Wireless power supply and communication device and underwater blowout preventer control system

Abstract

The invention discloses a wireless power supply and communication device and an underwater blowout preventer control system. The device comprises an upper end part and a lower end part, the upper end part comprises a power supply module, a wireless power supply transmitting module and an upper end wireless network bridge; the lower end part comprises a wireless power supply receiving module and a lower end wireless network bridge; the power supply module provides direct-current power supply for the wireless power supply transmitting module and the upper-end wireless network bridge; the wireless power supply transmitting module generates an alternating electromagnetic field through an internal coil and transmits the alternating electromagnetic field to the wireless power supply receiving module; the upper-end wireless network bridge and the lower-end wireless network bridge establish a communication bridge by transmitting and receiving wireless electromagnetic wave signals with each other; and the wireless power supply receiving module receives the electromagnetic field of the wireless power supply transmitting module, converts the electromagnetic field into alternating induction current and supplies the alternating induction current to the electric equipment and the lower end wireless network bridge. Underwater wireless power supply is carried out in a wireless power transmission mode, the problems that an existing battery is aged and high in replacement cost are solved, and the underwater wireless power supply device has the advantages of being low in cost, convenient to install and small in size.

Description

Technical Field

[0001] The present invention relates to the technical field of deepwater oil and gas resource exploration and development, and in particular to a wireless power supply and communication device and an underwater blowout preventer control system. Background Art

[0002] In the exploration and development of deepwater oil and gas resources, deepwater drilling blowout preventer groups and control systems are key equipment. Their main function is to control the wellhead pressure when blowouts and well surges occur, and to close the wellhead in time in dangerous situations such as typhoons to ensure the safety of personnel and equipment, avoid damaging oil and gas resources and polluting the marine environment. In today's deepwater drilling blowout preventer groups and control system applications, the power supply and communication between the lower riser assembly and the blowout preventer group usually adopts the wet plug-in connector docking method. This physical plug-in form of power supply and communication has the following disadvantages: the plug and socket of the wet plug-in connector are matched with the pin and the hole, and there are problems such as low plug-in service life in the underwater environment, high docking accuracy requirements for the docking device between the lower riser assembly and the blowout preventer group, and complex positioning and guidance systems. Once the wet plug-in connector fails to dock, it will cause power supply and communication failures, affecting the safety of the underwater blowout preventer system operation. In addition, the wet plug-in connector has a low plug-in life in the underwater environment and needs to be replaced regularly, which increases the operating cost.

[0003] Therefore, how to apply a power supply and communication device with good economy, high safety and reliability, small footprint and easy maintenance in the existing deepwater drilling blowout preventer group and control system has become an urgent problem to be solved in the field of deepwater oil and gas resource exploration and development. Summary of the invention

[0004] In view of the above problems, the present invention is proposed to provide a wireless power supply and communication device and an underwater blowout preventer control system that overcome the problems of short service life, low safety and high replacement cost caused by the above-mentioned plug-in and unplug method in the underwater environment.

[0005] According to one aspect of the present invention, a wireless power supply and communication device is provided, comprising: an upper portion and a lower portion; the upper portion comprises: a power supply module, a wireless power supply transmitting module and an upper wireless bridge; the lower portion comprises: a wireless power supply receiving module and a lower wireless bridge;

[0006] Wherein, the power supply module is used to provide DC power supply for the wireless power transmission module and the upper wireless bridge;

[0007] The wireless power transmission module is used to generate an alternating electromagnetic field through an internal coil and transmit it to the wireless power reception module;

[0008] The upper wireless bridge and the lower wireless bridge establish a communication bridge by transmitting and receiving radio electromagnetic wave signals from each other;

[0009] The wireless power supply receiving module is used to receive the electromagnetic field of the wireless power supply transmitting module, and convert the electromagnetic field into a corresponding alternating induction current and supply it to the power-consuming device and the lower wireless bridge.

[0010] In an optional manner, the power supply module includes: a DC power supply circuit;

[0011] The wireless power transmission module includes: a wireless power transmission end main control chip, a transmitting coil, an inverter circuit and a resonant circuit;

[0012] The wireless power supply receiving module includes: a receiving coil, a rectifying and filtering circuit and a voltage stabilizing circuit.

[0013] In an optional manner, the DC power supply circuit provides DC power of corresponding voltage to the wireless power supply transmitter main control chip and the inverter circuit;

[0014] The wireless power supply transmitter main control chip is used to control the on and off of the MOS tube in the inverter circuit with a pulse width modulation signal with a preset duty cycle to generate an alternating signal;

[0015] The resonant circuit is used to enhance the stability of the alternating signal;

[0016] The transmitting coil is used to generate an alternating electromagnetic field based on the alternating signal and transmit the alternating electromagnetic field to the receiving coil.

[0017] In an optional manner, the receiving coil is used to convert the received alternating electromagnetic field into an alternating current;

[0018] The rectification and filtering circuit is used to rectify and filter the alternating current;

[0019] The voltage stabilizing circuit is used to stabilize the alternating current and output electric energy to the electric device and the lower wireless bridge.

[0020] In an optional manner, the inverter circuit adopts an H-bridge inverter circuit and is provided with four MOS tubes;

[0021] The resonant circuit adopts an RC resonant circuit.

[0022] In an optional manner, the electrical device includes a temperature sensor and a pressure sensor.

[0023] In an optional manner, the wireless electromagnetic wave signal uses a 2.4G frequency band.

[0024] According to another aspect of the present invention, there is provided a subsea blowout preventer control system, comprising: a wireless power supply and communication device, a lower riser assembly, and a subsea blowout preventer group;

[0025] Wherein, the lower riser assembly is arranged above the underwater blowout preventer group and connected to each other;

[0026] The upper end portion of the wireless power supply and communication device is disposed below the lower riser assembly and connected to each other;

[0027] The lower end portion of the wireless power supply and communication device is arranged above the underwater blowout preventer group and is connected to each other.

[0028] In an optional manner, the upper portion and the lower portion of the wireless power supply and communication device are in contact with each other.

[0029] In an optional manner, the upper wireless bridge is used to: receive a communication message sent by a main controller module in the lower riser assembly, and transmit the communication message to each sensor of the underwater blowout preventer group through a communication bridge between the upper wireless bridge and the lower wireless bridge;

[0030] The lower wireless bridge is used to receive communication messages returned by the sensors of the underwater blowout preventer group, and transmit the communication messages back to the main controller module in the lower riser assembly through the communication bridge between the lower wireless bridge and the upper wireless bridge.

[0031] According to the solution provided by the present invention, wireless power transmission is used for wireless power supply instead of the existing underwater wireless charging technology, so there is no need to consider the problems of battery aging caused by battery energy storage and high cost caused by battery replacement. Wireless communication and wireless power supply can be realized at a depth of 3,000 meters. Compared with the existing wet plug connector, it has the advantages of low cost, convenient installation and layout, small size, etc., and there is no need to consider the communication failure caused by wiring and wire damage and the safety problems caused by leakage. Based on the fact that the existing underwater wireless communication and wireless power transmission technology are easily affected by factors such as distance and obstacles in the quality of communication and power transmission, a modular integrated layout method is adopted, and the upper part and the lower part are fitted together, so there is no need to consider the problems caused by distance and obstacles that affect the quality of communication and wireless charging. At the same time, it has the effects of strong pressure bearing capacity, high durability, high power supply efficiency, and good overall sealing.

[0032] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0034] Figure 1 A schematic diagram of a wireless power supply and communication device according to an embodiment of the present invention is shown;

[0035] Figure 2 A schematic diagram of a wireless power supply circuit system according to an embodiment of the present invention is shown;

[0036] Figure 3 A schematic diagram of a wireless communication process according to an embodiment of the present invention is shown;

[0037] Figure 4 A schematic diagram of a subsea blowout preventer control system according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0038] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to enable the scope of the present invention to be fully communicated to those skilled in the art.

[0039] Figure 1 FIG. 1 is a schematic diagram of a wireless power supply and communication device according to an embodiment of the present invention. Figure 1 As shown, including:

[0040] The upper part 101 and the lower part 102. The upper part 101 includes: a power module 103, a wireless power transmission module 104 and an upper wireless bridge 105. The lower part 102 includes: a wireless power receiving module 106 and a lower wireless bridge 107. The wireless power supply method of the wireless power supply and communication device adopts the principle of electromagnetic induction, that is, the current passes through the coil to generate an electromagnetic field, which generates an induced electromotive force to the nearby coil to generate an induced current.

[0041] Among them, the power module 103 (powered by the upper lower watertight pipe assembly) is used to provide DC power for the wireless power transmission module 104 and the upper wireless bridge 105.

[0042] The wireless power transmission module 104 is used to generate a corresponding alternating electromagnetic field (electromagnetic energy) through an internal coil and transmit it to the wireless power reception module 106 .

[0043] The upper wireless bridge 105 and the lower wireless bridge 107 establish a communication bridge by transmitting and receiving radio electromagnetic wave signals through their respective antennas. The controller device of the lower riser assembly communicates with the electrical equipment in the blowout preventer group through the wireless communication medium. For underwater working conditions, the radio electromagnetic wave signal adopts the 2.4G frequency band, which has the advantages of good penetration and low cost.

[0044] The wireless power receiving module 106 is used to receive the electromagnetic field of the wireless power transmitting module 104, and convert the electromagnetic field into a corresponding alternating induced current and supply it to the power-consuming equipment (including temperature sensors and pressure sensors, etc.) and the lower wireless bridge 107. Thus, the electric energy is wirelessly transmitted from the lower riser assembly to the underwater blowout preventer group.

[0045] In an optional manner, the wireless power supply and communication device includes a corresponding power supply circuit system, such as Figure 2 As shown, the power supply circuit system includes a DC power supply circuit 201, a wireless power supply transmitter main control chip 202, an inverter circuit 203, a resonant circuit 204, a transmitting coil 205, a receiving coil 206, a rectifier and filter circuit 207, a voltage stabilizing circuit 208 and a load circuit 209.

[0046] The power module 103 in the wireless power supply and communication device includes a DC power supply circuit 201. The wireless power supply transmitting module 104 includes: a wireless power supply transmitting end main control chip 202, a transmitting coil 205, an inverter circuit 203 and a resonant circuit 204. The wireless power supply receiving module 106 includes: a receiving coil 206, a rectifier filter circuit 207 and a voltage stabilizing circuit 208.

[0047] The DC power supply circuit 201 provides DC power of corresponding voltage to the wireless power supply transmitter main control chip 202 and the inverter circuit 203. The wireless power supply transmitter main control chip 202 is used to control the on and off of the MOS tube in the inverter circuit 203 with a pulse width modulation signal (PWM) with a preset duty cycle to generate an alternating (AC) signal. The resonant circuit 204 is used to enhance the stability of the alternating signal. The transmitting coil 205 is used to generate an alternating electromagnetic field based on the alternating signal and transmit it to the receiving coil 206.

[0048] The receiving coil 206 is used to convert the received alternating electromagnetic field into an alternating current; the rectifying and filtering circuit 207 is used to rectify and filter the alternating current; the voltage stabilizing circuit 208 is used to stabilize the alternating current and output electric energy to the electrical equipment and the lower wireless bridge.

[0049] In this embodiment, the received electromagnetic field is converted into alternating current by the receiving coil 206, and after rectification, filtering and voltage stabilization operations by the rectifying and filtering circuit 207 and the voltage stabilizing circuit 208, a stable direct current output is provided for the load circuit 209 in the electrical equipment.

[0050] In an optional manner, the inverter circuit 203 adopts an H-bridge inverter circuit with four MOS tubes, which is beneficial to the overall power supply efficiency. The resonant circuit 204 adopts an RC resonant circuit, which can achieve stable oscillation signal quality, strong adaptability, simple structure and low power consumption.

[0051] Figure 3 A schematic diagram of a wireless communication process according to an embodiment of the present invention is shown. Figure 3 As shown, the antennas of the upper wireless bridge 302 and the lower wireless bridge 303 establish a communication bridge by transmitting and receiving radio electromagnetic wave signals to each other. The main controller module 301 in the lower watertight pipe assembly sends a communication message to the upper wireless bridge 302, which is transmitted to each sensor 304 of the blowout preventer through the communication bridge between the upper wireless bridge 302 and the lower wireless bridge 303. Each sensor 304 of the blowout preventer returns a corresponding communication message, which is transmitted back to the main controller module 301 through the communication bridge built by the two bridges, thereby realizing wireless communication between the underwater blowout preventer group and its lower watertight pipe assembly.

[0052] The solution provided by the above embodiment of the present invention adopts electromagnetic induction for wireless power supply instead of the existing underwater wireless charging technology. There is no need to consider the problems of battery aging and high cost of battery replacement caused by the battery energy storage method, and the power supply efficiency and reliability are high. Compared with the existing wet plug connector, the plug and socket of the wet plug electrical connector are avoided to avoid the safety hazard of power supply and communication failure caused by docking damage in deep water environment, thereby improving the safety of the underwater blowout preventer system.

[0053] Figure 4 FIG. 2 shows a schematic diagram of a control system for an underwater blowout preventer according to an embodiment of the present invention. Specifically, Figure 4 As shown, the underwater blowout preventer control system includes: a wireless power supply and communication device, a lower riser assembly 401 and an underwater blowout preventer group 404.

[0054] The lower riser assembly 401 is disposed above the underwater blowout preventer group 404 and connected to each other. The upper end portion 402 of the wireless power supply and communication device is disposed below the lower riser assembly 401 and connected to each other;

[0055] The lower end portion 403 of the wireless power supply and communication device is disposed above the underwater blowout preventer group 404 and is connected to each other.

[0056] In an optional manner, the upper portion and the lower portion of the wireless power supply and communication device are in contact with each other.

[0057] In this embodiment, Figure 4 As shown, the upper part 402 and the lower part 403 of the wireless power supply and communication device fit each other. The two internal induction coils of the upper part 402 and the lower part 403 have met the minimum electromagnetic induction distance to avoid overvoltage damage. The arrangement of the coils on both sides at relatively fixed positions avoids the problem of unsatisfactory power supply caused by the large induction distance of the coils on both sides of the wireless power supply, and there is not much physical blocking of the signal between the two bridges, so there is no need to consider the impact caused by insufficient signal penetration.

[0058] In an optional manner, the upper wireless bridge is used to: receive a communication message sent by a main controller module in the lower riser assembly, and transmit the communication message to each sensor of the underwater blowout preventer group through a communication bridge between the upper wireless bridge and the lower wireless bridge;

[0059] The lower wireless bridge is used to receive communication messages returned by the sensors of the underwater blowout preventer group, and transmit the communication messages back to the main controller module in the lower riser assembly through the communication bridge between the lower wireless bridge and the upper wireless bridge.

[0060] In the solution provided by the above-mentioned embodiment of the present invention, the upper and lower parts of the wireless power supply and communication device fit together, thereby avoiding the problem of unsatisfactory power supply caused by the large induction distance of the coils on both sides of the wireless power supply, and there is no need to consider the factor of insufficient signal penetration between the two bridges, thereby ensuring the quality of wireless power supply and the stability of wireless communication. Due to the use of a modular design approach, the degree of integration of the system is improved. The overall device occupies a small volume, has good sealing effect, good insulation performance, long service life, no mechanical wear and other problems, and has a relatively simple structure, low cost, good economy, and is easy to install and maintain. In addition, the overall device has strong pressure bearing capacity and high durability, and can be used in an underwater environment of 3,000 meters deep.

[0061] It should be noted that, in the present invention, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not represent any actual relationship or order between the entities or operations.

[0062] The illustrations provided by the present invention are only used to schematically illustrate the basic concept of the present invention. The illustrations only show the components related to the present invention rather than being drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0063] The "connection" in the present invention includes both direct connection and indirect connection, such as connection through some active devices, passive devices or electrically conductive media; it may also include connection through other active devices or passive devices on the basis of achieving the same or similar functional purposes as is well known to those skilled in the art, such as connection through circuits or components such as switches and follower circuits.

[0064] The description and application of the present invention here are illustrative, and it is not intended to limit the scope of the present invention to the above-mentioned embodiments. The effects or advantages involved in the embodiments may not be embodied in the embodiments due to interference from various factors, and the description of the effects or advantages is not used to limit the embodiments. The deformation and change of the embodiments disclosed here are possible, and the replacement of the embodiments and the various equivalent parts are well known to those of ordinary skill in the art. It should be clear to those skilled in the art that the present invention can be implemented in other forms, structures, arrangements, proportions, and with other components, materials and parts without departing from the spirit or essential features of the present invention. Other deformations and changes can be made to the embodiments disclosed here without departing from the scope and spirit of the present invention.

Claims

1. A wireless power supply and communication device for an underwater blowout preventer control system, characterized in that: The device comprises: an upper part and a lower part; the upper part comprises: a power module, a wireless power transmission module and an upper wireless bridge; the lower part comprises: a wireless power receiving module and a lower wireless bridge; Wherein, the power supply module is used to provide DC power supply for the wireless power transmission module and the upper wireless bridge; The wireless power transmission module is used to generate an alternating electromagnetic field through an internal coil and transmit it to the wireless power reception module; The upper wireless bridge and the lower wireless bridge establish a communication bridge by transmitting and receiving radio electromagnetic wave signals from each other; The wireless power supply receiving module is used to receive the electromagnetic field of the wireless power supply transmitting module, and convert the electromagnetic field into a corresponding alternating induction current and supply it to the power-consuming device and the lower wireless bridge.

2. The wireless power supply and communication device according to claim 1, characterized in that: The power supply module includes: a DC power supply circuit; The wireless power transmission module includes: a wireless power transmission end main control chip, a transmitting coil, an inverter circuit and a resonant circuit; The wireless power supply receiving module includes: a receiving coil, a rectifying and filtering circuit and a voltage stabilizing circuit.

3. The wireless power supply and communication device according to claim 2, characterized in that: The DC power supply circuit provides DC power of corresponding voltage to the wireless power supply transmitter main control chip and the inverter circuit; The wireless power supply transmitter main control chip is used to control the on and off of the MOS tube in the inverter circuit with a pulse width modulation signal with a preset duty cycle to generate an alternating signal; The resonant circuit is used to enhance the stability of the alternating signal; The transmitting coil is used to generate an alternating electromagnetic field based on the alternating signal and transmit the alternating electromagnetic field to the receiving coil.

4. The wireless power supply and communication device according to claim 2 or 3, characterized in that: The receiving coil is used to convert the received alternating electromagnetic field into an alternating current; The rectification and filtering circuit is used to rectify and filter the alternating current; The voltage stabilizing circuit is used to stabilize the alternating current and output electric energy to the electric device and the lower wireless bridge.

5. The wireless power supply and communication device according to claim 2, characterized in that: The inverter circuit adopts an H-bridge inverter circuit and is provided with four MOS tubes; The resonant circuit adopts an RC resonant circuit.

6. The wireless power supply and communication device according to claim 1, characterized in that: The electrical equipment includes a temperature sensor and a pressure sensor.

7. The wireless power supply and communication device according to claim 1, characterized in that: The wireless electromagnetic wave signal adopts the 2.4G frequency band.

8. An underwater blowout preventer control system, characterized in that: The wireless power supply and communication device according to any one of claims 1 to 7, further comprising: a lower riser assembly and an underwater blowout preventer group; Wherein, the lower riser assembly is arranged above the underwater blowout preventer group and connected to each other; The upper end portion of the wireless power supply and communication device is disposed below the lower riser assembly and connected to each other; The lower end portion of the wireless power supply and communication device is arranged above the underwater blowout preventer group and is connected to each other.

9. The underwater blowout preventer control system according to claim 8, characterized in that: The upper end portion and the lower end portion of the wireless power supply and communication device are attached to each other.

10. The underwater blowout preventer control system according to claim 8, characterized in that: The upper wireless bridge is used to: receive the communication message sent by the main controller module in the lower riser assembly, and transmit the communication message to each sensor of the underwater blowout preventer group through the communication bridge between the upper wireless bridge and the lower wireless bridge; The lower wireless bridge is used to receive communication messages returned by the sensors of the underwater blowout preventer group, and transmit the communication messages back to the main controller module in the lower riser assembly through the communication bridge between the lower wireless bridge and the upper wireless bridge.

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