Presentation on theme: "Operations of Marine Auxiliary Boiler 机电系： 叶 晓 华."— Presentation transcript:
Operations of Marine Auxiliary Boiler 机电系： 叶 晓 华
船舶辅机教研室 Course introduction Course Type: practice course Time : 7 hours Students: the third grade
船舶辅机教研室 The Main Content Main ContentTime 1Basic principle and construction1 hour 2Operations introduction1.5 hours 3Operations practice4 hours 4 Sum up the main points of the lesson half an hour
船舶辅机教研室 Question: Please list the use of marine boilers [Auxiliary/Donkey Boiler] ： producing Superheated Steam ( 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 [Main Boiler] ： producing Superheated Steam ( 过热蒸 汽 ) to drive main engine.
船舶辅机教研室 一， Basic Types 1. 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 一， Basic Types 2. According to the structure [Smoke-tube Boiler] [Water-tube Boiler] [Mixed-type Boiler]
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 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 principle
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 ]