Patents by Inventor Naoya TATSUMI
Naoya TATSUMI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11939881Abstract: A platform of a gas turbine rotor blade according to one embodiment includes a groove portion recessed from an end surface on a trailing edge side toward a leading edge side. A bottom portion of the groove portion overlaps at least a blade-shaped portion when viewed from a radial direction.Type: GrantFiled: March 23, 2023Date of Patent: March 26, 2024Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Ryo Murata, Yuji Komagome, Naoya Tatsumi, Hiroki Kitada, Shunsuke Torii
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Publication number: 20230392505Abstract: A platform of a gas turbine rotor blade according to one embodiment includes a groove portion recessed from an end surface on a trailing edge side toward a leading edge side. A bottom portion of the groove portion overlaps at least a blade-shaped portion when viewed from a radial direction.Type: ApplicationFiled: March 23, 2023Publication date: December 7, 2023Inventors: Ryo MURATA, Yuji KOMAGOME, Naoya TATSUMI, Hiroki KITADA, Shunsuke TORII
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Patent number: 11781445Abstract: According to an embodiment, a turbine casing comprises a cooling air supply unit configured to supply a cooling air to an interior space of a casing of a gas turbine, and the cooling air supply unit includes: a first supply unit disposed in an upper half of the casing so as to face a first region and configured to supply the cooling air to the first region, where the first region is a region on a radially outer side of a plurality of combustors arranged annularly around a rotor; and a second supply unit disposed so as to face a second region and configured to supply the cooling air to the second region, where the second region is a region on a radially inner side of the plurality of combustors.Type: GrantFiled: March 4, 2020Date of Patent: October 10, 2023Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Tetsuya Shimmyo, Shunsuke Torii, Masanori Yuri, Naoya Tatsumi, Shingo Yamasue
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Patent number: 11293350Abstract: A seal segment (11) includes a retainer (21), a seal body (13) having a thin plate seal piece (20), a high-pressure side plate (23), a low-pressure side plate, a retainer simulating section (51) further extending in the circumferential direction (Dc) from an end portion of the retainer (21) in the circumferential direction (Dc), and a block body (50) including a seal body simulation section (53) extending inward in the radial direction (Dr) from the retainer simulation section. The high-pressure side plate (23) and the low-pressure side plate cover at least a part of the seal body simulation section (53) of the block body (50).Type: GrantFiled: April 21, 2017Date of Patent: April 5, 2022Assignee: MITSUBISHI POWER, LTD.Inventors: Azumi Yoshida, Hidekazu Uehara, Shin Nishimoto, Naoya Tatsumi, Kohei Ozaki
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Publication number: 20220090517Abstract: According to an embodiment, a turbine casing comprises a cooling air supply unit configured to supply a cooling air to an interior space of a casing of a gas turbine, and the cooling air supply unit includes: a first supply unit disposed in an upper half of the casing so as to face a first region and configured to supply the cooling air to the first region, where the first region is a region on a radially outer side of a plurality of combustors arranged annularly around a rotor; and a second supply unit disposed so as to face a second region and configured to supply the cooling air to the second region, where the second region is a region on a radially inner side of the plurality of combustors.Type: ApplicationFiled: March 4, 2020Publication date: March 24, 2022Inventors: Tetsuya SHIMMYO, Shunsuke TORII, Masanori YURI, Naoya TATSUMI, Shingo YAMASUE
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Patent number: 11268445Abstract: In a gas turbine, a plurality of blade ring parts each include a plurality of first cooling flow passages, a plurality of second cooling flow passages, and a return flow passage. The first cooling flow passages are disposed on the outer side in a radial direction centering on a rotation axis, extend in an axial direction, and are disposed aligned in an axial rotation direction. The second cooling flow passages are disposed on an inner side in the radial direction with respect to the first cooling flow passages, extend in the axial direction, and are disposed aligned in the axial rotation direction. The return flow passage connects end parts of each of the first cooling flow passages and the second cooling flow passages on the same side in the axial direction with each other.Type: GrantFiled: May 10, 2018Date of Patent: March 8, 2022Assignee: MITSUBISHI POWER, LTD.Inventors: Shinya Hashimoto, Naoya Tatsumi, Hiroyuki Yamazaki, Yuki Sugawara
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Publication number: 20210079846Abstract: In a gas turbine, a plurality of blade ring parts each include a plurality of first cooling flow passages, a plurality of second cooling flow passages, and a return flow passage. The first cooling flow passages are disposed on the outer side in a radial direction centering on a rotation axis, extend in an axial direction, and are disposed aligned in an axial rotation direction. The second cooling flow passages are disposed on an inner side in the radial direction with respect to the first cooling flow passages, extend in the axial direction, and are disposed aligned in the axial rotation direction. The return flow passage connects end parts of each of the first cooling flow passages and the second cooling flow passages on the same side in the axial direction with each other.Type: ApplicationFiled: May 10, 2018Publication date: March 18, 2021Inventors: Shinya HASHIMOTO, Naoya TATSUMI, Hiroyuki YAMAZAKI, Yuki SUGAWARA
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Patent number: 10927765Abstract: A seal segment (11) includes a seal body having a plurality of laminated thin plate seal pieces (20), and a high-pressure side plate (23). The high-pressure side plate (23) includes an outer diameter side edge portion (23b) which is an outer edge portion in the radial direction (Dr) and extends in a circular are shape in the circumferential direction (Dc), an inner diameter side edge portion (23c) which is an inner edge portion in a radial direction (Dr) and extends in a circular arc shape in the circumferential direction (Dc), and a front edge portion (23d) which is an edge portion on a front side in the rotational direction (Bc). The high-pressure side plate (23) further includes a reinforcing portion (40) only in a region of the high-pressure side plate (23) on the front side in the rotational direction (Bc).Type: GrantFiled: April 19, 2017Date of Patent: February 23, 2021Assignee: MITSUBISHI POWER, LTD.Inventors: Azumi Yoshida, Hidekazu Uehara, Shin Nishimoto, Naoya Tatsumi, Kohei Ozaki
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Patent number: 10876481Abstract: A seal segment includes a retainer extending in a circumferential direction of a rotary shaft on an outer circumferential side of the rotary shaft; a first seal body which has a plurality of first thin plate seal pieces extending inward in a radial direction from the retainer and laminated in the circumferential direction; a high-pressure side plate; a low-pressure side plate; and a second seal body having a plurality of second thin plate seal pieces which are laminated at an end portion of the retainer in the circumferential direction, extend inward in the radial direction, and have fluttering resistance higher than the first thin plate seal piece. The high-pressure side plate and the low-pressure side plate cover at least a part of the second seal body in the circumferential direction.Type: GrantFiled: May 2, 2017Date of Patent: December 29, 2020Assignees: MITSUBISHI HITACHI POWER SYSTEMS, LTD., EAGLE INDUSTRY CO., LTD.Inventors: Azumi Yoshida, Hidekazu Uehara, Shin Nishimoto, Naoya Tatsumi, Kohei Ozaki, Toru Kono, Ryu Kikuchi
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Publication number: 20190162120Abstract: A seal segment (11) includes a retainer (21), a seal body (13) having a thin plate seal piece (20), a high-pressure side plate (23), a low-pressure side plate, a retainer simulating section (51) further extending in the circumferential direction (Dc) from an end portion of the retainer (21) in the circumferential direction (Dc), and a block body (50) including a seal body simulation section (53) extending inward in the radial direction (Dr) from the retainer simulation section. The high-pressure side plate (23) and the low-pressure side plate cover at least a part of the seal body simulation section (53) of the block body (50).Type: ApplicationFiled: April 21, 2017Publication date: May 30, 2019Applicant: Mitsubishi Hitachi Power Systems, Ltd.Inventors: Azumi YOSHIDA, Hidekazu UEHARA, Shin NISHIMOTO, Naoya TATSUMI, Kohei OZAKI
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Publication number: 20190145320Abstract: A seal segment (11) includes a seal body having a plurality of laminated thin plate seal pieces (20), and a high-pressure side plate (23). The high-pressure side plate (23) includes an outer diameter side edge portion (23b) which is an outer edge portion in the radial direction (Dr) and extends in a circular are shape in the circumferential direction (Dc), an inner diameter side edge portion (23c) which is an inner edge portion in a radial direction (Dr) and extends in a circular arc shape in the circumferential direction (Dc), and a front edge portion (23d) which is an edge portion on a front side in the rotational direction (Bc). The high-pressure side plate (23) further includes a reinforcing portion (40) only in a region of the high-pressure side plate (23) on the front side in the rotational direction (Bc).Type: ApplicationFiled: April 19, 2017Publication date: May 16, 2019Applicant: Mitsubishi Hitachi Power Systems, Ltd.Inventors: Azumi Yoshida, Hidekazu Uehara, Shin Nishimoto, Naoya Tatsumi, Kohei Ozaki
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Publication number: 20190136766Abstract: A seal segment includes a retainer extending in a circumferential direction of a rotary shaft on an outer circumferential side of the rotary shaft; a first seal body which has a plurality of first thin plate seal pieces extending inward in a radial direction from the retainer and laminated in the circumferential direction; a high-pressure side plate; a low-pressure side plate; and a second seal body having a plurality of second thin plate seal pieces which are laminated at an end portion of the retainer in the circumferential direction, extend inward in the radial direction, and have fluttering resistance higher than the first thin plate seal piece. The high-pressure side plate and the low-pressure side plate cover at least a part of the second seal body in the circumferential direction.Type: ApplicationFiled: May 2, 2017Publication date: May 9, 2019Applicants: Mitsubishi Hitachi Power Systems, Ltd., Eagle Industry Co., Ltd.Inventors: Azumi YOSHIDA, Hidekazu UEHARA, Shin NISHIMOTO, Naoya TATSUMI, Kohei OZAKI, Toru KONO, Ryu KIKUCHI