CN111594062A - 一种大规格高压活动弯头结构 - Google Patents
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Abstract
本发明公开了一种大规格高压活动弯头结构，包括连接头，弯头和铰接组件，所述连接头和弯头之间、所述弯头与弯头之间通过铰接组件连接，所述连接头用于与上游和下游设备的连接；铰接组件包括密封机构，旋转件和卡箍，所述密封机构用于连接头和弯头之间、所述弯头与弯头之间的密封连接，所述卡箍用于连接头和弯头之间、所述弯头与弯头之间的连接固定，在卡箍与连接头之间或卡箍与弯头之间通过旋转件连接，所述旋转件为滚动轴承或滑动轴承。有益效果：更大通径，柔性连接，体积小、重量轻、成型方式多样化，满足页岩气高压力、大排量的作业需求，大大降低作业设备投入成本，优化现场布局，与上下游设备连接灵活。
Description
技术领域
本发明涉及管汇连接技术领域，具体涉及一种大规格高压活动弯头结构。
背景技术
原有的活动弯头结构一般设计多道沟槽，沟槽内部安装有一定数量的滚动体，实现两端的接头绕着轴线相对转动；每条沟槽中的滚动体从各自的安装孔处安装，每个安装孔设计有塞子和挡圈，防止滚动体在转动过程中散落。这种实现旋转功能的结构体积大、结构复杂、装配困难，对于弯头结构中直段的长度要求高，适用于小规格的活动弯头。当规格增大以后，由于弯头结构的成型方式受限、体积要求受限，采用滚动体实现旋转功能的结构已不再适用。
随着国内、外油气田中页岩气作业的兴起，其高压力、大排量、连续作业的特点对压裂设备的要求越来越严格，为满足页岩气作业需求，电驱压裂逐步兴起并应用，单泵的排量骤增，法兰连接的大通径管汇也应运而生，为了补偿大通径管汇橇之间的距离差，实现不同高度、距离管汇橇之间的柔性连接，避免刚性管线连接带来的巨大冲击和震动，从而导致管汇部件的过早损坏，需要开发一款柔性连接装置，用于大通径管汇橇以及井口管汇之间的连接。
发明内容
本发明的目的克服现有技术的不足，提供一种大规格高压活动弯头结构，通过铰接组件的灵活，快捷，简单，方便的旋转连接，不受管径限制，也不受弯头结构的成型方式限制，使得连接头和弯头可以设置更大通径，连接头和弯头的壁厚也可以灵活设置，该大规格高压活动弯头结构体积小、成型方式多样化，满足页岩气高压力、大排量的作业需求，大大降低作业设备投入成本，优化现场布局；端部采用API 6A标准的法兰连接，替代传统的锤击由壬连接，连接更加可靠，提高了现场作业的安全性；另外，该大规格活动弯头的铰接部位采用卡箍连接，使其实现密封性能的同时，可以完成旋转动作，实现大规格管汇之间的柔性连接。
本发明的目的是通过以下技术措施达到的：一种大规格高压活动弯头结构，包括连接头，弯头和铰接组件，所述连接头和弯头之间、所述弯头与弯头之间通过铰接组件连接，所述连接头用于与上游和下游设备的连接；铰接组件包括密封机构，旋转件和卡箍，所述密封机构用于连接头和弯头之间、所述弯头与弯头之间的密封连接，所述卡箍用于连接头和弯头之间、所述弯头与弯头之间的连接固定，在卡箍与连接头之间或卡箍与弯头之间通过旋转件连接，所述旋转件为滚动轴承或滑动轴承。
进一步地，根据实际的使用需要，连接不同数量的所述连接头和弯头。
进一步地，所述密封机构包括盘根和密封骨架，密封骨架的两端分别伸入相邻的连接头和弯头中或相邻的两个弯头中，在所述连接头和弯头的沉孔中填入盘根，密封骨架用于压紧盘根。
进一步地，当密封骨架压紧盘根时，在所述密封骨架的中间位置轴向延伸形成支撑块，所述铰接组件包括支撑环，在相邻的连接头和弯头两连接端面之间，或在相邻的弯头和弯头两连接端面之间设支撑块和支撑环。
进一步地，所述卡箍内壁上设环形槽，所述支撑环的一端与支撑块接触，所述支撑环的另一端与环形槽接触。
进一步地，所述卡箍内壁设有内锥面，所述内锥面为2个，在连接头端部外壁上和弯头端部外壁上均设有外锥面，当所述连接头与弯头连接时，所述卡箍的内锥面分别与连接头和弯头的外锥面配合使用，当弯头与弯头连接时，所述卡箍的内锥面分别与两个弯头的外锥面配合使用。
进一步地，在所述卡箍内锥面与连接头外锥面之间设旋转件，在所述卡箍内锥面与弯头外锥面之间设旋转件。
进一步地，所述卡箍与弯头之间设有间隙。
进一步地，所述间隙小于等于1毫米。
进一步地，所述卡箍采用分体式结构，所述卡箍采用销轴定位连接，所述卡箍采用螺栓紧固。
进一步地，所述卡箍与连接头之间采用密封连接，所述卡箍与弯头之间采用密封连接。
进一步地，所述连接头的端部采用API法兰与上游和下游设备连接。
进一步地，所述卡箍上设有注油口，所述注油口用于连接头与弯头之间或两个弯头之间相互旋转的润滑。
进一步地，所述弯头为两通接头或三通接头或四通接头或Y型三通接头或岐型三通接头。
进一步地，所述弯头，旋转件和卡箍均采用耐磨材料。
与现有技术相比，本发明的有益效果是：通过铰接组件的灵活，快捷，简单，方便的旋转连接，使得连接头和弯头可以设置更大通径，连接头和弯头的壁厚也可以灵活设置，该大规格高压活动弯头结构体积小、成型方式多样化，满足页岩气高压力、大排量的作业需求，大大降低作业设备投入成本，优化现场布局；端部采用API 6A标准的法兰连接，替代传统的锤击由壬连接，连接更加可靠，提高了现场作业的安全性；另外，该大规格活动弯头的铰接部位采用卡箍连接，使其实现密封性能的同时，可以完成旋转动作，实现大规格管汇之间的柔性连接。在工作过程中，自由旋转可以缓解管路在输送高压、高速流体过程中产生的振动，释放应力。
下面结合附图和具体实施方式对本发明作详细说明。
附图说明
图1是大规格高压活动弯头结构的结构示意图。
图2是图1中铰接组件的放大图。
图3是大规格高压活动弯头结构的另一种实施例示意图。
图4是密封骨架的结构示意图。
其中，1.连接头，2.弯头，3.铰接组件，4.密封圈，5.旋转件，6.支撑环，7.销轴，8.卡箍，9.螺栓，10，密封骨架，11.盘根，12.端部。
具体实施方式
如图1至4所示，一种大规格高压活动弯头结构，包括连接头1，弯头2和铰接组件3，所述连接头1和弯头2之间、所述弯头2与弯头2之间通过铰接组件3连接，所述连接头1用于与上游和下游设备的连接；铰接组件3包括密封机构，旋转件5和卡箍8，所述密封机构用于连接头1和弯头2之间、所述弯头2与弯头2之间的密封连接，所述卡箍8用于连接头1和弯头2之间、所述弯头2与弯头2之间的连接固定，在卡箍8与连接头1之间或卡箍8与弯头2之间通过旋转件5连接，该旋转件5可变形设计为各种形式的滚动轴承或滑动轴承，以降低活动弯头2转动过程中各种形式的摩擦阻力。通过密封机构实现相邻两连接头1和弯头2之间、所述弯头2与弯头2之间的密封连接，通过支撑环6和密封骨架10实现同轴旋转，通过内锥面，外锥面和旋转件5的配合使用实现更好的相对旋转，通过卡箍8实现固定连接。大规格高压活动弯头结构通过铰接组件3的灵活，快捷，简单，方便的旋转连接，使得连接头1和弯头2可以设置更大通径，连接头1和弯头2的壁厚也可以灵活设置，该大规格高压活动弯头结构体积小、成型方式多样化，满足页岩气高压力、大排量的作业需求，大大降低作业设备投入成本，优化现场布局，实现大规格管汇之间的柔性连接。连接头1相对于弯头2的旋转可以更灵活、更快捷的与上游或下游设备的连接，弯头2相对于相邻连接头1、或两个弯头2之间的自由旋转可以缓解管路在输送高压、高速流体过程中产生的振动，释放应力。
根据实际的使用需要，连接不同数量的所述连接头1和弯头2。本技术方案中，连接头1分别设在该大规格高压活动弯头结构的两端，在两个连接头1之间，根据实际的需要连接不同数量的弯头2，当正常连接好之后，大规格高压活动弯头结构中的每个弯头2都可以在旋转件5的辅助作用下，相对旋转，不同数量的弯头2组合形式可形成不同的布局和形状，本附图中的1和3仅为其中的两种实施例。
本技术方案中，铰接组件3是该大规格高压活动弯头结构的重要机构，该铰接处可以绕中心轴线360°自由旋转，实现管汇连接方向的改变，不同数量的组合形式可实现各种各样的管汇形式连接，在工作过程中，自由旋转可以缓解管路在输送高压、高速流体过程中产生的振动，释放应力。
所述密封机构包括盘根11和密封骨架10，密封骨架10的两端分别伸入相邻的连接头1和弯头2中或相邻的两个弯头2中，在所述连接头1和弯头2的沉孔中填入盘根11，密封骨架10用于压紧盘根11。盘根11为弹性密封件，能防止大规格高压活动弯头结构的通径内部介质泄漏。密封骨架10在装配紧固后，压缩盘根11从而实现相邻连接头1和弯头2之间、相邻两弯头2之间的密封，并为相邻连接头1和弯头2，或相邻两个弯头2实现导向和定位，保证同轴安装和同轴旋转。
当密封骨架10压紧盘根11时，在所述密封骨架10的中间位置轴向延伸形成支撑块，所述铰接组件3包括支撑环6，在相邻的连接头1和弯头2两连接端面之间，或在相邻的弯头2和弯头2两连接端面之间设支撑块和支撑环6。支撑块和支撑环6保证了相邻的连接头1和弯头2、相邻的弯头2和弯头2在旋转时，是同轴旋转。
所述卡箍8内壁上设环形槽，所述支撑环6的一端与支撑块接触，所述支撑环6的另一端与环形槽接触并且支撑环6定位于卡箍8的环形槽中，为两个弯头2和密封骨架10，或为连接头1，弯头2和密封骨架10，提供支撑和定位，平分间隙。
所述卡箍8内壁设有内锥面，所述内锥面为2个，2个内锥面对称分布，内锥面可设计为25°或其他更适合的角度。在连接头1端部12外壁上和弯头2端部12外壁上均设有外锥面，当所述连接头1与弯头2连接时，所述卡箍8的内锥面分别与连接头1和弯头2的外锥面配合使用，当弯头2与弯头2连接时，所述卡箍8的内锥面分别与两个弯头2的外锥面配合使用。
在所述卡箍8内锥面与连接头1外锥面之间设旋转件5，在所述卡箍8内锥面与弯头2外锥面之间设旋转件5。
所述卡箍8与弯头2之间设有间隙。所述间隙小于等于1毫米，可以实现弯头2绕着卡箍8中心轴线360°自由旋转。
所述卡箍8采用分体式结构，所述卡箍8采用销轴7定位连接，如圆柱销，
通过圆柱销实现定位，配对加工和使用，使得分体式卡箍8安装更快捷。
所述卡箍8采用螺栓9紧固。
所述卡箍8与连接头1之间采用密封连接，所述卡箍8与弯头2之间采用密封连接。正常使用时，在卡箍8的内壁两端分别开设有环形密封槽，在环形密封槽中填充有密封圈4，如O型圈，阻止外部杂质或灰尘进入铰接组件3。
所述连接头1的端部12采用API法兰与上游和下游设备连接。API法兰具有通用性和互换性，可直接与油气田用其他同类设备无缝连接。
所述卡箍8上设有注油口，所述注油口用于连接头1与弯头2之间或两个弯头2之间相互旋转的润滑，降低旋转阻力。可以在卡箍8，旋转件5，支撑环6和弯头2等部件上设油路，当然在相邻连接的相互旋转的部件，有一个油路就可以满足旋转润滑要求。
为了适用于不同场合，所述弯头2为两通接头或三通接头或四通接头或Y型三通接头或岐型三通接头，使得大规格高压活动弯头2结构具有更广的适用性。
当活动弯头2旋转时，卡箍8、旋转件5、弯头2之间发生相对旋转运动，为尽可能提高产品的使用寿命，所述弯头2，旋转件5和卡箍8均采用耐磨材料。
本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。
Claims (15)
1.一种大规格高压活动弯头结构，其特征在于：包括连接头，弯头和铰接组件，所述连接头和弯头之间、所述弯头与弯头之间通过铰接组件连接，所述连接头用于与上游和下游设备的连接；铰接组件包括密封机构，旋转件和卡箍，所述密封机构用于连接头和弯头之间、所述弯头与弯头之间的密封连接，所述卡箍用于连接头和弯头之间、所述弯头与弯头之间的连接固定，在卡箍与连接头之间或卡箍与弯头之间通过旋转件连接，所述旋转件为滚动轴承或滑动轴承。
2.根据权利要求1所述的大规格高压活动弯头结构，其特征在于：根据实际的使用需要，连接不同数量的所述连接头和弯头。
3.根据权利要求1或2所述的大规格高压活动弯头结构，其特征在于：所述密封机构包括盘根和密封骨架，密封骨架的两端分别伸入相邻的连接头和弯头中或相邻的两个弯头中，在所述连接头和弯头的沉孔中填入盘根，密封骨架用于压紧盘根。
4.根据权利要求3所述的大规格高压活动弯头结构，其特征在于：当密封骨架压紧盘根时，在所述密封骨架的中间位置轴向延伸形成支撑块，所述铰接组件包括支撑环，在相邻的连接头和弯头两连接端面之间，或在相邻的弯头和弯头两连接端面之间设支撑块和支撑环。
5.根据权利要求4所述的大规格高压活动弯头结构，其特征在于：所述卡箍内壁上设环形槽，所述支撑环的一端与支撑块接触，所述支撑环的另一端与环形槽接触。
6.根据权利要求1所述的大规格高压活动弯头结构，其特征在于：所述卡箍内壁设有内锥面，所述内锥面为2个，在连接头端部外壁上和弯头端部外壁上均设有外锥面，当所述连接头与弯头连接时，所述卡箍的内锥面分别与连接头和弯头的外锥面配合使用，当弯头与弯头连接时，所述卡箍的内锥面分别与两个弯头的外锥面配合使用。
7.根据权利要求6所述的大规格高压活动弯头结构，其特征在于：在所述卡箍内锥面与连接头外锥面之间设旋转件，在所述卡箍内锥面与弯头外锥面之间设旋转件。
8.根据权利要求1所述的大规格高压活动弯头结构，其特征在于：所述卡箍与弯头之间设有间隙。
9.根据权利要求8所述的大规格高压活动弯头结构，其特征在于：所述间隙小于等于1毫米。
10.根据权利要求1所述的大规格高压活动弯头结构，其特征在于：所述卡箍采用分体式结构，所述卡箍采用销轴定位连接，所述卡箍采用螺栓紧固。
11.根据权利要求1所述的大规格高压活动弯头结构，其特征在于：所述卡箍与连接头之间采用密封连接，所述卡箍与弯头之间采用密封连接。
12.根据权利要求1所述的大规格高压活动弯头结构，其特征在于：所述连接头的端部采用API法兰与上游和下游设备连接。
13.根据权利要求1所述的大规格高压活动弯头结构，其特征在于：所述卡箍上设有注油口，所述注油口用于连接头与弯头之间或两个弯头之间相互旋转的润滑。
14.根据权利要求1所述的大规格高压活动弯头结构，其特征在于：所述弯头为两通接头或三通接头或四通接头或Y型三通接头或岐型三通接头。
15.根据权利要求1所述的大规格高压活动弯头结构，其特征在于：所述弯头，旋转件和卡箍均采用耐磨材料。
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| CN114183602A (zh) * | 2021-11-01 | 2022-03-15 | 烟台杰瑞石油装备技术有限公司 | 连接装置及柔性管 |
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