CBL Series Marine Explosion-proof Centrifugal Fans

1. Overview

The CBL series marine explosion-proof centrifugal fan (hereinafter referred to as the explosion-proof fan) is designed and manufactured in accordance with GB 1799-2008 Marine Explosion-proof Centrifugal Fans, the general requirements of GB 3836.1-2000 Electrical Apparatus for Explosive Atmospheres, GB 3836.2-2000 Electrical Apparatus for Explosive Atmospheres – Flameproof Enclosure “d”, and the relevant provisions of the current Rules for the Classification and Construction of Sea-going Steel Ships of the Register of Shipping of the PRC.

This series has been tested and approved by the explosion-proof inspection authority of the PRC and has been granted an explosion-proof certificate. It has also been tested and approved by the Register of Shipping of the PRC and has been granted a product marine certificate.

2. Features

Explosion-proof, safe and reliable in operation, small dimensions, light weight, low noise, good corrosion resistance, and strong resistance to rolling, vibration and shock.

3. Structure

The CBL explosion-proof fan is built in two designs, type I (direct-coupled) and type II (bulkhead-mounted); both have a spark-free structure.

Type I (direct-coupled) is a direct-drive design in which the impeller is mounted directly on the shaft of the explosion-proof motor and the casing is fixed to the motor flange.

Type II (bulkhead-mounted) has the fan and motor in separate compartments and consists of the fan, transmission assembly, flexible coupling and motor. The transmission assembly comprises the bearing housing, bearings, shaft, copper ring and sealing gland, and allows temperature measurement and oil replenishment. One end is coupled directly to the explosion-proof fan, the other to the bulkhead.

The CBL explosion-proof fan is of the horizontal, single-stage, single-inlet, airtight type; a vertical design is also available.