CN101846081A - Horizontal radial multi-stage centrifugal pump - Google Patents
Horizontal radial multi-stage centrifugal pump Download PDFInfo
- Publication number
- CN101846081A CN101846081A CN 201010176075 CN201010176075A CN101846081A CN 101846081 A CN101846081 A CN 101846081A CN 201010176075 CN201010176075 CN 201010176075 CN 201010176075 A CN201010176075 A CN 201010176075A CN 101846081 A CN101846081 A CN 101846081A
- Authority
- CN
- China
- Prior art keywords
- impeller
- stage
- stage impeller
- stator
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000008676 import Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a horizontal radial multi-stage centrifugal pump and relates to the technical field of centrifugal pump manufacturing. The centrifugal pump comprises a pump body, a volute (1), a pump cover (5), a primary-stage impeller (3), a secondary-stage impeller (4) and a guide vane (2), wherein the primary-stage impeller (3) and the secondary-stage impeller (4) are fixed on a pump shaft (11) by key joint and rotate together with the pump shaft (11); the secondary-stage impeller (4) is arranged on the outer side of the primary-stage impeller (3) along the radial direction; and the guide vane (2) is arranged between the primary-stage impeller (3) and the secondary-stage impeller (4) along the radial direction, collects liquid discharged from the primary-stage impeller (3) and introduces the liquid into the secondary-stage impeller (4). The centrifugal pump is convenient to maintain and repair; an axial force can be balanced by using a bearing and a balancing hole on the primary-stage impeller per se without adding an axial force balancing device, so a simple structure is achieved; liquid change in speed direction is little, hydraulic loss is small and the running efficiency of the pump is high; and the two stages of impellers are arranged along the radial direction, so an axial size is small.
Description
Technical field
The invention belongs to centrifugal pump manufacturing technology field, particularly a kind of horizontal radial multi-stage centrifugal pump.
Background technique
The single-stage lift of centrifugal pump generally is no more than 150m at present, in order to make pump obtain bigger lift, usually adopt the method for axial multistage pump, be that a plurality of impellers and stator are connected vertically, after liquid enters first stage impeller by suction casing, guide functions by stator enters the next stage impeller eye again, up to the extrusion section that enters pump.The known this axial multistage pump part that comes with some shortcomings: the one, axial dimension is bigger, defines the bulk of installation; The 2nd, assembly is various, complex structure, maintenance difficult; The 3rd, because axially multistage pump has a plurality of impellers to arrange vertically, the axial force of a plurality of impellers adds up and has produced bigger axial force, according to existing design theory, for thorough balancing axial thrust need increase Balance disc device or balancing drum device, these Equilibrators are difficult design but also damage easily not only; The 4th, the guide vane structure complexity makes the flow direction of liquid constantly change, and hydraulic loss is bigger, influences the operational efficiency of pump.
By retrieval, patent application related to the present invention has: single-shaft multistage pump (publication number: CN1641224A), invented a kind of single-shaft multistage pump, characteristics are that realization is small-sized, save the space, but this invention complex structure, impeller is arranged vertically, can't reduce axial dimension to greatest extent, need the design balance device to come balancing axial thrust in addition, increase design difficulty.
The modified model multistage centrifugal pump (publication number: CN101270757A), this invention is arranged in the pump shaft left and right sides with impeller and is the center symmetric arrangement with the bearing, though like this can balancing axial thrust, still there is complex structure, the deficiency that axial dimension is big.
(publication number: CN1439808A), this characteristic feature of an invention is with pump housing separated into two parts to the multistage sectional centrifugal pump of impeller symmetric arrangement, and two-part impeller inlet direction is opposite, has saved Equilibrator.But the structure relative complex, axial dimension is big, and liquid stream flow direction changes complexity in the stator in addition, and hydraulic loss is big.
Summary of the invention
Technical problem to be solved by this invention is, the multistage pump axial dimension is big, complex structure, axial force is big and pump efficiency is low defective, propose a kind of horizontal radial multi-stage centrifugal pump, this radial multi-stage centrifugal pump axial dimension is little, simple in structure and operational efficiency is high.
Technological scheme of the present invention is: a kind of horizontal radial multi-stage centrifugal pump, comprise the basic elements of character such as first stage impeller, stator, secondary impeller, pump shaft, pump cover, sealing, bearing bracket stand, bearing, bearing (ball) cover, also comprise being used to collect secondary impeller drain, kinetic energy is converted into the spirality Crucible shell of pressure energy.
First stage impeller and secondary impeller are fixed on the pump shaft by key connecting and pump shaft rotates together, and they arrange that radially promptly secondary impeller is in the outside of first stage impeller outlet.Stator plays guide functions between both stage impellers, be fixed on spiral case inside by scyewed joint.Above-mentioned arrangement can reduce the axial dimension of the pump housing.
The blade of first stage impeller is three-dimensional twisted form, and this is in order to improve the hydraulic performance of impeller; First stage impeller number of blade Z
1Be 5～7, this be because if the number of blade very little, the diffusion of runner is big, easily produces the separation of flow, hydraulic loss is bigger; If the number of blade is too much, it is serious then to squeeze phenomenon in the impeller, and liquid stream increases with the blade area of contact, causes frictional loss to increase.Secondary impeller is a two-dimensional circle cylindricality blade, the casting processing of being convenient to simple in structure; The import of secondary impeller is at the radial outside of first stage impeller in addition, and Flow area is about 2 times of first stage impeller, and is mobile uniform and stable in order to make, so number of blade Z
2Get 2 (Z
1-1).The blade of stator is a two-dimensional circle cylindricality blade, and simple in structure so easy to process, the internal liquid velocity attitude is with low uncertainty, and hydraulic loss is little, in order to reduce the divergence loss in the stator, number of blade Z
3Get 3 (Z
1-1).
Because the first stage impeller back shroud is stressed stressed greater than front shroud, so there is the axial force of pointing to front shroud, secondary impeller, can be ignored so secondary axial force of impeller is less because the stressed of front and rear cover plate can be cancelled out each other substantially.Because have only first stage impeller to have axial force, so come the most of axial force of balance by seal ring is set with the mode of opening equalizing orifice on the first stage impeller back shroud, residual axial force is born by bearing.
Radial clearance between first stage impeller and the stator is 2～4mm.Radial clearance between secondary impeller and the stator is 2～4mm.
The exit width of first stage impeller is than the little 3～5mm of entrance width of stator, and the entrance width of secondary impeller is than the big 3～5mm of exit width of stator, and the import and export width of stator equates that the import and export width of secondary impeller equates.
The invention has the beneficial effects as follows: both stage impellers arranges that radially axial dimension is little; Simple in structure, just replaceable impeller and stator under the situation of not dismantling sealing and bearing, easy to maintenance; Have only first stage impeller that axial force is arranged, the equalizing orifice of bearing and first stage impeller self just can balancing axial thrust, does not need the device of additional designs balancing axial thrust, and design is convenient.Stator and secondary blade wheel structure are simple, and the interior liquid hydraulic loss of pump is little, pump operation efficient height.
Description of drawings
Fig. 1 is an embodiment's of an a kind of horizontal radial multi-stage centrifugal pump of the present invention structural profile schematic representation.
Fig. 2 is a chopped-off head blade wheel structure generalized section.
Fig. 3 is a chopped-off head blade wheel structure left view.
Fig. 4 is the guide vane structure generalized section.
Fig. 5 is the guide vane structure left view.
Fig. 6 is secondary blade wheel structure generalized section.
Fig. 7 is secondary blade wheel structure left view.
Among the figure: 1. spiral case, 2. stator, 3. first stage impeller, 4. time level impeller, 5. pump cover, 6. an envelope, 7. hitch, 8. bearing housing, 9. bearing, 10. bearing (ball) cover, 11. pump shafts, 12. first stage impeller front shrouds, 13. the first stage impeller back shroud, 14. first stage impeller blades, 15. equalizing orifices, 16. the stator front shroud, 17. stator back shrouds, 18. stator blades, 19. inferior level front shroud of impeller, 20. level back shroud of impeller, 21. level impeller blades.
Embodiment
In conjunction with Fig. 1, radial multi-stage centrifugal pump of the present invention comprises first stage impeller 3, the fundamental composition of general multistage centrifugal pumps such as secondary impeller 4 and stator 2, also comprise and be used to collect secondary impeller drain, liquid kinetic energy is converted into the spirality Crucible shell 1 of pressure energy, first stage impeller 3 and secondary impeller 4 are fixed on the pump shaft 11 by key connecting, rotate with pump shaft 11, secondary impeller 4 radially is arranged in the outside of first stage impeller 3, stator 2 radially is arranged in the centre of first stage impeller 3 and secondary impeller 4, the liquid that first stage impeller 3 is discharged is collected and is imported secondary impeller 4, and stator 2 is fixed on the inside of spiral case by scyewed joint.Other structures of horizontal radial multi-stage pump of the present invention repeat no more with the one-stage centrifugal pump structure was identical in the past.
In conjunction with Fig. 2, Fig. 3, embodiment's first stage impeller blade 14 is three-dimensional twisted blade, the number of blade of first stage impeller 3 is got 5, on first stage impeller back shroud 13, have equalizing orifice 15, owing to have only first stage impeller that axial force is arranged, bearing 9 and equalizing orifice 15 can balance first stage impeller self axial force, do not need additionally to increase Equilibrator.
In conjunction with Fig. 4, Fig. 5, embodiment's stator 2 is stator radially, and stator front shroud 16 is parallel to each other with stator back shroud 17, stator blade 18 adopts plain vane, and the number of blade is got 12, the casting processing of being convenient to simple in structure, can reduce the hydraulic loss of pump in addition, improve the efficient of pump.
In conjunction with Fig. 6, Fig. 7, the secondary impeller blade 21 of embodiment adopts plain vane, and the number of blade of secondary impeller 4 is got 8, and secondary front shroud of impeller 19 is parallel to each other at the secondary impeller blade of placement 21 places with secondary back shroud of impeller 20, the casting processing of being convenient to simple in structure.
Working procedure is as follows:
When the radial multi-stage pump work, pump shaft 11 drives first stage impeller 3 and secondary impeller 4 rotates synchronously, the liquid of being pumped enters first stage impeller 3 by spiral case 1 import, collected and import secondary impeller 4 by stator 2 after increasing its energy first, collected by spiral case 1 after increasing energy once more, and discharge the pump housing after kinetic energy is converted into pressure energy.
Claims (4)
1. horizontal radial multi-stage centrifugal pump, comprise spiral case (1), pump cover (5), axle envelope (6), hitch (7), bearing housing (8), bearing (9), bearing (ball) cover (10) and pump shaft (11), it is characterized in that: also comprise first stage impeller (3), secondary impeller (4), stator (2), described first stage impeller (3) and secondary impeller (4) are fixed on the pump shaft (11) by key connecting, rotate with described pump shaft (11); Described secondary impeller (4) is disposed radially the outside in first stage impeller (3), described stator (2) is disposed radially the centre at first stage impeller (3) and secondary impeller (4), described stator (2) is fixed on the inside of spiral case (1) by scyewed joint, and secondary impeller (4) is collected and imported to the liquid that described stator (2) is discharged first stage impeller (3).
2. a kind of horizontal radial multi-stage centrifugal pump according to claim 1 is characterized in that: described first stage impeller (3) is three-dimensional twisted form blade, has equalizing orifice on described first stage impeller (3) back shroud, first stage impeller number of blade Z
1Be 5～7, described stator (2) and secondary impeller (4) all are two-dimensional circle cylindricality blades, and the number of blade of described stator (2) is 3 (Z
1-1), the number of blade 2 (Z of described secondary impeller (4)
1-1).
3. a kind of horizontal radial multi-stage centrifugal pump according to claim 1, it is characterized in that: described first stage impeller (3) is 2～4mm with stator (2) radial clearance each other, and described stator (2) is 2～4mm with secondary impeller (4) radial clearance each other.
4. a kind of horizontal radial multi-stage centrifugal pump according to claim 1, it is characterized in that: the exit width of described first stage impeller (3) is than the little 3～5mm of entrance width of stator (2), and the entrance width of described secondary impeller (4) is than the big 3～5mm of exit width of stator (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101760757A CN101846081B (en) | 2010-05-18 | 2010-05-18 | Horizontal radial multi-stage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101760757A CN101846081B (en) | 2010-05-18 | 2010-05-18 | Horizontal radial multi-stage centrifugal pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101846081A true CN101846081A (en) | 2010-09-29 |
| CN101846081B CN101846081B (en) | 2012-07-04 |
Family
ID=42770838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101760757A Expired - Fee Related CN101846081B (en) | 2010-05-18 | 2010-05-18 | Horizontal radial multi-stage centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101846081B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387421A (en) * | 2017-09-05 | 2017-11-24 | 大连利欧华能泵业有限公司 | Efficient radial direction subdivision scroll casing type centrifugal multistage pump multiple centrifugal pump |
| CN110206752A (en) * | 2019-06-17 | 2019-09-06 | 天长市远安机械有限公司 | A kind of centrifugal pump for accelerating water speed out |
| CN113464443A (en) * | 2021-08-05 | 2021-10-01 | 山东大学 | Guide vane fixed two-stage supercharging centrifugal pump |
| WO2023065413A1 (en) * | 2021-10-22 | 2023-04-27 | 台州韩进泵业有限公司 | Impeller device for centrifugal pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1462592A (en) * | 1920-07-16 | 1923-07-24 | B F Sturtevant Co | Counter-rotation turboblower |
| DE706213C (en) * | 1938-09-10 | 1941-05-21 | Alessandro Tebaldi | Centrifugal compressor |
| DE1039694B (en) * | 1952-07-12 | 1958-09-25 | Dr Alfred Buechi | Radial compressor with impellers running in opposite directions |
| DE1110810B (en) * | 1956-01-19 | 1961-07-13 | Licentia Gmbh | Counter-rotating compressor or pump |
| CN2721918Y (en) * | 2004-08-06 | 2005-08-31 | 大连深蓝泵业有限公司 | Horizontal multi-stage pump |
| CN201696302U (en) * | 2010-05-18 | 2011-01-05 | 江苏大学 | Horizontal radial multi-stage centrifugal pump |
-
2010
- 2010-05-18 CN CN2010101760757A patent/CN101846081B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1462592A (en) * | 1920-07-16 | 1923-07-24 | B F Sturtevant Co | Counter-rotation turboblower |
| DE706213C (en) * | 1938-09-10 | 1941-05-21 | Alessandro Tebaldi | Centrifugal compressor |
| DE1039694B (en) * | 1952-07-12 | 1958-09-25 | Dr Alfred Buechi | Radial compressor with impellers running in opposite directions |
| DE1110810B (en) * | 1956-01-19 | 1961-07-13 | Licentia Gmbh | Counter-rotating compressor or pump |
| CN2721918Y (en) * | 2004-08-06 | 2005-08-31 | 大连深蓝泵业有限公司 | Horizontal multi-stage pump |
| CN201696302U (en) * | 2010-05-18 | 2011-01-05 | 江苏大学 | Horizontal radial multi-stage centrifugal pump |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387421A (en) * | 2017-09-05 | 2017-11-24 | 大连利欧华能泵业有限公司 | Efficient radial direction subdivision scroll casing type centrifugal multistage pump multiple centrifugal pump |
| CN110206752A (en) * | 2019-06-17 | 2019-09-06 | 天长市远安机械有限公司 | A kind of centrifugal pump for accelerating water speed out |
| CN113464443A (en) * | 2021-08-05 | 2021-10-01 | 山东大学 | Guide vane fixed two-stage supercharging centrifugal pump |
| WO2023065413A1 (en) * | 2021-10-22 | 2023-04-27 | 台州韩进泵业有限公司 | Impeller device for centrifugal pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101846081B (en) | 2012-07-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201696302U (en) | Horizontal radial multi-stage centrifugal pump | |
| CN201428625Y (en) | Single-axis multi-stage centrifugal blower | |
| CN201723460U (en) | Variable frequency high speed wet-type submersible pump | |
| CN100432443C (en) | Centrifugal pump for deep well | |
| CN101846081B (en) | Horizontal radial multi-stage centrifugal pump | |
| CN101915196A (en) | Double-runner ultra-low specific speed axial flow hydraulic turbine for driving cooling tower fan | |
| CN106438457A (en) | Half-opened impeller and low-flow super high-lift multiple-stage centrifugal pump with same | |
| CN201013667Y (en) | Chemical centrifugal pump | |
| CN101696692A (en) | Double-suction multi-stage centrifugal pump | |
| CN202417954U (en) | Nuclear secondary pump charging pump of 1000MW nuclear power station | |
| CN102828984A (en) | Axial force control method of back-to-back type two-stage centrifugal compressor | |
| CN202273867U (en) | Multi-stage partial emission pump | |
| CN101210567A (en) | Horizontal multistage stainless steel centrifugal pump | |
| CN202418010U (en) | Axial force balancing structure of multistage centrifugal pump | |
| CN215409226U (en) | Multistage pressure boost centrifugal water pump | |
| CN102003395A (en) | Multi-purpose self-balancing multistage pump for ship | |
| CN2929282Y (en) | Horizontal guide vane type multistage middle open centrifugal pump | |
| CN203796618U (en) | Horizontal self-balancing centrifugal pump with first-stage combination impeller | |
| CN209539573U (en) | A kind of efficient two stage centrifugal regeneration pump | |
| CN202157969U (en) | Multi-stage multi-outlet suspension arm type centrifugal pump | |
| CN201401338Y (en) | Horizontal multi-stage stainless steel centrifugal pump | |
| CN207246023U (en) | Efficient radial direction subdivision scroll casing type centrifugal multistage pump multiple centrifugal pump | |
| CN201836056U (en) | Multipurpose self-balanced marine multistage pump | |
| CN101936293A (en) | Double-inlet large-flow multistage centrifugal pump | |
| CN202158014U (en) | High-temperature high-inlet-pressure single stage pump hydraulic power part structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20100929 Assignee: JIANGSU AEROSPACE HYDRAULIC EQUIPMENTS Ltd. Assignor: Jiangsu University Contract record no.: 2013320000066 Denomination of invention: Horizontal radial multi-stage centrifugal pump Granted publication date: 20120704 License type: Exclusive License Record date: 20130306 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |