High and low voltage automatic conversion measuring device

The utility model provides a high and low pressure automatic switching measuring device, which comprises a body, a piston, a plug, a spring, a first pressure gauge and a second pressure gauge, a switching cavity, a low pressure measuring channel and a high pressure measuring channel are arranged in...

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Bibliographische Detailangaben
Hauptverfasser:	NIE WUSHI, YAN HUANAN, SU MINGSHENG, SI XIULING, LI GANG, WANG BIN, LI KECHENG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACTUATING-FLOATS BLASTING CLEANING CLEANING IN GENERAL COCKS DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MEANS FOR DAMPING VIBRATION MECHANICAL ENGINEERING PERFORMING OPERATIONS PREVENTION OF FOULING IN GENERAL SHOCK-ABSORBERS SPRINGS TAPS THERMAL INSULATION IN GENERAL TRANSPORTING VALVES WEAPONS
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Beschreibung
Zusammenfassung:	The utility model provides a high and low pressure automatic switching measuring device, which comprises a body, a piston, a plug, a spring, a first pressure gauge and a second pressure gauge, a switching cavity, a low pressure measuring channel and a high pressure measuring channel are arranged in the body, the bottom of the switching cavity is communicated with a measured pipeline through the pressure channel, and inlets of the low pressure measuring channel and the high pressure measuring channel are staggered; a reversing channel communicated with the pressure channel is arranged in the piston and provided with a high reversing outlet and a low reversing outlet. When the pressure of the measured pipeline is smaller than a set value, the low reversing outlet is communicated with the low-pressure measuring channel, and the high reversing outlet and the high-pressure measuring channel are staggered; when the pressure of the measured pipeline is larger than or equal to a set value, the low reversing outlet an