CN203532331U - Staggered centrifugal pump space guide vane - Google Patents
Staggered centrifugal pump space guide vane Download PDFInfo
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- CN203532331U CN203532331U CN201320366973.8U CN201320366973U CN203532331U CN 203532331 U CN203532331 U CN 203532331U CN 201320366973 U CN201320366973 U CN 201320366973U CN 203532331 U CN203532331 U CN 203532331U
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- stator
- guide blade
- spatial guide
- guide vane
- centrifugal pump
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Abstract
The utility model relates to a staggered centrifugal pump space guide vane which comprises upper guide vanes (2), lower guide vanes (3), fixing vanes (6), a hub (4) and a housing (1). Each upper guide vane (2) and each lower guide vane (3) are the upper part and the lower part formed by cutting a space guide vane designed based on traditional methods along the middle flow line thereof, and are three-dimensionally warped. The upper guide vanes (2) and the lower guide vanes (3) are evenly distributed in a staggered manner. In the circumferential direction, each upper guide vane (2) is located near the central position of the part between two lower guide vanes (3) adjacent to the upper guide vane (2). The upper guide vanes (2) are fixed on the housing. The lower guide vanes (3) are fixed on the hub. By means of the staggered and even arrangement of the upper guide vanes and the lower guide vanes, flowing status of fluid in a space guide vane runner is improved, outlet pressure and speed distribution of the space guide vane are even, secondary flow and axial vortex areas are reduced remarkably, and accordingly pump outlet pressure pulse is lowered, and evident damping and noise reduction effect is achieved.
Description
Technical field
The utility model relates to centrifugal pump spatial guide blade body, belongs to hydraulic machinery field.
Background technique
Spatial guide blade body is also blower inlet casing, its main feature be axial major diameter to short, for various Pump for well (deep-well pump, submersible pump) and guide vane mixed flow pump, its internal flow is complicated, leaf curling degree is larger, has certain design difficulty.Spatial guide blade plays the effect of whole pumping chamber, impeller outlet liquid collection get up to deliver to subordinate's impeller inlet or export pipeline, transfer speed can be pressure energy, release rate circular rector.While designing traditional spatial guide blade, should determine that stator is into and out of bicker, inside and outside streamline, axial length and center line of flow path.Vane inlet angle is got and is greater than flow angle, and exit angle is generally got 90 °, and interior streamline is the intersection of hub body and stator blade, and outflow line is the intersection of housing and stator blade, the axial length L of stator=(0.5～0.7) D
2(D
2for impeller outer diameter), center line of flow path is that the flow that its two small flow channels of dividing are passed through is equated.In spatial guide blade body, liquid flows to and changes when the annular space from impeller outlet inflow space diffuser, in the import of spatial guide blade blade, there is a large amount of backflows and vortex, and there is a large amount of Secondary Flows at spatial guide blade suction surface, produce larger hydraulic loss, affect the efficiency of pump, the hydraulic loss in MSDS prescribed space diffuser accounts for 40% ~ 50% of the interior hydraulic loss of pump.Meanwhile, the phenomenons such as these Secondary Flows, vortex more can be aggravated pump housing vibration, the noise of fluid induced, reduce pump operation stability.Therefore, spatial guide blade has larger impact to the combination property of centrifugal pump.
At present, the domestic research to centrifugal pump spatial guide blade, is mainly structure, external characteristics, to interior flow field particularly in spatial guide blade body the research of pressure pulsation very few.Article < < blower inlet casing geometric parameter is chosen and pump performance is affected to > > (Institutes Of Technology Of Taiyuan's journal, 2002,33 (4)) studied the impact of the geometric parameter of spatial guide blade on pump performance.Flow analysis > > (fluid machinery in article < < centrifugal pump inner flew field and spatial guide blade, 2008,36 (07)) centrifugal pump of carrying space stator is carried out to numerical calculation, obtained spatial guide blade internal speed and pressure distribution.External article (Hydrodynamic Design of Pump Diffuser Using Inverse Design Method and CFD. Journal of Fluids Engineering, Vol. 124/319) adopt " three-dimensional anti-design method " design space stator, and by computation fluid dynamics (CFD) and oil film method, test the internal flow to spatial guide blade and study, but these researchs all do not relate to the measure that reduces the pulsation of spatial guide blade outlet pressure.
Model utility content
The purpose of this utility model is in order to overcome the defect of prior art, and a kind of staggered centrifugal pump spatial guide blade body that can reduce the pulsation of spatial guide blade outlet pressure is provided.
A kind of staggered centrifugal pump spatial guide blade body, by upper stator, lower stator, fixedly leaf, hub body and housing form, described upper stator and described lower stator stagger arrangement are uniformly distributed, described upper stator be fixed on described housing, described lower stator is fixed on described hub body, between described hub body and described housing, by described fixedly leaf, is fixedly connected with.
In such scheme, described upper stator is positioned at the intermediate portion of its adjacent two lower stators in a circumferential direction.
In such scheme, the number of blade of described upper stator is identical with the number of blade of described lower stator.
In such scheme, described upper stator and described lower stator are two-part up and down of obtaining of correspondence after being cut along its center line of flow path by traditional spatial guide blade blade, and described upper stator and described lower stator keep the three-dimensional twisted pattern of traditional spatial guide blade blade.
In such scheme, the axial position of described upper stator and lower stator is identical with the axial position of traditional spatial guide blade blade.
In such scheme, the quantity of described fixedly leaf is 4～8, along described hub body circular row, is evenly arranged.
Adopt the utility model advantage to be: simple in structure, the utility model is evenly arranged to improve the flowing state of fluid in spatial guide blade runner by upper and lower stator stagger arrangement, can alleviate the sound interference effect of impeller and spatial guide blade, can make spatial guide blade body outlet velocity, pressure distribution more even, Secondary Flow in gate vane channel and axial vortex scope and intensity obviously reduce, reduce the vibration noise of fluid induced, improved pump operation stationarity.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated
Fig. 1 is spatial guide blade body axis projection; Solid line is partly the separatrix of upper stator and lower stator in the middle of figure Leaf, wherein goes up stator and housing is fixed, and lower stator and hub body are fixed.
Fig. 2 is spatial guide blade body B-B sectional view.
Fig. 3 be spatial guide blade body plan view (from A to).
Fig. 4 is staggered spatial guide blade body outlet velocity cloud atlas 4(1) and Traditional Space diffuser outlet velocity cloud atlas 4(2).
Fig. 5 is staggered spatial guide blade body outlet pressure cloud atlas 5(1) and Traditional Space diffuser outlet pressure cloud atlas 5(2).
Fig. 6 is staggered spatial guide blade body and Traditional Space diffuser outlet middle pressure pulsation comparison diagram.The longitudinal axis represents pressure coefficient ψ=P/ (0.5* ρ U
), wherein P is pressure, the density that ρ is fluid, U
2for impeller outlet peripheral velocity, transverse axis represents the time.
1. housings in Fig. 1,2. go up stator, 3. descend stator, 4. hub body, 5. impeller, 6. fixing leaf.
Embodiment
In conjunction with Fig. 1,2,3, staggered centrifugal pump spatial guide blade body described in the utility model comprises stator 2, lower stator 3, fixedly leaf 6, hub body 4 and housing 1, on spatial guide blade body, stator 2 and lower stator 3 stagger arrangement are uniformly distributed, upper stator 2 is fixed on housing 1, and lower stator 3 is fixed on hub body 4.Upper stator 2 is positioned near the centre of its adjacent two lower stators 3 in a circumferential direction.Upper stator 2 and lower stator 3 are to obtain along top and the bottom that its center line of flow path cuts by using conventional methods the stator blade designing.Upper stator 2 is identical with the axial position of former spatial guide blade with the axial position of lower stator 3.Hub body 4 passes through fixedly leaf 6 and connects and fix with housing 1, and fixedly leaf is 4～8 blades, and circular row is evenly arranged.This spatial guide blade body can adopt casting technique to obtain, and material is selected according to carried media property.
The technical solution of the utility model improved the flowing state of fluid in spatial guide blade body and alleviate impeller and stator between sound interference effect, in conjunction with Fig. 4,5,6 computation fluid dynamicses (CFD) analysis result, obtain: staggered centrifugal pump spatial guide blade body outlet pressure, velocity distribution are more even, obviously reduce in Secondary Flow, axial vortex region, pump discharge pressure pulsation reduces, thereby reduce the pressure pulsation in spatial guide blade body runner, effectively reduce pump housing vibration and the noise level of fluid induced.
Claims (6)
1. a staggered centrifugal pump spatial guide blade body, it is characterized in that: by upper stator (2), lower stator (3), fixedly leaf (6) hub body (4) and housing (1) form, described upper stator (2) and described lower stator (3) stagger arrangement are uniformly distributed, described upper stator (2) be fixed on described housing (1), it is upper that described lower stator (3) is fixed on described hub body (4), between described hub body (4) and described housing (1), by described fixedly leaf (6), is fixedly connected with.
2. staggered centrifugal pump spatial guide blade body as claimed in claim 1, is characterized in that: described upper stator (2) is positioned at the intermediate portion of its adjacent two lower stators (3) in a circumferential direction.
3. staggered centrifugal pump spatial guide blade body as claimed in claim 1, is characterized in that: the number of blade of described upper stator (2) is identical with the number of blade of described lower stator (3).
4. staggered centrifugal pump spatial guide blade body as claimed in claim 1, it is characterized in that: described upper stator (2) and described lower stator (3) are two-part up and down of obtaining of correspondence after being cut along its center line of flow path by traditional spatial guide blade blade, described upper stator (2) and described lower stator (3) keep the three-dimensional twisted pattern of traditional spatial guide blade blade.
5. staggered centrifugal pump spatial guide blade body as claimed in claim 1, is characterized in that: the axial position of described upper stator (2) and lower stator (3) is identical with the axial position of traditional spatial guide blade blade.
6. staggered centrifugal pump spatial guide blade body as claimed in claim 1, is characterized in that: the quantity of described fixedly leaf (6) is 4～8, along described hub body (4) circular row, is evenly arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320366973.8U CN203532331U (en) | 2013-06-25 | 2013-06-25 | Staggered centrifugal pump space guide vane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320366973.8U CN203532331U (en) | 2013-06-25 | 2013-06-25 | Staggered centrifugal pump space guide vane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203532331U true CN203532331U (en) | 2014-04-09 |
Family
ID=50418544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320366973.8U Expired - Fee Related CN203532331U (en) | 2013-06-25 | 2013-06-25 | Staggered centrifugal pump space guide vane |
Country Status (1)
| Country | Link |
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| CN (1) | CN203532331U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452910A (en) * | 2013-06-25 | 2013-12-18 | 江苏大学 | Staggered centrifugal pump spatial guide vane |
| CN107165852A (en) * | 2017-06-29 | 2017-09-15 | 吉林市奥吉通泵业有限责任公司 | A kind of high intensity is modified the enhanced embedded-type modularized immersible pump of polyformaldehyde composite material |
| CN107829977A (en) * | 2017-11-08 | 2018-03-23 | 大连理工大学 | The stagger arrangement stator and core main pump of radial load on a kind of reduction double shrouded wheel |
| CN108843621A (en) * | 2018-08-02 | 2018-11-20 | 榆林学院 | A kind of spatial guide blade with guide face partition |
-
2013
- 2013-06-25 CN CN201320366973.8U patent/CN203532331U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452910A (en) * | 2013-06-25 | 2013-12-18 | 江苏大学 | Staggered centrifugal pump spatial guide vane |
| CN103452910B (en) * | 2013-06-25 | 2016-01-20 | 江苏大学 | A kind of staggered centrifugal pump space guide vane body |
| CN107165852A (en) * | 2017-06-29 | 2017-09-15 | 吉林市奥吉通泵业有限责任公司 | A kind of high intensity is modified the enhanced embedded-type modularized immersible pump of polyformaldehyde composite material |
| CN107829977A (en) * | 2017-11-08 | 2018-03-23 | 大连理工大学 | The stagger arrangement stator and core main pump of radial load on a kind of reduction double shrouded wheel |
| CN108843621A (en) * | 2018-08-02 | 2018-11-20 | 榆林学院 | A kind of spatial guide blade with guide face partition |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20160625 |