operations of marine auxiliary boiler 机电系: 叶 晓 华
TRANSCRIPT
Operations of Marine Auxiliary Boiler Operations of Marine Auxiliary Boiler
机电系: 叶 晓 华
船舶辅机教研室船舶辅机教研室
Course introductionCourse introduction
Course Type: practice course
Time : 7 hours
Students: the third grade
船舶辅机教研室船舶辅机教研室
The Main ContentThe Main ContentThe Main ContentThe Main Content
Main Content Time
1 Basic principle and construction 1 hour
2 Operations introduction 1.5 hours
3 Operations practice 4 hours
4Sum up the main points of the lesson
half an hour
船舶辅机教研室船舶辅机教研室
Question: Please list the use of marine boilers
[Auxiliary/Donkey Boiler] : producing Superheated Ste
am( 过热蒸汽 ) and Saturated Steam ( 饱和蒸汽 )to drive auxiliary machinery,to heat fuel oil,lube oil,flesh water, or for air conditioner and daily use.
Basic principle and construction Basic principle and construction
[Main Boiler] : producing Superheated Steam( 过热蒸汽 ) to drive main engine.
船舶辅机教研室船舶辅机教研室
一, Basic Types1.According to the heat source
[Exhaust Boiler ] :from main engine exhaust gas
[oil-burning Boiler]:from combustion
Question: As we know,there is an exhaust boiler on board.why do we still need an oil-burning bioler?
船舶辅机教研室船舶辅机教研室
一, Basic Types
2.According to the structure
[Smoke-tube Boiler]
[Water-tube Boiler]
[Mixed-type Boiler]
船舶辅机教研室船舶辅机教研室
3. According to the water circulation
[Natural Circulating Boiler] : The power of water cycle is from density difference.
[Forced Circulating Boiler] : The water cycle is due to pumps.
一, Basic Types
船舶辅机教研室船舶辅机教研室
Question:which level is higher,the level in water gauage or the steam drum level?
Downcomer Riser
Steam Drum
Water Drum
the natural water cycle principlethe natural water cycle principle
船舶辅机教研室船舶辅机教研室
1.Smoke-tube Boiler
二, Consturction
burnerfurnace
combustion chamber
smoke box
funnel
船舶辅机教研室船舶辅机教研室
To ensure that oil mist from the atomizer can mix a certain air (10~30%)
To supply the most air for combustion(70~90%)
一次风 二次风[Primary Air]
[Secondary Air]
Atomizer
Air Diffuser
Burner[ 燃烧器 ]
船舶辅机教研室船舶辅机教研室
Flame Sensor[ 火焰感受器 ]
Forced Draught Fan[ 风机 ]
Sight Glass[ 观察镜 ]
船舶辅机教研室船舶辅机教研室
Damper[ 风门 ]
Oil Supply Line[ 供油管 ] Oil Return
Line[ 回油管 ]
Servomotor for Air Regulator[ 风量调节伺服电机 ]
船舶辅机教研室船舶辅机教研室
Oil Pump[ 油泵 ]
Solenoid Valve[ 电磁阀 ]
船舶辅机教研室船舶辅机教研室
2.water-tube boiler
1-Steam Drum[ 汽包 ]2-Water Drum[ 水筒 ]
3-Water Wall Header4-Furnace5-Water wall
6 、 7-Generating tubes8 、 9-downcomer
10-Burner11-Superheater
1700oC
1100oC
船舶辅机教研室船舶辅机教研室
三、锅炉附件 [Boiler Mountings]
Certain fittings are necessary on a boiler to ensure its safe operation. They are usually referred to as Boiler Mountings. The mountings found on a boiler are:
船舶辅机教研室船舶辅机教研室
Water Level Indicators(Water Level Gauage)
船舶辅机教研室船舶辅机教研室
船舶辅机教研室船舶辅机教研室
Safety Valves
船舶辅机教研室船舶辅机教研室
Automatic feed water regulator 自动给水调节器
control modes : two-position control proportional control
船舶辅机教研室船舶辅机教研室
Main steam stop valve 主停汽阀
Auxiliary steam stop valve 辅停汽阀
Air release valve 放气旋塞
Sampling Connection 取样接头
Blow down valve 泄放阀 ( 下排污阀 )
Scum valve 除渣阀 ( 上排污阀 )
Sootblower 吹灰器
The Other Boiler Mountings
船舶辅机教研室船舶辅机教研室
To Sum Up
Marine auxiliary boiler is an important plant.Its structure is very complex .It will take us a long time to learn to operate it.
船舶辅机教研室船舶辅机教研室
Thanks a lot for your listen!