Air compressor system with turbo expander

Abstract

The invention discloses an air compressor system with a turbo expander. The air compressor system comprises a compressor, an intercooler, a humidifier, a motor, the turbo expander and a sealing air path; the intercooler and the humidifier are sequentially connected with an exhaust port of the compressor, and the humidifier is connected with a fuel cell; compressed gas exhausted by the compressor sequentially passes through the intercooler and the humidifier and then enters the fuel cell; the motor is arranged coaxial with the compressor; the turbo expander is arranged coaxial with the motor, and the turbo expander and the compressor are located at the two sides of the motor respectively; the turbo expander is configured to drive the compressor together with the motor under the drive of airexhausted by the fuel cell; and the sealing air path is connected between the motor and the turbo expander from an exhaust port of the intercooler, and the sealing air path can prevent air in the turbo expander from entering the motor. According to the air compressor system, rust-proof treatment on liable-to-be-rusted parts of the motor is avoided, and the manufacturing cost is reduced.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to an air pressure system with a turbo expander for supplying air to the fuel cells. Background technique [0002] The fuel cell is an efficient and clean new energy power system. The air compressor compresses the air and then sends it to the cathode of the fuel cell. The air reacts chemically with the hydrogen in the anode, and the products generated are electricity and water, and part of the heat is Excess air is discharged into the atmosphere, and there are no other products that pollute the environment, so fuel cells are very clean and environmentally friendly. At present, countries are vigorously promoting the development and promotion of hydrogen fuel cell power systems. [0003] The air compressor dedicated to the fuel cell is a very important component in the hydrogen fuel cell power system. Its function is to provide a certain pressure and a certain flow rate of compressed air for...

AI Technical Summary

Problems solved by technology

However, this also brings about a problem. The high-pressure air discharged from the fuel cell contains a certain amount of water vapor, so that the moisture in the high-pressure air can enter the motor casing through the gap between the turbine and the clicker, which will easily cause the motor stator, Rotor, bearing and other parts are rusted

In order to solve this problem, the means used in the prior art is to carry out anti-rust treatment on the easily rusted parts in the motor, but this treatment method will cause high cost

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