Semi-submersible barge liquid level monitoring system

Abstract

The utility model relates to the technical field of ship safety monitoring, and particularly discloses a semi-submersible barge liquid level monitoring system, which is characterized in that on the basis of an original system, a signal isolation module is arranged to divide monitoring data acquired by a monitoring module into two parts, one part is reserved and does not influence the use of the original system, and the other part is transmitted to a newly added module; according to the system and the method, the collected monitoring data can be shared and migrated among different modules, the design breaks through the sealing performance of a traditional matching product on the data, the problem that key monitoring data cannot be exchanged and migrated is solved, the resource utilization rate of the system is improved, and the possibility is provided for multi-path processing of the data; and the stability of the system is further enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to ship safety monitoring technical field, especially relate to a kind of semi-submersible barge liquid level monitoring system. BACKGROUND

[0002] Liquid level monitoring system is the core system of semi-submersible barge, this system can be monitored in the control console of bridge, for real-time monitoring the liquid level and tank capacity of various ballast water tanks, oil tanks etc.

[0003] At present, semi-submersible barge liquid level monitoring system usually relies on existing supporting products, and the relevant monitoring data obtained also needs to be queried and called by relevant supporting products, wherein the key monitoring data of semi-submersible barge cannot be exchanged and migrated, resulting in low overall resource utilization of system, and when relevant supporting products have problems, it is also impossible to recover in time through standby switching, and the overall use risk of system is large. SUMMARY

[0004] In order to overcome the problems of low overall resource utilization and high use risk of the existing semi-submersible barge liquid level monitoring system, the utility model provides a kind of semi-submersible barge liquid level monitoring system.

[0005] In order to achieve the above-mentioned purposes, the utility model provides the following technical solutions:

[0006] A kind of semi-submersible barge liquid level monitoring system, including multiple monitoring modules, first transmission module and first processing module, the multiple monitoring modules are connected in parallel to the first transmission module, and the monitoring data obtained is transmitted to the first processing module by the first transmission module, the system further includes multiple signal isolation modules, multiple data acquisition modules, second transmission module and second processing module;

[0007] Each signal isolation module is connected in the connection of each monitoring module and the first transmission module, and the corresponding data acquisition module is connected in parallel, the signal isolation module is used to shunt transmission of the monitoring data to the first processing module and the data acquisition module;

[0008] Each data acquisition module is connected in parallel by the second transmission module, and at least one data acquisition module is communicated connected to the first transmission module, and the monitoring data obtained is transmitted to the second processing module by the first transmission module;

[0009] The monitoring data includes a ship cabin liquid level, deflection, and ballast pump current, the second processing module is used for obtaining water depth and cabin capacity of the ship cabin according to the ship cabin liquid level, calculating a relative deflection value of the semi-submersible barge according to the deflection, and calculating a start-stop state of the ballast pump according to the ballast pump current.

[0010] According to a specific embodiment, the monitoring module in the semi-submersible barge liquid level monitoring system includes at least four monitoring modules, which are arranged at four corners of the semi-submersible barge respectively; and the monitoring module further includes draft sensors for obtaining draft data of the four corners of the semi-submersible barge.

[0011] According to a specific embodiment, the second processing module in the semi-submersible barge liquid level monitoring system is further used for calculating a longitudinal and transverse inclination angle of the semi-submersible barge according to the draft data of the four corners of the semi-submersible barge.

[0012] According to a specific embodiment, the second processing module in the semi-submersible barge liquid level monitoring system is further used for alarming when the longitudinal and transverse inclination angle is out of limit.

[0013] According to a specific embodiment, the second processing module in the semi-submersible barge liquid level monitoring system is further used for alarming when the water depth and cabin capacity are out of limit, and alarming when the relative deflection value is out of limit.

[0014] According to a specific embodiment, the second processing module in the semi-submersible barge liquid level monitoring system is a PLC NJ300.

[0015] According to a specific embodiment, the second transmission module in the semi-submersible barge liquid level monitoring system includes an optical fiber transmission network.

[0016] Compared with the prior art, the semi-submersible barge liquid level monitoring system has the following beneficial effects:

[0017] The semi-submersible barge liquid level monitoring system provided by the utility model, on the basis of the original system, divides the monitoring data obtained by the monitoring module into two parts through the signal isolation module, keeps one part from affecting the use of the original system, and transmits the other part to the newly added module, so that the collected monitoring data can be shared and migrated between different modules. This design breaks the closedness of data of traditional supporting products, solves the problem that key monitoring data cannot be exchanged and migrated, improves the resource utilization rate of the system, provides the possibility for multi-path processing of data, and further enhances the stability of the system. Meanwhile, the utility model realizes the redundant design of data collection by connecting a plurality of data collection modules to the monitoring module, provides the reliability and fault tolerance of the system, and when the first processing module or the related supporting product has a problem, the system can continue data processing and analysis through the second processing module, realizes the standby switching function, and reduces the use risk of the whole system. Attached Figure Description

[0018] Figure 1 A schematic diagram of a semi-submersible barge level monitoring system provided in this embodiment of the present invention;

[0019] Figure 2 A schematic diagram of another semi-submersible barge level monitoring system provided in this embodiment of the present invention;

[0020] Figure 3 A schematic diagram of the limiting longitudinal and transverse tilt angles provided for embodiments of this utility model. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to experimental examples and specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments. All technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0022] The terms "first," "second," etc., used in the specification, embodiments, claims, and drawings of this utility model are for distinguishing purposes only and should not be construed as indicating or implying relative importance or order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, such as including a series of steps or units. A method, system, product, or apparatus is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or apparatuses.

[0023] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0024] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0025] For details, please refer to Figure 1It shows the structural schematic diagram of the semi-submersible barge liquid level monitoring system, the system comprises a plurality of monitoring modules, a first transmission module and a first processing module, the plurality of monitoring modules are connected in parallel to the first transmission module, and the monitoring data obtained is transmitted to the first processing module through the first transmission module, the system further comprises a plurality of signal isolation modules, a plurality of data acquisition modules, a second transmission module and a second processing module; each signal isolation module is connected in the connection of each monitoring module and the first transmission module, and the corresponding data acquisition module is connected in parallel, the signal isolation module is used for shunt transmission of the monitoring data to the first processing module and the data acquisition module; each data acquisition module is connected in parallel through the second transmission module, at least one data acquisition module is connected with the first transmission module in communication, and the monitoring data obtained is transmitted to the second processing module through the first transmission module.

[0026] Among them, the monitoring data includes cabin liquid level, deflection, ballast pump current, the second processing module is used for obtaining water depth and tank capacity of the cabin according to the cabin liquid level, calculating the relative deflection value of the semi-submersible barge according to the deflection, and calculating the start-stop state of the ballast pump according to the ballast pump current.

[0027] In a possible implementation, the PLC used by the first processing module is Siemens S7-1200 series; the computer is HP, which is configured with Intel(R) Core(TM) i5-10500 CPU@310GHz 310GHz processor, the operating system is windows10 platform, and all of them are foreign software and hardware. The utility model aims at sharing and migration, and replaces the system core components with domestic products, including the data acquisition module using domestic model PLC NJ300 of Otop, which comprises a chip manufactured in China and a domestic brand; the second processing module uses Lenovo Kaitian M630Z, uses megachip 6780A CPU, and uses LINUX Qikong operating system, and the industrial control software in the second processing module uses self-developed software of a domestic manufacturer, and the system is developed by the domestic manufacturer.

[0028] The liquid level monitoring system is completely made in China, adopts the technical idea of "double-track operation", adds a set of key basic national equipment on the basis of the original system, can be used with the original system at the same time, or can be used alone, can ensure normal use function after being "necked", without removing and damaging the existing equipment, completes the localization of the key basic equipment system, and solves the problem of "necking".

[0029] Specifically, the second transmission module adopts a newly laid bottom layer optical fiber data transmission network, and the data acquisition module further comprises an optical fiber transceiver module, an optoelectronic module, a power module and the like. The original system uses a first transmission module to transmit signal data, and the data acquisition module communicates data with the second processing module by using the original first transmission module. When necessary, the second transmission module can additionally increase a switch for data communication between the data acquisition module and the second processing module.

[0030] Specifically, the signal isolation module mainly functions to isolate the output signal of the sensor, avoiding ground potential difference and electromagnetic interference. Common signal isolation modules include: an analog signal isolation module, used in the scene of sensor output analog signal (such as 0-5V, 4-20mA); and a digital signal isolation module, used in the scene of sensor output digital signal. In a possible implementation manner, the signal isolation module of the embodiment adopts a single-channel universal isolator to isolate the three ends of input, output and power supply, and the input current or voltage signal is converted to output an isolated current or voltage signal. The HART signal transmission can be supported, and the isolating working power supply can be provided for the transmitter.

[0031] Specifically, on the basis of the original system, the signal isolation module divides the monitoring data obtained by the monitoring module into two parts, one of which is retained without affecting the use of the original system, and the other of which is transmitted to the newly added module, so that the collected monitoring data can be shared and migrated between different modules. This design breaks the data closure of traditional supporting products, solves the problem of exchange and migration of key monitoring data, improves the resource utilization of the system, provides the possibility for multi-path processing of data, and further enhances the stability of the system. At the same time, by connecting the plurality of data acquisition modules to the monitoring module, the data acquisition redundancy design is realized, the reliability and fault tolerance of the system are provided, when the first processing module or the related supporting product has a problem, the system can continue to process and analyze data through the second processing module, realizing the standby switching function, reducing the overall use risk of the system.

[0032] In addition, the utility model not only monitors the cabin liquid level, but also increases the monitoring of parameters such as deflection and ballast pump current. By comprehensively monitoring these parameters, the state of the semi-submersible barge can be more comprehensively understood, providing more accurate evaluation for the stability and safety of the ship. The water depth and tank capacity can be calculated according to the cabin liquid level, the relative deflection value can be calculated according to the deflection, and the start-stop state can be judged according to the ballast pump current. This intelligent analysis function enables the system to more accurately identify the longitudinal and lateral inclination of the ship and the abnormal situation of the liquid level, and timely issue an alarm, improving the intelligent level and response speed of the system.

[0033] It can be understood that the whole system provided by the embodiment of the utility model adopts modular design, including monitoring module, signal isolation module, data acquisition module and the like, and each module is connected through a transmission module. This design makes the system easy to integrate and expand, and can flexibly increase or replace the module according to actual needs, so as to adapt to different scales and types of semi-submersible barges. Moreover, through the separation of data acquisition and processing and the data sharing mechanism, the system has better compatibility, can be integrated with existing matching products or other monitoring systems, and also provides convenience for future technical upgrading and function expansion.

[0034] Please refer to Figure 2 which shows a structure schematic diagram of another semi-submersible barge liquid level monitoring system provided by the embodiment of the utility model, in a specific implementation manner, the monitoring module comprises at least four, which are respectively arranged on four corners of the semi-submersible barge; the monitoring module further comprises a draft sensor, which is used for acquiring draft data of four corners of the semi-submersible barge.

[0035] Further, the second processing module is further used for calculating the longitudinal and transverse inclination angles of the semi-submersible barge according to the draft data of four corners of the semi-submersible barge, and alarming when the longitudinal and transverse inclination angles are out of limits.

[0036] In a possible implementation manner, the embodiment of the utility model provides a liquid level monitoring algorithm, which can calculate the longitudinal and transverse inclination angles of the semi-submersible barge according to the collected four-corner draft sensor data. Specifically, first, the ship body parameters of the semi-submersible barge are acquired, wherein the default ship length is 138 meters, the ship width is 64 meters, and the draft measurement of four side tanks of the semi-submersible barge adopts a piezoelectric four-corner draft sensor, the model of which is MPM4700, and the output thereof is a 4-20mA current signal. The four-corner draft sensors are respectively installed in No.2B.W.T.(P2), No.2B.W.T.(S2), No.4B.W.T.(P2) and No.4.B.W.T.(S2) four ballast tanks at appropriate positions (as close to the bow and stern positions of the semi-submersible barge as possible),

[0037] The longitudinal and transverse inclination angles as the ship movement indexes are obtained by backstepping from the four-corner draft data, and the calculation formulae of the transverse and longitudinal inclination angles are as follows:

[0038]

[0039] In the formula, Φ is the transverse inclination angle, θ is the longitudinal inclination angle, L is the ship length, B is the ship width, d1 is the left bow draft, d2 is the left stern draft, d3 is the right bow draft, and d4 is the right stern draft. In the formula, the coordinate system is defined as positive at the stern and negative at the bow, positive at the left and negative at the right.

[0040] Specifically, taking the transport of a 3390t caisson from a gravity-type wharf by the semi-submersible barge "Guangzhou" as an example, when the barge was designed and manufactured, the heel angle during submersion and buoyancy should generally not exceed 1°, and the longitudinal heel angle should not exceed 2°; when the semi-submersible barge's draft is above 16-18m or when the loaded components are brought back to the lifting deck above water, the longitudinal heel angle should be ≤1°. The final limit longitudinal and heel angles for the 3390t caisson transported by the semi-submersible barge "Guangzhou" are as follows: Figure 3 As shown.

[0041] Accordingly, according to Figure 3 The results of the extreme longitudinal tilt and transverse tilt angles of the 3390t caisson transported by the semi-submersible barge "Guangzhou" are as follows: When the transverse tilt value is ≥1° or the longitudinal tilt value is ≥1° (the alarm value can be adjusted appropriately according to the actual transported components), a high-level alarm is triggered, the computer displays a flashing yellow light and a buzzer sounds; when the transverse tilt value is ≥2° or the longitudinal tilt value is ≥2° (the alarm value can be adjusted according to the design), a high-high-level alarm is triggered, the computer displays a flashing red light and a buzzer sounds.

[0042] In another possible implementation, the second processing module has the following main functions: supporting the display of the relative positions of each compartment according to the original system's piping MIMIC base map; supporting digital display of compartment liquid level monitoring, compartment volume, and percentage display; digital display of absolute and relative deflection, draft measurement, and automatic calculation and display of trim and pitch; supporting high and low level alarms for each compartment; supporting audible and visual alarms for high relative deflection and high-high relative deflection; supporting audible and visual alarms when trim and pitch values ​​exceed limits; real-time data update interval: 1 second; 8. Number of alarms that can be processed and displayed simultaneously: 150; historical data retention time: 12 months, storage time: 30 days. Specifically, the above parameters can be specifically set in the second processing module. For example, the high level of the compartment can be set to 95%, and the low level can be set to 30%.

[0043] The technical solution provided by this utility model effectively solves the problems of data isolation, low reliability, and insufficient intelligence in existing semi-submersible barge level monitoring systems through modular design, redundancy mechanism, data sharing and intelligent analysis. It significantly improves the reliability, compatibility, intelligence level and resource utilization of the system, and provides strong technical support for the safe operation and efficient management of semi-submersible barges.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A semi-submersible barge liquid level monitoring system, comprising a plurality of monitoring modules, a first transmission module and a first processing module, the plurality of monitoring modules being connected in parallel to the first transmission module and transmitting acquired monitoring data to the first processing module through the first transmission module, characterized in that, The system further comprises a plurality of signal isolation modules, a plurality of data acquisition modules, a second transmission module and a second processing module; Each signal isolation module is connected in parallel with the corresponding data acquisition module, and is used for transmitting the monitoring data to the first processing module and the data acquisition module; Each data acquisition module is connected in parallel through the second transmission module, and at least one data acquisition module is connected with the first transmission module and transmits the acquired monitoring data to the second processing module through the first transmission module; The monitoring data comprises the liquid level in the cabin, the deflection and the current of the ballast pump, the second processing module is used for acquiring the water depth and the capacity of the cabin according to the liquid level in the cabin, calculating the relative deflection value of the semi-submersible barge according to the deflection, and calculating the start-stop state of the ballast pump according to the current of the ballast pump.

2. A semi-submersible barge liquid level monitoring system according to claim 1, wherein, The monitoring module comprises at least four monitoring modules arranged on the four corners of the semi-submersible barge respectively, and further comprises a draft sensor for acquiring the draft data of the four corners of the semi-submersible barge.

3. A semi-submersible barge liquid level monitoring system according to claim 2, wherein, The second processing module is further used for calculating the longitudinal and transverse inclination angles of the semi-submersible barge according to the draft data of the four corners of the semi-submersible barge.

4. A semi-submersible barge liquid level monitoring system according to claim 3, wherein, The second processing module is further used for alarming when the longitudinal and transverse inclination angles exceed the limit.

5. A semi-submersible barge liquid level monitoring system according to claim 1, wherein, The second processing module is further used for alarming when the water depth and the capacity exceed the limit, and alarming when the relative deflection value exceeds the limit.

6. A semi-submersible barge liquid level monitoring system according to claim 1, wherein, The second processing module adopts PLC NJ300.

7. A semi-submersible barge liquid level monitoring system according to claim 1, wherein, The second transmission module comprises an optical fiber transmission network.

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