DINKONDA GLOBAL Power Plants Special 2-671t/h Steam Boiler Ventilation And Induced Draft Fan System, G4-73 Series D-type Drive Boiler Centrifugal Fan

Product Overview
The G4-73 boiler centrifugal fan is a high flow medium pressure centrifugal fan widely used in thermal power plants, thermal power projects, and industrial heating boiler systems. It is mainly used as a boiler supply fan and can also be matched with dust removal and desulfurization systems as ventilation equipment. This fan adopts a D-type coupling transmission, suitable for large and medium-sized coal-fired and biomass boilers, and can transport clean air or low concentration dust flue gas. It can meet the long-term uninterrupted continuous operation of the equipment and is an important auxiliary equipment of the boiler system. The aerodynamic performance of the fan has been optimized, with a wide operating range and adaptability to the variable load conditions of the boiler.

Structural Composition
1. Spiral shell casing: High quality steel plate welded spiral shell structure with high rigidity. The top of the casing is equipped with lifting ears for easy equipment lifting and maintenance; The integral steel welded base ensures the coaxiality of the fan and motor, suppresses operational vibration, and the casing can be equipped with maintenance ports as needed

2. Impeller components: Rear tilting airfoil blades with high dynamic balance accuracy level. The impeller can be treated with wear-resistant coating to resist airflow erosion, reduce dust wear, and adapt to complex working conditions of boiler systems.

3. Collector air inlet: convergent conical air inlet, flange connection structure, low airflow resistance, uniform air intake, convenient for direct connection with pipelines and compensators.

4. D-type transmission assembly: coupling direct transmission, independent bearing box, oil bath lubrication, excellent bearing heat dissipation conditions, supports long-term continuous operation, can be configured with temperature and vibration measurement interfaces for online status monitoring; The coupling protective cover is used for safety protection.

5. Drive motor: Three phase asynchronous industrial motor with high protection level, suitable for power plants and boiler rooms, supports variable frequency speed regulation, and achieves air volume and pressure adjustment.

6. Supporting accessories: can be equipped with adjustable air doors, mufflers, expansion joints, and shock absorbers; The fan can be customized for left and right rotation, with multiple outlet angles to meet the requirements of on-site pipeline layout.

Product Features
1. High aerodynamic efficiency: The wing shaped blade aerodynamic design allows the fan to operate efficiently over a wide range, maintaining high efficiency even under variable load conditions of the boiler, reducing equipment power consumption, and achieving outstanding energy-saving effects.

2. Stable operation and long lifespan: The impeller undergoes strict dynamic balance verification, the entire machine has a rigid base, low vibration amplitude, and low noise, making it suitable for 24-hour uninterrupted long-term operation in power plants.

3. Strong adaptability to working conditions: mainly conveying boiler combustion air, and can also handle low dust flue gas; The D-type transmission structure has strong load-bearing capacity and can maintain operational stability even for large models.

4. Easy maintenance operation: The lubrication points of the bearing box are clear, and daily maintenance is simple; Easy disassembly and assembly of the casing, convenient for cleaning and maintenance of the impeller; Support variable frequency regulation or air door throttling to adjust air volume.

5. Strong customization ability: The angle of the air outlet, wear-resistant treatment of the impeller, and rotation direction can all be customized according to the actual working conditions of the project, suitable for different tonnage boiler systems.

Technical Parameters
Model: G4-73
Transmission mode: D-type coupling transmission
Transport medium: air, low-temperature and low dust flue gas
Medium temperature: ≤ 80 ℃ (air supply condition)
Airflow range: 12000-2220000 m ³/h
Full pressure range: 1400-4800 Pa
Lubrication method: Bearing box oil bath lubrication
Rotation direction: Right/Left customizable
Air outlet angle: customized according to various specifications and angles as needed
Usage positioning: boiler supply fan, dust removal system ventilation fan