Jet Power Generator's Hydro Power Generator

Diesel generator scuffing failure of precursory characteristics of serious smoke exhaust and stalling, can't turn the crankshaft.

Working at this time can't start the diesel engine, but should find out the reason and exclusion.

Lubricating oil in use process, because of the dust from the outside or running excessive wear of the metal scrap the parts and parts formed by the erosion of metal salts etc. Will make the lubricating oil metamorphism.

Lubricating oil deterioration after dark black, foam, grinding with finger, no sticky feeling, dripping on the white paper is dark brown.

Contaminated the oxidation of lubricating oil in use process will produce acid soluble and insoluble colloidal sediment deposition in oil orifice, filter and various parts in the clearance, due to the shortage of lubricating oil in motion pair surface components, direct dry friction between the metal and abrasive wear, resulting in the diesel engine shaft and cylinder serious accidents, such as the use of the diesel engine reliability serious decline.

Main causes include: measures: (
1)

In the early detection of cylinder shall, first of all, oil cylinder oil injection rate.

Such as overheating phenomenon has not changed, can adopt single cylinder cut-out, to reduce the speed, speed up the piston cooling measures, such as until eliminate overheat.
（
2)

When found cylinder, must reduce the speed quickly, and then stop.
Continue to increase piston cooling, at the same time for turning.
（
3)

As a result of the piston killed not turning, to stay in the piston cooling after a period of time, barring any activity.

Easy cause overheat diesel engine deflagration, water temperature and oil temperature is too high can also lead to pull cylinder and piston ring jammed, resulting in a diesel engine power.

When temperature increases, the diesel engine should check the oil cooler and the radiator, remove scale.

If the body temperature is too low, will cause heat loss increases, the combustion chamber of diesel spray people cannot complete combustion, exhaust pipe take white smoke, the diesel engine.
（
4)

When the piston bite dead is serious, can be injected into cylinders kerosene, after waiting for piston cooling leverages the flywheel or turning.
（
5)

While lifting cylinder inspection, piston and cylinder liner should be traces on the surface of a cylinder with oil stone grind carefully.
The damaged piston ring must be replaced.

If the piston and cylinder liner was badly damaged and should be replaced.
（
6)

When piston refitted, must carefully check whether the oil hole on cylinder oil injection is normal.

If piston and cylinder liner are new, it should be after refitted to get up to speed, the running-in should begin to gradually add load and continuous operation under low load.
（
7)

Such as cylinder accident cannot repair or not allowed to repair, can adopt sealed cylinder method to continue running.
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Capacity of multimachine parallel operation: when less than 800 kw generator capacity, can choose a single machine;

When the capacity is more than 800 kw, should select two or more.

From reliability considering generator can also choose two sets of parallel power supply, emergency generator sets for should not be commonly more than 3 units.
Due to the current domestic 0.

4 kv low-voltage distribution cabinet is no more than 6300 a lab report, parallel operation of generator, the total capacity of not more than 3200 kw (
0.
4kV)
。

If need more large capacity of diesel generator set, recommended 100 kw generator set.

Elected by more than one unit, the unit should be chosen model, the same physical parameters, such as capacity, voltage regulator, speed characteristics, complete sets of equipment of similar to the unit parallel operation;

, the consistent operation of the fuel properties should be used for the maintenance and sharing of spare parts.

When two emergency generating sets, since starting device should make can be as spare for two units, namely the mains power failure outage after delay confirmation, since the starting order, if the first units for three times since the start failure, should send out alarm signals and automatic starting second diesel generator.

Use 24 v battery as a general starting power supply.

Generator temperature, insulation class, and the rated load capacity: generator set power rating on different generator temperature rise and insulation level, its rated load capacity will also change.

Temperature rise is defined as the winding temperature is higher than the environment temperature extremum.
一个。

Insulation level and the rated load capacity: H: 155 ℃ spare;
F: 105 ℃ standby;
B: 80 ℃.

The maximum winding temperature: F: 105 ℃ = based on environment temperature 40 ℃, allows the temperature of 105 ℃;

B: 80 ℃ = based on environment temperature 40 ℃, allows the temperature of 80 ℃;

High ambient temperatures, generator rated power attenuation;
The traditional insulation class is H.

Generator and excitation mode choice: self-excited synchronous alternator from generator armature winding to the automatic voltage regulator (
AVR）
At the same time provides the power source and signal source;

And permanent magnet simulative synchronous alternator, automatic voltage regulator (
AVR）
Deputy excitation power source from mechanical armature winding is made;

Controlled by the generator armature winding currents, by rotating rectifier excitation electrical armature windings, and field winding, to keep the generator output voltage stability.

AVR self-excited synchronous ac generator power output to the influence of the armature winding voltage waveform, and load properties, especially in nonlinear load on the armature voltage waveforms are the obvious effects of red team;

Permanent magnet synchronous simulative alternator AVR power source from the permanent magnet excitation armature winding, has nothing to do with the generator armature winding voltage waveform distortion.

So if the main room of the UPS power supply for the data of diesel generator set should first choose permanent magnet excitation type simulative synchronous alternator.
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