Motor system for lifting ocean platform and load unbalance monitoring and controlling method of motor system

An offshore platform and motor technology, applied in the field of hydraulic motor system, can solve the problems of poor safety and reliability, unbalanced load, weak controllability, etc., and achieve the effect of improving safety, precise control and strong controllability

Active Publication Date: 2013-03-20
WUHAN MARINE MACHINERY PLANT
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AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects and problems of poor safety and reliability and weak controllability in the prior art, and provide a motor system for lifting and lowering offshore platforms with better safety, reliability and stronger controllability. The monitoring and control method of its unbalanced load

Method used

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  • Motor system for lifting ocean platform and load unbalance monitoring and controlling method of motor system

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Embodiment 1

[0040] The motor system for lifting the offshore platform includes multiple hydraulic motor units, and each hydraulic motor unit includes a motor 3, a brake 1, a gearbox 2, an oil inlet pressure relay 4, an oil outlet pressure relay 5, and a No. 1 balance valve 6 , No. 2 balance valve 7, shuttle valve 8, solenoid valve 9, No. 1 safety valve 10 and No. 2 safety valve 11;

[0041] The motor 3 includes a motor oil inlet 31, a motor oil outlet 32, a motor oil return port 33 and a motor output 34; the motor output 34 is connected to one end of the gear box 2 through the brake 1, and the gear box 2 The other end is connected with the pile legs set on the offshore platform; the motor oil inlet 31 is connected to the oil inlet pump station 13 after passing through the No. 1 balance valve oil inlet 61, the No. 1 balance valve oil outlet 62, and the hose 17. connected, and an oil inlet pressure relay 4 is provided on the oil inlet passage 12 between the motor oil inlet 31 and the No. 1 ...

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Abstract

The invention relates to a motor system for lifting an ocean platform and a load unbalance monitoring and controlling method of the motor system. According to the motor system, an oil inlet pressure relay and an oil outlet pressure relay are respectively arranged at an oil inlet and an oil outlet of each motor and are used for monitoring the pressure of the oil inlet and the pressure of the oil outlet of each motor in real time and comparing the pressure of the oil inlet and the pressure of the oil outlet with a set pressure, if the pressure of the oil inlet and the pressure of the oil outlet are higher than the set pressure, the oil inlet pressure relay and the oil outlet pressure relay sent signals to a PLC (Programmable Logical Controller) control system and the PLC control system judges whether the motor is at a load unbalance state according to the time duration, and if the motor is at the load unbalance state, the PLC control system gives an alarm and is powered off, so that the load unbalance of the motor is monitored and controlled in real time, and therefore, the operation safety and reliability of the lifting system of the ocean platform are enhanced. The motor system disclosed by the invention is better in safety and reliability and strong in controllability.

Description

technical field [0001] The invention relates to a hydraulic motor system for lifting and lowering an ocean platform, in particular to a motor system for lifting and lowering an ocean platform and a monitoring and control method for load imbalance thereof, which is particularly suitable for enhancing the safety and reliability of the motor system. This technology is a patented technology of the project funded by the National High-tech Research and Development Program (863 Program). Background technique [0002] At present, the lifting of the offshore platform depends on the operation of the hydraulic motor, that is, the hydraulic motor drives the gear to move along the fixed rack set on the leg, so as to realize the lifting of the offshore platform. During the lifting process of the platform, the hydraulic motors need to be synchronized, and all the motors involved in the drive are required to share the load of the platform system evenly. When the motor load is unbalanced, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B17/08F15B21/08
Inventor 朱真利马志刚周建良徐潇慕希庆温新民赵丽雄
Owner WUHAN MARINE MACHINERY PLANT
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