Can the maintenance of diesel generator sets be managed by the monitoring system on a daily basis?

<>2. It can manage the generator set of the whole country, and the generator set factory can also understand the situation of each unit in a different place, and when the unit fails, it can quickly dispatch personnel for after-sales, and the user can also view the progress of maintenance on the mobile phone and understand the progress in time. Reduce maintenance time and save costs.

3. Evaluate the operating status of the generator according to the data detection.

1. Due to the vibration of the fixed frame installed by the sensor during the operation of the diesel generator set, the measurement signal is inaccurate, and the alternating magnetic field produces irregular changes, causing the speed indication to fluctuate. Treatment: Reinforcement of the bracket, which can be welded with the diesel engine body.

2. The distance between the sensor and the flywheel of the diesel generator set is too far or too close (generally this distance is about. If the distance is too far, the signal may not be sensed, and if it is too close, it may wear down the working surface of the sensor. Because the flywheel will move radially (or axial) at high speed, the distance is too close to pose a great threat to the safety of the sensor, and it has been found that the working face of several probes has been scratched.

According to practical experience, the distance is generally about 2mm, which can be measured by feeler gauge.

3. If the oil thrown out of the flywheel sticks to the working surface of the sensor, it will have a certain impact on the measurement results. If an oil shield is added to the flywheel, it can have a good effect.

4. The failure of the speed transmitter makes the output signal unstable, causing the speed indication to fluctuate or even no speed indication, and due to its unstable work and poor contact with the terminal, it will trigger the electrical overspeed protection malfunction. For this, the speed transmitter can be calibrated with the frequency signal input from the frequency generator, and the terminals are tightened. Since the speed transmitter is controlled by a PLC microcomputer, it can be readjusted or replaced if necessary.

1. Precautions:

1. The generator set should be placed in a stable and safe place, and have good ventilation conditions (ambient temperature 40), which is convenient for the unit to dissipate heat.

2. It is strictly forbidden to place it outdoors in the sun and rain to avoid the invasion of water droplets, metal fragments or other sundries.

3. Ensure that the generator set is well grounded, and the power output cable should have sufficient cross-sectional area, good contact, and connect the cable correctly.

4. The load used in the generator set for power generation must be balanced by three-phase electricity, and it is strictly forbidden to run under overload for a long time, and the power should be used in strict accordance with the calibrated power.

5. The motor shall regularly check the wear of the brushes (except for brushless) and the lubricating oil of the bearing chamber and the linkage with the engine flywheel.

6. The unit has been running for 50 hours for the first time to change the oil, and then for every 200 hours of cumulative operation, it is recommended to use CF-4 diesel engine oil.

7. If the unit is not used for a long time, the battery connection line must be removed, and the battery should be fully charged once a month to ensure that there is sufficient power to start the engine.

Second, the start-up operation:

1. For the first time, there is no need to carry out long-term idle running-in and several seepage stoves (the diesel engine has been cold ground before leaving the factory). It can be used directly at loads below 60%.

2. Before starting, the diesel engine should be filled with cooling water and filled with oil to the scale on the oil dipstick. The air switch should be disconnected in the open position.

3. Start the engine, and pay attention to the oil pressure, it is forbidden to accelerate when the oil pressure does not rise.

4. Acceleration to 1500r min, no-load voltage: 400V, frequency: 50Hz, close the generator air switch to the closing position, and connect in turn.

Electricity is used under load.

3. Shutdown operation:

Before the unit is shut down, the electrical load should be cut off first, and the output air of the motor should be switched to the opening position, and the engine speed should be changed.

1500r min to idle speed 500-700r min, cool down for 2-5 minutes, then stop the engine.

Fourth, the unit operation monitoring:

1. The operation of the unit must be operated by a special person and the display of each instrument must be checked at any time (the normal range values of each parameter are: oil pressure, water temperature 50 -96, voltage 400V, frequency 50Hz).

2. Observe whether the instruments and indicators of the control panel are normal, and pay attention to whether the operating sound of each part of the machine is normal and the linkage parts are.

No loose. 3. It is strictly forbidden for the unit to shout at the faulty operation, and if an abnormal situation is found during operation, it should be stopped for inspection immediately, reported to the supervisor in time, and inquired about the factory's technology. In the tank.

Diesel generator set: daily maintenance of generator set.

1. Carefully inspect the inside of the generator, there should be no debris to prevent foreign objects such as screws, tools, and rags from falling in.

2 Remove dust from all parts of the generator with dry compressed air or skin tiger at about two atmospheres. To avoid damage to the coil, metal blowpipes must not be used.

3.Check the lubrication of diesel generator bearings. The quality and quantity of lubricants and greases must comply with the requirements for maintenance. 4 Check whether the connection between the generator and its prime mover is good. At the same time, check whether the axes of the two machines are on the same straight line.

5. Check whether the rotor is flexible and check the quality of the bearing.

6.Clean the collector ring.

7. Check the brush device;

8 Measure the insulation resistance.

9 If the generator structure allows, the air gap can be measured with a feeler gauge.

10 Check whether the excitation wiring is correct and whether the lead wire is good.

11. Check the fasteners, and tighten them if they are loose.

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.

In the process of diesel generator set operation, the operator's monitoring of each subsystem is directly related to the power supply quality of diesel generator set, so it is necessary to conscientiously implement the management regulations of diesel generator set. The following is a brief introduction to the monitoring methods of each subsystem of diesel generator sets.

1. Monitoring of the operating system.

The fluctuation value of the output current frequency of the generator must be within the specified range, if the lubrication handle jumps or slides due to long-term power supply, it will cause the diesel engine speed to be unstable and affect the frequency of the output current. Therefore, the operator must lock the oil supply handle at the rated speed position after the load is added to the unit.

2. Management of fuel supply system.

The physical components of the diesel engine fuel supply system, the diesel generator set should ensure that the diesel is clean, free of impurities, and no leakage during operation, and no air is allowed in the system.

After the impurities in the diesel fuel block the filter screen, it will cause the interruption or insufficient fuel supply of the diesel engine, so this situation is absolutely not allowed in the operation process. When the diesel engine is running at the rated speed, if the oil leaks at each interface, the fuel injection pump or the oil transfer pump, or the air is mixed in the oil supply system, it will cause the power of the entire diesel large volt generator set to drop and the frequency of regret is unstable.

3. Management of lubrication system.

The management of lubrication system is generally carried out from three aspects: oil pressure, oil temperature and oil quality.

In the process of diesel generator set operation, it is necessary to always observe and check the indication of the oil pressure gauge and the oil scale on the oil pan before checking and rolling, because in the process of high-speed operation of the diesel generator set, if the diesel engine cylinder gasket is damaged or the water-cooled oil radiator is damaged, the cooling water will enter the oil pan and cause the oil level to rise and the oil deteriorate. If the operator can not find the above situation in time, the diesel engine will have a tile burning accident, and in serious cases, it will also cause the connecting rod to break the body, resulting in undue major economic losses. Therefore, the operator should take out the oil ruler from time to time for inspection during the operation of the diesel generator set, and should stop the machine immediately for treatment when the fault is found.

1. Why do we need to carry out the detection and maintenance of AC false load for diesel power generation and source units?

1. Detect diesel generator sets.

By detecting the AC false load for the maintenance of the diesel generator set, the unbalanced load capacity of the diesel generator set can be detected, and the steady-state voltage regulation, steady-state key quiet frequency regulation, transient voltage adjustment frequency, voltage recovery time, transient frequency regulation, frequency recovery time, and continuous operation detection of the diesel generator set can be ensured.

2. Detect UPS

Output voltage unbalance, output voltage regulation accuracy, overload capacity, dynamic voltage transient range, mains battery switching time, backup time, bypass inverter switching time.

Second, the main function of the diesel generator set to detect and maintain the AC false load.

1. Query function.

Query diesel generator set to retrieve abnormal records and query diesel generator set detection data.

2. Online communication.

The detector can be connected to the host computer through the RS232 RS485 interface.

3. Intelligent control and data processing function.

1) Data dumping: After the detection is over, the collected data can be transferred to the U disk;

3) Data processing software function: data processing software is used with the detector. The detection parameters can be set to analyze and process the electrical parameters, operating status and abnormal records detected by the detector; Intelligent query, display and print charts.

4) Automatic detection can be realized by setting the parameters of the detection equipment.

4. Parallel function.

The same type of products can be paralleled, the equipment is equipped with RS485 digital parallel interface, which is uniformly controlled by the host to record the detection process.

5. Shutdown protection function.

On the basis of the general AC false load and load box, an intelligent control system is added, which can be used to set the protection of the phase of lack of brightness and brightness, over-voltage and under-voltage, once the parameters detected by the equipment exceed the set parameters, the equipment will send out an audible alarm and automatically shut down for protection.