Lubrication water device for open type water lubrication tail bearing and operation method of device

Abstract

The invention discloses a lubrication water device for an open type water lubrication tail bearing and an operation method of the device. The device comprises an oxidator, a gas compressor, a seawaterdesulfurization cabin, a seawater supply pump, a lubrication seawater cabin and a lubrication seawater supply pump, wherein the oxidator oxidizes exhaust gas from an exhaust gas header pipe, sulfur oxide in the exhaust gas is converted into sulfur dioxide, the gas compressor compresses and transports oxidized exhaust gas, which enters the seawater desulfurization cabin and the lubrication seawater cabin respectively through an electrical opening valve, an inlet of the seawater supply pump is connected with a seawater precipitation cabin, an outlet is connected with the lubrication seawater cabin, the lubrication seawater cabin is supplemented with lubrication seawater through the seawater supply pump, and the lubrication seawater supply pump is used for drawing the lubrication seawater inthe lubrication seawater cabin so as to be used by a tail shaft tail pipe device. The lubrication water device utilizes the lubrication seawater cabin to participate in exhaust gas desulfurization, meanwhile, the waste heat of the exhaust gas is utilized to reduce the content of ice crystal in the lubrication seawater, friction is lowered, and a desulfurization process is further utilized to lower the pH value of the lubrication seawater, thereby weakening the corrosivity of the seawater.

Description

technical field [0001] The invention belongs to the field of ships, and relates to a water-lubricated stern shaft auxiliary equipment, in particular to a lubricating water device for an open-type water-lubricated stern bearing and an operating method thereof, which can supply sufficient water while removing sulfur oxides in exhaust gas. Bearing lubrication water required. Background technique [0002] Green environmental protection is the general trend of the development of the shipbuilding industry in the future. The pollution of ships during navigation mainly includes air pollution, oil pollution, domestic sewage pollution and garbage pollution. Among them, the main pollution is air pollution and oil pollution. The sulfur content of marine heavy oil is relatively high, so the hazards of sulfur oxides in air pollution are more serious. Lubricating oil leaked from the lubricating tail bearing is mainly polluted. For the pollution of sulfur oxides, the International Maritim...

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Problems solved by technology

There are currently two main solutions to the problem of oil-lubricated tail bearings polluting navigation waters. One is to use environmentally friendly lubricating oil. This method cannot solve the problem of lubricating oil leakage, but only reduces the harm to navigation waters. Some shipyards reported that the stern tube bearings using environmentally friendly lubricating oil had high temperature alarms and bearing wear, indicating that there are still problems with the reliability of the stern bearings lubricated with environmentally friendly lubricating oil; another solution is to use water lubricated bearings, water lubricated bearings It can be divided into open type and closed type. For ships navigating in clean waters, open water lubricated bearings are better than closed water lubricated bearings. However, ships navigating in cold waters such as polar regions, due to ice crystals in seawater The existence of the open water lubricated bearing will increase the friction and wear, reduce the reliability and life, so it is very important to remove the ice crystals in the lubricated seawater

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