公开(公告)号：US20240271643A1

公开(公告)日：2024-08-15

申请号：US18569355

申请日：2022-06-15

申请人： STI S.R.L

发明人： Flavio Tondolo ,  Nicola Zenoni

IPC分类号： F15B19/00 ,  F15B20/00

CPC分类号： F15B19/005 ,  F15B20/005 ,  F15B2211/50554 ,  F15B2211/5151 ,  F15B2211/8855

摘要： A control and safety system suitable for conveying circuits of pressurized fluids equipped with at least one process valve, the system comprising:—a pressure reducer,—a pilot element,—a control valve,—a selector valve,—a flow amplifier valve, e—a single-acting actuator, wherein the system is provided with a single circuit in which:—a supply line of a working fluid directly connects the pressure reducer, to the control valve and to the flow amplifier valve,—a signal fluid line, directly connected: to the piloting element and to a manual pilot control element, or to the pilot element and to the pressure reducer and to a non-return valve.

公开(公告)号：US12055161B2

公开(公告)日：2024-08-06

申请号：US17770497

申请日：2019-10-23

申请人： Asco, L.P.

发明人： Wayne Tilmos ,  Gary Zahn

IPC分类号： F15B11/12 ,  F15B15/14 ,  F15B15/20

CPC分类号： F15B11/123 ,  F15B15/1409 ,  F15B15/202 ,  F15B2211/8855

摘要： A pneumatic actuator and control valve assembly has a housing with a control cavity for a control valve and an actuator cavity for an actuator piston and rod assembly. The control cavity and actuator cavity both have an elongated shape and are substantially parallel to each other. The control cavity has a supply port and first and second control valve outlet ports and at least one vent port with the control valve being movable through the control cavity for controlling communication between the supply port and the first and second outlet ports. The actuator cavity has first and second ports at the retracted and extended ends for shuttling the piston and within the actuator cavity between a retracted and extended end position. The housing has a first inlet and second inlet for passage of pressurized fluid to and from the housing.

公开(公告)号：US12001200B2

公开(公告)日：2024-06-04

申请号：US17311254

申请日：2019-11-26

申请人： ATLAS COPCO AIRPOWER, NAAMLOZE VENNOOTSCHAP

发明人： Philippe Geuens ,  Ebrahim Louarroudi

IPC分类号： G05B23/02 ,  F15B19/00 ,  F15B20/00 ,  F17D5/00 ,  F17D5/02 ,  G01M3/28 ,  G05B13/02 ,  G05B13/04 ,  G06Q50/06 ,  G06Q10/20

CPC分类号： G05B23/0243 ,  F15B19/005 ,  F15B20/005 ,  F17D5/005 ,  F17D5/02 ,  G01M3/2815 ,  G05B13/0265 ,  G05B13/042 ,  G06Q50/06 ,  F15B2211/50518 ,  F15B2211/634 ,  F15B2211/857 ,  F15B2211/8855 ,  G06Q10/20

摘要： A method is provided for detecting and quantifying leaks in a gas network under pressure or vacuum. The gas network includes one or more sources of compressed gas or vacuum; one or more consumers or consumer areas of compressed gas or vacuum applications; pipelines or a network of pipelines to transport the gas or vacuum; a plurality of sensors which determine one or a plurality of physical parameters of the gas in the gas network. The gas network has controllable or adjustable relief valves and the method involves a training phase and an operational phase.

公开(公告)号：US11946493B2

公开(公告)日：2024-04-02

申请号：US17640531

申请日：2020-08-03

申请人： SMC CORPORATION

发明人： Youji Takakuwa ,  Akihiro Kazama ,  Hiroyuki Asahara ,  Kengo Monden

IPC分类号： F15B11/068 ,  F15B11/04 ,  F15B13/02

CPC分类号： F15B11/068 ,  F15B11/0413 ,  F15B13/027 ,  F15B2211/30505 ,  F15B2211/40515 ,  F15B2211/40584 ,  F15B2211/40592 ,  F15B2211/7053 ,  F15B2211/75 ,  F15B2211/8855

摘要： A flow rate controller and a drive device are provided with a first flow passage connected between an operation switching valve and an air cylinder, and that supplies air to and discharges air from a cylinder chamber of the air cylinder; a first flow rate adjustment part provided in the first flow passage; a second flow passage adjacent to the first flow passage; a pilot check valve provided at a point along the second flow passage; a second flow rate adjustment part connected in series to the pilot check valve at a point along the second flow passage; a pilot air flow passage, one end of which communicates with the operation switching valve and the other end of which is connected to a pilot port of the pilot check valve; and a third flow rate adjustment part provided in the pilot air flow passage.

公开(公告)号：US11835068B2

公开(公告)日：2023-12-05

申请号：US17325724

申请日：2021-05-20

申请人： Festo SE & Co. KG

发明人： Stephan Paech

IPC分类号： F15B11/10 ,  F15B11/00 ,  F15B11/036 ,  F15B13/08 ,  G06N20/00

CPC分类号： F15B11/10 ,  F15B11/006 ,  F15B11/036 ,  F15B13/085 ,  F15B13/0832 ,  F15B2211/30575 ,  F15B2211/526 ,  F15B2211/8855 ,  G06N20/00

摘要： A compressed air provision device (2) for aerating a first pressure chamber (10) of a pneumatic actuator in order to actuate an actuator element (11) of the pneumatic actuator (3) in accordance with an actuation specification, in particular a position, movement, pressure and/or force specification. The compressed air provision device (2) is configured to calculate an aeration period (bd) and to aerate the first pressure chamber (10) in accordance with the calculated aeration period (bd) in order to bring about actuation of the actuator element (11) in accordance with the actuation specification.

公开(公告)号：US20190120263A1

公开(公告)日：2019-04-25

申请号：US15793315

申请日：2017-10-25

申请人： Dresser LLC

发明人： Jonathan Fredric Cohen ,  Jagdish Gattu ,  Lei Lu ,  Anatoly Podpaly ,  Harold Randall Smart ,  Paul Talmage Tirrell

IPC分类号： F15B15/20 ,  F16K31/04 ,  F16K15/14 ,  F16K47/04 ,  G01D11/24 ,  G05D7/00 ,  F15B13/08

CPC分类号： F15B15/202 ,  F15B5/006 ,  F15B13/0882 ,  F15B20/00 ,  F15B21/085 ,  F15B2211/6336 ,  F15B2211/6346 ,  F15B2211/6656 ,  F15B2211/8616 ,  F15B2211/8855 ,  F16K15/148 ,  F16K31/046 ,  F16K47/04 ,  G01D11/24 ,  G05B2219/45006 ,  G05D7/005

摘要： A controller for a valve assembly that is configured to meet requirements for use in hazardous areas. These configurations may regulate flow of instrument air to a pneumatic actuator to operate a valve. The controller may comprise enclosures, including a first enclosure and a second enclosure, each having a peripheral wall forming an interior space, and circuitry comprising a barrier circuit disposed in the interior space of one of the enclosures that power limits digital signals that exits that enclosure. In one example, the peripheral wall of enclosures are configured to allow instrument air into the interior space of the first enclosure but to prevent instrument air from the interior space of the second enclosure.

公开(公告)号：US20190093682A1

公开(公告)日：2019-03-28

申请号：US15718960

申请日：2017-09-28

申请人： Fisher Controls International LLC

发明人： Michael R. Fontaine ,  David L. Smid

IPC分类号： F15B15/20 ,  F15B15/14

CPC分类号： F15B15/20 ,  F15B15/14 ,  F15B21/087 ,  F15B2211/6313 ,  F15B2211/6336 ,  F15B2211/665 ,  F15B2211/6653 ,  F15B2211/6656 ,  F15B2211/7053 ,  F15B2211/8855 ,  G05B19/44

摘要： Systems and methods may be provided to digitally control both position and crossover pressure in a double-acting pneumatic actuator, in view of constraints (e.g., a deadband range comprising a set point) set on the crossover pressure. Control may be achieved, via a control algorithm (e.g., a Multiple Input Multiple Output (MIMO) control algorithm) acting upon inputs of actuator position feedback and crossover pressure feedback (e.g., as indicated by pressure feedback of each respective pneumatic chamber). Further, the embodiments described herein may reduce the necessary frequency of control actions for adjusting crossover pressure, thus reducing wear on process components, and allowing for finer control of actuator position.

公开(公告)号：US20170343020A1

公开(公告)日：2017-11-30

申请号：US15535139

申请日：2015-08-06

申请人： Koganei Corporation

发明人： Keisuke Matsumoto

IPC分类号： F15B11/06 ,  F16K1/12 ,  F15B13/04 ,  F16K31/122 ,  F16K15/02

CPC分类号： F15B11/06 ,  F15B13/0426 ,  F15B21/12 ,  F15B2211/3138 ,  F15B2211/31529 ,  F15B2211/329 ,  F15B2211/8855 ,  F16K31/122

摘要： An intermittent air discharge apparatus has a main valve and a pilot valve, the main valve being switched between a discharge state and a discharge stop state. The pilot valve is switched between an air-supply state to supply air to a pilot chamber for air-discharge, and an air-supply stop state. When the pilot valve is switched to the air-supply state, an exhaust passage communicates with the pilot chamber for air-discharge. When the pilot valve is switched to the air-supply state, a supply or exhaust passage allows an air supply passage to communicate with the pilot chamber for air-discharge and a pilot chamber for stopping air-supply; when the pilot valve is switched to the air-supply stop state, communication with the air supply passage is blocked. A flow rate of air from the pilot chamber for air-discharge is set by the exhaust passage, and a flow rate of air from the pilot chamber for stopping air-supply is set by the supply or exhaust passage.

公开(公告)号：US20170261008A1

公开(公告)日：2017-09-14

申请号：US15310282

申请日：2015-07-06

申请人： YUGEN KAISHA HAMA INTERNATIONAL

发明人： Tomio HAMA

IPC分类号： F15B11/10 ,  F15B13/02 ,  F16K15/18 ,  F15B15/24

CPC分类号： F15B11/10 ,  F15B11/0406 ,  F15B11/0413 ,  F15B11/048 ,  F15B11/06 ,  F15B13/027 ,  F15B13/042 ,  F15B15/22 ,  F15B15/24 ,  F15B2211/40515 ,  F15B2211/40584 ,  F15B2211/75 ,  F15B2211/8855 ,  F16K15/18 ,  F16K31/1221 ,  F16K31/1223 ,  Y10T137/86968 ,  Y10T137/87418

摘要： A speed controller capable of controlling an action speed of an external cylinder in one stroke in a step-wise manner. The speed controller includes a first flow path and a second flow path that allow a first port and a second port to be in communication with each other. The first flow path is provided with a first check valve for allowing flow from the first port to the second port. The second flow path is provided with a first needle valve, and an opening hole of the first check valve is constituted as a part of a flow path. The first needle valve adjusts the flow rate by changing an opening area of the opening hole with a tip portion fixed on a piston in the cylinder chamber. The speed controller further includes a third flow path allowing the first port and the cylinder chamber to be in communication with each other. The third flow path is provided with a second check valve for allowing flow from the first port to the cylinder chamber.

公开(公告)号：US09732878B2

公开(公告)日：2017-08-15

申请号：US14992274

申请日：2016-01-11

申请人： Hassan Abdullah Ahmad Alkandari

发明人： Hassan Abdullah Ahmad Alkandari

IPC分类号： G01L27/00 ,  G01M3/02 ,  F16K37/00

CPC分类号： F16K37/00 ,  F15B1/00 ,  F15B19/00 ,  F15B2211/30565 ,  F15B2211/31558 ,  F15B2211/31576 ,  F15B2211/327 ,  F15B2211/6336 ,  F15B2211/7052 ,  F15B2211/855 ,  F15B2211/8855 ,  F16K37/0083

摘要： An emergency shut-off valve and means for initiating a test on said emergency shut-off valve includes a source of pressurized gas, a main solenoid responsive to a signal from said means for initiating a test and a source of pressurized gas are included. Further, means including a main solenoid responsive to a signal from said means for initiating a test and a main solenoid valve and a quick exhaust valve connected to the source of pressurized gas. Further, a pneumatic actuator for opening and closing the shut-off valve and test means for testing the emergency shut-off valve without fully closing the emergency shut-off valve in response to a signal from the means for initiating a test. The test means includes a second solenoid.