CN106122031A - Radially return guide vane deep well pump - Google Patents
Radially return guide vane deep well pump Download PDFInfo
- Publication number
- CN106122031A CN106122031A CN201610706805.7A CN201610706805A CN106122031A CN 106122031 A CN106122031 A CN 106122031A CN 201610706805 A CN201610706805 A CN 201610706805A CN 106122031 A CN106122031 A CN 106122031A
- Authority
- CN
- China
- Prior art keywords
- impeller
- return guide
- guide vane
- external diameter
- inlet casing
- 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.)
- Pending
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
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/06—Multi-stage pumps
- F04D1/08—Multi-stage pumps the stages being situated concentrically
-
- 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
- F04D29/2205—Conventional flow pattern
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention announces a kind of radially return guide vane deep well pump, belongs to fluid machinery.By two, above impeller and blower inlet casing are connected same inlet segment and a water exit end series connection, formed by pull bar connection；The stator of described blower inlet casing is the return guide vane with upper and lower cover plate；Impeller is the double shrouded wheel with forward and backward cover plate；Gap between described front shroud of impeller external diameter and blower inlet casing maximum inner diameter is 1mm to 1.5mm；The external diameter of back shroud of impeller is less than the external diameter of front shroud of impeller and more than stator lower cover external diameter；Described return guide vane is the plain vane of involute.In the present invention, return guide vane uses plain vane, and the casting technique of plain vane is the simplest, and production cost is minimum；Return guide vane is shaped as involute, and the area of passage of involute runner is easiest to control, and import laying angle is easiest to calculate, and outlet laying angle is all 90 degree, and therefore its hydraulic loss is smaller, and pump efficiency is higher.
Description
Technical field
The present invention relates to fluid machinery, a kind of main diving centrifugal pump for deep well or major axis used in motor-pumped well is deep
Well pump.
Background technology
Centrifugal pump for deep well is a kind of leptosomatic vertical multi-stage centrifugal pump, at least by two to above impeller and blower inlet casing together with
One inlet segment and a water exit end are in series.At present, centrifugal pump for deep well majority both domestic and external is the deep of employing spatial guide blade
Well centrifugal pump, number of patent application 200420010385.1 " Submersible Pump " is exactly the centrifugal pump for deep well using spatial guide blade.
This centrifugal pump for deep well single-stage lift is low, and axial dimension is long, and its manufacturing cost is the highest.Patent of invention " a kind of centrifugal pump for deep well "
(number of patent application 200510123015.8) have employed the return guide vane of inlet side distortion, although its single-stage lift is high, axial dimension
Short, production cost is substantially reduced than the centrifugal pump for deep well of spatial guide blade, but the manufacture mould of its stator ironcasting is the most complicated, leads
Cause cast iron stator almost to can not make, plastics stator and hot investment casting rustless steel stator can only be made.
Summary of the invention
For solving above-mentioned technical problem, the present invention provides a kind of radially return guide vane deep well pump.
The present invention is achieved through the following technical solutions: a kind of radially return guide vane deep well pump, by two to above impeller and water conservancy diversion
Shell connects same inlet segment and a water exit end series connection, is formed by pull bar connection；The stator of described blower inlet casing be have upper and lower
The return guide vane of cover plate；Impeller is the double shrouded wheel with forward and backward cover plate；Described front shroud of impeller external diameter and blower inlet casing maximum inner diameter
Between gap be 1mm to 1.5mm；The external diameter of back shroud of impeller is less than the external diameter of front shroud of impeller and more than outside stator lower cover
Footpath；Described return guide vane is the plain vane of involute.
It is further: described blower inlet casing external diameter is to set by the given size of GB/T2816-2002 " well immersible pump "
Meter, blower inlet casing wall thickness is designed by Strength co-mputation, and blower inlet casing maximum inner diameter subtracts blower inlet casing wall thickness equal to blower inlet casing external diameter.
In the present invention, return guide vane uses plain vane, and the casting technique of plain vane is the simplest, and production cost is minimum；
Return guide vane is shaped as involute, and the area of passage of involute runner is easiest to control, and import laying angle is easiest to calculate, outlet peace
Putting angle is all 90 degree, and therefore its hydraulic loss is smaller, and pump efficiency is higher.
The invention has the beneficial effects as follows: can be existing deeply with the radial direction return guide vane deep well pump update of present invention proposition
Well immersible pump and borehole shaft driven (centrifugal) pump, be greatly enhanced well pump single-stage lift and reduce well pump axial dimension, making most of kind
Production cost reduces about 1/3.The dependability of the most this novel radial direction return guide vane deep well pump is because the total length of pump subtracts
Short and improve, it can also be ensured that the efficiency index of water pump is reached advanced world standards, thus is greatly saved the energy.
Accompanying drawing explanation
Fig. 1 is the installation diagram of one embodiment of the invention；
Fig. 2 is the blower inlet casing sectional view of one embodiment of the invention；
Fig. 3 is return guide vane plane figure in Fig. 2.
In figure: 1. inlet segment, 2. front shroud, 3. impeller blade external diameter, 4. back shroud, 5. vane inlet limit, 6. lower cover,
7. upper cover plate, 8. the pump chamber ring casing between impeller blade external diameter and blower inlet casing maximum inner diameter, 9. blower inlet casing maximum inner diameter, 10. lead
Stream shell external diameter, 11. stator Exit-edges, 12. pull bars, 13. water exit ends, 14. stator upper cover plate streamlines, 15. stator lower cover plate currents
Line, the convex surface of 16. return guide vanes, the concave surface of 17. return guide vanes.
Detailed description of the invention
The following is a specific embodiment of the present invention, in conjunction with accompanying drawing, the present invention will be further described.
As shown in Figure 1 to Figure 3, a kind of radially return guide vane deep well pump, by two above impeller and blower inlet casing connected same enter
Water section 1 and a water exit end 13 are connected, and are formed by pull bar 12 connection；By standard GB/T/T2816-2002, " well is dived under water
Pump " regulation, blower inlet casing external diameter 10 is necessarily designed to φ about 133, designs blower inlet casing wall thickness by Strength co-mputation and is
6mm, blower inlet casing external diameter 10 deducts the blower inlet casing wall thickness of twice, and trying to achieve blower inlet casing maximum inner diameter 9 is φ about 121, according to specified
It is φ about 100 that the inlet-duct area that flow is needed by stator can calculate lower cover 6 external diameter of blower inlet casing return guide vane, impeller
Use the double shrouded wheel with forward and backward cover plate 2,4, the gap between external diameter and the blower inlet casing maximum inner diameter 9 of front shroud of impeller 2
Being 1mm, be designed to φ about 219, the external diameter of back shroud of impeller 4 is less than the external diameter of front shroud of impeller 2 and more than stator lower cover 6
External diameter, be designed to φ about 108, impeller blade external diameter 3 is the taper seat determined by the forward and backward cover plate of impeller 2,4 external diameter, by leaf
The area of passage of the pump chamber ring casing 8 that impeller blade external diameter 3 and blower inlet casing maximum inner diameter 9 surround is through calculating, in metered flow
40m3The when of/h, water velocity here is slightly less than the current absolute velocity of impeller blade outlet.
Fig. 2 and Fig. 3 is blower inlet casing sectional view and the return guide vane plane figure of the present embodiment.In figure, vane inlet limit 5,
Stator Exit-edge 11, stator upper cover plate streamline 14, stator lower cover streamline 15, the convex surface 16 of return guide vane and the concave surface 17 of return guide vane
Collectively constitute blower inlet casing runner, it is clear that the convex surface 16 of stator and concave surface 17 are all two-dimensional circle cylinder, namely plain vane, this
Individual shape matching is conducive to casting technique.And, the plane projection of convex surface 16 and concave surface 17 is all involute, because involute flow
The area of passage in road is easiest to control, and import laying angle is easiest to calculate, and outlet laying angle is all 90 degree, therefore its hydraulic loss
Smaller, pump efficiency is higher.
Claims (2)
1. a radially return guide vane deep well pump, is connected same inlet segment (1) and a water outlet by two to above impeller and blower inlet casing
Section (13) series connection, is formed by pull bar (12) connection；The stator of described blower inlet casing is the return guide vane with upper and lower cover plate (6,7)；
Impeller is the double shrouded wheel with forward and backward cover plate (2,4)；It is characterized in that: described front shroud of impeller (2) external diameter and blower inlet casing are
Gap between large diameter is 1mm to 1.5mm；The external diameter of back shroud of impeller (4) is less than the external diameter of front shroud of impeller (2) and is more than
Stator lower cover (7) external diameter；Described return guide vane is the plain vane of involute.
Radial direction return guide vane deep well pump the most according to claim 1, it is characterised in that: described blower inlet casing external diameter is by GB/
The given size design of T2816-2002 " well immersible pump ", blower inlet casing wall thickness is designed by Strength co-mputation, blower inlet casing
Maximum inner diameter subtracts blower inlet casing wall thickness equal to blower inlet casing external diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610706805.7A CN106122031A (en) | 2016-08-23 | 2016-08-23 | Radially return guide vane deep well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610706805.7A CN106122031A (en) | 2016-08-23 | 2016-08-23 | Radially return guide vane deep well pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106122031A true CN106122031A (en) | 2016-11-16 |
Family
ID=57274782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610706805.7A Pending CN106122031A (en) | 2016-08-23 | 2016-08-23 | Radially return guide vane deep well pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106122031A (en) |
-
2016
- 2016-08-23 CN CN201610706805.7A patent/CN106122031A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161116 |