CN110345254A - A kind of comprehensive stern seal of tube oil system - Google Patents
A kind of comprehensive stern seal of tube oil system Download PDFInfo
- Publication number
- CN110345254A CN110345254A CN201910525883.0A CN201910525883A CN110345254A CN 110345254 A CN110345254 A CN 110345254A CN 201910525883 A CN201910525883 A CN 201910525883A CN 110345254 A CN110345254 A CN 110345254A
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- stern
- lubricating oil
- pipe
- valve
- seal
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- 239000003921 oil Substances 0.000 claims abstract description 117
- 239000010687 lubricating oil Substances 0.000 claims abstract description 88
- 238000007789 sealing Methods 0.000 claims abstract description 88
- 238000005266 casting Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000003651 drinking water Substances 0.000 claims description 2
- 235000020188 drinking water Nutrition 0.000 claims description 2
- 239000013535 sea water Substances 0.000 description 16
- 238000013461 design Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 3
- 239000000969 carrier Substances 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/46—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H23/00—Transmitting power from propulsion power plant to propulsive elements
- B63H23/32—Other parts
- B63H23/321—Bearings or seals specially adapted for propeller shafts
- B63H2023/327—Sealings specially adapted for propeller shafts or stern tubes
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Architecture (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
A kind of comprehensive stern seal of tube oil system, system has stern pipe, stern pipe both ends are respectively arranged with that stern is close and bow sealing, stern pipe is connected with lubricating oil sump tank, collector unit of releasing respectively by hose, lubricating oil sump tank is connect with forced circulation pump group, forced circulation pump group is connect by pipeline with stern pipe, and first circulation net is formed.Stern pipe is also connected with portable lubricating oil tank and bow sealing Oil Tank, stern pipe connect to form second circulation net with portable lubricating oil tank.Portable lubricating oil tank is available to be placed on first position or the second position or the third place.The present invention is based on stern pipe hermetic seal oil system, traditional stern pipe oil seal oil system is spare comprehensive oil system, when faulty generation, stern pipe hermetic seal oil system can be replaced with traditional stern pipe oil seal oil system, the present invention is perfectly avoided when air supply system breaks down, a possibility that inwelling can occur for traditional stern pipe hermetic seal oil system, ensure that the afloat trouble-free operation of ship.
Description
Technical field
The present invention relates to ship construction and Ship Design fields, and in particular to a kind of ship stern pipe hermetic seal oil system
Design.
Background technique
In shipping industry, with scientific and technological progress and development, in order to preferably protect environment, more shipowners are to stern pipe
Sealing selection hermetic seal.But there are a drawbacks for traditional stern pipe hermetic seal oil system, be exactly when the gas supply of hermetic seal
The sealing ring of system jam, stern sealing possibly can not keep out seawater pressure, especially in shipful operation or badly
In the case where sea situation, it may occur however that the major accident of inwelling.
Summary of the invention
To solve the above problems, the present invention provides a kind of comprehensive stern seal of tube oil system, it is intended to reach protection stern
The sealing ring of pipe hermetic seal prevents the purpose that inwelling major accident occurs, and used technical solution is:
A kind of comprehensive stern seal of tube oil system, system have a stern pipe, stern pipe both ends be respectively arranged with stern sealing and
Bow sealing, the stern pipe are connected with lubricating oil sump tank, collector unit of releasing respectively by hose；The lubricating oil sump tank passes through
Pipeline is connect with forced circulation pump group, and the forced circulation pump group is connect by pipeline with the stern pipe, forms first circulation net,
The outlet of the first circulation net is provided with the 4th normally opened shut-off valve, and first circulation net circuit is provided with the normally opened cut-off of third
Valve.
The stern pipe is also connected with portable lubricating oil tank and bow by pipeline and seals Oil Tank, the stern pipe with it is described portable
Lubricating oil tank connects to form second circulation net, and the outlet of the second circulation net is provided with the 6th normally closed cut-off valve, and described second follows
The circuit of looped network is provided with the 5th normally closed cut-off valve.
As (H1+H2)/2≤H≤H2, portable lubricating oil tank holding is placed on first position；When H1≤H < (H1+H2)/
When 2, portable lubricating oil tank is placed on the second position；As H < H1, portable lubricating oil tank is placed on the third place.
In formula, H: height of the ship's navigation after draft to stern tube shaft center line, H1: ballast for cruising absorbs water height distance stern tube shaft
The height of middle line, H2: the height of shipful drinking water height distance stern tube shaft middle line.The stern pipe, first circulation net, collection of releasing
Unit, air supply unit, bow sealing Oil Tank form stern pipe hermetic seal oil system, and stern pipe, second circulation net, bow sealing Oil Tank are formed
Traditional stern pipe oil seal oil system.Ship after draft height-stern tube shaft center line that H=drauht monitor detects
Apart from hull baseline height.
A kind of above-mentioned comprehensive stern seal of tube oil system further according to different ship types, designs portable lubricating oil
Cabinet placement location is different, and for the ship type of H2-H1 >=8m, there are three placement locations for portable lubricating oil tank design, described portable
Lubricating oil tank is placed on first position or the second position or the third place, for the ship type of H2-H1 < 8m, portable lubricating oil tank design
There are two placement location, the portable lubricating oil tank is placed on first position or the third place.
A kind of above-mentioned comprehensive stern seal of tube oil system, further, the first position is in stern tube shaft
Heart line 1.15*H2+3m, the second position are apart from stern tube shaft center line 1.15* (H1+H2)/2+3m, and the third place is
Apart from stern tube shaft center line 1.15*H1+3m.
A kind of above-mentioned comprehensive stern seal of tube oil system, further limits, and system also has one group of air supply unit, described
Air supply unit is connected with stern pipe, lubricating oil sump tank respectively by pipeline.
A kind of above-mentioned comprehensive stern seal of tube oil system, further limits, is equipped between the air supply unit and stern pipe
Casting upper end is arranged before stern pipe in first normally opened shut-off valve, the first normally opened shut-off valve.
A kind of above-mentioned comprehensive stern seal of tube oil system, further limits, described to release between collector unit and stern pipe
Equipped with the second normally opened shut-off valve, casting lower end is arranged before stern pipe in the second normally opened shut-off valve.First and second normally opened cut-offs
Valve position is preferably arranged in casting top and bottom before stern pipe, setting is in hermetic seal gas supply import and goes out without particular/special requirement
Mouth position.
A kind of above-mentioned comprehensive stern seal of tube oil system, further limits, in the lubricating oil sump tank and the stern pipe
Between be provided with the 4th normally opened shut-off valve.
A kind of above-mentioned comprehensive stern seal of tube oil system, further limits, the first position, the second position,
Portable lubricating oil tank base is provided at the third place.
A kind of above-mentioned comprehensive stern seal of tube oil system, further limits, and the stern is sealed into hermetic seal, has three
Sealing ring is #1, #2, #3 respectively.
A kind of above-mentioned comprehensive stern seal of tube oil system, further limits, and the bow sealing has two seals, point
It is not #4, #5.
Under normal circumstances, operation first circulation net, air supply unit, collector unit of releasing, bow seal Oil Tank to the present invention, close
Second circulation net closes first circulation net, air supply unit, collector unit of releasing when faulty generation, starts second circulation
Net.This system is based on stern pipe hermetic seal oil system, and traditional stern pipe oil seal oil system is spare comprehensive lubricating oil
System.
When stern pipe hermetic seal oil system breaks down or stern sealing #1 sealing ring damages, first normally opened section is closed immediately
The purpose of only valve and the second normally opened shut-off valve, the first normally opened shut-off valve of closing is that seawater is prevented to enter air supply system, and it is former to play protection
The effect of air supply system.The purpose for closing the second normally opened shut-off valve is that seawater is prevented to enter collection cabinet of releasing, and protects bleed-off system.
It is then shut off the normally opened shut-off valve of third and the 4th normally opened shut-off valve, the purpose is to by forced circulation pump group, lubricating oil sump tank and confession
Gas unit is isolated with traditional stern pipe oil seal oil system.Open the 5th normally closed cut-off valve and the 6th normally closed cut-off valve, purpose
To enable traditional stern pipe oil seal oil system, by the lubricating oil of portable lubricating oil tank by gravity be pressed into stern sealing #2 and #3 it
Between oil pocket and stern pipe in, so that sealing ring is normally comfortably worked, prevent inwelling.In order to easy to operate, it is preferable that third
Normally opened shut-off valve and the 5th normally closed cut-off valve are arranged in forced circulation pump group near exit, the 4th normally opened shut-off valve and the 6th normally closed
Shut-off valve is arranged near lubricating oil sump tank.
Current drauht height is monitored simultaneously, adjusts portable lubricating oil tank to suitable position, to guarantee stern sealing ring
The balance pressure of two sides, prevents the major accident of inwelling.The initial position of portable lubricating oil tank is located in first position,
When faulty generation confirms the position that portable lubricating oil tank is placed according to the after draft height of current ship's navigation:
As (H1+H2)/2≤H≤H2, portable lubricating oil tank holding is placed on first position；When H1≤H < (H1+H2)/
When 2, portable lubricating oil tank is placed on the second position；As H < H1, portable lubricating oil tank is placed on the third place.
The present invention is the sea P oil ≈ P according to the material particularity of sealing ring and its best functioning equalization pressure of sealing ring
Water+0.15~0.03Mpa has different full-load draft and ballast draft height due to different types of ship type, through research point
Logical overbalance pressure is analysed, obtains the height of suitable portable lubricating oil tank.Height ship for shipful apart from stern tube shaft middle line
The ship type of 8 meters of height < of the ship ballast water apart from stern tube shaft middle line portable lubricating oil tank is arranged two positions, respectively
First position and the third place.Height of the height-ballast water for ship apart from stern tube shaft middle line for shipful apart from stern tube shaft middle line
The position of three portable lubricating oil tanks is arranged in the ship type of >=8 meters of degree.To guarantee the safe operation of ship oil system, portable cunning
The initial position suggestion of Oil Tank, which is placed above the other things, sets.
After air supply system breakdown maintenance restores normal condition, it is first shut off the 5th and the 6th normally closed cut-off valve, purpose
It is the service for terminating traditional stern pipe oil seal oil system.The first and second normally opened shut-off valves are opened, it is single the purpose is to supply
Air cavity between first air pressure indentation stern sealing #1 and #2, keeps #1 sealing ring in running order.Open third and fourth normally opened section
Only valve, opens function forced circulation pump group, purpose be exactly by the lubricating oil transportation by lighter of lubricating oil sump tank to stern pipe and stern sealing #2 and #3 it
Between oil pocket, start stern pipe hermetic seal oil system formally.Notice whether observation air supply unit operating pressure is normal and releases
Whether collector unit has a large amount of seawater to enter, and as operating pressure is normal, and collector unit of releasing does not have going out for a large amount of seawater
It is existing, illustrate that stern pipe hermetic seal oil system is working properly.If there is a large amount of seawater, illustrate that stern sealing #1 sealing ring may damage,
It need to be changed to traditional stern pipe oil seal oil system again, safety of ship is waited to carry out the maintenance of stern sealing to port.
Stern pipe hermetic seal oil system: the air all the way of air supply unit enters stern sealing from casting upper inlet port before stern pipe
Air cavity between sealing ring #1 and sealing ring #2, and lead back from casting lower part gas outlet before stern pipe to vent unit, supply gas pressure
Generally P gas ≈ P seawater (drauht height-stern tube shaft centerline height pressure)+0.01~0.02Mpa is (main according to producer
The characteristic of sealing material).The oil barge of lubricating oil sump tank can be transported to stern sealing sealing ring #2 and sealing ring #3 by forced circulation pump group
Between oil pocket and stern pipe in, oil pressure is generally P+0.015~0.03Mpa of oil ≈ P gas, and each indoor pressure of chamber passes through
Seawater pressure automatic adjustment.The lubricating oil that bow seals Oil Tank injects the oil between bow sealing sealing ring #4 and sealing ring #5 by gravity
Chamber, oil pressure are 0.009~0.018Mpa.Stern sealing sealing ring #1 in this way, sealing ring #2, sealing ring #3, bow sealing sealing
Circle #4 and sealing ring #5 is comfortably run in shafting by air pressure and the adjusting of oil pressure, and stern sealing, which plays tail portion, prevents seawater
Into stern pipe, bow sealing plays the principle for preventing lubricating oil from flowing out.The work liquid level of the lubricating oil sump tank is away from stern tube shaft center
The work liquid level that line 2~2.5m. bow seals Oil Tank is the lubricating oil circuit that wherein stern pipe and stern seal away from stern tube shaft 1~2m of center line
To be lower than the low liquid level height of stern tube lubricating oil sump tank.The position of air supply unit and forced circulation pump group requires to arrange according to producer
(related with lectotype selection).Release collector unit status requirement lower than stern tube shaft center line, it is therefore an objective to detect the work of sealing ring
State, feeds back the air pressure of air supply system, and adjustment stern seals each chamber pressure.
When air supply system breaks down, it is 0 that stern, which seals the air cavity pressure that sealing ring #1 and sealing ring #2 is formed, and stern is close at this time
Be sealed the oil pocket between seal #2 and sealing ring #3 pressure be the pressure 0.018 of lubricating oil sump tank position height~
0.03Mpa should be the sea P gas ≈ P according to the material particularity of sealing ring and its best functioning equalization pressure of sealing ring #1
Water+0.01~0.02Mpa is run so sealing ring #1 is faced with high load capacity work in ship heavy duty and sea situation harsh conditions, close
Seal #1 is easily damaged.After sealing ring #1 damage, it may appear that sealing ring #2 left pressure (P seawater) is greater than right side sealing ring #2
With the oil pocket pressure (P lubricating oil sump tank) of sealing ring #3, the major accident that inwelling will occur occurs.To prevent accident from sending out
It is raw, when stern pipe hermetic seal oil system breaks down or sealing ring #1 damage, the starting of stern pipe hermetic seal oil system is isolated immediately
Traditional stern pipe oil seal oil system.
Traditional stern pipe oil seal oil system: adjusting portable lubricating oil tank height according to drauht, make sealing ring #2, close
Oil pressure is P oil ≈ P+0.015~0.03Mpa of seawater in oil pocket and stern pipe between seal #3, makes stern sealing sealing ring #2 and close
Seal #3 is in comfortable working condition, prevents seawater from entering stern pipe oil system.
It is described to seal sealing ring #1 and sealing ring #2 air cavity in comprehensive stern seal of tube oil system, air supply unit and stern
Import connection between be provided with the first normally opened shut-off valve, the outlet of stern sealing sealing ring #1 and sealing ring #2 air cavity with release
The second normally opened shut-off valve is provided between collector unit connection.Forced circulation pump group and stern pipe and stern sealing sealing ring #2 and sealing
The normally opened shut-off valve of third is provided between the oil inlet connection of circle #3 oil pocket；Lubricating oil sump tank and stern pipe and stern seal sealing ring #2
The 4th normally opened shut-off valve is provided between connecting with the oil outlet of sealing ring #3 oil pocket.The portable lubricating oil tank and stern pipe and stern
It is provided with the 5th normally closed cut-off valve between the connection of the oil inlet of sealing sealing ring #2 and sealing ring #3 oil pocket, is sealed with stern pipe and stern
The 6th normally closed cut-off valve is provided between the connection of the oil outlet of sealing ring #2 and sealing ring #3 oil pocket.When stern pipe hermetic seal lubricating oil system
When system breaks down or stern sealing #1 sealing ring damages, the first and second normally opened shut-off valves are closed immediately, it is therefore an objective to prevent seawater
Into air supply system and bleed-off system.It is then shut off the normally opened shut-off valve of third and the 4th normally opened shut-off valve, it is strong the purpose is to be isolated
System circulation pump group, lubricating oil sump tank and air supply unit and traditional stern pipe oil seal oil system.Open the 5th normally closed cut-off valve and
6th normally closed cut-off valve, the purpose is to enable traditional stern pipe oil seal oil system.
It finishes, can be operated by above-mentioned inverted order when air supply system repairs, close traditional stern pipe oil seal oil system, start stern
Pipe hermetic seal oil system, and observe air supply unit operating pressure and whether collector unit of releasing has a large amount of seawater to enter,
As operating pressure is normal, and collector unit of releasing does not have the appearance of a large amount of seawater and lubricating oil, illustrates stern pipe hermetic seal lubricating oil system
It unites working properly.If there is a large amount of seawater, illustrates that stern sealing #1 sealing ring may damage, it is close that traditional stern pipe oil need to be changed to again
Oil system is sealed, safety of ship is waited to repair to port to stern sealing.
For the present invention based on stern pipe hermetic seal oil system, traditional stern pipe oil seal oil system is spare comprehensive cunning
Oil system can replace stern pipe hermetic seal oil system, the present invention with traditional stern pipe oil seal oil system when faulty generation
It perfectly avoids when air supply system breaks down, the possibility of inwelling can occur for traditional stern pipe hermetic seal oil system
Property, it ensure that the afloat trouble-free operation of ship.
Detailed description of the invention
Fig. 1 is that stern pipe, air supply unit, lubricating oil sump tank, forced circulation pump, portable lubricating oil tank are connected total system knot
Composition；
Wherein: portable lubricating oil tank 1, hose 2, lubricating oil sump tank 3, the 4th normally opened shut-off valve 4, the 6th normally closed cut-off valve 5,
The normally opened shut-off valve 7 of forced circulation pump group 6, third, the 5th normally closed cut-off valve 8, the second normally opened shut-off valve 9, collector unit 10 of releasing,
Casting 14, stern pipe 15, stern seal 16, air supply unit before bow sealing 11, bow sealing Oil Tank 12, the first normally opened shut-off valve 13, stern pipe
17, first position A, second position B, the third place C；
H: height of the ship's navigation after draft to stern tube shaft center line；
H1: height of the ballast water for ship apart from stern tube shaft middle line；
H2: height of the shipful apart from stern tube shaft middle line；
H3: stern tube shaft center line is apart from hull baseline height.
Specific embodiment
Embodiment 1
As shown in Figure 1, a kind of 30.8 ten thousand tons of crude oil carriers, stern tube shaft center line is H3=5.5 meters apart from hull baseline height, full
The height carried apart from stern tube shaft middle line is H2=16.95 meters, H1=5.2 meters of height of the ballast water for ship apart from stern tube shaft middle line, H2-H1
≥8m.Stern pipe 15 is connected with air supply unit 17, lubricating oil sump tank 3, forced circulation pump group 6, stern by hose 2 and seals Oil Tank
12, it releases collector unit 10, forms a complete stern pipe hermetic seal oil system.Stern pipe, lubricating oil sump tank and forced circulation
Pump group forms first circulation net, and the outlet of first circulation net is provided with the 4th normally opened shut-off valve 4, and first circulation net circuit is provided with
The normally opened shut-off valve 7 of third.The stern pipe has casting 14 before stern pipe, is provided with two lip seal ring bows at casting before the stern pipe
Sealing 11 seals 16 far from three lip seal ring sterns are provided at casting before the stern pipe.It is set between air supply unit 17 and stern pipe
It is equipped with the first normally opened shut-off valve 13, releases and is provided with the second normally opened shut-off valve 9 between collector unit 10 and stern pipe.Bow seals Oil Tank
It is connected with the bow sealing on stern pipe.
Stern pipe is connected with a portable lubricating oil tank 1 by hose, and stern pipe and portable lubricating oil tank form second circulation net,
The outlet of second circulation net is provided with the 6th normally closed cut-off valve 5, and the circuit of second circulation net is provided with the 5th normally closed cut-off valve 8.
The portable lubricating oil tank design is first position A, second position B, the third place C respectively there are three placement location, described the
One position A is apart from 22.5 meters of stern tube shaft center line, and the second position B is the third position apart from 12.8 meters of stern tube shaft center line
Setting C is apart from 9 meters of stern tube shaft center line, and first position A, second position B, the third place C are provided with lubricating oil tank base.
Portable lubricating oil tank initial position is first position, when faulty generation, closes the first normally opened shut-off valve, the immediately
Two normally opened shut-off valves, the normally opened shut-off valve of third, the 4th normally opened shut-off valve open the 5th normally closed cut-off valve, the 6th normally closed cut-off valve,
Ship after draft height h is detected by drauht monitor, and obtains ship's navigation after draft to stern tube shaft center line
Height H=h-H3, as 11.075m≤H≤16.95m, first position A that portable lubricating oil tank is placed；As 5.2m≤H <
11.075m, the second position B that portable lubricating oil tank is placed；As the third place C that H < 5.2m, portable lubricating oil tank are placed, press
According to the after draft height of current ship's navigation, the position that portable lubricating oil tank is placed is confirmed.
Embodiment 2
As shown in Figure 1, a kind of 30.8 ten thousand tons of crude oil carriers, stern tube shaft center line is H3=4.5 meters apart from hull baseline height, full
The height carried apart from stern tube shaft middle line is H2=12.8 meters, H1=5.2 meters of height of the ballast water for ship apart from stern tube shaft middle line, H2-H1
< 8m.Stern pipe 15 is connected with air supply unit 17, lubricating oil sump tank 3, forced circulation pump group 6, stern by hose 2 and seals Oil Tank
12, it releases collector unit 10, forms a complete stern pipe hermetic seal oil system.Stern pipe, lubricating oil sump tank and forced circulation
Pump group forms first circulation net, and the outlet of first circulation net is provided with the 4th normally opened shut-off valve 4, and first circulation net circuit is provided with
The normally opened shut-off valve 7 of third.The stern pipe has casting 14 before stern pipe, is provided with two lip seal ring bows at casting before the stern pipe
Sealing 11 seals 16 far from three lip seal ring sterns are provided at casting before the stern pipe.It is set between air supply unit 17 and stern pipe
It is equipped with the first normally opened shut-off valve 13, releases and is provided with the second normally opened shut-off valve 9 between collector unit 10 and stern pipe.Bow seals Oil Tank
It is connected with the bow sealing on stern pipe.
Stern pipe is connected with a portable lubricating oil tank 1 by hose, and stern pipe and portable lubricating oil tank form second circulation net,
The outlet of second circulation net is provided with the 6th normally closed cut-off valve 5, and the circuit of second circulation net is provided with the 5th normally closed cut-off valve 8.
The portable lubricating oil tank design is first position A, second position B, the third place C respectively there are three placement location, described the
One position A is apart from 17.72 meters of stern tube shaft center line, and the second position B is the third apart from 13.44 meters of stern tube shaft center line
Position C is apart from 8.98 meters of stern tube shaft center line, and first position A, second position B, the third place C are provided with lubricating oil tank base.
Portable lubricating oil tank initial position is first position, when faulty generation, closes the first normally opened shut-off valve, the immediately
Two normally opened shut-off valves, the normally opened shut-off valve of third, the 4th normally opened shut-off valve open the 5th normally closed cut-off valve, the 6th normally closed cut-off valve,
Ship after draft height h is detected by drauht monitor, and obtains ship's navigation after draft to stern tube shaft center line
Height H=h-H3, as 9m≤H≤12.8m, the first position A that portable lubricating oil tank is placed, when H < 5.2m, portable lubricating oil
The third place C that cabinet is placed confirms the position that portable lubricating oil tank is placed according to the after draft height of current ship's navigation.
The present invention is perfectly avoided when air supply system breaks down, and traditional stern pipe hermetic seal oil system can occur
A possibility that inwelling, ensure that the afloat trouble-free operation of ship.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art within the technical scope of the present disclosure, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the scope of protection of the present invention.
Claims (10)
1. a kind of comprehensive stern seal of tube oil system, it is characterised in that: system has stern pipe (15), and stern pipe both ends are set respectively
Be equipped with stern sealing (16) and bow sealing (11), the stern pipe pass through hose (2) respectively with lubricating oil sump tank (3), release and collect list
First (10) are connected；The lubricating oil sump tank is connect by pipeline with forced circulation pump group (6), and the forced circulation pump group passes through
Pipeline is connect with the stern pipe, forms first circulation net, the outlet of the first circulation net is provided with the 4th normally opened shut-off valve
(4), first circulation net circuit is provided with the normally opened shut-off valve of third (7)；
The stern pipe by pipeline be also connected with portable lubricating oil tank (1) and bow sealing Oil Tank (12), the stern pipe and it is described just
The formula lubricating oil tank of taking connects to form second circulation net, and the outlet of the second circulation net is provided with the 6th normally closed cut-off valve (5), described
The circuit of second circulation net is provided with the 5th and closes shut-off valve (8)；
As (H1+H2)/2≤H≤H2, portable lubricating oil tank holding is placed on first position；
As H1≤H < (H1+H2)/2, portable lubricating oil tank is placed on the second position；
As H < H1, portable lubricating oil tank is placed on the third place；
In formula, H: ship's navigation after draft to the height of stern tube shaft center line,
H1: ballast for cruising absorbs water the height of height distance stern tube shaft middle line,
H2: the height of shipful drinking water height distance stern tube shaft middle line.
2. a kind of comprehensive stern seal of tube oil system as described in claim 1, it is characterised in that: for H2-H1 >=8m's
Ship type, the portable lubricating oil tank is placed on first position A or second position B or the third place C, for the ship of H2-H1 < 8m
Type, the portable lubricating oil tank are placed on first position or the third place.
3. a kind of comprehensive stern seal of tube oil system as claimed in claim 1 or 2, it is characterised in that: the first position
Be apart from stern tube shaft center line 1.15*H2+3m, the second position be apart from stern tube shaft center line 1.15* (H1+H2)/2+3m,
The third place is apart from stern tube shaft center line 1.15*H1+3m.
4. a kind of comprehensive stern seal of tube oil system as described in claim 1, it is characterised in that: system also has one group of confession
Gas unit (17), the air supply unit are connected with stern pipe, lubricating oil sump tank respectively by pipeline.
5. a kind of comprehensive stern seal of tube oil system as claimed in claim 4, it is characterised in that: the air supply unit and stern
The first normally opened shut-off valve (13) is equipped between pipe, casting (14) upper end is arranged before stern pipe in the first normally opened shut-off valve.
6. a kind of comprehensive stern seal of tube oil system as described in claim 1, it is characterised in that: the collector unit of releasing
The second normally opened shut-off valve (9) is equipped between stern pipe, casting lower end is arranged before stern pipe in the second normally opened shut-off valve.
7. a kind of comprehensive stern seal of tube oil system as described in claim 1, it is characterised in that: in the lubricating oil sump tank
The 4th normally opened shut-off valve is provided between the stern pipe.
8. a kind of comprehensive stern seal of tube oil system as described in claim 1, it is characterised in that: the first position, institute
It states the second position, be provided with portable lubricating oil tank base at the third place.
9. a kind of comprehensive stern seal of tube oil system as described in claim 1, it is characterised in that: the stern is sealed into airtight
Envelope has three seals circle, is #1, #2, #3 respectively.
10. a kind of comprehensive stern seal of tube oil system as described in claim 1, it is characterised in that: the bow sealing has
Two seals are #4, #5 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910525883.0A CN110345254B (en) | 2019-06-18 | 2019-06-18 | Comprehensive stern tube sealing lubricating oil system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113022836A (en) * | 2021-03-26 | 2021-06-25 | 广州文冲船厂有限责任公司 | Stern tube water removal system |
| CN113074168A (en) * | 2021-03-26 | 2021-07-06 | 广州文冲船厂有限责任公司 | Hydraulic oil dewatering system and method for side thruster |
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| 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 |
| CN107458570A (en) * | 2017-08-04 | 2017-12-12 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Marine rear shaft sealing device, ship power output mechanism and ship |
| CN210218694U (en) * | 2019-06-18 | 2020-03-31 | 大连船舶重工集团有限公司 | Comprehensive stern tube sealing lubricating oil system |
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| JP2003026094A (en) * | 2001-07-11 | 2003-01-29 | Cobelco Marine Engineering:Kk | Water lubricating type stern tube sealing device |
| CN202100717U (en) * | 2011-05-27 | 2012-01-04 | 中国长江航运集团江东船厂 | Dual-medium stern sealing system of ship shaft system |
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| CN107458570A (en) * | 2017-08-04 | 2017-12-12 | 上海船舶研究设计院（中国船舶工业集团公司第六0四研究院） | Marine rear shaft sealing device, ship power output mechanism and ship |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113022836A (en) * | 2021-03-26 | 2021-06-25 | 广州文冲船厂有限责任公司 | Stern tube water removal system |
| CN113074168A (en) * | 2021-03-26 | 2021-07-06 | 广州文冲船厂有限责任公司 | Hydraulic oil dewatering system and method for side thruster |
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| CN110345254B (en) | 2024-07-26 |
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