一、Overview of high temperature centrifugal fans
As a special fan, high temperature centrifugal fans play a vital role in many industrial fields. Its material has strong resistance to high temperature and high pressure, and can operate stably in extreme environments.
The high temperature centrifugal fan is composed of impeller, casing, air inlet, air outlet, motor and other parts. Generally, it is made of multi-wing single-feed centrifugal impeller and high-quality cold-rolled steel plate. The blade is designed according to the aerodynamic principle, with high material strength and good durability. After strict dynamic and static balance correction, the air performance is good, the work efficiency is high, and the operation is stable. The motor is a special high temperature motor, and the fluid part is made of temperature resistant material, and the cooling structure is reliable. Widely used in high temperature ovens, ovens, hot air circulation equipment and many other fields.
According to different transmission methods, the high temperature fan is divided into direct motor transmission (type A), belt transmission (type c) and coupling transmission (type D, type F). Type A machine number is small, can not meet the requirements of large air volume or high pressure, and the medium temperature can not be higher than 70℃; Type c can withstand the medium temperature of 250℃, the motor power should not be too large; Type D can withstand medium temperature 250-500 ℃, high stability; F-type is stable in operation, easy to maintain, and is often used in large air volume and high wind pressure.
Centrifugal high temperature fans can be subdivided into single-stage centrifugal fans, multistage centrifugal fans and forward-leaning centrifugal fans. The single-stage centrifugal fan has the advantages of simple structure and easy maintenance, and is suitable for small flow rate and medium-high static pressure head. The multi-stage centrifugal fan has high pressure ratio and large pressure head capacity, which is suitable for industrial fields requiring high pressure and high flow such as chemical industry and electric power industry. The forward-leaning centrifugal fan is suitable for the discharge treatment of acid, alkali and corrosive gases and high temperature gases, and is widely used in metallurgy, chemical industry and other industrial fields.
二、Structural characteristics and advantages
（一）Unique structural composition
Zhejiang Pengxiang HVAC Equipment Co., Ltd. produces a variety of high temperature centrifugal fans, there are Y5-51, Y5-55 series of boiler induced draft fans, there are 6-24 series, 6-48 series of high efficiency and energy saving boiler induced draft fans, etc. The fan adopts a single suction inlet, the blade adopts a backward tilt blade, which is designed according to the aerodynamic principle, after strict dynamic and static balance correction. Ensure smooth operation. The air inlet adopts the form of convergent streamlined vortex reduction, which can effectively reduce the air loss and improve the working efficiency of the high temperature centrifugal fan.
（二）High quality materials
The material selection of high temperature centrifugal fan is very particular. The whole is made of steel plate with high strength and good durability, which ensures the stability of the fan in high temperature and high pressure environment. The motor adopts special high temperature motor, which can operate normally in high temperature environment. The fluid part is made of temperature-resistant material, which can withstand the test of high temperature environment. In addition, the shell is made of glass fiber reinforced resin, which not only has good high temperature resistance, but also has corrosion resistance, and can be used for a long time in harsh working environments.
（三）Significant performance
High temperature centrifugal fans have many significant performance advantages. First of all, its air performance is good, high efficiency, smooth operation. Compared with other types of fans, high temperature centrifugal fans can provide greater air volume and pressure at the same power to meet the demand for air flow in high temperature environments. Secondly, the high temperature centrifugal fan has the characteristics of energy saving. By optimizing the structure design and adopting the high-efficiency motor, the energy consumption is reduced and the operation cost is saved for the enterprise. Moreover, the fan can prevent the intrusion of acid and alkali gas, effectively protect the internal components, and ensure the bearing life. At the same time, the shell is smooth, avoiding the attachment of debris, reducing the maintenance workload, and improving the reliability of the equipment. For example, in the chemical industry, high-temperature centrifugal fans can operate stably in corrosive environments to provide reliable ventilation for production processes. In petroleum, metallurgy and other industries, the high efficiency and stability of high temperature centrifugal fans have also been widely recognized.
三、Wide application scenarios
（一） showing its strength in The industrial sector
In the field of chemical industry, high temperature centrifugal fans can discharge high temperature exhaust gas in time during various chemical reactions to ensure the safety of the production environment. For example, in chemical production, high temperature and high pressure reaction conditions are often involved, and high temperature centrifugal fans can effectively transport the hot air or high temperature gas generated by the reaction to ensure the smooth progress of the production process. At the same time, its corrosion resistance also enables it to operate stably in the chemical environment and avoid being damaged by chemical corrosion.
In the oil industry, high temperature centrifugal fans play an important role in the refining process. A large amount of high temperature gas is produced in the refining process, which needs to be transported and circulated by centrifugal fans. Due to its high pressure ratio and large head capacity, multistage centrifugal fans are especially suitable for scenarios requiring high pressure and high flow in the oil industry, such as crude oil transportation and oil heating.
In the metallurgical industry, high temperature centrifugal fans are used for the purification of blast furnace flue gas systems and the ventilation of various high temperature furnaces. In the process of high temperature iron making, a large amount of high temperature flue gas needs to be discharged in time, and high temperature centrifugal fans can withstand high temperature conditions and effectively complete this task. At the same time, during the combustion process of the metallurgical furnace, sufficient oxygen supply is required, and the centrifugal fan can provide stable air flow to ensure the efficient conduct of the metallurgical process.
In the power industry, high-temperature centrifugal fans in nuclear power plants are used in the cooling system of nuclear reactors to ensure that the reactors operate within a safe temperature range.
In the traditional thermal power generation, the high temperature centrifugal fan is used for the ventilation and induction of the boiler to improve the combustion efficiency and reduce the emission of pollutants.
In the forging industry, the high temperature centrifugal fan can provide cooling air for the forging equipment, reduce the temperature of the equipment and extend the service life of the equipment. At the same time, the high temperature exhaust gas generated in the forging process also needs to be discharged in time through the centrifugal fan to ensure the safety of the working environment.
In the field of environmental protection, high temperature centrifugal fans are used for waste gas treatment and pollution prevention. For example, in the purification of industrial waste gas, the centrifugal fan can transport the high-temperature waste gas containing harmful substances to the purification equipment for treatment, reducing pollution to the environment
（二）specific occasion
In dust collection occasions, centrifugal fans can well improve the cleanliness of a certain area, and the dust is discharged through the exhaust process by centrifugal force. It not only plays the role of ventilation and cooling, but also plays an important role in dust removal. For example, in some factories, because the dust is particularly large, it may affect the health of employees, and the application of high temperature centrifugal fans can effectively improve the situation.
In the case of exhaust air in the incinerator, the centrifugal blower used in the incinerator is designed to meet the requirements of gas volume and pressure in the incinerator. The forced ventilation system uses high-pressure centrifugal blowers to feed air into the incinerator, and an induced draft fan is used on the exhaust side. In fluidized bed furnaces where sludge is incinerated, a multistage blower system is used because of the high pressure required to provide a proper air supply.
For VOC organic exhaust occasions, high temperature centrifugal fans can effectively discharge high temperature gases containing volatile organic compounds and reduce environmental pollution. Its corrosion resistance also enables stable operation during the treatment of organic waste gases.
In high temperature exhaust applications, the high temperature resistance of high temperature centrifugal fans makes them an ideal choice. Whether it is industrial furnaces, ovens or other high temperature equipment, high temperature centrifugal fans are needed to ensure the smooth discharge of hot air or high temperature gas and maintain the normal operation of the equipment.
In semiconductor processes, high temperature centrifugal fans can be used for ventilation and cooling during chip manufacturing. Due to the extremely high environmental requirements of the semiconductor manufacturing process, the efficient and stable performance of high temperature centrifugal fans can meet this demand.
In forced air supply occasions, such as mines and tunnels, high temperature centrifugal fans can help air circulation, fresh air re-entry, timely discharge of dirty air, but also can play a role in dust removal, help to improve the transparency of the air in mines and tunnels, improve the working environment of staff. And can provide a larger gas flow, effectively deal with these special conditions of exhaust gas emission problems.
The high-temperature centrifugal fans used by several steel mills developed by our company this year have been well received by the market, indicating that the high-temperature centrifugal fans have broad market prospects, so the future of the high-temperature centrifugal fans is worth our looking forward to.
Post time: Oct-31-2024