Ocean platform bottom prying structure with light weight

Abstract

The utility model relates to the field of ocean engineering, in particular to a light ocean platform bottom prying structure which comprises a structure bottom plate, auxiliary supporting frames and a horizontal tank, the auxiliary supporting frames are arranged on the two symmetrical side faces of the structure bottom plate, a saddle is arranged at the bottom of the horizontal tank, and the horizontal tank is arranged on the saddle. The saddle is fixedly connected with the structural bottom plate and the auxiliary supporting frame; a connecting beam is arranged on the back face of the position, used for fixing the saddle, of the structural bottom plate. The horizontal tank is fixed through cooperation of the structural bottom plate and the auxiliary supporting frame, the weight is reduced by splicing the bottom plate through small sectional materials, the specification adaptability of the structural bottom plate is improved, the stability of the ocean platform bottom skid structure is enhanced through connection of the horizontal tank saddle and the auxiliary supporting frame, and the integrity and safety of the ocean platform bottom skid structure are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of ocean engineering, in particular to a light-weight ocean platform bottom pry structure. BACKGROUND

[0002] Ocean platforms are widely used in oil and gas development, ocean observation, offshore wind power projects, and play a core role. Ocean platforms, including drilling platforms, production platforms, and FPSO, are the foundation of large integrated equipment construction, responsible for oil and gas exploration, exploitation, processing, and storage.

[0003] The equipment on the ocean platform is usually designed with a pry structure. This structure is composed of equipment, pipelines, instrument valves, and ladder platforms, which are collectively located on the bottom pry structure. These pry blocks are prefabricated on land, with flange connection ports reserved for overall transportation and hoisting. After reaching the designated location, the equipment and pipelines are connected according to the process flow. The advantage of pry blocks is that they facilitate modular design, which not only shortens the construction and design period and improves construction efficiency, but also reduces on-site workload due to prefabrication and integration, thereby reducing construction costs. In addition, prefabrication in a factory environment improves safety and reduces the risk of on-site construction. Modular design also allows for flexible adjustment and expansion as needed.

[0004] However, ocean platforms also have some obvious disadvantages. Due to the characteristics of the platform itself, the size is limited, and the weight and height of the pry block are restricted during basic design. In order to meet the strength and rigidity requirements for hoisting, the use of large section sizes for the bottom pry increases the overall weight of the pry block, and also increases the material and labor costs for the manufacturer. In some cases, it may exceed the weight limit of the basic design, making it impossible to meet the requirements.

[0005] Therefore, there is an urgent need to develop a new type of ocean platform bottom pry structure that can reduce the weight of the ocean platform bottom pry structure while meeting functional requirements. This structure will help solve the challenges faced by existing ocean platforms and improve their performance and economic benefits. INVENTION CONTENTS

[0006] To solve the problems mentioned in the background technology and overcome the above shortcomings, the utility model provides the following technical solutions:

[0007] A light-weight ocean platform bottom pry structure replaces the use of large sections with a small section bottom plate combination, uses plug-in splicing combined with welding fixation for assembly and fixation, reduces the overall weight of the ocean platform bottom pry structure, and facilitates transportation and installation.

[0008] The offshore platform skid structure comprises a structural base plate, auxiliary support frames and two saddle-equipped horizontal tanks arranged on the structural base plate; the auxiliary support frames are two structurally identical truss structures arranged on the two symmetrical sides of the structural base plate respectively; the saddle on the horizontal tank is arranged at the bottom of the horizontal tank and is fixedly connected with the structural base plate and the auxiliary support frames through the saddle when fixed, and the connection obtains a complete offshore platform skid structure.

[0009] The structural base plate is a lattice structure composed of a plurality of skid blocks which are longitudinally and transversely spliced respectively, the structural base plate is provided with a round hole connected with the saddle of the horizontal tank, and the side of the structural base plate is provided with an overflow hole;

[0010] Further, the skid block is composed of a plurality of mutually parallel profile steel base plates, the base plate is provided with a fixing hole, and the base plate is fixed through the fixing hole to form a complete skid block;

[0011] Further, the skid block is composed of 5-10 base plates; the base plate is provided with 3-5 fixing holes;

[0012] Further, the length of the skid block is L, the width is W, and the height is G; the total length of the structural base plate is 2-10L, the total width is 1-10W, and the total height is G;

[0013] Further, the side of the skid block is provided with a flange hole and a limiting mechanism, the flange is used to pass through the flange holes of adjacent skid blocks to fix the skid blocks; and a drainage flange is arranged on the side of the skid block;

[0014] The distance between the adjacent skid blocks is adjusted by using the limiting mechanism, and the structural base plate meeting the requirements of the offshore platform is finally obtained by welding and fixing;

[0015] The auxiliary support frame comprises a bottom rod, a top rod and a support rod, the bottom rod and the top rod are provided with adjusting holes, and the bottom rod and the top rod are connected and combined into a complete trapezoidal truss structure by using the adjusting holes and the support rod;

[0016] Further, the length of the bottom rod is greater than the length of the top rod and the length of the bottom rod is not longer than the total length of the structural base plate; the trapezoidal truss structure is an isosceles trapezoidal truss structure;

[0017] Further, the support rod comprises a straight pull rod and an inclined pull rod, the straight pull rod is designed at the middle position of the bottom rod and the top rod and is perpendicular to the bottom rod and the top rod, that is, the straight pull rod connects and supports the bottom rod and the top rod in the vertical direction; other positions requiring joint fixation are connected in the form of an inclined angle to form a triangular structure, so as to ensure the stability of the auxiliary support frame structure;

[0018] In order to further ensure the stress stability of the auxiliary support frame, two straight pull rods are arranged, the fixing points of the two straight pull rods on the bottom rod divide the bottom rod into three sections a, b and c, the distance from one end of the bottom rod to the fixing point of the straight pull rod closest to the end is the a section, the distance from the straight pull rod far away from the end to the other end is the c section, and the distance between the two straight pull rods is the b section, and the length ratio of the a, b and c sections on the bottom rod is 2:1:2; the fixing points of the two straight pull rods on the top rod correspondingly divide the top rod into three sections a, b and c, and the length ratio of the corresponding a, b and c sections on the top rod is 1:1:1.

[0019] The adjusting holes on the bottom rod are fixedly connected with the structural bottom plate, and different positions of the adjusting holes can be selected according to the length of the structural bottom plate.

[0020] The two bottom parts of the lying tank are provided with saddles, the saddles comprise a bottom plate and two web plates connected with the bottom plate, the bottom plate of the saddle is fixed on the structural bottom plate, and the web plates are fixed with the auxiliary support frame by welding respectively;

[0021] Further, according to the division of the a, b and c sections on the bottom rod, the structural bottom plate is also divided into three regions, the round holes connected with the saddles of the lying tank are arranged in the a section and the c section regions on the structural bottom plate, and the bottom plate of the saddle is fixed on the round holes in the a section and the c section regions; the web plates on the two sides of the saddle are welded and fixed with the inclined pull rods in the regions correspondingly;

[0022] Further, a connecting beam is arranged on the position of the back of the structural bottom plate for fixing the bottom plate of the saddle.

[0023] Compared with the prior art, the utility model has the advantages that:

[0024] 1. The lying tank is fixed by combining the structural bottom plate and the auxiliary support frame for ocean platform operation, wherein the use of the small section plate not only realizes the splicing of the structural bottom plate, but also reduces the overall weight of the ocean platform bottom pry structure; meanwhile, the saddles of the lying tank are used to fix the lying tank and connect and fix the auxiliary support frames at the symmetrical positions of the structural bottom plate, so that the stable connection among the three is realized, the design ensures the stable fixation of the lying tank, and the auxiliary support frames compensate for the problem that the pry block spliced by the small steel plate has weak bearing capacity compared with the large steel plate, so that the auxiliary support frames share part of the weight of the lying tank, and the integrity of the ocean platform bottom pry structure is ensured.

[0025] 2. The fixed holes arranged on the small profile base plate fix the parallelly spliced base plates to form the pry bar, which enhances the structural stability of the pry bar, prevents it from scattering, and further improves the specification adaptability of the structural base plate; in addition, the flange holes and the limiting mechanism added on the side of the pry bar not only facilitate the adjustment of the distance between the pry bars, but also ensure that the specification of the structural base plate can meet the requirements of the offshore platform; this design makes the installation and adjustment of the pry bar more flexible, while ensuring the accuracy and reliability of the structure.

[0026] 3. The auxiliary support frame forms a stable truss structure through the fixation of the straight pull rod and the inclined pull rod with the top rod and the bottom rod; the straight pull rod and the inclined pull rod serve as the stretchable support rods, which not only facilitate the adjustment of the height of the auxiliary support frame according to the size of the saddle to realize the fixation with the saddle, but also help the installation personnel to accurately position the installation position of the lying tank according to the designed position of the straight pull rod and the inclined pull rod, thereby preventing the damage of the offshore platform pry structure caused by improper installation or fixation position of the lying tank, and improving the installation accuracy and the safety of the structure. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a structural base plate back structure schematic diagram in the utility model;

[0028] Figure 2 It is an auxiliary support frame structure schematic diagram in the utility model;

[0029] Figure 3 It is a saddle fixation structure schematic diagram in the utility model

[0030] 1-structural base plate, 11-overflow hole, 12-pry bar, 13-connection beam, 2-auxiliary support frame, 21-bottom rod, 22-top rod, 23-straight pull rod, 24-inclined pull rod, 25-a section, 26-b section, 27-c section, 3-lying tank, 31-saddle, 311-bottom plate, 312-web. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0033] Embodiment 1

[0034] Due to the particularity of the marine platform application scene, there are strict requirements for the specifications of the marine platform. For the marine platform skid structure, a lying tank is arranged on the marine platform skid structure, and a large amount of mixture of waste oil and seawater will be stored in the lying tank during offshore operation. Therefore, the stability and bearing capacity of the marine platform skid structure are greatly required. If the marine platform skid structure is assembled by using large sections, due to the large overall size and weight of the large sections, the weight of the marine platform skid structure is increased, which not only has high manufacturing cost and large personnel assembly difficulty, but also is difficult to balance the requirements for the strength and height of the marine platform skid structure under the limitation of offshore operation.

[0035] As shown in Figure 1 , it is a pry block 12 composed of a pattern plate as a bottom plate in the present application, and a square structure bottom plate 1 is obtained by laying and assembling the pry block 12. The pattern plate used is 7.96m*4m, and other small angle steels, I-beams and the like are used in cooperation. The average weight of the pry block 12 per meter is 55.01kg. Overflow holes 11 are arranged on the side of the structure bottom plate 1.

[0036] Figure 1 The structure bottom plate 1 has the problem of poor bearing capacity due to the use of small sections for assembly. Therefore, auxiliary support frames 2 are arranged on the symmetrical two sides of the structure bottom plate 1, as shown in Figure 2 .

[0037] The auxiliary support frame 2 includes a bottom rod 21, a top rod 22 and a support rod for connecting the bottom rod 21 and the top rod 22, and a connection mode is specifically shown in Figure 2 . The support rod includes a straight pull rod 23 and an inclined pull rod 24. First, the bottom rod 21 and the top rod 22 are connected and fixed by using the straight pull rod 23. Then, other end points are connected in an inclined angle connection mode by using the inclined pull rod 24 and are welded and fixed, so as to finally form a trapezoidal truss mechanism.

[0038] In order to further ensure the stress stability of the auxiliary support frame 2, two straight pull rods 23 are arranged. The fixed points of the two straight pull rods 23 on the bottom rod 21 divide the bottom rod 21 into three sections, i.e., an a section 25, a b section 26 and a c section 27. The distance from one end of the bottom rod 21 to the fixed point of the nearest straight pull rod 23 is the a section 25. The distance from the farther straight pull rod to the other end is the c section 27. The distance between the two straight pull rods is the b section 26. The length ratio of the a section 25, the b section 26 and the c section 27 on the bottom rod 21 is 2:1:2. The fixed points of the two straight pull rods 23 correspondingly divide the top rod 22 into three sections, i.e., an a section 25, a b section 26 and a c section 27. The length ratio of the a section 25, the b section 26 and the c section 27 on the top rod 22 is 1:1:1.

[0039] In the above structure, other end points are connected in a triangular structure by using the inclined pull rod 24 to connect at an inclined angle, thereby improving the overall stability of the auxiliary support frame 2, and finally obtaining an auxiliary support frame 2 with an isosceles trapezoidal truss mechanism.

[0040] As shown in Figure 2 two horizontal tanks 3 are fixed at the round hole positions on the structure bottom plate 1, and then Figure 3 As shown in the figure, the bottom of the horizontal tank 3 is provided with a saddle 31, and the saddle 31 includes a bottom plate 311 and a web plate 312.

[0041] Specifically, according to the above division of the three sections a, b, and c of the bottom rod 21, the structure bottom plate 1 can also be divided into three regions. The round holes connected with the saddle 31 of the horizontal tank 3 are arranged in the a section and the c section regions of the structure bottom plate. The saddle bottom plates 31 of the two horizontal tanks are respectively fixed on the round holes in the a section 25 and the c section 27 regions of the structure bottom plate 1. The web plates 312 on both sides of the saddle 31 are respectively welded and fixed with the inclined pull rods 24 located in the region.

[0042] In combination with Figure 1 a connecting beam 13 is arranged on the back of the structure bottom plate at the position where the horizontal tank is installed, thereby improving the load-bearing capacity of the structure bottom plate 1 for the horizontal tank. The weight of a single connecting beam is 1671.6 kg.

[0043] The total weight of the heavy ocean platform bottom pry structure obtained by finally combining is 5 tons. In order to reduce the weight of the ocean platform bottom pry structure, the ocean platform bottom pry structure is usually designed as a planar structure, and it is difficult to design the ocean platform bottom pry structure with a certain space structure as provided in the present application. Compared with the planar structure, the device of the present application performs better in stability and safety.

[0044] If a planar structure plate with a load-bearing capacity comparable to that of the light-weight ocean bottom pry structure is obtained by splicing large sections, at least 10 tons of large steel sections are required for splicing. In comparison, the light-weight ocean platform bottom pry structure obtained by using the technical solution of the present application has a reduced overall weight, and at least 50% of the steel raw materials can be saved.

[0045] The above only describes the preferred embodiments of the present application. It should be noted that for ordinary skilled persons in the technical field, several improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A lightweight marine platform skid structure, characterized by: The utility model relates to a kind of structure bottom plate (1), two auxiliary support frames (2) and two horizontal tanks (3), the auxiliary support frame (2) is arranged on the two sides of the structure bottom plate (1) symmetry, the bottom of the horizontal tank (3) is equipped with saddle (31), the saddle (31) is fixedly connected with the structure bottom plate (1) and the auxiliary support frame (2);Position back surface for fixing the saddle (31) on the structure bottom plate (1) is equipped with connecting beam (13); The structure bottom plate (1) is a square lattice structure composed of pry block (12), the pry block (12) is composed of a plurality of parallel steel bottom plates, and the bottom plate is provided with a fixing hole;The structure bottom plate (1) is provided with a round hole connected with the saddle (31) of the horizontal tank (3). The auxiliary support frame (2) includes a bottom rod (21), a top rod (22) and a support rod, the bottom rod (21) and the top rod (22) are provided with adjusting holes, and the bottom rod (21) and the top rod (22) are sequentially connected and combined into a trapezoidal truss structure by the adjusting holes and the support rod.

2. A lightweight marine platform skid structure as claimed in claim 1, wherein: The pry block (12) is composed of 5-10 bottom plates, and the bottom plate is provided with 3-5 fixing holes.

3. A lightweight marine platform skid structure as defined in claim 1 wherein: The pry block (12) is provided with a flange hole, a limiting mechanism and a drainage flange on the side.

4. A lightweight marine platform skid structure as defined in claim 1 wherein: The length of the bottom rod (21) is greater than the length of the top rod (22), and the length of the bottom rod (21) is not longer than the total length of the structure bottom plate (1). The trapezoidal truss structure is an isosceles trapezoidal truss structure.

5. A lightweight marine platform skid structure as defined in claim 1 wherein: The support rod includes a straight pull rod (23) and an inclined pull rod (24), the straight pull rod (23) is arranged at the middle position of the bottom rod (21), and other positions needing to be fixed by joints are connected and fixed in the form of inclined connection by the inclined pull rod (24).

6. A lightweight marine platform skid structure as claimed in claim 5, wherein: The straight pull rod (23) has two, the distance between the straight pull rod (23) closest to one end of the bottom rod (21) from the end is a section (25), the distance between the straight pull rod (23) far from the end to the other end is a section (27), and the distance between the two straight pull rods is a section (26), the length ratio of the three sections (25), (26) and (27) is 2:1:2, and the length ratio of the corresponding three sections (25), (26) and (27) on the top rod (22) is 1:1:

1.

7. A lightweight marine platform skid structure as defined in claim 1 wherein: The saddle (31) includes a bottom plate (311) and two webs (312), the structure bottom plate (1) is divided into three regions according to the three sections (25), (26) and (27) divided on the bottom rod (21), the bottom plate (311) of the saddle (31) is fixed on the round hole in the a section (25) and the c section (27) region, and the webs (312) on both sides of the saddle (31) are welded and fixed with the inclined pull rod (24) in the region.

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