Submarine pipeline critical suspended span length monitoring device

Abstract

The utility model discloses a submarine pipeline critical suspended span length monitoring device, which comprises a monitoring box, an overwater receiving device and a fixed support, a monitoring part is arranged in the monitoring box, and the monitoring part comprises a multi-beam scanning sensor module, a data processing and storage module, a wireless communication module, a power supply control module and a time synchronization module. When the monitoring part communicates with the overwater receiving device every time, the time synchronization module performs time synchronization work; each monitoring box is installed below the submarine pipeline through the corresponding fixing support. The suspended span area form below the suspended span submarine pipeline is scanned through the multi-beam scanning and measuring sensor, the suspended span length of the submarine pipeline is monitored regularly and compared with the critical suspended span length of the submarine pipeline, an operator is reminded to conduct suspended span treatment in time, and the risk of fatigue damage to the submarine pipeline is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of marine engineering, in particular to a critical span length monitoring device for a submarine pipeline. Background Art

[0002] Submarine pipelines are the main arteries of offshore oil and gas development, and their safe operation is of vital importance. Monitoring the structural health of submarine pipelines can prevent them from experiencing structural damage. Submarine pipelines are located on the seabed in a complex environment. Affected by the scouring of ocean currents, the mud and sand under the submarine pipelines are hollowed out, resulting in the phenomenon of suspended spans of submarine pipelines. When the length of the suspended span of the submarine pipeline continues to increase, when the frequency of vortex shedding flowing through the pipeline is close to the natural frequency of the pipeline, it will cause severe vortex-induced vibrations at the suspended span of the submarine pipeline, and long-term structural resonance will cause fatigue damage to the submarine pipeline. Utility Model Content

[0003] The purpose of the present application is to provide a critical span length monitoring device for a submarine pipeline to solve the problems raised in the above background technology.

[0004] To achieve the above objectives, this application provides the following technical solutions:

[0005] A critical span length monitoring device for a submarine pipeline comprises one or more monitoring boxes, an above-water receiving device and a fixed bracket. A monitoring unit is arranged in the monitoring box, and the monitoring unit comprises a multi-beam scanning sensor module, a data processing and storage module, a wireless communication module, a power supply control module and a timing module. The multi-beam scanning sensor module collects the form of the span area below the submarine pipeline and the real-time span length signal, and then transmits the collected signal to the data processing and storage module, converts it into span area data and transmits it to the above-water receiving device through the wireless communication module. Each time the monitoring unit communicates with the above-water receiving device, the timing module performs the timing work, and the power supply control module provides power for the multi-beam scanning sensor module, the data processing and storage module, the wireless communication module and the timing module. Each of the monitoring boxes is installed below the submarine pipeline through a corresponding fixed bracket.

[0006] Furthermore, the fixing bracket is in the shape of a cylinder with openings at both ends, the fixing bracket is provided with an axial notch, the fixing bracket is sleeved on the outside of the submarine pipeline, and the monitoring box is provided below the fixing bracket.

[0007] Furthermore, two outwardly extending connecting plates are provided at the notch of the fixing bracket, and the two connecting plates are connected by bolts.

[0008] Furthermore, a buffer gasket is provided between the fixing bracket and the submarine pipeline.

[0009] Furthermore, the multi-beam scanning sensor module includes a transmitting transducer array, a receiving transducer array and a signal converter. The transmitting transducer array is used to transmit a fan-shaped detection beam to the span area below the submarine pipeline. The receiving transducer array receives the reflected detection beam. The detection signal received by the receiving transducer array is an acoustic wave signal. The signal converter converts the acoustic wave signal into an electrical signal, and then transmits the electrical signal to the data processing and storage module.

[0010] Furthermore, the data processing and storage module includes a main controller, an IO interface circuit and a memory. The IO interface circuit receives the electrical signal sent by the signal converter to form scanning data. The scanning data is filtered and processed by the main controller information, and the filtered and processed data is transmitted to the memory data storage to form suspended area data. The memory transmits the suspended area data to the wireless communication module.

[0011] Furthermore, the main controller adopts an STM32F427VIT6 ARM chip.

[0012] Furthermore, the memory adopts an SD memory card.

[0013] Furthermore, the wireless communication module uses an acoustic wave transducer to transmit data to an above-water receiving device in the form of acoustic waves.

[0014] Furthermore, the above-water receiving device is located on a patrol ship or an offshore platform.

[0015] In summary, the technical effects and advantages of the utility model are as follows: the utility model can effectively solve the problem of being unable to judge the length and danger level of the suspended span of the submarine pipeline, use a multi-beam scanning sensor to scan the shape of the suspended span area below the suspended submarine pipeline, regularly monitor the length of the suspended span of the submarine pipeline and compare it with the critical span length of the submarine pipeline, and promptly remind the operating personnel to carry out suspended span management to reduce the risk of fatigue damage to the submarine pipeline; each time the monitoring unit communicates with the water receiving device, the timing module performs the timing work, and the internal timing of the monitoring unit is updated in time through the two timing results to achieve the purpose of accurate data storage. 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 or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic structural diagram of a critical span length monitoring device for a submarine pipeline in one embodiment of the utility model;

[0018] Figure 2 This is a structural schematic diagram of a fixed bracket and a monitoring box in an embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the principle of a critical span length monitoring device for a submarine pipeline in one embodiment of the utility model;

[0020] Figure 4 The schematic diagram of the circuit principle of the critical span length monitoring device for submarine pipelines in one embodiment of the utility model is shown in FIG.

[0021] Among them, 1. Submarine pipeline; 2. Fixed bracket; 3. Buffer gasket; 4. Connecting plate; 5. Monitoring box; 6. Surface receiving device; 7. Seabed; 8. Sea level. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the system or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0026] This embodiment provides a critical span length monitoring device for a submarine pipeline. Figure 1-4 As shown, it includes one or more monitoring boxes 5, an above-water receiving device 6 and a fixed bracket 2. Each monitoring box 5 is respectively encapsulated with a monitoring unit, and the detection box is installed below the fixed bracket 2. This embodiment takes the installation of a monitoring box 5 on a submarine pipeline 1 as an example for specific explanation. For pipelines with a long span length, multiple monitoring boxes 5 can be arranged according to actual conditions, and each monitoring box 5 is installed below the submarine pipeline 1 through a corresponding fixed bracket 2. Specifically, the monitoring unit includes a multi-beam scanning sensor module, a data processing and storage module, a wireless communication module, a power control module and a timing module. The data processing and storage module is respectively connected to the multi-beam scanning sensor module, the wireless communication module and the power control module, and the wireless communication module is respectively connected to the timing module and the above-water receiving device 6. The data processing and storage module serves as the main interaction center to process and store data from the multi-beam scanning sensor module.

[0027] The multi-beam scanning sensor module collects the shape of the span area below the submarine pipeline 1 and the real-time span length signal, and then transmits the collected signal to the data processing and storage module, converts it into span area data and transmits it to the water receiving device 6 through the wireless communication module. Each time the monitoring unit communicates with the water receiving device 6, the timing module performs the timing work, and the power control module provides power for the multi-beam scanning sensor module, the data processing and storage module, the wireless communication module and the timing module.

[0028] Specifically, the fixing bracket 2 is in the shape of a cylinder with two ends open, the fixing bracket 2 is provided with an axial notch, the fixing bracket 2 is sleeved on the outside of the submarine pipeline 1, and the monitoring box 5 is provided below the fixing bracket 2. Optionally, Figure 2 As shown, in this embodiment, the gap is located at Figure 2 At the 9 o'clock direction of the middle fixed bracket 2, the monitoring box 5 is arranged at the 6 o'clock direction of the fixed bracket 2, and two connecting plates 4 extending outward are arranged at the notch of the fixed bracket 2. Bolt holes are arranged on the connecting plates 4. The two connecting plates 4 are connected by bolts, so that the fixed bracket 2 is installed on the outside of the submarine pipeline 1.

[0029] Furthermore, a buffer washer 3 is provided between the fixing bracket 2 and the submarine pipeline 1, and the buffer washer 3 plays a role in buffering and shock absorption and protecting the submarine pipeline 1 from being scratched. Optionally, the outer shells of the fixing bracket 2 and the monitoring box 5 are both made of high-density polyethylene, and the material of the buffer washer 3 is rubber.

[0030] Specifically, the multi-beam scanning sensor module includes a transmitting transducer array, a receiving transducer array and a signal converter, which are connected in sequence through electronic circuits and integrated into the monitoring box 5 through waterproof sealing. The transmitting transducer array is used to transmit a fan-shaped detection beam to the span area below the submarine pipeline 1, and the receiving transducer array receives the reflected detection beam. The detection signal received by the receiving transducer array is an acoustic wave signal. The signal converter converts the acoustic wave signal received by the receiving transducer array into an electrical signal, and then transmits the electrical signal to the data processing and storage module.

[0031] Specifically, the data processing and storage module includes a main controller, an IO interface circuit and a memory. The IO interface circuit is respectively connected to the signal converter and the main controller in communication. The main controller is connected to the memory in communication. The IO interface circuit receives the electrical signal sent by the signal converter to form the scanning data. The scanning data is filtered and processed by the main controller information, and the filtered and processed data is transmitted to the memory for data storage to form the suspended span area data. The memory transmits the suspended span area data to the wireless communication module. The suspended span area data includes the suspended span topographic map and the suspended span length value. Optionally, the main controller adopts the high-performance ARM chip of STM32F427VIT6, which can process the data collected by the multi-beam scanning sensor module with high performance. Optionally, the memory adopts an SD memory card. In addition, the memory is also used to store the status information of each module of the underwater part of the monitoring unit, which is used for the self-inspection of the monitoring unit to ensure the healthy state of the monitoring unit. The SD large-capacity memory card is used for data storage, and the suspended span area data and the monitoring data of the monitoring unit are sent to the wireless communication module.

[0032] Optionally, the wireless communication module realizes wireless communication between the monitoring unit and the above-water receiving device 6. The wireless communication module transmits the spanning area data and the monitoring data of the monitoring unit stored in the data processing and storage module to the above-water receiving device 6 in the form of sound waves. The wireless communication module uses an acoustic wave transducer to transmit data to the above-water receiving device 6 in the form of sound waves.

[0033] Specifically, the timing module is used for the timing function of the monitoring unit communicating with the water receiving device 6. It should be understood that each time the monitoring unit communicates with the water receiving device 6, the timing module performs the timing work, and the internal timing of the monitoring unit is updated in time through the two timing results, so as to achieve the purpose of accurate data storage.

[0034] Specifically, the power control module is connected to the data processing and storage module, and the power control module supplies power to the multi-beam scanning sensor module, the data processing and storage module, the wireless communication module and the timing module according to the signal of the data processing and storage module.

[0035] Furthermore, the above-water receiving device 6 is located on a patrol ship or a nearby offshore platform.

[0036] Specifically, Figure 4 As shown, underwater monitoring uses the high-performance ARM chip of STM32F427VIT6 as the main controller, the power module provides a 5V regulated power supply to provide stable power output for the timing module, sensor module, etc., and uses the AMS1117-3.3 positive low-voltage dropout regulator chip to output the 5V power supply as a 3.3V stable voltage to provide power for the main controller, wireless communication module, and memory. PS1302 is used as the clock chip of the timing module to provide clock timing function for each module. A set of sensors HC-SR04 are used to monitor the data of the suspended span area, and the W25Q128 chip is used as the memory for data reading and storage. The SX1278 wireless communication module is used to transmit data to the water receiving device 6. The connection diagram of each module is as follows Figure 4 shown.

[0037] The working process of this embodiment is as follows: when the monitoring box 5 and the fixed bracket 2 provided with the monitoring unit are installed on the suspended submarine pipeline 1, the multi-beam scanning sensor module starts to work, and the specific shape of the seabed 7 below the suspended submarine pipeline 1 and the real-time suspended span length are scanned. The relevant data after the scanning enters the data processing and storage module, and the multi-beam scanning results are converted into a suspended span topographic map and a suspended span length value. Then the data is transmitted to the water receiving device 6 through the wireless communication module. The water receiving device 6 determines the degree of danger of the suspended submarine pipeline 1 according to the suspended span topographic map and the suspended span length. Once it exceeds the critical suspended span length of the sea pipe, for example, 80%, an alarm can be triggered to remind the operating personnel to carry out the suspended span treatment at that location. In addition, after the suspended span length exceeds the critical suspended span length, for example, 70%, the wireless communication module will feedback to the data processing and storage module to shorten the data storage cycle and increase the frequency of data transmission.

[0038] The fixed bracket 2, monitoring box 5 and monitoring unit are prefabricated on land. During installation, divers operate underwater and use bolts to fix the fixed bracket 2 to the overhang of the submarine pipeline 1 to ensure that the monitoring box 5 is located directly below the submarine pipeline 1. For pipelines with a long overhang, multiple monitoring units can be arranged according to actual conditions. During dismantling, divers can release the device by opening the bolts underwater.

[0039] This embodiment can effectively solve the problem of being unable to determine the length and degree of danger of the suspended span of the submarine pipeline. It can monitor the length of the suspended span submarine pipeline at a relatively low cost, use a multi-beam scanning sensor to scan the morphology of the suspended span area below the suspended span submarine pipeline, regularly monitor the length of the suspended span of the submarine pipeline and compare it with the critical suspended span length of the submarine pipeline, and promptly remind the operating personnel to perform suspended span management to reduce the risk of fatigue damage to the submarine pipeline. The materials of this embodiment are easily available, the manufacturing method is relatively simple, it is easy to install and disassemble, and it will not cause damage to the submarine pipeline.

[0040] Although the preferred implementation cases of the utility model have been described above in conjunction with the accompanying drawings, the utility model is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the utility model, ordinary technicians in this field can also make many forms of specific changes without departing from the scope of protection of the utility model purpose and claims, which all fall within the scope of protection of the utility model.

Claims

1. A critical span length monitoring device for a submarine pipeline, characterized in that: The invention comprises one or more monitoring boxes, an above-water receiving device and a fixed bracket. A monitoring unit is arranged in the monitoring box. The monitoring unit comprises a multi-beam scanning sensor module, a data processing and storage module, a wireless communication module, a power control module and a timing module. The multi-beam scanning sensor module collects the shape of the overhanging area below the submarine pipeline and the real-time overhanging length signal, and then transmits the collected signal to the data processing and storage module, converts it into overhanging area data and transmits it to the above-water receiving device through the wireless communication module. Each time the monitoring unit communicates with the above-water receiving device, the timing module performs the timing work, and the power control module provides power for the multi-beam scanning sensor module, the data processing and storage module, the wireless communication module and the timing module. Each of the monitoring boxes is installed below the submarine pipeline through the corresponding fixed bracket.

2. The critical span length monitoring device for submarine pipelines according to claim 1 is characterized in that: The fixing bracket is in the shape of a cylinder with openings at both ends. The fixing bracket is provided with an axial notch. The fixing bracket is sleeved on the outer side of the submarine pipeline. The monitoring box is provided below the fixing bracket.

3. The critical span length monitoring device for submarine pipelines according to claim 2 is characterized in that: Two outwardly extending connecting plates are arranged at the notch of the fixing bracket, and the two connecting plates are connected by bolts.

4. The critical span length monitoring device for submarine pipelines according to claim 2 or 3, characterized in that: A buffer gasket is provided between the fixing bracket and the submarine pipeline.

5. The critical span length monitoring device for submarine pipelines according to claim 1 is characterized in that: The multi-beam scanning sensor module includes a transmitting transducer array, a receiving transducer array and a signal converter. The transmitting transducer array is used to transmit a fan-shaped detection beam to the span area below the submarine pipeline. The receiving transducer array receives the reflected detection beam. The detection signal received by the receiving transducer array is an acoustic wave signal. The signal converter converts the acoustic wave signal into an electrical signal, and then transmits the electrical signal to the data processing and storage module.

6. The critical span length monitoring device for submarine pipelines according to claim 5 is characterized in that: The data processing and storage module includes a main controller, an IO interface circuit and a memory. The IO interface circuit receives the electrical signal sent by the signal converter to form scanning data. The scanning data is filtered and processed by the main controller information, and the filtered and processed data is transmitted to the memory data storage to form suspended area data. The memory transmits the suspended area data to the wireless communication module.

7. The critical span length monitoring device for submarine pipelines according to claim 6 is characterized in that: The main controller adopts the ARM chip of STM32F427VIT6.

8. The critical span length monitoring device for submarine pipelines according to claim 6 or 7, characterized in that: The memory adopts an SD memory card.

9. The critical span length monitoring device for submarine pipelines according to claim 6, characterized in that: The wireless communication module uses an acoustic wave transducer to transmit data to an above-water receiving device in the form of acoustic waves.

10. The critical span length monitoring device for submarine pipelines according to claim 1, characterized in that: The above-water receiving device is located on a patrol ship or an offshore platform.

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