CN102611238A - Dynamic sealing structure for rotating shaft of submersible motor - Google Patents
Dynamic sealing structure for rotating shaft of submersible motor Download PDFInfo
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- CN102611238A CN102611238A CN2012100816398A CN201210081639A CN102611238A CN 102611238 A CN102611238 A CN 102611238A CN 2012100816398 A CN2012100816398 A CN 2012100816398A CN 201210081639 A CN201210081639 A CN 201210081639A CN 102611238 A CN102611238 A CN 102611238A
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- rotating shaft
- framework oil
- oil seal
- end cover
- ring
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Abstract
The invention discloses a dynamic sealing structure for a rotating shaft of a submersible motor, which comprises a sealing end cover and a framework oil seal fixed on the sealing end cover. The dynamic sealing structure is characterized by also comprising a blade ring sleeved on a rotating shaft of the motor; a gap is reserved between the framework oil seal and the blade ring; the gap becomes a high pressure draft cavity when the blade ring rotates with the rotating shaft; and the shrink range between the framework oil seal and the rotating shaft is 1.7 to 2.5mm. The shrink range between the framework oil seal and the rotating shaft is smaller than 3mm, and the heat produced is below 100 DEG C, so that a bearing is not easy to burn, the rotating of the blade ring forms the high pressure draft cavity, and the pressure of the high pressure cavity is larger than the water pressure of shallow water, so that the dynamic sealing structure for the rotating shaft of the submersible motor can be effectively resistant to water.
Description
Technical field
The present invention relates to a kind of hermetically-sealed construction of motor, particularly a kind of hermetically-sealed construction that is applicable to the rotating shaft of submersible motor.
Background technology
The hermetically-sealed construction of existing submersible motor rotating shaft adopts two outside framework oil seal structures usually; And former and later two outside framework oil seals are located on the end cover; The magnitude of interference of two skeletons and machine shaft is greater than 3mm, and rotating shaft is when rotating like this, and friction generates heat for skeleton and rotating shaft; Reach 150 ℃ temperature, burn motor bearings easily.
Also have a kind of hermetically-sealed construction to comprise rotating ring and stationary ring, rotating ring and stationary ring closely are connected together, and rotating ring is embraced on machine shaft and rotated with rotating shaft; Stationary ring is fixed on the end cover, and when rotating shaft was rotated, rotating ring was close to stationary ring and is rotated to realize waterproof; But this structure stationary ring and rotating ring direct friction are easy to generate a large amount of heats; In the hermetically-sealed construction of being everlasting, produce heat, reach 150 ℃ temperature, also burn motor bearings easily; And the play of rotating shaft makes rotating ring can't closely paste mutually with stationary ring easily, thereby influences waterproof effect.
Summary of the invention
Goal of the invention of the present invention is for the deficiency of customer service above-mentioned background technology, and a kind of have outstanding waterproof effect, long service life are provided, and is difficult for burning the hermetically-sealed construction of motor bearings.
Technical scheme of the present invention is:
A kind of rotating shaft movable sealing structure of submersible motor; Comprise end cover, be fixed on the outside framework oil seal on the end cover, be enclosed within the fan blade ring in the rotating shaft of motor in addition; Leave the gap between outside framework oil seal and the fan blade ring; When the fan blade ring rotated with rotating shaft, this gap became the high pressure draught chamber, and the magnitude of interference of described outside framework oil seal and rotating shaft is between 1.7～2.5mm.
The invention has the beneficial effects as follows: the outside framework oil seal and the rotating shaft magnitude of interference are less than 3mm; The heat that produces is not easy burn bearing below 100 ℃, and the fan blade ring rotates, and the high temperature air in the gap rotates between drive outside framework oil seal and the fan blade ring; In this gap, form a high pressure draught chamber; The pressure in this hyperbaric chamber is greater than the hydraulic pressure of shallow water, effective waterproof, and because outside framework oil seal and the rotating shaft magnitude of interference is less and outside framework oil seal and fan blade ring between do not have friction; The institute so that the sealing structure decrease wearing and tearing, improved whole useful life.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1;
Fig. 2 is the front view of motor enclosing cover among Fig. 1;
Fig. 3 is the cutaway view of Fig. 2;
Fig. 4 is the front view of end cover among Fig. 1;
Fig. 5 is the cutaway view of Fig. 4;
Fig. 6 is the front view of outside framework oil seal among Fig. 1;
Fig. 7 is the front view of Fig. 1 apoplexy leaf joint;
Fig. 8 is the cutaway view of Fig. 1;
Fig. 9 is the structural representation of the embodiment of the invention 2;
Figure 10 is the profile of anti-slag ring among the embodiment 2;
Figure 11 is the structural representation of the embodiment of the invention 3;
Figure 12 is the front view of sealing ring among Figure 11;
Figure 13 is the profile of Figure 12;
Wherein: 1, motor enclosing cover, 2, end cover, 21, the external seal end cap, 22, interior end cover, 3, outside framework oil seal; 4, fan blade ring, 5, O type circle, 6, waterproof sealing gasket, 7, friction plate; 8, rotating shaft, 9, bearing, 10, the high pressure draught chamber, 101; First airflow chamber, 102, second airflow chamber, 11, anti-slag ring, 12, sealing ring.
Embodiment
The rotating shaft movable sealing structure of submersible motor as shown in Figure 1 comprises end cover (2), and end cover is stuck in motor enclosing cover (1) front-side holes; Motor enclosing cover rear is bearing (9), and rotating shaft (8) is passed through from the mesopore of end cover, leaves the gap between the mesopore of rotating shaft and end cover; Be provided with waterproof sealing gasket (6) and O type circle (5) between end cover and the motor enclosing cover; Near the machine shaft place one space is being arranged between end cover and the motor enclosing cover, the place ahead in this space is provided with the outside framework oil seal (3) that is fixed on the end cover, and the middle part in this space is provided with the fan blade ring (4) that is enclosed within the rotating shaft; Rear portion in this space is provided with antifriction (7); Also be provided with O type circle between antifriction and the motor enclosing cover, leave the gap between described outside framework oil seal and the fan blade ring, when the fan blade ring rotates with rotating shaft; This gap becomes high pressure draught chamber (10), and the magnitude of interference of outside framework oil seal and rotating shaft is 2mm.
The structure of motor enclosing cover (1) such as Fig. 2, shown in Figure 3.
The structure of end cover (2) such as Fig. 4, shown in Figure 5.
The structure of outside framework oil seal (3) is as shown in Figure 6.
The structure of fan blade ring (4) such as Fig. 7, shown in Figure 8, this fan blade ring main body is a stainless steel coil, the stainless steel coil inboard is provided with rubber ring.
On the basis of embodiment 1, be provided with the anti-slag ring (11) that is fixed in the rotating shaft in the place ahead of end cover (2), this anti-slag ring rotates with rotating shaft, can stop silt to get into from the space between end cover and the machine shaft.Should prevent that slag loops composition was shown in Figure 10, this anti-slag ring main body is a stainless steel coil, and the stainless steel coil inboard is provided with rubber ring.
Shown in figure 11, the end cover of this embodiment is different with embodiment 2 structures with embodiment 1, and is two-layer before and after the sealing end cap comprises; Be respectively external seal end cap (21) and interior end cover (22); Interior end cover is stuck in motor enclosing cover (1) front-side holes, near the machine shaft place one space is being arranged between interior end cover and the motor enclosing cover, the outside framework oil seal (3) in the place ahead in this space is provided with and is fixed on the end cover; Middle part in this space is provided with the fan blade ring (4) that is enclosed within the rotating shaft; Rear portion in this space is provided with antifriction (7), also is provided with O type circle between antifriction and the motor enclosing cover, leaves the gap between described outside framework oil seal and the fan blade ring; When the fan blade ring rotates with rotating shaft; This gap becomes second airflow chamber (102), and the magnitude of interference of outside framework oil seal and rotating shaft is 2mm, is provided with external seal end cap (21) in the outside of interior end cover (22); Between interior end cover (22), external seal end cap (21), rotating shaft (8), another space arranged; This bottom, space is provided with another and is enclosed within the sealing ring (12) that rotates with rotating shaft in the rotating shaft, and sealing ring top is provided with the outside framework oil seal that is fixed on the external seal end cap, and this outside framework oil seal sticks together with sealing ring mutually; This outside framework oil seal and sealing ring form first airflow chamber (101) between subsides place and the interior end cover mutually, and the place ahead of external seal end cap (21) also is provided with the anti-slag ring (11) that is fixed in the rotating shaft.The structure of sealing ring such as Figure 12, shown in Figure 13, main body is a stainless steel coil, the stainless steel coil inboard is provided with rubber ring.
Because fan blade ring and sealing ring rotate two airflow chamber that form, these two airflow chamber all are the high pressure draught chambers, can effectively prevent the entering of sealing, can reach 5 meters through the diving depth of testing this structure.
Claims (3)
1. the rotating shaft movable sealing structure of a submersible motor; Comprise end cover, be fixed on the outside framework oil seal on the end cover, it is characterized in that being enclosed within addition the fan blade ring in the rotating shaft of motor; Leave the gap between outside framework oil seal and the fan blade ring; When the fan blade ring rotated with rotating shaft, this gap became the high pressure draught chamber, and the magnitude of interference of described outside framework oil seal and rotating shaft is between 1.7～2.5mm.
2. the rotating shaft movable sealing structure of submersible motor as claimed in claim 1 is characterized in that being provided with the anti-slag ring that is fixed in the rotating shaft in the place ahead of end cover, and this anti-slag ring rotates with rotating shaft.
3. the rotating shaft movable sealing structure of submersible motor as claimed in claim 1 is characterized in that the sealing end cap is two-layer before and after comprising, is respectively external seal end cap and interior end cover; Interior end cover is stuck in the front-side holes of motor enclosing cover, near the machine shaft place one space is being arranged between interior end cover and the motor enclosing cover, the outside framework oil seal in the place ahead in this space is provided with and is fixed on the end cover; Middle part in this space is provided with the fan blade ring that is enclosed within the rotating shaft; Rear portion in this space is provided with antifriction, is provided with O type circle between antifriction and the motor enclosing cover, leaves the gap between described outside framework oil seal and the fan blade ring; When the fan blade ring rotates with rotating shaft; This gap becomes second airflow chamber, and the magnitude of interference of outside framework oil seal and rotating shaft is 2mm, is provided with the external seal end cap in the outside of interior end cover; Between interior end cover, external seal end cap, rotating shaft, another space arranged; This bottom, space is provided with another and is enclosed within the sealing ring that rotates with rotating shaft in the rotating shaft, and sealing ring top is provided with the outside framework oil seal that is fixed on the external seal end cap, and this outside framework oil seal sticks together with sealing ring mutually; This outside framework oil seal and sealing ring form first airflow chamber between subsides place and the interior end cover mutually, and the place ahead of external seal end cap also is provided with the anti-slag ring that is fixed in the rotating shaft.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210081639.8A CN102611238B (en) | 2012-03-26 | 2012-03-26 | The rotating shaft movable sealing structure of submersible motor |
| PCT/CN2012/085932 WO2013143315A1 (en) | 2012-03-26 | 2012-12-05 | Rotating shaft dynamic seal structure of submersible motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210081639.8A CN102611238B (en) | 2012-03-26 | 2012-03-26 | The rotating shaft movable sealing structure of submersible motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102611238A true CN102611238A (en) | 2012-07-25 |
| CN102611238B CN102611238B (en) | 2015-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210081639.8A Active CN102611238B (en) | 2012-03-26 | 2012-03-26 | The rotating shaft movable sealing structure of submersible motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102611238B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013143315A1 (en) * | 2012-03-26 | 2013-10-03 | 吴江天龙电子机械设备有限公司 | Rotating shaft dynamic seal structure of submersible motor |
| CN106411022A (en) * | 2016-10-28 | 2017-02-15 | 吴江天龙电子机械设备有限公司 | Inlaid sealing conducting ring |
| CN109560656A (en) * | 2018-11-21 | 2019-04-02 | 中国科学院电工研究所 | A kind of connection type in reliable motor cycle water route |
| CN109861434A (en) * | 2018-12-21 | 2019-06-07 | 中国船舶重工集团公司第七一0研究所 | A kind of oil pressure balance electric motor motive sealing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2373939Y (en) * | 1999-04-23 | 2000-04-12 | 赵子明 | Sand-proof sealing mechanism for submerged motor |
| US20060170298A1 (en) * | 2005-01-28 | 2006-08-03 | Edrington Samuel R | Liquid spray shield for liquid-cooled alternators |
| CN102231583A (en) * | 2011-06-29 | 2011-11-02 | 宁夏西北骏马电机制造股份有限公司 | Motor shaft extension end sealing structure and motor |
| CN102280964A (en) * | 2011-09-01 | 2011-12-14 | 上海特波电机有限公司 | Motor with low mechanical loss |
| CN202513716U (en) * | 2012-03-26 | 2012-10-31 | 吴江天龙电子机械设备有限公司 | Rotating shaft dynamic seal structure of submersible motor |
-
2012
- 2012-03-26 CN CN201210081639.8A patent/CN102611238B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2373939Y (en) * | 1999-04-23 | 2000-04-12 | 赵子明 | Sand-proof sealing mechanism for submerged motor |
| US20060170298A1 (en) * | 2005-01-28 | 2006-08-03 | Edrington Samuel R | Liquid spray shield for liquid-cooled alternators |
| CN102231583A (en) * | 2011-06-29 | 2011-11-02 | 宁夏西北骏马电机制造股份有限公司 | Motor shaft extension end sealing structure and motor |
| CN102280964A (en) * | 2011-09-01 | 2011-12-14 | 上海特波电机有限公司 | Motor with low mechanical loss |
| CN202513716U (en) * | 2012-03-26 | 2012-10-31 | 吴江天龙电子机械设备有限公司 | Rotating shaft dynamic seal structure of submersible motor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013143315A1 (en) * | 2012-03-26 | 2013-10-03 | 吴江天龙电子机械设备有限公司 | Rotating shaft dynamic seal structure of submersible motor |
| CN106411022A (en) * | 2016-10-28 | 2017-02-15 | 吴江天龙电子机械设备有限公司 | Inlaid sealing conducting ring |
| CN106411022B (en) * | 2016-10-28 | 2019-01-18 | 吴江天龙电子机械设备有限公司 | Inserted sealing conducting ring |
| CN109560656A (en) * | 2018-11-21 | 2019-04-02 | 中国科学院电工研究所 | A kind of connection type in reliable motor cycle water route |
| CN109861434A (en) * | 2018-12-21 | 2019-06-07 | 中国船舶重工集团公司第七一0研究所 | A kind of oil pressure balance electric motor motive sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102611238B (en) | 2015-08-19 |
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| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Junhua Inventor after: Pan Bo Inventor after: Ruan Wenzhi Inventor after: He Feng Inventor before: Wang Junhua Inventor before: Pan Bo Inventor before: Ruan Wenzhi |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WANG JUNHUA PAN BO RUAN WENZHI TO: WANG JUNHUA PAN BO RUAN WENZHI HE FENG |
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| C14 | Grant of patent or utility model | ||
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