Method and device for detecting output gas flow of gas storage tank

Abstract

The invention discloses a method and device for detecting the output gas flow of a gas storage tank. Mainly the output gas flow of the gas storage tank can be detected without using a flow sensor, thestructure is simple, and the cost is low. The method comprises the steps that the volume of the gas storage tank, flow coefficients of a solenoid valve of the gas storage tank and a gas outlet diameter of the gas storage tank, a valve opening time of the gas storage tank, and gas tank pressure value and gas temperature value of the gas storage tank collected at every preset time intervals after the valve is opened; according to the volume of the gas storage tank, the flow coefficients of the solenoid valve of the gas storage tank and the gas outlet diameter of the gas storage tank, the valveopening time, each gas tank pressure value collected after the valve is opened, and each gas temperature value collected after the valve is opened, the flow of the gas output from the gas storage tankcorresponding to the valve opening time is detected. The method and device for detecting the output gas flow of the gas storage tank are suitable for detection of the flow of the gas output from thegas storage tank.

Description

technical field [0001] The invention relates to the field of gas flow detection, in particular to a method and device for detecting the output gas flow of a gas storage tank. Background technique [0002] Oxygen generator refers to the equipment that uses the molecular sieve pressure swing adsorption principle to increase the oxygen concentration by absorbing nitrogen and other gas components. When the equipment is working, it usually injects compressed air into a closed adsorption tower equipped with molecular sieves to cause the adsorption tower As the pressure rises, the molecular sieve in it absorbs a large amount of nitrogen in the compressed air with the increase of the ambient pressure, while the oxygen in the compressed air still exists in the form of gas and is collected through a certain pipeline. , in order to ensure the continuous and stable output of oxygen, it is necessary to master the output gas flow parameters of the oxygen generator. [0003] At present, t...

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Problems solved by technology

[0003] At present, there are usually two ways to detect the output gas flow of gas storage tanks such as oxygen generators. One is to detect the gas flow through a flow sensor, and the other is to detect the gas flow through a combination of a pressure sensor and a spring. However, using a flow sensor to detect the flow of gas will increase the manufacturing cost of the gas storage tank. In addition, using a combination of sensors and springs to detect the gas flow will cause the spring to be installed in the gas storage tank, increasing the gas storage capacity. The components of the tank lead to a complex internal structure of the gas storage tank, which takes up more space and is not easy to carry

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