Operation and maintenance of diesel generator

A diesel generator cooling water from the condensation of water turbine, take another road to the fire as a backup water source, are filling with a rubber hose.

Two diesel generator with the following alarm signal:

Automatic startup failed (START FALL)

Low lubrication oil pressure (LOW, OIL, PRESS)

Lubricating oil temperature is high (HIGH, TEMP)

Diesel generator overspeed (OVET, SPEED)

Main protection trip (MAINS, FALL)

DC power failure (CHARGE, FALL)

Factory power failure (PLANT, FALL)

Three 、 the key switch of diesel generator is in the following position:

Stop signal test (OFF, RESET)

Alarm signal test (LAMP, TEST)

Automatic status (AUTO)

Initiation test (TEST)

Four, diesel generator set in the standby state of the inspection items:

1. check the diesel generator set without exception, all the external screw connection of the unit is not loose or fall off.

The key switch of 2. diesel engine is in automatic state, no alarm signal appears.

3. lubricating oil pressure gauge, lubricating oil temperature meter and cooling water oil meter are complete.

4. diesel engine oil tank above 1/2 level, and no oil leakage, oily clean.

5. diesel engine oil supply door and return gas should be opened and the pipe is connected properly.

6. Security Section power indicator (MAINS, SUPPLY), A, B, C phase light

7. diesel generator power indicator (GENERATOR, SUPPLY), A, B, C phase lights out.

8. check the oil tank (Qu Zhouxiang) oil dipstick "L" position above (L level low, H high level).

9. check the cooling water level in the cooler is normal, that is, unscrew the upper cover of the cooler, the water level is full of oil.

10. check the battery without debris, the connection is not loose, the charging current is normal, no loss of electricity.

11. distribution panel, control device and electrical part shall be in standby state.

Five 、 starting of diesel engine

1 、 starting of diesel engine

A, general in the standby state, when the electrical 380V any period of emergency power supply is lost, the timely implementation of the automatic start, fast line load.

B, if the emergency power supply is lost while the diesel motor does not start, get the startup command unit, the key switch clockwise to start the test position immediately (TEST), and the signal light, the start of the diesel generator and automatically rise to the rated speed, voltage and the establishment of normal.

2, diesel engine start time in 7~9 seconds will automatically rise to the rated speed, rated voltage.

Six 、 inspection of diesel engine in operation

1. during the operation of the diesel engine, check the meter parameters of the electrical part and adjust it.

2. check the vibration of diesel engine.

3. check the oil flow in the pipe of the diesel engine.

4. check alarm signal.

5. check the lubricating oil pressure gauge, oil temperature indicator and cooling water test indicator, not to the red area.

The normal operation of the oil pressure shall not be less than 1.5bar (protection setting)

The oil temperature during normal operation, not higher than 110 DEG C

Not the normal operation of cooling water temperature higher than 93 DEG C

6. check the diesel engine without oil leakage and water leakage

7. check the parts of the diesel engine without abnormal sound, and observe the smoke exhaust situation.

Seven. Stop the diesel engine

1. the diesel generator has taken the accident security section to the power supply of the working section by the instantaneous power failure method.

2. maintain the empty load running for 3-5 minutes, so that the nozzle screw and piston or valve plug.

3. press the stop button (EMERGENCYSTOR) or turn the key switch counter clockwise (OFF), and the diesel generator stops.

4. if the recovery of diesel generator set emergency standby state, should be the key switch to automatic state (AUTO)

5. make a thorough inspection according to the standby condition

Note: stop with the accident button, turn the knob clockwise 15 degrees, and leave the button.

Eight 、 regular test of diesel generator:

1. in order to ensure the diesel generator set can start reliably at the time of the accident, a start-up test should be carried out every month to check whether the start-up conditions are complete.

2. regular test, the electrical operator must be on duty surveillance, and do the appropriate operation and measures.

3. before the test, the electric generator insulation is qualified, other conditions meet the standby conditions.

4. methods of periodic testing:

The turbine generator during operation, the diesel engine can only do the manual no-load start test, test the diesel generator outlet switch, key switch clockwise to the (TEST) position, the start of the diesel generator.

The steam turbine generator during stop, diesel generator start test in "automatic" position, manually disconnect the security of any period of low voltage power supply switch, diesel generator will start automatically according to the circumstances of the accident, after the establishment of the voltage, followed by automatically closing the diesel outlet switch (B1), standby power switch power bus the diesel engine is connected with the accident, the security section of the load.

The start of the diesel generator, operator should conduct a detailed examination, confirmation of any defect, or timely reporting of treatment.

Nine, matters needing attention and requirements

1. diesel engine room is strictly prohibited fire

If there are 2. diesel engine room fire work, must be approved by the relevant leaders issued hot work tickets, and prepare all fire protection measures

Unit 3. at full load operation, the lubricating oil temperature should be between 82-107 degrees, if the temperature rises abruptly, the reason is not caused by the load may be increased, mechanical failure, should immediately report the unit length, and check

4., lubricating oil temperature in the case of 60 degrees, continuous running for a long time, may cause crankcase lubrication oil temperature acidification, this will accelerate the wear and tear of the machine

5. cooling water temperature between 71-90 degrees is the best range, the parts of the machine relative expansion