Functional block of single pile leg loading system

Abstract

According to the functional block of the single pile leg loading system, a bearing function main structure is fixed to the middle of an anti-collision balancing weight and provided with a bottom plate, a mooring support is fixed to the bottom plate and obliquely arranged relative to the horizontal plane, and grooved wheel shafts at the two ends of the mooring support are rotationally connected with a bow grooved wheel and a stern grooved wheel respectively. Three supporting plates are arranged in the length direction of the bottom plate at equal intervals, round holes are formed in the three supporting plates, the pipe joint sequentially penetrates through the round holes in the three supporting plates to be fixed, and the whole pipe joint is in a V shape after penetrating through the three round holes. A left door frame and a right door frame are hinged to the left side and the right side of the anti-collision balancing weight respectively, the left door frame and the right door frame are of frame structures, and after the left door frame and the right door frame are in butt joint, a cover body is formed to cover the bearing function main structure. According to the invention, collision between the fluid transmission hose and the mooring line caused by wave flow influence is avoided; meanwhile, the hose swing amplitude is reduced, fatigue is not prone to occurring, and the hose service life is prolonged; in order to prevent the main structure and the connecting piece of the functional module from being damaged, a protective door frame is added.

Description

Technical Field

[0001] The invention belongs to the field of ship construction and design, and in particular relates to a single pile leg loading system functional block. Background Art

[0002] The offshore loading system operates as follows: the onshore factory delivers oil to the tanker through the submarine pipeline, the monopile loading system (single point mooring device), or vice versa. The monopile loading system enables efficient oil transfer between the onshore factory and the shuttle tanker. This system includes a monopile single point mooring device, mooring cable, and fluid transfer hose.

[0003] The disadvantages of this configuration are: 1. The fluid transmission hose is too long, and due to the influence of waves and currents, it has a large swing range, is prone to fatigue, and affects the life of the hose; 2. The fluid transmission hose and the mooring cable are prone to collision, resulting in oil leakage. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a single pile leg loading system functional block, which aims to achieve the purpose of integrating the middle section of the fluid transmission hose with the mooring cable. The technical solution adopted is:

[0005] A functional block of a single pile leg loading system, a main structure with a bearing function is fixed in the middle of an anti-collision counterweight block, the main structure with a bearing function has a bottom plate, a mooring bracket is fixed on the bottom plate, the mooring bracket is placed obliquely relative to a horizontal plane, the mooring bracket consists of two parallel mooring plates, a sheave shaft is fixed between the ends of the two mooring plates, and a bow sheave and a stern sheave are rotatably connected to the sheave shafts at both ends.

[0006] Three support plates are arranged at equal intervals along the length direction of the bottom plate. Circular holes are opened on the three support plates. The pipe sections are fixed through the circular holes on the three support plates in sequence. After the pipe sections pass through the three circular holes, they are V-shaped as a whole. The ends of the pipe sections are provided with flanges, which are connected to the loading hoses through the flanges.

[0007] The left door frame and the right door frame are hinged on the left and right sides of the anti-collision counterweight respectively. The left door frame and the right door frame are frame structures. After the left door frame and the right door frame are butt-jointed, a cover body is formed to cover the main structure with bearing function.

[0008] Ballast blocks are arranged on the left and right sides of the anti-collision counterweight block, and there are two ballast blocks on each side.

[0009] The above-mentioned single-pile leg loading system functional block, further, has a bow sheave fixed at a lower end of the mooring bracket, and a stern sheave fixed at a higher end of the mooring bracket.

[0010] The above-mentioned single-pile leg loading system functional block further has a bottom plate which is rectangular and is vertically fixed in the middle of the anti-collision counterweight block.

[0011] In the above-mentioned single-pile leg loading system functional block, further, the bow mooring cable is wound around the bow sheave, and the stern mooring cable is wound around the stern sheave.

[0012] In the above-mentioned single-pile leg loading system functional block, further, the anti-collision counterweight block is a frame structure.

[0013] The above-mentioned single-pile-leg loading system functional block further comprises a radar transceiver fixed on the top of the left door frame or the right door frame.

[0014] The present invention integrates mooring and fluid transmission functions, has high integration and compact structure, and plays the role of connecting the bow section loading hose and the stern section loading hose while mooring. Its advantage is that it can avoid the hose from floating due to the long span of the hose, thereby greatly improving the service life of the hose.

[0015] The middle section of the fluid transmission hose is integrated with the mooring cable to avoid the impact of waves and currents that may cause the fluid transmission hose to collide with the mooring cable; at the same time, the swing amplitude of the hose is reduced, fatigue is not easy, and the service life of the hose is increased; in order to avoid damage to the main structure and connectors of the functional module, a protective door frame is added. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention without the left door frame and the right door frame;

[0017] Figure 2 It is a schematic diagram of the structure of the left door frame and the right door frame of the present invention when they are closed;

[0018] Figure 3 It is a schematic diagram of the structure of the present invention when the left door frame and the right door frame are opened;

[0019] Figure 4 yes Figure 3 Schematic diagram of the structure from the perspective of the middle BB;

[0020] Figure 5 It is a structural diagram of the main structure that carries the function;

[0021] Figure 6 It is a schematic diagram of a monopile leg loading system;

[0022] Among them, 1-shuttle tanker, 2-mooring stern cable, 3-functional block, 4-mooring bow cable, 5-anti-collision counterweight, 6-bottom plate, 7-mooring plate, 8-sheave shaft, 9-bow sheave, 10-stern sheave, 11-pipe section, 12-left door frame, 13-right door frame, 14-ballast block, 15-radar transceiver. DETAILED DESCRIPTION

[0023] The present invention will be further described in conjunction with the accompanying drawings.

[0024] A single pile leg loading system functional block, such as Figure 6 As shown, it is arranged between the transmission hose and the mooring cable, and is used to connect the mooring cable and the transmission hose at the shuttle cruise ship end and the mooring end, so that the fluid transmission hose and the mooring cable are integrated into one.

[0025] like Figure 1 As shown, there is a rectangular anti-collision counterweight block, which is a frame structure, and a main structure with a bearing function is fixed in the middle of the anti-collision counterweight block, such as Figure 5 As shown, the main structure with bearing function has a bottom plate, which is rectangular and vertically fixed in the middle of the anti-collision counterweight. A mooring bracket is fixed on the bottom plate. The mooring bracket is tilted relative to the horizontal plane. The mooring bracket consists of two parallel mooring plates. A sheave shaft is fixed between the ends of the two mooring plates. The sheave shafts at both ends are rotatably connected with the bow sheave and the stern sheave respectively. The bow sheave is fixed at the lower end of the mooring bracket, and the stern sheave is fixed at the higher end of the mooring bracket. The bow mooring cable is wound around the bow sheave, and the stern mooring cable is wound around the stern sheave.

[0026] Three support plates are arranged at equal intervals along the length direction of the bottom plate, namely the bow support plate, the middle support plate and the stern support plate. Circular holes are opened on the three support plates. The pipe joints are fixed through the circular holes on the three support plates in sequence. After the pipe joints pass through the three circular holes, they are V-shaped as a whole, and the ends of the pipe joints are provided with flanges.

[0027] like Figure 2 , 3 As shown in 4, the left and right door frames are hinged on the left and right sides of the anti-collision counterweight respectively. The left and right door frames are frame structures. After the left and right door frames are butted together, a cover is formed to cover the main structure with bearing functions. Ballast blocks are arranged on the left and right sides of the anti-collision counterweight, and there are two ballast blocks on each side. A radar transceiver is fixed on the top of the left door frame or the right door frame. When the left door frame is closed with the right door frame, the radar transceiver is located at the top of the door frame, which is used to transmit or receive radar signals to surrounding external floating structures (ships or submarines, etc.) to provide early warning and prevent collision.

[0028] The anti-collision counterweight block is composed of a pipe frame and a welded steel structure, which is used to prevent the entire functional block from being damaged by collision with external objects. The number of counterweights is determined by the ballast block based on the results of hydrodynamic analysis, and is arranged at the four corners of the anti-collision counterweight block to prevent it from affecting the hydrodynamic performance of the shuttle tanker and causing excessive displacement and rotation radius.

Claims

1. A single pile leg loading system functional block, characterized in that: A rectangular anti-collision counterweight (5) is provided, a main structure with a bearing function is fixed in the middle of the anti-collision counterweight, the main structure with a bearing function has a bottom plate (6), a mooring bracket is fixed on the bottom plate, the mooring bracket is placed obliquely relative to a horizontal plane, the mooring bracket is composed of two parallel mooring plates (7), a sheave shaft (8) is fixed between the ends of the two mooring plates, and a bow sheave (9) and a stern sheave (10) are rotatably connected to the sheave shafts at both ends; Three support plates are arranged at equal intervals along the length direction of the bottom plate, and circular holes are opened on the three support plates. The pipe segments (11) are passed through the circular holes on the three support plates in sequence and fixed. After the pipe segments pass through the three circular holes, the whole is V-shaped. The ends of the pipe segments are provided with flanges, which are connected to the loading hoses through the flanges. The left and right sides of the anti-collision counterweight block are respectively hinged with a left door frame (12) and a right door frame (13), the left door frame and the right door frame are frame structures, and after the left door frame and the right door frame are butt-jointed, a cover body is formed to cover the main structure with a bearing function; Ballast blocks (14) are arranged on the left and right sides of the anti-collision counterweight block, and there are two ballast blocks on each side.

2. A monopile leg loading system functional block according to claim 1, characterized in that: A bow sheave is fixed at the lower end of the mooring bracket, and a stern sheave is fixed at the higher end of the mooring bracket.

3. A monopile leg loading system functional block according to claim 1, characterized in that: The bottom plate is rectangular and is vertically fixed in the middle of the anti-collision counterweight block.

4. A monopile leg loading system functional block according to claim 1, characterized in that: The bow mooring cable is wound around the bow sheave, and the stern mooring cable is wound around the stern sheave.

5. A monopile leg loading system functional block according to claim 1, characterized in that: The anti-collision counterweight block is a frame structure.

6. A monopile leg loading system functional block according to claim 1, characterized in that: A radar transceiver is fixed on the top of the left door frame or the right door frame.

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