Patents Assigned to Babcock-Hitachi Kabushiki Kaisya
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Patent number: 8051569Abstract: New and useful method of building a boiler frame significantly reduces the use of high load-lifting height crane and improves the operation efficiency despite bad weather. Multiple levels of steel supporting posts, which are established beforehand, are linked together with their top portion by beams and the 9th floor unit is fixed to the posts at an intermediate floor position temporarily. Suspension rods, which are suspended from lifting jacks, are then connected to the 8th floor unit and jacked up, while floor units made for lower than the 8th floor are connected on the ground to form a multi-floor unit. After connecting the multi-floor unit to the 9th floor unit the temporary fixation is released, the multi-floor unit is lifted up, and each floor unit is permanently fixed to the designated floor position repeatedly and respectively.Type: GrantFiled: January 30, 2007Date of Patent: November 8, 2011Assignees: Hitachi Plant Technologies, Ltd., Babcock-Hitachi Kabushiki KaisyaInventors: Shigeyoshi Kawaguchi, Motoshi Horinouchi, Shinichi Sagawa, Yoshitaka Masuda, Masakatsu Imamura, Minoru Sakino, Yasuaki Kawashima
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Patent number: 7818942Abstract: The floor, which became a block, can easily be attached to the designated floor position, so that the reduction of both the construction cost and the construction period are achieved. It is a method of building the plural floors on the part of the boiler cage part, and one floor 13A is built on a lifting frame 18 put on the ground, and the floor 13A and the lifting frame 18 are both jacked up by jacks 14. Subsequently the lifting frame 18 which separated the floor 13A is jacking down and returned to the ground. Plural floors are built for lower floor from upper floor one after another by repeating such a series of steps.Type: GrantFiled: July 31, 2007Date of Patent: October 26, 2010Assignees: Hitachi Plant Technologies, Ltd., Babcock-Hitachi Kabushiki KaisyaInventors: Kazuhito Nakamitsu, Shigeyoshi Kawaguchi, Shinichirou Takeshita, Yuusuke Yoshida, Yuuji Yokoi, Hiromi Itagaki, Shoji Shinohara, Kenshin Komatsu
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Patent number: 7726264Abstract: New and useful method of installing furnace walls for a boiler that does not require dedicated temporary lifting mechanism and reduces the installation work period significantly is disclosed. The method of installing furnace walls for a boiler configured with an upper portion of boiler proper 30 and a lower portion of boiler proper 40, temporally suspending two left and right face furnace water wall panels 48 among four furnace water wall panels, the upper portion of boiler proper is assembled while it is hanged from a top girder module 28 positioned on the top portion of a center portion in a boiler frame, a furnace rear wall 44 and a furnace front wall 42 among the furnace water wall panels are hanged sequentially, the temporally suspended two left and right face furnace water wall panels 48 are moved to designated positions, and the upper ends of the furnace water wall panels 48, 44 and 42 are connected with the lower end of the upper portion of boiler proper 30.Type: GrantFiled: April 10, 2007Date of Patent: June 1, 2010Assignees: Hitachi Plant Technologies, Ltd., Babcock-Hitachi Kabushiki KaisyaInventors: Shigeyoshi Kawaguchi, Motoshi Horinouchi, Shinichi Sagawa, Yoshitaka Masuda, Masakatsu Imamura, Tadayoshi Mariyama, Yasuaki Kawashima
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Publication number: 20080028723Abstract: The floor, which became a block, can easily be attached to the designated floor position, so that the reduction of both the construction cost and the construction period are achieved. It is a method of building the plural floors on the part of the boiler cage part, and one floor 13A is built on a lifting frame 18 put on the ground, and the floor 13A and the lifting frame 18 are both jacked up by jacks 14. Subsequently the lifting frame 18 which separated the floor 13A is jacking down and returned to the ground. Plural floors are built for lower floor from upper floor one after another by repeating such a series of steps.Type: ApplicationFiled: July 31, 2007Publication date: February 7, 2008Applicants: HITACHI PLANT TECHNOLOGIES, LTD., BABCOCK-HITACHI KABUSHIKI KAISYAInventors: Kazuhito Nakamitsu, Shigeyoshi Kawaguchi, Shinichirou Takeshita, Yuusuke Yoshida, Yuuji Yokoi, Hiromi Itagaki, Shoji Shinohara, Kenshin Komatsu
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Patent number: 5897062Abstract: A fluid jet nozzle has a water chamber accommodating therein pressurized fluid, an orifice communicating with the water chamber and contracting the fluid from the water chamber, a throat communicating with the orifice and through which the fluid from the orifice passes, a multiplication chamber communicating with the throat and receiving the fluid from the throat for multiplying cavitation, and a diffusion chamber receiving the fluid from the multiplication chamber for diffusing the fluid.Type: GrantFiled: October 18, 1996Date of Patent: April 27, 1999Assignees: Hitachi, Ltd., Babcock-Hitachi Kabushiki KaisyaInventors: Kunio Enomoto, Katsuhiko Hirano, Masahiro Otaka, Kazuo Amano, Eisaku Hayashi, Sadato Shimizu, Ren Morinaka, Kazunori Sato