Negative pressure bidirectional detonation flame-proof device

Abstract

The invention discloses a negative pressure bidirectional detonation flame-proof device and relates to the field of anti-detonation equipment. The negative pressure bidirectional detonation flame-proof device comprises a negative pressure cavity pipe and a bidirectional flame-proof valve arranged inside a negative pressure cavity; the bidirectional flame-proof valve comprises a valve body internally provided with a valve element containing cavity and a valve element arranged inside the valve element containing cavity; the two ends of the valve body are provided with a first pipeline and a second pipeline which penetrate out of the negative pressure cavity pipe and communicate with the outside; the negative pressure cavity pipe is in sealed connection with the outer walls of the first pipeline and the second pipeline to form the negative pressure cavity; the walls of the first pipeline and the second pipeline are provided with brittle annular rupture disks; and the annular rupture disksare arranged inside the negative pressure cavity. The negative pressure bidirectional detonation flame-proof device has the beneficial effects that the negative pressure cavity can extinguish all ormost of flame, the requirements for anti-detonation intensity of the valve element, the valve body and the pipelines are reduced, the production cost of enterprises is reduced, and the efficacy and safety of the flame-proof device are improved. A computer can detect the pressure inside the negative pressure cavity in real time, so that the negative pressure cavity always keeps the needed negativepressure intensity.

Description

technical field [0001] The invention relates to the field of explosion-proof equipment, in particular to a negative pressure two-way detonation explosion-proof device. Background technique [0002] The explosion-proof valve is used to cut off the flame propagation caused by the explosion between the interconnected containers. In the early stage of the explosion, the propagation speed of the explosion flame is only a few meters to tens of meters per second, and no large impact pressure will be generated on the target. In the prior art, the two-way explosion-proof valve can basically realize the isolation of the explosion in the early stage of the explosion, but in the connecting pipeline, due to the wall effect, turbulence effect and instability of the combustion front, the flame in the pipeline is easy to The phenomenon of acceleration occurs, and the transition from deflagration to detonation is realized. The speed jumps to the order of several kilometers per second, and t...

AI Technical Summary

Problems solved by technology

In the prior art, the two-way explosion-proof valve can basically realize the isolation of the explosion in the early stage of the explosion, but in the connecting pipeline, due to the wall effect, turbulence effect and instability of the combustion front, the flame in the pipeline is easy to The phenomenon of acceleration occurs, and the transition from deflagration to detonation is realized. The speed jumps to the order of several kilometers per second, and the pressure of the detonation wave front is intermittently increased. For example, the stable propagation speed of the stoichiometric hydrogen-oxygen mixture can reach At 1993 meters per second, the detonation pressure can even reach 31.47 times the initial pressure. At this time, the fast-propagating detonation front in the pipeline interacts with the traditional flameproof valve core and reflects, and the pressure of the reflected wave can reach the detonation pressure. Several times of the incident wave greatly increases the explosion pressure in the explosion-proof cavity and pipeline, which will cause serious damage to the traditional explosion-proof valve, resulting in poor explosion-proof effect

Its technical defect lies in: the explosion-proof effect in the connecting pipeline is poor, and it is impossible to remotely monitor whether the explosion-proof valve is in normal working condition remotely and in real time, and there is a large potential safety hazard

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