CN1035141A - The cathodic protection device of the member on the stern tube of ship - Google Patents

The cathodic protection device of the member on the stern tube of ship Download PDF

Info

Publication number
CN1035141A
CN1035141A CN88109213A CN88109213A CN1035141A CN 1035141 A CN1035141 A CN 1035141A CN 88109213 A CN88109213 A CN 88109213A CN 88109213 A CN88109213 A CN 88109213A CN 1035141 A CN1035141 A CN 1035141A
Authority
CN
China
Prior art keywords
shell
axle sleeve
splitter
tightness system
ring
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Withdrawn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
CN88109213A
Other languages
Chinese (zh)
Other versions
CN1019206B (en
Inventor
冈特·梅维斯
厄恩斯特-彼得·冯堡根
冈特·皮什
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.)
Blohm and Voss 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 CN1035141A publication Critical patent/CN1035141A/en
Publication of CN1019206B publication Critical patent/CN1019206B/en
Expired legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
    • 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
    • B63H23/36—Shaft tubes
    • 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

Abstract

The cathodic protection device of the member on the stern tube of one ship; stern tube is equipped with a tightness system; tightness system is made up of with the one or more elastic rubber sealing rings that are connected with shell and cooperate with the axle sleeve of screwshaft a metal shell that is fixed on the tailing axle; in this tightness system; be fixed on the member that to protect by the piece shape consumable anode of sea-water corrosion; and axle sleeve constitutes negative electrode, and feature is that the shell of tightness system bridges between shell and the axle sleeve splitter in gap through one and conducts electricity with axle sleeve and be connected.

Description

The cathodic protection device of the member on the stern tube of ship
The present invention relates to the cathodic protection device on a kind of stern tube of ship, it has the feature that the preamble of claim 1 provides.
In the cathodic protection device, the parts that all will be protected conduct electricity connection mutually as shell, rudder for ship, ship axle and axle sleeve, so just can make these parts as negative electrode, and produce the action effect of electrochemical cell.
In this above-mentioned class device (DE-OS2520948), this requirement is not always can satisfy really, because the shell of tightness system and stern tube are through an angle staple mechanical connection rather than be electrically connected, because stern tube is not included in the above-mentioned cathod system.
Therefore, owing to do not flow into the not enough of sealed shell surface or inflow from the effusive protective current of consumable anode, sealed shell is actually the corrosion that suffers seawater with having no to protect.This disadvantage must be tested and eliminate it, so sealed shell bronze or similarly corrosion resistant material manufacturing at present.Obviously, these material price costlinesses, the present invention is just based on this task, can enough more cheap material, as steel or grey cast iron, make sealed shell, and and needn't therefore suffer stronger corrosion.According to the present invention, this task is finished by the shell of tightness system and axle sleeve are connected through a splitter conduction that bridges at the gap between shell and the axle sleeve.
By this measure, sealed shell now also is included in cathod system and has suffered, and is subjected to the anticorrosive effect of consumable anode.According to form of implementation of the present invention, splitter can adopt floating ring, self-cleaning contact.The form of the artificial sealing-ring of conduction or the oil-water emulsion of the conduction in ring cavity.
In addition, as usually, consumable anode can consider to be installed on the flange, on the axle sleeve or on the sealed shell.Consumable anode is installed in the characteristic that this scheme on the sealed shell has made full use of cathode assembly; promptly flow near the anode cathode assembly at first, so on this capsule, produced better corrosion protection result from the effusive protective current of anode.
Some some other forms of implementation have been adopted for this purpose; consumable anode is to constitute like this; promptly the size of streaming current should satisfy the safety precaution requirement between consumable anode and the shell that will protect, prolongs the life-span of consumable anode again as much as possible.Therefore, can consider to reduce the active surface of consumable anode or between consumable anode and reinforcing table, insert a ZT.Conductive gasket.
At last, can consider with galvanic current to be that foreign current drives device of the present invention, can use zinc, aluminium or its alloy (as with the alloy of charcoal or platinum) as suitable anode material.
By accompanying drawing the present invention is described in more detail below.
Fig. 1 be one its splitter and a longitudinal section that is placed in the tightness system of the consumable anode on the sealed shell are arranged.
Fig. 2 is one and has a splitter and a longitudinal section that is placed in the tightness system of the consumable anode on the axle sleeve.
In stern tube sealing illustrated in figures 1 and 2, an axle sleeve 2,2.1 is on the axle 1, axle 1 is bearing on the bearing shell that does not illustrate, and this bearing shell is by 3 supportings of a stern bossing, and sealed shell 4 also is fixed on this tailing axle propeller boss.Sealed shell 4 always is clipped in two seal washers 5.1,5.2,5.3 between the collar by 4 4.1,4.2,4.3,4.4 and 3 of axial collars concordant, arranged adjacent and forms.Seal washer is the lip structure, and wherein two towards seawater W, and one towards lubricant cavity S.Between two sealing lips, always leave a ring cavity 6.1,6.2.In the embodiment shown in fig. 1, on the sealed shell 4 and be on the outside surface of seawater W, to have fixed a blocky consumable anode 7 at it.In the collar 4.4 adjacent, have annular groove 9 with lubricant cavity S; a floating ring 8 leads in annular groove 9, and floating ring 8 overlaps with small gap and axle sleeve 2 and meshes with a rotation protection device 10 that is fixed in the annular groove outside.This rotation protection device also plays contact member, so that arrive floating ring 8 smoothly from the electric current of the collar 4.4.
In the embodiment shown in Figure 2, a piece shape consumable anode 7 is fixed on the angle staple 2.1 of axle sleeve 2, and is to be fixed on the flange side of sealed shell 4.In this embodiment, in the collar 4.4 adjacent, have a blind hole 12 with lubricant cavity S, here, here, splitter is made a ring section 11, and it is placed in the blind hole 12 and has radius clearance, and it is pressed on the outside surface of axle sleeve 2 by a spring 13, at this, spring 13 also has the effect of contact member concurrently.

Claims (9)

1. the cathodic protection device of the member on the stern tube of ship; stern tube is equipped with a tightness system; tightness system is made up of with the one or more elastic rubber sealing rings that are connected with shell and cooperate with the axle sleeve of propeller shaft a metal shell that is fixed on the stern tube; in this tightness system; be fixed on the member that to protect by the piece shape consumable anode of sea-water corrosion; and axle sleeve constitutes negative electrode; it is characterized in that the shell of tightness system is connected with the axle sleeve conduction through a splitter that bridges at gap between shell and the axle sleeve.
2. according to the device of claim 1; it is characterized in that; splitter is floating ring (8); it is with small spacer ring seize cover (2); and have the gap and rotate guiding in the annular groove (9) of protection ground in shell (4); at this, rotation protection device (10) also has the effect of contact member concurrently.
3. according to the device of claim 1, it is characterized in that, splitter places the ring section (11) of the conduction on the axle sleeve (2) to constitute by one, it has radius clearance ground guiding in the blind hole (12) of shell (4), and be pressed on the axle sleeve (2) with its grinding skin by means of a spring (13), here, spring (13) has the effect of contact member concurrently.
4. according to the device of claim 1, it is characterized in that splitter constitutes by the sealing-ring (5.1,5,2,5.3) of a conduction at least,
5. according to the device of claim 1, it is characterized in that splitter constitutes by the ring cavity of settling between the sealing-ring (6.1,6.2) that is full of conducting medium (for example oil-water emulsion of selected ratio) at least.
6. according to the device one of in the claim 1 to 5, it is characterized in that consumable anode (7) is outer on shell (4), and be to be in shell (4) on the outside surface of seawater.
7. according to the device one of in the claim 1 to 5, it is characterized in that consumable anode (7) is on the angle staple (2.1) of axle sleeve (2).
8. according to the device one of in the claim 1 to 7, it is characterized in that axle sleeve (2,2.1) and axle (1) and propeller are insulating.
9. according to the device one of in the claim 1 to 8, it is characterized in that consumable anode by zinc, aluminium or its have enough protection potential energy alloy (as with the alloy of charcoal or platinum) constitute, here, device is foreign current work with galvanic current.
CN88109213A 1987-12-01 1988-12-01 Cathodic corrosion-preventing device for sternshaft tube of ship Expired CN1019206B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3740679A DE3740679C2 (en) 1987-12-01 1987-12-01 Device for cathodic corrosion protection of a component on a stern tube of a ship
DEP3740679.5 1987-12-01

Publications (2)

Publication Number Publication Date
CN1035141A true CN1035141A (en) 1989-08-30
CN1019206B CN1019206B (en) 1992-11-25

Family

ID=6341644

Family Applications (1)

Application Number Title Priority Date Filing Date
CN88109213A Expired CN1019206B (en) 1987-12-01 1988-12-01 Cathodic corrosion-preventing device for sternshaft tube of ship

Country Status (8)

Country Link
JP (1) JP2583792B2 (en)
KR (1) KR960011021B1 (en)
CN (1) CN1019206B (en)
AU (1) AU613122B2 (en)
DE (1) DE3740679C2 (en)
GB (1) GB2213165B (en)
NL (1) NL193321C (en)
SE (1) SE8804356L (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1037457C (en) * 1989-09-14 1998-02-18 布隆福斯工业有限公司 Device for corrosion protection of shaft-tube seal
CN104775887A (en) * 2015-04-09 2015-07-15 上海天纳克排气系统有限公司 Exhausting system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014223064B4 (en) * 2014-11-12 2019-07-18 Aktiebolaget Skf Protective device for the stern tube seal of propeller-propelled ships
CN106086900B (en) * 2016-07-19 2018-06-19 武汉理工大学 Ship impressed current cathodic protection system and its intelligent control method
WO2019131899A1 (en) * 2017-12-27 2019-07-04 Nok株式会社 Sealing device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1152620A (en) * 1956-02-28 1958-02-21 Condensation Application Mec Device for the protection against corrosion of submerged or buried metal surfaces
US3169504A (en) * 1963-12-16 1965-02-16 Wankesha Bearings Corp Cathodic system
NO129803B (en) * 1973-03-21 1974-05-27 Skarpenord As
JPS5116248A (en) * 1974-07-31 1976-02-09 Kobe Steel Ltd SENBIKANSHIIRUYORAINAANO DENKIBOSHOKUHO
JPS5819707B2 (en) * 1975-10-02 1983-04-19 電気化学工業株式会社 Niekigata Setuchiyakuzaisoseibutsu
JPS628238Y2 (en) * 1981-02-20 1987-02-25

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1037457C (en) * 1989-09-14 1998-02-18 布隆福斯工业有限公司 Device for corrosion protection of shaft-tube seal
CN104775887A (en) * 2015-04-09 2015-07-15 上海天纳克排气系统有限公司 Exhausting system

Also Published As

Publication number Publication date
AU613122B2 (en) 1991-07-25
AU2646888A (en) 1989-06-01
CN1019206B (en) 1992-11-25
DE3740679C2 (en) 1993-10-14
NL193321B (en) 1999-02-01
JP2583792B2 (en) 1997-02-19
GB2213165B (en) 1991-08-14
KR960011021B1 (en) 1996-08-16
GB8827843D0 (en) 1988-12-29
SE8804356D0 (en) 1988-12-01
JPH01195198A (en) 1989-08-07
SE8804356L (en) 1989-06-02
KR890010282A (en) 1989-08-07
GB2213165A (en) 1989-08-09
DE3740679A1 (en) 1989-06-15
NL8802940A (en) 1989-07-03
NL193321C (en) 1999-06-02

Similar Documents

Publication Publication Date Title
CN102066787A (en) Bearing module
US4486181A (en) Marine propulsion device including thrust bushing anode
CN1035141A (en) The cathodic protection device of the member on the stern tube of ship
US3133873A (en) Electrolytic anode and connection
US4146448A (en) Protection of a stern tube shaft liner
JPH08128536A (en) Butterfly valve
JP2834762B2 (en) Anti-corrosion equipment for ship propulsion
CN114929939B (en) Propeller device in cathode protection system
JP4916067B2 (en) Rotating spindle anticorrosion device for underwater rotating machine
JP4562271B2 (en) Electric corrosion prevention device for underwater rotating machine
JP2006291724A (en) Pump and method for preventing corrosion thereof
JPH0318506Y2 (en)
JPS6224799Y2 (en)
CN216070471U (en) Sacrificial anode anticorrosion outboard engine
JP4785220B2 (en) Bearing device used to support vertical rotating shaft in underwater rotating machine
JPH0734797Y2 (en) Z type propulsion system propeller corrosion protection device
CN218465949U (en) Sacrificial anode cathode protection device
JPH0348208Y2 (en)
JP4785219B2 (en) Bearing device used to support vertical rotating shaft in underwater rotating machine
JPH0638384Y2 (en) Shaft grounding device
JPH05213275A (en) Shaft sealing device
RU2066659C1 (en) Controllable-pitch propeller
JP2001140911A (en) Bearing device
CN112522711A (en) Cathode protection mechanism for potential amplitude limiting
JPS5830895A (en) Method of preventing electrical corrosion on propeller shaft sleeve in large vessel

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
C13 Decision
GR02 Examined patent application
C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee