CN101482083B - Ultra-low specific speed mixed-flow type turbine - Google Patents
Ultra-low specific speed mixed-flow type turbine Download PDFInfo
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- CN101482083B CN101482083B CN2009100284820A CN200910028482A CN101482083B CN 101482083 B CN101482083 B CN 101482083B CN 2009100284820 A CN2009100284820 A CN 2009100284820A CN 200910028482 A CN200910028482 A CN 200910028482A CN 101482083 B CN101482083 B CN 101482083B
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- rotary wheel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
An ultra-low specific speed mixed-flow turbine relates to a mixed-flow turbine and belongs to the technical field of energy and power. A main shaft in the invention is arranged on a bearing support, and the bearing support is arranged in the middle of the upper side of a cover plate; the lower side of the cover plate is provided with the runner crown of a low specific speed turbine; the end of the cover plate is fixedly connected with a seating ring; the runner band of the low specific speed turbine is relatively arranged below the runner crown of the low specific speed turbine; one end of the runner band of the low specific speed turbine is connected with the seating ring, and the other end is connected with a conical draft tube; a metal scroll casing is connected outside the seating ring and is arranged on a rest pier; 16 to 18 single-row annular negative camber guide vanes are arranged on the seating ring, and the runner blades of the low specific speed turbine are arranged inside the inner cavity between the runner crown of the low specific speed turbine and the runner band of the low specific speed turbine. The invention solves the technical problem that low specific speed mixed-flow turbine has low efficiency and complicated structure in the prior art.
Description
Technical field
The present invention relates to a kind of Francis turbine, belong to the energy source and power technical field.
Background technique
Conventional water turbine and the supporting composition hydraulic generator of generator unit are in order to generating, but the water turbine as prime mover also can be in order to drive other machinery, along with the use of development in other field of producing is more and more, the application in industries such as irrigation and drainage, water supply, chemical industry, fire-fighting, weaving, oil, processing of farm products at present constantly increases.The water turbine of non-generating usefulness exists than big-difference at aspect such as specific speed, workpiece, structure and some running parameter requirement and conventional water turbine, and these differences cause water movement difference, the design method difference in the water turbine.And at present this ultra-low specific speed mixed-flow type turbine is lacked research, so that efficient is very low, does not reach the requirement that makes full use of the water energy far away.
Summary of the invention
The technical problem that solves:
The invention provides a kind of ultra-low specific speed mixed-flow type turbine, it is low to have solved in the above-mentioned described prior art low-specific-speed mixed-flow wheel engine efficiency, baroque technical problem.
Technological scheme:
A kind of ultra-low specific speed mixed-flow type turbine comprises the into following ring of metal spiral case, seat ring, negative cruvature stator, low-specific-speed turbine runner blade, low-specific-speed rotary wheel of water turbine, low-specific-speed rotary wheel of water turbine crown, cover plate, bearing support, main shaft, buttress, the tapered draft tube of water; Main shaft is arranged on the bearing support, bearing support is arranged on the last middle side part of cover plate, the downside of cover plate is provided with low-specific-speed rotary wheel of water turbine crown, the fixedly connected seat ring in the end of cover plate, the below of low-specific-speed rotary wheel of water turbine crown is oppositely arranged ring under the low-specific-speed rotary wheel of water turbine, a low-specific-speed rotary wheel of water turbine end of ring down is connected with seat ring, and the other end is connected with tapered draft tube; The outside of seat ring connects metal spiral case, and metal spiral case is arranged on the buttress; 16～18 single-row annular negative cruvature stators are set on the seat ring, and low-specific-speed rotary wheel of water turbine crown and low-specific-speed rotary wheel of water turbine are provided with the low-specific-speed turbine runner blade in the cavity between the ring down.
The present invention also comprises water-collecting tray, and described water-collecting tray is positioned at ring below under the low-specific-speed rotary wheel of water turbine, and an end is connected with seat ring, and the other end is connected with tapered draft tube.The low-specific-speed of invention is between between the 40mKW to 60mKW.
The height b0 of negative cruvature stator of the present invention is 0.09～0.13 times of low-specific-speed rotary wheel of water turbine water intake diameter D1; The diameter D3 that the negative cruvature stator goes out the waterside is 0.9～1.15 times of low-specific-speed rotary wheel of water turbine water intake diameter D1, and the diameter D4 on negative cruvature stator water inlet limit is 1.1～1.3 times of low-specific-speed rotary wheel of water turbine water intake diameter D1.
Low-specific-speed rotary wheel of water turbine height B 0 of the present invention is 0.18～0.22 with the ratio of low-specific-speed rotary wheel of water turbine water intake diameter D1, and the ratio of the water outlet diameter D2 of low-specific-speed rotary wheel of water turbine and low-specific-speed rotary wheel of water turbine water intake diameter D1 is 0.49～0.52.Low-specific-speed turbine runner blade number is 17～19, and the blade airfoil minimum thickness is 0.3～0.35 with the ratio of maximum ga(u)ge, and wing bending angle θ is between 100 °～105 °.
Beneficial effect:
Compared with prior art, it is low to the invention solves in the above-mentioned prior art low-specific-speed mixed-flow wheel engine efficiency, baroque technical problem.
Description of drawings
Fig. 1 is a kind of result schematic diagram of the present invention.
Fig. 2 is that the A-A of Fig. 1 is to sectional view.
Fig. 3 is a runner bucket schematic representation of the present invention.
Fig. 4 is the structural representation of negative cruvature stator of the present invention.
Embodiment
The present invention is described in more detail below in conjunction with description of drawings:
As shown in Figure 1, a kind of ultra-low specific speed mixed-flow type turbine comprises the into following ring 5 of metal spiral case 1, seat ring 2, negative cruvature stator 3, low-specific-speed turbine runner blade 4, low-specific-speed rotary wheel of water turbine, low-specific-speed rotary wheel of water turbine crown 6, cover plate 7, bearing support 8, main shaft 9, buttress 10, water-collecting tray 11, the tapered draft tube 12 of water; Be connected by welding method with seat ring 2 in the metal spiral case 1, and be placed on the buttress 10, weld fixing equally; Seat ring 2 is connected with tapered draft tube by water-collecting tray 11, and the connecting means between the three is a bolt.Ring 5, low-specific-speed rotary wheel of water turbine crown 6 and main shaft 9 constitute the water turbine rotary component down by low-specific-speed turbine runner blade 4, low-specific-speed rotary wheel of water turbine; Runner bucket 4 is fixed under the runner between ring 5 and the runner crown 6 by welding method, passes through the key carry-over moment between runner crown 6 and the main shaft 9; Main shaft 9 is fixed on the cover plate 7 by bearing support 8, adopts bolt between cover plate 7 and the seat ring 2.
16～18 of the present invention become the single-row negative cruvature stator that is circular layout 3 to adopt welding method to be fixed on the seat ring 2.
Negative cruvature guide vane height b0 of the present invention is 0.09～0.13 times of low-specific-speed rotary wheel of water turbine water intake diameter D1; The diameter D3 that the negative cruvature stator goes out the waterside is 0.9～1.15 times of low-specific-speed rotary wheel of water turbine water intake diameter D1, and the diameter D4 on negative cruvature stator water inlet limit is 1.1～1.3 times of low-specific-speed rotary wheel of water turbine water intake diameter D1.
Low-specific-speed rotary wheel of water turbine height B 0 of the present invention is 0.18～0.22 with the ratio of low-specific-speed rotary wheel of water turbine water intake diameter D1, and the ratio of the water outlet diameter D2 of low-specific-speed rotary wheel of water turbine and low-specific-speed rotary wheel of water turbine water intake diameter D1 is 0.49～0.52.Low-specific-speed turbine runner blade number is 17～19, and the blade airfoil minimum thickness is 0.3～0.35 with the ratio of maximum ga(u)ge, and wing bending angle θ is between 100 °～105 °.
Claims (3)
1. a ultra-low specific speed mixed-flow type turbine is characterized in that comprising that into the metal spiral case of water (1), seat ring (2), negative cruvature stator (3), low-specific-speed turbine runner blade (4), low-specific-speed rotary wheel of water turbine encircle (5), low-specific-speed rotary wheel of water turbine crown (6), cover plate (7), bearing support (8), main shaft (9), buttress (10), tapered draft tube (12) down; Main shaft (9) is arranged on the bearing support (8), bearing support (8) is arranged on the last middle side part of cover plate (7), the downside of cover plate (7) is provided with low-specific-speed rotary wheel of water turbine crown (6), the fixedly connected seat ring in end (2) of cover plate (7), the below of low-specific-speed rotary wheel of water turbine crown (6) is oppositely arranged ring (5) under the low-specific-speed rotary wheel of water turbine, a low-specific-speed rotary wheel of water turbine end of ring (5) down is connected with seat ring (2), and the other end is connected with tapered draft tube (12); The outside of seat ring (2) connects metal spiral case (1), and metal spiral case (1) is arranged on the buttress (10); 16～18 single-row annular negative cruvature stators (3) are set on the seat ring (2), and low-specific-speed rotary wheel of water turbine crown (6) and low-specific-speed rotary wheel of water turbine are provided with low-specific-speed turbine runner blade (4) in the cavity between the ring (5) down;
The height b0 of described negative cruvature stator (3) is 0.09～0.13 times of low-specific-speed rotary wheel of water turbine water intake diameter D1; The diameter D3 that negative cruvature stator (3) goes out the waterside is 0.9～1.15 times of low-specific-speed rotary wheel of water turbine water intake diameter D1, and the diameter D4 on negative cruvature stator (3) water inlet limit is 1.1～1.3 times of low-specific-speed rotary wheel of water turbine water intake diameter D1;
Low-specific-speed rotary wheel of water turbine height B 0 is 0.18～0.22 with the ratio of low-specific-speed rotary wheel of water turbine water intake diameter D1, and the ratio of the water outlet diameter D2 of low-specific-speed rotary wheel of water turbine and low-specific-speed rotary wheel of water turbine water intake diameter D1 is 0.49～0.52; Low-specific-speed turbine runner blade number is 17～19, and the blade airfoil minimum thickness is 0.3～0.35 with the ratio of maximum ga(u)ge, and wing bending angle θ is between 100 °～105 °.
2. ultra-low specific speed mixed-flow type turbine according to claim 1, it is characterized in that: also comprise water-collecting tray (11), described water-collecting tray (11) is positioned at ring (5) below under the low-specific-speed rotary wheel of water turbine, and an end is connected with seat ring (2), and the other end is connected with tapered draft tube (12).
3. ultra-low specific speed mixed-flow type turbine according to claim 1 is characterized in that: above-mentioned low-specific-speed is 40mKW to 60mKW.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100284820A CN101482083B (en) | 2009-01-22 | 2009-01-22 | Ultra-low specific speed mixed-flow type turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100284820A CN101482083B (en) | 2009-01-22 | 2009-01-22 | Ultra-low specific speed mixed-flow type turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101482083A CN101482083A (en) | 2009-07-15 |
| CN101482083B true CN101482083B (en) | 2010-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100284820A Expired - Fee Related CN101482083B (en) | 2009-01-22 | 2009-01-22 | Ultra-low specific speed mixed-flow type turbine |
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| CN (1) | CN101482083B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742333A (en) * | 2014-01-04 | 2014-04-23 | 峨眉山市驰骋机械制造有限公司 | Crown structure for mixed-flow horizontal water turbine with double runners |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101915196B (en) * | 2010-05-24 | 2011-11-16 | 李延频 | Double-runner ultra-low specific speed axial flow hydraulic turbine for driving cooling tower fan |
| CN102213177A (en) * | 2011-05-30 | 2011-10-12 | 辽宁海思达科技发展有限公司 | Mixed flow type water turbine with ultralow specific speed and high efficiency for cooling tower special belt water distributer |
| CN102817763A (en) * | 2011-06-10 | 2012-12-12 | 安徽省科捷再生能源利用有限公司 | Mixed-flow water turbine for industrial cooling tower |
| CN102840079A (en) * | 2011-06-22 | 2012-12-26 | 山东森玛格德节能设备有限公司 | Cylindrical diffused tail water device of hydraulic turbine |
| CN102536593A (en) * | 2011-12-27 | 2012-07-04 | 河海大学 | Ultra-low specific speed long and short blade runner for cooling tower |
| CN102536591B (en) * | 2012-02-07 | 2014-04-16 | 戴会超 | Mixed-flow type water turbine for increasing survival rate of fishes |
| CN102636515B (en) * | 2012-04-19 | 2014-02-19 | 河海大学 | Heat insulation measurement container and efficiency measurement device by use of thermodynamics method and using method thereof |
| CN103216374B (en) * | 2013-04-02 | 2016-05-18 | 河海大学 | A kind of small-scale mixed-flow turbine of low-specific-speed |
| CA2954783C (en) * | 2014-07-23 | 2020-02-25 | Andritz Hydro Ltd. | Francis turbine with short blade and short band |
| CN104265546B (en) * | 2014-07-28 | 2016-08-24 | 河海大学 | Directly drive in the ultra-low specific speed turbine of large-size water-cooling tower blower fan |
| CN104279115A (en) * | 2014-09-12 | 2015-01-14 | 乐山东方动力节能设备有限公司 | Novel special mixed flow type rotating wheel for hydraulic fan cooling tower driving |
| CN104389716B (en) * | 2014-09-24 | 2015-09-16 | 中国水利水电科学研究院 | Optimize the runner and be equipped with the Francis turbine of this runner in dry season of the number of blade |
| CN104481776B (en) * | 2014-09-24 | 2015-09-16 | 中国水利水电科学研究院 | Be suitable for the francis turbine runner run dry season and the water turbine being equipped with this runner |
| CN105863924A (en) * | 2016-05-24 | 2016-08-17 | 周玉翔 | Mixed-flow type water turbine for power equipment |
| CN107153753B (en) * | 2017-06-26 | 2020-10-09 | 中国电建集团成都勘测设计研究院有限公司 | Method for estimating basic parameters of mixed-flow water turbine |
| CN111458244B (en) * | 2019-12-17 | 2023-02-28 | 国网四川省电力公司映秀湾水力发电总厂 | Mixed-flow water turbine blade wing type abrasion test device |
-
2009
- 2009-01-22 CN CN2009100284820A patent/CN101482083B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742333A (en) * | 2014-01-04 | 2014-04-23 | 峨眉山市驰骋机械制造有限公司 | Crown structure for mixed-flow horizontal water turbine with double runners |
| CN103742333B (en) * | 2014-01-04 | 2016-06-08 | 峨眉山市驰骋机械制造有限公司 | The upper hat structure of mixed-flow horizontal double-rotary-wheel water turbine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101482083A (en) | 2009-07-15 |
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| C14 | Grant of patent or utility model | ||
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Owner name: NANJING XINGFEI COOLING APPARATUS CO., LTD. Free format text: FORMER OWNER: HEHAI UNIV. Effective date: 20131113 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Free format text: CORRECT: ADDRESS; FROM: 211100 NANJING, JIANGSU PROVINCE TO: 211132 NANJING, JIANGSU PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20131113 Address after: 211132, No. four, No. 1, Tangshan industrial concentration area, Tangshan District, Jiangsu, Nanjing, Jiangning Patentee after: NANJING XINGFEI COOLING EQUIPMENT Co.,Ltd. Address before: 211100 Jiangsu City, Jiangning Province Development Zone, West Road, No. 8 Buddha Patentee before: HOHAI University |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20150122 |
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| EXPY | Termination of patent right or utility model |