CN110242612A - A kind of centrifugal impeller with splitterr vanes - Google Patents
A kind of centrifugal impeller with splitterr vanes Download PDFInfo
- Publication number
- CN110242612A CN110242612A CN201910491352.4A CN201910491352A CN110242612A CN 110242612 A CN110242612 A CN 110242612A CN 201910491352 A CN201910491352 A CN 201910491352A CN 110242612 A CN110242612 A CN 110242612A
- Authority
- CN
- China
- Prior art keywords
- splitterr vanes
- blade
- runner
- back shroud
- shroud
- 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
- 238000005516 engineering process Methods 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 claims abstract description 3
- 238000007493 shaping process Methods 0.000 claims abstract description 3
- 239000012530 fluid Substances 0.000 abstract description 13
- 238000009792 diffusion process Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000029142 excretion Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
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
Abstract
The invention discloses a kind of centrifugal impellers with splitterr vanes, it mainly include front shroud, blade, splitterr vanes, back shroud, it is separated by a certain distance setting between front shroud and back shroud and forms internal cavities, several blades are evenly distributed with by center in the shape of a spiral around on the inside of back shroud, internal cavities between front and rear cover plate are separated and form runner by adjacent blade, runner forms runner exit in the edge close to back shroud, is evenly arranged at runner exit there are two splitterr vanes；The front shroud, blade, splitterr vanes, back shroud are all made of sheet metal forming technology shaping, by being welded to form a closed impeller.When flowing out impeller the invention has the advantages that: fluid, splitterr vanes inhibit the diffusion of fluid, reduce the probability that whirlpool is formed at pressure fluctuation and impeller outlet in pump, elevator pump operation stability and efficiency；Splitterr vanes are shorter, are arranged only at the outlet of impeller, smaller on the influence of the excretion coefficient of runner, influence on the efficiency of pump small.
Description
Technical field
The present invention relates to the fields of vane pump, and in particular to a kind of centrifugal impeller with splitterr vanes.
Background technique
The stability concerning pump operation is vibrated, is one of the Important Problems of people's research all the time.Rotation inside pump
Component and the interference of stationary parts sound cause the pressure fluctuation in pump, to cause the vibration of pump.
It is one of the main method for inhibiting pump pressure pulsation using splitterr vanes.At present there are mainly two types of splitterr vanes:
One is a splitterr vanes impellers, a splitterr vanes are added among each runner, its advantage is that can effectively improve
Flow Field Distribution in impeller, but in small flow, blade consistency is insufficient, and small to confines fluid, impeller outlet, which is easy to produce, to be penetrated
Phenomena such as stream-tail, Secondary Flow；Another kind is secondary splitter blade impeller, and a long shunting leaf is placed in each runner
Piece and two short splitterr vanes, but secondary splitter blade runner is relatively narrow, will cause the efficiency decline of pump.In addition, above two
Kind splitterr vanes inlet side diameter is smaller, and splitterr vanes are longer, not only will increase the input of shaft power, can also change in runner
Flow Field Distribution.In short, the prior art: on the one hand, fluid is easy to happen diffusion at impeller outlet, induces pressure fluctuation, influences
The stability of pump operation reduces the efficiency of pump；On the other hand, the splitterr vanes of mainstream are longer, and impeller outlet fluid is being inhibited to expand
While dissipating, the motion state of fluid in pump runner will affect.
Summary of the invention
It is an object of the invention to overcome the shortcomings of the prior art, and provide a kind of centrifugation leaf with splitterr vanes
Wheel.
The object of the present invention is achieved by the following technical solutions: this centrifugal impeller with splitterr vanes, mainly
Including front shroud, blade, splitterr vanes, back shroud, runner, runner exit, it is separated by a certain distance between front shroud and back shroud
Setting, forms internal cavities, and back shroud inside is evenly distributed with several blades, adjacent blade by center in the shape of a spiral around
Internal cavities between front and rear cover plate are separated and are formed runner, runner forms runner in the edge close to back shroud and goes out
Mouthful, it is evenly arranged at runner exit there are two splitterr vanes；The front shroud, blade, splitterr vanes, back shroud are all made of punching
Technological forming is pressed, and by being welded to form a closed impeller.
Further, the blade and splitterr vanes are all made of cylindrical straightedge vane, blade with a thickness of t, shunt leaf
The thickness t of piece2=0.5~0.6t.
Further, the quantity of the blade is Z, the angle, θ between blade and splitterr vanes2=360/3Z.
Further, the length of the splitterr vanes is about the 15% of blade；The outlet side diameter D of splitterr vanes2With leaf
Piece is identical, inlet side diameter D=0.9~0.95D of splitterr vanes2。
The invention has the benefit that
1, when fluid flows out impeller, splitterr vanes inhibit the diffusion of fluid, and the pressure fluctuation and impeller reduced in pump goes out
The probability that whirlpool is formed at mouthful, promotes the stability and efficiency of pump operation；
2, splitterr vanes are shorter, are arranged only at the outlet of impeller, smaller on the influence of the excretion coefficient of runner, to the efficiency of pump
It influences small.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is structural plan figure of the invention.
Fig. 3 is structure sectional view of the invention.
Description of symbols: front shroud 1, blade 2, splitterr vanes 3, back shroud 4, runner 5, runner exit 6.
Specific embodiment
Below in conjunction with attached drawing, the present invention will be described in detail:
Embodiment: as shown in the picture, this centrifugal impeller with splitterr vanes mainly includes front shroud 1, blade 2, shunts
Blade 3, back shroud 4, runner 5, runner exit 6 are separated by a certain distance setting between front shroud 1 and back shroud 4, formed internal empty
Chamber, the inside of back shroud 4 are evenly distributed with several blades 2 by center in the shape of a spiral around, adjacent blade 2 by front shroud 1, after
Internal cavities between cover board 4 separate and are formed runner 5, and runner 5 forms runner exit 6 in the edge close to back shroud 4,
Splitterr vanes 3 there are two being evenly arranged at runner exit 6；The front shroud 1, blade 2, splitterr vanes 3, back shroud 4 are adopted
With sheet metal forming technology shaping, and by being welded to form a closed impeller.
Preferably, the blade 2 and splitterr vanes 3 are all made of cylindrical straightedge vane, blade 2 with a thickness of t, shunt
The thickness t of blade 32=0.5~0.6t (t2The too big excretion coefficient that can reduce runner, too it is small then can intensity it is inadequate).
Preferably, the quantity of the blade 2 is Z, the angle, θ between blade 2 and splitterr vanes 32=360/3Z.
Preferably, the length of the splitterr vanes 3 be about blade 2 15% (too it is short be not achieved inhibit impeller outlet stream
The effect of body diffusion, too long to will affect pump runner internal flow state)；The outlet side diameter D of splitterr vanes 32It is identical as blade 2, point
Flow inlet side diameter D=0.9~0.95D of blade 32。
The course of work of the invention: fluid is sucked from impeller inlet when impeller works, into each runner 5 of impeller, leaf
Piece 2 does work to fluid, pushes fluid out impeller.When fluid passes through splitterr vanes 3, splitterr vanes 3 do work, and inhibit fluid diffusion,
The probability that whirlpool is formed at pressure fluctuation and impeller outlet in pump is reduced, the stability and efficiency of pump are improved.
It is understood that it will be understood by those skilled in the art that being subject to technical solution of the present invention and inventive concept
It all should fall within the scope of protection of the appended claims of the present invention with replacement or change.
Claims (4)
1. a kind of centrifugal impeller with splitterr vanes, it is characterised in that: mainly include front shroud (1), blade (2), splitterr vanes
(3), back shroud (4), runner (5), runner exit (6), are separated by a certain distance setting, shape between front shroud (1) and back shroud (4)
At internal cavities, several blades (2), adjacent blade are evenly distributed in the shape of a spiral around by center on the inside of back shroud (4)
(2) internal cavities between front shroud (1), back shroud (4) are separated and is formed runner (5), runner (5) is close to back shroud
(4) edge forms runner exit (6), is evenly arranged that there are two splitterr vanes (3) at runner exit (6)；The front cover
Plate (1), blade (2), splitterr vanes (3), back shroud (4) are all made of sheet metal forming technology shaping, and by being welded to form a closing
Impeller.
2. the centrifugal impeller according to claim 1 with splitterr vanes, it is characterised in that: the blade (2) and shunting leaf
Piece (3) is all made of cylindrical straightedge vane, blade (2) with a thickness of t, the thickness t of splitterr vanes (3)2=0.5~0.6t.
3. the centrifugal impeller according to claim 1 with splitterr vanes, it is characterised in that: the quantity of the blade (2) is
Z, the angle, θ between blade (2) and splitterr vanes (3)2=360/3Z.
4. the centrifugal impeller according to claim 1 with splitterr vanes, it is characterised in that: the length of the splitterr vanes (3)
Degree is the 15% of blade (2)；The outlet side diameter D of splitterr vanes (3)2It is identical as blade (2), the inlet side of splitterr vanes (3)
Diameter D=0.9~0.95D2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910491352.4A CN110242612B (en) | 2019-06-06 | Centrifugal impeller with splitter blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910491352.4A CN110242612B (en) | 2019-06-06 | Centrifugal impeller with splitter blades |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110242612A true CN110242612A (en) | 2019-09-17 |
| CN110242612B CN110242612B (en) | 2024-04-26 |
Family
ID=
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855607A (en) * | 2021-01-18 | 2021-05-28 | 江苏大学 | Centrifugal pump impeller with a plurality of short blades |
Citations (6)
| 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 |
| US20190055844A1 (en) * | 2017-08-18 | 2019-02-21 | Pratt & Whitney Canada Corp. | Impeller |
| CN210290254U (en) * | 2019-06-06 | 2020-04-10 | 南方泵业股份有限公司 | Centrifugal impeller with splitter blades |
Patent Citations (6)
| 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 |
| US20190055844A1 (en) * | 2017-08-18 | 2019-02-21 | Pratt & Whitney Canada Corp. | Impeller |
| CN210290254U (en) * | 2019-06-06 | 2020-04-10 | 南方泵业股份有限公司 | Centrifugal impeller with splitter blades |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112855607A (en) * | 2021-01-18 | 2021-05-28 | 江苏大学 | Centrifugal pump impeller with a plurality of short blades |
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