What are the components of a diesel generator set?

1.Frame: used to install alternator, engine and cooling system, it needs to have good shockproof performance, this is because when the diesel generator set is working, there will be a lot of vibration, therefore, the base should have a certain shockproofness.

2.Engine: The engine must be a four-stroke, intercooled supercharged diesel engine.

3.Starting system: The starting system of diesel generator set is divided into air start and 24V DC start.

4.Generator: Diesel generator sets use alternators.

5.Control system: The diesel generator set must have a control system that is easy to operate and reliable in performance.

6.Cooling system: Closed water cooling. The ambient temperature can reach 40 °C.

1. Diesel engine system.

Diesel generator is a mechanical equipment that converts the chemical energy of diesel into mechanical energy, and then converts mechanical energy into electrical energy, and its power generation principle is to drive the crankshaft of the diesel generator to rotate through other auxiliary power, so that the piston moves up and down at the top of the closed cylinder. When the piston moves from top to bottom, the cylinder intake valve opens, and the outdoor air enters the cylinder after being filtered by the air filter device to complete the intake stroke. When the piston moves from bottom to top, the intake and exhaust valves of the cylinder are closed, and under the extrusion of the piston upward, the gas volume is rapidly compressed, resulting in a rapid rise in the temperature in the cylinder to complete the compression stroke.

When the piston reaches the very top, the fuel filtered by the oil filter device is atomized and sprayed through the high-pressure fuel injector, mixed with high-temperature and high-pressure air and burned violently, at this time, the gas volume expands rapidly, and the piston is pushed down to do work. Each cylinder works in a certain order, and the thrust acting on the piston becomes the force that pushes the crankshaft to rotate through the connecting rod, thereby driving the crankshaft to rotate and complete the work stroke. After the power stroke is completed, the piston moves from bottom to top, and the cylinder exhaust valve opens to complete the exhaust stroke.

Each stroke crankshaft rotates half a turn, and after several working cycles, the diesel unit gradually accelerates the rotation under the inertia of the flywheel.

2. Synchronous alternator system.

The above process is the conversion of chemical energy and mechanical energy, so how is mechanical energy converted into electrical energy? Structurally, the synchronous alternator and the diesel generator crankshaft are coaxially installed, and the rotation of the diesel generator is used to drive the rotor of the generator to rotate, because there is remanence in the magnetic pole core of the generator, so the armature coil cuts the magnetic field lines in the magnetic field, and it can be known from the principle of electromagnetic induction, the generator will output induced electromotive force, and the current can be generated through the closed load loop.

3. Generator excitation system.

As we all know, synchronous generators require DC current excitation. The power supply and its ancillary equipment that supply the excitation current of the synchronous generator are collectively referred to as the excitation system, which is generally composed of two parts: the excitation power unit and the excitation regulator. The excitation power unit supplies the excitation current to the synchronous generator rotor, while the excitation regulator controls the output of the excitation power unit based on the input signal and the given regulation criteria.

Diesel Engine (1) Classification:

According to the cooling system: air-cooled, water-cooled, open, closed.

According to the speed regulation mode, it is divided into: mechanical concentration, mechanical hydraulic, electronic speed regulation, and electronic fuel injection.

According to the structure: in-line, V-shaped.

2. Generator.

1) Composition. Stator, rotor, excitation system, automatic voltage regulation, etc.

2) Classification. According to the presence or absence of brushes: brushed, brushless;

According to the excitation system: phase compound excitation, controllable phase compound excitation, third harmonic thyristor excitation, fundamental (auxiliary winding) thyristor excitation, pulse width modulation, permanent magnet machine thyristor excitation;

At present, brushless generators and fundamental (auxiliary winding) thyristor excitation are mainstream products. In recent years, the thyristor excitation of permanent magnet machine has begun to be accepted by the market.

3. Control system.

1) Control system function.

The monitoring and control of the working process of the diesel generator set, including the measurement and display of the working parameters of the diesel engine, the measurement and display of the generator electric power, the main circuit control of the generator output, the protection of the diesel engine and the generator and the process control of the generator set.

2) Control system classification.

According to the structure: integrated control box, split control screen.

According to the function: manual type, automatic type, parallel type (manual parallel, automatic parallel, automatic frequency modulation and load regulation).

In detail, it is mainly composed of the base, the diesel engine, the base fuel tank, the generator set (i.e. the electric ball), the controller (which plays the role of control, but also plays the role of protecting the unit), and the radiator (air cooling: fan; Water cooling: water tank), silent box and other components.

The diesel engine and the generator are composed of two parts.

Yuanyu Power 30kw diesel generator set after-sales guarantee.

Diesel generator set composition working principle explained.

It is composed of a generator and an engine, and a control system, a water tank, and a unit frame are also installed. Assemble the individual components into a generator set.

Diesel engines, generators, controllers. Other components: base, base fuel tank, radiator, water tank, recoil pad, sound box, silencer, silent box and other components.

The diesel generator set is composed of the following parts:

Generator: A generator is a mechanical device that converts other forms of energy into electrical energy, which is driven by a water turbine, steam turbine, diesel engine or other power machinery, converting the energy generated by water flow, air flow, fuel combustion or atomic nucleus fission into mechanical energy and transferring it to the generator, which then converts it into electrical energy.

Diesel engine: Generally, a supercharged central control intercooled diesel engine is used to drive the generator to run and generate current!

Control system: The control system of the generator is like the brain of the generator, which is used to control the start, shutdown, important parameter measurement, fault alarm, or shutdown protection and other functions of the generator, the use of intelligent control system will greatly improve the operation of the diesel generator set, ensure the stable work of the diesel generator set, save manpower and material resources, and improve work efficiency.

Starting system: The starter, also known as the motor, converts the electrical energy of the battery into mechanical energy and drives the engine flywheel to rotate to realize the start of the engine.

Cooling system: Generally, the diesel engine manufacturer is equipped with a water tank, and the standard is an air-cooled closed water circulation water tank, and the ambient temperature is 40.

Chassis: Generally, the generator set refers to the open frame generator set, and the required base is used to fix the generator set and absorb the vibration generated during the operation of the generator set!

Diesel generator is a kind of small power generation equipment, which refers to the power machinery that uses diesel as fuel and diesel engine as the prime mover to drive the generator to generate electricity. The whole unit is generally composed of diesel engine, generator, control box, fuel tank, starting and control battery, protection device, emergency cabinet and other components.

The general power of diesel generator sets is from 8 to 2000kw, and the brands of diesel generators include Cummins generators, Perkins generators, Volvo generators, Yanan generators, Yuchai generators, Weichai generators, Shangchai generators and other brands. Generally, diesel generators include stationary generators, mobile generators, silent generators, containerized generators and other styles.

When the owner chooses the generator set, the basis for reference is: the amount and power of the electrical equipment, the environmental requirements for the use of diesel generators, the requirements for the automation level of diesel generators, the owner's budget, etc. The generator set purchased according to the actual needs is the appropriate generator set.

With the development of industry, generator sets as emergency backup power supply has become indispensable, what need the owners to pay attention to when purchasing emergency generator sets?

1. The rated power of the generator set is kva and kw, but 1kw =, that is, the power of the 500kva genset is 400kw.

2, to refurbished machine or second-hand pretending to be a new machine, brand diesel engine has a unique serial number in the world, the owner bought the generator set, you can check these serial numbers on the Internet, refurbished machine or second-hand phone will definitely appear use information.

3. The generator set uses inferior or unqualified raw materials.

The main components of a diesel generator set are: diesel engine, generator, water tank radiator, controller and steel base.

Eurolion power generator set consists of: diesel engine, motor, oil tank, fuel tank, water tank, cooling fan, base, wheels, control panel, output panel, aviation plug, start key, circuit breaker, power distribution cabinet, sound insulation cotton, silencer device, silent box, all-round protection system, heat dissipation system, remote control system, etc.!

Diesel generator sets are mainly composed of diesel engine, generator, chassis, water tank, control panel, control module, floating charger, battery, exhaust system, muffler, inlet and return oil pipe, shock absorbing pad, battery connection line, random data, oil-water separator and other parts.

Diesel engines, generators, controllers. Other components: base, base fuel tank, radiator, water tank, recoil pad, sound box, silencer and other components.

There is an engine generator assembled.

The diesel generator set is mainly composed of three parts: diesel engine, generator (i.e., electric ball) and controller.

Composition of diesel generator set:

Diesel generator set is a kind of power generation equipment with diesel as the main fuel, and the diesel engine is used as the driving force to drive the generator (i.e. electric ball) to generate electricity, and convert kinetic energy into electrical energy and heat energy. The whole set of diesel generator set is mainly divided into three parts:

1. Diesel engine.

2. Generator (i.e. electric ball).

3. a controller.

Subdivided: base, diesel engine, base fuel tank, generator set (i.e. electric ball), controller (plays the role of control, but also plays the role of protecting the unit), radiator (air cooling: fan; Water cooling: water tank), silent box and other components.

The basic structure of diesel generator set: diesel engine and generator, diesel engine as the power to drive the generator to generate electricity. (For reference only: Yanan Diesel Generator Answer: 4000-080-999).

Let's talk about the basic structure of the diesel engine first: it is composed of cylinders, pistons, cylinder heads, intake valves, exhaust valves, piston pins, connecting rods, crankshafts, bearings and flywheels and other components. The diesel engine of the diesel generator set is generally a single-cylinder or multi-cylinder four-stroke diesel engine, and I will only talk about the basic working principle of the single-cylinder four-stroke diesel engine

Diesel engine starting is to rotate the diesel engine crankshaft by manpower or other power, so that the piston reciprocates up and down in the cylinder closed at the top. The piston makes four strokes in motion: intake stroke, compression stroke, combustion and work (expansion) stroke, and exhaust stroke.

When the piston moves from top to bottom, the intake valve opens, and the fresh air filtered by the air filter enters the cylinder to complete the intake stroke. The piston moves from bottom to top, the intake and exhaust valves are closed, the air is compressed, and the temperature and pressure are increased to complete the compression process. When the piston is about to reach the apex, the injector sprays the filtered fuel into the combustion chamber in the form of a mist and mixes it with the air of high temperature and high pressure to ignite and burn it immediately, and the high pressure formed pushes the piston to work downward, promotes the crankshaft to rotate, and completes the work stroke.

After the work stroke is finished, the piston moves from the bottom to the top, and the exhaust valve opens to exhaust the exhaust to complete the exhaust stroke. Each stroke crankshaft rotates half a turn. After several duty cycles, the diesel engine gradually accelerates into work under the inertia of the flywheel.

See the image above).

The rotation of the diesel engine will drive the generator to rotate.

DC Generator:

DC generators are mainly composed of generator shells, pole cores, magnetic field coils, armatures and carbon brushes. Working power generation principle: when the diesel engine drives the generator armature to rotate, due to the remanence of the magnetic pole core of the generator, the armature coil cuts the magnetic field lines in the magnetic field, and according to the principle of electromagnetic induction, the current is generated by the magnetic induction and the current is output through the carbon brush.

Alternator:

The alternator is mainly made of magnetic materials, with a permanent magnet (called a rotor) arranged alternately with multiple north and south poles, and an armature coil (called a stator) made of silicon cast iron and wound with multiple sets of series coils. Working power generation principle: the rotor is driven by the diesel engine to cut the magnetic field lines axially, the alternating magnetic field is formed in the core of the alternating magnetic pole circle in the stator, the rotor rotates once, the direction and magnitude of the magnetic flux change many times, due to the transformation of the magnetic field, the induced current of the size and direction of the change will be generated in the circle and the current is transmitted by the stator coil.

1. The composition of the operating system: electronic speed regulation mechanism or mechanical speed regulation, starting motor, throttle cable system. Function: When the motor starts, the solenoid valve pulls the governor throttle to the appropriate position, supplies oil to the cylinder for combustion, and makes the cylinder catch fire and rotate.

2.The composition of the charging system: charger and regulator. Function: The electrically started engine generally has charging equipment for the battery to be replenished and charged in time after discharge.

3.The composition of the fuel system: the governor can be divided into the following according to its working principle

Centrifugal, pneumatic, hydraulic. The most common is centrifugation. What it does:

When the diesel generator set is working, its load is changing, which requires the output power of the generator set to increase or decrease accordingly. In addition, the frequency of power supply is required to be stable, which requires the speed of the diesel engine to remain stable when working. Therefore, the general diesel engine is equipped with a governor.

4. Composition of lubrication system: lubricating oil pump, lubricating oil filtration device, lubricating oil cooling device, lubricating oil pipeline. What it does:

Lubricating oil is supplied to the friction surface to reduce friction resistance, reduce the wear of the parts, and partially cool the friction parts; cleaning and cooling of abrasive surfaces; Improve the sealing performance between the piston ring and the cylinder wall; It has an anti-rust effect on all moving parts.

5. The composition of the cooling system: pump, radiator (water tank), fan, water distribution pipe, body, water jacket in the cylinder head, and thermostatic valve. Function: Absorb the heat of the high-heat parts and dissipate it into the atmosphere.

6. Composition of intake and exhaust system: valve assembly, valve transmission assembly. Function: The air intake and exhaust process is realized through the valve mechanism, so that the fresh air is filled into the cylinder in time and the exhaust gas is discharged from the cylinder in time.

7. The function of the intake booster system: the exhaust gas vortex pressurization is to use the exhaust gas energy discharged from the diesel engine to drive the supercharger, compress the air and then transport it into the cylinder. The purpose of pressurization is to increase the amount of air entering the cylinder, increase the air density in the cylinder under the same volume of the diesel engine, so that the diesel engine can burn more diesel to increase its output power, which is the most economical and effective method.