explosion-proof blower adjustment several common problems i. Problems related to the start of explosion-proof blower. The explosion-proof blower can be started at rated power of the motor, in addition, it can be started at reduced pressure. However, care must be taken in choosing which starting method to use. When the selected motor is started at rated power, the working voltage must be five to seven times of rated voltage before it can be started normally. The square meter of the working voltage must be directly proportional to the torque balance. Vacuum starting must be used in two cases.
One case is that the volume of the power network of the power supply system is not enough. One case is that the output power is above 11KW, which is suitable for vacuum starting.
Two, the difficulties related to the test run. In the case of explosion-proof blower test, we must ensure that not one person is in actual operation, at least two people to carry out the test work. One person is used to operate the switching power supply, and one person is always used to carry out real-time monitoring system for the operation of the explosion-proof blower. If the abnormal situation is found, the first thing to do is to let the explosion-proof blower immediately stop working, and then carry out the next adjustment link. First, the centrifugal impeller into. The thing to do is to check how the centrifugal impeller of the explosion-proof blower rotates, and whether the orientation is appropriate;
Second, the current situation. In the case of explosion-proof blower test run all normal operation, watch the current, check whether all kinds of running current is maintained for a long time and balance, this current is much larger than the rated voltage. Whether it is current or into, if there is an abnormal situation, it is necessary to terminate the work of the explosion-proof blower which has been tested and carry out the necessary inspection. Finally, let the explosion-proof blower all normal operation, observe the situation. After it operates for five minutes, the explosion-proof blower will stop and see if it has abnormal conditions. If there are no abnormal conditions, the explosion-proof blower can operate normally and carry out the next step of work. Common problems in the test run of explosion-proof blower. There is also a common problem in the case of explosion-proof blower test, especially in the case of single-speed centrifugal fan test, it is necessary to start the low-speed gear first, distinguish the rotation direction of the centrifugal impeller, and see whether there is a problem in the rotation direction; And for the high speed of starting more attention, be sure to start until the explosion-proof blower stops down. If it is urgent to start, it is very easy to lead to the rotation direction of the centrifugal impeller is not correct in the case of high speed operation, which will make the switch of the explosion-proof blower trip, and will cause redundant damage to the motor when it is more serious. Four, explosion-proof blower input switch power supply problem.
In the case that the explosion-proof blower can operate normally, the thing to do is to check the explosion-proof blower type switch power supply to see if everything is normal. The same principle, explosion-proof blower type switching power supply to the rated voltage within the scope of operation, not higher than the rated voltage. Naturally, if the input current of the explosion-proof blower exceeds the rated voltage and still works normally again, in this case, it is necessary to check the working voltage of the explosion-proof motor to see whether the working voltage of the explosion-proof motor is normal. Five, the fan box problems. The problem of the output power of the motor must be especially indicated that it is not the output power of the motor of the explosion-proof blower which is necessary when all the vents are opened, but the motor of the explosion-proof blower in a certain working condition, the damage of mechanical equipment and the amount of storage it needs.
For example, the vent of the explosion-proof blower does not promote other external friction resistance, that is to say, the vent is not connected to the pipeline, then the explosion-proof blower in operation is actually empty operation, very easy to cause the damage of the motor of the explosion-proof blower. From the given on the level of security, must be clerk in the explosion-proof blower channel or pipe is vents and a gate, in the case of a centrifugal fan starting gate closed, under the condition of the explosion-proof blower all normal operation for gate valve gradually open, has arrived in the work situation requirements, natural, during this time be sure to always observe the explosion-proof blower current Whether the quantity exceeds the standard value. If exceeded standard value, must worker makes solution method immediately, so that sequela.