CN101718281A - Balanced stability centrifugal pump three-volute structure - Google Patents
Balanced stability centrifugal pump three-volute structure Download PDFInfo
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- CN101718281A CN101718281A CN200910246332A CN200910246332A CN101718281A CN 101718281 A CN101718281 A CN 101718281A CN 200910246332 A CN200910246332 A CN 200910246332A CN 200910246332 A CN200910246332 A CN 200910246332A CN 101718281 A CN101718281 A CN 101718281A
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- spiral case
- centrifugal pump
- volute
- volute structure
- balanced
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- 239000007788 liquid Substances 0.000 claims abstract description 12
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000002153 concerted effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The invention relates to a balanced stability centrifugal pump three-volute structure, comprising a first volute, a second volute and a third volute, which are distributed with 120 degrees, and outflowing paths of the three volutes lead the liquid flows to be converged to a common pump outlet. The balanced stability centrifugal pump three-volute structure has the beneficial effects that: the radial stress of the centrifugal pump is balanced and the operation is stable, so as to prolong the service life.
Description
Technical field
The present invention relates to a kind of centrifugal pump spiral casing, particularly balanced stability centrifugal pump three-volute structure.
Background technique
Centrifugal pump have performance range extensively, stability of flow, simple in structure, plurality of advantages such as running is reliable and easy to maintenance.Therefore centrifugal pump is most widely used in industrial production.Spiral case is the basic element of character of centrifugal pump, not only compiles the liquid that is thrown away by impeller, is again an energy conversion device simultaneously.Using more at present, worm frame has traditional single worm frame and more advanced double volute structure.
Single worm frame (with reference to Fig. 2) is when design discharge (flow under the best efficiency point) turns round down, act on impeller 1 ' pressure be evenly or be close to uniformly, under other flows, the pressure of impeller 1 ' on every side is uneven, thereby formed a synthetic radial reaction force, unbalanced radial force is along with flow reduces and increases from design discharge, centrifugal pump influence to big flow is bigger especially, the size of radial force is the amount of deflection of influence axle directly, thereby further influence sealing mechanism and bearing life, even can't move.
Double volute structure (with reference to Fig. 3) becomes the spiral cases of 180 degree to form by two, and the outer flow passage of first spiral case 2 " the outer flow passage and second spiral case 3 " converges to common exhaust port to two strands of liquid streams.Though each 180 degree pressure on segmental arcs are unbalanced, these two power opposite sign but equal magnitude, like this, though on axle and the bearing effect radial force is arranged also is very little, therefore this structure particularly has great importance in the centrifugal pump of flow greatly.But because this kind structure is to come balance by two anti-radial forces of opposite direction, its balance stationarity is unsatisfactory.
Summary of the invention
The present invention will solve the uneven and jiggly problem of operation of radial force that centrifugal pump exists, and provides a kind of and can make centrifugal pump radial force balance and the operation balanced stability centrifugal pump three-volute structure of brand new more stably.
Technological scheme of the present invention:
Balanced stability centrifugal pump three-volute structure, it is characterized in that: comprise first spiral case, second spiral case, the 3rd spiral case, described first spiral case, second spiral case, the 3rd spiral case become 120 ° to differ layout, and the outer flow passage of described first spiral case, second spiral case, the 3rd spiral case converges to common pump discharge jointly to liquid stream.
Be thrown out of after liquid stream is through the impeller pressurization, three spiral cases have been full of liquid stream simultaneously.Liquid stream has a radial force for first spiral case, for second spiral case and the 3rd spiral case individual radial force is arranged also equally, because three spiral cases are into 120 degree and arrange, three radial forces are zero making a concerted effort on impeller, therefore three radial forces will reach a state of equilibrium, and this balance is the balance on same plane.After the radial force of impeller reaches state of equilibrium, the operation of this centrifugal pump will be more steady, also reduce simultaneously because the uneven caused various wearing and tearing of impeller radial force.
Beneficial effect of the present invention: make centrifugal pump radial force balance and operation more steady, can increase the service life.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of single spiral case;
Fig. 3 is the structural representation of double volute;
Embodiment
With reference to Fig. 1, balanced stability centrifugal pump three-volute structure, comprise first spiral case 2, second spiral case 3, the 3rd spiral case 4, described first spiral case 2, second spiral case 3, the 3rd spiral case differ layout for 4 one-tenth 120 °, and the outer flow passage of described first spiral case 2, second spiral case 3, the 3rd spiral case 4 converges to common pump discharge jointly to liquid stream.
Be thrown out of after liquid stream is through impeller 1 pressurization, three spiral cases have been full of liquid stream simultaneously.Liquid stream has a radial force for first spiral case 2, for second spiral case 3 and the 3rd spiral case 4 individual radial force is arranged also equally, because three spiral cases are into 120 degree and arrange, three radial forces are zero making a concerted effort on impeller 1, therefore three radial forces will reach a state of equilibrium, and this balance is the balance on same plane.After the radial force of impeller 1 reaches state of equilibrium, the operation of this centrifugal pump will be more steady, also reduce simultaneously because the uneven caused various wearing and tearing of impeller radial force.
The described content of this specification embodiment only is enumerating the way of realization of inventive concept; protection scope of the present invention should not be regarded as only limiting to the concrete form that embodiment states, protection scope of the present invention also reach in those skilled in the art conceive according to the present invention the equivalent technologies means that can expect.
Claims (1)
1. balanced stability centrifugal pump three-volute structure, it is characterized in that: comprise first spiral case, second spiral case, the 3rd spiral case, described first spiral case, second spiral case, the 3rd spiral case become 120 ° to differ layout, and the outer flow passage of described first spiral case, second spiral case, the 3rd spiral case converges to common pump discharge jointly to liquid stream.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910246332A CN101718281A (en) | 2009-11-21 | 2009-11-21 | Balanced stability centrifugal pump three-volute structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910246332A CN101718281A (en) | 2009-11-21 | 2009-11-21 | Balanced stability centrifugal pump three-volute structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101718281A true CN101718281A (en) | 2010-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910246332A Pending CN101718281A (en) | 2009-11-21 | 2009-11-21 | Balanced stability centrifugal pump three-volute structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN101718281A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606533A (en) * | 2012-03-21 | 2012-07-25 | 江苏大学 | Three-diffusion-tube volute structure enabling centrifugal pump to achieve radial force balance |
| WO2012135495A1 (en) * | 2011-03-30 | 2012-10-04 | Robert Jarvik | Centrifugal blood pumps with reverse flow washout |
-
2009
- 2009-11-21 CN CN200910246332A patent/CN101718281A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012135495A1 (en) * | 2011-03-30 | 2012-10-04 | Robert Jarvik | Centrifugal blood pumps with reverse flow washout |
| US8535212B2 (en) | 2011-03-30 | 2013-09-17 | Jarvik Robert | Centrifugal blood pumps with reverse flow washout |
| CN102606533A (en) * | 2012-03-21 | 2012-07-25 | 江苏大学 | Three-diffusion-tube volute structure enabling centrifugal pump to achieve radial force balance |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100602 |