Inner tube of handheld fire extinguisher

Abstract

The invention discloses an inner tube of a handheld fire extinguisher. The inner tube comprises an upper tube and a lower tube, wherein the upper tube and the lower tube are arranged in the vertical direction; cooling agents are stored in the upper tube; initiating explosive materials are stored in the lower tube; the upper tube is glidingly arranged on the tube outer side wall of the lower tube in a sleeving way; an explosive discharging opening is formed in the tube side wall of the lower tube; a shielding part capable of shielding the explosive discharging opening or being far away from the explosive discharging opening is also arranged on the upper tube; the inner tube also comprises a protection sleeve; the protection sleeve is arranged on the tube outer side wall of the lower end of the upper tube and can slide along with the sliding of the upper tube; when the shielding part moves far away from the explosive discharging opening, the protection sleeve upwards slides and moves in the length direction of the lower tube; the lower end surface of the protection sleeve is higher than the upper end surface of the explosive discharging opening. The inner tube is provided with the explosive discharging opening, the explosion and detonation conditions of the inner tube due to too high pressure in the tube in the use process of the fire extinguisher are effectively avoided; meanwhile, the protection sleeve is arranged on the tube side wall of the upper tube, so that in the fire extinguishing process, the occurrence of the skin burnt injury phenomenon when operators touch the inner tube by careless is effectively prevented.

Description

technical field [0001] The invention relates to the technical field of fire protection, in particular to an inner cylinder of a hand-held fire extinguisher. Background technique [0002] Existing portable fire extinguishing devices are widely used, such as hand-held fire extinguishers, although the structure is small, it may cause explosion and deflagration due to excessive pressure accumulation, which will cause strong recoil of the device and injure the operator. In the process of deflagration and explosion, debris will be produced or the objects at the nozzle will break away from the body, causing accidental damage to the surrounding people and property. For example, a portable aerosol fire extinguishing device, when the powder column in the inner cylinder deflagrates, due to its small nozzle, hot aerosol gas will accumulate rapidly in the cylinder, and the pressure in the cylinder will rise sharply, so the heat energy is converted into huge kinetic energy, Acting on t...

AI Technical Summary

Problems solved by technology

[0002]Existing portable fire extinguishing devices are widely used, such as hand-held fire extinguishers, although the structure is small, but the pressure may be too large to cause explosion and deflagration. As a result, the device will generate strong recoil and injure the operator. At the same time, during the deflagration and explosion, debris or objects at the nozzle will be separated from the body, causing unexpected damage to the surrounding people and property.

For example, a portable aerosol fire extinguishing device, when the powder column in the inner cylinder deflagrates, due to its small nozzle, hot aerosol gas will accumulate rapidly in the cylinder, and the pressure in the cylinder will rise sharply, so the heat energy is converted into huge kinetic energy, Acting on the cylinder body, one part pushes the cylinder cover forward along the direction of the spout, while the other part acts on the cylinder body to generate recoil force in the opposite direction, which will cause serious personal injury to the operator. Due to its high momentum, the flushed cylinder cover will cause accidental injury to surrounding people or objects after detaching from the cylinder

At the same time, during the fire extinguishing process, the temperature of the inner cylinder of the fire extinguisher is relatively high, and when the operator accidentally touches the inner cylinder, it will cause skin burns and other situations.

Images