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21. 发明专利

JP2003175885A GAS TURBINE SHIP 审中-公开
公开(公告)号：JP2003175885A
公开(公告)日：2003-06-24
申请号：JP2001380416
申请日：2001-12-13
申请人： NAT MARITIME RES INST
发明人： KANO TOSHIYUKI , KAWASHIMA HIDEMIKI
IPC分类号： B63B1/38 , B63H21/16 , B63J3/02 , B63J99/00 , F01D15/02 , F01D15/10 , F02C6/10 , F02C7/00 , B63J5/00
摘要： PROBLEM TO BE SOLVED: To provide a gas turbine ship, in which a gas turbine is installed to a bow portion to flow the exhaust gas rearward as microbubbles along a hull outer plate surface below water in the bow portion, so that large reduction in hull resistance is efficiently performed and an amount of carbon dioxide emitted into the air can be reduced. SOLUTION: Electric power from a generator 2 driven by the gas turbine 1 of the bow portion is fed to a main electric motor 5 for driving a propeller through a switch board 22 and a battery 3. The exhaust gas of the gas turbine 1 is fed to a funnel 9 or a microbubble generating apparatus 7 through an exhaust passage switching means 8. Since the exhaust gas fed to the apparatus 7 is press-fed by a pump 13, the exhaust gas flows rearward as the microbubbles along the hull outer plate surface below water so that viscosity resistance of a hull is reduced and the emission amount of the carbon dioxide contained in the exhaust gas is cut. COPYRIGHT: (C)2003,JPO

22. 发明专利

JP2003112689A MANEUVERING METHOD AND MANEUVERING DEVICE OF WATER JET PROPULSION SHIP 审中-公开
公开(公告)号：JP2003112689A
公开(公告)日：2003-04-15
申请号：JP2001308546
申请日：2001-10-04
申请人： NAT MARITIME RES INST
发明人： AIDA MORIFUMI , FUJIWARA TOSHIFUMI
IPC分类号： B63H25/04 , B63B39/06 , B63H11/10
摘要： PROBLEM TO BE SOLVED: To enhance maneuvering performance by quickly, easily, accurately and efficiently performing a course change of a water jet propulsion ship regardless the magnitude of a rudder angle. SOLUTION: A flap is mounted to both sides of a stern of the water jet propulsion ship, and a direction changing operation by a nozzle and the flap in a water jet propulsion device via a steering device are selectively switched to enable a reasonable use, thereby carrying out the course change.

23. 发明专利

JP2002350255A MONITORING METHOD FOR VARIABLE DRIFTING FORCE WORKING ON MEGAFLOAT 失效
公开(公告)号：JP2002350255A
公开(公告)日：2002-12-04
申请号：JP2001153577
申请日：2001-05-23
申请人： NAT MARITIME RES INST
发明人： KATO SHUNJI , NANBA YASUHIRO
IPC分类号： G01L5/00 , B63B39/00 , G01M10/00
摘要： PROBLEM TO BE SOLVED: To provide a monitoring method for easily and accurately monitoring variable drifting force working on a megafloat when all the necessary information cannot be measured and elastic behavior should be taken into consideration even though momentary information about an incident wave height and a pressure proportional to the square of the incident wave height is required over the whole immersed water surface of a float for evaluation of the variable drifting force. SOLUTION: Using shallow draft of the megafloat, information about a component proportional to the square of the incident wave is not required among a pressure working on the float bottom face and a pressure on the float side face, and the variable drifting force is monitored on the basis of a relative water level or a pressure working on the float side face.

24. 发明专利

JP2002145194A MARINE AUTOMATIC STEERING SYSTEM 失效
公开(公告)号：JP2002145194A
公开(公告)日：2002-05-22
申请号：JP2000389537
申请日：2000-11-16
申请人： NAT MARITIME RES INST
发明人： FUTAMURA TADASHI , UENO MICHIO
IPC分类号： B63H25/04 , G05D1/00
摘要： PROBLEM TO BE SOLVED: To provide a marine automatic steering system capable of making coincide an average bow azimuth with a target bow azimuth even to a very low frequency component considered as a stationary disturbance force component among disturbance forces acting to a hull, and freely selecting a variable disturbance component in a range from setting conducting no steering corresponding to the variable disturbance component to setting suppressing bow azimuth deviation small. SOLUTION: In the marine automatic steering system conducting automatic control by giving a command rudder angle to a steering device 2 installed in a hull 1, the momentary bow azimuth deviation Ψd(t) is calculated in a first operation part 6 based on bow azimuth Ψ(t) detected with an azimuth gage 3 and a target bow azimuth Ψr, and a first command steering angle component corresponding to the very low frequency component considered the stationary disturbance force component is calculated in a second operation part 7 based on the bow azimuth deviation Ψd(t) and a yawing period T detected with a yawing period detecting means 4, a second command steering angle component corresponding to the variable disturbance force is calculated in a third operation part 8, and they are added together in a fourth operation part 9 to find a command steering angle.

25. 发明专利

JP2002131205A REPEATED IMPACT TESTER 失效
公开(公告)号：JP2002131205A
公开(公告)日：2002-05-09
申请号：JP2000367788
申请日：2000-10-27
申请人： NAT MARITIME RES INST
发明人： TAKASHIMA ITSUO
IPC分类号： G01N3/34
摘要： PROBLEM TO BE SOLVED: To provide a tester for examining the repeated impact characteristics of a test body by repeatedly letting an impact bar fall freely from a predetermined height, capable of solving the problem of the conventional impact tester being created mainly for obtaining characteristics, when an impact load is exerted to destruct a material cannot conduct a test with a relatively small impact load is exerted repeatedly to damage the material. SOLUTION: The main part of the repeated impact tester is comprised of a stepping motor for winding up the impact bar to a predetermined height and releasing it, an impact bar gripping electromagnet 4 for speedily gripping the impact bar which collides with an impact body and recoils, a load cell 8 for measuring impact loads, and a controller 9 for controlling a series of operations. The impact bar 2 is used for the impact body, and the impact bar is suspended by a flexible wire 3, which will not extend or contract. It is possible to set the impact bar at any given location by the stepping motor 1 using a brake for winding up the wire.

26. 发明专利

JP2002022558A STRAIN GAGE WITH CORRUGATION 失效
公开(公告)号：JP2002022558A
公开(公告)日：2002-01-23
申请号：JP2000243402
申请日：2000-07-07
申请人： NAT MARITIME RES INST
发明人： MAEDA TOSHIO , KITAMURA SHIGERU
IPC分类号： G01L1/00 , G01L1/22
摘要： PROBLEM TO BE SOLVED: To solve such problems that a commercially available strain gage warps when the gage is put into a liquid resin or a paint used as raw material for fiber-reinforced plastic, coating film, or the like, and that, because the molding of the material is relatively soft in its hardening process, the gage sensitivity is lowered to cause difficulty in measurement. SOLUTION: The base 2 of this strain gage is made larger to prevent the lowering of the gage sensitivity, and a corrugation 3 having a curved shape as illustrated is provided around the base so that the strain gage can be embedded without warping in an arbitrary position in the thickness direction.

27. 发明专利

JP2013253570A TURBINE, TURBINE DEVICE, AND TIDAL CURRENT AND OCEAN CURRENT POWER GENERATION EQUIPMENT 审中-公开
公开(公告)号：JP2013253570A
公开(公告)日：2013-12-19
申请号：JP2012130341
申请日：2012-06-08
申请人： NAT MARITIME RES INST
发明人： MINAMI YOSHINARI
IPC分类号： F03D1/02 , F03B3/04 , F03B13/26 , F03D11/00
摘要： PROBLEM TO BE SOLVED: To change the flow of a fluid (water, air or the like) into a rotation torque at a high efficiency.SOLUTION: Both the end part (most outside part) of a first propeller 11 and the end part (most outside part) of a second propeller 12 are connected together by a double-column turbine part 20. The double-column turbine part 20 provided at each of two parts to connect the both end parts. The double-column turbine part 20 is also shaped like airfoils so that the water flow generates rotary torques like the first propeller 11, etc. More specifically, the double-column turbine part 20 functions as a propeller to generate rotary torques for the same flow in the same direction as for the first propeller 11, etc.

28. 发明专利

JP2006226898A METHOD FOR FORMING FUNCTIONAL COATING EXCELLENT IN CORROSION RESISTANCE 审中-公开
公开(公告)号：JP2006226898A
公开(公告)日：2006-08-31
申请号：JP2005042377
申请日：2005-02-18
申请人： UNIV TOKYO MARINE SCI & TECH , UNIV TOKYO , UNIV KYOTO , JAPAN ATOMIC ENERGY AGENCY , NAT MARITIME RES INST , CENTRAL RES INST ELECT , INST RES & INNOVATION , TOSHIBA CORP , KOBE STEEL LTD
发明人： TAKAMASA KANJI , HATSUKU TATSUYA , SEKIMURA NAOTO , OKAMOTO KOJI , ABE HIROYUKI , MISHIMA KAICHIRO , NAKAMURA HIDEO , SHIBAMOTO YASUTERU , UEMATSU SUSUMU , FURUYA MASAHIRO , ONO SHOICHI , MOROOKA SHINICHI , AKIBA YOSHIYUKI , KANO FUMIHISA , YASUNAGA TATSUYA , FUJISAWA KYOSUKE , CHIGUSA TAKESHI , SHIMOJO JUN
IPC分类号： G21D1/00 , C23C4/10 , C23C4/12 , G21C19/307
摘要： PROBLEM TO BE SOLVED: To provide a method for efficiently forming a functional film containing a radiation-induced surface active catalyst and having an excellent corrosion resistance and an excellent stress corrosion crack resistance. SOLUTION: The functional coating having an anticorrosion effect brought about by drop in corrosion potential induced by exposure to radiation is formed on part of or on the whole of a substrate constituting a metal structure exposed to a radiation atmosphere by exposure to plasma. A multi-electrode plasma convergent thermal spray apparatus having a raw material powder charging port provided in the upstream side of a plasma axis extending in the thermal spray direction and a plurality of thermal spray guns arranged around the axis with an equal interval to cause plasma projected from the thermal spray guns to converge on one point is used for thermal-spraying a ceramic powder having a mean particle size of 1-20 μm. COPYRIGHT: (C)2006,JPO&NCIPI

29. 发明专利

JP2003252284A HULL RESISTANCE REDUCTION DEVICE 审中-公开
公开(公告)号：JP2003252284A
公开(公告)日：2003-09-10
申请号：JP2002059469
申请日：2002-03-05
申请人： NAT MARITIME RES INST
发明人： UKON YOSHITAKA , KANO TOSHIYUKI , HINO TAKANORI , TSUJIMOTO MASARU , KAWASHIMA HIDEMIKI
IPC分类号： B63B1/38 , B63H21/32
摘要： PROBLEM TO BE SOLVED: To provide a device reducing viscous resistance applied to a hull by paying attention to remarkable high temperature of exhaust gas discharged from a main engine (in particular a gas turbine) of a ship and heating a boundary layer of outside water along an underwater hull outer plate by heat exchange with the exhaust gas. SOLUTION: A power generator 3 is driven by the main engine 2 as the gas turbine, a propelling device 5 is operated by the electric power through an electric motor 4, and the hull outer plate 8 is heated to a high temperature through a duct 9 along the underwater hull outer plate 8 by the high-temperature exhaust gas of the main engine 2 such that the ship resistance (the viscous resistance) during navigation can be reduced. Thereby, the outside water along the hull outer plate 8 boils, and bubbles are generated, or an air film is formed. In the duct 9, only a wall part inside the ship is applied with a heat insulation material 15. COPYRIGHT: (C)2003,JPO

30. 发明专利

JP2003247219A SHIP NAVIGATION FACILITY UNDER BRIDGE 审中-公开
公开(公告)号：JP2003247219A
公开(公告)日：2003-09-05
申请号：JP2002045964
申请日：2002-02-22
申请人： NAT MARITIME RES INST
发明人： YAMANE KENJI , AYA TAKEO , YOSHIDA KOUJIRO , IKAI MICHIAKI
IPC分类号： E02B5/06
摘要： PROBLEM TO BE SOLVED: To provide a ship navigation facility under a bridge enabling ordinary ships to navigate under a low bridge. SOLUTION: A revetment 3 or a side wall 4 is constructed under the bridge 2 erected over a river 1 to form passing route 1S for the ship S. Gates 5 and 6 are provided in the passing route 1S in both sides of the bridge 2 to dam water in the passing route 1S. The revetment 3 is formed with a recess part 7 communicated with the passing route 1S which is constituted to dam the water and non-communicated with the river 1, and an inflatable and deflatable air bag 8 is installed in the recess 7. COPYRIGHT: (C)2003,JPO

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