CN102606533A - Three-diffusion-tube volute structure enabling centrifugal pump to achieve radial force balance - Google Patents
Three-diffusion-tube volute structure enabling centrifugal pump to achieve radial force balance Download PDFInfo
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- CN102606533A CN102606533A CN2012100755040A CN201210075504A CN102606533A CN 102606533 A CN102606533 A CN 102606533A CN 2012100755040 A CN2012100755040 A CN 2012100755040A CN 201210075504 A CN201210075504 A CN 201210075504A CN 102606533 A CN102606533 A CN 102606533A
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- tube
- diffusing tube
- diffusing
- radial force
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Abstract
The invention discloses a three-diffusion-tube volute structure enabling a centrifugal pump to achieve radial force balance, which comprises a diffusion tube (2), a diffusion tube (3) and a diffusion tube (4), wherein the diffusion tube (2), the diffusion tube (3) and the diffusion tube (4) are arranged in a mode that every two diffusion tubes form an angle of 120 degrees. Three volute outlets enable liquid to be transmitted to a common pump outlet through pipelines. The three-diffusion-tube volute structure enabling the centrifugal pump to achieve the radial force balance has the advantages of enabling the centrifugal pump to achieve the radial force balance and operate stably and being capable of transmitting the liquid to a plurality of outlets.
Description
Technical field
The present invention relates to a kind of centrifugal pump spiral casing structure, particularly make three diffusing tube spiral cases of centrifugal pump radial force balance.
Background technique
As important energy conversion device and conveying equipment for fluid substances, centrifugal pump is applied in the every field of national economy widely.Traditional centrifugal pump worm frame is as shown in Figure 1, is single cut water list volute chamber.Under design discharge, the pressure around the impeller is uniformly, and the pressure right and wrong under non-design discharge around the impeller are equally distributed, thereby must form a time dependent radial force of big or small direction on the impeller.The centrifugal pump internal flow is complicated three-dimensional non-steady turbulent flow; Often influence the phenomenon of centrifugal pump stable operation characteristic with flow separation, cavitation, hydraulic vibration etc.; And these wild effects usually cause the generation of centrifugal pump radial force; Jiggly radial force can cause scratching of axle, and then causes the vibration of pump and influence sealing mechanism and the life-span of bearing.There are two cut waters of 180 ° of being separated by at two volute chamber worm frames shown in Figure 2; Can produce the opposite radial force of both direction; Can well balance in theory; But because the size and Orientation of radial force all changes in time, and that the segmental arc of two cut waters is not easy to make is just the same, therefore can not reach complete equilibrium with the opposite radial force of both direction.Shown in Figure 3 arranges that in impeller is followed the runner between the spiral case a plurality of stators come the method for balance radial force can reduce radial force greatly, but receives the restriction of diffusing tube, has increased the manufacturing installation cost, has also strengthened the radial dimension of spiral case.
Through retrieval, the worm frame about making centrifugal pump radial force balance that this paper adopts does not have relevant report.
Summary of the invention
The objective of the invention is to solve the stressed imbalance problem of centrifugal pump running middle period wheel radial, thereby reduce the vibration of centrifugal pump flow-induction, make its operation more steady, increase the service life.
The technical solution adopted for the present invention to solve the technical problems is: comprise being 120 ° of first diffusing tube, second diffusing tube, the 3rd diffusing tubes that differ layout, the mode that becomes a plurality of cut waters in the spiral case is 3 diffusing tubes.The effect of first diffusing tube, second diffusing tube, the 3rd diffusing tube is to collect the liquid that from impeller, flows out, and is transported to exhaust port.It is to make the same that three cut waters make that a traditional spiral case diffusing tube is become three purpose, thereby the radial force size of its generation too.Simultaneously, compare with the scheme of a plurality of cut waters in the spiral case diffusing tube, the present invention has dwindled the radial dimension of spiral case greatly.The diffusing tube number is three and to be 120 ° of purposes that differ layout be to make that radially equilibrium of forces is more stable, and it is zero that three radial forces of generation are made a concerted effort.When flow gets into spiral case after the impeller pressurization; Three spiral case while fulls of liquid; Because the characteristic of first diffusing tube, second diffusing tube, the 3rd diffusing tube is just the same, so acting on, flow produces three equal-sized radial forces on three cut waters, because three radial forces are 120 ° and differ layout; So it is zero that three radial forces are made a concerted effort in a plane, and reaches a state of equilibrium.With respect to two radial forces that size is in the opposite direction, three equilibrium of forces are more stable.
The described worm frame of this specification is not limited only to 3 volute chambers, and the thought of using a plurality of diffusing tubes of this even distribution to make the radial force of generation in a plane, reach balance all can.
Working procedure is: fluid is pressurized throwing away after impeller inlet gets into impeller; Get into first diffusing tube, second diffusing tube, the 3rd diffusing tube; Outlet connection different outlets pipe through first diffusing tube, second diffusing tube, the 3rd diffusing tube is transported to different pump discharges respectively, or pools together by a delivery side of pump output.
The invention has the advantages that: make centrifugal pump radial force balance, operate steadily, increase working life; Structure is not limited by runner, and easy processing is convenient; Do not increase the radial dimension of spiral case, more convenient in the application of multistage pump; Can carry liquid to different outlets by a pump.
Description of drawings
Fig. 1: traditional single cut water worm frame schematic representation.
Fig. 2: two cut water worm frame schematic representation.
Fig. 3: add the guide vane with spiral case structural representation.
Fig. 4: the worm frame figure that the present invention adopts.
The A view of Fig. 5: Fig. 4.
Among the figure, 1, impeller; 2, the first diffusing tubes; 3, the second diffusing tubes; 4, the three diffusing tubes.
Embodiment
In Fig. 4, make the worm frame of centrifugal pump radial force balance, comprise diffusing tube (2), diffusing tube (3), diffusing tube (4), three spiral cases are 120 ° and differ layout.Flow is transported to different pump discharges through the outlet of diffusing tube (2), diffusing tube (3), diffusing tube (4), or pools together by a delivery side of pump output.
When flow gets into impeller through impeller (1) import, after pressurizeing, throw away the entering spiral case, diffusing tube (2), diffusing tube (3), diffusing tube (4) have been full of flow simultaneously.Flow all has radial force to three spiral cases, but differs layout owing to be 120 °, and three radial forces reach balance at grade.
Claims (2)
1. three diffusing tube worm frames that make centrifugal pump radial force balance, it is characterized in that: a multiple diffusing tube of 3 is set, and said diffusing tube shape and structure is identical, evenly arranges along the axle center of impeller (1); Comprise and be 120 ° of diffusing tube (2), diffusing tube (3), diffusing tubes (4) that differ layout; Three diffusing tube outlets are arrived different pump discharges with liquid through line transportation, or pool together by a delivery side of pump output.
2. a kind of three diffusing tube worm frames that make centrifugal pump radial force balance according to claim 1; It is characterized in that: 3 diffusing tubes are set; Be 120 ° of first diffusing tube (2), second diffusing tube (3) and the 3rd diffusing tubes (4) that differ layout, said first diffusing tube (2), second diffusing tube (3) are identical with the shape and structure of the 3rd diffusing tube (4); Three spiral case runner exits arrive different pump discharges with liquid through line transportation, or pool together by a delivery side of pump output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100755040A CN102606533A (en) | 2012-03-21 | 2012-03-21 | Three-diffusion-tube volute structure enabling centrifugal pump to achieve radial force balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100755040A CN102606533A (en) | 2012-03-21 | 2012-03-21 | Three-diffusion-tube volute structure enabling centrifugal pump to achieve radial force balance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102606533A true CN102606533A (en) | 2012-07-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100755040A Pending CN102606533A (en) | 2012-03-21 | 2012-03-21 | Three-diffusion-tube volute structure enabling centrifugal pump to achieve radial force balance |
Country Status (1)
| Country | Link |
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| CN (1) | CN102606533A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016404A (en) * | 2012-12-06 | 2013-04-03 | 大耐泵业有限公司 | Symmetric double-outlet vortex chamber pump body of vertical single-stage single-suction submerged centrifugal pump |
| CN104131998A (en) * | 2014-07-23 | 2014-11-05 | 中联重科股份有限公司 | Fan and sweeping machine |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3656861A (en) * | 1970-04-15 | 1972-04-18 | Wilfley & Sons Inc A | Centrifugal pump with mating case plate volute halves and constant section impeller |
| US4893986A (en) * | 1979-10-29 | 1990-01-16 | Rockwell International Corporation | High-pressure high-temperature coal slurry centrifugal pump and let-down turbine |
| JPH11166499A (en) * | 1997-12-03 | 1999-06-22 | Torishima Pump Mfg Co Ltd | Centrifugal pump |
| GB2416003A (en) * | 2004-07-08 | 2006-01-11 | Weir Pumps Ltd | Double volute casing for a centrifugal pump |
| CN2806844Y (en) * | 2005-07-07 | 2006-08-16 | 上海东方泵业(集团)有限公司 | Double-casing volute pump |
| CN1952408A (en) * | 2005-10-20 | 2007-04-25 | 宣伯民 | Centrifugal blower having volute chamber with subchannel |
| CN101718281A (en) * | 2009-11-21 | 2010-06-02 | 浙江工业大学 | Balanced stability centrifugal pump three-volute structure |
| CN202991653U (en) * | 2012-03-21 | 2013-06-12 | 江苏大学 | Tri-diffusion tube spiral case structure balancing the radial bearing force on centrifugal pump |
-
2012
- 2012-03-21 CN CN2012100755040A patent/CN102606533A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3656861A (en) * | 1970-04-15 | 1972-04-18 | Wilfley & Sons Inc A | Centrifugal pump with mating case plate volute halves and constant section impeller |
| US4893986A (en) * | 1979-10-29 | 1990-01-16 | Rockwell International Corporation | High-pressure high-temperature coal slurry centrifugal pump and let-down turbine |
| JPH11166499A (en) * | 1997-12-03 | 1999-06-22 | Torishima Pump Mfg Co Ltd | Centrifugal pump |
| GB2416003A (en) * | 2004-07-08 | 2006-01-11 | Weir Pumps Ltd | Double volute casing for a centrifugal pump |
| CN2806844Y (en) * | 2005-07-07 | 2006-08-16 | 上海东方泵业(集团)有限公司 | Double-casing volute pump |
| CN1952408A (en) * | 2005-10-20 | 2007-04-25 | 宣伯民 | Centrifugal blower having volute chamber with subchannel |
| CN101718281A (en) * | 2009-11-21 | 2010-06-02 | 浙江工业大学 | Balanced stability centrifugal pump three-volute structure |
| CN202991653U (en) * | 2012-03-21 | 2013-06-12 | 江苏大学 | Tri-diffusion tube spiral case structure balancing the radial bearing force on centrifugal pump |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016404A (en) * | 2012-12-06 | 2013-04-03 | 大耐泵业有限公司 | Symmetric double-outlet vortex chamber pump body of vertical single-stage single-suction submerged centrifugal pump |
| CN103016404B (en) * | 2012-12-06 | 2015-12-23 | 大耐泵业有限公司 | The vertical single stage single suction submerged centrifugal pump symmetric double symmetric double-outlet vortex chamber pump housing |
| CN104131998A (en) * | 2014-07-23 | 2014-11-05 | 中联重科股份有限公司 | Fan and sweeping machine |
| CN104131998B (en) * | 2014-07-23 | 2016-08-31 | 中联重科股份有限公司 | Blower fan and sweeping machine |
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Application publication date: 20120725 |