Control method for energy multistage utilization of pneumatic motor

Abstract

The invention discloses a control method for energy multistage utilization of a pneumatic motor, and belongs to the field of energy conservation and emission reduction. According to the control method, the flow requirement of an air supply system of the pneumatic motor is improved and the response time of the air supply system of the pneumatic motor is prolonged through parallel connection of electromagnetic valves; the variable expansion ratio and the variable compression ratio of the pneumatic motor are achieved by adjusting the opening time and the closing time of the different electromagnetic valves, and the energy utilization rate of the pneumatic motor is increased. The pneumatic motor converts energy of compressed air into continuously rotating mechanical energy and has the advantages of being low in price, convenient to operate and use, easy to maintain, capable of achieving stepless speed change and the like. When the pneumatic motor is used as an expansion machine, the exhaust temperature of the pneumatic motor is lower than the environment temperature, so that the exhaust of the pneumatic motor has the potential of refrigeration, and the exhaust of the pneumatic motor can be used for refrigeration when a user needs to cool; and when the pneumatic motor serves as a compressor, the temperature of the compressed air rises while the pneumatic motor generates the compressed air, and therefore the pneumatic motor can supply heat to the user when serving as the compressor.

Description

technical field [0001] The invention relates to a control method for multi-stage energy utilization of an air motor, which belongs to the field of energy saving and emission reduction. Background technique [0002] Energy is an important material basis for human survival and development, and it is also a powerful driving force for national economic development. Compressed air energy storage is an energy storage method that has attracted much attention because of its advantages such as long life, large capacity, low cost, and less environmental pollution. However, compared with batteries, etc., the cycle efficiency of compressed air energy storage is relatively low . The compressed gas flows out from the gas storage tank and flows into the cylinder after being decompressed by the pressure reducing valve. Decompression results in a decrease in the ability of the compressed gas to do work. The exhaust pressure of the air motor is higher than the pressure of the ambient atmos...

AI Technical Summary

Problems solved by technology

Decompression leads to a decrease in the ability of the compressed gas to do work

The exhaust pressure of the air motor is higher than the pressure of the ambient atmosphere, and the exhausted gas also has some ability to do work, and the exhaust gas with a pressure higher than the ambient atmospheric pressure also leads to the loss of energy of the compressed gas carried by the air motor

When the expansion ratio of the air motor is fixed, it will lead to the loss of effective energy of the compressed gas

Images