CN1530538A - Mixed-flow hydraulic turbine frequency-variable reel - Google Patents
Mixed-flow hydraulic turbine frequency-variable reel Download PDFInfo
- Publication number
- CN1530538A CN1530538A CNA031217206A CN03121720A CN1530538A CN 1530538 A CN1530538 A CN 1530538A CN A031217206 A CNA031217206 A CN A031217206A CN 03121720 A CN03121720 A CN 03121720A CN 1530538 A CN1530538 A CN 1530538A
- Authority
- CN
- China
- Prior art keywords
- blade
- frequency conversion
- arc length
- runner
- basic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
Landscapes
- Hydraulic Turbines (AREA)
Abstract
A frequency-changing rotor for the flow-mixed water turbine is composed of a top crown, a bottom ring, and several curved basic blades and frequency-changing blades, which are alternatively arranged between said top crown and bottom ring. The basic blades are close to upstream and the frequency-changing blades are close to downstream. Said frequency-changing blade can play the roles of destroying the big vortex generated by said basic blade and decreasing the frequency and amplitude of output circulating current and pressure fluctuation.
Description
Technical field: Francis turbine frequency conversion runner belongs to water turbine and makes art.
Technical background: in recent ten years, vibration and runner crackle equistability problem have appearred in domestic and international large and medium-sized hydraulic generator unit to some extent, as in Da Gu power, the Gu, water power plant such as Yan Tan, the last five small stream, Li Jiaxia, two beaches, Xiao Langdi, seriously influenced the normal operation of unit, its consequence is to shorten the repair cycle of unit, shorten the runner life-span or keep away load operation, has caused enormous economic loss to the power station.Because the frequent appearance of water turbine stability problem causes the user on the contract of signing it to be proposed as the first element.Rotary wheel of water turbine is the core component of water turbine Conversion of energy, and its stability problem has become the hot topic in water turbine field in recent years and most advanced and sophisticated research topic.
The blade shape of existing francis turbine runner is identical, be arranged in crown in pitch mode such as typical and down between the ring, be the center of circle promptly with the water turbine rotary centerline, the water inlet limit of all blades and the intersection point of crown, with the following intersection point of ring, all on same circumference; Be the center of circle with the water turbine rotary centerline, the intersection point that goes out waterside and crown of all blades, with the following intersection point of ring, also all on same circumference.The shortcoming of this structure runner is when departing from optimum operating condition, and the runner import separation of flow is serious, causes stability decreases, and outlet of rotary wheel whirlpool band energy causes that greatly vibration, noise are big, and serious will cause the blade crackle.Its main cause is that traditional runner can not be decayed disadvantageous energy, and the increase frequency of pressure pulsation and amplitude are strengthened.
The content of invention: in order to improve the stability of francis turbine runner operation, frequency conversion runner of the present invention as shown in Figure 1, 2, ring 4 and several are connected this crown and curvecd surface type blade between the ring 2 and blade 3 down down to comprise a crown 1, one.Each blade has one in water turbine, the water inlet limit of upstream deflector and over against the waterside that goes out in downstream.Its technical characteristics is that the curvecd surface type blade has two kinds, a kind of is basic blade 2, another kind of for frequency conversion blade 3 (among Fig. 3 black thick line represent on its axial plane into and out of the waterside), two kinds of different blade streamwises are arranged at interval and alternately, compare with the frequency conversion blade, the more close upstream side in blade water inlet limit, basis is compared the more close downstream side of frequency conversion blade outlet with basic blade.Because runner of the present invention, two kinds of adjacent different blades when departing from optimum operating condition, make frequency conversion blade water inlet limit can break up the part maelstrom that is formed by basic blade in crown and following interannular interlaced arrangement, weaken the energy of the separation of flow, improved the stability of runner operation; Simultaneously the outlet of rotary wheel limit has reduced the frequency and the amplitude of outlet circulation and pressure pulsation by the frequency conversion blade, has the stable operation scope of broadness more, and keeps other performance index of conventional runner.From flow performance Fig. 5, Fig. 6 of frequency conversion runner and existing runner as seen, existing runner does not have the advantage of runner of the present invention.But the new water turbine product of frequency conversion runner technology applicating and exploitation of the present invention also can directly use in existing Francis turbine, because of the structure of water turbine remains unchanged, brings convenience transforming existing rotary wheel of water turbine.Runner of the present invention is suitable for the Francis turbine of all heads and flow.
Description of drawings: Fig. 1 frequency conversion runner assembling front view
Fig. 2 frequency conversion runner assembling worm's eye view
Fig. 3 frequency conversion runner bucket axial plane schematic representation
Fig. 4 frequency conversion runner bucket axial plane characteristic pattern
The flow performance figure of Fig. 5 frequency conversion runner
The flow performance figure of the existing runner of Fig. 6
4 times rings of 1 crown, 2 basic blade 3 frequency conversion blades among the figure
ABCD is the axial plane of basic blade among Fig. 3; A
1B
1C
1D
1Axial plane for the frequency conversion blade; φ is the diameter (nominal diameter) that A is ordered.The definition of basis blade related point, line: some A is the intersection point of basic blade water inlet limit and following ring, point B is basic blade outlet and the intersection point that encircles down, point C is the intersection point of basic blade outlet and crown, point D is the intersection point of basic blade water inlet limit and crown, line AD is the water inlet limit of basic blade, and line BC is the waterside that of basic blade.The definition of frequency conversion blade related point, line: some A1 is frequency conversion blade water inlet limit and the intersection point that encircles down, point B1 is frequency conversion blade outlet and the intersection point that encircles down, point C1 is the intersection point of frequency conversion blade outlet and crown, point D1 is the intersection point of basic blade water inlet limit and crown, line A1D1 is the water inlet limit of frequency conversion blade, and line B1C1 is the waterside that of frequency conversion blade.Curve D D
1CC
1Part for the crown meridian streamline; Curve A A
1BB
1Part for following circulation line.
Press three streamlines of flow among Fig. 4, be respectively: EE at crown and following interannular five equilibrium
1E ' E
1', FF
1F ' F
1', GG
1G ' G
1'.Point E, F, G are respectively the intersection point on three streamlines and basic blade water inlet limit, some E
1, F
1, G
1Be respectively the intersection point on three streamlines and frequency conversion blade water inlet limit, some E ', F ', G ' are respectively the intersection point of three streamlines and basic blade outlet, some E
1', F
1', G
1' be respectively the intersection point of three streamlines and frequency conversion blade outlet.
The size of describing basic blade and frequency conversion blade import position difference is respectively: arc length DD
1, EE
1, FF
1, GG
1, AA
1The size of describing basic blade and frequency conversion blade exit position difference is respectively: CC
1, E ' E
1', F ' F
1', GG
1', BB
1Before address, φ is the diameter (nominal diameter) that A is ordered.
Embodiment: frequency conversion runner of the present invention is at crown 1 and down between the ring 4, streamwise is also being arranged several basic blade 2 and frequency conversion blades 3 at interval alternately, as shown in Figure 1, 2,1 basic blade promptly is installed, 1 frequency conversion blade of adjacent installation, its blade number is at interval decided according to the performance requirement of runner, and basic blade and frequency conversion blade are at water inlet limit and the intersection point A and the A that encircle down
1Do not overlap, and some A is than A
1More close upstream side; At intersection points B that goes out waterside and crown and B
1Do not overlap, and some B
1Than the more close downstream side of B; Point C and C
1Do not overlap, and some C
1Than the more close downstream side of C; Point D and D
1Do not overlap, and some D is than D
1More close upstream side.The dimension ratio of basis blade and frequency conversion blade import position difference as shown in Figure 4, at suction side arc length DD
1/ φ, arc length EE
1/ φ, arc length FF
1/ φ, arc length GG
1/ φ, arc length AA
1/ φ is more than or equal to 1.5%; The dimension ratio of basis blade and frequency conversion blade exit position difference, at outlet side, arc length CC
1/ φ, arc length E ' E
1'/φ, arc length F ' F
1'/φ, arc length GG
1'/φ, arc length BB
1/ φ is more than or equal to 1.0%.
Claims (4)
1, Francis turbine frequency conversion runner, comprise a crown, one down ring and several are connected crown and the curvecd surface type blade between the ring down, each blade has one in water turbine, the water inlet limit of upstream deflector and over against the waterside that goes out in downstream, it is characterized in that, curvecd surface type blade between crown and following ring is that streamwise is also being arranged two kinds of blades at interval alternately, a kind of is that basic blade is a kind of for the frequency conversion blade, compare with the frequency conversion blade, the more close upstream side in water inlet limit of basis blade, compare with basic blade, the frequency conversion blade go out more close downstream side, waterside.
2, Francis turbine frequency conversion runner according to claim 1 is characterized in that adjacent basic blade and frequency conversion blade are at water inlet limit and the intersection point A and the A that encircle down
1Do not overlap, and some A is than A
1More close upstream side; Point B and B
1Do not overlap, and some B
1Than the more close downstream side of B; Going out the intersection point C and the C of waterside and crown
1Do not overlap, and some C
1Than the more close downstream side of C; Point D and D
1Do not overlap, and some D is than D
1More close upstream side.
3, Francis turbine frequency conversion runner according to claim 1 is characterized in that size and the ratio of nominal diameter φ, i.e. the arc length DD of basic blade and frequency conversion blade import position difference
1/ φ, arc length EE
1/ φ, arc length FF
1/ φ, arc length GG
1/ φ, arc length AA
1/ φ is all more than or equal to 1.5%, size and the ratio of nominal diameter φ, i.e. the arc length CC of basic blade and frequency conversion blade exit position difference
1/ φ, arc length E ' E
1'/φ, arc length F ' F
1'/φ, arc length GG
1'/φ, arc length BB
1/ φ is all more than or equal to 1.0%.
4, Francis turbine frequency conversion runner according to claim 1 is characterized in that the interval quantity of two kinds of blades, decides according to different runner performances.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031217206A CN100439701C (en) | 2003-03-14 | 2003-03-14 | Mixed-flow hydraulic turbine frequency-variable reel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031217206A CN100439701C (en) | 2003-03-14 | 2003-03-14 | Mixed-flow hydraulic turbine frequency-variable reel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1530538A true CN1530538A (en) | 2004-09-22 |
| CN100439701C CN100439701C (en) | 2008-12-03 |
Family
ID=34285773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031217206A Expired - Fee Related CN100439701C (en) | 2003-03-14 | 2003-03-14 | Mixed-flow hydraulic turbine frequency-variable reel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100439701C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364083A (en) * | 2011-07-01 | 2012-02-29 | 哈尔滨电机厂有限责任公司 | Long-short blade rotating wheel for mixed flow pump turbine |
| CN103696895A (en) * | 2013-12-19 | 2014-04-02 | 广东电网公司电力科学研究院 | Mixed-flow type water pump turbine |
| CN105593515A (en) * | 2013-05-27 | 2016-05-18 | 阿尔斯通再生能源技术公司 | Rotating part of a hydraulic machine, hydraulic machine provided with such a rotating part and installation for converting energy comprising such a machine |
| EP2923075B1 (en) | 2012-01-03 | 2019-02-20 | Rainpower Technology AS | A francis turbine runner |
| CN109977593A (en) * | 2019-04-09 | 2019-07-05 | 重庆水轮机厂有限责任公司 | Super large specific discharge axial fixed blade propeller water turbine formula water turbine set increase-volume proposes effect design method |
| CN110410259A (en) * | 2019-08-07 | 2019-11-05 | 东方电气集团东方电机有限公司 | A kind of leaf head cantilever type runner |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO303590B1 (en) * | 1996-08-02 | 1998-08-03 | Kvaerner Energy As | L ° pehjul |
| JPH10318117A (en) * | 1997-05-20 | 1998-12-02 | Toshiba Corp | Impeller of fluid machine |
| DE19803390C1 (en) * | 1998-01-29 | 1999-02-11 | Voith Hydro Gmbh & Co Kg | Rotor wheel for Francis water turbine |
-
2003
- 2003-03-14 CN CNB031217206A patent/CN100439701C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364083A (en) * | 2011-07-01 | 2012-02-29 | 哈尔滨电机厂有限责任公司 | Long-short blade rotating wheel for mixed flow pump turbine |
| CN102364083B (en) * | 2011-07-01 | 2013-04-24 | 哈尔滨电机厂有限责任公司 | Long-short blade rotating wheel for mixed flow pump turbine |
| EP2923075B1 (en) | 2012-01-03 | 2019-02-20 | Rainpower Technology AS | A francis turbine runner |
| CN105593515A (en) * | 2013-05-27 | 2016-05-18 | 阿尔斯通再生能源技术公司 | Rotating part of a hydraulic machine, hydraulic machine provided with such a rotating part and installation for converting energy comprising such a machine |
| US10400740B2 (en) | 2013-05-27 | 2019-09-03 | Ge Renewable Technologies | Rotating part of a hydraulic machine, hydraulic machine provided with such a rotating part and installation for converting energy comprising such a machine |
| CN105593515B (en) * | 2013-05-27 | 2019-09-13 | 通用电气再生能源技术公司 | The rotating part of hydraulic machine, the hydraulic machine equipped with such rotating part and the equipment for converting energy including such machine |
| CN103696895A (en) * | 2013-12-19 | 2014-04-02 | 广东电网公司电力科学研究院 | Mixed-flow type water pump turbine |
| CN109977593A (en) * | 2019-04-09 | 2019-07-05 | 重庆水轮机厂有限责任公司 | Super large specific discharge axial fixed blade propeller water turbine formula water turbine set increase-volume proposes effect design method |
| CN110410259A (en) * | 2019-08-07 | 2019-11-05 | 东方电气集团东方电机有限公司 | A kind of leaf head cantilever type runner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100439701C (en) | 2008-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| MX2011012561A (en) | Rotating wheel used for direct-connection low-speed small-scale mixed-flow hydroturbine of hydrodynamic energy-saving cooling tower. | |
| CN107524557A (en) | A kind of multistage tidal current energy water turbine based on real-time, tunable kuppe corner | |
| CN108361205B (en) | Centrifugal pump impeller and LNG immersed pump comprising same | |
| CN101555859B (en) | Francis turbine runner with ultra-low specific rotating speed specially used for driving cooling tower fan | |
| CN100439701C (en) | Mixed-flow hydraulic turbine frequency-variable reel | |
| CN201180603Y (en) | Hydroturbine | |
| CN101344059B (en) | Reverse S type runner of mixed-flow turbine | |
| CN109139334A (en) | A kind of mixed-flow deviated splitter vane hydraulic turbine | |
| CN111535973A (en) | Low specific speed double-inlet volute mixed-flow water turbine suitable for cooling tower | |
| CN201621002U (en) | Multistage combined type fan blade | |
| CN100427753C (en) | Mixed flow type water turbin having H-type flow path rotary wheel | |
| CN1386985A (en) | Diffuser with dual-column blades arranged radially and serially | |
| CN203272233U (en) | Integral backward-bending impeller of supercharger | |
| CN112360660B (en) | Long and short blade type reversible pump turbine | |
| CN212177494U (en) | Single-plate arc-shaped efficient mixed flow impeller | |
| CN114776389A (en) | Shrouded turbine with flange plate step casing | |
| CN201396234Y (en) | Super-low specific rotational speed mixed-flow type hydraulic turbine runner dedicated for driving cooling tower fan | |
| CN101793224A (en) | Guide-type vertical-axis wind turbine with multisection combined vanes | |
| CN2851583Y (en) | Penult-stage twisted blades of large-sized full-speed steam turbine | |
| CN202165202U (en) | Parent fish type movable propeller turbine | |
| CN2766054Y (en) | Wheel with L-type blades of mixed flow turbine | |
| CN2665392Y (en) | Mixed flow turbine rotary wheel | |
| CN201771855U (en) | Efficient mixed flow compressor impeller | |
| CN110259721A (en) | A kind of centrifugal-flow compressor impeller with high pressure ratio | |
| CN112012869A (en) | Mixed-flow water turbine tail water vortex band elimination method based on variable speed technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081203 Termination date: 20170314 |