文章來源： 作者：羅茨機電 發布時間：2022-03-30 瀏覽次數：574
Causes and solutions of burning of three blade roots blower
1、 The pressure of the pipe is a factor that easily leads to the excessive temperature of the fan. The three blade roots fan has a fixed number of main pipes at the air outlet according to different diameters. If the pipe diameter with special requirements is artificially changed, it is easy to reduce the pressure. In terms of breeding, the main pipes are relatively thin. If the diameter of the main pipe is modified, corresponding measures need to be taken to ensure the normal pressure of the fan.
2、 Working environment: according to the normal design standard, the fan should operate in the fan pump room. However, according to the author's many years of experience, most three leaf roots fans operate in the open air, and the influence of summer factors is more obvious. If conditions permit, refrigeration and cooling equipment can be equipped on site to avoid the influence of environmental factors on the fan as far as possible, or sound insulation cover and heat dissipation device can be equipped.
3、 The configuration of the fan and the pressure of the fan are constant with the change of the air volume, but there are often cases of a pony pulling a cart, that is, a small motor with a large fan. In this way, in order to meet the flow requirements, the fan will cause a relatively large load on the motor, resulting in the motor burning out and the fan burning out.
4、 Install the fan. If there is no problem with the flow pressure, overload or heating of the new fan at the beginning, but it will start to burn after a period of time, it indicates that the fan needs to recheck the tightness of the belt and retighten the fixing screws.
Operating procedures for three blade roots blower
1、 Preparation and inspection of three blade roots blower before startup
The voltage fluctuation value is within 380v10%, and the three-phase power supply cannot be out of phase; Instruments and electrical equipment shall be intact, and electrical equipment to be grounded shall be reliably grounded; The connection between fan and pipeline, frame bolts, etc. shall be fastened; The lubricating oil in the gearbox shall be marked according to the specified brand and added to the oil marking line; Before starting, rotate the pulley by hand for 2 ~ 3 times to see if there is any abnormality; The outlet valve of the fan is closed and the vent valve is fully opened.
2、 Three blade roots blower starts operation
Open the exhaust valve and exhaust valve of three blade roots blower; Start the power supply. After 30 seconds, if there is no abnormal phenomenon (such as metal friction, excessive current, etc.), gradually close the exhaust valve to make it operate normally; During normal operation, do not close the outlet valve to avoid bursting accident; If several fans are turned on at the same time, one should be turned on first, and then the other should be turned on after the no-load operation is normal. After the no-load operation is normal (30 seconds), close the exhaust valve.
3、 Shutdown operation
Make records before shutdown, record the voltage, current, wind pressure, temperature, operation time and other data, and gradually open the exhaust valve; Press the stop button; Close the exhaust valve.
4、 Inspection of fan
After the fan operates normally, patrol inspection shall be conducted once every hour, and the instrument readings (voltage, current, wind pressure, temperature, etc.) shall be recorded once every 2 ~ 3 hours. During patrol inspection, pay attention to whether the fan sound is normal, and there shall be no friction sound and impact sound during operation. If there is any abnormality, stop the machine immediately for inspection.