Nitrogen continuous supply device and control method thereof

Abstract

The invention relates to the field of nitrogen supply equipment, in particular to a nitrogen continuous supply device and a control method thereof. The nitrogen continuous supply device is characterized in that the system comprises a nitrogen making machine, a nitrogen storage tank, a compressed air inlet electromagnetic valve, a high-concentration nitrogen recycling electromagnetic valve, a nitrogen emptying electromagnetic valve and a nitrogen supply electromagnetic valve, wherein the nitrogen making machine is connected with the compressed air inlet electromagnetic valve through a gas inlet pipeline; the gas inlet pipeline communicates to an output pipeline of the nitrogen making machine through a circulating pipeline; the high-concentration nitrogen recycling electromagnetic valve is arranged on the circulating pipeline; a check valve is mounted at the end, close to the nitrogen making machine, of the output pipeline; the tail end of the output pipeline communicates with the nitrogen storage tank through a control valve; and a gas outlet end of the nitrogen storage tank is connected with the nitrogen supply electromagnetic valve and the nitrogen emptying electromagnetic valve through the control valve. The device can be used at any time when picked and supply nitrogen continuously, unnecessary nitrogen waste is reduced, the rapid nitrogen supply of the nitrogen making machine is shortened, and the application range is wider.

Description

technical field [0001] The invention relates to the field of nitrogen supply equipment, in particular to a continuous nitrogen supply device and a control method thereof. Background technique [0002] Nitrogen production by air separation is to separate and produce nitrogen from air by using molecular sieve pressure swing adsorption principle (SPA) through physical methods. The main components in the air are oxygen and nitrogen. The diameter of oxygen molecules is smaller than that of nitrogen molecules, so the diffusion speed is hundreds of times faster than that of nitrogen. Therefore, when the air passes through the molecular sieve, the rest is basically nitrogen; The principle of desorption is to produce nitrogen; however, there are various types of nitrogen generators on the market. Most of these nitrogen generators are used in industry. Once they are used, they basically do not stop. It takes a period of time to produce qualified nitrogen. On the one hand, this nitrog...

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Problems solved by technology

The main components in the air are oxygen and nitrogen. The diameter of oxygen molecules is smaller than that of nitrogen molecules, so the diffusion speed is hundreds of times faster than that of nitrogen. Therefore, when the air passes through the molecular sieve, the rest is basically nitrogen; The principle of desorption is to produce nitrogen; however, there are various types of nitrogen generators on the market. Most of these nitrogen generators are used in industry. Once they are used, they basically do not stop. It takes a period of time to produce qualified nitrogen. On the one hand, this nitrogen production method wastes a lot of gas

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