Cage type single point mooring system

Abstract

A cage-type single-point mooring system relates to the technical field of offshore oil and gas transmission and comprises a cage-type top assembly, the bottom of the cage-type top assembly is connected with a jacket through a pivotal bearing, the jacket is fixedly connected to an inner ring of the pivotal bearing, and the cage-type top assembly is fixedly connected to an outer ring of the pivotal bearing; a liquid slip ring is arranged between the cage type top and the jacket, the upper end of the liquid slip ring is connected with the cage type top, the lower end of the liquid slip ring is connected with the jacket, the top of the liquid slip ring is connected with a telescopic pipe through an oil conveying pipe, the other end of the telescopic pipe is connected with an oil tanker through a floating hose, and the bottom of the liquid slip ring is connected with a J-shaped pipe. The J-shaped pipe is connected with an oil gas tank through a pipeline; a solar cell, an emergency generator set, an air compressor, a folding arm crane, a pneumatic winch and an oil conveying pipe are integrated on the top of the cage type top assembly, the cage type single-point mooring system is supported by a common jacket of an ocean platform, the cage type top assembly is installed above the jacket, installation is easy, and maintenance and repair are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of marine oil and gas transportation, in particular to a cage-type single-point mooring system. Background Art

[0002] Single-point mooring means that an offshore engineering vessel is moored to another fixed or floating structure in a single-point manner. The vessel can make a 360° turn around the structure with the wind and wave flow. Due to the weather vane effect, the moored vessel will be moored in the direction with the smallest environmental force. For offshore oil and gas production, it must also have the function of fluid transportation. Compared with fixed docks, its biggest feature is that the mooring method is "point", that is, large oil tankers or super-large oil tankers can be moored at a deep-water "point" on the offshore sea surface, and then load and unload cargo.

[0003] The existing single-point mooring systems are mainly divided into soft steel arm mooring system, catenary anchor mooring system and buoy mooring system. The soft steel arm mooring system has high manufacturing cost, complex manufacturing process of rotating stator and rotor, and complex manufacturing of electro-hydraulic slip ring; the catenary anchor mooring system has high maintenance cost and complex repair; the buoy type is similar to the catenary anchor type and has high maintenance cost. Therefore, a single-point mooring system with low manufacturing cost, simple process and convenient maintenance is urgently needed to solve the above technical problems. Utility Model Content

[0004] In view of the above deficiencies in the prior art, the purpose of the present invention is to provide a cage-type single-point mooring system that can solve the above technical problems.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A cage-type single-point mooring system comprises a cage-type upper mounting, wherein the bottom of the cage-type upper mounting is connected to a conductor frame via a slewing bearing, the conductor frame is fixedly connected to the inner ring of the slewing bearing, and the cage-type upper mounting is fixedly connected to the outer ring of the slewing bearing; a liquid slip ring is arranged between the cage-type upper mounting and the conductor frame, the upper end of the liquid slip ring is connected to the cage-type upper mounting, and the lower end is connected to the conductor frame, the top of the liquid slip ring is connected to a telescopic tube via an oil pipeline, the other end of the telescopic tube is connected to an oil tanker via a floating hose, the bottom of the liquid slip ring is connected to a J-shaped tube, and the J-shaped tube is connected to an oil and gas tank via a pipeline; a solar cell, an emergency generator set, an air compressor, a folding arm crane, a pneumatic winch and an oil pipeline are integrated on the top of the cage-type upper mounting, the pneumatic winch is connected to the telescopic tube, the air compressor provides power for the pneumatic winch, and a valve is arranged on the oil pipeline.

[0007] Preferably, the number of the J-shaped tubes is two, and the two J-shaped tubes are arranged in opposite directions.

[0008] Preferably, mooring cable joints are symmetrically provided on both sides of the cage-type superstructure, and the mooring cable joints are connected to the tanker through mooring cables.

[0009] Preferably, a boarding platform is also provided on one side of the cage-type upper garment.

[0010] Preferably, a sealing gland is provided on the top of the slewing bearing.

[0011] Preferably, the telescopic tube comprises an inner tube and an outer tube, a limit platform is provided on the inner side of the outer tube, and the inner tube is slidably connected inside the outer tube.

[0012] Preferably, the inner tube and the outer tube are both steel tubes.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The cage-type single-point mooring system of the utility model adopts the common conductor frame support of the offshore platform, and the cage-type upper body is installed above the conductor frame, which is simple to install and easy to maintain.

[0015] 2. The sealing gland in the utility model is used to protect the slewing bearing, prevent it from being corroded by sea water, and reduce the service life of the mooring system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is the front view of the utility model;

[0018] Figure 2 It is a top view of the utility model;

[0019] Figure 3 It is a cross-sectional view of the utility model;

[0020] Figure 4 For the utility model Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 This is a schematic diagram of the connection between the cage-type single-point mooring and the oil tanker of the utility model.

[0022] Description of reference numerals:

[0023] 1-cage type upper installation, 2-slewing bearing, 3-ductor, 4-hydraulic slip ring, 5-oil pipeline, 6-telescopic pipe, 7-floating hose, 8-tanker, 9-J-tube, 10-solar cell, 11-emergency generator set, 12-air compressor, 13-folding arm crane, 14-pneumatic winch, 15-valve, 16-mooring cable joint, 17-mooring cable, 18-boarding platform, 19-sealing gland. DETAILED DESCRIPTION

[0024] The following is a detailed description of the invention of the utility model by way of examples in conjunction with the accompanying drawings of the specification. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Example

[0025] like Figures 1 to 5 As shown, the utility model discloses a cage-type single-point mooring system, including a cage-type upper assembly 1, the bottom of the cage-type upper assembly 1 is connected to a conductor frame 3 through a slewing bearing 2, the conductor frame 3 is fixedly connected to the inner ring of the slewing bearing 2, the cage-type upper assembly 1 is fixedly connected to the outer ring of the slewing bearing 2, the cage-type upper assembly 1 is rotatable relative to the conductor frame 3, and the conductor frame 3 is fixed to the seabed through skirt piles; a sealing gland 19 is provided on the top of the slewing bearing 2, and the sealing gland 19 is provided to protect the slewing bearing 2 and prevent it from being eroded by seawater.

[0026] A liquid slip ring 4 is provided between the cage-type upper assembly 1 and the jacket 3. The upper end of the liquid slip ring 4 is connected to the cage-type upper assembly 1, and the lower end is connected to the jacket 3. Since the wind at sea will drive the oil tanker 8 to shake, the upper end of the liquid slip ring 4 can rotate with the cage-type upper assembly 1, and the lower end is fixed on the jacket 3, which will not affect the oil and gas transportation; the top of the liquid slip ring 4 is connected to a telescopic tube 6 through an oil pipeline 5, and the other end of the telescopic tube 6 is connected to the oil tanker 8 through a floating hose 7, and the bottom of the liquid slip ring 4 is connected to a J-shaped tube 9, the number of the J-shaped tubes 9 is two, and the two J-shaped tubes 9 are arranged in opposite directions, and the J-shaped tube 9 is connected to the oil and gas tank through a pipeline; when the oil and gas are transported, the oil and gas transmitted from the oil tanker 8 are transported to the oil and gas tank on the dock in sequence through the floating hose 7, the telescopic tube 6, the oil pipeline 5, the liquid slip ring 4, the J-shaped tube 9 and the pipeline.

[0027] Furthermore, the telescopic tube 6 includes an inner tube and an outer tube, a limit platform is provided on the inner side of the outer tube, the inner tube is slidably connected inside the outer tube, and both the inner tube and the outer tube are steel tubes.

[0028] The top of the cage-type superstructure 1 is integrated with a solar cell 10, an emergency generator set 11, an air compressor 12, a folding arm crane 13, a pneumatic winch 14 and an oil pipeline 5. A valve 15 is provided on the oil pipeline 5. The solar cell 10 is mainly used to provide power for the monitoring and control system on the mooring system; the emergency generator set 11 is mainly used as an emergency power supply when the solar power generation and storage power is insufficient; the pneumatic winch 14 is connected to the telescopic tube 6, and the air compressor 12 provides power for the pneumatic winch 14; the folding arm crane 13 is used to hoist and repair parts; the oil pipeline 5 and the valve 15 are used to complete the transportation and control of the fluid.

[0029] Mooring cable joints 16 are symmetrically provided on both sides of the cage-type upper body 1 , and the mooring cable joints 16 are connected to the tanker 8 through mooring cables 17 .

[0030] A boarding platform 18 is also provided on one side of the cage-type upper installation 1, so that the staff can climb to the top of the cage-type upper installation 1 through the boarding platform 18 to inspect and repair the equipment.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and application concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cage-type single-point mooring system, characterized in that: It comprises a cage-type upper assembly (1), the bottom of the cage-type upper assembly (1) is connected to a guide tube frame (3) via a slewing bearing (2), the guide tube frame (3) is fixedly connected to the inner ring of the slewing bearing (2), and the cage-type upper assembly (1) is fixedly connected to the outer ring of the slewing bearing (2); A liquid slip ring (4) is provided between the cage-type upper mounting (1) and the guide tube frame (3); the upper end of the liquid slip ring (4) is connected to the cage-type upper mounting (1), and the lower end is connected to the guide tube frame (3); the top of the liquid slip ring (4) is connected to a telescopic tube (6) via an oil pipeline (5); the other end of the telescopic tube (6) is connected to an oil tanker (8) via a floating hose (7); the bottom of the liquid slip ring (4) is connected to a J-shaped tube (9); and the J-shaped tube (9) is connected to an oil and gas tank via a pipeline; The top of the cage-type upper structure (1) is integrated with a solar cell (10), an emergency generator set (11), an air compressor (12), a folding arm crane (13), a pneumatic winch (14) and an oil pipeline (5); the pneumatic winch (14) is connected to the telescopic tube (6); the air compressor (12) provides power for the pneumatic winch (14); and a valve (15) is provided on the oil pipeline (5).

2. A cage-type single-point mooring system as claimed in claim 1, characterized in that: The number of the J-shaped tubes (9) is two, and the two J-shaped tubes (9) are arranged in opposite directions.

3. A cage-type single-point mooring system as claimed in claim 1, characterized in that: Mooring cable joints (16) are symmetrically provided on both sides of the cage-type upper structure (1), and the mooring cable joints (16) are connected to the tanker (8) via mooring cables (17).

4. A cage-type single-point mooring system as claimed in claim 1, characterized in that: A boarding platform (18) is also provided on one side of the cage-type upper garment (1).

5. A cage-type single-point mooring system as claimed in claim 1, characterized in that: A sealing gland (19) is provided on the top of the slewing bearing (2).

6. A cage-type single-point mooring system as claimed in claim 1, characterized in that: The telescopic tube (6) comprises an inner tube and an outer tube, a limit platform is provided on the inner side of the outer tube, and the inner tube is slidably connected inside the outer tube.

7. A cage-type single-point mooring system as claimed in claim 6, characterized in that: The inner tube and the outer tube are both steel tubes.

Images