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AU608393B2 - An assembly for sealing the propeller shaft of a ship - Google Patents
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AU608393B2 - An assembly for sealing the propeller shaft of a ship - Google Patents

An assembly for sealing the propeller shaft of a ship Download PDF

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Publication number
AU608393B2
AU608393B2 AU26645/88A AU2664588A AU608393B2 AU 608393 B2 AU608393 B2 AU 608393B2 AU 26645/88 A AU26645/88 A AU 26645/88A AU 2664588 A AU2664588 A AU 2664588A AU 608393 B2 AU608393 B2 AU 608393B2
Authority
AU
Australia
Prior art keywords
pressure
annular chamber
sealing
seal assembly
ship
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.)
Expired
Application number
AU26645/88A
Other versions
AU2664588A (en
Inventor
Gunter Pietsch
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.)
SKF Marine GmbH
Original Assignee
Blohm and Voss GmbH
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 Blohm and Voss GmbH filed Critical Blohm and Voss GmbH
Publication of AU2664588A publication Critical patent/AU2664588A/en
Application granted granted Critical
Publication of AU608393B2 publication Critical patent/AU608393B2/en
Assigned to BLOHM & VOSS INDUSTRIE GMBH reassignment BLOHM & VOSS INDUSTRIE GMBH Alteration of Name(s) in Register under S187 Assignors: BLOHM & VOSS A.G.
Anticipated expiration legal-status Critical
Expired legal-status Critical Current

Links

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
    • 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
    • B63H23/34—Propeller shafts; Paddle-wheel shafts; Attachment of propellers on shafts
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B33/00—Features common to bolt and nut
    • F16B33/002—Means for preventing rotation of screw-threaded elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • F01C1/10—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F01C1/103—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C20/00—Control of, monitoring of, or safety arrangements for, machines or engines
    • F01C20/24—Control of, monitoring of, or safety arrangements for, machines or engines characterised by using valves for controlling pressure or flow rate, e.g. discharge valves
    • F01C20/26—Control of, monitoring of, or safety arrangements for, machines or engines characterised by using valves for controlling pressure or flow rate, e.g. discharge valves using bypass channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121—Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/08—Regulating by delivery pressure
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
    • F16B43/001—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts for sealing or insulation
    • 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
    • F16J15/002—Sealings comprising at least two sealings in succession
    • F16J15/004—Sealings comprising at least two sealings in succession forming of recuperation chamber for the leaking fluid
    • 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
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/40—Sealings between relatively-moving surfaces by means of fluid
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/955—Locked bolthead or nut
    • Y10S411/974—Side lock
    • Y10S411/984—Longitudinal
    • Y10S411/99—Washer tongue-held

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Computer Hardware Design (AREA)
  • Sealing Devices (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • Sealing Of Bearings (AREA)

Description

R1,8 3 9 S F Ref: 79610 COMMONWEALTH OF AUSTRALIA PATENTS ACT 1952 COMPLETE SPECIFICATION
(ORIGINAL)
IThis document contains the amendments made under Section 49 and is correct for printing FOR OFFICE USE: Class Int Class Complete Specification Lc.'ed: Accepted: Published: SPriority: Related Art: Name and Address of Applicant: Blohm Voss AG Hermann-Blohm-Strasse 3 2000 Hamburg 11 FEDERAL REPUBLIC OF GERMANY Spruson Ferguson, Patent Attorneys Level 33 St Martins Tower, 31 Market Street Sydney, New South Wales, 2000, Australia Address for Service: Complete Specification for the invention entitled: An Assembly for Sealing the Propeller Shaft of a Ship The following statement is a full description of this invention, including the best method of performing it known to me/us 5845/3 if a i of a -2- TECHNICAL FIELD The invention relates to an assembly for sealing the propeller shaft ship.
BACKGROUND OF THE INVENTION In sealing assemblies of the typo described in German Patent Application 2212165, the pressure of the compressed gas is slightly higher than the pressure of the medium to be sealed off so that an escape of small amounts of gas from the annular chamber into the adjacent space occurs. In this way, the release of lubricant into the sea water is precluded but the release of gas into the lubricant is not avoided, and this implies a gradual emulsification of the lubricant, which naturally reduces its lubricating effect. Besides that, in these known sealing assemblies, a continuous adaptation of the gas pressure to the fluctuations of the external water pressure is not provided in the region of the sealing means so that, for instance, when the external water pressures increases while the ship is being loaded, sea water can enter into the annular chamber and from it into the lubricant and further reduce the lubricating effect.
In order to overcome these shortcomings, it has been suggested (German Patent Application 3502395) to adjust the pressure of the gas in the annular chamber so that the pressure is always lower than the pressure of the lubricant in the space of the lubricant but suffices for urging leaked liquid from the annular chamber through a duct into a collecting vessel.
In such sealing assemblies, no provisions are made to keep the ,2j pressure of the compressed air always below the respective external water a pressure so that it may happen that, when the external wator pressure decreases, while the ship is being unloaded, a pressure differential develops between the annular chamber and the outside water so that leaking liquid can penetrate from the annular chamber into the sea water and cause pollution.
Further, it is a disadvantage of the known configuration that, since the inlet duct and the outlet duct do not form a closed duct system, compressed air is continually lost over the collecting vessel so that a relatively large output power of the source of compressed air is required &'935 and large pressure fluctuations cannot be avoided.
A a RLF/1463R -1 C T t I
I..
S I ScO CC0
SC~
3 Further, there are known sealing systems (German Patent Application 3122407) in which a pressure-free leakage space is provided between the sealing rings and leaking liquid is discharged via a line running into the interior of the ship.
As a consequence of the pressure-free liquid space, the load on the sealing rings is relatively high and, owing to the poor lubrication of the sealing rings, considerable wear of the sealing rings and at the sleeve/shaft occurs within a short time. Failure of the sealing rings can result in extensive pollution of the environment.
Such systems may be considered ecologically sound only to a limited degree because in this case leaking lubricant is carried away from the leakage space as d trail by the rotating shaft and is possibly pumped into the surrounding sea water.
It is an object of this invention to overcome or substantially ameliorate the above disadvantages.
al There is disclosed herein a multiple seal assembly for a propeller °o shaft of a ship to impede migration of lubricant and/or sea water o o therepast, said assembly comprising: at least two sealing rings located about the propeller shaft, said at 20 least two sealing rings comprising at least one inwardly pointing sealing ring and at least one outwardly pointing sealing ring; i, at least one annular chamber located between respective adjacent sealing rings, wherein at least one of said at least one annular chambers is adapted to receive pressur.ised gas; *2S an inlet line and an outlet line extending from said at least one annular chamber adapted to receive pressurised gas, so as to form a closed line pressurised system therebetween; a pressure-regulating member inserted into said inlet line and adapted to mairi.ain the pressure in said annular chamber and said closed line pressurised system, said pressure being no higher than prevailing external water pressure or pressure of the lubricant; a shutoff member being selectively interactable with both said outlet line and a discharge channel so as to allow a discharge of liquid from said annular chamber into the interior of the ship; a stripper member located within and rigidly connected to said annular chamber so that lubricant adhering to the shaft is stripped therefrom and conducted into the lower part of said annular chamber.
so~
I
1! 4 In the preferred form of the present invention, even with upward or downward fluctuations of the external water pressure, the pressure in the annular chamber is always the same or slightly below the ambient external water pressure and the pressure in the lubricant space so that under the influence of pumping or the like, lubricant or sea water may leak into the annular chamber and be kept therein for a short time without discharge into the external water or the lubricant space and may be discharged afterwards by pressure reduction through lines running into the interior of the ship.
In this system, one can do without the normally required leakage space and can adjust the lubricant pressure so that the pressure of the lubricant is equal to the water pressure.
In accordance with a preferred embodiment a shutoff member is provided in the form of a magnetic valve. In this way, a simple remote control is obtained. Other preferred embodiments are characterised in that the control of the shutoff member is effected by a sensor or a floating member situated in the lower part of the annular chamber or in that the control is effected via a periodically acting time switch.
The former embodiment intends to evacuate he annular chamber in dependence upon the degree to which the annular chamber is filled with leaked liquid and is suitable particularly for operation involving large fluctuations, whereas the latter embodiment effects stepwise evacuation whici, is suitable under more or less non-varying conditions.
Finally, the amount by which the pressure of the gas is lower than the pressure of the media to be sealed off is 0.1 0.4 bar. This differential pressure range proved to be especially advantageous.
Other details will be described with reference to the appended drawing which only schematically shows the seal assembly and the lines S connected thereto.
The drawing shows the section of seal 1 with three sealing rings 2 forming two annular chambers 3 which provide a sealing effect in direction of the sea water W, on the one hand, and in direction of the lubricant, in the present case lubricating oil S, on the other. One of the annular S chambers is provided with an inlet channel 4 and a discharge channel S which channels are interconnected (dashed lines, line portion) and form a 36 closed system of pressurised lines.
RLF/1463R -2 5 Discharge channel 5 has a branch channel 5a which discharges into the interior of the ship (bilges) and which at the branch point is controlled by a three-way valve with a magnetic valve 6 actuated by a clock device so that the discharge channel is periodically opened at predetermined time intervals and the discharge of the liquid from the annular chamber is facilitated.
Discharge of the leaked medium can be effected by control with a floating member or a sensor. Inlet channel 4 comprises a simple regulating unit 8 controlling the pressure in the chamber system so that the pressure of the compressed air in the system of lines is always lower than the pressure of the two media to be sealed off by 0.1 0.4 bar.
In one of annular chambers 3 there is incorporated a stripper member 7 stripping in the lower part of the annular chamber than lubricating oil which adheres to sleeve B and which, despite the above-cited measures, leaks into the annular chamber due to the pumping effect of the sleeve.
C
t
II
II
/1463R

Claims (4)

  1. 2. The multiple seal assembly according to Claim 1, wherein said shutoff member is a magnetic valve.
  2. 3. The multiple seal assembly according to Claim 1 or Claim 2, wherein said shutoff member Is controlled by a sensor or a floating member mounted in the lower part of said annular chamber.
  3. 4. The multiple seal assembly according to Claim 1 or Claim 2, wherein said shutoff member is controlled by a periodically acting time switch. The multiple seal assembly according to any one of Claims 1 to 3, wherein the pressure of the compressed gas Is kept below the pressure of the medium to be sealed off by 0.1 0.4 bar. RLF/1463R C -7
  4. 6. A multiple seal assembly substantially as hereinbefore described with reference to the accompanying drawing. DATED this THIRD day of JANUARY 1991 Blohm Voss AG Patent Attorneys for the Applicant SPRUSON FERGUSON 0 0 a 0 0 940 9 0 0 0 o0 0t o 0 o 0 0 00 000 000 0 0 0 0 04 .0 RLF/ 14631R
AU26645/88A 1987-12-11 1988-12-07 An assembly for sealing the propeller shaft of a ship Expired AU608393B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3742079A DE3742079C2 (en) 1987-12-11 1987-12-11 Arrangement for sealing a propeller shaft of a ship
DE3742079 1987-12-11

Publications (2)

Publication Number Publication Date
AU2664588A AU2664588A (en) 1989-06-15
AU608393B2 true AU608393B2 (en) 1991-03-28

Family

ID=6342409

Family Applications (1)

Application Number Title Priority Date Filing Date
AU26645/88A Expired AU608393B2 (en) 1987-12-11 1988-12-07 An assembly for sealing the propeller shaft of a ship

Country Status (8)

Country Link
JP (1) JP2599983B2 (en)
KR (1) KR0142103B1 (en)
CN (1) CN1010796B (en)
AU (1) AU608393B2 (en)
DE (1) DE3742079C2 (en)
GB (1) GB2213539B (en)
NL (1) NL192828C (en)
SE (1) SE501926C2 (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
AU614013B2 (en) * 1988-01-13 1991-08-15 Blohm & Voss Industrie Gmbh An assembly for a shaft seal, particularly at a stern tube of a ship

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GB2252597B (en) * 1991-02-06 1994-08-10 Cocksedge Eng Ltd Improvements in roller assemblies
JP2509401B2 (en) * 1991-09-30 1996-06-19 株式会社神戸製鋼所 Stern tube shaft seal device and its control method
DE4333880C2 (en) * 1993-10-05 2003-03-06 Sms Demag Ag roller bearing
DE4434261B4 (en) * 1994-09-24 2004-07-08 B + V Industrietechnik Gmbh System to adapt to the changing draft of seagoing vessels
DE4434247B4 (en) * 1994-09-24 2004-07-15 B + V Industrietechnik Gmbh Safety device on sealing arrangements for propeller shafts of ships
GB9725912D0 (en) * 1997-12-09 1998-02-04 Cromar Sales And Service Limit The testing of the integrity of a fluid coupling
JP2002340199A (en) * 2001-05-11 2002-11-27 Eagle Ind Co Ltd Stern pipe shaft seal device
CN1316187C (en) * 2001-11-22 2007-05-16 米勒及布劳赫里有限公司 Segmented scraper ring
DE10241025B4 (en) * 2002-09-05 2004-08-12 EISENMANN Maschinenbau KG (Komplementär: Eisenmann-Stiftung) Transport trolley for a system for treating, in particular for painting, objects, in particular vehicle bodies
GB2448930B (en) * 2007-05-04 2009-08-19 Flybrid Systems Llp High speed flywheel seal
GB2449282B (en) 2007-05-17 2009-07-01 Flybrid Systems Llp High speed flywheel containment
CA2741355C (en) * 2008-10-22 2017-03-07 Single Buoy Moorings Inc. High pressure fluid swivel comprising a multi seal pressure regulation system
US8376366B2 (en) 2008-12-04 2013-02-19 Schlumberger Technology Corporation Sealing gland and methods of use
CN102086936B (en) * 2009-12-08 2013-06-19 张意立 Novel matching device with improved fluid sealing structure
KR101272451B1 (en) * 2009-12-18 2013-06-07 현대중공업 주식회사 Seal Pressure Control Equipment of Thruster and Pressure Control Method
DE102011018584A1 (en) 2011-04-11 2012-10-11 Blohm + Voss Industries Gmbh Seal for sealing waves
CN102322386B (en) * 2011-09-26 2013-03-13 浙江大学 Method for sealing ocean-current energy power generation device under the water
CN102556320B (en) * 2011-12-29 2014-05-28 苏州船用动力系统股份有限公司 Sealing structure of ship impeller underwater propeller shaft
WO2013156662A1 (en) * 2012-04-17 2013-10-24 Wärtsilä Finland Oy An arrangement for sealing a propeller shaft of a marine vessel and a method of controlling the operation thereof
DE102012009478B4 (en) * 2012-05-12 2017-07-20 Skf Blohm + Voss Industries Gmbh Sealing for rotating shafts of ship propellers
DE102012016447B4 (en) 2012-08-18 2022-12-01 Skf Marine Gmbh Sealing for rotating shafts of ship propeller shafts
DE102013008967B4 (en) 2013-05-22 2017-01-26 Skf Blohm + Voss Industries Gmbh Device for sealing a propeller shaft and method for producing such a device
CN103411122B (en) * 2013-07-30 2015-12-23 苏州豪建纺织有限公司 A kind of loom roll shaft oil-impermeable device
DE102014217223B4 (en) * 2014-08-28 2016-09-15 Skf Blohm + Voss Industries Gmbh Sealing system, procedure and watercraft
EP3015358B1 (en) * 2014-11-03 2019-01-02 ABB Oy Seal arrangement for a propeller shaft
CN105952620A (en) * 2016-05-13 2016-09-21 蚌埠市金鹏燃气设备制造有限公司 Oil scraping device for piston type compressor
DE102017213830A1 (en) * 2017-08-08 2019-02-14 Skf Marine Gmbh Sealing arrangement with connecting channel
CN108953118A (en) * 2018-07-13 2018-12-07 成都添益天然气压缩机制造有限公司 Body in natural gas compressor Multicarity
CN109469734A (en) * 2018-12-06 2019-03-15 中信重工机械股份有限公司 An underwater rotary seal matched with a submerged shaft boring machine
CN110894910A (en) * 2019-12-11 2020-03-20 天津长瑞大通流体控制系统有限公司 Leakage-free detection system and method for sealing device with alarm
CN110906003A (en) * 2019-12-11 2020-03-24 天津长瑞大通流体控制系统有限公司 Leak-free detection system and method for a sealing device with a collecting device
CN111306395B (en) * 2020-03-31 2024-10-25 天津长瑞大通流体控制系统有限公司 Online repairing system and repairing method for pipeline assembly after sealing failure
CN111981003A (en) * 2020-08-19 2020-11-24 徐燕 Novel anti-drop threaded connection rod
DE102022214027A1 (en) 2022-12-20 2024-06-20 Aktiebolaget Skf Rolling bearings with seals and leakage channel
DE102022214026A1 (en) 2022-12-20 2024-06-20 Aktiebolaget Skf Rolling bearings with seals and flushing channel
DE102023106604A1 (en) * 2023-03-16 2024-09-19 Christian Maier GmbH & Co. KG Dynamic seal, sealing arrangement, rotary union, blow molding machine and method for cooling a dynamic seal

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GB2174150A (en) * 1985-04-26 1986-10-29 Japan Crystal Ind Air pump

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EP0079480A1 (en) * 1981-11-05 1983-05-25 Howaldtswerke-Deutsche Werft Ag Sealing assembly with a radial slip-ring
GB2174150A (en) * 1985-04-26 1986-10-29 Japan Crystal Ind Air pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU614013B2 (en) * 1988-01-13 1991-08-15 Blohm & Voss Industrie Gmbh An assembly for a shaft seal, particularly at a stern tube of a ship

Also Published As

Publication number Publication date
AU2664588A (en) 1989-06-15
NL192828B (en) 1997-11-03
GB2213539B (en) 1991-12-11
DE3742079A1 (en) 1989-06-22
JP2599983B2 (en) 1997-04-16
KR890009722A (en) 1989-08-03
SE8804471L (en) 1989-06-12
CN1010796B (en) 1990-12-12
DE3742079C2 (en) 1994-05-11
KR0142103B1 (en) 1998-07-15
CN1035876A (en) 1989-09-27
NL192828C (en) 1998-03-04
SE8804471D0 (en) 1988-12-09
NL8803033A (en) 1989-07-03
JPH01195199A (en) 1989-08-07
GB8828437D0 (en) 1989-01-05
GB2213539A (en) 1989-08-16
SE501926C2 (en) 1995-06-19

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