A new integrated shallow water underwater control system

Abstract

The present invention provides a new integrated shallow water underwater control system, which relates to the technical field of underwater control systems. The new integrated shallow water underwater control system includes a frame part, a hydraulic power unit part, an underwater electronic compartment part, an energy storage part, and a valve group part; the frame part includes an upper top plate, a main frame, etc., and a large number of electrical connectors for divers to manually plug and unplug are installed on one side of the upper end of the upper top plate; the hydraulic power unit part includes an oil tank, an oil tank compensator, a watertight motor, an oil pump, etc., and all of the above components are directly exposed to seawater. In the present invention, its structure is simple, the cost is low, the control valve has a fast response speed, the requirements for components are low, the control system covers all underwater control and monitoring needs, the hydraulic pipeline in the umbilical cable is eliminated, the system's performance requirements for hydraulic components are reduced, and the complex docking locking device is removed. It is easy to install and recover, and the economy is high.

Description

Technical Field

[0001] The invention relates to the technical field of underwater control systems, in particular to a novel integrated shallow water underwater control system. Background Art

[0002] The Bohai oil and gas fields are mainly shallow water oil and gas fields with a depth of 0-40 meters. Since the Bohai oil and gas fields are restricted by navigable areas and military sensitive areas, traditional shallow water oil and gas extraction methods are not applicable. Deep water oil and gas extraction methods are currently used. The deep water oil and gas extraction method is to place the hydraulic power unit on an offshore platform or work ship, and supply hydraulic fluid to the underwater control module through an umbilical cable. However, umbilical cables are expensive, and the deep water method has high requirements for hydraulic components, especially extremely high requirements for leakage. Internal components need to be designed to withstand pressure, which leads to waste of component performance and high costs.

[0003] The underwater equipment in deepwater oil and gas production is installed on the manifold or Christmas tree by precise docking, positioning and locking. The docking and locking mechanism is complex and inconvenient to recover. The underwater control module has a complex structure, and the installation and recovery process is cumbersome and expensive. The cost of the entire system is extremely high, which limits production development.

[0004] In order to develop shallow-water oil and gas fields more economically and efficiently, it is necessary to seek more advanced and economically efficient technologies and equipment to reduce engineering development costs.

[0005] Therefore, those skilled in the art provide a novel integrated shallow water underwater control system to solve the problems raised in the above background technology. Summary of the invention

[0006] 1. Technical issues to be solved

[0007] In view of the shortcomings of the existing technology, in order to develop shallow water oil and gas fields more economically and efficiently, it is necessary to seek more advanced and economical and efficient technologies and equipment to reduce engineering development costs. The present invention provides a new integrated shallow water underwater control system, which solves the problems of complex structure and high cost of current underwater production control systems.

[0008] (II) Technical solution

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0010] A new type of integrated shallow water underwater control system, which integrates the hydraulic power unit and multiple underwater control modules into one control device, including a frame part, a hydraulic power unit part, an underwater electronic compartment part, an energy storage part, and a valve group part;

[0011] The frame part includes an upper top plate, a main frame, etc., and a large number of electrical connectors for divers to manually plug and unplug are installed on one side of the upper end of the upper top plate;

[0012] The hydraulic power unit includes an oil tank, an oil tank compensator, a watertight motor, an oil pump, etc., and all of the above components are directly exposed to seawater;

[0013] The underwater electronic compartment part includes an underwater electronic compartment, which adopts a redundant design, resists seawater pressure through an external shell, and contains relevant components for underwater control and monitoring. A plurality of electrical connectors are installed on the top of the underwater electronic compartment, and are watertightly connected with system-related equipment and electrical connectors manually plugged and unplugged by divers;

[0014] The energy storage part includes a plurality of underwater high-pressure and low-pressure accumulators, and the high-pressure and low-pressure accumulators are mechanically fixed to the main frame;

[0015] The valve group part includes an integrated valve plate, a manually pluggable hydraulic connector, a shuttle valve, a sensor and a plurality of directional control valves. The integrated valve plate is mechanically mounted on the lower end of the upper top plate, and a plurality of diver manually pluggable hydraulic connectors are arranged on the top of the integrated valve plate;

[0016] Through the above technical solution, the entire system can be sent to the seabed by a winch. There are lifting ears on the top of the main frame for lifting, and the bottom is mechanically fixed to the underwater working equipment. The underwater electronic cabin controls and monitors all underwater equipment. It is installed on the main frame with a sealed cabin design. Multiple underwater electronic cabins can be configured for redundancy to improve product reliability. Manual plug-in electrical connectors are installed on the upper top plate and connected to the power lines of the underwater electronic cabin. The directional control valve is fixed to the integrated valve plate by bolts, and the manual plug-in hydraulic connector is installed on the integrated valve plate. The integrated valve plate is fixed to the upper top plate by bolts. The manual plug-in electrical connector and the manual plug-in hydraulic connector are connected to other underwater working equipment by divers.

[0017] Furthermore, a lifting lug is provided on the top of the main frame, and the bottom of the main frame is mechanically fixed to the underwater working equipment;

[0018] Through the above technical solution, the main frame is hoisted through the lifting lugs, so that the entire system can be sent to the seabed through a winch.

[0019] Furthermore, a pressure sensor and a liquid level sensor are installed on the oil tank, and an oil drain port is provided at the bottom of the oil tank;

[0020] Through the above technical solution, the pressure and oil level inside the oil tank are sensed by the pressure sensor and the liquid level sensor to avoid excessive pressure and abnormal liquid level, and the pressure inside the oil tank can be relieved through the oil drain port.

[0021] Furthermore, the oil tank is provided with an oil tank compensator, and each of the oil tanks can be equipped with a plurality of oil tank compensators, and the oil tank compensator can be a bag type or a metal cylinder type, and is connected to the oil tank by means of a connecting sleeve with a flange, and the oil tank and the oil tank compensator are filled with hydraulic oil;

[0022] Through the above technical solution, the return oil pressure of the oil tank hydraulic system should be higher than the seawater pressure to prevent seawater from entering the hydraulic system. At the same time, it should be able to automatically compensate its own volume as the return oil volume changes.

[0023] Furthermore, a self-cleaning system is installed on the top of the oil tank, and the self-cleaning system consists of a watertight motor, an oil pump, a filter, a one-way valve, a pressure difference sensor, a pressure sensor, and an overflow valve. The watertight motor is fixed to the bottom of the main frame by bolts, and the oil pump is connected to the watertight motor through a coupling;

[0024] Through the above technical solution, the oil is kept clean by the self-cleaning system.

[0025] Furthermore, the hydraulic power unit part also includes an oil supply pipeline and an oil return pipeline. The oil supply pipeline is equipped with components such as an overflow valve, a one-way valve, a filter, a reversing valve, an accumulator, a stop valve, a shuttle valve, a pressure sensor, and a flow sensor. The oil return pipeline is equipped with an overflow valve, a filter, a one-way valve, a sensor, etc. The oil outlet pipe of the overflow valve on the oil return pipeline is connected to the plugging and draining sea interface;

[0026] Through the above technical scheme, after the watertight motor is powered by the cable, the oil pump is driven by the coupling to suck the hydraulic oil from the oil tank into the oil pump for pressurization, and enter the actuator through the one-way valve and the oil supply pipeline. The over-pressure part flows back to the oil tank through the overflow valve, and the return oil in the actuator directly returns to the oil tank through the return oil pipe.

[0027] Further, the manual plug-in electrical connector and the manual plug-in hydraulic connector are both installed on the upper top plate;

[0028] Through the above technical solution, the manually pluggable electrical connector and the manually pluggable hydraulic connector are connected with other underwater working equipment by divers.

[0029] Furthermore, a plurality of stainless steel meshes are installed on the outside of the main frame, and the main frame is fixed to the underwater manifold or Christmas tree by mechanical means;

[0030] Through the above technical solution, the stainless steel mesh can prevent marine organisms from attaching to the components, thereby protecting the components.

[0031] Furthermore, the above device can be assembled on a main frame and sent into the sea by a winch, and maintained at a normal temperature by cooling with the help of seawater.

[0032] (III) Beneficial effects

[0033] The present invention provides a novel integrated shallow water underwater control system, which has the following beneficial effects:

[0034] 1. The present invention provides a novel integrated shallow water underwater control system, which has a simple structure, low cost, fast control valve response speed, low requirements for components, and a control system that covers all underwater control and monitoring needs, eliminates the hydraulic pipelines in the umbilical cable, reduces the system's performance requirements for hydraulic components, removes complex docking and locking devices, is easy to install and recover, and is highly economical.

[0035] 2. The present invention provides a novel integrated shallow water underwater control system, which integrates a hydraulic power unit and multiple underwater control modules into one, and is installed underwater, eliminating the hydraulic pipelines in the umbilical cable. The hydraulic power unit is located underwater, which is conducive to heat dissipation and has a fast supply speed underwater. The valve control response speed is fast, which reduces the requirements of the underwater oil and gas control system for the leakage of hydraulic components.

[0036] 3. The present invention provides a novel integrated shallow water underwater control system, which abandons the method of configuring multiple underwater control modules. One device can meet all underwater control and monitoring requirements, greatly reducing costs. It abandons the traditional high-precision docking and locking device of underwater control modules, and there is no need for conventional underwater control module docking and locking. All operations are completed by divers at the top of the system, which is easy to operate and more convenient to recover after a failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is an axonometric diagram of the control device of the integrated shallow water underwater control system of the present invention;

[0038] Figure 2 It is a schematic diagram of the internal structure of the control device of the integrated shallow water underwater control system of the present invention;

[0039] Figure 3 It is a schematic diagram of the top structure of the integrated valve plate of the present invention;

[0040] Figure 4 It is a schematic diagram of the top structure of the integrated valve bottom of the present invention;

[0041] Figure 5 It is a schematic diagram of the installation structure of the stainless steel mesh of the control device of the integrated shallow water underwater control system of the present invention.

[0042] Among them, 1. Main frame; 2. Upper top plate; 3. Manual plug-in electrical connector; 4. Oil tank; 5. Oil tank compensator; 6. Watertight motor; 7. Underwater electronic compartment; 8. Accumulator; 9. Manual plug-in hydraulic connector; 10. Integrated valve plate; 11. Shuttle valve; 12. Sensor; 13. Directional control valve; 14. Lifting ear; 15. Stainless steel mesh. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Example:

[0045] like Figure 1-5 As shown, an embodiment of the present invention provides a novel integrated shallow water underwater control system, which integrates a hydraulic power unit and multiple underwater control modules into a control device, including a frame part, a hydraulic power unit part, an underwater electronic compartment part, an energy storage part, and a valve group part;

[0046] The frame part includes an upper top plate 2, a main frame 1, etc. A large number of electrical connectors 3 for divers to manually plug and unplug are installed on one side of the upper end of the upper top plate 2;

[0047] The hydraulic power unit includes an oil tank 4, an oil tank compensator 5, a watertight motor 6, an oil pump, etc., and all of the above components are directly exposed to seawater;

[0048] The underwater electronic compartment part includes an underwater electronic compartment 7, which adopts a redundant design, resists seawater pressure through an external shell, and contains relevant components for underwater control and monitoring. A plurality of electrical connectors are installed on the top of the underwater electronic compartment 7, and are watertightly connected with system-related equipment and the electrical connector 3 manually plugged and unplugged by divers;

[0049] The energy storage part includes a plurality of underwater high-pressure and low-pressure accumulators 8, and the high-pressure and low-pressure accumulators 8 are mechanically fixed to the main frame 1;

[0050] The valve group part includes an integrated valve plate 10, a manually pluggable hydraulic connector 9, a shuttle valve 11, a sensor 12 and a plurality of directional control valves 13. The integrated valve plate 10 is mechanically mounted on the lower end of the upper top plate 2. A plurality of diver manually pluggable hydraulic connectors 9 are arranged on the top of the integrated valve plate 10.

[0051] The entire system can be sent to the seabed by a winch. There is a lifting lug 14 on the top of the main frame 1 for lifting, and the bottom is mechanically fixed to the underwater working equipment. The underwater electronic cabin 7 controls and monitors all underwater equipment and is installed on the main frame 1 with a sealed cabin design. Multiple underwater electronic cabins 7 can be configured for redundancy to improve product reliability. The manual plug-in electrical connector 3 is installed on the upper top plate 2 and is connected to the power line of the underwater electronic cabin 7. The directional control valve 13 is fixed to the integrated valve plate 10 by bolts, and the manual plug-in hydraulic connector 9 is installed on the integrated valve plate 10. The integrated valve plate 10 is fixed to the upper top plate 2 by bolts. The manual plug-in hydraulic connector 9 and the manual plug-in electrical connector 3 are connected with other underwater working equipment by divers.

[0052] A lifting lug 14 is provided on the top of the main frame 1, and the bottom of the main frame 1 is mechanically fixed to the underwater working equipment. The lifting lug 14 is used to lift the main frame 1, so that the entire system can be delivered to the seabed by a winch.

[0053] A pressure sensor and a liquid level sensor are installed on the oil tank 4, and an oil drain port is set at the bottom of the oil tank 4. The pressure sensor and the liquid level sensor sense the pressure and oil level inside the oil tank 4 to avoid excessive pressure and abnormal liquid level, and the pressure inside the oil tank 4 can be relieved through the oil drain port.

[0054] The oil tank 4 is provided with an oil tank compensator 5. Each oil tank 4 can be equipped with a plurality of oil tank compensators 5. The oil tank compensator 5 can be a bag type or a metal cylinder type, and is connected to the oil tank 4 by means of a connecting sleeve with a flange. The oil tank 4 and the oil tank compensator 5 are filled with hydraulic oil. The return oil pressure of the oil tank hydraulic system should be higher than the seawater pressure to prevent seawater from entering the hydraulic system. At the same time, it should be able to automatically compensate its own volume as the return oil volume changes.

[0055] A self-cleaning system is installed on the top of the oil tank 4. The self-cleaning system consists of a watertight motor 6, an oil pump, a filter, a one-way valve, a pressure difference sensor, a pressure sensor, and an overflow valve. The watertight motor 6 is fixed to the bottom of the main frame 1 by bolts, and the oil pump is connected to the watertight motor 6 through a coupling. The self-cleaning system ensures that the oil is clean.

[0056] The hydraulic power unit also includes an oil supply pipeline and an oil return pipeline. The oil supply pipeline is equipped with overflow valves, one-way valves, filters, reversing valves, accumulators 8, stop valves, shuttle valves 11, pressure sensors, flow sensors and other components. The return oil pipeline is equipped with overflow valves, filters, one-way valves, sensors, etc. The oil outlet pipe of the overflow valve on the return oil pipeline is connected to the blocked sea discharge interface. After the watertight motor 6 is powered by a cable, the oil pump is driven by a coupling to suck the hydraulic oil from the oil tank 4 into the oil pump for pressurization, and enters the actuator through the one-way valve and the oil supply pipeline. The over-pressure part flows back to the oil tank 4 through the overflow valve, and the return oil in the actuator directly returns to the oil tank 4 through the return oil pipe.

[0057] The manual pluggable electrical connector 3 and the manual pluggable hydraulic connector 9 are both installed on the upper top plate 2. The manual pluggable electrical connector 3 and the manual pluggable hydraulic connector 9 are connected to other underwater working equipment by divers.

[0058] A plurality of stainless steel meshes 15 are installed on the outside of the main frame 1, and the main frame 1 is fixed to the underwater manifold or Christmas tree by mechanical means. The stainless steel meshes 15 can prevent marine organisms from attaching to the components, thereby protecting the components. The above-mentioned device can be assembled on the main frame 1 and sent into the sea by a winch, and the normal temperature is maintained by cooling with the help of seawater.

[0059] Working principle: When in use, the whole system can be sent to the seabed by a winch. A lifting lug 14 is installed on the top of the main frame 1 for lifting, and the bottom is mechanically fixed to the underwater working equipment. The underwater electronic cabin 7 controls and monitors all underwater equipment and is installed on the main frame 1 with a sealed cabin design. Multiple underwater electronic cabins 7 can be configured for redundancy to improve product reliability. The manual plug-in electrical connector 3 is installed on the upper top plate 2 and is connected to the power line of the underwater electronic cabin 7. The directional control valve 13 is fixed to the integrated valve plate 10 by bolts, and the manual plug-in hydraulic connector 9 is installed on the integrated valve plate 10. The integrated valve plate 10 is fixed to the upper top plate 2 by bolts. The manual plug-in hydraulic connector 9 and the manual plug-in electrical connector 3 are connected to other underwater working equipment by divers. The oil tank 4 is installed on the main frame 1 and provides oil for the watertight motor 6 through the oil supply pipeline. Hydraulic oil is supplied, and an oil tank compensator 5 is installed in the oil tank 4. The oil tank compensator 5 can be a bag type or a metal cylinder type, and is connected to the oil tank 4 with the help of a connecting sleeve with a flange to ensure that the pressure in the oil tank 4 is consistent with the seawater pressure. The watertight motor 6 is connected to the oil pump through a coupling, which is divided into a high-pressure system and a low-pressure system. The high and low-pressure systems respectively have two sets of completely identical equipment for redundancy to improve product reliability, and are fixed to the bottom of the main frame 1 by bolts. After the watertight motor 6 is powered by a cable, the oil pump is driven to operate with the help of a coupling, and the hydraulic oil is sucked from the oil tank 4 into the oil pump for pressurization, and enters the actuator through the accumulator 8, the shuttle valve 11, the sensor 12, the directional control valve 13 and the oil supply pipeline. The return oil in the actuator directly returns to the oil tank 4 through the return oil pipe. During recovery, the diver manually removes the mechanical connection between the bottom of the main frame 1 and the underwater working equipment, and the recovery is completed by a winch.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new integrated shallow water underwater control system, characterized by: Will be located in water The hydraulic power unit on the ship is integrated with multiple underwater control modules into an underwater control device, including a frame part, a hydraulic power unit part, an underwater electronic compartment part, an energy storage part, and a valve group part; the hydraulic pipeline in the umbilical cable is eliminated; The frame part comprises an upper top plate (2) and a main frame (1); an electrical connector (3) for manual plugging and unplugging by a diver is installed on one side of the upper end of the upper top plate (2); The hydraulic power unit comprises an oil tank (4), an oil tank compensator (5), a watertight motor (6), and an oil pump, and the oil tank (4), the oil tank compensator (5), the watertight motor (6), and the oil pump are all directly exposed to seawater; The underwater electronic compartment part comprises an underwater electronic compartment (7), the underwater electronic compartment (7) adopts a redundant design, resists seawater pressure through an external shell, contains underwater control and monitoring components inside, and has a plurality of electrical connectors installed on the top of the underwater electronic compartment (7), which are watertightly connected with system-related equipment and a diver's manually plug-in electrical connector (3); The energy storage part comprises a plurality of underwater high-pressure and low-pressure accumulators (8), and the high-pressure and low-pressure accumulators (8) are mechanically fixed to the main frame (1); The valve assembly part comprises an integrated valve plate (10), a manually pluggable hydraulic connector (9), a shuttle valve (11), a sensor (12) and a plurality of directional control valves (13); the integrated valve plate (10) is mechanically mounted on the lower end of the upper top plate (2); and a plurality of diver manually pluggable hydraulic connectors (9) are arranged on the top of the integrated valve plate (10).

2. The novel integrated shallow water underwater control system according to claim 1 is characterized in that: A lifting lug (14) is provided on the top of the main frame (1), and the bottom of the main frame (1) is mechanically fixed to the underwater working equipment.

3. The novel integrated shallow water underwater control system according to claim 1 is characterized in that: A pressure sensor and a liquid level sensor are installed on the oil tank (4), and an oil drain port is provided at the bottom of the oil tank (4).

4. The novel integrated shallow water underwater control system according to claim 1 is characterized by: The oil tank (4) is provided with an oil tank compensator (5). Each of the oil tanks (4) is provided with a plurality of oil tank compensators (5). The oil tank compensators (5) are bag-type or metal cylinder-type and are connected to the oil tank (4) by means of a connecting sleeve with a flange. The oil tank (4) and the oil tank compensators (5) are filled with hydraulic oil.

5. The novel integrated shallow water underwater control system according to claim 1 is characterized by: A self-cleaning system is installed on the top of the oil tank (4), and the self-cleaning system is composed of a watertight motor (6), an oil pump, a filter, a one-way valve, a pressure difference sensor, a pressure sensor, and an overflow valve. The watertight motor (6) is fixed to the bottom of the main frame (1) by bolts, and the oil pump is connected to the watertight motor (6) by a coupling.

6. The novel integrated shallow water underwater control system according to claim 1 is characterized by: The hydraulic power unit part comprises an oil supply pipeline and an oil return pipeline. The oil supply pipeline is equipped with an overflow valve, a one-way valve, a filter, a reversing valve, an accumulator (8), a stop valve, a shuttle valve (11), a pressure sensor, and a flow sensor. The oil return pipeline is equipped with an overflow valve, a filter, a one-way valve, and a sensor. The oil outlet pipe of the overflow valve on the oil return pipeline is connected to the plugging and draining sea interface.

7. The novel integrated shallow water underwater control system according to claim 1 is characterized by: The manually pluggable electrical connector (3) and the manually pluggable hydraulic connector (9) are both mounted on the upper top plate (2).

8. The novel integrated shallow water underwater control system according to claim 1 is characterized by: A plurality of stainless steel meshes (15) are installed on the outside of the main frame (1), and the main frame (1) is fixed to an underwater manifold or a Christmas tree by mechanical means.

9. The novel integrated shallow water underwater control system according to claim 1 is characterized by: The underwater control system is assembled on the main frame (1) and is sent into the sea by a winch, and is cooled by seawater to maintain a normal temperature.

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