Fire extinguisher inner barrel with explosion venting opening

Abstract

The invention discloses a fire extinguisher inner barrel with an explosion venting opening. The inner barrel comprises an upper barrel and a lower barrel, wherein the upper barrel is arranged on the vertical direction and stores a coolant, and the lower barrel stores a fire extinguishing medium; the upper barrel is sleeved on the lateral wall of the lower barrel in a sliding manner, and the explosion venting opening is formed in the side wall of the lower barrel; a sheltering part which can be sheltered on the explosion venting opening or far away from the explosion venting opening is arranged on the upper barrel, and the upper barrel has a stationary state and an explosion venting state. The inner barrel further comprises a control mechanism used for switching the working state of the upper barrel. As the explosion venting opening is formed in the side wall of the lower barrel, the condition that the inner barrel is exploded and deflagrated due to too high pressure in the barrel is effectively prevented when a fire extinguisher is used. Meanwhile, the explosion venting opening is formed in the lower barrel, so that the coolant cannot overflow from the explosion venting opening to influence the explosion venting safety during explosion venting.

Description

technical field [0001] The invention relates to the technical field of fire protection, in particular to a fire extinguisher inner cylinder with a blast vent. Background technique [0002] Existing portable fire extinguishing devices are widely used. Although the portable fire extinguishing device has a small structure, it may cause explosion and deflagration due to excessive pressure accumulation, which will cause the device to generate strong recoil and injure the operator. At the same time, during the deflagration and explosion, fragments or objects at the nozzle will be separated from the body, causing unexpected damage to the surrounding people and property. For example, in a portable aerosol fire extinguisher, when the powder column in the inner cylinder accidentally deflagrates, the hot aerosol will accumulate rapidly in the cylinder due to its small nozzle, and the pressure in the cylinder will rise sharply, forming a certain destructive force to act on the cylinde...

AI Technical Summary

Problems solved by technology

[0002]Existing portable fire extinguishing devices are widely used. Although the structure of portable fire extinguishing devices is small, it may cause explosion and deflagration due to excessive pressure accumulation, thus It will cause the device to generate strong recoil and injure the operator. At the same time, during the deflagration and explosion, fragments or objects at the nozzle will be separated from the body, causing unexpected damage to the surrounding people and property.

For example, in a portable aerosol fire extinguisher, when the powder column in the inner cylinder accidentally deflagrates, the hot aerosol will accumulate rapidly in the cylinder due to its small nozzle, and the pressure in the cylinder will rise sharply, forming a certain destructive force to act on the cylinder. On the top, one part will push the cylinder cover open and spray forward along the direction of the nozzle, and the other part will act on the cylinder body to generate recoil force in the opposite direction, which will cause serious personal injury when it acts on the user. Due to its high momentum, the flushed cylinder cover will cause accidental injury to surrounding people or objects after detaching from the cylinder

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