CN207049074U - A kind of Combined guide impeller structure - Google Patents
A kind of Combined guide impeller structure Download PDFInfo
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- CN207049074U CN207049074U CN201720342479.6U CN201720342479U CN207049074U CN 207049074 U CN207049074 U CN 207049074U CN 201720342479 U CN201720342479 U CN 201720342479U CN 207049074 U CN207049074 U CN 207049074U
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- baffle
- impeller
- stator
- lower cover
- axial direction
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Abstract
It the utility model is related to a kind of Combined guide impeller structure, including pump case and pump shaft, first impeller and the second impeller are installed on the pump shaft, the side of second impeller is provided with the first baffle, for first baffle between first impeller and second impeller, the other side of second impeller is provided with the second baffle.The utility model is a kind of novel combination type guide vane structure, the radial transition section of entrance is eliminated, stator outlet transition uses big slope runner, makes runner geometry simple, two sections of stators reduce the complexity of blade using prismatic blade, reach manufacture, difficulty of processing and the cost for reducing parts.
Description
Technical field
The utility model is a kind of Combined guide impeller structure, suitable for the structure of multistage long-shaft pump, belongs to pump installation skill
Art field.
Background technology
Long-shaft pump is mainly used in narrow space and the relatively low occasion of liquid level, so being widely used in mining, waterpower, oil are opened
The industry such as adopt.It is stricter to physical dimension control ratio in design process to meet the constraint using space, but pump housing flow channel space
Geometrical property is more complicated, produces complicated water runner and the less parts difficulty increase of size, while manufacturing cost increase.
Most-often used in major axis pump configuration both at home and abroad at present is spatial guide blade, and its geometric properties is complicated, manufacture difficulty is big, production cost
It is high.Up to the present new guide vane structure is not had also to propose solve the problem,
Through retrieval, the design of centrifugal multistage pump multiple centrifugal pump new spatial stator and optimization analysis (the centrifugal multistage pump multiple centrifugal pump novel airs such as Yuan Danqing
Between stator design and optimization analysis mechanical facilities of irrigation and drainage engineering journal .2015,33 (10):853-858,894.) one proposed in a text
Kind novel guiding blade is suitable for sectional multi-stage centrifugal pump, and by traditional front and back guide blade integrator, its structure is more unified,
But stator degreeof tortuosity increase, parts it is compact-sized, add the manufacture difficulty of the part, the type stator is not suitable for
Used in the small pump of flow.
Utility model content
The purpose of this utility model is to provide a kind of Combined guide impeller structure, passes through axial direction part stator and radial section stator
The mode being combined so that the stator geometry designs of long-shaft pump and the manufacturing are all greatly simplified.
To realize above-mentioned purpose of utility model, the technical scheme that the utility model is taken is：A kind of Combined guide impeller structure,
Including pump case and pump shaft, the first impeller and the second impeller are installed on the pump shaft, the side of second impeller is provided with
One baffle, first baffle is between first impeller and second impeller, and second impeller is in addition
Side is provided with the second baffle.
In such scheme, first baffle is led including the first baffle upper cover plate, the first baffle lower cover, first
Flow axis is located at the first baffle lower cover to stator and the first baffle radial vane, the first baffle axial direction stator
Between plate and the pump case, the first baffle radial vane is located at the first baffle lower cover and first water conservancy diversion
Between body upper cover plate, second impeller is located inside the first baffle upper cover plate；Second baffle includes second
Baffle upper cover plate, the second baffle lower cover, the second baffle axial direction stator and the second baffle radial vane, described second
Baffle axial direction stator is between the second baffle lower cover and the first baffle upper cover plate, second water conservancy diversion
Body radial vane is between the second baffle lower cover and the second baffle upper cover plate.
In such scheme, the first baffle axial direction stator, the second baffle axial direction stator, first water conservancy diversion
Body radial vane and the second baffle radial vane are straight stator, the first baffle axial direction stator and described second
Baffle axial direction stator is open architecture, and the first baffle radial vane and the second baffle radial vane are
Closed type structure.
In such scheme, the first seal ring, first impeller are provided between the wheel hub and pump case of first impeller
Wheel hub and the first baffle lower cover between be provided with the second seal ring, the first baffle lower cover and pump shaft it
Between be provided with the first sliding bearing.
In such scheme, the 3rd seal ring is provided between the wheel hub of second impeller and the first baffle upper cover plate,
The 4th seal ring, the second baffle lower cover are provided between the wheel hub of second impeller and the second baffle lower cover
The second sliding bearing is provided between the pump shaft.
In such scheme, described first impeller one end is positioned by fixing nut, first impeller and second leaf
Positioned between wheel by the second axle sleeve, the other end of second impeller is positioned on the shaft shoulder of pump shaft by the first axle sleeve.
In such scheme, the second baffle upper cover plate is connected with outlet pipe.
The beneficial effects of the utility model：（1）Baffle is reachable by the cooperation between axial stator and radial vane
To liquid stream caused circular rector in conversion process of energy is eliminated, can set according to different use occasions and the needs manufactured
Circular rector proportion that each stator undertakes is adjusted in meter to be optimized to performance.（2）Combined guide impeller structure of the present utility model
The radial transition section at vane inlet is eliminated, outlet transition uses big slope runner, simplifies the geometry of stator, reduces
The geometry complexity of blade and runner, it is finally reached the purpose of simplified part.（3）Using geometric properties rule runner and
The simply straight stator of space geometry, simplifies component geometry feature, while by the first baffle axial direction stator and the second baffle
Axial stator is designed as open architecture, and the first baffle radial vane and the second baffle radial vane are designed as into enclosed knot
Structure, facilitate shaping, the demoulding in manufacturing process, be advantageous to improve the machining accuracy in later stage, solve stator system in small size pump
The problem of manufacturing accuracy is low, while combined type stator make it that the structure of pump is more succinct using simple geometric properties, is easy to manufacture
Assembling and maintenance.（4）By changing guide vane structure, and by numerical computations to Traditional Space guide structure leaf and novel combination type
The flow field of guide vane structure is analyzed, and being as a result shown under design conditions can make efficiency improve 4.23%.（5）Traditional Space stator
Interior backflow is serious, and novel combination type stator can be very good to control the generation of backflow phenomenon.
Brief description of the drawings
Fig. 1 is the assembling schematic diagram of the utility model device.
Fig. 2 is the first baffle structural representation.
Fig. 3 is the second baffle structural representation.
Fig. 4 is Traditional Space stator motion pattern.
Fig. 5 is Traditional Space stator blade and each gross section streamlines figure.
Fig. 6 is the motion pattern of combined type stator of the present utility model.
Fig. 7 is combined type stator of the present utility model and each gross section streamlines figure.
In figure, 1. pump cases, 2. first seal rings, 3. second seal rings, 4. first sliding bearings, 5. axle sleeves, 6. the 3rd stop
Leak ring, 7. second impellers, 8. the 4th seal rings, 9. first axle sleeves, 10. outlet pipes, 11. second sliding bearings, 12. second water conservancy diversion
Body upper cover plate, 13. pump shafts, 15. second axle sleeves, 16. first impellers, 17. fixing nuts.18. the first baffle axial direction stator,
19. the first baffle lower cover, 20. first baffle radial vanes, 21. first baffle upper cover plates, 22. second baffle axles
To stator, 23. second baffle lower covers, 24. second baffle radial vanes.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments：
Refer to accompanying drawing 1, accompanying drawing 2 and accompanying drawing 3, Combined guide impeller structure of the present utility model, including pump case 1 and pump shaft
13, the first impeller 16 and the second impeller 7 are installed on the pump shaft 13, the side of second impeller 7 is provided with the first water conservancy diversion
Body, first baffle is between first impeller 16 and second impeller 7, and other the one of second impeller 7
Side is provided with the second baffle.First baffle includes the first baffle upper cover plate 21, the first baffle lower cover 19, the
One baffle axial direction stator 18 and the first baffle radial vane 20, the first baffle axial direction stator 18 are located at described first
Between baffle lower cover 19 and the pump case 1, the first baffle radial vane 20 is located at the first baffle lower cover
Between plate 19 and the first baffle upper cover plate 21, second impeller 7 is located inside the first baffle upper cover plate 21；
Second baffle includes the second baffle upper cover plate 12, the second baffle lower cover 23, the second baffle axial direction stator 22
With the second baffle radial vane 24, the second baffle axial direction stator 22 is located at the second baffle lower cover 23 and institute
Between stating the first baffle upper cover plate 21, the second baffle radial vane 24 is located at the He of the second baffle lower cover 23
Between the second baffle upper cover plate 12, the second baffle upper cover plate 12 is connected with outlet pipe 10.
In order to controlling pump intracavitary high-pressure fluid to impeller inlet low-pressure fluid reveal, the wheel hub of first impeller 16 and
The first seal ring 2 is provided between pump case 1, is set between the wheel hub of first impeller 16 and the first baffle lower cover 19
The second seal ring 3 is equipped with, the 3rd seal ring 6 is provided between the wheel hub of second impeller 7 and the first baffle upper cover plate 21,
The 4th seal ring 8 is provided between the wheel hub of second impeller 7 and the second baffle lower cover 23.For balance movement process
The radial load that middle rotor is subject to, the first sliding bearing 4 is provided between the first baffle lower cover 19 and pump shaft 13, it is described
The second sliding bearing 11 is provided between second baffle lower cover 23 and the pump shaft 13.Described one end of first impeller 16 passes through
Fixing nut 17 positions, and is positioned between first impeller 16 and second impeller 7 by the second axle sleeve 15, second leaf
The other end of wheel 7 is positioned on the shaft shoulder of pump shaft 13 by the first axle sleeve 9.
Preferably, the first baffle axial direction stator 18, the second baffle axial direction stator 22, first water conservancy diversion
Body radial vane 20 and the second baffle radial vane 24 are straight stator, the first baffle axial direction stator 18 and institute
It is open architecture to state the second baffle axial direction stator 22, the first baffle radial vane 20 and the second baffle footpath
It is closed type structure to stator 24.
Circular rector is eliminated using two sections of stators, can be needed to adjust in the design often with what is manufactured according to different use occasions
The circular rector proportion that individual stator undertakes optimizes to performance, is simply directly led using the runner and space geometry of geometric properties rule
Leaf, component geometry feature is simplified, while the axial stator of two-stage baffle is designed to open form, radial vane is set as sealing
Structure is closed, is facilitated in manufacturing process and is molded, is stripped, is advantageous to improve the machining accuracy in later stage.The form stator can solve small chi
The problem of stator accuracy of manufacture is low in very little pump, simple geometric properties make pump configuration succinct, are easy to manufacture to assemble and overhaul.It is logical
Fig. 4 to Fig. 7 is crossed to can be seen that by changing guide vane structure, and by numerical computations to Traditional Space guide structure leaf and this practicality
The flow field of new Combined guide impeller structure is analyzed, and being as a result shown under design conditions can make efficiency improve 4.23%.Pass through
Numerical analysis can also be seen that the backflow in Traditional Space stator is serious, and combined type stator of the present utility model can be very good
Control the generation of backflow phenomenon.
Claims (6)
1. a kind of Combined guide impeller structure, including pump case (1) and pump shaft (13), it is characterised in that installed on the pump shaft (13)
There are the first impeller (16) and the second impeller (7), the side of second impeller (7) is provided with the first baffle, and described first leads
Between first impeller (16) and second impeller (7), the other side of second impeller (7) is provided with fluid
Second baffle；First baffle is led including the first baffle upper cover plate (21), the first baffle lower cover (19), first
Flow axis is to stator (18) and the first baffle radial vane (20), and the first baffle axial direction stator (18) is positioned at described the
Between one baffle lower cover (19) and the pump case (1), the first baffle radial vane (20) is led positioned at described first
Between fluid lower cover (19) and the first baffle upper cover plate (21), second impeller (7) is located at first water conservancy diversion
Body upper cover plate (21) is internal；Second baffle include the second baffle upper cover plate (12), the second baffle lower cover (23),
Second baffle axial direction stator (22) and the second baffle radial vane (24), the second baffle axial direction stator (22) are located at
Between the second baffle lower cover (23) and the first baffle upper cover plate (21), the second baffle radial vane
(24) between the second baffle lower cover (23) and the second baffle upper cover plate (12).
A kind of 2. Combined guide impeller structure according to claim 1, it is characterised in that the first baffle axial direction stator
(18), the second baffle axial direction stator (22), the first baffle radial vane (20) and the second baffle footpath
It is straight stator to stator (24), the first baffle axial direction stator (18) and the second baffle axial direction stator (22) are equal
For open architecture, the first baffle radial vane (20) and the second baffle radial vane (24) are enclosed knot
Structure.
A kind of 3. Combined guide impeller structure according to claim 2, it is characterised in that the wheel hub of first impeller (16)
The first seal ring (2), the wheel hub and the first baffle lower cover of first impeller (16) are provided between pump case (1)
(19) the second seal ring (3) is provided between, first is provided between the first baffle lower cover (19) and pump shaft (13)
Sliding bearing (4).
A kind of 4. Combined guide impeller structure according to claim 2, it is characterised in that the wheel hub of second impeller (7)
And first be provided with the 3rd seal ring (6), the wheel hub and the second water conservancy diversion of second impeller (7) between baffle upper cover plate (21)
Be provided with the 4th seal ring (8) between body lower cover (23), the second baffle lower cover (23) and the pump shaft (13) it
Between be provided with the second sliding bearing (11).
A kind of 5. Combined guide impeller structure according to claim 1 or 2, it is characterised in that first impeller (16) one
End is positioned by fixing nut (17), passes through the second axle sleeve (15) between first impeller (16) and second impeller (7)
Positioning, the other end of second impeller (7) are positioned on the shaft shoulder of pump shaft (13) by the first axle sleeve (9).
6. a kind of Combined guide impeller structure according to claim 1 or 2, it is characterised in that covered on second baffle
Plate (12) is connected with outlet pipe (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720342479.6U CN207049074U (en) | 2017-04-01 | 2017-04-01 | A kind of Combined guide impeller structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720342479.6U CN207049074U (en) | 2017-04-01 | 2017-04-01 | A kind of Combined guide impeller structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207049074U true CN207049074U (en) | 2018-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720342479.6U Active CN207049074U (en) | 2017-04-01 | 2017-04-01 | A kind of Combined guide impeller structure |
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| CN (1) | CN207049074U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106939904A (en) * | 2017-04-01 | 2017-07-11 | 江苏大学 | A kind of Combined guide impeller structure |
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2017
- 2017-04-01 CN CN201720342479.6U patent/CN207049074U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106939904A (en) * | 2017-04-01 | 2017-07-11 | 江苏大学 | A kind of Combined guide impeller structure |
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