CN110242612B - A centrifugal impeller with splitter blades - Google Patents
A centrifugal impeller with splitter blades Download PDFInfo
- Publication number
- CN110242612B CN110242612B CN201910491352.4A CN201910491352A CN110242612B CN 110242612 B CN110242612 B CN 110242612B CN 201910491352 A CN201910491352 A CN 201910491352A CN 110242612 B CN110242612 B CN 110242612B
- Authority
- CN
- China
- Prior art keywords
- blades
- cover plate
- splitter
- rear cover
- flow channel
- 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.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/24—Vanes
- F04D29/242—Geometry, shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/688—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- External Artificial Organs (AREA)
Abstract
本发明公开了一种带分流叶片的离心叶轮，主要包括前盖板、叶片、分流叶片、后盖板，前盖板与后盖板之间相距一定距离设置形成内部空腔，后盖板内侧由中心向四周呈螺旋状均匀分布有若干叶片，相邻的叶片将前后盖板之间的内部空腔分隔开并形成流道，流道在靠近后盖板的边缘处形成流道出口，在流道出口处均匀布置有两个分流叶片；所述前盖板、叶片、分流叶片、后盖板均采用冲压工艺成型，通过焊接组成一个封闭的叶轮。本发明有益效果：流体流出叶轮时，分流叶片抑制流体的扩散，降低泵内的压力脉动和叶轮出口处漩涡形成的几率，提升泵运行稳定性和效率；分流叶片较短，仅布置在叶轮的出口，对流道的排挤系数影响较小，对泵的效率影响小。
The present invention discloses a centrifugal impeller with splitter blades, which mainly includes a front cover plate, blades, splitter blades, and a rear cover plate. The front cover plate and the rear cover plate are arranged at a certain distance to form an internal cavity. The inner side of the rear cover plate is evenly distributed with a number of blades in a spiral shape from the center to the surroundings. The adjacent blades separate the internal cavity between the front and rear cover plates and form a flow channel. The flow channel forms a flow channel outlet at the edge close to the rear cover plate, and two splitter blades are evenly arranged at the flow channel outlet. The front cover plate, blades, splitter blades, and rear cover plate are all formed by a stamping process and are welded to form a closed impeller. The present invention has the following beneficial effects: when the fluid flows out of the impeller, the splitter blades inhibit the diffusion of the fluid, reduce the pressure pulsation in the pump and the probability of vortex formation at the impeller outlet, and improve the pump operation stability and efficiency; the splitter blades are short and are only arranged at the outlet of the impeller, which has little effect on the displacement coefficient of the flow channel and the efficiency of the pump.
Description
技术领域Technical Field
本发明涉及叶片泵的领域，具体涉及一种带分流叶片的离心叶轮。The invention relates to the field of vane pumps, in particular to a centrifugal impeller with splitter blades.
背景技术Background technique
振动关乎泵运行的稳定性，一直以来是人们研究的重点问题之一。泵内部的旋转部件与静止部件动静干扰引起泵内的压力脉动，从而造成泵的振动。Vibration is related to the stability of pump operation and has always been one of the key issues studied. The dynamic and static interference between the rotating and stationary parts inside the pump causes pressure pulsation in the pump, thus causing pump vibration.
采用分流叶片是抑制泵内压力脉动的主要方法之一。目前分流叶片主要有两种：一种是一次分流叶片叶轮，在每个流道中间加入一个分流叶片，其优点是可以有效的改善叶轮内的流场分布，但在小流量时，叶片稠密度不足，对流体约束小，叶轮出口容易产生射流–尾迹、二次流等现象；另一种是二次分流叶片叶轮，在每个流道内放置一个长的分流叶片和两个短的分流叶片，但二次分流叶片流道较窄，会造成泵的效率下降。此外，以上的两种分流叶片进口边直径均较小，分流叶片较长，不仅会增加轴功率的输入，也会改变流道内的流场分布。总之，现有技术：一方面，叶轮出口处流体容易发生扩散，诱发压力脉动，影响泵运行的稳定性，降低泵的效率；另一方面，主流的分流叶片较长，在抑制叶轮出口流体扩散的同时，会影响泵流道内流体的运动状态。The use of splitter blades is one of the main methods to suppress pressure pulsation in the pump. At present, there are two main types of splitter blades: one is a primary splitter blade impeller, in which a splitter blade is added in the middle of each flow channel. The advantage is that it can effectively improve the flow field distribution in the impeller, but at a small flow rate, the blade density is insufficient, the fluid constraint is small, and the impeller outlet is prone to jet-wake, secondary flow and other phenomena; the other is a secondary splitter blade impeller, in which a long splitter blade and two short splitter blades are placed in each flow channel, but the secondary splitter blade flow channel is narrow, which will cause the pump efficiency to decrease. In addition, the inlet edge diameters of the above two splitter blades are both small, and the splitter blades are longer, which will not only increase the input of shaft power, but also change the flow field distribution in the flow channel. In summary, the existing technology: on the one hand, the fluid at the impeller outlet is prone to diffusion, inducing pressure pulsation, affecting the stability of the pump operation, and reducing the efficiency of the pump; on the other hand, the mainstream splitter blade is longer, which will affect the motion state of the fluid in the pump flow channel while suppressing the diffusion of the impeller outlet fluid.
发明内容Summary of the invention
本发明的目的在于克服现有技术存在的不足，而提供一种带分流叶片的离心叶轮。The purpose of the present invention is to overcome the deficiencies in the prior art and provide a centrifugal impeller with splitter blades.
本发明的目的是通过如下技术方案来完成的：这种带分流叶片的离心叶轮，主要包括前盖板、叶片、分流叶片、后盖板、流道、流道出口，前盖板与后盖板之间相距一定距离设置，形成内部空腔，后盖板内侧由中心向四周呈螺旋状均匀分布有若干叶片，相邻的叶片将前后盖板之间的内部空腔分隔开并形成流道，流道在靠近后盖板的边缘处形成流道出口，在流道出口处均匀布置有两个分流叶片；所述前盖板、叶片、分流叶片、后盖板均采用冲压工艺成型，并通过焊接组成一个封闭的叶轮。The objective of the present invention is achieved through the following technical scheme: the centrifugal impeller with splitter blades mainly comprises a front cover plate, blades, splitter blades, a rear cover plate, a flow channel, and a flow channel outlet. The front cover plate and the rear cover plate are arranged at a certain distance to form an internal cavity. A plurality of blades are evenly distributed on the inner side of the rear cover plate in a spiral shape from the center to the surrounding area. Adjacent blades separate the internal cavity between the front and rear cover plates and form a flow channel. The flow channel forms a flow channel outlet at the edge close to the rear cover plate, and two splitter blades are evenly arranged at the flow channel outlet. The front cover plate, blades, splitter blades, and rear cover plate are all formed by a stamping process and welded to form a closed impeller.
进一步讲，所述叶片和分流叶片均采用圆柱形等厚叶片，叶片的厚度为t，分流叶片的厚度t2＝0.5～0.6t。Furthermore, the blades and splitter blades are both cylindrical blades of equal thickness, the thickness of the blade is t, and the thickness of the splitter blade is t 2 = 0.5-0.6t.
进一步讲，所述叶片的数量为Z，叶片与分流叶片之间的角度θ2＝360/3Z。Furthermore, the number of the blades is Z, and the angle θ 2 between the blades and the splitter blades is 360/3Z.
进一步讲，所述分流叶片的长度约为叶片的15％；分流叶片的出口边直径D2与叶片相同，分流叶片的进口边直径D＝0.9～0.95D2。Furthermore, the length of the splitter blade is about 15% of the blade; the outlet edge diameter D2 of the splitter blade is the same as that of the blade, and the inlet edge diameter D of the splitter blade is 0.9-0.95D2 .
本发明的有益效果为：The beneficial effects of the present invention are:
1、在流体流出叶轮时，分流叶片抑制流体的扩散，降低泵内的压力脉动和叶轮出口处漩涡形成的几率，提升泵运行的稳定性和效率；1. When the fluid flows out of the impeller, the splitter blades inhibit the diffusion of the fluid, reduce the pressure pulsation in the pump and the probability of vortex formation at the impeller outlet, and improve the stability and efficiency of the pump operation;
2、分流叶片较短，仅布置在叶轮的出口，对流道的排挤系数影响较小，对泵的效率影响小。2. The splitter blades are shorter and are only arranged at the outlet of the impeller, which has little effect on the displacement coefficient of the flow channel and the efficiency of the pump.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1为本发明的结构示意图。FIG1 is a schematic structural diagram of the present invention.
图2为本发明的结构平面图。FIG. 2 is a structural plan view of the present invention.
图3为本发明的结构剖视图。FIG3 is a cross-sectional view of the structure of the present invention.
附图标记说明：前盖板1、叶片2、分流叶片3、后盖板4、流道5、流道出口6。Description of the reference numerals: front cover plate 1 , blade 2 , splitter blade 3 , rear cover plate 4 , flow channel 5 , flow channel outlet 6 .
具体实施方式Detailed ways
下面将结合附图对本发明做详细的介绍：The present invention will be described in detail below with reference to the accompanying drawings:
实施例：如附图所示，这种带分流叶片的离心叶轮，主要包括前盖板1、叶片2、分流叶片3、后盖板4、流道5、流道出口6，前盖板1与后盖板4之间相距一定距离设置，形成内部空腔，后盖板4内侧由中心向四周呈螺旋状均匀分布有若干叶片2，相邻的叶片2将前盖板1、后盖板4之间的内部空腔分隔开并形成流道5，流道5在靠近后盖板4的边缘处形成流道出口6，在流道出口6处均匀布置有两个分流叶片3；所述前盖板1、叶片2、分流叶片3、后盖板4均采用冲压工艺成型，并通过焊接组成一个封闭的叶轮。Embodiment: As shown in the accompanying drawings, the centrifugal impeller with splitter blades mainly comprises a front cover plate 1, blades 2, splitter blades 3, a rear cover plate 4, a flow channel 5, and a flow channel outlet 6. The front cover plate 1 and the rear cover plate 4 are arranged at a certain distance to form an internal cavity. A plurality of blades 2 are evenly distributed on the inner side of the rear cover plate 4 in a spiral shape from the center to the surrounding area. Adjacent blades 2 separate the internal cavity between the front cover plate 1 and the rear cover plate 4 to form a flow channel 5. The flow channel 5 forms a flow channel outlet 6 at the edge close to the rear cover plate 4, and two splitter blades 3 are evenly arranged at the flow channel outlet 6. The front cover plate 1, blades 2, splitter blades 3, and rear cover plate 4 are all formed by a stamping process and welded to form a closed impeller.
作为优选，所述叶片2和分流叶片3均采用圆柱形等厚叶片，叶片2的厚度为t，分流叶片3的厚度t2＝0.5～0.6t(t2太大会减小流道的排挤系数，太小则会强度不够)。Preferably, the blade 2 and the splitter blade 3 are both cylindrical blades of equal thickness, the thickness of the blade 2 is t, and the thickness of the splitter blade 3 is t 2 =0.5-0.6t (if t 2 is too large, the displacement coefficient of the flow channel will be reduced, and if it is too small, the strength will be insufficient).
作为优选，所述叶片2的数量为Z，叶片2与分流叶片3之间的角度θ2＝360/3Z。Preferably, the number of the blades 2 is Z, and the angle θ 2 between the blade 2 and the splitter blade 3 is 360/3Z.
作为优选，所述分流叶片3的长度约为叶片2的15％(太短达不到抑制叶轮出口流体扩散的效果，太长会影响泵流道内部流态)；分流叶片3的出口边直径D2与叶片2相同，分流叶片3的进口边直径D＝0.9～0.95D2。Preferably, the length of the splitter blade 3 is about 15% of the blade 2 (too short will not suppress the diffusion of the impeller outlet fluid, too long will affect the flow pattern inside the pump channel); the outlet edge diameter D2 of the splitter blade 3 is the same as that of the blade 2, and the inlet edge diameter D of the splitter blade 3 is 0.9-0.95D2 .
本发明的工作过程：叶轮工作时流体从叶轮进口吸入，进入叶轮的各流道5内，叶片2对流体做功，使流体流出叶轮。流体经过分流叶片3时，分流叶片3做功，抑制流体扩散，降低了泵内的压力脉动和叶轮出口处漩涡形成的几率，提高了泵的稳定性和效率。The working process of the present invention is as follows: when the impeller is working, the fluid is sucked in from the impeller inlet and enters each flow channel 5 of the impeller, and the blades 2 do work on the fluid, so that the fluid flows out of the impeller. When the fluid passes through the splitter blades 3, the splitter blades 3 do work to inhibit the diffusion of the fluid, reduce the pressure pulsation in the pump and the probability of vortex formation at the impeller outlet, and improve the stability and efficiency of the pump.
可以理解的是，对本领域技术人员来说，对本发明的技术方案及发明构思加以等同替换或改变都应属于本发明所附的权利要求的保护范围。It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and inventive concept of the present invention should fall within the protection scope of the claims attached to the present invention.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910491352.4A CN110242612B (en) | 2019-06-06 | 2019-06-06 | A centrifugal impeller with splitter blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910491352.4A CN110242612B (en) | 2019-06-06 | 2019-06-06 | A centrifugal impeller with splitter blades |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110242612A CN110242612A (en) | 2019-09-17 |
| CN110242612B true CN110242612B (en) | 2024-04-26 |
Family
ID=67886213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910491352.4A Active CN110242612B (en) | 2019-06-06 | 2019-06-06 | A centrifugal impeller with splitter blades |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110242612B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110905850A (en) * | 2019-10-28 | 2020-03-24 | 天津怡和嘉业医疗科技有限公司 | Impellers, fans and ventilation therapy devices for ventilation therapy devices |
| CN110953186A (en) * | 2019-12-26 | 2020-04-03 | 兰州理工大学 | Centrifugal pump impeller with separated blades |
| CN112855607A (en) * | 2021-01-18 | 2021-05-28 | 江苏大学 | Centrifugal pump impeller with a plurality of short blades |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2426027Y (en) * | 1999-03-13 | 2001-04-04 | 格伦德福什联合股份有限公司 | Radial structure type impeller for centrifugal pump |
| CN102748324A (en) * | 2012-07-11 | 2012-10-24 | 上海东方泵业(集团)有限公司 | Centrifugal pump impeller with low specific speed |
| CN103953583A (en) * | 2014-04-04 | 2014-07-30 | 上海第一水泵厂有限公司 | Horizontal self-balanced centrifugal pump with first-stage compound impeller |
| JP2015183575A (en) * | 2014-03-24 | 2015-10-22 | 三菱重工業株式会社 | Channel formation part, casing and centrifugal type rotary machine |
| CN210290254U (en) * | 2019-06-06 | 2020-04-10 | 南方泵业股份有限公司 | Centrifugal impeller with splitter vanes |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10669854B2 (en) * | 2017-08-18 | 2020-06-02 | Pratt & Whitney Canada Corp. | Impeller |
-
2019
- 2019-06-06 CN CN201910491352.4A patent/CN110242612B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2426027Y (en) * | 1999-03-13 | 2001-04-04 | 格伦德福什联合股份有限公司 | Radial structure type impeller for centrifugal pump |
| CN102748324A (en) * | 2012-07-11 | 2012-10-24 | 上海东方泵业(集团)有限公司 | Centrifugal pump impeller with low specific speed |
| JP2015183575A (en) * | 2014-03-24 | 2015-10-22 | 三菱重工業株式会社 | Channel formation part, casing and centrifugal type rotary machine |
| CN103953583A (en) * | 2014-04-04 | 2014-07-30 | 上海第一水泵厂有限公司 | Horizontal self-balanced centrifugal pump with first-stage compound impeller |
| CN210290254U (en) * | 2019-06-06 | 2020-04-10 | 南方泵业股份有限公司 | Centrifugal impeller with splitter vanes |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110242612A (en) | 2019-09-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110242612B (en) | A centrifugal impeller with splitter blades | |
| CN103291653B (en) | A kind of low-specific speed impeller and blade design method thereof | |
| CN105971931B (en) | A kind of design method of receded disk impeller splitterr vanes | |
| CN210290254U (en) | Centrifugal impeller with splitter vanes | |
| CN109209987B (en) | A kind of anti-cavitation centrifugal pump impeller and centrifugal pump | |
| CN103775377B (en) | One kind adopts deviated splitter vane Turo pump Hydraulic Design Method | |
| CN110159586A (en) | A kind of double-layer staggered blade impellers | |
| CN107061348B (en) | Low specific speed centrifugal pump impeller | |
| CN115559932A (en) | Cover plate extension type low-noise pump impeller with splitter blades | |
| CN203978928U (en) | A kind of spatial guide blade with the drag reduction hole, whirlpool that disappears | |
| CN104537165B (en) | The radial vane and its design method of a kind of grooved configuration | |
| CN206290481U (en) | A kind of centrifugal pump closed type impeller | |
| CN101737359B (en) | Asymmetric self-circulation processing case with slotting position of sine distribution for centrifugal compressor | |
| CN205117796U (en) | Centrifugal pump impeller with low specific speed | |
| CN204099272U (en) | A kind of low specific-speed centrifugal pump impeller | |
| CN104279181B (en) | Centrifugal pump impeller | |
| CN105697412A (en) | Blade structure of centrifugal pump | |
| CN206668611U (en) | A kind of extremely low specific speed centrifugal pump impeller | |
| CN108443218A (en) | A kind of impeller of pump with secondary splitter blade | |
| CN103452910B (en) | A kind of staggered centrifugal pump space guide vane body | |
| CN206912792U (en) | A cartridge type chip removal machine | |
| CN104791293A (en) | Method for improving cavitation-erosion performance of centrifugal pump | |
| CN114876693A (en) | Through-flow turbine device with curved groove | |
| CN206478038U (en) | A kind of blade wheel chamber for suppressing axial-flow pump blade tip clearance cavitation | |
| CN209743232U (en) | Improved narrow flow passage centrifugal pump impeller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20250217 Address after: 311107 Renhe Road 46, Renhe street, Yuhang District, Hangzhou, Zhejiang Patentee after: NANFANG ZHONGJIN ENVIRONMENT CO.,LTD. Country or region after: China Address before: 311107 Renhe Street Dongfeng Village, Yuhang District, Hangzhou City, Zhejiang Province Patentee before: NANFANG PUMP INDUSTRY Co.,Ltd. Country or region before: China |
|
| CP03 | Change of name, title or address |
Address after: No. 46 Hangzhou City, Zhejiang province 311107 Yuhang District Renhe Street Renhe Road Patentee after: NANFANG PUMP INDUSTRY Co.,Ltd. Country or region after: China Address before: No. 46 Hangzhou City, Zhejiang province 311107 Yuhang District Renhe Street Renhe Road Patentee before: NANFANG ZHONGJIN ENVIRONMENT CO.,LTD. Country or region before: China |