CN110566806B - 制氢储能系统压缩能回收利用系统 - Google Patents
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 151
- 239000001257 hydrogen Substances 0.000 title claims abstract description 151
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 151
- 230000006835 compression Effects 0.000 title claims abstract description 49
- 238000007906 compression Methods 0.000 title claims abstract description 49
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000004146 energy storage Methods 0.000 title claims abstract description 18
- 238000004064 recycling Methods 0.000 title claims abstract description 12
- 239000001301 oxygen Substances 0.000 claims abstract description 101
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 101
- 239000007789 gas Substances 0.000 claims abstract description 72
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims abstract description 44
- 230000005540 biological transmission Effects 0.000 claims abstract description 20
- 230000006837 decompression Effects 0.000 claims abstract description 13
- 239000000446 fuel Substances 0.000 claims description 18
- 238000010248 power generation Methods 0.000 abstract description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 63
- 238000000034 method Methods 0.000 description 8
- 229910001882 dioxygen Inorganic materials 0.000 description 6
- 239000012528 membrane Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
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Abstract
本发明提供了一种制氢储能系统压缩能回收利用系统,包括高压储氢/储氧罐、高压气体输送管道、低压氢/氧输入管道、低压氢/氧输出管道、多级减压/加压系统、发电电动机、传动轴;多级减压/加压系统包括压缩泵;高压储氢/储氧罐与高压气体输送管道相连通;高压气体管道上设置有多级减压/加压系统;高压气体管道设置有相连通的低压氢/氧输入管道和低压氢/氧输出管道;所述多级减压/加压系统位于高压储氢/储氧罐与低压氢/氧输入管道之间;低压氢/氧输入管道比低压氢/氧输出管道更靠近高压储氢/储氧罐;压缩泵的通过传动轴与发电电动机相连接。本发明实现压缩能发电,提高制氢储能系统能量利用效率。
Description
技术领域
本发明涉及水利水电机电技术领域,具体涉及一种制氢储能系统压缩能回收利用系统。
背景技术
随着技术的发展水电站内实现技术经济性高的制氢储能逐渐成为现实。
常规电解制氢生成的氢、氧气体其存储压力在3MPa以内,向氢燃料电池的质子交换膜输入的氢气压力在0.16MPa左右。而目前用于汽车工业的储氢压力约在35MPa~100Mpa。采用更高的压力进行氢能的存储,则更能减少存储空间,但消耗的能量更高。
因此,在储氢、储氧过程中,一般设置压缩泵对管道内气体进行增压,使得达到一定的存储压力,便于更小体积的运输及存储。上述增压过程将消耗大量的电能。
在向氢燃料电池质子交换膜进行供氢供氧时,由于存储压力高于质子交换膜的输入气体压力,一般在传输管道中设置减压阀进行降压,使得气体压力达到要求的输入值。上述减压过程的释放了大量的压缩能却未能利用,造成了能量的浪费。
发明内容
本发明的目的就是针对现有技术的缺陷,提供一种制氢储能系统压缩能回收利用系统,实现氢气的压缩存储和氢燃料电池的减压释放为一个正向/反向互逆的过程,通过收集利用上述系统的能量,实现压缩能发电,提高制氢储能系统能量利用效率。
本发明提供了一种制氢储能系统压缩能回收利用系统,其特征在于包括高压储氢/储氧罐、高压气体输送管道、低压氢/氧输入管道、低压氢/氧输出管道、多级减压/加压系统、发电电动机、传动轴;多级减压/加压系统包括压缩泵;高压储氢/储氧罐与高压气体输送管道相连通;高压气体管道上设置有多级减压/加压系统;高压气体管道设置有相连通的低压氢/氧输入管道和低压氢/氧输出管道;高压储氢/储氧罐与低压氢/氧输入管道之间设置有压缩泵;低压氢/氧输入管道和低压氢/氧输出管道可以相互替换使用;压缩泵的通过传动轴与发电电动机相连接;
高压储氢/储氧罐通过高压气体输送管道用于输入或输出高压氢气/氧气;
当压缩气体时,低压氢/氧输入管道输入的低压氢/氧气经多级减压/加压系统加压后输入高压储氢/储氧罐;压缩泵用于压缩气体,发电电动机作为电动机通过传动轴带动压缩泵运转;
当释放气体时,高压储氢/储氧罐输出的高压氢/氧气经多级减压/加压系统减压后由低压氢/氧输出管道输出;发电电动机作为发电机,高压氢/氧气向低压氢/氧输出管道流动时带动压缩泵转动,通过传动轴带动发电电动机转动,输出电能。
上述技术方案中,所述低压氢/氧输入管道和压缩泵包括若干个;压缩泵设置于高压储氢/储氧罐与低压氢/氧输入管道之间或相邻两个低压氢/氧输入管道之间。
上述技术方案中,还包括低压气体输送管道;低压气体输送管道设置于高压气体输送管道尾端;低压气体输送管道的输入端与高压气体输送管道的输出端相连通;低压气体输送管道输出氢/氧气至氢燃料电池系统用作原料。
上述技术方案中,低压气体输送管道和高压气体输送管道尾端之间设置有压缩泵;压缩泵的通过传动轴与发电电动机相连接。
上述技术方案中,发电电动机的输出端与交流电力用户侧电连接;向交流用户供电。
上述技术方案中,还包括DC/AC系统;DC/AC系统的输入端与氢燃料电池系统的输出端电连接;DC/AC系统的输出端与交流电力用户侧电连接;氢燃料电池系统产生的直流电力经DC/AC系统逆变后向交流用户供电。
上述技术方案中,低压氢/氧输入管道、低压氢/氧输出管道以及高压气体管道尾端均设置有阀门。
本发明基于水电站制氢储能系统中,电解制氢系统生成的低压氢气/氧气经过低压氢/氧输入管道通过多级减压/加压系统加压后,经过高压气体输送管道存入高压储氢/储氧罐;满足不同输入气体不同的加压要求;高压储氢/储氧罐内高压气体,经过多级减压/加压系统将气体降压至一定的压力,若氢/氧气体用于燃料电池发电,则一般降至0.16Mpa,若用于向用户供应氢/氧产品,则视氢/氧输送压力罐车的压力值或输送管道的压力值。在此过程中,发电电动机处于发电机工况,气体通过压缩泵时带动叶片旋转,通过传动轴进而带动发电机旋转,产生电能。本发明使得氢气的压缩存储和氢燃料电池的减压释放形成一个正向/反向互逆的过程,通过收集利用上述系统的能量,实现压缩能发电,提高制氢储能系统能量利用效率。
附图说明
图1制氢储能系统压缩能回收利用系统图
附图标记说明如下:
1、高压储氢/储氧罐;2、高压气体输送管道;3、低压氢/氧输入管道;4、低压氢/氧输出管道;5、氢/氧输送压力罐车;6、阀门;7、多级减压/加压系统;8、压缩泵;9、发电电动机;10、氢燃料电池系统;11、DC/AC系统;12、交流电力用户侧;13、低压气体输送管道;14、传动轴。
具体实施方式
下面结合附图和具体实施例对本发明作进一步的详细说明,便于清楚地了解本发明,但它们不对本发明构成限定。
如图1所示,本发明所述制氢储能系统压缩能回收利用系统,其包括如下主要构成部分:高压储氢/储氧罐1、高压气体输送管道2、低压氢/氧输入管道3、低压氢/氧输出管道4、阀门6、多级减压/加压系统7、压缩泵8、发电电动机9、氢燃料电池系统10、DC/AC系统11、低压气体输送管道13、传动轴14。
其中高压储氢/储氧罐1用于采用高压方式存储电解制氢系统生成的氢气和氧气,存储在高压储氢/储氧罐1的气体压力为3MPa~1000Mpa,根据具体工业系统构成方案而变化。所述的高压储氢/储氧罐1既可以是常规的压力钢罐,也可以是依托溶洞、施工支洞等工业设施改装的大容量高压存储装置。
高压气体输送管道2用于输入或输出高压氢气/氧气,气体压力值为3MPa~1000Mpa。
低压氢/氧输入管道3用于输入电解制氢系统生成的低压氢/氧气体,该气体的压力值在0.1MPa~3Mpa之间,根据具体工业系统构成方案而变化。低压氢/氧输入管道3输送的气体经过多级加压系统存入高压储氢/储氧罐1
低压氢/氧输出管道4用于向氢/氧输送压力罐车5或其他类型向氢/氧用户输送氢/氧产品(如气体输送管道)。
阀门6用于开启或关停管道的输送功能。
多级减压/加压系统7用于加压或者降压管道内的气体。图1所示的为2级减压/加压系统,但实际工业构成方案可能有多级或仅有一级,本附图仅为示例。应当说明,多级减压/加压系统7的级数不限制本专利的保护范围。
压缩泵8是多级减压/加压系统7的重要构成部分,用于加压气体或减压气体。
发电电动机9是压缩泵8的动力来源,当压缩气体时,其作为电动机工作用,用于将气体加压进行存储;当释放气体时,其作为发电机工作用,高压气体向低压侧释放时,带动压缩泵8转动,通过传动轴带动发电机转动,输出电能。
氢燃料电池系统10用于接收低压氢气和氧气,通过质子交换膜生成直流电力。
DC/AC系统11用于逆变燃料电池系统输送的直流电力,向交流用户供电。
低压气体输送管道13用于向燃料电池系统输送符合质子交换膜安全稳定工作的氢/氧气体。
传动轴用于发电电动机9和压缩泵8之间的动力传输。
本套系统的工作流程为:
(1)储存工况:电解制氢系统生成的低压氢气/氧气(0.1Mpa~3Mpa)经过低压氢/氧输入管道3向本系统输入氢气/氧气,经过多级减压/加压系统7将气体加压至3~1000Mpa,经过高压气体输送管道2存入高压储氢/储氧罐1。不同的气体从不同的低压氢/氧输入管道3输入,以经过不同级数的压缩泵,以满足不同的输入气体的不同加压需求。在此过程中,发电电动机9处于电动机工况,接收厂用电系统提供的电能,通过传动轴带动压缩泵8运作,压缩低压气体。
(2)释放工况:高压储氢/储氧罐1内高压气体,经过多级减压/加压系统7将气体降压至一定的压力,若氢/氧气体用于氢燃料电池发电,则一般降至0.16Mpa,若用于向用户供应氢/氧产品,则视氢/氧输送压力罐车5的压力值或输送管道的压力值。在此过程中,发电电动机9处于发电机工况,气体通过压缩泵8时带动叶片旋转,通过传动轴进而带动发电机旋转,产生电能。发电电动机的输出端与交流电力用户侧电连接;向交流用户供电。氢燃料电池系统产生的直流电力经DC/AC系统逆变后向交流用户供电
本说明书未作详细描述的内容属于本领域专业技术人员公知的现有技术。
Claims (5)
1.一种制氢储能系统压缩能回收利用系统,其特征在于包括高压储氢/储氧罐、高压气体输送管道、低压氢/氧输入管道、低压氢/氧输出管道、多级减压/加压系统、发电电动机、传动轴;多级减压/加压系统包括压缩泵;高压储氢/储氧罐与高压气体输送管道相连通;高压气体管道上设置有多级减压/加压系统;高压气体管道设置有相连通的低压氢/氧输入管道和低压氢/氧输出管道;高压储氢/储氧罐与低压氢/氧输入管道之间设置有压缩泵;压缩泵的通过传动轴与发电电动机相连接;
高压储氢/储氧罐通过高压气体输送管道用于输入或输出高压氢气/氧气;
当压缩气体时,低压氢/氧输入管道输入的低压氢/氧气经多级减压/加压系统加压后输入高压储氢/储氧罐;压缩泵用于压缩气体,发电电动机作为电动机通过传动轴带动压缩泵运转;
当释放气体时,高压储氢/储氧罐输出的高压氢/氧气经多级减压/加压系统减压后由低压氢/氧输出管道输出;发电电动机作为发电机,高压氢/氧气向低压氢/氧输出管道流动时带动压缩泵转动,通过传动轴带动发电电动机转动,输出电能;
所述低压氢/氧输入管道和压缩泵包括若干个;压缩泵设置于高压储氢/储氧罐与低压氢/氧输入管道之间或相邻两个低压氢/氧输入管道之间;
还包括低压气体输送管道;低压气体输送管道设置于高压气体输送管道尾端;低压气体输送管道的输入端与高压气体输送管道的输出端相连通;低压气体输送管道输出氢/氧气至氢燃料电池系统用作原料。
2.根据权利要求1所述的制氢储能系统压缩能回收利用系统,其特征在于低压气体输送管道和高压气体输送管道尾端之间设置有压缩泵;压缩泵的通过传动轴与发电电动机相连接。
3.根据权利要求2所述的制氢储能系统压缩能回收利用系统,其特征在于发电电动机的输出端与交流电力用户侧电连接;向交流用户供电。
4.根据权利要求2所述的制氢储能系统压缩能回收利用系统,其特征在于还包括DC/AC系统;DC/AC系统的输入端与氢燃料电池系统的输出端电连接;DC/AC系统的输出端与交流电力用户侧电连接;氢燃料电池系统产生的直流电力经DC/AC系统逆变后向交流用户供电。
5.根据权利要求1所述的制氢储能系统压缩能回收利用系统,其特征在于低压氢/氧输入管道、低压氢/氧输出管道以及高压气体管道尾端均设置有阀门。
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