CN210218694U - Comprehensive stern tube sealing lubricating oil system - Google Patents
Comprehensive stern tube sealing lubricating oil system Download PDFInfo
- Publication number
- CN210218694U CN210218694U CN201920914637.XU CN201920914637U CN210218694U CN 210218694 U CN210218694 U CN 210218694U CN 201920914637 U CN201920914637 U CN 201920914637U CN 210218694 U CN210218694 U CN 210218694U
- Authority
- CN
- China
- Prior art keywords
- lubricating oil
- stern tube
- stern
- cabinet
- seal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
A comprehensive stern tube sealing lubricating oil system comprises a stern tube, wherein a stern seal and a bow seal are respectively arranged at two ends of the stern tube, the stern tube is respectively connected with a lubricating oil circulating cabinet and a discharge collecting unit through hoses, the lubricating oil circulating cabinet is connected with a forced circulation pump set, and the forced circulation pump set is connected with the stern tube through a pipeline to form a first circulation network. The stern tube is also connected with a portable lubricating oil tank and a bow sealing oil tank, and the stern tube and the portable lubricating oil tank are connected to form a second circulation network. The portable lubricating oil tank can be placed at the first position, the second position or the third position. The invention uses the stern tube air-tight sealing lubricating oil system as the main part, and the traditional stern tube oil-tight sealing lubricating oil system is a standby comprehensive lubricating oil system, when a fault occurs, the traditional stern tube oil-tight sealing lubricating oil system can be used for replacing the stern tube air-tight sealing lubricating oil system, the utility model discloses perfectly avoid when the air supply system breaks down, the traditional stern tube air-tight sealing lubricating oil system can have the possibility of seawater flowing backwards, and guarantee the smooth operation of the ship on the sea.
Description
Technical Field
The invention relates to the field of ship construction and ship design, in particular to a design of a ship stern tube airtight lubricating oil system.
Background
In the shipbuilding industry, along with the technological progress and development, more shipowners select hermetic seals for stern tube sealing in order to better protect the environment. However, the conventional stern tube hermetic sealing lubricating oil system has a disadvantage that when a hermetic gas supply system fails, a stern sealing seal ring may not withstand seawater pressure, and particularly, a major accident of seawater backflow may occur under the condition of full-load operation or severe sea conditions of a ship.
Disclosure of Invention
In order to solve the above problems, the invention provides a comprehensive stern tube sealing lubricating oil system, aiming to achieve the purposes of protecting the hermetic sealing ring of the stern tube and preventing serious accidents of seawater backflow, and the adopted technical scheme is as follows:
a comprehensive stern tube sealing lubricating oil system comprises a stern tube, wherein a stern seal and a bow seal are respectively arranged at two ends of the stern tube, and the stern tube is respectively connected with a lubricating oil circulating cabinet and a discharge collecting unit through hoses; the lubricating oil circulation cabinet is connected with a forced circulation pump set through a pipeline, the forced circulation pump set is connected with the stern tube through a pipeline to form a first circulation network, a fourth normally-open stop valve is arranged on the outgoing path of the first circulation network, and a third normally-open stop valve is arranged on the return path of the first circulation network.
The stern tube is further connected with a portable lubricating oil cabinet and a bow sealing oil cabinet through pipelines, the stern tube is connected with the portable lubricating oil cabinet to form a second circulation net, a path of the second circulation net is provided with a sixth normally closed stop valve, and a loop of the second circulation net is provided with a fifth normally closed stop valve.
When the ratio of (H1+ H2)/2 is less than or equal to H and less than or equal to H2, the portable lubricating oil cabinet is kept to be placed at the first position; when H1 is more than or equal to H < (H1+ H2)/2, the portable lubricating oil cabinet is placed at the second position; when H < H1, the portable lube cabinet is placed in a third position.
In the formula, H: height of the ship's sailing tail draft to the stern shaft centerline, H1: height of ship ballast draft from stern shaft centerline, H2: the full-load draught height of the ship is far away from the centerline of the stern shaft. The stern tube, the first circulating net, the discharge collecting unit, the air supply unit and the bow sealing oil tank form a stern tube air-tight lubricating oil system, and the stern tube, the second circulating net and the bow sealing oil tank form a traditional stern tube oil-tight lubricating oil system. H is the ship tail draft height monitored by the ship draft monitor-the height of the center line of the stern shaft from the ship body baseline.
The comprehensive stern tube sealing lubricating oil system further comprises three placing positions designed according to different boat types, wherein the portable lubricating oil cabinet is placed at the first position, the second position or the third position according to the boat type H2-H1 which is larger than or equal to 8m, and the two placing positions are designed according to the boat type H2-H1 which is smaller than 8 m.
In the above integrated stern tube sealing lubricating oil system, further, the first position is 1.15 × H2+3m from the centerline of the stern tube shaft, the second position is 1.15 × H1+ H2)/2+3m from the centerline of the stern tube shaft, and the third position is 1.15 × H1+3m from the centerline of the stern tube shaft.
The comprehensive stern tube sealing lubricating oil system is further limited, and the system is further provided with a group of air supply units, and the air supply units are respectively connected with the stern tube and the lubricating oil circulating cabinet through pipelines.
The comprehensive stern tube sealing lubricating oil system is further limited, a first normally open stop valve is arranged between the air supply unit and the stern tube, and the first normally open stop valve is arranged at the upper end of a front casting of the stern tube.
The comprehensive stern tube sealing lubricating oil system is further limited, a second normally-open stop valve is arranged between the discharge collection unit and the stern tube, and the second normally-open stop valve is arranged at the lower end of a front casting of the stern tube. The first and second normally open stop valve positions have no special requirements, and are preferably arranged at the upper end and the lower end of the stern tube front casting respectively and arranged at the positions of the air-tight air supply inlet and the air-tight air supply outlet.
The comprehensive stern tube sealing lubricating oil system is further limited in that a fourth normally-open stop valve is arranged between the lubricating oil circulation cabinet and the stern tube.
The comprehensive stern tube sealing lubricating oil system is further limited, and a portable lubricating oil cabinet base is arranged at the first position, the second position and the third position.
The integrated stern tube sealing lubricating oil system is further limited in that the stern seal is air-tight and is provided with three sealing rings, namely #1, #2 and # 3.
The integrated stern tube sealing lubricating oil system is further limited in that the bow seal is provided with two sealing rings, namely #4 and # 5.
Under normal conditions, the first circulation network, the gas supply unit, the discharge collection unit and the bow sealing oil tank are operated, the second circulation network is closed, and when a fault occurs, the first circulation network, the gas supply unit and the discharge collection unit are closed, and the second circulation network is started. The system is a comprehensive lubricating oil system which takes a stern tube airtight lubricating oil system as a main part and takes a traditional stern tube airtight lubricating oil system as a standby part.
When the stern tube air-tight sealing lubricating oil system breaks down or the stern seal #1 sealing ring is damaged, the first normally-open stop valve and the second normally-open stop valve are closed immediately, and the first normally-open stop valve is closed to prevent seawater from entering the air supply system, so that the original air supply system is protected. The purpose of closing the second normally open stop valve is to prevent seawater from entering the blowdown collection cabinet, protecting the blowdown system. And then closing the third normally-open stop valve and the fourth normally-open stop valve, and aiming at isolating the forced circulation pump set, the lubricating oil circulation cabinet and the air supply unit from the traditional stern tube oil sealing lubricating oil system. And opening the fifth normally closed stop valve and the sixth normally closed stop valve, wherein the purpose is to start the traditional stern tube oil seal lubricating oil system, and press the lubricating oil of the portable lubricating oil cabinet into an oil cavity between the stern seals # 2 and #3 and the stern tube through gravity, so that the sealing ring works normally and comfortably and the seawater is prevented from flowing backwards. For convenience of operation, it is preferable that the third and fifth normally open stop valves are disposed in the vicinity of the forced circulation pump group outlet, and the fourth and sixth normally closed stop valves are disposed in the vicinity of the lubricant circulation tank.
Meanwhile, the current ship draft height is monitored, and the portable lubricating oil tank is adjusted to a proper position, so that the balance pressure on two sides of the stern sealing ring is ensured, and major accidents of seawater backflow are prevented. The initial position of portable lubricating oil tank places at the primary importance, and when the trouble takes place, according to the afterbody draft height of current boats and ships navigation, confirms the position that portable lubricating oil tank placed:
when the ratio of (H1+ H2)/2 is less than or equal to H and less than or equal to H2, the portable lubricating oil cabinet is kept to be placed at the first position; when H1 is more than or equal to H < (H1+ H2)/2, the portable lubricating oil cabinet is placed at the second position; when H < H1, the portable lube cabinet is placed in a third position.
According to the material particularity of the sealing ring and the best working balance pressure of the sealing ring, namely P oil is approximately equal to P seawater plus 0.15-0.03 Mpa, due to different types of ship types, the portable lubricating oil tank has different full-load draft and ballast draft heights, and the proper height of the portable lubricating oil tank is obtained through the balance pressure through research and analysis. For the ship type with the height of ship ballast water from the center line of the stern shaft being less than 8 meters, two positions are arranged on the portable lubricating oil tank, namely a first position and a third position. Three portable lubricating oil cabinets are arranged for the ship type with the height of the ship full load from the center line of the stern shaft-the height of the ship ballast water from the center line of the stern shaft being more than or equal to 8 m. In order to ensure the safe operation of the ship lubricating oil system, the initial position of the portable lubricating oil tank is suggested to be placed at the first position.
When the air supply system is in fault maintenance and returns to a normal state, the fifth and sixth normally closed stop valves are closed firstly, so as to terminate the service of the traditional stern tube oil sealing lubricating oil system. And opening the first and second normally open stop valves, wherein the purpose is to press the air supply unit into the air cavity between the stern seals #1 and #2 in an air pressure mode, so that the #1 sealing ring is in a working state. And opening the third and fourth normally open stop valves to start the forced circulation pump set, and aiming at transporting the lubricating oil of the lubricating oil circulation cabinet to an oil cavity between a stern tube and stern seals # 2 and #3 to formally start the stern tube air-tight seal lubricating oil system. And (4) observing whether the working pressure of the air supply unit is normal and whether a large amount of seawater enters the discharge collection unit, if the working pressure is normal and the discharge collection unit does not have a large amount of seawater, indicating that the stern tube hermetic seal lubricating oil system works normally. If a large amount of seawater exists, the stern seal #1 sealing ring is possibly damaged, and the conventional stern tube oil seal lubricating oil system needs to be changed again, and the maintenance of the stern seal is carried out when the ship arrives safely.
Stern tube airtight sealing lubricating oil system: one path of air of the air supply unit enters an air cavity between a stern sealing ring #1 and a sealing ring # 2 from an air inlet at the upper part of a stern tube front casting and is led back to the discharge unit from an air outlet at the lower part of the stern tube front casting, and the air supply pressure is generally about P air to P seawater (ship draft height-stern shaft center line height pressure) + 0.01-0.02 Mpa (mainly according to the characteristics of a factory sealing material). The forced circulation pump set can transport oil of the lubricating oil circulation cabinet to an oil cavity between a stern sealing ring # 2 and a stern tube between stern sealing rings # 3, the oil pressure is generally P oil ≈ P gas + 0.015-0.03 Mpa, and the pressure in each cavity is automatically adjusted through seawater pressure. And lubricating oil of the bow sealing oil tank is injected into an oil cavity between the bow sealing ring # 4 and the sealing ring # 5 through gravity, and the oil pressure is 0.009-0.018 Mpa. Therefore, the stern sealing ring #1, the sealing ring # 2, the sealing ring # 3, the bow sealing ring # 4 and the sealing ring # 5 can comfortably run on a shaft system through the adjustment of air pressure and oil pressure, the stern sealing plays a role in preventing seawater from entering a stern tube at the tail part, and the bow sealing plays a role in preventing lubricating oil from flowing out. The working liquid level of the lubricating oil circulation cabinet is 2-2.5 m away from the center line of the stern shaft, the working liquid level of the bow sealing oil cabinet is 1-2 m away from the center line of the stern shaft, and a lubricating oil loop of the stern tube and the stern seal is lower than the low liquid level height of the stern tube lubricating oil circulation cabinet. The positions of the air supply unit and the forced circulation pump set are arranged according to the requirements of manufacturers (relevant to the equipment type selection). The position of the discharge collection unit is required to be lower than the central line of the stern shaft, so that the working state of the sealing ring is detected, the air pressure of the air supply system is fed back, and the pressure of each chamber of the stern seal is adjusted.
When the air supply system breaks down, the pressure of an air cavity formed by the stern sealing ring #1 and the sealing ring # 2 is 0, the pressure of an oil cavity between the stern sealing ring # 2 and the sealing ring # 3 is only 0.018-0.03 MPa of the height of the lubricating oil circulation cabinet, according to the material particularity of the sealing rings, the best work balance pressure of the sealing ring #1 is about P gas and P seawater plus 0.01-0.02 MPa, so that the sealing ring #1 works under high load, and the sealing ring #1 is easy to damage when the ship runs under heavy load and severe sea conditions. After the sealing ring #1 is damaged, the pressure (P seawater) on the left side of the sealing ring # 2 is larger than the pressure (P lubricating oil circulation cabinet) of the oil cavities of the sealing ring # 2 and the sealing ring # 3 on the right side, and a major accident of seawater backflow can occur. In order to prevent accidents, when the stern tube air-tight seal lubricating oil system breaks down or the sealing ring #1 is damaged, the stern tube air-tight seal lubricating oil system is immediately isolated to start the traditional stern tube oil-tight seal lubricating oil system.
Traditional stern tube oil seals lubricating oil system: the height of the portable lubricating oil tank is adjusted according to ship draught, oil pressure in an oil cavity between the seal rings # 2 and #3 and an oil pressure in a stern tube are P oil and approximately equal to P seawater plus 0.015-0.03 Mpa, so that the stern seal ring # 2 and the seal ring # 3 are in a comfortable working state, and seawater is prevented from entering a stern tube lubricating oil system.
In the comprehensive stern tube sealing lubricating oil system, a first normally-open stop valve is arranged between an air supply unit of the comprehensive stern tube sealing lubricating oil system and the inlet connection of a stern sealing ring #1 and a sealing ring # 2 air cavity, and a second normally-open stop valve is arranged between the outlet of the stern sealing ring #1 and the sealing ring # 2 air cavity and the connection of a discharge collection unit. A third normally open stop valve is arranged between the forced circulation pump set and the connection of the stern tube and the oil inlets of the stern sealing ring # 2 and the oil cavity of the sealing ring # 3; and a fourth normally-open stop valve is arranged between the lubricating oil circulation cabinet and the stern tube and between the lubricating oil circulation cabinet and the oil outlets of the stern sealing ring # 2 and the sealing ring # 3 oil cavity. And a fifth normally closed stop valve is arranged between the portable lubricating oil tank and the oil inlets of the stern tube, the stern sealing ring # 2 and the sealing ring # 3 oil cavity, and a sixth normally closed stop valve is arranged between the portable lubricating oil tank and the oil inlets of the stern tube, the stern sealing ring # 2 and the sealing ring # 3 oil cavity. When the stern tube air-tight sealing oil system breaks down or a stern sealing #1 sealing ring is damaged, the first and second normally-open stop valves are immediately closed, and the purpose is to prevent seawater from entering the air supply system and the discharge system. And then closing the third normally-open stop valve and the fourth normally-open stop valve, and aiming at isolating the forced circulation pump set, the lubricating oil circulation cabinet, the air supply unit and the traditional stern tube oil sealing lubricating oil system. And opening the fifth normally closed stop valve and the sixth normally closed stop valve, and aiming at starting the traditional stern tube oil sealing lubricating oil system.
When the gas supply system is maintained, the traditional stern tube oil sealing lubricating oil system is closed, the stern tube gas sealing lubricating oil system is started, whether a large amount of seawater enters the gas supply unit and the discharge collection unit is observed, if the working pressure is normal, and the discharge collection unit does not have a large amount of seawater and lubricating oil, the stern tube gas sealing lubricating oil system works normally. If a large amount of seawater exists, the stern seal #1 sealing ring is possibly damaged, the conventional stern tube oil seal lubricating oil system needs to be changed again, and the stern seal needs to be maintained when the ship arrives safely.
The invention takes the stern tube air-tight lubricating oil system as the main part and the traditional stern tube oil-tight lubricating oil system as the standby comprehensive lubricating oil system, and when a fault occurs, the traditional stern tube oil-tight lubricating oil system can be used for replacing the stern tube air-tight lubricating oil system.
Drawings
FIG. 1 is a diagram of the overall system structure of the stern tube, the gas supply unit, the lubricating oil circulation cabinet, the forced circulation pump and the portable lubricating oil cabinet;
wherein: the device comprises a portable lubricating oil cabinet 1, a hose 2, a lubricating oil circulation cabinet 3, a fourth normally-open stop valve 4, a sixth normally-closed stop valve 5, a forced circulation pump set 6, a third normally-open stop valve 7, a fifth normally-closed stop valve 8, a second normally-open stop valve 9, a leakage collection unit 10, a bow seal 11, a bow seal oil cabinet 12, a first normally-open stop valve 13, a stern tube front casting 14, a stern tube 15, a stern seal 16, an air supply unit 17, a first position A, a second position B and a third position C;
h: the height of the ship sailing tail draft to the center line of the stern shaft;
h1: the height of the ship ballast water from the center line of the stern shaft;
h2: the height of the ship from the center line of the stern shaft in full load;
h3: the distance between the center line of the stern shaft and the baseline height of the ship body.
Detailed Description
Example 1
As shown in figure 1, the height of the center line of a stern shaft of a 30.8 ten thousand ton crude oil ship from a ship body base line is H3-5.5 m, the height of a full load from the center line of the stern shaft is H2-16.95 m, the height of ship ballast water from the center line of the stern shaft is H1-5.2 m, and H2-H1 is more than or equal to 8 m. The stern tube 15 is connected with an air supply unit 17, a lubricating oil circulating cabinet 3, a forced circulation pump unit 6, a stern sealing oil cabinet 12 and a discharge collection unit 10 through a hose 2 to form a complete stern tube air-tight sealing lubricating oil system. The stern tube, the lubricating oil circulation cabinet and the forced circulation pump set form a first circulation network, a fourth normally-open stop valve 4 is arranged on a path of the first circulation network, and a third normally-open stop valve 7 is arranged on a loop of the first circulation network. The stern tube is provided with a stern tube front casting 14, a two-lip seal ring type bow seal 11 is arranged at the stern tube front casting, and a three-lip seal ring type stern seal 16 is arranged at the position far away from the stern tube front casting. A first normally open stop valve 13 is arranged between the air supply unit 17 and the stern tube, and a second normally open stop valve 9 is arranged between the discharge collection unit 10 and the stern tube. The bow sealing oil tank is connected with the bow seal on the stern tube.
The stern tube is connected with a portable lubricating oil cabinet 1 through a hose, the stern tube and the portable lubricating oil cabinet form a second circulating net, a sixth normally closed stop valve 5 is arranged on a going path of the second circulating net, and a fifth normally closed stop valve 8 is arranged on a loop of the second circulating net. The portable lubricating oil cabinet is provided with three placing positions, namely a first position A, a second position B and a third position C, wherein the first position A is 22.5 meters away from a stern shaft central line, the second position B is 12.8 meters away from the stern shaft central line, the third position C is 9 meters away from the stern shaft central line, and the first position A, the second position B and the third position C are all provided with lubricating oil cabinet bases.
The initial position of the portable lubricating oil cabinet is a first position, when a fault occurs, the first normally open stop valve, the second normally open stop valve, the third normally open stop valve and the fourth normally open stop valve are immediately closed, the fifth normally closed stop valve and the sixth normally closed stop valve are opened, the draft height H of the tail of the ship is monitored through a ship draft monitor, the height H of the ship sailing tail draft to the center line of a stern shaft is obtained and is H-H3, and when the height H is not less than 11.075m and not more than 16.95m, the portable lubricating oil cabinet is placed at a first position A; when H is more than or equal to 5.2m and less than 11.075m, the portable lubricating oil cabinet is placed at a second position B; and when H is less than 5.2m, determining the position of the portable lubricating oil tank according to the current ship navigation tail draft height at the third position C where the portable lubricating oil tank is placed.
Example 2
As shown in figure 1, the height of the center line of a stern shaft of a 30.8 ten thousand ton crude oil ship from a ship body base line is H3-4.5 m, the height of a full load from the center line of the stern shaft is H2-12.8 m, the height of ship ballast water from the center line of the stern shaft is H1-5.2 m, and H2-H1 is less than 8 m. The stern tube 15 is connected with an air supply unit 17, a lubricating oil circulating cabinet 3, a forced circulation pump unit 6, a stern sealing oil cabinet 12 and a discharge collection unit 10 through a hose 2 to form a complete stern tube air-tight sealing lubricating oil system. The stern tube, the lubricating oil circulation cabinet and the forced circulation pump set form a first circulation network, a fourth normally-open stop valve 4 is arranged on a path of the first circulation network, and a third normally-open stop valve 7 is arranged on a loop of the first circulation network. The stern tube is provided with a stern tube front casting 14, a two-lip seal ring type bow seal 11 is arranged at the stern tube front casting, and a three-lip seal ring type stern seal 16 is arranged at the position far away from the stern tube front casting. A first normally open stop valve 13 is arranged between the air supply unit 17 and the stern tube, and a second normally open stop valve 9 is arranged between the discharge collection unit 10 and the stern tube. The bow sealing oil tank is connected with the bow seal on the stern tube.
The stern tube is connected with a portable lubricating oil cabinet 1 through a hose, the stern tube and the portable lubricating oil cabinet form a second circulating net, a sixth normally closed stop valve 5 is arranged on a going path of the second circulating net, and a fifth normally closed stop valve 8 is arranged on a loop of the second circulating net. The portable lubricating oil cabinet is provided with three placing positions, namely a first position A, a second position B and a third position C, wherein the first position A is 17.72 meters away from a stern shaft central line, the second position B is 13.44 meters away from the stern shaft central line, the third position C is 8.98 meters away from the stern shaft central line, and lubricating oil cabinet bases are arranged at the first position A, the second position B and the third position C.
The portable lubricating oil tank initial position is the first position, when the trouble takes place, close first normally open stop valve immediately, the second normally open stop valve, the third normally open stop valve, the fourth normally open stop valve, open fifth normally closed stop valve, the sixth normally closed stop valve, survey the boats and ships afterbody draft height H through the boats and ships draft monitor, and obtain the height H of boats and ships navigation afterbody draft to the stern axle central line H-H3, when 9m is not less than H and not more than 12.8m, the first position A that portable lubricating oil tank placed, when H < 5.2m, the third position C that portable lubricating oil tank placed, according to the afterbody draft height of current boats and ships navigation, confirm the position that portable lubricating oil tank placed.
The invention perfectly avoids the possibility that the traditional stern tube air-tight sealing lubricating oil system can cause seawater backflow when the air supply system has a fault, and ensures the smooth operation of the ship on the sea.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (10)
1. The utility model provides a comprehensive stern tube seals lubricating oil system which characterized in that: the system is provided with a stern tube (15), two ends of the stern tube are respectively provided with a stern seal (16) and a bow seal (11), and the stern tube is respectively connected with a lubricating oil circulating cabinet (3) and a discharge collection unit (10) through a hose (2); the lubricating oil circulating cabinet is connected with a forced circulation pump set (6) through a pipeline, the forced circulation pump set is connected with the stern tube through a pipeline to form a first circulating network, a fourth normally-open stop valve (4) is arranged on a going path of the first circulating network, and a third normally-open stop valve (7) is arranged on a first circulating network loop;
the stern tube is also connected with a portable lubricating oil cabinet (1) and a bow sealing oil cabinet (12) through pipelines, the stern tube is connected with the portable lubricating oil cabinet to form a second circulation network, a path of the second circulation network is provided with a sixth normally closed stop valve (5), and a loop of the second circulation network is provided with a fifth normally closed stop valve (8);
when the ratio of (H1+ H2)/2 is less than or equal to H and less than or equal to H2, the portable lubricating oil cabinet is kept to be placed at the first position;
when H1 is more than or equal to H < (H1+ H2)/2, the portable lubricating oil cabinet is placed at the second position;
when H < H1, the portable lubricating oil tank is placed at a third position;
in the formula, H: the height of the draft at the navigation tail part of the ship to the central line of the stern shaft,
h1: the ballast draft height of the ship is far away from the center line of the stern shaft,
h2: the full-load draught height of the ship is far away from the centerline of the stern shaft.
2. The integrated stern tube seal lubricating oil system of claim 1, wherein: the portable lubricating oil cabinet is placed at the first position A or the second position B or the third position C for the ship type H2-H1 being more than or equal to 8m, and is placed at the first position or the third position for the ship type H2-H1 being less than 8 m.
3. A comprehensive stern tube sealing grease system as claimed in claim 1 or 2, wherein: the first position is 1.15H 2+3m from the centerline of the stern tube shaft, the second position is 1.15H (H1+ H2)/2+3m from the centerline of the stern tube shaft, and the third position is 1.15H 1+3m from the centerline of the stern tube shaft.
4. The integrated stern tube seal lubricating oil system of claim 1, wherein: the system is also provided with a group of gas supply units (17), and the gas supply units are respectively connected with the stern tube and the lubricating oil circulation cabinet through pipelines.
5. The integrated stern tube seal lubricant system of claim 4, wherein: a first normally open stop valve (13) is arranged between the air supply unit and the stern tube, and the first normally open stop valve is arranged at the upper end of a front casting (14) of the stern tube.
6. The integrated stern tube seal lubricating oil system of claim 1, wherein: and a second normally open stop valve (9) is arranged between the discharge collection unit and the stern tube and is arranged at the lower end of the front casting of the stern tube.
7. The integrated stern tube seal lubricating oil system of claim 1, wherein: and a fourth normally open stop valve is arranged between the lubricating oil circulation cabinet and the stern tube.
8. The integrated stern tube seal lubricating oil system of claim 1, wherein: and portable lubricating oil cabinet bases are arranged at the first position, the second position and the third position.
9. The integrated stern tube seal lubricating oil system of claim 1, wherein: the stern seal is an air seal with three sealing rings, which are respectively #1, #2 and # 3.
10. The integrated stern tube seal lubricating oil system of claim 1, wherein: the bow seal is provided with two sealing rings, which are respectively #4 and # 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920914637.XU CN210218694U (en) | 2019-06-18 | 2019-06-18 | Comprehensive stern tube sealing lubricating oil system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920914637.XU CN210218694U (en) | 2019-06-18 | 2019-06-18 | Comprehensive stern tube sealing lubricating oil system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210218694U true CN210218694U (en) | 2020-03-31 |
Family
ID=69932500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920914637.XU Active CN210218694U (en) | 2019-06-18 | 2019-06-18 | Comprehensive stern tube sealing lubricating oil system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210218694U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345254A (en) * | 2019-06-18 | 2019-10-18 | 大连船舶重工集团有限公司 | A kind of comprehensive stern seal of tube oil system |
-
2019
- 2019-06-18 CN CN201920914637.XU patent/CN210218694U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345254A (en) * | 2019-06-18 | 2019-10-18 | 大连船舶重工集团有限公司 | A kind of comprehensive stern seal of tube oil system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103591300B (en) | Sealing arrangement structure for the rotation axis of propeller for vessels | |
| CN210218694U (en) | Comprehensive stern tube sealing lubricating oil system | |
| CN205075995U (en) | Ballast tank ballast water water supply system | |
| CN110345254A (en) | A kind of comprehensive stern seal of tube oil system | |
| CN213443058U (en) | Marine low-temperature fresh water cooling system | |
| CN108088622A (en) | A kind of ink-jet tracer equipment for the underwater leakage detection of dam | |
| CN201517611U (en) | Novel oil lubricating stern shaft sealing device | |
| KR101825651B1 (en) | Fuel offloading system of offshore platform | |
| GB2138917A (en) | Flexible hose | |
| US11821519B2 (en) | Seal device | |
| CN210153299U (en) | Automatic exhaust air valve | |
| CN207599051U (en) | A kind of ventilative check-valves | |
| US7628172B2 (en) | Hose connection device | |
| CN103410184B (en) | A kind of topside suction inlet of dredge boat and a kind of dredge boat | |
| CN212776726U (en) | Height difference removing oil tank and forced lubricating system | |
| CN214662111U (en) | Cooling seawater inlet and outlet valve of marine power generation diesel engine | |
| CN211139567U (en) | Ship cabin washing water discharge system | |
| CN103758731A (en) | Air compressor emptying valve | |
| CN220221105U (en) | Submarine valve box | |
| CN214614310U (en) | Water intake structure with maintenance cover | |
| CN208472828U (en) | A kind of fire-fighting network management system with exhaust structure | |
| RU2778797C1 (en) | Method and layout for sealing screw shaft located under water | |
| CN214578085U (en) | Automatic hydraulic oil filling device for hydraulic oil tank | |
| JPH07242198A (en) | Stern tube sealing device | |
| CN210397718U (en) | Tail shaft sealing system of polar region navigation ship |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |