Piston type anti-blast-wave valve for ventilation opening of protective engineering

Abstract

The invention discloses a piston type anti-blast-wave valve for a ventilation opening of protective engineering. The piston type anti-blast-wave valve comprises a door body, a door frame, a hinge, a lock and piston units, the door body is connected to the door frame through the hinge and is locked through the lock, the piston units are arranged on the door body at intervals, the door body comprises a door leaf base and a front panel, the front panel is arranged on the door leaf base, first ventilation holes are formed in the front panel at intervals, a spring supporting base is arranged on the door leaf base and is connected to the inner side surface of the front panel, the piston units are arranged on the front panel, and the inner ends of the piston units extend into the first ventilation holes and are connected to the spring supporting base. According to the piston type anti-blast-wave valve, the piston units are arranged as a closing component for bearing blast wave pressure and conducts linear motion inwards under the action of blast wave overpressure to close the valve, the beneficial effects of small ventilation resistance, high wave absorbing efficiency, wide resistance range and high environment applicability can be achieved, the impact of blast waves on the door leaf base can be effectively reduced; and a safe and reliable protection function is achieved.

Description

technical field [0001] The invention relates to the technical field of protective engineering, in particular to a piston-type explosion-proof wave valve for a protective engineering vent. Background technique [0002] The vents of protective engineering are the necessary infrastructure to ensure the normal working environment inside the project. During the use of the protective engineering, it is necessary to continuously exchange air through the vents and the outside of the project. To ensure the safety, explosion-proof wave valves must be installed at the vents. The ventilation hole of the explosion-proof wave valve is usually open, which can ensure the ventilation of the project and the outside. Only when there is an explosion shock wave, the movable parts of the valve will be closed quickly, and the ventilation hole of the valve will be closed to block the passage of the shock wave to the interior of the project. , to achieve the purpose of reducing the shock wave. Whe...

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Problems solved by technology

[0003] The existing hose-type valve has high wave absorption efficiency, but its resistance is low, the life of the hose is short, and it cannot be used in the smoke exhaust port of the power station.

The wave absorption efficiency of the swing valve and the sleeve valve is low, and a large diffusion chamber needs to be installed behind the valve, which takes up a lot of civil engineering space

The valve that can be closed in advance can block all the shock waves outside the project, but its structure is complex, the reliability is poor, the valve reset takes a long time, and it cannot effectively protect against continuous blows

The revolving valve can block all the shock waves outside the project, but usually the ventilation resistance is large, the structure is complex, and it is difficult to manufacture

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