CN220791313U - Semi-open centripetal turbine with splitter blades - Google Patents
Semi-open centripetal turbine with splitter blades Download PDFInfo
- Publication number
- CN220791313U CN220791313U CN202322580847.9U CN202322580847U CN220791313U CN 220791313 U CN220791313 U CN 220791313U CN 202322580847 U CN202322580847 U CN 202322580847U CN 220791313 U CN220791313 U CN 220791313U
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- blade
- semi
- splitter
- main
- hub
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- 238000003754 machining Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 5
- 239000002918 waste heat Substances 0.000 description 5
- 238000000926 separation method Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Abstract
The utility model discloses a semi-open centripetal turbine with split blades, which adopts a semi-open design, wherein a rim positioned at the radial outer side of the blades is of an open design, the turbine comprises a hub and an outer shell, the hub is provided with a plurality of main blades along the outer edge, the split blades are arranged at the middle position of a flow channel formed between the suction surface of each main blade and the pressure surface of the adjacent main blade, the outer shell is arranged at one side of the hub and positioned at the radial outer edge of the main blade, and the main blades and the split blades are positioned between the outer shell and the hub. The utility model optimizes the pneumatic load distribution on the surface of the main blade, so that the semi-open centripetal turbine has higher efficiency in the high-rotating-speed full-working-condition range.
Description
Technical Field
The utility model relates to the technical field of semi-open centripetal turbines, in particular to a semi-open centripetal turbine with splitter blades.
Background
With the increasing importance of people on energy conservation and emission reduction, the development of a power generation technology utilizing gas waste heat and residual pressure has become a necessary trend, wherein a radial flow turbine structure is one of typical structures, and an adjustable guide vane structure is added at the inlet of the turbine, so that the turbine has higher power generation efficiency in a larger flow range.
At present, the existing adjustable guide vane structure drives a deflector rod to rotate through an adjusting rod outside a machine shell, the deflector rod drives an inner rotary table to rotate, and the rotary table drives all adjustable guide vanes to swing, so that the size of a runner is adjusted, and the efficiency is improved.
Because the working speed of the equipment is high and the working condition range is changed greatly, a centripetal turbine with a simple structure and higher pneumatic efficiency under the full working condition is required to be designed, so that the equipment can convert the internal energy in the waste heat and residual pressure tail gas into mechanical energy with high pneumatic efficiency, and the safe and stable operation of the equipment can be ensured.
Disclosure of Invention
The utility model aims to provide a semi-open centripetal turbine with split blades, which adopts a semi-open design, wherein a rim positioned on the radial outer side of the blades is of an open design, the turbine comprises a hub and an outer shell, a plurality of main blades are arranged on the hub along the outer edge, the split blades are arranged in the middle position of a flow channel formed between the suction surface of each main blade and the pressure surface of the adjacent main blade, the outer shell is arranged on one side of the hub and positioned at the radial outer edge of the main blade, and a plurality of main blades and a plurality of split blades are positioned between the outer shell and the hub.
Compared with the prior art, the utility model has the following beneficial effects: according to the utility model, the flow dividing blade is arranged in the middle of the flow passage between the suction surface of each main blade and the pressure surface of the adjacent main blade, after the waste heat and residual pressure tail gas flows in the radial direction from the outer edge of the impeller, the flow dividing blade is used for guiding the flow, the flow separation of the suction surface of the main blade is restrained in the flow passage by the air flow after the guiding, the pressure gradient distribution of meridian flow direction is improved, the pneumatic load distribution of the surface of the main blade is optimized, and the semi-open type centripetal turbine has higher efficiency in the high-rotating-speed full working condition range.
Drawings
FIG. 1 is a front view of the present utility model;
fig. 2 is a side view of the present utility model.
Reference numerals and names in the drawings are as follows:
1. a hub; 2. an outer housing; 3. a main blade; 31. a pressure surface; 32. a suction surface; 4. and a splitter blade.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1 and 2, the semi-open centripetal turbine with the splitter blades provided by the utility model adopts a semi-open design, a rim positioned on the radial outer side of the blades is of an open design, the turbine comprises a hub 1 and an outer shell 2, a plurality of main blades 3 are arranged on the hub 1 along the outer edge, splitter blades 4 are arranged on the middle position of a flow channel formed between a suction surface 32 of each main blade 3 and a pressure surface 31 of the adjacent main blade 3, after waste heat and residual pressure tail gas flows into the turbine along the radial direction through an inlet on the outer edge of the impeller, the flow guiding effect of the splitter blades 4 inhibits flow separation in a local area with larger curvature of the suction surface 32 of the main blade 3, the radial pressure gradient distribution is improved, the aerodynamic efficiency is improved, a plurality of the main blades 3 and a plurality of splitter blades 4 are formed with the hub 1 in a machining mode, the hub 1 bears radial, circumferential and axial main loads, and the outer shell 2 is arranged on one side of the hub 1 and positioned at the radial outer edge of the main blades 3, and the plurality of the main blades 3 and the splitter blades 4 are positioned between the outer shell 2 and the hub 1.
Specifically, the blade inflow angles of the main blade 3 and the splitter blade 4 are both 0 °.
Specifically, the radial blade height of the splitter blade 4 is the same as the radial blade height of the main blade 3, the circumferential blade thickness of the splitter blade 4 is the same as the circumferential blade thickness of the main blade 3, and the length of the splitter blade 4 along the meridian is 60% of the length of the meridian of the main blade 3 adjacent to the splitter blade 4.
In particular, the trailing edge outlet cross-sectional line of each main blade 3 is radially distributed as an involute.
Working principle: after the waste heat and residual pressure tail gas flows in from the outer edge of the impeller along the radial direction, the flow of the flow guide is guided by the flow guide blades 4, the flow separation of the suction surface 32 of the main blade 3 is restrained in the flow passage, the pressure gradient distribution of meridian flow direction is improved, the pneumatic load distribution of the surface of the main blade 3 is optimized, and the semi-open centripetal turbine has higher efficiency in the high-rotating-speed full-working-condition range.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Claims (7)
1. The utility model provides a take split vane's semi-open centripetal turbine, includes wheel hub (1), shell body (2), its characterized in that: the hub (1) is provided with a plurality of main blades (3) along the outward flange, every suction face (32) of main blade (3) all are provided with runner intermediate position that forms between pressure face (31) of main blade (3) adjacent to it and split blade (4), shell body (2) set up in one side of hub (1), and are located the radial outer fringe department of main blade (3), a plurality of main blade (3) and a plurality of split blade (4) all are located between shell body (2) and hub (1).
2. A semi-open centripetal turbine with splitter blades according to claim 1, wherein: a plurality of main blades (3) and a plurality of splitter blades (4) are formed between the hub (1) and the hub in a one-step machining mode.
3. A semi-open centripetal turbine with splitter blades according to claim 1, wherein: the blade inflow angles of the main blade (3) and the splitter blade (4) are 0 degrees.
4. A semi-open centripetal turbine with splitter blades according to claim 1, wherein: the radial blade height of the splitter blade (4) is the same as the radial blade height of the main blade (3).
5. A semi-open centripetal turbine with splitter blades according to claim 1, wherein: the thickness of the splitter blade (4) along the circumferential direction is the same as that of the main blade (3).
6. A semi-open centripetal turbine with splitter blades according to claim 1, wherein: the length of the splitter blade (4) along the meridian passage is 60% of the length of the meridian passage of the main blade (3) adjacent to the splitter blade.
7. A semi-open centripetal turbine with splitter blades according to claim 1, wherein: the trailing edge outlet cross section line of each main blade (3) is distributed as an involute in the radial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322580847.9U CN220791313U (en) | 2023-09-22 | 2023-09-22 | Semi-open centripetal turbine with splitter blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322580847.9U CN220791313U (en) | 2023-09-22 | 2023-09-22 | Semi-open centripetal turbine with splitter blades |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220791313U true CN220791313U (en) | 2024-04-16 |
Family
ID=90658117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322580847.9U Active CN220791313U (en) | 2023-09-22 | 2023-09-22 | Semi-open centripetal turbine with splitter blades |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220791313U (en) |
-
2023
- 2023-09-22 CN CN202322580847.9U patent/CN220791313U/en active Active
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