Online detection device for volumetric efficiency of constant-voltage variable displacement pump

• Main Authors: SONG BINGJUN, ZHANG ZHIYONG, ZHAO LUNFENG, SUN KE, DONG XIRONG
• Format: Patent
• Language: Chinese; English
• Published: 11.04.2012
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The utility model provides an online detection device for volumetric efficiency of a constant-voltage variable displacement pump. In the online detection device, a pinion pasted with an indicating scale is arranged on a constant-voltage variable displacement pump shell through a hinge pin, and a marking disc is pasted on a shell behind the pinion; and a gearwheel pasted with a pointer is arranged on an inner piston of the constant-voltage variable displacement pump through a mandrel, a dial is pasted on a shell at the front end of the pointer, and the gearwheel is in meshed transmission with the pinion through gear teeth. When a swash plate of the constant-voltage variable displacement pump slopes, the inner piston drives the gearwheel and is meshed with the pinion to rotate, the indicating scale and the pointer on the pinion and the gearwheel deflect, angles displayed on the dial of the gearwheel can be amplified on the marking disc directly through the pinion, thereby deciding whether the pump meets the pro