CN201448441U - Mechanical sealing device insensitive to the deep sea pressure - Google Patents
Mechanical sealing device insensitive to the deep sea pressure Download PDFInfo
- Publication number
- CN201448441U CN201448441U CN2009200479769U CN200920047976U CN201448441U CN 201448441 U CN201448441 U CN 201448441U CN 2009200479769 U CN2009200479769 U CN 2009200479769U CN 200920047976 U CN200920047976 U CN 200920047976U CN 201448441 U CN201448441 U CN 201448441U
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- ring
- spring seat
- stationary ring
- rotating
- seat
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- Expired - Fee Related
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Abstract
The utility model relates to a mechanical sealing device for a shaft, particularly relates to an improved mechanical sealing device for a ship drive shaft, which comprises a rotating ring seat, a rotating ring, a spring seat and a stationary ring, wherein the rotating ring seat surrounds and is fixedly connected to a shaft sleeve, wherein the rotating ring surrounding the shaft sleeve is fixedly mounted at the end part of the rotating ring seat, the spring seat surrounding the shaft sleeve is fixedly connected to the ship body, and the stationary ring is sleeved on the spring seat and connected with the spring seat in a sliding way in the axial direction thereof, wherein pre-tightening springs are uniformly distributed in the spring seat in the circumferential direction, the two ends of the pre-tightening spring is in contact with the stationary ring and the spring seat respectively, the rotating and the stationary rings are arranged oppositely to form an end face seal pair, and the diameter of the sleeved part of the stationary ring and the spring seat is larger than the external diameter of the shaft sleeve, but smaller than the external diameter of the ring-like contact surface of the rotating and the stationary rings multiplied by 1.2. The utility model can balance automatically the axial pressure acted by the sea on the two sides of the stationary ring to integrate the rotating ring with the stationary ring closely, thereby improving the sealing effect.
Description
Technical field
The utility model relates to axle system and uses mechanical seal device, relates in particular to the improvement of boats and ships drive line with mechanical seal device.
Background technique
Mechanical seal is that a kind of usefulness solves the device that seals between transmission shaft and the body, and its relies on elastic element the pretension of dynamic and static ring end face seal pair to be reached the axial end seal arrangement of sealing, so claim end face seal again.
The primary element that constitutes mechanical seal has: the end face seal pair, elastic element, secondary seal, driving component, rotation preventing device and the fastening piece that are the plane be made up of rotating ring and stationary ring.The effect of these primary elements and require as follows:
1. the end face seal pair of forming by rotating ring and stationary ring, its effect is that sealing surface is fitted tightly, and prevents dielectric leakage;
2. elastic compensating element, refer generally to spring, bellows, barrier film etc., it mainly plays pretension, compensation and buffering effect, requires to remain the inertia that enough elasticity overcomes the friction of auxiliary seal and driving component and rotating ring etc., guarantees the good driving fit of end face seal and the tracing ability of rotating ring;
3. auxiliary seal generally adopts O type, V-type, U type, wedge type or abnormity circle, and the seal action of its main starter ring and stationary ring also plays and float and the buffering effect simultaneously;
4. driving component generally is made of driving pin, transmission ring, retainer, driving key transmission lug or castellated coupling piece etc., mainly plays the effect of the torque of axle being passed to rotating ring;
5. fastening piece generally comprises Cock screw, spring seat, gland, assembling cover, axle sleeve etc., and it plays fastening, the positioning action of dynamic and static ring;
6. rotation preventing device can play the effect that prevents that stationary ring from rotating and deviating from.
In the present mechanical seal device, spring seat is encircled axle sleeve or transmission shaft and is fixed on the hull, stationary ring is socketed on the spring seat, and located by the guide pillar of axial installation, make the stationary ring can only be along the spring seat axial slip, do not relatively rotate between stationary ring and the spring seat. preloading spring is installed in the spring seat, the two ends of preloading spring contact with stationary ring with spring seat respectively. and rotating seat is encircled axle sleeve and is fixed on the axle sleeve, the end of rotating seat is equipped with the rotating ring around axle sleeve, rotating ring and stationary ring are oppositely arranged, constitute the end face seal pair, stationary ring is pressed on the rotating ring under the elastic force effect of preloading spring vertically, thereby play seal action. because spring seat, rotating seat, rotating ring, stationary ring is the parts of sealing, thereby the outer surface of they and contact with sea water all is subjected to the pressure of seawater, wherein rotating seat and rotating ring are owing to being fixed together with axle sleeve, so rotating seat and rotating ring can axial displacement not take place because of seawater pressure; Spring seat is owing to be fixed on the hull, can axial displacement not take place because of seawater pressure, and the area of two end faces of stationary ring both sides and contact with sea water is unequal, the seawater pressure that is born is also unequal, because stationary ring is socketed in the spring seat, the area of side that stationary ring contacts with rotating ring and contact with sea water part is greater than the area of stationary ring opposite side and contact with sea water part, thereby the direction of making a concerted effort of the seawater pressure that is subjected to of stationary ring is pointed to spring seat vertically, promptly the direction with preloading spring elastic force is opposite, this makes that the stationary ring of formation end face seal pair and the contact pressure of rotating ring are weakened, especially in the underwater propeller of ocean engineering boats and ships, sometimes need 65 meters depths operations under water, the pressure that huge deep-water pressure will make stationary ring act on vertically on the rotating ring end face is seriously undermined, even cause mechanical seal leakage, cause major accident, even increase the contact pressure of rotating ring and stationary ring from aspects such as the [coefficient of that increases spring and number of springs, but because deep-water pressure is excessive, these measures often produce little effect, and still do not have good solution at present.
The model utility content
In order to solve the above-mentioned deficiency of prior art, the utility model is that a kind of mechanical seal device that not influenced by deep-water pressure will be provided, and its energy autobalance seawater eroding makes rotating ring and stationary ring good fit in the axial pressure of stationary ring both sides, improves sealing effect.
At above-mentioned technical problem, the scheme of the utility model technical solution problem is: the mechanical seal device that not influenced by deep-water pressure, comprise and encircle axle sleeve and be secured to rotating seat on this axle sleeve, the end of this rotating seat is installed with the rotating ring around described axle sleeve, and the stationary ring of encircling described axle sleeve and being secured to the spring seat on the hull and being socketed on this spring seat and slidably linking together vertically with this spring seat, the edge circumferentially is evenly equipped with preloading spring in the described spring seat, the two ends of this preloading spring contact with described spring seat with described stationary ring respectively, described rotating ring and described stationary ring are oppositely arranged and constitute the end face seal pair, and the diameter of described stationary ring and described spring seat socket part is greater than the external diameter of described axle sleeve and less than 1.2 external diameters that multiply by the annular contact surface of described rotating ring and described stationary ring.
After adopting such scheme, because the diameter of stationary ring socket spring seat part is greater than the external diameter of axle sleeve and less than 1.2 external diameters that multiply by the annular contact surface of rotating ring and stationary ring, thereby the side that contacts with preloading spring of stationary ring and the area of contact with sea water increase greatly, the seawater pressure that this side is born (direction is pointed to rotating ring by stationary ring vertically) also increases greatly, diameter by choose reasonable spring seat and stationary ring socket part, and consideration rotating ring external diameter factor, can make the suffered seawater pressure in stationary ring both sides equal substantially, roughly mutual balance, make the contact pressure of rotating ring and stationary ring not be subjected to the influence of seawater pressure substantially, guaranteed the stable of mechanical seal device sealability.
Effect was best when the diameter of stationary ring and spring seat socket part equaled the external diameter of annular contact surface of rotating ring and stationary ring.
The diameter of stationary ring and spring seat socket part equals 1.2 when multiply by the external diameter of annular contact surface of rotating ring and stationary ring, and the seawater pressure of stationary ring both sides is more or less the same, and the sealability of mechanical seal device is not had big influence.
General in the spring seat along circumferentially being evenly equipped with 6～12 preloading springs.
Description of drawings:
Below in conjunction with the drawings and specific embodiments the mechanical seal device that the utility model is not influenced by deep-water pressure is described in further detail.
Fig. 1 is that the mechanical seal device that the utility model is not influenced by deep-water pressure is applied to the structural principle schematic representation that ocean engineering boats and ships electric plating propulsion transmission shaft seals.
Embodiment
Among Fig. 1, axle sleeve 1 is fixedly connected and be wrapped in the outer surface of transmission shaft 8, spring seat 7 is encircled axle sleeve 1 and is fixedly mounted on the hull, stationary ring 5 is socketed on the spring seat 7 and with spring seat 7 and slidably links together vertically, stationary ring 5 is equipped with cylindrical guide pillar 10 vertically with spring seat 7 adjacent sides, be processed with axial guide pillar slide opening 9 with guide pillar 10 corresponding positions on the spring seat 7, guide pillar 10 stretches in the guide pillar slide opening 9, and can in guide pillar slide opening 9, slide vertically, thereby make stationary ring 5 and spring seat 7 be slidingly connected vertically, do not relatively rotate between stationary ring 5 and the spring seat 7, only endwisely slip, 6 preloading springs 6 are installed in the spring seat 7, the two ends of preloading spring 6 contact with spring seat 7 with stationary ring 6 respectively. and rotating seat 3 is fixed together by setscrew nut 2 and axle sleeve 1, the end of rotating seat 3 is embedded with the rotating ring 4 that macromolecular material is made, rotating ring 4 is oppositely arranged with stationary ring 5 and constitutes the end face seal pair, stationary ring 5 is close on the end face of rotating ring 4 under preloading spring 6 elastic force effects vertically. and the diameter of stationary ring 5 and spring seat 7 socket part equals the external diameter of the annular contact surface of rotating ring 4 and stationary ring 5, when electric plating propulsion is operated in the deep-sea, because stationary ring 5 both sides equate with the area of contact with sea water part, the seawater pressure that bear stationary ring 5 both sides also equates, eliminated the deficiency of seawater pressure weakening preloading spring 6 elastic force, no matter any under water depths can both reach and adhere to specification to make the sealing of mechanical seal device, guarantees that the sealability of mechanical seal device is unaffected.
Above-mentioned mode of execution only is the utility model one of mode of execution preferably; wherein the diameter of stationary ring and spring seat socket part not only is confined to equal the external diameter of the annular contact surface of rotating ring and stationary ring; also can equal 1.2 external diameters that multiply by the annular contact surface of rotating ring and stationary ring; can also be slightly less than the external diameter of the annular contact surface of rotating ring and stationary ring, all fall into protection of the present utility model so long as multiply by at axle sleeve external diameter and 1.2 between the external diameter of annular contact surface of rotating ring and stationary ring.
Claims (3)
1. mechanical seal device that not influenced by deep-water pressure, comprise and encircle axle sleeve (1) and be secured to rotating seat (3) on this axle sleeve (1), the end of this rotating seat (3) is installed with the rotating ring (4) around described axle sleeve (1), and the stationary ring (5) of encircling described axle sleeve (1) and being secured to the spring seat (7) on the hull and being socketed in that this spring seat (7) is gone up and slidably linking together vertically with this spring seat (7), the edge circumferentially is evenly equipped with preloading spring (6) in the described spring seat (7), the two ends of this preloading spring (6) contact with described spring seat (7) with described stationary ring (5) respectively, described rotating ring (4) and described stationary ring (5) are oppositely arranged and constitute the end face seal pair, it is characterized in that: the diameter of described stationary ring (5) and described spring seat (7) socket part is greater than the external diameter of described axle sleeve (1) and less than 1.2 external diameters that multiply by described rotating ring (4) and the annular contact surface of described stationary ring (5).
2. the mechanical seal device that not influenced by deep-water pressure according to claim 1 is characterized in that: the diameter of described stationary ring (5) and described spring seat (7) socket part equals the external diameter of the annular contact surface of described rotating ring (4) and described stationary ring (5)
3. the mechanical seal device that not influenced by deep-water pressure according to claim 1 is characterized in that: the edge circumferentially is evenly equipped with 6 described preloading springs (6) in the described spring seat (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200479769U CN201448441U (en) | 2009-08-24 | 2009-08-24 | Mechanical sealing device insensitive to the deep sea pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200479769U CN201448441U (en) | 2009-08-24 | 2009-08-24 | Mechanical sealing device insensitive to the deep sea pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201448441U true CN201448441U (en) | 2010-05-05 |
Family
ID=42553157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200479769U Expired - Fee Related CN201448441U (en) | 2009-08-24 | 2009-08-24 | Mechanical sealing device insensitive to the deep sea pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201448441U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438217A (en) * | 2013-09-11 | 2013-12-11 | 山东天力干燥股份有限公司 | Universal rotary dynamic sealing device and gyration equipment |
| WO2014180152A1 (en) * | 2013-05-06 | 2014-11-13 | 南京林业大学 | Performance test device for mechanical seal |
-
2009
- 2009-08-24 CN CN2009200479769U patent/CN201448441U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014180152A1 (en) * | 2013-05-06 | 2014-11-13 | 南京林业大学 | Performance test device for mechanical seal |
| US9631990B2 (en) | 2013-05-06 | 2017-04-25 | Nanjing Forestry University | Device for testing mechanical seal performance |
| CN103438217A (en) * | 2013-09-11 | 2013-12-11 | 山东天力干燥股份有限公司 | Universal rotary dynamic sealing device and gyration equipment |
| CN103438217B (en) * | 2013-09-11 | 2016-08-10 | 山东天力干燥股份有限公司 | A kind of Universal rotary dynamic sealing device and apparatus for rotating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 224200, Zhenxing Road, Dongtai Economic Development Zone, Jiangsu 16-1, China Patentee after: Jiangsu Huayang Heavy Industry Co.,Ltd. Address before: 224200, Zhenxing Road, Dongtai Economic Development Zone, Jiangsu 16-1, China Patentee before: Jiangsu Huayang Heavy Industries Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100505 Termination date: 20130824 |