A fire extinguisher inner cylinder with a blast vent

Abstract

The invention discloses An inner cylinder of a fire extinguisher with an explosion vent, the inner cylinder includes an upper cylinder which stores coolant and a lower cylinder which stores fire extinguishing agent arranged along the vertical direction, and the upper cylinder is slidably sleeved on the outer wall of the lower cylinder , the side wall of the lower cylinder is provided with an explosion vent, and the upper cylinder is provided with a shielding part that can be shielded from the explosion vent or away from the explosion vent. The upper cylinder has a static state and an explosion vent state, and the inner cylinder also includes a The control mechanism for switching the working state of the upper barrel. The inner cylinder of the fire extinguisher of the present invention effectively prevents the explosion and deflagration of the inner cylinder due to excessive pressure in the cylinder when the fire extinguisher is in use by opening the explosion vent on the side wall of the lower cylinder. It is installed on the lower barrel so that during the explosion venting, the coolant will not overflow from the explosion venting port and affect the explosion venting safety.

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 cylinder....

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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