CN216844109U - 一种1000m3节能型液氩贮槽 - Google Patents

一种1000m3节能型液氩贮槽 Download PDF

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CN216844109U
CN216844109U CN202123066341.3U CN202123066341U CN216844109U CN 216844109 U CN216844109 U CN 216844109U CN 202123066341 U CN202123066341 U CN 202123066341U CN 216844109 U CN216844109 U CN 216844109U
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storage tank
overpressure
liquid
pipeline
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冯秀霞
张鹏武
刘永
鲍玉超
李卫波
闫俊超
曹亮
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Xian Shaangu Power Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
    • F25J1/0012—Primary atmospheric gases, e.g. air
    • F25J1/002—Argon
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0221—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using the cold stored in an external cryogenic component in an open refrigeration loop
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
    • F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
    • F25J1/0258—Construction and layout of liquefaction equipments, e.g. valves, machines vertical layout of the equipments within in the cold box
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/42—Nitrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/90—Boil-off gas from storage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2250/00—Details related to the use of reboiler-condensers
    • F25J2250/02—Bath type boiler-condenser using thermo-siphon effect, e.g. with natural or forced circulation or pool boiling, i.e. core-in-kettle heat exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/62—Details of storing a fluid in a tank

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

本实用新型公开了一种1000m3节能型液氩贮槽，包括液氩贮槽本体，所述液氩贮槽本体顶部安装有超压氩气液化器，所述超压氩气液化器与液氩贮槽本体顶部通过超压氩气管路连通；所述超压氩气液化器还连接有液氮输送管路；所述液氮输送管路穿过超压氩气液化器后，通过氮气放空管路排放至大气，所述超压氩气液化器还连接有液氩返回储槽管路。通过有效利用低温液氮的冷量将超压氩气冷凝成液氩，并加以回收，替代了原有的外排氩气泄压法，满足贮槽泄压工艺要求的同时，提高了氩气回收效率，增强了实际使用效益；在原有的贮槽顶部集成氩气换热器，结构简单，易实现。

Description

一种1000m3节能型液氩贮槽
技术领域
本实用新型属于液氩贮槽技术领域，涉及一种1000m3节能型液氩贮槽。
背景技术
液氩贮槽为双层固定低温贮槽，在液氩密闭存储过程中，由于自然蒸发作用，部分液氩不断变成氩气留在贮槽上部，液氩贮槽内筒压力逐渐增高，持续增高的储存压力将影响贮槽正常使用。
液氩贮槽在使用过程中的超压泄压一直是影响贮槽正产使用的重要因素，其泄压操作直接决定了贮槽的运行安全。
目前，常用的液氩贮槽降压做法为在储罐顶部增设呼吸阀和调节阀等，将超压气体排出贮槽外，保持贮槽内压力符合设计使用需求。具体操作如下：
(1)超压触发放空阀
在贮槽顶部设置放空管线，管线上装有气动调节阀，贮槽通过该气动调节阀对其内部压力进行自动控制。当贮槽内压力达到20kPa时，自动调节阀开启，自动排放贮槽内超压部分的气体；当贮槽内压力低于15kPa时，自动调节阀关闭。
(2)超压触发呼吸阀
在贮槽顶部设置呼吸阀。当贮槽内压力达到22kPa时，呼吸阀开启排放贮槽内超压部分的气体；当贮槽内压力低于15kPa时，呼吸阀关闭。
以上均为外排氩气泄压的做法，造成氩气浪费，且泄压越频繁，氩气浪费越多。
实用新型内容
本实用新型的目的是提供一种1000m3节能型液氩贮槽，解决液氩贮槽在使用过程中的超压及氩气外排浪费的问题。
本实用新型所采用的技术方案是：一种1000m3节能型液氩贮槽，包括液氩贮槽本体，所述液氩贮槽本体顶部安装有超压氩气液化器，所述超压氩气液化器与液氩贮槽本体顶部通过超压氩气管路连通；所述超压氩气液化器还连接有液氮输送管路；所述液氮输送管路穿过超压氩气液化器后，通过氮气放空管路排放至大气，所述超压氩气液化器还连接有液氩返回储槽管路。
进一步地，超压氩气管路上还装有压力调节阀。
进一步地，液氮输送管路装有液位调节阀。
进一步地，氮气放空管路上安装有安全阀、压力控制阀和止回阀。
本实用新型的有益效果是：
本实用新型通过有效利用低温液氮的冷量将超压氩气冷凝成液氩，并加以回收，替代了原有的外排氩气泄压法，满足贮槽泄压工艺要求的同时，提高了氩气回收效率，增强了实际使用效益；在原有的贮槽顶部集成氩气换热器，结构简单，易实现；氩回收工艺可自动完成，无需人员操作，保证使用过程中的安全可靠性。
附图说明
图1是本实用新型1000m3节能型液氩贮槽结构示意图；
图2是本实用新型1000m3节能型液氩贮槽流程简图。
图中，1.液氩贮槽本体，2.压力调节阀，3.超压氩气液化器，4.液位调节阀，5.安全阀，6.压力控制阀，7.止回阀，8.超压氩气管路，9.液氩返回储槽管路，10.氮气放空管路，11.液氮输送管路。
具体实施方式
下面结合附图和具体实施方式对本实用新型进行详细说明。
如图1所示：一种1000m3节能型液氩贮槽，包括液氩贮槽本体1，所述液氩贮槽本体1顶部安装有超压氩气液化器3，所述超压氩气液化器3与液氩贮槽本体1顶部通过超压氩气管路8连通；所述超压氩气液化器3还连接有液氮输送管路11；所述液氮输送管路11穿过超压氩气液化器3后，通过氮气放空管路10排放至大气，所述超压氩气液化器3还连接有液氩返回储槽管路9。
超压氩气管路8上还装有压力调节阀2。
液氮输送管路11装有液位调节阀4。
氮气放空管路10上安装有安全阀5、压力控制阀6和止回阀7。
如图1所示，该系统的基本工作原理是，压力调节阀2检测到液氩贮槽本体1内压力过高时，压力调节阀2开启，超压氩气释放从超压氩气液化器 3中流过，经过超压氩气液化器3后，被冷却成液氩，回收的液氩流回液氩贮槽本体1底部。液氮自液氮输送管路11，经过液位调节阀4后从超压氩气液化器3中流过，复热成氮气，分别经过安全阀5、压力控制阀6、止回阀7，排入空气中。安全阀5的作用为，液氮气化系统超压泄放；压力控制阀6的作用为，检测超压氩气液化器3中氮气的压力，当其压力超过设定值时，阀门起跳；止回阀7的作用为，防止空气回流。利用低温液氮和超压氩气在超压氩气液化器3中充分换热，从而达到冷凝回收超压液氩的目的。
本方案中使用低温液氮做为制冷剂，其蒸发温度为-196℃左右，而氩气的冷凝温度为-185.7℃。也就是说，低温液氮在进入超压氩气液化器3时，温度≤-196℃，超压氩气在进入超压氩气液化器(3)时，温度≥-185.7℃。利用低温液氮作为冷却剂，在超压氩气液化器3中对超压氩气进行降温至冷凝，并进一步回收。

Claims (4)

1.一种1000m3节能型液氩贮槽，其特征在于，包括液氩贮槽本体(1)，所述液氩贮槽本体(1)顶部安装有超压氩气液化器(3)，所述超压氩气液化器(3)与液氩贮槽本体(1)顶部通过超压氩气管路(8)连通；所述超压氩气液化器(3)还连接有液氮输送管路(11)；所述液氮输送管路(11)穿过超压氩气液化器(3)后，通过氮气放空管路(10)排放至大气，所述超压氩气液化器(3)还连接有液氩返回储槽管路(9)。
2.根据权利要求1所述的一种1000m3节能型液氩贮槽，其特征在于，所述超压氩气管路(8)上还装有压力调节阀(2)。
3.根据权利要求1所述的一种1000m3节能型液氩贮槽，其特征在于，所述液氮输送管路(11)装有液位调节阀(4)。
4.根据权利要求1所述的一种1000m3节能型液氩贮槽，其特征在于，所述氮气放空管路(10)上安装有安全阀(5)、压力控制阀(6)和止回阀(7)。
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