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.
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.
1. Forced delivery of gas
When Roots blower transports gas, it needs to carry out forced compression on the blower. When selecting the blower, there is a pressure parameter, such as 39Kpa. When Roots blower compresses air, the maximum pressure it can withstand is 39Kpa. When the pressure of the current pipeline reaches 39Kpa, the blower can overcome the pressure and operate normally. Forced compressed air operation will inevitably generate heat, so the exhaust fan of Roots blower comes out with a certain temperature.
2. The inlet temperature transports clean air, and the inlet temperature is generally controlled below 40 ℃, exceeding 40 ℃. It is difficult to achieve good delivery results because of high performance requirements for ordinary fans in all aspects.
3. Inlet temperature of normal fan
If we deliver clean air, the outlet temperature should be kept below 100 ℃ as far as possible. If the temperature exceeds 100 ℃, we need to water cool the oil tank. If we use a fan with high pressure, we need to use a two-stage series fan and install a cooler to cool the air.
4. Influence of high temperature on fan
The high temperature will have an impact on the oil tank, seals, bearings, etc. of the fan, which may seriously cause the fan to fail to work. In the work content of daily inspection, the fan body temperature, bearing temperature, oil tank temperature, all need to be checked and recorded every day.
I believe that after reading the above content, you should also understand the reason why Roots blower blows hot air. I hope it will help you.
Text label: Roots blower
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