CN101649929A - Deep sea flange connecting bolt library screwing device - Google Patents
Deep sea flange connecting bolt library screwing device Download PDFInfo
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- CN101649929A CN101649929A CN200910072466A CN200910072466A CN101649929A CN 101649929 A CN101649929 A CN 101649929A CN 200910072466 A CN200910072466 A CN 200910072466A CN 200910072466 A CN200910072466 A CN 200910072466A CN 101649929 A CN101649929 A CN 101649929A
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Abstract
The invention provides a deep sea flange connecting bolt library screwing device,, an upper petal bolt bin (9), a left petal bolt bin (2) and a right petal bolt bin (15) of the device are in a three-petal arrangement; the device can be integrally suspended on a guide rail of a flange connecting tool frame by a bearing bush (8) and can make linear motion along the axis direction of a seafloor pipeline to insert bolts in stretchers (1) and can rotate around a center shaft of the pipeline can make the bolts aligns to flange holes. The device is positioned at one side of the pipeline flange, the stretchers (1) are same with the flange hole bolts in number, and the stretchers (1) are uniformly distributed on the circumference of the bolt library screwing device. The left petal bolt bin (2) andthe right petal bolt bin (15) are opened during positioning and are closed after positioning, and the bolts are stretched by the stretchers (1) and screwed by a hydraulic motor (22). After the bolts are stretched and screwed, a stretcher fixing cap (24) is separated by a cap drawing plate (10), and the device is separated from the bolts. When the bolt connecting operation is finished, the device is carried by a remote-operated vehicle (ROV) to withdraw from the operation area.
Description
(1) technical field
The present invention relates to the automated job mechanism on the flange fastening means of a kind of deep-sea, specifically a kind of mechanism that can realize bolt storage delivery, the insertion of flange hole bolt and bolt tension pretension function.
(2) background technique
The flange automatic connecting system mainly contains three kinds of connecting means, i.e. bolt connection, claw connect and be connected with clamp.These three kinds of methods are applicable to that all the submarine pipeline that no diver assists connects.Wherein the flange bolt connection has superiority and the extensive use that can not be substituted, and for example sealing and the durability requirement that in ocean deepwater high pressure particular surroundings pipeline is connected is very high, and submarine pipeline flange mechanical type connects the normal bolt connecting mode that adopts.Pipeline connects in brief, controlling special axis after a series of the service of connection devices such as alignment tools will need the two pipeline support fixation of docking and realize the alignment of pipeline axial by remote-controlled vehicle ROV (Remotely Operated Vehicle) on the sea bed, carry the automatic fastening means of flange by ROV again and arrive the piping flange junction point, and the automatic fastening means of control flange carries out flange fine setting hole alignment, and finish being connected of nut and bolt, finally realize the butt joint of two pipelines.
At present, the automatic fastening means of flange mainly is the scientific research product of submarine pipeline tieback aspect.Quite ripe abroad with the technology of tieback under water headed by the U.S. and the Norway, a whole set of underwater work system instrument is arranged, and actual application has been arranged.The BRUTUS system of U.S. Sonsub company, the MATIS system of Acergy company have all had ripe product, and the automatic flange docking system of Switzerland Allseas company has also been applied for patent.Domestic deep water tieback technology is in the starting stage, does not have ready-made pipeline fastening means, mainly carries out tieback by the underwater operation tool of leasing countries such as the U.S. or Norway.
This bolt library screwing device carries on the framework of flange fastening means, has the delivery of bolt, the bolt insertion of flange hole and the function of bolt tension pretension.(1) Method and apparatus for connectingunderwater conduits, sonsub international Ltd.1998; (2) Method and apparatus forunderwater connection of pipe pieces and bolt therefore.Allseas Group S.A.1998; (3) relevant report in bolt storehouse was arranged in the document such as Remote bolted flange connection apparatus and methods of operation therof.StoltOffshore Ltd.2001, but the bolt storehouse open and close device in the above-mentioned document (1) is three valve structures, need secondary to connect with the nut storehouse, have second order error, the trueness error of structure increases; There is similarity in the middle bolt storehouse of bolt storehouse and document (1) in the document (2), as all being three valve structures, bolt pretension function is arranged all.But the bolt storehouse does not provide bolt and tightens the method that separate with extender the back in the document (2); Bolt storehouse and nut storehouse also are connected as a single entity in the document (3), and mechanism hand is installed on it, are used for auxiliary inserting bolt, but its complex structure.
(3) summary of the invention
The object of the present invention is to provide a kind of have bolt storage delivery, the insertion of flange hole bolt and bolt tension pretension function, can satisfy the automatic connecting bolt library screwing device of piping flange that the deep water environments such as subsea requires.
The object of the present invention is achieved like this:
It comprises extender 1, left lobe bolt storehouse 2, pin 3, folding oil hydraulic cylinder 4, pivot pin 5, move back cap means 6, pin 7, bearing shell 8, epivalve bolt storehouse 9, move back cap plate 10, pivot pin 11, pivot pin 12, folding oil hydraulic cylinder 13, pin 14, right lobe bolt storehouse 15, move back cap oil hydraulic cylinder 16.Lobe bolt storehouse 2, a left side is connected with epivalve bolt storehouse 9 by pivot pin 5, folding oil hydraulic cylinder 4, one side shaft pins 3 is installed on it connects, and opposite side is connected with epivalve bolt storehouse 9 by pin 7; Right lobe bolt storehouse 15 structures are the same with left lobe bolt storehouse 2, are connected with epivalve bolt storehouse 9 by pivot pin 12, folding oil hydraulic cylinder 13, one side shaft pins 11 also are installed on it connect, and opposite side is connected with epivalve bolt storehouse 9 by pin 14; Bearing shell 8 is installed on the guide rail of flange fastening means; Extender 1 is installed on backing plate 18, clamping plate 19 and the backing plate 20 along circumferentially being distributed on left lobe bolt storehouse 2, right lobe bolt storehouse 15 and the epivalve bolt storehouse 9; Move back cap means 6 and be used for backing down stretching cap disengaging plate 10, be installed on the backing plate 18; Oil hydraulic motor 22 is installed in backing plate 18, and structure is convenient to dismounting.
1, moves back cap means mainly by moving back cap oil hydraulic cylinder 16 and the tightening member is formed.Move back cap means and be positioned at by set screw 25 and move back above the cap plate 10, be equipped with on it and move back cap oil hydraulic cylinder 16, oil hydraulic cylinder one side is connected on the bearing pin 27, and opposite side is positioned on the mounting plate 43.
2, the extender 1 of drawing mechanism mainly is made of by bolt subdivision nut and stretching oil hydraulic cylinder 36, the subdivision nut is a two halves formula structure, be divided into A and B, stretching oil hydraulic cylinder 36 1 sides are piping flange end faces, opposite side is the subdivision nut, subdivision nut guide rail 30 is connected by set screw 40 with subdivision nut B, Cock screw 31 mounting plates 43 and stretching oil hydraulic cylinder 36; Slide bolt 35 is connected on the mounting plate, guide rail bolt pin nut 38 tightening guide rail bolt pins 29.
The object of the present invention is to provide a kind of simple in structure, reliable bolt library screwing device design of control, this mechanism has bolt storage delivery, the flange hole bolt inserts and bolt tension pretension function.Bolt library screwing device carries on the framework of flange fastening means, can do axial and circumferential along external frame and move.Bolt is installed in the bolt storehouse of bolt library screwing device, and number of bolts is identical with the flange hole count.Under the oil hydraulic cylinder effect, bolt is made circumferential movement and axial feed motion with the bolt storehouse along pipeline, finishes the action to hole and inserting bolt.The present invention has simple in structure, and high reliability features can be applicable to that 3000 meters piping flange is dynamically connected certainly under water.
(4) description of drawings
Fig. 1 is the bolt library screwing device structural drawing;
Fig. 2 is right lobe bolt chamber structure figure;
Fig. 3 is the right lobe bolt chamber structure figure that removes backing plate;
Fig. 4 moves back cap means figure;
Fig. 5 is the drawing mechanism schematic representation;
Fig. 6 is the stretcher composition that removes behind locking cap and half subdivision nut;
Fig. 7 is the drawing mechanism installation diagram.
(5) embodiment
The epivalve bolt storehouse 9 of deep sea flange connecting bolt library screwing device of the present invention, 15 one-tenth three lobes in left lobe bolt storehouse 2 and right lobe bolt storehouse are arranged, device is whole can to hang on the guide rail of flange fastening means framework by bearing shell 8, straight line motion that can coastal bottom tube road axial direction realizes that bolt inserts extender 1, realizes bolt and flange hole alignment around rotatablely moving of pipeline center's axle.Device is positioned piping flange one side, and extender 1 is identical with flange hole bolt number, is distributed on the bolt library screwing device circumference.During the location, open in left lobe bolt storehouse 2 and right lobe bolt storehouse 15, locatees finish left lobe bolt storehouse 2 and right lobe bolt storehouse 15 closures, and bolt is stretched by extender 1, is tightened by oil hydraulic motor 22 again.Move back cap plate 10, backing plate 18, clamping plate 19, backing plate 20 axial stacked placements.Bolt tension is tightened and is finished, and moves back cap plate 10 extender locking cap 24 is broken away from, and device breaks away from bolt.The connecting bolt end of job, open in left lobe bolt storehouse 2 and right lobe bolt storehouse 15, withdraws the operating area by remote-controlled vehicle ROV carrying device.
For example the present invention is done description in more detail below in conjunction with accompanying drawing:
In conjunction with Fig. 1,2,3, bolt library screwing device by extender 1, left lobe bolt storehouse 2, pin 3, folding oil hydraulic cylinder 4, pivot pin 5, move back cap means 6, pin 7, bearing shell 8, epivalve bolt storehouse 9, move back cap plate 10, pivot pin 11, pivot pin 12, folding oil hydraulic cylinder 13, pin 14, right lobe bolt storehouse 15, move back cap oil hydraulic cylinder 16 and form.Bolt library screwing device can carry flange bolt, mainly is made of left lobe bolt storehouse 2, right lobe bolt storehouse 15 and epivalve bolt storehouse 9.Lobe bolt storehouse 2, a left side is the same with right lobe bolt storehouse 15 structures, is symmetrically distributed, and respectively accounts for quadrant.Below be the composition that example is introduced bolt library screwing device with right lobe bolt storehouse 15.Right lobe bolt storehouse 15 is connected with epivalve bolt storehouse 9 by pivot pin 12, and 13 elongations of folding oil hydraulic cylinder and shortening can realize that right lobe bolt storehouse forwards to around pivot pin 12, promptly realizes the folding in right lobe bolt storehouse.Folding oil hydraulic cylinder 13 is connected by pin 11 with epivalve bolt storehouse, is connected by pin 14 with right lobe bolt storehouse.Lobe bolt storehouse 2, a left side is the same with right lobe bolt storehouse 15 structures, also is that folding oil hydraulic cylinder 4 drives 2 rotations of left lobe bolt storehouse.Bearing shell 8 is installed on the guide rail of flange fastening means, can realize axial motion, and bolt is inserted in the flange hole.Extender 1 is used for tensile bolt, reach certain amount of tension after, sleeve 23 is screwed into nut.Move back cap means 6 and be used for backing down stretching cap disengaging plate 10, bolt library screwing device and the bolt that connects are broken away from, concrete structure is seen Fig. 4.Right lobe bolt storehouse comprises welding block 17, backing plate 18, clamping plate 19, backing plate 20, fixing bolt 21 compositions.Extender 1 and oil hydraulic motor 22 are installed on backing plate 19, clamping plate 20 and the backing plate 21, and structure is convenient to dismounting.The mechanism in lobe bolt storehouse, a left side is the same substantially with right lobe bolt storehouse.The right lobe bolt storehouse of removing backing plate by extender 1, oil hydraulic motor 22, sleeve 23, move back cap oil hydraulic cylinder 16 and extender locking cap 24 is formed.The bolt tension of bolt library screwing device is realized by extender 1.Oil hydraulic motor 22 drives sleeves 23 and rotates and realize being screwed into of nuts, moves back the cap means 6 extender locking cap 24 of decorporating.
In conjunction with Fig. 4, move back cap means by set screw 25, axle bed 26, pivot pin 27, move back cap oil hydraulic cylinder 16 and form.Move back cap plate 10 and be installed in above the backing plate by set screw 25, move back 16 controls of cap oil hydraulic cylinder by the earrings formula, the oil hydraulic cylinder elongation drives moves back 10 motions of cap plate, backs down extender locking cap 24, and bolt and extender are broken away from.
In conjunction with Fig. 5 and Fig. 6, extender is made up of Upper gasket 28, guide rail bolt pin 29, extender locking cap 24, subdivision nut guide rail 30, Cock screw 31, guide rail bolt pin 32, lower levelling plate 33, pad 34, slide bolt 35, stretching oil hydraulic cylinder 36, pad 37, guide rail bolt pin nut 38, subdivision nut A39, set screw 40, subdivision nut pin 41 and spring 42.Subdivision nut A39 and stretching oil hydraulic cylinder 36 connect and compose by bolt, and it is installed between two mounting plates, is used to the pretension bolt that stretches, and guarantees the sealability that flange connects.The subdivision nut is a two halves formula structure, is divided into A and B, and that shown in Figure 2 is subdivision nut A39, and structure is in full accord, and there is screw thread its inside.Before the operation of bolt fastening means, insert the subdivision nut and make its screw thread corresponding bolt is terminal, by extender locking cap 24 with bolt being clipped among subdivision nut A39 and the subdivision nut B tightly.Bolt one side is fixed in the subdivision nut like this, and after the nut of waiting to finish the bolt opposite side was screwed into, the elongation by stretching oil hydraulic cylinder 36 came tensioning bolt, and the stretching pretension that provides the stretching pretightening force to finish bolt is screwed into nut by sleeve 23 again.After finishing above work, because subdivision nut and bolt thread link together, stretching oil hydraulic cylinder 36 promotes extender locking cap 24 and moves upward along guide rail bolt pin 29 and guide rail bolt pin 32, breaks away from the subdivision nut.Subdivision nut A and B flick mutually by the spring 42 on subdivision nut pin 41, and subdivision nut guide rail 30 is connected by set screw 40 with subdivision nut B, and subdivision nut B can outwards move along the track at subdivision nut guide rail 30 places.The subdivision nut discharges bolt, and bolt library screwing device can be withdrawn, and flange bolt installs.Upper gasket 28, lower levelling plate 33, pad 34 and pad 37 play the effect that increases lifting surface area respectively.Cock screw 31 mounting plates 43 and stretching oil hydraulic cylinder 36.Slide bolt 35 is connected on the mounting plate.Guide rail bolt pin nut 38 tightening guide rail bolt pin 29 and mounting plates 43.
In conjunction with Fig. 7, the drawing mechanism installation diagram by mounting plate 43, move back cap plate 10, break away from seat 26, pivot pin 27 and move back cap oil hydraulic cylinder 16 and form.Drawing mechanism is fixed on the mounting plate 43, and pivot pin 27 connects the earrings and disengaging seat 26 that moves back cap oil hydraulic cylinder 16.The bolt of flange install retreat cap oil hydraulic cylinder 16 promote with break away from that seat 26 is connected move back cap plate 10, move back cap plate 10 and drive extender locking caps 24 and break away from the subdivision nuts along guide rail bolt pin 32.
Working procedure is as follows:
Open in lobe bolt storehouse 2, a left side and right lobe bolt storehouse 15 when (1) locating, and whole device is navigated to connected pipe one side;
(2) after the location finishes, left lobe bolt storehouse 2 and right lobe bolt storehouse 15 closures, bolt is stretched by extender 1, is tightened by oil hydraulic motor 22 again.
(3) after bolt tension is tightened and finished, move back cap plate 10 extender locking cap 24 is broken away from, device breaks away from bolt.
(4) the connecting bolt end of job, open in left lobe bolt storehouse 2 and right lobe bolt storehouse 15, withdraws the operating area by remote-controlled vehicle ROV carrying device.
Claims (3)
1, a kind of deep sea flange connecting bolt library screwing device, it comprises extender (1), left lobe bolt storehouse (2), pin (3), folding oil hydraulic cylinder (4), pivot pin (5), moves back cap means (6), pin (7), bearing shell (8), epivalve bolt storehouse (9), moves back cap plate (10), pivot pin (11), pivot pin (12), folding oil hydraulic cylinder (13), pin (14), right lobe bolt storehouse (15), move back cap oil hydraulic cylinder (16); It is characterized in that: left lobe bolt storehouse (2) is connected with epivalve bolt storehouse (9) by pivot pin (5), and folding oil hydraulic cylinder (4) is installed on it, and a side shaft pin (3) connects, and opposite side is connected with epivalve bolt storehouse (9) by pin (7); Right lobe bolt storehouse (15) structure is the same with left lobe bolt storehouse (2), is connected with epivalve bolt storehouse (9) by pivot pin (12), and folding oil hydraulic cylinder (13) also is installed on it, and a side shaft pin (11) connects, and opposite side is connected with epivalve bolt storehouse (9) by pin (14); Bearing shell (8) is installed on the guide rail of flange fastening means; Extender (1) is installed on backing plate (18), clamping plate (19) and the backing plate (20) along circumferentially being distributed on left lobe bolt storehouse (2), right lobe bolt storehouse (15) and the epivalve bolt storehouse (9); Move back cap means (6) and be used for backing down stretching cap disengaging plate (10), be installed on the backing plate (18); Oil hydraulic motor (22) is installed on the backing plate (18).
2, deep sea flange connecting bolt library screwing device according to claim 1 is characterized in that: move back cap means and mainly form by moving back cap oil hydraulic cylinder (16) and tightening member; Move back cap means and be positioned at by set screw (25) and move back above the cap plate (10), be equipped with on it and move back cap oil hydraulic cylinder (16), oil hydraulic cylinder one side is connected on the bearing pin (27), and opposite side is positioned on the mounting plate (43).
3, deep sea flange connecting bolt library screwing device according to claim 1 and 2, it is characterized in that: the extender of drawing mechanism (1) mainly is made of by bolt subdivision nut and stretching oil hydraulic cylinder (36), the subdivision nut is a two halves formula structure, be divided into A and B, stretching oil hydraulic cylinder (36) one sides are piping flange end faces, opposite side is the subdivision nut, subdivision nut guide rail (30) is connected by set screw (40) with subdivision nut B, Cock screw (31) mounting plate (43) and stretching oil hydraulic cylinder (36); Slide bolt (35) is connected on the mounting plate, guide rail bolt pin nut (38) tightening guide rail bolt pin (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100724661A CN101649929B (en) | 2009-07-07 | 2009-07-07 | Deep sea flange connecting bolt library screwing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100724661A CN101649929B (en) | 2009-07-07 | 2009-07-07 | Deep sea flange connecting bolt library screwing device |
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| Publication Number | Publication Date |
|---|---|
| CN101649929A true CN101649929A (en) | 2010-02-17 |
| CN101649929B CN101649929B (en) | 2011-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100724661A Active CN101649929B (en) | 2009-07-07 | 2009-07-07 | Deep sea flange connecting bolt library screwing device |
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| CN104551627A (en) * | 2013-10-12 | 2015-04-29 | 中交广州航道局有限公司 | Hydraulic multi-axis screwing device for flange bolts |
| CN104741911A (en) * | 2013-12-31 | 2015-07-01 | 中核武汉核电运行技术股份有限公司 | Integral tensioning control system for manhole cover bolt of vapor generator |
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| CN105269311A (en) * | 2015-11-25 | 2016-01-27 | 中国海洋石油总公司 | Automatic locating synchronous lead-in device for submarine pipeline flange bolt |
| CN105414948A (en) * | 2016-01-19 | 2016-03-23 | 喻明 | Bolt-tensioning-pretightened device and assembly formed by bolt-tensioning-pretightened device |
| CN106439222A (en) * | 2016-11-03 | 2017-02-22 | 东北石油大学 | Underwater robot used for submarine pipeline connecting installation |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6260252B1 (en) * | 1995-10-25 | 2001-07-17 | Allseas Group S.A. | Method and apparatus for assembling or disassembling an installation present on a seabed |
| US6767165B1 (en) * | 1998-04-03 | 2004-07-27 | Sonsub International Ltd. | Method and apparatus for connecting underwater conduits |
| NL1005891C2 (en) * | 1997-04-24 | 1998-10-27 | Allseas Group Sa | Method and device for connecting pipe sections and bolt therefor under water. |
| CN100540968C (en) * | 2008-04-25 | 2009-09-16 | 哈尔滨工程大学 | Bolt insertion that deep water flange is dynamically connected certainly and flange are to aperture apparatus |
| CN100554743C (en) * | 2008-06-04 | 2009-10-28 | 哈尔滨工程大学 | Integral remote pipe flange bolt connection implement |
| CN101418876B (en) * | 2008-12-04 | 2010-06-02 | 哈尔滨工程大学 | Nut screwing device for submarine pipeline flange automatic joint tool device |
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| CN103111833A (en) * | 2013-02-06 | 2013-05-22 | 哈尔滨工程大学 | Assembly and disassembly tool for clamping-pressing type mechanical connector |
| CN105164879B (en) * | 2013-03-26 | 2017-12-26 | 普睿司曼股份公司 | For can the automatic of wet type mating connection component tighten device |
| CN105164879A (en) * | 2013-03-26 | 2015-12-16 | 普睿司曼股份公司 | Automated tightener for wet mateable connection assembly |
| CN104551627A (en) * | 2013-10-12 | 2015-04-29 | 中交广州航道局有限公司 | Hydraulic multi-axis screwing device for flange bolts |
| CN103615596A (en) * | 2013-11-14 | 2014-03-05 | 哈尔滨工程大学 | Full-automatic clamping hoop used for seabed jacket repairing |
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| CN105269311A (en) * | 2015-11-25 | 2016-01-27 | 中国海洋石油总公司 | Automatic locating synchronous lead-in device for submarine pipeline flange bolt |
| CN105414948A (en) * | 2016-01-19 | 2016-03-23 | 喻明 | Bolt-tensioning-pretightened device and assembly formed by bolt-tensioning-pretightened device |
| CN106439222A (en) * | 2016-11-03 | 2017-02-22 | 东北石油大学 | Underwater robot used for submarine pipeline connecting installation |
| CN110312865A (en) * | 2017-02-23 | 2019-10-08 | 西门子歌美飒可再生能源公司 | Assembly aid for assisting the assembly of two wind turbine components of a wind turbine and method for assembling two wind turbine components |
| US11215166B2 (en) | 2017-02-23 | 2022-01-04 | Siemens Gamesa Renewable Energy A/S | Assembly assisting device for assisting of the assembling of two wind turbine components of a wind turbine and method for assembling of the two wind turbine components |
| CN108006044A (en) * | 2017-11-28 | 2018-05-08 | 海洋石油工程股份有限公司 | Multiple bolt synchronous introduce adaptive alignment device |
| CN107838669A (en) * | 2017-11-29 | 2018-03-27 | 西南石油大学 | A kind of seabed clamp coupling tools for bolts ' pretension instrument |
| CN107838669B (en) * | 2017-11-29 | 2019-01-25 | 西南石油大学 | A kind of seabed clamp coupling tools for bolts ' pretension tool |
| CN108858060A (en) * | 2018-09-10 | 2018-11-23 | 天津渤海石化有限公司 | A kind of flange clamp device |
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Owner name: OFFSHORE OIL ENGINEERING CO., LTD. HARBIN ENGINEER Owner name: CHINA MARINE PETROLEUM GENERAL CO. Free format text: FORMER OWNER: HARBIN ENGINEERING UNIV. Effective date: 20100825 |
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Inventor after: Li Zhigang Inventor after: Ma Baojia Inventor after: Zhao Dongyan Inventor after: He Ning Inventor after: Fu Jianbo Inventor after: Wang Liquan Inventor after: Wang Wenming Inventor after: Zhang Lan Inventor before: Wang Liquan Inventor before: Zhang Zhihang Inventor before: Wang Wenming Inventor before: Zhang Lan Inventor before: Li Wei Inventor before: Liu Mingzhu Inventor before: Lin Qiuhong Inventor before: Wang Caidong Inventor before: Chang Jiang Inventor before: Shi Dongbing |
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Free format text: CORRECT: ADDRESS; FROM: 150001 INTELLECTUAL PROPERTY OFFICE, DEPARTMENT OF SCIENCE AND TECHNOLOGY, HARBIN ENGINEERING UNIVERSITY, BUILDING 1, NO.145, NANTONG AVENUE, NANGANG DISTRICT, HARBIN CITY, HEILONGJIANG PROVINCE TO: 100010 NO.25, CHAOYANGMEN NORTH STREET, DONGCHENG DISTRICT, BEIJING Free format text: CORRECT: INVENTOR; FROM: WANG LIQUAN WANG WENMING ZHANG LAN LI WEI LIU MINGZHU LIN QIUHONG WANG CAIDONG CHANG JIANG SHI DONGBING ZHANG ZHIHANG TO: LI ZHIGANG MA BAOJIA ZHAO DONGYAN HE NING FU JIANBO WANG LIQUAN WANG WENMING ZHANG LAN |
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Effective date of registration: 20100825 Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Applicant after: China National Offshore Oil Corporation Co-applicant after: Offshore Oil Engineering Co., Ltd. Co-applicant after: Harbin Engineering Univ. Address before: 150001 Heilongjiang, Nangang District, Nantong street, building No. 145, Harbin Engineering University, Intellectual Property Office Applicant before: Harbin Engineering Univ. |
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