CN102062118A - Design method for centrifugal pump impeller with high specific revolution number - Google Patents
Design method for centrifugal pump impeller with high specific revolution number Download PDFInfo
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- 230000001737 promoting effect Effects 0.000 abstract 1
- 238000012545 processing Methods 0.000 description 3
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- 238000005086 pumping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
一种高比转数离心泵叶轮设计方法，属于泵技术领域。本发明给出了叶轮出口直径、叶轮前盖板倾角、叶轮后盖板倾角、叶片数及出口安放角等几何参数的设计公式和取值范围，可将比转数在400到600之间的大流量低扬程泵设计成离心泵，与现有设计理论将比转数在400到600之间的泵设计成混流泵或者轴流泵相比，达到变工况运行时性能稳定，高效区宽的优点，同时易于加工，具有一定的推广价值。
The invention discloses a design method for an impeller of a centrifugal pump with high specific speed, which belongs to the technical field of pumps. The invention provides design formulas and value ranges of geometric parameters such as impeller outlet diameter, impeller front cover plate inclination angle, impeller rear cover plate inclination angle, number of blades and outlet placement angle, etc. The high-flow low-head pump is designed as a centrifugal pump. Compared with the existing design theory that designs the pump with a specific speed between 400 and 600 as a mixed-flow pump or an axial-flow pump, it can achieve stable performance under variable operating conditions and a wide high-efficiency zone. Advantages, while easy to process, has a certain promotional value.
Description
Technical field
The present invention relates to a kind of design method of vane type oil pump major part, particularly a kind of specific speed is greater than 400 design method less than 600 centrifugal pump impeller.
Background technique
At present, along with the fast development of industrial or agricultural, big flow low-lift pump is widely used, and specific speed is all between 400 to 600, and according to the frequent needs variable parameter operation of actual conditions usually.According to existing pump design theory, by specific speed pump impeller is designed, specific speed is less than being designed to receded disk impeller at 300 o'clock, specific speed greater than 300 less than being designed to mixed-flow impeller at 500 o'clock, also claim the diagonal flow type impeller, specific speed was designed to aial flow impeller greater than 500 o'clock, and the pump that receded disk impeller will be housed usually is called centrifugal pump, the pump that mixed-flow impeller is housed is called mixed flow pump, and the pump that aial flow impeller is housed is called axial-flow pump.Therefore usually these big flow low-lift pumps are designed to mixed flow pump or axial-flow pump, but known mixed flow pump is compared with centrifugal pump with axial-flow pump, has the following disadvantages: (1) head curve does not have the head curve of centrifugal pump stable, have saddle area, system is extremely unstable during variable parameter operation.(2) efficient range of operation is narrower than the centrifugal pump, and efficient is lower during variable parameter operation.(3) processing difficulties.In fact existing centrifugal pump design method, specific speed can be designed to centrifugal pump at the pump below 400, but because there is certain Applicable scope in the design formula of geometric parameters such as its impeller outlet diameter, the forward and backward cover plate of impeller inclination angle, so specific speed can't be designed to centrifugal pump at the pump more than 400.Therefore, if can propose a kind of design method specific speed is designed to centrifugal pump greater than 400 less than 600 big flow low-lift pump, the deficiency that exists in the time of can avoiding that big flow low-lift pump is designed to mixed flow pump or axial-flow pump, improve the stability of pumping system operation greatly and improve running efficiency of system, and help production and processing.By retrieval, do not see so far specific speed greater than 400 less than the document of 600 centrifugal pump impeller design method with declare patent.
Summary of the invention
Technical problem to be solved by this invention is, for fear of specific speed is designed to mixed flow pump or axial-flow pump greater than 400 less than 600 big flow high-head pump, pumping system instability when causing variable parameter operation, operational efficiency are low, the deficiency of processing difficulties, a kind of high specific speed centrifugal pump impeller design method that the present invention proposes, can with specific speed greater than 400 less than 600 big flow low-lift pump be designed to performance curve stable, efficiently distinguish wide, the centrifugal pump that is easy to process, make it when variable parameter operation, system stability, efficient height.
Technological scheme of the present invention is:
A kind of specific speed greater than 400 less than 600 centrifugal pump impeller design method, wherein
1. impeller outlet diameter D
2
D
2Formula be: D
2=21.2n
s -1/6Q
1/6H
1/4N
-2/3
D in the formula
2-impeller outlet diameter, m; n
s-specific speed; The Q-design discharge, m
3/ h; The H-rated lift, m; The n-wheel speed, r/min;
2. front shroud of impeller inclination angle T
1Formula be: T
1=0.0001n
s 2-0.048n
s+ 64.836
3. back shroud of impeller inclination angle T
2Formula be: T
2=-0.0002n
s 2+ 0.183n
s+ 38.572
4. export laying angle β
2Span is 20 °～25 °.
5. the span of number of blade Z is 4～5;
The design of other geometric parameter of impeller is identical with existing characteristic of centrifugal pump design method.
The invention has the beneficial effects as follows: the high flow capacity low-lift pump of specific speed between 400 to 600 can be designed to centrifugal pump, it is wide to have stable, efficient range of operation, the advantage that is easy to process.
Description of drawings
Fig. 1 is the axis projection of embodiment of the invention impeller.
Fig. 2 is the form drawing of embodiment of the invention impeller.
Fig. 3 is the structural representation of embodiment of the invention impeller.
Among the figure: 1. front shroud of impeller inclination angle; 2. back shroud of impeller inclination angle; 3. impeller outlet diameter;
Embodiment
The present invention will be further described below in conjunction with drawings and Examples.
Embodiment's design conditions are flow Q=250m
3/ h, lift H=4m, revolution n=1450r/min, specific speed
In conjunction with Fig. 1 and Fig. 2, use design method of the present invention to front shroud of impeller inclination angle 1, the key geometric parameters such as outlet diameter 3 of back shroud of impeller inclination angle 2 impellers design.
D
2＝21.2·n
s -1/6·Q
1/6·H
1/4·n
-2/3
T
1＝0.0001n
s 2-0.048n
s+64.836；
T
2＝-0.0002n
s 2+0.183n
s+38.572；
In addition, outlet laying angle β
2=23 °, number of blade Z=5;
All the other geometric parameters are identical with method with existing characteristic of centrifugal pump design process, do not repeat them here.
The impeller that Fig. 3 designs for present embodiment, the head curve that cooperates the back test to record with spiral case is steady, efficiently distinguishes widely, obtains good operational effect.
Claims (1)
1. one kind high specific speed centrifugal pump impeller design method, it is characterized in that: impeller geometric parameter and design parameter satisfy following relation:
D
2＝21.2·n
s -1/6·Q
1/6·H
1/4·n
-2/3
T
1＝0.0001n
s 2-0.048n
s+64.836
T
2＝-0.0002n
s 2+0.183n
s+38.572
β
2＝20°～25°
Z＝4～6
In the formula,
D
2-impeller outlet diameter, m;
n
s-specific speed;
The Q-design discharge, m
3/ h;
The H-rated lift, m;
The n-wheel speed, r/min;
T
1-front shroud of impeller inclination angle, °;
T
2-back shroud of impeller inclination angle, °;
β
2-blade exit laying angle, °;
The Z-number of blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110002015 CN102062118A (en) | 2011-01-07 | 2011-01-07 | Design method for centrifugal pump impeller with high specific revolution number |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110002015 CN102062118A (en) | 2011-01-07 | 2011-01-07 | Design method for centrifugal pump impeller with high specific revolution number |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102062118A true CN102062118A (en) | 2011-05-18 |
Family
ID=43997548
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|---|---|---|---|
| CN 201110002015 Pending CN102062118A (en) | 2011-01-07 | 2011-01-07 | Design method for centrifugal pump impeller with high specific revolution number |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748323A (en) * | 2012-06-29 | 2012-10-24 | 江苏国泉泵业制造有限公司 | High specific speed helical centrifugal pump |
| CN103016398A (en) * | 2012-12-14 | 2013-04-03 | 清华大学 | Centrifugal impeller flow passage design method for controlling curvature distribution |
| CN103511328A (en) * | 2012-06-30 | 2014-01-15 | 江门市江海区坚尼士微电机厂有限公司 | Efficient water pump impeller |
| CN103912520A (en) * | 2013-12-31 | 2014-07-09 | 江苏大学 | Design method for nuclear main pump pressurized water chamber with eccentrically placed impeller for balancing radial force |
| CN103939389A (en) * | 2014-04-16 | 2014-07-23 | 江苏大学 | Multiple-working-condition hydraulic design method for guide vane type centrifugal pump |
| CN104005983A (en) * | 2014-05-07 | 2014-08-27 | 江苏大学 | Designing method of three operating points of impeller of high-specific-speed axial flow pump |
| CN104389815A (en) * | 2014-11-27 | 2015-03-04 | 南阳防爆集团股份有限公司 | Centrifugal fan for motor with high efficiency, low noise and ultrahigh specific speed |
| CN105089635A (en) * | 2015-07-01 | 2015-11-25 | 中国石油天然气股份有限公司 | Method and system for designing rear turbine of underground camera |
| CN105205339A (en) * | 2015-10-16 | 2015-12-30 | 江苏大学 | Multi-grade centrifugal pump guide vane hydraulic design method of high matching of inner and outer edge flow lines of blade |
| CN105626576A (en) * | 2016-01-07 | 2016-06-01 | 江苏大学 | Hydraulic design method for sea water desalination high-pressure booster pump |
| CN105864099A (en) * | 2016-05-24 | 2016-08-17 | 江苏大学 | Design method for outlet-end folded edge blade structure of impeller of middle-high-ratio rotating speed centrifugal pump |
| CN105927582A (en) * | 2016-05-24 | 2016-09-07 | 江苏大学 | Design method for folded-edge blade structure of inlet end of impeller of middle and high specific rotation speed centrifugal pump |
| CN105971929A (en) * | 2016-05-09 | 2016-09-28 | 江苏大学 | Structure design method for V-shaped cutting structure of edge folding blades at inlet end of impeller of double suction pump |
| CN105971926A (en) * | 2016-05-09 | 2016-09-28 | 江苏大学 | Design method of impeller double-end edge folding blade V-shaped cutting structure of double suction pump |
| CN106015084A (en) * | 2016-06-30 | 2016-10-12 | 中国大唐集团科学技术研究院有限公司华东分公司 | Centrifugal pump impeller capable of reducing flow rate |
| CN109162966A (en) * | 2018-10-25 | 2019-01-08 | 江苏泰丰泵业有限公司 | A kind of efficient submersible type flood-fighting pump guide vane |
| CN109630460A (en) * | 2018-11-02 | 2019-04-16 | 中国农业大学 | Water pump blade design method and system |
| CN110321660A (en) * | 2019-07-16 | 2019-10-11 | 重庆水轮机厂有限责任公司 | A kind of large-scale mixed-flow pump impeller design method of radial water outlet |
-
2011
- 2011-01-07 CN CN 201110002015 patent/CN102062118A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 《现代泵技术手册》 19950930 关醒凡 《泵的相似理论》 , * |
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748323A (en) * | 2012-06-29 | 2012-10-24 | 江苏国泉泵业制造有限公司 | High specific speed helical centrifugal pump |
| CN103511328A (en) * | 2012-06-30 | 2014-01-15 | 江门市江海区坚尼士微电机厂有限公司 | Efficient water pump impeller |
| CN103016398A (en) * | 2012-12-14 | 2013-04-03 | 清华大学 | Centrifugal impeller flow passage design method for controlling curvature distribution |
| CN103016398B (en) * | 2012-12-14 | 2015-06-10 | 清华大学 | Centrifugal impeller flow passage design method for controlling curvature distribution |
| CN103912520A (en) * | 2013-12-31 | 2014-07-09 | 江苏大学 | Design method for nuclear main pump pressurized water chamber with eccentrically placed impeller for balancing radial force |
| CN103939389B (en) * | 2014-04-16 | 2016-04-27 | 江苏大学 | A kind of guide-vane centrifugal pump multi-operating mode Hydraulic Design Method |
| CN103939389A (en) * | 2014-04-16 | 2014-07-23 | 江苏大学 | Multiple-working-condition hydraulic design method for guide vane type centrifugal pump |
| CN104005983A (en) * | 2014-05-07 | 2014-08-27 | 江苏大学 | Designing method of three operating points of impeller of high-specific-speed axial flow pump |
| CN104005983B (en) * | 2014-05-07 | 2016-08-31 | 江苏大学 | A kind of higher specific speed axial-flow pump impeller three operating point method for designing |
| CN104389815A (en) * | 2014-11-27 | 2015-03-04 | 南阳防爆集团股份有限公司 | Centrifugal fan for motor with high efficiency, low noise and ultrahigh specific speed |
| CN105089635A (en) * | 2015-07-01 | 2015-11-25 | 中国石油天然气股份有限公司 | Method and system for designing rear turbine of underground camera |
| CN105205339A (en) * | 2015-10-16 | 2015-12-30 | 江苏大学 | Multi-grade centrifugal pump guide vane hydraulic design method of high matching of inner and outer edge flow lines of blade |
| CN105626576A (en) * | 2016-01-07 | 2016-06-01 | 江苏大学 | Hydraulic design method for sea water desalination high-pressure booster pump |
| CN105971929A (en) * | 2016-05-09 | 2016-09-28 | 江苏大学 | Structure design method for V-shaped cutting structure of edge folding blades at inlet end of impeller of double suction pump |
| CN105971926A (en) * | 2016-05-09 | 2016-09-28 | 江苏大学 | Design method of impeller double-end edge folding blade V-shaped cutting structure of double suction pump |
| CN105864099A (en) * | 2016-05-24 | 2016-08-17 | 江苏大学 | Design method for outlet-end folded edge blade structure of impeller of middle-high-ratio rotating speed centrifugal pump |
| CN105927582A (en) * | 2016-05-24 | 2016-09-07 | 江苏大学 | Design method for folded-edge blade structure of inlet end of impeller of middle and high specific rotation speed centrifugal pump |
| CN105864099B (en) * | 2016-05-24 | 2018-06-26 | 江苏大学 | A kind of design method of middle higher specific speed centrifugal pump impeller port of export edge folding blades structure |
| CN106015084A (en) * | 2016-06-30 | 2016-10-12 | 中国大唐集团科学技术研究院有限公司华东分公司 | Centrifugal pump impeller capable of reducing flow rate |
| CN106015084B (en) * | 2016-06-30 | 2018-03-27 | 中国大唐集团科学技术研究院有限公司华东分公司 | A kind of centrifugal pump impeller for reducing flow |
| CN109162966A (en) * | 2018-10-25 | 2019-01-08 | 江苏泰丰泵业有限公司 | A kind of efficient submersible type flood-fighting pump guide vane |
| CN109162966B (en) * | 2018-10-25 | 2020-07-31 | 江苏泰丰泵业有限公司 | Efficient submersible flood-fighting emergency pump guide vane |
| CN109630460A (en) * | 2018-11-02 | 2019-04-16 | 中国农业大学 | Water pump blade design method and system |
| CN110321660A (en) * | 2019-07-16 | 2019-10-11 | 重庆水轮机厂有限责任公司 | A kind of large-scale mixed-flow pump impeller design method of radial water outlet |
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Application publication date: 20110518 |