CN106813095A - 一种lng储罐翻滚抑制装置 - Google Patents
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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
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
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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
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
- F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
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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
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
- F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
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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
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/03—Heat exchange with the fluid
- F17C2227/0337—Heat exchange with the fluid by cooling
- F17C2227/0341—Heat exchange with the fluid by cooling using another fluid
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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
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/03—Heat exchange with the fluid
- F17C2227/0367—Localisation of heat exchange
- F17C2227/0369—Localisation of heat exchange in or on a vessel
- F17C2227/0374—Localisation of heat exchange in or on a vessel in the liquid
-
- 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
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/03—Heat exchange with the fluid
- F17C2227/0367—Localisation of heat exchange
- F17C2227/0397—Localisation of heat exchange characterised by fins
-
- 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
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/01—Improving mechanical properties or manufacturing
- F17C2260/016—Preventing slosh
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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
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0134—Applications for fluid transport or storage placed above the ground
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
本发明涉及一种LNG储罐翻滚抑制装置,主要包括:LNG储罐、热管以及连接器,热管直立于LNG储罐内,若干根热管在储罐内均匀布置,相邻热管间通过连接器相互连接。当LNG储罐内液层间存在温度梯度时,热管迅速启动,将底层热量传递到顶层,从而保证储罐内温度基本一致,从源头上抑制了翻滚现象的发生。与现有技术相比,本发明依靠液层温差驱动热管工作,无机械运动部件,因而无需外加动力,无噪声干扰,无污染,无需日常维修养护,安全可靠,能长期连续运行。
Description
技术领域:
本发明涉及LNG储存技术领域,具体涉及一种抑制LNG储罐翻滚事故发生的装置。
背景技术:
液化天然气(Liquefied Natural Gas)是将经过净化、压缩后的天然气在常压下冷却到其沸点(约-160℃)以下得到的液体。其重量约为同体积水的45%,体积约为同样质量气态天然气的1/600,密度约为标准状态下甲烷的600倍,体积能量密度为汽油的72%。天然气液化后可以大大节约储运空间,而且具有热值大、性能高等特点。
在卫星型液化站和LNG接收站,都有一定数量和规模的储罐。LNG在罐内储存过程中,会出现一种称为翻滚的不稳定现象,发生时瞬间产生大量的蒸发气体,造成储罐压力急剧上升,极易对对储罐造成损害,甚至引起火灾爆炸事故,带来巨大安全隐患。翻滚发生前提是由于LNG中发生分层,分层原因通常是氮优先蒸发或LNG来源不同。当储罐内LNG发生分层后,随着热量从外壁导入,底层LNG温度升高,密度变小;顶层LNG由于BOG的挥发而变重。各层液体密度不断发生变化,当相邻两层液体的密度近似相等时,两液层就会发生强烈混合,从而引发翻滚事故。
预防储存过程中翻滚现象的发生,对保障LNG安全营运具有很大的意义。发明专利(申请号200610035745)公开了一种液化天然气分层与涡旋监测报警装置,包括信号探测器、计算机、分层与涡旋数据库及管理系统、信号过程传递模块、分层与涡旋报警控制器、参照模式模块和警报装置。但该发明只能进行分层预警,而无法控制翻滚的发生。
实用新型专利(申请号201320230750.9)公开了一种LNG储罐防分层装置,主要通过电机驱动搅动系统旋转,通过搅动使储罐内LNG温度均匀一致,从而达到防止分层的目的。该方法的缺点是搅拌过程中会加剧LNG蒸发,产生大量的BOG,存在安全隐患。此外,需要消耗电能,运行成本高。
鉴于现有技术存在的问题,本发明提出了一种新型的LNG翻滚控制装置,无搅拌机械,无需消耗能量。研究已经表明,LNG储罐内温度分层是导致翻滚现象发生的重要原因,本发明利用热管的超强导热能力,在储罐内布置一定数量的热管,通过将下层热量迅速传递给上层,能自动实现储罐内温度均匀分布,进而从源头上抑制分层的发生。
发明内容:
本发明涉及一种LNG储罐翻滚抑制装置,主要包括:LNG储罐,热管以及连接器,热管直立于LNG储罐内,若干根热管在储罐内均匀布置,相邻热管间通过连接器相互连接。
所述的热管为两端密封的圆筒体,材质为金属,筒体内抽成真空后填充液氮作为工作介质,管壁沿轴向均匀布置有环形翅片。
所述的连接器为长条状结构,材质和热管相同,其中一端焊接固定在热管中部管壁上,自由端开有圆孔,通过在圆孔内安装螺栓实现两临近热管固定连接。
与现有技术相比,本发明具有如下有益效果:
(1)通过热管超强导热性能实现LNG储罐内不同高度液体温度均匀一致,从根本上抑制LNG翻滚现象的发生;
(2)不采用搅拌设备,不会加剧BOG产生;
(3)无运动部件,无需外加动力,不消耗任何能量,节能环保;
(4)无噪声干扰,无污染,无需日常维修养护,能够安全可靠、长期连续的运行。
附图说明:
图1本发明的组成示意图;
图2热管在储罐内布置截面示意图;
图3相邻热管连接示意图;
图4热管结构示意图;
图5热管工作原理图。
具体实施方式:
如图1所示,本发明涉及一种LNG储罐翻滚抑制装置,主要包括:LNG储罐1,热管2以及连接器3,热管2直立于LNG储罐1内,若干根热管2在LNG储罐1内均匀布置,相邻热管间通过连接器3相互连接。
如图2所述的热管2为两端密封的圆筒体,材质为金属,筒体内抽成真空后填充液氮作为工作介质,管壁沿轴向均匀布置有环形翅片4。
热管2靠内部工质的相变和蒸汽流动传输热量,而相变潜热传输效率较对流换热和一般热传导效率要高得多。热管2的上部是冷凝段,下部为蒸发段,当蒸发段温度高于冷凝段温度,其温差超过热管2的启动温差时,蒸发段液膜5吸收汽化潜热蒸发成蒸汽6,在压差作用下,蒸汽6沿管内空腔上升至冷凝段,与相对较冷的管壁接触,放出汽化潜热,冷凝成液体。冷凝段管壁内的液膜5在重力作用下沿管壁回流到蒸发段,再次吸热蒸发,如此往复循环不断将蒸发段热量带出。只要蒸发段与冷凝段间的温差大于热管2的启动温差,这种循环便可连续进行下去。若储罐内温度均匀一致,即位于顶层的冷凝段温度等于底层的蒸发段的温度,热管2内蒸汽6不能冷凝,液膜5停止蒸发,热管2自动停止工作。环形翅片4的功能是增加换热面积,使底部液层热量及时传递到热管2,同时也加速热管2内冷凝段的热量向顶层液体扩散。
所述的连接器3为长条状结构,材质和热管2相同,其中一端固定在热管2中部管壁上,自由端开有圆孔,通过在圆孔内安装螺栓实现临近两热管固定连接。
考虑到单个热管2的作用范围有限,为了保证热量传递及时,若干个热管2通过连接器3相互连接,在LNG储罐1内均匀布置。一旦发生漏热,局部LNG液体吸热导致温度发生变化,其附近热管2迅速启动,通过快速换热将局部热量迅速向周围传递,从而保证整个储罐为等温体。
本发明巧妙利用热管的超强导热能力,LNG储罐1上下两层液体一旦存在温差,热管立即启动,将LNG储罐1下部温度较高的液层热量迅速传到上层液体,使二者温度保持均匀一致,从而从源头上抑制翻滚现象的发生。与现有技术相比,本发明依靠液层温差驱动热管2工作,无机械运动部件,因而无需外加动力,无噪声干扰,无污染,无需日常维修养护,能够安全可靠、长期连续的运行。
Claims (3)
1.一种LNG储罐翻滚抑制装置,其特征在于:主要包括:LNG储罐(1)、热管(2)以及连接器(3),热管(2)直立于LNG储罐(1)内,若干根热管(2)在LNG储罐(1)内均匀布置,相邻热管(2)间通过连接器(3)相互连接。
2.根据权利要求1所述的一种LNG储罐翻滚抑制装置,其特征在于:所述的热管(2)为两端密封的圆筒体,材质为金属,筒体内抽成真空后填充液氮作为工作介质,管壁沿轴向均匀布置有环形翅片(4)。
3.根据权利要求1所述的一种LNG储罐翻滚抑制装置,其特征在于:所述的连接器(3)为长条状结构,材质和热管相同,其中一端焊接固定在热管(2)中部管壁上,自由端开有圆孔,通过在圆孔内安装螺栓实现临近两热管固定连接。
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Cited By (1)
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CN112460840A (zh) * | 2020-04-27 | 2021-03-09 | 钱锡华 | 基于压缩机原理的冷热水一体制取装置 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1489204A (zh) * | 2002-08-02 | 2004-04-14 | 三菱铝株式会社 | 热管装置和热管型换热器 |
CN203687714U (zh) * | 2014-01-23 | 2014-07-02 | 鞍山鞍明实业有限公司 | 一种用于轨道机车的热管散热器 |
CN204460147U (zh) * | 2015-01-20 | 2015-07-08 | 南京工业大学 | 一种热管型蓄热式均温蒸汽发生器 |
CN105953069A (zh) * | 2016-06-30 | 2016-09-21 | 日照海达尔加气设备有限公司 | 一种防止液体翻腾超压的液化天然气储罐 |
KR20160136662A (ko) * | 2015-05-20 | 2016-11-30 | 대우조선해양 주식회사 | 부유식 해양 구조물의 반전현상 방지 장치 및 방법 |
CN206018251U (zh) * | 2016-07-31 | 2017-03-15 | 赛鼎工程有限公司 | 火灾时防止低温液化气储罐内部翻滚超压的安全装置 |
-
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- 2017-03-27 CN CN201710185984.9A patent/CN106813095A/zh active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1489204A (zh) * | 2002-08-02 | 2004-04-14 | 三菱铝株式会社 | 热管装置和热管型换热器 |
CN203687714U (zh) * | 2014-01-23 | 2014-07-02 | 鞍山鞍明实业有限公司 | 一种用于轨道机车的热管散热器 |
CN204460147U (zh) * | 2015-01-20 | 2015-07-08 | 南京工业大学 | 一种热管型蓄热式均温蒸汽发生器 |
KR20160136662A (ko) * | 2015-05-20 | 2016-11-30 | 대우조선해양 주식회사 | 부유식 해양 구조물의 반전현상 방지 장치 및 방법 |
CN105953069A (zh) * | 2016-06-30 | 2016-09-21 | 日照海达尔加气设备有限公司 | 一种防止液体翻腾超压的液化天然气储罐 |
CN206018251U (zh) * | 2016-07-31 | 2017-03-15 | 赛鼎工程有限公司 | 火灾时防止低温液化气储罐内部翻滚超压的安全装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112460840A (zh) * | 2020-04-27 | 2021-03-09 | 钱锡华 | 基于压缩机原理的冷热水一体制取装置 |
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