CBZ Series Marine Explosion-proof Axial Flow Fans

1. Overview

The CBZ series marine explosion-proof axial flow fan (hereinafter referred to as the explosion-proof fan) is designed and manufactured in accordance with GB 1800-2008 Marine Explosion-proof Axial Flow Fans, 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.

2. Features

Explosion-proof, safe and reliable in operation, good corrosion resistance, and strong resistance to rolling, vibration and shock.

3. Structure

The CBZ explosion-proof fan is available in five designs: type I (deck-mounted), type II (duct-mounted), type III (bulkhead-mounted), type IV (olive type) and type V (top-discharge). All have a spark-free structure.

In type I the explosion-proof motor is mounted on top of the frame, which is surrounded by a 2 mesh/inch stainless steel screen. The unit is installed vertically on deck and can be used for extract or supply.

Type II has no vent head; the corrosion-resistant motor is built in and secured to the casing by stationary-blade struts. It can be installed vertically or horizontally, including on deck, and can be used for extract or supply.

Types III, IV and V can be supplied to meet special customer requirements.

Type III (bulkhead-mounted) has the fan and motor in separate compartments, with a transmission, sealing gland and flexible coupling between them; it is mainly used to extract gas from hazardous compartments.

In types IV (olive) and V (top-discharge) the airflow does not pass through the motor, which ensures safety.

The CBZ explosion-proof fan is built so that, viewed from the explosion-proof motor end, the impeller rotates clockwise. Reverse rotation is permitted in service.

4. Model Designation

5. CBZ Fan Engineering Drawing

6. CBZ Fan Overall and Installation Dimensions

7. CBZ Fan Performance Parameters

8. CBZ Fan Characteristic Curves

380v 50Hz

440v 60Hz