The safe operation of the diesel generator to ensure the normal operation of the power system and power quality plays a decisive role at the same time, the diesel generator itself is a very valuable electrical components, therefore, should be different kinds of fault syndrome and abnormal operation state, equipped with improved performance of relay devices. Here's how to judge when a diesel generator is out of order:
The general principle of fault judgment of diesel generator is combined with simple structure, principle of contact and clarify phenomenon, combined with the actual, to complex, from the outside to the inside, to find out the reasons, according to the Department section.
1, to judge the fault from the overall analysis, troubleshooting should be comprehensive
The diesel generator system, components, parts are closely related, a component or a system or a part of the fault, it will inevitably involve other systems parts or parts. Therefore, a fault phenomenon can not be viewed in isolation, the overall analysis of the causes of the fault and timely troubleshooting.
2, to find the diesel generator fault, should avoid blind disassembly
Do not disassemble parts of the diesel engine when troubleshooting. Especially in foreign units or spare parts, but also to avoid blind big demolition, unloading, so that the original may be restored to the fault can not be ended. At the same time, disassembly and reassembly will affect the diesel engine parts running in good matching surface or sealing surface, damage the accuracy of diesel engine assembly, and make the performance of diesel engine decline.
3, to find fault should be careful, with a look, listen, touch, smell, all-round inspection
In the absence of advanced detection equipment, the general use of direct sense diagnosis method for fault diagnosis, summarized can be divided into: see, listen, touch, smell.
See: in the operating process and external characteristics of diesel generator, such as the smoke exhaust pipe is abnormal; the exhaust pipe is red; the oil color is normal, whether the oil from the oil pan is increased; the release of oil containing water; fuel oil system, cooling system and lubrication system are Water Leakage, diesel oil leakage; the machine instrument indicates whether there are abnormal; nuts all moving parts is loose; the diesel engine operation are vibration, swing etc..
Listen: mainly listen to the abnormal noise during the operation of the diesel generator, and judge the fault according to the nature and location of the abnormal sound.
Touch: touch it. Such as the fluctuation of the high pressure oil pipe, the shock of the unit, the temperature of the oil pipe or the oil case and the indication of the oil temperature indicator. The boot can be quickly by hand test every exhaust manifold temperature is consistent, if a cylinder is too low, it can be considered that the cylinder is bad or not, but we should pay attention to avoid scald.
Sniff: diagnose by smell from a fault. There is no smell of diesel generator in the working process of diesel engine; whether there is a smell of burning oil etc..