摘要:
Die Erfindung betrifft ein Ventilsystem oder eine Ventilanordnung (10) zur Betätigung des Kolbens (17) einer Kolben-Zylinderanordnung (15) für eine hydraulische oder fluidische Vorrichtung, beispielsweise für die Betätigung der Kolben-Zylinderanordnung (15) zur Betätigung des beweglichen Kontaktstückes (50) eines Hochspannungsleistungsschalters (51), mit einem 3/2-Wegeventil (13), das in einer ersten Stellung den Weg für das unter Hochdruck stehende Fluid dem Raum oberhalb des Kolbens (17) zusteuert und in einer zweiten Stellung diesen Raum mit einem Niederdrucktank (28) zur Entlastung des Raumes oberhalb des Kolbens (17) verbindet. Das 3/2-Wegeventil (13) dient als Vorsteuerventil für eine zwei als 2/2-Wegeventile ausgebildete Hauptventile (11,12) aufweisende Hauptventilanordnung, wobei das Vorsteuerventil (13) das erste der Hauptventile (10) zur Zusteuerung des Fluids auf Hochdruck zur Kolben-Zylinderanordnung (15) in Öffnungsstellung verbringt, wobei das zweite Hauptventil (12), welches eine Verbindung von der Kolben-Zylinderanordnung (15) zu einem Niederdrucktank (28) freigibt, geschlossen ist, und das zweite Hauptventil (12) zum Öffnen ansteuert und das erste (11) in Schließstellung verbringt.
摘要:
The invention relates to a device for controlling flowing media, notably suction air, in conjunction with suction heads or such like. According to the invention closing elements made of an elastically deformable material, notably diaphragms (17, 18), are positioned in a valve housing (10) and via actuating lines (14, 15) are subjected (exclusively) to compressed air so as to move same into a closed or blocked position. When the diaphragm (17, 18) is moved into an open position a vacuum is generated on the side opposite the closing side.
摘要:
A method and system are provided for controlling a pressurized fluid such as nitrogen gas which may be initially stored at a pressure as high as 20,000 psi. A valve assembly is utilized in the method and system and includes an electric proportioning device such as a pneumatic servovalve (14) and a pair of pneumatic, fluidly-coupled valves (16 and 18) which are piloted by the servovalve (14) to regulate the pressure of the pressurized nitrogen gas. In the method and system, the servovalve (14) operates in a closed loop fashion by utilizing feedback from a feedback device such as a pressure transducer (40). A controller (46) in the closed loop is responsive to a pressure signal from the pressure transducer (40) and a preset reference signal to provide an error control signal to the servovalve (14).
摘要:
This invention relates to a poppet valve device which switches and operates sequentially a plurality of poppet valves by the change-over operation of a pilot valve by an electromagnetic solenoid, for example, operating upon receiving an external input signal. This poppet valve device includes first and second poppet valves (A, B) each constructed in such a manner that a poppet to permit communicating or cutting off of an inlet port (30) with or from an outlet port (31) is moved in a direction of the communicating position by a pressure on the inlet port side acting on its pressure receiving portion (32a) and in a direction of the cut-off position by the pressure acting on its back pressure chamber (38a, 38b), and a pilot valve (C) which connects the back pressure chamber of each poppet valve to a tank (2) and has a variable throttle portion controlled by an external input signal in such a manner as to make the pressures of the respective back pressure chambers different from each other when the poppet of each poppet valve is moved to the position for allowing each inlet port to communicate with each outlet port.
摘要:
The disclosure is directed to a seat valve arrangement (C4) for controlling a hydraulic oil flow to e.g. a linear or rotary hydraulic motor. The valve could be connected to a pump which acts as a pressure medium source. The arrangement of the present invention includes at least one seat valve (C4) located in a main flow connection, e.g. between the pump and the motor. Each seat valve (C4) would adjust the flow in the main flow connection via a pilot flow adjustable by a pilot valve (E4). The pilot flow originates from the main flow through the seat valve (C4).