Compressed air heat energy recovery and control system

Abstract

The invention discloses a compressed air heat energy recovery and control system. The control valve opening of a circulating water exit is regulated according to parameters of pressure, temperature, liquid level and the like. The whole system can perform automatic operation and the use is convenient. The compressed air heat energy recovery and control system comprises a heat exchanger, a water cooling system, a heat energy utilization device, a circulation water tank with a water inlet pipe, a circulating pump and a controller, wherein a compressed air outlet of an air compressor is connected with the heat exchanger, the heat exchanger is further respectively connected with the circulating pump and the water cooling system, the circulating pump is connected with the circulation water tank through the heat energy utilization device, the controller is respectively connected with an air inlet temperature sensor, an air outlet temperature sensor, an air outlet pressure sensor, a circulating water inlet temperature sensor, a circulating water outlet temperature sensor, a circulating water tank water supply inlet temperature sensor, a circulating water tank temperature sensor, a liquid level sensor, an inlet pneumatic valve, a by-pass pneumatic valve, an electric valve, a control valve, a water supply magnetic valve, the circulating pump and the water cooling system.

Description

technical field [0001] The invention relates to an air compressor, in particular to a compressed air heat recovery device and a control system for the air compressor. Background technique [0002] With the rapid development of industrialization, the application of air compressors is becoming more and more extensive. At present, the power consumption of air compressors is estimated to account for about 25% of the total power grid, and even higher in some industries. The use efficiency of air compressors is generally low, and the proportion of electric energy actually consumed to increase the potential energy of the air is relatively small, and most of the electric energy is converted into heat and discharged through cooling. In fact, the recoverable heat of the air compressor accounts for 40%-90% of the input power, and the waste heat recovery of the air compressor is becoming more and more important. [0003] The patent document with the publication date of December 8, 2010...

AI Technical Summary

Problems solved by technology

The disadvantage of this technical solution is that, firstly, the heat dissipation is adjusted only according to the cooling outlet temperature of the air compressor without considering the operating parameters such as the temperature and pressure of the compressed air itself, lack of comprehensive control, which is not conducive to the normal operation of the air compressor, especially Especially for centrifugal air compressors or oil-free screw air compressors, recovering the heat of oil and water may also cause abnormal operation of the air compressor; second, the heat recovery system of compressed air cannot be adjusted and controlled, and there is a lack of corresponding safety measures. and ease of use

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