Automatic control device of boiler reserved water pump

The utility model relates to an automatic control device of a boiler reserved water pump, which comprises a boiler water level control instrument and an automatic control device of the reserved water pump, wherein the automatic control device is provided with a high water level alarm contact, a low...

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Bibliographische Detailangaben
Hauptverfasser:	ZHENG ZUTAI, LI YAZHI, TENG NINGJIE
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING HEATING LIGHTING MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS WEAPONS
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Beschreibung
Zusammenfassung:	The utility model relates to an automatic control device of a boiler reserved water pump, which comprises a boiler water level control instrument and an automatic control device of the reserved water pump, wherein the automatic control device is provided with a high water level alarm contact, a low water level alarm contact and a dangerous low water level alarm contact. The automatic control device of the boiler reserved water pump comprises a high water level relay, a low water level relay and a switch contactor of the reserved water pump. The high water level relay triggered by the high water level alarm contact is a normally-closed relay, and a coil of the high water level relay is connected with a power supply through the high water level alarm contact. The low water level relay triggered by the low water level alarm contact is a normally-open relay, and a coil of the low water level relay is connected with the power supply through the low water level alarm contact. A coil of the switch contactor of the r