A device for adjusting the degree of freedom of a rotating blade of a fluid machine and a method for adjusting the same

Abstract

The present application belongs to the technical field of blade freedom degree adjusting device, and particularly relates to a freedom degree adjusting device for rotating blades of fluid machinery and an adjusting method thereof, which device comprises a mounting cylinder and a plurality of blade bodies arranged circumferentially on the mounting cylinder, and the mounting cylinder and the blade bodies are connected through a plug-in rod; one end of the plug-in rod penetrates through the side wall of the mounting cylinder; the mounting cylinder and the plug-in rod are connected through a free rotation degree adjusting mechanism, which is used for adjusting the angle of the blade body; the plug-in rod and the blade body are connected through a dismounting assembly, which is used for detachable connection of the plug-in rod and the blade body; an extension degree adjusting part is arranged between the mounting cylinder and the blade body, and the extension degree adjusting part is used for improving the connection stability between the mounting cylinder and the blade body. The present application can change the angle of the blade body, realize the free rotation degree adjustment and position adjustment of the blade body, meet the requirements of different working conditions, and the dismounting assembly facilitates the mounting and dismounting of the blade body.

Description

Technical Field

[0001] This invention belongs to the technical field of blade degree-of-freedom adjustment equipment, and particularly relates to a degree-of-freedom adjustment device and adjustment method for a fluid machinery rotating blade. Background Technology

[0002] In modern industry, fluid machinery, as a key device for energy conversion and transfer, is widely used in many industries such as energy, chemical, and aerospace. Among them, rotating blades, as the core component of fluid machinery, directly affect the operating efficiency, stability, and reliability of the equipment due to their performance and adjustability.

[0003] Existing rotary blade adjustment devices are mostly single-function and lack sufficient adjustment freedom. Most devices can only perform simple angle adjustments on the blades and cannot achieve comprehensive adjustment of multiple dimensions such as blade position and angle. In practical applications, the working environments of different fluid machinery vary greatly, with parameters such as fluid velocity, flow direction, and pressure differing. Blades with a single adjustment function are difficult to meet the complex and ever-changing working conditions.

[0004] Existing blade adjustment devices present numerous inconveniences in blade installation and removal. Blades, as one of the most vulnerable components in fluid machinery, require regular maintenance and replacement. Many devices employ complex fixing structures, necessitating specialized tools and cumbersome procedures for blade installation and removal. This not only increases the workload and labor intensity of maintenance personnel but also prolongs equipment downtime and reduces equipment availability.

[0005] The existing rotating blade adjustment devices have unreasonable structural designs, resulting in poor stability during use.

[0006] To this end, we propose a degree-of-freedom adjustment device and method for rotating blades in fluid machinery. Summary of the Invention

[0007] The purpose of this invention is to provide a device and method for adjusting the degrees of freedom of rotating blades in fluid machinery, so as to solve the above-mentioned problems.

[0008] To achieve the above objectives, the present invention provides the following solution:

[0009] A device for adjusting the degrees of freedom of rotating blades in fluid machinery includes a mounting cylinder and a plurality of blade bodies disposed circumferentially on the mounting cylinder.

[0010] The mounting cylinder and the blade body are connected by a plug-in rod; one end of the plug-in rod penetrates the side wall of the mounting cylinder.

[0011] The mounting cylinder and the plug rod are connected by a free rotation adjustment mechanism, which is used to adjust the angle of the blade body.

[0012] The plug rod is connected to the blade body via a disassembly assembly, which is used for detachable connection between the plug rod and the blade body;

[0013] An extension adjustment component is provided between the mounting cylinder and the blade body, and the extension adjustment component is used to improve the connection stability between the mounting cylinder and the blade body.

[0014] Optionally, the side wall of the mounting cylinder is provided with a through hole for inserting the plug rod.

[0015] Optionally, the free rotation adjustment mechanism includes:

[0016] A plurality of limiting holes are evenly arranged in a matrix at one end of the insertion rod away from the blade body;

[0017] The limiting structure has a fixed end that is fixed to the inside of the mounting cylinder, and the movable end of the limiting structure is limited and engaged with any of the limiting holes.

[0018] Optionally, the limiting structure includes:

[0019] The mounting groove is formed in the inner wall of the mounting cylinder;

[0020] A support rod is fixed inside the mounting groove;

[0021] The sliding sleeve is slidably engaged with the upright rod, and the sliding sleeve is elastically connected to the mounting groove;

[0022] The connecting plate is fixed on the sliding sleeve block;

[0023] A limiting rod is fixed on the connecting plate, and the limiting rod is inserted into any of the limiting holes.

[0024] Optionally, a spring is sleeved on the outside of the upright rod, one end of the spring is fixed to the mounting groove, and the other end of the spring is fixed to the sliding sleeve block.

[0025] Optionally, the disassembly / assembly assembly includes:

[0026] The mounting slot is fixedly connected to one end of the plug-in rod, and limit slots are respectively opened on the front and rear sides of the mounting slot;

[0027] A fixing block is fixedly connected to one end of the blade body. Limiting plates are respectively provided on the front and rear sides of the fixing block. The limiting plates are inserted into the corresponding limiting slots, and the limiting slots are in a limiting fit with the limiting plates.

[0028] The limiting insert plate is fixed with an overlapping plate, the overlapping plate is slidably disposed within the fixing block, and the limiting insert plate penetrates the side wall of the fixing block;

[0029] The overlapping plate is slidably disposed in the fixing block through a rectangular groove, which is formed on the inner sidewall of the fixing block.

[0030] A reciprocating structure is provided between the rectangular groove and the overlapping plate.

[0031] Optionally, the reciprocating structure includes:

[0032] A strip-shaped mounting groove is formed on the side wall of the rectangular groove;

[0033] The cut block is fixed in the middle of the strip-shaped placement groove;

[0034] A horizontal fixing rod is fixed in the strip-shaped mounting groove, and the horizontal fixing rod passes through the cutting block;

[0035] Two movable sleeves are provided, and the two movable sleeves are respectively disposed on both sides of the cutting block. The movable sleeves are slidably engaged with the strip-shaped mounting groove and the horizontal fixing rod, and the movable sleeves are fixed with the corresponding overlapping plates.

[0036] There are two springs, which are respectively disposed on both sides of the cutting block. Both springs are sleeved on the horizontal fixing rod. One end of the spring is fixedly connected to one side of the cutting block, and the other end of the spring is fixedly connected to the corresponding movable sleeve block.

[0037] Optionally, the extension adjustment component includes:

[0038] One side of the socket plate is fixedly connected to the end of the plug rod, and the other side of the socket plate is fixedly connected to the mounting groove block;

[0039] The second socket is slidably sleeved on the outside of the plug rod, and the second socket is elastically connected to the first socket by the second spring.

[0040] The second spring is sleeved on the outside of the plug rod. One end of the second spring is fixed to the first socket, and the other end of the second spring is connected to the second socket through a rotating structure.

[0041] Optionally, the rotating structure includes:

[0042] The mounting ring is fixedly connected to the end of the second spring away from the first socket plate. The mounting ring is movably disposed on one side of the second socket plate and is movably sleeved on the outside of the plug rod.

[0043] An L-shaped plate is fixedly connected at one end to the mounting ring, and a rotating slider is fixedly connected at the other end of the L-shaped plate.

[0044] A rotating groove is formed on the side wall of the second socket, and the rotating slider is slidably disposed in the rotating groove.

[0045] A method for adjusting the degree-of-freedom adjustment device of a fluid machinery rotating blade, using the aforementioned degree-of-freedom adjustment device of a fluid machinery rotating blade, includes:

[0046] The blade body is connected to one end of the plug-in rod via the disassembly assembly;

[0047] After determining the blade body angle, pass the other end of the connector rod through the side wall of the mounting cylinder, and then use the free rotation adjustment mechanism to fix the connector rod.

[0048] The blade body is securely connected to the mounting cylinder by the extension adjustment component.

[0049] When the blade body needs to be replaced, the blade body is removed from the plug rod using the disassembly and assembly assembly.

[0050] Compared with the prior art, the present invention has the following advantages and technical effects:

[0051] In use, each blade body is connected to one end of its corresponding connector rod via a disassembly and assembly assembly. After determining the blade body angle according to usage requirements, the other end of the connector rod is passed through the side wall of the mounting cylinder. The connector rod is then fixed using a free rotation adjustment mechanism, and the blade body is securely connected to the mounting cylinder using an extension adjustment component. When the blade body needs to be replaced, it can be removed from the connector rod using the disassembly and assembly assembly. This invention, through a free rotation adjustment mechanism, allows for changing the angle of the blade body, achieving free rotation adjustment to meet different operating conditions. The extension adjustment component adjusts the extension length of the connector rod, thereby adjusting the position of the blade body. The disassembly and assembly assembly facilitates the installation and removal of the blade body. Attached Figure Description

[0052] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 This is a schematic diagram of the structure of the present invention;

[0054] Figure 2 This is a schematic diagram of the structure of the mounting cylinder of the present invention;

[0055] Figure 3 This is a partial structural disassembly diagram of the blade body and the connector rod of the present invention;

[0056] Figure 4 For the present invention Figure 2 Enlarged view of the structure at point A in the middle;

[0057] Figure 5 For the present invention Figure 3 Enlarged view of the structure at point B;

[0058] Figure 6 For the present invention Figure 3 Enlarged view of the structure at point C;

[0059] Figure 7 For the present invention Figure 3 Enlarged view of the structure at point D;

[0060] The components are as follows: 1. Installation cylinder; 2. Through hole; 3. Insertion rod; 4. Installation slot block; 5. Fixing block; 6. Blade body; 7. Limiting insertion hole; 8. Placement slot; 9. Vertical support rod; 10. Spring one; 11. Sliding sleeve block; 12. Connecting plate; 13. Limiting insertion rod; 14. Sleeve plate one; 15. Sleeve plate two; 16. Spring two; 17. Installation ring; 18. L-shaped plate; 19. Rotating slot; 20. Rotating slider; 21. Limiting slot; 22. Rectangular groove; 23. Strip placement slot; 24. Cutting block; 25. Horizontal support rod; 26. Spring three; 27. Moving sleeve block; 28. Overlap plate; 29. ​​Limiting insertion plate. Detailed Implementation

[0061] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0062] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0063] Reference Figures 1 to 7This invention discloses a device for adjusting the degree of freedom of a rotating blade in fluid machinery, comprising a mounting cylinder 1 and a plurality of blade bodies 6 disposed around the circumference of the mounting cylinder 1.

[0064] The mounting cylinder 1 and the blade body 6 are connected by a connector rod 3; one end of the connector rod 3 passes through the side wall of the mounting cylinder 1.

[0065] The mounting cylinder 1 and the plug rod 3 are connected by a free rotation adjustment mechanism, which is used to adjust the angle of the blade body 6.

[0066] The plug rod 3 is connected to the blade body 6 via a disassembly assembly, which is used to detachably connect the plug rod 3 to the blade body 6.

[0067] An extension adjustment component is provided between the mounting cylinder 1 and the blade body 6. The extension adjustment component is used to improve the connection stability between the mounting cylinder 1 and the blade body 6.

[0068] In use, each blade body 6 is connected to one end of its corresponding connector rod 3 via a disassembly and assembly assembly. After determining the angle of the blade body 6 according to the usage requirements, the other end of the connector rod 3 is passed through the side wall of the mounting cylinder 1. Then, the connector rod 3 is fixed using a free rotation adjustment mechanism, and the blade body 6 is securely connected to the mounting cylinder 1 using an extension adjustment component. When it is necessary to replace the blade body 6, it can be removed from the connector rod 3 using the disassembly and assembly assembly. This invention, through the free rotation adjustment mechanism, can change the angle of the blade body 6, realizing the free rotation adjustment of the blade body 6 to meet the needs of different working conditions; the extension adjustment component can adjust the extension length of the connector rod 3, thereby adjusting the position of the blade body 6; the disassembly and assembly assembly facilitates the installation and removal of the blade body 6.

[0069] As an optional implementation, the side wall of the mounting cylinder 1 is provided with a through hole 2 for inserting the plug rod 3.

[0070] A through hole 2 with a diameter of D1 is made on the outer periphery of the mounting cylinder 1. The insertion rod 3 is inserted into the inner wall of the through hole 2, and the clearance δ between the two satisfies: 0.15mm≤δ≤0.25mm. The diameter D2 of the insertion rod 3 satisfies:

[0071] D2 = D1 - δ.

[0072] As an optional implementation, the free rotation adjustment mechanism includes:

[0073] A number of limiting holes 7 are evenly arranged in a matrix at the end of the insertion rod 3 away from the blade body 6;

[0074] The limiting structure has its fixed end fixed to the inside of the mounting cylinder 1, and its movable end engaging with any limiting insertion hole 7.

[0075] As an optional implementation, the limiting structure includes:

[0076] The mounting groove 8 is formed on the inner wall of the mounting cylinder 1;

[0077] The upright rod 9 is fixed inside the mounting groove 8;

[0078] The sliding sleeve 11 is slidably engaged with the upright rod 9, and the sliding sleeve 11 is elastically connected to the mounting groove 8.

[0079] Connecting plate 12 is fixed on sliding sleeve block 11;

[0080] The limiting rod 13 is fixed on the connecting plate 12 and can be inserted into any limiting hole 7.

[0081] As an optional implementation, a spring 10 is sleeved on the outside of the upright rod 9. One end of the spring 10 is fixed to the mounting groove 8, and the other end of the spring 10 is fixed to the sliding sleeve block 11.

[0082] The free rotation adjustment mechanism is as follows:

[0083] Several limiting holes 7 are made around the periphery of the plug rod 3. The distribution angle of the limiting holes 7 is α. The circumferential angular spacing α of the limiting holes 7 satisfies the functional relationship between the diameter D2 of the plug rod 3 and the circumferential angular spacing α.

[0084]

[0085] Where: D2 is the diameter of the connector rod, δ min is the minimum wall thickness between holes, and k is the safety factor (preferably 1.35).

[0086] The diameter of the limiting socket 7 is d1, which satisfies:

[0087]

[0088] Where: Mt is the working torque of the connector rod, which is taken as 150 N·m in this invention, τ max To determine the allowable shear stress of the material, this invention uses 45 steel, with a shear stress of 120 MPa.

[0089] A vertical mounting groove 8 is formed on the inner wall of the mounting cylinder 1. A vertical support rod 9 is fixedly connected between the two end walls of the mounting groove 8. A spring 10 is sleeved around the outside of the vertical support rod 9. A sliding sleeve block 11 is slidably sleeved around the outside of the vertical support rod 9. A connecting plate 12 is fixedly welded to the surface of the sliding sleeve block 11. A limiting rod 13 is fixedly connected to the upper surface of the connecting plate 12. The diameter d2 of the limiting rod 13 satisfies the following requirements:

[0090]

[0091] The lower end of spring 10 is fixedly connected to the end wall of the mounting groove 8, and the upper end of spring 10 is fixedly connected to the lower end surface of the sliding sleeve block 11.

[0092] When an external force is applied to the limiting rod 13 to move it downward, the spring 10 is compressed. When the external force disappears, the elastic force of the spring 10 causes the sliding sleeve 11 to reset, which in turn drives the limiting rod 13 to reset, thus realizing the automatic reset function of the free rotation adjustment mechanism.

[0093] The upper end of the limiting rod 13 is inserted into the inner wall of the limiting hole 7, and the inner diameter of the limiting hole 7 is compatible with the outer diameter of the limiting rod 13.

[0094] The insertion of the limiting rod 13 into the limiting hole 7 secures the rod 3 to the mounting cylinder 1, ensuring the stability of the blade body 6 after angle adjustment.

[0095] As an optional implementation, the disassembly and assembly components include:

[0096] The mounting slot 4 is fixedly connected to one end of the plug-in rod 3. Limiting slots 21 are respectively opened on the front and rear sides of the mounting slot 4.

[0097] The fixing block 5 is fixedly connected to one end of the blade body 6. Limiting plates 29 are respectively provided on the front and rear sides of the fixing block 5. The limiting plates 29 are inserted into the corresponding limiting slots 21, and the limiting slots 21 and the limiting plates 29 are matched for limiting.

[0098] The limiting insert 29 is fixed with the overlapping plate 28, the overlapping plate 28 is slidably disposed in the fixing block 5, and the limiting insert 29 penetrates the side wall of the fixing block 5;

[0099] The overlapping plate 28 is slidably disposed in the fixing block 5 through the rectangular groove 22, which is formed on the inner side wall of the fixing block 5.

[0100] A reciprocating structure is provided between the rectangular groove 22 and the overlapping plate 28.

[0101] As an optional implementation, the reciprocating structure includes:

[0102] A strip-shaped mounting groove 23 is formed on the side wall of a rectangular groove 22;

[0103] Cutting block 24 is fixed in the middle of strip-shaped placement groove 23;

[0104] The horizontal fixing rod 25 is fixed in the strip-shaped mounting groove 23, and the horizontal fixing rod 25 is set through the cutting block 24;

[0105] Two movable sleeves 27 are provided, and the two movable sleeves 27 are respectively arranged on both sides of the cutting block 24. The movable sleeves 27 are slidably engaged with the strip-shaped placement groove 23 and the horizontal fixing rod 25, and the movable sleeves 27 are fixed with the corresponding overlapping plates 28.

[0106] There are two springs 26, which are respectively set on both sides of the cutting block 24. Both springs 26 are sleeved on the horizontal fixing rod 25. One end of the spring 26 is fixed to one side of the cutting block 24, and the other end of the spring 26 is fixed to the corresponding movable sleeve block 27.

[0107] The end of the plug rod 3 is fixedly installed with a mounting slot 4, and a fixing block 5 is installed on the inner wall of the mounting slot 4. The end of the fixing block 5 is fixedly welded with a blade body 6, and a disassembly and assembly assembly is connected between the mounting slot 4 and the fixing block 5.

[0108] A limiting slot 21 is provided on the side of the mounting block 4, and a rectangular groove 22 is provided on the upper surface of the fixing block 5. An overlapping plate 28 is slidably connected to the inner wall of the rectangular groove 22, and a limiting insert 29 is fixedly connected to the surface of the overlapping plate 28. A reciprocating structure is connected between the rectangular groove 22 and the overlapping plate 28.

[0109] The reciprocating structure includes a strip-shaped placement groove 23 opened on the inner side wall of the rectangular groove 22, a cutting block 24 fixedly welded to the inner wall of the strip-shaped placement groove 23, a horizontal fixing rod 25 fixedly connected between the end wall of the strip-shaped placement groove 23 and one end surface of the cutting block 24, a spring 26 sleeved around the horizontal fixing rod 25, and a sliding sleeve block 27 slidably sleeved around the horizontal fixing rod 25.

[0110] The movable sleeve 27 is slidably connected to the inner wall of the strip-shaped placement groove 23, and the opposite surfaces of the two movable sleeves 27 are fixedly connected to the two ends of an overlapping plate 28.

[0111] The movable sleeve 27 ensures the stability of the movement of the overlapping plate 28, enabling the limiting insert plate 29 to accurately engage and disengage with the limiting slot 21, thereby improving the reliability of the assembly and disassembly components.

[0112] The fixed connection between the mounting slot 4 and the fixing block 5 is achieved by inserting the limiting plate 29 into the limiting slot 21, thus ensuring the installation stability of the blade body 6.

[0113] When an external force is applied to the overlapping plate 28, the overlapping plate 28 drives the movable sleeve 27 to slide in the strip-shaped placement groove 23, and the spring 3 26 is compressed or stretched. When the external force disappears, the elastic force of the spring 3 26 causes the movable sleeve 27 to reset, thereby driving the overlapping plate 28 to reset, realizing reciprocating motion, which facilitates the control of the movement of the limit plate 29.

[0114] The reciprocating structure allows for control of the movement of the overlapping plate 28, which in turn drives the movement of the limiting insert plate 29, enabling the insertion and separation of the limiting insert plate 29 from the limiting slot 21. This facilitates the installation and disassembly of the blade body 6 and improves maintenance efficiency.

[0115] As an optional implementation, the extension adjustment component includes:

[0116] One side of the socket plate 14 is fixedly connected to the end of the plug rod 3, and the other side of the socket plate 14 is fixedly connected to the mounting groove block 4.

[0117] The second socket 15 is slidably sleeved on the outside of the plug rod 3, and the second socket 15 and the first socket 14 are elastically connected by the second spring 16.

[0118] Spring 2 16 is sleeved on the outside of the plug rod 3. One end of spring 2 16 is fixed to the socket 1 14, and the other end of spring 2 16 is connected to the socket 2 15 through a rotating structure.

[0119] As an optional implementation, the rotating structure includes:

[0120] The mounting ring 17 is fixedly connected to the end of the spring 2 16 away from the socket 1 14. The mounting ring 17 is movably disposed on one side of the socket 2 15. The mounting ring 17 is movably sleeved on the outside of the plug rod 3.

[0121] L-shaped plate 18, one end of which is fixedly connected to mounting ring 17, and the other end of L-shaped plate 18 is fixedly connected to rotating slider 20;

[0122] A rotating groove 19 is formed on the side wall of the socket plate 2 15, and a rotating slider 20 is slidably disposed in the rotating groove 19.

[0123] A first sleeve plate 14 is fixedly welded around the plug rod 3, and a second sleeve plate 15 is slidably sleeved around the plug rod 3. A second spring 16 is sleeved around the plug rod 3, and the second spring 16 is positioned between the first sleeve plate 14 and the second sleeve plate 15. A rotating structure connects the second sleeve plate 15 and the second spring 16.

[0124] The rotating structure includes an mounting ring 17 placed on the surface of the second socket 15, a rotating groove 19 formed on the periphery of the second socket 15, a rotating slider 20 slidably connected to the inner wall of the rotating groove 19, an L-shaped plate 18 fixedly welded to the periphery of the rotating slider 20, and one end of the L-shaped plate 18 fixedly welded to the periphery of the mounting ring 17.

[0125] When the insertion rod 3 is rotated to adjust the angle, the second socket 15 slides in the rotating groove 19 through the rotating slider 20, realizing relative rotation with the mounting ring 17, preventing the second spring 16 from being torn and ensuring the normal operation of the extension adjustment component.

[0126] The extension length of the plug rod 3 can be adjusted by inserting it into the limiting holes 7 at different positions to change the position of the blade body 6. The extension adjustment component ensures the stability of the blade body 6 after adjusting the extension length of the plug rod 3. Specifically, the rotating structure prevents the spring 16 from being torn when the plug rod 3 is rotated to adjust the angle. The spring 16 keeps the sleeve plate 15 in contact with the side wall of the mounting cylinder 1, thereby ensuring the stability and reliability of the device.

[0127] A method for adjusting the degree-of-freedom adjustment device of a fluid machinery rotating blade, using the aforementioned degree-of-freedom adjustment device of a fluid machinery rotating blade, includes:

[0128] The blade body 6 is connected to one end of the plug rod 3 via a disassembly assembly;

[0129] After determining the angle of the blade body 6, pass the other end of the plug rod 3 through the side wall of the mounting cylinder 1, and then fix the plug rod 3 using the free rotation adjustment mechanism;

[0130] The blade body 6 is securely connected to the mounting cylinder 1 by the extension adjustment component;

[0131] When the blade body 6 needs to be replaced, the blade body 6 is removed from the plug rod 3 by disassembling the assembly.

[0132] The usage process of this invention is as follows:

[0133] When the angle of the blade body 6 needs to be changed, pull the connecting plate 12 upward, causing the sliding sleeve 11 to slide along the upright rod 9. At this time, the spring 10 is compressed, and the limiting rod 13 is pulled out from the limiting insertion hole 7, releasing the limitation on the connecting rod 3. Then, manually rotate the connecting rod 3. The connecting rod 3 drives the mounting slot block 4, the fixing block 5, and the blade body 6 to rotate together, thereby changing the angle of the blade body 6. After the blade body 6 is rotated to the required angle, release the connecting plate 12. Under the elastic force of the spring 10, the sliding sleeve 11 drives the connecting plate 12 and the limiting rod 13 to move, so that the limiting rod 13 is inserted into the corresponding limiting insertion hole 7, limiting and fixing the connecting rod 3, thus completing the adjustment of the angle of the blade body 6.

[0134] When it is necessary to adjust the radial position of the blade body 6 (i.e., the distance between the blade body 6 and the mounting cylinder 1), pull the connecting plate 12 upward to disengage the limiting rod 13 from the current limiting insertion hole 7. At this time, push and pull the connecting rod 3 along the axial direction of the connecting rod 3 to move the limiting insertion hole 7 at the target longitudinal position until it is aligned with the limiting rod 13. Release the connecting plate 12, and under the action of the spring 10, the limiting rod 13 is inserted into the limiting insertion hole 7 at the new position to complete the locking. During this process, the sleeve plate 15 remains tightly against the side wall of the mounting cylinder 1 under the elastic force of the spring 16, compensating for the gap caused by the axial movement of the connecting rod 3. When the connecting rod 3 is rotated to adjust the angle, the rotating slider 20 slides along the rotating groove 19 to avoid damage to the spring 16 and ensure contact stability.

[0135] Insert the fixing block 5 into the mounting slot 4, at which point the limiting plate 29 and the limiting slot 21 are aligned. Under the elastic force of the spring 26, the moving sleeve 27 slides along the horizontal fixing rod 25, causing the overlapping plate 28 to move within the rectangular groove 22, so that the limiting plate 29 is inserted into the limiting slot 21, thus completing the fixing of the fixing block 5 and the mounting slot 4, and completing the installation of the blade body 6.

[0136] Manually push the overlapping plate 28 inward to move the moving sleeve 27 along the horizontal fixing rod 25, compress the spring 3 26, and pull the limiting insert 29 out of the limiting slot 21 to release the fixing block 5 from the mounting slot 4. Then pull the fixing block 5 out of the mounting slot 4 to complete the disassembly of the blade body 6.

[0137] This invention utilizes a free rotation adjustment mechanism, employing the insertion and engagement of the limiting rod 13 with the matrix-distributed limiting holes 7 on the insertion rod 3, to flexibly change the angle of the blade body 6, meeting specific requirements for blade angle under different operating conditions. Simultaneously, by axially moving the insertion rod 3 to select limiting holes 7 at different longitudinal heights, the radial position of the blade body 6 relative to the mounting cylinder 1 can be adjusted, giving this structure independent adjustment capabilities for both angle and position.

[0138] This design significantly improves the device's adaptability to complex fluid mechanical conditions (such as variable flow rate and pressure), greatly enhancing its adjustment flexibility and applicability. The invention utilizes the elastic force of spring 26 to allow the overlapping plate 28 to move flexibly within the rectangular groove 22, driving the limiting plate 29. When blade installation is required, the limiting plate 29 is simply inserted into the limiting slot 21 for fixation; during disassembly, external force is applied to disengage the limiting plate 29 from the limiting slot 21. This convenient assembly and disassembly method reduces the workload and operational difficulty for maintenance personnel, shortens maintenance time, reduces equipment downtime and maintenance costs due to blade replacement or repair, and improves the overall operating efficiency of the equipment.

[0139] This invention utilizes the sliding of the rotating slider 20 within the rotating groove 19 in the rotating structure to effectively prevent the spring 16 from twisting during the angle adjustment of the plug rod 3, ensuring the normal operation of the extension adjustment component and extending the service life of the spring 16. Simultaneously, the cooperation between the spring 10 and the sliding sleeve 11 allows the free rotation adjustment mechanism to automatically reset after adjustment, ensuring the accuracy and stability of the blade angle adjustment. Furthermore, the precise fit design between the limiting insert plate 29 and the limiting slot 21, and between the limiting plug rod 13 and the limiting plug hole 7, further enhances the overall stability of the device, reduces malfunctions caused by loose or damaged components, and effectively extends the service life of the device.

[0140] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0141] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A device for adjusting the degree of freedom of a rotating blade in fluid machinery, comprising a mounting cylinder (1) and a plurality of blade bodies (6) disposed circumferentially on the mounting cylinder (1), characterized in that: The mounting cylinder (1) and the blade body (6) are connected by a plug rod (3); one end of the plug rod (3) passes through the side wall of the mounting cylinder (1); The mounting cylinder (1) and the plug rod (3) are connected by a free rotation adjustment mechanism, which is used to adjust the angle of the blade body (6). The plug rod (3) is connected to the blade body (6) via a disassembly assembly, which is used for the detachable connection of the plug rod (3) and the blade body (6); an extension adjustment component is provided between the mounting cylinder (1) and the blade body (6), which is used to improve the connection stability between the mounting cylinder (1) and the blade body (6). The side wall of the mounting cylinder (1) is provided with a through hole (2) for inserting the plug rod (3); The free rotation adjustment mechanism includes: A plurality of limiting holes (7) are evenly arranged in a matrix at one end of the plug rod (3) away from the blade body (6); The limiting structure has a fixed end that is fixed to the inside of the mounting cylinder (1), and the movable end of the limiting structure is limited and engaged with any of the limiting holes (7); The limiting structure includes: The mounting groove (8) is formed on the inner wall of the mounting cylinder (1); A support rod (9) is fixed inside the mounting groove (8); The sliding sleeve (11) is slidably engaged with the upright rod (9), and the sliding sleeve (11) is elastically connected to the mounting groove (8); The connecting plate (12) is fixed on the sliding sleeve (11); A limiting rod (13) is fixed on the connecting plate (12), and the limiting rod (13) is inserted into any of the limiting holes (7); A spring (10) is sleeved on the outside of the upright rod (9). One end of the spring (10) is fixed to the mounting groove (8), and the other end of the spring (10) is fixed to the sliding sleeve block (11). The extension adjustment component includes: One side of the socket plate (14) is fixedly connected to the end of the plug rod (3), and the other side of the socket plate (14) is fixedly connected to the mounting slot (4) of the disassembly and assembly assembly. The second socket (15) is slidably sleeved on the outside of the plug rod (3), and the second socket (15) and the first socket (14) are elastically connected by the second spring (16). The second spring (16) is sleeved on the outside of the plug rod (3). One end of the second spring (16) is fixed to the first socket (14), and the other end of the second spring (16) is connected to the second socket (15) through a rotating structure. The rotating structure includes: The mounting ring (17) is fixedly connected to the end of the second spring (16) away from the first socket (14). The mounting ring (17) is movably disposed on one side of the second socket (15). The mounting ring (17) is movably sleeved on the outside of the plug rod (3). One end of the L-shaped plate (18) is fixedly connected to the mounting ring (17), and the other end of the L-shaped plate (18) is fixedly connected to a rotating slider (20). A rotating groove (19) is formed on the side wall of the second socket (15), and the rotating slider (20) is slidably disposed in the rotating groove (19).

2. The degree-of-freedom adjustment device for a fluid machinery rotating blade according to claim 1, characterized in that, The disassembly / assembly components include: The mounting slot (4) is fixedly connected to one end of the plug rod (3), and the mounting slot (4) has limit slots (21) on the front and rear sides respectively. A fixing block (5) is fixedly connected to one end of the blade body (6). Limiting plates (29) are respectively provided on the front and rear sides of the fixing block (5). The limiting plates (29) are inserted into the corresponding limiting slots (21). The limiting slots (21) and the limiting plates (29) are in a limiting fit. The limiting insert (29) is fixed with an overlapping plate (28), the overlapping plate (28) is slidably disposed in the fixing block (5), and the limiting insert (29) penetrates the side wall of the fixing block (5); The overlapping plate (28) is slidably disposed in the fixing block (5) through a rectangular groove (22), and the rectangular groove (22) is formed on the inner side wall of the fixing block (5); A reciprocating structure is provided between the rectangular groove (22) and the overlapping plate (28).

3. The degree-of-freedom adjustment device for a fluid machinery rotating blade according to claim 2, characterized in that, The reciprocating structure includes: A strip-shaped mounting groove (23) is formed on the side wall of the rectangular groove (22); Cutting block (24) is fixed in the middle of the strip-shaped placement groove (23); A horizontal fixing rod (25) is fixed in the strip-shaped mounting groove (23), and the horizontal fixing rod (25) passes through the cutting block (24); Two movable sleeves (27) are provided, and the two movable sleeves (27) are respectively arranged on both sides of the cutting block (24). The movable sleeves (27) are slidably engaged with the strip-shaped placement groove (23) and the horizontal fixing rod (25). The movable sleeves (27) are fixed with the corresponding overlapping plate (28). There are two springs (26), which are respectively set on both sides of the cutting block (24). Both springs (26) are sleeved on the horizontal fixing rod (25). One end of the spring (26) is fixed to one side of the cutting block (24), and the other end of the spring (26) is fixed to the corresponding movable sleeve block (27).

4. A method for adjusting the degree-of-freedom adjustment device of a fluid machinery rotating blade, using the degree-of-freedom adjustment device of any one of claims 1-3, characterized in that, include: The blade body (6) is connected to one end of the plug rod (3) through the disassembly assembly; After determining the angle of the blade body (6), the other end of the plug rod (3) is passed through the side wall of the mounting cylinder (1), and the plug rod (3) is fixed using the free rotation adjustment mechanism. The blade body (6) is securely connected to the mounting cylinder (1) by means of the extension adjustment component; When the blade body (6) needs to be replaced, the blade body (6) is removed from the plug rod (3) by the disassembly and assembly assembly.

Images