WO2020019561A1 - Tower body of buoyant tower platform - Google Patents

Tower body of buoyant tower platform Download PDF

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Publication number
WO2020019561A1
WO2020019561A1 PCT/CN2018/113316 CN2018113316W WO2020019561A1 WO 2020019561 A1 WO2020019561 A1 WO 2020019561A1 CN 2018113316 W CN2018113316 W CN 2018113316W WO 2020019561 A1 WO2020019561 A1 WO 2020019561A1
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tower
keel
platform
buoyancy
shell
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PCT/CN2018/113316
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French (fr)
Chinese (zh)
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潘徐杰
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惠生(南通)重工有限公司
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Publication of WO2020019561A1 publication Critical patent/WO2020019561A1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices

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  • the invention relates to a tower structure of a buoyancy tower platform, and belongs to the field of ocean engineering.
  • the buoyancy tower platform is a patented technology that is also used to collect and store condensate or crude oil.
  • the shape of the buoyancy tower platform is similar to the SPAR platform, but the difference is that the cabin structure of the buoyancy tower platform extends to the sea floor and comes with its own
  • the shallow foundation cylindrical suction pile fixes it on the sea floor and moves with the waves. Whether it is in the form of single-pillar or multi-pillar, the traditional buoyancy tower adopts the ordinary cylindrical type. In this case, the platform follows the waves in the During the movement, the bottom of the cylinder has the probability of hitting the sea floor.
  • the current method does not install the suction pile to the bottom of the platform, such as the buoyancy tower platform structures disclosed in 2011800612002 and 2013104737690.
  • the technical problem to be solved by the present invention is to overcome the disadvantage of relatively high collision probability between the tower body and the sea floor in the existing buoyancy tower platform.
  • a tower body with a cut structure at the bottom is provided to reduce the probability of collision between the bottom of the platform and the sea floor.
  • the tower body of the buoyancy tower platform of the present invention includes at least one shell of a cylindrical structure, characterized in that the bottom of the shell is connected to a suction pile, and the bottom of the shell is connected to An oblique section is provided between the suction pile connection and the side of the shell.
  • an included angle between the oblique cut surface and the ground is 10 ° to 45 °.
  • the above technical solution is further improved.
  • the outer surface of the casing is provided with a multi-layered ring-shaped keel keel, the keel keel is disposed perpendicularly to the case, and the keel keel is disposed above the oblique cut surface.
  • the above technical solution is further improved, and the keel keel is arranged in the area from the bottom of the casing to the total height of the casing 2/5.
  • the tower body of the present invention adopts a cut structure at the bottom of the tower body, which greatly reduces the probability of the platform colliding with the sea floor during movement.
  • FIG. 1 is a schematic structural diagram of an existing buoyancy tower platform
  • Figure 2 is a schematic structural diagram of a buoyancy tower platform with a 30 ° oblique section at the bottom;
  • Figure 3 is a schematic structural diagram of a buoyancy tower platform with a 45 ° oblique section at the bottom;
  • Figure 4 shows the situation when the existing buoyancy tower platform platform pans to the left by 8 °
  • Figure 5 shows the situation when the buoyancy tower platform with a 30 ° oblique section at the bottom rolls 8 ° to the left;
  • Figure 6 shows the situation when the buoyancy tower platform with a 45 ° oblique section at the bottom rolls 8 ° to the left;
  • Figure 7 is a perspective view of a buoyancy tower platform with a four-cylinder structure and a 45 ° oblique section at the bottom;
  • FIG. 8 is a perspective view of a buoyancy tower platform with a four-column structure and a 45 ° oblique section at the bottom and a ring-shaped column-shaped keel;
  • Figure 9 is a perspective view of a buoyancy tower platform with a single-cylinder structure and a 45 ° oblique section at the bottom;
  • FIG. 10 is a perspective view of a buoyancy tower platform with a single-cylinder structure and a 45 ° oblique section at the bottom and a ring-shaped cymbal keel;
  • FIG. 11 is a perspective view of a keel structure under a four-cylinder structure
  • FIG. 12 is another perspective view of the keel structure under the four-cylinder structure.
  • the tower body of a buoyancy tower platform generally consists of a single or multiple cylinders 1 arranged in parallel.
  • Figure 1 lists a typical four-cylinder buoyancy tower platform in the prior art.
  • the buoyancy tower platform moves with the waves, the bottom of the cylinder 1 will be connected to the sea.
  • the suction pile 2 is not installed to the end when the buoyancy tower platform is installed, leaving a gap between the cylinder 1 and the sea floor 5, but the movement of the buoyancy tower platform changes with the wave size.
  • the platform of the buoyancy tower was shaken only 8 °, the bottom of the cylinder 1 collided with the sea floor 5. Even if sufficient clearance was reserved, the collision would occur due to the accumulation of the sea floor 5.
  • This cut bottom structure is between the side of the cylinder and the bottom of the cylinder, instead of taking a 90 ° direct connection, it adds a chamfer.
  • a transitional form, that is, a chamfered surface 4 is provided between the bottom of the cylinder and the suction joint 3 and the side of the cylinder.
  • This angled transition form is not only suitable for multi-column buoyancy tower platforms, but also for single-column buoyancy tower platforms. See Figure 7 and Figure 9, respectively.
  • the typical four-column buoyancy tower adopts a 45 ° cut bottom structure and a single column.
  • the buoyancy tower adopts a 45 ° cut bottom structure.
  • the included angle between the oblique section 4 and the sea floor 5 is 10 ° to 45 °.
  • 20 ° to 30 ° is recommended. It is recommended to choose a platform with a small swing angle of 10 ° to 20 °, and for sea areas prone to scour accumulation, it is recommended to select 30 ° to 45 °.
  • a multi-layered ring-shaped stern keel 6 is provided in the area from the total height 2/5 of the cylinder 1 to the bottom of the cylinder, which can increase the roll damping of the buoyancy tower platform and further relieve the buoyancy
  • the shaking of the tower reduces the probability of collision between the bottom of the platform and the sea floor 5.
  • ring-shaped keel keels 6 can be provided to increase damping.
  • the ring-shaped keel keel is a whole ring, while in a multi-column buoyancy tower platform, such ring-shaped keel keel 6
  • the 7 is broken at the near point of the two columns. See FIG. 11 and FIG. 12. This break is only discontinuous for a cylinder 1 and continuous for a buoyancy tower platform composed of multiple columns.

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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)
  • Earth Drilling (AREA)
  • Revetment (AREA)

Abstract

Disclosed is a tower body of a buoyant tower platform. The tower body at least comprises a housing (1) of a cylindrical structure; the bottom of the housing (1) is connected with a suction pile (2); and a diagonal plane (4) is arranged between the connecting position (3) of the bottom of the housing (1) and the suction pile (2) and the side edge of the housing. Therefore, the probability that the platform collides with a sea bed (5) during movement is greatly reduced.

Description

浮力塔平台的塔体Tower body of buoyancy tower platform 技术领域Technical field
本发明涉及浮力塔平台的塔体结构,属于海洋工程领域。The invention relates to a tower structure of a buoyancy tower platform, and belongs to the field of ocean engineering.
背景技术Background technique
浮力塔平台是一项兼用于采集和存储凝析油或原油的平台专利技术,浮力塔平台外形类似于SPAR平台,但与其不同的是浮力塔平台舱体结构一直延伸至海床并通过自带的浅基础圆柱型的吸力桩将其固定在海底并随波浪运动,无论是采取单柱形式还是多柱形式,传统浮力塔均是采用普通的圆柱形式,在这种情况下,平台随波浪在运动时,圆柱底端就有碰到海床的概率,现行的做法将吸力桩不安装至平台底部,如2011800612002和2013104737690公开的浮力塔平台结构,在平台底部与海床之间预留空间,但预留的空间不能保证百年一遇甚至是更大的波高作用下,平台与海床发生碰撞,并且海床在洋流的作用下还会发生冲刷和堆积,如果是发生堆积,那么预留的空间就会很快被填满,这将显著增大平台与海床碰撞的概率。The buoyancy tower platform is a patented technology that is also used to collect and store condensate or crude oil. The shape of the buoyancy tower platform is similar to the SPAR platform, but the difference is that the cabin structure of the buoyancy tower platform extends to the sea floor and comes with its own The shallow foundation cylindrical suction pile fixes it on the sea floor and moves with the waves. Whether it is in the form of single-pillar or multi-pillar, the traditional buoyancy tower adopts the ordinary cylindrical type. In this case, the platform follows the waves in the During the movement, the bottom of the cylinder has the probability of hitting the sea floor. The current method does not install the suction pile to the bottom of the platform, such as the buoyancy tower platform structures disclosed in 2011800612002 and 2013104737690. Space is reserved between the bottom of the platform and the sea floor. However, the reserved space cannot guarantee that the platform will collide with the sea floor once every 100 years or even a larger wave height, and the sea floor will scour and accumulate under the action of the ocean current. If accumulation occurs, it is reserved. The space will soon fill up, which will significantly increase the probability of the platform colliding with the sea floor.
发明内容Summary of the Invention
本发明所要解决的技术问题是克服现有浮力塔平台中塔体与海床碰撞概率相对高的缺点。提供一种底部为切形结构的塔体,以减少平台底与海床发生碰撞的概率。The technical problem to be solved by the present invention is to overcome the disadvantage of relatively high collision probability between the tower body and the sea floor in the existing buoyancy tower platform. A tower body with a cut structure at the bottom is provided to reduce the probability of collision between the bottom of the platform and the sea floor.
为了解决上述技术问题,本发明的浮力塔平台的塔体,所述塔体至少包含一个圆柱体结构的壳体,其特征在于:所述壳体底部与吸力桩连接,所述壳体底部与吸力桩连接处和壳体侧边之间设置有斜切面。In order to solve the above technical problems, the tower body of the buoyancy tower platform of the present invention includes at least one shell of a cylindrical structure, characterized in that the bottom of the shell is connected to a suction pile, and the bottom of the shell is connected to An oblique section is provided between the suction pile connection and the side of the shell.
上述技术方案的进一步改进,所述斜切面与地面的夹角取10°至45°。The above technical solution is further improved, and an included angle between the oblique cut surface and the ground is 10 ° to 45 °.
上述技术方案的进一步改进,所述壳体的外侧面上设置有多层环柱状的舭龙骨,所述舭龙骨与壳体垂直设置,所述舭龙骨设置在斜切面的上方。The above technical solution is further improved. The outer surface of the casing is provided with a multi-layered ring-shaped keel keel, the keel keel is disposed perpendicularly to the case, and the keel keel is disposed above the oblique cut surface.
上述技术方案的进一步改进,所述舭龙骨设置在壳体底部至壳体总高度2/5处区域。The above technical solution is further improved, and the keel keel is arranged in the area from the bottom of the casing to the total height of the casing 2/5.
上述技术方案的进一步改进,所述壳体为两个以上时,相邻壳体之间的舭龙骨在近点处断开。The above technical solution is further improved. When there are more than two shells, the keel keel between adjacent shells is broken at a near point.
本发明的浮力塔平台的塔体比较现有浮力塔平台的塔体在塔体的底部采用 了切型结构形式,极大的减小了平台在运动时与海床发生碰撞的概率。Compared with the tower body of the existing buoyancy tower platform, the tower body of the present invention adopts a cut structure at the bottom of the tower body, which greatly reduces the probability of the platform colliding with the sea floor during movement.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1为现有浮力塔平台结构示意图;FIG. 1 is a schematic structural diagram of an existing buoyancy tower platform;
图2为底部为30°斜切面的浮力塔平台结构示意图;Figure 2 is a schematic structural diagram of a buoyancy tower platform with a 30 ° oblique section at the bottom;
图3为底部为45°斜切面的浮力塔平台结构示意图;Figure 3 is a schematic structural diagram of a buoyancy tower platform with a 45 ° oblique section at the bottom;
图4为现有浮力塔平台平台向左横摇8°时情形;Figure 4 shows the situation when the existing buoyancy tower platform platform pans to the left by 8 °;
图5为底部为30°斜切面浮力塔平台向左横摇8°时情形;Figure 5 shows the situation when the buoyancy tower platform with a 30 ° oblique section at the bottom rolls 8 ° to the left;
图6为底部为45°斜切面浮力塔平台向左横摇8°时情形;Figure 6 shows the situation when the buoyancy tower platform with a 45 ° oblique section at the bottom rolls 8 ° to the left;
图7为四柱体结构且底部为45°斜切面的浮力塔平台立体图;Figure 7 is a perspective view of a buoyancy tower platform with a four-cylinder structure and a 45 ° oblique section at the bottom;
图8为四柱体结构且底部为45°斜切面并加装环柱状舭龙骨的浮力塔平台立体图;FIG. 8 is a perspective view of a buoyancy tower platform with a four-column structure and a 45 ° oblique section at the bottom and a ring-shaped column-shaped keel;
图9为单柱体结构且底部为45°斜切面的浮力塔平台立体图;Figure 9 is a perspective view of a buoyancy tower platform with a single-cylinder structure and a 45 ° oblique section at the bottom;
图10为单柱体结构且底部为45°斜切面并加装环柱状舭龙骨的浮力塔平台立体图;FIG. 10 is a perspective view of a buoyancy tower platform with a single-cylinder structure and a 45 ° oblique section at the bottom and a ring-shaped cymbal keel;
图11为四柱体结构下舭龙骨结构立体图;FIG. 11 is a perspective view of a keel structure under a four-cylinder structure; FIG.
图12为四柱体结构下舭龙骨结构另一角度立体图。FIG. 12 is another perspective view of the keel structure under the four-cylinder structure.
具体实施方式detailed description
下面结合图1至图12对本发明实施方式进行详细说明:The following describes the embodiments of the present invention in detail with reference to FIGS. 1 to 12:
浮力塔平台的塔体一般由单个或多个平行设置的圆柱1组成,图1列出了一个现有技术中典型的四圆柱浮力塔平台,浮力塔平台随波浪运动时圆柱1底部会与海床5发生碰撞,现行的做法是浮力塔平台在安装时吸力桩2不安装到底,使圆柱1与海床5之间留有空隙,但是浮力塔平台的运动随波浪大小而变化,图4所示浮力塔平台仅在摇动8°时,圆柱1的底部与海床5就发生了碰撞,即使预留足够空隙,也会因海床5堆积而发生碰撞。The tower body of a buoyancy tower platform generally consists of a single or multiple cylinders 1 arranged in parallel. Figure 1 lists a typical four-cylinder buoyancy tower platform in the prior art. When the buoyancy tower platform moves with the waves, the bottom of the cylinder 1 will be connected to the sea. When the bed 5 collided, the current practice is that the suction pile 2 is not installed to the end when the buoyancy tower platform is installed, leaving a gap between the cylinder 1 and the sea floor 5, but the movement of the buoyancy tower platform changes with the wave size. When the platform of the buoyancy tower was shaken only 8 °, the bottom of the cylinder 1 collided with the sea floor 5. Even if sufficient clearance was reserved, the collision would occur due to the accumulation of the sea floor 5.
对于这种情况,提出一种切型的底部结构形式,这种切型的底部结构形式是 在圆柱的侧边和圆柱的底边之间,并非采取90°的直接连接,而增加一个折角的过渡形式,也就是说在圆柱的底部与吸力桩连接处3和圆柱的侧边之间设置斜切面4。In this case, a cut bottom structure is proposed. This cut bottom structure is between the side of the cylinder and the bottom of the cylinder, instead of taking a 90 ° direct connection, it adds a chamfer. A transitional form, that is, a chamfered surface 4 is provided between the bottom of the cylinder and the suction joint 3 and the side of the cylinder.
参见图2和3,分别为采取30°和45°切形底部结构形式的四柱浮力塔。See Figures 2 and 3 for four-post buoyancy towers with 30 ° and 45 ° cut bottom structures, respectively.
参见图5和6,采用了这种切形底部的浮力塔在摇动时显然不会再与海床5发生碰撞。Referring to FIGS. 5 and 6, the buoyancy tower using this cut bottom will obviously not collide with the sea floor 5 when shaking.
这种折角过渡形式不仅适用于多柱的浮力塔平台,对单柱的浮力塔平台也适用,参见图7和图9,分别是典型四柱浮力塔采取45°切形的底部结构形式和单柱浮力塔采取45°切形的底部结构形式。This angled transition form is not only suitable for multi-column buoyancy tower platforms, but also for single-column buoyancy tower platforms. See Figure 7 and Figure 9, respectively. The typical four-column buoyancy tower adopts a 45 ° cut bottom structure and a single column. The buoyancy tower adopts a 45 ° cut bottom structure.
斜切面4与海床5的夹角取10°至45°,对于角度数的选择,需要依据平台的耐波性计算或试验,横摇角度较大的平台推荐选择20°至30°,而横摇角度较小的平台推荐选择10°至20°,而易发生冲刷堆积现象的海域,推荐选择30°至45°。The included angle between the oblique section 4 and the sea floor 5 is 10 ° to 45 °. For the selection of the number of angles, calculation or test is required according to the wave resistance of the platform. For platforms with larger roll angles, 20 ° to 30 ° is recommended. It is recommended to choose a platform with a small swing angle of 10 ° to 20 °, and for sea areas prone to scour accumulation, it is recommended to select 30 ° to 45 °.
参见图8和图10,在圆柱1总高度2/5处至圆柱底部这一段区域,设置多层环柱状的舭龙骨6,舭龙骨6可以增大浮力塔平台的横摇阻尼,进一步缓解浮力塔的摇动以减少平台底与海床5发生碰撞的概率。Referring to FIGS. 8 and 10, a multi-layered ring-shaped stern keel 6 is provided in the area from the total height 2/5 of the cylinder 1 to the bottom of the cylinder, which can increase the roll damping of the buoyancy tower platform and further relieve the buoyancy The shaking of the tower reduces the probability of collision between the bottom of the platform and the sea floor 5.
环柱状舭龙骨6可设置多个以增加阻尼,对于单柱的浮力塔平台,这种环柱的舭龙骨为整个环形,而在多柱的浮力塔平台中,这种环柱的舭龙骨6在两柱的近点处7断开,参见图11和图12,这种断开只是对于一个圆柱1而言是不连续的,而对于多柱组成的浮力塔平台而言则是连续的。Multiple ring-shaped keel keels 6 can be provided to increase damping. For a single-column buoyancy tower platform, the ring-shaped keel keel is a whole ring, while in a multi-column buoyancy tower platform, such ring-shaped keel keel 6 The 7 is broken at the near point of the two columns. See FIG. 11 and FIG. 12. This break is only discontinuous for a cylinder 1 and continuous for a buoyancy tower platform composed of multiple columns.

Claims (5)

  1. 浮力塔平台的塔体,所述塔体至少包含一个圆柱体结构的壳体,其特征在于:所述壳体底部与吸力桩连接,所述壳体底部与吸力桩连接处和壳体侧边之间设置有斜切面。The tower body of a buoyancy tower platform. The tower body comprises at least one shell of a cylindrical structure, characterized in that the bottom of the shell is connected to a suction pile, the connection between the bottom of the shell and the suction pile and the side of the shell There are beveled planes between them.
  2. 如权利要求1所述的浮力塔平台的塔体,其特征在于:所述斜切面与地面的夹角取10°至45°。The tower body of the buoyancy tower platform according to claim 1, wherein the angle between the inclined plane and the ground is 10 ° to 45 °.
  3. 如权利要求2所述的浮力塔平台的塔体,其特征在于:所述壳体的外侧面上设置有多层环柱状的舭龙骨,所述舭龙骨与壳体垂直设置,所述舭龙骨设置在斜切面的上方。The tower body of the buoyancy tower platform according to claim 2, characterized in that: a multi-layered ring-shaped keel keel is provided on the outer surface of the shell, the keel keel is arranged perpendicular to the shell, and the keel keel Set above the chamfered surface.
  4. 如权利要求3所述的浮力塔平台的塔体,其特征在于:所述舭龙骨设置在壳体底部至壳体总高度2/5处区域。The tower body of the buoyancy tower platform according to claim 3, characterized in that the keel keel is arranged in a region from the bottom of the shell to a total height of 2/5 of the shell.
  5. 如权利要求4所述的浮力塔平台的塔体,其特征在于:所述壳体为两个以上时,相邻壳体之间的舭龙骨在近点处断开。The tower body of the buoyancy tower platform according to claim 4, characterized in that: when there are more than two shells, the keel keel between adjacent shells is broken at a near point.
PCT/CN2018/113316 2018-07-25 2018-11-01 Tower body of buoyant tower platform WO2020019561A1 (en)

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