Seawater lifting device and control method

Abstract

The invention discloses a seawater lifting device and a control method, and belongs to the field of marine machinery. The seawater lifting device comprises a lifting assembly, a hose, a submersible pump and a control unit, one end of the hose communicates with an output port of the submersible pump, the other end of the hose is connected to the lifting assembly, and the control unit is used for driving the lifting assembly to ascend and descend the submersible pump; and the seawater lifting device further comprises a water entry detector, a bottom touch detector, a first connecting arm and a second connecting arm, wherein the water entry detector and the bottom touch detector are electrically connected with the control unit, one end of the first connecting arm is fixed on the submersible pump, the water entry detector is fixedly arranged at the other end of the first connecting arm, one end of the second connecting arm is fixed on the submersible pump, the bottom touch detector is fixedly arranged at the other end of the second connecting arm, when the submersible pump is hoisted on the hose, the water entry detector is located above the submersible pump, and the bottom touch detector is located below the submersible pump. According to the seawater lifting device and the control method, the safety of the seawater lifting device is improved.

Description

Technical field [0001] The invention belongs to the field of marine machinery, and particularly relates to a seawater lifting device and a control method. Background technique [0002] The seawater lifting device is a common marine machinery, which is often configured on the offshore platform to lift the seawater to provide cooling, fire fighting and ballast water for the offshore platform. [0003] Common seawater lifting devices mainly include lifting components, hoses, submersible pumps and control units. One end of the hose is connected to the output port of the submersible pump, the other end of the hose is connected to the lifting component, and the control unit is electrically connected to the lifting component. The control unit is used to drive the lifting assembly to lift the submersible pump. When the submersible pump is lowered from the platform into the sea water, it is usually observed by the operator with naked eyes. When the submersible pump is submerged in the sea ...

AI Technical Summary

Problems solved by technology

[0004] However, when the submersible pump is lowered into the seawater, the operator cannot judge whether the submersible pump submerged in the seawater will bottom out (collide with the seabed)

Moreover, the position of the submersible pump cannot be changed according to the rise and fall of the sea level. There may be a risk that the submersible pump will be exposed to the water surface due to the drop of the sea level, resulting in the risk of the submersible pump burning out.

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