Low-pressure critical flow venturi nozzle calibration device

The utility model discloses a low-pressure critical flow venturi nozzle calibration device, which comprises an inlet pipe section, an outlet pipe section, an outlet pipe section, an outlet pipe section, an outlet pipe section, an outlet pipe section, an outlet pipe section and an outlet pipe section...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: YUAN SHIHUI, SU JINYOU, LI CHUNHUI
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The utility model discloses a low-pressure critical flow venturi nozzle calibration device, which comprises an inlet pipe section, an outlet pipe section, an outlet pipe section, an outlet pipe section, an outlet pipe section, an outlet pipe section, an outlet pipe section and an outlet pipe section, wherein a plurality of channels are arranged between the outlet of the manifold and the inlet of the reverse manifold, a pneumatic valve and a standard sonic nozzle are arranged in each channel, and the standard sonic nozzles in the plurality of channels have different throat diameters; wherein the plurality of channels are connected to a sonic nozzle to be measured, and the outlet end of the sonic nozzle to be measured is a vacuum environment; the control part is used for measuring the temperature and the pressure of the standard sonic nozzle and the sonic nozzle to be measured; and the pneumatic valves in the plurality of channels are connected to the control part. According to the utility model, a set of low-p