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

Abstract

The invention discloses a method and a device for detecting the output gas flow rate of a gas storage tank, mainly in that the output gas flow rate of the gas storage tank can be detected without using a flow sensor, and the structure is simple and the cost is low. The method includes: obtaining the volume of the gas storage tank, the flow coefficient between the electromagnetic valve of the gas storage tank and the diameter of the gas outlet of the gas storage tank, the valve opening time of the gas storage tank, and every preset time after the valve is opened The gas tank pressure value and gas temperature value of the gas storage tank collected at intervals; according to the volume of the gas storage tank, the flow coefficient of the electromagnetic valve of the gas storage tank and the gas outlet diameter of the gas storage tank, the valve opening Time, each gas tank pressure value collected after the valve is opened, and each gas temperature value collected after the valve is opened, and the flow rate of the gas storage tank output corresponding to the valve opening time is detected. The invention is suitable for detecting the output gas flow rate of the gas 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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