Purchasing process of diesel generator set
2021-11-04
When purchasing diesel generator sets, customers are most concerned about the quotation of diesel generator sets. Generator sets can be divided into many kinds according to brand, and the quotation of generators for different diesel engine power equipment is also different. The manufacturer of diesel generator sets will introduce you how to compare the quotation of diesel generator sets.
First, ask about the purchase time, purpose and sales factors of the diesel engine, the repair situation in the past, which primary components have been replaced, and what problems exist in the application, so as to have a better understanding of the old diesel engine system.
Second, look at the signs and surfaces of the old diesel engine. See which factory produced it, when it was produced, and how long it is from now; See whether the paint on the surface has fallen, whether the parts are incomplete, whether the model has been screened, etc. Distinguish the old and new degree of the old diesel engine from the label and surface.
Third test, test the engine, and carefully check the old diesel engine by turning the crankshaft, pulling the flywheel, starting the machine, etc. Commissioning is a very important step. The detailed viewing process is as follows:
1. Crank the crankshaft to supply oil to the fuel injection nozzle. If the fuel injection nozzle makes a clear sound, it shows that the auxiliary functions of the fuel injection nozzle and plunger are excellent; If there is no abnormal sound such as "Hua" in the wheel chamber, it indicates that the wear of the gear is not severe.
2. Pull the flywheel up and down. If there is no sound, it indicates that the gap between the crankshaft main shaft and the bearing bush is small.
3. Turn the flywheel to make the piston close to the bottom dead center, and then shake the flywheel. If there is no "clatter", it indicates that the wear between the connecting rod shaft stem and the Bush is not severe.
4. Depressurize the cylinder and rotate the crankshaft. When the depressurization is removed, if the rebound of the piston is large, the flywheel rotates rapidly, indicating that the wear degree of the cylinder, piston and piston ring is small. When cranking the crankshaft, the pointer of the oil pressure gauge should not be lower than 1 or the oil indicator red mark can rise quickly, so the hand pressure is hard.
5. Start the machine. If it is easy to start, the smoke exhaust is colorless or light gray, and the speed is stable without noise, it illustrates that the skill of the old diesel engine is good.
Fill in white: for the test process of diesel generator set, it is best to conduct and monitor the changes of air pressure, oil pressure and other data in the diesel generator controller. Therefore, the requirements for the quality stability and humanization of the diesel generator controller are very high.
Guangxi laines Industrial Co., Ltd. is specialized in the production, sales, installation and maintenance of diesel generator sets. It has its own plant and office building, with an annual production and design capacity of more than 10000 diesel generator sets.
The company has negotiated with Cummins, MTU, DEUTZ, Daewoo, Wudong, inger and other famous multinational companies and manufacturers of engines and generators at home and abroad to establish a long-term, solid and friendly strategic partnership, so as to provide a continuous and high-quality power supply source for all mechanical engineering, chemical industry, mining, factories, hotels, business clubs and other enterprises with tight power resources, Solve the worries of production development!
First, ask about the purchase time, purpose and sales factors of the diesel engine, the repair situation in the past, which primary components have been replaced, and what problems exist in the application, so as to have a better understanding of the old diesel engine system.
Second, look at the signs and surfaces of the old diesel engine. See which factory produced it, when it was produced, and how long it is from now; See whether the paint on the surface has fallen, whether the parts are incomplete, whether the model has been screened, etc. Distinguish the old and new degree of the old diesel engine from the label and surface.
Third test, test the engine, and carefully check the old diesel engine by turning the crankshaft, pulling the flywheel, starting the machine, etc. Commissioning is a very important step. The detailed viewing process is as follows:
1. Crank the crankshaft to supply oil to the fuel injection nozzle. If the fuel injection nozzle makes a clear sound, it shows that the auxiliary functions of the fuel injection nozzle and plunger are excellent; If there is no abnormal sound such as "Hua" in the wheel chamber, it indicates that the wear of the gear is not severe.
2. Pull the flywheel up and down. If there is no sound, it indicates that the gap between the crankshaft main shaft and the bearing bush is small.
3. Turn the flywheel to make the piston close to the bottom dead center, and then shake the flywheel. If there is no "clatter", it indicates that the wear between the connecting rod shaft stem and the Bush is not severe.
4. Depressurize the cylinder and rotate the crankshaft. When the depressurization is removed, if the rebound of the piston is large, the flywheel rotates rapidly, indicating that the wear degree of the cylinder, piston and piston ring is small. When cranking the crankshaft, the pointer of the oil pressure gauge should not be lower than 1 or the oil indicator red mark can rise quickly, so the hand pressure is hard.
5. Start the machine. If it is easy to start, the smoke exhaust is colorless or light gray, and the speed is stable without noise, it illustrates that the skill of the old diesel engine is good.
Fill in white: for the test process of diesel generator set, it is best to conduct and monitor the changes of air pressure, oil pressure and other data in the diesel generator controller. Therefore, the requirements for the quality stability and humanization of the diesel generator controller are very high.
Guangxi laines Industrial Co., Ltd. is specialized in the production, sales, installation and maintenance of diesel generator sets. It has its own plant and office building, with an annual production and design capacity of more than 10000 diesel generator sets.
The company has negotiated with Cummins, MTU, DEUTZ, Daewoo, Wudong, inger and other famous multinational companies and manufacturers of engines and generators at home and abroad to establish a long-term, solid and friendly strategic partnership, so as to provide a continuous and high-quality power supply source for all mechanical engineering, chemical industry, mining, factories, hotels, business clubs and other enterprises with tight power resources, Solve the worries of production development!