Limiting structure of compressor linkage ring

Abstract

The utility model provides a kind of limit structure of compressor linkage ring, limit screw is arranged on linkage ring, limit screw and the casing of compressor are opposite;Limit structure includes first limit part and second limit part;Wherein, first limit part and limit screw cooperate;Second limit part is assembled between linkage ring and casing, to keep the gap between limit screw and casing.The above-mentioned limit structure can avoid falling in the movement process of linkage ring.

Description

Technical Field

[0001] This utility model relates to air compressors, and more particularly to a limiting structure for an air compressor linkage ring. Background Technology

[0002] The Variable Stator Vane (VSV) adjustment mechanism is primarily used to improve compressor operating characteristics, expand the compressor's stable operating range, and prevent surge. The VSV adjustment mechanism mainly adjusts the VSV's installation angle according to the engine's operating state at different times, ensuring the rotor blade inlet airflow angle approaches the design state, eliminating airflow separation on the blade back, and thus widening the compressor's stable operating range. During operation, the actuator cylinder transmits torque through a connecting rod, causing the adjustment mechanism's linkage to rotate circumferentially around the engine axis. Simultaneously, the rocker arm moves around the variable stator vane's rotation axis, adjusting the variable stator vane's installation angle. The linkage ring is connected to the variable stator vane via the rocker arm.

[0003] During the calibration and adjustment of the clearance between the limit screw and the housing, a shim is used between the linkage ring and the housing to ensure that the linkage ring and the housing are as coaxial as possible, thus ensuring the accuracy of the calibration and the consistency of the clearance height between the limit screw and the housing.

[0004] However, ordinary pads are prone to falling off because they cannot be secured tightly, so they need to be glued with materials such as tape to ensure that they are installed in the correct position. Utility Model Content

[0005] The purpose of this invention is to provide a limiting structure for the compressor linkage ring, which can prevent it from falling off.

[0006] One aspect of this utility model provides a limiting structure for a compressor linkage ring, wherein a limiting screw is provided on the linkage ring, and the limiting screw is opposite to the compressor casing; the limiting structure includes a first limiting part and a second limiting part; wherein the first limiting part cooperates with the limiting screw; the second limiting part is assembled between the linkage ring and the casing to maintain the gap between the limiting screw and the casing.

[0007] In one embodiment, the first limiting portion includes a limiting groove adapted to the limiting screw, the limiting groove being capable of accommodating the limiting screw.

[0008] In one embodiment, the width of the limiting groove is greater than or equal to the diameter of the limiting screw.

[0009] In one embodiment, the first limiting part is provided with an opening communicating with the limiting groove, and the limiting screw can be received into the limiting groove from the opening.

[0010] In one embodiment, the thickness of the second limiting portion is adapted to the distance between the linkage ring and the housing.

[0011] In one embodiment, a boss is provided on the outer peripheral surface of the casing, and a bushing is provided at one end of the limiting screw, with the bushing and the boss facing each other; the second limiting part includes a first limiting surface and a second limiting surface facing each other; wherein, the first limiting surface contacts the linkage ring, and the second limiting surface contacts the boss of the casing.

[0012] In one embodiment, the cross-section of the first limiting surface of the second limiting portion is arc-shaped, and the arc extends circumferentially along the linkage ring.

[0013] In one embodiment, the radius of the arc is matched with the radius of the linkage ring.

[0014] In one embodiment, the cross-section of the second limiting surface of the second limiting portion is arc-shaped, and the arc extends circumferentially along the linkage ring.

[0015] In one embodiment, the radius of the arc is adapted to the radius of the casing.

[0016] The limiting structure of the compressor linkage ring of this utility model uses a first limiting part and a limiting screw to cooperate, which prevents the limiting structure from falling off during the movement of the linkage ring and has good stability. At the same time, the second limiting part is assembled between the linkage ring and the casing to ensure the coaxiality of the linkage ring and the casing, improve the calibration accuracy of the adjustment mechanism and the consistency of the gap between the limiting screw and the casing, and the structure is simple and easy to assemble. Attached Figure Description

[0017] The above and other features, properties and advantages of this utility model will become more apparent from the following description taken in conjunction with the accompanying drawings and embodiments, wherein:

[0018] Figure 1 This is a partial schematic diagram of the air compressor;

[0019] Figure 2 This is a schematic diagram of an embodiment of the limiting structure of the compressor linkage ring according to the present invention;

[0020] Figure 3 yes Figure 2 Top view of the limiting structure shown;

[0021] Figure 4 yes Figure 2 The cross-sectional view of the limiting structure shown;

[0022] Figure 5 yes Figure 2 The diagram shows the dimensions of the limiting structure. Detailed Implementation

[0023] The Variable Stator Vane (VSV) adjustment mechanism is primarily used to improve compressor operating characteristics, expand the compressor's stable operating range, and prevent surge. The VSV adjustment mechanism mainly adjusts the VSV's installation angle according to the engine's operating state at different times, ensuring the rotor blade inlet airflow angle approaches the design state, eliminating airflow separation on the blade back, and thus widening the compressor's stable operating range. During operation, the actuator cylinder transmits torque through a connecting rod, causing the adjustment mechanism's linkage to rotate circumferentially around the engine axis. Simultaneously, the rocker arm moves around the variable stator vane's rotation axis, adjusting the variable stator vane's installation angle. The linkage ring is connected to the variable stator vane via the rocker arm.

[0024] During the calibration and adjustment of the clearance between the limit screw and the housing, a shim is used between the linkage ring and the housing to ensure that the linkage ring and the housing are as coaxial as possible, thus ensuring the accuracy of the calibration and the consistency of the clearance height between the limit screw and the housing.

[0025] However, ordinary pads are prone to falling off because they cannot be firmly secured, requiring the use of adhesive tape or similar materials to ensure accurate installation. Specifically, due to their structural characteristics, ordinary pads cannot be tightly secured between the linkage ring and the casing, and are easily dislodged by vibration, temperature changes, and other factors. To solve this problem, adhesive tape or similar materials are often used to fix the pads in place. However, this method also has several drawbacks. First, the adhesive effect of the tape may weaken with changes in time, temperature, humidity, and other environmental factors, leading to the risk of the pads loosening or even falling off again. Second, using adhesive tape increases the difficulty of installation and disassembly. When replacing pads or performing equipment maintenance, removing and re-attaching the tape requires significant time and labor costs, and the removal of the tape may also damage the equipment surface, affecting its appearance and performance.

[0026] Reference will now be made in detail to embodiments of the present invention, one or more examples of which are illustrated in the accompanying drawings. Each example is provided to explain the present invention and not to limit it. In fact, it will be apparent to those skilled in the art that various modifications and variations may be made to the present invention without departing from the scope or spirit thereof. For example, features shown or described as part of one embodiment may be used with another embodiment to produce yet another embodiment. Therefore, the present invention is intended to cover these modifications and variations that fall within the scope of the appended claims and their equivalents.

[0027] The term "axial" refers to the direction of the housing or parallel to the central axis of the housing, and the term "circumferential" refers to the direction about the "axial". As used herein, the terms "first" and "second" may be used interchangeably to distinguish one component from another and are not intended to indicate the location or importance of individual components.

[0028] Figure 1 A partial structure of the compressor is shown. (For example...) Figure 1 As shown, the actuating cylinder (not shown) transmits torque through a connecting rod, causing the linkage ring 30 to rotate circumferentially around the engine axis. Simultaneously, the rocker arm 20 moves around the rotation axis of the adjustable stator blade 40. The rocker arm 20 and the adjustable stator blade 40 are connected, and the rocker arm 20 can drive the adjustable stator blade 40 to adjust its installation angle. The linkage ring 30 is connected to the adjustable stator blade 40 via the rocker arm 20 and the adjustable stator blade 40 respectively.

[0029] Figures 2 to 4 The diagram illustrates an embodiment of the limiting structure 100 for the linkage ring 30 of the compressor adjustable stator blade 40. A limiting screw 50 is provided on the linkage ring 30, and the limiting screw 50 is opposite to the compressor casing 10. The limiting screw 50 prevents the linkage ring 30 from becoming eccentric during movement, thus maintaining a certain degree of concentricity between the linkage ring 30 and the compressor casing 10 during operation.

[0030] The limiting structure 100 of this utility model includes a first limiting part 110 and a second limiting part 120. The first limiting part 110 cooperates with a limiting screw 50. The second limiting part 120 is assembled between the linkage ring 30 and the housing 10 to maintain the gap between the limiting screw 50 and the housing 10, preventing excessive friction between the limiting screw 50 and the housing 10 and thus preventing jamming.

[0031] The limiting structure 100 of the compressor linkage ring 30 of this utility model is engaged by the first limiting part 110 and the limiting screw 50 to prevent the limiting structure 100 from falling off during the movement of the linkage ring 30, thus having good stability. At the same time, the second limiting part 120 is assembled between the linkage ring 30 and the casing 10 to ensure that the linkage ring 30 and the casing 10 are as coaxial as possible, improve the calibration accuracy of the adjustment mechanism and the consistency of the gap between the limiting screw 50 and the casing 10, and the structure is simple and easy to assemble.

[0032] like Figure 2 As shown, in one embodiment, the first limiting part 110 includes a limiting groove 111 adapted to the limiting screw 50, and the limiting groove 111 can accommodate the limiting screw 50. Under the restriction of the limiting screw 50, the limiting groove 111 can move within a certain range to prevent the limiting structure 100 from being excessively displaced during the movement of the linkage ring 30.

[0033] To ensure that the limiting screw 50 can be accommodated within the limiting groove 111, the size of the groove 111 needs to be compatible with the diameter of the limiting screw 50. Specifically, the width of the limiting groove 111 is greater than or equal to the diameter of the limiting screw 50 to ensure that the limiting screw 50 can be smoothly inserted.

[0034] like Figure 2 and Figure 3 As shown, the limiting groove 111 is U-shaped to fit the circular cross-section of the limiting screw 50. The two side walls of the U-shaped limiting groove 111 provide lateral restraint, allowing the limiting screw 50 to slide circumferentially.

[0035] The first limiting part 110 is provided with an opening 112 that communicates with the limiting groove 111. The limiting screw 50 can be received from the opening 112 into the limiting groove 111, which facilitates the installation of the limiting structure 100.

[0036] When installing the limiting structure 100 of this utility model, the limiting structure 100 can be slid into the space between the housing 10 and the linkage ring 30 along the circumference of the housing 10, ensuring that the limiting screw 50 is located in the limiting groove 111. In this way, the limiting structure 100 is not easy to fall off and has good stability.

[0037] In other embodiments, the first limiting portion 110 may be used in conjunction with the limiting screw 50 by means of other methods such as threaded holes.

[0038] Continue to refer to Figures 2 to 4 A boss 11 is provided on the outer peripheral surface of the casing 10, and a bushing 60 is provided on one end of the limiting screw 50. The bushing 60 and the boss 11 are opposite to each other.

[0039] from Figure 4 It can be seen that there is a certain gap between the bushing 60 and the boss 11 of the housing 10. If the eccentricity of the linkage ring 30 causes this gap to disappear during the movement of the linkage ring 30, the bushing 60 will directly rub against the boss 11, resulting in jamming. The limiting structure 100 of this utility model can keep the bushing 60 and the boss 11 at one end of the limiting screw 50 at a certain gap.

[0040] like Figure 4 As shown, the thickness of the second limiting part 120 is adapted to the distance between the linkage ring 30 and the housing 10 to maintain the concentricity of the linkage ring 30 and the housing 10.

[0041] Furthermore, the thickness of the second limiting part 120 is consistent with the distance between the linkage ring 30 and the boss 11, that is, the thickness of the second limiting part 120 is equal to the design value of the gap between the linkage ring 30 and the boss 11.

[0042] Specifically, the second limiting part 120 includes a first limiting surface 121 and a second limiting surface 122. The first limiting surface 121 contacts the linkage ring 30, and the second limiting surface 122 contacts the boss 11 of the housing 10. Thus, the second limiting part 120 can be locked between the linkage ring 30 and the boss 11, further reducing the risk of falling.

[0043] like Figure 5 As shown, the cross-section of the first limiting surface 121 of the second limiting part 120 is arc-shaped, and the arc extends along the circumference of the linkage ring 30. Preferably, the radius R1 of the arc is matched with the radius of the linkage ring 30, so that the first limiting surface 121 and the linkage ring 30 can be tightly fitted together.

[0044] Continue to refer to Figure 5 The cross-section of the second limiting surface 122 of the second limiting part 120 is arc-shaped, and the arc extends circumferentially along the linkage ring 30. Preferably, the radius R2 of the arc is adapted to the radius of the boss 11, so that the first limiting surface 121 and the boss 11 can be tightly fitted together.

[0045] Considering the movement of the linkage ring 30, the coefficient of friction of the first limiting surface 121 and the second limiting surface 122 can be relatively small in order to avoid large frictional forces between the first limiting surface 121 and the linkage ring 30, the second limiting surface 122 and the boss 11, which could cause jamming.

[0046] The limiting structure 100 of this utility model effectively prevents the limiting structure 100 from falling off through the cooperation of the first limiting part 110 and the limiting screw 50. During the movement of the linkage ring 30, when the limiting screw 50 is screwed into or embedded in the first limiting part 110, the two overlap, ensuring that the limiting structure 100 always remains in the correct position, providing a basic guarantee for the movement of the entire linkage ring 30.

[0047] Meanwhile, the second limiting part 120 of the limiting structure 100 is assembled between the linkage ring 30 and the casing 10. On the one hand, this ensures that the linkage ring 30 and the casing 10 are as coaxial as possible, guaranteeing the concentricity of the linkage ring 30 and the casing 10 during movement. During compressor operation, the coaxiality of the linkage ring 30 and the casing 10 directly affects the working accuracy of the regulating mechanism. If they are not coaxial, deviations will occur during the regulation process, making it impossible to accurately control parameters such as the compressor's intake volume and airflow angle, thereby reducing the compressor's efficiency and performance. On the other hand, the second limiting part 120 also helps to improve the calibration accuracy of the regulating mechanism and the consistency of the gap between the limiting screw 50 and the casing 10. In the equipment calibration process, accurate calibration accuracy is key to ensuring equipment performance. The precise positioning function of the second limiting part 120 allows for more accurate determination of the position of each component when calibrating the regulating mechanism, thereby improving calibration accuracy. The second limiting part 120 also plays an important role in ensuring the consistency of the gap between the limiting screw 50 and the casing 10. A uniform gap ensures that the limit screw 50 is subjected to uniform force during operation, avoiding localized wear or loosening caused by uneven gaps, extending the service life of the equipment and improving its reliability.

[0048] Furthermore, the limiting structure 100 of this utility model has significant advantages in terms of simple structure and convenient assembly. In actual industrial production and equipment maintenance, a simple design means lower manufacturing costs and higher production efficiency. The limiting structure 100 of this utility model has no complex parts or cumbersome assembly processes, reducing processing difficulty and assembly time in the production process. At the same time, the convenient assembly feature also allows workers to quickly and accurately complete the installation and replacement of the limiting structure 100 during equipment installation and maintenance, greatly shortening equipment downtime and improving equipment availability and maintenance efficiency.

[0049] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible variations and modifications without departing from the spirit and scope of the present invention. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims

1. A limiting structure for a compressor linkage ring, wherein a limiting screw is provided on the linkage ring, and the limiting screw is opposite to the compressor casing; Its features are, The limiting structure includes a first limiting part and a second limiting part; wherein... The first limiting part and the limiting screw cooperate; The second limiting part is assembled between the linkage ring and the housing to maintain the gap between the limiting screw and the housing.

2. The limiting structure as described in claim 1, characterized in that, The first limiting part includes a limiting groove adapted to the limiting screw, and the limiting groove is capable of accommodating the limiting screw.

3. The limiting structure as described in claim 2, characterized in that, The width of the limiting groove is greater than or equal to the diameter of the limiting screw.

4. The limiting structure as described in claim 2, characterized in that, The first limiting part is provided with an opening that communicates with the limiting groove, and the limiting screw can be received into the limiting groove from the opening.

5. The limiting structure as described in any one of claims 1-4, characterized in that, The thickness of the second limiting part is adapted to the distance between the linkage ring and the casing.

6. The limiting structure as described in claim 5, characterized in that, A boss is provided on the outer peripheral surface of the casing, and a bushing is provided at one end of the limiting screw, with the bushing and the boss facing each other. The second limiting portion includes opposing first and second limiting surfaces; wherein, The first limiting surface contacts the linkage ring, and the second limiting surface contacts the boss of the casing.

7. The limiting structure as described in claim 6, characterized in that, The cross-section of the first limiting surface of the second limiting part is arc-shaped, and the arc extends circumferentially along the linkage ring.

8. The limiting structure as described in claim 7, characterized in that, The radius of the arc is matched with the radius of the linkage ring.

9. The limiting structure as described in claim 6, characterized in that, The cross-section of the second limiting surface of the second limiting part is arc-shaped, and the arc extends circumferentially along the linkage ring.

10. The limiting structure as described in claim 9, characterized in that, The radius of the arc is matched with the radius of the casing.

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