CN106194776B - A kind of deep well pump of band from sand discharge structure - Google Patents
A kind of deep well pump of band from sand discharge structure Download PDFInfo
- Publication number
- CN106194776B CN106194776B CN201610824261.4A CN201610824261A CN106194776B CN 106194776 B CN106194776 B CN 106194776B CN 201610824261 A CN201610824261 A CN 201610824261A CN 106194776 B CN106194776 B CN 106194776B
- Authority
- CN
- China
- Prior art keywords
- guide vane
- cover plate
- upper cover
- sand
- sand discharge
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
- F04D13/10—Units comprising pumps and their driving means the pump being electrically driven for submerged use adapted for use in mining bore holes
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- 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
- F04D29/007—Details, component parts, or accessories 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
- 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
- F04D29/2294—Rotors specially for centrifugal pumps with special measures for protection, e.g. against abrasion
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- 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
- F04D29/24—Vanes
- F04D29/242—Geometry, shape
Abstract
The invention belongs to field of fluid machinery, specifically discloses a kind of band from the deep well pump of sand discharge structure.Guide vane upper cover plate is in tilted layout, and the sand discharge hole identical with guide vane lobe numbers is arranged at axial height minimum, realize the solid particulate matters such as gravel to deposit and discharge under differential pressure action under the effect of gravity, the solid particulate matter deposition in deep well pump pump chamber can be reduced；Anti- sand table is arranged between guide vane upper cover plate and impeller, can effectively be prevented the solid particulate matter of deposition in pump chamber from entering blade tip clearance, be reduced abrasion.
Description
Technical field
The invention belongs to field of fluid machinery, is related to the diving centrifugal multistage pump multiple centrifugal pump used in a kind of deep-well, and in particular to one
Kind band is mainly used for groundwater abstraction from the deep well pump of sand discharge structure.
Background technology
In deep well pump field, pumped (conveying) medium is the characteristic of pumped (conveying) medium an important factor for must take into consideration in design, operation
Having on the performance of deep well pump with the service life greatly influences.Many areas, deep well pump are used to pump silt carrying flow at home.Containing sand
Current still have the less sandstone of most of particle diameter to enter deep well pump water inlet flow channel after intake screen, in turbine centrifugal power
Under the action of, part sandstone enter guide vane with current, some sandstone collects in guide vane upper cover plate and front shroud of impeller
Between pump chamber at so that sandstone content is higher at pump chamber, and impeller leaf top part is caused to wear, impeller card can be caused when serious
Extremely, it can not operate, cause the phenomenon of burn-down of electrical machinery.For especially deep well pump after out of service, the sandstone in pump chamber can not be with water
Stream discharge, will all be deposited at pump chamber, leverages the operational reliability of deep well pump, and shorten deep well pump uses the longevity
Life.
The content of the invention
A kind of deep well pump the present invention provides band from sand discharge structure.The structure can discharge the sandstone in pump chamber, subtract
Few abrasion of the sandstone to impeller leaf top part, while have the characteristics that to have the advantages of simple structure and easy realization.
The technical scheme is that：
A kind of band is from the deep well pump of sand discharge structure, and by inlet segment, two-stage and two-stage above impeller and guide vane, water exit end are connected
Form, further include sand discharge hole and anti-sand table,
(1) guide vane upper cover plate radial skew is arranged, inclination angle θ2, its upper surface exists close to the slope bottom of pump shaft
The minimum value of axial height.This arrangement can cause the sandstone in pump chamber to be deposited on guide vane upper cover plate under the effect of gravity
Upper surface slope bottom.
(2) even circumferential arrangement sand discharge hole at guide vane upper cover plate axial height minimum, sand discharge pore size distribution is on gate vane channel
Side and number is consistent with guide vane lobe numbers.This arrangement can cause the little particle sandstone at pump chamber in interstage pressure
Discharged under effect with current, into previous stage gate vane channel.
(3) anti-sand table is arranged between guide vane upper cover plate and front shroud of impeller, anti-sand table radial skew arrangement, inclination angle is
θ1, incline direction is opposite with guide vane upper cover plate.This arrangement can be effectively prevented from some can not pass through row because particle is larger
The gravel in husky hole enters front shroud of impeller and the gap location on the inside of the pump housing under flow action, causes the abrasion on impeller leaf top.
Radius R=0~the 2mm in the sand discharge hole, the tiltangleθ of guide vane upper cover plate2=4~10 °, the inclination angle of anti-sand table
θ1=4~10 °.
The internal diameter D of the anti-sand table2With guide vane upper cover plate exit seal outer diameter D1 and the circumference of sand discharge hole circumference uniform distribution
Diameter D3 meets following relation：(3/4D1+1/4D3)<D2<(1/2D1+1/2D3)。
Gravel above anti-sand table under the effect of gravity, is deposited on anti-sand table upper surface, since sand prevention is taken inventory in a constant inclination
Angle, the gravel of deposition will be deposited further to guide vane upper cover plate upper surface.Gravel below anti-sand table deposits under the effect of gravity
In guide vane upper cover plate upper surface.In guide vane upper cover plate upper surface, the gravel of deposition is accumulated in upper cover plate upper surface under the effect of gravity
Slope bottom.Under the action of interstage pressure, it is deposited on the gravel of guide vane upper cover plate and pump chamber is discharged by sand discharge hole, into leads
Leaf runner.And so on, being automatically drained out for gravel is just realized.And the larger gravel of particle can not be under the stop of anti-sand table
Enter impeller leaf top with pumping the gap location of inner wall, reduce the abrasion of impeller.
Beneficial effects of the present invention：
The configuration of the present invention is simple, it is easy to process, it can realize at the automatic row of little particle sandstone and reduce bulky grain sand
Abrasion of the stone to leaf top.
Brief description of the drawings
Fig. 1 is the schematic diagram of one embodiment of the present of invention；
Fig. 2 is the partial enlarged view of the embodiment of the present invention；
Fig. 3 is the guide vane section schematic diagram of the invention having the function of from sand discharge deep well pump；
In figure：1- inlet segments, 2- impellers, 3- guide vanes, 4- sand discharges hole, 5- guide vane upper cover plates, the anti-sand tables of 6-, 7- water outlets.
Embodiment
The present invention is further described with reference to the accompanying drawings and examples.
Embodiment illustrated in fig. 1 is a deep well pump, and a vertical multi-stage centrifugal pump, it is by three-level impeller 2 and guide vane 3
Even same inlet segment 1 and a water exit end 7 are in series, and guide vane 3 has guide vane upper cover plate 5 and anti-sand table 6, guide vane upper cover plate
5 arrange sand discharge hole 4.
It is the partial enlarged view of Fig. 1 embodiments shown in Fig. 2, guide vane upper cover plate 5 has been evenly arranged sand discharge hole 4, the sand discharge hole 4
It is arranged at guide vane upper cover plate axial height minimum so that the solid particle such as gravel under depositing due to gravity can be from pump chamber
Place's discharge, anti-sand table 6 are arranged between impeller 2 and guide vane upper cover plate 5, can prevent the solid particles such as gravel from entering blade tip clearance
Place, improves the reliability and service life of pump.
It is the guide vane section enlarged drawing during Fig. 1 is implemented shown in Fig. 3, guide vane upper cover plate 5 is in tilted layout, tiltangleθ2=4~
10°.At guide vane upper cover plate axial height minimum, the sand discharge hole 4 identical with guide vane number of blade Z1, sand discharge pore radius are evenly arranged
R=0~2mm.Anti- sand table 6 is in tilted layout, and incline direction is with guide vane upper cover plate on the contrary, tiltangleθ1=4~10 °.In anti-sand table
Footpath D2It is related with the circle diameter D3 of 5 exit seal outer diameter D1 of guide vane upper cover plate and 4 circumference uniform distribution of sand discharge hole, i.e. (3/4D1+1/
4D3)<D2<(1/2D1+1/2D3)。
When the pump is operated, due in pump chamber fluid pressure higher than fluid pressure in previous stage gate vane channel, in pump chamber due to
Gravity and be deposited on the solid particulate matters such as the gravel at sand discharge hole 4 under differential pressure action, enter previous stage guide vane with current
Runner simultaneously reenters impeller, and then is discharged with current.When solid particulate matter be relatively large in diameter and can not be by sand discharge hole when, sand prevention
Disk 6 can effectively prevent it from entering at blade tip clearance and cause friction damage to impeller.
Basic principle, main feature and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, various changes and modifications of the present invention are possible without departing from the spirit and scope of the present invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.
Claims (2)
1. a kind of band is from the deep well pump of sand discharge structure, by inlet segment（1）, two-stage and two-stage above impeller（2）With guide vane（3）, go out
Water section（7）It is in series, it is characterised in that further include sand discharge hole（4）With anti-sand table（6）, guide vane upper cover plate（5）Radial skew cloth
Put, inclination angle θ2, minimum value of the surface grades there are axial height thereon；In guide vane upper cover plate（5）The axial height of upper surface
Even circumferential arrangement sand discharge hole at degree minimum（4）, sand discharge hole（4）It is distributed in gate vane channel top and number and guide vane lobe numbers
Unanimously；Guide vane upper cover plate（5）Anti- sand table is arranged between front shroud of impeller（6）, anti-sand table（6）Radial skew arrangement, inclination angle
For θ1, incline direction is opposite with guide vane upper cover plate；The anti-sand table（6）Internal diameter D2With guide vane upper cover plate（5）Exit sealing is outer
Footpath D1 and sand discharge hole（4）The circle diameter D3 of circumference uniform distribution meets following relation：（3/4D1+1/4D3）<D2<（1/2D1+1/2D3）.
2. a kind of band according to claim 1 is from the deep well pump of sand discharge structure, it is characterised in that the sand discharge hole（4）'s
Radius R=0~2mm, guide vane upper cover plate（5）Tiltangleθ2=4~10 °, anti-sand table（6）Tiltangleθ1=4~10 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610824261.4A CN106194776B (en) | 2016-09-14 | 2016-09-14 | A kind of deep well pump of band from sand discharge structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610824261.4A CN106194776B (en) | 2016-09-14 | 2016-09-14 | A kind of deep well pump of band from sand discharge structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106194776A CN106194776A (en) | 2016-12-07 |
| CN106194776B true CN106194776B (en) | 2018-04-17 |
Family
ID=58067863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610824261.4A Active CN106194776B (en) | 2016-09-14 | 2016-09-14 | A kind of deep well pump of band from sand discharge structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106194776B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412827A (en) * | 2020-11-18 | 2021-02-26 | 江苏师范大学 | Deep well submersible pump |
| CN114233641A (en) * | 2021-10-29 | 2022-03-25 | 利欧集团浙江泵业有限公司 | Double-flow-passage heat-dissipation water pump |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3964664B2 (en) * | 2001-12-14 | 2007-08-22 | 株式会社川本製作所 | Vertical multistage centrifugal pump |
| US8801360B2 (en) * | 2009-09-09 | 2014-08-12 | Baker Hughes Incorporated | Centrifugal pump with thrust balance holes in diffuser |
| US9624930B2 (en) * | 2012-12-20 | 2017-04-18 | Ge Oil & Gas Esp, Inc. | Multiphase pumping system |
| CN203420907U (en) * | 2013-09-06 | 2014-02-05 | 浙江大福泵业有限公司 | Deep-well submersible electric pump with sand-proof function |
| CN206071899U (en) * | 2016-09-14 | 2017-04-05 | 江苏大学 | A kind of deep well pump of band from sand discharge structure |
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2016
- 2016-09-14 CN CN201610824261.4A patent/CN106194776B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106194776A (en) | 2016-12-07 |
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