Method and apparatus for improving air storage type wind tunnel

Abstract

The invention, which belongs to the technical field of the wind tunnel, particularly relates to a method and apparatus for improving an air storage type wind tunnel. The method comprises: low-pressure liquid air or low-pressure liquid nitrogen absorbs an environment heat source by a vaporizer and and is converted into normal-temperature high-pressure gas by an environment heat source; a compressed gas tank is filled with one part of the normal-temperature high-pressure gas and the other part of the normal-temperature high-pressure gas drives an expansion machine to convert high-pressure potential energy into mechanical energy so as to drive an air compressor; the expansion machine discharges exhaust gas for cooling the air compressor; normal-temperature high-pressure gas after boosting by the air compressor is inputted into the air compressor, high-pressure gas generated by compression by the air compressor and the exhaust gas discharged by a cooling outlet of the air compressor are mixed and then mixed gas enters the compressed gas tank; and compressed gas from the compressed gas tank enters a wind tunnel pipe at a high speed through a wind tunnel jet head to form a wind tunnel airflow. According to the invention, the vaporizer, the air amplifier, and the expansion machine are used for the wind tunnel field; the environmental thermal energy is utilized fully; the electric energy consumption is substantially reduced; rapid and continuous large-airflow air supply is realized; the system is simplified; the energy consumption is reduced; the efficiency is high; and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of wind tunnels, and in particular relates to a method and a device for improving an air storage type wind tunnel. Background technique [0002] A wind tunnel is a wind tunnel laboratory, which is a pipe-shaped experimental device that artificially generates and controls airflow to simulate the flow of air around an aircraft or entity, and can measure the effect of airflow on entities and observe physical phenomena. , it is an indispensable part of the aircraft development work. It not only plays an important role in the research and development of aviation and aerospace engineering, but also is indispensable in the fields of transportation, housing construction, and wind energy utilization with the development of industrial aerodynamics. [0003] There are two types of drive systems for wind tunnels. One is continuous wind tunnels, which consist of a controllable motor unit and a fan or axial compressor dr...

AI Technical Summary

Problems solved by technology

When the compressor is working, the power consumption is huge, ranging from tens of kilowatts to tens of thousands of kilowatts, and the energy conversion efficiency of the compressor is very low, between 10 and 20%, most of the energy is turned into heat and lost to the environment

The traditional gas storage wind tunnel has high energy consumption, low efficiency, and short continuous working time. At the same time, an unstable large load puts a lot of pressure on the power grid

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