A high-speed air intake filter device inertia stage blade

Abstract

The invention aims at providing an inertial-stage blade for a high-speed air inflow filtration device. The section of the inertial-stage blade is in a streamline type and is composed of two flow guide segments, two drainage grooves and a transitional segment for connecting the two drainage grooves. Outside structures of the two drainage grooves and all the parts are in transition through large-radius arcs, so that the flow resistance losses are reduced. The inlet area and volume of each drainage groove are large, and the drainage capacity is high under the high air flow speed condition. The front flow guide segment and the rear flow guide segment are each in a triangular shape, the air inflow edge of the front flow guide segment and the air outflow edge of the rear flow guide segment are in round-corner transition, and therefore the influences caused by air flow separation are reduced. By the adoption of the inertial-stage blade for the high-speed air inflow filtration device, the high air and water separation efficiency can be kept under the high-speed air inflow condition, meanwhile, the low total pressure loss level is kept, and the blade has the beneficial effects of being suitable for the high flow circulation speed condition, simple in structure, convenient to machine, low in cost and the like.

Description

technical field [0001] The invention relates to a vane, in particular to a vane of an air intake filter device. Background technique [0002] The inertial stage blades are installed in the intake air filter of the gas turbine to remove impurities such as solids, liquids and salt mist aerosols in the air. The inertia stage blades can remove most impurities, but it will inevitably cause a certain total pressure loss to the airflow, resulting in a certain degree of decline in the output power and efficiency of the gas turbine. For every 50Pa increase in total pressure loss, the output power of the gas turbine will decrease by 0.1%. [0003] Traditional inertia stage blades work between the inlet air velocity of 1 ~ 7m / s. [0004] However, with the rapid development of gas turbine technology, the output power of gas turbines continues to increase, and the amount of air imported into them also increases. Taking GE's LM2500 series as an example, the output power and intake air ...

AI Technical Summary

Problems solved by technology

If the traditional inertia stage continues to be used, the total pressure loss will exceed the limit due to the high flow velocity

Then the traditional inertia stage blades are not applicable

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