摘要:
A control system (1) comprises a pressure controller (2) with adjusting screw (24) to control the pressure inside a conduit used to transport explosive gas; an adapter (3) with a hole (31) adapted to receive the head (25) of the adjusting screw; a motor (4) adapted to be used in risk explosion areas, provided with a driving shaft (40) connected to the adapter (3); a support (5) with body (50) comprising a first end (51) wherein a first hole (53) is obtained to receive a shank (22) of the pressure controller and a second end (52) wherein a second hole (54) is obtained to receive the adapter (3).
摘要:
Fluid regulator systems having reset apparatus and methods are described herein. An example reset apparatus for use with a fluid regulator system includes a first valve having an inlet to receive a loading fluid and an outlet in fluid communication with a loading chamber of a fluid regulator, and a second valve having an inlet in fluid communication with the loading chamber of the fluid regulator and an outlet in fluid communication with a vent.
摘要:
Tiertränken verfügen über Druckminderer (15) zur Reduzierung des höheren Drucks der Flüssigkeitsversorgung auf einen geringen Flüssigkeitsdruck zur Versorgung der Tiertränken. Aus verschiedenen Gründen ist es erwünscht, den reduzierten Druck zu verändern. Das geschieht durch Verstellung der Druckminderer (15). Es ist bekannt, eine solche Verstellung mit Druckluft vorzunehmen. Das erfordert eine separate Druckluftquelle und ein entsprechendes Leitungssystem. Die Erfindung sieht es vor, die Druckminderer (15) hydraulisch durch den höheren Druck der Flüssigkeit der Flüssigkeitsversorgung zu verstellen. Die zur Verstellung der Druckminderer (15) erforderliche Energie liefert dadurch den Flüssigkeitsdruck der Flüssigkeitsversorgung. Dadurch arbeiten die erfindungsgemäßen Druckminderer (15) autark. Es ist keine separate Energiequelle zur Verstellung der Druckminderer (15) erforderlich.
摘要:
Fluid regulator systems having reset apparatus and methods are de¬ scribed herein. An example reset apparatus (700) for use with a fluid regulator system includes a first valve (706) having an inlet (710) to receive a loading fluid and an outlet (716) in fluid communication with a loading chamber (718) of a fluid regulator, and a second valve (708) having an inlet (744) in fluid communication with the loading chamber (718) of the fluid regulator and an outlet (748) in fluid communication with a vent.
摘要:
The invention relates to a valve (21) for a fluid or gaseous medium, with a displaceable valve body (8), by means of which the clear flow cross-section is adjustable. The valve (21), viewed in the direction of flow, comprises a pressure sensor (1) up- or down-stream of the valve body (8), to record the pressure of the medium and the valve body (8) is controlled depending on a signal from the pressure sensor (1) and/or an external controller (2).
摘要:
A proportional pressure control valve is disclosed which may be used for uni-directional or bi-directional fluid flow. An electromagnetic driver (35, 251, 360) mounted in a driver cavity (36, 353) of a housing produces a magnetic flux path in response to a variable input current. The magnitude of the flux path is substantially proportional to the input current. The flux path passes through an armature (40, 276) which is movable within the driver cavity. The armature is connected to a metering spool (64, 209, 260) so that the two move in unison. The metering spool is movable within a main bore between a sealing position and an infinite number of open positions. The position of the metering spool determines the magnitude of fluid communication between pressure ports. A feedback section (85, 98) of the housing establishes a pressure feedback force which impacts on the position of the metering spool and the armature. The valve may also include a spring (272) for biasing the metering spool to a fail-safe position within the housing. The proportional pressure control valve can be incorporated into a damper of a vehicle suspension system where the input current is governed by an electronic control unit (56) of the vehicle. The electronic control unit (56) may be responsive, in part, to the position of the suspension system through the use of a position feedback sensor (101).
摘要:
A valve apparatus for mixing fluids comprising a plurality of digital valves. Each valve has an actuator for adjusting the pressure and/or rate of flow of fluid from a cylinder storing fluid, a mixer for mixing the flow of fluid from each valve to produce an output flow, a fluid analysis unit arranged to monitor the composition of the output flow, and a controller arranged to provide a target mixture concentration for the output flow. The controller transmits target data to the fluid analysis unit, the fluid analysis unit receives the target data, to determine any error in the monitored composition, and sends a correction signal to one or more of the valves for adjusting the flow. Each of the valves is able to receive a correction signal and to adjust the flow using the actuator.
摘要:
A safety valve control system may include a remotely operable control assembly, a first transducer, a valve assembly, and a compressor assembly in communication with the control assembly. The control assembly is operable to actuate the pump and valve assemblies to supply fluid to actuate the safety valve into open and closed positions, in response to one or more signals received from the first transducer. A method of operation may include maintaining the safety valve in an open or closed position while sensing a physical property with the control system; communicating a signal corresponding to the sensed physical property to the control system; and automatically closing or opening the safety valve in response to a comparison of the sensed physical property to a pre-set condition.
摘要:
Disclosed are apparatus and methodology for remotely shutting off gas flow at a consumer location. A gas pressure regulator is configured to respond to communication signals from a central facility via a communications infrastructure to override normal pressure regulation functions such that the gas pressure regulator outlet pressure is reduced to zero.