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A hydrophore is a scientific instrument used to draw up water samples from any source at any depth. A hydrophore system is a pressurized reservoir, which in addition to obtaining the sample, stores it and transports it to any region with minimum to a maximum degree of requirement continuously all around its pathways across various distances. The hydrophore tank is filled with 70% water and the rest with air. The air is supplied and kept at a required pressure value and the force imparted upon the water acts as its driving force like a spring. It might be stored on the port side and/or the starboard side on the bottom of the ship, preferably. This system can be seen widely implemented in the sector of fire force, sprinkler systems, and of course in marine vessels.
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• Electrical energy consumption: A centrifugal pump requires electrical energy as input to work, while a hydrophore does not. So electricity can be conserved.
• Irregular pressure drops: In centrifugal pumps, frequent cut-ins and cut-offs (starting and stopping) of a motor cause irregularities in sustaining stable pressure values. So we use a hydrophore system that utilizes pressure energy for its mechanical work instead of electrical energy and would maintain stability in the pressure developed.
• Filling Valve: Fills the fresh water tank with water from the Fresh Water Generator and clinometer.
• Side Glass: Present in both freshwater tanks and hydrophore tanks and is used to check the quantity of water held.
• Inlet Valve – Filter – Null Return Valve: An arrangement of these 3 pieces of machinery is present in between the tank and hydrophore and each ensures the following work respectively.
• The inflow of water from the storage tank:
o Extra filtering before admission
o Ensuring zero backflow
• Drains: Located at the bottom to drain the water out.
• Service air valve: This is an auxiliary compressor that provides a low-pressure air supply into the tank, generally at 6 bar, after being filled with water.
• Pressure gauge: Measures the pressure of the contained air.
• Relief valve: Removes air if by chance the pressure value exceeds the expected.
• Vent pipe: Used in the venting process while in maintenance or charging of the tank.
• Inlet valve and outlet valve: Works as the name suggests for the hydrophore tank.
• The outlet further extends to various zones.
• Pressure switch: This is an important tool that has a prominent role in the working of the system and could be well explained in the next section hopefully.
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