CN102603035A - 潮流能非稳态增压海水淡化及发电装置 - Google Patents
潮流能非稳态增压海水淡化及发电装置 Download PDFInfo
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Abstract
本发明公开了一种潮流能非稳态增压海水淡化及发电装置,属于海洋可再生能源开发和海水淡化领域。由水轮机、联轴器、转轴、密封组件、机舱、流量调节组件、可调斜盘、变径柱塞、非均匀缸体、非匀质弹簧、多通道配流盘、增压泵出口管路、制淡入口溢流阀、非稳态反渗透膜、淡水管路、高压浓盐水管路、制淡出口溢流阀、液流电池、浓盐水排放管路、控制器、海水入口、海水预处理装置、增压泵入口管路、增压泵轴承、刹车装置、偏航装置、支撑装置、绿色船舶、风力海水淡化及发电装置、太阳能海水淡化及发电装置、蓄电池、淡水容器、波浪能海水淡化及发电装置组成。采用水轮机非稳态增压降低了反渗透膜的浓差极化,余能通过液流电池回收发电,兼备海水淡化、发电、储能三大功能,高效、清洁。
Description
技术领域
本发明属于海洋可再生能源开发和海水淡化领域,涉及潮流能非稳态增压海水淡化及发电装置。
背景技术
能源和环境是人类可持续发展面临的重大问题,随着对能源资源的开发日趋激烈,在环境污染加重的同时环保压力也随之增大,世界各国政府都对可再生能源与清洁能源的开发利用给予了高度重视。海洋蕴藏着巨大的可再生清洁能源(如波浪能、潮流能、风能、太阳能等)和资源(如海水等),开发应用前景分广阔,海洋能源和资源的开发和利用是建设资源节约型和环境友好型社会的重要基础。
随着淡水资源稀缺性的日益突显,各国对海水的利用越来越重视。尤其是对于海岛、海上钻井平台等,对电力和淡水依赖程度高,能源、资源匮乏,开发利用成本高。即使在岛屿密集海域,集中修建大型海水淡化和发电基础设施,其投入成本高,风险大,且共享困难。
专利申请:风、光及海潮流清洁能源海水淡化装置,申请号201010198014.0,主要内容如附图1所示;风力发电机组、太阳能电池板和海潮流发电装置共同为海水淡化装置提供电能,进行海水淡化,使海水淡化装置不再受电力供应的限制;但该发明中风能、海流能分别通过风力涡轮和浮球转变为机械能,机械能通过发电机转化为电能,电能通过蓄电池存储,蓄电池中的电能通过电动机转化为高压泵的机械能为海水增压,因此整个循环效率极低。采用浮球吸收海流中波浪的能量,而未采用水轮机利用海流中潮流能。反渗透法海水淡化以后,浓水直接排放而余压没有回收,海水淡化能耗高。综上,该发明循环效率低,海水淡化本身效率低。
专利申请:利用潮汐能驱动的海水淡化及发电的方法与装置,申请号201010581552.8,主要内容如附图2所示;它利用涨潮时大海中的高位海水在流向蓄水池内的过程中冲击水轮机转动和/或退潮后蓄水池中的高位海水在流向大海的过程中冲击水轮机转动,水轮机带动高压泵工作产生高压海水,高压海水经过反渗透膜组件淡化,从反渗透膜组件中排出的高压浓海水冲击涡轮机转动,涡轮机带动发电机转动产生电能,实现潮汐能的综合利用和转化。但在海边修建蓄水池,对生态环境影响大。
专利申请:利用海洋能源进行海水淡化和发电的方法及装置,申请号200910038665.0,主要内容如附图3所示;通过采能器采集海洋波涌的能量,用海水加压泵对海水进行加压,然后通过海水高压管输入到海水淡化***中进行淡水生产;尾水导入水轮发电机***进行发电。综上,该发明利用波浪能进行海水淡化和发电。
综上,采用海洋可再生能源如风能、太阳能、波浪能等为动力进行反渗透法海水淡化或发电是一种清洁、绿色、环保的制淡和发电方法。理论上,正渗透可以采用具有非常高的渗透压的驱动溶液而实现比反渗透更大的水通量,然而研究发现实际通量远远小于预期值。这是由于正渗透过程特有的浓差极化现象造成的。而在反渗透的膜分离过程中,同样存在浓差极化。浓差极化层的存在将不同程度地妨害膜的传递效率,例如增高膜表面溶液渗透压、明显缩短其寿命,甚至带来严重后果。一般可以通过增加膜表面的剪切力和湍流来降低浓差极化对膜过程的影响。
目前海水淡化存在的问题集中于:1、缺乏将潮流能直接用于增压进行海水淡化的技术;2、如何消除反渗透淡化中的浓差极化问题;3、反渗透法海水淡化后的浓盐水余压较高,如果不进行回收,将显著提高海水淡化成本。
发明内容
本发明针对海岛或海洋设施淡水和电力供应不便、基础投资大、不便共享的问题,结合海洋可再生能源进行海水淡化或发电的难点,提出潮流能非稳态增压海水淡化及发电装置。
本发明解决技术问题采用的方案如下:
潮流能非稳态增压海水淡化及发电装置,包括海水入口、海水预处理装置、增压泵入口管路、多通道配流盘、水轮机、联轴器、转轴、非均匀缸体、增压泵轴承、可调斜盘、非匀质弹簧、变径柱塞、增压泵出口管路、制淡入口溢流阀、非稳态反渗透膜、淡水管路、高压浓盐水管路、制淡出口溢流阀、液流电池、浓盐水排放管路、密封组件、机舱、控制器、流量调节组件、偏航装置、刹车装置、支撑装置;
所述的水轮机,为竖直轴水轮机、水平轴水轮机中的一种,水轮机与机舱之间采用流线形圆锥体过渡;
所述的变径柱塞,个数为2-8个,各变径柱塞的直径不相同;
所述的非均匀缸体,非均匀缸体上面分布有柱塞缸,柱塞缸个数与变径活塞相同,每个柱塞缸内径与对应的变径柱塞外径相同,柱塞缸中心与非均匀缸体中心之间的距离有两种,柱塞缸沿周向分布不均匀;
所述的非匀质弹簧,个数与变径柱塞相同,每个非匀质弹簧的中径和线径沿长度方向变化,即每个非匀质弹簧的刚度为非线性刚度,各非匀质弹簧之间结构和刚度也不相同;
所述的多通道配流盘,有两类圆弧形配流通道,两类圆弧半径分别与柱塞缸中心距离非均匀缸体中心的距离相同;
所述的非稳态反渗透膜,膜表面沿高压海水流动方向呈正弦波动;
水轮机、联轴器、转轴、非均匀缸体之间刚性连接,构成同轴的旋转体,通过增压泵轴承支撑;可调斜盘与转轴轴线之间的夹角通过流量调节组件调节;增压泵出口管路通过制淡入口溢流阀连接非稳态反渗透膜,非稳态反渗透膜通过高压浓盐水管路和制淡出口溢流阀连接液流电池;增压泵入口管路连接多通道配流盘和海水预处理装置;控制器采用电缆连接液流电池、刹车装置、流量调节组件;
整个装置通过支撑装置安装于海底潮流流速较高的海域,构成座底式结构。
所述的潮流能非稳态增压海水淡化及发电装置,潮流能非稳态增压海水淡化及发电装置通过支撑装置安装于机舱和绿色船舶之间,该结构和风力海水淡化及发电装置、太阳能海水淡化及发电装置、蓄电池、淡水容器、波浪能海水淡化及发电装置共同构成漂浮式结构;绿色船舶采用蓄电池直接驱动螺旋桨,绿色船舶上还分别安装风力海水淡化及发电装置、太阳能海水淡化及发电装置和波浪能海水淡化及发电装置;风力海水淡化及发电装置、太阳能海水淡化及发电装置、波浪能海水淡化及发电装置和潮流能非稳态增压海水淡化及发电装置一起采用海洋可再生能源进行海水淡化和发电,淡水收集在淡水容器内,电能存储与蓄电池内。
工作原理:天然海水通过海水入口进入海水预处理装置,净化后的海水通过增压泵入口管路进入多通道配流盘;潮流驱动水轮机旋转,水轮机通过联轴器带动转轴、非均匀缸体并在增压泵轴承支承下一起旋转,在静止的可调斜盘和非匀质弹簧作用下,变径柱塞沿非均匀缸体内的柱塞缸轴向运动,将多通道配流盘中的海水增压,高压海水通过增压泵出口管路、制淡入口溢流阀,进入非稳态反渗透膜,一部分穿过渗透膜变成淡水,进入淡水管路存储起来,另一部分变成高压浓盐水通过高压浓盐水管路和制淡出口溢流阀进入液流电池,高压浓盐水驱动液流电池中的泵做功,将化学能转化为电能,存储起来;高压浓盐水经过液流电池变成浓盐水,通过浓盐水排放管路排放到海洋中。工作过程中,密封组件用于阻挡海水进入机舱中;当需要改变增压流量时,通过控制器调节流量调节组件,改变可调斜盘的倾角;当潮流方向改变时,偏航装置自动调整水轮机的方向;在极端天气情况下,可以通过控制器控制刹车装置进行保护。
本发明的有益效果是:
1、高效:采用水轮机直接增压,通过一系列非稳态增压操作,实现海水在高压范围内无规则变化,从而在不平整的膜表面形成湍动,显著降低了浓差极化,因此大大降低了反渗透压力,从而提高海水淡化效率;采用潮流能-机械能-压力能的简洁、有效循环模式,而仍有一定压力的浓盐水在液流电池中驱动泵旋转,转化为电能存储,实现了潮流能的高效、充分利用。
2、多种能源供应于一体。综合利用海上风能、太阳能、潮流能、波浪能进行海水淡化和发电,实现各种能量的互补利用,确保整体功能的可达性,避免了能源类型单一,来源不稳定的缺点。
3、移动式:采用绿色船舶为载体,集海水淡化、发电储能于一体。其一,可以根据气象预报将船舶移动至海洋能密集海域抛锚固定,进行制淡和发电作业;其二,可以方便定期或按需为周边岛屿供应淡水、电力(蓄电池),能够替代海岛用油发电,节省燃料;避免了在单一岛屿投资兴建大型基础设置海水淡化的高额投资,不便各岛屿共享的缺点;其三,可以在暴风雨时移动至避风港避难,安全可靠。因此适合于西沙、南海群岛,方便军民两用。
4、清洁,无生态污染:采用电力驱动的绿色船舶,蓄电池本体采用无污染材料,工作过程无污染物排放。整个***供应的能源及消耗能源均为海洋清洁能源,无污染物排放,且避免了海洋结构物对海洋生态的危害。
附图说明
图1是现有的风、光及海潮流清洁能源海水淡化装置结构示意图。
图2是现有的利用潮汐能驱动的海水淡化及发电的方法与装置结构示意图。
图3是现有的利用海洋能源进行海水淡化和发电的方法及装置结构示意图。
图4是本发明的潮流能非稳态增压海水淡化及发电装置结构示意图。
图5是图4的截面图。
图6是本发明的潮流能非稳态增压海水淡化及发电装置方案2结构示意图。
图中:1水轮机;2联轴器;3转轴;4密封组件;5机舱;6流量调节组件;7可调斜盘;8变径柱塞;9非均匀缸体;10非匀质弹簧;11多通道配流盘;12增压泵出口管路;13制淡入口溢流阀;14非稳态反渗透膜;15淡水管路;16高压浓盐水管路;17制淡出口溢流阀;18液流电池;19浓盐水排放管路;20控制器;21海水入口;22海水预处理装置;23增压泵入口管路;24增压泵轴承;25刹车装置;26偏航装置;27支撑装置;28绿色船舶;29风力海水淡化及发电装置;30太阳能海水淡化及发电装置;31蓄电池;32淡水容器;33波浪能海水淡化及发电装置。
具体实施方式
如图所示,本发明的潮流能非稳态增压海水淡化及发电装置由水轮机1、联轴器2、转轴3、密封组件4、机舱5、流量调节组件6、可调斜盘7、变径柱塞8、非均匀缸体9、非匀质弹簧10、多通道配流盘11、增压泵出口管路12、制淡入口溢流阀13、非稳态反渗透膜14、淡水管路15、高压浓盐水管路16、制淡出口溢流阀17、液流电池18、浓盐水排放管路19、控制器20、海水入口21、海水预处理装置22、增压泵入口管路23、增压泵轴承24、刹车装置25、偏航装置26、支撑装置27、绿色船舶28、风力海水淡化及发电装置29、太阳能海水淡化及发电装置30、蓄电池31、淡水容器32、波浪能海水淡化及发电装置33构成。
(1)根据淡水和电能需求量,确定非稳态反渗透膜14和液流电池18的功率,工作特性曲线;
(2)根据功率需求,确定水轮机1的功率、效率及工作特性曲线;
(3)根据水轮机1提供的扭矩和非稳态反渗透膜14所需要的压力、流量,设计增压泵中可调斜盘7、变径柱塞8、非均匀缸体9、非匀质弹簧10、多通道配流盘11的参数;
(4)根据海域特点,确定支撑结构,如果潮流流速较大,且仅给单一附近岛屿供应淡水和电能,则支撑装置27安装于海底,否则可采用绿色船舶28的漂浮式结构。
Claims (2)
1.潮流能非稳态增压海水淡化及发电装置,包括海水入口、海水预处理装置、增压泵入口管路、多通道配流盘、水轮机、联轴器、转轴、非均匀缸体、增压泵轴承、可调斜盘、非匀质弹簧、变径柱塞、增压泵出口管路、制淡入口溢流阀、非稳态反渗透膜、淡水管路、高压浓盐水管路、制淡出口溢流阀、液流电池、浓盐水排放管路、密封组件、机舱、控制器、流量调节组件、偏航装置、刹车装置、支撑装置;
所述的水轮机,为竖直轴水轮机、水平轴水轮机中的一种,水轮机与机舱之间采用流线形圆锥体过渡;
所述的变径柱塞,个数为2-8个,各变径柱塞的直径不相同;
所述的非均匀缸体,非均匀缸体上面分布有柱塞缸,柱塞缸个数与变径活塞相同,每个柱塞缸内径与对应的变径柱塞外径相同,柱塞缸中心与非均匀缸体中心之间的距离有两种,柱塞缸沿周向分布不均匀;
所述的非匀质弹簧,个数与变径柱塞相同,每个非匀质弹簧的中径和线径沿长度方向变化,即每个非匀质弹簧的刚度为非线性刚度,各非匀质弹簧之间结构和刚度也不相同;
所述的多通道配流盘,有两类圆弧形配流通道,两类圆弧半径分别与柱塞缸中心距离非均匀缸体中心的距离相同;
所述的非稳态反渗透膜,膜表面沿高压海水流动方向呈正弦波动;
水轮机、联轴器、转轴、非均匀缸体之间刚性连接,构成同轴的旋转体,通过增压泵轴承支撑;可调斜盘与转轴轴线之间的夹角通过流量调节组件调节;增压泵出口管路通过制淡入口溢流阀连接非稳态反渗透膜,非稳态反渗透膜通过高压浓盐水管路和制淡出口溢流阀连接液流电池;增压泵入口管路连接多通道配流盘和海水预处理装置;控制器采用电缆连接液流电池、刹车装置、流量调节组件;
整个装置通过支撑装置安装于海底潮流流速较高的海域,构成座底式结构。
2.根据权利要求1所述的潮流能非稳态增压海水淡化及发电装置,其特征还在于潮流能非稳态增压海水淡化及发电装置通过支撑装置安装于机舱和绿色船舶之间,该结构和风力海水淡化及发电装置、太阳能海水淡化及发电装置、蓄电池、淡水容器、波浪能海水淡化及发电装置共同构成漂浮式结构;绿色船舶采用蓄电池直接驱动螺旋桨,绿色船舶上还分别安装风力海水淡化及发电装置、太阳能海水淡化及发电装置和波浪能海水淡化及发电装置;风力海水淡化及发电装置、太阳能海水淡化及发电装置、波浪能海水淡化及发电装置和潮流能非稳态增压海水淡化及发电装置一起采用海洋可再生能源进行海水淡化和发电,淡水收集在淡水容器内,电能存储与蓄电池内。
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Also Published As
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WO2013131404A1 (zh) | 2013-09-12 |
US9938167B2 (en) | 2018-04-10 |
CN103089533A (zh) | 2013-05-08 |
US20140374330A1 (en) | 2014-12-25 |
CN103089533B (zh) | 2015-01-07 |
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