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公开(公告)号：US11598218B2
公开(公告)日：2023-03-07
申请号：US17455108
申请日：2021-11-16
发明人： Kenichi Nishiyama , Yuki Okamoto
IPC分类号： F01D17/00 , F16K11/22 , F16K31/163
摘要： The valve device includes: a valve casing that includes a valve casing main body, in which an inlet flow path, an intermediate flow path, and an outlet flow path are formed, and a lid portion that closes an external opening portion formed in the valve casing main body; an intermediate valve seat portion that is detachable from the valve casing main body; a strainer that extends in a direction connecting the lid portion and the intermediate valve seat portion and is disposed between the lid portion and the intermediate valve seat portion; and an energizing member that is disposed between the strainer and the intermediate valve seat portion and is energized the intermediate valve seat portion toward the valve casing main body. The strainer is disposed with the energizing member pressed toward the valve casing main body.
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公开(公告)号：US20190093501A1
公开(公告)日：2019-03-28
申请号：US16142193
申请日：2018-09-26
发明人： Kenichi Nishiyama
摘要： A stop valve includes a connection-switching part capable of switching a connection state between a rod part having an end portion which is connected to a valve disc and an actuator part which linearly moves the rod part. The connection-switching part includes a concave engaging part which is recessed the rod part, a casing having an accommodation space joined to the concave engaging part formed therein, a plurality of frame pieces, a sleeve part which is movable between the frame piece accommodation position and a frame piece detachment position, and a gas introduction part through which a gas is introduced into the accommodation space. The sleeve part moves from the frame piece detachment position to the frame piece accommodation position using the gas. The casing is in contact with the frame pieces at the frame piece accommodation position when moving toward the second side in the central axis direction.
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公开(公告)号：US11873720B2
公开(公告)日：2024-01-16
申请号：US17805112
申请日：2022-06-02
CPC分类号： F01D11/02 , F01D11/001 , F05D2230/30 , F05D2230/60 , F05D2230/64 , F05D2260/81
摘要： A design method of a center guide pin includes a step of setting a virtual center axis of a casing, a step of acquiring a center position of the center guide pin in a horizontal direction, a step of acquiring, as a first offset amount, an offset amount of the center position of the center guide pin from the virtual center axis of the casing in the horizontal direction, a step of setting a virtual center axis of a diaphragm, a step of acquiring a center position of a groove portion in the horizontal direction, a step of acquiring, as a second offset amount, an offset amount of the center position of the groove portion from the virtual center axis of the diaphragm in the horizontal direction, and a step of designing the center guide pin based on the first offset amount and the second offset amount.
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公开(公告)号：US20180306050A1
公开(公告)日：2018-10-25
申请号：US15771064
申请日：2015-10-28
发明人： Tomoaki Nogami , Takuro Koda , Kenichi Nishiyama
CPC分类号： F01D17/10 , F05D2220/31 , F16K31/44 , G05D7/0647
摘要： A valve device includes a main steam valve that is provided on a steam flow channel, a regulating valve that is provided on the steam flow channel to be connected to the main steam valve in series and that includes a first valve seat and a first valve body, an overload valve that is provided on a branch flow channel which connects a portion of the steam flow channel between the main steam valve and the regulating valve and a steam turbine to each other and that includes a second valve seat and a second valve body, and a driving unit that drives the first valve body and the second valve body as a common driving source of the first valve body and the second valve body such that the first valve body and the second valve body are interlocked with each other.
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公开(公告)号：US11415018B2
公开(公告)日：2022-08-16
申请号：US16794465
申请日：2020-02-19
发明人： Kenichi Nishiyama
摘要： A valve device includes a valve casing 21, an intermediate rod portion 29, and an intermediate actuator unit 30. In the valve casing 21, a rod insertion hole into which the intermediate rod portion 29 can be inserted is formed. The intermediate actuator unit 30 includes a hydraulic cylinder that causes a piston rod portion to advance and retreat in a direction orthogonal to a second center axis direction D2. The hydraulic cylinder includes a rod guide portion that guides movement of the piston rod portion. A gap between an inner circumferential surface of the rod insertion hole and an outer circumferential surface of the intermediate rod portion 29 is formed to be wider than a gap between an inner circumferential surface of the rod guide portion and an outer circumferential surface of the piston rod portion.
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6.发明申请公开(公告)号：US20190195083A1
公开(公告)日：2019-06-27
申请号：US16157284
申请日：2018-10-11
发明人： Kenichi Nishiyama
CPC分类号： F01D17/145 , F16K31/047
摘要： To provide redundancy to a link mechanism provided in a steam turbine. A backup device for a link mechanism includes a stand-by plate suspended from a regulating valve lever as a first link and located immediately below a contact stopper provided on a main rod as a second link. The backup device preferably further includes a clamp that is provided on the regulating valve lever and suspends the stand-by plate. If the links are disjoined due to damage to a joint that joins the links of the link mechanism and thus the main rod is disengaged from the regulating valve lever by its own weight, the contact stopper provided on the main rod is locked by the stand-by plate located immediately below the contact stopper.
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公开(公告)号：US11598219B2
公开(公告)日：2023-03-07
申请号：US17153222
申请日：2021-01-20
发明人： Kenichi Nishiyama
摘要： A valve drive device includes a hydraulic cylinder that is configured to drive a regulating valve, an actuator that is configured to supply hydraulic oil to the hydraulic cylinder, and a connection pipe through which the hydraulic cylinder with the actuator communicate with each other and the hydraulic oil flows. The hydraulic cylinder includes a cylinder body to which the hydraulic oil is supplied, a piston movable in a central axis direction of the cylinder body by the hydraulic oil supplied to the cylinder body, and a cylinder base on which the cylinder body is placed in a state where the central axis direction is coincident with a vertical direction. The cylinder base has hydraulic oil flow path portion connected to the connection pipe and through which the hydraulic oil flows.
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公开(公告)号：US20210231026A1
公开(公告)日：2021-07-29
申请号：US17153222
申请日：2021-01-20
发明人： Kenichi Nishiyama
摘要： A valve drive device includes a hydraulic cylinder that is configured to drive a regulating valve, an actuator that is configured to supply hydraulic oil to the hydraulic cylinder, and a connection pipe through which the hydraulic cylinder with the actuator communicate with each other and the hydraulic oil flows. The hydraulic cylinder includes a cylinder body to which the hydraulic oil is supplied, a piston movable in a central axis direction of the cylinder body by the hydraulic oil supplied to the cylinder body, and a cylinder base on which the cylinder body is placed in a state where the central axis direction is coincident with a vertical direction. The cylinder base has hydraulic oil flow path portion connected to the connection pipe and through which the hydraulic oil flows.
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公开(公告)号：US10605114B2
公开(公告)日：2020-03-31
申请号：US15771064
申请日：2015-10-28
发明人： Tomoaki Nogami , Takuro Koda , Kenichi Nishiyama
摘要： A valve device includes a main steam valve that is provided on a steam flow channel, a regulating valve that is provided on the steam flow channel to be connected to the main steam valve in series and that includes a first valve seat and a first valve body, an overload valve that is provided on a branch flow channel which connects a portion of the steam flow channel between the main steam valve and the regulating valve and a steam turbine to each other and that includes a second valve seat and a second valve body, and a driving unit that drives the first valve body and the second valve body as a common driving source of the first valve body and the second valve body such that the first valve body and the second valve body are interlocked with each other.
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公开(公告)号：US20190234230A1
公开(公告)日：2019-08-01
申请号：US16225568
申请日：2018-12-19
发明人： Kenichi Nishiyama
CPC分类号： F01D17/145 , F01D17/105 , F01D17/18 , F01D17/26 , F05B2220/301 , F05D2220/31 , F16K1/427 , F16K1/44
摘要： The present disclosure has an object to provide a valve device for a turbine in which valve seats of a plurality of valves can be reliably secured to a casing, a turbine including the valve device, and a method for producing the valve device and the turbine. A stop valve device used in a steam turbine includes: a plurality of valves arranged in a chamber into which steam flows; a casing in which the chamber and a plurality of steam channels are formed; and a pressure receiving plate configured to receive pressure of the steam in the chamber to hold two or more valve seats of the two or more valves on the casing.
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