1. The structure of the diesel engine fire pump.
The diesel engine fire pump is mainly composed of diesel engine, fire pump, cooling system, lubrication system, fuel system, exhaust system, starting system and control system.
Diesel engine: It is the power source of the fire pump, which generates power by burning diesel.
Fire pump: It is the output equipment of the diesel engine, which converts the power of the diesel engine into the flow power of the liquid.
Cooling system: It is used to cool the diesel engine and prevent the diesel engine from overheating.
Lubrication system: It is used to provide lubricating oil to the moving parts of the diesel engine to reduce wear.
Fuel system: used to store and transport diesel fuel for diesel engine combustion.
Exhaust system: used to discharge the exhaust gas after the combustion of the diesel engine.
Starting system: used to start the diesel engine.
Control system: used to control the operating state of the diesel engine.
Second, the operating principle of diesel engine fire pump.
The operating principle of the diesel engine fire pump is mainly to drive the fire pump through the diesel engine. When the diesel engine is started, the diesel in the combustion chamber is ignited, generating high temperature and high pressure gas, pushing the piston to do reciprocating motion, and converting this reciprocating motion into rotary motion through the connecting rod and crankshaft to drive the fire pump to work.
When the fire pump is working, it sucks in the liquid from the suction inlet, and through the rotation of the impeller, the liquid obtains energy, and then discharges it from the discharge port. This process is the flow process of liquid, and it is also the working process of the fire pump.
3. Judgment and analysis of common faults of diesel engine fire pumps.
The diesel engine cannot start: it may be that the battery is insufficient, or the fuel system or starting system is faulty. You need to check the battery level, or check whether the fuel system and starting system are normal.
The fire pump is not working properly: it may be that the internal parts of the fire pump are worn, or the inlet and outlet of the fire pump are blocked. It is necessary to check whether the internal parts of the fire pump are worn out, or to clean the inlet and outlet of the fire pump.
Diesel engine overheating: It may be that the cooling system is faulty and cannot cool the diesel engine properly. You need to check if the cooling system is working properly.
Oil pressure too low: It may be that the lubrication system is faulty and the lubricating oil is not working properly. It is necessary to check whether the lubrication system is working properly.
Excessive exhaust fumes: It may be incomplete combustion, or a malfunction of the exhaust system. It is necessary to check the combustion, or to check if the exhaust system is normal.
The above is the structure, operating principle and common fault judgment analysis of diesel engine fire pump, I hope it will be helpful to you.