CN101234667B - Asymmetry prerotation stator for ship - Google Patents
Asymmetry prerotation stator for ship Download PDFInfo
- Publication number
- CN101234667B CN101234667B CN200710007539XA CN200710007539A CN101234667B CN 101234667 B CN101234667 B CN 101234667B CN 200710007539X A CN200710007539X A CN 200710007539XA CN 200710007539 A CN200710007539 A CN 200710007539A CN 101234667 B CN101234667 B CN 101234667B
- Authority
- CN
- China
- Prior art keywords
- prerotation
- stator
- degree
- prerotation stator
- centers
- 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.)
- Active
Links
- 238000010992 reflux Methods 0.000 abstract 1
- 238000009792 diffusion process Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to an asymmetric pre-swirl stator of a boat. To improve the speed performance of a non-large boat with low speed, the invention is provided with the pre-swirl stator applicable to a front part on a propeller at a stern, with reflux characteristics of the boat and rotation direction of the propeller considered; besides, the pre-swirl stator is set with a plurality of asymmetric shapes to evenly load the distribution of the propeller and further improve the efficiency of the propeller and the cavitation characteristics.
Description
Technical field
The present invention relates to a kind of asymmetric prerotation stator of boats and ships.
Consider the characteristic of hull wake flow (wake) and the hand of rotation of screw propeller etc.; The present invention is provided with prerotation stator with multiple unsymmetric form; So that make the load diffusion of screw propeller even, thereby further improve the efficient and cavitation (cavitation) characteristic of screw propeller.
Background technology
Usually, in order to improve the propulsion quality of boats and ships, prerotation stator is set on boats and ships, so that make the maximum propulsion quality of screw propeller (propeller) performance, this screw propeller is used to rotate the tangential direction speed composition of the inflow stream that flows into screw propeller.
The prerotation stator (preswirl stator) that is provided with according to above-mentioned method rotates forward at screw propeller usually, when hull navigates by water forward; Make the current of stern part bend towards the opposite direction of hand of rotation, deliver to propeller again, thereby reduce the rotary current that is created in rear propeller; Improve the propulsion coefficient of screw propeller; Generally speaking, along with the rotation of screw propeller, the rotary current of the hand of rotation equidirectional of generation and screw propeller in the water in the wings; This rotary current is not used in the propelling of hull, reduces the propulsion coefficient of the screw propeller that is equivalent to that part of energy on the contrary.Thereby, reduce such rotary current, then can increase the propulsion coefficient of the screw propeller of certain degree, therefore prerotation stator is set in order to produce with the rightabout rotary current of the hand of rotation of screw propeller.
Under the situation of low speed and non-big ship; Shown in figure 11, the ascending velocity on the propeller plane that is caused by stern shape is big, so the angle of attack (Angle of Attack) that the tangential velocity that is caused by boats and ships at port and starboard makes screw propeller flow into the current of screw propeller when larboard starts and when starting astarboard differs greatly; Therefore; Shown in figure 12, when locating measurement flow rate near the back of screw propeller, the residual tangential velocity of left and right sides differs greatly.
Hence one can see that, when raising the efficiency the prerotation stator that is provided with into purpose by symmetric design with the rotating energy that reclaims screw propeller, causes occurring redundantly relatively the result that tangential velocity on the starboard side offsets (Tangential Velocity Cancellation).
Summary of the invention
The objective of the invention is to; Consider the characteristic of the anti-stream of hull and the hand of rotation of screw propeller etc.; With multiple non-symmetrical shape prerotation stator is set,, thereby further improves the efficient and the cavitation characteristic of screw propeller so that make that the load diffusion of screw propeller is even.
The present invention is the prerotation stator that the place ahead that is applicable to stern propeller is set for the speed ability that improves the non-big ship of low speed; Consider the characteristic of the anti-stream of hull and the hand of rotation of screw propeller etc.; Unsymmetric structure in a variety of forms is provided with prerotation stator; So that make the load diffusion of screw propeller even, thereby further improve the efficient and the cavitation characteristic of screw propeller.
In one aspect of the invention; A kind of asymmetric prerotation stator of boats and ships is provided; It is characterized in that, when prerotation stator is set, be benchmark with axial line of centers; Side is not provided with said prerotation stator astarboard, only fully asymmetricly is 3 said prerotation stators are set radially at port side 45 degree of being separated by respectively.
The asymmetric prerotation stator of boats and ships according to an aspect of the present invention can solve " along with the rotation of screw propeller; the rotary current of the hand of rotation equidirectional of generation and screw propeller in the water in the wings; this rotary current is not used in the propelling of hull; reduce the propulsion coefficient of the screw propeller that is equivalent to that part of energy on the contrary " this technical matters that exists in the above-mentioned prior art, thereby can improve the efficient and the cavitation characteristic of screw propeller.
In another aspect of this invention; A kind of asymmetric prerotation stator of boats and ships being provided, having it is characterized in that, is benchmark with axial line of centers; Being provided with in the structure of prerotation stator that is low speed that prerotation stator is set radially and non-big ship in both sides; With axial line of centers is benchmark, is at port side 3 prerotation stators are set radially, and side is that benchmark asymmetricly is provided with 1 prerotation stator with axial line of centers astarboard.
The asymmetric prerotation stator of boats and ships according to a further aspect in the invention can solve " along with the rotation of screw propeller; the rotary current of the hand of rotation equidirectional of generation and screw propeller in the water in the wings; this rotary current is not used in the propelling of hull; reduce the propulsion coefficient of the screw propeller that is equivalent to that part of energy on the contrary " this technical matters that exists in the above-mentioned prior art, thereby can improve the efficient and the cavitation characteristic of screw propeller.
According to another aspect of the invention; A kind of asymmetric prerotation stator of boats and ships is provided, has it is characterized in that, said prerotation stator is arranged on the place ahead of the screw propeller of stern; Prerotation stator asymmetricly is arranged on port and starboard; The said prerotation stator of asymmetric setting, port side be separated by respectively 45 the degree angle 3 said prerotation stators are set, astarboard side be separated by respectively 60 the degree angle 2 said prerotation stators are set; And, shorten the wing chord length of said starboard side prerotation stator with 75%～85% degree of the wing chord length of port side prerotation stator.
The asymmetric prerotation stator of boats and ships according to another aspect of the invention can solve " along with the rotation of screw propeller; the rotary current of the hand of rotation equidirectional of generation and screw propeller in the water in the wings; this rotary current is not used in the propelling of hull; reduce the propulsion coefficient of the screw propeller that is equivalent to that part of energy on the contrary " this technical matters that exists in the above-mentioned prior art, thereby can improve the efficient and the cavitation characteristic of screw propeller.
Description of drawings
Fig. 1 is the state stereogram that is provided with that illustrates according to the prerotation stator of first embodiment of the invention;
Fig. 2 is the state that the is provided with side pie graph that illustrates according to the prerotation stator of first embodiment of the invention;
Fig. 3 is the front pie graph according to the prerotation stator of first embodiment of the invention;
Fig. 4 is the schematic side pie graph that illustrates according to the prerotation stator of first embodiment of the invention;
Fig. 5 is the state stereogram that is provided with that illustrates according to the prerotation stator of second embodiment of the invention;
Fig. 6 is the side pie graph that illustrates according to the state that is provided with of the prerotation stator of second embodiment of the invention;
Fig. 7 is the front pie graph according to the prerotation stator of second embodiment of the invention;
Fig. 8 is the schematic side pie graph according to the prerotation stator of second embodiment of the invention;
Fig. 9 is the front pie graph according to the prerotation stator of third embodiment of the invention;
Figure 10 is the side pie graph that the state that is provided with of existing prerotation stator is shown;
Figure 11 is the scheme drawing of the tangential speed on propeller plane that in usually low speed and non-big ship, can see;
Figure 12 is the scheme drawing in the rear propeller measurement flow rate of common low speed and non-big ship.
The specific embodiment
Below, specify asymmetric prerotation stator with reference to accompanying drawing according to the boats and ships of first embodiment of the invention.
Fig. 1 is the state stereogram that is provided with that illustrates according to the prerotation stator of first embodiment of the invention; Fig. 2 is the side pie graph that illustrates according to the state that is provided with of the prerotation stator of first embodiment of the invention; Fig. 3 is the front pie graph according to the prerotation stator of first embodiment of the invention, and Fig. 4 is the schematic side pie graph according to the prerotation stator of first embodiment of the invention.
The invention is characterized in; When prerotation stator 1 is set; With the direction of principal axis line of centers is benchmark; Starboard side is not provided with above-mentioned prerotation stator 1, and only is radiation 3 prerotation stators 1 are set at the port side complete asymmetric state in 45 degree ground of being separated by respectively, thereby improves the efficient and the cavitation characteristic of screw propeller.
As shown in Figure 3, the present invention introduces the notion of complete asymmetric prerotation stator 1, at larboard 3 prerotation stators 1 is set, and prerotation stator 1 is not set astarboard.
That is, because side is not used prerotation stator 1 astarboard, therefore; The axial velocity of starboard side accelerates; And disappear owing to flow into the upset phenomenon of the inflow stream of screw propeller 2, the load diffusion of screw propeller 2 becomes evenly, thereby can improve the efficient and the cavitation characteristic of screw propeller 2.
This is explained in further detail; Then with 45 degree 3 prerotation stators 1 are set respectively at port side, side is not provided with prerotation stator 1 astarboard, axial relatively line of centers; Preferably; The angle of the prerotation stator 1 of the top in larboard each prerotation stator 1 is minimum, and the angle of prerotation stator 1 bottom is maximum, and middle prerotation stator 1 has the pitch angle of above-mentioned 2 prerotation stator 1 intermediate degree.
Preferably, the pitch angle of above-mentioned larboard each prerotation stator 1, axial relatively line of centers tilts respectively from top to bottom, and 17 degree, 19 are spent, 23 degree are provided with.
Compare with prerotation stator 1 with the existing structure setting; With as the present invention that provides of above-mentioned structure can improve outside 3～4% the efficient, compare with existing symmetric figure counteraction swivel (reaction pin), reduced about 40 tons weight; Thereby it is highly beneficial from economically; And,, thereby improve the efficient and the cavitation characteristic of screw propeller 2 owing to the load of screw propeller 2 becomes evenly.
Below, with reference to the asymmetric prerotation stator of accompanying drawing detailed description boats and ships according to a second embodiment of the present invention.
Fig. 5 is the block diagram that illustrates according to the state that is provided with of the prerotation stator of second embodiment of the invention; Fig. 6 is the side pie graph according to the state that is provided with of the prerotation stator of second embodiment of the invention; Fig. 7 is the front pie graph according to the prerotation stator of second embodiment of the invention, and Fig. 8 is the schematic side pie graph according to the prerotation stator of second embodiment of the invention.
The invention is characterized in; Being benchmark with axial line of centers, being being provided with in the structure of prerotation stator 1 of the low speed that is provided with prerotation stator 1 radially and non-big ship in both sides, is benchmark with axial line of centers; Be radiation along port side 3 prerotation stators 1 are set; Side is a benchmark with axial line of centers astarboard, and 1 prerotation stator 1 is arranged to unsymmetric structure, thereby improves the efficient and the cavitation characteristic of screw propeller.
With the present invention that said structure provides, be benchmark with axial line of centers, be 3 prerotation stators 1 are set radially at port side 45 degree of being separated by; And; Each axial line of centers is arranged to 17 degree with the prerotation stator 1 of the top in above-mentioned larboard each prerotation stator 1 relatively, and prerotation stator 1 bottom is arranged to 23 degree; And middle prerotation stator 1 is arranged to 19 degree; So that it has the pitch angle of the intermediate degree of above-mentioned 2 prerotation stators 1, on the other hand, side is that datum-plane is provided with mono-prerotation stator 1 with axial line of centers astarboard.
As shown in Figure 7, the present invention introduces the asymmetric prerotation stator notion of in-depth, has been offset the tangential velocity on the starboard side of considerable part by hull, thereby at larboard 3 prerotation stators 1 has been set, and 1 prerotation stator 1 is set astarboard.
As above-mentioned, the quantity of the prerotation stator 1 on the starboard side is decided to be odd number, so the axial velocity on the starboard side accelerates, thereby propeller load distributes and becomes evenly, can improve the efficient and the cavitation characteristic of screw propeller thus.
This is further explained; Then port side be separated by respectively 45 the degree 3 prerotation stators 1 are set, the side horizontal direction is provided with 1 prerotation stator 1 astarboard, preferably; Axial relatively line of centers; In larboard each prerotation stator 1, the angle of prerotation stator 1 topmost is minimum, and the angle of prerotation stator 1 bottom is maximum; Middle prerotation stator 1 has the pitch angle of the intermediate degree of above-mentioned 2 prerotation stators 1, and the preferably axial relatively line of centers of the pitch angle of starboard side prerotation stator 1 begins from the top to be obliquely installed with 22 degree or 28 degree.
Provide the present invention to bring following effect: to compare with the prerotation stator with existing structure 1 when improving 1～2% efficient like above-mentioned structure; Compare with existing symmetric figure counteraction swivel and to have reduced about 25 tons weight; Thereby it is highly beneficial from economically; And,, thereby improved the efficient and the cavitation characteristic of screw propeller 2 owing to the load of screw propeller 2 becomes evenly.
Below, specify the asymmetric prerotation stator of the boats and ships of a third embodiment in accordance with the invention with reference to accompanying drawing.
As shown in Figure 9, the present invention introduces the notion of asymmetric prerotation stator 1, has been offset the tangential velocity on the starboard side of considerable part by hull; So remove 1 prerotation stator 1 of this part; Be provided with 3 at larboard, be provided with 2 astarboard, thereby unnecessary opposing is minimized.
In addition; In order to cooperate desirable incoming flow (on-comming flow) angle of attack; It is big that the pitch angle of the prerotation stator 1 of starboard side becomes relatively; Block flowing of the axle that flows into screw propeller 2 thus, thereby increase the load of the screw propeller 2 of this part, thereby the rising that is caused by hull is flowed and screw propeller 2 loads inhomogeneous even more serious.
Therefore, not only reduce 1 prerotation stator 1 of starboard side, and preferably wing chord (chord) length (length of the side of a ship) of the wing of this side and the wing chord length of opposite flank are foreshortened to 75%～85%, and show optimal result in about 80% length part.
As above-mentioned; Through the prerotation stator 1 and the shortening wing chord length that reduce by 1 starboard side, the axial velocity on the starboard side accelerates, through this effect; The load diffusion of screw propeller 2 becomes evenly, can increase substantially self efficient and cavitation characteristic of screw propeller 2 thus.
That is to say that the present invention is provided with 3 prerotation stators 1 with the angle of 45 degree respectively at port side, side is provided with 2 prerotation stators 1 with the angle of 60 degree respectively astarboard; Axial relatively line of centers, in each prerotation stator 1, the angle of larboard the top is maximum; Middle angle is minimum, angle bottom with above-mentioned 2 intermediate degree, preferably; In the prerotation stator 1 of starboard side; With respect to axial line of centers, the top have with larboard prerotation stator 1 in the identical angle of the top, following have an angle greater than larboard following 2 sums.
Most preferred each prerotation stator 1 is arranged to: axial relatively line of centers, its pitch angle is respectively 12 degree, 6 degree, 10 degree for port side is arranged to from the top, and starboard side is arranged to be respectively from the top 12 degree, 18 degree.
More than illustrate and explained the preferred embodiments of the present invention; But the present invention is not limited to the foregoing description; Under the situation of the principle of the present invention in not deviating from the claim scope; To those skilled in the art, the present invention can have various distortion, and above-mentioned distortion all belongs within the claim scope.
Claims (8)
1. the asymmetric prerotation stator of boats and ships; It is characterized in that; When prerotation stator (1) is set, be benchmark with axial line of centers, side is not provided with said prerotation stator (1) astarboard; Only fully asymmetricly be 3 said prerotation stators (1) are set radially, improve the efficient and the cavitation characteristic of screw propeller at port side 45 degree of being separated by respectively.
2. the asymmetric prerotation stator of boats and ships according to claim 1; It is characterized in that; Axial relatively line of centers; The angle of the prerotation stator (1) of the top is minimum in said larboard each prerotation stator (1), and the angle of prerotation stator bottom (1) is maximum, and middle prerotation stator (1) has the pitch angle of the intermediate degree of said 2 prerotation stators (1).
3. the asymmetric prerotation stator of boats and ships according to claim 2 is characterized in that, with respect to axial line of centers, and the angle tilt setting of the pitch angle of larboard each prerotation stator (1) from beginning to spend with 17 degree, 19 degree, 23 respectively.
4. the asymmetric prerotation stator of boats and ships; It is characterized in that, be benchmark with axial line of centers, is being provided with in the structure of prerotation stator (1) of low speed that prerotation stator (1) is set radially and non-big ship in both sides; With axial line of centers is benchmark; Be at port side 3 prerotation stators (1) are set radially, side is that benchmark asymmetricly is provided with 1 prerotation stator (1) with axial line of centers astarboard, thereby improves the efficient and the cavitation characteristic of revolving oar.
5. the asymmetric prerotation stator of boats and ships according to claim 4 is characterized in that, set 3 the said prerotation stators (1) of port side 45 degree of being separated by are radially and are provided with; And the prerotation stator (1) of the top is arranged to 17 degree in the axial relatively line of centers, said larboard each prerotation stator (1); Prerotation stator bottom (1) is arranged to 23 degree, and middle prerotation stator (1) is arranged to 19 degree, so that make it have the pitch angle of said 2 fixed-wings (1) intermediate degree; On the other hand; Side is a benchmark with axial line of centers astarboard, in central horizontal mono-prerotation stator (1) is set.
6. according to the asymmetric prerotation stator of each described boats and ships in claim 4 or 5; It is characterized in that, be that the axial relatively line of centers of single prerotation stator (1) that benchmark is arranged on central authorities begins from the top to be obliquely installed pitch angle with 22 degree or 28 degree with the axial line of centers of said starboard side.
7. the asymmetric prerotation stator of boats and ships; It is characterized in that; Said prerotation stator (1) is arranged on the place ahead of the screw propeller of stern, and prerotation stator (1) asymmetricly is arranged on port and starboard, the said prerotation stator (1) of asymmetric setting; Port side be separated by respectively 45 the degree angle 3 said prerotation stators (1) are set; Side is provided with 2 said prerotation stators (1) with the angle of 60 degree of being separated by respectively astarboard, and, shorten the wing chord length of said starboard side prerotation stator (1) with 75%～85% degree of the wing chord length of port side prerotation stator (1).
8. the asymmetric prerotation stator of boats and ships according to claim 7; It is characterized in that; It is respectively 12 degree, 6 degree, 10 degree that the angle of the axial relatively line of centers of larboard prerotation stator (1) begins from the top, and it is respectively 12 degree, 18 degree that the angle of the axial relatively line of centers of the prerotation stator of starboard side (1) begins from the top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710007539XA CN101234667B (en) | 2007-02-01 | 2007-02-01 | Asymmetry prerotation stator for ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710007539XA CN101234667B (en) | 2007-02-01 | 2007-02-01 | Asymmetry prerotation stator for ship |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101234667A CN101234667A (en) | 2008-08-06 |
| CN101234667B true CN101234667B (en) | 2012-06-06 |
Family
ID=39918637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710007539XA Active CN101234667B (en) | 2007-02-01 | 2007-02-01 | Asymmetry prerotation stator for ship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101234667B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103387037B (en) * | 2012-05-11 | 2015-12-09 | ***际造船股份有限公司 | The asymmetric Y-shaped fin swing device of boats and ships |
| JP6444501B2 (en) * | 2014-10-24 | 2018-12-26 | サムスン ヘビー インダストリーズ カンパニー リミテッド | Propulsion efficiency improvement device |
| CN105365999B (en) * | 2015-12-14 | 2017-11-17 | 武汉理工大学 | Wide flat Full Ship water conservancy diversion fin system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1072145A (en) * | 1991-11-14 | 1993-05-19 | 三菱重工业株式会社 | Marine reaction fin arrangement |
| JP2004074886A (en) * | 2002-08-13 | 2004-03-11 | Mitsubishi Heavy Ind Ltd | Ship |
| JP2004082929A (en) * | 2002-08-28 | 2004-03-18 | Mitsubishi Heavy Ind Ltd | Method for manufacturing stator fin and stator fin |
-
2007
- 2007-02-01 CN CN200710007539XA patent/CN101234667B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1072145A (en) * | 1991-11-14 | 1993-05-19 | 三菱重工业株式会社 | Marine reaction fin arrangement |
| JP2004074886A (en) * | 2002-08-13 | 2004-03-11 | Mitsubishi Heavy Ind Ltd | Ship |
| JP2004082929A (en) * | 2002-08-28 | 2004-03-18 | Mitsubishi Heavy Ind Ltd | Method for manufacturing stator fin and stator fin |
Non-Patent Citations (2)
| Title |
|---|
| JP61－087198U 1986.06.07 |
| JP62－197495U 1987.12.15 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101234667A (en) | 2008-08-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5632658A (en) | Tractor podded propulsor for surface ships | |
| CN101137538B (en) | Stern structure of ship | |
| US8403716B2 (en) | Twin-skeg ship | |
| CN107089313B (en) | Propeller and ship with low profile catheter | |
| CN202368778U (en) | Combined energy-saving transport ship | |
| KR101421319B1 (en) | Nozzle propeller for ships | |
| Zondervan et al. | On the design and analysis of pre-swirl stators for single and twin screw ships | |
| CN103863541A (en) | Ship propulsion system | |
| CN102020011A (en) | Ducted pre-swirl stator assembly | |
| Mewis | A novel power-saving device for full-form vessels | |
| CN111532407A (en) | Offset type front-mounted pre-rotation guide wheel and ship | |
| JP5081455B2 (en) | Asymmetrical front wing of a ship | |
| CN110316344A (en) | A kind of adjustable propeller whirlpool fin that disappears | |
| CN107676214A (en) | Rudder ball turbine generator after a kind of marine propeller | |
| CN101234667B (en) | Asymmetry prerotation stator for ship | |
| CN205256630U (en) | Pipe type marine propeller | |
| CN106163916A (en) | Produce the vortex generator for reducing propeller noise and the asymmetric wake of vibration | |
| US10703453B2 (en) | Marine vessel | |
| CN111114728A (en) | Ship propeller back-saving vortex-eliminating boosting impeller device | |
| EP1955944B1 (en) | Asymmetric preswirl stator of ship | |
| CN102712353A (en) | Thruster with duct attached and vessel comprising same | |
| CN209096990U (en) | A kind of guide plate type ring duct peculiar to vessel | |
| CN105346697A (en) | Propeller for guide pipe type ship | |
| CN103192947B (en) | A kind of Three-stern and three-screw mono-hull high-speed ship | |
| DK169513B1 (en) | Vessel with only one propeller located in its diametral plane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 3370 Juti Road, Juji City, Gyeongsangnam do, South Korea Patentee after: Hanhua Ocean Co.,Ltd. Address before: Han Guoqingshangnandao Patentee before: DAEWOO SHIPBUILDING & MARINE ENGINEERING Co.,Ltd. |