Ocean platform seawater tower lifting system
A lifting system and offshore platform technology, applied in the field of lifting systems, can solve problems such as increased current, potential safety hazards of platform lifting, damage to motors, etc., and achieve the effects of preventing motor explosion, reducing accidents, and stabilizing the lifting process.
Active Publication Date: 2017-05-10
JIANGSU HENGLI HYDRAULIC TECH CO LTD
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Problems solved by technology
The motor needs to meet the explosion-proof requirements, but there is still the possibility of explosion; in addition, because of the complex working conditions at sea, the motor may be overloaded during the lifting of the platform. When the motor is overloaded, it will reach electromagnetic saturation, and the motor speed and torque will drop sharply. increase; may damage the motor and pose a safety hazard to the lifting of the platform
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[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0020] see figure 1 , an offshore platform seawater tower lifting system, including at least one motor unit 1 for driving the platform up and down, and a switch valve 2 for controlling the flow of pressure oil, and a switch valve 2 and the motor unit 1 are provided to allow the pressure oil to drive the motor unit The multi-way reversing valve 3 of 1, the pressure oil of the multi-way reversing valve 3 enters the motor unit 1 to drive the motor unit 1 to rotate to drive the platform to rise, fall and stop. The motor ...
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The invention discloses an ocean platform seawater tower lifting system. The ocean platform seawater tower lifting system comprises at least one motor unit used for driving a platform to ascend and descend, and a switch valve used for controlling flowing of pressure oil. A multi-way reversing valve which is used for making the pressure oil drive the motor units is arranged between the switch valve and the motor units. The pressure oil of the multi-way reversing valve enters the motor units and drives the motor units to rotate so that the platform can be driven to ascend, descend and stop.The motor units are connected with brakes used for braking the motor units. The pressure oil of the multi-way reversing valve sequentially passes through a shuttle valve and a high-pressure selector valve so as to start or stop the brakes, and thus braking of the motor units is relieved or the motor units are automatically braked. In this way, by the adoption of the ocean platform seawater tower lifting system, motors can be prevented from exploding, the lifting process is stable, and the accident frequency is limited or reduced through the stroke terminal position.
Description
technical field [0001] The invention relates to the field of lifting systems, in particular to a lifting system for a seawater tower of an ocean platform. Background technique [0002] When the jack-up offshore platform is in normal operation, the main body of the platform is mostly raised about 7 to 10 meters above the sea surface. A dedicated seawater supply system is provided to lift seawater from the sea surface to the platform. The impact and damage of wind, waves and ocean currents under severe weather conditions often cause the water supply pipeline to break. Underwater facilities such as pumps are installed in the seawater pump frame (that is, the platform). When the platform is shifted and towed, the seawater pump frame is retracted from the sea surface to the platform body; when the platform is in place at sea, the platform is lowered from the platform body to the sea surface. [0003] The lifting system of this platform is a rack and pinion hydraulic drive, whi...
Claims
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IPC IPC(8): E02B17/08
CPCE02B17/0809
Inventor 汪立平陈亚军
Owner JIANGSU HENGLI HYDRAULIC TECH CO LTD