CN106194776A - A kind of band is from the deep well pump of sand discharge structure - Google Patents

A kind of band is from the deep well pump of sand discharge structure Download PDF

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Publication number
CN106194776A
CN106194776A CN201610824261.4A CN201610824261A CN106194776A CN 106194776 A CN106194776 A CN 106194776A CN 201610824261 A CN201610824261 A CN 201610824261A CN 106194776 A CN106194776 A CN 106194776A
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CN
China
Prior art keywords
cover plate
upper cover
sand discharge
sand
stator
Prior art date
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Granted
Application number
CN201610824261.4A
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Chinese (zh)
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CN106194776B (en
Inventor
周岭
杨阳
陆伟刚
施卫东
王川
蒋小平
李伟
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Jiangsu University
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Jiangsu University
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Priority to CN201610824261.4A priority Critical patent/CN106194776B/en
Publication of CN106194776A publication Critical patent/CN106194776A/en
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Publication of CN106194776B publication Critical patent/CN106194776B/en
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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
    • 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
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention belongs to field of fluid machinery, specifically disclose a kind of band deep well pump from sand discharge structure.Stator upper cover plate is in tilted layout, and at axial height minimum, arrange the sand discharge hole identical with stator lobe numbers, achieve the solid particulate matters such as gravel to deposit under gravity and discharge under differential pressure action, it is possible to reduce the solid particulate matter deposition in deep well pump pump chamber；Anti-sand table is arranged between stator upper cover plate and impeller, it is possible to the solid particulate matter deposited in being effectively prevented pump chamber enters blade tip clearance, reduces abrasion.

Description

A kind of band is from the deep well pump of sand discharge structure
Technical field
The invention belongs to field of fluid machinery, relate to the diving centrifugal multistage pump multiple centrifugal pump used in a kind of deep-well, be specifically related to one Kind band, from the deep well pump of sand discharge structure, is mainly used in groundwater abstraction.
Background technology
In deep well pump field, pumped (conveying) medium is the key factor that must take in design, operation, the characteristic of pumped (conveying) medium Deep-well pump performance and life-span are had and greatly affects.A lot of areas at home, deep well pump is used to pump silt carrying flow.Containing sand Current still have the sandstone that most of particle diameter is less to enter deep well pump water inlet flow channel, in turbine centrifugal power after intake screen Effect under, part sandstone enter stator along with current, and some sandstone collect in stator upper cover plate and front shroud of impeller Between pump chamber at so that at pump chamber, sandstone content is higher, divides leaf bucket tip and causes abrasion, can cause impeller card time serious Extremely, it is impossible to operating, the phenomenon of burn-down of electric motor is caused.Especially deep well pump is after out of service, and the sandstone in pump chamber cannot be with water Stream is discharged, and will all be deposited at pump chamber, leverages the operational reliability of deep well pump, shortens the use longevity of deep well pump Life.
Summary of the invention
The invention provides a kind of band deep well pump from sand discharge structure.Sandstone in pump chamber can be discharged by this structure, subtracts The abrasion that leaf bucket tip is divided by few sandstone, has simple in construction simultaneously, it is easy to accomplish feature.
The technical scheme is that
A kind of band is from the deep well pump of sand discharge structure, and by the above impeller of inlet segment, two-stage and two-stage and stator, water exit end is connected Form, also include sand discharge hole and anti-sand table,
(1) stator upper cover plate radial skew is arranged, inclination angle is θ2, its upper surface exists bottom the slope of pump shaft The minima of axial height.This arrangement is so that the sandstone in pump chamber are deposited on stator upper cover plate under gravity Upper surface slope bottom.
(2) at stator upper cover plate axial height minimum, even circumferential arranges sand discharge hole, and sand discharge pore size distribution is on gate vane channel Side and number are consistent with stator lobe numbers.This arrangement is so that the little granule sandstone at pump chamber are at interstage pressure Discharge with current under effect, enter previous stage gate vane channel.
(3) arranging anti-sand table between stator upper cover plate and front shroud of impeller, anti-sand table radial skew is arranged, inclination angle is θ1, incline direction is contrary with stator upper cover plate.This layout can be effectively prevented from some cannot be by row because granule is relatively big The gravel in husky hole enters the gap location inside front shroud of impeller and the pump housing under flow action, causes the abrasion on impeller leaf top.
Radius R=0～2mm in described sand discharge hole, the tiltangleθ of stator upper cover plate2=4～10 °, the inclination angle of anti-sand table θ1=4～10 °.
The internal diameter D of described anti-sand table2With stator 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 gravity, is deposited on anti-sand table upper surface, owing to sand prevention is taken inventory at a constant inclination Angle, the gravel of deposition by further precipitation to stator upper cover plate upper surface.Gravel below anti-sand table deposits under gravity At stator upper cover plate upper surface.Gravel in stator upper cover plate upper surface deposition is accumulated in upper cover plate upper surface under gravity Slope bottom.Under the effect of interstage pressure, the gravel being deposited on stator upper cover plate discharges pump chamber by sand discharge hole, and entrance is led Leaf runner.And so forth, being automatically drained out of gravel is just achieved.And the bigger gravel of granule cannot enter under the stop of anti-sand table Enter the gap location on impeller leaf top and pump inwall, decrease the abrasion of impeller.
Beneficial effects of the present invention:
Present configuration is simple, it is simple to processing, it is possible to realizes at the automatic row of little granule sandstone and reduces bulky grain sand The stone abrasion to leaf top.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of one embodiment of the present of invention；
Fig. 2 is the partial enlarged drawing of the embodiment of the present invention；
Fig. 3 is the guide vane section sketch that the present invention has from sand discharge function deep well pump；
In figure: 1-inlet segment, 2-impeller, 3-stator, 4-sand discharge hole, 5-stator upper cover plate, the anti-sand table of 6-, 7-water side.
Detailed description of the invention
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Embodiment illustrated in fig. 1 is a deep well pump, is also a vertical multi-stage centrifugal pump, and it is by three grades of impellers 2 and stator 3 Even same inlet segment 1 and a water exit end 7 are in series, and stator 3 has stator upper cover plate 5 and anti-sand table 6, stator upper cover plate 5 arrange sand discharge hole 4.
Being the partial enlarged drawing of Fig. 1 embodiment shown in Fig. 2, stator upper cover plate 5 has been evenly arranged sand discharge hole 4, this sand discharge hole 4 It is arranged at stator upper cover plate axial height minimum so that the solid particles such as the gravel under depositing because of action of gravity can be from pump chamber Place discharges, and anti-sand table 6 is arranged between impeller 2 and stator upper cover plate 5, it is possible to prevent the solid particles such as gravel from entering blade tip clearance Place, improves reliability and the service life of pump.
Being the guide vane section enlarged drawing during Fig. 1 implements shown in Fig. 3, stator upper cover plate 5 is in tilted layout, tiltangleθ2=4～ 10°.At stator upper cover plate axial height minimum, it is evenly arranged the sand discharge hole 4 identical with stator number of blade Z1, sand discharge pore radius R=0～2mm.Anti-sand table 6 is in tilted layout, and incline direction is contrary with stator upper cover plate, tiltangleθ1=4～10 °.In anti-sand table Footpath D2Relevant with the circle diameter D3 of stator upper cover plate 5 exit seal outer diameter D1 and sand discharge hole 4 circumference uniform distribution, i.e. (3/4D1+1/ 4D3)<D2<(1/2D1+1/2D3)。
When the pump is operated, due in pump chamber fluid pressure higher than in fluid pressure in previous stage gate vane channel, pump chamber due to Action of 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 stator with current Runner also reenters impeller, and then discharges with current.When solid particulate matter is relatively large in diameter and cannot pass through sand discharge hole, sand prevention Dish 6 can be effectively prevented at its entrance blade tip clearance and impeller is caused friction damage.
The ultimate principle of the present invention, principal character and advantages of the present invention have more than been shown and described.The technology of the industry Personnel, it should be appreciated that the present invention is not restricted to the described embodiments, simply illustrating this described in above-described embodiment and description The principle of invention, the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these become Change and improvement both falls within scope of the claimed invention.

Claims (3)

1. band is from a deep well pump for sand discharge structure, by inlet segment (1), two-stage and the above impeller of two-stage (2) and stator (3), goes out Water section (7) is in series, it is characterised in that also include sand discharge hole (4) and anti-sand table (6), stator upper cover plate (5) radial skew cloth Putting, inclination angle is θ2, bottom the slope of pump shaft, there is the minima of axial height in its upper surface；At stator upper cover plate (5) at axial height minimum even circumferential arrange sand discharge hole (4), sand discharge hole (4) be distributed in above gate vane channel and number with lead Leaf lobe numbers is consistent；Anti-sand table (6), anti-sand table (6) radial skew cloth is arranged between stator upper cover plate (5) and front shroud of impeller Putting, inclination angle is θ1, incline direction is contrary with stator upper cover plate.
A kind of band the most according to claim 1 is from the deep well pump of sand discharge structure, it is characterised in that described sand discharge hole (4) Radius R=0～2mm, the tiltangleθ of stator upper cover plate (5)2=4～10 °, the tiltangleθ of anti-sand table (6)1=4～10 °.
A kind of band the most according to claim 1 is from the deep well pump of sand discharge structure, it is characterised in that described anti-sand table (6) Internal diameter D2Meet as follows with the circle diameter D3 of stator upper cover plate (5) exit seal outer diameter D1 and sand discharge hole (4) circumference uniform distribution Relation: (3/4D1+1/4D3)<D2<(1/2D1+1/2D3)。
CN201610824261.4A 2016-09-14 2016-09-14 A kind of deep well pump of band from sand discharge structure Active CN106194776B (en)

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

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CN106194776A true CN106194776A (en) 2016-12-07
CN106194776B CN106194776B (en) 2018-04-17

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Cited By (2)

* Cited by examiner, † Cited by third party
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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003184778A (en) * 2001-12-14 2003-07-03 Kawamoto Pump Mfg Co Ltd Vertical type multi-stage centrifugal pump
US20110058928A1 (en) * 2009-09-09 2011-03-10 Baker Hughes Incorporated Centrifugal pump with thrust balance holes in diffuser
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
CA2895715A1 (en) * 2012-12-20 2014-06-26 Ge Oil & Gas Esp, Inc. Multiphase pumping system
CN206071899U (en) * 2016-09-14 2017-04-05 江苏大学 A kind of deep well pump of band from sand discharge structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003184778A (en) * 2001-12-14 2003-07-03 Kawamoto Pump Mfg Co Ltd Vertical type multi-stage centrifugal pump
US20110058928A1 (en) * 2009-09-09 2011-03-10 Baker Hughes Incorporated Centrifugal pump with thrust balance holes in diffuser
CA2895715A1 (en) * 2012-12-20 2014-06-26 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

Cited By (2)

* Cited by examiner, † Cited by third party
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

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