CN202073687U - Special ultralow-specific-speed high-efficiency mixed flow water turbine with water distributor for cooling tower - Google Patents
Special ultralow-specific-speed high-efficiency mixed flow water turbine with water distributor for cooling tower Download PDFInfo
- Publication number
- CN202073687U CN202073687U CN2011201761726U CN201120176172U CN202073687U CN 202073687 U CN202073687 U CN 202073687U CN 2011201761726 U CN2011201761726 U CN 2011201761726U CN 201120176172 U CN201120176172 U CN 201120176172U CN 202073687 U CN202073687 U CN 202073687U
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- runner
- cooling tower
- bearing
- water distributor
- cover plate
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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
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Abstract
A special ultralow-specific-speed high-efficiency mixed flow water turbine with a water distributor for a cooling tower relates to novel energy-saving power equipment for the cooling tower, and comprises a runner, a spindle, a bearing device, a socket ring, a bottom ring and a cover plate. The lower portion of the bottom ring is connected with the water distributor, and the socket ring consists of a volute casing, guide vanes, an upper cover plate and a lower cover plate which are welded integrally. The mixed flow turbine is novel in structure, stable in running, low in noise, high in flow capacity and high in efficiency, is energy-saving and environment-friendly. The geometric parameter of the runner and the guide vanes of the water turbine includes that the ratio D1/D2 of the diameter D1 of an inlet of the runner to the diameter D2 of an outlet of the runner is equal to 1.508, and the relative height 0 of each of the guide vanes is equal to 0.09D1. The performance index of the runner includes that the specific speed ns= (50-70) m.kW, the unit speed n11= (45-55) r/min, and the efficiency eta m= (88.5%-90.5%). Accordingly, the problem that the over-high specific speed of a runner of an existing water turbine without a planet gear reducer is incapable of matching with parameters of a fan of the cooling tower is solved.
Description
Technical field
The invention belongs to cooling tower energy saving hydrodynamic force apparatus field, be a kind of ultra-low specific speed of band water distributor of cooling tower special use, low unit speed, high efficiency Francis turbine specifically, utilize circulating water complementary energy, need not to use plane table thermoconductivity meter, just can directly drive blower fan, thereby replace the power of motor as blower fan.
Background technique
The blower fan cooling system of traditional cooling tower is made up of parts such as motor, transmission shaft, umbrella gear deviator, plane table thermoconductivity meter, blower fans, and its complex structure, poor reliability, motor power consumption are big, the operation noise is big; Motor, retarder maintenance cost height.Therefore neither environmental protection is not energy-conservation again for traditional type of cooling of usefulness motor driving blower fan.
In view of present cooling tower adopts performance, the efficient of the dedicated water turbine that drives blower fan all undesirable, it is too little that main cause is that cooling tower is left the installing space of water turbine for, and height and Plane Installation size all have strict restriction; Employed hydraulic turbine outlet directly is connected with water distributor, and the working state of water turbine is far from it with working state in traditional water power plant, causes flow minimizing, efficient by water turbine to reduce significantly; Heat radiation according to blower fan requires to have determined the air horsepower of blower fan and the rotating speed of requirement.The parameter matching that will require with blower fan, employed dedicated water turbine can only be the water turbine of low unit speed, low-specific-speed.The specific speed n that is used for the Francis turbine optimum operating condition in water power plant at present
SoGenerally between (84～250) m.kW, optimum unit speed n
110Generally between (60～80), and satisfy the specific speed n of water turbine for cooling tower under optimum operating condition
sBetween (50～70) m.kW, optimum unit speed n
110Between (45～55), could mate with the blower fan desired parameters.And limit by installing space, flow channel shape, size and the structure of the Francis turbine of generating usefulness all need bigger change.Existing in addition turbine stay ring, spiral case, stator are to be installed in respectively on the body, the installation procedure complexity.
This shows that present Francis turbine must be specialized in exploitation according to the problems referred to above, its structure is made corresponding adjustment.
Summary of the invention
In order to solve the technical problem of above-mentioned existence, the invention provides a kind of performance parameter to be complementary with the parameter of blower fan of cooling tower requirement fully, do not need just can directly connect by plane table thermoconductivity meter again with blower fan, the heat radiation of driving blower fan, the traditional type of cooling that replaces motor, retarder driving blower fan, energy-conserving and environment-protective, cost are low, compact structure, the special-purpose band of the simple cooling tower of installation procedure water distributor ultra-low specific speed high efficiency Francis turbine.
The purpose of the invention is achieved through the following technical solutions: the special-purpose band of cooling tower water distributor ultra-low specific speed high efficiency Francis turbine, it comprises runner, main shaft, bearing means, seat ring, base ring, cover plate, it is characterized in that: bearing means comprises first gland, bearing cap, bearing cup, radial bearing, snap ring, thrust-bearing, second gland, each parts of described bearing means are installed on the main shaft successively from top to bottom, and radial bearing is in bearing cup, thrust-bearing is directly installed in the sleeve, whole bearing means is positioned among the sleeve, sleeve is connected with cover plate, the base ring bottom is connected with water distributor, and described seat ring is by spiral case, cover plate was integrally welded about stator reached.
Runner is connected with main shaft by key, and fixes by draft cone.
Described runner inlet diameter D
1With outlet diameter D
2Ratio: D
1/ D
2=1.508, the runner height B
0With runner inlet diameter D
1Ratio: B
0/ D
1=0.20, the number of blade Z of runner
1=19.
Described stator relative height:
=0.09D
1, stator is counted Z
0=18.
The beneficial effect of the invention: said structure is adopted in the invention, have novel structure, stable, noise is little, conveyance capacity is big, efficient is high, the characteristics of energy-saving and environmental protection, because seat ring adopts spiral case, stator and cover plate welding one up and down, compact structure, easy for installation.The invention is under the specified conditions of the narrow and small installing space of cooling tower, simulate as boundary conditions with the full runner of band water distributor, adopt the analogy method of the non-permanent number of CFD Three-dimensional Flow turbulent flow that rotary wheel of water turbine and each flow passage components are optimized design, the runner of water turbine, the geometric parameter of stator are set to runner inlet diameter D
1With outlet diameter D
2Ratio D
1/ D
2=1.508, the runner height B
0With runner inlet diameter D
1Ratio: B
0/ D
1=0.20, the stator relative height
0=0.09D
1, design successfully have ultra-low specific speed, low unit speed and high efficiency rotary wheel of water turbine, reach through simulation trial hydraulic turbine model runner performance index: specific speed n
s=(50 ~ 70) m.kW, unit speed n
11=(45 ~ 55) r/min, efficiency eta
m=(88.5% ~ 90.5%), it is too high to have satisfactorily resolved existing rotary wheel of water turbine specific speed, not the key issue that can't be complementary with the blower fan of cooling tower parameter by plane table thermoconductivity meter.Adopt the boundary conditions of the full runner simulation of band water distributor as the runner optimal design, having solved cooling tower uses water power plant generating runner water turbine too big because of the runner difference, cause that the flow by water turbine reduces greatly, thereby reduced the ubiquitous problem of water turbine output power.If be used for water-out manners under the new tower, not only can guarantee flow, and the efficient of water turbine can further improve also by water turbine.
Description of drawings
Fig. 1 is the structural representation of the special-purpose band of innovation and creation cooling tower water distributor ultra-low specific speed high efficiency Francis turbine.
Fig. 2 is the structural representation of seat ring part.
Fig. 3 is a runner dimensional parameters ratio schematic representation.
Embodiment
The special-purpose band of cooling tower water distributor ultra-low specific speed high efficiency Francis turbine, it comprises runner 8, main shaft 6, bearing means, seat ring 10, base ring 9, cover plate 12, bearing means comprises first gland 3, bearing cap 1, bearing cup 4, radial bearing 18, snap ring 16, thrust-bearing 15, second gland 14, first gland 3 wherein, bearing cap 1, bearing cup 4, radial bearing 18, snap ring 16, thrust-bearing 15, second gland 14, be installed on the main shaft 6 successively from top to bottom, and radial bearing 18 is in bearing cup 4, thrust-bearing 15 is directly installed in the sleeve 17, bearing cup 4 puts together on above the sleeve 17 by bolt, in the bearing cap 1 reinforced seal is housed, seal with first gland 3 above, slinger ring 2 is installed in the top of first gland 3, be fixed on the main shaft 6 by the bisection method orchid, whole bearing means is positioned among the sleeve 17, sleeve 17 is connected with cover plate 12, thrust-bearing 15 is installed in the bottom in the sleeve 17, snap ring 16 hot jackets are on main shaft 6, be installed in thrust-bearing 15 above, copper sheathing 13 is sleeved on the main shaft 6, runner 8 is by the shaft shoulder location of main shaft 6, and be connected with main shaft 6 by key 5, be locked on the main shaft 6 by draft cone 7 then, seat ring 10 is by spiral case 20, stator 21 and upper cover plate 22, lower cover plate 23 integrally welded making, the upper cover plate 22 of seat ring 10 is connected with cover plate 12, the lower cover plate 23 of seat ring 10 is connected with base ring 9 by bolt, the bottom of seat ring 10 is provided with footing piece 11, base ring 9 bottoms are connected with water distributor 19
Wherein runner 8 is formed runner 8 inlet diameter D by crown, blade, following ring
1With outlet diameter D
2Ratio be D
1/ D
2=1.508, the runner height B
0With runner inlet diameter D
1Ratio: B
0/ D
1=0.20, the number of blade Z of runner
1=19.Stator 21 relative heights:
=0.09D
1, the stator number is: Z
0=18.
Through calculating, the CFD analysis result of runner and runner is as follows.
1, the CFD of volute and stator analyzes: the velocity distribution, volute pressure isopleth, near the velocity distribution of stator that have provided streamline in the volute.According to the result of calculation of volute interior flow field, the volute streamline distribution is even and regular, and pressure gradient distributes rationally.Volute goes out stream and cooperates finely with stator, and velocity distribution is even, and import does not have bump, exports the no separation of flow.
2, the CFD of rotary wheel of water turbine analyzes
:Blade just, the backside pressure isopleth is even, pressure distribution is reasonable; Blade turnover bicker is laid rationally, and current are little to the blade surface bump, and velocity vector is more even; Current are full of full runner, and no separation of flow phenomenon produces in the runner.
3, the CFD of water turbine tail water analyzes
The water distributor of draft tube and connection calculates as a complete draft tube runner, and the result shows draft tube inlet velocity pressure distribution symmetry substantially, does not have significant whirlpool band in the draft tube right cone section.
For newly-built following water-out manners cooling tower, available tapered draft tube replaces the water distributor in the present embodiment, and tapered draft tube can directly be connected with following ring, not only can guarantee the flow by water turbine, and the efficient of water turbine can further improve also.
Calculating has obtained ultra-low specific speed n
sAnd low unit speed n
11Francis turbine runner.Its performance index n
s=(50 ~ 70) m.kW, n
11=(45 ~ 55) r/min, η
m=(88.5 ~ 90.5) % directly drives the unmatched difficult problem of fan performance thereby solved at present existing water turbine in cooling tower, for the power consumption that replaces motor, plane table thermoconductivity meter greatly, the mode of the driving blower fan of not environmental protection established solid theory.
Claims (4)
1. water distributor ultra-low specific speed high efficiency Francis turbine is with in the cooling tower special use, it comprises runner, main shaft, bearing means, seat ring, base ring, cover plate, it is characterized in that: bearing means comprises first gland, bearing cap, bearing cup, radial bearing, snap ring, thrust-bearing, second gland, each parts of described bearing means are installed on the main shaft successively from top to bottom, and radial bearing is in bearing cup, thrust-bearing is directly installed in the sleeve, whole bearing means is positioned among the sleeve, sleeve is connected with cover plate, the base ring bottom is connected with water distributor, and described seat ring is by spiral case, cover plate was integrally welded about stator reached.
2. the special-purpose band of cooling tower according to claim 1 water distributor ultra-low specific speed high efficiency Francis turbine, it is characterized in that: runner is connected with main shaft by key, and fixes by draft cone.
3. the special-purpose band of cooling tower according to claim 1 and 2 water distributor ultra-low specific speed high efficiency Francis turbine is characterized in that: described runner inlet diameter D
1With outlet diameter D
2Ratio: D
1/ D
2=1.508, the runner height B
0With runner inlet diameter D
1Ratio: B
0/ D
1=0.20, the number of blade Z of runner
1=19.
4. the special-purpose band of cooling tower according to claim 3 water distributor ultra-low specific speed high efficiency Francis turbine is characterized in that: described stator relative height:
=0.09D
1, stator is counted Z
0=18.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201761726U CN202073687U (en) | 2011-05-30 | 2011-05-30 | Special ultralow-specific-speed high-efficiency mixed flow water turbine with water distributor for cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201761726U CN202073687U (en) | 2011-05-30 | 2011-05-30 | Special ultralow-specific-speed high-efficiency mixed flow water turbine with water distributor for cooling tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202073687U true CN202073687U (en) | 2011-12-14 |
Family
ID=45111791
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201761726U Expired - Lifetime CN202073687U (en) | 2011-05-30 | 2011-05-30 | Special ultralow-specific-speed high-efficiency mixed flow water turbine with water distributor for cooling tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202073687U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103225584A (en) * | 2013-03-19 | 2013-07-31 | 河海大学 | Micro mixed flow water turbine for high-rise heat supply system |
| CN106194550A (en) * | 2016-08-12 | 2016-12-07 | 杭州诚德发电设备有限公司 | Adjustable runner hydraulic turbine installation method |
| CN107165763A (en) * | 2017-07-20 | 2017-09-15 | 合肥裕朗机电科技有限公司 | A kind of low noise hydraulic turbine of cooling tower |
-
2011
- 2011-05-30 CN CN2011201761726U patent/CN202073687U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103225584A (en) * | 2013-03-19 | 2013-07-31 | 河海大学 | Micro mixed flow water turbine for high-rise heat supply system |
| CN103225584B (en) * | 2013-03-19 | 2015-09-30 | 河海大学 | The miniature Francis turbine of Heating System of High Residential Buildings |
| CN106194550A (en) * | 2016-08-12 | 2016-12-07 | 杭州诚德发电设备有限公司 | Adjustable runner hydraulic turbine installation method |
| CN106194550B (en) * | 2016-08-12 | 2018-12-25 | 杭州诚德发电设备有限公司 | Adjustable runner hydraulic turbine installation method |
| CN107165763A (en) * | 2017-07-20 | 2017-09-15 | 合肥裕朗机电科技有限公司 | A kind of low noise hydraulic turbine of cooling tower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: LIAONING YINPU ENERGY SAVING SERVICES CO., LTD. Free format text: FORMER OWNER: LIAONING HAISIDA SCIENCE AND TECHNOLOGY DEVELOPMENT CO., LTD. Effective date: 20130315 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 110013 SHENYANG, LIAONING PROVINCE TO: 110000 SHENYANG, LIAONING PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130315 Address after: 22, building 168, International Building, No. 110000, main road, Heping District, Liaoning, Shenyang Patentee after: Liaoning Yingpu Energy-saving Service Co., Ltd. Address before: 601 room 110013, Brothers Building, 21 Beijing street, Shenhe District, Liaoning, Shenyang Patentee before: Liaoning Haisida Technology Development Co.,Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Mixed flow type water turbine with ultralow specific speed and high efficiency for cooling tower special belt water distributer Effective date of registration: 20150320 Granted publication date: 20111214 Pledgee: Pudong Development Bank of Shanghai, Limited by Share Ltd, Shenyang branch Pledgor: Liaoning Yingpu Energy-saving Service Co., Ltd. Registration number: 2015210000003 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111214 |
|
| CX01 | Expiry of patent term |