CN101846081B - Horizontal radial multi-stage centrifugal pump - Google Patents
Horizontal radial multi-stage centrifugal pump Download PDFInfo
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- CN101846081B CN101846081B CN2010101760757A CN201010176075A CN101846081B CN 101846081 B CN101846081 B CN 101846081B CN 2010101760757 A CN2010101760757 A CN 2010101760757A CN 201010176075 A CN201010176075 A CN 201010176075A CN 101846081 B CN101846081 B CN 101846081B
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- 239000007788 liquid Substances 0.000 claims abstract description 10
- 230000008878 coupling Effects 0.000 claims 2
- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
- 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
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Abstract
一种卧式径向多级离心泵，涉及离心泵制造技术领域。包括泵体、蜗壳(1)、泵盖(5)、、首级叶轮(3)、次级叶轮(4)、导叶(2)，首级叶轮(3)和次级叶轮(4)通过键联接固定在泵轴(11)上，与所述泵轴(11)一起转动；次级叶轮(4)沿径向布置在首级叶轮(3)的外侧，导叶(2)沿径向布置在首级叶轮(3)和次级叶轮(4)的中间，导叶(2)将首级叶轮(3)排出的液体收集并导入次级叶轮(4)。本发明维修方便；轴承和首级叶轮自身的平衡孔便可以平衡轴向力，不需增加轴向力平衡装置，结构简单；液体速度方向变化少，水力损失小，泵的运行效率高；两级叶轮沿径向布置，轴向尺寸小。
A horizontal radial multistage centrifugal pump relates to the technical field of centrifugal pump manufacturing. Including pump body, volute (1), pump cover (5), primary impeller (3), secondary impeller (4), guide vane (2), primary impeller (3) and secondary impeller (4) It is fixed on the pump shaft (11) through a key connection, and rotates together with the pump shaft (11); the secondary impeller (4) is arranged radially outside the primary impeller (3), and the guide vane (2) is radially arranged Arranged in the middle of the primary impeller (3) and the secondary impeller (4), the guide vane (2) collects the liquid discharged from the primary impeller (3) and guides it into the secondary impeller (4). The invention is easy to maintain; the balance hole of the bearing and the first-stage impeller can balance the axial force without adding an axial force balance device, and the structure is simple; the change of the liquid velocity direction is small, the hydraulic loss is small, and the operating efficiency of the pump is high; The stage impellers are arranged radially, and the axial dimension 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, promptly a plurality of impellers and stator are connected vertically, after liquid gets into first stage impeller through suction casing; Guide functions through stator gets into the next stage impeller eye again, up to the extrusion section that gets into 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, guide vane structure is complicated, makes the flow direction of liquid constantly change, and hydraulic loss is bigger, influences the operational efficiency of pump.
Through retrieval, the patent application relevant with 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 should invent 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 is in the opposite direction, has saved Equilibrator.But the structure relative complex, axial dimension is big, and the flow flow direction changes complicacy 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 through 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 through 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,, be prone to produce the separation of flow that hydraulic loss is bigger if this is that the diffusion of runner is big because of the number of blade very little; If the number of blade is too much, it is serious then to squeeze phenomenon in the impeller, and flow and blade area of contact increase, and 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 basically.Because have only first stage impeller to have axial force, so come the most of axial force of balance through 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, easy design.Stator and secondary blade wheel structure are simple, and the interior liquid hydraulic loss of pump is little, and pump operation efficient is high.
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. the first stage impeller front shroud, 13. first stage impeller back shrouds, 14. first stage impeller blades, 15. equalizing orifices, 16. stator front shrouds; 17. the stator back shroud, 18. stator blades, 19. 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 the fundamental composition of general multistage centrifugal pump such as first stage impeller 3, secondary impeller 4 and stator 2, also comprises being used to collect secondary impeller drain, liquid kinetic energy is converted into the spirality Crucible shell 1 of pressure energy; First stage impeller 3 is fixed on the pump shaft 11 through key connecting with secondary impeller 4; Rotate with pump shaft 11, secondary impeller 4 radially is arranged in the outside of first stage impeller 3, and 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 through scyewed joint.Other structures of horizontal radial multi-stage pump according to the 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, has 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 extra 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 following:
When the radial multi-stage pump work; Pump shaft 11 drives first stage impeller 3 and rotates synchronously with secondary impeller 4; The liquid of being pumped gets into first stage impeller 3 through spiral case 1 import; Increase first and collected by stator 2 behind its energy and import secondary impeller 4, collected by spiral case 1 after increasing energy once more, and discharge the pump housing after kinetic energy is converted into pressure energy.
Claims (3)
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 CN101846081A (en) | 2010-09-29 |
| CN101846081B true CN101846081B (en) | 2012-07-04 |
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ID=42770838
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| 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 |
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Families Citing this family (5)
| 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 |
| CN110630507B (en) * | 2019-08-14 | 2025-01-14 | 湖南自平衡多级泵制造有限公司 | A double-suction fully symmetrical multistage pump |
| CN113464443B (en) * | 2021-08-05 | 2024-06-18 | 山东大学 | Guide vane fixed two-stage booster centrifugal pump |
| CN216199212U (en) * | 2021-10-22 | 2022-04-05 | 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 | A horizontal radial multistage 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 | A horizontal radial multistage centrifugal pump |
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| CN101846081A (en) | 2010-09-29 |
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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 |
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