Oil bag and ballast water combined large offshore floating platform

Abstract

The invention relates to an oil bag and ballast water combined large offshore floating platform which comprises a platform body and a buoyancy adjusting device, and a moon pool is arranged in the middle of the platform body; the buoyancy adjusting device comprises an oil bag buoyancy adjusting device and a ballast water buoyancy adjusting device; wherein the underwater depth of the platform body is quickly adjusted through the ballast water buoyancy adjusting device; the platform body is accurately adjusted to be stabilized at the specified depth through the oil bag buoyancy adjusting device; the ballast water buoyancy adjusting device comprises a first ballast tank and a second ballast tank, and the first ballast tank and the second ballast tank are arranged in the platform body; the oil bag buoyancy adjusting device comprises an outer oil bag and an inner oil bag, the outer oil bag is arranged in the moon pool, and the inner oil bag is arranged in the platform body. The device can effectively achieve the functions of floating and diving in water and keeping depth, has the advantages of being short in response time, high in control precision and low in energy consumption, and provides sufficient guarantee for long-time underwater detection work.

Description

Technical Field

[0001] The invention relates to the technical field of marine engineering, in particular to a large offshore floating platform combined with oil bladders and ballast water. Background Art

[0002] As the largest ecosystem on Earth, the ocean contains abundant biological resources, mineral resources and renewable resources. As the global development of marine resources intensifies, monitoring of the marine environment and resource exploration have become increasingly important. This is not only related to the sustainable use of marine resources, but also directly related to economic development and national security.

[0003] At present, the main methods of underwater detection include: marine buoys, underwater robots and scientific research vessels, among which the submerged buoys have the characteristics of long endurance and easy use. The working method underwater is generally to use weights and mooring cables to keep the submerged buoys in a fixed position underwater, monitor the environment of the sea area within a certain range and regularly send back the collected data, but this working method can only monitor at a fixed point and has a limited monitoring range. In order to get rid of the limitation of the monitoring range, the functions and characteristics of the surface buoys and submerged buoys are integrated into a comprehensive offshore floating platform to meet the needs of carrying out operations at different depths underwater.

[0004] The methods of achieving underwater depth setting and hovering mainly include thruster adjustment and buoyancy adjustment. The thruster adjustment method mainly adjusts the force state of the platform underwater to a slight positive buoyancy, and generates downward thrust through the vertical thrusters loaded to maintain the stability of the platform. The biggest drawback of this method is that the thrusters have to run at a high frequency underwater, which consumes a lot of energy, and the platform's loading capacity is limited, which cannot meet the needs of long-term monitoring. Buoyancy adjustment achieves depth control by adjusting its own gravity and buoyancy. This method has the characteristics of low power consumption and low cost.

[0005] Ballast water is used to adjust the platform's own gravity, which is simple and reliable, safe and environmentally friendly, low cost, and easy to control. However, due to the large flow rate of the ballast pump, the accuracy is difficult to control, and it is difficult to meet the platform's function of maintaining stability underwater. The form of discarding ballast is mostly used for underwater robots. This form is simple to use and convenient to adjust the buoyancy. However, by discarding ballast, the platform's gravity can only be reduced. It is impossible to adjust the underwater depth multiple times during a single operation, and the ballast must be re-installed before each operation. It is not suitable for the buoyancy adjustment of offshore floating platforms.

[0006] Existing methods of achieving underwater depth setting and hovering have the disadvantages of slow response time, low control accuracy and high energy consumption.

[0007] For this purpose, we propose a large offshore floating platform which is a combination of oil bladders and ballast water. Summary of the invention

[0008] In view of the shortcomings of the above-mentioned existing production technology, the applicant provides a large offshore floating platform combined with oil bladders and ballast water, which can effectively realize the functions of floating up and down and setting depth in the water, and has the characteristics of fast response time, high control accuracy and low energy consumption. The ballast water system can effectively realize the rapid adjustment of the gravity of the floating platform to achieve the purpose of rapid floating and diving; the oil bladder can realize the precise adjustment of the platform's buoyancy and underwater posture, so that the platform can be stably maintained at a fixed depth, thereby avoiding the energy consumption caused by the need to set the depth by other means, and providing sufficient guarantee for long-term underwater detection work.

[0009] The technical solution adopted by the present invention is as follows:

[0010] A large offshore floating platform combined with oil bladders and ballast water, comprising:

[0011] The platform body, with a moon pool in the middle;

[0012] A buoyancy regulating device, which includes an oil bag buoyancy regulating device and a ballast water buoyancy regulating device;

[0013] Among them, the ballast water buoyancy adjustment device is used to quickly adjust the depth of the platform body under water; the oil bag buoyancy adjustment device is used to accurately adjust the platform body to stabilize at a specified depth;

[0014] The ballast water buoyancy regulating device comprises a first ballast tank and a second ballast tank, and the first ballast tank and the second ballast tank are arranged in the platform body;

[0015] The oil bladder buoyancy regulating device comprises an outer oil bladder and an inner oil bladder, wherein the outer oil bladder is arranged in the moon pool and the inner oil bladder is arranged in the platform body.

[0016] It is further characterized by:

[0017] The platform body is also provided with a first equipment compartment, a second equipment compartment, a battery compartment, a control compartment and a counterweight compartment.

[0018] An inner oil bag and a high-pressure pump are both provided in the first equipment compartment and the second equipment compartment. The oil outlet of the inner oil bag is connected to the oil inlet of the outer oil bag through the fourth solenoid valve, the high-pressure pump and the second watertight interface; the oil inlet of the inner oil bag is connected to the oil outlet of the outer oil bag through the third solenoid valve and the second watertight interface.

[0019] The ballast tank is provided with a ballast block, and the center of gravity of the platform body is adjusted by loading the ballast block. A sea valve and a seawater filter are provided at the bottom of the ballast tank.

[0020] The control cabin is provided with a ballast pump, a distribution box and a control unit.

[0021] A lithium battery pack is arranged in the battery compartment.

[0022] The first ballast tank and the second ballast tank are both watertight tanks, and the first ballast tank and the second ballast tank are both provided with a first watertight interface at the bottom, and the first ballast tank and the second ballast tank are provided with a first air valve and a second air valve at the top, the first air valve is communicated with the outside of the first ballast tank and the second ballast tank, and the second air valve is communicated with the first equipment compartment and the second equipment compartment, and liquid level sensors are provided in the first ballast tank and the second ballast tank.

[0023] The water inlet pipes of the first ballast tank and the second ballast tank are connected to the outside of the first ballast tank and the second ballast tank through the first solenoid valve, the seawater filter, and the sea valve in sequence; the water outlet pipes of the first ballast tank and the second ballast tank are connected to the outside of the first ballast tank and the second ballast tank through the second solenoid valve, the ballast pump, the seawater filter, and the sea valve in sequence.

[0024] The water inlet pipe system and the water outlet pipe system of the first ballast tank and the second ballast tank are respectively connected to the seawater filter and the sea valve through a tee.

[0025] The upper part of the platform body shell is angled for transition, the bottom part of the platform body shell is arc-shaped for transition, and the middle of the platform body is connected from top to bottom in the form of a moon pool.

[0026] The beneficial effects of the present invention are as follows:

[0027] The present invention has a compact and reasonable structure, is easy to operate, can effectively realize the functions of floating up and down and setting depth in the water, and has the characteristics of fast response time, high control accuracy and low energy consumption. The ballast water system can effectively realize the rapid adjustment of the gravity of the floating platform to achieve the purpose of rapid floating and diving; the oil bag can realize the precise adjustment of the platform buoyancy and underwater posture, so that the platform can be stably maintained at a fixed depth, thereby avoiding the energy consumption caused by the need to set the depth by other means, and providing sufficient guarantee for long-term underwater detection work.

[0028] At the same time, the present invention also has the following advantages:

[0029] (1) The platform body has the function of rising and falling in water and hovering at a fixed depth. The gravity and buoyancy are adjusted through the cooperation of ballast water, external oil bladder and internal oil bladder. When floating or diving at a great depth, the gravity of the platform body is adjusted by ballast water, so that the platform body can quickly reach the designated operating depth. During the process, the depth sensor transmits the depth information to the control unit, and the control unit controls the start and stop of the ballast pump, the first solenoid valve and the second solenoid valve to achieve rapid response.

[0030] (2) Accurate and stable hovering is achieved through the cooperation of the outer oil bag and the inner oil bag. When adjustment is required within a small depth range, the buoyancy of the platform body is adjusted through the cooperation of the outer oil bag and the inner oil bag. The control unit cooperates with the flow meter between the outer oil bag and the inner oil bag to accurately control the amount of oil delivery, which can achieve precise adjustment within a small range and effectively reduce energy consumption.

[0031] (3) The platform body is a cylindrical structure made of high-strength aluminum alloy, which has strong pressure resistance underwater. The moon pool in the middle can improve the stability of the underwater lifting process. The external oil bags evenly arranged inside the moon pool can be independently controlled to achieve the posture balance control of the platform body underwater. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure of the present invention.

[0033] Figure 2 It is a schematic diagram of the internal arrangement of the present invention.

[0034] Figure 3 It is an internal cross-sectional view of the present invention.

[0035] Among them: 1. Platform body; 2. Moon pool; 3. External oil bag; 4. First equipment compartment; 5. Second equipment compartment; 6. Battery compartment; 7. Control compartment; 8. First ballast compartment; 9. Second ballast compartment; 10. Counterweight compartment; 11. Internal oil bag; 12. High-pressure pump; 13. Ballast pump; 14. Distribution box; 15. Control unit; 16. First watertight interface; 17. First air valve; 18. Second air valve; 19. Lithium battery pack; 20. Counterweight; 21. Sea valve; 22. Seawater filter; 23. First solenoid valve; 24. Second solenoid valve; 25. Third solenoid valve; 26. Second watertight interface; 27. Fourth solenoid valve. DETAILED DESCRIPTION

[0036] The specific implementation of the present invention is described below in conjunction with the accompanying drawings.

[0037] like Figure 1-Figure 3 As shown, a large offshore floating platform combined with oil bladders and ballast water includes a platform body 1, a buoyancy regulating device, and a control unit 15. The platform body 1 is a cylindrical structure as a whole, and a moon pool 2 is arranged in the middle of the platform body 1. Four outer oil bladders 3 are evenly arranged inside the moon pool 2.

[0038] The interior of the platform body 1 is divided into a first equipment compartment 4 , a second equipment compartment 5 , a battery compartment 6 , a control compartment 7 , a first ballast compartment 8 , a second ballast compartment 9 and a counterweight compartment 10 . The first equipment compartment 4 and the second equipment compartment 5 are both provided with an inner oil bag 11 and a high-pressure pump 12, and the control compartment 7 is provided with a ballast pump 13, a distribution box 14 and a control unit 15; the first ballast compartment 8 and the second ballast compartment 9 are both watertight compartments, and the first ballast compartment 8 and the second ballast compartment 9 are both provided with a first watertight interface 16 at the bottom, and the first ballast compartment 8 and the second ballast compartment 9 are provided with a first breathable valve 17 and a second breathable valve 18 at the top, the first breathable valve 17 is communicated with the outside of the first ballast compartment 8 and the second ballast compartment 9, and the second breathable valve 18 is communicated with the first equipment compartment 4 and the second equipment compartment 5, and the first ballast compartment 8 and the second ballast compartment 9 are provided with a liquid level sensor; a group of lithium battery packs 19 are provided in the battery compartment 6, and the lithium battery packs 19 are used for power supply; a counterweight block 20 is provided in the counterweight compartment 10, and the center of gravity of the platform body 1 can be adjusted by loading the counterweight block 20; a sea valve 21 and a seawater filter 22 are provided at the bottom of the counterweight compartment 10.

[0039] The buoyancy regulating device includes an oil bag buoyancy regulating device and a ballast water buoyancy regulating device. The oil bag buoyancy regulating device includes an outer oil bag 3, an inner oil bag 11, a high-pressure pump 12, a third solenoid valve 25, a fourth solenoid valve 27, and a second watertight interface 26. The ballast water buoyancy regulating device includes a first ballast tank 8, a second ballast tank 9, a first solenoid valve 23, a second solenoid valve 24, a sea valve 21, a seawater filter 22, and the like.

[0040] The upper part of the shell of the platform body 1 is angled and transitioned, the bottom of the shell of the platform body 1 is arc-shaped and transitioned, and the middle of the platform body 1 is connected from top to bottom in the form of a moon pool 2.

[0041] The platform body 1 has first ballast tanks 8 and second ballast tanks 9 inside and outside thereof. The platform body 1 is provided with first equipment compartment 4, second equipment compartment 5, battery compartment 6 and control compartment 7 inside the first ballast tank 8 and second ballast tank 9. The platform body 1 has a counterweight compartment 10 at the bottom inside.

[0042] A DC motor is also provided in the first equipment compartment 4 and the second equipment compartment 5, and the high pressure pump 12 is driven by the DC motor. The oil outlet of the inner oil bag 11 is connected to the oil inlet of the outer oil bag 3 through the fourth electromagnetic valve 27, the high pressure pump 12, and the second watertight interface 26. The oil inlet of the inner oil bag 11 is connected to the oil outlet of the outer oil bag 3 through the third electromagnetic valve 25 and the second watertight interface 26.

[0043] The water inlet pipes of the first ballast tank 8 and the second ballast tank 9 are connected to the outside of the first ballast tank 8 and the second ballast tank 9 through the first solenoid valve 23, the seawater filter 22, and the sea valve 21 in sequence, and the water outlet pipes of the first ballast tank 8 and the second ballast tank 9 are connected to the outside of the first ballast tank 8 and the second ballast tank 9 through the second solenoid valve 24, the ballast pump 13, the seawater filter 22, and the sea valve 21 in sequence. The water inlet pipes and the water outlet pipes of the first ballast tank 8 and the second ballast tank 9 are connected to the seawater filter 22 and the sea valve 21 through a tee.

[0044] When the platform body 1 floats up and dives, it is first regulated by ballast water. Before diving, the sea valve 21 and the first breathable valve 17 are opened, and seawater enters the first ballast tank 8 and the second ballast tank 9 through the seawater filter 22, the first electromagnetic valve 23 and the first watertight interface 16. The gravity of the platform body 1 increases, and diving is achieved when the gravity exceeds the buoyancy. When floating up, the first electromagnetic valve 23 is in a closed state, the ballast pump 13 and the second electromagnetic valve 24 are started, and the second breathable valve 18 is opened after running for a period of time. The water in the first ballast tank 8 and the second ballast tank 9 is pumped by the ballast pump 13 and then discharged through the sea valve 21. The gravity of the platform body 1 decreases, and floating is achieved when the gravity is lower than the buoyancy.

[0045] The first ballast tank 8 and the second ballast tank 9 provide the function of quickly adjusting the underwater depth. Since the ballast pump 13 has a large flow rate and low precision, it is easy to cause the platform body 1 to fluctuate up and down at a specified depth, and it is not easy to control it at a fixed depth. In addition, the start and stop of the ballast pump 13 and the opening and closing of the first solenoid valve 23 and the second solenoid valve 24 are frequently controlled, resulting in high energy consumption, which is not conducive to long-term work underwater.

[0046] When the platform body 1 is close to the specified depth, the buoyancy adjustment is required by the outer oil bladder 3 and the inner oil bladder 11 with higher precision and lower energy consumption. When the platform body 1 is in the deep sea, the outer oil bladder 3 is subjected to the pressure of seawater. When the third solenoid valve 25 is in the closed state, the buoyancy of the platform body 1 remains unchanged. When the third solenoid valve 25 is in the open state, the oil in the outer oil bladder 3 is automatically transported to the inner oil bladder 11 through the second watertight interface 26, and the buoyancy of the platform body 1 is reduced, so that the platform body 1 can dive. A flow meter is set on the oil pipeline between the outer oil bladder 3 and the inner oil bladder 11 to accurately detect the flow rate of oil in the oil pipeline. When the platform body 1 needs to increase the buoyancy, the fourth solenoid valve 27 is opened, and the high-pressure pump 12 is operated to pump the oil in the inner oil bladder 11 to the outer oil bladder 3. The volume of the outer oil bladder 3 increases, and the buoyancy of the platform body 1 increases, so that it can float.

[0047] The platform body 1 has the functions of lifting and lowering in water and hovering at a fixed depth. The gravity and buoyancy are adjusted by the cooperation of ballast water, the outer oil bag 3 and the inner oil bag 11. When floating up or diving at a great depth, the gravity of the platform body 1 is adjusted by ballast water, so that the platform body 1 can quickly stabilize at the designated operating depth. During the process, the depth sensor transmits the depth information to the control unit 15, and the control unit 15 controls the start and stop of the ballast pump 13, the first solenoid valve 23 and the second solenoid valve 24 to achieve rapid response.

[0048] Accurate and stable hovering is achieved through the cooperation between the outer oil bag 3 and the inner oil bag 11. When adjustment is required within a small depth range, the buoyancy of the platform body 1 is adjusted through the cooperation between the outer oil bag 3 and the inner oil bag 11. The control unit 15 cooperates with the flow meter between the outer oil bag 3 and the inner oil bag 11 to accurately control the amount of oil delivery, which can achieve precise adjustment within a small range and effectively reduce energy consumption.

[0049] The platform body 1 is a cylindrical structure made of high-strength aluminum alloy, which has strong pressure resistance underwater. The moon pool 2 in the middle can improve the stability during underwater lifting and lowering.

[0050] The external oil bags 3 evenly arranged inside the moon pool 2 can be independently controlled to achieve the posture balance control of the platform body 1 underwater.

[0051] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any form of modification may be made within the scope of protection of the present invention.

Claims

1. A large offshore floating platform combined with oil bladders and ballast water, characterized in that: include: A platform body (1) with a moon pool (2) disposed in the middle; A buoyancy regulating device, which includes an oil bag buoyancy regulating device and a ballast water buoyancy regulating device; The ballast water buoyancy adjustment device is used to quickly adjust the depth of the platform body (1) under water; the oil bag buoyancy adjustment device is used to accurately adjust the platform body (1) to stabilize at a specified depth; The ballast water buoyancy regulating device comprises a first ballast tank (8) and a second ballast tank (9), wherein the first ballast tank (8) and the second ballast tank (9) are arranged in the platform body (1); The oil bladder buoyancy regulating device comprises an outer oil bladder (3) and an inner oil bladder (11); the outer oil bladder (3) is arranged in the moon pool (2), and the inner oil bladder (11) is arranged in the platform body (1).

2. A large offshore floating platform combined with oil bladders and ballast water as claimed in claim 1, characterized in that: The platform body (1) is also provided with a first equipment compartment (4), a second equipment compartment (5), a battery compartment (6), a control compartment (7) and a counterweight compartment (10).

3. A large offshore floating platform combined with oil bladder and ballast water as claimed in claim 2, characterized in that: An inner oil bag (11) and a high-pressure pump (12) are provided in both the first equipment compartment (4) and the second equipment compartment (5); the oil outlet of the inner oil bag (11) is connected to the oil inlet of the outer oil bag (3) via a fourth solenoid valve (27), the high-pressure pump (12) and a second watertight interface (26); and the oil inlet of the inner oil bag (11) is connected to the oil outlet of the outer oil bag (3) via a third solenoid valve (25) and a second watertight interface (26).

4. A large offshore floating platform combined with oil bladders and ballast water as claimed in claim 2, characterized in that: A ballast block (20) is arranged in the ballast compartment (10), and the center of gravity of the platform body (1) is adjusted by loading the ballast block (20). A sea valve (21) and a seawater filter (22) are arranged at the bottom of the ballast compartment (10).

5. A large offshore floating platform combined with oil bladder and ballast water as claimed in claim 4, characterized in that: The control cabin (7) is provided with a ballast pump (13), a distribution box (14) and a control unit (15).

6. A large offshore floating platform combined with oil bladders and ballast water as claimed in claim 5, characterized in that: A lithium battery pack (19) is arranged in the battery compartment (6).

7. The large offshore floating platform combined with oil bladder and ballast water as claimed in claim 5, characterized in that: The first ballast tank (8) and the second ballast tank (9) are both watertight tanks. The first ballast tank (8) and the second ballast tank (9) are both provided with a first watertight interface (16) at the bottom. The first ballast tank (8) and the second ballast tank (9) are both provided with a first air vent valve (17) and a second air vent valve (18) at the top. The first air vent valve (17) is communicated with the outside of the first ballast tank (8) and the second ballast tank (9). The second air vent valve (18) is communicated with the first equipment cabin (4) and the second equipment cabin (5). Liquid level sensors are provided in the first ballast tank (8) and the second ballast tank (9).

8. A large offshore floating platform combined with oil bladders and ballast water as claimed in claim 7, characterized in that: The water inlet pipes of the first ballast tank (8) and the second ballast tank (9) are connected to the outside of the first ballast tank (8) and the second ballast tank (9) through the first solenoid valve (23), the seawater filter (22) and the sea valve (21) in sequence; the water outlet pipes of the first ballast tank (8) and the second ballast tank (9) are connected to the outside of the first ballast tank (8) and the second ballast tank (9) through the second solenoid valve (24), the ballast pump (13), the seawater filter (22) and the sea valve (21) in sequence.

9. A large offshore floating platform combined with oil bladders and ballast water as claimed in claim 8, characterized in that: The water inlet pipe system and the water outlet pipe system of the first ballast tank (8) and the second ballast tank (9) are respectively connected to the seawater filter (22) and the sea valve (21) through a tee.

10. The large offshore floating platform combined with oil bladder and ballast water as claimed in claim 1, characterized in that: The upper part of the outer shell of the platform body (1) is angled for transition, the bottom part of the outer shell of the platform body (1) is arc-shaped for transition, and the middle of the platform body (1) is connected vertically in the form of a moon pool (2).

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