Oxygen generation control system of PSA oxygen generator

Abstract

The invention provides an oxygen generation control system of a PSA oxygen generator. The PSA oxygen generator comprises an air compressor, a freezing dryer and an oxygen generator; an oxygen generation control system of the PSA oxygen generator at least comprises an air tank drainage system, an oxygen concentration adjusting control and alarm system, a freezing dryer control system, a PLC controlprogram and a network control system; the air tank drainage system at least comprises a pressure sensor mounted at the bottom of an air storage tank, a drainage air control valve mounted at the bottom of the air storage tank and a dew point monitoring device mounted at an exit of the air storage tank. In the drainage system of the control system, a pressure sensor and a drainage air control valveare mounted at the bottom of the air storage tank, and a dew point monitoring device is mounted at the exit of the air storage tank; the drainage time and drainage interval of the air tank can be accurately controlled according to the pressure and dew point of the air tank; therefore, the oxygen generation control system of the PSA oxygen generator has the advantages of more accurate control, more stable performance and high safety.

Description

technical field [0001] The invention relates to the technical field of oxygen production, in particular to an oxygen production control system for a PSA oxygen generator with more precise control, more stable performance and good safety. Background technique [0002] The deficiencies of the control system of the existing PSA oxygen generator are: [0003] 1. The traditional air tank drainage system is realized by installing an electronic drain valve or a floating ball drain valve at the bottom of the air tank. The electronic drainage valve can only set the drainage time and drainage gap in advance, and the time interval cannot be set too short, which is not suitable for some special requirements. When the source quality is not good, it is easy to cause the oil to condense on the float, resulting in the failure of the drain valve to open; [0004] 2. When the traditional oxygen generator detects that the oxygen concentration is lower than 90%, it will output a fault and aut...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a PSA system for the poor controllability of the structure of the existing air tank drainage system, inconvenient setting of drainage time or easy drainage failure, imperfect oxygen concentration adjustment control and alarm system, and simple control of the cold dryer. Oxygen control system of oxygen machine, the drainage system of the control system is installed a pressure sensor and a drainage air control valve at the bottom of the air storage tank, and a dew point monitoring device is installed at the outlet of the air storage tank, which can be accurately controlled according to the pressure and dew point of the air tank The drainage time and drainage interval of the air tank, while improving the oxygen concentration adjustment control and alarm system, and improving the control system of the cold dryer, is an oxygen production control for PSA oxygen generators with more precise control, more stable performance and better safety. system

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