A super large size axial flow compressor stationary vane adjusting ring support seat

Abstract

This application provides a support base for the stator vane adjusting ring of an ultra-large axial compressor. The support base is disposed between the housing and the adjusting ring to support the adjusting ring. The support base includes: a support frame disposed on the housing, with rollers disposed on the support frame and the rollers contacting the adjusting ring; and a fixing member passing through the support frame and connected to the housing to assemble the support frame onto the housing. This application, through the inclusion of a buffer assembly, allows the buffer assembly to undergo adaptive deformation under pressure when the housing expands. This deformation, combined with a buffer gap, absorbs and offsets the expansion, preventing excessive supporting stress due to thermal expansion differences. This effectively protects the thin-walled housing and adjusting ring of the ultra-large axial compressor from damage, while maintaining the concentricity of the adjusting ring and the housing.

Description

Technical Field

[0001] This application belongs to the field of compressor technology, specifically relating to a support base for a stator vane adjusting ring of an ultra-large axial compressor. Background Technology

[0002] The stator vane adjusting ring support is an important structure in axial compressors used to support the stator vane adjusting ring, and it is usually arranged between the compressor casing and the stator vane adjusting ring.

[0003] Because the stator vane adjusting ring is located outside the casing and is typically in a normal temperature environment during operation, while the casing is in direct contact with the compressed medium and is at a higher temperature, a significant temperature difference exists between the casing and the stator vane adjusting ring. This temperature difference leads to inconsistent thermal expansion between the casing and the stator vane adjusting ring; the stator vane adjusting ring experiences less thermal expansion deformation, while the casing experiences greater thermal expansion deformation. This, in turn, creates an expansion difference between the casing, the adjusting ring, and the support base. In ultra-large axial compressors, where the casing diameter can reach 10 meters, the expansion difference between the casing and the adjusting ring in the diametrical direction can reach 12 mm (6 mm in the radial direction). This generates enormous support stress. To achieve lightweight design, ultra-large axial compressors often employ thin-walled structures for the casing and adjusting ring, making it difficult to withstand such enormous support stress, which can easily lead to casing deformation and structural damage. Summary of the Invention

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

[0005] To address the aforementioned problems, this application provides a support base for a stator vane adjusting ring of an ultra-large axial compressor. The support base is disposed between the housing and the adjusting ring, and is used to support the adjusting ring. The support base includes: A support frame is mounted on the housing, and rollers are mounted on the support frame, with the rollers contacting the adjusting ring. A fastener passes through the support frame and connects to the housing, for assembling the support frame onto the housing; A buffer assembly is disposed between the housing and the support frame, and is located on both sides of the fixing member; The housing and the bottom of the support frame have a buffer gap. When the housing expands due to heat, the buffer assembly deforms to offset the expansion of the housing.

[0006] Optionally, the buffer component includes: An upper fixing plate is connected to the bottom of the support frame; A lower fixing plate, which is connected to the housing; Damping springs, a plurality of the damping springs are disposed between the upper fixed plate and the lower fixed plate.

[0007] Optionally, the upper fixing plate is provided with a first mounting groove, and the lower fixing plate is provided with a second mounting groove at a matching position with the first mounting groove. The first end of the damping spring is disposed in the first mounting groove, and the second end of the damping spring is disposed in the second mounting groove.

[0008] Optionally, the damping spring is made of metal or rubber.

[0009] Optionally, the support frame includes a base plate and a support plate, the support plate being disposed on the base plate, the rollers being disposed on the support plate, and the upper fixing plate being disposed on the base plate.

[0010] Optionally, the fastener includes: A guide pin, comprising a sliding section and a threaded section, a fixing hole is provided on the base plate, a fixing groove is provided on the housing, and the sliding section of the guide pin passes through the fixing hole and is disposed in the fixing groove; A locking element, which is located on the base plate and connected to the threaded section of the guide pin.

[0011] Optionally, the locking element is a locking nut.

[0012] Optionally, the fastener further includes a bushing, which is fitted onto the sliding section and located within the fixing hole.

[0013] Optionally, the number of support seats is multiple, arranged in a ring-shaped interval along the outer circumference of the housing.

[0014] Optionally, adjustment holes are provided on the base plate and on both sides of the fixing member.

[0015] Beneficial effects The embodiment of the present invention provides a support base for the stator adjustment ring of an ultra-large axial compressor. By setting a buffer component, when the casing expands, the buffer component undergoes adaptive deformation under pressure. The buffer gap absorbs and offsets the expansion, avoiding excessive support stress due to thermal expansion difference. This effectively protects the thin-walled casing and adjustment ring of the ultra-large axial compressor from damage, while maintaining the concentricity of the adjustment ring and casing. Attached Figure Description

[0016] Figure 1 This is a front sectional view of the present invention; Figure 2 This is a side sectional view of the present invention; Figure 3 This is a structural diagram of the buffer component of the present invention.

[0017] The reference numerals in the attached figures are as follows: 1. Housing; 2. Support frame; 21. Base plate; 22. Support plate; 3. Roller; 4. Fixing component; 41. Guide pin; 42. Locking component; 43. Bushing; 5. Buffer assembly; 51. Upper fixing plate; 52. Lower fixing plate; 53. Damping spring; 6. Buffer gap; 7. Adjustment hole. Detailed Implementation

[0018] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0019] 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 one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] In this application, unless otherwise expressly 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 connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0022] See also Figure 1-3 As shown, according to an embodiment of this application, a support base for a stator vane adjusting ring of an ultra-large axial compressor is provided. The support base is disposed between the housing 1 and the adjusting ring, and is used to support the adjusting ring. The support base includes: A support frame 2 is mounted on the housing 1, and a roller 3 is mounted on the support frame 2, the roller 3 being in contact with the adjusting ring; The fastener 4 passes through the support frame 2 and is connected to the housing 1, and is used to assemble the support frame 2 onto the housing 1; A buffer assembly 5 is disposed between the housing 1 and the support frame 2, and is located on both sides of the fixing member 4; The housing 1 and the bottom of the support frame 2 are provided with a buffer gap 6. When the housing 1 is heated and expands, the buffer assembly 5 deforms to offset the expansion of the housing 1.

[0023] In the embodiments of this application, a support seat for the stator vane adjusting ring of an ultra-large axial compressor is disposed between the housing 11 and the adjusting ring. The adjusting ring is sleeved on the outside of the housing 1, and the support seat is installed between the housing 1 and the adjusting ring to support the adjusting ring. The support seat includes a support frame 2, rollers 3, a fixing member 4, a buffer assembly 5, and a buffer gap 6. The support frame 2 is disposed on the housing 1, and the rollers 3 disposed on the support frame 2 contact the inner circumference of the adjusting ring to achieve stable support for the adjusting ring and to achieve smooth sliding of the adjusting ring relative to the housing 1. The fixing member 4 passes through the support frame 2 and is connected to the housing 1 to securely assemble the support frame 2 onto the housing 1, thereby improving the reliability of the support structure. The buffer assembly 5 is disposed between the housing 1 and the support frame 2 and is located on both sides of the fixing member 4. There is a buffer gap 6 between the bottom of the housing 1 and the support frame 2. When the housing 1 is heated and expands, the buffer assembly 5 deforms to offset the expansion of the housing 1, avoiding damage to the housing 1 when it is heated and expands during use, and further achieving stable support for the adjusting ring.

[0024] It should be noted that during the operation of the ultra-large axial compressor, the casing 1 will undergo thermal expansion due to the increase in internal medium temperature, while the regulating ring will expand less due to its ambient temperature, creating an expansion difference between the two. At this time, the displacement generated by the expansion of casing 1 can act on the buffer assembly 5. The buffer assembly 5 undergoes adaptive deformation under pressure, which, together with the buffer gap 6, absorbs and offsets the expansion, preventing excessive supporting stress due to the thermal expansion difference and effectively protecting the thin-walled casing 1 and regulating ring of the ultra-large axial compressor from damage.

[0025] It is understandable that the symmetrical arrangement of the buffer assembly 5 on both sides of the fixing member 4 can make the support frame 2 bear the force evenly and avoid local stress concentration. At the same time, the buffer gap 6 provides space for the deformation of the buffer assembly 5, avoiding rigid compression between the casing 1 and the support frame 2 when the casing 1 expands, thus improving safety.

[0026] Understandably, the contact between roller 3 and the inner circumferential surface of the adjusting ring reduces the frictional resistance when the adjusting ring slides, prevents the adjusting ring from getting stuck, and ensures the normal operation of the stationary vane adjusting mechanism.

[0027] Understandably, there are multiple support bases arranged in a ring at uniform intervals along the outer circumference of the housing 1, which further improves the concentricity of the adjusting ring and the housing 11, makes the force on the adjusting ring more balanced, and enhances the overall stability of the support structure.

[0028] According to some embodiments of this application, the buffer component 5 includes: Upper fixing plate 51, which is connected to the bottom of the support frame 2; The lower fixing plate 52 is connected to the housing 1; Damping springs 53, a plurality of the damping springs 53 are disposed between the upper fixed plate 51 and the lower fixed plate 52.

[0029] The damping spring 53 is made of metal or rubber.

[0030] In this embodiment, the buffer assembly 5 includes an upper fixed plate 51, a lower fixed plate 52, and damping springs 53. The upper fixed plate 51 is connected to the bottom of the support frame 2, and the lower fixed plate 52 is connected to the housing 1. Multiple damping springs 53 are disposed between the upper fixed plate 51 and the lower fixed plate 52, so that the upper fixed plate 51 and the lower fixed plate 52 can limit and fix the damping springs 53, ensuring that the damping springs 53 are stably assembled between the housing 1 and the support frame 2. Furthermore, the arrangement of multiple damping springs 53 can disperse the compressive force generated by the expansion of the housing 1, avoid damage to a single damping spring 53 due to stress concentration, and extend the service life of the buffer assembly 5. The damping springs 53 offset the expansion of the housing 1 after heating through their own compression deformation, thereby reducing the support stress caused by the thermal expansion difference between the housing 1 and the adjusting ring. It eliminates the need for a complex buffer structure, thus simplifying the overall structure of the buffer assembly 5, reducing manufacturing costs, and adapting to the thin-walled structure design of ultra-large axial flow compressors, reducing the space occupied by the buffer assembly 5 between the housing 1 and the support frame 2.

[0031] Understandably, the damping spring 53 is made of metal or rubber, which can provide cushioning while enhancing its structural strength.

[0032] Understandably, there are four damping springs 53, which are symmetrically installed in pairs between the upper fixed plate 51 and the lower fixed plate 52 to achieve more stable buffering.

[0033] According to some embodiments of this application, the upper fixing plate 51 is provided with a first mounting groove, the lower fixing plate 52 is provided with a second mounting groove at a matching position with the first mounting groove, the first end of the damping spring 53 is disposed in the first mounting groove, and the second end of the damping spring 53 is disposed in the second mounting groove.

[0034] In this embodiment, a first mounting groove is provided on the upper fixing plate 51, and a second mounting groove is provided on the lower fixing plate 52 at a matching position with the first mounting groove. The number of the first mounting groove and the second mounting groove match the number of damping springs 53. The first end of the damping spring 53 is disposed in the first mounting groove, and the second end of the damping spring 53 is disposed in the second mounting groove, so that the first mounting groove and the second mounting groove can limit the two ends of the damping spring 53, ensuring that the damping spring 53 is stably assembled between the housing 1 and the support frame 2, avoiding the damping spring 53 from shifting or misaligning during the deformation process under force, and ensuring the stability of the buffering effect.

[0035] Understandably, the multiple damping springs 53 are matched and matched in the first and second mounting slots, which can disperse the compressive force generated by the expansion of the housing 1, prevent the individual damping springs 53 from being damaged due to stress concentration, and thus extend the service life of the buffer assembly 5.

[0036] According to some embodiments of this application, the support frame 2 includes a base plate 21 and a support plate 22, the support plate 22 is disposed on the base plate 21, the roller 3 is disposed on the support plate 22, and the upper fixing plate 51 is disposed on the base plate 21.

[0037] In this embodiment, the support frame 2 includes a base plate 21 and a support plate 22. The support plate 22 is vertically mounted on the base plate 21 and is used to install and fix the roller 3. The upper fixing plate 51 is detachably mounted on the base plate 21, while the lower fixing plate 52 is detachably mounted on the housing 1, which facilitates the installation and maintenance of the buffer assembly 5.

[0038] It is understandable that the upper fixing plate 51 and the lower fixing plate 52 are detachably mounted on the base plate 21 and the housing 1 by bolts.

[0039] According to some embodiments of this application, the fastener 4 includes: Guide pin 41, the guide pin 41 includes a sliding section and a threaded section, the base plate 21 is provided with a fixing hole, the housing 1 is provided with a fixing groove, and the sliding section of the guide pin 41 passes through the fixing hole and is disposed in the fixing groove. Locking member 42, which is located on the base plate 21 and connected to the threaded section of the guide pin 41.

[0040] The locking component 42 is a locking nut.

[0041] In this embodiment, the fixing component 4 includes a guide pin 41 and a locking component 42. The guide pin 41 includes a sliding section and a threaded section. A fixing hole is provided on the base plate 21 of the support frame 2, and a fixing groove is provided on the housing 1. The sliding section of the guide pin 41 passes through the fixing hole and is threaded into the fixing groove. The locking component 42 is located on the base plate 21 and is connected to the threaded section of the guide pin 41, so that the guide pin 41 can stably connect the base plate 21 and the housing 1, thereby assembling the support frame 2 onto the housing 1 and ensuring the reliability of the support base installation. Furthermore, the cooperation between the sliding section of the guide pin 41 and the fixing hole allows the base plate 21 to slide relative to the guide pin 41, thereby providing guidance for the displacement of the support frame 2 relative to the housing 1. Combined with the deformation of the buffer component 5 and the buffer gap 6, it better adapts to the thermal expansion of the housing 1, reduces the generation of support stress, and protects the thin-walled structure of the housing 1 and the support frame 2 from damage.

[0042] It should be noted that the sliding section of the guide pin 41 and the fixing hole are clearance fit, which can not only ensure the smooth sliding of the guide pin 41 and avoid jamming, but also limit the displacement direction of the support frame 2, so that the support frame 2 only moves along the expansion direction of the housing 1, thereby ensuring the concentricity of the adjusting ring and the housing 1. At the same time, the connection between the locking part 42 and the threaded section of the guide pin 41 can prevent the guide pin 41 from falling out of the fixing hole and fixing groove, and improve the connection stability of the fixing part 4.

[0043] It is understandable that the locking component 42 is a locking nut, which is threadedly engaged with the threaded section of the guide pin 41. The structure is simple, easy to disassemble and assemble, and can achieve a stable locking of the guide pin 41, further improving the connection reliability of the fixing component 4.

[0044] According to some embodiments of this application, the fixing member 4 further includes a bushing 43, which is sleeved on the sliding section and located inside the fixing hole.

[0045] In this embodiment, the bushing 43 reduces the friction between the sliding section of the guide pin 41 and the fixing hole, and also acts as a buffer to reduce the impact between the guide pin 41 and the fixing hole, thereby further improving the connection stability and service life of the fastener 4.

[0046] According to some embodiments of this application, there are multiple support seats, which are arranged in a ring-shaped interval along the outer circumference of the housing 1.

[0047] In this embodiment, there are multiple support bases, which are arranged in a ring at uniform intervals along the outer circumference of the housing 1, further improving the concentricity of the adjusting ring and the housing 1, making the force on the adjusting ring more balanced, and enhancing the overall stability of the support structure.

[0048] Understandably, there are 16 support bases, arranged in a uniform ring around the outer circumference of the casing 1. This distribution of multiple support bases at equal intervals along the outer circumference of the casing 1 effectively creates multiple uniform support points along the inner circumference of the adjusting ring. This ensures the adjusting ring experiences a uniform force across the entire circumference, preventing excessive localized stress that could lead to displacement or deformation, and guaranteeing balanced force distribution. When the casing 1 expands due to heat, it expands uniformly outwards along the circumference. Each uniformly arranged support base is equipped with a buffer component 5 of the same elastic stiffness, which can simultaneously and equally absorb the expansion of the casing 1, thus maintaining its alignment with the center of the casing 1 and ensuring concentricity.

[0049] According to some embodiments of this application, adjustment holes 7 are provided on the base plate 21 and on both sides of the fixing member 4.

[0050] In this embodiment, by opening the adjustment hole 7, during installation, the bolt is inserted into the adjustment hole 7, and the bottom of the bolt can contact the housing 1 to achieve the initial setting of the buffer gap 6. Furthermore, the buffer gap 6 can be set according to the usage requirements. After the buffer gap 6 and the buffer assembly 5 are installed, the bolt can be removed.

[0051] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A support base for a stator vane adjusting ring of an ultra-large axial compressor, wherein the support base is disposed between the housing (1) and the adjusting ring for supporting the adjusting ring, characterized in that, The support base includes: A support frame (2) is mounted on the housing (1), and a roller (3) is mounted on the support frame (2), the roller (3) being in contact with the adjusting ring; A fastener (4) passes through the support frame (2) and connects to the housing (1) for assembling the support frame (2) onto the housing (1); A buffer assembly (5) is disposed between the housing (1) and the support frame (2) and is located on both sides of the fixing member (4); There is a buffer gap (6) between the bottom of the housing (1) and the support frame (2). When the housing (1) is heated and expands, the buffer assembly (5) deforms to offset the expansion of the housing (1).

2. The ultra-large size axial compressor stator vane adjusting ring support according to claim 1, characterized in that, The buffer component (5) includes: Upper fixing plate (51), the upper fixing plate (51) is connected to the bottom of the support frame (2); The lower fixing plate (52) is connected to the housing (1); Damping springs (53), a plurality of the damping springs (53) are disposed between the upper fixed plate (51) and the lower fixed plate (52).

3. The ultra-large size axial compressor stator vane adjusting ring support according to claim 2, characterized in that, The upper fixing plate (51) has a first mounting groove, and the lower fixing plate (52) has a second mounting groove at a matching position with the first mounting groove. The first end of the damping spring (53) is disposed in the first mounting groove, and the second end of the damping spring (53) is disposed in the second mounting groove.

4. The ultra-large size axial compressor stator vane adjusting ring support according to claim 3, characterized in that, The damping spring (53) is made of metal or rubber.

5. The ultra-large size axial compressor stator vane adjusting ring support according to claim 4, characterized in that, The support frame (2) includes a base plate (21) and a support plate (22). The support plate (22) is disposed on the base plate (21), the roller (3) is disposed on the support plate (22), and the upper fixing plate (51) is disposed on the base plate (21).

6. The ultra-large size axial compressor stator vane adjusting ring support according to claim 1, characterized in that, The fastener (4) includes: The guide pin (41) includes a sliding section and a threaded section. A fixing hole is provided on the base plate (21), and a fixing groove is provided on the housing (1). The sliding section of the guide pin (41) passes through the fixing hole and is disposed in the fixing groove. Locking member (42), which is located on the base plate (21) and connected to the threaded section of the guide pin (41).

7. The ultra-large size axial compressor stator vane adjusting ring support according to claim 6, characterized in that, The locking component (42) is a locking nut.

8. The ultra-large size axial compressor stator vane adjusting ring support according to claim 6, characterized in that, The fastener (4) also includes a bushing (43), which is fitted onto the sliding section and located inside the fixing hole.

9. The ultra-large size axial compressor stator vane adjusting ring support according to claim 1, characterized in that, The number of support seats is multiple, and they are arranged in a ring-shaped interval along the outer circumference of the casing (1).

10. The ultra-large size axial compressor stator vane adjusting ring support according to claim 1, characterized in that, Adjustment holes (7) are provided on the base plate (21) and on both sides of the fixing member (4).

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