Micro gas turbine and raw surface regenerator

Abstract

The invention provides an original surface heat regenerator. The original surface heat regenerator comprises a plurality of heat exchange core bodies which are arranged in a stacked mode in the circumferential direction, each heat exchange core body comprises a rectangular corrugated area located in the middle, a first arc-shaped side edge flattening area and a second arc-shaped side edge flattening area which are located on the two sides of the rectangular corrugated area; arc-shaped flow guide thin sheets connected with the edges of the inner rings of the heat exchange core bodies to the rectangular corrugated area are arranged in a cold fluid flow guide area, the arc-shaped flow guide thin sheets are provided with flow guide arc surfaces which extend along a radial directions of the heat exchange core bodies to the axial direction of the heat exchange core bodies; and straightness flow guide thin sheets which are arranged in a hot fluid flow guide area along the axial directions ofthe heat exchange core bodies; an arc-shaped flow guide thin sheets are arranged, a cold fluid introduced in the radial direction is uniformly distributed in the radial direction and then is introduced into the rectangular corrugated area for heat exchange; the arc-shaped flow guide thin sheets are provided with the flow guide arc surfaces which extend along the radial direction to the axial direction of the heat exchange core bodies in a transition mode, so that the pressure drop of the cold fluid is enabled to be uniform, and the heat exchange effect is improved; and the invention further provides a micro gas turbine.

Description

technical field [0001] The invention relates to the technical field of micro gas turbines, more specifically, to a micro gas turbine and an original surface regenerator. Background technique [0002] The continuous reduction of global fossil energy reserves puts forward higher requirements for the efficient use of energy. If waste heat energy such as traditional thermal machinery, thermal power plants or industrial waste exhaust is not reutilized, it will cause huge energy loss. While pursuing the utilization of new energy, improving the utilization rate of traditional energy has also become an imperative goal. [0003] For example, micro gas turbines, as the core part of the energy supply system of energy islands, have been greatly developed in recent years. Energy islands use high-efficiency micro gas turbines as power. When regenerators are used, the power generation efficiency alone can reach 30%. As one of the core components of the micro gas turbine, the regenerator ...

AI Technical Summary

Problems solved by technology

Since the equivalent diameter of the circulation channel of the micro gas turbine regenerator is generally about 1mm, the unreasonable deflector design can easily block the flow channel and deteriorate the heat transfer effect of the rectangular corrugated area.

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