How to prevent the 150kw generator from crashing?

The so-called speeding failure refers to the phenomenon that the speed of the diesel engine is out of control, and the speed greatly exceeds the specified maximum operating speed. Once the 150kw Cummins generator is in a speeding situation, the bolts will break due to severe overspeed, and the cylinder head, body, piston and other parts will be damaged, and even the crankshaft balance block and the governor flyweight will be thrown off, the flywheel will be broken, and the valve spring will be broken. , and even major accidents such as the scrapping of the whole machine directly threaten the personal safety of the crew operator.

cummins generator

 

       What is a flying car breakdown? The so-called speeding failure refers to the phenomenon that the speed of the diesel engine is out of control, and the speed greatly exceeds the specified maximum operating speed. Mostly occurs in generators using mechanical speed control devices, and EFI is rare.

 

       The 150kw Cummins generator's speeding failure may cause a major accident and bring great harm to the diesel engine. Once the 150kw Cummins generator is in a speeding situation, the bolts will break due to severe overspeed, and the cylinder head, body, piston and other parts will be damaged, and even the crankshaft balance block and the governor flyweight will be thrown off, the flywheel will be broken, and the valve spring will be broken. , and even major accidents such as the scrapping of the whole machine directly threaten the personal safety of the crew operator. Therefore, it is very important to prevent the speeding failure in advance, so how should users prevent the speeding failure of the 150kw Cummins generator?

 

       1. During the use of the generator set, the vehicle speed should be strictly controlled: not too high - easy to cause speeding, nor too low - easy to burn electrical appliances, such as reactors, rectifier diodes, silicon bridge rectifiers, so in daily use During the process, the speed should be controlled at about 1500 rpm, that is, the voltage is about 380V.

       2. Strictly implement the patrol inspection system: once it is found that the speed of the generator changes on its own during the working process, it fluctuates up and down, or rises by itself, or the sound suddenly increases, etc., it should be stopped immediately for inspection or report.

       3. Strengthen daily maintenance work

       1. Keep the machine oil and water clean, appropriate and without deterioration. In particular, the oil level in the high-pressure fuel injection pump should be strictly controlled at the required position - the centerline position of the lower plug of the governor housing. The liquid level is too high and the viscosity is too large - the resistance increases, which limits the speed control effect of the governor; the liquid level is too high or there is no liquid level - the parts in the governor are worn, and the speed regulating function is reduced or lost, thereby This leads to the occurrence of a speeding accident. Therefore, the phenomenon that there is no lubricating oil or insufficient lubricating oil in the governor is resolutely avoided.

       2. Carefully check the fastening of the bolts of all parts of the generator to ensure that they are intact and not loose. Especially to prevent the screw plug at the lower part of the governor shell from loosening or falling off, resulting in the loss of lubricating oil in the governor, wear of parts in the governor, jamming of the rack, damage to the bearing, etc., loss of the speed regulation effect and causing the speeding.

       3. Increase the inspection density of the governor of the high-pressure fuel injection pump, the lubricating oil surface in the camshaft box, the bottom casing, the oil pressure gauge and the connecting oil pipe, the oil cooler and the connecting pipeline, the liquid level and water quality in the water tank, etc. The liquid level is suitable, the oil pipe is in good condition, and there is no looseness, openness and leakage.

 

       The above are some methods to prevent the 150kw Cummins generator from running away. When the unit is running, the working sound suddenly increases and a harsh whistling sound is issued. Once this sound is heard, it means that the flight crew has failed, and the user must immediately take decisive and effective measures to stop the vehicle to avoid major losses.