Theoretical Model for the Performance of Liquid Ring Pump Based on the Actual Operating Cycle

Table 2

Parameters of liquid ring vacuum pump.

Category	Parameter	Unit	2BE1103	2BE1253	2BE1353
Casing	Radius	m	0.1365	0.3145	0.407
Impeller	Rotational speed	r/min	1170, 1300, 1450	590, 740, 920	372, 490, 590
	Axial width	m	0.215	0.5	0.708
	Angle of blade	Degree	40	42	45
	Impeller radius	m	0.105	0.25	0.36
	Hub radius	m	0.0535	0.125	0.177
	Eccentricity	m	0.0136	0.0316	0.04
	Blade thickness	m	0.008	0.01	0.012
	Blade number		12	15	18