EP1493659A1 - Dispositif d'étanchéité pou un tube d'êtambot - Google Patents

Dispositif d'étanchéité pou un tube d'êtambot Download PDF

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Publication number
EP1493659A1
EP1493659A1 EP04076884A EP04076884A EP1493659A1 EP 1493659 A1 EP1493659 A1 EP 1493659A1 EP 04076884 A EP04076884 A EP 04076884A EP 04076884 A EP04076884 A EP 04076884A EP 1493659 A1 EP1493659 A1 EP 1493659A1
Authority
EP
European Patent Office
Prior art keywords
sealing ring
stem tube
space
sealing
seal system
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.)
Withdrawn
Application number
EP04076884A
Other languages
German (de)
English (en)
Inventor
Teunis Visser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IHC Holland NV
Original Assignee
IHC Holland NV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IHC Holland NV filed Critical IHC Holland NV
Publication of EP1493659A1 publication Critical patent/EP1493659A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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

Definitions

  • the invention relates to a seal system for sealing a stem tube with a propeller shaft that is arranged therein such that it can rotate and is supported by bearings, wherein use is made of sealing rings, each provided with a lip that runs around the propeller shaft and is in resilient contact with the shaft, wherein lubricant, such as oil, is fed to the stem tube by means of a line that is connected to an oil reservoir that is some distance above the stem tube, wherein a first sealing ring is fitted close to the end of the stem tube that is furthest inwards and a second sealing ring is fitted close to the end where the propeller is located and the lips of these sealing rings are oriented towards one another.
  • sealing rings each provided with a lip that runs around the propeller shaft and is in resilient contact with the shaft
  • lubricant such as oil
  • the oil in the stem tube is maintained at a pressure that is higher than the outboard water pressure.
  • the reservoir for the oil is installed a certain distance above the water line. Adequate lubrication of the lips of the sealing rings can be obtained by this means. Water is also prevented from being able to penetrate from the outside into the stem tube, which could damage the bearings.
  • the pressure exerted by the oil on the lips of the sealing rings can give rise to more rapid wear of the lips or of the bush or the shaft than is desired.
  • the aim of the invention is, now, to eliminate these drawbacks and to this end it provides for a space to be formed on that side of the stem tube where the propeller is located, to which space a suction pump is connected and a vent pipe that is in communication with the atmosphere, which space is delimited, on the one side, by the said second sealing ring and, on the other side, by a third sealing ring, the lip of which runs in the direction of the propeller.
  • At least a fourth sealing ring oriented in the same direction is fitted next to the third sealing ring to form, between these sealing rings, a chamber to which clean water can be fed under pressure for lubrication of these sealing rings.
  • the oil reservoir is a relatively short distance above the stem tube, which distance, for example, can be between 1 and 2 metres.
  • the installation is appreciably simplified as a result.
  • a vent pipe is needed, which preferably will extend to above the water line.
  • a vent pipe will also be connected to the stem tube. What is achieved by this means is that the stem tube is completely filled with oil, so that the bearings cannot be damaged as a result of too little oil in the stem tube.
  • the suction line is connected to the bottom of the space and the vent pipe to the top.
  • seal system is intended for a vessel with a deep draught, it is possible according to a further development of the invention to fit a fifth sealing ring oriented in the opposing direction in the space at atmospheric pressure against the second sealing ring, which seals the space at atmospheric pressure against the stem tube, such that oil can be fed dropwise from the stem tube to the space between the lips of the second and fifth sealing rings.
  • a sixth sealing ring is fitted between the third and fourth sealing ring, which sixth sealing ring is oriented in the same direction as the third and fourth sealing ring, so that the space between the third and fourth sealing ring is divided and water under pressure is fed to the chamber between the fourth and the sixth sealing ring and the space between the third and the sixth sealing ring is connected to a water reservoir that is some distance above the stem tube.
  • Fig. 1 shows, diagrammatically, a seal system 1 that is installed in a stem tube 2, which is joined to the hull of a vessel at 3 and in which a propeller shaft 5 is supported by means of bearings 4.
  • Bushes 6 are located locally on the propeller shaft 5, it being possible for the hub of the propeller to be fixed to the left-hand bush 6 by means of bolts. As indicated in the righthand part of the drawing, a bush 6 can be mounted on a flange 8 joined to the propeller shaft 5.
  • the stem tube 2 is filled with oil via a line 9 from the oil reservoir 10 that is a distance H of approximately 1 to a few metres above the stem tube 2 and is provided with a vent pipe 11.
  • the stem tube 2 is provided with the vent pipe 12.
  • Oil is prevented from flowing out of the stem tube 2 to the interior of the vessel by means of a first sealing ring 13.
  • the other end of the stem tube 2 is sealed by a second sealing ring 14.
  • the space 16 is, on the one hand, in communication with the atmosphere by means of the line 17 and, on the other hand, with a reservoir 19 by means of the line 18.
  • a suction pump 20 that feeds the fluid sucked in, which can be either oil or water, to a storage tank, which is not shown, is connected to the reservoir 19.
  • the sealing rings 13, 14 and 15, and also the sealing rings that are still to be described in more detail, are not directly on the propeller shaft 5 but on the bushes 6 fitted thereon. By this means wear on the propeller shaft 5 is prevented from occurring, whilst the bushes 6 can be replaced if any wear occurs.
  • a fourth sealing ring 21 next to the third sealing ring 15, so that a chamber 22 is formed to which clean water under pressure can be fed from a reservoir 25 by means of a line 23 and a water pump 24.
  • a vent pipe 26 is also connected to the reservoir 25.
  • the sealing rings 15 and 21 are lubricated and cooled with water by this means and surface water, that could be contaminated, is prevented from being able to reach these sealing rings.
  • Fig. 2 shows, diagrammatically, a seal system that is suitable in particular for a vessel with a deep draught. Corresponding components are indicated by the same reference numerals as used in Fig. 1.
  • a fifth sealing ring 30 is now fitted by the second sealing ring 14 so that a space 31 is produced between the lips of these two sealing rings. Oil is able to flow dropwise from the stem tube 2 to the space 31 via the line 32 using a throttle.
  • a sixth sealing ring 33 is fitted between the third sealing ring 15 and the fourth sealing ring 21 so that a chamber 22 is produced to which water under pressure can be fed from the reservoir 25 by means of the pump 24.
  • a space 34 is formed between the sixth sealing ring 33 and the third sealing ring 15, to which clean water can flow form the reservoir 25 via the line 35. This water is thus not under elevated pressure, so that the third sealing ring 15 will be subjected to a lesser load.
  • the space 34 is in communication with a vent pipe 36.
  • the fourth sealing ring 21 can optionally be designed as a dirt stop ring, but there can also be a separate dirt stop ring.
  • Valves and the like which are not shown in more detail, can be fitted in various lines in order, inter alia, to prevent back-flow of medium. Furthermore, there will be stopcocks in the various lines in connection with maintenance and fitting or dismantling of components.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Sealing Devices (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • Sealing Of Bearings (AREA)
EP04076884A 2003-07-02 2004-06-29 Dispositif d'étanchéité pou un tube d'êtambot Withdrawn EP1493659A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1023796 2003-07-02
NL1023796A NL1023796C2 (nl) 2003-07-02 2003-07-02 Afdichtstelsel voor het afdichten van een schroefaskoker met een daardoor heen lopende schroefas.

Publications (1)

Publication Number Publication Date
EP1493659A1 true EP1493659A1 (fr) 2005-01-05

Family

ID=33432534

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04076884A Withdrawn EP1493659A1 (fr) 2003-07-02 2004-06-29 Dispositif d'étanchéité pou un tube d'êtambot

Country Status (3)

Country Link
EP (1) EP1493659A1 (fr)
CN (1) CN1576167A (fr)
NL (1) NL1023796C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009130368A1 (fr) * 2008-04-24 2009-10-29 Abb Oy Agencement d’étanchéité pour arbre d’hélice
EP2878865A4 (fr) * 2012-07-27 2016-03-09 Eagle Ind Co Ltd Dispositif d'étanchéité de tube d'étambot

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103921916B (zh) * 2014-05-05 2016-04-13 李四维 一种用于水下推进器的轴机械密封组件
CN109641644B (zh) * 2016-06-22 2020-12-25 瓦锡兰伊比利亚半岛公司 用于支撑海洋船舶的推进器轴的装置及维修该装置的方法
CN107504182B (zh) * 2017-09-27 2024-05-17 南京创力传动机械有限公司 一种耐磨式轴密封装置及高速齿轮
CN111746769A (zh) * 2020-07-02 2020-10-09 阮华平 一种立管式船舶防水传动装置
CN112339970B (zh) * 2020-09-29 2022-08-05 沪东中华造船(集团)有限公司 一种船舶尾管密封装置高精度安装结构
CN114084330A (zh) * 2021-12-13 2022-02-25 中国船舶重工集团公司第七0四研究所 轴式配油器水密型箱体

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3122406A1 (de) * 1981-06-05 1982-12-23 Howaldtswerke-Deutsche Werft Ag Hamburg Und Kiel, 2300 Kiel Abdichtungsanordnung, insbesondere fuer hintere stevenrohrabdichtungen
GB2174156A (en) * 1985-03-22 1986-10-29 Ross Ind Gmbh A stern-tube seal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3122406A1 (de) * 1981-06-05 1982-12-23 Howaldtswerke-Deutsche Werft Ag Hamburg Und Kiel, 2300 Kiel Abdichtungsanordnung, insbesondere fuer hintere stevenrohrabdichtungen
GB2174156A (en) * 1985-03-22 1986-10-29 Ross Ind Gmbh A stern-tube seal

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SUPREME Stern tube Seals and Propeller Shaft Bearings

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009130368A1 (fr) * 2008-04-24 2009-10-29 Abb Oy Agencement d’étanchéité pour arbre d’hélice
EP2878865A4 (fr) * 2012-07-27 2016-03-09 Eagle Ind Co Ltd Dispositif d'étanchéité de tube d'étambot
US9868502B2 (en) 2012-07-27 2018-01-16 Eagle Industry Co., Ltd. Stern tube sealing device

Also Published As

Publication number Publication date
NL1023796C2 (nl) 2005-01-04
CN1576167A (zh) 2005-02-09

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