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  • 20 series
name: 20 series
date: 2021-04-06 13:38:47
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about:

  Shandong Ruidien Environmental Protection Technology Co., Ltd. is located in the high-end equipment manufacturing base of luozhuang, Linyi City. It has always been a modern enterprise focusing on the R&D, design, production and manufacture of centrifugal ...




DETAIL



Fan flow channel

     Establish a huge calculation grid for the internal flow channel and perform three-dimensional aerodynamic calculations (CFD) to achieve the best aerodynamic efficiency.

     Other domestic multi-stage centrifugal blowers are mostly based on actual needs, from saving costs and satisfying a single aspect of the design of the flow channel, which cannot achieve the best and best efficiency requirements.

      Relative movement of a pair of Roots blower rotors

20 series(图1)

impeller

      The RDN multi-stage fan rotor has a variety of options, and the impeller can be combined according to different working conditions to achieve the best efficiency of the fan in a wide range of working areas.

     Other domestic multi-stage centrifugal blowers mostly design their impellers according to actual needs, from saving costs and satisfying a single aspect, which results in low fan efficiency.

     Roots blower moves relative to the rotor.

20 series(图2)

Balance plate

     Due to the pressure difference between the two ends of the multi-stage centrifugal fan impeller, resulting in the axial thrust of the rotor, the patented balance wheel solves all the problems caused by the axial force, improves the efficiency of the fan, and extends the life of the bearing.

    RDN multi-stage centrifugal blower The pressure difference between the two ends of the multi-stage centrifugal fan impeller causes the axial thrust of the rotor. The patented balance disc solves all the problems caused by the axial force, improves the efficiency of the fan, and extends the use of the bearing. life. Other domestic multi-stage centrifugal blowers.

    Domestic brands and most foreign brands do not have a balance wheel design, so in order to overcome the axial force, the general wind machine uses thrust bearings to withstand the axial force in the design, so additional power loss and additional load on the bearing are added, which affects the fan Efficiency and bearing life, and it is easy to cause bearing damage.

    Roots blower without balance plate

离心鼓风机(图3)

Diversion ring

      The patented flow guide rectifier can guide the air flow into the impeller smoothly, and at the same time realize the pre-rotation of the air flow or control the air intake direction of the next stage, which improves the efficiency of the fan.

      The RDN multi-stage centrifugal blower guide ring can guide the airflow into the impeller smoothly, and at the same time realize the pre-rotation of the airflow or control the intake direction of the next stage, which improves the efficiency of the fan. Other domestic multi-stage centrifugal blowers.

      The domestic multi-stage fan does not have a flow guide ring. When the medium enters the next stage impeller from the first stage impeller, it will inevitably cause some energy efficiency losses, thereby reducing the overall efficiency of the fan.

      Roots blower without balance plate

离心鼓风机(图4)    离心鼓风机(图5)

Lubrication and heat dissipation method

    The RDN multi-stage centrifugal blower adopts thin oil lubrication, and the oil tank is externally installed. The ideal lubrication and heat dissipation effect can be achieved through natural air cooling.

    Other domestic multi-stage centrifugal blowers use grease lubrication in most domestic brands. Due to the defect of grease heat dissipation, cooling water needs to be supplied to the bearings to achieve the cooling effect. This method wastes water resources and increases operating costs.

    Roots blower water cooling

离心鼓风机(图6)    离心鼓风机(图7)

Control System

Equipped with an internationally advanced control system, it can realize:

   1. Monitoring and protection of fan bearing temperature and vibration

   2. The fan inlet valve automatically adjusts the motor speed according to the flow demand and controls the flow demand

   3. According to the flow demand, the motor speed is automatically adjusted by the inverter to control the flow demand

   4. According to the current/power of the fan and other process parameters, the flow value of the fan at any time is automatically and accurately calculated through the mathematical mode, without the need to install a flowmeter.

   5. According to the monitoring parameters, automatically control the action of the vent valve to prevent the fan from surging and protect the fan from running smoothly.

   6. Monitoring and protection of other parameters

   7. Through the touch screen, the parameters and control variables of the fan can be set and modified

   8. Through the automatic control of PLC, the fan flow can be automatically adjusted according to the user's flow demand, so as to achieve the maximum energy saving effect.

The control systems of other domestic brands of domestic multi-stage centrifugal blowers can only achieve some basic protection and regulation functions:

   1. Fan shaft temperature monitoring and protection, most of them have no vibration protection function;

   2. The fan flow cannot be automatically calculated according to the relevant parameters of the fan;

   3. The surge calculation cannot be automatically performed, and the surge protection cannot be performed automatically and accurately. It can only be performed according to empirical data.

   Roots blower is simple



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