CN107859633A - A kind of high-efficiency corrosion-resistant canned motor pump - Google Patents
A kind of high-efficiency corrosion-resistant canned motor pump Download PDFInfo
- Publication number
- CN107859633A CN107859633A CN201711080207.4A CN201711080207A CN107859633A CN 107859633 A CN107859633 A CN 107859633A CN 201711080207 A CN201711080207 A CN 201711080207A CN 107859633 A CN107859633 A CN 107859633A
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- CN
- China
- Prior art keywords
- case
- pump
- rotor
- stator
- bearing
- 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
- 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
- F04D13/0606—Canned motor 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5806—Cooling the drive system
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/44—Protection against moisture or chemical attack; Windings specially adapted for operation in liquid or gas
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/193—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention discloses a kind of high-efficiency corrosion-resistant canned motor pump, including pump case nested from outside to inside successively, stator module, rotor assembly, bearing, axle；The stator module includes stator case, machine winding；The inwall of stator case forms the first cavity with outer wall, and machine winding injection is fixed in the first cavity；Rotor assembly includes pump impeller, magnet steel, rotor case, wherein magnet steel and rotor case injection molding；The inwall of rotor case forms the second cavity with outer wall, and magnet steel injection is fixed in the second cavity；It is connected again with pump impeller after the completion of rotor case injection, corresponding neck or pin hole is opened up on pump impeller and rotor case, realizes moment of torsion transmission of the rotor case to pump impeller；Bearing interference is arranged in rotor case；One end of the axle is fixed on stator case, and the other end is fixed in pump case.The present invention solves the problems, such as that corrosion-resistant canned motor pump cost is high in the prior art, efficiency is low, there is provided a kind of corrosion-resistant canned motor pump compact-sized, reliability is high.
Description
Technical field
The present invention relates to shielding pump technical field, more particularly to a kind of high-efficiency corrosion-resistant canned motor pump.
Background technology
Due to the characteristics of shield pump structure is compact, reliability is high, chemical industry Korrosionsmedium generally use canned motor pump is increased
Pressure conveying, ensures absolute No leakage, the parts material that canned motor pump contacts with Korrosionsmedium is both needed to meet corrosion-resistant requirement.
Traditional shielding pump motor installs corrosion resistant metallic shield set, isolation corrosion on motor stator and rotor
Property medium contacts with machine winding, magnet steel, to realize the purpose of the corrosion-resistant medium of pressure-increasing unit.In addition to cooling motor,
Electric machine casing afterbody sets outer circulating tube interface, after the high pressure cooling medium cooling motor of motor cavity is entered after pump, passes through
Outer circulating tube guides to pump inlet low pressure position, realizes the circulating cooling to motor.Due on motor stator and rotor all
Metallic shield set is mounted with, adds motor stator and rotor air gap, electric efficiency is relatively low.In addition, motor stator metal
Housing and rotor metallic shield, which are put, can produce certain eddy current loss, reduce further electric efficiency.
It is on the one hand thin in order to not make too many, the motor stator housing generally use thin wall type structure that electric efficiency reduces
Wall-shaped housing difficulty of processing is larger, is added significantly to canned motor pump cost；On the other hand, housing bearing capacity is limited to, is shielded
Covering pump boost pressure can not be too high, limits the use range of canned motor pump.
Higher occasion is required in installing space size and weight limitation, it is desirable to the higher design speed of pumping is shielded, with
Canned motor pump size and weight are reduced, and improves shield electric machine design speed, housing turbine loss is significantly increased, and shields the efficiency of pump
Drastically lower, add use cost.
In summary, the canned motor pump, in practice in the presence of it is inconvenient the problem of, it is therefore necessary to improved.
The content of the invention
The purpose of the present invention is the pressure-increasing unit for Korrosionsmedium, solves corrosion-resistant canned motor pump cost in the prior art
A kind of high, the problem of efficiency is low, there is provided the corrosion-resistant canned motor pump that structure is tight, reliability is high.
To achieve the above object, using following technical scheme：
A kind of high-efficiency corrosion-resistant canned motor pump, including axle nested from the inside to the outside successively, bearing, rotor assembly, stator module,
Pump case；The stator module includes stator case, machine winding, both injection moldings；The inwall of the stator case with it is outer
Wall forms the first cavity, and machine winding injection is fixed in the first cavity；The rotor assembly includes pump impeller, magnet steel, rotor case
Body, wherein magnet steel and rotor case injection molding；The inwall of the rotor case forms the second cavity with outer wall, and magnet steel injection is solid
It is scheduled in the second cavity；It is connected, is opened up on pump impeller and rotor case correspondingly with pump impeller again after the completion of the rotor case injection
Neck or pin hole, realize moment of torsion transmission of the rotor case to pump impeller；The bearing interference is arranged in rotor case；Institute
The one end for stating axle is fixed on stator case, and the other end is fixed in pump case.
It is preferred that form machine air gap between the stator case and rotor case；Backflow is opened up on the stator module
Hole；The exit portion cooling medium of the pump impeller passes through machine air gap, then by return port and axis center hole, returns to pump impeller and enter
Mouthful, into pump impeller, realize the circulating cooling to motor.
It is preferred that the pump case, pump impeller, stator case, rotor case are molded into using corrosion-resistant high polymer material
Type；The machine winding is moulded in inside stator case, and magnet steel is moulded in inside rotor case, is not connect with Korrosionsmedium
Touch.
It is preferred that the canned motor pump also includes preceding thrust ring, rear thrust ring；The preceding thrust ring interference is arranged on pump case
Close pump impeller one end；Thrust ring is arranged on remote pump impeller one end of axle after described.
It is preferred that the endoporus of the bearing opens up spiral shape cooling bath；The spiral shape cooling bath opens up direction and axle
The direction of rotation held is opposite.
It is preferred that some radial slots are set on the end face of thrust ring after described；The part flowed through in the machine air gap is cold
But medium enters the spiral shape cooling bath of bearing by the radial slot, and as bearing rotates, cooling medium is cooled down by spiral shape
Groove suction supercharging, ensure that the cooling medium of abundance enters spiral shape cooling bath so as to sufficiently cool lubrication bearing.
It is preferred that the end interference of the axle is fixed on stator case, not with bearing synchronous rotary.
Using such scheme, the beneficial effects of the invention are as follows：
1) cost is low：For tradition shielding pump motor using metallic shield set protection, metallic shield set processing cost is higher, draws high
Canned motor pump production cost；In order to improve the class of insulation of the voltage endurance capability of housing and machine winding, generally in electric machine casing
The material such as infusion epoxy resin in space between machine winding, processing technology is complicated, and cost is higher；The present invention motor around
For the direct injection molding of group in macromolecule resistant material, macromolecule resistant material coats machine winding completely, it is not necessary to shields
Set is covered, processing technology is simple, and cost is low；
2) efficiency high：Machine winding and magnet steel are directly injection-moulded in high polymer material, the air gap between stator and rotor compared with
Small, electric efficiency is higher；In addition, without metallic shield set between machine winding and magnet steel, in the absence of extra eddy current loss, shielding
The efficiency of pump is high；
3) it is compact-sized：The presence of the larger air gap of traditional canned motor pump and housing adds the power attenuation hair of motor
Heat is, it is necessary to the pump conveying cooling medium of larger flow cools down motor, in order to which motor cooling medium exchanges heat and ensures sufficient cold
But flow, circulation pipe and heat-exchanger rig, shield pump structure complexity are set outside canned motor pump；The present invention is flowed back using axis center hole
The extra parts such as mode, no outer circulating tube, it is simple and compact for structure.
Brief description of the drawings
Fig. 1 is the profile of the present invention；
Fig. 2 is the interior circulation loop diagrammatic cross-section of the present invention；
Wherein, accompanying drawing identifier declaration：
1-pump case, 2-stator module,
3-rotor assembly, 4-bearing,
5-axle, 6-machine air gap,
7-preceding thrust ring, 8-rear thrust ring,
21-stator case, 22-machine winding,
23-return port, 31-pump impeller,
32-magnet steel, 33-rotor case,
51-axis center hole.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Referring to figs. 1 to shown in 2, the present invention provides a kind of high-efficiency corrosion-resistant canned motor pump, including nested from the inside to the outside successively
Axle 5, bearing 4, rotor assembly 3, stator module 2, pump case 1；The stator module 2 includes stator case 21, machine winding 22,
Both injection moldings；The inwall of the stator case 21 forms the first cavity with outer wall, and the injection of machine winding 22 is fixed on first
In cavity；The rotor assembly 3 includes pump impeller 31, magnet steel 32, rotor case 33, and wherein magnet steel 32 is molded into rotor case 33
Type；The inwall of the rotor case 33 forms the second cavity with outer wall, and the injection of magnet steel 32 is fixed in the second cavity；The rotor
Housing 33 is connected with pump impeller 31 again after the completion of being molded, and corresponding neck or pin are opened up on pump impeller 31 and rotor case 33
Hole, realize moment of torsion transmission of the rotor case 33 to pump impeller 31；The interference of bearing 4 is arranged in rotor case 33；The axle 5
One end is fixed on stator case 21, and the other end is fixed in pump case 1.
Wherein, machine air gap 6 is formed between the stator case 21 and rotor case 33；Opened up on the stator module 2
Return port 23；The exit portion cooling medium of the pump impeller 31 passes through machine air gap 6, then passes through return port 23 and axis center hole
51, the import of pump impeller 31 is returned to, into pump impeller 31, realizes the circulating cooling to motor.The pump case 1, pump impeller 31, stator case
21st, rotor case 33 uses corrosion-resistant high polymer material injection molding；The machine winding 22 is moulded in stator case 21
Portion, magnet steel 32 are moulded in inside rotor case 33, not contacted with Korrosionsmedium.
The canned motor pump also includes preceding thrust ring 7, rear thrust ring 8；The interference of preceding thrust ring 7 is arranged on pump case 1
Close to the one end of pump impeller 31；Thrust ring 8 is arranged on one end of remote pump impeller 31 of axle 5 after described.The endoporus of the bearing 4 opens up spiral
Shape cooling bath；The spiral shape cooling bath to open up direction opposite with the direction of rotation of bearing 4.The end face of thrust ring 8 after described
It is upper that some radial slots are set；The part cooling medium flowed through in the machine air gap 6 enters the spiral shell of bearing 4 by the radial slot
Shape cooling bath is revolved, as bearing 4 rotates, cooling medium is aspirated by spiral shape cooling bath and is pressurized, and ensures that the cooling medium of abundance enters
Enter spiral shape cooling bath so as to sufficiently cool lubrication bearing 4.The end interference of the axle 5 is fixed on stator case 21, not with
The synchronous rotary of bearing 4.
Operation principle of the present invention：
Axle 5, bearing 4, rotor assembly 3, stator module 2, pump case 1 are embedded in corresponding outer part from the inside to the outside successively
In endoporus, i.e., axle 5 is embedded in the endoporus of bearing 4, bearing 4 is embedded in the endoporus of rotor assembly 3, rotor assembly 3 is embedded in stator
Endoporus, the rotor assembly 2 of component 2 are embedded in the endoporus of pump case 1.
As shown in figure 1, the injection of machine winding 22 is fixed in stator case 21, the injection of magnet steel 32 is fixed on rotor case 33
In, the thickness of the inwall of injection time control stator case 21 and the outer wall of rotor case 33, ensure that machine winding 22 and magnet steel 32 are complete
Full cladding isolation, the gap being unlikely to again between machine winding 22 and magnet steel 32 are excessive.Rotor case 33 be molded after the completion of again with
Pump impeller 31 is connected, and corresponding neck or pin hole are opened up on pump impeller 31 and rotor case 33, realizes rotor case 33 to pump
The moment of torsion transmission of wheel 31.The interference of bearing 4 is arranged in the endoporus of rotor assembly 3, and the preceding interference of thrust ring 7 is arranged in pump case 1.
One end of axle 5 is fixed on stator case 21, and other end is fixed in pump case 1, and when shielding pump work, axle 5 is fixed,
Rotor assembly 3 is with the synchronous rotary of bearing 4.
Multiple radial slots are provided with the end face of rear thrust ring 8, the part cooling medium flowed through from machine air gap 6 leads to
The radial slot is crossed into the spiral shape cooling bath in the endoporus of bearing 4, spiral shape cooling bath direction and the direction of rotation phase of bearing
Instead, as bearing 4 rotates, cooling medium is aspirated by spiral shape cooling bath and is pressurized, and ensures that the cooling medium of abundance enters spiral shape
The sufficiently cool lubrication bearing 4 of cooling bath.
As shown in Fig. 2 the exit portion high pressure cooling medium of pump impeller 31 enters machine air gap 6, power of motor loss production is taken away
Raw heat, then by the return port 23 on stator case 21, into axis center hole 51, eventually pass back to the import department of pump impeller 31
Position, realizes the circulating cooling to motor.
These are only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
All any modification, equivalent and improvement made within principle etc., should be included in the scope of the protection.
Claims (7)
- A kind of 1. high-efficiency corrosion-resistant canned motor pump, it is characterised in that including axle nested from the inside to the outside successively, bearing, rotor assembly, Stator module, pump case；The stator module includes stator case, machine winding, both injection moldings；The stator case Inwall forms the first cavity with outer wall, and machine winding injection is fixed in the first cavity；The rotor assembly includes pump impeller, magnetic Steel, rotor case, wherein magnet steel and rotor case injection molding；The inwall of the rotor case forms the second cavity with outer wall, Magnet steel injection is fixed in the second cavity；It is connected again with pump impeller after the completion of the rotor case injection, in pump impeller and rotor case On open up corresponding to neck or pin hole, realize moment of torsion transmission of the rotor case to pump impeller；The bearing interference, which is arranged on, to be turned In sub- housing；One end of the axle is fixed on stator case, and the other end is fixed in pump case.
- 2. high-efficiency corrosion-resistant canned motor pump according to claim 1, it is characterised in that the stator case and rotor case it Between form machine air gap；Return port is opened up on the stator module；The exit portion cooling medium of the pump impeller passes through between motor Gap, then by return port and axis center hole, return to pump impeller import, into pump impeller, realize the circulating cooling to motor.
- 3. high-efficiency corrosion-resistant canned motor pump according to claim 1, it is characterised in that the pump case, pump impeller, stator case Body, rotor case use corrosion-resistant high polymer material injection molding；The machine winding is moulded in inside stator case, magnet steel It is moulded in inside rotor case, is not contacted with Korrosionsmedium.
- 4. high-efficiency corrosion-resistant canned motor pump according to claim 2, it is characterised in that the canned motor pump also includes preceding thrust Ring, rear thrust ring；The preceding thrust ring interference is arranged on close pump impeller one end of pump case；Thrust ring is arranged on axle after described Away from pump impeller one end.
- 5. high-efficiency corrosion-resistant canned motor pump according to claim 4, it is characterised in that the endoporus of the bearing opens up spiral shape Cooling bath；The spiral shape cooling bath to open up direction opposite with the direction of rotation of bearing.
- 6. high-efficiency corrosion-resistant canned motor pump according to claim 5, it is characterised in that set after described on the end face of thrust ring Some radial slots；The spiral shape that the part cooling medium flowed through in the machine air gap enters bearing by the radial slot cools down Groove, as bearing rotates, cooling medium is aspirated by spiral shape cooling bath and is pressurized, and ensures that the cooling medium of abundance is cold into spiral shape But groove is so as to sufficiently cool lubrication bearing.
- 7. high-efficiency corrosion-resistant canned motor pump according to claim 1, it is characterised in that the end interference of the axle is fixed on fixed On sub- housing, not with bearing synchronous rotary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711080207.4A CN107859633A (en) | 2017-11-06 | 2017-11-06 | A kind of high-efficiency corrosion-resistant canned motor pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711080207.4A CN107859633A (en) | 2017-11-06 | 2017-11-06 | A kind of high-efficiency corrosion-resistant canned motor pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107859633A true CN107859633A (en) | 2018-03-30 |
Family
ID=61700948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711080207.4A Pending CN107859633A (en) | 2017-11-06 | 2017-11-06 | A kind of high-efficiency corrosion-resistant canned motor pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107859633A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109054363A (en) * | 2018-07-09 | 2018-12-21 | 浙江方鑫机电有限公司 | A kind of canned motor pump pump housing and its processing method |
| CN109404295A (en) * | 2018-12-19 | 2019-03-01 | 成都富临精工电子电器科技有限公司 | Circulating cooling electronic water pump in a kind of anti-clogging |
| CN109639026A (en) * | 2018-11-13 | 2019-04-16 | 江苏大学镇江流体工程装备技术研究院 | A kind of canned motor pump motor multifunctional back shroud and the shielding pump motor with it |
| CN109980833A (en) * | 2019-04-16 | 2019-07-05 | 哈尔滨理工大学 | A kind of oil-filled submersible motor |
Citations (6)
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|---|---|---|---|---|
| CN2482597Y (en) * | 2001-06-29 | 2002-03-20 | 中国石油天然气集团公司 | Magnetic drive corrosion resistant fluorine plastic liner pump |
| CN203206066U (en) * | 2013-03-08 | 2013-09-18 | 珠海格力电器股份有限公司 | direct current plastic package motor |
| CN203201816U (en) * | 2013-01-31 | 2013-09-18 | 周拥军 | Minitype brushless water pump |
| JP2014118950A (en) * | 2012-12-19 | 2014-06-30 | Panasonic Corp | Pump |
| CN205559350U (en) * | 2016-04-21 | 2016-09-07 | 浙江远邦流体科技有限公司 | Can carry particulate medium's magnetic drive pump |
| CN107228074A (en) * | 2017-07-31 | 2017-10-03 | 广东威灵电机制造有限公司 | Electronic water pump |
-
2017
- 2017-11-06 CN CN201711080207.4A patent/CN107859633A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2482597Y (en) * | 2001-06-29 | 2002-03-20 | 中国石油天然气集团公司 | Magnetic drive corrosion resistant fluorine plastic liner pump |
| JP2014118950A (en) * | 2012-12-19 | 2014-06-30 | Panasonic Corp | Pump |
| CN203201816U (en) * | 2013-01-31 | 2013-09-18 | 周拥军 | Minitype brushless water pump |
| CN203206066U (en) * | 2013-03-08 | 2013-09-18 | 珠海格力电器股份有限公司 | direct current plastic package motor |
| CN205559350U (en) * | 2016-04-21 | 2016-09-07 | 浙江远邦流体科技有限公司 | Can carry particulate medium's magnetic drive pump |
| CN107228074A (en) * | 2017-07-31 | 2017-10-03 | 广东威灵电机制造有限公司 | Electronic water pump |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109054363A (en) * | 2018-07-09 | 2018-12-21 | 浙江方鑫机电有限公司 | A kind of canned motor pump pump housing and its processing method |
| CN109639026A (en) * | 2018-11-13 | 2019-04-16 | 江苏大学镇江流体工程装备技术研究院 | A kind of canned motor pump motor multifunctional back shroud and the shielding pump motor with it |
| CN109404295A (en) * | 2018-12-19 | 2019-03-01 | 成都富临精工电子电器科技有限公司 | Circulating cooling electronic water pump in a kind of anti-clogging |
| CN109980833A (en) * | 2019-04-16 | 2019-07-05 | 哈尔滨理工大学 | A kind of oil-filled submersible motor |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20180330 |