Floating type super-large-displacement seawater supply device

Abstract

A floating type super-large-displacement seawater supply device comprises a floating box body and a water supply system, the interior of the floating box body is divided into a floating cabin and a water pump cabin through longitudinal and transverse watertight walls, and the water supply system is arranged in the water pump cabin and comprises a sea valve box, a sea valve, a seawater filter and a water pump set. An inlet of each water pump of the water pump set is respectively connected with a seawater filter, a sea valve and a sea valve box which are respectively independent, an outlet of each water pump is connected with a main drainage pipe, a water pump control chamber is arranged above the water pump cabin, a water pump frequency conversion controller is arranged in the water pump control chamber, and a power supply junction box is arranged on the outer wall of the water pump control chamber. The device has the advantages that the structure is reasonable, operation is convenient, continuous, stable and sufficient cooling seawater can be provided for luxury cruise ships, LNG dual-fuel ships and the like in the dry dock from the outside of the dock, normal operation, overhaul and debugging of power and electric power systems and the like of the ships in the dry dock are achieved, the maximum water supply amount of the device is 3600 m < 3 > / h, the maximum water supply pressure is 6.5 Bar, and the water supply requirement can be met.

Description

technical field [0001] The present invention relates to the technical field of supporting facilities for dock repair of large luxury cruise ships and LNG dual-fuel ships (with gas), in particular to a floating super-large-displacement seawater supply device that can float in seawater, which is used to provide continuous , Stable and large-displacement cooling seawater, to realize the normal operation, maintenance and debugging of the ship's power and power system in the dry dock. Background technique [0002] At present, during the maintenance of the known ship in dry dock, in the case of non-water injection in the dock, since the cooling water cannot be obtained, the generator on the ship cannot be turned on, and the main systems will not be able to operate. For ordinary cargo ships, the dock can usually provide low-power shore power and less-displaced cooling water for the use of air-conditioning, refrigeration and lighting systems on board, but for luxury cruise ships or ...

AI Technical Summary

Problems solved by technology

[0002] At present, during the maintenance of ships in dry dock, the generators on the ship cannot be turned on due to the inability to obtain cooling water when the dock is not filled with water, and the main systems will not be able to operate

For ordinary cargo ships, the dock can usually provide low-power shore power and less-displaced cooling water for the use of air-conditioning, refrigeration and lighting systems on board, but for luxury cruise ships or dual-fuel ships carrying LNG, the shore of general docks The supply of electricity and cooling water is far from enough. Even during the docking period of luxury cruise ships, there are still thousands of crew members and service personnel on board. In order to ensure the normal work and life of these people and the luxury cruise ships For the purpose of advertising, all the lights will be on at night, and all the systems on the cruise ship are basically in working condition, which requires a huge power load; and for the membrane type LNG dual fuel ship with gas docking, due to the LNG fuel The tank exchanges heat with the outside world, and part of the liquid fuel will evaporate into gas, which will accumulate in the liquid tank and cause the pressure to rise. In order to control the pressure of the liquid cargo tank within a safe range, the BOG generated by the liquid cargo tank must be treated. Currently, it is feasible The method is to burn it through the GCU on board or consume it as fuel for its dual-fuel generator. No matter which method is used, the shore power or cooling water capacity configured in the general shipyard dock cannot meet the needs of its normal operation. Therefore, it is necessary to The ship’s LNG fuel can only be docked for maintenance after it has been cleaned and inerted. However, if the ship needs emergency docking repairs, the LNG fuel tank cannot be cleaned and inerted in time, and the existing dock facilities will not be able to meet the requirements. its emergency dock repair requirements

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