1. Main structure of the biogas generator setBiogas generator sets
include biogas-fueled reciprocating internal combustion engines,
alternators, electrical parts, control devices, cooling systems,
lubrication systems, exhaust systems, fuel systems, and auxiliary
equipment. Except for the exhaust pipe and silencer of the exhaust
system, they are mounted on a steel chassis. The generator set
is a fixed permanent installed generator set. The steel
underframe is mounted to the concrete foundation.2. Main structure
of the biogas engineT12 high-tech biogas engine is the national 863
program project production. It is a domestic leading level
natural gas engines with new generation of electricity, rare field
combustion and four valves. Based on STEYR technology the engine is
designed and developed by SINOTRUK with the EControls company and
has complete intellectual property rights. It has the
characteristics of low gas consumption, low exhaust temperature,
good reliability and low maintenance cost. 3. AlternatorThe
brushless constant-voltage synchronous alternators are of the
self-excited type with an electronic voltage regulator integrated
in the excitation system. They are used as main or standby units in
land based power installations and for ships' electrical systems
and can be driven by internal combustion engines or gas, steam and
water turbines and electric motors.Structure: The alternator
comprises the main machine exciter and excitation system. The main
machine is of revolving magnetic field with cylindrical rotor and
damper winding. The exciter is revolving armature machine. The
exciter power is supplied to the rotor of the main machine via
rotating rectifiers.4. Genset control panelThe control panel
adopted Harsen controller and can detect the current, voltage,
speed, frequency, power, engine cooling water temperature, engine
oil pressure, exhaust temperature, number of starts, running time,
etc. of the unit. The screen also designed a variety of
necessary protections for the generator set to ensure safe and
stable operation of the unit. The main protections include high
water temperature, low oil pressure, overspeed, high temperature,
over voltage, under voltage and low frequency. The control panel
provides DC power switch, emergency stop button, and unit fault
alarm indication.The automatic generator set adopts automatic
control system, which can realize self-starting, self-regulating,
self-adjusting frequency, automatic load-carrying, automatic fault
alarm, automatic control, etc., to achieve digital management, the
generator is always ready to start, the main power supply is cut
off or When the fault occurs, the standby unit starts immediately
and is put into the load operation at 15S. The unit is interlocked
with the external power. The automatic switching between the mains
and the standby unit is realized through the ATS of the Party A.
When the utility power is restored, the standby unit exits and
enters the shutdown process. When the startup is unsuccessful for
3 consecutive times, it can issue a startup failure
alarm, and automatically stop when the unit fails, and provide
alarm signal information.5. Parameter table
CM170S12B biogas generator setGenset modelCM170S12BEngine
modelSinotruk T12Alternator modelHenjo or
equivalentControllerDEIFMax power200kwContinuous output170kwRated
voltage400VPower factor0.8 (lagging)Rated frequency50HzRated
speed1500rpmSteady state voltage regulation rate≤±2.5%Stabilization
time≤1.5sTransient state voltage regulation rate≤ ±20%Fluctuation
rate≤±0.5%Steady state frequency regulation rate≤0-5%
(adjustable)Stabilization time≤5sTransient state frequency
regulation rate≤±10%Fluctuation rate≤±0.5%Starting method24V DC
startVoltage regulating methodAVR (Automatic voltage
regulation)Speed governing methodElectronic governorIgnition
systemDigital ignition systemCooling mehtodForced water cooling
with multi-fans radiatorCoupling methodFlexible couplingReference
dimension 3060x1300x1605mm (the drawing will be presented
after signing of contract)Reference weight2500kg Biogas engine
dataModelSinotruk T12Engine typeFour strokes, spark plug ignited,
water cooled, turbocharged and inter-cooledCylinder arrangement6 in
lineBore126mmStroke 155mmDisplacement11.596LRated
speed1500rpmCompression ratio11:1Design combustion typeLean
combustionAir to fuel gas ratio
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