Fold-back ventilating device of collective escaping chamber

Abstract

The invention discloses a fold-back ventilating device of a collective escaping chamber. The fold-back ventilating device comprises an air inlet system and an air outlet system which are connected with an escaping chamber body and have a same structure, wherein the air inlet system comprises a connecting pipe; one end of the connecting pipe stretches into the chamber, and the other end of the connecting pipe is communicated with a closed conversion cavity outside the chamber; a screw plug is arranged at the end of the connecting pipe in the chamber; the conversion cavity is communicated with a horizontal ventilating duct; the ventilating duct and the conversion cavity are connected in a sealed and rotatable mode, and a radial ventilating hole is formed in the other end of the ventilating duct; a waterproof cover sleeves the end of the ventilating duct and covers the radial ventilating hole; a piston rod of a vertical cylinder is hinged with the ventilating duct; a cylinder body is hinged with a lower mounting seat; the lower mounting seat is fixedly arranged on the escaping chamber body; the conversion cavity is fixedly arranged on the lower mounting seat; when the escaping chamber floats to the water surface and needs ventilation, the screw plug in the air inlet system and the air outlet system is removed, and the connecting pipe in the chamber of the air outlet system and an air outlet pipe of an air blower in the chamber are connected with each other. Ventilation inside and outside the chamber can be realized under the condition that a chamber cover is not opened, and the operation is stable and reliable.

Description

technical field [0001] The invention relates to deep-sea escape equipment, in particular to a collective escape cabin of a deep-sea space station, and in particular to a ventilation device for realizing air circulation inside and outside the cabin after the collective escape cabin floats to the water surface. Background technique [0002] As an independent and self-contained escape device, the collective escape cabin can effectively improve the self-rescue ability of the wrecked crew and ensure the safety of the personnel during the escape process, which is superior to any previous escape equipment. [0003] Due to the small displacement and low freeboard of the escape cabin, after the escape cabin was released and floated to the water surface, the escape cabin was in a state of waiting for rescue on the water surface. In order to prevent waves from entering the cabin, the upper hatch cover could not be opened for natural ventilation. , in order to prolong the waiting time a...

AI Technical Summary

Problems solved by technology

[0004] At present, domestic research on deep-sea escape equipment mostly focuses on the research and development of the overall structural form of the escape cabin, but there is very little research on the ventilation device, such as the "sea non-reversible escape cabin" disclosed in Chinese patent ZL 200420013990.4. The air exchange device above the sea level is equipped with a threaded inner casing and an outer casing on the top of the cabin. By manually rotating the inner casing, the inner casing can be raised or lowered relative to the outer casing on the top of the cabin. Therefore, the air exchange hole on the inner casing is exposed to the water surface, thereby realizing air exchange. However, this air exchange device has the following defects: First, the manual rotation directly drives the air exchange hole to rise, and the output load is small, so the air exchange hole rises. The height is very limited; second, the inner casing and the outer casing rotate relatively, so a dynamic sealing structure is required for sealing, and the dynamic sealing structure has the problems of high machining accuracy and poor sealing effect. Under the underwater working environment, the use of The escape cabin with dynamic sealing structure has poor working reliability and is inconvenient to overhaul

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