CN109977593A - Super large specific discharge axial fixed blade propeller water turbine formula water turbine set increase-volume proposes effect design method - Google Patents
Super large specific discharge axial fixed blade propeller water turbine formula water turbine set increase-volume proposes effect design method Download PDFInfo
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- CN109977593A CN109977593A CN201910279893.0A CN201910279893A CN109977593A CN 109977593 A CN109977593 A CN 109977593A CN 201910279893 A CN201910279893 A CN 201910279893A CN 109977593 A CN109977593 A CN 109977593A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000000694 effects Effects 0.000 title claims abstract description 17
- 238000005457 optimization Methods 0.000 claims abstract description 9
- 230000009466 transformation Effects 0.000 claims abstract description 4
- 238000004458 analytical method Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- DOSMHBDKKKMIEF-UHFFFAOYSA-N 2-[3-(diethylamino)-6-diethylazaniumylidenexanthen-9-yl]-5-[3-[3-[4-(1-methylindol-3-yl)-2,5-dioxopyrrol-3-yl]indol-1-yl]propylsulfamoyl]benzenesulfonate Chemical compound C1=CC(=[N+](CC)CC)C=C2OC3=CC(N(CC)CC)=CC=C3C(C=3C(=CC(=CC=3)S(=O)(=O)NCCCN3C4=CC=CC=C4C(C=4C(NC(=O)C=4C=4C5=CC=CC=C5N(C)C=4)=O)=C3)S([O-])(=O)=O)=C21 DOSMHBDKKKMIEF-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005713 exacerbation Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- Hydraulic Turbines (AREA)
Abstract
The invention discloses a kind of super large specific discharge axial fixed blade propeller water turbine formula water turbine set increase-volumes to propose effect design method, and described method includes following steps: 1) specific discharge is chosen from tubular runner library in the new rotary wheel model of 2000L/S or more；2) blade spherical surface outer rim (1), blade spherical surface inner edge and blade outlet edge (2) repairing type is carried out to new rotary wheel model to optimize；3) transformation and optimization of lid is supported to new rotary wheel model.The present invention has mentality of designing clear, and the advantage of design principle simplicity can be substantially improved existing axial fixed blade propeller water turbine formula hydraulic turbine conveyance capacity using it, extend existing axial fixed blade propeller water turbine formula water turbine set range of operation, and the increase-volume for meeting power station proposes efficiency power.
Description
Technical field
The present invention relates to a kind of water turbine set increase-volumes to propose effect design method, especially a kind of super large specific discharge axial fixed blade propeller water turbine
Formula water turbine set increase-volume proposes effect design method.
Background technique
Currently, mentioning in effect axial flow fixed paddle type hydropower project in general increase-volume, main purpose is to remain operational head not
In the case where change, unit inflow-rate of water turbine is improved；Then it according to new water-power performance parameter, chooses and meets in existing axial flow runner library
The new runner of technical requirements, or new runner is researched and developed again.But also there is special case, for example some power stations owner requires to flow substantially
It improves, but reduces operating head polishing, so that unit output is increased by 20% or more, as a result unit discharge of hydraulic turbine is caused to be substantially improved, very
To the super large specific discharge for reaching 2300l/s or more, operating condition has exceeded existing fixed-blade propeller turbine range of operation,
The runner for meeting technical requirements cannot be found in runner library.
Summary of the invention
It is an object of the invention to provide a kind of super large specific discharge axial fixed blade propeller water turbine formula water that conveyance capacity can be substantially improved
Wheel unit increase-volume proposes effect design method.
It is realized the purpose of the present invention is technical solution in this way, a kind of super large specific discharge axial fixed blade propeller water turbine formula water wheels
Unit increase-volume proposes effect design method, and described method includes following steps: 1) choosing specific discharge from tubular runner library and exist
The new rotary wheel model of 2000L/S or more；2) blade spherical surface outer rim, blade spherical surface inner edge and blade is carried out to new rotary wheel model to go out
The optimization of waterside repairing type；3) transformation and optimization of lid is supported to new rotary wheel model.
Wherein, it is carried out in accordance with the following steps in the step 2:
(1) rated point is pressed, determines theoretical blade corner ψ in new rotary wheel model combined characteristic；
(2) blade spherical surface outer rim is extended out into cylindrical type runner indoor profile by curved surface variation tendency；
(3) web outer rim is cut down, extends to blade spherical surface inner edge on web outer edge surface；
(4) CFD meter is carried out using movable guide vane, runner and draft tube as combined calculation component by fluid technology of numerical simulation
Point counting analysis, the opposite hydraulic loss of both Main Analysis runner, draft tube compare with draft tube streamline distribution, then keep blade
Aerofoil profile is constant, carries out cutting optimization to blade outlet edge.
Wherein, in the step 3), Supporting cover is cut in rear size according to web outer rim and is designed.
When the separation of flow, vortex rope and severe exacerbation fluidised form occurs in non-volute fixed guide vane region, also wrapped in the step 3)
It includes and non-volute fixed guide vane is optimized；The streamline analyzed according to CFD optimizes repairing type or redesign to fixed guide vane；
It further include excellent to movable guide vane in the step 3) when adjacent activities guide vane head and fixed guide vane tail portion interfere
Change；Guide vane aerofoil profile presses former guide vane, maximum opening of guide vane is increased by 20%~25%, when its head occurs in opening process in movable guide vane
The case where portion and fixed guide vane tail portion are interfered shortens guide vane chord length by reducing guide vane number or keeps the constant maximum limit of guide vane number
Degree shortens guide vane chord length to avoid interference with problem；
It further describes, (four) small step in the step 2 is designed according to following process:Combined calculation component；Grid division；Boundary condition setting；Numeric value analysis；Parsing result analysis；Whether match reasonable；Whether
It is optimal target；Final scheme；When matching unreasonable, boundary condition setting is re-started；When not up to optimal objective
When, blade outlet edge is cut, grid is then repartitioned.
By adopting the above-described technical solution, the present invention has mentality of designing clear, the advantage of design principle simplicity is used
Existing axial fixed blade propeller water turbine formula hydraulic turbine conveyance capacity can be substantially improved in it, extend existing axial fixed blade propeller water turbine formula water turbine set operation model
It encloses, the increase-volume for meeting power station proposes efficiency power.
Detailed description of the invention
Detailed description of the invention of the invention is as follows:
Fig. 1 is blade repairing type schematic diagram of the invention；
Fig. 2 is blade outlet edge cutting schematic diagram of the invention.
Specific embodiment
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing, but the present invention does not limit to
In these embodiments, any improvement or substitution on the present embodiment essence spirit still falls within the claims in the present invention and is wanted
Seek the range of protection.
Embodiment 1: as shown in Figure 1, 2, a kind of super large specific discharge axial fixed blade propeller water turbine formula water turbine set increase-volume mentions effect design side
Method, described method includes following steps: 1) specific discharge is chosen from tubular runner library in the new runner mould of 2000L/S or more
Type；2) blade spherical surface outer rim 1, blade spherical surface inner edge and 2 repairing type of blade outlet edge is carried out to new rotary wheel model to optimize；3) to new
Rotary wheel model is supported the transformation and optimization of lid.
Wherein, it further describes, is carried out in accordance with the following steps in the step 2:
(1) rated point is pressed, determines theoretical blade corner ψ in new rotary wheel model combined characteristic；
(2) blade spherical surface outer rim 1 is extended out into cylindrical type runner indoor profile 4 by curved surface variation tendency；
(3) 3 outer rim of web is cut down, extends to blade spherical surface inner edge on 3 outer edge surface of web；
(4) CFD meter is carried out using movable guide vane, runner and draft tube as combined calculation component by fluid technology of numerical simulation
Point counting analysis, the opposite hydraulic loss of both Main Analysis runner, draft tube compare with draft tube streamline distribution, then keep blade
Aerofoil profile is constant, carries out cutting optimization to blade outlet edge 2.
Wherein, in the step 3), Supporting cover is cut in rear size according to 3 outer rim of web and is designed.
In Fig. 1 of the invention, bold portion is the web outer rim and blade outer rim after cutting down, and dotted portion is not cut
The web outer rim and blade outer rim subtracted.
Dotted line in Fig. 2 is part to be cut.
When the separation of flow, vortex rope and severe exacerbation fluidised form occurs in non-volute fixed guide vane region, further include in the step 3)
Non- volute fixed guide vane is optimized；The streamline analyzed according to CFD optimizes repairing type or redesign to fixed guide vane；
When movable guide vane is in opening process, there is its head and when fixed guide vane tail portion interferes in movable guide vane, the step
It is rapid 3) in further include to movable guide vane optimize；Guide vane aerofoil profile presses former guide vane, and maximum opening of guide vane is increased by 20%~25%, works as activity
There is the case where its head and interference of fixed guide vane tail portion in opening process in guide vane, shortens guide vane string by reducing guide vane number
Long or holding guide vane number is constant to shorten guide vane chord length to greatest extent to avoid interference with problem；
(4) small step in the step 2 is designed according to following process:Combined calculation component；Grid division；Boundary condition setting；Numeric value analysis；Parsing result analysis；Whether match reasonable；Whether mesh is optimal
Mark；Final scheme；When matching unreasonable, boundary condition setting is re-started；When not up to optimal objective, to blade
Outlet edge is cut, and grid is then repartitioned.
Claims (4)
1. a kind of super large specific discharge axial fixed blade propeller water turbine formula water turbine set increase-volume proposes effect design method, characterized in that the method packet
It includes following steps: 1) choosing specific discharge from tubular runner library in the new rotary wheel model of 2000L/S or more；2) to new runner
Model carries out blade spherical surface outer rim (1), blade spherical surface inner edge and the optimization of blade outlet edge (2) repairing type；3) to new rotary wheel model
It is supported the transformation and optimization of lid.
2. super large specific discharge axial fixed blade propeller water turbine formula water turbine set increase-volume as described in claim 1 proposes effect design method, feature
It is: is carried out in accordance with the following steps in the step 2:
(1) rated point is pressed, determines theoretical blade corner ψ in new rotary wheel model combined characteristic；
(2) blade spherical surface outer rim (1) is extended out into cylindrical type runner indoor profile (4) by curved surface variation tendency；
(3) web (3) outer rim is cut down, extends to blade spherical surface inner edge on web (3) outer edge surface；
(4) CFD meter is carried out using movable guide vane, runner and draft tube as combined calculation component by fluid technology of numerical simulation
Point counting analysis, the opposite hydraulic loss of both Main Analysis runner, draft tube compare with draft tube streamline distribution, then keep blade
Aerofoil profile is constant, carries out cutting optimization to blade outlet edge (2).
3. super large specific discharge axial fixed blade propeller water turbine formula water turbine set increase-volume as claimed in claim 2 proposes effect design method, feature
Be: in the step 3), Supporting cover is cut in rear size according to web (3) outer rim and is designed.
4. super large specific discharge axial fixed blade propeller water turbine formula water turbine set increase-volume as claimed in claim 3 proposes effect design method, feature
It is: further includes optimizing in the step 3) to non-volute fixed guide vane；The streamline analyzed according to CFD, it is excellent to fixed guide vane
Change repairing type or redesign；
Super large specific discharge axial fixed blade propeller water turbine formula water turbine set increase-volume as claimed in claim 3 proposes effect design method, it is characterized in that:
It further include optimizing in the step 3) to movable guide vane；Guide vane aerofoil profile presses former guide vane, and maximum opening of guide vane is increased by 20%~25%,
When the case where its head and fixed guide vane tail portion are interfered occurs in opening process in movable guide vane, shortened by reducing guide vane number
Guide vane chord length keeps guide vane number is constant to shorten guide vane chord length to greatest extent to avoid interference with problem；
Super large specific discharge axial fixed blade propeller water turbine formula water turbine set increase-volume as claimed in claim 2 or claim 3 proposes effect design method, feature
It is that (four) small step in the step 2 is designed according to following process:Combined calculation component；Grid division；
Boundary condition setting；Numeric value analysis；Parsing result analysis；Whether match reasonable；Whether target is optimal；
Final scheme；When matching unreasonable, boundary condition setting is re-started；When not up to optimal objective, to blade outlet edge
(2) it is cut, then repartitions grid.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910279893.0A CN109977593A (en) | 2019-04-09 | 2019-04-09 | Super large specific discharge axial fixed blade propeller water turbine formula water turbine set increase-volume proposes effect design method |
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| CN201910279893.0A CN109977593A (en) | 2019-04-09 | 2019-04-09 | Super large specific discharge axial fixed blade propeller water turbine formula water turbine set increase-volume proposes effect design method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111581870A (en) * | 2020-06-04 | 2020-08-25 | 重庆水轮机厂有限责任公司 | Design method for fixed guide vane of axial-flow propeller turbine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61232301A (en) * | 1985-04-05 | 1986-10-16 | Hitachi Ltd | Rotary vanes of axial flow turbine |
| CN1530538A (en) * | 2003-03-14 | 2004-09-22 | 哈尔滨电机厂有限责任公司 | Mixed-flow hydraulic turbine frequency-variable reel |
| CN108763690A (en) * | 2018-05-17 | 2018-11-06 | 华中科技大学 | A kind of hydraulic turbine fixed guide vane blade profile intelligent optimization method |
-
2019
- 2019-04-09 CN CN201910279893.0A patent/CN109977593A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61232301A (en) * | 1985-04-05 | 1986-10-16 | Hitachi Ltd | Rotary vanes of axial flow turbine |
| CN1530538A (en) * | 2003-03-14 | 2004-09-22 | 哈尔滨电机厂有限责任公司 | Mixed-flow hydraulic turbine frequency-variable reel |
| CN108763690A (en) * | 2018-05-17 | 2018-11-06 | 华中科技大学 | A kind of hydraulic turbine fixed guide vane blade profile intelligent optimization method |
Non-Patent Citations (3)
| Title |
|---|
| 叶翔敏: "基于CFD的四叶片贯流式水轮机增容改造研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
| 张慧珍等: "基于CFD 的低水头轴流式水轮机", 《水力发电》 * |
| 邵翔宇: "在CFD基础上分析叶片出水边切割对转轮性能的影响", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111581870A (en) * | 2020-06-04 | 2020-08-25 | 重庆水轮机厂有限责任公司 | Design method for fixed guide vane of axial-flow propeller turbine |
| CN111581870B (en) * | 2020-06-04 | 2023-04-07 | 重庆水轮机厂有限责任公司 | Design method for fixed guide vane of axial-flow propeller turbine |
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Application publication date: 20190705 |