CN101555859B - Francis turbine runner with ultra-low specific rotating speed specially used for driving cooling tower fan - Google Patents
Francis turbine runner with ultra-low specific rotating speed specially used for driving cooling tower fan Download PDFInfo
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- CN101555859B CN101555859B CN2009100648916A CN200910064891A CN101555859B CN 101555859 B CN101555859 B CN 101555859B CN 2009100648916 A CN2009100648916 A CN 2009100648916A CN 200910064891 A CN200910064891 A CN 200910064891A CN 101555859 B CN101555859 B CN 101555859B
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- cooling tower
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- 238000001816 cooling Methods 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 230000008676 import Effects 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract 2
- 238000005452 bending Methods 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 description 7
- 230000000295 complement effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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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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- Hydraulic Turbines (AREA)
Abstract
The invention relates to a Francis turbine runner with ultra-low specific rotating speed specially used for a driving cooling tower fan, which effectively solves the problems of the matching of the water turbine runner and the water flow system of the cooling tower and the fan parameters and the reduction of noise and vibration; the structure of the Francis turbine runner is characterized in that vanes are uniformly distributed between an upper coronal and a lower ring; the diameter ratio of a runner inlet and a runner outlet is 1.5-2.5; the ratio of the height of the runner inlet edge and thediameter of the runner outlet is 0.07-0.1; the specific rotating speed of the runner is 60-70m.kW; the unit rotating speed is 40-500r/min; therefore, characteristics of ultra-low rotating speed and u ltra-low unit rotating speed are formed; and the space between the vane inlet and the vane outlet is a bent shape and the bending degree is decided by the difference of the vane inlet installation angle and the vane outlet installation angle and the amount of the vanes is 10-19. The Francis turbine runner has unique structure, ultra-low specific rotating speed and ultra-low unit rotating speed, sufficiently utilizes water flow energy, carries out conversion effectively and has excellent stability and huge economical and social benefits.
Description
One, technical field
The present invention relates to water turbine, particularly a kind of blower fan of cooling tower drives Francis turbine runner with ultra-low specific rotating speed specially used, under the situation of not using speed reducer, make rotational speed of water turbine and blower fan of cooling tower coupling, realize efficient, the cheapness and the low noise of Hydrodynamic force fan drive unit.
Two, background technique
At present, China does not still have a kind of special-purpose rotary wheel of water turbine of industrial cooling tower blower fan that is applicable to.Existing reaction turbine runner is designed for hydroelectric power, and generally between 100～1000m.kW, unit speed is between 60～150r/min for specific speed.And the specific speed of water turbine for cooling tower need be between 50～70, and unit speed need be between 35～45.As seen, generating is not suitable for being directly used in the driving blower fan of cooling tower with rotary wheel of water turbine.
In order to improve the efficient of water turbine, people have to increase the rotating speed adapter, promptly link to each other with blower fan by planet-gear speed reducer, because the speed reducer complex structure costs an arm and a leg, and has not only increased the cost of water turbine equipment, and because speed reducer is fragile, maintenance workload is bigger.
The problems referred to above are seriously perplexing the popularization of hydrodynamic force cooling tower, the preferred approach of dealing with problems is to design and develop a kind of ultra-low specific speed mixed-flow type turbine runner of special use, be complementary with the flow promoter system and the fan parameter of cooling tower, under the situation of not establishing speed reducer can with the blower fan direct connection.Special-purpose runner can make the water turbine equipment structure simplify, efficiently, low cost of manufacture, can reduce noise and vibration again.
Three, summary of the invention
At above-mentioned situation, for overcoming the defective of prior art, the object of the present invention is to provide a kind of blower fan of cooling tower to drive Francis turbine runner with ultra-low specific rotating speed specially used, the flow promoter system and the fan parameter that can effectively solve existing rotary wheel of water turbine and cooling tower are complementary, under the situation of not establishing speed reducer can with the blower fan direct connection, the water turbine equipment structure is simplified, efficiently, low cost of manufacture, can reduce the problem of noise and vibration again, the technological scheme of its solution is, include crown, blade and following ring, blade is distributed between crown and the following ring, runner has bigger advancing, the outlet diameter ratio, the runner inlet diameter is 1.5～2.5 with the discharge diameter of runner ratio, the ratio of runner inlet side height and runner inlet diameter is between 0.07～0.1, the specific speed of runner is 60-70m.kW, unit speed is 40-50r/min, constitute characteristic with ultra-low specific speed and ultralow unit speed, blade advances, be curved shape between the outlet, its tortuosity is determined by the difference of blade import laying angle and blade exit laying angle, the difference of blade import laying angle and blade exit laying angle is 100 °-125 °, the number of blade is 10～19, the present invention is simple in structure, novel unique, have ultra-low specific speed and ultralow unit speed, runner has the runner parameter of novelty, runner channel has more greatly, the outlet diameter ratio, blade has than the macrobending degree, guaranteed that effectively rotational speed of water turbine and blower fan of cooling tower have good matching, can make water turbine and blower fan direct connection, flow energy is fully utilized in runner, realize the effective conversion of flow energy in runner, good stable is arranged, economic and social benefit is huge.
Four, description of drawings
Fig. 1 is the special-purpose ultra-low specific speed mixed-flow type runner channel of the present invention.
D
1: the runner inlet diameter; D
2: discharge diameter of runner; b
1: runner inlet side height;
Fig. 2 is the special-purpose ultra-low specific speed mixed-flow type runner of the present invention sectional top view.
β
1: blade import laying angle; β
2: the blade exit laying angle.
Five, embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated.
Shown in Fig. 1,2, the present invention includes crown 1, blade 2 and encircle the 3 rotary wheel of water turbine runners that constitute down, blade is the aerofoil profile section configuration and is distributed between crown 1 and the following ring 3, and runner has bigger inlet/outlet diameter ratio, inlet diameter D
1With outlet diameter D
2Than (D
1/ D
2) be 1.5～2.5, i.e. inlet diameter D
1Be 1.5～2.5 times of outlet diameter, runner inlet side height b
1With runner inlet diameter D
1Ratio (b
1/ D
1) between 0.07～0.1, this ratio equals the relative height of guide vanes of water turbine, specific speed n
sBe 60-70m.kW (said specific speed is meant that head is 1m, the rotating speed of water turbine self when sending 1kW power), unit speed n
11For the said unit speed of 40-50r/min[is meant, be equivalent to runner diameter 1m, the rotational speed of water turbine when head is 1m], the special parameter of runner and blade shape constitute the structure characteristic with ultra-low specific speed and ultralow unit speed, be heavy camber between blade 2 inlet/outlet, its tortuosity is by blade import laying angle β
1With blade exit laying angle β
2Difference determine β
1With β
2Difference be 100 °～125 °, number of blade Z is 10～19.
For the requirement of the characteristic conforms blower fan of cooling tower that guarantees runner, said blade 2 import laying angle β
1Be 125～145 °, blade 2 outlet laying angle β
2Be 20～25 °, the macrobending degree of blade has guaranteed the low unit speed characteristic of runner, makes rotational speed of water turbine and blower fan of cooling tower rotating speed that good matching be arranged, make water turbine can with the blower fan direct connection, and flow energy is fully utilized in runner; Said blade importer is 125～145 ° to the angle with circumferencial direction, and the angle of blade exit direction and circumferencial direction is 20～25 °.
Provided by said structure, positive contribution of the present invention is:
1, the runner of designed making has the blower fan of cooling tower driving needed specific speed of the hydraulic turbine and unit speed, these parameters can guarantee under general industry cooling tower water force parameter condition, the rotating speed of hydraulic turbine rotating speed lucky and blower fan of cooling tower is complementary, can realize the direct connection of the hydraulic turbine and blower fan, exempt the use of reductor.
2, the runner of special-purpose runner uniqueness and blade shape, make runner possess the characteristic of ultra-low specific speed and ultralow unit speed, and has a good hydraulic, its rotating speed and blower fan are complementary, and guaranteed that flow energy has good fluidised form in runner, the high and low vibration of runner efficiency.
3, use rotary wheel of water turbine of the present invention, can realize water turbine and blower fan of cooling tower direct connection, only omit one of planet-gear speed reducer, just can make the cost of water turbine equipment reduce by 1/3, its Economy is very significant, and has increased its reliability and non-maintaining property.Applied range, particularly industrial cooling tower reducing energy consumption are badly in need of so special-purpose runner, and economic and social benefit is huge.
Claims (2)
1. a blower fan of cooling tower drives Francis turbine runner with ultra-low specific rotating speed specially used, includes crown (1), blade (2) and encircles (3) down, and blade is distributed on crown (1) and encircles between (3) down, it is characterized in that runner inlet diameter D
1With discharge diameter of runner D
2Than being 1.5～2.5, i.e. inlet diameter D
1Be 1.5～2.5 times of outlet diameter, runner inlet side height b
1With runner inlet diameter D
1Ratio between 0.07～0.1, this ratio equals the relative height of guide vanes of water turbine, crown (1), blade (2) and down ring (3) constitute runner channel, runner specific speed n
sBe 60～70m.kW, unit speed n
11Be 40～50r/min, formation has ultra-low specific speed and ultralow unit speed structure characteristic, is curved shape between blade (2) inlet/outlet, and its tortuosity is by blade import laying angle β
1With blade exit laying angle β
2Difference determine blade import laying angle β
1With blade exit laying angle β
2Difference be 100～125 °, number of blade Z is 10～19.
2. blower fan of cooling tower according to claim 1 drives Francis turbine runner with ultra-low specific rotating speed specially used, it is characterized in that said blade import laying angle β
1Be 125～145 °, blade exit laying angle β
2Be 20～25 °, blade import and outlet end form big tortuosity, guarantee that rotational speed of water turbine and blower fan of cooling tower rotating speed have good matching, make water turbine and blower fan direct connection, and flow energy is fully utilized in runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100648916A CN101555859B (en) | 2009-05-14 | 2009-05-14 | Francis turbine runner with ultra-low specific rotating speed specially used for driving cooling tower fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100648916A CN101555859B (en) | 2009-05-14 | 2009-05-14 | Francis turbine runner with ultra-low specific rotating speed specially used for driving cooling tower fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101555859A CN101555859A (en) | 2009-10-14 |
| CN101555859B true CN101555859B (en) | 2010-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100648916A Expired - Fee Related CN101555859B (en) | 2009-05-14 | 2009-05-14 | Francis turbine runner with ultra-low specific rotating speed specially used for driving cooling tower fan |
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| Country | Link |
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| CN (1) | CN101555859B (en) |
Families Citing this family (7)
| 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 |
| 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 |
| CN103225584B (en) * | 2013-03-19 | 2015-09-30 | 河海大学 | The miniature Francis turbine of Heating System of High Residential Buildings |
| CN103953489B (en) * | 2013-08-02 | 2016-02-24 | 河海大学 | A kind of radial water turbine runner for directly driving blower fan of cooling tower |
| CN103982362A (en) * | 2013-10-18 | 2014-08-13 | 河海大学 | Hydrodynamic direct-drive radial-flow water turbine of cooling tower |
| CN104131942A (en) * | 2014-08-19 | 2014-11-05 | 河南新飞纪元科技有限公司 | Multi-stage water turbine with super-low specific speed for industrial fluid high excessive pressure recovery |
| 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 |
-
2009
- 2009-05-14 CN CN2009100648916A patent/CN101555859B/en not_active Expired - Fee Related
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|---|---|
| CN101555859A (en) | 2009-10-14 |
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| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Dexin Inventor after: Pang Huichun Inventor after: Li Yanpin Inventor before: Chen Dexin Inventor before: Pang Huichun |
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Free format text: CORRECT: INVENTOR; FROM: CHEN DEXIN PANG HUICHUN TO: CHEN DEXIN PANG HUICHUN LI YANPIN |
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| C14 | Grant of patent or utility model | ||
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Address after: 450003, room 3101, block A, Sun Ming, No. 8, Bauhinia Road, Zhengzhou, Henan Patentee after: HENAN XINFEI ERA ENERGY POLYTRON CO.,LTD. Address before: 450003, room 3101, block A, Sun Ming, No. 8, Bauhinia Road, Zhengzhou, Henan Patentee before: Henan Xinfei Jiyuan Technology Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100818 |
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| CF01 | Termination of patent right due to non-payment of annual fee |