CN110202326A - A kind of stern seal of tube oil pipe mounting structure and installation method - Google Patents
A kind of stern seal of tube oil pipe mounting structure and installation method Download PDFInfo
- Publication number
- CN110202326A CN110202326A CN201910583766.XA CN201910583766A CN110202326A CN 110202326 A CN110202326 A CN 110202326A CN 201910583766 A CN201910583766 A CN 201910583766A CN 110202326 A CN110202326 A CN 110202326A
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- Prior art keywords
- stern
- pipe
- oil pipe
- hole
- thread rack
- 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.)
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Links
- 238000009434 installation Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000003466 welding Methods 0.000 claims description 28
- 239000012535 impurity Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000010079 rubber tapping Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 57
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- 229910052786 argon Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B71/00—Designing vessels; Predicting their performance
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Sealing Devices (AREA)
Abstract
The present invention relates to a kind of stern seal of tube oil pipe mounting structure and installation methods, it includes several through-holes and several thread racks corresponding with through-hole being placed equidistant in stern pipe surface, described thread rack one end is equipped with the fixed part for fixing the perforation of oil pipe, the other end of the thread rack is then set as may pass through the mounting portion of through-hole, the locking nut being threadedly engaged with it is equipped with outside the fixed part, it is improved by mounting structure to stern seal of tube oil pipe and installation method, solve the problems, such as that aperture path length stern pipe staff can not carry out stern sealing oil pipe and be fixedly mounted.After the stern sealing oil pipe mounting structure installs work, the components for loosening and falling can be generated without any, do not have to worry to have part can loosen and fall to the generation damage of screw shaft of ship device in later period use process.
Description
Technical field
The present invention relates to ship manufacture fields, and in particular to a kind of stern seal of tube oil pipe mounting structure and installation method.
Background technique
Ship stern pipe normal length has even more than ten meters of several rice, and ship stern seals oil pipe and stern bearing temperature sensor
Protection pipe need to usually extend to stern sealing and stern bearing by stern tube, and in stern pipe, oil pipe and protecting tube for temperature sensor are needed
It is firmly fixed in stern pipe to prevent being damaged when shafting high-speed rotation.The installation of traditional structure stern shaft seal oil pipe, worker
It need to enter inside stern pipe and welding installation is carried out to oil pipe and bracket, because of the usual narrow space of stern pipe, worker's construction space is limited,
It is difficult to ensure that construction quality；For aperture path length stern pipe, people cannot be introduced into stern pipe the support bracket fastened installation for carrying out oil pipe
Work, it is common practice that fixed conventional oil pipe fixes bracket in the place that stern pipe both ends people can get at, what centre can't reach
It is local then it can not be fixed, the oil pipe not fixed, the stern pipe lubricating oil pair driven in shafting high speed rotational operation
It can generate impact, and oil pipe is made to generate the vibration of the high degree of convergence of high frequency, after oil pipe vibration for a long time reaches certain fatigue limit, oil
It manages and is easy to crack damage, in addition conventional bracket, if fixing bolt loosening is fallen, damage will be generated to stern pipe stern tube shaft, and be
It ensures the safe and reliable operation of stern tube shaft, eliminates the hidden danger of any normal/cruise for influencing whether ship, safe, reliable and convenient stern
The mounting structure and installation method urgent need to resolve of seal of tube oil pipe.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of stern seal of tube oil pipe mounting structure with
And installation method.
To achieve the above object, the present invention provides the following technical scheme that a kind of stern seal of tube oil pipe mounting structure, packet
Include several through-holes and several thread racks corresponding with through-hole being placed equidistant in stern pipe surface, described thread rack one end
Equipped with the fixed part having for fixing the perforation of oil pipe, the other end of the thread rack is then set as may pass through the peace of through-hole
Dress portion, the fixed part outside are equipped with the locking nut being threadedly engaged with it.
The diameter of the perforation is greater than the diameter of oil pipe.
The through-hole diameter is less than locking nut, greater than the diameter of the mounting portion of thread rack.
A kind of installation method based on above-mentioned stern seal of tube oil pipe mounting structure comprising following steps:
Step 1: being placed equidistant with several through-holes on stern pipe；
Step 2: the thread rack of corresponding number, and adjacent thread rack are fixedly installed on oil pipe according to the quantity of through-hole
The distance between the distance between through-hole adjacent on stern pipe it is consistent, and pass through locking screw after fixing thread rack
Mother is locked；
Step 3: by being moved in stern pipe by the oil pipe of step 2 processing, and by the through-hole pair in thread rack and stern pipe
It answers, and the mounting portion of thread rack is arranged across through-hole；
Step 4: tensing thread rack by mounting portion, and locking nut is made to be close to the inner wall of stern pipe, and carry out a little to it
Weldering, is fixed on stern pipe；
Step 5: the exposed mounting portion outside stern pipe is cut off, and polishes after welding is completed.
In step 1, the through-hole being arranged on stern pipe needs mechanical tapping.
In step 2, flash removed and impurity need to be removed by cleaning treatment early period by installing fixed stern seal of tube oil pipe.
In step 3, first stern pipe is placed on Working rack, stern tube body and ground is made to have welding operating space, adjusts stern
Tube body is moved to stern tube body surface through-hole downward, then by the oil pipe after at step 2 in stern pipe, makes to have locked
Thread rack is corresponding with corresponding through-hole, outside the mounting portion emersion stern tube body of thread rack.
Beneficial effects of the present invention: the invention is changed by mounting structure to stern seal of tube oil pipe and installation method
Into improving the working environment of worker, moved on to outside stern pipe by welding installment work in original stern pipe and be subjected to；Solution
The aperture path length stern pipe staff that determined can not carry out stern sealing oil pipe and problem is fixedly mounted；The stern seals oil pipe mounting structure
Structure is simple, saves material and cost；After stern sealing oil pipe mounting structure installs work, without it is any can generate loosening and
The components fallen, do not have in later period use process to worry to have part can loosen and fall and generate damage to screw shaft of ship device；
The installation of stern seal of tube oil pipe is fixed reliable, the stern pipe lubricating oil driven when avoiding shafting high speed rotational operation to can not fix or
The bad stern seal of tube oil pipe impact of fixed effect causes the vibration of the high degree of convergence of high frequency, reaches the vibration of stern Seal Oil pipe range time
Crack damage is generated after certain fatigue limit, to influence the normal/cruise of ship.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structural schematic diagram of mounting structure of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
The invention discloses a kind of stern seal of tube oil pipe mounting structure, which is used for oil pipe
Or temperature sensor is fixed in stern pipe 1, and guarantees that it will not generate loosening or fall, thus to screw shaft of ship device
Generating damage influences ship normal/cruise.
It includes several through-holes and several thread racks 4 corresponding with through-hole being placed equidistant in stern pipe surface, institute
It states 4 one end of thread rack and is equipped with the fixed part having for fixing the perforation 42 of oil pipe, the other end of the thread rack is then set
It is set to the mounting portion 41 that may pass through through-hole, is equipped with the locking nut 3 being threadedly engaged with it outside the fixed part.
Stern seal of tube oil pipe 2 passes through the perforation for being slightly larger than tubing diameter on the thread rack 4, passes through lock engaged therewith
Tight nut 3 locks oil pipe, locking nut 3 and spiral shell of the locking nut 3 between oil pipe 2 and stern pipe 1, after locking oil pipe
Line bracket 4 is welded and fixed with stern pipe 1.
The diameter of the perforation is greater than the diameter of oil pipe, fixes convenient for the installation of oil pipe, while also can satisfy different straight
The installation of the oil pipe of diameter is fixed.
The through-hole diameter is less than locking nut 3, greater than the diameter of the mounting portion of thread rack 4.It is gone by locking nut 3
Defined position, so that installation site is more acurrate.
Based on this mounting structure, the invention also discloses a kind of installation methods comprising following steps:
Step 1: being placed equidistant with several through-holes on stern pipe 1；The through-hole being arranged on stern pipe 1 needs mechanical tapping, to guarantee aperture ruler
It is very little accurate and prevent stern pipe from deforming.
Step 2: the thread rack 4 of corresponding number, and adjacent spiral shell are fixedly installed on oil pipe 2 according to the quantity of through-hole
The distance between line bracket is consistent with the distance between through-hole adjacent on stern pipe 1, and leads to after fixing thread rack 4
Locking nut 3 is crossed to be locked；Cleaning treatment need to be passed through early period by installing fixed stern seal of tube oil pipe, remove flash removed and impurity,
It is had an impact with preventing impurity from leaving shaft；2 length of stern seal of tube oil pipe need to put certain surplus, to meet the installation need in later period
It wants.
Step 3: by being moved in stern pipe 1 by the oil pipe of step 2 processing, and will be in thread rack 4 and stern pipe 1
Through-hole is corresponding, and the mounting portion of thread rack 4 is arranged across through-hole；First stern pipe 1 is placed on Working rack, makes stern pipe 1
There is welding operating space with ground, adjustment stern pipe 1 makes stern tube body surface through-hole downward, and the oil pipe conveniently handled well is fixed and pacified
Dress, then the oil pipe after at step 2 is moved in stern pipe 1, keep the thread rack 4 locked opposite with corresponding through-hole
It answers, outside the mounting portion emersion stern tube body of thread rack 4.
Step 4: tensing thread rack 4 by mounting portion, and make the inner wall of the abutting stern pipe 1 of locking nut 3, and right
It carries out spot welding, is fixed on stern pipe；
Step 5: the exposed mounting portion outside stern pipe 1 is cut off, and polishes after welding is completed.
Now it is illustrated by taking 73 meters of platform supply vessel stern seal of tube oil pipe mounting structures and method as an example:
Step 1: several through-holes are arranged in suitable distance on stern pipe；
After the finishing of 1 lathe of stern pipe, confirm stern pipe bow stern benchmark, cross on stern pipe 1, by figure requirement every about 500mm
Position open the through-hole of several φ 30mm.The through-hole being arranged on stern pipe 1 needs mechanical tapping, to guarantee the accurate of bore size
And prevent stern pipe 1 from deforming；Opened hole is slightly less than locking nut 3, is greater than thread rack 4, and locking nut 3 plays simultaneously when welding
Weld the effect of cushion block.
Step 2: fixing the spiral shell of corresponding number on oil pipe according to the distance between the quantity of through-hole and through-hole on stern pipe 1
Line bracket 4, and the distance between thread rack 4 is consistent with the distance between through-hole on stern pipe 1, and is loading onto thread rack
Compression is fixed to oil pipe 2 by the locking of locking nut 3 after 4, prevents from loosening；
Stern seal of tube oil pipe is usually the stainless steel tube or copper tube of φ 15x1.5mm, and the length of stern seal of tube oil pipe 2 meets figure
Paper requirement, and certain length machining allowance is respectively put at both ends, to meet the installation needs in later period；Stern seal of tube oil pipe 2 is by cleaning
Processing, removes flash removed and impurity, is had an impact with preventing impurity from leaving shaft, and the side of cleaning string oil can be used in clean method
Formula, the oil pipe high for high-quality cleannes can be handled with compressed air directly blowing；
Step 3: by being moved in stern pipe by the oil pipe of step 2 processing, and by the through-hole in thread rack 4 and stern pipe 1
It is corresponding, and the mounting portion of thread rack 4 is arranged across through-hole；
First stern pipe 1 is placed on Working rack before implementing, stern pipe 1 and ground is made to have certain welding operating space, adjustment stern pipe 1 makes
Stern tube body surface through-hole downward, fix and install by the oil pipe conveniently handled well, then again will by step 2 treated oil
Pipe is moved in 1 ontology of stern pipe, keeps the thread rack 4 locked and corresponding through-hole corresponding, the mounting portion liter of thread rack
Stern pipe 1 is external out；
Step 4: tensing thread rack by mounting portion, and locking nut 3 is made to be close to the inner wall of stern pipe 1, and carry out to it
Spot welding is fixed on stern pipe 1；
The mounting portion that thread rack is clamped with hawkbill or other tools makes the end face of locking nut equably cling to the interior of stern pipe
Wall is navigated to locking nut spot welding on stern pipe with welding gun, the quantity of tack weld and the lock for being dimensioned to tension before ensuring to weld
Relative position between tight nut and stern inside pipe wall does not change, and different according to stern pipe holder structure determine spot welding quantity,
But at least must not be less than 2~3.
Step 5: the exposed mounting portion outside stern pipe 1 is cut off, and polishes after welding is completed, polishing effect
Fruit, with 1 smooth outer surface of stern pipe.
Welding method mainly has argon tungsten-arc welding, manual electric arc welding, CO2 gas shielded arc welding, all thread racks all points
After the completion of weldering positioning, the welding slag of tack-weld is cleaned up, entire welding position is cleaned, there cannot be paint, oil, rust, oxygen
Change skin or the harmful attachment of other welding qualities.Stern pipe through-hole is carried out by sealing weld, weldering, argon arc using argon arc welding or CO2 weldering
After welding current interruption, welding gun must not be removed immediately, so that the argon gas that lag is sent out protects the weld metal under molten bath and high temperature.Weldering
Seam reinforcement is higher by stern pipe face about 2mm.All thread rack welding completions, test to weld seam, face of weld, which should not have, to be split
The defect of the influence welding quality such as seam, overlap, stomata, undercut.After its cooling, by the exposed mounting portion sand outside stern pipe
Wheel or the excision of other tools, then polish flat smooth.
Embodiment is not construed as limitation of the present invention, but any based on spiritual improvements introduced of the invention, all should be
Within protection scope of the present invention.
Claims (7)
1. a kind of stern seal of tube oil pipe mounting structure, it is characterised in that: it includes several through-holes being placed equidistant in stern pipe surface
And several thread racks corresponding with through-hole, described thread rack one end are equipped with consolidating with the perforation for fixing oil pipe
Determine portion, the other end of the thread rack is then set as may pass through the mounting portion of through-hole, be equipped with and its spiral shell outside the fixed part
The locking nut of line cooperation.
2. a kind of stern seal of tube oil pipe mounting structure according to claim 1, it is characterised in that: the diameter of the perforation is big
In the diameter of oil pipe.
3. a kind of stern seal of tube oil pipe mounting structure according to claim 1, it is characterised in that: the through-hole diameter is less than
Locking nut, greater than the diameter of the mounting portion of thread rack.
4. a kind of installation method based on stern seal of tube oil pipe mounting structure described in power 1 or power 2, it is characterised in that: it includes
Following steps:
Step 1: being placed equidistant with several through-holes on stern pipe；
Step 2: the thread rack of corresponding number, and adjacent thread rack are fixedly installed on oil pipe according to the quantity of through-hole
The distance between the distance between through-hole adjacent on stern pipe it is consistent, and pass through locking screw after fixing thread rack
Mother is locked；
Step 3: by being moved in stern pipe by the oil pipe of step 2 processing, and by the through-hole pair in thread rack and stern pipe
It answers, and the mounting portion of thread rack is arranged across through-hole；
Step 4: tensing thread rack by mounting portion, and locking nut is made to be close to the inner wall of stern pipe, and carry out a little to it
Weldering, is fixed on stern pipe；
Step 5: the exposed mounting portion outside stern pipe is cut off, and polishes after welding is completed.
5. according to installation method described in power 3, it is characterised in that: in step 1, the through-hole being arranged on stern pipe needs mechanical tapping.
6. installation method according to claim 3, it is characterised in that: in step 2, install fixed stern seal of tube oil pipe
Early period need to pass through cleaning treatment, remove flash removed and impurity.
7. installation method according to claim 3, it is characterised in that: in step 3, first stern pipe is placed on Working rack,
Stern tube body and ground is set to have welding operating space, adjustment stern tube body makes stern tube body surface through-hole downward, then will be by step
Oil pipe after at rapid two is moved in stern pipe, keeps the thread rack locked corresponding with corresponding through-hole, the installation of thread rack
Portion rises from outside stern tube body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910583766.XA CN110202326B (en) | 2019-07-01 | 2019-07-01 | Mounting structure and mounting method for stern tube sealing oil tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910583766.XA CN110202326B (en) | 2019-07-01 | 2019-07-01 | Mounting structure and mounting method for stern tube sealing oil tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110202326A true CN110202326A (en) | 2019-09-06 |
| CN110202326B CN110202326B (en) | 2020-04-28 |
Family
ID=67795545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910583766.XA Active CN110202326B (en) | 2019-07-01 | 2019-07-01 | Mounting structure and mounting method for stern tube sealing oil tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110202326B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113634991A (en) * | 2021-07-21 | 2021-11-12 | 上海外高桥造船有限公司 | Method for manufacturing stern shaft tube and stern shaft tube manufactured by same |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1354721A (en) * | 1999-05-31 | 2002-06-19 | 斯文斯卡轴承股份公司 | Method for mounting stern tube |
| CN102208779A (en) * | 2011-02-11 | 2011-10-05 | 杨鸿杰 | Method for rapidly inserting cable into sleeve |
| CN202752818U (en) * | 2012-08-07 | 2013-02-27 | 浙江增洲造船有限公司 | Centering and auxiliary installation device of ship propeller shaft |
| CN204137301U (en) * | 2014-09-15 | 2015-02-04 | 中船澄西船舶修造有限公司 | Marine rear shaft dismounting drive end bracket |
| CN204235069U (en) * | 2014-11-28 | 2015-04-01 | 山东沂水机床厂有限公司 | A kind of novel poling guiding device |
| CN108637608A (en) * | 2018-05-21 | 2018-10-12 | 河北诚业建工集团有限责任公司 | Titanium alloy pipeline construction technology |
| CN208619875U (en) * | 2018-08-01 | 2019-03-19 | 四川启创建设工程有限公司 | Municipal underground pipeline lane |
-
2019
- 2019-07-01 CN CN201910583766.XA patent/CN110202326B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1354721A (en) * | 1999-05-31 | 2002-06-19 | 斯文斯卡轴承股份公司 | Method for mounting stern tube |
| CN102208779A (en) * | 2011-02-11 | 2011-10-05 | 杨鸿杰 | Method for rapidly inserting cable into sleeve |
| CN202752818U (en) * | 2012-08-07 | 2013-02-27 | 浙江增洲造船有限公司 | Centering and auxiliary installation device of ship propeller shaft |
| CN204137301U (en) * | 2014-09-15 | 2015-02-04 | 中船澄西船舶修造有限公司 | Marine rear shaft dismounting drive end bracket |
| CN204235069U (en) * | 2014-11-28 | 2015-04-01 | 山东沂水机床厂有限公司 | A kind of novel poling guiding device |
| CN108637608A (en) * | 2018-05-21 | 2018-10-12 | 河北诚业建工集团有限责任公司 | Titanium alloy pipeline construction technology |
| CN208619875U (en) * | 2018-08-01 | 2019-03-19 | 四川启创建设工程有限公司 | Municipal underground pipeline lane |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113634991A (en) * | 2021-07-21 | 2021-11-12 | 上海外高桥造船有限公司 | Method for manufacturing stern shaft tube and stern shaft tube manufactured by same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110202326B (en) | 2020-04-28 |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20190906 Assignee: ZHOUSHAN HAORUILAN SHIPPING TECHNOLOGY DEVELOPMENT CO.,LTD. Assignor: ZHEJIANG INTERNATIONAL MARITIME College Contract record no.: X2024980002312 Denomination of invention: Installation structure and method of stern tube sealing oil pipe Granted publication date: 20200428 License type: Common License Record date: 20240228 |
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| EE01 | Entry into force of recordation of patent licensing contract |