Method, device and system for monitoring the safety state of a ship's flexible pipe

Abstract

This invention provides a method, apparatus, and system for monitoring the safety status of a ship's flexible nozzle. The method includes: acquiring the seawater pump speed and acceleration information at the flexible nozzle under the current ship operating conditions; acquiring the current axial displacement of the flexible nozzle corresponding to the seawater pump speed and acceleration information from a vibration isolation performance database of the flexible nozzle; the vibration isolation performance database stores experimental acceleration information at the flexible nozzle under each candidate seawater pump speed and each candidate axial displacement; and monitoring the safety status of the flexible nozzle based on the current axial displacement. The method, apparatus, and system provided by this invention solve the problem that displacement measurement equipment is difficult to accurately measure axial displacement due to the ship's rolling operation, and improve the real-time accuracy and reliability of monitoring the safety status of flexible nozzles by acquiring accurate axial displacement in real time.

Description

Technical Field

[0001] This invention relates to the field of marine technology, and in particular to a method, apparatus and system for monitoring the safety status of a ship's flexible control system. Background Technology

[0002] The marine cooling system is a key auxiliary system used to draw seawater to cool the ship's power unit. Figure 1 This is a structural diagram of a ship's sea-ventilated cooling system in existing technology, such as... Figure 1 As shown, the ship's sea-venting cooling system mainly includes a seawater pump 14, pipes 16, flexible connectors 13, inlet 11, and outlet 17. Among them, the flexible connector 13 is a key component of the ship's sea-venting cooling system and is often used at the connection between the sea-venting pipes 16 and the hull 10 to achieve axial displacement compensation design.

[0003] However, traditional flexible nozzles can only be designed for axial displacement compensation in marine cooling systems operating under specific conditions. However, due to the rolling and swaying environment of ships, it is difficult to accurately monitor the axial displacement of flexible nozzles in real time using displacement measurement equipment. Therefore, as ship navigation conditions become increasingly complex, flexible nozzles for marine cooling systems are gradually failing to meet the multi-condition operating requirements of ships. Axial displacement compensation often exceeds the maximum compensation specified for operation, leading to cracks or even breaks in the flexible nozzles. This, in turn, deprives the ship's propulsion system of seawater cooling, seriously threatening the safe operation of the ship.

[0004] Therefore, there is an urgent need to design a safety status monitoring method for the flexible nozzles of the Tonghai cooling system that can adapt to multiple operating conditions. Summary of the Invention

[0005] This invention provides a method, device, and system for monitoring the safety status of flexible nozzles on ships, in order to address the shortcomings of existing technologies where flexible nozzles are difficult to adapt to various operating conditions and pose safety hazards.

[0006] This invention provides a method for monitoring the safety status of a ship's flexible control system, comprising:

[0007] Obtain the current seawater pump speed and acceleration information at the flexible connector under the current ship operating conditions;

[0008] The current axial displacement of the flexible nozzle corresponding to the seawater pump speed and acceleration information is obtained from the vibration isolation performance database of the flexible nozzle; the vibration isolation performance database stores experimental acceleration information at the flexible nozzle under each candidate seawater pump speed and each candidate axial displacement.

[0009] Based on the current axial displacement, monitor the safety status of the flexible nozzle.

[0010] According to the present invention, a method for monitoring the safety status of a ship's flexible nozzle includes the following steps for acquiring acceleration information at the flexible nozzle:

[0011] The first and second acceleration values ​​are obtained from the acceleration sensors installed at both ends of the flexible connector under the current ship operating conditions.

[0012] Based on the first acceleration value and the second acceleration value, the acceleration level drop is determined, and the acceleration level drop is used as the acceleration information.

[0013] According to the present invention, a method for monitoring the safety status of a ship's flexible nozzle includes acquiring a first acceleration value and a second acceleration value obtained by acceleration sensors installed at both ends of the flexible nozzle under the current ship operating condition, comprising:

[0014] Obtain the vibration frequency range of the seawater pump under the current ship operating conditions;

[0015] The first acceleration value and the second acceleration value at each frequency within the vibration frequency range are obtained from the acceleration sensor.

[0016] According to the present invention, a method for monitoring the safety status of a ship's flexible nozzle includes obtaining the current axial displacement of the flexible nozzle corresponding to the seawater pump speed and the acceleration information from the vibration isolation performance database of the flexible nozzle, comprising:

[0017] In the vibration isolation performance database, the candidate seawater pump speed that is closest to the seawater pump speed is matched to obtain the target seawater pump speed;

[0018] From the experimental acceleration information at the target seawater pump speed in the vibration isolation performance database, the experimental acceleration information that is closest to the acceleration information is matched to obtain the target acceleration information;

[0019] The candidate axial displacement corresponding to the target seawater pump speed and the target acceleration information is determined from the vibration isolation performance database and used as the current axial displacement.

[0020] According to the present invention, a method for monitoring the safety status of a ship's flexible nozzle, wherein monitoring the safety status of the flexible nozzle based on the current axial displacement includes:

[0021] Based on the current axial displacement and the preset maximum compensation amount of the flexible nozzle, the safety status of the flexible nozzle is determined.

[0022] According to a method for monitoring the safety status of a ship's flexible nozzle provided by the present invention, the method further includes determining the safety status of the flexible nozzle based on the current axial displacement and the preset maximum compensation amount of the flexible nozzle, and then further comprising:

[0023] If the safety status is a safety warning status, a maintenance prompt will be issued;

[0024] If the safety condition is found to be a dangerous operating condition, a seawater valve closure warning will be issued.

[0025] The present invention also provides a device for monitoring the safety status of a ship's flexible overhaul, comprising:

[0026] The acquisition unit is used to acquire the seawater pump speed and acceleration information at the flexible connector under the current ship operating conditions.

[0027] The displacement determination unit is used to obtain the current axial displacement of the flexible nozzle corresponding to the seawater pump speed and the acceleration information from the vibration isolation performance database of the flexible nozzle; the vibration isolation performance database stores experimental acceleration information at the flexible nozzle under each candidate seawater pump speed and each candidate axial displacement.

[0028] The monitoring unit is used to monitor the safety status of the flexible nozzle based on the current axial displacement.

[0029] The present invention also provides a ship flexible control system for monitoring safety status, comprising:

[0030] Flexible take-off;

[0031] Acceleration sensors are installed at both ends of the flexible tube;

[0032] As described above, in the ship flexible manhole safety status monitoring device, the acceleration sensor is connected to the ship flexible manhole safety status monitoring device, and the acceleration sensor is used to collect acceleration information.

[0033] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the ship flexible takeover safety status monitoring method as described above.

[0034] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the ship flexible takeover safety status monitoring method as described above.

[0035] The present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the ship flexible takeover safety status monitoring method as described above.

[0036] The present invention provides a method, apparatus, and system for monitoring the safety status of ship flexible nozzles. It obtains the current axial displacement of the flexible nozzle from the vibration isolation performance database of the flexible nozzle, corresponding to the seawater pump speed and acceleration information under the current ship operating conditions. Based on the current axial displacement, it monitors the safety status of the flexible nozzle, solving the problem that displacement measurement equipment is difficult to accurately measure axial displacement due to the ship's swaying operation. By obtaining accurate axial displacement in real time, it improves the real-time performance and reliability of safety status monitoring of flexible nozzles. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0038] Figure 1 This is a structural schematic diagram of a ship's sea-crossing cooling system in the existing technology;

[0039] Figure 2 This is a flowchart illustrating the ship flexible control system safety status monitoring method provided by the present invention;

[0040] Figure 3 This is a schematic diagram of the structure of a ship's sea-crossing cooling system in a laboratory environment provided by the present invention;

[0041] Figure 4 This is a schematic diagram of the structure of the ship flexible nozzle safety status monitoring device provided by the present invention;

[0042] Figure 5 This is a schematic diagram of the ship flexible control system safety status monitoring system provided by the present invention;

[0043] Figure 6 This is a schematic diagram of the structure of the electronic device provided by the present invention.

[0044] Figure label:

[0045] 10: Hull; 11: Water inlet; 12: Seawater valve; 13: Flexible connector;

[0046] 14: Seawater pump; 15: Power equipment; 16: Pipeline; 17: Water outlet;

[0047] 31: Tension-compression device; 32: Accelerometer sensor;

[0048] 33: Safety status monitoring device for ship flexible overhaul. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0050] Figure 2 This is a flowchart illustrating the ship flexible overhaul safety status monitoring method provided by the present invention, as shown below. Figure 2 As shown, the method includes:

[0051] Step 210: Obtain the seawater pump speed and acceleration information at the flexible connector under the current ship operating conditions.

[0052] Specifically, the current ship operating condition is used to reflect the ship's operating status at the current moment. The ship flexible takeover safety status monitoring method can be triggered and step 210 can be executed when the ship operating condition changes, or step 210 can be executed at preset time intervals. This embodiment of the invention does not specifically limit this.

[0053] The seawater pump speed can be obtained through the seawater pump controller. It is understandable that the seawater pump speed directly affects the amount of axial displacement compensation of the flexible nozzle in the ship's sea-ventilated cooling system, and therefore can be used as a parameter for estimating the axial displacement of the flexible nozzle.

[0054] In addition, the acceleration information at the flexible joint can be obtained by acceleration sensors set at both ends of the flexible joint. It can be understood that the difference between the acceleration values ​​collected at both ends of the flexible joint can effectively reflect the vibration isolation performance of the flexible joint itself. The vibration isolation performance of the flexible joint is also directly related to the axial displacement of the flexible joint. Therefore, the acceleration information can be used as a parameter to estimate the axial displacement of the flexible joint.

[0055] Step 220: Obtain the current axial displacement of the flexible nozzle corresponding to the seawater pump speed and acceleration information from the vibration isolation performance database of the flexible nozzle; the vibration isolation performance database stores experimental acceleration information at the flexible nozzle under each candidate seawater pump speed and each candidate axial displacement.

[0056] Specifically, a ship's sea-ventilation cooling system of the same size and scale as an actual ship's sea-ventilation cooling system can be pre-built in a laboratory environment. For example, Figure 3 This is a schematic diagram of a ship's sea-going cooling system in a laboratory environment, provided by the present invention. Figure 3As shown, considering that the axial displacement of the flexible nozzle is closely related to the vibration isolation performance, in a laboratory environment, the axial displacement of the flexible nozzle 13 can be adjusted by the tension-compression device 31, and the operating conditions of the ship's sea cooling system can be adjusted by controlling different speeds of the seawater pump 14. Furthermore, by using acceleration sensors 32 installed at both ends of the flexible nozzle, the acceleration information that reflects the vibration isolation capability of the flexible nozzle under each set of axial displacement and seawater pump speed can be collected and recorded, thereby forming a vibration isolation performance database of the flexible nozzle 13.

[0057] In this embodiment of the invention, to facilitate the distinction between the actual seawater pump speed and acceleration information under current ship operating conditions and the seawater pump speed and acceleration information controlled under laboratory conditions, the seawater pump speed under laboratory conditions is denoted as the candidate seawater pump speed, the axial displacement under laboratory conditions is denoted as the candidate axial displacement, and the acceleration information measured under laboratory conditions is denoted as the experimental acceleration information. The candidate axial displacement can be adjusted within the range of [-120%s, +120%s], where s refers to the maximum compensation amount specified for flexible nozzle operation.

[0058] Understandably, in the vibration isolation performance database, the candidate seawater pump speed, candidate axial displacement, and experimental acceleration information are stored in groups; that is, a group of candidate seawater pump speeds and candidate axial displacements corresponds to one experimental acceleration information. This can be represented, for example, in the following table:

[0059] Table 1. Schematic diagram of the vibration isolation performance database for flexible hoses.

[0060]

[0061] As shown in Table 1, the structure of the vibration isolation performance database can be an n×m matrix, where n represents n candidate axial displacements and m represents m candidate seawater pump speeds. ΔB′ represents experimental acceleration information, for example, ΔB′ nm For the nth candidate axial displacement L n and the rotational speed V of the m-th candidate seawater pump m The experimental acceleration information obtained from the measurement, ΔB′ nm It can reflect the candidate axial displacement L n and candidate seawater pump speed V m Vibration isolation capability of the flexible conduit.

[0062] After obtaining the seawater pump speed and acceleration information at the flexible nozzle under the current ship operating conditions, the candidate seawater pump speed closest to the seawater pump speed and the experimental acceleration information closest to the acceleration information can be located from the vibration isolation performance database of the flexible nozzle. Thus, the corresponding candidate axial displacement can be located from the vibration isolation performance data. Here, the corresponding candidate axial displacement can be used as the target axial displacement estimated based on the seawater pump speed and acceleration information under the current ship operating conditions.

[0063] It is understood that, in this embodiment of the invention, the target axial displacement under the current ship operating conditions is estimated based on the vibration isolation performance database, which solves the problem that displacement measurement equipment is difficult to accurately measure axial displacement due to the ship's swaying operation.

[0064] Step 230: Based on the current axial displacement, monitor the safety status of the flexible nozzle.

[0065] Specifically, after obtaining the current axial displacement, the safety status of the flexible nozzle can be monitored based on the current axial displacement, thereby realizing dynamic monitoring of the safety status of the flexible nozzle and ensuring the safety of ship operation.

[0066] The method provided in this invention obtains the current axial displacement of the flexible nozzle from the vibration isolation performance database of the flexible nozzle, corresponding to the seawater pump speed and acceleration information under the current ship operating conditions. Based on the current axial displacement, the safety status of the flexible nozzle is monitored, which solves the problem that displacement measurement equipment is difficult to accurately measure axial displacement due to the ship's swaying operation. By obtaining accurate axial displacement in real time, the real-time performance and reliability of safety status monitoring of the flexible nozzle are improved.

[0067] Based on the above embodiments, the steps for obtaining the acceleration information at the flexible connector include:

[0068] The first and second acceleration values ​​are obtained from the acceleration sensors installed at both ends of the flexible connector under the current ship operating conditions.

[0069] Based on the first acceleration value and the second acceleration value, the acceleration level drop is determined, and the acceleration level drop is used as the acceleration information.

[0070] Specifically, acceleration sensors can be installed at both ends of the flexible connector to collect a first acceleration value and a second acceleration value. These first and second acceleration values ​​represent the acceleration at the front end (the end connected to the seawater pump) and the rear end (the end not connected to the seawater pump), respectively. By combining the first and second acceleration values, the acceleration level difference can be calculated and used as acceleration information. This acceleration level difference reflects the vibration isolation capability of the flexible connector.

[0071] Based on any of the above embodiments, obtaining the first acceleration value and the second acceleration value collected by the acceleration sensors installed at both ends of the flexible connector under the current ship operating condition includes:

[0072] Obtain the vibration frequency range of the seawater pump under the current ship operating conditions;

[0073] The first acceleration value and the second acceleration value at each frequency within the vibration frequency range are obtained from the acceleration sensor.

[0074] Here, the vibration frequency range of the seawater pump under the current ship operating conditions can be determined based on the equipment characteristics of the seawater pump, specifically denoted as [f′]. min ,f′ max ], where f′ min f′ max The minimum and maximum values ​​of the vibration frequency range of the seawater pump connected to the flexible nozzle.

[0075] Based on this, the first acceleration value and the second acceleration value collected by the accelerometer at various frequencies within the vibration frequency range can be obtained, denoted here as α. A′ (f) and α B′ (f), α A′ (f) and α B′ (f) are the acceleration amplitudes measured at a certain frequency f by the acceleration sensors at the front end A′ and rear end B′ of the flexible connector, respectively.

[0076] Based on this, the acceleration level difference can be calculated using the following formula:

[0077]

[0078] In the formula, ΔB′ is the calculated acceleration level drop.

[0079] Based on any of the above embodiments, step 120 includes:

[0080] In the vibration isolation performance database, the candidate seawater pump speed that is closest to the seawater pump speed is matched to obtain the target seawater pump speed;

[0081] From the experimental acceleration information at the target seawater pump speed in the vibration isolation performance database, the experimental acceleration information that is closest to the acceleration information is matched to obtain the target acceleration information;

[0082] The candidate axial displacement corresponding to the target seawater pump speed and the target acceleration information is determined from the vibration isolation performance database and used as the current axial displacement.

[0083] Specifically, in the process of determining the current axial displacement from the vibration isolation performance database, the candidate seawater pump speed that is closest to the seawater pump speed in the vibration isolation performance database can be located first. Here, the closest candidate seawater pump speed is recorded as the target seawater pump speed.

[0084] After obtaining the target seawater pump speed, the experimental acceleration information at that speed can be located from the vibration isolation performance database. For example, the column of experimental acceleration information corresponding to the target seawater pump speed can be located from Table 1. Based on this, the experimental acceleration information that is closest to the target acceleration information can be matched from that column and used as the target acceleration information.

[0085] After obtaining the target acceleration information, the candidate axial displacement corresponding to the target seawater pump speed and target acceleration information can be determined from the vibration isolation performance database. For example, in Table 1, the candidate axial displacement corresponding to the row where the target acceleration information is located can be determined as the current axial displacement.

[0086] Based on any of the above embodiments, step 130 includes:

[0087] Based on the current axial displacement and the preset maximum compensation amount of the flexible nozzle, the safety status of the flexible nozzle is determined.

[0088] Specifically, when determining the safety status of the flexible nozzle, the difference between the current axial displacement and the preset maximum compensation can be considered. Here, the preset maximum compensation can be denoted as 's', and the current axial displacement as 'L'. p By comparing the current axial displacement L p The preset maximum compensation amount s of the flexible nozzle can be used to measure the safety status of the flexible nozzle.

[0089] For example, the current axial displacement L p If the current axial displacement L ∈ [-80%s, +80%s], then the flexible nozzle is in a safe operating state; p If the current axial displacement L ∈ [-100%s, -80%s]∪[+80%s, +100%s], then the flexible nozzle is in a safety warning state; pIf ∈[-120%s,-100%s]∪[+100%s,+120%s], then the flexible nozzle is in a dangerous operating state.

[0090] Based on any of the above embodiments, after step 130, the method further includes:

[0091] If the safety status is a safety warning status, a maintenance prompt will be issued;

[0092] If the safety condition is found to be a dangerous operating condition, a seawater valve closure warning will be issued.

[0093] Specifically, when the flexible connector is in a safety warning state, a maintenance reminder needs to be issued to prompt the operator to carry out maintenance and adjustments;

[0094] In the event that the flexible connector is in a dangerous operating condition, a seawater valve closure warning should be issued to prompt the operator to immediately close the seawater valve, thereby effectively ensuring the safe operation of the ship's power system.

[0095] Based on any of the above embodiments Figure 4 This is a schematic diagram of the ship flexible nozzle safety status monitoring device provided by the present invention, as shown below. Figure 4 As shown, the device includes:

[0096] The acquisition unit 410 is used to acquire the seawater pump speed and acceleration information at the flexible connector under the current ship operating conditions.

[0097] The displacement determination unit 420 is used to obtain the current axial displacement of the flexible nozzle corresponding to the seawater pump speed and the acceleration information from the vibration isolation performance database of the flexible nozzle; the vibration isolation performance database stores experimental acceleration information at the flexible nozzle under each candidate seawater pump speed and each candidate axial displacement.

[0098] The monitoring unit 430 is used to monitor the safety status of the flexible nozzle based on the current axial displacement.

[0099] The device provided in this embodiment of the invention obtains the current axial displacement of the flexible nozzle from the vibration isolation performance database of the flexible nozzle, which corresponds to the seawater pump speed and acceleration information under the current ship operating conditions. Based on the current axial displacement, the device monitors the safety status of the flexible nozzle, solving the problem that displacement measuring equipment is difficult to accurately measure axial displacement due to the ship's swaying operation. By obtaining accurate axial displacement in real time, the device improves the real-time performance and reliability of safety status monitoring for the flexible nozzle.

[0100] Based on any of the above embodiments, the acquisition unit is specifically used for:

[0101] The first and second acceleration values ​​are obtained from the acceleration sensors installed at both ends of the flexible connector under the current ship operating conditions.

[0102] Based on the first acceleration value and the second acceleration value, the acceleration level drop is determined, and the acceleration level drop is used as the acceleration information.

[0103] Based on any of the above embodiments, the acquisition unit is specifically used for:

[0104] Obtain the vibration frequency range of the seawater pump under the current ship operating conditions;

[0105] The first acceleration value and the second acceleration value at each frequency within the vibration frequency range are obtained from the acceleration sensor.

[0106] Based on any of the above embodiments, the displacement determination unit is specifically used for:

[0107] In the vibration isolation performance database, the candidate seawater pump speed that is closest to the seawater pump speed is matched to obtain the target seawater pump speed;

[0108] From the experimental acceleration information at the target seawater pump speed in the vibration isolation performance database, the experimental acceleration information that is closest to the acceleration information is matched to obtain the target acceleration information;

[0109] The candidate axial displacement corresponding to the target seawater pump speed and the target acceleration information is determined from the vibration isolation performance database and used as the current axial displacement.

[0110] Based on any of the above embodiments, the monitoring unit is specifically used for:

[0111] Based on the current axial displacement and the preset maximum compensation amount of the flexible nozzle, the safety status of the flexible nozzle is determined.

[0112] Based on any of the above embodiments, the monitoring unit is further configured to:

[0113] If the safety status is a safety warning status, a maintenance prompt will be issued;

[0114] If the safety condition is found to be a dangerous operating condition, a seawater valve closure warning will be issued.

[0115] Based on any of the above embodiments, the present invention also provides a ship flexible takeover safety status monitoring system, comprising:

[0116] Flexible take-off;

[0117] Acceleration sensors are installed at both ends of the flexible tube;

[0118] As described above, in the ship flexible manhole safety status monitoring device, the acceleration sensor is connected to the ship flexible manhole safety status monitoring device, and the acceleration sensor is used to collect acceleration information.

[0119] The system provided in this invention obtains the current axial displacement of the flexible nozzle from the vibration isolation performance database of the flexible nozzle, corresponding to the seawater pump speed and acceleration information under the current ship operating conditions. Based on the current axial displacement, the system monitors the safety status of the flexible nozzle, solving the problem that displacement measurement equipment is difficult to accurately measure axial displacement due to the ship's swaying operation. By obtaining accurate axial displacement in real time, the system improves the real-time performance and reliability of safety status monitoring for the flexible nozzle.

[0120] Based on any of the above embodiments Figure 5 This is a schematic diagram of the ship flexible overhaul safety status monitoring system provided by the present invention, as shown below. Figure 5 As shown, the system includes:

[0121] The hull 10 includes a water inlet 11, a seawater valve 12, a flexible connector 13, a seawater pump 14, a power unit 15, pipelines 16, and a water outlet 17, all located within the hull. Furthermore, to monitor the safety status of the flexible connector 13, an acceleration sensor 32 and a ship flexible connector safety status monitoring device 33 are also installed.

[0122] The ship flexible nozzle safety status monitoring device 33 is connected to the seawater pump 14 and two acceleration sensors 32 to obtain the seawater pump speed and acceleration information at the flexible nozzle under the current ship operating conditions. Combined with the vibration isolation performance database of the flexible nozzle, the device obtains the current axial displacement of the flexible nozzle corresponding to the seawater pump speed and acceleration information, and monitors the safety status of the flexible nozzle based on this.

[0123] Figure 6 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 6As shown, the electronic device may include a processor 610, a communication interface 620, a memory 630, and a communication bus 640, wherein the processor 610, the communication interface 620, and the memory 630 communicate with each other through the communication bus 640. The processor 610 can call logical instructions in the memory 630 to execute a method for monitoring the safety status of a ship's flexible nozzle. This method includes: acquiring the seawater pump speed and acceleration information at the flexible nozzle under the current ship operating conditions; acquiring the current axial displacement of the flexible nozzle corresponding to the seawater pump speed and the acceleration information from the vibration isolation performance database of the flexible nozzle; the vibration isolation performance database stores experimental acceleration information at the flexible nozzle under each candidate seawater pump speed and each candidate axial displacement; and monitoring the safety status of the flexible nozzle based on the current axial displacement.

[0124] Furthermore, the logical instructions in the aforementioned memory 630 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, essentially, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0125] On the other hand, the present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the ship flexible nozzle safety status monitoring method provided by the above methods. The method includes: acquiring the seawater pump speed and acceleration information at the flexible nozzle under the current ship operating conditions; acquiring the current axial displacement of the flexible nozzle corresponding to the seawater pump speed and the acceleration information from the vibration isolation performance database of the flexible nozzle; the vibration isolation performance database stores experimental acceleration information at the flexible nozzle under each candidate seawater pump speed and each candidate axial displacement; and monitoring the safety status of the flexible nozzle based on the current axial displacement.

[0126] In another aspect, the present invention also provides a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the ship flexible nozzle safety status monitoring method provided by the above methods. The method includes: acquiring the seawater pump speed and acceleration information at the flexible nozzle under the current ship operating conditions; acquiring the current axial displacement of the flexible nozzle corresponding to the seawater pump speed and the acceleration information from a vibration isolation performance database of the flexible nozzle; the vibration isolation performance database storing experimental acceleration information at the flexible nozzle under each candidate seawater pump speed and each candidate axial displacement; and monitoring the safety status of the flexible nozzle based on the current axial displacement.

[0127] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0128] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0129] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for monitoring the safety status of a ship's flexible control unit, characterized in that, include: Obtain the current seawater pump speed and acceleration information at the flexible connector under the current ship operating conditions; Obtain the current axial displacement of the flexible nozzle corresponding to the seawater pump speed and acceleration information from the vibration isolation performance database of the flexible nozzle; The vibration isolation performance database stores experimental acceleration information at the flexible nozzle under the rotational speed and axial displacement of each candidate seawater pump. Based on the current axial displacement, monitor the safety status of the flexible nozzle.

2. The method for monitoring the safety status of a ship's flexible control tower according to claim 1, characterized in that, The steps for obtaining the acceleration information at the flexible connector include: The first and second acceleration values ​​are obtained from the acceleration sensors installed at both ends of the flexible connector under the current ship operating conditions. Based on the first acceleration value and the second acceleration value, the acceleration level drop is determined, and the acceleration level drop is used as the acceleration information.

3. The method for monitoring the safety status of a ship's flexible overhaul according to claim 2, characterized in that, The acquisition of the first and second acceleration values ​​obtained by the acceleration sensors installed at both ends of the flexible nozzle under the current ship operating conditions includes: Obtain the vibration frequency range of the seawater pump under the current ship operating conditions; The first acceleration value and the second acceleration value at each frequency within the vibration frequency range are obtained from the acceleration sensor.

4. The method for monitoring the safety status of a ship's flexible control structure according to claim 1, characterized in that, The step of obtaining the current axial displacement of the flexible nozzle corresponding to the seawater pump speed and acceleration information from the vibration isolation performance database of the flexible nozzle includes: In the vibration isolation performance database, the candidate seawater pump speed that is closest to the seawater pump speed is matched to obtain the target seawater pump speed; From the experimental acceleration information at the target seawater pump speed in the vibration isolation performance database, the experimental acceleration information that is closest to the acceleration information is matched to obtain the target acceleration information; The candidate axial displacement corresponding to the target seawater pump speed and the target acceleration information is determined from the vibration isolation performance database and used as the current axial displacement.

5. The method for monitoring the safety status of a ship's flexible take-off and landing system according to any one of claims 1 to 4, characterized in that, The monitoring of the safety status of the flexible nozzle based on the current axial displacement includes: Based on the current axial displacement and the preset maximum compensation amount of the flexible nozzle, the safety status of the flexible nozzle is determined.

6. The method for monitoring the safety status of a ship's flexible control system according to claim 5, characterized in that, The process of determining the safety status of the flexible nozzle based on the current axial displacement and the preset maximum compensation amount of the flexible nozzle further includes: If the safety status is a safety warning status, a maintenance prompt will be issued; If the safety condition is found to be a dangerous operating condition, a seawater valve closure warning will be issued.

7. A device for monitoring the safety status of a ship's flexible control unit, characterized in that, include: The acquisition unit is used to acquire the seawater pump speed and acceleration information at the flexible connector under the current ship operating conditions. The displacement determination unit is used to obtain the current axial displacement of the flexible nozzle corresponding to the seawater pump speed and the acceleration information from the vibration isolation performance database of the flexible nozzle; The vibration isolation performance database stores experimental acceleration information at the flexible nozzle under the rotational speed and axial displacement of each candidate seawater pump. The monitoring unit is used to monitor the safety status of the flexible nozzle based on the current axial displacement.

8. A ship flexible control system for monitoring safety status, characterized in that, include: Flexible take-off; Acceleration sensors are installed at both ends of the flexible tube; The ship flexible manhole safety status monitoring device as described in claim 7, wherein the acceleration sensor is connected to the ship flexible manhole safety status monitoring device, and the acceleration sensor is used to collect acceleration information.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the ship flexible takeover safety status monitoring method as described in any one of claims 1 to 6.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the ship flexible takeover safety status monitoring method as described in any one of claims 1 to 6.

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