CN106864684B - A kind of stress joint device of control marine riser bending load distribution - Google Patents
A kind of stress joint device of control marine riser bending load distribution Download PDFInfo
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- CN106864684B CN106864684B CN201710108632.3A CN201710108632A CN106864684B CN 106864684 B CN106864684 B CN 106864684B CN 201710108632 A CN201710108632 A CN 201710108632A CN 106864684 B CN106864684 B CN 106864684B
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- 238000005452 bending Methods 0.000 title claims abstract description 18
- 238000009826 distribution Methods 0.000 title claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 239000011152 fibreglass Substances 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 description 8
- 230000003014 reinforcing effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000003351 stiffener Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B35/4413—Floating drilling platforms, e.g. carrying water-oil separating devices
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Connection Of Plates (AREA)
Abstract
Description
技术领域technical field
本发明涉及一种控制海洋立管弯曲载荷分布的应力接头装置，用于增强海洋平台立管的抗弯曲能力，保证立管的结构强度。The invention relates to a stress joint device for controlling the bending load distribution of an ocean riser, which is used to enhance the bending resistance of the riser of an ocean platform and ensure the structural strength of the riser.
背景技术Background technique
在海上平台的海上钻井和生产作业期间，由于立管的功能载荷、环境载荷和偶然载荷产生的弯曲应力，容易使海洋立管产生强度过载、疲劳及断裂。During offshore drilling and production operations on offshore platforms, due to the bending stress generated by the functional load, environmental load and accidental load of the riser, it is easy to cause strength overload, fatigue and fracture of the offshore riser.
由于这些原因产生的立管应力问题，目前通过在井口连接处、海洋平台的下部安装应力节解决。所述应力节通常是一截厚度随长度逐渐变化的立管，其作用为控制立管连接处的应力在可接受范围内。The riser stress problem caused by these reasons is currently solved by installing stress joints at the wellhead connection and the lower part of the offshore platform. The stress joint is usually a riser whose thickness gradually changes with the length, and its function is to control the stress at the joint of the riser within an acceptable range.
在现有应用中，锥形应力节作为一截独立的、带有锥形截面的立管接头，其设计长度受到加工制造等方面因素的限制，其合理长度在60英尺左右，而根据钻井需要，当有必要增大船体位移时，需要增加锥形应力节的长度。在实际使用中，所述锥形应力节和第一个标准立管接头之间的结合面是最危险的区域。In the existing application, the conical stress joint is used as an independent riser joint with a conical section, and its design length is limited by factors such as processing and manufacturing. , when it is necessary to increase the hull displacement, the length of the conical stress section needs to be increased. In actual use, the interface between the conical stress joint and the first standard riser joint is the most dangerous area.
发明内容Contents of the invention
本发明的目的是为了提供一种控制海洋立管弯曲载荷分布的应力接头装置，是一种可用于不同直径海洋立管的应力接头。The object of the present invention is to provide a stress joint device for controlling the bending load distribution of an ocean riser, which is a stress joint that can be used for ocean risers with different diameters.
本发明的目的是这样实现的：包括贴合在立管外壁的加强件和一对用于固定加强件的收紧箍，且所述加强件沿着立管周向间隔布置，每个加强件包括与立管外壁贴合的衬板、与衬板垂直连接的立板，所述衬板的两端设置有凸起，且凸起与立板的两端构成两个卡槽，每个收紧箍包括两个半圆环和用于连接两个半圆环的连接件，每个所述半圆环的内表面对应设置有与卡槽配合的凹槽，且凹槽的数量与加强件的数量相等。The object of the present invention is achieved in the following way: it includes a reinforcing member attached to the outer wall of the riser and a pair of tightening hoops for fixing the reinforcing member, and the reinforcing members are arranged at intervals along the circumference of the riser, each reinforcing member It includes a liner attached to the outer wall of the standpipe and a vertical plate vertically connected to the liner. Both ends of the liner are provided with protrusions, and the protrusions and the two ends of the vertical plate form two card slots. The hoop includes two semi-circular rings and a connector for connecting the two semi-circular rings. The inner surface of each semi-circular ring is correspondingly provided with a groove that matches the card slot, and the number of the grooves is the same as that of the reinforcement member. equal in number.
本发明还包括这样一些结构特征：The present invention also includes such structural features:
1.所述衬板是由钢质或塑料或玻璃钢制成的长条形板材。1. The liner is a strip-shaped plate made of steel, plastic or fiberglass.
2.所述立板是由钢质或塑料或玻璃钢制成曲边梯形板材。2. The vertical board is made of steel, plastic or FRP with curved trapezoidal plates.
与现有技术相比，本发明的有益效果是：本发明的应力接头可使集中在立管接头处的弯曲应力载荷分布在一段可控的长度范围内，以控制弯曲应力在可接受的范围内。Compared with the prior art, the beneficial effect of the present invention is: the stress joint of the present invention can distribute the bending stress load concentrated at the riser joint within a controllable length range, so as to control the bending stress within an acceptable range Inside.
1.本发明能够增强立管的抗弯曲能力，保证立管的结构强度。1. The present invention can enhance the bending resistance of the standpipe and ensure the structural strength of the standpipe.
2.相对于简单增厚立管壁以增强立管强度的方法，本发明在保证结构强度的同时减小了重量和体积。2. Compared with the method of simply thickening the wall of the standpipe to enhance the strength of the standpipe, the present invention reduces the weight and volume while ensuring the structural strength.
3.本发明结构简单，易于制造和加工，易于安装。3. The present invention has a simple structure, is easy to manufacture and process, and is easy to install.
4.本发明使用机械连接，方便拆装与更换。4. The present invention uses mechanical connection, which is convenient for disassembly and replacement.
附图说明Description of drawings
图1是本发明的立管应力接头装置总体图；Fig. 1 is an overall view of the riser stress joint device of the present invention;
图2是本发明的立管应力接头装置正视图；Fig. 2 is a front view of the riser stress joint device of the present invention;
图3是本发明的加强件轴测图；Fig. 3 is an axonometric view of a reinforcement of the present invention;
图4是本发明的收紧箍轴测图；Fig. 4 is axonometric view of tightening hoop of the present invention;
图5是本发明的收紧箍的限位孔的示意图；Fig. 5 is a schematic diagram of the limiting hole of the tightening hoop of the present invention;
图中：1.收紧箍，2.加强件，3.立管，4.立板，5.衬板，6.卡槽，7.半圆形环，8.螺栓螺母结构，9.凹槽，10.限位孔。In the figure: 1. tightening hoop, 2. reinforcement, 3. standpipe, 4. vertical plate, 5. liner, 6. slot, 7. semicircular ring, 8. bolt and nut structure, 9. concave Groove, 10. limit hole.
具体实施方式Detailed ways
下面结合附图与具体实施方式对本发明作进一步详细描述。The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
结合图1至图5，本发明包括收紧箍1、加强件2，收紧箍1和加强件2通过凹槽9和卡槽6咬合固定，作用在立管/管道/杆件连接处。也即本发明包括一组紧贴立管壁并在立管的轴线周围间隔开的加强件和一对用于固定加强件的收紧箍。Referring to Fig. 1 to Fig. 5, the present invention includes a tightening hoop 1 and a reinforcing member 2, and the tightening hoop 1 and the reinforcing member 2 are occluded and fixed through the groove 9 and the slot 6, acting on the joint of the standpipe/pipe/rod. That is, the present invention includes a set of stiffeners attached to the riser wall and spaced about the axis of the riser and a pair of cinch hoops for securing the stiffeners.
加强件包括立板4、衬板5、卡槽6，立板和衬板垂直连接，所述衬板沿平行于立管方向平铺在立管壁上，所述立板垂直于所述衬板并固定在衬板上。加强件用于承受部分弯曲载荷并将弯曲载荷分散在一段可控的长度范围内。所述衬板包括与立管壁贴合的主体，并包括主体上下两端用于与收紧箍结合的凹槽。立板4采用钢板切削而成。衬板5采用铸钢。立板4和衬板5通过焊接结合。The reinforcement includes a vertical plate 4, a lining plate 5, and a card slot 6. The vertical plate and the lining plate are vertically connected. The lining plate is laid on the wall of the vertical pipe along the direction parallel to the vertical pipe. board and fixed on the backing board. Stiffeners are used to take part of the bending load and spread the bending load over a controlled length. The liner includes a main body that is attached to the riser wall, and includes grooves at the upper and lower ends of the main body for combining with the tightening hoop. The vertical plate 4 is formed by cutting a steel plate. Lining plate 5 adopts cast steel. The vertical plate 4 and the lining plate 5 are combined by welding.
收紧箍1包括两个半圆形环7、螺栓螺母结构8、凹槽9，半圆形环由螺钉螺母或其他固紧结构连接，以将所述加强件紧箍在立管壁上，所述半圆形环采用钢结构。凹槽与对应的卡槽配合，用于约束加强件的位移，且凹槽的数量与加强件的数量相等。一对内侧开有凹槽的半圆形环7以螺栓螺母结构8结合在一起。螺栓穿过半圆形凹槽的限位孔，与螺母连接。The tightening hoop 1 includes two semicircular rings 7, bolt and nut structures 8, and grooves 9. The semicircular rings are connected by screw nuts or other fastening structures to tighten the reinforcing member on the riser wall, The semicircular ring adopts steel structure. The groove cooperates with the corresponding card groove to constrain the displacement of the reinforcement, and the number of the groove is equal to the number of the reinforcement. A pair of semicircular rings 7 with grooves on the inner side are joined together by a bolt and nut structure 8 . The bolt passes through the limiting hole of the semicircular groove, and is connected with the nut.
更为具体的说：本发明的衬板由一块钢制或其它弹性材料(如塑料、玻璃钢等)构成的长条形板材构成，两端具有与所述收紧箍宽度相同的卡槽，以与所述收紧箍上的所述凹槽契合；所述的立板由一块钢制或其它弹性材料(如塑料、玻璃钢等)构成的曲边梯形板材构成，立管弯曲时起到承载弯矩的作用。More specifically: the liner of the present invention is made of a strip-shaped plate made of steel or other elastic materials (such as plastics, glass fiber reinforced plastics, etc.), and both ends have a slot with the same width as the tightening hoop, so as to It fits with the groove on the tightening hoop; the vertical plate is composed of a curved trapezoidal plate made of steel or other elastic materials (such as plastic, glass fiber reinforced plastic, etc.), and the riser acts as a load-bearing bend when it is bent. The role of moment.
本发明的一种海洋立管应力接头装置的两种不同安装过程：Two different installation processes of a marine riser stress joint device of the present invention:
(1)预安装(1) pre-installed
在实际的海洋平台立管安装过程中，单独一段立管在海洋平台上进行连接并伸入水下，以继续安装下一段立管。安装应力接头时，首先，当两段立管在海洋平台上连接后，如图1所示在接头周围摆放加强件2，在加强件两端加装收紧箍1，并将收紧螺栓8旋紧。In the actual installation process of the riser of the offshore platform, a single section of the riser is connected on the offshore platform and extended into the water, so as to continue to install the next section of the riser. When installing stress joints, first, after the two sections of risers are connected on the offshore platform, place reinforcements 2 around the joints as shown in Figure 1, install tightening hoops 1 at both ends of the reinforcement, and tighten the bolt 8 Tighten.
(2)改装(2) modification
附加安装在已在位的立管/管道/杆件的接头位置，以增加接头段的抗弯强度。Additional installation at joint locations of risers/pipes/rods already in place to increase the flexural strength of the joint section.
综上，本发明能够增强立管的抗弯曲能力，保证立管的结构强度。相对于简单增厚立管壁以增强立管强度的方法，本发明可取代传统锻件应力接头，成本大大降低(相比传统锻件应力接头，只需10％的造价)，并在保证结构强度的同时减小了重量和体积；结构简单，易于制造和加工，易于安装；使用机械连接，方便拆装与更换和附加安装。主要用于分散立管/管道/杆件的弯曲载荷，保障其强度。In summary, the present invention can enhance the bending resistance of the standpipe and ensure the structural strength of the standpipe. Compared with the method of simply thickening the standpipe wall to enhance the strength of the standpipe, the present invention can replace the traditional forging stress joint, and the cost is greatly reduced (compared with the traditional forging stress joint, only 10% of the cost is required), and the structural strength is ensured At the same time, the weight and volume are reduced; the structure is simple, easy to manufacture and process, and easy to install; the mechanical connection is used to facilitate disassembly, replacement and additional installation. It is mainly used to disperse the bending load of the riser/pipe/rod to ensure its strength.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710108632.3A CN106864684B (en) | 2017-02-27 | 2017-02-27 | A kind of stress joint device of control marine riser bending load distribution |
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| CN201710108632.3A CN106864684B (en) | 2017-02-27 | 2017-02-27 | A kind of stress joint device of control marine riser bending load distribution |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107143291A (en) * | 2017-07-13 | 2017-09-08 | 安世亚太科技股份有限公司 | Counter-bending booster |
| CN117569756B (en) * | 2024-01-15 | 2024-03-29 | 烟台铁中宝钢铁加工有限公司 | Production conveying vertical pipe suspension system of floating oil production platform |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101382000A (en) * | 2007-09-07 | 2009-03-11 | 中国海洋石油总公司 | Upper module deck support for floating type production, storage and offloading |
| CN201268390Y (en) * | 2008-08-15 | 2009-07-08 | 中国海洋石油总公司 | Chunk cover plate type hanging point |
| CN102673747A (en) * | 2011-02-11 | 2012-09-19 | 韦特柯格雷公司 | Marine riser tensioner |
| CN204432969U (en) * | 2015-01-08 | 2015-07-01 | 程强 | A kind of offshore production platform Anti-freezing support post |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5665024B2 (en) * | 2010-07-02 | 2015-02-04 | 独立行政法人海上技術安全研究所 | Riser tube suspension device and mooring tube coupling device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101382000A (en) * | 2007-09-07 | 2009-03-11 | 中国海洋石油总公司 | Upper module deck support for floating type production, storage and offloading |
| CN201268390Y (en) * | 2008-08-15 | 2009-07-08 | 中国海洋石油总公司 | Chunk cover plate type hanging point |
| CN102673747A (en) * | 2011-02-11 | 2012-09-19 | 韦特柯格雷公司 | Marine riser tensioner |
| CN204432969U (en) * | 2015-01-08 | 2015-07-01 | 程强 | A kind of offshore production platform Anti-freezing support post |
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