The people above are all talking nonsense.
How much power a diesel engine should be used depends on the torque of the two machines. Only large torque can drive small torque machines.
For example, a 50 kW motor at 1000 rpm can be driven by a 50 kW motor at 800 rpm. But it can't turn that fast. However, couplings and gearboxes can be used to adjust the speed, and the generator can be loaded to full load.
But if the generator is 50 kW, 100 rpm, and the diesel engine is 100 kW, 300 rpm, regardless of the gearbox used, there is no way the generator operates at full load, because the latter has less torque. than the first and cannot produce a power of 50 kW.
Remember, look at torque, not horsepower. Power is power. Torque and speed are both related.
Weichai engine starter
1. ?
2. Basis of preparation. ?
3. Preparing for construction.
4. Configuration of personnel and mechanical equipment and construction arrangements.
(1) Staffing.
(2) Main construction equipment configuration table.
5. Construction plan.
(1) Construction preparation.
(2) Construction schedule arrangement.
(3) Construction technology and methods of connecting beams.
The start and finish mileage of Hubei Expressway Division 1 is K42+907.5~K49+328, with a length of 6.42 km. The line passes through Mengxi Town and Nanping Town, Gongan County, Jingzhou City, Hubei Province. Our branch has a total of 1 hot spot, located on the left side of the 10th line in Jinma Village and 80m from the nearest point on the line. A noise barrier is designed at the sensitive point. The length of the noise barrier designed toThis platform section is 300m, and the starting and ending mileage on the left side is K46+780 ~ K47+080.
The height of the platform noise barrier is 3.015m, and the foundation part adopts φ140 steel pipe pile foundation. The steel pipe is 2.8m long, the spacing is 2.1m, and the penetration depth is 2.5. mr. The upper part is cast with connecting beams and columns, using a C20 reinforced concrete structure. The top of the connecting beams and between the columns are constructed with sound-absorbing bricks, and expansion joints are provided every 30 m, making a total of 29.
There are four Main steps to start the starter of Weichai 50 kW generator set:
1 Open the main compressed air rotary valve to allow compressed air to flow. enter the starting pipeline inside.
2. Press the air switch and pAutomatically re-supply oil to the pump via the system linkage program. Drive the air motor to run and complete the starting process.
3. The air motor should not run continuously for more than 15 seconds each time it is started. If it cannot be started at the same time, it can be restarted after an interval of 2 minutes. If starting cannot be accomplished after three attempts, the cause of the fault must be found and the engine must be restarted once the fault has been cleared.
Note: Due to system failure, if it is found that the pump oil is not pre-supplied or the pump oil pressure is insufficient when starting, and the air motor is started immediately before starting work, starting should be stopped immediately. checkFind the cause of the fault and eliminate it before starting.
4. After starting, the buttonThe start must be released immediately to avoid damage to the air motor. Diesel engine operation refers to the entire working phase from start to stop.
The following operating procedures are safe:
1. For generators powered by diesel engines, the operation of the engine part must be carried out in accordance with the regulations in force for internal combustion engines. .
2. Before starting the generator, you should carefully check whether the wiring of each part is correct, whether the connecting parts are firm, whether the brushes are normal, whether the pressure meets the requirements, and whether the ground wire is in good condition .
3. Before starting, set the resistance value of the excitation rheostat to the maximum position, turn off the output switch and the generator set with clutch should disengage the clutch. First start the diesel engine without load, then startthe generator once it is working properly.
4. After the generator is started, you should always pay attention to the occurrence of mechanical noise, abnormal vibration, etc. After confirming that the situation is normal, set the generator to rated speed and voltage to rated value, then close the output switch to supply power externally. The load must be increased gradually to seek three-phase balance.
5. Parallel operation of generators must meet the conditions of same frequency, same voltage, same phase and same phase sequence. 6. The generators to be operated in parallel must all be in normal and stable operation.
7. After receiving the “Prepare parallel connection” signal, adjust the speed of the diesel engine according to the whole device and close it at the synchronization moment.
8. Generators operating in parallel mustent adjust the load reasonably and evenly distribute the active power and reactive power of each generator. Active power is adjusted via the diesel engine throttle and reactive power is adjusted via excitation.
9. When the generator is running, you should pay close attention to the sound of the engine and observe whether the indications of various instruments are within the normal range. Check whether the running parts are normal and whether the generator temperature rise is too high. And keep setting records.
10. When stopping, first reduce the load, restore the excitation rheostat to reduce the voltage to the minimum value, then turn off the switches in sequence, and finally stop the diesel engine.
11. If a diesel engine operating in parallel must be stopped due to a load drop, the load of the generator which is to be stopped must first betransferred to the generator which continues to operate, then the load from the generator which is to be stopped must be transferred to the generator which continues to operate. Stop the generator in the same manner as the generator. If all generators need to be shut down, first shut off the load, then shut down just one generator.
12. For mobile generators, the chassis must be parked on a stable foundation before use and it is not allowed to move during operation.
13. When the generator is operating, even if it is not energized, it should be considered energized. It is prohibited to work on the rotating generator lead wire, touch the rotor with your hands or clean it. A running generator should not be covered with canvas or other objects.
14. After servicing the generator, you should carefully check whether there are tools, materials and other debris between the rotor slots and du stator to avoid damage to the generator during operation.
15. All electrical equipment in the computer room must be grounded.
16. It is prohibited to pile up debris and flammable and explosive objects in the engine room, except for personnel on duty, no one else is allowed to enter without permission.
17. The room must be equipped with the necessary fire-fighting equipment. In the event of a fire, the power supply must be immediately cut off, the generator must be turned off and carbon dioxide or carbon dioxide removed. A tetrachloride extinguisher must be used to extinguish the fire.