Terminal filter device in front of combustion gas turbine

Abstract

The invention relates to a terminal filter device in front of a combustion gas turbine. The terminal filter device comprises a main body, an air inlet end and an air outlet end, wherein the main body is of a vertical cylinder structure, and the air inlet end and the air outlet end are formed on two sides of the main body; and an L-shaped baffle is arranged at a part corresponding to the air inlet end in the main body, a vertical cylindrical filter element is arranged on the rear side of the L-shaped baffle, and the upper end of the vertical cylindrical filter element is opened and is fixed in the main body. The terminal filter device has the beneficial effects that the strength of the filter element is relatively high, the structure is relatively reasonable, and fragments do not enter the downstream to damage downstream equipment even when the filter element is damaged; the volume of an inner cavity of a filter is increased, so that the processing property of the filter is improved; and by modifying a filter net of the filter into a three-layer filter net structure, the filtration area is increased, the strength is enhanced, and the filtration schedule is accelerated.

Description

technical field [0001] The invention relates to a terminal filter device in front of a gas turbine, belonging to the technical field of filters. Background technique [0002] Before the natural gas enters the gas turbine, the solid particles (generally composed of sand, rust, tar and silica (SiO2), etc.) should be confined to prevent erosion, fouling and clogging of the gas nozzle. According to the requirements in the E00-05139 R1 gas fuel technical specification: the solid particles supplied from the gas to the combustion system should be limited to less than 30ppmwt. The maximum diameter is 5 μm, and all solid particles cannot exceed 5 μm. In order to meet the requirements of this specification, before the gas enters the gas turbine, the owner must provide a filter to remove 99.5% wt of all particles and all particles larger than 5 μm. Y-type filters with simple structure are generally used for the terminal filtration of existing gas turbines. However, this kind of filt...

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Problems solved by technology

[0003] The technical problem to be solved in the present invention is: in the existing terminal filter device before the gas turbine, the filter is limited by the diameter of the gas flow pipe, and the impurity removal ability is weak, which easily causes the filter screen to be blocked or even broken down, and needs to be replaced frequently. normal operation affected

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