CN203948338U - High-power shield electric machine core main pump high-efficiency hydraulic model under a kind of multi-source constraint - Google Patents
High-power shield electric machine core main pump high-efficiency hydraulic model under a kind of multi-source constraint Download PDFInfo
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- CN203948338U CN203948338U CN201320710516.6U CN201320710516U CN203948338U CN 203948338 U CN203948338 U CN 203948338U CN 201320710516 U CN201320710516 U CN 201320710516U CN 203948338 U CN203948338 U CN 203948338U
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Abstract
The utility model relates to vane pump technical field, discloses the high-power shield electric machine core main pump high-efficiency hydraulic model under a kind of multi-source constraint, comprising: impeller and the stator matching with it; Impeller consists of six moving vanes, and impeller water inlet limit is strong rear bending, and the blade profile of impeller is for becoming cornerite three dimensional space meander configuration; Stator consists of 15 stator blades, and stator is the bending type that spatial combines with radial.Hydraulic model of the present utility model is comprised of impeller and the stator that matches with it, has increased impeller mode pitch diameter number and has avoided occurring low pitch diameter resonance, has reduced sound interference effect; Impeller water inlet limit is strong rear bending, has increased conveyance capacity and has taken into account good cavitation performance simultaneously, and the blade profile of impeller, for becoming cornerite three dimensional space meander configuration, has been improved flowing state, obtains high efficiency and reduces power; The bending type stator that adopts spatial to combine with radial, has increased flow conductivity, mates with uniform section torispherical pumping chamber, reduces flow losses and has improved whole efficiency.
Description
Technical field
The utility model relates to vane pump technical field, particularly the high-power shield electric machine core main pump high-efficiency hydraulic model under a kind of multi-source constraint.
Background technique
Core main pump is that nuclear power station reacts the main pressure-bearing boundary in unique loop, is also unique rotating equipment, has the title of nuclear power station " heart ".Wherein, core main pump flow passage components are and the most significant parts of High Temperature High Pressure freezing mixture interaction, are the power resources that maintain the uninterrupted circulation of freezing mixture; Its performance not only has conclusive impact to core main pump overall performance, and the design of core main pump miscellaneous part is also played to vital effect; The macrocyclic safe operation of core main pump, high stability and long lifetime are all closely bound up with the performance of flow passage components.
CAP1400 is the large-scale shield electric machine core main pump of China's independent research, and the coolant flow that its requirement provides is higher than introducing at present the design objective of the world's state-of-the-art AP1000 shield electric machine main pump.The constraint conditio that has many harshnesses, as: restriction pumping chamber size and structural type, under specific uniform section torispherical pumping chamber restriction, not only to provide more flow but also will reduce power of motor and export, require under design conditions, to there is high-efficiency hydraulic performance etc.
Therefore, the high-power shield electric machine core main pump high-efficiency hydraulic model under the constraint of a kind of multi-source urgently.
Summary of the invention
The purpose of this utility model is: in order to solve above-mentioned high-power shield electric machine main pump hydraulic design problem, high-power shield electric machine core main pump high-efficiency hydraulic model under a kind of multi-source constraint is provided, under structural type and size restriction, there is high efficiency, large flow, lower powered hydraulic performance.
For achieving the above object, the technical solution adopted in the utility model is: the high-power shield electric machine core main pump high-efficiency hydraulic model under a kind of multi-source constraint is provided, described hydraulic model is applicable to have the CAP1400 shield electric machine main pump of high efficiency, large flow, low power requirements under the spherical pumping chamber of uniform section of structural type and size restriction, further comprises: impeller 1 and the stator 2 matching with it; Described impeller 1 consists of six moving vanes, and impeller water inlet limit 5 is strong rear bending, and the blade profile of impeller is for becoming cornerite three dimensional space meander configuration; Described stator 2 consists of 15 stator blades, and the blade of stator 2 is the bending type that spatial combines with radial.
Wherein: six moving vanes of described impeller 1 and 15 stator blades of stator 2 match.
Wherein: the back shroud side 6 on described impeller water inlet limit 5 is strong rear bending, back shroud side 6 cornerites are greater than front shroud side 7 cornerites 40 degree.
Wherein: described stator water inlet limit 3 is distortion spatial, and stator outlet edge 4 is crooked radial, and both combine into bending type, and the average cornerite of blade is 35 degree, and stator water inlet limit 3 is all parallel with axis 9 with stator outlet edge 4.
The beneficial effects of the utility model are: hydraulic model of the present utility model is comprised of impeller and the stator that matches with it, impeller adopts six moving vanes, stator adopts 15 stator blades, has increased impeller mode pitch diameter number and has avoided occurring low pitch diameter resonance, has reduced sound interference effect; Impeller water inlet limit is strong rear bending, has increased conveyance capacity and has taken into account good cavitation performance simultaneously, and the blade profile of impeller, for becoming cornerite three dimensional space meander configuration, is improved flowing state, obtains high efficiency and reduces power; The bending type stator that adopts spatial to combine with radial, has increased flow conductivity, mates to reduce flow losses improve whole efficiency with uniform section torispherical pumping chamber.
Accompanying drawing explanation
Fig. 1 is hydraulic model axial plane schematic diagram of the present utility model.
Fig. 2 is impeller inlet floor map of the present utility model.
Fig. 3 is impeller blade profile schematic diagram of the present utility model.
Fig. 4 is the stator floor map matching with impeller of the present utility model.
In figure: 1-impeller; 2-stator; 3-stator water inlet limit; 4-stator outlet edge; 5-impeller water inlet limit; 6-back shroud side; 7-front shroud side, 8-import, 9-axis.
Embodiment
High-power shield electric machine core main pump high-efficiency hydraulic model under a kind of multi-source constraint of the utility model, described hydraulic model is the CAP1400 shield electric machine main pump that flow passage components are applicable to have high efficiency, large flow, low power requirements under the spherical pumping chamber of uniform section of structural type and size restriction, further comprises: impeller 1 and the stator 2 matching with it; Described impeller 1 consists of six moving vanes, and impeller water inlet limit 5 is strong rear bending, and the blade profile of impeller is for becoming cornerite three dimensional space meander configuration; Described stator 2 consists of 15 stator blades, and the blade of stator 2 is the bending type that spatial combines with radial.
Six moving vanes of described impeller 1 and 15 stator blades of stator 2 match.
The back shroud side 6 on described impeller water inlet limit 5 is strong rear bending, and back shroud side 6 cornerites are greater than front shroud side 7 cornerites 40 degree.
Described stator water inlet limit 3 is distortion spatial, and stator outlet edge 4 is crooked radial, and both combine into bending type, and the average cornerite of blade is 35 degree, and stator water inlet limit 3 is all parallel with axis 9 with stator outlet edge 4.
Below in conjunction with accompanying drawing and demonstration test, the utility model is elaborated.
With reference to Fig. 1, the high-power shield electric machine core main pump high-efficiency hydraulic model under a kind of multi-source constraint of the utility model consists of impeller 1 and stator 2, and described impeller 1 is double shrouded wheel.
With reference to Fig. 2 and Fig. 3, impeller water inlet limit 5 is to 6 bendings of back shroud side, and the blade profile of impeller becomes spatial warping type; In Fig. 2, between two dotted lines, subtended angle of blade is reduced to front shroud side 7 gradually by back shroud side 6, and back shroud side 6 cornerites are greater than front shroud side 7 cornerite 40 degree.
With reference to Fig. 4, stator 2 comprises 15 stator blades, and stator water inlet limit 3 is spatial warping, and stator outlet edge 4 is for radially bending.
Preparation method of the present utility model is: first according to CAP1400 core main pump parameter request, carry out 1:2.5 ratio reduced scale; Then utilize the full three dimensional design of Bezier parametrization, by CFD, calculate and be optimized; Finally adopt the precision casting of 3D rapid shaping technique.
The utility model carries out verification experimental verification " national industrial pump quality supervision inspection center ".Demonstration test and prototype operating mode conversion result are:
(1) under design parameter, hydraulic model efficiency by inputoutput test is 81.7%, is converted to its efficiency of prototype operating mode up to 86.45%.
(2) being converted to prototype operating mode flow is 21662m^3/h, reaches the requirement of CAP1400 core main pump inflow-rate of water turbine, and under large flow, consumed power is only 6146kw.
(3) actual measurement necessary NPSH NPSH3 is 10.46m, under high efficiency, large flow, takes into account good cavitation performance.
In sum, the utility model can meet the required every harsh conditions that reach of high-power shield electric machine core main pump, can offer reference for CAP1400 shield electric machine core main pump flow passage components the Hydraulic Design.
Above content is the further description of the present invention being done in conjunction with optimal technical scheme, can not assert that the concrete enforcement of invention only limits to these explanations.Concerning general technical staff of the technical field of the invention, not departing under the prerequisite of design of the present invention, can also make simple deduction and replacement, all should be considered as protection scope of the present invention.
Claims (3)
1. the high-power shield electric machine core main pump high-efficiency hydraulic model under multi-source constraint, comprising: impeller (1) and the stator (2) matching with it; It is characterized in that: described impeller (1) consists of six moving vanes, the back shroud side (6) on described impeller water inlet limit (5) is strong rear bending, the implication of described strong rear bending is that back shroud side (6) cornerite is greater than front shroud side (7) cornerite 40 degree, and the blade profile of impeller is for becoming cornerite three dimensional space meander configuration; Described stator (2) consists of 15 stator blades, and the blade of stator (2) is the bending type that spatial combines with radial.
2. the high-power shield electric machine core main pump high-efficiency hydraulic model under a kind of multi-source constraint according to claim 1, is characterized in that: six moving vanes of described impeller (1) and 15 stator blades of stator (2) match.
3. the high-power shield electric machine core main pump high-efficiency hydraulic model under a kind of multi-source constraint according to claim 1, it is characterized in that: described stator water inlet limit (3) is distortion spatial, stator outlet edge (4) is crooked radial, both combine into bending type, the average cornerite of blade is 35 degree, and stator water inlet limit (3) is all parallel with axis (9) with stator outlet edge (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320710516.6U CN203948338U (en) | 2013-11-12 | 2013-11-12 | High-power shield electric machine core main pump high-efficiency hydraulic model under a kind of multi-source constraint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320710516.6U CN203948338U (en) | 2013-11-12 | 2013-11-12 | High-power shield electric machine core main pump high-efficiency hydraulic model under a kind of multi-source constraint |
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| Publication Number | Publication Date |
|---|---|
| CN203948338U true CN203948338U (en) | 2014-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320710516.6U Withdrawn - After Issue CN203948338U (en) | 2013-11-12 | 2013-11-12 | High-power shield electric machine core main pump high-efficiency hydraulic model under a kind of multi-source constraint |
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| Country | Link |
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| CN (1) | CN203948338U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201902A (en) * | 2015-10-16 | 2015-12-30 | 江苏大学 | Hydraulic design method of gas/liquid two-phase centrifugal pump |
-
2013
- 2013-11-12 CN CN201320710516.6U patent/CN203948338U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201902A (en) * | 2015-10-16 | 2015-12-30 | 江苏大学 | Hydraulic design method of gas/liquid two-phase centrifugal pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141119 Effective date of abandoning: 20160615 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |