CN107921727B - 多孔玻璃绝缘下腐蚀体系 - Google Patents

多孔玻璃绝缘下腐蚀体系 Download PDF

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CN107921727B
CN107921727B CN201680046627.8A CN201680046627A CN107921727B CN 107921727 B CN107921727 B CN 107921727B CN 201680046627 A CN201680046627 A CN 201680046627A CN 107921727 B CN107921727 B CN 107921727B
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foam
insulation system
cellular glass
corrosion under
glass corrosion
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CN107921727A (zh
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S·R·拜吉尔
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Owens Corning Intellectual Capital LLC
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    • B32—LAYERED PRODUCTS
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    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
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    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
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    • F16L58/04—Coatings characterised by the materials used
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    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
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    • F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • F16L59/021—Shape or form of insulating materials, with or without coverings integral with the insulating materials comprising a single piece or sleeve, e.g. split sleeve, two half sleeves
    • F16L59/025—Shape or form of insulating materials, with or without coverings integral with the insulating materials comprising a single piece or sleeve, e.g. split sleeve, two half sleeves with more then two segments
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    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
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    • F16L59/04—Arrangements using dry fillers, e.g. using slag wool which is added to the object to be insulated by pouring, spreading, spraying or the like
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    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems
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Abstract

用于管道外表面的多孔玻璃体系。绝缘层包围管道的外表面。该绝缘层具有外表面和内表面，且包括多孔玻璃。泡沫材料填充管道外表面和绝缘层内表面之间的环形空间，且被构造为限制水侵入到环形空间内和消音。该体系也可包括另一绝缘层和在两层绝缘层之间的另一泡沫材料层。

Description

多孔玻璃绝缘下腐蚀体系
相关申请的交叉参考
根据35U.S.C.§119(e)，本申请要求2015年7月7日提交的较早申请日的美国临时专利申请No.62/189,442的权益，其公开内容在本文中通过参考引入。
背景技术
本申请公开了一项发明，其一般地和在各种实施方案中，涉及多孔玻璃绝缘体系。
可将多孔玻璃制成用于各种应用的部件(sections)，例如绝缘工业和商业管道，以及绝缘容器。在绝缘的同时，这些应用提供能量保存或工艺控制所必需的目的，但可能产生其他问题。例如，在其中允许湿气在多孔玻璃绝缘体和典型地由金属制造的管道或容器之间迁移的多孔玻璃绝缘下可出现绝缘下的腐蚀(corrosion under insulation)(CUI)。适于CUI的温度范围通常出现在32°F和400°F之间。这包括多孔玻璃绝缘下捕获且不被允许蒸发或者从体系中去除的液态水。
发明内容
根据本发明的实施方案，使用泡沫材料，填充多孔玻璃绝缘体和被绝缘的管道或容器之间的环形空间。当在环形空间内压缩时，泡沫材料限制了湿气在多孔玻璃绝缘体表面以下侵入，进而没有或者大大地减少CUI的风险。所使用的优选泡沫材料(foam)组合物在CUI温度范围内将不降解。另外，泡沫材料和多孔玻璃绝缘体系具有若干其他关键特性，其中包括声音的衰减。特别地，可在金属和多孔玻璃绝缘体的环形空间处，在多孔玻璃绝缘体的内层和外层之间任意一处，或者在该环形空间处以及在多孔玻璃绝缘体的各层之间这两处，放置泡沫材料。另外，可改性产品密度，产生所需的消音性能。
附图说明
对于要清楚地理解和容易地实践的本发明来说，结合下述附图描述本发明，其中相类同的参考标记表示相同或类似的元件，所述附图引入说明书中并构成说明书的一部分，其中：
图la是单层体系的透视图。
图lb是单层体系的端视图，所述单层体系具有带弯曲1/4片段的单一多孔玻璃绝缘层。
图lc是单层体系的端视图，所述单层体系具有带弯曲1/2片段的单一多孔玻璃绝缘层。
图2a是双层体系的透视图。
图2b是双层体系的端视图，所述双层体系具有带弯曲1/4片段的两层多孔玻璃绝缘层。
图2c是双层体系的端视图，所述双层体系具有带弯曲1/2片段的两层多孔玻璃绝缘层。
详细说明
参考图1a至1c，示出了一般地用参考数字10表示的单层多孔玻璃绝缘体系用于具有多孔玻璃绝缘层14的管道12。管道和多孔玻璃绝缘体的环形空间或界面16在管道12的外表面18和多孔玻璃绝缘层14的内表面20之间。泡沫材料22填充管道和多孔玻璃绝缘体界面16。泡沫材料22限制水侵入到管道和多孔玻璃绝缘体界面16内且消音。优选的泡沫材料在应用温度范围内不降解。例举的泡沫材料包括有机硅海绵，有机硅泡沫材料，聚酰亚胺泡沫材料，腈类泡沫材料，和三聚氰胺泡沫材料。当选择泡沫材料时，主要的考虑因素是泡沫材料的可压缩性。使用ASTM D 1056试验工序，在25％压缩下，泡沫材料应当具有小于2psi的压缩力。理想地，根据这一试验，在小于1psi下，该泡沫材料具有25％的压缩力额定值(rating)。这一性能重要，因为它确定了管道的硬质金属和多孔玻璃绝缘层之间泡沫材料的可压缩性。难以压缩的泡沫材料不会按所期望的那样的性能表现。泡沫材料22可以是开孔或闭孔的。若泡沫材料是开孔的，则它必须压缩到显著限制湿气在多孔玻璃绝缘层下方迁移的程度，或者它必须包括另一CUI缓和性能，例如疏水物，腐蚀抑制剂，或耐水性涂层/面漆。泡沫材料22可含有耐水层23(图1b)，例如铝箔，不锈钢箔，或其他喷雾施加的产品。喷雾施加的产品的实例是聚氨酯或有机硅涂层。另外，该泡沫材料可含有疏水物，以限制湿气迁移通过泡沫材料和/或腐蚀抑制剂。腐蚀抑制剂或者浸渍在泡沫材料内或者喷洒在与金属接触的表面上。
也可放置泡沫材料22以消音。对于所选泡沫材料来说，必须测试消音性能，但测试表明在硬质多孔玻璃绝缘层和管道的金属之间放置的泡沫材料会降低和衰减声级。利用多层泡沫材料和多孔玻璃绝缘层将得到改进的性能。另外，利用具有较高密度的多孔玻璃绝缘层(8-15pcf)和泡沫材料将提供针对低频声音改进的性能。多孔玻璃绝缘层14和泡沫材料22可以或者实地施加或者在项目位置处安装之前施加。
第一多孔玻璃绝缘层14可以或者是弯曲的片段，例如图1b所示的1/4片段24或者两个1/2蚌壳，例如图1c中所示的1/2片段26。在片段24,26的边缘之间的接头28可以用密封剂30，例如有机硅密封。
参考图2a至2c，阐述了一般地用参考数字100表示的双层多孔玻璃绝缘体系用于具有第一多孔玻璃绝缘层140和第二多孔玻璃绝缘层141的管道120。管道和多孔玻璃绝缘体界面160在管道120的外表面180和第一多孔玻璃绝缘层140的内表面200之间。第一泡沫材料220填充管道和多孔玻璃绝缘界面160。多孔玻璃绝缘层界面161在第一多孔玻璃绝缘层140的外表面181和第二多孔玻璃绝缘层141的内表面201之间。第二泡沫材料221填充多孔玻璃绝缘层的界面161。与图1b和1c的实施方案类似，多孔玻璃绝缘层140和141可以或者具有弯曲的片段，例如图2b所示的1/4片段240或者两个1/2蚌壳，例如图2c所示的1/2片段260。旋转接头280，使得在多孔玻璃绝缘层140和141上的接头280不在相同的径向位置上，但彼此偏置。与图1b和1c的实施方案类似，图2a和2b的实施方案可包括在接头280内的密封剂300和在泡沫材料220上的耐水层230。
尽管为了阐述的目的，详细地描述了本发明，但要理解，这种细节仅仅是为了该目的，和可在没有脱离本发明的精神和范围的情况下，由本领域技术人员在其内做出改变。

Claims (13)

1.用于管道外表面的多孔玻璃绝缘下腐蚀体系，其包括：
具有围绕管道外表面位置的带有弯曲的半环形片段的第一绝缘层，其中第一绝缘层具有外表面和内表面，其中第一绝缘层包括多孔玻璃；
在管道的外表面和第一绝缘层的内表面之间的第一环形空间；和
为限制水侵入到环形空间内并消音而构造的在第一环形空间内压缩的第一泡沫材料。
2.权利要求1的多孔玻璃绝缘下腐蚀体系，进一步包括：
围绕第一绝缘层的外表面的第二绝缘层，其中第二绝缘层具有外表面和内表面，其中第二绝缘层包括多孔玻璃；
在第一绝缘层的外表面和第二绝缘层的内表面之间的第二环形空间；
为限制水侵入到环形空间内和消音而构造的在第二环形空间内压缩的第二泡沫材料。
3.权利要求1的多孔玻璃绝缘下腐蚀体系，其中弯曲的半环形片段是1/4片段。
4.权利要求1的多孔玻璃绝缘下腐蚀体系，其中弯曲的半环形片段是1/2片段。
5.权利要求1的多孔玻璃绝缘下腐蚀体系，进一步包括在弯曲的半环形片段之间的接头，其中该接头用密封剂封闭。
6.权利要求2的多孔玻璃绝缘下腐蚀体系，其中第二绝缘层包括弯曲的半环形片段。
7.权利要求6的多孔玻璃绝缘下腐蚀体系，其中弯曲的半环形片段是1/4片段。
8.权利要求6的多孔玻璃绝缘下腐蚀体系，其中弯曲的半环形片段是1/2片段。
9.权利要求2的多孔玻璃绝缘下腐蚀体系，其中所述第一泡沫材料和所述第二泡沫材料中至少之一由具有在25％压缩下具有小于2psi的压缩力的材料构成。
10.权利要求1的多孔玻璃绝缘下腐蚀体系，其中泡沫材料是闭孔的。
11.权利要求1的多孔玻璃绝缘下腐蚀体系，其中泡沫材料是开孔的。
12.权利要求1的多孔玻璃绝缘下腐蚀体系，进一步包括在第一泡沫材料上的耐水层。
13.权利要求1的多孔玻璃绝缘下腐蚀体系，其中泡沫材料包括选自有机硅海绵，有机硅泡沫材料，聚酰亚胺泡沫材料，腈类泡沫材料和三聚氰胺泡沫材料中的材料。
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