CN115991350A - 用于储存液化流体的低温罐 - Google Patents
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Abstract
本发明涉及用于储存液化流体的低温罐,其包括界定液化流体储存容积的内壳(2)和以间隔开的方式围绕内壳(2)布置的外壳(3),内壳(2)和外壳(3)之间的空间包括绝热材料,内壳(2)和外壳(3)在两个纵向端部之间沿纵向方向(A)延伸,罐(1)包括用于将内壳保持在外壳中的结构,该保持结构由内壳(2)的第一纵向端部与外壳(3)的第一纵向端部之间的第一机械连接部(5)以及内壳(2)的第二纵向端部和外壳(3)的第二纵向端部之间的第二机械连接部(6)组成,第一机械连接部包括截锥体形的第一支承壁(5),其较大直径端部与外壳刚性地连接,其较小直径端部与内壳连接,其特征在于,第二机械连接部包括截锥体形的第二支承壁,其较大直径端部与外壳刚性地连接,其较小直径端部与内壳连接。
Description
技术领域
本发明涉及一种用于储存液化流体的低温罐。
更具体地,本发明涉及一种用于储存液化流体的低温罐,其包括界定液化流体储存容积的内壳和以间隔方式围绕内壳布置的外壳,所述内壳和外壳之间的空间包括绝热材料,内壳和外壳在两个纵向端部之间沿纵向方向延伸,罐包括用于将内壳保持在外壳中的结构,该保持结构由内壳的第一纵向端部与外壳的第一纵向端部之间的第一机械连接部以及内壳的第二纵向端部与外壳的第二纵向端部之间的第二机械连接部组成,第一机械连接部包括大致截锥体形的第一支承壁,其较大直径端与外壳刚性地连接,其较小直径端与内壳连接。
例如,本发明涉及固定或移动罐,特别是用于运输液化空气气体(例如,氦或氢)、液化天然气或任何其它流体或混合物的低温半挂车。
背景技术
双壳低温罐的制造在壳的组装时需要非常小心,特别是在将内壳保持在外壳中时。该结构必须限制热量进入内部,同时适应在热构型(环境温度下的罐)与冷构型(例如低于-150℃的低温下的内罐)之间切换时部件的相对膨胀/收缩)。此外,该结构必须能够承受和吸收力。
已知的解决方案不能以最佳方式满足所有这些要求。
发明内容
本发明的一个目的是克服上述现有技术的全部或部分缺陷。
为此,根据本发明或者根据以上序言中给出的通用定义的低温罐的主要特征在于第二机械连接部包括大致截锥体形的第二支承壁,其较大直径端部与外壳刚性地连接,其较小直径端与内壳连接。
此外,本发明的实施例可以具有以下特征中的一个或多个:
-用于将内壳保持在外壳中的结构由第一支承壁和第二支承壁形成,
-第一支承壁相对于纵向方向倾斜0度到30度之间、优选5度的角度,
-第二支承壁相对于纵向方向倾斜60度到89度之间、优选85度的角度,
-第一支承壁以这样的方式定向,即截锥体在朝向第二纵向端部的方向上会聚,
-第二支承壁以这样的方式定向,即截锥体在朝向第二纵向端部的方向上会聚,
-第二支承壁构成两个壳之间比第一支承壁更易变形的机械连接部,也就是说,第二支承壁构造成使得,在两个壳之间的温差产生壳的相对收缩或膨胀期间,它允许两个壳之间在第二端部处的相对纵向移动,该相对移动大于第一支承壁的变形所允许的两个壳之间在第一端部处的相对纵向移动,
-内壳和外壳各自都包括沿纵向方向延伸的具有圆形截面的圆筒形部分,其两端由圆顶形式的壁封闭,支承壁的端部与圆筒形部分刚性地连接,
-支承壁的厚度在1mm到5mm之间,优选在1mm到3mm之间,
-在罐的使用构型中,纵向方向为水平方向。
本发明还可以涉及在权利要求的范围内包括以上或以下特征的任何组合的任何替代装置或方法。
附图说明
在阅读以下参考附图给出的描述后,更多特定特征和优点将变得显而易见,在附图中:
图1表示在竖直和纵向截面中的示意性和局部视图,示出了本发明的一个可能的实施例的示例,
图2表示图1的示例性实施例的罐的第一端部的细节B的截面图,
图3表示图1的示例性实施例的罐的第二端部的细节A的截面图,
图4表示图1的示例性实施例的罐的第一端部的示意性透视图,
图5表示图1的示例性实施例的罐的第二端部的示意性透视图。
具体实施方式
通过示例的方式示出的用于储存液化流体的低温罐1包括界定液化流体储存容积的内壳2和以间隔开的方式围绕内壳2布置的外壳3。
内壳2和外壳3之间的空间包括绝热材料4,例如多层类型(“MLI”)的绝热材料。该空间优选保持在真空下。
内壳2和外壳3在两个纵向端部之间沿纵向方向A延伸。
在罐1的使用构型中,该纵向方向A优选为水平的(卧式罐)。
罐1优选呈圆筒形(圆筒形部分在两端由圆顶形式的弯曲壁封闭)。
罐1包括用于将内壳2保持(或支承)在外壳3中的结构。该保持结构由分别位于两个纵向端部的两个连接部组成(并且优选地由其形成)。保持结构包括在内壳2的第一纵向端部与外壳3的第一纵向端部之间的第一机械连接部5,以及在内壳2的第二纵向端部与外壳3的第二纵向端部之间的第二机械连接部6。
第一机械连接部包括大致截锥体形状的第一支承壁5,其较大直径端部与外壳3刚性地连接并且其较小直径端部与内壳2连接。
第一支承壁5优选地相对于纵向方向A倾斜0度(优选大于零)到30度之间并且优选为5度的角度。
第二机械连接部包括大致截锥体形状的第二支承壁6,其较大直径端部与外壳3刚性地连接并且其较小直径端部与内壳2连接。
第二支承壁6优选地相对于纵向方向倾斜60度到89度之间并且优选为85度的角度。
如所示的,第一支承壁5优选地以这样的方式定向,即截锥体在朝向第二纵向端部的方向上会聚(在示意表示中朝向左侧)。
第二支承壁6优选地以这样的方式定向,即截锥体在朝向第二纵向端部的方向上会聚。
优选地,第二支承壁6构成两个壳2、3之间比第一支承壁5(相对更刚性的连接部)更易变形的连接部(相对更柔性的连接部)。也就是说,第二支承壁6构造成使得,在两个壳2、3之间的温差产生壳2、3的相对收缩或膨胀期间,它允许两个壳2、3之间在第二端部处的相对纵向移动大于第一支承壁5所允许的在第一端部处的相对纵向移动。
可以通过调整壁5、6的相对取向(倾斜度)和/或它们的尺寸(特别是厚度)和/或它们的材料来选择这些相对的柔性或刚性程度。
因此,内壳2可以由两个锥形壁5、6支承在外壳3中,锥形壁5、6中的一个相对更易变形并且特别是构造成在冷却的内壳2的相对收缩期间变形。这种变形构造成使得可以吸收两个壳2、3的相对尺寸的变化而不损害内壳在外壳3中的保持并且不影响绝热。
特别地,这种结构允许第二支承壁6的变形接近于内壳2的相对纵向收缩(并且允许内壳2的这种收缩)。
第二支承壁6可以例如由钢形成,例如304或316型不锈钢。
当用低温液体充填内壳2时,第二壁6上将经历的热梯度(从外部环境温度到内部低温液体的温度:例如在-269℃到-180℃之间)将使得可以在第二端部处伴随内壳2的热收缩,而第一端部(在第一连接部5处,视为固定点)将经历零或更小的变形。在其收缩期间,内壳2(连接到内壳2的至少一个端部)将朝向第一(相对固定)端部相对地纵向移动。
注意,上面使用的术语“柔性”不一定意味着第二壁6本质上是“柔性的”。具体而言,锥形几何结构与扁平金属板相比本质上是相对刚性的。另一方面,该第二支承壁6构造成响应于温度变化而变形(纵向移动),同时允许抵抗径向力。特别地,第二支承壁6因此能够并且构造成在径向(横向)方向上保持足够的刚度以吸收所述力。
因此,该第一连接部5是关于热力学的固定点。该第一连接部优选地构造成:
-传递径向(竖直和横向)力(例如在两个壳2、3之间),
-传递纵向力(例如2g的加速度)(例如在两个壳2、3之间)。
在其变形期间,例如,第二壁6可以倾斜成稍微靠近纵向方向A。
至少第一支承壁5可由一个或多个组装部件形成,例如两个焊接的刚性半锥体(例如由不锈钢制成,例如304或316型不锈钢)。两个半锥体形式的结构特别是可以在安装期间使内壳2在外壳3中居中。
如所示的,第一支承壁5与外壳3之间的连接部可以被紧固(焊接)在非常靠近外壳3的端壁(端部)处,优选地在壳2、3的圆筒形部分处,例如在壁间管道(为简化起见未示出)附近。
同样,第二支承壁6可以被紧固(焊接)在非常靠近内壳2的端壁(端部)处。
注意,用于将内壳2保持在外壳3中的结构优选地由第一支承壁5和第二支承壁6形成。也就是说,优选地,不存在用于支承内壳2的其它结构。然而,可以设想一个或多个其它另外的连接件(例如拉杆)。
此外,罐可以在壳2、3之间包括连接元件,特别是用于壳2、3之间的管道的通过或引导(但这些元件不一定确保与两个壁5、6的支承功能相当的支承功能)。
注意,支承壁的形状被指定为“大致截锥体形”。这意味着所讨论的壁事实上可以呈截锥体形式。然而,可以设想任何其它类似的形状,特别是类似于圆锥的弯曲形状。
Claims (10)
1.一种用于储存液化流体的低温罐,包括界定液化流体储存容积的内壳(2)和以间隔开的方式围绕内壳(2)布置的外壳(3),所述内壳(2)和外壳(3)之间的空间包括绝热材料(4),所述内壳(2)和外壳(3)在两个纵向端部之间沿纵向方向(A)延伸,所述罐(1)包括用于将所述内壳(2)保持所述外壳(3)中的结构,所述保持结构由所述内壳(2)的第一纵向端部与所述外壳(3)的第一纵向端部之间的第一机械连接部(5)以及所述内壳(2)的第二纵向端部与所述外壳(2)的第二纵向端部之间的第二机械连接部(6)组成,所述第一机械连接部包括大致截锥体形的第一支承壁(5),其较大直径端部与所述外壳(3)刚性地连接,其较小直径端部与所述内壳(2)连接,其特征在于,所述第二机械连接部包括大致截锥体形的第二支承壁(6),其较大直径端部与所述外壳(3)刚性地连接,其较小直径端与所述内壳(2)连接。
2.根据权利要求1所述的罐,其特征在于,所述用于将内壳(2)保持在外壳(3)中的结构由所述第一支承壁(5)和所述第二支承壁(6)形成。
3.根据权利要求1或2所述的罐,其特征在于,所述第一支承壁(5)相对于纵向方向倾斜0度到30度之间、优选5度的角度。
4.根据权利要求1至3中任一项所述的罐,其特征在于,所述第二支承壁(6)相对于纵向方向倾斜60度到89度之间、优选85度的角度。
5.根据权利要求1至4中任一项所述的罐,其特征在于,所述第一支承壁(5)以这样的方式定向,即截锥体在朝向所述第二纵向端部的方向上会聚。
6.根据权利要求1至5中任一项所述的罐,其特征在于,所述第二支承壁(6)以这样的方式定向,即截锥体在朝向所述第二纵向端部的方向上会聚。
7.根据权利要求1至6中任一项所述的罐,其特征在于,所述第二支承壁(6)构成所述两个壳(2,3)之间比所述第一支承壁(5)更易变形的机械连接部,也就是说,所述第二支承壁(6)构造成使得,在所述两个壳(2,3)之间的温差产生所述壳(2,3)的相对收缩或膨胀期间,它允许所述两个壳(2,3)之间在所述第二端部处的相对纵向移动,该相对移动大于所述第一支承壁(5)的变形所允许的所述两个壳(2,3)之间在第一端部处的相对纵向移动。
8.根据权利要求1至6中任一项所述的罐,其特征在于,所述内壳(2)和外壳(3)各自都包括沿纵向方向(A)延伸的具有圆形截面的圆筒形部分,所述圆筒形部分的两端通过圆顶形式的壁封闭,所述支承壁(5,6)的端部与所述圆筒形部分刚性地连接。
9.根据权利要求1至8中任一项所述的罐,其特征在于,所述支承壁(5,6)的厚度在1mm到5mm之间,优选在1mm到3mm之间。
10.根据权利要求1至9中任一项所述的罐,其特征在于,在所述罐(1)的使用构型中,所述纵向方向(A)是水平的。
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FR2111123A FR3128273B1 (fr) | 2021-10-20 | 2021-10-20 | Réservoir cryogénique de stockage de fluide liquéfié |
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EP (1) | EP4170222B1 (zh) |
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US2858136A (en) * | 1954-02-23 | 1958-10-28 | Air Reduction | Transport container for liquefied gases |
US3037657A (en) * | 1958-03-03 | 1962-06-05 | Robert S Hampton | Conical support for jacketed vessel |
DE2942164C3 (de) * | 1979-10-18 | 1982-03-25 | Kernforschungsanlage Jülich GmbH, 5170 Jülich | Wandabstützung von Doppelwandbehältern, insbesondere von Dewar-Gefäßen und damit versehene Behälter |
US4496073A (en) * | 1983-02-24 | 1985-01-29 | The Johns Hopkins University | Cryogenic tank support system |
DD261635A1 (de) * | 1987-06-01 | 1988-11-02 | Leipzig Chemieanlagen | Lagerung fuer doppelwandige, waermeisolierte behaelter |
WO2017190846A1 (de) * | 2016-05-04 | 2017-11-09 | Linde Aktiengesellschaft | Transportbehälter |
RU2709750C1 (ru) * | 2019-06-26 | 2019-12-19 | Акционерное общество "Уралкриомаш" | Резервуар для криогенных жидкостей |
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KR20230057272A (ko) | 2023-04-28 |
EP4170222A1 (fr) | 2023-04-26 |
FR3128273A1 (fr) | 2023-04-21 |
FR3128273B1 (fr) | 2023-09-01 |
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