CN103807179A - Novel self-balancing type vertical type multistage pump - Google Patents
Novel self-balancing type vertical type multistage pump Download PDFInfo
- Publication number
- CN103807179A CN103807179A CN201210441118.9A CN201210441118A CN103807179A CN 103807179 A CN103807179 A CN 103807179A CN 201210441118 A CN201210441118 A CN 201210441118A CN 103807179 A CN103807179 A CN 103807179A
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- CN
- China
- Prior art keywords
- impeller
- stator
- impellers
- pump
- multistage pump
- 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.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000012530 fluid Substances 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Images
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
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/06—Multi-stage pumps
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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
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/041—Axial thrust balancing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a novel self-balancing type vertical type multistage pump which comprises a water inlet-outlet section, a lower bearing, a sealing body, a shaft seal, a shaft, an upper bearing and a support. The novel self-balancing type vertical type multistage pump is characterized in that an upper cylinder and a lower cylinder are arranged between the sealing body and the water inlet-outlet section, a flow guiding device is installed between the upper cylinder and the lower cylinder, upper impellers and upper guiding blades are installed on the shaft and arranged in the upper cylinder, lower guiding blades and lower impellers are installed on the shaft and arranged in the lower cylinder, middle sections are installed between the lower guiding blades and the lower impellers, and inlets of the upper impellers and the lower impellers are opposite in direction. The novel self-balancing type vertical type multistage pump is further characterized in that the number of the upper impellers, the number of the upper guiding blades, the number of the lower impellers and the number of the lower guiding blades are all two. The novel self-balancing type vertical type multistage pump has the advantages that the impellers of the pump are designed to be symmetrically arranged, the axial force is self-balanced, a traditional axial force balancing device is eliminated, the efficiency of the pump is improved, and the service life is prolonged.
Description
Technical field
The present invention relates to a kind of self-balance type MODEL VERTICAL MULTISTAGE PUMP, particularly a kind of novel self-balance type MODEL VERTICAL MULTISTAGE PUMP.
Background technique
Existing vertical multi-stage pump structure is as Fig. 1 (employing equalizing orifice), 2 (employing balancing drums), and these structures have following shortcoming: what on domestic existing vertical multi-stage pump structure, have the type of representative has DL type, GDL type, LG type and a Denmark Grandfos CR/CRN type etc.Balancing axial thrust design: DL, the design of LG type by equalizing orifice balancing axial thrust, also have other balancing axial power apparatus as Balance disc etc. by balancing drum balancing axial thrust, GDL type.No matter that balancing axial power apparatus, has leakage rate, affects the efficiency of pump, and axial thrust balancing devices all belongs to easily damaged parts, and after long-play, along with the wearing and tearing of axial thrust balancing devices, leakage rate can increase.Though CR/CRN type does not have balancing axial power apparatus, but axial force is born by motor bearings by clamping coupling.Its shortcoming is: motor bearings needs particular design, otherwise affects the working life of pump; Clamping coupling cannot regulate the error between pump shaft and motor shaft, high to processing request, and pump working life of domestic current this structure is all lower than the pump of other structures.Some pump is for balancing axial thrust, Impeller Design is had to back blade or is unshrouded impeller by Impeller Design etc.Impeller Design has back blade in pump operation process consumed power, has reduced the efficiency of pump; The normal current that unshrouded impeller is unmatched, back shroud has destroyed impeller channel, efficiency is low.
Summary of the invention
The object of the invention is to design a kind of MODEL VERTICAL MULTISTAGE PUMP with self-balanced thrust, without design balance axial force device again, improve the efficiency of pump, increase the service life.The present invention designs a kind of novel self-balance type MODEL VERTICAL MULTISTAGE PUMP, comprise water inlet-outlet segment, lower bearing, seal, shaft seal, axle, upper bearing (metal), support, it is characterized in that: between seal and water inlet-outlet segment, be provided with top cylinder and doffing, between top cylinder and doffing, fluid director is installed, in top cylinder, there are the upper impeller and the upper stator that are arranged on axle, in doffing, there are the lower stator and the lower impeller that are arranged on axle, between lower stator and lower impeller, stage casing is installed, the import of upper impeller and lower impeller is towards the opposite.It is characterized in that: upper impeller, upper stator and lower impeller, lower stator are two groups, it is characterized in that: fluid director is a disk, respectively be provided with several water intakes towards stator in double-edged inner side, water intake connection is arranged on each corresponding water outlet notch of another side edge, the upper and lower cylinder space of the corresponding stator outer side surface of water outlet notch.Advantage of the present invention is by a symmetrical arrangement the Impeller Design of pump, and automatically balancing axial force has been cancelled traditional balancing axial power apparatus, has improved the efficiency of pump, increases the service life.
Accompanying drawing explanation
The structural representation of the employing equalizing orifice that accompanying drawing 1 is prior art.
The structural representation of the employing balancing drum that accompanying drawing 2 is prior art.
Accompanying drawing 3 is structural representation of the present invention.
Accompanying drawing 4 is flow-guiding device structure generalized section of the present invention.
Fig. 5 is flow-guiding device structure schematic diagram of the present invention.
Water inlet-outlet segment 1, lower bearing 2, lower impeller 3, stage casing 4, lower stator 5, doffing 6, fluid director 7, fluid director water intake 71, fluid director water outlet notch 72, upper stator 8, upper impeller 9, top cylinder 10, seal 11, shaft seal 12, axle 13, upper bearing (metal) 14, support 15.
Below in conjunction with embodiment, the present invention is elaborated
Embodiment
Figure comprises water inlet-outlet segment, lower bearing, seal, shaft seal, axle, upper bearing (metal), support, it is characterized in that: between seal and water inlet-outlet segment, be provided with top cylinder and doffing, between top cylinder and doffing, fluid director is installed, in top cylinder, there are the upper impeller and the upper stator that are arranged on axle, in doffing, there are the lower stator and the lower impeller that are arranged on axle, between lower stator and lower impeller, stage casing is installed, the import of upper impeller and lower impeller is towards the opposite.It is characterized in that: upper impeller, upper stator and lower impeller, lower stator are two groups.It is characterized in that: fluid director is a disk, be respectively provided with several water intakes towards stator in double-edged inner side, water intake connection is arranged on each corresponding water outlet notch of another side edge, the upper and lower cylinder space of the corresponding stator outer side surface of water outlet notch.
The present invention is achieved in that self balancing MODEL VERTICAL MULTISTAGE PUMP is by the scheme that adopts upper and lower impeller to be arranged symmetrically with, automatically balancing axial force, thereby cancelled traditional balancing axial power apparatus.Pump fed sheet of a media enters water inlet-outlet segment 1 suction chamber of pump, and the lower impeller 3 of inflow flows to top cylinder 10 by lower stator 5, fluid director 7, the upper impeller 9 entering, flow to doffing 6 by upper stator 8, fluid director 7 again, flow into the pumping chamber of water inlet-outlet segment 1, finally flow out the pump housing.Improve the efficiency of pump, extended the working life of pump.
Claims (3)
1. a novel self-balance type MODEL VERTICAL MULTISTAGE PUMP, comprise water inlet-outlet segment, lower bearing, seal, shaft seal, axle, upper bearing (metal), support, it is characterized in that: between seal and water inlet-outlet segment, be provided with top cylinder and doffing, between top cylinder and doffing, fluid director is installed, in top cylinder, there are the upper impeller and the upper stator that are arranged on axle, between upper stator and upper impeller, stage casing is installed, in doffing, there are the lower stator and the lower impeller that are arranged on axle, between lower stator and lower impeller, stage casing is installed, the import of upper impeller and lower impeller is towards the opposite.
2. by a kind of novel self-balance type MODEL VERTICAL MULTISTAGE PUMP claimed in claim 1, it is characterized in that: upper impeller, upper stator and lower impeller, lower stator are two groups or more.
3. by a kind of novel self-balance type MODEL VERTICAL MULTISTAGE PUMP claimed in claim 1, it is characterized in that: fluid director is a disk, respectively be provided with several water intakes towards stator in double-edged inner side, water intake connection is arranged on each corresponding water outlet notch of another side edge, the upper and lower cylinder space of the corresponding stator outer side surface of water outlet notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210441118.9A CN103807179A (en) | 2012-11-08 | 2012-11-08 | Novel self-balancing type vertical type multistage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210441118.9A CN103807179A (en) | 2012-11-08 | 2012-11-08 | Novel self-balancing type vertical type multistage pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103807179A true CN103807179A (en) | 2014-05-21 |
Family
ID=50704444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210441118.9A Pending CN103807179A (en) | 2012-11-08 | 2012-11-08 | Novel self-balancing type vertical type multistage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103807179A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033391A (en) * | 2014-06-19 | 2014-09-10 | 长沙中联泵业有限公司 | Vertical self-balancing multistage centrifugal pump |
| EP3176441A1 (en) * | 2015-12-02 | 2017-06-07 | Grundfos Holding A/S | Multistage pump |
| CN115949596A (en) * | 2023-01-31 | 2023-04-11 | 上海凯泉泵业（集团）有限公司 | Vertical multistage pump with symmetrically-arranged impellers |
-
2012
- 2012-11-08 CN CN201210441118.9A patent/CN103807179A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033391A (en) * | 2014-06-19 | 2014-09-10 | 长沙中联泵业有限公司 | Vertical self-balancing multistage centrifugal pump |
| EP3176441A1 (en) * | 2015-12-02 | 2017-06-07 | Grundfos Holding A/S | Multistage pump |
| US10900495B2 (en) | 2015-12-02 | 2021-01-26 | Grundfos Holding A/S | Multistage pump |
| CN115949596A (en) * | 2023-01-31 | 2023-04-11 | 上海凯泉泵业（集团）有限公司 | Vertical multistage pump with symmetrically-arranged impellers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140521 |