CN1773121A - Pipe flowing electric pump - Google Patents
Pipe flowing electric pump Download PDFInfo
- Publication number
- CN1773121A CN1773121A CN 200410068010 CN200410068010A CN1773121A CN 1773121 A CN1773121 A CN 1773121A CN 200410068010 CN200410068010 CN 200410068010 CN 200410068010 A CN200410068010 A CN 200410068010A CN 1773121 A CN1773121 A CN 1773121A
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- Prior art keywords
- impeller
- pump
- stator
- pipe flowing
- rotor
- Prior art date
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- 238000004804 winding Methods 0.000 claims description 17
- 125000006850 spacer group Chemical group 0.000 claims description 13
- 230000037237 body shape Effects 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 8
- 238000005260 corrosion Methods 0.000 claims description 6
- 239000000411 inducer Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 239000007788 liquid Substances 0.000 description 19
- 230000005291 magnetic effect Effects 0.000 description 14
- 238000007599 discharging Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229910052775 Thulium Inorganic materials 0.000 description 4
- 230000008676 import Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- FRNOGLGSGLTDKL-UHFFFAOYSA-N thulium atom Chemical compound [Tm] FRNOGLGSGLTDKL-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to pipe-flow type electric pump. It includes centrifugal pump, drive motor, suction inlet, discharge body and external shell. The described centrifugal pump includes pump body, blade wheel and space ring-shaped guide vane. It is characterized by that the described drive motor is a wet motor, including cylinder body, stator, rotor, bearing, motor shaft and external shell. Besides, said invention also provides the concrete structure of said drive motor interior and concrete connection mode of the above-mentioned all the portions.
Description
(1) technical field
The present invention relates to a kind of pipe flowing electric pump, it is a kind of glandlesspump, mainly is applicable to clear water conveying occasion, is the upgrading type product of central air-conditioning system hot and cold water recycle pump, building feed water pump, also can be used for clean oily circulation occasion.
(2) background technique
Glandlesspump is owing to cancelled the rotation axis moving seal that conventional centrifugal pump has, has leak free advantage, be to carry toxic liquid (as toxin, unpleasant liquid), the visual plant of dangerous liquid (as corrosivity, explosivity, flammability and volatile liquid) and precious liquid can be widely used in numerous occasions of industries such as oil, chemical industry, pharmacy, food, building and refrigeration.Glandlesspump has canned motorpump and magnetic drive pump two classes.Canned motorpump is the centrifugal pump by its drive unit name; form by the stator of the impeller of centrifugal pump, the pump housing, axle, bearing, housing, motor and rotor etc.; be characterized in that impeller and rotor coaxial are installed in the pump housing; be provided with housing between the stator of motor and rotor, coil of stator of motor conductively-closed cover is protected and is transferred medium and isolates fully.Shielded electric-pump is the process pump of no gland seal device, the advantage that it has and does not have leakage, volume is little, running noise is little and applicability is wide.Magnetic drive pump also is by the centrifugal pump of its drive unit name, is made up of impeller, the pump housing, axle, bearing, housing and the permanent magnet clutch etc. of centrifugal pump.Characteristics are impeller and the coaxial installation of permanent magnetism internal rotor, and permanent-magnetic outer rotor and motor shaft connect firmly, and are provided with housing between permanent magnetism internal rotor and permanent-magnetic outer rotor, this structures shape magnetic drive pump irrotationality rotating shaft motive sealing, be complete leak free pump.
Canned motorpump and magnetic drive pump all are provided with housing, and the existence of housing makes the stator of motor and rotor clearance increase, and foucault current heating loss is inevitable, and this makes pump overall efficiency descend.The eddy current loss of metallic shield cover accounts for the 5%-20% of total transmission power.Long-time running is very important to the waste of the energy.Because the manufacturing process difficulty of housing is bigger, manufacture cost is higher relatively, and price is also often higher.In addition, also can produce noise during motor rotation, and supervene a large amount of heats; Magnetic drive pump has used permanent-magnet material, unit efficiency is a little more than canned motorpump, but because of housing is thin-wall part and is cantilever structure, can not be used for the higher occasion of flow system pressure, and owing to used the cause of permanent-magnet material, the pump resistance to high temperature is undesirable, and is relatively more responsive to the ferromagnetic particle in the fed sheet of a media.Application number is that 92219205.7 Chinese utility model patent is mentioned a kind of shielding submersible pump, and motor housing and motor housing cover, shell, delivery chamber are formed a cooling vortex street, vortex street one side setting drain opening are set.But this structural design has still adopted stator can, and the foucault current loss is inevitable, fail effectively shielding noise, disperse heat, and drain opening connects relative difficulty with pipeline.
(3) summary of the invention
Lower in order to overcome in the prior art electric pump efficient, effectively the deficiency of shielding noise, heat radiation the invention provides a kind of efficient height, can remove the pipe flowing electric pump of noise, heat radiation efficiently.
The technological scheme that the present invention solves its technical problem is:
Pipe flowing electric pump, comprise centrifugal pump, drive motor, suction port, discharge body, shell, described centrifugal pump comprises the pump housing, impeller, space annular stator, described drive motor is a wet type electric motor, comprise cylindrical shell, stator, rotor, bearing, arbor, end cap, described rotor and described impeller are installed on the described arbor, and arbor is by bearings; Anti-corrosion, insulated winding wire making that the winding of described stator adopts; The exhaust port and the described arbor coaxial arrangement of described suction port and discharge body, described being coated between outer barrel outer surface of stator and the described shell constitutes a cirque body shape fluid passage; Described end cap is fixed on the described cylindrical shell; Described impeller outside is provided with fixing space annular stator.
Further, described impeller and space annular stator is installed in the suction port place.
Further, described impeller and space annular stator is installed in and discharges the body place.
Further, described discharge body place and suction port place all are equipped with impeller and space annular stator.
Further, on the suction port position of described arbor inducer is housed, inducer is positioned at the impeller front portion.
Further again, described centrifugal pump is the multistage centrifugal pump that many group impellers and space annular stator constitute, and the impeller spacer is set between each impeller.
Further again, be fixed with permanent magnet on the described rotor.
Further, described permanent magnet is the 2-8 group, and described permanent magnet is along described rotor cross-section central shaft symmetric arrangement.
Because in the above-mentioned solution, the whole subduction of drive motor is in the middle of conveying liquid, do not use the housing of stator component, carry the ring-shaped liquid passage of liquid outside the motor stator parts to flow through, carry the shielding medium of liquid, played the effect of lubrication sliding bearing pair, cooling motor stator and rotor and shielding rotor vibration noise as cooling medium, rotor oscillation and the noise of lubricant medium, motor stator and the rotor of sliding bearing pair.
Beneficial effect of the present invention is: 1. do not use housing, fundamentally eliminated the foucault current loss of housing, can improve the efficient of electric pump; 2. the electromagnetic noise of motor, the running noise of rotor have been reduced; 3. utilize and carry liquid convection to conduct the temperature rise that the staor winding electromagnetic consumable causes, can improve the electromagnetic efficiency and the electrical properties of motor.4. director costss such as the time cost of pump, cost of material will be starkly lower than canned motorpump and magnetic drive pump.5. adopt permanent magnet to constitute the rotor magnetic circuit of motor, making built-in motor is efficient and the power factor that magneto can effectively improve electric pump, reduces electric energy loss.
(4) description of drawings
Fig. 1 is the vertical section structure schematic representation of embodiment's one described electric pump.
Fig. 2 is the vertical section structure schematic representation of embodiment's two described electric pumps.
Fig. 3 is the vertical section structure schematic representation of embodiment's three described electric pumps.
Fig. 4 is the vertical section structure schematic representation of embodiment's four described electric pumps.
Fig. 5 is the vertical section structure schematic representation of embodiment's six described electric pumps.
(5) embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Embodiment one
With reference to Fig. 1, pipe flowing electric pump is made up of the pump housing 1, impeller 2, space annular stator 3, bearing 4, arbor 5, motor stator 6, shell 7, rotor 8, discharge body 9, cylindrical shell 10, end cap 11, suction port 12.Rotor 8 and impeller 2 are installed on the arbor 5, and arbor 5 is supported by bearing 4.The pump housing 1 is provided with suction port 12, and space annular stator 3 is fixed on the pump housing 1, and space annular stator 3 and impeller 2 are installed in suction port 12 places.Discharging body 9 is connected with shell 7.Anti-corrosion, insulated winding wire making that the winding of motor stator 6 adopts, the cylindrical shell 10 of motor stator 6 is fixed on the shell 7, the outer surface of cylindrical shell 10 and shell 7 constitute the cirque body shape fluid passage of fed sheet of a media, motor stator 6 and rotor 8 all are immersed in the fed sheet of a media, and pump intake and exhaust port are coaxial arrangement.
The electric pump import is with after pipe-line for conveying liquids is communicated with, behind motor stator winding and power connection, under the effect of rotating magnetic field, rotor 8 rotates arbor 5, driving coaxial mounted impeller 2 rotates, the liquid at suction port 12 places is inhaled into impeller 2, after annular stator 3 superchargings of impeller 2 and space, exports through cirque body shape fluid passage that cylindrical shell 10 outer surfaces and shell 7 are formed with after discharging body 9.
Embodiment two
With reference to Fig. 2, pipe flowing electric pump, mainly form by the pump housing 1, impeller 2, space annular stator 3, bearing 4, arbor 5, motor stator 6, shell 7, rotor 8, discharge body 9, cylindrical shell 10, end cap 11, suction port 12 and impeller spacer 13, rotor 8, three impellers 2 and two impeller spacers 13 are installed on the arbor 5, two impeller spacers 13 are set between three impellers 2, arbor 5 is supported by bearing 4, three space annular stators 3 and three impellers 2 match, and impeller and idle loop shape stator are positioned at suction port 12 places.First order space annular stator is fixed on the pump housing 1, and other space annular stator is between the pump housing 1 and shell 7.Three impellers 2, three space annular stators 3 and two impeller spacers 13 are installed in suction port 12 places.Discharging body 9 is connected with shell 7, rotor 8 is by arbor 5, rotor core, sliver, end ring and thulium permanent magnet piece constitute, adopt 4 groups of thulium permanent magnet pieces of arranging along the cross-section center axisymmetric in the rotor 8, rotor magnetic circuit structural can be built-in structure (can be built-in tangential formula or built-in radial formula or built-in mixed), the winding of motor stator 6 adopts anti-corrosion, insulated winding wire is made, the cylindrical shell 10 of motor stator 6 is fixed on the shell 7, the outer surface of cylindrical shell 10 and shell 7 are formed the cirque body shape fluid passage of fed sheet of a media, the stator 6 of motor and rotor 8 all are immersed in the fed sheet of a media, the advancing of pump, outlet is coaxial arrangement.Obviously, impeller 2 and space annular stator 3 match in groups, and can connect is that multistage pump, Fig. 2 are one three grades multistage pump.
The electric pump import is with after pipe-line for conveying liquids is communicated with, behind motor stator winding and power connection, under the effect of rotating magnetic field, rotor 8 rotates arbor 5, driving coaxial mounted impeller 2 rotates, the liquid of inlet is inhaled into first stage impeller, successively by after first stage impeller, chopped-off head space annular stator, second level impeller, space, second level annular stator, third level impeller, the annular stator supercharging of third level space, export through cirque body shape fluid passage that the outer surface and the shell 7 of cylindrical shell 10 are formed with after discharging body 9.
Embodiment three
With reference to Fig. 3, pipe flowing electric pump mainly is made up of the pump housing 1, impeller 2, space annular stator 3, bearing 4, arbor 5, motor stator 6, shell 7, rotor 8, discharge body 9, cylindrical shell 10, end cap 11, impeller spacer 13, suction body 14 and connecting body 15.Rotor 8, three impellers 2 and two impeller spacers 13 are installed on the arbor 5, and two impeller spacers 13 are set between three impellers 2, and arbor 5 is supported by bearing 4, and impeller and stator are positioned at discharges the body place.Annular stator in first order space is fixed on the pump housing 1, other space annular stator the pump housing 1 with discharge between the body 9, and match with three impellers 2, three impellers 2, three space annular stators 3, two impeller spacers 13 are installed in discharge body 9 places.Suction body 14 is connected with shell 7, anti-corrosion, insulated winding wire making that the winding of motor stator 6 adopts, the cylindrical shell 10 of motor stator 6 is fixed in the shell 7, and the outer surface of cylindrical shell 10 and shell 7 are formed the cirque body shape fluid passage of fed sheet of a media, and the inlet/outlet of pump is a coaxial arrangement.Impeller 2 and space annular stator 3 match in groups, and can connect is that multistage pump, present embodiment are one three grades multistage pump, can increase the progression of impeller sets as required.
The electric pump import is with after pipe-line for conveying liquids is communicated with, behind motor stator winding and power connection, under the effect of rotating magnetic field, rotor 8 rotates arbor 5, driving coaxial mounted impeller 2 rotates, cirque body shape fluid passage, connecting body 15 that the liquid at suction body 14 places is formed through the outer surface and the shell 7 of cylindrical shell 10 flow into, be inhaled into first stage impeller, by after first stage impeller, chopped-off head space annular stator, second level impeller, space, second level annular stator, third level impeller, the annular stator supercharging of third level space, after discharging body 9, export successively.
Embodiment four
With reference to Fig. 4, pipe flowing electric pump is with embodiment three difference: the joint of wet type electric motor and pump, shell 7 directly and the pump housing 1 link.All the other structures are identical with embodiment three.
Embodiment five
Pipe flowing electric pump, 20 impellers and 18 impeller spacers are installed on the motor shaft, 20 impellers are equally divided into two groups, be separately positioned on the suction port place and discharge the body place, the impeller spacer is set between impeller and the impeller, stator is corresponding is equally divided into two groups for 20 spaces annular, respectively with the impeller pairing that is equally divided into two groups, rotor 8 is by arbor 5, rotor core, sliver, end ring and thulium permanent magnet piece constitute, adopt 6 groups of thulium permanent magnet pieces of arranging along the cross-section center axisymmetric in the rotor, rotor magnetic circuit structural is surface-type (can be a surperficial convex type or surperficial plug-in type) magnetic structure, and the winding of motor stator adopts anti-corrosion, insulated winding wire is made.Impeller and space annular stator match in groups, and can connect is multistage pump.
The electric pump import is with after pipe-line for conveying liquids is communicated with, behind motor stator winding and power connection, under the effect of rotating magnetic field, rotor rotates axle, drive coaxial mounted wheel rotation, the liquid of inlet is inhaled into first stage impeller, successively by first stage impeller, chopped-off head space annular stator, second level impeller, space, second level annular stator, the tenth grade of impeller, after the tenth grade of space annular stator supercharging, the annular flow channels of forming through the barrel outer surface of motor stator and shell, (this process is identical with embodiment two) liquid afterwards flows into the tenth one-level impeller, successively by the tenth one-level impeller, the tenth one-level space annular stator, the tenth sencond stage impeller, the tenth secondary space annular stator, the 20 grade of impeller, after the 20 grade of space annular stator supercharging, output (this process is identical with embodiment three) after discharging body.
Embodiment six
With reference to Fig. 5, pipe flowing electric pump, at suction port 12 places, an inducer 16 has been set up in the front portion of impeller 2 on the arbor 5, and this structure makes pipe flowing electric pump also can use under bad suction condition, and all the other structures are identical with embodiment one.
Claims (10)
1. pipe flowing electric pump, comprise centrifugal pump, drive motor, suction port, discharge body, shell, described centrifugal pump comprises the pump housing, impeller, space annular stator, it is characterized in that: described drive motor is a wet type electric motor, comprise cylindrical shell, stator, rotor, bearing, arbor, end cap, described rotor and described impeller are installed on the described arbor, and arbor is by bearings; Anti-corrosion, insulated winding wire making that the winding of described stator adopts; The exhaust port and the described arbor coaxial arrangement of described suction port and discharge body, described being coated between outer barrel outer surface of stator and the described shell constitutes a cirque body shape fluid passage; Described end cap is fixed on the described cylindrical shell; Described impeller outside is provided with fixing space annular stator.
2. pipe flowing electric pump as claimed in claim 1 is characterized in that: described impeller and space annular stator are installed in the suction port place.
3. pipe flowing electric pump as claimed in claim 1 is characterized in that: described impeller and space annular stator are installed in discharges the body place.
4. pipe flowing electric pump as claimed in claim 2 is characterized in that: described discharge body place and suction port place all are equipped with impeller and space annular stator.
5. as claim 1 or 2 or 4 described pipe flowing electric pumps, it is characterized in that: on the suction port position of described arbor inducer is housed, inducer is positioned at the impeller front portion.
6. as the described pipe flowing electric pump of one of claim 1-4, it is characterized in that: described centrifugal pump is provided with the impeller spacer for the multistage centrifugal pump of many group impellers and space annular stator formation between each impeller.
7, pipe flowing electric pump as claimed in claim 5 is characterized in that: described centrifugal pump is provided with the impeller spacer for the multistage centrifugal pump of many group impellers and space annular stator formation between each impeller.
8. as the described pipe flowing electric pump of one of claim 1-4, it is characterized in that: be fixed with permanent magnet on the described rotor.
9. pipe flowing electric pump as claimed in claim 8 is characterized in that: described permanent magnet is the 2-8 group, and described permanent magnet is along described rotor cross-section central shaft symmetric arrangement.
10. pipe flowing electric pump as claimed in claim 7 is characterized in that: be fixed with the permanent magnet that the 2-8 group is arranged along the cross-section center axisymmetric on the described rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410068010 CN1773121A (en) | 2004-11-08 | 2004-11-08 | Pipe flowing electric pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410068010 CN1773121A (en) | 2004-11-08 | 2004-11-08 | Pipe flowing electric pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1773121A true CN1773121A (en) | 2006-05-17 |
Family
ID=36760225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410068010 Pending CN1773121A (en) | 2004-11-08 | 2004-11-08 | Pipe flowing electric pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1773121A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104184260A (en) * | 2014-07-29 | 2014-12-03 | 江苏大学 | Wet type motor for high-speed mining submersible pump |
| CN106907330A (en) * | 2016-08-30 | 2017-06-30 | 合肥新沪屏蔽泵有限公司 | A kind of electronic cooling peripheral pump with water tank |
| CN107681822A (en) * | 2017-09-25 | 2018-02-09 | 湖南大学 | Efficient cryogenic motor for latent liquid type LNG pump |
| CN108286523A (en) * | 2017-12-24 | 2018-07-17 | 叶露微 | High-speed centrifugal pump directly driven by permanent magnet motor |
| CN113339274A (en) * | 2021-05-26 | 2021-09-03 | 浙江赛灵特泵业科技有限公司 | Low-vibration shielding type circulating pump |
| CN115929655A (en) * | 2022-12-21 | 2023-04-07 | 佳木斯电机股份有限公司 | High-efficient canned motor pump runner structure |
| JP2023165593A (en) * | 2022-05-06 | 2023-11-16 | 東莞市科徳精密制造有限公司 | Same-side and same-axis surface stator structure and motor convenient for processing |
-
2004
- 2004-11-08 CN CN 200410068010 patent/CN1773121A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104184260A (en) * | 2014-07-29 | 2014-12-03 | 江苏大学 | Wet type motor for high-speed mining submersible pump |
| CN104184260B (en) * | 2014-07-29 | 2016-08-17 | 江苏大学 | A kind of high speed mining diving pump wet type electric motor |
| CN106907330A (en) * | 2016-08-30 | 2017-06-30 | 合肥新沪屏蔽泵有限公司 | A kind of electronic cooling peripheral pump with water tank |
| CN107681822A (en) * | 2017-09-25 | 2018-02-09 | 湖南大学 | Efficient cryogenic motor for latent liquid type LNG pump |
| CN108286523A (en) * | 2017-12-24 | 2018-07-17 | 叶露微 | High-speed centrifugal pump directly driven by permanent magnet motor |
| CN108286523B (en) * | 2017-12-24 | 2021-08-03 | 汉宇集团股份有限公司 | High-speed centrifugal pump directly driven by permanent magnet motor |
| CN113339274A (en) * | 2021-05-26 | 2021-09-03 | 浙江赛灵特泵业科技有限公司 | Low-vibration shielding type circulating pump |
| JP2023165593A (en) * | 2022-05-06 | 2023-11-16 | 東莞市科徳精密制造有限公司 | Same-side and same-axis surface stator structure and motor convenient for processing |
| CN115929655A (en) * | 2022-12-21 | 2023-04-07 | 佳木斯电机股份有限公司 | High-efficient canned motor pump runner structure |
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