WO2018000538A1 - 无人船载管线维修夹具 - Google Patents

无人船载管线维修夹具 Download PDF

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Publication number
WO2018000538A1
WO2018000538A1 PCT/CN2016/095104 CN2016095104W WO2018000538A1 WO 2018000538 A1 WO2018000538 A1 WO 2018000538A1 CN 2016095104 W CN2016095104 W CN 2016095104W WO 2018000538 A1 WO2018000538 A1 WO 2018000538A1
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Prior art keywords
flange
pipe
unmanned ship
clamp
jig according
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PCT/CN2016/095104
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English (en)
French (fr)
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杨越
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杨越
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Publication of WO2018000538A1 publication Critical patent/WO2018000538A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
    • F16L55/17—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose

Definitions

  • the invention relates to a maintenance tool, in particular to a pipeline maintenance fixture carried by an unmanned ship in maintenance of a submarine oil and gas pipeline.
  • Fixture repair is to install fasteners-clamps outside the pipeline at the leaking site to achieve the purpose of repairing pipeline leaks.
  • the fixture repair technology is now mature in the maintenance of land and submarine oil and gas pipelines, according to the fixture maintenance technology in the submarine oil and gas pipelines.
  • the most critical component in current maintenance technology is the subsea plumbing fixture.
  • Most of the clamps are made in two halves and are fixed to the pipe by bolting or welding, so they can be divided into welded and bolted. Welded clamps improve repair reliability and bolted connections are more convenient.
  • the current method is to install and repair underwater submersibles in Repulse Bay.
  • the submarine pipelines are referred to the working vessels, and the pipeline damages are pretreated directly on the working vessels. Fix the fixture to the pipe.
  • the above two methods have obvious drawbacks. Due to the need to arrange support ships, personnel, maintenance equipment and other auxiliary equipment to the maintenance site, and after the operation is completed, support ships, personnel, maintenance equipment and The recovery of other auxiliary equipment is therefore costly and economical.
  • the fixtures of domestic manufacturers are mainly used in terrestrial oil and gas pipelines. When used for temporary maintenance, the oil and gas pipelines can be normally sealed for 2-3 months to ensure that oil and gas are not leaked at the seals around the clamps. For permanent maintenance, the fixtures can be used. The pipes are welded together in one piece. Domestic manufacturers have not yet produced equipment for submarine oil and gas pipeline fixtures. The technology of home equipment for foreign submarine oil and gas pipelines is relatively mature. With the rapid development of unmanned ship technology, the development of some special structure fixtures is carried on unmanned ships. In the case of staffing, the repair of the submarine pipeline can be completed by using unmanned ships and maintenance fixtures and appropriate auxiliary equipment, without the need to lift the pipeline to the unmanned ship for pre-treatment, saving time and economic costs.
  • an unmanned ship-line maintenance fixture comprising: a double semi-circular clamp unit, the two clamp units being located at opposite positions on the flange and connected by a double-headed screw and a nut, each The clamp unit has a smooth continuous inner surface with a sealing tube attached to each side; a flange at each end of each clamp unit having a collinear opening in the flange, the double-headed screw passing through the collinear opening.
  • the sealing tube is attached by welding and is constructed of a flexible material, the sealing tube typically having a pleated wall having ridges and grooves.
  • the sealing tube is made of flexible steel.
  • the ridges and grooves are two ridges and three grooves or four ridges and four grooves, or one ridge and two grooves.
  • the sealing tube first molds or stamps the pipe; or obtains a conventional annular pipe or rectangular pipe in a straight line direction and obtains a pressure formed for a desired sectional configuration.
  • the sealing tube is attached to the clamp unit along each side of the inner surface.
  • each side of the opposite side of the pipe of the sealing tube is connected to the clamp unit, the pipe being arranged between two flanges which are far apart.
  • each of the clamp units has a recess in its inner surface, and the duct is placed in the recess.
  • the clamp when the clamp is fully connected by the bolt, a tight fit is adopted between the seal pipe and the pipeline flange, and the ridge of the seal pipe is connected to the flange at the periphery and deformed to provide a connection between the clamp and the peripheral flange. Tightly sealed, the clamp portion will be fixed downwardly to provide continuous contact between the ridge 31 and the periphery of the flange.
  • the flange is fabricated to have an outer surface that is approximately circular or circular.
  • the gap around the peripheral region of the flange is eliminated by using a striking device.
  • the striking device is used with a hammer or a hammer and a piercer.
  • Figure 1 is a perspective view of a clamp positioned at a flange coupling around a pipeline, in conjunction with a prior embodiment of the present invention
  • Figure 2 is a side view of a jig unit of the jig of Figure 1;
  • Figure 3 is a partial bottom end view of the clamp portion of Figure 2;
  • Figure 4 is an enlarged cross-sectional view of the pipe shown in Figure 3;
  • Figure 5 is a partial cross-sectional view taken along line 5-5 of Figure 1;
  • Figures 6 and 7 are views similar to Figure 3, showing an alternate embodiment of the present invention.
  • Figure 8 shows a view similar to Figure 4 showing an alternative configuration of the conduit.
  • the preferred embodiment of the invention illustrated and described herein is for an apparatus in which the in-line connector has an annular flange.
  • the invention is equally applicable to other devices having flanged connections, such as tankers.
  • the hole end cap and the valve cover together have other flange shapes such as rectangular, square, hexagonal and elliptical.
  • Flange 12 is attached to the end of conduit 10, typically by welding, and a similar flange 13 is attached to the end of conduit 11.
  • the spacer 14 is placed in the middle of the abutting faces of the flanges 12 and 13, and the flanges are joined together by stud bolts 15 which pass through the collimating openings in the flanges 12 and 13, and each of the two ends of the stud bolt 15 has a Nut.
  • This flanged connection is commonly used in the field of pipelines.
  • Leakage may occur through the gasket 14 during use of the pipeline.
  • One way to fix the leak is to remove the nut and stud, separate the two flanges, remove the old gasket, insert a new gasket, and reconnect the flanges together.
  • This type of repair requires shutting down the pipeline, so developing a repair fixture can provide temporary and sometimes relatively long-lasting leak repair without affecting pipeline operation. Place the clamp around the location where the leak occurs, forming a seal, usually placed around the flange at the sealing location to define a closed annular area, and then introducing a sealant into the space so that the entire line does not need to be referred to the unmanned ship Maintenance, repair work can be done under the sea
  • the present invention contemplates a novel clamp structure for this type of sealing operation.
  • the preferred embodiment of the invention utilizes double semi-circular clamp units 20 and 21, each having a flange 22 at each end and a collinear opening 23 in the flange.
  • the two clamp units 20 and 21 are located at opposite positions on the flanges 12 and 13, and are joined together by a stud screw 24 and a nut 25 through which the screw passes.
  • each of the clamp units has a smooth continuous inner surface 28 with a sealing tube 29 attached to each side.
  • the sealed tube is attached by soldering as shown at 30 on Figures 3 and 5.
  • the sealed tube 29 is typically constructed of a flexible material, typically of flexible steel, although other materials may be used as desired.
  • the sealed tube typically has a pleat wall having a ridge 31 and a groove 32, as shown in Figure 4, two ridges and three grooves are preferred. Alternatively, four ridges and four grooves are also available, one ridge and two grooves as shown in Figure 8. The illustration can also be used.
  • the seal tube material is formed in the desired cross-sectional view.
  • the pipe can first be molded or stamped in accordance with the configuration of the desired cross-sectional view.
  • a conventional annular duct or a rectangular duct in a linear direction can be obtained and the pressure formed for the desired cross-sectional configuration can be obtained.
  • the appropriately lengthed sealing tube is curved into a curve to accommodate the space within the clamp unit and the seal is welded.
  • the sealing tube is secured to the clamp unit along each side of the inner surface, as shown in FIG.
  • each side of the opposite side of the pipe is connected to the clamp unit, as shown in Figure 6, the pipe is arranged between two flanges that are far apart.
  • the inner surface 28 of each clamp unit has a recess 34 therein in which the conduit is placed, as shown in FIG. This arrangement does not require a machining step during the formation of the groove.
  • the gripper unit is placed around the pipeline and joined together by a stud 24 and a nut 25.
  • the size of the clamp with the sealed tube needs to be marked, so that when the clamp is fully tightened by the bolt, a tight fit is used between the sealed tube and the line flange.
  • the clamp portion is secured by a nut on the stud, the ridges of the seal tube 31 are joined to the flange at the periphery 39, 40 and deformed to provide a tight seal between the clamp and the peripheral flange.
  • the clamp portion will be fixed downwardly to provide continuous contact between the ridge 31 and the periphery of the flange.
  • flanges such as 12 and 13 are fabricated using approximately circular or circular outer surfaces 39 and 40.
  • the inner curved surface 28 of the clamp and its contact sealing tube do not have sufficiently complete intimate contact at all points around the surfaces 39 and 40. If a gap is visible in the area around the periphery of the flange, the sealing tube should be hammered to close the gap.
  • a striking device such as by a hammer or hammer and a piercer, the ridge is deformed to engage the flange ring adjacent the exposed groove 32 of the ridge 31.
  • the next step is to introduce the sealant into the clamp unit, the seal tube and the ring formed by the line flange.
  • the injection valve 36 is inserted into the linear opening 37 of the clamp unit, and the sealant is introduced through a suitable valve.
  • the injection valve is replaced by a suitable closure device, such as a tube plug or a vulcanized sealant, which uses an integral piston 38.
  • the seal between the seal tube and the line flange is desirably achieved by the sealant during the sealant injection process.
  • the sealant overflows at the intersection between the clamp seal tube ridge 31 and the line flange, the small opening can be closed by hammering the seal tube groove to provide a better sealing engagement of the seal tube ridge with the line flange.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pipe Accessories (AREA)

Abstract

一种无人船载管线维修夹具，包括：双半环形夹具单元(20, 21)，两个夹具单元(20, 21)位于法兰(12, 13)上相对位置处，并且由双头螺钉(24)和螺母(25)连接在一起，每个夹具单元(20，21)具有一个光滑连续的内表面(28)，每一个边上附着一个密封管(29)；法兰(22)，位于每个夹具单元(20, 21)各自的端部，法兰(22)内具有共线开口(23)，双头螺钉(24)会透过共线开口(23)。

Description

无人船载管线维修夹具 技术领域
本发明涉及维修用具，特别是海底油气管线维修中由无人船搭载的管线维修夹具。
背景技术
夹具维修是在泄漏部位的管道外安装紧固件-夹具，达到维修管道泄漏的目的，夹具维修技术目前已经成熟的应用在陆地和海底油气管道维修作业中，根据夹具维修技术在海底油气管道的应用情况，目前维修技术中最关键的部件就是海底管道夹具。夹具大多制成两半状，使用时用螺栓连接法或焊接法固定到管道上，因此可以分为焊接式和螺栓连接式。焊接式夹具可以提高修复可靠性，螺栓连接式更方便。
对于我国广大海域海底管道维修，目前采用的方法是针对浅水湾进行水下人工潜水安装维修，而对于深水地区，是将海底管道提到工作船上，在工作船上对管道损害部位进行预处理后直接对管道进行夹具修复安装。然而对于水域浑浊能见度极低的情况，以上两种方法弊端明显，由于需要安排支持船、人员、维修设备及其他辅助设备到维修现场，并且在完成操作后需要进行支持船、人员、维修设备及其他辅助设备的复原工作，因此需要耗费的时间和经济成本很高。
国内生产厂家的夹具设备主要应用于陆地油气管道，用作临时维修时可以正常封堵油气管道2-3个月，保证油气在夹具四周密封处***漏，用作永久维修时，可以把夹具与管道整体焊接在一起。国内生产厂家目前还没有生产用于海底油气管道夹具设备的，国外海底油气管道家居设备技术比较成熟，随着无人船技术的快速发展，开发一些特殊结构的夹具搭载到无人船上，在无需人员配备的情况下，采用无人船和维修夹具以及适当的辅助设备就可以完成海底管线的修复工作，无需将管线提升至无人船上进行预处理，节约时间和经济成本。
发明内容
因此本发明的目的在于提供一种无人船载管线维修夹具，包括：双半环形夹具单元，两个夹具单元位于法兰上相对位置处，并且由双头螺钉和螺母连接在一起，每个夹具单元具有一个光滑连续的内表面，每一个边上附着一个密封管；法兰，位于每个夹具单元各自的端部，法兰内具有共线开口，双头螺钉会透过共线开口。
优选的，密封管通过焊接方式进行附着，并由柔性材料构成，密封管通常具有一个褶板壁，该壁具有脊部和沟槽。
优选的，密封管由柔性钢制成。
优选的，脊部和沟槽为两道脊部和三道沟槽或者四道脊部和四道沟槽，或者一道脊部和两道沟槽。
优选的，密封管首先模制或者冲压管道；或者获得直线方向上的传统环形管道或者矩形管道并且获得针对期望的截面配置形成的压力。
优选的，密封管固定在沿着内表面的各个边的夹具单元上。
优选的，密封管的管道相对侧的各个边都连接到夹具单元上，管道布置在两个相距很远的法兰之间。
优选的，每个夹具单元的内表面内都具有凹槽，管道放在凹槽内。
优选的，夹具被螺栓全部拴紧连接时，密封管和管线法兰之间采用紧配合，密封管的脊部在***与法兰连接在一起，并且变形从而提供夹具和***法兰之间的紧密密封，夹具部分将会向下固定从而提供脊部31和法兰***之间的连续接触。
优选的，法兰制作为具有近似圆形或者圆形的外表面。
优选的，通过使用敲击装置，消除环绕法兰***区域的缝隙。
优选的，敲击装置为锤头或者锤头和穿孔机一起使用。
根据下文结合附图对本发明具体实施例的详细描述，本领域技术人员将会更加明了本发明的上述以及其他目的、优点和特征。
附图说明
后文将参照附图以示例性而非限制性的方式详细描述本发明的一些具体实施例。附图中相同的附图标记标示了相同或类似的部件或部分。本领域技术人员应该理解，这些附图未必是按比例绘制的。本发明的目标及特征考虑到如下结合附图的描述将更加明显，附图中：
附图1为定位在环绕管线的法兰耦合件的夹具的透视图，并且结合现有本发明的优选实施例；
附图2为附图1的夹具一个夹具单元侧视图；
附图3为附图2的夹具部分的部分底端视图；
附图4为图3所示的管道的放大横截面图；
附图5为沿着附图1的5-5线截取的部分截面图；
附图6和7为与附图3类似的视图，表示本发明的一个替换实施例；以及
附图8表示与附图4类似内容的视图，表示管道的可替换配置。
具体实施方式
这里说明和描述的本发明的优选实施例用于管线内连接件具有环形法兰的设备。然而本发明对于其他具有法兰连接件的设备也同样适用，例如油罐车人 孔端盖和阀罩，一起具有其他法兰形状，例如长方形，正方形，六角形和椭圆形。
管道10和11长度之间的管道啮合件如图1和5所示。法兰12连接到管道10的末端，通常用焊接的方式，以及类似的法兰13连接到管道11的末端。垫片14放在法兰12和13相接面的中间，并且法兰由穿过法兰12和13内准直开口的双头螺栓15连接在一起，双头螺栓15的两端各自有一个螺母。这种法兰连接结构通常用于管线领域。
在管线使用过程中，透过垫片14可能会发生泄漏。修复泄漏的一种方法是去掉螺母和双头螺栓，将两个法兰分开，去掉旧的垫片后***新的垫片，然后将法兰重新连接在一起。这种类型的修补需要关闭管线，因此开发一种修复夹具能够在不影响管线操作的前提下提供临时的并且有些时候相对持久的泄漏修复。将夹具环绕泄漏发生的位置放置，形成密封，通常在密封位置环绕法兰放置来定义出一个闭合的环形区域，然后在空间内引入密封剂，这样就无需将整条管线提到无人船上进行维修，在海底即可以完成维修工作
本发明设计了一种新型夹具结构，用于这种类型的密封操作。本发明的优选实施例利用双半环形夹具单元20和21，每个夹具单元在各自端部具有一个法兰22，法兰内还具有共线开口23。两个夹具单元20和21位于法兰12和13上相对位置处，并且由双头螺钉24和螺母25连接在一起，螺钉会透过共线开口23。
在说明的优选实施例中，每个夹具单元具有一个光滑连续的内表面28，每一个边上附着一个密封管29。通常密封管通过焊接方式进行附着，如图3和5上的30处所示。
密封管29的优选形式如图4中的横剖面所示。密封管通常由柔性材料构成，通常为柔性钢制的，尽管按照需要也可以使用其他材料。密封管通常具有一个褶板壁，该壁具有脊部31和沟槽32，如图4所示的两道脊部和三道沟槽是优选的。可替换的，四道脊部和四道沟槽也是可用的，一道脊部和两道沟槽如图8 所示也可以使用。密封管材料在期望的截面图中形成。采用实例的方式，按照期望的截面图的配置首先可以模制或者冲压管道。另一个实施例中可以获得直线方向上的传统环形管道或者矩形管道并且获得针对期望的截面图配置形成的压力。
获得期望的剖面形状后，适当长度的密封管弯曲成为曲线从而适应夹具单元内的空间并且该密封件被焊接固定。在优选实施例中，密封管固定在沿着内表面的各个边的夹具单元上，如图3所示。在可替换布置方式中，管道相对侧的各个边都连接到夹具单元上，如图6所示，管道布置在两个相距很远的法兰之间。在另一个可替换布置方式中，每个夹具单元的内表面28内都具有凹槽34，管道放在凹槽内，如图7所示。这种布置方式在形成凹槽过程中不需要机加工步骤。
使用过程中，夹具单元环绕管线放置并且通过双头螺钉24和螺母25连接在一起。需要标出带密封管的夹具的尺寸，因此当夹具被螺栓全部拴紧连接时，密封管和管线法兰之间采用紧配合。由于夹具部分由双头螺钉上的螺母固定，密封管31的脊部在***39，40与法兰连接在一起，并且变形从而提供夹具和***法兰之间的紧密密封。夹具部分将会向下固定从而提供脊部31和法兰***之间的连续接触。通常，法兰如12和13制作的时候用近似圆形或者圆形的外表面39和40。这种情况下，夹具的内弯曲表面28和它的接触密封管不会在环绕表面39和40的所有点充分完整的紧密接触。如果在环绕法兰***的区域可以看到缝隙，应当锤击密封管从而关闭这个缝隙。通过使用敲击装置，例如通过锤头或者锤头和穿孔机一起使用，在临近脊部31的暴露的沟槽32处，将脊部变形使其能够与法兰环相啮合。
接下来是将密封剂引入到夹具单元，密封管和管线法兰形成的圆环内。将喷射阀36***到夹具单元的线状开口37内，并且通过适当的阀门将密封剂引入。密封剂喷射完成后，喷射阀由适当的闭合装置替换，如管堵头或者使用硫化密封剂，本实施例使用整体活塞38。
密封剂喷射过程中，密封管和管线法兰之间的密封期望由密封剂实现。当密封剂在夹具密封管脊部31和管线法兰之间的交点处溢出时，通过锤击密封管凹槽处可以关闭小开口从而使得密封管脊部与管线法兰更好的密封接合。
虽然本发明已经参考特定的说明性实施例进行了描述，但是不会受到这些实施例的限定而仅仅受到附加权利要求的限定。本领域技术人员应当理解可以在不偏离本发明的保护范围和精神的情况下对本发明的实施例能够进行改动和修改。

Claims (10)

  1. 一种无人船载管线维修夹具，其特征在于包括：
    双半环形夹具单元(20，21)，两个夹具单元(20，21)位于法兰(12，13)上相对位置处，并且由双头螺钉(24)和螺母(25)连接在一起，每个夹具单元(20，21)具有一个光滑连续的内表面(28)，每一个边上附着一个密封管(29)；
    法兰(22)，位于每个夹具单元(20，21)各自的端部，法兰(22)内具有共线开口(23)，所述双头螺钉(24)会透过共线开口(23)。
  2. 根据权利要求1所述的一种无人船载管线维修夹具，其特征在于：所述密封管(29)通过焊接方式进行附着，并由柔性材料构成，所述密封管(29)通常具有一个褶板壁，该壁具有脊部(31)和沟槽(32)。
  3. 根据权利要求2所述的一种无人船载管线维修夹具，其特征在于：所述密封管(29)由柔性钢制成。
  4. 根据权利要求2所述的一种无人船载管线维修夹具，其特征在于：所述脊部(31)和沟槽(32)为两道脊部和三道沟槽或者四道脊部和四道沟槽，或者一道脊部和两道沟槽。
  5. 根据权利要求2所述的一种无人船载管线维修夹具，其特征在于：所述密封管(29)首先模制或者冲压管道；或者获得直线方向上的传统环形管道或者矩形管道并且获得针对期望的截面配置形成的压力。
  6. 根据权利要求2所述的一种无人船载管线维修夹具，其特征在于：所述密封管(29)固定在沿着内表面的各个边的夹具单元上。
  7. 根据权利要求2所述的一种无人船载管线维修夹具，其特征在于：所述密封管(29)的管道相对侧的各个边都连接到夹具单元上，所述管道布置在两个相距很远的法兰之间。
  8. 根据权利要求1所述的一种无人船载管线维修夹具，其特征在于：所述 每个夹具单元的内表面(28)内都具有凹槽(34)，所述管道放在凹槽(34)内。
  9. 根据权利要求1所述的一种无人船载管线维修夹具，其特征在于：当所述夹具被螺栓全部拴紧连接时，密封管和管线法兰之间采用紧配合，密封管(31)的脊部在***(39，40)与法兰连接在一起，并且变形从而提供夹具和***法兰之间的紧密密封，夹具部分将会向下固定从而提供脊部(31)和法兰(22，23)***之间的连续接触。
  10. 根据权利要求1所述的一种无人船载管线维修夹具，其特征在于所述法兰(12，13)制作为具有近似圆形或者圆形的外表面(39，40)。
PCT/CN2016/095104 2016-06-26 2016-08-14 无人船载管线维修夹具 WO2018000538A1 (zh)

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CN113389956A (zh) * 2021-06-08 2021-09-14 李季 一种便于调节的水利工程管道稳定连接装置

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CN108316455A (zh) * 2018-02-08 2018-07-24 李凯 一种淋浴水废热再利用的热水器节能供水装置
CN111928055A (zh) * 2020-08-17 2020-11-13 南通世睿电力科技有限公司 一种抱箍式管道重构密封封堵工艺
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