An anti-cavitation device suitable for the bilge water system of a luxury cruise ship

Abstract

The invention discloses an anti-air suction device suitable for the bilge water system of a luxury cruise ship, which comprises a sewage well, a float switch, a bilge water branch pipe, an elastic rubber air bag, a gas transmission pipeline, a control circuit and an inflation and deflation device. The level sensor and the bilge water branch pipe are arranged in the sewage well, the lower port of the bilge water branch pipe is used as the water suction port, the elastic rubber air bag is arranged in the water suction port, and is supported by the gas transmission pipeline, and one end of the gas transmission pipeline is connected with the elastic rubber The airbag is connected, and the other end is connected with the inflation and deflation device. The float switch is used to monitor the liquid level of the sewage well, and controls the inflation and deflation of the inflation and deflation device through the control circuit, thereby controlling the expansion of the elastic rubber airbag to block the water suction port or Make it smaller to unblock it. The invention has the advantages of simple structure, convenient disassembly and assembly, good sealing performance of the rubber air bag, self-cleaning function, automatic control and timely prevention of cavitation, and safe and effective operation of the bilge water system.

Description

technical field [0001] The invention belongs to the field of design and application of ship auxiliary systems, and relates to a ship bilge water drainage device, in particular to an anti-air suction device suitable for a luxury cruise ship bilge water system. Background technique [0002] A giant luxury cruise ship can carry nearly 5,000 passengers, and its primary task is to ensure the safe and stable navigation of the cruise ship. Therefore, a safe and reliable bilge water system is especially important. The bilge water system can be used to pump out the bilge water of the ship (mainly domestic water, deck flushing water, rainwater, etc. on the cruise ship. The oil leakage of the main engine, auxiliary equipment and pipeline equipment is relatively small), so as to ensure the normal operation of the electromechanical equipment and The cargo is intact and the ship sails stably. In addition, when an accident occurs, the system can also discharge the bilge water overboard i...

AI Technical Summary

Problems solved by technology

The bilge water system has the following disadvantages: if the bilge water in several compartments is pumped at the same time, once the bilge water in a certain compartment is sucked dry or a valve on a pipeline leaks, the bilge water pump will be evacuated , causing the bilge water in other compartments to be unable to be pumped

However, under the premise that the large-lift bilge pump manages multiple sewage wells and continues to work, when the suction port is closed, the pressure difference between the closed area formed by the floating part and the suction pipe and the external area is relatively large, and buoyancy alone may Unable to make floating parts float up in time

Moreover, the bottom of the sewage well in the engine room or the shaft tunnel contains a lot of sand and impurities, so it is likely that a closed space cannot be formed, resulting in the failure of the anti-air suction device

Therefore, the above-mentioned device is not suitable for large luxury cruise ship bilge water treatment

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