Turbine shell and turbine
By setting circumferentially extending grooves on the surface of the vortex tongue, the cracks are guided to extend towards the inside of the turbine housing, which solves the problem of easy crack propagation in the turbine housing and improves the operating stability of the turbine.
Patent Information
- Application Number
- CN202520006394.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-02
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2035-01-02
AI Technical Summary
The vortex structure in the turbine housing is complex and prone to cracking under thermal strain and stress, leading to the risk of air or water leakage and reducing the stability of turbine operation.
A circumferentially extending groove is provided on the surface of the vortex tongue to guide the crack to extend into the inner side of the turbine housing, reducing the risk of the crack extending to the outer surface.
By guiding the cracks to extend inward, the risk of air or water leakage on the outer surface of the turbine housing or other parts is reduced, thereby improving the operational stability of the turbine.
Smart Images
Figure CN223549325U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of turbine technology, specifically relating to a turbine housing and a turbine. Background Technology
[0002] Turbines convert fluid energy (such as steam, gas, or water) into mechanical work. They play a crucial role in power generation, aviation, ship propulsion, and many industrial processes. However, the vortex structure within the turbine casing is complex and subject to significant thermal strain and stress during turbine operation, making it prone to cracking. Cracks in the vortex can easily propagate as the turbine continues to operate, increasing the risk of air or water leakage on the outer surface of the turbine casing or other parts, thus reducing the turbine's operational stability.
[0003] Therefore, there is a need in the field for a turbine housing that can improve the stability of turbine operation. Utility Model Content
[0004] To address the problems existing in the prior art, a turbine housing and turbine are proposed, which can improve the operating stability of the turbine.
[0005] This application provides the following solutions.
[0006] In a first aspect, this application provides a turbine housing, wherein a vortex is formed along the outer periphery of the turbine impeller, and a vortex channel with a cross-sectional area that gradually decreases from the beginning of the winding to the end of the winding is provided inside the turbine housing, and the turbine housing has a vortex tongue that separates the fluid in the vortex channel from the fluid that drives the turbine impeller to swirl.
[0007] The surface of the vortex tongue is provided with a groove extending circumferentially.
[0008] In some possible embodiments, the groove is provided on the side of the vortex tongue that fits against the vortex channel.
[0009] In some possible embodiments, the groove is provided on the side of the vortex tongue near the turbine impeller.
[0010] In some possible embodiments, a partition wall is provided on the vortex tongue, which divides the vortex channel into two channels;
[0011] The surface of the vortex tongue is provided with a first groove and a second groove, which are respectively located on both sides of the partition wall.
[0012] In some possible embodiments, the positions of the first groove and the second groove are symmetrical along the partition wall.
[0013] In some possible embodiments, the width of the groove is 0.1mm-20mm.
[0014] In some possible embodiments, the groove is an arc-shaped groove.
[0015] In a second aspect, this application provides a turbine, including a turbine housing and a turbine impeller. The turbine housing forms a vortex along the outer periphery of the turbine impeller. The turbine housing is provided with a vortex channel whose cross-sectional area gradually decreases from the beginning of the winding to the end of the winding. The turbine housing has a vortex tongue that separates the fluid in the vortex channel from the fluid that drives the turbine impeller to swirl.
[0016] The surface of the vortex tongue is provided with a groove extending circumferentially.
[0017] In some possible embodiments, the groove is provided on the side of the vortex tongue that fits against the vortex channel.
[0018] In some possible embodiments, the groove is provided on the side of the vortex tongue near the turbine impeller.
[0019] The turbine housing provided in this application embodiment has a circumferentially extending groove on the surface of the vortex tongue. The circumferentially extending groove can guide the cracks on the vortex tongue, so that the cracks generated on the vortex tongue extend to the inside of the volute. This can reduce the risk of air or water leakage on the outer surface or other parts of the turbine housing caused by cracks on the vortex tongue, thereby making the turbine operation more stable.
[0020] Other advantages of this application will be explained in more detail with reference to the following description and figures.
[0021] It should be understood that the above description is merely an overview of the technical solution of this application, so as to enable a clearer understanding of the technical means of this application and thus allow for its implementation in accordance with the contents of the specification. To make the above and other objects, features, and advantages of this application more apparent and understandable, specific embodiments of this application are illustrated below. Attached Figure Description
[0022] By reading the detailed description of the exemplary embodiments below, those skilled in the art will understand the advantages and benefits described herein, as well as other advantages and benefits. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:
[0023] Figure 1a This is a side sectional view of a turbine housing;
[0024] Figure 1b A front sectional view of a turbine housing;
[0025] Figure 2 A side sectional view of a turbine housing provided in an embodiment of this application;
[0026] Figure 3A front sectional view of a turbine housing provided in an embodiment of this application;
[0027] Figure 4 Another side sectional view of a turbine housing provided in an embodiment of this application;
[0028] Figure 5 Another front sectional view of a turbine housing provided in an embodiment of this application;
[0029] Figure 6 This is a side sectional view of a turbine provided in an embodiment of this application.
[0030] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts. Detailed Implementation
[0031] Exemplary embodiments of this application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of this application and to fully convey the scope of this application to those skilled in the art.
[0032] In the description of embodiments of this application, it should be understood that terms such as "comprising" or "having" are intended to indicate the presence of the disclosed features, numbers, steps, actions, components, portions, or combinations thereof in this specification, and do not exclude the possibility of the presence of one or more other features, numbers, steps, actions, components, portions, or combinations thereof. The terms "first," "second," etc., are used only for ease of description to distinguish identical or similar technical features and should not be construed as indicating or implying the relative importance or number of these technical features. Thus, a feature defined by "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of embodiments of this application, unless otherwise stated, the term "multiple" means two or more.
[0033] Unless otherwise stated, " / " signifies "or," for example, A / B can mean either A or B. "And / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. For ease of description, spatial relation terms such as "below," "under," "above," and "upper" may be used here to describe the relationship between one element or feature shown in the accompanying drawings and other elements or features. It will be understood that these spatial relation terms are intended to include directions other than those depicted in the accompanying drawings for devices in use or operation.
[0034] like Figure 1aand Figure 1b As shown, the turbine casing has a vortex channel 100 inside, with a cross-sectional area that gradually decreases from the beginning to the end of the winding process. The turbine casing also has a vortex tongue 200 that separates the fluid in the vortex channel from the fluid swirling in the turbine impeller. The vortex tongue 200 is subjected to significant thermal strain and stress during turbine operation, making it prone to cracking. Cracks in the vortex tongue 200 can easily propagate during continued turbine operation, increasing the risk of air or water leakage on the outer surface of the turbine casing or other parts, thus reducing the stability of turbine operation.
[0035] This application provides a turbine housing and a turbine, which can guide cracks on the turbine housing, reduce the risk of air or water leakage on the outer surface or other parts of the turbine housing, and improve the stability of turbine operation.
[0036] It should also be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.
[0037] See Figure 2 The figure is a side cross-sectional view of a turbine housing provided in an embodiment of this application.
[0038] like Figure 2 As shown in the embodiment of this application, the turbine housing forms a vortex along the outer periphery of the turbine impeller. The turbine housing has a vortex channel 100 inside, with the cross-sectional area gradually decreasing from the beginning of the winding to the end of the winding. The turbine housing has a vortex tongue 200 that separates the fluid in the vortex channel from the fluid that drives the turbine impeller to swirl. The surface of the vortex tongue 200 is provided with a groove 201 extending in the circumferential direction.
[0039] like Figure 3 As shown, the groove 201 in this embodiment can guide the cracks generated on the vortex tongue 200 to extend to the inside of the turbine housing rather than to the surface of the turbine housing. This can reduce the risk of air or water leakage on the outer surface or other parts of the turbine housing caused by cracks on the vortex tongue, thereby making the turbine operation more stable.
[0040] It should be noted that in this embodiment, the groove generally extends circumferentially to guide the crack. Therefore, this embodiment does not require the groove to extend strictly in the circumferential direction, and a certain degree of process error is permissible. In fact, setting a groove on the surface of the volute is less difficult than setting a through hole or slit, has less impact on the function of the volute, and the groove can already achieve a good guiding effect on the crack. In practical applications, the groove on the surface of the volute can be formed integrally by casting, or it can be formed by cutting after casting. This embodiment does not limit this.
[0041] In this embodiment, the width of the groove can be 0.1mm-20mm. Generally, a narrower groove provides better guidance for cracks, but it also increases the manufacturing difficulty. In practical applications, the width of the groove can be determined based on the turbine's dimensions and the required manufacturing precision. It should be noted that the groove in this embodiment can be an arc-shaped groove, a zigzag groove, a wavy groove, a sawtooth groove, or a groove of other shapes. This embodiment does not impose any limitations on these shapes.
[0042] As one possible implementation method, such as Figure 2 and Figure 3 As shown, in this embodiment, the groove 201 can be disposed on the side of the vortex tongue 200 that is in contact with the vortex channel 100. The groove 201, disposed on the side of the vortex tongue 200 that is in contact with the vortex channel 100, can guide cracks on the vortex tongue 200 to extend towards the inner side of the volute along the groove 201. It should be noted that, compared to the tip of the vortex tongue, the area of the side of the vortex tongue that is in contact with the vortex channel is larger. This makes the process of forming the groove by casting or cutting less difficult, and allows for a higher tolerance for casting or cutting errors, making it less likely to affect other functional structures in the turbine housing.
[0043] As another possible implementation, such as Figure 4 and Figure 5 As shown in the embodiment of this application, the groove 201 can be disposed on the side of the vortex tongue 200 near the turbine impeller. The groove 201, disposed on the side of the vortex tongue 200 near the turbine impeller, can also guide cracks on the vortex tongue 200 to extend towards the inner side of the volute along the groove 201. It should be noted that, compared to the tip of the vortex tongue, the area of the side of the vortex tongue near the turbine impeller is also larger. This makes the process of forming the groove by casting or cutting less difficult, and the tolerance for casting or cutting errors is higher, making it less likely to affect other functional structures in the turbine housing.
[0044] In the embodiments of this application, such as Figure 5 As shown, a partition wall 300 can be provided on the vortex tongue, dividing the vortex channel into two channels; the surface of the vortex tongue is provided with a first groove and a second groove (not shown in the figure), which are respectively provided on both sides of the partition wall. Typically, the positions of the first groove and the second groove can be symmetrical along the partition wall, and both the first groove and the second groove can be located close to the partition wall.
[0045] In summary, the grooves on the surface of the vortex tongue in this embodiment can guide cracks generated on the vortex tongue to extend towards the inside of the volute, reducing the risk of air or water leakage on the outer surface of the turbine housing or other parts caused by cracks on the vortex tongue, thereby improving the turbine's operational stability. Furthermore, setting grooves on the surface of the vortex tongue is less technically challenging than setting through holes or slits, and has less impact on the function of the vortex tongue.
[0046] Based on the turbine housing provided in the above embodiments, this application also provides a turbine.
[0047] like Figure 6 As shown, the turbine provided in this application embodiment includes a turbine housing 2000 and a turbine impeller 1000. The turbine housing 2000 forms a vortex along the outer periphery of the turbine impeller 1000. The turbine housing 2000 has a vortex channel 100 inside, with the cross-sectional area gradually decreasing from the beginning of the winding to the end of the winding. The turbine housing 2000 has a vortex tongue 200 that separates the fluid in the vortex channel 100 from the fluid that drives the turbine impeller to swirl. The surface of the vortex tongue 200 is provided with a groove 201 extending in the circumferential direction.
[0048] In this embodiment, the groove can be provided on the side of the vortex tongue that fits against the vortex channel. Alternatively, the groove can be provided on the side of the vortex tongue that is close to the turbine impeller.
[0049] In one possible implementation, a partition wall is provided on the vortex tongue, dividing the vortex channel into two channels; a first groove and a second groove are provided on the surface of the vortex tongue, respectively located on both sides of the partition wall. The positions of the first groove and the second groove can be symmetrical along the partition wall.
[0050] In practical applications, the width of the groove can range from 0.1mm to 20mm. The groove can be an arc-shaped groove.
[0051] It should be noted that the turbine in the embodiments of this application may include various components of the aforementioned turbine housing embodiments, and achieve the same effect and function, which will not be repeated here.
[0052] While illustrative embodiments of this application have been detailed and described in the accompanying drawings and foregoing description, they should be considered illustrative rather than restrictive. It should be understood that only certain exemplary embodiments have been shown and described, and all variations and modifications intended to protect within the spirit and scope of the claimed invention are intended to be protected. It should be understood that while the use of terms such as preferred, preferred, or more preferred in the above description to indicate that such described features may be more desirable, it may not be necessary, and implementations without these features may be contemplated, for example, within the scope of the invention defined by the appended claims. When reading the claims, the use of terms such as “a,” “an,” “at least one,” or “at least a portion” is not intended to limit the claim to one item unless specifically stated otherwise in the claim. When the language “at least a portion” and / or “a portion” is used, an item may include a portion and / or the entire item unless specifically stated otherwise.
[0053] While the spirit and principles of this application have been described above with reference to several specific embodiments, it should be understood that this application is not limited to the disclosed specific embodiments, and the division of aspects does not imply that features in these aspects cannot be combined. This application is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims
1. A turbine housing, characterized in that, The turbine housing forms a vortex along the outer periphery of the turbine impeller. The turbine housing has a vortex channel with a cross-sectional area that gradually decreases from the beginning of the winding to the end of the winding. The turbine housing has a vortex tongue that separates the fluid in the vortex channel from the fluid that drives the turbine impeller to swirl. The surface of the vortex tongue is provided with a groove extending circumferentially.
2. The turbine housing according to claim 1, characterized in that, The groove is disposed on the side of the vortex tongue that fits against the vortex channel.
3. The turbine housing according to claim 1, characterized in that, The groove is provided on the side of the vortex tongue near the turbine impeller.
4. The turbine housing according to claim 1, characterized in that, The vortex tongue is provided with a partition wall, which divides the vortex channel into two channels. The surface of the vortex tongue is provided with a first groove and a second groove, which are respectively provided on both sides of the partition wall.
5. The turbine housing according to claim 4, characterized in that, The positions of the first groove and the second groove are symmetrical along the partition wall.
6. The turbine housing according to claim 1, characterized in that, The width of the groove is 0.1mm-20mm.
7. The turbine housing according to any one of claims 1-6, characterized in that, The groove is an arc-shaped groove.
8. A turbine, characterized in that, It includes a turbine housing and a turbine impeller. The turbine housing forms a vortex along the outer periphery of the turbine impeller. The turbine housing has a vortex channel with a cross-sectional area that gradually decreases from the beginning of the winding to the end of the winding. The turbine housing has a vortex tongue that separates the fluid in the vortex channel from the fluid that drives the turbine impeller to swirl. The surface of the vortex tongue is provided with a groove extending circumferentially.
9. The turbine according to claim 8, characterized in that, The groove is disposed on the side of the vortex tongue that fits against the vortex channel.
10. The turbine according to claim 8, characterized in that, The groove is provided on the side of the vortex tongue near the turbine impeller.