CN102251811A - Radial flow type turbine with splitter blade - Google Patents
Radial flow type turbine with splitter blade Download PDFInfo
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- CN102251811A CN102251811A CN201110195624XA CN201110195624A CN102251811A CN 102251811 A CN102251811 A CN 102251811A CN 201110195624X A CN201110195624X A CN 201110195624XA CN 201110195624 A CN201110195624 A CN 201110195624A CN 102251811 A CN102251811 A CN 102251811A
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Abstract
The invention aims at providing a radial flow type turbine with a splitter blade. The radial flow type turbine comprises a volute casing, a stator blade cascade and a rotor blade impeller, wherein the stator blade cascade comprises a stator blade group, the rotor blade impeller comprises a rotor blade group and further comprises the splitter blade, the splitter blade is mounted between two long blades of rotor blades, stator blade cascade flow passages are formed between adjacent stator blades respectively and rotor blade impeller flow passages are formed between the adjacent rotor blades respectively. since the short blade with smaller size is added between the long blades of the rotor blade impeller, the viscosity at an outlet of the blades can be reduced effectively so that airflow at the outlet cannot be blocked easily in the situation that working conditions change; the leaving loss of the impeller is reduced; as for a centripetal turbine with greater enthalpy drop, an inlet is positioned in a high-temperature and high-pressure harsh working environment, and the splitter blade can distribute the load onto more blades under the situation that the geometrical conditions of the outlet are unchanged, thereby being conductive to reduction the requirements on the strength of each blade; after the splitter blade is added in the impeller, the overall efficiency is improved.
Description
Technical field
What the present invention relates to is a kind of turbine.
Background technique
Along with rising steadily of global energy price and being on the rise of environmental pollution, energy-saving and emission-reduction have received increasing concern.Radial turbine has utilized coriolis force free of losses acting, has bigger acting ability and higher efficient, have compact structure in addition, manufacturing process is simple, and advantages such as greater efficiency is arranged under the less design condition of flow, the effect in the energy industry in future is with more and more significant.
Traditional runoff turbine mostly is single-stage and does not have splitterr vanes.Make impeller reach higher efficient, just must select the suitable number of blade, if the number of blade very little, can cause that pressure gradient increases, boundary layer thickening and then make decrease in efficiency; And the number of blade can increase the obstruction in air current flow frictional loss and Ye Dao outlet port when too much, also makes decrease in efficiency.And because leaf road discharge area is too small, it is big that outlet velocity becomes, and causes leaving loss to increase, and makes decrease in efficiency.
Summary of the invention
The object of the present invention is to provide a kind of radial turbine that has splitterr vanes that flow effect is good, energy loss is little, isentropic efficiency is high.
The object of the present invention is achieved like this:
A kind of radial turbine that has splitterr vanes of the present invention, comprise spiral case, stator blade leaf grating, movable vane impeller, the stator blade leaf grating comprises the stator blade group, the movable vane impeller comprises the rotor blade group, it is characterized in that: also comprise splitterr vanes, splitterr vanes are installed between two linear leafs of rotor blade, constitute stator blade leaf grating runner between the adjacent stator blade, constitute the movable vane impeller channel between the adjacent rotor blades.
The present invention can comprise:
1, described stator blade leaf grating is convergent or scaling type.
2, the described splitterr vanes length 0.6-0.65 that is linear leaf length doubly.
3, the bias of described splitterr vanes in runner is between 0.4-0.5.
Advantage of the present invention is: the present invention adds the less short blade of size between the linear leaf of movable vane impeller, can effectively reduce the outlet denseness of blade, makes it under the situation of power condition changing, and exit flow is difficult for blocking; Reduced the leaving loss of impeller; For the bigger inward flow turbine of enthalpy drop, import is in the abominable working environment of high temperature, high pressure, and splitterr vanes can to more blade, help load sharing to reduce the requirement of strength of individual blade exporting under the constant situation of geometric condition; The whole efficiency of impeller after adding splitterr vanes also increases.
Description of drawings
Fig. 1 is a meridian stream interface schematic representation of the present invention;
Fig. 2 is a structural representation of the present invention;
Fig. 3 is a complete cycle air inlet planar effect picture of the present invention;
Fig. 4 is a partial-air admission planar effect picture of the present invention;
Fig. 5 is the blade wheel structure schematic representation that the present invention has splitterr vanes;
Fig. 6 is the plane cascade schematic representation that the present invention has splitterr vanes.
Embodiment
For example the present invention is done description in more detail below in conjunction with accompanying drawing:
In conjunction with Fig. 1～6, radial turbine is the device that the energy of engine exhaust is changed into mechanical work among the present invention.Radial turbine is made up of spiral case 4, stator blade leaf grating (row's stator blade 1), movable vane impeller (row's rotor blade 2) etc.Combustion gas radially enters the stator blade leaf grating through spiral case 4 guiding, constitutes runner 5 between the adjacent stator blade 1.Step-down when gas flow is crossed runner 5, cooling, speedup, expansion make pressure can change kinetic energy into.The high velocity air that is flowed out by the runner 5 that forms between the stator blade 1 impacts the movable vane impeller, and continues expansion working in the formed runner 6 between rotor blade 2, promotes the rotation of movable vane impeller.Stator blade leaf grating runner 5, its form can be gradual shrinkage or scaling type, comprises single-stage and multistage, adopts complete cycle air inlet (referring to accompanying drawing 3) or partial-air admission (referring to accompanying drawing 4).The movable vane impeller comprises single-stage or multistage, and splitterr vanes are divided into single splitterr vanes and double split flow blade by the number that adds between per two linear leafs.When getting single splitterr vanes 3 (referring to accompanying drawing 1 and accompanying drawing 5), its length is 0.6-0.65 times of linear leaf length.In conjunction with Fig. 6, it is that 1 to be biased to next linear leaf pressure side 8 duration be 0 (the pitch ratio between length, splitterr vanes and length, the linear leaf) that splitterr vanes 3 are biased in the runner 7 durations of a last linear leaf suction surface, then splitterr vanes 3 should be placed near a last linear leaf suction surface place, and its bias is between 0.4-0.5.The leaf grating physical dimension of splitterr vanes need be determined by the through-flow situation and the flow field analysis of whole single-stage or multistage runoff turbine.
The material that stator blade leaf grating among the present invention, movable vane impeller, wheel cap, wheel hub use is refractory alloy.Blade can be directly on impeller milling be shaped, or whole accurate casting forming is in conjunction with processes manufacturings such as correct grinding, polishings.Manufacture process is abideed by the similar manufacturer's standard of axial-flow turbine.
Claims (5)
1. radial turbine that has splitterr vanes, comprise spiral case, stator blade leaf grating, movable vane impeller, the stator blade leaf grating comprises the stator blade group, the movable vane impeller comprises the rotor blade group, it is characterized in that: also comprise splitterr vanes, splitterr vanes are installed between two linear leafs of rotor blade, constitute stator blade leaf grating runner between the adjacent stator blade, constitute the movable vane impeller channel between the adjacent rotor blades.
2. a kind of radial turbine that has splitterr vanes according to claim 1 is characterized in that: described stator blade leaf grating is convergent or scaling type.
3. a kind of radial turbine that has splitterr vanes according to claim 1 and 2 is characterized in that: the 0.6-0.65 that described splitterr vanes length is linear leaf length doubly.
4. a kind of radial turbine that has splitterr vanes according to claim 1 and 2 is characterized in that: the bias of described splitterr vanes in runner is between 0.4-0.5.
5. a kind of radial turbine that has splitterr vanes according to claim 3 is characterized in that: the bias of described splitterr vanes in runner is between 0.4-0.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110195624XA CN102251811A (en) | 2011-07-13 | 2011-07-13 | Radial flow type turbine with splitter blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110195624XA CN102251811A (en) | 2011-07-13 | 2011-07-13 | Radial flow type turbine with splitter blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102251811A true CN102251811A (en) | 2011-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110195624XA Pending CN102251811A (en) | 2011-07-13 | 2011-07-13 | Radial flow type turbine with splitter blade |
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| CN (1) | CN102251811A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939148B (en) * | 2014-04-28 | 2015-09-30 | 哈尔滨工程大学 | A kind of radial turbine with many splitterr vanes |
| CN105840546A (en) * | 2016-03-25 | 2016-08-10 | 上海理工大学 | Centripetal fan |
| CN107882771A (en) * | 2017-10-18 | 2018-04-06 | 江苏大学 | A kind of Optimization Design of jet type self-suction centrifugal pump |
| CN110366631A (en) * | 2017-03-09 | 2019-10-22 | 通用电气公司 | Turbine airfoil arrangement comprising current divider |
| CN110469369A (en) * | 2019-08-20 | 2019-11-19 | 中国船舶重工集团公司第七一九研究所 | A kind of kW grade supercritical carbon dioxide radial turbine structure with splitterr vanes |
| CN111005770A (en) * | 2019-12-24 | 2020-04-14 | 哈尔滨工程大学 | Centripetal turbine with splitter blades |
| CN112729751A (en) * | 2020-12-30 | 2021-04-30 | 哈尔滨工业大学 | Test bed |
| CN112973322A (en) * | 2021-02-04 | 2021-06-18 | 内江市香趣食品有限公司 | Novel water smoke dust removal sulphur removal smoke abatement equipment |
| CN114776403A (en) * | 2021-12-29 | 2022-07-22 | 东方电气集团东方汽轮机有限公司 | Air inlet structure and method suitable for large enthalpy drop small-flow turbine |
| CN116291743A (en) * | 2023-05-18 | 2023-06-23 | 融通航空发动机科技有限公司 | Auxiliary power device for aircraft and combined mixed-flow turbine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US3726605A (en) * | 1969-06-30 | 1973-04-10 | H Bachl | Fluid-flow machine |
| EP1531233A2 (en) * | 2003-11-12 | 2005-05-18 | MTU Aero Engines GmbH | Gasturbine with vanes having different radial curvature |
| CN202165129U (en) * | 2011-07-13 | 2012-03-14 | 哈尔滨工程大学 | Radial flow type turbine with splitter vanes |
-
2011
- 2011-07-13 CN CN201110195624XA patent/CN102251811A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3726605A (en) * | 1969-06-30 | 1973-04-10 | H Bachl | Fluid-flow machine |
| EP1531233A2 (en) * | 2003-11-12 | 2005-05-18 | MTU Aero Engines GmbH | Gasturbine with vanes having different radial curvature |
| CN202165129U (en) * | 2011-07-13 | 2012-03-14 | 哈尔滨工程大学 | Radial flow type turbine with splitter vanes |
Non-Patent Citations (2)
| Title |
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| 李文福，郑群: "变叶片数和长短叶片对某跨音速向心汽轮机气动性能的影响", 《热力透平》 * |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939148B (en) * | 2014-04-28 | 2015-09-30 | 哈尔滨工程大学 | A kind of radial turbine with many splitterr vanes |
| CN105840546A (en) * | 2016-03-25 | 2016-08-10 | 上海理工大学 | Centripetal fan |
| CN110366631A (en) * | 2017-03-09 | 2019-10-22 | 通用电气公司 | Turbine airfoil arrangement comprising current divider |
| CN107882771A (en) * | 2017-10-18 | 2018-04-06 | 江苏大学 | A kind of Optimization Design of jet type self-suction centrifugal pump |
| CN110469369A (en) * | 2019-08-20 | 2019-11-19 | 中国船舶重工集团公司第七一九研究所 | A kind of kW grade supercritical carbon dioxide radial turbine structure with splitterr vanes |
| CN111005770B (en) * | 2019-12-24 | 2022-06-21 | 哈尔滨工程大学 | Centripetal turbine with splitter blades |
| CN111005770A (en) * | 2019-12-24 | 2020-04-14 | 哈尔滨工程大学 | Centripetal turbine with splitter blades |
| CN112729751A (en) * | 2020-12-30 | 2021-04-30 | 哈尔滨工业大学 | Test bed |
| CN112729751B (en) * | 2020-12-30 | 2023-10-27 | 哈尔滨工业大学 | Test bed |
| CN112973322A (en) * | 2021-02-04 | 2021-06-18 | 内江市香趣食品有限公司 | Novel water smoke dust removal sulphur removal smoke abatement equipment |
| CN114776403A (en) * | 2021-12-29 | 2022-07-22 | 东方电气集团东方汽轮机有限公司 | Air inlet structure and method suitable for large enthalpy drop small-flow turbine |
| CN114776403B (en) * | 2021-12-29 | 2023-12-26 | 东方电气集团东方汽轮机有限公司 | Air inlet structure and method suitable for large enthalpy drop small flow turbine |
| CN116291743A (en) * | 2023-05-18 | 2023-06-23 | 融通航空发动机科技有限公司 | Auxiliary power device for aircraft and combined mixed-flow turbine |
| CN116291743B (en) * | 2023-05-18 | 2023-07-21 | 融通航空发动机科技有限公司 | Auxiliary power device for aircraft and combined mixed-flow turbine |
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Application publication date: 20111123 |