As a very powerful weapon in the national defense forces, warships have been shown in many movies and TV dramas, but you may not know that there is a sea valve at the bottom of every warship, and there are more than one large warship, and even dozens of large warships. So what are these cast sea valves used for? Today we will talk about this topic.

Sea valve is a necessary equipment for every warship. If there is no sea valve, the warship can hardly navigate.

The main function of the sea valve is to help the main engine and auxiliary engine to cool down. It is a bit like the air conditioner used in our daily life. For example, the steam engine or diesel engine used in large warships need the normal operation of boilers, steam turbines and diesel generators to keep working. These equipment need to be cooled accordingly.

Like the steam turbine system, the steam needs to be cooled into water in the process of work, but this requires a condenser, which is also one of the more important equipment in the engine room. The condenser itself can not cool the steam, but needs to continuously recycle and absorb the waste heat in the steam, and extract a large amount of seawater from the ship for circulation. In order to make better use of the sea water, the designers installed a sea valve at the bottom of the ship.

Although the sea valve is only a small tool, it plays a very important role in the safety of warships. Therefore, the person who operates it must hold relevant training certificates and be certified. Therefore, like those who have no operating experience, they can not operate it at all.

The sea valve is generally installed at the position below the no-load waterline of the ship, that is, there is one on each side, and it needs to be controlled by the hand wheel or the deck transmission mechanism to open and close the valve. In addition to cooling, the sea valve can also use seawater as clean water.

In fact, sea valves are not only used on warships. Almost all ships need sea valves. In addition, there are sea valves on oil tank trucks, oil platforms, petrochemical and other equipment. In other words, sea valves are actually very broad in definition.

The sea valve has many openings on the warship, and when sailing in the sea, the low-level submarine gate will be used for water intake. However, in shallow water areas, such as the Yangtze River, the high-level submarine gate is used for water intake. This is because if the low-level submarine gate is used in a basin like the Yangtze River, it is easy to absorb sediment or other objects in the process of pumping. Therefore, in shallow water areas, only the high-level submarine gate is generally opened.

In addition to cooling, sea valves can even help warships balance.

For example, if a warship is hit on one side during a naval battle, the warship will be inclined out of balance. At this time, the sea valve will be opened, and the seawater will be introduced into the warship. The warship will sink quickly by filling with water, thus helping the warship maintain balance.

It is worth noting that the warship is not specially designed with a self sinking sea valve, so it is very rare for the warship to choose to use the sea valve to maintain balance after being shot on one side. After all, it is impossible for the enemy warship to stop after hitting you. Therefore, the use of the sea valve to maintain balance is basically only used in flight or under special circumstances.