Patents by Inventor Ryuhei Takemaru
Ryuhei Takemaru 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).
-
Publication number: 20230184339Abstract: There are provided a steam valve and the like capable of preventing breakage of an auxiliary valve element and effectively suppressing the occurrence of a leak of steam in the auxiliary valve element. In the steam valve of an embodiment, the auxiliary valve element is structured to be in an open state in which the valve rod moves in an opening direction to increase a distance between an auxiliary-valve cap and a main valve element, thereby opening an auxiliary-valve steam introduction hole, and to be in a fully-closed state in which the valve rod moves in a closing direction in which the main valve element is closed to bring the auxiliary-valve cap and the main valve element into contact with each other, thereby closing the auxiliary-valve steam introduction holes.Type: ApplicationFiled: December 5, 2022Publication date: June 15, 2023Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Osamu SHINDO, Miyako NIMORI, Shunichi HORII, Ryuhei TAKEMARU
-
Publication number: 20220316620Abstract: In a steam valve of an embodiment, a valve element of a comprises: a first valve element part positioned in the closing direction, and including a first valve element part outer peripheral surface configured to surround the valve rod; and a second valve element part positioned in the opening direction, and including a second valve element part outer peripheral surface configured to surround the valve rod. The first valve element part outer peripheral surface is a curved surface formed to have a diameter increased toward the opening direction. A diameter of boundary position between the first valve element part outer peripheral surface and the second valve element part outer peripheral surface is the same as a seat diameter of valve seat at which the valve element is brought into contact with the valve seat when the steam valve is set to a fully-closed state.Type: ApplicationFiled: February 9, 2022Publication date: October 6, 2022Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Osamu SHINDO, Miyako NIMORI, Shunichi HORII, Ryuhei TAKEMARU
-
Patent number: 9790805Abstract: In the embodiment, a steam valve device has, a steam regulating valve, and an intermediate flow path connecting the main steam stop valve and the steam regulating valve. The main steam stop valve and the steam regulating valve respectively have: casings where flow paths are formed between horizontal inlet ports and outlet ports opened downward and valve seats are arranged in the flow paths; valve elements movable up and down in the casings; and valve rods for driving the valve elements. The valve rods extend upward, and they are pulled off upward in a direction to outside of the casings when opening the flow paths. The intermediate flow path changes the flow direction of main steam flowing out of the outlet port of the main steam stop valve from downward direction to horizontal direction to guide the main steam toward the outlet ports of the steam regulating valves.Type: GrantFiled: March 19, 2012Date of Patent: October 17, 2017Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Ryuhei Takemaru, Osamu Shindo, Toshihiko Endo
-
Publication number: 20120240580Abstract: In the embodiment, a steam valve device has, a steam regulating valve, and an intermediate flow path connecting the main steam stop valve and the steam regulating valve. The main steam stop valve and the steam regulating valve respectively have: casings where flow paths are formed between horizontal inlet ports and outlet ports opened downward and valve seats are arranged in the flow paths; valve elements movable up and down in the casings; and valve rods for driving the valve elements. The valve rods extend upward, and they are pulled off upward in a direction to outside of the casings when opening the flow paths. The intermediate flow path changes the flow direction of main steam flowing out of the outlet port of the main steam stop valve from downward direction to horizontal direction to guide the main steam toward the outlet ports of the steam regulating valves.Type: ApplicationFiled: March 19, 2012Publication date: September 27, 2012Inventors: Ryuhei TAKEMARU, Osamu SHINDO, Toshihiko ENDO
-
Publication number: 20080011366Abstract: In a steam valve, a strainer is arranged between a valve body and a valve casing in which the valve body is accommodated, and a screen assembly is mounted on an outer peripheral portion of the strainer. The screen assembly includes a temporary screen unit and a permanent screen unit which is arranged inside the temporary screen unit. Each of the screen units is a substantially cylindrical structure made of a plate formed with perforations.Type: ApplicationFiled: July 11, 2007Publication date: January 17, 2008Applicant: KABUSHHIKI KAISHA TOSHIBAInventor: Ryuhei TAKEMARU
-
Patent number: 7284569Abstract: In a steam valve, a strainer is arranged between a valve body and a valve casing in which the valve body is accommodated, and a screen assembly is mounted on an outer peripheral portion of the strainer. The screen assembly includes a temporary screen unit and a permanent screen unit which is arranged inside the temporary screen unit. Each of the screen units is a substantially cylindrical structure made of a plate formed with perforations.Type: GrantFiled: October 4, 2004Date of Patent: October 23, 2007Assignee: Kabushiki Kaisha ToshibaInventor: Ryuhei Takemaru
-
Publication number: 20060070666Abstract: In a steam valve, a strainer is arranged between a valve body and a valve casing in which the valve body is accommodated, and a screen assembly is mounted on an outer peripheral portion of the strainer. The screen assembly includes a temporary screen unit and a permanent screen unit which is arranged inside the temporary screen unit. Each of the screen units is a substantially cylindrical structure made of a plate formed with perforations.Type: ApplicationFiled: October 4, 2004Publication date: April 6, 2006Applicant: KABUSHIKI KAISHA TOSHIBAInventor: Ryuhei Takemaru