A kind of ship air filter and filtering method thereof

Abstract

The invention discloses an air filter for ships and warships and a filter method thereof. A traditional air filter is weak in effect of filtering sodium salt and water. The air filter comprises a filter body, a first-grade filter layer, a composite filter layer, a salt removing filter layer and a second-grade filter layer; the first-grade filter layer and the second-grade filter layer are arrangedat the two ends of the filter body; the salt removing filter layer is arranged on the outer side of the filter body, and is positioned at the middle part of the filter body; the composite filter layer is arranged on the outer side of the salt removing filter layer; substances to be filtered enter from the first-grade filter layer of the filter body, and are filtered by the composite filter layerand the salt removing filter layer; and un-filtered small particles with particle sizes of 50-100 meshes are secondarily filtered by the second-grade filter. The air filter can effectively improve thepurification and filter effects, purifies water and salt in the atmosphere, and prolongs the service life of marine engines.

Description

technical field [0001] The invention belongs to the technical field of filters, in particular to an air filter for ships and a filtering method thereof. Background technique [0002] As a power plant for ships, gas turbines have become a trend and development direction. Typically, gas turbines require a large air intake. However, the marine atmosphere often contains a lot of water and salt. Excessive water and salt corrode the blades of the compressor, and cause chemical corrosion and thermal damage to the hot passages such as the combustion chamber and the turbine, thereby affecting the performance and service life of the gas turbine. [0003] The marine atmosphere contains salt and exists in the form of aerosols, and the air intake of marine ships often requires desalination. For example, air intake for combustion and cooling of ship engines, air intake for communication electronic cabins, etc. At present, many large surface ships at home and abroad are equipped with ga...

AI Technical Summary

Problems solved by technology

At present, many large surface ships at home and abroad are equipped with gas turbine power. The gas turbine with a large air intake has stricter requirements on the desalination of the intake air, which is not only reflected in the desalination effect, but also the desalination device. More stringent requirements are put forward for the resistance and size of the marine filter; the filtering effect of the marine filter element is not high, the desalination effect is not thorough, and the filter is replaced frequently during the use process, which causes the problem of the short service life of the marine filter.

[0004] Chinese patent authorization number CN203394658U discloses a novel marine diesel engine air filter, including a seal ring 1, a throat clamp 2, an air outlet pipe 3, a front cover 4, an air filter element 5, a rear cover 6, and the air filter element 5 filter material is double A layer of stainless steel wire mesh is bonded and fixed with the front cover 4 by an adhesive. The front cover 4 is made of metal and has a through hole with flanging on it. The back cover 6 is made of foamed polyurethane (PU). The air filter element 5 is fixed in position and forms a seal; however, this technical solution does not effectively filter and purify the moisture and salt in the atmosphere, which leads to further corrosion of the relevant equipment of the ship, and the filtering effect of the stainless steel filter is not thorough

[0005] Chinese patent authorization number CN204783353U discloses an air filter for an internal combustion engine of a ship's large warehouse movable aerial work platform, including a filter housing assembly (1) and an external filter element (11). The top of the component (1) is connected with an air outlet branch pipe (6), and the air outlet branch pipe (6) communicates with the air inlet of the internal combustion engine. The filter housing assembly (1) has at least one filter element inside, and the external There is at least one filter element inside the filter element (11), and the air outlet of the external filter element (11) is connected to the interior of the filter housing assembly (1). This technical solution has the problems of low sandblasting efficiency and high maintenance cost , and this technical solution can not improve the effect of filtering sodium salt and water only by setting two filter elements combined with the filter element locking nut, and the technical solution needs to be further improved

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