| 摘要 |
FIELD: ventilation.SUBSTANCE: room life saving device protecting from polluted outer air contains the distributing device, a loaded high-pressure vessel with the charging valve. The charging valve is interconnected with the main supply line. The supply line is fitted with the starting valve and the flow control throttle. The main supply line is interconnected with the room with the additional supply line which contains the starting valve and the flow control throttle. The distributing device is designed with a possibility of actuation of the starting valve of the main supply line and the starting valve of the next additional supply line. The common air flow rate section on the main supply line is fitted with series installed air pressure control unit interconnected with the distributing device, and a measuring throttle. The orifice size of the throttle exceeds the sum of sizes of orifices of flow control throttles of the main and each additional line. The device may contain additional throttles installed upstream and downstream of flow control and measuring throttles. The second version of the device differs by containing of, at least, one additional loaded high-pressure vessel with the charging valve interconnected via the starting valve with the main supply line upstream the flow control throttle.EFFECT: device versions provide maintaining of air flow rate within allowable limits, with automatic connection of additional vessel and additional gas supply lines.14 cl, 4 dwg |
