Marine Explosion Proof Axial Flow Fan
Casing
Impeller
Motor
Introduction:
A marine explosion proof axial flow fan is a type of fan used in marine and offshore environments that require explosion-proof equipment to prevent the ignition of hazardous gases, vapors, or dust.
An axial flow fan is a type of fan that creates airflow by rotating a set of blades around a central shaft. These fans are designed to move large volumes of air at low pressures and are commonly used for ventilation and cooling applications.
The explosion-proof design of the fan ensures that it will not ignite any flammable or explosive materials that may be present in the surrounding environment. This is achieved through the use of materials and construction methods that prevent sparks or arcs from occurring, such as using non-sparking materials and ensuring all electrical connections are properly sealed.
Marine explosion-proof axial flow fans are used in a variety of applications, such as in cargo holds, engine rooms, and other areas of ships and offshore oil rigs. They are also used in other hazardous environments, such as chemical plants and refineries. These fans are an important safety feature in these environments, as they help to prevent the buildup of explosive gases or vapors that could lead to catastrophic accidents.
Structure:
There are five structural types: type Ⅰ(deck type), type Ⅱ(tube type), type Ⅲ(separate cabins type), type Ⅳ(olive type) and type Ⅴ(wind upward type). The construction is non-sparking.
TypeⅠexplosion-proof
fan has an explosion-proof motor installed on the top of the frame and a
wire mesh guard with 2 inch, made of stainless steel, surrounding the
frame. The fan is vertically fixed on the deck. It can be delivered for
air supply or air extraction.
Type
Ⅱ explosion-proof fan has no hood, built-in type anti-corrosive motor
id mounted on the casting by vane. It can be installed vertically or
horizontally, and also be installed on the deck. It can be delivered for
air supply or air extraction.
According
to the customer’s special requirement, the fan can be made into Ⅲ, Ⅳ,Ⅴ
type structure, the fan and the motor with a driving device, a stuffing
box and flexible coupling. It is used primarily for exhaust of dangerous
compartment, the ventilator fan can also be type Ⅳ and Ⅴ, in which the
air not pass the motor thus ensuring the vessel safety.
The
explosion-proof ventilator is manufactured in the structure under which
the impeller turns clockwise view from the motor side impeller can be
reversible.
Configuration selection:
Part name
Texture of material
Advantages / disadvantages
Casing
Carbon steel
After heat treatment, higher hardness and better wear resistance can be obtained. The hardness in the annealed state is very moderate, and it also has good machinability. Raw materials are very common, easy to obtain, and the production cost is relatively low
Impeller
Aluminium alloy
Low density, high strength, good conductivity, good corrosion resistance and easy processing
Electric machinery
Finished marine motor with low noise, low vibration and high protection grade
Junction box
Q235A
It has good plasticity and welding performance, good forming ability, and has a certain strength. It is suitable for engineering structures. It has good practical performance, relatively cheap price and high cost performance
Stationary blade support foot
Q235A
Ordinary carbon structural steel has simple production process, good process performance (such as welding performance, pressure processing performance, etc.), necessary toughness, good plasticity, low price and easy to supply in large quantities. It is usually used after hot rolling
Casing flange
Q235A
Good toughness and plasticity, certain elongation, good welding performance and hot workability
Drawing:
The specific differences are as follows:
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Product of other low-quality suppliers |
Product of our factory |
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Other low quality suppliers |
Consequence |
Our factory |
Result |
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Incorrect model selection and differences |
The air volume and pressure cannot meet the customer's requirements |
The air volume and pressure cannot meet the customer's requirements |
The air volume and pressure meet the requirements, and the operation is stable and safe |
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Use inferior materials and turn out substandard goods |
The casing is easy to rust |
Adopt marine standard carbon steel |
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Impeller not durable |
It is easy to be corroded by seawater in a short time, resulting in air holes in the impeller and reduced air volume |
Adopt Marine Standard 104 aluminum alloy |
More corrosion resistance and longer service life |
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Choose ordinary motor as marine motor |
The insulation grade cannot meet the requirements |
Strictly select marine motor |
The shell has higher protection grade, certain explosion-proof property, more moisture and corrosion resistance, and longer service life |
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The explosion-proof grade is not selected as required |
The motor fails to meet the explosion-proof requirements and is prone to danger |
Choose explosion-proof grade in strict accordance with application requirements |
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Our inventory:
IACS Certificate: DNVGL, LR, KR, ABS, NK, BV, CE, CCS
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