CN105987008A - Shielding pump with inducting wheel - Google Patents
Shielding pump with inducting wheel Download PDFInfo
- Publication number
- CN105987008A CN105987008A CN201510045952.XA CN201510045952A CN105987008A CN 105987008 A CN105987008 A CN 105987008A CN 201510045952 A CN201510045952 A CN 201510045952A CN 105987008 A CN105987008 A CN 105987008A
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- China
- Prior art keywords
- inducer
- pump
- canned motor
- axial
- band
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Abstract
The invention relates to a shielding pump with an inducting wheel. The shielding pump comprises a stator (1) having a coil winding, a rotor (2) having an axial inducting wheel and a cage mouse structure, a centrifugal impeller (3), a connecting shaft (4), a centrifugal pump shell (5), a bearing (6), a bearing support (7), a pump shell front cover plate (8), a pump shell back cover plate (9), an inlet flow-guide pipe (10) and a base (11). During operation of the shielding pump, coils of the stator generate a rotary magnetic field and a mouse cage is driven to rotate such that an axial blade and a centrifugal blade rotate to drive fluid to flow. A motor rotor of the shielding pump is changed to a structure containing the axial inducting wheel. The top of a conventional inducting wheel, namely, the top of the axial-flow blade is provided with a cylindrical structure in order to eliminate leakage loss of a blade tip. Due to an annular or spiral groove in the pump, leakage loss is reduced. While ensuring non-leakage feature of the shielding pump, driving force of the overall pump is added so that efficiency of the overall pump is increased and cavitation erosion resistance of the pump is improved.
Description
Technical field
The present invention relates to fluid machinery, particularly to the canned motor pump of a kind of band inducer.
Background technology
Canned motor pump is a kind of leak free centrifugal pump.Generally being connected with recirculated cooling water between rotor and motor stator, the heat sent when can be worked by part motor is taken away, and ensures the properly functioning of motor.But, the form of the main still centrifugal pump of the impeller form of existing canned motor pump, in the case of a few thing, impeller also can produce cavitation.In order to alleviate the impact of cavitation erosion in Centrifugal Pump Design, it is typically before centrifugal impeller, install an inducer additional, the present invention is that this inducer and rotor are designed to one, designing a cylinder-like structure at the i.e. axial wheel vane tip of traditional inducer to lose with the leakage eliminating blade tip, the slit design that possible generation liquid stream produces leakage loss from high-pressure side to low-pressure end in pump has annular or spiral groove.Canned motor pump motor is placed in wheel nose, while keeping canned motor pump No leakage characteristic, also add the anti-cavitation characteristic of pump, also improve the work efficiency that pump is overall.
Summary of the invention
It is an object of the invention to provide the canned motor pump of a kind of band inducer, inducer is integrated with design of electrical motor, a cylinder-like structure is designed to eliminate the leakage loss of blade tip at the i.e. axial wheel vane tip of traditional inducer, liquid stream may be produced in pump and have annular or spiral groove from high-pressure side to the slit design of low-pressure end generation leakage loss, canned motor pump motor is placed in wheel nose, while ensureing the features such as canned motor pump No leakage, high security, the impact of cavitation erosion can also be alleviated, increase canned motor pump bulk life time and improve the work efficiency of canned motor pump.
For realizing above-mentioned functions, the canned motor pump of the band inducer of the present invention, including the stator of belt coil winding, the rotor with axial inducer and cage-shaped structure, centrifugal impeller, connecting shaft, centrifugal pump shell, bearing, the support of bearing, pump case front shroud, pump case back shroud, inlet honeycomb duct, base.During the work of this canned motor pump, the coil in stator produces rotating excitation field, drives the mouse cage in rotor to rotate, so that axially inducer blade and centrifugeblade drive fluid flowing.The present invention changes traditional canned motor pump rotor into structure containing axial inducer, also add the driving force that pump is overall while ensureing canned motor pump No leakage characteristic, improves the efficiency that pump is overall, improves the cavitation erosion performance of pump.
The present invention is technically characterized in that, the rotor of the motor of this canned motor pump and inducer are designed to integrative-structure, the rotor of the present invention includes wheel hub, inducer blade, includes three parts of column type cylinder of cage-shaped structure, and these three part is one overall along being radially sequentially connected with.The blade of inducer can be with the leaf grating form of multiple airfoil fans being axial-flow pump, it is also possible to be spiral helicine blade shape.Rotor is embedded into cage-shaped structure when asynchronous machine, can also use the forms such as embedded permanent magnet when synchronous motor or other situation.
The technical characteristic of the present invention also resides in, and on the stator between motor stator and rotor, similar with traditional canned motor pump have one layer of non-magnet material.Process a series of annular groove or spiral groove on the face of cylinder of this non-magnet material or on cylindrical rotor outer surface vertically, can reduce along between rotor and the interlayer of non-magnet material from high-pressure side to the leakage loss of low-pressure end fluid.
Another technical characteristic of the present invention is on the pump case front shroud inwall corresponding with centrifugal pump impeller or at the front shroud outer side surface of centrifugal impeller, a series of annulars or spiral groove are processed, from impeller outlet higher-pressure region to the leakage loss of impeller eye low-pressure area fluid in reduction centrifugal pump along main flow direction.
The rotor including cage-shaped structure of the axial-flow pump of the present invention can also be only made up of axle, blade and cylindrical shape mouse cage outer ring, and the outer surface Fixed Design of axle has blade, the top of described blade to fix to connect the inwall including mouse cage cylindrical shape outer ring.
Accompanying drawing explanation
Fig. 1 is the shield pump structure figure of band inducer；
Fig. 2 is to include inducer and the rotor structure figure of embedded cage-shaped structure；
Fig. 3 is the bearing support structure figure of band flow-guiding structure.
Detailed description of the invention
Introduce the detailed description of the invention of the canned motor pump inventing a kind of band inducer with reference to the accompanying drawings.The canned motor pump of band inducer as shown in Figure 1-Figure 3, forms including the stator 1 of belt coil winding, the rotor 2 with axial inducer and cage-shaped structure, centrifugal impeller 3, connecting shaft 4, centrifugal pump shell 5, bearing 6, the support of bearing 7, pump case front shroud 8, pump case back shroud 9, inlet honeycomb duct 10, base 11.Arranging the interlayer of non-magnet material between stator 1 and the rotor 2 with axial inducer and cage-shaped structure of described belt coil winding, the rotor 2 with axial inducer and cage-shaped structure is by axle 21, wheel hub 22, blade 23 and includes mouse cage cylindrical shape outer ring 24 and forms.The series connection of inducer 2, centrifugal impeller 3 is fixing on the same axis.The outer surface Fixed Design of the wheel hub 22 of rotor 2 has blade 23, the top of described blade 23 to fix to connect and include the inwall of mouse cage cylindrical shape outer ring 24, and the two ends of axle 21 are connected with spring bearing 6 respectively.Described spring bearing 6 support of bearing 7 and centrifugal pump shell 5 by band flow-guiding structure respectively supports.A series of annular or spiral groove is had vertically on the interlayer inner surface of non-magnet material.Pump case front shroud 8 inwall streamwise has a series of annular or spiral groove.Flow-guiding structure in the support of bearing 7 is a fixing guide-ring.The front end inlet porting mozzle 10 of the support of bearing 7.
During this canned motor pump energising work, alternating current produces rotating excitation field in the stator 1 of belt coil winding, the rotor 2 driving cage-shaped structure rotates, the blade 23 rotated on rotor drives fluid to enter in the rotor 2 of cage-shaped structure from the inlet honeycomb duct 10 guide-ring through the support of bearing 7 of band flow-guiding structure, fluid is constantly driven acting by blade 23 in the rotor 2 of cage-shaped structure, subsequently enter and centrifugal impeller 3 continues driven acting, eventually pass pump case 5 and flow out, enter tubing.
Compared with tradition canned motor pump, the inducer of rotor is integrated by this canned motor pump with motor designs, is equivalent to the centrifugal pump structure of band inducer, thus reduces the impact of canned motor pump cavitation erosion；Inducer uses the form of outer astragal cylinder, eliminates the tip leakage loss of axial impeller blade, also corresponds to add again one stage of compression before former centrifugal impeller, improve the compression ratio of entirety；The simultaneously ring-type or helical groove in non-water conservancy diversion interlayer and pump case front shroud, it is to avoid the leakage of fluid in pump, reduces leakage loss, improves the efficiency of canned motor pump；The fluid of this canned motor pump is flowed by motor internal, the heat sent when having taken away the work of part motor, improves operational efficiency and the safety of motor；The support of bearing with flow-guiding structure has a guiding function to the liquid flowing into impeller, reduces the entrance loss of part impeller, improves work efficiency.
Another way of realization of this canned motor pump is this canned motor pump fixed component to be processed on the exterior cylindrical surface of rotor and the front shroud outer surface of centrifugal impeller with the annular in rotary part gap or spiral groove structure.
The above, it it is only the detailed description of the invention of the present invention, not the technical scope of the present invention is imposed any restrictions, therefore any trickle amendment, equivalent variations and modification that above detailed description of the invention is made by every technical spirit according to the present invention, all still fall within the range of technical solution of the present invention.
Claims (10)
1. the canned motor pump of a band inducer, form including the stator 1 of belt coil winding, the rotor 2 with axial inducer and cage-shaped structure, centrifugal impeller 3, connecting shaft 4, centrifugal pump shell 5, bearing 6, the support of bearing 7, pump case front shroud 8, pump case back shroud 9, inlet honeycomb duct 10, base 11, inducer and centrifugal impeller are fixedly connected on same axle, it is characterized by that rotor is to be made up of containing the cylinder of cage-shaped structure and axial inducer inside, the two ends of axle connect bearing, and two bearings are supported by the support of bearing and centrifugal pump shell respectively.
The canned motor pump of band inducer the most according to claim 1, it is characterised in that the position of the motor of described canned motor pump axial inducer impeller inducer before centrifugal impeller, the stator of motor is a part for canned motor pump shell, and the rotor of motor is structure as a whole with inducer impeller inducer.
3. according to the canned motor pump motor of the band inducer impeller inducer described in claim 1 and 2, it is characterised in that described rotor include wheel hub, axial inducer blade, include cage-shaped structure cylindrical shape outer ring composition；It is an entirety that wheel hub, blade and cylindrical shape outer ring are radially sequentially connected with.
The canned motor pump of band inducer the most according to claim 1, it is characterised in that the shape of inducer blade can be traditional axial flow pump blade inner, it is also possible to be spiral helicine blade.
The canned motor pump of band inducer the most according to claim 1, it is characterised in that described inducer is connected for coaxial with centrifugal impeller.
The canned motor pump of band inducer the most according to claim 1, it is characterised in that the motor stator of described belt coil winding and the interlayer with arranging non-magnet material between axial inducer and the rotor of cage-shaped structure.
The interlayer of non-magnet material the most according to claim 6, it is characterised in that have a series of annular or spiral groove vertically on the interlayer of described non-magnet material periphery within it.
The canned motor pump of band inducer the most according to claim 1, it is characterised in that the internal face at pump case front shroud is machined with annular or spiral groove along main flow liquid stream direction.
The canned motor pump of band inducer the most according to claim 1, it is characterised in that the support of bearing is designed with flow-guiding structure, is connected with between the support of bearing and the stator of belt coil winding of this band flow-guiding structure.
The canned motor pump of band inducer the most according to claim 1, it is characterised in that the rotor of inducer
The embedded permanent magnet material supporting with belt coil winding stator of outer cylinder and structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510045952.XA CN105987008A (en) | 2015-01-29 | 2015-01-29 | Shielding pump with inducting wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510045952.XA CN105987008A (en) | 2015-01-29 | 2015-01-29 | Shielding pump with inducting wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105987008A true CN105987008A (en) | 2016-10-05 |
Family
ID=57035693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510045952.XA Pending CN105987008A (en) | 2015-01-29 | 2015-01-29 | Shielding pump with inducting wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105987008A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107246394A (en) * | 2017-05-23 | 2017-10-13 | 门立山 | A kind of mixed flow pump or fan for conveying high temperature fluid |
| CN111059057A (en) * | 2019-12-24 | 2020-04-24 | 浙江水利水电学院 | Anti-cavitation centrifugal pump and manufacturing method thereof |
| CN114109314A (en) * | 2021-11-25 | 2022-03-01 | 西南石油大学 | Device for monitoring, preventing and treating hydrate in throttle well |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2246777A (en) * | 1938-09-17 | 1941-06-24 | Claude G Bordeaux | Electric motor |
| US5158440A (en) * | 1990-10-04 | 1992-10-27 | Ingersoll-Rand Company | Integrated centrifugal pump and motor |
| US5692886A (en) * | 1993-12-08 | 1997-12-02 | Ebara Corporation | Canned motor pump having concentric bearings |
| CN101555886A (en) * | 2008-04-07 | 2009-10-14 | 上海凯士比泵有限公司 | Containment spray pump for nuclear power station |
| CN101672286A (en) * | 2008-09-09 | 2010-03-17 | 蒋明兴 | Diving pump without dynamic seal component |
| CN102497060A (en) * | 2011-11-30 | 2012-06-13 | 台州市百施度工贸有限公司 | Frequency conversion device mounting structure of submersible pump |
| CN104019043A (en) * | 2014-06-20 | 2014-09-03 | 李晨 | Mouse cage screw type compound molecular pump |
| CN104153998A (en) * | 2014-02-10 | 2014-11-19 | 刘延杰 | Straight-cylinder-shaft-type water pump |
| CN203978856U (en) * | 2014-01-17 | 2014-12-03 | 苏州泰格动力机器有限公司 | Axial flow magneto water pump |
-
2015
- 2015-01-29 CN CN201510045952.XA patent/CN105987008A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2246777A (en) * | 1938-09-17 | 1941-06-24 | Claude G Bordeaux | Electric motor |
| US5158440A (en) * | 1990-10-04 | 1992-10-27 | Ingersoll-Rand Company | Integrated centrifugal pump and motor |
| US5692886A (en) * | 1993-12-08 | 1997-12-02 | Ebara Corporation | Canned motor pump having concentric bearings |
| CN101555886A (en) * | 2008-04-07 | 2009-10-14 | 上海凯士比泵有限公司 | Containment spray pump for nuclear power station |
| CN101672286A (en) * | 2008-09-09 | 2010-03-17 | 蒋明兴 | Diving pump without dynamic seal component |
| CN102497060A (en) * | 2011-11-30 | 2012-06-13 | 台州市百施度工贸有限公司 | Frequency conversion device mounting structure of submersible pump |
| CN203978856U (en) * | 2014-01-17 | 2014-12-03 | 苏州泰格动力机器有限公司 | Axial flow magneto water pump |
| CN104153998A (en) * | 2014-02-10 | 2014-11-19 | 刘延杰 | Straight-cylinder-shaft-type water pump |
| CN104019043A (en) * | 2014-06-20 | 2014-09-03 | 李晨 | Mouse cage screw type compound molecular pump |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107246394A (en) * | 2017-05-23 | 2017-10-13 | 门立山 | A kind of mixed flow pump or fan for conveying high temperature fluid |
| CN111059057A (en) * | 2019-12-24 | 2020-04-24 | 浙江水利水电学院 | Anti-cavitation centrifugal pump and manufacturing method thereof |
| CN111059057B (en) * | 2019-12-24 | 2021-08-06 | 浙江水利水电学院 | Anti-cavitation centrifugal pump and manufacturing method thereof |
| CN114109314A (en) * | 2021-11-25 | 2022-03-01 | 西南石油大学 | Device for monitoring, preventing and treating hydrate in throttle well |
| CN114109314B (en) * | 2021-11-25 | 2022-06-17 | 西南石油大学 | Device for monitoring, preventing and treating hydrate in throttle well |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161005 |