Frequency Converter Application by Xianrun Blower

Frequency Converter Application by Xianrun Blower

Nearly 20 years, due to urgent need of energy saving and requirements of product quality constantly improvement, people take full advantage the easy operation, free maintenance, high control precision, and functional characteristics of fan frequency converter, so the fan frequency converter gradually replace the adjusting door, baffle and valve. 

Custom Heavy Duty Industry Fans for Power Plant

Especially in cement production, iron and steel smelting process, mining ventilation, coal power plant and other industries, many frequency converter manufacturers even install the fan frequency converter to industrial fans and blowers for free, share out bonus according to energy saving degrees, to promote the fan frequency converter application vigorously.

High Capacity Double Suction Fans for Power Plant

The fan frequency converter can solve the various problems effectively in industrial production. It is the industrial automation difficulties that restrict the productivity development, the frequency converter are applied in large industrial fans and blowers industry initially, with the development, many research fellows and business customers begin to develop and accept the frequency converter,so as to popularize to the whole automation industry and drive the automation process.

High Temperature Fans for Dust Collecting

Frequency Converter Application in Industrial Fans And Blowers by Xianrun Blower

Frequency Converter Application in Industrial Fans And Blowers by Xianrun Blower

Frequency converter is variable speed equipment of industrial production equipment for the three-phase ac motor, such as various fan equipment of product processing and manufacturing industry, ID fan, FD fan for boiler combustion system, cooling fans on the drying system, ventilation fan or exhaust fan for ventilation system, etc.

High Temperature Industrial ID Fans for Boilers

The most energy saving and power consumption are main fans in coal power plant.
Fan frequency converter controls and adjust fans according to furnace pressure, wind speed, air volume, temperature, and etc., to meet the technological requirements and operation condition.

In the past without frequency converter, the industrial fans control the airflow by controlling the adjusting door and baffle, and centrifugal fan motors has been running at maximum power condition regardless of the production size demand. 

In this case, not only production precision is restricted, but also causing a lot of energy waste and equipment loss, and leading to the production cost increases, shortening equipment service life, high maintenance cost to motor and mechanical transmission, and other electrical equipment.

Wear Resistant ID Fan

Most industrial fans and blowers use asynchronous motor and direct drive operation, so will cause large starting current, mechanical shock, electric protection features and so on. All these will affect the equipment service life, and it can not snap action protect equipment when there is mechanical failure, even pump damage and motor burning out. 

For the high power motor, no matter directly start or star triangle start, will have varying degrees impact on power grid, so State Grid Corporation of China regulation is that the large current devices are not allowed direct start.

High Temperature Fans for Dust Collecting

Hydraulic Coupling Disadvantage for Industrial Fans And Blowers by Xianrun Blower

Hydraulic Coupling Disadvantage for Industrial Fans And Blowers by Xianrun Blower

(1) Hydraulic coupling always has slip ratio and power loss.The rated efficiency of torque-limiting hydraulic coupling is approximately equal to 0.96, the variable speed hydraulic coupler efficiency relative centrifugal fans is between 0.85 ~ 0.97;
(2) The output speed is always lower than the input speed, and the output rotational speed cannot be as accurate as gear transmission speed;

New Design FD Fans for Boilers

(3) The speed control type hydraulic coupler need additional cooling system, so increase the investment and operation cost;
(4) Large covering area, so it needs a certain space between motor and industrial fans and blowers;
(5) Narrow range of speed regulation;
(6) The ability of transmitted power is directly proportional to the square of the input speed. If the input speed is too low, the coupler specification will increase, and decrease cost performance.

High Capacity Single Suction Fans for Cement Plant

The Hydraulic Coupling Transformation for Power Plant Fans And Blowers by Xianrun Blower

The original base of ID fan does not change, just need to transform motor position properly, and fill motor foundation on the motor end. In this case, the transformation construction is small, and just invest in the hydraulic coupling and filling foundation part. 

High Temperature Fans for Dust Collecting

The Features of Industrial Fans and Blowers in Power Plant

Centrifugal Fan and Axial Flow Fan in Boilers of Steam Power Plant

xianrun industrial fans and blowers

Situation	Application	Fan Type	Medium	Features
Boilers of Steam Power Plant	ID Fan  (induced  draft fan)	Centrifugal fan, axial flow fan	Boiler smoke	When burning heavy oil, pay attention to the corrosion by sulfur composition in the exhausting; when burning coal, pay attention to the wear caused by dust. It needs to equip dust-extraction device in front of ID fan, and high efficiency motor.
	FD Fan  (forced  draft fan)	Centrifugal fan, axial flow fan	Air	As for the axial flow fan, utility-type unit can use adjustable blade axial flow fan. During the forced draft, because of high pressure, high nose, it is better to use silencer device.
	Coal dust exhausting	Centrifugal fan	Coal dust	According to the purpose, the coal dust exhausting fan can be divided into two kinds. One, pulverized coal storage bin type exhausting fan. It blows pulverized coal from side into furnace. The coal dust do not go through the fan, so the fan pressure needs to be much high.
	Coal dust exhausting	Centrifugal fan	Coal dust	The other is straight type dust blower. It sends the coal dust into furnace directly. Because of the impeller and casing wear, the fan needs to processed with wear-resistant treatment.
	Gas recirculating fan	Centrifugal fan	Boiler fume	This model fan exhausts high temperature boiler fume, so the material and structure should be heat resistant.
	Smoke extraction fan for desulphurization	Centrifugal fan	Boiler fume	This fan is installed in front of desulphurization equipment.
	Atomic energy furnaces  ventilation fan	Centrifugal fan, axial flow fan	Air	For the safety of atomic energy furnaces, the fan should have high quality and reliable.

wear-resistant treatment