CN205956384U - Ship stern axle air formula oil lubrication sealing device - Google Patents
Ship stern axle air formula oil lubrication sealing device Download PDFInfo
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- CN205956384U CN205956384U CN201620914168.8U CN201620914168U CN205956384U CN 205956384 U CN205956384 U CN 205956384U CN 201620914168 U CN201620914168 U CN 201620914168U CN 205956384 U CN205956384 U CN 205956384U
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- oil
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- oil pocket
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Abstract
The utility model discloses a ship stern axle air formula oil lubrication sealing device, including the stern shaftbushing, on the stern shaftbushing after from forward in proper order the cover first sealing washer, two sealing washers, three sealing washers and four sealing washers are equipped with, be equipped with the vary voltage air chamber between first sealing washer and two sealing washers, be equipped with the vary voltage oil pocket between two sealing washers and three sealing washers, be equipped with the steady voltage oil pocket between three sealing washers and four sealing washers, the vary voltage air chamber is linked together with the pressured air source through air pressure controller, the vary voltage oil pocket is linked together with the vary voltage oil pump, the steady voltage oil pocket is linked together with the gravity oil tank, air pressure controller and vary voltage oil pump and controller electricity mutually are connected, this controller still with pressure sensor, baroceptor and vary voltage oil sensor electric connection mutually. Atmospheric pressure P1 in the vary voltage air chamber is greater than the outer water pressure P0 of ship board, and the atmospheric pressure P1 in the vary voltage air chamber is greater than the oil pressure P2 in the vary voltage oil pocket, and the oil pressure P2 in the vary voltage oil pocket then is lighter than the oil pressure P3 who stablizes in the oil pocket. The thorough separation of oil and water can not only be realized to this oil lubrication sealing device, and draft depth change can be followed to sealing washer both sides pressure differential moreover to guarantee the sealing washer and work under less load that the sealing reliability improves by a wide margin, life lengthens by a wide margin.
Description
Technical field
The utility model is related to a kind of ship stern shaft seal gland, more particularly, to includes the stern tube shaft oil of lippacking
Sealing device after lubrication.
Background technology
The condition of work of screw shaft of ship sealing device is very severe, it except by sharp wear and friction high temperature action in addition to,
Also acted on by ocean, rivers water body containing silt.When large ship drinking water is deeper, screw shaft of ship sealing device still suffers from
Outboard hydraulic pressure and the effect of lubricating oil static pressure pressure differential；During screw revolution, cantilever and uneven load can be produced again, cause
Stern tube shaft is made to produce circular runout and eccentric vibrating；During ship reversing, stern tube shaft also can produce certain oscillation crosswise.Severe work
Condition is easy to make screw shaft of ship sealing device operation troubles, once stern shaft seal breaks down, not only can be formed a large amount of
Seawater invades stern pipe, accelerates the damage of stern pipe and stern bearing, but also can make oil leakage or produce substantial amounts of cabin sewage,
Water body is polluted.
Stern shaft seal structure mainly includes two kinds of structures, water lubrication sealing device and lubricated sealing device of oil, wherein glossy
Sliding sealing device has loading capacity of oil film greatly, oil lubrication effect stability, and wear extent is little, the excellent advantage of sealing property.Existing wide
The lubricated sealing device of oil of general use mainly presses national standard《Ship stern tube shaft lubricated sealing device of oil GB/T25017 2010》System
Make production, sealing device is provided with three Dao Huo tetra- road sealing ring after the oil lubrication of screw positioned at ship stern, sealing ring adopts lip
Shape sealing ring.In the sealing device with three seals circle, the lip of the twice lip-type packing near seawater side is towards sea
Water side, and one lip-type packing lip near central siphon side, towards central siphon side, forms between adjacent sealing ring and is used for filling out
Fill the lubricating cavity of lubricating oil.And there are two road sealing ring lips of rear side in the sealing device of four road sealing rings towards seawater side,
The two seals circle lip of front side, towards central siphon side, forms the lubrication for filling lubricating oil between two adjacent lip-type packings
Oil pocket.
Because above-mentioned lip-type packing relies primarily on pressure differential and the packing spring tightening force reality of sealing ring both sides
Now seal, pressure at both sides difference is bigger, and frictional force is bigger, and oil film is thinner.Although sealing ring pressure at both sides difference can make greatly oil and
The leakage rate of water reduces, but the abrasion between sealing ring lip and axle sleeve will aggravate, and the quickening of wear extent can lead to close
Envelope effect drastically declines.The method therefore reducing leakage rate using increase elastic tightening force on axle sleeve for the sealing ring is inadvisable
, and elastic tightening force depends primarily on the banding spring of sealing ring, and its size can not change, and the only effective approach is exactly
Reduce the pressure reduction of sealing ring both sides, but the oil pressure in seal oil chamber in existing sealing device is to be difficult to adjust and tend to constant
's.So when drauht changes, sealing ring both sides arise that larger oil pressure is poor, abrasion is made to accelerate, leakage rate is gradually
Become big.The factor such as the vibration of shafting, installation quality and abrasion simultaneously, often there is serious leakage in sealing device quickly.
Utility model content
For the above-mentioned deficiency existing for prior art, technical problem to be solved in the utility model is to provide a kind of ship
Stern tube shaft air type lubricated sealing device of oil, it not only enables oil and being completely separated of water, and sealing ring both sides pressure reduction can
With shipping draft change, thus ensureing that sealing ring works under compared with Smaller load.
In order to solve above-mentioned technical problem, ship stern tube shaft air type lubricated sealing device of oil of the present utility model, including stern tube shaft
Bushing, is set with first road sealing ring, two road sealing rings, the sealing of three seals Quan He tetra- road on stern tube shaft bushing from back to front successively
Circle, is provided with transformation air chamber between first road sealing ring and two road sealing rings, is provided between two road sealing rings and three seals circle
Transformation oil pocket, is provided with voltage stabilizing oil pocket between three seals Quan Yu tetra- road sealing ring；Described transformation air chamber is controlled by air pressure
Device is connected with pressure air source, and described transformation oil pocket is connected with transformation oil pump, and described voltage stabilizing oil pocket is connected with gravity tank
Logical；Described gas pressure regulator and transformation oil pump are electrically connected with controller, this controller also with hydraulic pressure sensor, baroceptor
It is electrically connected with transformation oil sensor.
In said structure, because the transformation air cavity that is connected with compressed air source is by the water outside oil pocket lubricating oil and ship side
It is completely separated so that water and oil are not likely to form mutual blending and leakage, even if a small amount of profit is sewed also can hold to air chamber
Change places and carry out Insult Acquisition, do not result in pollution.And in such a configuration, when the air pressure of transformation air cavity is more than outboard hydraulic pressure
When, the air in air cavity always constantly overflows in water, whether seal water-sealing circle or oil sealing sealing ring can be less
Working under load, substantially prolongs the service life of sealing ring；And when the air pressure of transformation air cavity is slightly smaller than outboard hydraulic pressure, though
So seal water-sealing circle positive pressure is slightly larger than or is equal to the back pressure of this sealing ring, will not form excessive pressure reduction, both sides pressure reduction quilt
Control in normal range (NR), the wear extent of sealing ring diminishes, and service life is elongated.Again due to transformation air cavity and voltage stabilizing oil pocket it
Between be additionally provided with transformation oil pocket, this transformation oil pocket can reduce the live load of oil pocket both sides sealing circle, make sealing ring using mill
Damage amount diminishes, and service life is elongated, especially from stablizing oil pocket gradually reducing to transformation oil pocket formation two cavity oil pressure, makes each
The pressure differential of sealing ring both sides diminishes, can stabilized seal effect effectively, can effectively reduce sealing ring live load again.More by
Hydraulic pressure sensor in this device and oil pressure sensor are all electrically connected with the controller, and this controller controls transformation oil pump gentle
Pressure controller, when shipping draft changes and causes variation in water pressure, by this automatic control system, makes in transformation air cavity
Oil pressure in air pressure and transformation oil pocket makees follow-up adjustment with outboard hydraulic pressure, makes the air pressure of transformation air cavity and the oil pressure of transformation oil pocket
Follow and sexually revise, the oil pressure of air pressure and lubricating oil remains in optimum value, no matter the state of absorbing water have unchanged, close
The load of front cover is all very little, and keeps basically identical.
A kind of preferred embodiment of the present utility model, the air pressure P in described transformation air chamber1Hydraulic pressure P outer more than ship side0,
Air pressure P in transformation air chamber1More than the oil pressure P in transformation oil pocket2, oil pressure P in transformation oil pocket2Then it is less than and stablize in oil pocket
Oil pressure P3.Because in each oil pocket and air chamber, pressure passes through the automatically controlling of control system, remain air constantly from
Overflow in water, each road oil sealing sealing ring can ensure to be operated under minimum loading condiction, both can guarantee that oil, water thorough
Separate, sealing reliability and the service life of sealing device can be greatly prolonged again.
Another kind preferred embodiment of the present utility model, the air pressure P in described transformation air chamber1Less than or equal to ship side
Outer hydraulic pressure P0.Air pressure in transformation air cavity is slightly smaller than the outboard hydraulic pressure of sealing device, so passes through the design of oil pressure in oil pocket, base
Originally air cavity hollow gas can be closed, and the constant of source of the gas and air cavity air pressure is kept by control system.
Further embodiment of the present utility model, described transformation air chamber is communicated with discharge valve.Change can be calmed the anger
Oily wastewater pollution thing in chamber is drained in time, it is to avoid pollution, stablizes the dischargeable capacity of transformation air cavity.
The utility model further embodiment, described head road sealing ring, two road sealing rings, three seals Quan He tetra- road are close
Seal is lip-type packing, and towards rear side, three seals Quan He tetra- road seals the lip of first road sealing ring and two road sealing rings
The lip of circle is towards front side.Fabulous radial and axial sealing followability is had using lip-type packing, stern can be well adapted for
Axle working condition is it is ensured that sealing ring reliability service seals with effective.
Preferred embodiment of the present utility model, described transformation oil sensor is press detection sensor, and this sensor is used
Oil pressure P in detection transformation oil pocket2；Described baroceptor is press detection sensor, and this sensor is used for air pressure and controls
Air pressure P in device1；Described hydraulic pressure sensor is press detection sensor, and this sensor is used for detecting the hydraulic pressure P outside ship side0.Pressure
Force snesor can accurately detect outboard hydraulic pressure, air cavity air pressure and oil pocket oil pressure, is easy to the model- following control of each chamber pressure.
Preferred embodiment of the present utility model, described controller is PLC.It is high using PLC reliability,
Strong antijamming capability.
Brief description
Fig. 1 is that a kind of cross-section structure of specific embodiment of the utility model ship stern tube shaft air type lubricated sealing device of oil shows
It is intended to.
In figure, 1 stern tube shaft bushing, 2 first road sealing rings, 3 transformation air chambers, 4 two road sealing rings, 5 transformer oils
Chamber, 6 three seals circles, 7 voltage stabilizing oil pockets, 8 four road sealing rings, 9 reserve fuel tanks, 10 gravity oil return pipes, 11 weights
Power fuel tank, 12 gravity petroleum pipelines, 13 gas pressure regulators, 14 appendixs, 15 transformation oil return pipes, 16 normally close valves,
17 normally open valves, 18 transformation oil pumps, 19 fuel tanks, 20 controllers, 21 stern pipes, 22 4 road seal receptacles, 23 3 roads
Seal receptacle, 24 2 road seal receptacles, 25 transformation oil sensors, 26 discharge valves, 27 drainage collecting boxs, 28 hydraulic pressure sensings
Device, 29 first road seal receptacles, 30 glands, 31 baroceptors.
Specific embodiment
As shown in figure 1, stern tube shaft bushing 1 fixation is set in the screw end of screw shaft of ship, from rear side on stern tube shaft bushing 1
End（Outside water side）To its front（Central siphon side）On to be set with first road sealing ring 2, two road sealing rings 4, three roads successively close
Seal 6 and four road sealing rings 8.Above-mentioned sealing ring all using lip-type packing, is set with the lip position of every lip-type packing
There is banding spring.
First road sealing ring 2 is press-fited on first road seal receptacle 29 by gland 30, is pressed with two on two road seal receptacles 24
Road sealing ring 4, three seals circle 6 is then press-fited on three seals seat 23, and four road sealing rings 8 are then loaded on four road seal receptacles 22
On, the lip direction of first road sealing ring 2 and two road sealing rings 4 is towards rear side（Outboard water body side）, three seals circle 6 and four roads
The lip direction of sealing ring 8 is then towards front side（Central siphon side）.Gland 30, first road seal receptacle 29, two road seal receptacles 24, three roads are close
Seal seat 23 and four road seal receptacles 22 are all set in the outside of stern tube shaft bushing 1.The rear side of first road sealing ring 2 is water body side, in Shou Lu
Form transformation air chamber 3 between sealing ring 2 and two road sealing rings 4, between two road sealing rings 4 and three seals circle 6, be provided with change
Pumping cavity 5, is provided with stable oil pocket 7 between three seals circle 6 and four road sealing rings 8.
Compressed air source such as air accumulator or air compressor machine are communicated to through gas pressure regulator 13 and appendix 14 and gas transmission duct
Transformation air chamber 3, first road seal receptacle 29 is also equipped with baroceptor 31, and baroceptor 31 stretches into or leads to transformation air chamber
3, to detect transformation air chamber 3 inner air pressure；Transformation air chamber 3 is also communicated with discharge valve 26, this discharge valve 26 adopts
Stop valve, can be by the profit emissions in transformation chamber 3 to drainage collecting box 27 by discharge valve 26.Transformation oil pump 18 warp
Cross normally open valve 17 and be communicated to transformation oil pocket 5.Transformation oil pocket 5 is also connected to reserve fuel tank 9 through normally close valve 16, under emergency conditions,
Open normally close valve 16 and gravity feed oil, reserve fuel tank 9 and stern tube shaft bushing 1 center can be relied on to transformation oil pocket 5 by reserve fuel tank 9
Between 1.5 meters 2 meters, normally close valve 16 and normally open valve 17 are stop valve to the difference in height general control of line, and transformation oil pump 18 adopts
Conventional variable pump.Voltage stabilizing oil pocket 7 is communicated to gravity tank 11 by gravity petroleum pipeline 12, this gravity tank 11 and stern tube shaft bushing
The difference in height general control of 1 centreline space, between 8 10 meters, is also communicated with gravity between gravity tank 11 and voltage stabilizing oil pocket 7
Oil return pipe 10.
On gland 30（But it is not limited on gland 30）Also it is installed with hydraulic pressure sensor 28, hydraulic pressure sensor 28 is direct
Stretch in the outer water body of ship side, to detect the pressure of stern tube shaft surrounding water, the two road seal receptacles 24 installing sealing ring are also equipped with
Transformation oil sensor 25, transformation oil sensor 25 stretches into or leads to transformation oil pocket 5, to detect the oil pressure in transformation oil pocket 5.Hydraulic pressure
Sensor 28, transformation oil sensor 25 and baroceptor 31 are all electrically connected with controller 20, controller also with gas pressure regulator
13 and transformation oil pump 18 electrically connect, drive gas pressure regulator 13 and transformation oil pump 18 to work to control, controller 20 is PLC control
Device and its drive circuit of control.
During work, with the change of shipping draft, ship side hydraulic pressure P at stern tube shaft0Also can change, controller 20 is read
The hydraulic pressure value of water intaking pressure sensor 28.And gas pressure regulator 13, baroceptor are controlled according to the numerical value of hydraulic pressure sensor 28
Air pressure P in 31 detection transformation air chambers 31,Adjust and control by this gas pressure regulator 13 and transfer in transformation air chamber 3
Air pressure is so that air pressure P in transformation air chamber 31Always it is remained above the outer hydraulic pressure P of ship side0；Gas in transformation air chamber 3
Pressure P1Hydraulic pressure P outer less than ship side0When baroceptor 31 by P1Value is sent to controller 20, and controller 20 passes through gas pressure regulator
13, to adjust and to control the air pressure transferring in transformation air chamber 3, make the air pressure in transformation air chamber 3 always remain at
Hydraulic pressure P outer more than ship side0A reasonable value in the range of.Air so in transformation air chamber 3 will be constantly to water body
Middle spilling, not only greatly reduces the friction between sealing ring and stern tube shaft bushing, and service life is greatly improved, and effectively hinders
Stop water body along stern tube shaft endosmosis, enhance the sealing property of sealing device.Same transformation oil sensor 25 records transformer oil
Lubricating oil pressure P in chamber 52, and this lubrication pressure force value is sent to controller 20, controller 20 controls and adjusts driving and becomes
Force feed case pump 18 adjusts its output flow and output oil pressure power, the follow-up adjustment of oil pressure P2 in transformation oil pocket 5, and two roads can be made close
The pressure differential of seal 4 and three seals circle 6 both sides always remains in a rational number range, can keep reliably close
Feng Xing, can effectively reduce the abrasion between sealing ring and stern tube shaft bushing again.Gas in transformation air chamber 3 in such control system
Oil pressure in pressure and transformation oil pocket 5 is all the servo-actuated change of outboard hydraulic pressure, and remains that the air pressure P1 of transformation air chamber 3 is more than ship
The hydraulic pressure P0 of outboard, the air pressure P1 in transformation air chamber 3 are also greater than the oil pressure P2 of transformation oil pocket 5, the oil pressure P2 in transformation oil pocket 5
Then it is less than the oil pressure in voltage stabilizing oil pocket 7, and the oil pressure in voltage stabilizing oil pocket 7 is less than the oil pressure in shaft lumen.Therefore, in said structure
In with ship draft change, all automatic control and adjustment therewith of the pressure in transformation air chamber 3 and transformation oil pocket 5,
So that the load of sealing surface keeps very little, the life-span of each sealing ring is significantly extended.
Claims (10)
1. a kind of ship stern tube shaft air type lubricated sealing device of oil, including stern tube shaft bushing（1）, in stern tube shaft bushing（1）On from back to front
It is set with first road sealing ring successively（2）, two road sealing rings（4）, three seals circle（6）With four road sealing rings（8）, its feature exists
In：In first road sealing ring（2）With two road sealing rings（4）Between be provided with transformation air chamber（3）, two road sealing rings（4）Close with three roads
Seal（6）Between be provided with transformation oil pocket（5）, in three seals circle（6）With four road sealing rings（8）Between be provided with voltage stabilizing oil pocket（7）；
Described transformation air chamber（3）By gas pressure regulator（13）It is connected with pressure air source, described transformation oil pocket（5）With transformer oil
Pump（18）It is connected, described voltage stabilizing oil pocket（7）With gravity tank（11）It is connected；Described gas pressure regulator（13）With transformation oil pump
（18）With controller（20）It is electrically connected, this controller（20）Also with hydraulic pressure sensor（28）, baroceptor（31）And transformation
Oil sensor（25）It is electrically connected.
2. ship stern tube shaft air type lubricated sealing device of oil according to claim 1 it is characterised in that：Described transformation air chamber
（3）In air pressure P1Hydraulic pressure P outer more than ship side0, transformation air chamber（3）In air pressure P1More than transformation oil pocket（5）In oil pressure
P2, transformation oil pocket（5）In oil pressure P2Then it is less than and stablize oil pocket（7）In oil pressure P3.
3. ship stern tube shaft air type lubricated sealing device of oil according to claim 1 it is characterised in that：Described transformation air chamber
（3）In air pressure P1Hydraulic pressure P outer less than or equal to ship side0.
4. the ship stern tube shaft air type lubricated sealing device of oil according to claim 1,2 or 3 it is characterised in that：Described transformation
Air chamber（3）On be communicated with discharge valve（26）.
5. the ship stern tube shaft air type lubricated sealing device of oil according to claim 1,2 or 3 it is characterised in that：Described head road
Sealing ring（2）, two road sealing rings（4）, three seals circle（6）With four road sealing rings（8）It is lip-type packing, first road sealing ring
（2）With two road sealing rings（4）Lip towards rear side, three seals circle（6）With four road sealing rings（8）Lip towards front side.
6. the ship stern tube shaft air type lubricated sealing device of oil according to claim 1,2 or 3 it is characterised in that：Described transformation
Oil sensor（25）For press detection sensor, this sensor is used for detecting transformation oil pocket（5）In oil pressure P2；Described air pressure transmission
Sensor（31）For press detection sensor, this sensor is for gas pressure regulator（13）In air pressure P1；Described hydraulic pressure sensor
（28）For press detection sensor, this sensor is for detecting the hydraulic pressure P outside ship side0.
7. ship stern tube shaft air type lubricated sealing device of oil according to claim 1 it is characterised in that：Described controller（20）
For PLC.
8. ship stern tube shaft air type lubricated sealing device of oil according to claim 1 it is characterised in that：Described gas pressure regulator
（13）For solenoid electric valve, described air-source is compressed air cylinder and/or air compressor machine.
9. ship stern tube shaft air type lubricated sealing device of oil according to claim 1 it is characterised in that：Described transformation oil pocket
（5）By normally close valve（16）With reserve fuel tank（9）It is connected.
10. ship stern tube shaft air type lubricated sealing device of oil according to claim 1 it is characterised in that：Described voltage stabilizing oil pocket
（7）With gravity tank（11）It is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620914168.8U CN205956384U (en) | 2016-08-22 | 2016-08-22 | Ship stern axle air formula oil lubrication sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620914168.8U CN205956384U (en) | 2016-08-22 | 2016-08-22 | Ship stern axle air formula oil lubrication sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205956384U true CN205956384U (en) | 2017-02-15 |
Family
ID=57977909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620914168.8U Expired - Fee Related CN205956384U (en) | 2016-08-22 | 2016-08-22 | Ship stern axle air formula oil lubrication sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205956384U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090227A (en) * | 2016-08-22 | 2016-11-09 | 东台船用配件有限公司 | Ship stern tube shaft air type lubricated sealing device of oil |
| CN109854241A (en) * | 2019-04-11 | 2019-06-07 | 吉林省泰嘉矿业设备有限公司 | A kind of development machine internal spraying grease differential pressure type active sealing device and method |
| CN110588941A (en) * | 2019-07-31 | 2019-12-20 | 武汉船用机械有限责任公司 | Sealing system of full-rotation propelling device |
| CN113247226A (en) * | 2021-05-11 | 2021-08-13 | 中交广州航道局有限公司 | Device for preventing oil leakage and water leakage of stern shaft seal and using method thereof |
| CN114263744A (en) * | 2021-12-20 | 2022-04-01 | 新乡中新化工有限责任公司 | Sealing structure suitable for slag water complex environment |
-
2016
- 2016-08-22 CN CN201620914168.8U patent/CN205956384U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090227A (en) * | 2016-08-22 | 2016-11-09 | 东台船用配件有限公司 | Ship stern tube shaft air type lubricated sealing device of oil |
| CN109854241A (en) * | 2019-04-11 | 2019-06-07 | 吉林省泰嘉矿业设备有限公司 | A kind of development machine internal spraying grease differential pressure type active sealing device and method |
| CN110588941A (en) * | 2019-07-31 | 2019-12-20 | 武汉船用机械有限责任公司 | Sealing system of full-rotation propelling device |
| CN113247226A (en) * | 2021-05-11 | 2021-08-13 | 中交广州航道局有限公司 | Device for preventing oil leakage and water leakage of stern shaft seal and using method thereof |
| CN113247226B (en) * | 2021-05-11 | 2022-08-19 | 中交广州航道局有限公司 | Device for preventing oil leakage and water leakage of stern shaft seal and using method thereof |
| CN114263744A (en) * | 2021-12-20 | 2022-04-01 | 新乡中新化工有限责任公司 | Sealing structure suitable for slag water complex environment |
| CN114263744B (en) * | 2021-12-20 | 2024-04-12 | 新乡中新化工有限责任公司 | Sealing structure suitable for under slag water complex environment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170215 Termination date: 20210822 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |