The manufacturer of high pressure oil pump introduces the control mode of electric fire pump

In the control principle of electric fire pump, the main or standby pump can be designated arbitrarily. At present, the current signal control method is the earliest and the most in China. The pressure signal control method has been applied to the automatic sprinkler system abroad, which provides a reliable means for the automatic control of the fire water supply system.

Comparison of two main alternative switching modes:

The analysis of the causes of the fire pump failure shows that the ultimate consequence of the failure of the fire pump is that the water supply of the normal feed pump cannot be normal. There are two main reasons for the fire pump failure, one is motor failure and the other is pump failure.

Standby mode of main pump of fire pump:

The fault of the motor can be reflected in time by using the current signal control method of the oil pump. At the same time, motor failure is also the main fault of water pump unit. But this method does not explain whether the fire pump really water out.

Comparison of control methods of oil transfer pump:

The main and standby switch of fire pump is realized by using current signal control method and pressure signal control method. The control requirements of fire pump are consistent, but the signals collected by the two methods are different, and the final control effect is different.

Problems to be noticed in the control method of EH oil pump pressure signal

The electrical contact pressure gauge shall be installed on the outlet pipe of the fire pump, not in front of the fire pump valve.

In the design of signal control discrimination circuit, switching needs to set a certain delay.

The switch of pressure signal control mode can specify the main pump or standby pump of fire pump arbitrarily or switch regularly.

Besides automatic control, the fire pump control shall also have the function of field control. In order to realize the monitoring, control and automatic recording of the building, the working signal of the fire pump needs to be transmitted to the fire control center.