CN105782066A - Double-suction and multi-stage centrifugal pump - Google Patents
Double-suction and multi-stage centrifugal pump Download PDFInfo
- Publication number
- CN105782066A CN105782066A CN201610220835.7A CN201610220835A CN105782066A CN 105782066 A CN105782066 A CN 105782066A CN 201610220835 A CN201610220835 A CN 201610220835A CN 105782066 A CN105782066 A CN 105782066A
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- China
- Prior art keywords
- bearing
- suction
- double
- impeller
- centrifugal pump
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
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- 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
- F04D29/2205—Conventional flow pattern
- F04D29/2211—More than one set of flow passages
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- 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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a double-suction and multi-stage centrifugal pump. The double-suction and multi-stage centrifugal pump comprises a shell structure and a rotor component arranged in the shell structure, wherein the rotor component comprises a spindle, a bearing, a bearing blocking sleeve, a shaft sleeve, a forward inducer, a forward channel impeller, an impeller lining, a reverse channel impeller, a reverse inducer, another shaft sleeve, another bearing blocking sleeve and another bearing, wherein the bearing, the bearing blocking sleeve, the shaft sleeve, the forward inducer, the forward channel impeller, the impeller lining, the reverse channel impeller, the reverse inducer, the other shaft sleeve, the other bearing blocking sleeve and the other bearing are successively arranged on the spindle; the shell structure comprises bearing bodies, first suction casings, middle sections, forward channel guide vanes, drainage sections and double-suction water inlet tubes; and each bearing body, the corresponding first suction casing, the corresponding middle section, the corresponding forward channel guide vane and the corresponding double-suction water inlet tube are successively arranged fixedly. Compared with a centrifugal pump with an existing structure, the double-suction and multi-stage centrifugal pump with the structure has the advantages of small resistance, large flow, high lift and convenience in assembly and disassembly owing to the forward inducer and the reverse inducer which have remarkable cavitation erosion resistance, pumping efficiency is high, and production and manufacturing costs are low.
Description
Technical field
The present invention relates to field of hydraulic machinery, particularly to a kind of double-suction multi-stage centrifugal pump.
Background technology
Centrifugal multistage pump multiple centrifugal pump can realize higher lift, is currently hydraulic conventional in pump industry, but, most of multistage pumps, owing to adopting single suction water inlet, easily produce cavitation, are difficulty with big flow when big flow.Conventional multistage pump is usually by balancing frame to balance its axial force, and bearing own does not undertake axial force, and pump is operationally, small change can be there is in operating mode, and make balancing frame ceaselessly contact with balance ring, wear and tear, cause equipment irregular operation, even injure the safe operation of whole equipment.Simultaneously as want balancing axial thrust, some leaked water, understand some volumetric loss, efficiency can decrease.Conventional clear water multistage pump is mono-hull, and maintenance need to dismantle inlet and outlet pipe lines, adds very big workload.
Adopted double-suction multi-stage pump at present, although big flow can be realized to be run, axial force complete equipilibrium in operation, keep in repair also without dismounting pipeline, but due to this body structure, it is difficulty with high-lift, when lift more than 180 meters, the efficiency of pump itself can reduce, and manufacture difficulty and production cost can be greatly promoted.
Therefore, how to provide a kind of flow big, high-lift and the efficient double-suction centrifugal multistage pump multiple centrifugal pump of easy accessibility, become those skilled in the art to need badly and solved the technical problem that.
Summary of the invention
Based on the deficiencies in the prior art, the problem to be solved in the present invention is how to provide a kind of flow big, high-lift and the efficient double-suction centrifugal multistage pump multiple centrifugal pump of easy accessibility.
For solving above-mentioned technical problem, the present invention provides a kind of double-suction multi-stage centrifugal pump, including shell mechanism and the rotor part being arranged in shell mechanism, described rotor part includes main shaft, and is set in turn in the bearing on described main shaft, bearing interstage sleeve, axle sleeve, positive induction wheel, positive flow passage impeller, impeller buss, anti-flow passage impeller, anti-inducer, axle sleeve, bearing interstage sleeve and bearing；Described shell mechanism includes bearing body, the first suction casing, stage casing, positive flow passage impeller, water exit end and double suction water inlet pipe, described bearing body, the first suction casing, stage casing, positive runner stator, water exit end, and double suction water inlet pipe and is fixedly installed successively.
As the improvement on the one hand of a kind of double-suction multi-stage centrifugal pump of the present invention, described double-suction multi-stage is centrifugal also includes flow passage components, described flow passage components include being arranged at the reflux road stator on the right side of described water inlet-outlet segment, anti-flow passage impeller, reflux road first stage impeller, anti-inducer, and described reflux road stator, anti-flow passage impeller, reflux road first stage impeller, anti-inducer set gradually.
As the improvement on the one hand of a kind of double-suction multi-stage centrifugal pump of the present invention, described bearing, bearing interstage sleeve, axle sleeve, positive induction wheel, positive flow passage impeller, impeller buss, anti-flow passage impeller, anti-inducer, axle sleeve, bearing interstage sleeve and bearing are fixedly installed on described main shaft by flat key.
As the improvement on the one hand of a kind of double-suction multi-stage centrifugal pump of the present invention, described double-suction multi-stage centrifugal pump also includes motor, and the output shaft of described motor is fixing with one end of described main shaft to be connected.
As the improvement on the one hand of a kind of double-suction multi-stage centrifugal pump of the present invention, described double-suction multi-stage centrifugal pump also includes and the vertically disposed water inlet of described main shaft and outlet, and described water inlet and the centrage of described outlet overlap or parallel.
The double-suction multi-stage centrifugal pump of said structure, including shell mechanism and the rotor part being arranged in shell mechanism, rotor part includes main shaft, and is set in turn in the bearing on main shaft, bearing interstage sleeve, axle sleeve, positive induction wheel, positive flow passage impeller, impeller buss, anti-flow passage impeller, anti-inducer, axle sleeve, bearing interstage sleeve and bearing；Shell mechanism includes bearing body, the first suction casing, stage casing, positive runner stator, water exit end and double suction water inlet pipe, and bearing body, the first suction casing, stage casing, positive runner stator and double suction water inlet pipe are fixedly installed successively.The double-suction multi-stage centrifugal pump of this structure, compared with the centrifugal pump of existing structure, owing to being provided with anti-, the positive induction wheel that can significantly send cavitation erosion performance, has that resistance is little, flow is big, lift is high and the advantage of easy accessibility, and pumping efficiency is high, produces and low cost of manufacture.
Accompanying drawing explanation
The accompanying drawing constituting the part of the present invention is used for providing a further understanding of the present invention, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.
Fig. 1 is the section view signal inventing a kind of double-suction multi-stage centrifugal pump.
Accompanying drawing labelling corresponding relation:
1 main shaft 2 bearing 3 bearing body
4 positive induction wheel 5 first suction casing 6 pull bars
The 7 positive runner stators of the positive positive flow passage impeller of runner first stage impeller 89
The 10 water exit end 11 reflux road anti-flow passage impellers of stator 12
13 reflux road first stage impeller 14 anti-inducer 15 second suction casing
16 axle sleeve 17 double suction water inlet pipe 18 stage casings
Detailed description of the invention
It should be noted that when not conflicting, the embodiment in the present invention and the feature in embodiment can be mutually combined.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
As shown in Figure 1, pump case structure of the present invention is: bearing body the 3, first suction casing 5, the water exit end 10 equipped with final stage stator, the stage casing 18 equipped with stator, its quantity is determined according to pressure size, wherein, first suction casing 5, bearing body 3, using the centrage of water exit end 10 as reference symmetry line, both sides are full symmetric arrangement, are fixed by 6 the first suction casings 5 of pull bar, stage casing 18, water exit end the 10, second suction casing 15.The bearing body 3 at two ends is respectively with bolt and the first suction casing 5 and the second fixing connection of suction casing 15.
Rotor part structure includes main shaft 1, bearing 2, bearing interstage sleeve, axle sleeve 16, positive induction wheel 4, positive flow passage impeller 8, impeller buss, anti-flow passage impeller 12, anti-inducer 14, axle sleeve 16, bearing interstage sleeve and bearing 2, and, main shaft 1, bearing 2, bearing interstage sleeve, axle sleeve 16, positive induction wheel 4, positive flow passage impeller 8, impeller buss, anti-flow passage impeller 12, anti-inducer 14, axle sleeve 16, bearing interstage sleeve and bearing 2 set gradually, two ends are fixed by locking nut, main shaft 1 is provided with multiple flat key, bearing 2, bearing interstage sleeve, axle sleeve 16, positive induction wheel 4, positive flow passage impeller 8, impeller buss, anti-flow passage impeller 12, anti-inducer 14, axle sleeve 16, bearing interstage sleeve and bearing 2 are arranged on main shaft 1 respectively through flat key.
Double-suction multi-stage centrifugal pump also includes motor, and the output shaft of motor is fixing with one end of main shaft 1 to be connected, and is done work by motor direct-drive rotor part.Two groups of impellers are with the full symmetric layout in midpoint of impeller buss, the performance parameter of each impeller is all identical, two groups of impeller sets are contained in above same axis, positive flow passage impeller 8 groups and anti-flow passage impeller 12 groups are parallel runnings, 8 groups of left sides at scantling plan water exit end 10 of positive flow passage impeller, and 12 groups of right sides at water exit end 10 of anti-flow passage impeller.Furthermore, it is necessary to illustrate, double-suction multi-stage centrifugal pump also includes the first suction casing 5 and the second suction casing 15 being arranged at two ends, and two bearing bodies 3 are relatively arranged on main shaft 1.
In Fig. 1, the arrow of labelling gives water (flow) direction, water flows into first suction casing 5 and second suction casing 15 on both sides from the double suction water inlet pipe 17 of double-suction multi-stage centrifugal pump, respectively enter positive flow passage impeller 8 groups and anti-flow passage impeller 12 groups, first flow into positive runner first stage impeller 7 and reflux road first stage impeller 13, it should be noted that, the pump of big flow is preposition equipped with inducer at first stage impeller, then positive runner stator 9 and reflux road stator 11 are passed through, the namely working chamber of pump, i.e. high pressure chest, enter back into next group impeller vane, by that analogy, often flow through an impeller, pressure doubles, form pressure superposition.Until the current of two groups of maximum pressures import delivery side of pump chamber, flow out through delivery side of pump after, form complete set pressure conveying flow process.
The maintenance of double-suction multi-stage centrifugal pump and maintenance:
Double-suction multi-stage centrifugal pump of the present invention is owing to have employed import and export at the two ends up and down of same part, it is distributed in both sides equipped with two groups of impellers of inducer and stage casing 18 symmetry, maintenance of equipment need not dismantle pipeline, so to the maintenance of double-suction multi-stage centrifugal pump with maintain very convenient.
All of coupling pin is first taken off when maintenance, then dismantling intermediate shaft coupling, then lay down pump shaft coupling, come loose all of turnbuckle, then dismounting reflux road water conservancy diversion group and that all parts of impeller sets, then dismantle positive runner this water conservancy diversion group and positive flow passage impeller 8 groups.And when assembling, its order is contrary with disassembly procedure.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (5)
1. a double-suction multi-stage centrifugal pump, including shell mechanism and the rotor part being arranged in shell mechanism, it is characterized in that, described rotor part includes main shaft (1), and is set in turn in the bearing (2) on described main shaft (1), bearing interstage sleeve, axle sleeve (16), positive induction wheel (4), positive flow passage impeller (8), impeller buss, anti-flow passage impeller (12), anti-inducer (14), axle sleeve (16), bearing interstage sleeve and bearing (2)；
Described shell mechanism includes bearing body (3), the first suction casing (5), stage casing (18), positive runner stator (9), water exit end (10) and double suction water inlet pipe (17), and described bearing body (3), the first suction casing (5), stage casing (18), positive runner stator (9), water exit end (10) and double suction water inlet pipe (17) are fixedly installed successively.
2. double-suction multi-stage centrifugal pump according to claim 1, it is characterized in that, described double-suction multi-stage is centrifugal also includes flow passage components, described flow passage components include being arranged at reflux road stator (11) on described water exit end (10) right side, anti-flow passage impeller (12), reflux road first stage impeller (13), anti-inducer (14), and described reflux road stator (11), anti-flow passage impeller (12), reflux road first stage impeller (13) and anti-inducer (14) set gradually.
3. double-suction multi-stage centrifugal pump according to claim 1, it is characterized in that, described bearing (2), bearing interstage sleeve, axle sleeve (16), positive induction wheel (4), positive flow passage impeller (8), impeller buss, anti-flow passage impeller (12), anti-inducer (14), axle sleeve (16), bearing interstage sleeve and bearing (2) are fixedly installed on described main shaft (1) by flat key.
4. double-suction multi-stage centrifugal pump according to claim 2, it is characterised in that described double-suction multi-stage centrifugal pump also includes motor, the output shaft of described motor is fixing with one end of described main shaft (1) to be connected.
5. double-suction multi-stage centrifugal pump according to claim 4, it is characterised in that described double-suction multi-stage centrifugal pump also includes and described main shaft (1) vertically disposed water inlet and outlet, described water inlet and the centrage of described outlet overlap or parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610220835.7A CN105782066A (en) | 2016-04-11 | 2016-04-11 | Double-suction and multi-stage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610220835.7A CN105782066A (en) | 2016-04-11 | 2016-04-11 | Double-suction and multi-stage centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105782066A true CN105782066A (en) | 2016-07-20 |
Family
ID=56395240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610220835.7A Pending CN105782066A (en) | 2016-04-11 | 2016-04-11 | Double-suction and multi-stage centrifugal pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN105782066A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218227A (en) * | 2017-08-02 | 2017-09-29 | 珠海市静润轴承科技有限公司 | A kind of double-impeller centrifugal formula water pump |
| CN109538522A (en) * | 2018-10-30 | 2019-03-29 | 浙江水利水电学院 | A kind of inducer, centrifugal wheel, the connection structure between rotor and installation method |
| CN111946622A (en) * | 2020-07-20 | 2020-11-17 | 孟飞星 | Multistage centrifugal pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3817653A (en) * | 1972-02-10 | 1974-06-18 | Hydro Jet Pumps Inc | Centrifugal pump apparatus |
| CN1609458A (en) * | 2003-10-23 | 2005-04-27 | 兰州理工大学 | Double-priming centrifugal pump |
| CN101303027A (en) * | 2008-06-30 | 2008-11-12 | 浙江水泵总厂有限公司 | Vertical type multilevel barrel bag pump |
| CN201747618U (en) * | 2010-08-20 | 2011-02-16 | 赣州水泵制造有限公司 | Dual-suction multistage centrifugal pump |
| CN102042232A (en) * | 2009-10-20 | 2011-05-04 | 山东双轮集团股份有限公司 | Anti-cavitation double-suction middle-opened centrifugal pump |
| CN205533288U (en) * | 2016-04-11 | 2016-08-31 | 郭学文 | Double -suction multi -stage centrifugal pump |
-
2016
- 2016-04-11 CN CN201610220835.7A patent/CN105782066A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3817653A (en) * | 1972-02-10 | 1974-06-18 | Hydro Jet Pumps Inc | Centrifugal pump apparatus |
| CN1609458A (en) * | 2003-10-23 | 2005-04-27 | 兰州理工大学 | Double-priming centrifugal pump |
| CN101303027A (en) * | 2008-06-30 | 2008-11-12 | 浙江水泵总厂有限公司 | Vertical type multilevel barrel bag pump |
| CN102042232A (en) * | 2009-10-20 | 2011-05-04 | 山东双轮集团股份有限公司 | Anti-cavitation double-suction middle-opened centrifugal pump |
| CN201747618U (en) * | 2010-08-20 | 2011-02-16 | 赣州水泵制造有限公司 | Dual-suction multistage centrifugal pump |
| CN205533288U (en) * | 2016-04-11 | 2016-08-31 | 郭学文 | Double -suction multi -stage centrifugal pump |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218227A (en) * | 2017-08-02 | 2017-09-29 | 珠海市静润轴承科技有限公司 | A kind of double-impeller centrifugal formula water pump |
| CN109538522A (en) * | 2018-10-30 | 2019-03-29 | 浙江水利水电学院 | A kind of inducer, centrifugal wheel, the connection structure between rotor and installation method |
| CN109538522B (en) * | 2018-10-30 | 2020-05-12 | 浙江水利水电学院 | Connecting structure and mounting method for inducer, centrifugal wheel and rotor |
| CN111946622A (en) * | 2020-07-20 | 2020-11-17 | 孟飞星 | Multistage centrifugal pump |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160720 |
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| RJ01 | Rejection of invention patent application after publication |