During the use of diesel generator set, because operators are negligent in maintenance or diesel
generators long-term overloaded work, there will be some unexpected situations,
as follows:
1.During the operation,
the diesel engine suddenly changes its sound, the oil pressure drops or there
is no oil pressure directly. It is possible that the high pressure oil pump is
damaged and emergency stop is required;
2.Observe the meter
speed, if the speed automatically rises or stays high, it is very likely that
there will be a flying phenomenon;
3.After working for a
period of time, the genset temperature rises sharply, or it is failure to start
up. The reasons are mainly poor cooling, we need to check the water tank first;
4.The sound of normal
diesel generating set should be clear and melodious. If there is any abnormal
sound or sound of knocking on the cylinder block, emergency shutdown and
checking is required;
5.If there are oil
leakage, water leakage and other conditions in oil pipeline, emergency shutdown
and inspection is also required;
6.When the machine
breaks down, stop and check as soon as possible to avoid irreparable damage to
the machine and minimize the damage to the machine;
7.Cooling water
temperature exceeds 99 ° C, when the fault light is red, the genset must be
stopped immediately;
8.Cylinders, pistons,
governors and other moving parts are stuck;
9.When the generator
voltage exceeds the maximum reading on the metter;
10.In the event of fire
or electric leakage and other natural hazards;
11.Generator set has
strong vibration (greatly exceeding the allowable value);
12.The generator or main
exciter slip ring has a strong circular spark that cannot be eliminated.
Emergency shutdown
operation is required when one of the above conditions occurs in diesel
generator set. Diesel generating set itself has an emergency stop button, at
this time, press the emergency stop button or quickly press the stop control
handle of fuel injection pump to the stop position, the diesel generator will
quickly cut off the load, and immediately close the throttle, while the red
"emergency stop" light is on. Need to press the button again to
delete the emergency stop signal. If there are serious faults or distribution
faults, you can also press the button on the control panel, and the unit will
stop immediately.
In fact, all faults
always give operators some warning signal before spare parts break down or engine
damage occurs. So the operators need to be smart, and notice alarm signals
(sudden drop in oil pressure, abnormal sound, etc.) and immediately stopping
the engine.
Emergency
shutdown operation is different from normal shutdown operation.
Emergency shutdown
operation. Once the operator finds that there is a serious fault or
distribution fault in the diesel generating set, he can press the emergency
stop button of the control panel to stop the unit immediately. If there is no
special circumstances, we advise users not to stop the unit at will through the
emergency stop button.
Normal shutdown
operation. Before stop the diesel genset, the load should be cut off first, and
the fuel pump switch handle is immediately turned to the position where the oil
circuit is cut off, so that the diesel engine immediately stops; the pressure
gauge value of the unit drops below the specified value.
Whether it is normal or
emergency shutdown, correct shutdown operation is very important for diesel generating sets.These operations can protect the equipment from damage, which
in general is conducive to prolonging the life of the units.
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