Turbine locking structure of axial flow supercharger

Abstract

The utility model relates to the technical field of axial flow superchargers, in particular to an axial flow supercharger turbine locking structure which comprises a turbine disc, tenon teeth, a locking block and an embedding groove, mortises distributed in a circular array mode are formed in the outer wall of the turbine disc, the tenon teeth are arranged in the mortises, the locking block is arranged on one side of the inner wall of each mortise, and the embedding groove is formed in the outer wall of the turbine disc. The turbine blade dismounting device comprises a locking block, stop blocks are arranged on the outer walls of the two sides of the locking block, bearings are embedded in the outer walls of the two sides of the locking block, through holes are formed in the stop blocks, and bolts are arranged in the through holes, so that the situation that the locking block is damaged when turbine blades are dismounted is avoided, and the dismounting efficiency of the locking block is guaranteed; damage to the locking block and the stop block is reduced, the disassembly and maintenance cost of the equipment is reduced, and the disassembly and maintenance efficiency of the equipment can be improved.

Description

Technical Field

[0001] This utility model relates to the field of axial flow turbocharger technology, and specifically to an axial flow turbocharger turbine locking structure. Background Technology

[0002] An axial-flow turbocharger mainly consists of a turbine and a compressor. When the engine is running, the high-temperature, high-pressure exhaust gas impacts the axial-flow turbine at a certain angle and high speed, causing the turbocharger rotor to rotate at high speed. The turbine and compressor impeller are rigidly connected via the turbocharger shaft, so the compressor impeller rotates at the same high speed, continuously compressing the air along the axial direction, forcing more air into the engine's combustion chamber, increasing the engine's intake pressure and volume, thereby enhancing the engine's power output. The axial-flow turbine rotor moves along the axial direction, and the exhaust gas flows axially over the turbine blades, driving the turbine to rotate.

[0003] The turbine locking structure of the axial turbocharger is mainly used to reliably fix the turbine blades on the turbine disk and prevent the turbine blades from moving axially and rubbing against the stator during operation. It is usually installed at the bottom of the tenon groove. The locking plate protrudes on both sides, one side of which cooperates with the bottom sides of the tenon groove, and the other side of which cooperates with the exhaust side of the tenon tooth, for axial fixation of the exhaust side of the turbine blades.

[0004] CN116372549A discloses a marine turbocharger locking plate assembly system and method. The marine turbocharger locking plate assembly system includes a base frame, a laser positioning device, a fixed base, a driven wheel mechanism, a first drive wheel mechanism, a second drive wheel mechanism, a first support base, a second support base, a boom, a U-shaped frame, a clamp, and a bending mechanism. The bending mechanism includes an L-shaped plate, a vertical mandrel, and a horizontal mandrel. The driven wheel mechanism, the first drive wheel mechanism, and the second drive wheel mechanism are used to rotate the main shaft to rotate the turbine disk. The first support base and the second support base are used to support the main shaft to prevent the turbine disk from rotating. Then, the locking plate and turbine blades are installed, and the horizontal mandrel and the vertical mandrel are used to bend the locking plate to lock the turbine blades. With the assistance of the above structure, the problem of low assembly efficiency of marine turbocharger locking plates is solved.

[0005] While the existing technology CN116372549A has many advantages in use, it still has the following problems: the maintainability of the locking block is not perfect. Because the two ends of the locking block need to be bent and locked during installation, the locking block needs to be broken during the subsequent disassembly of the turbine blades. This not only leads to high disassembly and maintenance costs, but also low disassembly and maintenance efficiency. Utility Model Content

[0006] To address the problems in the existing technology, this utility model provides a turbine locking structure for an axial flow turbocharger.

[0007] The technical solution adopted by this utility model to solve its technical problem is an axial flow turbocharger turbine locking structure, including a turbine disk, tenons, locking blocks and fitting grooves. The outer wall of the turbine disk has tenons arranged in a circular array. Tenons are provided inside the tenons. A locking block is provided on one side of the inner wall of the tenons. Blocks are provided on both outer walls of the locking block. Bearings are embedded in both outer walls of the locking block. Through holes are provided inside the block, and bolts are provided inside the through holes.

[0008] By adopting the above technical solution, the mortise and tenon teeth can be effectively positioned in the circumferential and radial directions by cooperating with each other. The locking block and the blocking block can further limit the axial movement of the tenon teeth, preventing axial displacement during high-speed rotation, which greatly improves the stability of the entire turbine structure. The bearing ensures the stability of the circumferential rotation angle of the blocking block. When the blocking block rotates 90 degrees, it is in a horizontal state relative to the turbine disk. At this time, the blocking block will not obstruct the trajectory of the tenon teeth entering the mortise, ensuring the installation efficiency of the tenon teeth. After the blocking block is reset, it can contact the outer wall of the turbine disk and the tenon teeth respectively, which can restrict and fix the tenon teeth inside the mortise.

[0009] Specifically, a main shaft is installed inside the turbine disk, and assembly holes are provided on the outer walls at both ends of the main shaft.

[0010] By adopting the above technical solution, the turbine disk can be assembled with other external components through the main shaft, and the assembly holes can ensure reliable connection between the turbine disk and other transmission components. As the rotation center shaft of the turbine disk, the main shaft provides stable support and transmission path for the turbine rotation. Through the connection between the main shaft and other components, it can be ensured that the rotational power of the turbine can be accurately transmitted, thus ensuring the normal operation of the turbocharger.

[0011] Specifically, the inner wall of the tenon groove is designed with an inclined shape, and the two sides of the inner wall of the tenon groove are provided with equally spaced parallel interlocking grooves.

[0012] By adopting the above technical solution, the inclined shape can better fit between the tenon and the mortise, increase the contact area and friction between the mortise and the mortise, and further improve the stability of the connection between the turbine blade and the turbine disk.

[0013] Specifically, the shape of the tenon teeth is adapted to the shape of the inner wall of the tenon groove, and the outer walls on both sides of the tenon teeth are equipped with equally spaced parallel interlocking blocks, which are located inside the interlocking groove.

[0014] By adopting the above technical solution, the shape matching ensures that the tenon can be accurately installed into the mortise and achieve a tight fit. The mating block and the mating groove cooperate to further enhance the connection strength and positioning accuracy between the tenon and the mortise and make the turbine blades more stable on the turbine disk, reducing vibration and wear caused by inaccurate fit.

[0015] Specifically, a turbine blade is installed through the outer wall of one side of the tenon, the turbine blade is located outside the turbine disk, and the turbine blade adopts a curved shape design.

[0016] By adopting the above technical solution, the bending design of the turbine blades conforms to the principles of fluid mechanics, which can better guide the airflow and improve the efficiency of the equipment in utilizing the airflow, thereby ensuring the boosting effect and working performance of the axial flow turbocharger.

[0017] Specifically, the locking block contacts the outer wall of the tenon, and the two blocking blocks are respectively distributed on both sides of the turbine disk, with the blocking blocks being interference-fitted into the bearing.

[0018] By adopting the above technical solution, after the blocking block is locked to the locking block by bolts, the locking block and the blocking block can directly apply axial locking force to the tenon, preventing the tenon from moving axially, thus forming a stable axial locking structure. This ensures that the turbine blades will not move axially during high-speed rotation, thus guaranteeing the reliability of the turbine disk structure.

[0019] Specifically, the locking block has screw holes on both sides of its outer wall, and one end of the bolt passes through the through hole and is threaded into the screw hole.

[0020] By adopting the above technical solution, the threaded connection provides sufficient connection strength between the locking block and the blocking block, ensuring that the connection between the locking block and the blocking block is firm and reliable. Furthermore, by tightening or loosening the bolts, the fixed position of the blocking block can be controlled to adapt to different working conditions and assembly requirements, thereby improving the flexibility and adjustability of the entire turbine locking structure.

[0021] The beneficial effects of this utility model are:

[0022] (1) The axial flow turbocharger turbine locking structure of the present invention has a blocking block that rotates ninety degrees and is in a horizontal state relative to the turbine disk. At this time, the blocking block will not block the trajectory of the tenon entering the mortise, thus ensuring the installation efficiency of the tenon. After the blocking block is reset, it can contact the turbine disk and the outer wall of the tenon respectively, thus enabling the restriction and fixation of the tenon inside the mortise.

[0023] (2) The axial flow turbocharger turbine locking structure described in this utility model, wherein the bolts and bearings can ensure that the blocking block is easy to disassemble and install, avoid damage to the locking block when disassembling the turbine blades, ensure the disassembly efficiency of the locking block, reduce the damage to the locking block and the blocking block, reduce the disassembly and maintenance cost of the equipment, and improve the disassembly and maintenance efficiency of the equipment. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Figure 1 This is a schematic diagram of the main structure of the turbine disk of this utility model;

[0026] Figure 2 This is an exploded view of the turbine disk structure of this utility model;

[0027] Figure 3 This is an enlarged schematic diagram of the tenon structure of this utility model;

[0028] Figure 4 This is a partially exploded view of the locking block structure of this utility model.

[0029] In the diagram: 1. Turbine disk; 11. Main shaft; 12. Tenon; 13. Fitting groove; 2. Tenon; 21. Turbine blade; 22. Fitting block; 3. Locking block; 31. Bearing; 32. Blocking block; 33. Through hole; 34. Bolt; 35. Screw hole. Detailed Implementation

[0030] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0031] To save manpower and improve efficiency, as one embodiment of this utility model, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the axial flow turbocharger turbine locking structure of this utility model includes a turbine disk 1, tenons 2, locking blocks 3, and fitting grooves 13. The outer wall of the turbine disk 1 is provided with tenons 12 arranged in a circular array. Tenons 2 are provided inside the tenons 12. A locking block 3 is provided on one side of the inner wall of the tenons 12. Blocks 32 are provided on both outer walls of the locking block 3. Bearings 31 are embedded in both outer walls of the locking block 3. Through holes 33 are provided inside the blocks 32. Bolts 34 are provided inside the through holes 33.

[0032] In use, the mortise 12 and tenon 2 work together to effectively position the turbine blade 21 and turbine disk 1 in the circumferential and radial directions. The locking block 3 and blocking block 32 can further limit the axial movement of the tenon 2, preventing axial displacement during high-speed rotation and greatly improving the stability of the entire turbine structure. The bearing 31 ensures the stability of the circumferential rotation angle of the blocking block 32. When the blocking block 32 rotates 90 degrees, it is horizontal relative to the turbine disk 1. At this time, the blocking block 32 will not obstruct the trajectory of the tenon 2 entering the mortise 12, ensuring the installation efficiency of the tenon 2. After the blocking block 32 is reset, it can contact the outer wall of the turbine disk 1 and the tenon 2 respectively, thus limiting and fixing the tenon 2 inside the mortise 12.

[0033] For connection to external components, for example, such as Figure 1 As shown, a main shaft 11 is installed inside the turbine disk 1, and assembly holes are opened on the outer walls at both ends of the main shaft 11.

[0034] In use, the turbine disk 1 can be assembled with other external components via the main shaft 11, and the assembly holes ensure reliable connection between the turbine disk 1 and other transmission components. The main shaft 11, as the rotation center shaft of the turbine disk 1, provides stable support and transmission path for the rotation of the turbine. Through the connection between the main shaft 11 and other components, it can be ensured that the rotational power of the turbine can be accurately transmitted, thus ensuring the normal operation of the turbocharger.

[0035] For assembly, exemplarily, such as Figure 2 As shown, the inner wall of the tenon groove 12 is designed with an inclined shape, and the two sides of the inner wall of the tenon groove 12 are provided with equally spaced parallel fitting grooves 13.

[0036] When in use, the inclined shape allows for a better fit between the tenon 12 and the tenon 2, increases the contact area and friction between the tenon 2 and the tenon 12, and further improves the stability of the connection between the turbine blade 21 and the turbine disk 1.

[0037] For assembly, exemplarily, such as Figure 2 As shown, the shape of the tenon 2 is adapted to the shape of the inner wall of the tenon groove 12, and the outer walls on both sides of the tenon 2 are equipped with equally spaced parallel interlocking blocks 22, which are located inside the interlocking groove 13.

[0038] When in use, the matching shape ensures that the tenon 2 can be accurately installed into the mortise 12 to achieve a tight fit. The mating block 22 and the mating groove 13 cooperate to further enhance the connection strength and positioning accuracy between the tenon 2 and the mortise 12, making the turbine blade 21 more securely installed on the turbine disk 1 and reducing vibration and wear caused by inaccurate fit.

[0039] To guide airflow, for example, such as Figure 3 As shown, a turbine blade 21 is installed on one side of the outer wall of the tenon 2 through the mortise 12. The turbine blade 21 is located outside the turbine disk 1 and the turbine blade 21 adopts a curved shape design.

[0040] When in use, the curved design of the turbine blades 21 conforms to the principles of fluid mechanics, which can better guide the airflow and improve the efficiency of the equipment in utilizing the airflow, thereby ensuring the boosting effect and working performance of the axial flow booster.

[0041] For locking, for example, such as Figure 4 As shown, the locking block 3 is in contact with the outer wall of the tenon 2, and the two blocking blocks 32 are respectively distributed on both sides of the turbine disk 1. The blocking blocks 32 are interference-fitted into the bearing 31.

[0042] When in use, after the blocking block 32 is locked to the locking block 3 by the bolt 34, the locking block 3 and the blocking block 32 can directly apply axial locking force to the tenon 2 to prevent the tenon 2 from moving axially. This forms a stable axial locking structure, ensuring that the turbine blade 21 will not move axially during high-speed rotation, thus ensuring the reliability of the turbine disk 1 structure.

[0043] To fix the usage location, for example, such as Figure 4 As shown, screw holes 35 are provided on both outer walls of the locking block 3, and one end of the bolt 34 is threaded through the through hole 33 and connected to the inside of the screw hole 35.

[0044] In use, the threaded connection provides sufficient connection strength between the locking block 3 and the blocking block 32, ensuring that the connection between the locking block 3 and the blocking block 32 is firm and reliable. Furthermore, by tightening or loosening the bolt 34, the fixed position of the blocking block 32 can be controlled to adapt to different working conditions and assembly requirements, thereby improving the flexibility and adjustability of the entire turbine locking structure.

[0045] When this utility model is in use, the blocking block 32 is rotated to rotate 90 degrees. The blocking block 32 is in a horizontal state relative to the turbine disk 1, and will not obstruct the trajectory of the tenon 2 entering the mortise 12.

[0046] Using the assembly holes opened on the outer walls at both ends of the main shaft 11, the turbine disk 1 is reliably connected to other external transmission components. The tenon 2 and the locking block 3 are installed inside the tenon 12. At this time, the fitting block 22 will be embedded in the fitting groove 13 on both sides of the inner wall of the tenon 12, and the locking block 3 is located at the bottom of the tenon 12.

[0047] After the tenon 2 is installed in place, the blocking block 32 is reset so that it contacts the outer wall of the turbine disk 1 and the tenon 2 respectively. Then, the bolt 34 is passed through the through hole 33 opened inside the blocking block 32 and threadedly connected to the screw holes 35 opened on both sides of the outer wall of the locking block 3. The bolt 34 is tightened so that the locking block 3 and the blocking block 32 apply axial locking force to the tenon 2 to prevent the tenon 2 from moving axially and form a stable axial locking structure.

[0048] When the axial turbocharger starts working, external power is transmitted to the turbine disk 1 through the transmission component connected to the main shaft 11, causing the turbine disk 1 to rotate at high speed around the main shaft 11, and the turbine blades 21 will rotate at high speed along with the turbine disk 1.

[0049] It should be noted that this utility model is a turbine locking structure for an axial flow turbocharger. All components in this utility model are known to those skilled in the art, and their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A turbine locking structure for an axial-flow turbocharger, characterized in that, The device includes a turbine disk (1), tenons (2), locking blocks (3), and fitting grooves (13). The outer wall of the turbine disk (1) is provided with tenons (12) arranged in a circular array. Tenons (2) are provided inside the tenons (12). A locking block (3) is provided on one side of the inner wall of the tenons (12). Blocks (32) are provided on both sides of the outer wall of the locking block (3). Bearings (31) are embedded in both sides of the outer wall of the locking block (3). A through hole (33) is provided inside the block (32). A bolt (34) is provided inside the through hole (33).

2. The axial flow turbocharger turbine locking structure according to claim 1, characterized in that, The turbine disk (1) is equipped with a main shaft (11), and assembly holes are provided on the outer walls at both ends of the main shaft (11).

3. The axial flow turbocharger turbine locking structure according to claim 1, characterized in that, The inner wall of the tenon (12) is designed with an inclined shape, and the two sides of the inner wall of the tenon (12) are provided with equally spaced parallel interlocking grooves (13).

4. The axial flow turbocharger turbine locking structure according to claim 1, characterized in that, The shape of the tenon (2) is adapted to the shape of the inner wall of the tenon groove (12), and the outer walls on both sides of the tenon (2) are equipped with equally spaced parallel interlocking blocks (22), which are located inside the interlocking groove (13).

5. The axial flow turbocharger turbine locking structure according to claim 1, characterized in that, The tenon (2) passes through the outer wall of one side of the tenon groove (12) and a turbine blade (21) is installed. The turbine blade (21) is located outside the turbine disk (1) and the turbine blade (21) adopts a curved shape design.

6. The axial-flow turbocharger turbine locking structure according to claim 1, characterized in that, The locking block (3) is in contact with the outer wall of the tenon (2), and the two blocking blocks (32) are respectively distributed on both sides of the turbine disk (1). The blocking blocks (32) are interference-fitted into the bearing (31).

7. The axial-flow turbocharger turbine locking structure according to claim 1, characterized in that, The locking block (3) has screw holes (35) on both sides of its outer wall, and the bolt (34) is threaded through the through hole (33) and connected to the screw hole (35) at one end.

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