Heat regenerator of original surface for gas turbine

Abstract

The invention relates to a regenerator for a micro gas turbine, concretely is a original surface heat exchanger for increasing the heat efficiency of the gas turbine, it can increase the compactness and the service life of regenerator. The gas inlet and outlet channels are arranged on the right lower horn and the left upper horn, the high pressure air flows into the regenerator through the air inlet channel, flows out from the air outlet channel, the left and right frames of the heat exchanging board are welded and formed a air in / out aperture, the fuel gas can flow into the regenerator through the aperture, flows out form aperture on another side, the centre is heat exchanging corrugation plates, the flatten area at two sides of the plates is used to place flow guiding plate, the heat exchanging board has a side frame for welding and sealing. The flow speed at two sides has a little difference, the heat exchanging effect is the best, and it can upgrade the heat exchanging efficiency.

Description

technical field [0001] The invention relates to a recuperator of a micro gas turbine, in particular to a raw surface heat exchanger used to improve the thermal efficiency of the gas turbine. Background technique [0002] Regenerators are used in micro gas turbines to effectively use the waste heat of the gas at the outlet of the turbine to heat the high-pressure air at the outlet of the compressor, thereby improving the thermal efficiency of the device. Generally, a plate heat exchanger composed of parallel thin plates is used. In order to enhance heat transfer and increase the rigidity of the plate, corrugations are pressed on the plate, and the two adjacent corrugated plates are separated by a designed sealing strip to form a Channels, cold and hot fluids flow in each channel at intervals. Now with the help of figure 1 A split type regenerator of the prior art will be described. [0003] figure 1 (a) and (b) are schematic diagrams showing the structure of split-type re...

AI Technical Summary

Problems solved by technology

In addition, as the pressure loss increases, the regenerator is prone to fouling and blockage

[0009] For the regenerator with CC surface, the cross-sectional area of ​​the gas side and the air side flow channel are equal, which means that when the volume flow on both sides is similar, the heat transfer effect is better, but if the volume flow difference on both sides is large, such as in a micro gas turbine The difference between the volume flow rate of gas and air on both sides is more than three times, the difference in flow velocity is large, and the heat transfer effect is obviously reduced

[0010] For the improved CC surface in the prior art, only the corrugated shape of this surface has been improved, and the ratio of the cross-sectional area of ​​the flow channels on both sides of the air and gas formed on this surface has not been determined, and how to improve this surface has not been determined. Only in this way can the heat exchange effect of the media on both sides of the regenerator be the best

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