What is the proper temperature range for using Roots blower?

Roots blower can be used in summer and winter, so the machine needs more inspection, and the inspection shall be stopped after the fault is found. What is the temperature range of Roots blower?

Temperature range of Roots blower

In summer, the inlet air temperature of Roots blower is generally 40 ℃. If the temperature exceeds this temperature, the Roots blower may be overheated and burn the motor. In winter, the water-cooled Roots blower is used. Here, attention should be paid to protecting the water-cooled pipe to avoid frost cracking. If the machine is shut down, the water should be drained for cleaning. The higher the pressure, the higher the speed, the higher the temperature, and the higher the temperature of Roots blower, the more requirements will be added to the fan, such as stainless steel materials, or making the fan anti-corrosion for treatment, and replacing the bearing and cooling oil tank in a sealed way, all of which require special treatment.

The normal operating temperature range of Roots blower is 30-90 ℃, and the outlet temperature of blower is proportional to the pressure. Our calculation method for the body temperature of Roots blower: room temperature+10 ℃ temperature rise for every 1000 mm water column rise (within this range, it is the normal value, and if it exceeds this range, it means that the temperature of Roots blower is too high).

Causes of Difficult Treatment of Roots Blower Noise

1. Since the vibration reduction construction was not carried out before the installation of Roots blower, especially for some petrochemical units built earlier, the vibration reduction construction was not considered when the plant was built and installed, and petrochemical enterprises could not stop at will or for a long time for operations such as replacing the vibration reduction foundation of the blower, which led to the difficulty of noise control of high-pressure fans such as Roots blower.

2. In order to ensure the long-term safe operation of Roots blower, the enterprise has improved the patrol inspection, maintenance frequency and motor temperature controllability of high-pressure fans such as Roots blower. The existing fan acoustic enclosures are fully enclosed and the space is limited, which seriously affects the patrol inspection, vibration measurement and measurement of fans Patrol inspection and maintenance operations such as warming, changing lubricating oil, painting anti-corrosion paint, etc., combined with poor ventilation, will affect the heat dissipation of the motor, resulting in frequent fan shutdown and burning accidents due to motor overheating.

3. Petrochemical enterprises generally carry out a major overhaul of the whole plant in 4-5 years, and carry out flaw detection, correction, maintenance, replacement and other operations for each component. At that time, high-pressure fans such as Roots fans will be removed from the base, and the fully enclosed sound insulation cover will also be removed. In many cases, it is found that the sound insulation cover cannot be installed after removal; In addition, during the disassembly process, the sound insulation plate was deformed, which led to the loss of the sound insulation cover due to the inability to install the sound insulation cover back, and the heat dissipation and sound insulation effect would become worse.

The above is an introduction to the temperature range of Roots blower. When using Roots blower, it should be controlled within a certain range to avoid damage of Roots blower due to excessive temperature.