Table 1 Main geometric parameters of the marine pump.

From: Noise spectrum characteristics of marine pump units induced by different excitation sources

Components

Geometric parameters

Symbol

Value

Impeller

Inlet diameter

D1

65 mm

Outlet diameter

D2

165 mm

Outlet width

b2

7 mm

Blade wrap angle

φ

110°

Blade numbers

z

6

Volute

Inlet diameter

D3

170 mm

Inlet width

B3

20 mm

Outlet diameter

Dd

50 mm