What aspects should diesel generator sets be overhauled?

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Diesel generator sets are divided into several major systems, which should be overhauled from each system. 1. Oil lubrication system; 2. a fuel system; 3. a control and protection system; 4. Cooling and heat dissipation system; 5. an exhaust system; 6. a starting system; Chengdu Kangfa Power Equipment specializes in the sales of diesel generator sets, and has been overhauled by diesel generator sets.

Diesel engine part:

1. Inspection and maintenance of speed control system.

2. Inspection and maintenance of gas distribution system.

3. Replace the three filters.

4. Inspection and maintenance of exhaust and turbocharging systems.

Generator Section:

1. Excitation system inspection test.

2. Inspection and test of pressure regulating system.

3. Inspection and test of the outgoing system.

4. Inspection and test of protection system.

What should I pay attention to when repairing diesel generator sets?

1. If the diesel generator is in working condition or the coolant is in a hot state, the diesel engine should be cooled first before the water cap can be slowly loosened to relieve the pressure of the cooling system;

2. Before any diesel generator repair work, first remove the wiring of the battery to prevent accidental starting; The negative wiring of the battery should be removed first;

3. Before starting to remove the fault, it is necessary to carefully understand the details of the fault, such as the working conditions of the diesel engine before the failure, the load, the altitude, the ambient temperature, the environmental dust condition, the road condition of the machine, etc. Whether the nature of the failure deteriorated gradually, occurred suddenly, or occurred intermittently, whether it occurred after Notoshi changed the fuel or oil, etc. Fault phenomenon: exhaust smoke color, coolant temperature and consumption, diesel generator noise, etc.

Whether the coolant is contaminated, such as engine oil, iron embroidery, solidified sediment, etc. Whether the oil is contaminated, such as water, fuel and metals. Diesel generator vibration and so on.

4. Conduct rigorous and systematic analysis of diesel generator faults;

5. Establish an organic connection between the signs of failure and the diesel generator system and basic parts.

To carry out the electrical safety overhaul of the diesel generator set, first of all, all the screens that can be locked should be locked when the diesel generator set is running, and the key should be in the hands of a special person, and the key should not be left in the lock hole.

In the event of an emergency, all personnel must be able to use the correct method of electric shock. Ideally, the staff engaged in this work should be trained and accredited.

Whoever connects or disconnects any part of the circuit while working must use an insulating tool.

The aspects that require maintenance of diesel generator sets are as follows:

Check daily. During the daily inspection, it is necessary to check the outside of the generator set, whether there is electrolyte leakage in the battery, and check the voltage value of the battery and the temperature of the jacket water. In addition, it is necessary to check whether the heater of the jacket water, the charger of the battery, and the dehumidification heater are in normal operation.

Monthly check-ups.

The monthly inspection needs to switch the generator set and the mains, and the generator set starts and load experiments, all of which need to be in-depth inspection.

Quarterly inspections. During the quarterly inspection, the generator set needs to be at more than 70% load for 1 hour to burn out the mixture of diesel and engine oil in the cylinder.

The service life and operating power of diesel generator sets are not only in seasonal maintenance, but also very important for the daily maintenance of diesel generator sets. Starting from the details, we can make better use of diesel generator sets.

Xi'an generator: the primary maintenance content of diesel generator sets is (due to the difference in the performance and utilization of various generator sets, the listed standards are for reference only, and should be operated according to the specific environment) small fault inspection: small faults of the unit, lack of water, deformation of the cylinder head, deformation of the body, etc., the damage to the internal active parts should be less, and the lack of oil will stick to the cylinder, and professional testing and maintenance will be carried out.

Minor repair: (use time: 3000-4000 hours) 1. Check the valve of the diesel generator set, Dongfanghong diesel engine is widely used in construction machinery and agricultural machinery; Xinchai is a rookie, and the diesel generator set is repaired or replaced when needed; 2. Check the working condition of the PT pump and injector of the diesel generator set, and repair it

Utilization time: 6000-8000 hours) 1. Minor repair project of diesel generator set; 2. Differentiation engine (except crankshaft); 3. Check the cylinder liners, pistons, piston rings, intake and exhaust valves, and other vulnerable parts of crank connecting rod mechanism, valve mechanism, lubrication system, and cooling system, and replace them when necessary; 4. Inspect the fuel supply system of diesel generator sets.

1. The diesel engine of the generator set is weak, the speed drops significantly after acceleration, it is unstable, the sound is abrupt, and the exhaust emits black smoke.

2. When the temperature is normal, the cylinder pressure cannot reach 70% of the specified pressure.

3. The fuel and oil consumption of the diesel engine of the generator set have increased significantly, and the phenomenon is black smoke.

4. It is difficult to start at room temperature, and the crankshaft bearing, connecting rod bearing and piston pin have a knocking sound during operation.

5. The internal cylinder liner and piston ring of the diesel engine of the generator set are seriously worn, the ovality and taper of the cylinder, the gap between the piston and the cylinder, and the ovality of the crankshaft journal and the connecting rod journal exceed the specified limit.

The daily maintenance is similar to that of the car engine, with the three filters and the oil replaced.

1. The generator set and the control panel are protected by electricians and professional maintenance personnel, and the proposition of large-scale maintenance or small-scale maintenance is put forward according to the operation status, and the connecting rods of each connection point and actuator are regularly lubricated to check whether the fixed points of each missing banquet are reliable and firm, and the bolts are strong and loose.

2. Full-time maintenance personnel shall carry out generator maintenance and protection according to the needs of generator protection, and make specific records of the operation process and the number of replacement parts, and fill in the generator test run record form.