Small flow positive pulse generator

The invention discloses a small flow positive pulse generator. The positive pulse generator includes a body, a ball valve and a pulse valve; two axial direction channels are disposed in the body, andthe two axial direction channels are respectively a first axial direction channel and a second axial...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ZHANG KAI, MA ZHENFU, TANG GAOFENG, LIU JINWEI, WANG HONGWAN, WANG ZENGLIN, LI YONGKANG, DAI QUN, CUI YUHAI, SUN JINFENG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS
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