CN110329482A - External is dived device shafting device - Google Patents

External is dived device shafting device Download PDF

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Publication number
CN110329482A
CN110329482A CN201910358764.0A CN201910358764A CN110329482A CN 110329482 A CN110329482 A CN 110329482A CN 201910358764 A CN201910358764 A CN 201910358764A CN 110329482 A CN110329482 A CN 110329482A
Authority
CN
China
Prior art keywords
stern pipe
stern
propeller shaft
propeller
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.)
Granted
Application number
CN201910358764.0A
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Chinese (zh)
Other versions
CN110329482B (en
Inventor
张立浩
王磊
周睿
罗瑞
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.)
China Ship Development and Design Centre
Original Assignee
China Ship Development and Design Centre
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 China Ship Development and Design Centre filed Critical China Ship Development and Design Centre
Priority to CN201910358764.0A priority Critical patent/CN110329482B/en
Publication of CN110329482A publication Critical patent/CN110329482A/en
Application granted granted Critical
Publication of CN110329482B publication Critical patent/CN110329482B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H21/00Use of propulsion power plant or units on vessels
    • B63H21/32Arrangements of propulsion power-unit exhaust uptakes; Funnels peculiar to vessels
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H21/00Use of propulsion power plant or units on vessels
    • B63H21/38Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H23/00Transmitting power from propulsion power plant to propulsive elements
    • B63H23/32Other parts
    • B63H23/36Shaft tubes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/02Sealings between relatively-stationary surfaces
    • F16J15/06Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • F16J15/162Special parts or details relating to lubrication or cooling of the sealing itself
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H21/00Use of propulsion power plant or units on vessels
    • B63H21/38Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
    • B63H21/386Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like for handling lubrication liquids

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Sealing Devices (AREA)
  • Sealing Of Bearings (AREA)
  • Sealing With Elastic Sealing Lips (AREA)

Abstract

The present invention relates to a kind of latent device shafting devices of external, including stern pipe, propeller shaft and propeller, propeller shaft passes through stern pipe, propeller is installed on the tail bone section of propeller shaft, latent device shafting device is mounted as a whole on latent device out of my cabin, wherein, stern pipe fore body is mounted on the breech face of pressure hull, stern pipe stern is mounted on non-pressure hull, propeller shaft front end exports axis connection by the propulsion electric machine in flexible coupling and cabin, flexible coupling is set to out of my cabin, and propeller shaft rear end is pierced by from non-pressure hull tail portion, and propeller is located at outside non-pressure hull.Latent device shafting is wholy set in out of my cabin by the present invention, the occupancy in space as far as possible in reduction cabin, and have it is modular be installed on disassembly mode, it is convenient for disassembly and assembly, be conducive to each component maintenance maintenance of shafting;It is small suitable for tonnage, characteristics of compact layout, the limited latent device in space in cabin.

Description

External is dived device shafting device
Technical field
The present invention relates to Ship Power Equipment technical fields, and in particular to a kind of latent device shafting device of external.
Background technique
Latent device tail portion is equipped with the isometric system, device of shaft part, propeller, bearing, realizes side of a ship external seal, ensures that shafting is normally transported Turn and bear the thrust of shafting generation, to complete the movement of latent device.The latent device propulsion system of tradition generally uses uniaxial single-blade, electricity Push into mode, propulsion electric machine arranges in cabin, and shafting is made of in cabin the equipment of many types of functional independence, configuration compared with For complexity, occupied space resource is more, and latent device tail portion welds together with other parts, it has not been convenient to installing and dismounting and maintenance It ensures.
Summary of the invention
The technical problem to be solved in the present invention is that being mounted on cabin for above-mentioned latent device shafting equipment of the existing technology Interior, more than configuration complexity, occupied space resource deficiency, provides a kind of latent device shafting device of external, and the present invention is integrated with outboard The functions such as sealing, thrust transmitting, lubricating oil cooling, are arranged in outside latent device pressure hull, reduce the occupancy in space in cabin as far as possible, And has flexible installation and maintenance protection.
The present invention is technical solution used by solving technical problem set forth above are as follows:
A kind of latent device shafting device of external, including stern pipe, propeller shaft and propeller, the propeller shaft pass through described Stern pipe, the propeller are installed on the tail bone section of the propeller shaft, and the latent device shafting device is mounted as a whole on the cabin of latent device Outside, wherein the stern pipe fore body is mounted on the breech face of pressure hull, and stern pipe stern is mounted on non-pressure hull, the spiral shell It revolving paddle shaft front end and axis connection is exported by the propulsion electric machine in flexible coupling and cabin, the flexible coupling is set to out of my cabin, Propeller shaft rear end is pierced by from the non-pressure hull tail portion, and the propeller is located at outside non-pressure hull.
In above scheme, the latent device shafting device further includes front seal, rear seal and pressure compensator;Before described Sealing element and rear seal are fixedly installed in front-end and back-end inside the stern pipe respectively, are set on propeller shaft, with stern Pipe fore body forms static seal, forms dynamic sealing with propeller shaft, and front seal, rear seal and stern pipe and propeller shaft form close Chamber is sealed, fills lubricant medium in the seal chamber;The pressure compensator is installed on the outside of stern pipe, and with stern pipe inner seal chamber Connection, pressure compensator are elastic rubber formula oil sac, and inside is full of lubricating oil, when external dynamic sea pressure change, pressure compensation The oil sac of device is deformed, and adjusts lubricating oil pressure in stern tube, and keep balancing with external dynamic sea pressure.
In above scheme, the latent device shafting device further includes the fore bearing and rear axle being set on the propeller shaft It holds, the fore bearing is close to the rear side setting of front seal, and the ahead thrust that propeller generates is transmitted to stern by front seal Pipe and hull;The rear bearing is close to the front side setting of rear seal, and the astern thrust that propeller generates is passed by rear seal It is delivered to stern pipe and hull.
In above scheme, it is equipped with oil-filled hole at the top of stern pipe middle position, is blocked by plug screw;Stern pipe middle position bottom Portion is equipped with drain oil, is blocked by plug screw.
In above scheme, the stern pipe fore body is mounted on pressure hull by fastening bolt, the stern pipe fore body with it is resistance to There are mutually matched concave and convex platforms for pressure shell body, and the sealing of contact surface is realized by sealing ring;Stern pipe stern passes through fastening spiral shell Bolt is fixedly mounted on non-pressure hull.
In above scheme, the stern pipe fore body is equipped with hand hole, provides installation and maintenance space for flexible coupling.
The beneficial effects of the present invention are:
1, latent device shafting is wholy set in out of my cabin by the present invention, the occupancy in space as far as possible in reduction cabin, and has module That changes is installed on disassembly mode, convenient for disassembly and assembly, is conducive to each component maintenance maintenance of shafting;It is small suitable for tonnage, characteristics of compact layout, cabin The interior limited latent device in space.
2, it is internally integrated arrangement front seal, rear seal in stern pipe, forms static seal and propeller shaft with stern pipe fore body Dynamic sealing is formed, pressure compensator is installed outside stern pipe, is connected to stern pipe inner seal chamber, is situated between for the intracavitary lubrication of balanced seal Matter and external water pressure, the reduction seal chamber inside and outside differential pressure when latent device dives deep change, raising rear seal and front seal Stability, safety.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is the structural schematic diagram of the latent device shafting device of external of the present invention.
In figure: 10, stern pipe;11, oil-filled hole;12, drain oil;13, hand hole;20, front seal;30, rear seal;40, Pressure compensator;50, fore bearing;60, rear bearing;70, propeller shaft;80, propeller;90, flexible coupling;210, pneumatic shell Body;220, non-pressure hull;230, motor output shaft.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control attached drawing is described in detail A specific embodiment of the invention.
As shown in Figure 1, for the latent device shafting device of external of the invention, including stern pipe 10, propeller shaft 70 and propeller 80, propeller shaft 70 passes through stern pipe 10, and propeller 80 is installed on the tail bone section of propeller shaft 70.Latent device shafting device integral installation Out of my cabin in latent device, wherein 10 fore body of stern pipe is mounted on the breech face of pressure hull 210, and 10 stern of stern pipe is mounted on non-pressure resistance On shell 220,70 front end of propeller shaft is connect by flexible coupling 90 with the propulsion electric machine output shaft 230 in cabin, flexibility connection Axis device 90 is set to out of my cabin, and 70 rear end of propeller shaft is pierced by from non-220 tail portion of pressure hull, and propeller 80 is located at non-pressure hull Outside 220.Latent device shafting device is mounted as a whole on latent device out of my cabin by the present invention, can be likely to reduced the occupancy in space in cabin.
It advanced optimizes, in the present embodiment, latent device shafting device further includes that front seal 20, rear seal 30 and pressure are mended Repay device 40;Front seal 20 and rear seal 30 are fixedly installed in front-end and back-end inside stern pipe 10 respectively, are set in spiral In paddle shaft 70, two sealing elements and 10 fore body of stern pipe form static seal, form dynamic sealing with propeller shaft 70, front seal 20, Rear seal 30 and stern pipe 10 and propeller shaft 70 form seal chamber, fill lubricant medium in seal chamber;Pressure compensator 40 is pacified It loaded on 10 outside of stern pipe, and is connected to 10 inner seal chamber of stern pipe, is used for the intracavitary lubricant medium of balanced seal and external water pressure, Latent device, which is dived, reduces seal chamber inside and outside differential pressure when changing deeply, improve stability, the safety of rear seal 30 and front seal 20 Property.Specifically, pressure compensator 40 is elastic rubber formula oil sac, inside is full of lubricating oil, when external dynamic sea pressure change, pressure The oil sac of force compensating device 40 is deformed, and adjusts lubricating oil pressure in stern tube, and keep balancing with external dynamic sea pressure.
It advanced optimizes, in the present embodiment, device shafting device of diving further includes fore bearing 50 and rear bearing 60,50 He of fore bearing 60 interference mode of rear bearing is mounted on propeller shaft 70, and fore bearing 50 is close to the rear side setting of front seal 20, rear bearing 60 It is close to the front side setting of rear seal 30.The thrust that propeller 80 generates passes to fore bearing 50 or rear axle by propeller shaft 70 60 are held, then passes to front seal 20 or rear seal 30, stern pipe 10 is then passed to, is eventually transferred into hull.In seal chamber Lubricant medium for lubricating fore bearing 50 and rear bearing 60.
It advanced optimizes, in the present embodiment, oil-filled hole 11 is equipped at the top of 10 middle position of stern pipe, is blocked by plug screw;Stern 10 middle position bottom of pipe is equipped with drain oil 12, is blocked by plug screw.
It advanced optimizes, in the present embodiment, 10 fore body of stern pipe is mounted on pressure hull 210 by fastening bolt, stern pipe 10 fore bodies are used to limit with pressure hull 210 there are mutually matched concave and convex platform, and pass through sealing ring and realize the close of contact surface Envelope;10 stern of stern pipe is fixedly mounted on non-pressure hull 220 by fastening bolt.
It advanced optimizes, in the present embodiment, 10 fore body of stern pipe is equipped with hand hole 13, provides installation for flexible coupling 90 Service clearance.
Shaft function of the present invention carries out Combined design, and forward and backward bearing 60 is arranged at 10 bow stern end of stern pipe, be used to support and It transmits propeller 80 and generates thrust;Forward and backward sealing is respectively set at forward and backward 60 both ends of bearing, inside and outside stern pipe 10 Sealing;It is full of lubricating oil in stern pipe 10, oil pressure adjusting is carried out by the pressure compensator 40 on stern pipe 10.To realize that shafting is integrated Change, modularization and miniaturization, realization shafting external arrangement facilitate installation and maintenance guarantee.
Propeller 80 is removed from propeller shaft 70 first in disassembly, then removes non-pressure hull by the present invention 220, it is then first come loose 90 fastening bolt of flexible coupling by the hand hole 13 of 10 fore body of stern pipe, then external is dived device shafting Device is integrally removed from pressure hull 210, and flexible coupling 90 is then dismantled, and then dismantles front seal 20 and rear seal 30, finally dismantle fore bearing 50 and rear bearing 60.Installation process is in contrast.The device shafting dress it can be seen that external of the present invention is dived The advantages of setting with convenient for disassembly and assembly, being conducive to each component maintenance maintenance of shafting.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much Form, all of these belong to the protection of the present invention.

Claims (6)

  1. The device shafting device 1. a kind of external is dived, including stern pipe, propeller shaft and propeller, the propeller shaft pass through the stern Pipe, the propeller are installed on the tail bone section of the propeller shaft, which is characterized in that the latent device shafting device is mounted as a whole on Latent device is out of my cabin, wherein the stern pipe fore body is mounted on the breech face of pressure hull, and stern pipe stern is mounted on non-pressure hull On, the propeller shaft front end exports axis connection by the propulsion electric machine in flexible coupling and cabin, and the flexible coupling is set It is placed in out of my cabin, propeller shaft rear end is pierced by from the non-pressure hull tail portion, and the propeller is located at outside non-pressure hull.
  2. The device shafting device 2. external according to claim 1 is dived, which is characterized in that the latent device shafting device further includes Front seal, rear seal and pressure compensator;The front seal and rear seal are fixedly installed in respectively in the stern pipe The front-end and back-end in portion are set on propeller shaft, are formed static seal with stern pipe fore body, are formed dynamic sealing with propeller shaft, preceding Sealing element, rear seal and stern pipe and propeller shaft form seal chamber, fill lubricant medium in the seal chamber;The pressure is mended It repays device to be installed on the outside of stern pipe, and is connected to stern pipe inner seal chamber, pressure compensator is elastic rubber formula oil sac, and inside is full of Lubricating oil, when external dynamic sea pressure change, the oil sac of pressure compensator is deformed, and adjusts lubricating oil pressure in stern tube, and It keeps balancing with external dynamic sea pressure.
  3. The device shafting device 3. external according to claim 2 is dived, which is characterized in that the latent device shafting device further includes The fore bearing and rear bearing being set on the propeller shaft, the fore bearing are close to the rear side setting of front seal, propeller The ahead thrust of generation is transmitted to stern pipe and hull by front seal;The rear bearing is close to the front side setting of rear seal, The astern thrust that propeller generates is transmitted to stern pipe and hull by rear seal.
  4. The device shafting device 4. external according to claim 2 is dived, which is characterized in that set at the top of stern pipe middle position There is oil-filled hole, is blocked by plug screw;Stern pipe middle position bottom is equipped with drain oil, is blocked by plug screw.
  5. The device shafting device 5. external according to claim 1 is dived, which is characterized in that the stern pipe fore body passes through fastening spiral shell Bolt is mounted on pressure hull, and there are mutually matched concave and convex platforms with pressure hull for the stern pipe fore body, and pass through sealing ring Realize the sealing of contact surface;Stern pipe stern is fixedly mounted on non-pressure hull by fastening bolt.
  6. The device shafting device 6. external according to claim 1 is dived, which is characterized in that the stern pipe fore body is equipped with hand Hole provides installation and maintenance space for flexible coupling.
CN201910358764.0A 2019-04-30 2019-04-30 External submersible vehicle shafting device Active CN110329482B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910358764.0A CN110329482B (en) 2019-04-30 2019-04-30 External submersible vehicle shafting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910358764.0A CN110329482B (en) 2019-04-30 2019-04-30 External submersible vehicle shafting device

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CN110329482A true CN110329482A (en) 2019-10-15
CN110329482B CN110329482B (en) 2022-03-18

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110806302B (en) * 2019-11-21 2021-01-08 中国空气动力研究与发展中心低速空气动力研究所 Pressure compensation device capable of decoupling six-component acting force
WO2023012055A1 (en) * 2021-08-02 2023-02-09 Thyssenkrupp Marine Systems Gmbh Submarine with a thrust bearing for coupling the propulsion forces from the drive shaft into the pressure hull

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1285301A (en) * 2000-09-29 2001-02-28 成都明达船用密封有限公司 Oil lubricating seal device for ship tail shaft
CN2910795Y (en) * 2005-11-15 2007-06-13 张大雄 Semi-submersed blade type propeller
CN201461960U (en) * 2009-07-02 2010-05-12 杭州海聚动力科技有限公司 Pressure compensation device for rotary seal of high pressure water
EP2343235A2 (en) * 2010-01-07 2011-07-13 Howaldtswerke-Deutsche Werft GmbH Submarine
CN202883740U (en) * 2012-09-28 2013-04-17 长乐力恒锦纶科技有限公司 Bearing of rotary valve capable of being lubricated periodically
CN204056279U (en) * 2014-06-16 2014-12-31 桂平市大众船舶修造厂 Screw shaft of ship device
CN204624576U (en) * 2015-01-19 2015-09-09 中冶长天国际工程有限责任公司 A kind of round roller axle end sealing device and there is the Analytic Tower device of sealing device
CN109624736A (en) * 2019-01-30 2019-04-16 浙江大学 Four coil coupled structure wireless chargings have axial vector to promote submarine model and its method
CN109681439A (en) * 2019-01-31 2019-04-26 长沙矿冶研究院有限责任公司 A kind of deep water water pump with pressure compensation

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1285301A (en) * 2000-09-29 2001-02-28 成都明达船用密封有限公司 Oil lubricating seal device for ship tail shaft
CN2910795Y (en) * 2005-11-15 2007-06-13 张大雄 Semi-submersed blade type propeller
CN201461960U (en) * 2009-07-02 2010-05-12 杭州海聚动力科技有限公司 Pressure compensation device for rotary seal of high pressure water
EP2343235A2 (en) * 2010-01-07 2011-07-13 Howaldtswerke-Deutsche Werft GmbH Submarine
CN202883740U (en) * 2012-09-28 2013-04-17 长乐力恒锦纶科技有限公司 Bearing of rotary valve capable of being lubricated periodically
CN204056279U (en) * 2014-06-16 2014-12-31 桂平市大众船舶修造厂 Screw shaft of ship device
CN204624576U (en) * 2015-01-19 2015-09-09 中冶长天国际工程有限责任公司 A kind of round roller axle end sealing device and there is the Analytic Tower device of sealing device
CN109624736A (en) * 2019-01-30 2019-04-16 浙江大学 Four coil coupled structure wireless chargings have axial vector to promote submarine model and its method
CN109681439A (en) * 2019-01-31 2019-04-26 长沙矿冶研究院有限责任公司 A kind of deep water water pump with pressure compensation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
徐筱欣 主编;: "《船舶动力装置》", 30 April 2007, 上海交通大学出版社;2007年4月第1版第1次印刷 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110806302B (en) * 2019-11-21 2021-01-08 中国空气动力研究与发展中心低速空气动力研究所 Pressure compensation device capable of decoupling six-component acting force
WO2023012055A1 (en) * 2021-08-02 2023-02-09 Thyssenkrupp Marine Systems Gmbh Submarine with a thrust bearing for coupling the propulsion forces from the drive shaft into the pressure hull

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