CN208380956U - A kind of first-stage double suction impeller of centrifugal multistage pump multiple centrifugal pump - Google Patents
A kind of first-stage double suction impeller of centrifugal multistage pump multiple centrifugal pump Download PDFInfo
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- CN208380956U CN208380956U CN201821033187.5U CN201821033187U CN208380956U CN 208380956 U CN208380956 U CN 208380956U CN 201821033187 U CN201821033187 U CN 201821033187U CN 208380956 U CN208380956 U CN 208380956U
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- 238000010276 construction Methods 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 claims abstract description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
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Abstract
The utility model proposes a kind of first-stage double suction impellers of centrifugal multistage pump multiple centrifugal pump, are arranged in symmetrical structure comprising blade and impeller hub, the middle part of the impeller hub are protrusion construction, and fluid channel is divided into symmetrically two runners in left and right；The end face diameter of the impeller hub and the design proportion of impeller outlet diameter are 0.3-0.35；The design proportion of the impeller inlet diameter and impeller outlet diameter is 0.48-0.52；The design grade angle α of the blade is 80-85 °；And the inlet angle of the blade is 40-42 °, the angle of outlet is 29-32 °.The first-stage double suction impeller of the centrifugal multistage pump multiple centrifugal pump of the utility model, wheel hub is designed as middle part bulge-structure, the design proportion of double-entry impeller each section carries out strict control, on the one hand the flow rate of liquid for reducing impeller inlet avoids the Cavitation Problems in multistage pump operational process, simultaneously, keep liquid energy exchange more smooth, improves the working efficiency of multistage pump, extend the service life of multistage pump.
Description
Technical field
The utility model relates to Centrifugal Pump Design and manufacturing technology fields, more particularly to a kind of first-stage double-absorption of multistage pump
Impeller.
Background technique
Multistage pump can be used for many industrial circles such as petroleum, mine, light industry, chemical industry, medicine, food processing, to carry out
Heat supply water supply, sea water desalination, chemical industry charging, agricultural irrigation etc..The revolving speed of multistage pump is generally relatively high, due to first stage impeller import
It is provided with and reduces area of passage through axis, the flow rate of liquid that will lead to impeller inlet increases, therefore, in multistage pump operational process
In the problem of frequently encountering cavitation.And when Cavitation Problems than it is more serious when, the liquid energy exchange in first stage impeller will be bright
Aobvious influence and destruction, the flow of multistage pump, lift, efficiency have significant sudden drop phenomenon；In the case where more deteriorating, work as sky
When change problem especially severe, effective area of passage of liquid stream can be substantially reduced, and liquid stream is caused to stop, and multistage pump cannot normal work
Make.Therefore, Cavitation Problems are to cause that multistage pump service life is short, the frequent main problem of maintenance.
Utility model content
For above-mentioned problems of the prior art, the utility model provides a kind of first-stage double-absorption leaf of centrifugal multistage pump multiple centrifugal pump
Wheel, can significantly improve Cavitation Problems, improve the working efficiency of multistage pump, improve the operation stability of pump and extend pump
Service life.
To reach the purpose of this utility model, the first-stage double suction impeller of the centrifugal multistage pump multiple centrifugal pump of the utility model is in symmetrical junction
Structure setting comprising blade and impeller hub, the middle part of the impeller hub are protrusion construction, and fluid channel is divided into symmetrically
The runner of left and right two；The end face diameter of the impeller hub and the design proportion of impeller outlet diameter are 0.3-0.35；It is described
Impeller inlet diameter and impeller outlet diameter design proportion be 0.48-0.52；The middle part lug boss top of the wheel hub
Diameter and the design proportion of impeller outlet diameter be 0.55-0.60, the exit caliber of the impeller and single-side inlet bore
Design proportion be 0.9-0.98, the design proportion of the wheel hub internal diameter and impeller outlet diameter is 0.27-0.30；Described
The design grade angle α of blade is 80-85 °；And the inlet angle of the blade is 40-42 °, the angle of outlet is 29-32 °.
Preferably, the middle part of the impeller hub is the hollow structure of indent, and diameter and the impeller on indent top go out
The design proportion of mouth diameter is 0.4-0.45.
Further preferably, the height of the shoulder of the first-stage double suction impeller two sides and the design proportion of impeller whole height are
0.2-0.23。
The utility model has the beneficial effects that the first-stage double suction impeller of the centrifugal multistage pump multiple centrifugal pump, wheel hub is designed as middle part
Bulge-structure, and strict control is carried out to the design proportion of double-entry impeller each section, on the one hand reduce the liquid flow of impeller inlet
Speed avoids the Cavitation Problems in multistage pump operational process, meanwhile, keep liquid energy exchange more smooth, improves the work effect of multistage pump
Rate extends the service life of multistage pump.
Detailed description of the invention
Fig. 1 is a kind of half-sectional structural representation of the first-stage double suction impeller of centrifugal multistage pump multiple centrifugal pump of an embodiment of the present invention
Figure；
Fig. 2 be Fig. 1 X to structural schematic diagram.
Specific embodiment
To make to have further understanding to the purpose of this utility model, construction, feature and its function, hereby cooperate embodiment
Detailed description are as follows.
A kind of half-sectional knot of the first-stage double suction impeller of the centrifugal multistage pump multiple centrifugal pump of an embodiment of the present invention shown in referring to Fig.1
Structure schematic diagram, the first-stage double suction impeller are arranged in symmetrical structure comprising blade 10 and impeller hub 20, the impeller
The middle part of wheel hub 20 is protrusion construction, and fluid channel is divided into symmetrically two runners in left and right；The end face of the impeller hub 20
The design proportion of diameter d3 and impeller outlet diameter D0 is 0.3-0.35；The impeller inlet diameter D2 and impeller outlet diameter
The design proportion of D0 is 0.48-0.52；And the diameter d1 on the middle part lug boss top of the wheel hub 20 and impeller outlet diameter
The design proportion of D0 is 0.55-0.60, and the exit caliber H1 and the design proportion of single-side inlet bore H3 of the impeller are
The design proportion of 0.9-0.98, the wheel hub internal diameter d0 and impeller outlet diameter D0 are 0.27-0.30；The blade is set
Counting angle of gradient α is 80-85 °；Referring to Fig. 2, the angle of the inlet angle β 1 of the blade 10 is 40-42 °, the angle of outlet of blade 10
The angle of β 2 is 29-32 °.
In a preferred embodiment, the middle part of the impeller hub 20 is the hollow structure of indent, interior concave crown
The design proportion of the diameter d2 and impeller outlet diameter D0 at end are 0.4-0.45.
In another preferred embodiment, the height H2 of the shoulder 12 of the first-stage double suction impeller two sides and impeller are whole
The design proportion of body height H is 0.2-0.23.
The first-stage double suction impeller of the centrifugal multistage pump multiple centrifugal pump of the utility model, wheel hub are designed as middle part bulge-structure, and to double suction
The design proportion of impeller each section carries out strict control, and the flow rate of liquid on the one hand reducing impeller inlet avoids multistage pump operation mistake
Cavitation Problems in journey, meanwhile, keep liquid energy exchange more smooth, improves the working efficiency of multistage pump, extend making for multistage pump
Use the service life.
The utility model is described by above-mentioned related embodiment, however above-described embodiment is only to implement the utility model
Example.It must be noted that the embodiment disclosed is not limiting as the scope of the utility model.On the contrary, not departing from this
It is changed and retouched made by the spirit and scope of utility model, belongs to the scope of patent protection of the utility model.
Claims (3)
1. a kind of first-stage double suction impeller of centrifugal multistage pump multiple centrifugal pump, which is characterized in that the first-stage double suction impeller is set in symmetrical structure
It sets comprising blade and impeller hub, the middle part of the impeller hub are protrusion construction, and fluid channel is divided into a symmetrical left side
Right two runners；The end face diameter of the impeller hub and the design proportion of impeller outlet diameter are 0.3-0.35；The leaf
The design proportion for taking turns inlet diameter and impeller outlet diameter is 0.48-0.52；The middle part lug boss top of the wheel hub it is straight
The design proportion of diameter and impeller outlet diameter is 0.55-0.60, the exit caliber of the impeller and setting for single-side inlet bore
Meter ratio is 0.9-0.98, and the design proportion of the wheel hub internal diameter and impeller outlet diameter is 0.27-0.30；The blade
Design grade angle α be 80-85 °；And the inlet angle of the blade is 40-42 °, the angle of outlet is 29-32 °.
2. a kind of first-stage double suction impeller of centrifugal multistage pump multiple centrifugal pump as described in claim 1, which is characterized in that the impeller hub
Middle part be indent hollow structure, the design proportion of the diameter on indent top and impeller outlet diameter is 0.4-0.45.
3. a kind of first-stage double suction impeller of centrifugal multistage pump multiple centrifugal pump as described in claim 1, which is characterized in that the first-stage double-absorption
The height of the shoulder of impeller two sides and the design proportion of impeller whole height are 0.2-0.23.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821033187.5U CN208380956U (en) | 2018-07-02 | 2018-07-02 | A kind of first-stage double suction impeller of centrifugal multistage pump multiple centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821033187.5U CN208380956U (en) | 2018-07-02 | 2018-07-02 | A kind of first-stage double suction impeller of centrifugal multistage pump multiple centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208380956U true CN208380956U (en) | 2019-01-15 |
Family
ID=64965485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821033187.5U Expired - Fee Related CN208380956U (en) | 2018-07-02 | 2018-07-02 | A kind of first-stage double suction impeller of centrifugal multistage pump multiple centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208380956U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410369A (en) * | 2019-08-13 | 2019-11-05 | 浙江理工大学 | The double-suction pump impeller device and method of anti-cavitation circumferential adjustable angle |
-
2018
- 2018-07-02 CN CN201821033187.5U patent/CN208380956U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410369A (en) * | 2019-08-13 | 2019-11-05 | 浙江理工大学 | The double-suction pump impeller device and method of anti-cavitation circumferential adjustable angle |
| CN110410369B (en) * | 2019-08-13 | 2024-04-05 | 浙江理工大学 | Cavitation-preventing double-suction pump impeller device with adjustable circumferential angle and method |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190115 |