摘要:
본 발명은 스풀의 직선 운동에 따라 밸브몸체의 내부를 통과하는 유체의 흐름을 단속하는 압전 서보 밸브에 관한 것으로, 더욱 상세하게는 압전소자에 의해 변위를 발생시키는 압전액추에이터와, 상기 압전액추에이터에서 발생한 변위를 스풀의 양단으로 확대 전달하는 변위확대전달레버를 통해 스풀을 직선 운동시켜 유체의 통과 흐름을 확실하게 단속할 수 있는 압전 서보 밸브에 관한 것이다. 이러한 본 발명은, 유체가 통과하는 유입유로와 배출유로가 구비된 밸브몸체; 상기 유입유로와 배출유로의 사이 공간에서 직선 운동 가능하게 설치되어 위치에 따라 상기 유체의 통과 흐름을 단속하는 스풀; 상기 밸브몸체의 일측에 구비되고 외부에서 인가되는 전원에 따라 압전 운동하는 압전소자로 이루어져 변위를 발생시키는 압전액추에이터; 및 상기 압전액추에이터와 상기 스풀의 사이에 설치되어 상기 압전액추에이터에서 발생하는 변위를 확대시켜 상기 스풀로 전달하여 상기 스풀을 직선 운동시키는 변위확대전달레버;로 구성되는 것을 특징으로 하는 압전 서보 밸브를 기술적 요지로 한다.
摘要:
Die Erfindung betrifft eine Fluidstromregelvorrichtung (2), insbesondere Gasstromregelventil, die folgendes aufweist: einen Körper (26) mit einem Einlass (23), einem Auslass (24) und einem dazwischen liegenden Kanal (5), durch den ein Fluidstrom leitbar ist, eine Ventileinheit (8), umfassend einen Regelkörper (3), einen Ventilsitzring (25), der mit dem Körper (26) gekoppelt ist und einen Durchgang definiert, der einen Teilabschnitt des Kanals (5) bildet, wobei der Regelkörper (3) in den Durchgang eingreift und zur Regelung des Fluidstroms in dem Durchgang entlang einer Achse (6) zwischen einer Offenstellung und einer Schließstellung bewegbar ist. Es wird vorgeschlagen, das Dichtungssystem derart zu ändern, dass es einfacher zu montieren ist und einen beschädigungsfreien Betrieb gewährleistet. Dazu wird ein Dichtungssystem vorgeschlagen, das dadurch gekennzeichnet ist, dass die Ventileinheit (8) zumindest zweiteilig ausgeführt ist, wobei ein Dichtelement (17) zwischen den Teilen (3, 18, 25) der Ventileinheit (8) angeordnet ist und der Ventilsitzring (25) eine Abdichtfläche (12) aufweist, wobei das Dichtelement (17) derart angeordnet ist, dass dieses gegen die im Wesentlichen senkrecht zur Achse (6) angeordneten Abdichtfläche (12) bewegbar ist.
摘要:
The present invention relates broadly to an evacuation coupling (10) for connection to a fluid vessel for evacuation of fluid from the vessel. The evacuation coupling (10) comprises a coupling body (14) including an elongate fluid passageway (18) having a fluid inlet (20) and a fluid outlet (22) at its respective opposite ends. The evacuation coupling (10) also comprises an isolation valve (24) mounted within the fluid passageway (18) and designed to control the flow of fluid. The evacuation coupling further comprises a valve actuator (26) operatively coupled to the isolation valve (24) to effect its opening and closure. The evacuation coupling (10) additionally comprises coupling means in the form of a ball locking mechanism (28) designed to releasably couple with the vessel via the receiver (12). The evacuation coupling (10) also comprises a coupling actuator (30) mounted to the coupling body (14) and arranged to co-operate with: 1. the ball lock mechanism (28) to permit its coupling and uncoupling from the fluid vessel; 2. the valve actuator (26) to either i) restrict movement of the coupling actuator (30) with the isolation valve (24) opened and the ball lock mechanism (28) coupled to the vessel to prevent uncoupling of the evacuation coupling (10) from the vessel, or ii) permit coupling of the evacuation coupling (10) to the vessel with the isolation valve closed.
摘要:
A method for filling and venting a device for extracorporeal blood treatment is disclosed, such as a patient module in a heart-lung machine, without attached patient. A filling liquid from a filling liquid container located higher than the device flows by gravity via a venous side of the system into a reservoir and flows onwards into a blood pump located at the lower end of the reservoir, wherein a first controllable valve (HC1) for a venting line of a filter is opened and, after the response of an upper filling level sensor in the reservoir, is closed. An upper level of the filter is positioned higher than the upper filling level sensor, and a start-stop motion of the blood pump is performed, as a result of which a stepped flooding of the filter is made providing for an advantageous de-airing of the device.
摘要:
The valve actuator (1) includes a housing (2), a motor (4) coupled to the valve, wherein rotation of the motor (4) changes the position of the valve from a first position in which fluid flow may occur along at least one path and a second position in which fluid flow is either blocked or may occur along at least one second path, said motor (4) being normally supplied with electrical power from a main source of electrical power, at least one sensor (24,132) configured to detect the position of the valve and/or the valve speed, a switch (16) controlling the delivery of electrical power to the motor (4), and a power circuitry (19) connected to the switch (16). The valve actuator further includes a controller (20) connected to the at least one sensor (24,132) and to the power circuitry (19), said controller (20) collecting in real time data relative to the position and/or the speed of the valve and data relative to the power setting, calculating the position and/or speed correction in pro rata to errors between the collected data relative to the position and/or the speed of the valve and collected data relative to the power setting, and sending a new power setting to the power circuitry (19), wherein the power circuitry (19) amplifies the controller signal.
摘要:
Ein Steuerventil (3) zum Öffnen und Schließen eines Fluidkanals (16; 30) weist einen Schließkörper (25) auf, der durch einen Aktor (23) mit einer Kraft beaufschlagt werden kann und der sich durch diese Kraft so verformt, dass eine Dichtfläche (28) zumindest mittelbar durch den Steuerkörper (25) bewegt wird und dabei die Öffnung des Fluidkanals (16; 30) öffnet und schließt. Dabei ist der Steuerkörper (25) aus einem auxetischen Material gefertigt und weist bezüglich der Kraftrichtung eine negative Querkontraktionszahl auf.
摘要:
In some aspects, an actuation system includes an electrical positioning driver and an electrically-driven actuator. A voltage boost converter in the electrical positioning driver receives an input voltage. The voltage boost converter passes the input voltage to a voltage bus in the electrical positioning driver. The voltage on the voltage bus is converted to an actuator power signal that controls the electrically-driven actuator. The voltage boost converter boosts the voltage on the voltage bus to control a mechanical output performance of the electrically-driven actuator.
摘要:
A configurable process control device (10), which includes a field device(12), such as a valve position controller, that can be configured by a user to emulate any one of a plurality of different types of process control devices, is provided with an electronic display assembly (16). The electronic display assembly is operatively connected with a control circuit (18) that is arranged to respond to the specific configuration of the field device to cause the electronic display assembly to display information relevant to the specific type of control device the field device has been configured to emulate. The information may include safety certification information specific to each of the different types of process control devices that the field device can be configured to emulate.
摘要:
Process chamber gas flow control apparatus having a tiltable valve are disclosed. The gas flow apparatus includes a process chamber adapted to contain a substrate, an exit from the process chamber including a valve seat, and a tiltable valve configured and adapted to tilt relative to the valve seat to control flow non-uniformities within the process chamber. Systems and methods including the tiltable valve apparatus are disclosed, as are numerous other aspects.