Group Admins
Diesel generator set product technology development status
Public Group active 3 months agoIn order to ensure the unit to achieve the auto scanner, unit design and manufacturing diesel engines and generators must make a good match, which includes the power and speed. Diesel power diesel engine can achieve effective power to rated speed for 12 hours of normal operation. The power of the synchronous generator is rated power at rated speed, long-term continuous operation on the output terminal. Usually diesel engine rated power (hp) synchronous generator rated power (kW) is called match ratio. The general requirements in the unit used in the plains to the matching ratio was 1.6:1; for mobile power plants require a higher match than take 2:1. Speed matching requirements are very strict. Have a close relationship between the speed and the unit of power, frequency, voltage, thus requiring the matching of the diesel engine and generator must have good performance and reliable work of the governor to ensure that in a relatively short period of time the generator to It’s rated speed and stable operation, but also be able to meet the load requirements on the governor changes.
The unit operating diesel generator sets can be a diesel generator unit operation can also be multiple parallel operation and incorporated into the power system operation. Single unit run by many constraints: its power to meet the requirements of the overloaded conditions, light load operation will reduce the unit running economy, and the standby unit, also with the running capacity of the units. Parallel operation of multiple units and the grid to run the expansion of supply capacity and improve reliability of electricity supply, a standby unit to the relative reduction in the capacity of the standby unit. To achieve parallel operation must meet the following four conditions: ① terminal voltage equal; ② the same frequency; the ③ phase; ④ phase sequence consistent. Also, run protection devices, can automatically rational allocation and adjustment of active power and reactive power, the unit between the FM characteristics and surge characteristics curve tends to close.
Due to multi-national water and electricity meat processing machine with a serious shortage of electricity limited to a certain extent, but in recent years is the period of rapid development of China’s industrial economy, many companies have ramped up into mass production; followed by the first two years many manufacturers to buy generator is no long-term plans for emergency response, in the time of purchase, and the overtaken purchased a small generator can not adapt to new demands in this case, the replacement of the generator also accounted for a large part; Furthermore exports of machinery and electronic products each year in increments, water pumps and generators in the market space in recent years will be great. It is in the promotion of the three factors, the Hardware City, water pumps and generators market once again usher in a new development opportunities.
In the cylinder of the diesel generator set, meat processing equipment jet of clean air after the air cleaner filter and nozzle atomization diesel full hybrid, the diesel generator set piston upward extrusion, the volume is reduced, the temperature rapidly increased, reaching the ignition point of diesel. Diesel fuel was ignited, severe burning of the gas mixture, the rapid expansion of volume, to promote the piston downward, known as the ‘power’. Each cylinder of the diesel generator set according to a certain order of power, the thrust acting on the piston after the rod has become a force driving the crankshaft, so as to drive the crankshaft rotation. Such diesel generators to complete one work cycle.
As one after another working cycle is repeated, continuous operation of diesel generator sets. The core of the engine control is by controlling the fuel injection pump to regulate and stabilize the speed, usually divided into mechanical governor electronic governor. The electronic governor double-loop control with speed sensor to detect the electric dry iron, the test results into proportional electrical signals, with a given standard speed signal obtained error signal, with the implementation of the diesel generator set The position feedback signal is the sum of the synthesized signal as the input signal to the actuator movement by controlling the diesel generator set fuel injection pump gear lever position to regulate the fuel supply, so as to achieve the goal of the governor steady speed. Foreign diesel engine refers to the advanced engine fuel injection control technology in load characteristics, fuel savings and environmental emissions and reduce noise and other aspects of performance excellence. Active adjustment of the generator set diesel generator speed regulation.
-
qingrenjie created the group
Diesel generator set product technology development status 3 months ago
