An air compressor unit with high-quality recovery and storage of cold and heat between stages

Abstract

The invention discloses an air compressor set capable of recovering and storing interstage cold and heat energy in a high-quality manner. The air compressor set comprises an air compression system and an interstage heat energy recovering and storing system, wherein the air compression system comprises a plurality stages of air compressors (1-6) which are connected in series through a pipeline; the interstage heat energy recovering and storing system comprises pumps (13 and 14) which are connected through a pipeline, a plurality stages of interstage coolers (7-12), and storage tanks (16-18) with different temperature grades; the interstage coolers are arranged between adjacent two stages of air compressors; the air compression system and the interstage heat energy recovering and storing system are coupled together through the interstage coolers; the hot sides of the interstage coolers are connected with a compressed air pipeline, the cold sides of the interstage coolers are connected with a cooling agent pipeline, and cooling agent outlets of all the interstage coolers are connected with the storage tanks with corresponding temperature grades through the cooling agent pipeline. According to the air compressor set disclosed by the invention, interstage cold and heat energy can be recovered in a high-quality manner and can be respectively stored in the storage tanks with different temperature grades according to the quality of energy grade, so as to realize the recovery and storage of the interstage cold and heat energy to a maximum extent in terms of quantity and quality.

Description

technical field [0001] The invention relates to an air compressor unit, in particular to an air compressor unit capable of recovering high-quality interstage cooling heat and storing them separately according to their energy grades. Background technique [0002] At present, the air compressor units producing high-pressure air all adopt the technical scheme of multi-stage compression and inter-stage cooling. The traditional interstage cooling method is: using water as the coolant, cooling the compressed air through the interstage cooler, the cooled compressed air enters the next stage air compressor, and the cooling water that absorbs heat is released to the atmosphere through the radiator The heat is recycled after its own temperature is lowered. This approach has resulted in a complete waste of interstage heat in both "quantity" and "quality". Contents of the invention [0003] In order to overcome the shortcoming that the interstage cooling heat of the existing air com...

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Problems solved by technology

[0003] In order to overcome the shortcoming that the interstage cooling heat of the existing air compressor unit cannot be recovered and stored with high quality, the present invention provides a new type of air compressor unit

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