Roots blower is mandatory gas transportation equipment. Because of the forced transportation, the air will be compressed. The process of applying pressure to reduce the air will release a lot of energy. Energy is heat. Different models of fans have different degrees of temperature rise, so the pressure will increase and the temperature will be high. However, the compression ratio has an impact on the normal temperature rise of about 20 degrees Celsius. Why does the temperature rise actually exceed 20 degrees Celsius. First of all, the fan may have some obstacles, such as machine friction, mechanical friction, which will release a certain amount of heat. If the exhaust temperature rises further, it may exceed 110 degrees in serious cases.
The air delivered by Roots blower is made of cast iron and normally sealed. The temperature at the air inlet is generally controlled below 40 ℃. The temperature will further increase after 40 ℃ is boosted and compressed by the blower. In order to ensure the normal operation of bearings, lubricating oil, gears and impellers, the temperature after boosting should not be too high, It is generally about 90 ℃.
If the temperature of the gas we transport exceeds 40 ℃, such as saturated steam with high temperature, the requirements for the fan will also be increased, such as stainless steel material, anti-corrosion treatment for the fan, replacement of sealing method, cooling of bearing and oil tank, etc., which requires special treatment before use.
In most cases, Roots blower conveys clean air. If the temperature of clean air is lower than 40 ℃, the normal operation of the blower can be ensured. Conventional configuration: cast iron, piston ring seal, air cooling can be used.
Secondly, the pipeline is blocked, which leads to overpressure. Increase heat release, overpressure is a more dangerous fault, and the fan motor is easy to burn out, which is also an influencing factor for the temperature rise of Roots blower.
Finally, due to the influence of inlet air temperature, the inlet air temperature of ordinary fan cannot exceed 40 ℃. The transportation medium is air. In this case, if the cooling is not smooth, the inlet air temperature may exceed 40 ℃, and the fan outlet temperature will rise. Excessive temperature will affect the spare parts of the fan. For example: seal, bearing, water tank lubricating oil temperature, etc., which may lead to fan failure. Therefore, in the daily patrol work, the fan temperature is also the test content. The fan temperature monitoring every day ensures that the fan temperature does not exceed a certain range, so that the roots fan can be used for a long time.
I believe that after reading the above content, you should also have a better understanding of the intake temperature of Roots blower. I hope it will be helpful to you.
Text label: Roots blower
