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Comprehensive stern pipe sealing lubricating oil system

A lubricating oil system, a comprehensive technology, applied in engine sealing, propulsion components, ship construction, etc., can solve the problems that sealing rings cannot withstand seawater pressure, seawater backflow, etc.

Pending Publication Date: 2019-10-18
DALIAN SHIPBUILDING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a disadvantage of the traditional stern tube air seal lubricating oil system, that is, when the air seal air supply system fails, the seal ring of the stern seal may not be able to withstand seawater pressure, especially when the ship is fully loaded or under severe sea conditions, it may A major accident involving seawater intrusion

Method used

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  • Comprehensive stern pipe sealing lubricating oil system

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Experimental program
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Effect test

Embodiment 1

[0036] Such as figure 1 As shown, for a 308,000-ton crude oil carrier, the height of the centerline of the stern shaft from the hull baseline is H3=5.5 meters, the height of the full load from the center line of the stern shaft is H2=16.95 meters, and the height of the ship’s ballast water from the center line of the stern shaft is H1= 5.2 meters, H2-H1≥8m. The stern tube 15 is connected with an air supply unit 17, a lubricating oil circulation tank 3, a forced circulation pump unit 6, a stern sealing oil tank 12, and a discharge collection unit 10 through a hose 2, forming a complete stern tube air-sealed lubricating oil system. The stern pipe, the lubricating oil circulation cabinet and the forced circulation pump set form the first circulation network, the outlet of the first circulation network is provided with a fourth normally open stop valve 4, and the loop of the first circulation network is provided with a third normally open stop valve 7. The stern tube has a front ...

Embodiment 2

[0040] Such as figure 1 As shown, for a 308,000-ton crude oil carrier, the height of the centerline of the stern shaft from the hull baseline is H3=4.5 meters, the height of the full load from the center line of the stern shaft is H2=12.8 meters, and the height of the ship’s ballast water from the center line of the stern shaft is H1= 5.2 meters, H2-H1<8m. The stern tube 15 is connected with an air supply unit 17, a lubricating oil circulation tank 3, a forced circulation pump unit 6, a stern sealing oil tank 12, and a discharge collection unit 10 through a hose 2, forming a complete stern tube air-sealed lubricating oil system. The stern pipe, the lubricating oil circulation cabinet and the forced circulation pump set form the first circulation network, the outlet of the first circulation network is provided with a fourth normally open stop valve 4, and the loop of the first circulation network is provided with a third normally open stop valve 7. The stern tube has a front c...

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Abstract

The invention provides a comprehensive stern pipe sealing lubricating oil system. The system is provided with a stern pipe. A stern seal and a bow seal are arranged at the two ends of the stern pipe correspondingly. The stern pipe is connected with a lubricating oil circulating cabinet and a draining and collecting unit through hoses. The lubricating oil circulating cabinet is connected with a forced circulating pump set. The forced circulating pump set is connected with the stern pipe through a pipeline, and a first circulating net is formed. The stern pipe is further connected with a portable lubricating oil cabinet and a bow sealing oil cabinet. The stern pipe is connected with the portable lubricating oil cabinet to form a second circulating net. The portable lubricating oil cabinet can be placed at the first position or the second position or the third position. According to the system, the stern pipe air sealing lubricating oil system is taken as a main part, a traditional sternpipe oil sealing lubricating oil system serves as a spare comprehensive lubricating oil system, and when faults break down, the traditional stern pipe oil sealing lubricating oil system can be used for replacing the stern pipe air sealing lubricating oil system. The system perfectly avoids the possibility that when an air supply system breaks down, seawater back filling occurs to the traditional stern pipe air sealing lubricating oil system, and it is ensured that ships operate smoothly on sea.

Description

technical field [0001] The invention relates to the fields of ship construction and ship design, in particular to the design of a ship stern tube air seal lubricating oil system. Background technique [0002] In the shipbuilding industry, with the advancement and development of science and technology, more and more shipowners choose hermetic seals for stern tube seals in order to better protect the environment. However, there is a disadvantage of the traditional stern tube air seal lubricating oil system, that is, when the air seal air supply system fails, the seal ring of the stern seal may not be able to withstand seawater pressure, especially when the ship is fully loaded or under severe sea conditions, it may A major accident involving seawater intrusion occurred. Contents of the invention [0003] In order to solve the above problems, the present invention provides a comprehensive stern tube sealing lubricating oil system, which aims to protect the sealing ring of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/46
CPCF16J15/46B63H2023/327
Inventor 安乐宫国玺黄志勇王运才杨述闯刘永歆王海波李养辉吕冬冰沈会宇王鹏印管庆祥王家支孙晓晖陈丰银王伟刘钢李世用
Owner DALIAN SHIPBUILDING IND
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