TWI551324B - Fire extinguisher replacement method - Google Patents

Description

Fire extinguisher replacement method

The present invention relates to a fire extinguisher, and more particularly to a method of replacing a chemical for a fire extinguisher.

The fire extinguisher mainly comprises a steel cylinder and a nozzle. The cylinder is filled with a medicament and a high-pressure gas. The medicament is a substance for extinguishing fire. The medicament may be a fine powder, water or foam which is dry and easy to flow, and the high-pressure gas is used for propelling the medicament. The nozzle is disposed at the top of the cylinder for controlling the discharge of the medicament. The nozzle is mainly composed of a nozzle, a control valve and a conduit, and the conduit is disposed inside the cylinder, the conduit top Engaged with the control valve, the catheter extends into the medicament and is adjacent to the bottom end of the interior of the cylinder. When the control valve is operated to communicate the conduit with the nozzle, the high pressure gas in the cylinder forces the medicament into the conduit and passes through the conduit The conduit, the control valve, and the nozzle are ejected outward.

During the effective use of the drug, the fire extinguisher must be regularly changed, and the cylinder and nozzle should be inspected and repaired by the timing of the dressing change. The method of replacing a chemical for a fire extinguisher includes the steps described below:

1. Discharge: Operate the nozzle to spray out the agent in the fire extinguisher, and thereby release the high pressure inside the cylinder; then remove the nozzle from the top of the cylinder to further remove the residual agent in the cylinder.

2. Filling the pharmacy: Fill the cylinders that have been approved for repair, and lock the nozzles to the mouth of the cylinder.

3. Irrigation body: The cylinder is placed horizontally and positioned firmly, and then the inside of the cylinder is filled with the inflation body through the nozzle, and the internal pressure of the cylinder reaches the required high pressure value to complete the replacement of the extinguisher.

The method of replacing the fire extinguisher is not limited to the above steps, but also includes several The steps of the detection and testing of the test items, the maintenance of the cylinders and the nozzles, and the like are well-known steps of the present invention and are not necessarily related to the technical features of the present invention and will not be described in detail.

In the conventional method for replacing a fire extinguisher, when the cylinder is filled with an inflator after filling the medicament, since the cylinder is placed horizontally, the nozzle of the nozzle is buried in the medicament, and the medicament enters the inside of the conduit, and the gas enters the cylinder through the conduit. In the internal space, since the end nozzle of the end of the conduit adjacent to the cylinder is inside the medicament, the flow pressure of the gas easily causes the connection between the conduit and the control valve of the nozzle to be detached. This phenomenon is generally called "burst". It is customary to place the cylinder horizontally to fill the inflatable body. The rate of "burst" is about 18%. After the "burst" occurs, the high pressure gas will pass directly through the control when the fire extinguisher is used. The valve escapes outward and cannot push the medicament out through the conduit and the control valve. Therefore, once the "explosion" occurs in the inflation body, the nozzle must be unloaded from the cylinder, the conduit and the control valve are reconnected, and then the nozzle is re-connected. After reinstalling, re-execute the filling step.

In order to improve the conventional chemical replacement method of the fire extinguisher, the step of performing the inflation step The "burst" phenomenon, the main object of the present invention is to provide a method for replacing a fire extinguisher by preventing the "burst" from occurring by the step of inflating the fire extinguisher in an inverted state.

In order to meet the intended purpose, the present invention relates to a method for replacing a chemical for a fire extinguisher, comprising the steps of: discharging a nozzle of a fire extinguisher, spraying a chemical in the cylinder, and releasing a high pressure inside the cylinder; and then discharging the nozzle from the cylinder to remove the residue. The medicine in the cylinder; filling the medicine: filling the cylinder with the medicine and installing the nozzle on the bottle mouth; inverting the fire extinguisher: inverting and positioning the fire extinguisher so that the nozzle is located below the cylinder, the bottom of the cylinder is upward, and is filled in The inside of the cylinder accumulates in the adjacent nozzle of the cylinder. The inside of the cylinder forms a space for the gas to be filled in the bottom of the bottle. The nozzle of the nozzle extends through the medicament and extends into the space. The inflator is kept in an inverted position in the extinguisher. In the state, the inside of the cylinder is filled with an inflator through the nozzle, and the gas enters the space through the conduit, so that the internal pressure of the cylinder reaches the rated high pressure, and the replacement of the medicament of the fire extinguisher is completed.

By inflating the inside of the cylinder by the fire extinguisher in an inverted state, the flow of the gas is smooth, and the occurrence of the "burst" phenomenon is prevented.

(10)‧‧‧Fire extinguishers

(12)‧‧‧Spray

(122)‧‧‧ catheter

(14)‧‧‧Cylinders

(142) ‧ ‧ bottle bottom

(144) ‧‧‧ Space

(16)‧‧‧ Pharmacy

The first figure is a flow chart of an embodiment of the present invention.

The second figure is a schematic diagram of the inverted positioning state of the fire extinguisher of the embodiment of the present invention.

As shown in the first figure, the embodiment of the method for replacing a chemical of the fire extinguisher of the present invention comprises the following steps: discharging the nozzle of the fire extinguisher, spraying the medicine in the cylinder, thereby releasing the high pressure inside the cylinder; and then unloading the nozzle From the cylinder, the opening of the cylinder is opened, and the medicament remaining in the cylinder is further removed.

Filling agent: Fill the cylinder that has been approved for repair and install the nozzle on the bottle mouth of the cylinder.

Inverted fire extinguisher: As shown in the second figure, the fire extinguisher (10) is vertically inverted and positioned so that the spray head (12) is located below the cylinder (14), while the bottom (142) of the cylinder (14) faces upwards due to the fire extinguisher (10) In an inverted state, the medicament (16) filled in the inside of the cylinder (14) is accumulated by gravity and accumulates in the inner adjacent nozzle (12) of the cylinder (14), and the inside of the cylinder (14) is adjacent to the bottom of the bottle ( A space (144) is formed at 142) for receiving gas, and a conduit (122) of the showerhead (12) extends through the medicament (16) to the space (144).

Irrigation body: In the state where the fire extinguisher (10) is kept in an inverted position, the inside of the cylinder (14) is filled with an inflator through the nozzle (12), and the gas enters the space (144) through the conduit (122), and the inside of the cylinder (14) When the air pressure reaches the rated high pressure, the reagent replacement of the fire extinguisher is completed.

In the aforementioned step of filling the inflatable body, the fire extinguisher (10) is positioned upside down, and the conduit (122) extends through the medicament (16) to the space (144) of the adjacent bottle bottom (142), and enters the space when the gas passes through the conduit (122) ( At 144), the flow of the gas is smooth, so that the connection between the conduit (122) and the control valve (not shown) of the spray head (12) is not separated, and the "burst" phenomenon can be effectively prevented.

Claims (1)

A method for replacing a chemical for a fire extinguisher comprises the following steps: discharging a nozzle: operating a nozzle of the fire extinguisher, spraying the medicine in the cylinder, and releasing the high pressure inside the cylinder; then discharging the nozzle from the cylinder to remove the medicament remaining in the cylinder; filling the medicament : Fill the cylinder with the pharmacy and install the nozzle on the bottle mouth of the cylinder; Invert the fire extinguisher: Invert the fire extinguisher and position it so that the nozzle is located below the cylinder, the bottom of the cylinder is facing up, and the medicine filled inside the cylinder accumulates inside the cylinder At the adjacent nozzle, a space for the gas to be filled is formed at the bottom of the cylinder, and the conduit of the nozzle extends through the medicament to extend into the space; the inflatable body: the cylinder is passed through the nozzle while the fire extinguisher is kept in an inverted position The inside of the inflatable body, the gas enters the space through the conduit, so that the internal pressure of the cylinder reaches the rated high pressure, and the replacement of the medicament of the fire extinguisher is completed.