CN203614934U - 用于油气管网的连续纤维增强热塑性复合管道 - Google Patents

用于油气管网的连续纤维增强热塑性复合管道 Download PDF

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CN203614934U
CN203614934U CN201320697331.6U CN201320697331U CN203614934U CN 203614934 U CN203614934 U CN 203614934U CN 201320697331 U CN201320697331 U CN 201320697331U CN 203614934 U CN203614934 U CN 203614934U
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朱华平
韩晓军
刘尧瑞
丰艳
沃晓剑
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Abstract

本实用新型涉及一种用于油气管网的连续纤维增强热塑性复合管道，包括管道主体，管道主体包括围成管腔的内防护层、设于内防护层周向的连续纤维增强层、以及设于连续纤维增强层周向的外连接层；管道主体周向设有波纹抗压层；连续纤维增强层的材质为连续纤维增强热塑性树脂材料；内防护层、外连接层的材质分别为热塑性树脂材料。本实用新型可满足高压油气输送对管道耐高压、耐腐蚀、大口径的要求。

Description

用于油气管网的连续纤维增强热塑性复合管道
技术领域
本实用新型涉及一种用于油气管网的连续纤维增强热塑性复合管道，属于RTP管道技术领域。
背景技术
目前国内能源消耗日益增加，对进口石油的依赖程度也越来越高，油气输送管道的安全性及使用寿命越来越受到重视。当前高压油气输送要求采用大口径耐高压管道，管道直径在600mm以上，承受的工作压力为5-7MPa；但是受现有技术条件的限制，目前只有增加壁厚的钢管能满足以上要求。然而，我国石油多储存于偏远地区、沙漠地区、以及沼泽地区，钢管无论是在运输上还是在焊接施工上都受到极大的限制，施工费用居高不下；同时，由于受环境中的腐蚀及电化学反应影响，随使用时间增加钢管腐蚀问题会越来越严重。因此亟需研制出耐高压、耐腐蚀的大口径油气输送管道。
据申请人所知，现有技术中已经存在将包覆于塑料中的钢带波纹缠绕于塑料壁外侧以增大管材口径的技术方案。但是这种结构不仅耐压性能较低，而且其口径仍不够大，无法直接用于高压油气输送。
实用新型内容
本实用新型所要解决的技术问题是：克服现有技术存在的问题，提供一种用于油气管网的连续纤维增强热塑性复合管道，满足高压油气输送的耐高压、耐腐蚀、大口径要求。
为解决以上技术问题，本实用新型技术方案如下：
一种用于油气管网的连续纤维增强热塑性复合管道，包括管道主体，其特征是，所述管道主体包括围成管腔的内防护层、设于内防护层周向的连续纤维增强层、以及设于连续纤维增强层周向的外连接层；所述管道主体周向设有波纹抗压层；所述连续纤维增强层的材质为连续纤维增强热塑性树脂材料；所述内防护层、外连接层的材质分别为热塑性树脂材料。
申请人经深入地实践研究发现，上述结构的管道主体在单独使用时虽然能耐高压、耐腐蚀，但是仅限于较小口径，若直接做成600mm以上的大口径管道，在埋地后会在巨大压力作用下出现局部变形，存在安全隐患。申请人经进一步地实践研究发现，在上述结构的管道主体周向加设波纹抗压层可使管道主体在确保耐高压、耐腐蚀的同时增大其口径至600mm以上。
本实用新型进一步完善的技术方案如下：
优选地，所述波纹抗压层呈三明治结构，包括两外层和一芯层；所述外层的材质为热塑性树脂材料，所述芯层的材质为钢带。更优选地，所述外层的材质为PE材料。
申请人经深入地实践研究发现，现有技术的含钢带波纹层无法直接与前述结构的管道主体热塑性复合，只有将其外层改为热塑性树脂材料才能实现这一复合。
优选地，所述波纹抗压层的材质为连续纤维增强热塑性树脂材料。
申请人经深入地实践研究发现，前述结构的波纹抗压层仍然存在与现有技术含钢带波纹层相同的不利之处：（1）波纹层与管道主体复合后的牢固程度较低，在运输过程中容易因外力与管道主体脱离；（2）波纹层本身的防腐性能较低，在使用时容易因腐蚀丧失抗压作用。申请人经过更加深入地实践研究发现，采用由连续纤维增强热塑性树脂材料制成的波纹抗压层后，可很好地解决含钢带波纹层存在的问题，并实现强于钢带波纹层的抗压性能，确保满足高压油气输送的耐高压、耐腐蚀、大口径要求。
优选地，所述波纹抗压层的材质为连续碳纤维增强PET材料或连续碳纤维增强尼龙材料。申请人经实践研究发现，采用该结构的波纹抗压层后可以实现更好地抗压性能。
优选地，所述波纹抗压层与管道主体的外连接层之间还设有粘接介质层。更优选地，所述粘接介质层的材质为PET无纺布或热熔胶。这样可使波纹抗压层与管道主体的连接更加牢固。
优选地，所述波纹抗压层具有的波纹与管道主体的外连接层之间密封有空气层。这样可对管道起到保温作用。
优选地，所述连续纤维增强层由多层连续纤维增强片材交叉重叠复合而成，所述连续纤维增强片材的材质为连续纤维增强热塑性树脂材料。这样可使整个管道具有更好地强度性能。
优选地，所述连续纤维增强层的材质为连续玻璃纤维增强热塑性树脂材料、连续碳纤维增强热塑性树脂材料、连续芳纶纤维增强热塑性树脂材料、连续玄武岩纤维增强热塑性树脂材料之一；或者，所述连续纤维增强层的材质为连续纤维增强PE材料、连续纤维增强PP材料、连续纤维增强PA6材料、连续纤维增强PET材料之一。
本实用新型可满足高压油气输送对管道耐高压、耐腐蚀、大口径的要求。
附图说明
下面结合附图对本实用新型作进一步的说明。
图1为本实用新型实施例1的结构示意图。
图2为图1实施例波纹抗压层与管道主体的连接示意图。
图3为本实用新型实施例2波纹抗压层与管道主体的连接示意图。
具体实施方式
实施例1
如图1、图2所示，本实施例用于油气管网的连续纤维增强热塑性复合管道，包括管道主体，管道主体包括围成管腔1的内防护层2、设于内防护层2周向的连续纤维增强层3、以及设于连续纤维增强层3周向的外连接层4；管道主体周向设有波纹抗压层5；连续纤维增强层3的材质为连续纤维增强热塑性树脂材料；内防护层2、外连接层4的材质分别为热塑性树脂材料。
波纹抗压层5的材质为连续纤维增强热塑性树脂材料。具体而言，波纹抗压层5的材质优选连续碳纤维增强PET材料或连续碳纤维增强尼龙材料。
波纹抗压层5与管道主体的外连接层4之间还设有粘接介质层（图中未示）。粘接介质层的材质为PET无纺布或热熔胶。
波纹抗压层5具有的波纹与管道主体的外连接层4之间密封有空气层6。
连续纤维增强层3由多层连续纤维增强片材交叉重叠复合而成，连续纤维增强片材的材质为连续纤维增强热塑性树脂材料。
连续纤维增强层3的材质为连续玻璃纤维增强热塑性树脂材料、连续碳纤维增强热塑性树脂材料、连续芳纶纤维增强热塑性树脂材料、连续玄武岩纤维增强热塑性树脂材料之一；或者，连续纤维增强层3的材质为连续纤维增强PE材料、连续纤维增强PP材料、连续纤维增强PA6材料、连续纤维增强PET材料之一。
在现有技术中，高压油气输送常采用通径大于600mm且抗拉强度为416MPa的X60钢管。在相同通径下，本实施例复合管道的抗拉强度在500-550MPa，明显优于X60钢管。
此外，相同通径的本实施例复合管道与X60钢管之间的进一步比较如下：
（1）以各相同通径在工作压力5MPa下达到相同抗压性能的本实施例管道和X60钢管的比较，如表1所示：
表1 工作压力5MPa下的比较
Figure BDA0000409123550000041
（2）以各相同通径在工作压力7MPa下达到相同抗压性能的本实施例管道和X60钢管的比较，如表2所示：
表2 工作压力7MPa下的比较
Figure BDA0000409123550000051
与X60管道相比，本实施例复合管道不仅能够有效替代相同大口径的X60管道实施高压油气输送，并且在重量上具有非常明显的优势；同时由于采用的材料以连续纤维和热塑性树脂为主，其成本也明显低于X60管道。
实施例2
如图3所示，本实施例用于油气管网的连续纤维增强热塑性复合管道中，管道主体的结构与实施例1相同，波纹抗压层5的结构则不同于实施例1。
波纹抗压层5呈三明治结构，包括两外层5-1、5-3和一芯层5-2；外层5-1、5-3的材质为热塑性树脂材料（优选PE材料），芯层5-2的材质为钢带。
波纹抗压层5具有的波纹与管道主体的外连接层4之间密封有空气层6。
实验表明，在工作压力5MPa和7MPa下，以相同通径达到相同抗压性能的本实施例复合管道和X60钢管，前者可有效替代后者实施高压油气输送，并且在重量上也具有非常明显的优势，具体优势数据稍逊于实施例1复合管道，此处不再赘述。
在相同通径下，本实施例复合管道的抗拉强度与X60钢管相当，但稍逊于实施例1复合管道。与实施例1相比，本实施例复合管道的优势在于成本更低，可作为经济型的替代技术方案。
以上各实施例中，管道主体各层之间、波纹抗压层与管道主体之间均通过热塑性复合工艺复合在一起。
除上述实施例外，本实用新型还可以有其他实施方式。凡采用等同替换或等效变换形成的技术方案，均落在本实用新型要求的保护范围。

Claims (10)

1.一种用于油气管网的连续纤维增强热塑性复合管道，包括管道主体，其特征是，所述管道主体包括围成管腔的内防护层、设于内防护层周向的连续纤维增强层、以及设于连续纤维增强层周向的外连接层；所述管道主体周向设有波纹抗压层；所述连续纤维增强层的材质为连续纤维增强热塑性树脂材料；所述内防护层、外连接层的材质分别为热塑性树脂材料。
2.根据权利要求1所述用于油气管网的连续纤维增强热塑性复合管道，其特征是，所述波纹抗压层呈三明治结构，包括两外层和一芯层；所述外层的材质为热塑性树脂材料，所述芯层的材质为钢带。
3.根据权利要求2所述用于油气管网的连续纤维增强热塑性复合管道，其特征是，所述外层的材质为PE材料。
4.根据权利要求1所述用于油气管网的连续纤维增强热塑性复合管道，其特征是，所述波纹抗压层的材质为连续纤维增强热塑性树脂材料。
5.根据权利要求4所述用于油气管网的连续纤维增强热塑性复合管道，其特征是，所述波纹抗压层的材质为连续碳纤维增强PET材料或连续碳纤维增强尼龙材料。
6.根据权利要求5所述用于油气管网的连续纤维增强热塑性复合管道，其特征是，所述波纹抗压层与管道主体的外连接层之间还设有粘接介质层。
7.根据权利要求6所述用于油气管网的连续纤维增强热塑性复合管道，其特征是，所述粘接介质层的材质为PET无纺布或热熔胶。
8.根据权利要求7所述用于油气管网的连续纤维增强热塑性复合管道，其特征是，所述波纹抗压层具有的波纹与管道主体的外连接层之间密封有空气层。
9.根据权利要求8所述用于油气管网的连续纤维增强热塑性复合管道，其特征是，所述连续纤维增强层由多层连续纤维增强片材交叉重叠复合而成，所述连续纤维增强片材的材质为连续纤维增强热塑性树脂材料。
10.根据权利要求8所述用于油气管网的连续纤维增强热塑性复合管道，其特征是，所述连续纤维增强层的材质为连续玻璃纤维增强热塑性树脂材料、连续碳纤维增强热塑性树脂材料、连续芳纶纤维增强热塑性树脂材料、连续玄武岩纤维增强热塑性树脂材料之一；或者，所述连续纤维增强层的材质为连续纤维增强PE材料、连续纤维增强PP材料、连续纤维增强PA6材料、连续纤维增强PET材料之一。
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103542189A (zh) * 2013-11-06 2014-01-29 江苏奇一科技有限公司 用于油气管网的连续纤维增强热塑性复合管道及其生产工艺
GB2537902A (en) * 2015-04-30 2016-11-02 M-Flow Tech Ltd Composite Fluid Conduit Assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103542189A (zh) * 2013-11-06 2014-01-29 江苏奇一科技有限公司 用于油气管网的连续纤维增强热塑性复合管道及其生产工艺
GB2537902A (en) * 2015-04-30 2016-11-02 M-Flow Tech Ltd Composite Fluid Conduit Assembly
US10738920B2 (en) 2015-04-30 2020-08-11 M-Flow Technologies Limited Composite fluid conduit assembly

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