Gas supply performance of first-stage pressure reducer of self-contained diving apparatus with different structures
10.3969/j.issn.1009-0754.2023.11.001
- VernacularTitle:不同结构形式自携式潜水呼吸器一级减压器供气性能研究
- Author:
Shuai DI
1
;
Jinghua GU
;
Chumeng LIU
;
Ruihao LUO
Author Information
1. 200433 上海,海军军医大学海军特色医学中心
- Keywords:
Diving apparatus;
First-stage pressure reducer;
Balanced piston;
Balanced diaphragm;
Gas supply flow rate
- From:
Journal of Navy Medicine
2023;44(11):1103-1106
- CountryChina
- Language:Chinese
-
Abstract:
Objective To quantitatively compare the gas supply performance between balanced piston and balanced diaphragm first-stage pressure reducers,so as to provide reference data for establishing a diving apparatus evaluation system.Methods The gas supply performance test data of the type 15 first-stage pressure reducer under different input pressures were obtained through the unmanned performance test.Dynamic pressure drop,dynamic and static pressure difference,and maximum gas-supply flow rate were compared.Results There were statistical differences in dynamic pressure drop,dynamic and static pressure difference,and maximum gas supply flow rate between the 2 kinds of first-stage pressure reducers.The maximum supply flow rate linear regression model of balanced piston first-stage pressure reducers could explain 92.3%of the changes of the maximum supply flow.Conclusion The balanced piston first-stage pressure reducer is superior to the balanced diaphragm first-stage pressure reducer in dynamic pressure drop,dynamic and static pressure difference,and maximum air supply flow rate,but the internal isolation of the balanced diaphragm first-stage pressure reducer makes it more suitable for use in cold or dirty waters.
