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公开(公告)号：US11353012B2
公开(公告)日：2022-06-07
申请号：US16146641
申请日：2018-09-28
发明人： Joseph Sun , Matt Christopherson , Edwin Schreuder
摘要： An example apparatus to prevent side load in hydraulic override pumps includes a lever rotatably mounted to a support. The apparatus includes a pump cylinder rotatable about a first end of the pump cylinder. The apparatus also includes a pump rod operatively coupled to the lever to move within the pump cylinder based on rotation of the lever. The pump cylinder rotates when the pump rod moves within the pump cylinder.
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公开(公告)号：US20210348696A1
公开(公告)日：2021-11-11
申请号：US17315881
申请日：2021-05-10
IPC分类号： F16K31/42
摘要： Universal control circuitry for an electro-hydraulic valve actuator system includes logic gate circuitry to control one or more of a closing solenoid valve, an opening solenoid valve, an emergency shutdown solenoid valve, and a hydraulic fluid pump motor to route hydraulic fluid through a hydraulic circuit to actuate a valve via a hydraulic actuator according to received commands. The universal control circuitry is configured to control operation for multiple different configurations of a hydraulic valve actuator system including double-acting configurations, single-acting spring-to-open configurations, and single-acting spring-to-close configurations, each with or without an emergency shutdown arrangement (which may be configured to trip based on an external shutdown input alone or in combination with a local system power failure), a hydraulic accumulator, and maintained or momentary input commands.
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公开(公告)号：US20210025411A1
公开(公告)日：2021-01-28
申请号：US16523760
申请日：2019-07-26
发明人： Matt Christopherson , Michael Cheng , Joseph Sun
摘要： Manual hydraulic override pumps for use with actuators are described herein. An example apparatus includes a manifold including a reservoir port to be fluidly coupled to a reservoir of fluid, a pump port to be fluidly coupled to a pump, a first actuator port to be fluidly coupled to a first chamber of an actuator, and a second actuator port to be fluidly coupled to a second chamber of the actuator. The example apparatus also includes a rotor disposed in a cavity formed in the manifold. The rotor is rotatable between a first actuating position in which the rotor fluidly couples the first actuator port and the pump port, and a second actuating position in which the rotor fluidly couples the second actuator port and the pump port.
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公开(公告)号：US10139804B2
公开(公告)日：2018-11-27
申请号：US15460770
申请日：2017-03-16
摘要： The present disclosure envisages a system and method for self-calibration of an actuator. The system comprises a pressure spike sensing and control circuit, a travel limit setting circuit and a profile generation circuit. The pressure spike sensing and control circuit is configured to check and set an operating pressure of the actuator. The travel limit setting circuit is configured to check and set the travel limit of the actuator. The profile generation circuit is configured to generate the profiles of a set of parameters of the actuator.
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公开(公告)号：US20170285607A1
公开(公告)日：2017-10-05
申请号：US15460770
申请日：2017-03-16
CPC分类号： G05B19/371 , F15B19/002 , F16K31/02 , F16K37/005 , G05B2219/39024
摘要： The present disclosure envisages a system and method for self-calibration of an actuator. The system comprises a pressure spike sensing and control circuit, a travel limit setting circuit and a profile generation circuit. The pressure spike sensing and control circuit is configured to check and set an operating pressure of the actuator. The travel limit setting circuit is configured to check and set the travel limit of the actuator. The profile generation circuit is configured to generate the profiles of a set of parameters of the actuator.
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公开(公告)号：US09702442B2
公开(公告)日：2017-07-11
申请号：US14930919
申请日：2015-11-03
发明人： Harry Hobert
CPC分类号： F16H21/44 , F15B15/06 , F16H25/18 , F16H33/00 , F16H37/12 , F16H53/02 , F16K31/1225 , F16K31/1635 , F16K31/465 , F16K31/52
摘要： An example rotary actuator includes a cam that is to be coupled to a valve. The cam is rotatable about an axis. The example rotary actuator also includes a linear actuator having a stem movable along a path offset from and perpendicular to the axis and a chain having a first end and a second end opposite the first end. The first end of the chain is coupled to the stem and the second end of the chain coupled to the cam. The chain is disposed around at least a portion of an outer edge of the cam, and movement of the stem along the path rotates the cam about the axis.
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公开(公告)号：US20160273561A1
公开(公告)日：2016-09-22
申请号：US14662672
申请日：2015-03-19
CPC分类号： F15B20/00 , F15B1/024 , F15B1/025 , F15B1/04 , F15B3/00 , F15B13/0401 , F15B15/12 , F15B2201/00 , F15B2201/20 , F15B2211/20515 , F15B2211/212 , F15B2211/275 , F15B2211/865
摘要： Control fluid power apparatus and related methods are disclosed. An example control fluid power apparatus includes a first housing having a first piston defining a first chamber and a second chamber, where the first chamber receives a control fluid and the second chamber receives a process fluid from a process system. The first chamber is oriented above the second chamber when the control fluid power apparatus is coupled to a control valve assembly. A second housing has a second piston defining a third chamber and a fourth chamber, where the third chamber receives the control fluid and the second chamber receives the process fluid. The third chamber is oriented above the fourth chamber when the control fluid power apparatus is coupled to the control valve assembly.
摘要翻译： 公开了控制流体动力装置及相关方法。 示例性控制流体动力设备包括具有限定第一室和第二室的第一活塞的第一壳体，其中所述第一室接收控制流体，并且所述第二室从过程系统接收过程流体。 当控制流体动力装置联接到控制阀组件时，第一腔室定向在第二腔室的上方。 第二壳体具有限定第三室和第四室的第二活塞，其中第三室接收控制流体，第二室容纳处理流体。 当控制流体动力装置联接到控制阀组件时，第三腔室定向在第四腔室的上方。
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公开(公告)号：US20240309965A1
公开(公告)日：2024-09-19
申请号：US18676378
申请日：2024-05-28
摘要： Universal control circuitry for an electro-hydraulic valve actuator system includes logic gate circuitry to control one or more of a closing solenoid valve, an opening solenoid valve, an emergency shutdown solenoid valve, and a hydraulic fluid pump motor to route hydraulic fluid through a hydraulic circuit to actuate a valve via a hydraulic actuator according to received commands. The universal control circuitry is configured to control operation for multiple different configurations of a hydraulic valve actuator system including double-acting configurations, single-acting spring-to-open configurations, and single-acting spring-to-close configurations, each with or without an emergency shutdown arrangement (which may be configured to trip based on an external shutdown input alone or in combination with a local system power failure), a hydraulic accumulator, and maintained or momentary input commands.
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9.发明授权公开(公告)号：US11385616B2
公开(公告)日：2022-07-12
申请号：US16125160
申请日：2018-09-07
发明人： Paul Walker , Mahesh Gade
IPC分类号： G05B19/406
摘要： An actuator of a process control device continuously monitors actuator force and records high force values at each position point by continuously executing a routine in a processor of the actuator. The routine includes receiving from a position sensor a current position value indicating a position of a valve element in the valve, and from a force sensor a current force value indicating a force applied by the actuator. The routine also includes retrieving, from a memory device coupled to the processor, a previous force value measured at the current position, and comparing the current force values for the current position with the previous force value for the current position. If the current force value for the current position exceeds the previous force value for the current position, the routine replaces the previous force value for the current position with the current force value for the current position in memory.
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公开(公告)号：US10982788B2
公开(公告)日：2021-04-20
申请号：US16504391
申请日：2019-07-08
IPC分类号： F16K31/383 , F16K31/122 , F16K31/163 , F15B15/14 , F16K1/22 , F15B21/045 , F15B15/24 , F16K1/18
摘要： An actuator assembly includes a cylinder disposed in an actuator housing, the cylinder having a cylinder interior is in fluid communication with a source of pressurized fluid. A ram member has a piston head within the cylinder interior, and pressure on the piston head moves the ram member. An end of the ram member acts on a collar having a collar interior, and an end of a rod member is disposed within the collar interior. The rod member is displaceable relative to the collar such that the end of the rod member does not contact the collar. Accordingly, fluid in the cylinder interior acting on the ram member may expand due to thermal expansion without damaging a hard stop at an opposite end of the rod member and without losing system pressure by triggering a relief valve.
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