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Ship structure state long-term monitoring system

A technology for structural status and monitoring system, applied in the direction of ships, etc., can solve the problems of the decrease of hull strength, etc., and achieve the effects of simple structure, accurate measurement and convenient installation.

Pending Publication Date: 2022-04-12
HARBIN ENG UNIV
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  • Claims
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Problems solved by technology

[0006] 4) For many ships that have been in service for a period of time, due to factors such as structural fatigue and corrosion, the strength of the hull will decrease. It is necessary to monitor the structural load of the hull in real time and evaluate the remaining strength of the structure

Method used

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  • Ship structure state long-term monitoring system
  • Ship structure state long-term monitoring system

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Embodiment 1

[0038] combine figure 1, the hull structure state monitoring system includes a hull general longitudinal stress test unit, a hull vibration test unit, a hull motion test unit and a hull local stress test unit installed on a specific section, a data acquisition unit and an exchange unit installed on the driving deck, a power supply unit, Dangerous state alarm unit, main control center, data storage unit and monitoring control unit. The overall longitudinal stress test unit of the hull is composed of long baseline strain gauges installed on a specific section, which are used to measure the deformation of the hull structure in real time and digitize the test data. The main component of the hull vibration test unit is to install the vibration sensor on the bow, monitor the acceleration of the bow, and test the vibration data of the hull. The main component of the hull motion test unit is the attitude sensor installed at the center of gravity of the hull, which is used to test the...

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Abstract

The invention belongs to the technical field of ship safety monitoring, and particularly relates to a ship structure state long-term monitoring system. The ship body total longitudinal stress testing unit measures the deformation amount of the ship body structure in real time; the ship body vibration test unit monitors the ship bow acceleration and tests ship body vibration data; testing the overall rolling and pitching angle data of the ship body through a ship body motion testing unit; monitoring stress-strain information of a dangerous position of the ship body in real time through a ship body local stress testing unit; the total longitudinal bending moment, the transverse bending moment, the double torque and the size and direction of the torque acting on the cross section of each needed shipping space of the ship body structure are obtained through calculation of the main control center and compared with preset threshold values, and if the ship body is in a dangerous stress state, early warning is conducted through the alarm unit. The device has the advantages of being simple in structure, convenient to install, accurate in measurement, free of temperature drift and the like, and is suitable for monitoring structural deformation and stress states of the container ship in the loading, unloading and shipping processes for a long time.

Description

technical field [0001] The invention belongs to the technical field of ship safety monitoring, and in particular relates to a long-term monitoring system for the structural state of a ship. Background technique [0002] At present, in order to ensure the safety of the ship's structure and navigation, the domestic and foreign shipping circles have the following requirements for the safety monitoring of the hull structure: [0003] 1) There may be inhomogeneity when the ship is loaded or unloaded, which will cause the hull structure to be in a dangerous state, and it is necessary to monitor the structural load during loading or unloading. [0004] 2) When the ship sails in waves, it is necessary to monitor the wave load experienced by the hull girder in real time. [0005] 3) For many ships that have expired in service, if the remaining fatigue life is evaluated based on the actual ship load data to determine the ship life extension plan, it needs the support of long-term sto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B79/10B63B79/30B63B79/40
Inventor 谢耀国曲先强崔洪斌杨文辰张猛
Owner HARBIN ENG UNIV
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