CN106567774A - 一种船舶的高效动力系统 - Google Patents
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Abstract
本发明公开了一种船舶的高效动力系统,属于机械设备领域,包括储油罐、发生器、船舶发动机和发动机余热装置,所述储油罐上设有进油管和出油管,所述出油管通过送油管与发生器相连,所述发生器中央设有散热盘管,散热盘管正下方设有空气分配器,所述散热盘管通过余热管道和回流余热管道与发动机余热装置相连,所述发动机余热装置通过循环水管道与船舶发动机相连,所述发生器上设有燃气出气管道,所述燃气出气管道与船舶发动机内部相连。本发明整体构造简单,工作稳定,供气效率高,造价低廉,使用寿命长,又能很好的降低整机的设备尺寸,使用方便,易于推广。
Description
技术领域
本发明属于机械设备领域,具体涉及一种船舶的高效动力系统。
背景技术
船舶的动力系统是船舶最主要的技术部分,其性能不仅直接影响船舶运输效率,而且关系到人类生存环境。由于当今船舶普遍使用重油或柴油,所以船用动力系统革新和新能源替换在所难免。但由此也引发了船东及造船市场的烦恼,目前改造和新建燃气动力船舶主要以LNG作为动力燃料,受LNG燃料储存及使用标准限制,现有技术存在如下问题和缺点:(1)LNG主要成分是液态甲烷,沸点-161.5℃,闪点-188℃。LNG在冲装和储存中泄露的极冷介质会引起船舶甲板金属“冷脆”,而产生结构坍塌事故。(2)LNG属于液化的易燃气体,作为船舶动力燃料使用时,需大量储存。LNG在船舶上储存需要满足更高的消防要求,要有足够空间来保证其安全间距,这对于有限的船舶空间来说无疑是不可行的。(3)LNG的储存罐现有技术基本安置于船舶的上层甲板上,这对于储存罐及辅助设施的质量、安全及技术要求极高。为防止LNG气化和泄漏,储存罐必须采用双层不锈钢真空罐,管道、减压撬等辅助设施加装防爆层,整机造价过高。
发明内容
本发明旨在提供一种船舶的高效动力系统。
本发明通过以下技术方案来实现:
一种船舶的高效动力系统,包括储油罐、发生器、船舶发动机和发动机余热装置,所述储油罐上设有进油管和出油管,所述出油管通过送油管与发生器相连,所述发生器中央设有散热盘管,散热盘管正下方设有空气分配器,所述散热盘管通过余热管道和回流余热管道与发动机余热装置相连,所述发动机余热装置通过循环水管道与船舶发动机相连,所述发生器上设有燃气出气管道,所述燃气出气管道与船舶发动机内部相连。
进一步的,所述送油管上设有送油电磁阀。
进一步的,所述发生器外部还设有鼓风机,所述鼓风机通过空气管道与发生器内的空气分配器相连。
进一步的,所述余热管道上还设有管道泵和流量阀。
进一步的,所述燃气出气管道上依次设有出气阀门、稳压阀门和进气电磁阀。
进一步的,所述储油罐内还设有增压泵。
进一步的,所述循环水管道用于循环收集船舶发动机的热量,并暂留于发动机余热装置中。
进一步的,所述发生器的内部侧壁上还设有超声波发射装置。超声波发射装置的设置可促进空气泡的形成、聚集,促进气相蒸发的速度,又利于热量的均化,提升了整体的工作效率。
进一步的,所述散热盘管和空气分配器由不锈钢材料制成,其表面需要进行特殊的处理,具体包括如下步骤:
(1)水洗:用去离子水对待加工工件进行冲洗,洗去杂质后备用;
(2)脱脂:将步骤(1)处理后的工件放入脱脂液中,浸泡处理20~25min后取出备用;所述脱脂液由如下重量份的物质组成:5~7份三聚磷酸钠、3~4份硝酸钠、2~4份钼酸钠、2~3份葡萄糖酸钠、6~8份平平加、4~6份壬基酚聚氧乙烯醚、2~3份牛磺酸、1~2份脂肪醇聚氧乙烯醚硫酸钠、1~2份二乙醇胺、120~130份去离子水;
(3)水洗:用去离子水对步骤(2)处理后的工件进行冲洗后备用;
(4)碱洗:将步骤(3)处理后的工件放入0.4~0.6mol/L 的NaOH溶液中浸泡处理1.5~2.5min,取出后备用;
(5)电解:将步骤(4)处理后的工件放入电解液中电解处理15~20min后取出,电解时的电流密度为2.0~2.5A/dm2、工作电压为21~23V,所述电解液为浓度为1.6~1.9mol/L的硫酸溶液;
(6)喷涂:将混合颗粒喷涂在步骤(5)处理后的工件表面,喷涂的速度控制为1100~1200m/s;所述混合颗粒由如下重量份的物质组成:50~55份纳米二氧化钛、5~7份纳米磷酸钙、18~20份锌粉、3~5份六方氮化硼、4~7份碳化硅、2~4份聚乙烯蜡;
(7)保温干燥:将步骤(6)处理后的工件取出后先放入温度为75~80℃的条件下保温处理1~1.2h,然后对其进行干燥,干燥的温度控制为125~135℃。对散热盘管和空气分配器部件进行了特殊的表面处理后,很好的增强了其耐温、耐污和防腐性能,保证了其在液态燃油中的工作稳定性,同时经过喷涂处理后,其表面形成无数的微孔,利于空气泡的形成,提高了气相蒸发的速率,在超声波发射装置的作用下,进一步提升了其速度,进而很好的提高了整机的工作效率。
进一步的,步骤(6)中所述的混合颗粒共混粉碎后的平均粒径大小为150~170 μm。
本发明具有如下有益效果:
本发明以液态燃油作为制气原料,利用船舶双燃料发动机的余热为燃油补充热能,并混入一定比例的低压空气,以物理方式制取燃烧稳定的混空燃气,持续为船舶提供动力,改变了传统气化中需要额外消耗大量热能的方式,提高了经济效益,又利于环境保护,同时采用的制气原料在常温常压下为液态,其存储和使用标准远小于LNG的标准,泄露所造成的危害也远低于LNG,所制的燃气为混空燃气,其热值可调(6000-9600 kcal/m³),有利于船舶节能减排,降低能耗成本,同时本动力系统可直接利用油罐车灵活方便的给船只冲装燃料,而LNG侧需要在水上布点建造造价昂贵的冲装站。本发明整体构造简单,工作稳定,供气效率高,造价低廉,使用寿命长,又能很好的降低整机的设备尺寸,使用方便,易于推广。
附图说明
图1为本发明的整体结构示意图。
具体实施方式
为了对本发明做进一步的解释说明,请参阅附图。
一种油制燃气船舶动力系统,包括储油罐2、发生器6、船舶发动机20和发动机余热装置7,所述储油罐2上设有进油管1和出油管3,所述出油管3通过送油管4与发生器6相连,所述发生器6中央设有散热盘管11,散热盘管11正下方设有空气分配器15,所述散热盘管11通过余热管道8和回流余热管道12与发动机余热装置7相连,所述发动机余热装置7通过循环水管道21与船舶发动机20相连,所述发生器6上设有燃气出气管道16,所述燃气出气管道16与船舶发动机20内部相连。
进一步的,所述送油管4上设有送油电磁阀5。
进一步的,所述发生器6外部还设有鼓风机13,所述鼓风机13通过空气管道14与发生器6内的空气分配器15相连。
进一步的,所述余热管道8上还设有管道泵10和流量阀9。
进一步的,所述燃气出气管道16上依次设有出气阀门17、稳压阀门18和进气电磁阀19。
进一步的,所述储油罐2内还设有增压泵。
进一步的,所述循环水管道21用于循环收集船舶发动机20的热量,并将水暂留于发动机余热装置7中。
进一步的,所述发生器6的内部侧壁上还设有超声波发射装置22。
进一步的,所述散热盘管11和空气分配器15由不锈钢材料制成,其表面需要进行特殊的处理,具体包括如下步骤:
(1)水洗:用去离子水对待加工工件进行冲洗,洗去杂质后备用;
(2)脱脂:将步骤(1)处理后的工件放入脱脂液中,浸泡处理23min后取出备用;所述脱脂液由如下重量份的物质组成:6份三聚磷酸钠、3份硝酸钠、3份钼酸钠、2.5份葡萄糖酸钠、7份平平加、5份壬基酚聚氧乙烯醚、3份牛磺酸、1.5份脂肪醇聚氧乙烯醚硫酸钠、1.5份二乙醇胺、125份去离子水;
(3)水洗:用去离子水对步骤(2)处理后的工件进行冲洗后备用;
(4)碱洗:将步骤(3)处理后的工件放入0.5mol/L 的NaOH溶液中浸泡处理2min,取出后备用;
(5)电解:将步骤(4)处理后的工件放入电解液中电解处理18min后取出,电解时的电流密度为2.3A/dm2、工作电压为22V,所述电解液为浓度为1.8mol/L的硫酸溶液;
(6)喷涂:将混合颗粒喷涂在步骤(5)处理后的工件表面,喷涂的速度控制为1150m/s;所述混合颗粒由如下重量份的物质组成:53份纳米二氧化钛、6份纳米磷酸钙、19份锌粉、4份六方氮化硼、5份碳化硅、3份聚乙烯蜡;
(7)保温干燥:将步骤(6)处理后的工件取出后先放入温度为78℃的条件下保温处理1h,然后对其进行干燥,干燥的温度控制为130℃。
进一步的,步骤(6)中所述的混合颗粒共混粉碎后的平均粒径大小为150~170 μm。
本发明具体的工作原理为:
先将液态燃油(沸点>36℃、闪点<-18℃)由进油管1注入到储油罐2内,在增压泵的作用下,由出油管3进入到送油管4内,并通过送油电磁阀5导入发生器6内,其导入量由控制系统控制送油电磁阀5的启停来实现,此时发动机余热装置7将循环水管道21采集的拥有船舶发动机20热量的水注入到余热管道8内,并由管道泵10泵入发生器6内的散热盘管11中,进行热交换后再由回流余热管道12返回,如此反复,为其液态燃油提供循环换热式加热,其加热温度由控制系统控制流量阀10的流量来实现。在热交换时,鼓风机13将低压空气(压强不大于0.05MPa)通过空气管道14导入至发生器6底部的空气分配器15内,此时超声波发射装置22工作,在超声波以及空气流经散热盘管11和空气分配器15表面后,会形成大量的空气泡,空气泡在上升的过程中与加热后的液态燃油发生气相的蒸发,形成上升的混空燃气,进入燃气出气管道16,依次通过出气阀门17、稳压阀门18和进气电磁阀19,为其船舶发动机20提供动力燃气。
本发明系统工作稳定,效率较高,有很好的自洁、耐温和防腐性,若不对散热盘管11和空气分配器15进行特殊表面处理的状态下,系统整体的工作效率会降低25%左右,且需要经常进行清扫、维护、更换。
Claims (10)
1.一种船舶的高效动力系统,其特征在于,包括储油罐、发生器、船舶发动机和发动机余热装置,所述储油罐上设有进油管和出油管,所述出油管通过送油管与发生器相连,所述发生器中央设有散热盘管,散热盘管正下方设有空气分配器,所述散热盘管通过余热管道和回流余热管道与发动机余热装置相连,所述发动机余热装置通过循环水管道与船舶发动机相连,所述发生器上设有燃气出气管道,所述燃气出气管道与船舶发动机内部相连。
2.根据权利要求1所述的一种船舶的高效动力系统,其特征在于,所述送油管上设有送油电磁阀。
3.根据权利要求1所述的一种船舶的高效动力系统,其特征在于,所述发生器外部还设有鼓风机,所述鼓风机通过空气管道与发生器内的空气分配器相连。
4.根据权利要求1所述的一种船舶的高效动力系统,其特征在于,所述余热管道上还设有管道泵和流量阀。
5.根据权利要求1所述的一种船舶的高效动力系统,其特征在于,所述燃气出气管道上依次设有出气阀门、稳压阀门和进气电磁阀。
6.根据权利要求1所述的一种船舶的高效动力系统,其特征在于,所述储油罐内还设有增压泵。
7.根据权利要求1所述的一种船舶的高效动力系统,其特征在于,所述循环水管道用于循环收集船舶发动机的热量,并暂留于发动机余热装置中。
8.根据权利要求1所述的一种船舶的高效动力系统,其特征在于,所述发生器的内部侧壁上还设有超声波发射装置。
9.根据权利要求1所述的一种船舶的高效动力系统,其特征在于,所述散热盘管和空气分配器由不锈钢材料制成,其表面需要进行特殊的处理,具体包括如下步骤:
(1)水洗:用去离子水对待加工工件进行冲洗,洗去杂质后备用;
(2)脱脂:将步骤(1)处理后的工件放入脱脂液中,浸泡处理20~25min后取出备用;所述脱脂液由如下重量份的物质组成:5~7份三聚磷酸钠、3~4份硝酸钠、2~4份钼酸钠、2~3份葡萄糖酸钠、6~8份平平加、4~6份壬基酚聚氧乙烯醚、2~3份牛磺酸、1~2份脂肪醇聚氧乙烯醚硫酸钠、1~2份二乙醇胺、120~130份去离子水;
(3)水洗:用去离子水对步骤(2)处理后的工件进行冲洗后备用;
(4)碱洗:将步骤(3)处理后的工件放入0.4~0.6mol/L 的NaOH溶液中浸泡处理1.5~2.5min,取出后备用;
(5)电解:将步骤(4)处理后的工件放入电解液中电解处理15~20min后取出,电解时的电流密度为2.0~2.5A/dm2、工作电压为21~23V,所述电解液为浓度为1.6~1.9mol/L的硫酸溶液;
(6)喷涂:将混合颗粒喷涂在步骤(5)处理后的工件表面,喷涂的速度控制为1100~1200m/s;所述混合颗粒由如下重量份的物质组成:50~55份纳米二氧化钛、5~7份纳米磷酸钙、18~20份锌粉、3~5份六方氮化硼、4~7份碳化硅、2~4份聚乙烯蜡;
(7)保温干燥:将步骤(6)处理后的工件取出后先放入温度为75~80℃的条件下保温处理1~1.2h,然后对其进行干燥,干燥的温度控制为125~135℃。
10.根据权利要求9所述的一种船舶的高效动力系统,其特征在于,步骤(6)中所述的混合颗粒共混粉碎后的平均粒径大小为150~170 μm。
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