CN106704254A - Double suction centrifugal pump - Google Patents
Double suction centrifugal pump Download PDFInfo
- Publication number
- CN106704254A CN106704254A CN201710069467.5A CN201710069467A CN106704254A CN 106704254 A CN106704254 A CN 106704254A CN 201710069467 A CN201710069467 A CN 201710069467A CN 106704254 A CN106704254 A CN 106704254A
- Authority
- CN
- China
- Prior art keywords
- impeller
- centrifugal pump
- suction centrifugal
- double suction
- keyway
- 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
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
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/185—Rotors consisting of a plurality of wheels
-
- 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
- F04D29/20—Mounting rotors on shafts
-
- 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
- F04D29/2261—Rotors specially for centrifugal pumps with special measures
- F04D29/2272—Rotors specially for centrifugal pumps with special measures for influencing flow or boundary layer
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
-
- 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
- F04D1/006—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps double suction pumps
Abstract
The invention relates to the technical field of centrifugal pumps, and discloses a double suction centrifugal pump. The double suction centrifugal pump comprises a first impeller and a second impeller connected and sleeved on the same one pump shaft through keys and with the same shapes; the second impeller is provided with multiple key slots for axially extending; and the multiple key slots are respectively matched with the keys on the pump shaft to form different impeller staggering angles between the first impeller and the second impeller. According to the double suction centrifugal pump provided by the invention, multiple key slots are formed in mounting holes of one impeller; in the use process, the keys on the pump shaft are inserted in the different key slots to realize matching between the impeller and the impeller with fixed mounting position to generate different impeller staggering angles; the adjustment of the impeller staggering angles is realized; the adjusting mode is simple; the defects of high vibration and high noise of the centrifugal pump with fixed impeller staggering angles in the prior art are solved; the pressure pulsation control of the double suction centrifugal pump is convenient; and the double suction centrifugal pump is more stable in operation, reduces the wear, and prolongs the service life.
Description
Technical field
The present invention relates to pump technical field is centrifuged, more particularly to a kind of double suction centrifugal pump.
Background technology
Double suction centrifugal pump is efficient high relative to single-suction centrifugal pump, flow is big and the features such as lift higher, field irrigation,
Widely used in urban water supply, water diversion project.
The usual monoblock cast of impeller of double suction centrifugal pump of the prior art, in the process of running, inevitably produces
Pressure fluctuation.Wherein endanger it is maximum is blade passing frequency (leaf is frequently) pressure fluctuation composition, it result from rotary blade with
Stator-rotor interaction effect between static pumping chamber, and can cause noise and vibration, when serious very to outlet pipeline Systematic Communication
To initiation system resonance.
The content of the invention
(1) technical problem to be solved
It is an object of the invention to provide a kind of double suction centrifugal pump, with solution in the prior art double suction centrifugal pump running
The big defect of vibration.
(2) technical scheme
In order to solve the above-mentioned technical problem, the present invention provides a kind of double suction centrifugal pump, including is located at together by being bonded female connector
On the one pump shaft, impeller of shape identical first and the second impeller；Second impeller is provided with multiple keys for axially extending
Groove, multiple keyways coordinate to cause to be formed not between first impeller and the second impeller with the key on the pump shaft respectively
Same impeller alternate angle.
Wherein, multiple keyways position relationship circumferentially is：
First keyway position：
α1=0 °；
N-th keyway is with respect to first deviation angle of keyway：
Wherein, z is the number of blade of second impeller；λn-1It is impeller alternate angle, n is the integer more than 1.
Wherein, the λn-1In the presence of following relation：
λn-1=(n-1) × λ1；
Wherein, λn-1≤ 360 °/(2 × z), λ1>0°。
Wherein, the keyway is 4.
(3) beneficial effect
The double suction centrifugal pump that the present invention is provided, by will set multiple keyways in the mounting hole of one of impeller, uses
During, by by the different keyways of the key insertion on pump shaft, realizing that the impeller coordinates with the impeller that installation site is fixed and producing
The different impeller alternate angle of life, realizes the adjustable of impeller alternate angle, and adjustment mode is simple, solves to have in the prior art and fixes
The defect that centrifugal pump vibration is big, noise is big of impeller alternate angle, is easy to double-suction centrifugal pump pump pressure fluctuation to regulate and control so that double-suction centrifugal pump
Pump operation is more stablized, and reduces the abrasion of pump, improves service life.
Brief description of the drawings
Fig. 1 is the first impeller side view in the embodiment of the present invention；
Fig. 2 is the second impeller side view in the embodiment of the present invention；
Fig. 3 is assembling schematic diagram when impeller angle is zero in the embodiment of the present invention；
Fig. 4 is the assembling schematic diagram in the embodiment of the present invention during impeller angle non-zero；
Fig. 5 is the isometric views of Fig. 4；
In figure, the 1, first impeller；2nd, the second impeller；11st, single keyway；21st, the first keyway；22nd, the second keyway；23rd,
Key-groove.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the invention is described in further detail.Following instance
For illustrating the present invention, but it is not limited to the scope of the present invention.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Company ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can
Being to mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
Two connections of element internal.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
After interlocking there are some researches show the double-suction centrifugal pump impeller for arranging conventional symmetrical, it is possible to decrease the width of leaf frequency pressure fluctuation
Value.Contain dividing plate in the middle of such double-suction centrifugal pump impeller, and make double-suction centrifugal pump impeller both sides exit edge of blade into certain
Stagger angle, i.e. impeller alternate angle.This impeller is usually monoblock cast, stagger angle once it is determined that just can not change.But it is real
For different cornerites and the double-entry impeller of the number of blade on border, stagger angle is not consistent, on the contrary can when being simply uniformly interleaved with
There is detrimental effect.
Fig. 1 is the first impeller side view in the embodiment of the present invention；Fig. 2 is the second impeller side view in the embodiment of the present invention；
Fig. 3 is assembling schematic diagram when impeller angle is zero in the embodiment of the present invention；Fig. 4 is impeller angle non-zero in the embodiment of the present invention
When assembling schematic diagram；Fig. 5 is the isometric views of Fig. 4.
The present invention provides a kind of double suction centrifugal pump, including is set on the same pump shaft, and of the first impeller of shape identical 1
Second impeller 2, two impellers are scheduled on pump shaft by keying.Keyway is set on pump shaft, corresponding key, keyway edge are set in keyway
Pump shaft axis direction.Single keyway 11 is set on the centre bore that first impeller 1 coordinates with pump shaft, in assembling process, the first impeller 1
It is fixed with the cooperation position of pump shaft, the position of keyway is as shown in fig. 1 in the first impeller 1.Second impeller 2 coordinates with pump shaft
Position multiple keyways are set, be for example provided with 3 keyways, as shown in Figure 2.So when the second impeller 2 is assembled, by choosing
Different keyways are selected, the first impeller 1 can produce different impeller alternate angles from the second impeller 2 after assembling.First impeller 1 and second
Keyway on impeller 2 is opened up in the axial direction.
The double suction centrifugal pump that the present invention is provided, by will set multiple keyways in the mounting hole of one of impeller, uses
During, by by the different keyways of the key insertion on pump shaft, realizing that the impeller coordinates with the impeller that installation site is fixed and producing
The effect of the different impeller alternate angle of life, realizes the adjustable of impeller alternate angle, and adjustment mode is simple, solves and has in the prior art
There is the defect that centrifugal pump vibration is big, noise is big of fixed impeller alternate angle, be easy to double-suction centrifugal pump pump pressure fluctuation to regulate and control so that double
It is sucked away from heart pump operation more to stablize, reduces the abrasion of pump, improves service life.
On the basis of above-described embodiment, each keyway on the second impeller 2 position relationship circumferentially is：
First keyway position：
α1=0 °； (1)
N-th keyway is with respect to first deviation angle of keyway：
Wherein, z is the number of blade of second impeller 2；λn-1It is impeller alternate angle, n is the integer more than 1.
For example, the second impeller 2 has 6 blades in the present embodiment, then z is equal to 6, angle of any two blade in exit
As 60 °.To different impeller alternate angle λn-1Carry out assignment, such as λ in the present embodiment1Be 5 °, i.e. the second keyway 22 with it is single
When keyway 11 coordinates, the impeller alternate angle of generation is 5 °.
By so determining the position of keyway on the second impeller 2, the first impeller 1 and the second impeller 2 can be accurately controlled to assemble
The size of impeller alternate angle afterwards.
On the basis of above-described embodiment, λn-1In the presence of following relation：
λn-1=(n-1) × λ1； (3)
Wherein, λn-1≤ 360 °/(2 × z), λ1>0°。λn-1Meet the condition, be in order at the intensity and dress of the second impeller 2
Result after matching somebody with somebody considers.The number of key reduces λ as far as possible on the premise of the intensity of the second impeller 2 is ensuredn-1Value, increase key
Number, realize the possibility of more adjustment angles.
For example, it is 6 that number of blade z is taken in the present embodiment, λ is taken1Be 10 °, then λ2Be 20 °, i.e. the first keyway 21 and the second keyway
Angle between 22 is 70 °, and the angle between the keyway 21 of key-groove 23 and first is 150 °, and the impeller alternate angle after cooperation is 20 °.
When first keyway 21 coordinates with single keyway 11, installation diagram is as shown in Figure 3；When key-groove 23 coordinates with single keyway 11, dress
Figure is as shown in Figure 4 and Figure 5.Preferably, keyway is 4.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (4)
1. a kind of double suction centrifugal pump, it is characterised in that including being located on same pump shaft, shape identical by being bonded female connector
One impeller and the second impeller；Second impeller is provided with multiple keyways for axially extending, multiple keyways respectively with institute
The key stated on pump shaft coordinates with so that forming different impeller alternate angles between first impeller and the second impeller.
2. double suction centrifugal pump as claimed in claim 1, it is characterised in that multiple keyways position relationship circumferentially
For：
First keyway position：
α1=0 °；
N-th keyway is with respect to first deviation angle of keyway：
Wherein, z is the number of blade of second impeller；λn-1It is impeller alternate angle, n is the integer more than 1.
3. double suction centrifugal pump as claimed in claim 2, it is characterised in that the λn-1In the presence of following relation：
λn-1=(n-1) × λ1；
Wherein, λn-1≤ 360 °/(2 × z), λ1>0°。
4. the double suction centrifugal pump as described in claim any one of 1-3, it is characterised in that the keyway is 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710069467.5A CN106704254B (en) | 2017-02-08 | 2017-02-08 | A kind of double suction centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710069467.5A CN106704254B (en) | 2017-02-08 | 2017-02-08 | A kind of double suction centrifugal pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106704254A true CN106704254A (en) | 2017-05-24 |
| CN106704254B CN106704254B (en) | 2019-08-06 |
Family
ID=58910691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710069467.5A Active CN106704254B (en) | 2017-02-08 | 2017-02-08 | A kind of double suction centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106704254B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1671988A1 (en) * | 1989-09-13 | 1991-08-23 | Научно-исследовательский и конструкторский институт центробежных и роторных компрессоров | Centrifugal compressor impeller |
| CN201306306Y (en) * | 2008-11-07 | 2009-09-09 | 河南省西峡汽车水泵股份有限公司 | Water pump impeller with vanes on the back |
| CN201827133U (en) * | 2010-05-31 | 2011-05-11 | 张玲玲 | Impeller assembly for suction centrifugal pump |
| JP2011140917A (en) * | 2010-01-08 | 2011-07-21 | Torishima Pump Mfg Co Ltd | Double suction pump |
| CN103994097A (en) * | 2014-04-29 | 2014-08-20 | 江苏大学 | Double-suction impeller and double-suction vortex pump |
| CN104131995A (en) * | 2013-04-30 | 2014-11-05 | 吴为国 | Water pump impeller manufacturing method and water pump |
-
2017
- 2017-02-08 CN CN201710069467.5A patent/CN106704254B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1671988A1 (en) * | 1989-09-13 | 1991-08-23 | Научно-исследовательский и конструкторский институт центробежных и роторных компрессоров | Centrifugal compressor impeller |
| CN201306306Y (en) * | 2008-11-07 | 2009-09-09 | 河南省西峡汽车水泵股份有限公司 | Water pump impeller with vanes on the back |
| JP2011140917A (en) * | 2010-01-08 | 2011-07-21 | Torishima Pump Mfg Co Ltd | Double suction pump |
| CN201827133U (en) * | 2010-05-31 | 2011-05-11 | 张玲玲 | Impeller assembly for suction centrifugal pump |
| CN104131995A (en) * | 2013-04-30 | 2014-11-05 | 吴为国 | Water pump impeller manufacturing method and water pump |
| CN103994097A (en) * | 2014-04-29 | 2014-08-20 | 江苏大学 | Double-suction impeller and double-suction vortex pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106704254B (en) | 2019-08-06 |
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