CN108709086A - 一种核电站氢气升压系统 - Google Patents
一种核电站氢气升压系统 Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
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- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/06—Combinations of two or more pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
- F17C13/123—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures for gas bottles, cylinders or reservoirs for tank vehicles or for railway tank wagons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
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- F17C2221/012—Hydrogen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
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- F17C2260/04—Reducing risks and environmental impact
- F17C2260/042—Reducing risk of explosion
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/30—Hydrogen technology
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
本发明提供一种核电站氢气升压系统,其包括:气源,其采用核电站内的低压氢气;升压系统,其采用气动增压泵组件;增压泵组件,其由两级或多级的泵并联组成;压缩空气,其作为所述增压泵组件的驱动气源;升压系统内氢气管路,其由氮气作为吹扫置换气源;高压氢气瓶,其用于接收和储存高压氢气。本发明提供的核电站氢气升压系统,能够根据电厂的运行需求连续或间断的生产高压氢气并灌充至高压氢气瓶,以满足三代核电站一回路催化除氧的用氢需求,系统安全可靠。
Description
技术领域
本发明涉及压水堆,具体涉及一种核电站氢气升压系统。
背景技术
AP1000三代压水堆核电站首次采用直接向一回路注入高压氢气的方式,来控制反应堆冷却剂中的氧含量,以减少对材料的腐蚀。由于一回路运行压力较高,因此工程上需要注入的氢气压力也很高。一方面,大容积的高压氢气储罐若存放于核电站内,将成为电厂内重大危险源的重要组成部分,是危及核电站安全的潜在爆炸危险因素。另一方面,鉴于核电站一回路的用氢需求,频繁地从外部采购高压氢气并灌充气瓶将给操作人员带来不必要的运行负担,同时增加了人为操作带来的安全风险。因此,若能设计一种核电站的氢气升压系统,在电厂内将低压氢气增压至需求的高压并自动灌充至气瓶内,将可以避免在核电站内储存有潜在危险的大量的高压氢气,并能有效的简化运行人员的操作。
发明内容
本发明针对现有技术的不足,提出一种核电站氢气升压系统。
本发明提供一种核电站氢气升压系统,其特征在于,包括:
气源,其采用核电站内的低压氢气;
升压系统,其采用气动增压泵组件;实现低压氢气向高压氢气的转化,避免了电、热火花等不利因素的产生;
增压泵组件,其由两级或多级的泵并联组成;以实现不同的增压需求;
压缩空气,其作为所述增压泵组件的驱动气源;
升压系统内氢气管路,其由氮气作为吹扫置换气源,保证运行安全;及
高压氢气瓶,其用于接收和储存高压氢气。
优选地,所述低压氢气通过外购氢气或者制氢工艺获得。
优选地,还包括流量和压力仪表,用于监测所述增压泵组件的进出口压力和气体流量。
优选地,氮气管路和氢气管路设置有过滤器,用于过滤氮气和氢气介质中的杂质。
优选地,还包括放空管线,所述放空管线上设置有阻火器,用以防止外部的燃烧或爆炸事故蔓延至管道内部。
优选地,多个高压氢气瓶经配置以同时进行灌充。
优选地,采用手动或自动控制,经配置以根据升压速度、压力值以及气瓶温升联锁停机。
与现有技术相比,本发明具有以下有益效果:
1、本发明提供的核电站氢气升压系统,能够根据电厂的运行需求连续或间断的生产高压氢气并灌充至高压氢气瓶,以满足三代核电站一回路催化除氧的用氢需求,系统安全可靠。
2、本发明提供的核电站氢气升压系统,在满足高压用氢的前提下,既能减少核电站内高压氢气的储存量,降低潜在爆炸的风险,同时又能降低对运行人员的操作需求,大大提高了核电站内高压氢气使用的便捷性和安全性。
附图说明
图1为符合本发明优选实施例的核电站氢气升压系统的流程简图。
图2为符合本发明优选实施例的增压泵组件的示意图。
其中:1—氮气;2—低压氢气;3—压缩空气;4—放空管线;5—氮气供应隔离阀;6—低压氢气进气隔离阀;7—压缩空气供气隔离阀;8—放空管线隔离阀;9—氮气过滤器;10—氮气吹扫管线隔离阀;11—氢气放空管线隔离阀;12—氢氧分析仪进口隔离阀;13—氢氧分析仪进口调压阀;14—氢氧分析仪;15—低压氢气进口压力表;16—增压泵进口过滤器;17—增压泵组件;18—增压泵出口过滤器;19—增压泵出口止回阀;20—氮气吹扫管线隔离阀;21—增压泵出口流量计;22—增压泵出口压力表;23—高压氢气灌充隔离阀;24—高压氢气灌充软管;25—高压氢气瓶;26-阻火器
具体实施方式
为使本发明的上述目的、特征和优点能够更加明显易懂,下面结合附图和具体实施方式对本发明作进一步详细的说明。
如图1和2所示,本发明提供的核电站氢气升压系统采用核电站内的低压氢气作为气源,低压氢气可通过外购氢气或者制氢工艺获得;升压系统采用气动增压泵组件,实现低压氢气向高压氢气的转化,避免了电、热火花等不利因素的产生;增压泵组件可以由两级或多级的泵并联组成,以实现不同的增压需求;增压泵组件采用压缩空气作为驱动气源;升压系统内氢气管路由氮气作为吹扫置换气源,保证运行安全;升压系统设置有流量和压力仪表,用于监测增压泵进出口压力和气体流量;升压系统氮气管路和氢气管路设置有过滤器,用于过滤氮气和氢气介质中的杂质;放空管线上设置有阻火器,防止外部的燃烧或爆炸事故蔓延至管道内部;可根据用户需求同时对多个高压氢气瓶进行灌充;整个升压系统可采用手动或自动控制,根据升压速度、压力值以及气瓶温升等联锁停机,操作简单、安全。
核电站内需要进行氢气升压和气瓶灌充时,首先对系统进行氮气置换,关闭高压氢气瓶25的角阀,开启氮气供应隔离阀5、低压氢气进气隔离阀6、压缩空气供气隔离阀7、放空管线隔离阀8、氮气吹扫管线隔离阀10、氢气放空管线隔离阀11、氮气吹扫管线隔离阀20和高压氢气灌充隔离阀23,完成氮气置换空气;其次,对系统进行氢气置换,关闭氮气供应隔离阀5和压缩空气供气隔离阀7,开启低压氢气进气隔离阀6,完成氢气置换氮气;然后进行氢气的升压和灌充,关闭放空管线隔离阀8、氮气吹扫管线隔离阀10和氮气吹扫管线隔离阀20,开启压缩空气供气隔离阀7和高压氢气瓶25的角阀,启动增压泵组件,完成氢气升压并灌充至高压氢气瓶25内。上述操作均可通过自动控制完成。
升压、灌充完毕后,取下高压氢气瓶25,进行氮气吹扫流程,操作同上述第一步氮气置换。
可根据电厂实际需求设置多组高压氢气灌充隔离阀23、高压氢气灌充软管24和高压氢气瓶25,系统运行时同时给多组气瓶灌充,可降低系统启停和操作人员更换气瓶的频率。
与现有技术相比,本实施例具有以下有益效果:
1、本实施例提供的核电站氢气升压系统,能够根据电厂的运行需求连续或间断的生产高压氢气并灌充至高压氢气瓶,以满足三代核电站一回路催化除氧的用氢需求,系统安全可靠。
2、本实施例提供的核电站氢气升压系统,在满足高压用氢的前提下,既能减少核电站内高压氢气的储存量,降低潜在爆炸的风险,同时又能降低对运行人员的操作需求,大大提高了核电站内高压氢气使用的便捷性和安全性。
本领域技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本发明的范围。
显然,本领域的技术人员可以对发明进行各种改动和变型而不脱离本发明的精神和范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包括这些改动和变型在内。
Claims (7)
1.一种核电站氢气升压系统,其特征在于,包括:
气源,其采用核电站内的低压氢气;
升压系统,其采用气动增压泵组件;
增压泵组件,其由两级或多级的泵并联组成;
压缩空气,其作为所述增压泵组件的驱动气源;
升压系统内氢气管路,其由氮气作为吹扫置换气源;及
高压氢气瓶,其用于接收和储存高压氢气。
核电站内的低压氢气进入升压系统,在压缩空气的驱动下,增压泵组件工作对低压氢气进行升压,获得高压氢气直接灌充至高压氢气瓶。氮气用于整个升压管路的吹扫置换。
2.如权利要求1所述的核电站氢气升压系统,其特征在于,所述低压氢气通过外购氢气或者制氢工艺获得。
3.如权利要求1所述的核电站氢气升压系统,其特征在于,还包括流量和压力仪表,用于监测所述增压泵组件的进出口压力和气体流量。
4.如权利要求1所述的核电站氢气升压系统,其特征在于,氮气管路和氢气管路设置有过滤器,用于过滤氮气和氢气介质中的杂质。
5.如权利要求1所述的核电站氢气升压系统,其特征在于,还包括放空管线,所述放空管线上设置有阻火器,用以防止外部的燃烧或爆炸事故蔓延至管道内部。
6.如权利要求1所述的核电站氢气升压系统,其特征在于,多个高压氢气瓶经配置以同时进行灌充。
7.如权利要求1所述的核电站氢气升压系统,其特征在于,采用手动或自动控制,经配置以根据升压速度、压力值以及气瓶温升联锁停机。
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