with the rotor. After adjustment, the second eccentric shaft 4036 is then fixed, for example, by using locking nuts at both ends of the second eccentric shaft 4036 and threaded connections to it. After concentricity adjustment, the angle of the second stator vane 301 can be further adjusted by rotating the second drive ring 402 to adapt to different engine operating conditions.

[0051] By arranging different mounting seats at circumferential intervals in the housing 1 for mounting the eccentric shaft, the self-aligning components 403 of the first drive ring 401 and the second drive ring 402 can be installed independently, which facilitates installation, saves axial space in the housing 1, and improves assembly efficiency. Furthermore, during adjustment, the two components do not interfere with each other, which helps improve adjustment accuracy.

[0052] In the second embodiment, as Figure 5 As shown, the self-aligning assembly 403 includes a first pulley 4033, which is rotatably disposed on the first eccentric shaft 4032 and located between the first boss 101 and the first mounting base 4031. The inner side of the first drive ring 401 abuts against the outer peripheral surface of the first pulley 4033. A second pulley 4034 is rotatably disposed on the second eccentric shaft 4036 and located between the second boss 102 and the second mounting base 4035. The inner side of the second drive ring 402 abuts against the outer peripheral surface of the second pulley 4034.

[0053] When it is necessary to adjust the concentricity of the first drive ring 401, the introduction of the first pulley 4033 can reduce the direct contact friction of the first drive ring 401 when rotating the first drive ring 401, thereby reducing wear and extending the service life of the component. The first pulley 4033 can also improve the efficiency and response speed of the concentricity adjustment of the first drive ring 401, because the first drive ring 401 can rotate more easily, thereby transmitting torque more quickly.

[0054] Similarly, when it is necessary to adjust the concentricity of the second drive ring 402, the introduction of the second pulley 4034 can reduce the direct contact friction of the second drive ring 402 when rotating it, thereby reducing wear and extending the service life of the component. The second pulley 4034 can also improve the efficiency and response speed of the concentricity adjustment of the second drive ring 402, because the second drive ring 402 can rotate more easily, thus transmitting torque more quickly.

[0055] Specifically, such as Figure 1 As shown, during the experiment, the distance L1 between the first boss 101 and the second boss 102 and the distance L2 between the first boss 101 and the self-aligning assembly 403 can be measured. By comparing the size of L1 and L2, if L1 is greater than twice L2, the solution in the second embodiment can be adopted.

[0056] In the third embodiment, as Figure 6 As shown, the self-aligning assembly 403 includes a first mounting base 4031, a first eccentric shaft 4032, and a second eccentric shaft 4036. The first mounting base 4031 includes a first mounting plate 40311, a connecting plate 40312, and a second mounting plate 40313 connected in sequence. The connecting plate 40312 extends axially along the housing 1. The first mounting plate 40311 is located at one end of the connecting plate 40312 near the second boss 102 and extends radially away from the housing 1. The second mounting plate 40313 is located at one end of the connecting plate 40312 near the first boss 101 and extends radially towards the housing 1. A first mounting plate 40311 has a first mounting hole, and a second mounting plate 40313 has a second mounting hole. A first eccentric shaft 4032 passes through the first mounting hole and extends out of the first mounting hole with one end facing the first boss 101. A first drive ring 401 is located between the first boss 101 and the first mounting seat 4031, and the inner side of the first drive ring 401 abuts against the first eccentric shaft 4032. A second eccentric shaft 4036 passes through the second mounting hole and extends out of the second mounting hole with one end facing the second boss 102. A second drive ring 402 is located between the second boss 102 and the second mounting seat 4035, and the inner side of the second drive ring 402 abuts against the second eccentric shaft 4036.

[0057] In other words, the first drive ring 401 and the second drive ring 402 share a first mounting base 4031 for mounting the first eccentric shaft 4032 and the second eccentric shaft 4036. At the same time, the first eccentric shaft 4032 and the second eccentric shaft 4036 are arranged at intervals in the radial direction of the housing 1. That is to say, the first drive ring 401 and the second drive ring 402 are also arranged at intervals in the radial direction of the housing 1 to save the installation space in the axial direction of the housing 1.

[0058] Specifically, when adjusting the concentricity between the first drive ring 401 and the rotor, the contact position between the first eccentric shaft 4032 and the inner side of the first drive ring 401 is changed by rotating the first eccentric shaft 4032, thereby adjusting the radial position of the first drive ring 401 and achieving concentricity adjustment with the rotor. After adjustment, the first eccentric shaft 4032 is fixed, for example, by using locking nuts at both ends of the first eccentric shaft 4032 threadedly connected to it. After concentricity adjustment, the angle of the first stator vane 201 can be further adjusted by rotating the first drive ring 401 to adapt to different engine operating conditions.

[0059] Similarly, when adjusting the concentricity between the second drive ring 402 and the rotor, the contact position between the second eccentric shaft 4036 and the inner side of the second drive ring 402 can be changed by rotating the second eccentric shaft 4036, thereby adjusting the radial position of the second drive ring 402 and achieving concentricity adjustment with the rotor. After adjustment, the second eccentric shaft 4036 is then fixed, for example, by using locking nuts at both ends of the second eccentric shaft 4036 and threaded connections to it. After concentricity adjustment, the angle of the second stator vane 301 can be further adjusted by rotating the second drive ring 402 to adapt to different engine operating conditions.

[0060] By setting a first mounting base 4031 and mounting a first eccentric shaft 4032 and a second eccentric shaft 4036 arranged at intervals in the radial direction of the housing 1, the self-aligning assembly 403 has a compact structure, saving space in the axial direction of the housing 1. Furthermore, the self-aligning assemblies 403 for the first drive ring 401 and the second drive ring 402 can be installed independently, facilitating installation and improving assembly efficiency. Simultaneously, during adjustment, the two do not interfere with each other, which helps improve adjustment accuracy.

[0061] Specifically, such as Figure 1 and Figure 6As shown, during the experiment, the distance L1 between the first boss 101 and the second boss 102 and the distance L2 between the first boss 101 and the self-aligning assembly 403 can be measured. By comparing the size of L1 and L2, the inner diameter P of the first drive ring 401 and the outer diameter Q of the second drive ring 402, if L1 is greater than L2 and less than twice L2, and P is greater than Q, then the solution in the third embodiment can be adopted.

[0062] In some embodiments, the self-aligning assembly 403 includes a first pulley 4033 and a second pulley 4034. The first pulley 4033 is rotatably disposed on the first eccentric shaft 4032 and located between the first boss 101 and the first mounting plate 40311. The inner side of the first drive ring 401 abuts against the outer peripheral surface of the first pulley 4033. The second pulley 4034 is rotatably disposed on the second eccentric shaft 4036 and located between the second boss 102 and the second mounting plate 40313. The inner side of the second drive ring 402 abuts against the outer peripheral surface of the second pulley 4034.

[0063] When it is necessary to adjust the concentricity of the first drive ring 401, the introduction of the first pulley 4033 can reduce the direct contact friction of the first drive ring 401 when rotating the first drive ring 401, thereby reducing wear and extending the service life of the component. The first pulley 4033 can also improve the efficiency and response speed of the concentricity adjustment of the first drive ring 401, because the first drive ring 401 can rotate more easily, thereby transmitting torque more quickly.

[0064] Similarly, when it is necessary to adjust the concentricity of the second drive ring 402, the introduction of the second pulley 4034 can reduce the direct contact friction of the second drive ring 402 when rotating it, thereby reducing wear and extending the service life of the component. The second pulley 4034 can also improve the efficiency and response speed of the concentricity adjustment of the second drive ring 402, because the second drive ring 402 can rotate more easily, thus transmitting torque more quickly.

[0065] In the fourth embodiment, as Figure 7As shown, the second boss 102 has a first mounting hole on its side wall adjacent to the first boss 101, and the first boss 101 has a second mounting hole on its side wall adjacent to the second boss 102. The first mounting hole and the second mounting hole are arranged radially spaced apart in the housing 1, and the second mounting hole is adjacent to the housing 1 relative to the first mounting hole. The self-aligning assembly 403 includes a first eccentric shaft 4032, a second eccentric shaft 4036, a first pulley 4033, and a second pulley 4034. The first eccentric shaft 4032 passes through the first mounting hole and one end extends out of the first mounting hole. The first pulley 4033 is rotatably disposed on the first eccentric shaft 4032, and the inner side of the first drive ring 401 abuts against the outer peripheral surface of the first pulley 4033. The second eccentric shaft 4036 passes through the second mounting hole and one end extends out of the second mounting hole. The second pulley 4034 is rotatably mounted on the second eccentric shaft 4036. The inner side of the second drive ring 402 abuts against the outer circumferential surface of the second pulley 4034.

[0066] In other words, the self-aligning assembly 403 eliminates the mounting base component and uses the first boss 101 and the second boss 102 on the housing 1 as the mounting base for the first eccentric shaft 4032 and the second eccentric shaft 4036, thereby reducing the number of parts, saving space in the axial direction of the housing 1, and improving the structural compactness.

[0067] When adjusting the concentricity between the first drive ring 401 and the rotor, the contact position between the first eccentric shaft 4032 and the inner side of the first drive ring 401 is changed by rotating the first eccentric shaft 4032, thereby adjusting the radial position of the first drive ring 401 and achieving concentricity adjustment with the rotor. After adjustment, the first eccentric shaft 4032 is fixed, for example, by using locking nuts at both ends of the first eccentric shaft 4032 that are threadedly connected to it. After concentricity adjustment, the angle of the first stator vane 201 can be further adjusted by rotating the first drive ring 401 to adapt to different engine operating conditions.

[0068] Similarly, when adjusting the concentricity between the second drive ring 402 and the rotor, the contact position between the second eccentric shaft 4036 and the inner side of the second drive ring 402 can be changed by rotating the second eccentric shaft 4036, thereby adjusting the radial position of the second drive ring 402 and achieving concentricity adjustment with the rotor. After adjustment, the second eccentric shaft 4036 is then fixed, for example, by using locking nuts at both ends of the second eccentric shaft 4036 and threaded connections to it. After concentricity adjustment, the angle of the second stator vane 301 can be further adjusted by rotating the second drive ring 402 to adapt to different engine operating conditions.

[0069] Specifically, such as Figure 1 and Figure 6 As shown, during the experiment, the distance L1 between the first boss 101 and the second boss 102 and the distance L2 between the first boss 101 and the self-aligning assembly 403 can be measured. By comparing the size of L1 and L2, the inner diameter P of the first drive ring 401 and the outer diameter Q of the second drive ring 402, if L1 is greater than L2 and less than twice L2, and P is less than Q, then the mounting base structure can be eliminated, and the solution in the fourth embodiment can be adopted.

[0070] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0071] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0072] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0073] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0074] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0075] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A compressor test piece, characterized in that, include: The casing has a first boss and a second boss arranged at intervals along its axial direction on its outer peripheral surface. A first stator blade group and a second stator blade group, wherein the first stator blade group is disposed on the first boss and includes a plurality of first stator blades arranged circumferentially spaced along the casing; and the second stator blade group is disposed on the second boss and includes a plurality of second stator blades arranged circumferentially spaced along the casing. A stator vane adjustment assembly is disposed outside the housing and between the first boss and the second boss. The stator vane adjustment assembly includes a first drive ring and a second drive ring, which are rotatably sleeved on the housing. The first drive ring is connected to the first stator vane for adjusting the angle of the first stator vane, and the second drive ring is connected to the second stator vane for adjusting the angle of the second stator vane.

2. The compressor test piece according to claim 1, characterized in that, The stator blade adjustment assembly includes a self-aligning component, which is connected to the first drive ring and the second drive ring and is used to adjust the concentricity of the first drive ring and the second drive ring with the rotor.

3. The compressor test piece according to claim 2, characterized in that, The self-aligning assembly includes a first mounting base and a first eccentric shaft. The first mounting base has a first mounting hole extending axially along the casing. The first eccentric shaft passes through the first mounting hole and extends out of the first mounting hole at both ends. A first drive ring and a second drive ring are disposed on both sides of the first mounting base axially along the casing. The inner side of the first drive ring abuts against one end of the eccentric shaft, and the inner side of the second drive ring abuts against the other end of the eccentric shaft.

4. The compressor test piece according to claim 3, characterized in that, The first eccentric shaft includes a first mounting section, a fixed section, and a second mounting section connected in sequence. The fixed section passes through the mounting hole, and the first mounting section and the second mounting section extend out of the first mounting hole. The axes of the first mounting section and the second mounting section are eccentrically arranged relative to the axis of the fixed section. The inner side of the first drive ring abuts against the first mounting section, and the inner side of the second drive ring abuts against the second mounting section. In a projection plane orthogonal to the central axis of the fixed section, the line connecting the central axis of the first mounting section and the central axis of the fixed section and the line connecting the central axis of the second mounting section and the central axis of the fixed section form an angle.

5. The compressor test piece according to claim 4, characterized in that, The self-aligning component includes: A first pulley, rotatably mounted on the first mounting section, wherein the inner side of the first drive ring abuts against the outer peripheral surface of the first pulley; and / or The second pulley is rotatably mounted on the second mounting section, and the inner side of the second drive ring abuts against the outer circumferential surface of the second pulley.

6. The compressor test piece according to claim 2, characterized in that, The self-aligning assembly includes a first mounting base, a second mounting base, a first eccentric shaft, and a second eccentric shaft. The first mounting base and the second mounting base are arranged circumferentially spaced along the casing. The first mounting base has a first mounting hole extending axially along the casing. The first eccentric shaft passes through the first mounting hole and extends out of the first mounting hole at one end toward the first boss. A first drive ring is disposed between the first boss and the first mounting base, and the inner side of the first drive ring abuts against the first eccentric shaft. The second mounting base has a second mounting hole extending axially along the casing. The second eccentric shaft passes through the second mounting hole and extends out of the second mounting hole at one end toward the second boss. The second drive ring is disposed between the second boss and the second mounting base, and the inner side of the second drive ring abuts against the second eccentric shaft.

7. The compressor test piece according to claim 6, characterized in that, The self-aligning assembly includes a first pulley, which is rotatably disposed on the first eccentric shaft and located between the first boss and the first mounting base. The inner side of the first drive ring abuts against the outer peripheral surface of the first pulley; and / or The second pulley is rotatably disposed on the second eccentric shaft and located between the second boss and the second mounting base, and the inner side of the second drive ring abuts against the outer peripheral surface of the second pulley.

8. The compressor test piece according to claim 2, characterized in that, The self-aligning assembly includes a first mounting base, a first eccentric shaft, and a second eccentric shaft. The first mounting base includes a first mounting plate, a connecting plate, and a second mounting plate connected in sequence. The connecting plate extends axially along the housing. The first mounting plate is located at one end of the connecting plate near the second boss and extends radially away from the housing. The second mounting plate is located at one end of the connecting plate near the first boss and extends radially towards the housing. The first mounting plate has a first mounting hole, and the second mounting plate has a second mounting hole. The first eccentric shaft passes through the first mounting hole, with one end extending out of the first mounting hole towards the first boss. A first drive ring is located between the first boss and the first mounting base, with its inner side abutting against the first eccentric shaft. The second eccentric shaft passes through the second mounting hole, with one end extending out of the second mounting hole towards the second boss. The second drive ring is located between the second boss and the second mounting base, with its inner side abutting against the second eccentric shaft.

9. The compressor test piece according to claim 8, characterized in that, The self-aligning assembly includes a first pulley, which is rotatably mounted on the first eccentric shaft and located between the first boss and the first mounting plate. The inner side of the first drive ring abuts against the outer peripheral surface of the first pulley; and / or The second pulley is rotatably disposed on the second eccentric shaft and located between the second boss and the second mounting plate, and the inner side of the second drive ring abuts against the outer peripheral surface of the second pulley.

10. The compressor test piece according to claim 2, characterized in that, The second boss has a first mounting hole on its side wall adjacent to the first boss, and the first boss has a second mounting hole on its side wall adjacent to the second boss. The first mounting hole and the second mounting hole are arranged radially spaced in the casing. The second mounting hole is adjacent to the casing relative to the first mounting hole. The self-aligning assembly includes a first eccentric shaft, a second eccentric shaft, a first pulley, and a second pulley. The first eccentric shaft passes through the first mounting hole and one end extends out of the first mounting hole. The first pulley is rotatably mounted on the first eccentric shaft. The inner side of the first drive ring abuts against the outer circumferential surface of the first pulley. The second eccentric shaft passes through the second mounting hole and one end extends out of the second mounting hole. The second pulley is rotatably mounted on the second eccentric shaft. The inner side of the second drive ring abuts against the outer circumferential surface of the second pulley.

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