Design and implementation of negative pressure environment in container-type of biological isolation shelter based on air freight conditions
10.3969/j.issn.1672-8270.2024.05.006
- VernacularTitle:基于空运条件的集装箱式生物隔离方舱负压环境设计与实现
- Author:
Jiangxia DUAN
1
,
2
;
Xue HUANG
;
Changlei HOU
;
Jincheng GUO
;
Hongbing LU
;
Dongguang WANG
Author Information
1. 空军军医大学军事生物医学工程学系 西安 710032
2. 生物电磁检测与智能感知陕西省重点实验室 西安 710032
- Keywords:
Power distribution;
Negative pressure stabilization;
Intelligent regulation;
Air freight;
Container;
Bio-safety
- From:
China Medical Equipment
2024;21(5):31-35
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To research and design a negative pressure environment that can be applied in container type of biological isolation shelter,so as to meet the stable negative pressure environment and dynamic intelligent regulation of pressure difference in the container during multimodal transportation,especially under air freight conditions.Methods:The design specifications and research achievements of pressure differences of negative pressure isolation equipment for infectious diseases at home and abroad were comprehensively analyzed.And then,one kind of power-distributed ventilation system without air duct was designed to achieve.The preseted pressure redundancy,real-time monitoring of sensors and dynamic follow-up of pressure were used to realize stable and intelligent regulation of negative pressure within the container during air freight.Results:After testing,the pressure differences of each region of the"three regions and two channels"included clean region,buffer region,contamination region,medical staff passage and patient passage within container type of biological isolation shelter under the negative pressure environment could meet the preseted requirements.The values of pressure differences at the outside of room of clean region,the toilet of clean region,the toilet of clean region of the second dressing room of the buffer region,the contamination region of the first dressing room of the buffer region,the toilet of contamination region and the outside of the room of contamination region were respectively 34.2,38.8,-8.0,-31.7,-15.1 and-44.6.The conditions of the pressure differences within each region of container,which dynamically met the requirements of Biosafety Level-Ⅲ(BSL-3)laboratory,were tested through the sensors,and intelligent display and control equipment that deployed inside of container.Conclusion:The stable negative pressure environment and intelligent regulation for pressure difference in each region of the container can take container to have more high biosafety characteristics,which can effectively ensure the safe transportation of whole region for patients with severe infectious diseases,and the transport and treatment under air freight condition.
