Design of constant humidity and pressure regulating system for hyperbaric oxygen chamber
10.19745/j.1003-8868.2024071
- VernacularTitle:高压氧舱恒湿平压系统的设计
- Author:
Qing XU
1
;
Mu-Yang YAN
;
Jie HUANG
Author Information
1. 解放军总医院第一医学中心高压氧科,北京 100853
- Keywords:
hyperbaric oxygen chamber;
consant humidity and pressure regulating system;
humidity control;
static electricity elimination
- From:
Chinese Medical Equipment Journal
2024;45(4):61-65
- CountryChina
- Language:Chinese
-
Abstract:
Objective To design a constant humidity and pressure regulating system to ensure the safety of the hyperbaric oxygen chamber by eliminating the hazards caused by electrostatic sparks in the chamber.Methods The system was mainly composed of a humidifying device,a dehumidifying device,a pressure regulating device,a main controller,pressure sensors and temperature and humidity sensors.The humidifying device used a specially processed explosion-proof filter bottle as its main body;the dehumidifying device was a industrial-grade fan filter unit(FFU),consisting of an evaporator,a condenser and a turbine;the pressure regulating device was made up of solenoid valves and decompression piping;an EX3G-C series PLC touch screen integrated machine was used as the main controller,and other components included NWSF-1AT temperature and humidity sensor and TXYS-G1K2HN3 pressure tansmitter(pressure sensor).The system had the control software programmed with the instruction table language and overall regulation with proportional-integral-devivative contrl algorithm.Results Trials proved that the system developed could keep the relative humidity in the hyperbaric chamber constant at 70％,making it extremely difficult to generate static electricity in the chamber.Conclusion The system developed regulates the humidity in the oxygen chamber,reduces electrostatic sparks and ensures the safety of treatment in the chamber.[Chinese Medical Equipment Journal,2024,45(4):61-65]
