CN113452186A - Underwater motor stator sealing assembly - Google Patents
Underwater motor stator sealing assembly Download PDFInfo
- Publication number
- CN113452186A CN113452186A CN202110701382.0A CN202110701382A CN113452186A CN 113452186 A CN113452186 A CN 113452186A CN 202110701382 A CN202110701382 A CN 202110701382A CN 113452186 A CN113452186 A CN 113452186A
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- CN
- China
- Prior art keywords
- sealing resin
- stator
- shell
- wire outlet
- sealing
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Classifications
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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
- H02K5/124—Sealing of shafts
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention discloses an underwater motor stator sealing assembly which comprises a shell and an inner protective sleeve coaxially sleeved in the shell, wherein an annular mounting cavity is formed between the shell and the inner protective sleeve, a stator is mounted in the annular mounting cavity, shaft end sealing resin is filled at two axial ends of the annular mounting cavity to encapsulate the stator in the annular mounting cavity, and the shaft end sealing resin is bonded between the protective sleeve and the shell. According to the invention, comprehensive sealing protection is formed on the underwater motor through the shaft end sealing resin, the diameter end external sealing resin, the diameter end internal sealing resin and the top layer sealing resin, and the sealing resins are mutually bonded or bonded with the motor in a pouring mode, so that the stability of the sealing resins is improved, and the pressure-bearing sealing performance of the underwater motor is improved.
Description
Technical Field
The invention relates to the technical field of motors, in particular to an underwater motor stator sealing assembly.
Background
The underwater propeller works in water for a long time, and a motor in the underwater propeller is immersed in water for a long time, so that if the sealing structure is not well designed, the motor is short-circuited, and the propeller is scrapped; the existing motor stator usually realizes pressure-bearing sealing by arranging a sealing ring, and the sealing effect of the sealing ring is poor after the structure is soaked for a long time, so that sealing failure is easily caused;
therefore, a sealing assembly for a stator of an underwater motor is needed to improve the sealing effect of the stator.
Disclosure of Invention
The invention discloses an underwater motor stator sealing assembly which comprises a shell and an inner protective sleeve coaxially sleeved in the shell, wherein an annular mounting cavity is formed between the shell and the inner protective sleeve, a stator is mounted in the annular mounting cavity, shaft end sealing resin is filled at two axial ends of the annular mounting cavity to encapsulate the stator in the annular mounting cavity, and the shaft end sealing resin is bonded between the protective sleeve and the shell.
Furthermore, the inner circle of the shell is located on two axial sides of the stator and is provided with an annular outer sealing groove, the outer sealing groove is filled with diameter end outer sealing resin, and the diameter end outer sealing resin is located between the shell and shaft end sealing resin.
Furthermore, the outer circle of the inner protective sleeve is positioned on two axial sides of the stator and is provided with an annular inner sealing groove, the inner sealing groove is filled with radial end inner sealing resin, and the radial end inner sealing resin is positioned between the inner protective sleeve and shaft end sealing resin.
Furthermore, the installation cavity is a stepped cavity in the axial direction, and one axial end of the stator abuts against an inner shaft shoulder of the installation cavity to form axial positioning.
Further, the diameter end outer sealing resin and the diameter end inner sealing resin are substantially opposed in a radial direction.
Further, the installation cavity is a two-stage stepped cavity which is gradually reduced leftwards in the axial direction, the stator is installed on the middle diameter section of the installation cavity, and the shaft end sealing resin is filled in the large diameter section and the small diameter section of the installation cavity.
Furthermore, the top of the shell is provided with a connecting part which is formed by upward bulges, the upper end of the connecting part is provided with a wire outlet groove which is formed by depression, the bottom of the wire outlet groove is provided with a wire outlet hole which is communicated with the installation cavity, the stator is connected with a motor wire outlet, the motor wire outlet is connected to the outside of the shell through the wire outlet hole and the wire outlet groove, and the shaft end sealing resin is filled into the wire outlet hole.
Further, the inner circle of the shell is a secondary step circle face with the inner diameter gradually reduced leftwards along the axial direction, the outer circle of the inner protective sleeve is a smooth face, and therefore the installation cavity enclosed between the shell and the inner protective sleeve is a secondary step cavity.
Furthermore, a positioning hole is formed in the bottom of the wire outlet groove and is opposite to the stator, a positioning pin penetrates through the positioning hole to position the stator, top-layer sealing resin is filled in the wire outlet groove, and the top-layer sealing resin covers the positioning hole and the wire outlet hole.
The invention has the beneficial effects that:
according to the invention, comprehensive sealing protection is formed on the underwater motor stator through the shaft end sealing resin, the diameter end external sealing resin, the diameter end internal sealing resin and the top layer sealing resin, and all the sealing resins are mutually bonded or bonded with stator parts in a pouring mode, so that the stability of the sealing resins is improved, and the pressure-bearing sealing performance of the underwater motor is improved;
the radial end external sealing resin is bonded between the shell and the shaft end sealing resin, the radial end internal sealing resin is bonded between the inner protective sleeve and the shaft end sealing resin, secondary sealing is favorably formed between the shaft end sealing resin and the shell and between the shaft end sealing resin and the inner protective sleeve, the sealing performance is improved, the radial extrusion is formed on the shaft end sealing resin through the radial end external sealing resin and the radial end internal sealing resin, and then the joint degree of the shaft end sealing resin, the shell and the inner protective sleeve is improved, and the sealing effect is improved; in addition, the wire outlet hole is sealed through the top layer sealing resin for the second time, the upper end of the motor wire outlet is fixed by the top layer sealing resin, namely in the swinging process of the motor wire outlet, the movement cannot be conducted downwards to the corresponding shaft end sealing resin in the wire outlet hole, and further the sealing performance of the wire outlet hole is improved.
Drawings
The invention is further described below with reference to the figures and examples.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a side view of the structure of FIG. 1;
FIG. 3 is a partial schematic view of the structure;
Detailed Description
The sealed assembly of motor stator under water of this embodiment, including shell 1 and coaxial inner sheath 2 in the shell, form annular installation cavity between shell and the inner sheath, stator 3 installs in annular installation cavity, the axial both ends filling of annular installation cavity has axle head sealing resin 4 in order to encapsulate the stator in annular installation cavity, axle head sealing resin bonds between protective sheath and shell. The inner protective sleeve is preferably made of a plastic high polymer material, and as shown in fig. 1 and 3, the outer circle of the stator is attached to the inner circle of the shell, and the inner circle of the stator is attached to the outer circle of the inner protective sleeve, so that the sealing resin filled at the axial ends of the stator does not enter the gaps between the stator and the shell and between the stator and the inner protective sleeve; in the implementation, the two shaft end sealing resins 4, the diameter end outer sealing resin 5, the diameter end inner sealing resin 6 and the top layer sealing resin 10 all adopt a vacuum filling process, internal bubbles or shrinkage cavities are reduced after resin filling through the process, the compactness of the resin is improved, the bonding between the protective sleeve and the shell is facilitated, and the complete encapsulation and sealing of the stator are facilitated.
In this embodiment, an annular outer sealing groove is formed in the outer circle of the housing at two axial sides of the stator, the outer sealing groove is filled with diameter end outer sealing resin 5, and the diameter end outer sealing resin is located between the housing and the shaft end sealing resin. With reference to fig. 1 to 3, two outer sealing grooves are formed in the inner circle of the housing, the two outer sealing grooves correspond to two shaft end sealing resins 4, and the diameter end outer sealing resin 5 is bonded between the housing and the shaft end sealing resin, so that secondary sealing is formed between the shaft end sealing resin 4 and the housing, and the sealing performance is improved.
In this embodiment, the position of inner protective sheath excircle in stator axial both sides has seted up annular inside seal groove, the filling has footpath end inside seal resin 6 in the inside seal groove, footpath end inside seal resin is located between inner protective sheath and the axle head sealing resin. As shown in fig. 1 to 3, two inner seal grooves are formed in the outer circle of the inner protective sleeve, the two inner seal grooves correspond to the two shaft end sealing resins 4, and the radial end inner sealing resin 5 is bonded between the inner protective sleeve and the shaft end sealing resin, so that secondary sealing is formed between the shaft end sealing resin 4 and the inner protective sleeve, and the sealing performance is improved.
In this embodiment, the installation cavity is a stepped cavity in the axial direction, and one axial end of the stator abuts against an inner shaft shoulder of the installation cavity to form axial positioning. As shown in the combined figure 1, the left side of the stator is abutted to the shaft shoulder, the right side of the stator is positioned through shaft end sealing resin on the right side, the structure is favorable for accurately controlling the positions of the two shaft end sealing resin and the stator, and the positioning precision is improved.
In the present embodiment, the diameter end outer sealing resin 5 and the diameter end inner sealing resin 6 are substantially opposed in the radial direction. The approximate relative meaning is that the radial projections of the two are overlapped or partially overlapped, as shown in fig. 3, the radial end outer sealing resin on the left side corresponds to the radial end inner sealing resin on the left side in the radial direction, the radial end outer sealing resin on the right side corresponds to the radial end inner sealing resin on the right side in the radial direction, and the radial end outer sealing resin 5 and the radial end inner sealing resin 6 form radial extrusion on the shaft end sealing resin 4, so that the attaching degree of the shaft end sealing resin with the shell and the inner protective sleeve is improved, and the sealing effect is improved.
In this embodiment, the installation cavity is a two-stage stepped cavity that gradually becomes smaller leftward in the axial direction, the stator is installed in the middle diameter section of the installation cavity, and the shaft end sealing resin is filled in the large diameter section and the small diameter section of the installation cavity. The left and right directions are consistent with the directions in the graph 1, and as shown in a combined graph 3, shaft end sealing resin in the large-diameter section is attached to the shell and the inner protective sleeve, and is also attached to an inner shaft shoulder of the large-diameter section cavity, so that the bonding stability of the shaft end sealing resin and the large-diameter cavity is improved, the sealing effect is improved, and the stator is reliably axially positioned.
In this embodiment, the top of the housing is provided with a connecting portion 7 which is formed by upward protrusion, the upper end of the connecting portion is provided with a wire outlet groove 7a which is formed by depression, the bottom of the wire outlet groove is provided with a wire outlet hole 7b communicated with the installation cavity, the stator is connected with a motor wire outlet 8, the motor wire outlet is connected to the outside of the housing through the wire outlet hole and the wire outlet groove, and the shaft end sealing resin 4 is filled into the wire outlet hole. As shown in fig. 3, the bottom of the motor outgoing line is embedded in the right shaft end sealing resin, and the right shaft end sealing resin overflows into the outgoing line hole.
In this embodiment, the interior round surface of shell is the second grade ladder disc that internal diameter diminishes in proper order to left along the axial, interior protective sheath excircle is the plain noodles to make the installation cavity of encircleing be the second grade ladder chamber between shell and the interior protective sheath. Combine shown in fig. 3, the shell inner chamber is the ladder face, and the outer wall of interior protective sheath is the plain noodles, and the interior shaft shoulder through the well footpath section of shell forms the location to the stator, and the axle head sealing resin on the interior shaft shoulder through the big footpath section of shell and right side matches, improves stator and axle head sealing resin's stability as the benchmark with the shell, and then improves the stability of the inside spare part of whole annular installation cavity.
In this embodiment, the bottom of the wire outlet groove 7a is provided with a positioning hole facing the stator, a positioning pin 9 is inserted into the positioning hole to position the stator, a top layer sealing resin 10 is filled in the wire outlet groove, and the positioning hole and the wire outlet hole 7b are covered with the top layer sealing resin. As shown in fig. 3, the top layer sealing resin is arranged to be crucial to the sealing of the wire outlet hole and the installation position of the positioning pin, the connecting part is of a hollow structure, the top layer sealing resin is filled in the cavity of the connecting part, the wire outlet hole is sealed through the top layer sealing resin for the second time, the upper end of the motor wire outlet is fixed by the top layer sealing resin, namely, the motor wire outlet swing process is performed, the movement cannot be conducted downwards to the corresponding shaft end sealing resin in the wire outlet hole, the sealing performance of the right shaft end sealing resin is improved, in addition, the top layer sealing resin covers the positioning pin, and the whole sealing is formed in the wire outlet groove of the connecting part.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (9)
1. The utility model provides an underwater motor stator seals assembly which characterized in that: including shell and coaxial endotheca interior protective sheath in the shell, form annular installation cavity between shell and the interior protective sheath, the stator is installed in annular installation cavity, the axial both ends filling of annular installation cavity has the sealed resin of axle head in order to encapsulate the stator in annular installation cavity, the sealed resin of axle head bonds between protective sheath and shell.
2. The underwater motor stator seal assembly of claim 1, wherein: the stator is characterized in that the inner circle of the shell is located on two axial sides of the stator and is provided with an annular outer sealing groove, the outer sealing groove is filled with diameter end outer sealing resin, and the diameter end outer sealing resin is located between the shell and shaft end sealing resin.
3. The underwater motor stator seal assembly of claim 2, wherein: the outer circle of the inner protective sleeve is located on two axial sides of the stator and is provided with an annular inner sealing groove, the inner sealing groove is filled with radial end inner sealing resin, and the radial end inner sealing resin is located between the inner protective sleeve and shaft end sealing resin.
4. The underwater motor stator seal assembly of claim 1, wherein: the installation cavity is a stepped cavity in the axial direction, and one axial end of the stator abuts against an inner shaft shoulder of the installation cavity to form axial positioning.
5. The underwater motor stator seal assembly of claim 2, wherein: the diameter end outer sealing resin and the diameter end inner sealing resin are substantially opposite in a radial direction.
6. The underwater motor stator seal assembly of claim 4, wherein: the stator is arranged on the middle diameter section of the mounting cavity, and the shaft end sealing resin is filled in the large diameter section and the small diameter section of the mounting cavity.
7. The underwater motor stator seal assembly of claim 5, wherein: the motor is characterized in that the top of the shell is provided with a connecting part formed by upward bulges, the upper end of the connecting part is provided with a wire outlet groove formed by depression, the bottom of the wire outlet groove is provided with a wire outlet hole communicated with the mounting cavity, the stator is connected with a motor wire outlet, the motor wire outlet is connected to the outside of the shell through the wire outlet hole and the wire outlet groove, and shaft end sealing resin is filled into the wire outlet hole.
8. The underwater motor stator seal assembly of claim 6, wherein: the inner circle of the shell is a secondary step circle face with the inner diameter gradually reduced leftwards along the axial direction, the outer circle of the inner protective sleeve is a smooth face, and therefore the installation cavity enclosed between the shell and the inner protective sleeve is a secondary step cavity.
9. The underwater motor stator seal assembly of claim 7, wherein: the wire outlet groove is characterized in that a positioning hole is formed in the bottom of the wire outlet groove and faces the stator, a positioning pin penetrates through the positioning hole to position the stator, top layer sealing resin is filled in the wire outlet groove, and the top layer sealing resin covers the positioning hole and the wire outlet hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110701382.0A CN113452186B (en) | 2021-06-23 | 2021-06-23 | Sealing assembly for underwater motor stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110701382.0A CN113452186B (en) | 2021-06-23 | 2021-06-23 | Sealing assembly for underwater motor stator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113452186A true CN113452186A (en) | 2021-09-28 |
| CN113452186B CN113452186B (en) | 2023-06-23 |
Family
ID=77812381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110701382.0A Active CN113452186B (en) | 2021-06-23 | 2021-06-23 | Sealing assembly for underwater motor stator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113452186B (en) |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2081600U (en) * | 1990-07-26 | 1991-07-24 | 耿志远 | Screened submersible motor |
| US5833444A (en) * | 1994-01-13 | 1998-11-10 | Harris; Gary L. | Fluid driven motors |
| CN1294265A (en) * | 2000-12-14 | 2001-05-09 | 欧阳宝武 | Submerged pump with gasket-type seal |
| JP2007181377A (en) * | 2005-12-28 | 2007-07-12 | Asmo Co Ltd | Motor manufacturing method and motor |
| JP2007221859A (en) * | 2006-02-14 | 2007-08-30 | Denso Corp | Rotary electric machine |
| CN101820194A (en) * | 2010-02-11 | 2010-09-01 | 浙江临海电机有限公司 | Dynamic sealing device having cooling function for high-power and high-speed submerged motor |
| EP2279114A1 (en) * | 2008-04-18 | 2011-02-02 | ABB Oy | Propulsion and bearing arrangement for a ship and bearing arrangement |
| WO2012011811A1 (en) * | 2010-07-23 | 2012-01-26 | Ewt Ip B.V. | Lip seal for a generator |
| CN102624196A (en) * | 2012-03-30 | 2012-08-01 | 余虹锦 | Small-range electromagnetic eccentric magnetic gear pair with novel radial magnetic field |
| CN202414147U (en) * | 2011-11-21 | 2012-09-05 | 中国船舶重工集团公司第七一二研究所 | Integrated thruster |
| CN202616967U (en) * | 2012-03-30 | 2012-12-19 | 余虹锦 | Novel small-pole-difference electromagnetic eccentric magnetic gear pair of a radial magnetic field |
| CN104283362A (en) * | 2014-11-07 | 2015-01-14 | 苏州法拉鼎电机有限公司 | Sealing connecting structure for submersible motor and submersible motor with sealing connecting structure |
| JP2016039691A (en) * | 2014-08-07 | 2016-03-22 | トヨタ自動車株式会社 | Resolver |
| CN108063514A (en) * | 2017-12-22 | 2018-05-22 | 湖南湘电动力有限公司 | A kind of motor sealing structure |
| CN207835252U (en) * | 2018-01-25 | 2018-09-07 | 常州宝罗电机有限公司 | A kind of outlet structure of explosion separation motor |
| CN208835847U (en) * | 2018-08-20 | 2019-05-07 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of electric motor mounting structure and compressor |
| CN111884429A (en) * | 2020-09-01 | 2020-11-03 | 宁波锴晟电气有限公司 | Motor for submersible well |
-
2021
- 2021-06-23 CN CN202110701382.0A patent/CN113452186B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2081600U (en) * | 1990-07-26 | 1991-07-24 | 耿志远 | Screened submersible motor |
| US5833444A (en) * | 1994-01-13 | 1998-11-10 | Harris; Gary L. | Fluid driven motors |
| CN1294265A (en) * | 2000-12-14 | 2001-05-09 | 欧阳宝武 | Submerged pump with gasket-type seal |
| JP2007181377A (en) * | 2005-12-28 | 2007-07-12 | Asmo Co Ltd | Motor manufacturing method and motor |
| JP2007221859A (en) * | 2006-02-14 | 2007-08-30 | Denso Corp | Rotary electric machine |
| EP2279114A1 (en) * | 2008-04-18 | 2011-02-02 | ABB Oy | Propulsion and bearing arrangement for a ship and bearing arrangement |
| CN101820194A (en) * | 2010-02-11 | 2010-09-01 | 浙江临海电机有限公司 | Dynamic sealing device having cooling function for high-power and high-speed submerged motor |
| WO2012011811A1 (en) * | 2010-07-23 | 2012-01-26 | Ewt Ip B.V. | Lip seal for a generator |
| CN202414147U (en) * | 2011-11-21 | 2012-09-05 | 中国船舶重工集团公司第七一二研究所 | Integrated thruster |
| CN102624196A (en) * | 2012-03-30 | 2012-08-01 | 余虹锦 | Small-range electromagnetic eccentric magnetic gear pair with novel radial magnetic field |
| CN202616967U (en) * | 2012-03-30 | 2012-12-19 | 余虹锦 | Novel small-pole-difference electromagnetic eccentric magnetic gear pair of a radial magnetic field |
| JP2016039691A (en) * | 2014-08-07 | 2016-03-22 | トヨタ自動車株式会社 | Resolver |
| CN104283362A (en) * | 2014-11-07 | 2015-01-14 | 苏州法拉鼎电机有限公司 | Sealing connecting structure for submersible motor and submersible motor with sealing connecting structure |
| CN108063514A (en) * | 2017-12-22 | 2018-05-22 | 湖南湘电动力有限公司 | A kind of motor sealing structure |
| CN207835252U (en) * | 2018-01-25 | 2018-09-07 | 常州宝罗电机有限公司 | A kind of outlet structure of explosion separation motor |
| CN208835847U (en) * | 2018-08-20 | 2019-05-07 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of electric motor mounting structure and compressor |
| CN111884429A (en) * | 2020-09-01 | 2020-11-03 | 宁波锴晟电气有限公司 | Motor for submersible well |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113452186B (en) | 2023-06-23 |
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