CN113691080B - Canned type formula of soaking permanent magnetism frequency conversion deep-well pump motor structure - Google Patents
Canned type formula of soaking permanent magnetism frequency conversion deep-well pump motor structure Download PDFInfo
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- CN113691080B CN113691080B CN202111014007.5A CN202111014007A CN113691080B CN 113691080 B CN113691080 B CN 113691080B CN 202111014007 A CN202111014007 A CN 202111014007A CN 113691080 B CN113691080 B CN 113691080B
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- 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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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/132—Submersible electric motors
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- 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
- H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2205/00—Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
- H02K2205/09—Machines characterised by drain passages or by venting, breathing or pressure compensating means
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a sealed immersion permanent magnet frequency conversion deep well pump motor structure, which comprises: the stator sealing ring is arranged between the front cover of the motor and the rear cover of the motor, a stator filling and sealing cavity is formed between the outer wall of the stator sealing ring and the inner wall of the casing, the winding stator is arranged in the stator filling and sealing cavity, the lower flange of the motor is arranged at the bottom of the rear cover of the motor, the rotor sealing ring is arranged on the outer side of the rotor and positioned on the inner side of the stator sealing ring, and the pressure diaphragm is arranged at the bottom of the lower flange of the motor. Through the mode, the sealed immersed permanent magnet variable frequency deep well pump motor structure disclosed by the invention is shielded and sealed, is cooled by cooling water, and utilizes the pressure diaphragm to maintain the balance of internal and external pressure differences in a deep well, so that silt is prevented from entering the motor.
Description
Technical Field
The invention relates to the field of water pump motors, in particular to a sealed immersed permanent magnet variable-frequency deep-well pump motor structure.
Background
The existing deep well multistage pump motor mostly adopts a single-phase induction motor, the efficiency is lower, the motor volume is larger, the function is single, and the problem also exists simultaneously:
1. the motor structure usually adopts oil cooling and mechanical sealing, and once the mechanical sealing fails, the underground water source is easily polluted;
2. the underground water source generally contains fine sand, so that mechanical seal is easy to damage, sand enters the motor, the motor is blocked, normal use of the water pump is affected, and improvement is needed.
Disclosure of Invention
The invention mainly solves the technical problem of providing a sealed immersed permanent magnet variable frequency deep well pump motor structure which is used for water cooling, improves the sealing effect and improves the durability.
In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides a canned type formula of soaking permanent magnetism frequency conversion deep-well pump motor structure, includes: the stator sealing ring is arranged in the stator filling and sealing cavity, the lower motor flange is arranged at the bottom of the rear motor cover, the upper motor flange is arranged at the top of the front motor cover, the rotating shaft is arranged in the shell and extends to the upper motor flange, the rotor is arranged on the rotating shaft, the rotor sealing ring is sleeved on the outer side of the rotor and is positioned on the inner side of the stator sealing ring, and the pressure diaphragm is arranged at the bottom of the lower motor flange, and cooling water is arranged in the stator sealing ring.
In a preferred embodiment of the invention, a diaphragm pressing plate is arranged at the bottom of the lower flange of the motor and positioned below the pressure diaphragm.
In a preferred embodiment of the invention, the diaphragm press plate is provided with a vent hole positioned below the pressure diaphragm.
In a preferred embodiment of the invention, the rotor seal ring has a length greater than the length of the rotor.
In a preferred embodiment of the present invention, the lower flange of the motor is provided with a thrust bearing, the thrust bearing is provided with an adjusting block located below the rotor, and the rotating shaft is provided with a limiting ring located above the rotor.
In a preferred embodiment of the present invention, the pressure diaphragm includes a planar ring portion, a cylindrical body portion, and a concave diaphragm portion, the concave diaphragm portion is disposed on the top of the cylindrical body portion, the planar ring portion is disposed on the bottom of the outer circle of the cylindrical body portion, and the planar ring portion, the cylindrical body portion, and the concave diaphragm portion are made of an integrated soft plastic structure.
In a preferred embodiment of the present invention, a stepped hole is formed in the lower motor flange, the cylinder portion and the concave diaphragm portion are located in the stepped hole, the bottom of the rotating shaft extends into the stepped hole, a first sealing ring is arranged between an outer circle of the lower motor flange and an inner hole of the rear motor cover, and a second sealing ring is arranged between an inner hole of the front motor cover and an outer circle of the upper motor flange.
In a preferred embodiment of the present invention, a first sealant is filled in the stator filling cavity, a second sealant is filled in the rotor sealing ring to immerse two ends of the rotor, a filling hole is formed in the rear cover of the motor, the diaphragm pressing plate penetrates through the lower flange of the motor by using a first screw and is connected with the rear cover of the motor, and a second screw is arranged on the upper flange of the motor and is connected with the front cover of the motor.
In a preferred embodiment of the invention, the motor front cover further comprises a wiring plug, the wiring plug is provided with a wiring socket in the motor front cover, the wiring plug is plugged with the wiring socket, the motor front cover is provided with a wiring board corresponding to the wiring plug, the wiring board is connected with the motor front cover by adopting a third screw, and the wiring socket is connected with the motor front cover by adopting a fourth screw.
In a preferred embodiment of the present invention, a sealing member sleeved on the rotating shaft is disposed in the upper motor flange, a pressure ring located above the sealing member is disposed at the top of the upper motor flange, and a rubber sealing ring located above the pressure ring is disposed on the rotating shaft.
The invention has the beneficial effects that: the invention provides a sealed immersed permanent magnet variable frequency deep well pump motor structure, which is characterized in that a stator sealing ring and a rotor sealing ring are specially designed for shielding and sealing, and the stator sealing ring and the rotor sealing ring are convenient for glue filling and sealing, so that cooling by cooling water is facilitated, the upward deformation of a concave membrane part is realized under the water pressure action of a pressure diaphragm in a deep well, the balance of internal and external pressure differences is maintained, silt is prevented from entering the motor, the protection on the motor is enhanced, and the durability is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic structural diagram of a preferred embodiment of a sealed submersible permanent magnet variable frequency deep well pump motor structure according to the present invention;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a schematic view of the mounting structure of the pressure diaphragm of FIG. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1 to 3, an embodiment of the invention includes:
the sealed submersible permanent magnet frequency conversion deep well pump motor structure shown in fig. 1 and 2 comprises: winding stator 15, the apparatus further comprises a rotating shaft, stator sealing ring 14, rotor 12, rotor sealing ring 13, motor front cover 9, casing 16, motor upper flange 7, motor rear cover 19, motor lower flange 21, pressure diaphragm 22 and wiring plug 5, motor front cover 9 sets up the inner chamber top at casing 16, motor rear cover 19 sets up the inner chamber bottom at casing 16, stator sealing ring 14 sets up between motor front cover 9 and motor rear cover 19, during the equipment, fix motor front cover 9 and motor rear cover 19 at the both ends of casing 16 through the welding mode earlier, again weld stator sealing ring 14 both ends respectively on motor front cover 9 and motor rear cover 19.
Form stator embedment cavity between 14 outer walls of stator sealing ring and the 16 inner walls of casing, winding stator 15 sets up in stator embedment cavity, and the embedment has first sealed glue in the stator embedment cavity, in this embodiment, is provided with the encapsulating hole behind the motor on the lid 19, and lid 19 welding is behind motor protecgulum 9 and the motor behind the inner chamber both ends of casing 16, pours into first sealed glue into through the encapsulating hole in to the embedment cavity, carries out winding stator 15's sealed through first sealed glue.
In this embodiment, the lower motor flange 21 is disposed at the bottom of the rear motor cover 19 for easy assembly and disassembly, and a first sealing ring 20 is disposed between the outer circle of the lower motor flange 21 and the inner hole of the rear motor cover 19 for sealing the joint. The motor upper flange 7 is arranged at the top of the motor front cover 9, a plurality of second screws 1 connected with the motor front cover 9 are arranged on the motor upper flange 7, the structure is firm, and a second sealing ring 8 is arranged between an inner hole of the motor front cover 9 and the outer circle of the motor upper flange 7 to seal the joint.
The rotating shaft 27 is arranged in the casing 16 and extends to the upper side of the motor flange 7, the sealing element 6 sleeved on the rotating shaft 27 is arranged in the motor flange 7, and in this embodiment, the sealing element 6 can adopt a framework oil seal or other sealing mechanism to ensure the sealing effect. The top is provided with the clamping ring 4 that is located 6 tops of sealing member, carries out the spacing of sealing member 6, is provided with the rubber seal ring 2 that is located 4 tops of clamping ring on the pivot 27, when lieing in the water pump and connecting, and rubber seal ring 2 is oppressed by the water pump lower cover, forms first sand prevention ring, and clamping ring 4 forms the second and says and prevent sand ring, and sealing member 6 forms the third and says and prevent sand ring, has promoted greatly and has prevented that silt from getting into the inboard effect of stator seal ring 14.
With rotor 12 pressure equipment on pivot 27, rotor sealing ring 13 cover is established in the rotor 12 outside and is located stator sealing ring 14 inboard, in this embodiment, the embedment has the sealed second of submergence rotor 12 both ends to seal in the rotor sealing ring 13, and rotor sealing ring 13 length is greater than the length of rotor 12, is favorable to the sealed submergence of gluing to rotor 12 both ends of second, realizes waterproof sealing after the solidification.
As shown in fig. 1, a thrust bearing 18 is provided on the motor lower flange 21, an adjusting block 17 located below the rotor is provided on the thrust bearing 18 to support the rotation of the rotor 12, and a limit ring 11 located above the rotor 12 is provided on the rotating shaft 27 to perform axial limit.
Be provided with the shoulder hole in the flange 21 under the motor, in the pivot 27 bottom extended to the shoulder hole, set up pressure diaphragm 22 in flange 21 bottom under the motor, carry out the sealed of shoulder hole, be provided with the cooling water in stator sealing ring 14, carry out the lubrication and the cooling of each part rotation process through the cooling water.
In this embodiment, the pressure diaphragm 22 includes a flat ring part 223, a barrel 222 and a concave diaphragm part 221, the concave diaphragm part 221 is disposed on the top of the barrel 222, the flat ring part 223 is disposed on the bottom of the outer circle of the barrel 222, and the flat ring part 223, the barrel 222 and the concave diaphragm part 221 are made of an integrated soft plastic structure, so that the production is convenient.
As shown in fig. 3, the cylinder 222 and the concave diaphragm portion 221 are located in the stepped hole, the concave surface of the concave diaphragm portion 221 faces upward and faces the rotating shaft 27, the vent hole 26 located below the pressure diaphragm 22 is arranged on the diaphragm pressure plate 23, and under the action of water pressure in the deep well, the concave diaphragm portion 221 deforms upward, the concave surface can gradually protrude upward, so that the balance of the pressure difference between the inside and the outside of the casing 16 is maintained, silt is further prevented from entering the motor, and the protection of the motor is enhanced.
In this embodiment, the diaphragm pressing plate 23 located below the pressure diaphragm 22 is disposed at the bottom of the lower motor flange 21, and the flat diaphragm portion 223 is pressed and fixed without affecting the elastic deformation of the concave diaphragm portion 221. The diaphragm pressing plate 23 penetrates through the lower motor flange 21 by adopting a first screw 24 and is connected with the rear motor cover 19, and meanwhile, the lower motor flange 21 and the diaphragm pressing plate 23 are fixed.
As shown in fig. 1, a connection socket 10 is arranged in the motor front cover 9, in this embodiment, the connection socket 10 is located at the bottom of the motor front cover 9 and extends upward, as shown in fig. 2, the connection socket 10 is connected with the bottom of the motor front cover 9 by using a fourth screw 25, and the structure is stable. Wiring plug 5 pegs graft with connection socket 10, conveniently supplies power, is provided with the line ball board 3 that corresponds with wiring plug 5 on the motor protecgulum 9, and line ball board 3 adopts the third screw to be connected with motor protecgulum 9, carries out pressing of wiring plug 5 admittedly, avoids the pine to take off to promote water-proof effects.
In addition, the third screw can be replaced by 2 second screws 1, and no additional screw is needed to be installed, so that the cost is reduced. In this embodiment, as shown in fig. 2, the second screw 1 is a double-headed screw, so as to be conveniently connected and fixed with the water pump.
In conclusion, the sealed water-immersed permanent magnet variable-frequency deep well pump motor structure provided by the invention is lubricated and cooled by cooling water, the sealing effect is improved, the stability of use in a deep well is ensured, and the service life is prolonged.
The above are only embodiments of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are also included in the scope of the present invention.
Claims (7)
1. The utility model provides a canned type formula of soaking permanent magnetism frequency conversion deep-well pump motor structure which characterized in that includes: the stator sealing ring is arranged in the stator filling and sealing cavity, the lower motor flange is arranged at the bottom of the rear motor cover, the upper motor flange is arranged at the top of the front motor cover, the rotating shaft is arranged in the shell and extends to the upper motor flange, the rotor is arranged on the rotating shaft, the rotor sealing ring is sleeved on the outer side of the rotor and is positioned on the inner side of the stator sealing ring, and the pressure diaphragm is arranged at the bottom of the lower motor flange, the improved motor sealing structure is characterized in that cooling water is arranged in the stator sealing ring, the motor front cover and the motor rear cover are welded and fixed with the shell respectively, the two ends of the stator sealing ring are welded and fixed with the motor front cover and the motor rear cover respectively, a diaphragm pressing plate located below the pressure diaphragm is arranged at the bottom of the motor lower flange, an air vent located below the pressure diaphragm is arranged on the diaphragm pressing plate, a first sealant is filled in a stator filling and sealing cavity, a second sealant for immersing the two ends of a rotor is filled in the rotor sealing ring, a sealant filling hole is formed in the motor rear cover, the diaphragm pressing plate penetrates through the motor lower flange by a first screw and is connected with the motor rear cover, and a second screw connected with the motor front cover is arranged on the motor upper flange.
2. The sealed submersible permanent magnet variable frequency deep well pump motor structure of claim 1, wherein the rotor seal ring length is greater than the rotor length.
3. The sealed submersible permanent magnet frequency conversion deep well pump motor structure according to claim 1, wherein a thrust bearing is arranged on the lower flange of the motor, an adjusting block positioned below the rotor is arranged on the thrust bearing, and a limiting ring positioned above the rotor is arranged on the rotating shaft.
4. The sealed submersible permanent magnet frequency conversion deep well pump motor structure according to claim 1, wherein the pressure diaphragm comprises a flat diaphragm portion, a barrel portion and a concave diaphragm portion, the concave diaphragm portion is arranged at the top of the barrel portion, the flat diaphragm portion is arranged at the bottom of the outer circle of the barrel portion, and the flat diaphragm portion, the barrel portion and the concave diaphragm portion are of an integrated soft plastic structure.
5. The sealed submersible permanent magnet frequency conversion deep well pump motor structure according to claim 4, wherein a stepped hole is formed in the motor lower flange, the cylinder body part and the concave diaphragm part are located in the stepped hole, the bottom of the rotating shaft extends into the stepped hole, a first sealing ring is arranged between the outer circle of the motor lower flange and the inner hole of the motor rear cover, and a second sealing ring is arranged between the inner hole of the motor front cover and the outer circle of the motor upper flange.
6. The sealed submersible permanent magnet frequency conversion deep well pump motor structure according to claim 1, further comprising a wiring plug, wherein a wiring socket is arranged in the motor front cover, the wiring plug is plugged with the wiring socket, a wire pressing plate corresponding to the wiring plug is arranged on the motor front cover, the wire pressing plate is connected with the motor front cover by a third screw, and the wiring socket is connected with the motor front cover by a fourth screw.
7. The sealed submersible permanent magnet frequency conversion deep-well pump motor structure according to claim 1, wherein a sealing member sleeved on the rotating shaft is arranged in the upper flange of the motor, a pressure ring positioned above the sealing member is arranged at the top of the upper flange of the motor, and a rubber sealing ring positioned above the pressure ring is arranged on the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111014007.5A CN113691080B (en) | 2021-08-31 | 2021-08-31 | Canned type formula of soaking permanent magnetism frequency conversion deep-well pump motor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111014007.5A CN113691080B (en) | 2021-08-31 | 2021-08-31 | Canned type formula of soaking permanent magnetism frequency conversion deep-well pump motor structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113691080A CN113691080A (en) | 2021-11-23 |
| CN113691080B true CN113691080B (en) | 2022-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111014007.5A Active CN113691080B (en) | 2021-08-31 | 2021-08-31 | Canned type formula of soaking permanent magnetism frequency conversion deep-well pump motor structure |
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| CN (1) | CN113691080B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114793031A (en) * | 2021-12-31 | 2022-07-26 | 温岭正峰数字机电科技有限公司 | Deep well pump and motor thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100448141C (en) * | 2006-10-16 | 2008-12-31 | 中山大学 | Alternating current permanent-magnet water-submersible electric machine |
| CN101340117A (en) * | 2007-07-03 | 2009-01-07 | 天津甘泉集团有限公司 | Shielding type oil filling diving generator |
| ES2711341T3 (en) * | 2016-05-13 | 2019-05-03 | Nidec Asi S P A | Electric motor |
| CN106972688B (en) * | 2017-05-18 | 2019-07-30 | 北京科技大学 | A kind of fluid lubricated bearing built-in motor electric main shaft structure |
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- 2021-08-31 CN CN202111014007.5A patent/CN113691080B/en active Active
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| CN113691080A (en) | 2021-11-23 |
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