Disc part and gas turbine

Abstract

The utility model belongs to the technical field of gas turbines, and discloses a disc part and a gas turbine. The disc part comprises a disc part body and a plurality of disc part branches, the disc part body is disc-shaped, the disc part body takes the rotating shaft as a rotating center, and a round hole is formed in the middle; each disc part branch is annular, each disc part branch and the disc part main body are coaxially arranged and connected to the end face of the disc part main body, and the disc part main body and the multiple disc part branches are spliced and formed. According to the disc part and the gas turbine, the disc part main body and the disc part branches are spliced and formed, so that the disc part main body and the disc part branches are independently manufactured, during material preparation, the disc part main body and the disc part branches are separately prepared, the total size of a blank is obviously smaller than that of a scheme in the prior art, and the purchase cost of materials is reduced; and meanwhile, the total machining amount for manufacturing the disc parts is reduced, and the machining difficulty for manufacturing the disc parts is lowered.

Description

Technical Field

[0001] This utility model relates to the field of gas turbine technology, and in particular to a disc-shaped component and a gas turbine. Background Technology

[0002] Discs are crucial components of gas turbines and aero engines. They connect with corresponding shafts, blades, and other parts to form rotor assemblies. The compressor disc performs work on the air flowing through it, increasing air pressure to supply high-energy airflow to the combustion chamber. The turbine disc, as the hot-end component, converts the high-temperature, high-pressure combustion gas into rotational mechanical energy, thereby driving the compressor. Engine discs operate at high speeds and are subjected to aerodynamic and centrifugal loads. The turbine disc operates at high temperatures and is subjected to complex loads including aerodynamic, centrifugal, and thermal loads. Discs require high-performance materials with excellent low-cycle fatigue life and durability within their operating temperature range, as well as good creep resistance. As engine performance continues to improve, the material performance requirements for discs also increase. Damaged discs require complete replacement, resulting in high repair costs. Discs often have branches, such as sealing grates; during machining, the blank includes these branches, leading to significant material removal and higher material costs.

[0003] Therefore, there is an urgent need to design a disc-shaped component and a gas turbine to solve the above problems. Utility Model Content

[0004] One objective of this invention is to provide a disc-shaped component that can save on material costs, reduce the amount of material removed during blank processing, and lower the processing difficulty of the disc-shaped component.

[0005] Another objective of this invention is to provide a gas turbine with lower manufacturing costs and reduced processing difficulty.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Disk-type components, including:

[0008] The main body of the disc is disc-shaped;

[0009] Several disc-shaped branches, each of which is ring-shaped, are coaxially arranged with the main body of the disc and connected to the end face of the main body of the disc. The main body of the disc and the several disc-shaped branches are spliced ​​together to form the disc body.

[0010] As an alternative, the main body of the aforementioned disc and the aforementioned disc branches are connected by bolts, riveting, or welding.

[0011] As an optional solution, the aforementioned disk component branches include:

[0012] The connecting part is provided with the bolt threaded through it and connected to the main body of the disc, or the connecting part is riveted to the end face of the main body of the disc, or the connecting part is welded to the end face of the main body of the disc, or the connecting part is welded to the end face of the main body of the disc.

[0013] The vertical portion connects to the aforementioned connecting portion and extends along the rotation axis of the aforementioned disc branch;

[0014] A functional part is connected to the end of the vertical part that is away from the connecting part, and the functional part is formed by extending radially from the end of the vertical part that is away from the connecting part.

[0015] As an alternative, the aforementioned functional part is constructed as a sealing grate extending radially.

[0016] As an alternative, the wear resistance of the aforementioned disc branch is higher than that of the aforementioned disc body.

[0017] As an optional solution, the aforementioned functional parts are used for load-bearing.

[0018] As an alternative, the strength grade of the aforementioned disc branch material is higher than that of the aforementioned disc body material.

[0019] As an alternative, the aforementioned functional part is constructed in the shape of a flexible hairpin.

[0020] As an optional solution, the above disk branch settings have two options, among which,

[0021] The two aforementioned disk branches are respectively located on the two end faces of the disk body; or

[0022] The two aforementioned disk branches are simultaneously located on the same end face of the disk body.

[0023] Gas turbines, including the aforementioned disc-type components.

[0024] The beneficial effects of this utility model are as follows:

[0025] This utility model provides a disc-shaped component, which is formed by splicing the disc body and disc branches together, allowing the disc body and disc branches to be manufactured independently. During material preparation, the first material preparation component of the existing one-piece molded disc-shaped component is as follows: Figure 2 As shown, the blank has a large volume and requires a large amount of machining, while the disc-shaped part in this embodiment, such as Figure 3 As shown, the main body and branches of the disc are prepared separately as the second batch of blanks. The total volume of the blank is significantly smaller than that of the existing technology, which reduces the material procurement cost and also reduces the total amount of processing required to manufacture disc-shaped parts, thus reducing the processing difficulty of manufacturing disc-shaped parts.

[0026] This utility model also provides a gas turbine including the aforementioned disc-shaped component. By employing the aforementioned disc-shaped component, the gas turbine achieves lower manufacturing costs and reduced processing difficulty. Attached Figure Description

[0027] Figure 1 This is a cross-sectional view of the disc-shaped component provided in this embodiment of the utility model;

[0028] Figure 2 This is a cross-sectional view of the first prefabricated component provided by existing technology;

[0029] Figure 3 This is a cross-sectional view of the second material preparation component provided in this embodiment of the present utility model;

[0030] Figure 4 This is a cross-sectional view of a disc-like component provided in another embodiment of this utility model.

[0031] In the picture:

[0032] 10. Disc body; 20. Disc branch; 21. Connecting part; 22. Vertical part; 23. Functional part; 231. Sealing grate teeth; 232. Bearing arm; 30. Bolt; 1A. First spare part; 1B. Second spare part. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0037] This embodiment provides a disc-shaped component that can save material costs, reduce the amount of material removed during blank processing, and lower the processing difficulty of the disc-shaped component. For example... Figure 1 As shown, the disc-like component includes a disc body 10 and several disc branches 20. The disc body 10 is disc-shaped. Specifically, the disc body 10 has a circular hole in the middle with the rotation axis as the rotation center. Each disc branch 20 is annular and is coaxially arranged with the disc body 10 and connected to the end face of the disc body 10. The disc body 10 and several disc branches 20 are spliced ​​together to form the component.

[0038] The aforementioned disc-shaped component is formed by splicing the disc body 10 and the disc branch 20, allowing the disc body 10 and the disc branch 20 to be manufactured independently. During material preparation, the first material preparation component 1A of the existing one-piece molded disc-shaped component is as follows: Figure 2 As shown, the blank has a large volume and requires a large amount of machining, while the disc-shaped part in this embodiment, such as Figure 3 As shown, the main body 10 and the branch 20 of the disc are prepared separately as the second pre-prepared part 1B. The total volume of the blank is significantly smaller than that of the existing technology, which reduces the material procurement cost and also reduces the total processing amount of manufacturing disc parts, thus reducing the processing difficulty of manufacturing disc parts.

[0039] Optionally, the main body 10 of the disc and the branch 20 of the disc are detachably connected. Thus, if the branch 20 of the disc is damaged after long-term use, the branch 20 of the disc can be replaced separately. Under normal circumstances, the probability of the main body 10 of the disc being damaged is relatively small, thus reducing the cost of replacing parts.

[0040] Specifically, the main body 10 of the disc and the branch 20 of the disc are connected by bolts 30. The bolt connection ensures that there is sufficient connection strength between the branch 20 of the disc and the main body 10 of the disc, and allows for detachment between the two.

[0041] Furthermore, such as Figure 1 As shown, the disc-shaped component includes a connecting portion 21, a vertical portion 22, and a functional portion 23 connected in sequence. A bolt 30 passes through the connecting portion 21 and is threadedly connected to the disc body 10. The vertical portion 22 is connected to the connecting portion 21 and extends along the rotation axis of the disc branch 20. The functional portion 23 is connected to the end of the vertical portion 22 opposite to the connecting portion 21, and is formed by radially extending from the end of the vertical portion 22 opposite to the connecting portion 21. With this configuration, the connecting portion 21 provides a large connection position for the disc body 10 and the disc branch 20. This configuration is not limited to connection via bolts 30; other connection methods can also be used. The functional portion 23 performs the corresponding function of the disc branch 20.

[0042] In this embodiment, as Figure 1 As shown, the cross-section of the disk branch 20 is U-shaped. In another embodiment, as... Figure 4 The disk branch 20 shown on the right is Z-shaped, but this is not specified here.

[0043] Optionally, in other embodiments, the disk branch 20 can also be connected by riveting or welding, which is not limited here. Accordingly, the connecting part 21 is riveted to the end face of the disk body 10, or the connecting part 21 is welded to the end face of the disk body 10. Similarly, the provision of the connecting part 21 can increase the area of ​​the riveting or welding connection surface, thereby ensuring the connection strength. Among them, electron beam welding can be used, which is efficient and fast.

[0044] Optionally, such as Figure 1 As shown, the functional part 23 is constructed as a sealing grate 231 extending radially. It can be understood that the disc branch 20 can be a sealing grate disc.

[0045] Furthermore, under these working conditions, the sealing grate teeth 231 frequently experience wear during operation. To improve the overall service life, the wear resistance of the disc branch 20 is higher than that of the disc body 10. That is, the sealing grate teeth 231 and the disc body 10 are made of different materials.

[0046] Optionally, functional part 23 is used for load-bearing. See details. Figure 1 The lower middle disc branch 20 can be understood as a load-bearing arm disc, and the corresponding functional part is the load-bearing arm 232, whose main function is to bear external forces.

[0047] Furthermore, under this working condition, the strength grade of the material of the disc branch 20 is higher than that of the material of the disc body 10, which can withstand greater external forces without failure or other problems.

[0048] In another embodiment (not shown), functional part 23 is configured as an elastic hairpin. It should be noted that the above three cases are merely examples, and other forms of functional part 23 will not be described in detail here.

[0049] Of course, the main body 10 and the branch 20 of the disk can also be made of the same material, which is not limited here.

[0050] Optionally, there are two disk branch 20s. In other embodiments, there may be multiple disk branch 20s, which is not limited here.

[0051] In an optional embodiment, such as Figure 1 As shown, the two disk branches 20 are respectively located on the two end faces of the disk body 10.

[0052] In an optional embodiment, the two disk branches 20 are simultaneously disposed on the same end face of the disk body 10.

[0053] It should be noted that, regardless of whether there are two or more disk branch 20 settings, they can be disk branch 20 with the same function, or they can be two different functions. Figure 1 Or multiple disk branches with more functions 20, which are not limited here.

[0054] This embodiment also provides a gas turbine including the aforementioned disc-shaped component. By employing the aforementioned disc-shaped component, the gas turbine achieves lower manufacturing costs and reduced processing difficulty.

[0055] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A disc-like member, characterized by, The disc-shaped disc main body (10) is connected with a plurality of disc branches (20) through bolts (30), riveting or welding. The disc branch (20) comprises: a connecting portion (21) which is threadedly connected with the disc main body (10) through the bolt (30), or is riveted or welded with the end face of the disc main body (10); 2. A disc-like article according to claim 1, wherein a vertical portion (22) which is connected with the connecting portion (21) and extends along the rotation axis of the disc branch (20); 3. A disc-like member according to claim 2, wherein a functional portion (23) which is connected with one end of the vertical portion (22) away from the connecting portion (21) and is formed by the one end of the vertical portion (22) extending radially. The functional portion (23) is configured as a radial sealing bar (231). The wear resistance of the disc branch (20) is higher than that of the disc main body (10). The functional portion (23) is used for force bearing.

4. A disc-like member according to claim 3, wherein The strength grade of the material of the disc branch (20) is higher than that of the disc main body (10).

5. A disc-like member according to claim 4, wherein The functional portion (23) is configured as an elastic hairpin.

6. The disk-like article of claim 3, wherein The disc branch (20) is provided with two, wherein, 7. A disc-like member according to claim 6, wherein the two disc branches (20) are provided on the two end faces of the disc main body (10) one by one; or 8. The disk-like article of claim 3, wherein the two disc branches (20) are provided on the same end face of the disc main body (10) at the same time.

9. A disc-like member according to any one of claims 1-8, characterized in that The disc comprises the disc as claimed in any one of claims 1-9. ​ ​ 10. A gas turbine engine characterized by, ​

Images