JP2003038668A - Method for confirming and testing sealing plate breakage of pressure powder fire extinguisher and device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily confirm whether or not a thin sealing plate 14 inside a sealing plate attaching tool 15 attached to the lower end of a fire extinguishing chemical discharge pipe 9 is broken in the manufacture stage or maintenance stage of pressure powder fire extinguisher. SOLUTION: Low pressure air not breaking the sealing plate 14 is fed from the tip part of the nozzle 4 of the pressure powder fire extinguisher into the extinguishing chemical discharge pipe 9 through a sholenoid valve 23 for a prescribed time and pressurization is performed. Then, after the lapse of a prescribed confirmation time, a pressure inside the fire extinguishing chemical discharge pipe 9 is detected by a pressure sensor 25, the output of the pressure sensor is inputted to an discrimination part 26 and compared with a set pressure value in the discrimination part 26, whether or not the detected pressure exceeds the set pressure value is discriminated and a result signal is outputted. A non- defective display part 27 inputs the acceptance output of the discrimination part 26 and displays acceptance. A defective display part 28 inputs the rejection output of the discrimination part 26 and displays rejection.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a confirmation test method and apparatus for confirming whether or not a sealing plate in a fire extinguishing agent discharge pipe incorporated in a pressurized powder fire extinguisher is broken.

[0002]

2. Description of the Related Art As shown in FIG. 4, a pressurized powder fire extinguisher is connected to a main body container 1 filled with a powder fire extinguishing agent A, a valve 2 attached to a base portion of an upper portion of the main body container 1, and a valve 2. Open the fire extinguisher hose 3, the nozzle 4 attached to the tip of the fire extinguisher hose 3, the pressurizing gas container 5 that is the pressure source that is stored in the main body container 1 and emits the powder fire extinguishing agent A, and the pressurizing gas container 5 Fixed lever 6 and movable lever 7 to be operated, gas introduction pipe 8 for introducing pressurized gas generated by operation of pressurizing gas container 5 into main body container 1, extinguishing agent for releasing powdered extinguishing agent A to extinguisher hose 3 It is composed of a pipe (siphon pipe) 9 and a safety stopper 10 provided on the fixed / movable levers 6 and 7.

The gas introduction pipe 8 is connected at its upper end to the pressurized gas container 5 through the valve 2 at the pressurized gas introduction port.
In addition, an appropriate number of gas release holes 11 are opened in the peripheral wall of the lower end portion, and a rubber peel pipe 12 is externally fitted to the lower end portion having the gas release hole 11 so as to cover the outside of the gas release hole 11. .

The fire extinguishing agent discharge pipe 9 is connected to the fire extinguisher hose 3 by fixing the fire extinguishing agent discharge port on the upper end thereof to the fire extinguisher hose 3, and at the lower end thereof a sealing plate mounting tool 1 having a sealing plate 14 built therein
5 is a sealing plate 14 which is detachably attached by plugging or screwing so as to seal the lower end of the fire extinguishing agent discharge pipe 9. The sealing plate 14 is made of a resin film such as a thin polyethylene film, and has such strength that it is ruptured for the first time by the internal pressure of the container body 1 when the inside of the container body 1 is pressurized to a predetermined pressure by a pressurized gas. . The purpose of the attachment of the sealing plate attachment 15 is to prevent moisture from entering the inside of the fire extinguishing agent discharge pipe 9 through the nozzle 4 at the tip of the fire extinguisher hose and solidifying the powder fire extinguishing agent A in the main body container 1. This is also for preventing an adverse effect that the powder fire extinguishing agent A in the main body container 1 gets into the lower end portion of the fire extinguishing agent emitting tube 9 and is hardened and clogged in the fire extinguishing agent emitting tube 9 when not in use.

In use, when the safety stopper 10 is pulled out and the fixed lever 6 and the movable lever 7 are operated to open the pressurized gas container 5, the pressurized gas is introduced into the main body container 1 through the gas introduction pipe 8. The powder fire extinguishing agent A is stirred while the main container 1 is pressurized. When the internal pressure of the main body container 1 reaches a constant pressure, the sealing plate 14 is broken and the powder fire extinguishing agent A is emitted from the nozzle 4 through the fire extinguishing agent discharge pipe 9 and the fire extinguisher hose 3.

[0006]

In the pressure type powder fire extinguisher described above, a vacuum filling method is used to fill the powder fire extinguishing agent A. According to the vacuum filling method, the filling time can be remarkably shortened by filling the powder fire extinguishing agent A after the main body container 1 is evacuated to a vacuum.
After the vacuum filling, the valve 2 including the pressurizing gas container 5, the fixed / movable levers 6 and 7, the gas introduction pipe 8 and the fire extinguishing agent discharge pipe 9 in advance is provided with the cap 13 on the mouthpiece of the container body 1. It is attached.

It is necessary to attach the valve 2 to the mouthpiece of the container body 1 within a few tens of seconds after the vacuum filling, when the powder fire extinguishing agent A is still in a soft state, generally, within 30 seconds. However, about 1 minute after the vacuum filling, the powder fire extinguishing agent A in the container body 1 tends to become slightly hard. Therefore, at this time, the valve 2 is attached to the container body 1.
When the lower end of the fire extinguishing agent discharge tube 9 is pushed into the powder fire extinguishing agent B layer while attaching the
The inner thin sealing plate 14 may be broken by the hardened powder fire extinguishing agent A. If the sealing plate 14 is left torn,
The original sealing plate function cannot be exerted. This problem can be said not only at the manufacturing stage of the pressurized powder fire extinguisher but also at the stage of refilling the powder fire extinguisher after the fire extinguisher has been used once or during regular inspection and maintenance.

[0008] Therefore, an object of the present invention is to provide a sealing plate rupture confirmation test method and apparatus for a pressure type powder fire extinguisher capable of easily confirming whether or not the sealing plate is ruptured at a manufacturing stage or a maintenance stage. is there.

[0009]

According to the test method for confirming the breakage of the sealing plate of the pressurized powder fire extinguisher of the present invention, the powder fire extinguishing agent is radiated into the main body container (1) filled with the powder fire extinguishing agent (A). A gas container (5) for pressurization, which is a pressure source, and a fire-extinguishing agent discharge pipe (9) for discharging the powdered fire-extinguishing agent to a fire-extinguisher hose (3) having a nozzle (4) at its tip are housed. A seal containing a sealing plate (14), which is ruptured by the internal pressure of the main body container (1) when the inside of the main body container (1) is pressurized by the pressurized gas from the pressurizing gas container (5), at the lower end portion of the drug discharge pipe. Of a pressurized powder fire extinguisher fitted with a plate mount (15),
A test method for confirming the presence or absence of breakage of the sealing plate, the fire extinguishing agent discharge pipe (9) extending from the tip of the nozzle (4).
Low-pressure air that does not break the sealing plate (14) is sent therein for a predetermined time to pressurize, and after a predetermined confirmation time has elapsed, the pressure in the fire extinguishing agent discharge pipe (9) is measured by a pressure sensor (2).
5), and the output of this pressure sensor is determined by the determination unit (26).
Is input to the judgment unit (26) and compared with the set pressure value,
It is determined whether the detected pressure exceeds or falls below the set pressure value, and it is determined that the detected pressure exceeds the set pressure value. A pass signal indicates that the detected pressure is set on the non-defective item display section (27). The rejection signal for determining that the pressure is lower than the pressure value is characterized by being input to the defective product display section (28).

A sealing plate rupture confirmation test device for a pressurized powder fire extinguisher according to the present invention is a pressure source for radiating the powder fire extinguisher inside a main body container (1) filled with the powder fire extinguisher (A). A pressure gas container (5) and a fire extinguishing agent discharge pipe (9) for discharging a powdered fire extinguishing agent to a fire extinguisher hose (3) having a nozzle (4) at its tip are housed, and the lower end of this fire extinguishing agent discharge tube is housed. In addition, there is a sealing plate attachment 815 having a sealing plate (14) which is broken by the internal pressure of the main body container (1) when the inside of the main body container (1) is pressurized by the pressurized gas from the pressurizing gas container (5). A test device for confirming the presence or absence of breakage of the sealing plate of the attached pressure type powder fire extinguisher, which is a tubular joint member (24) which is removably inserted into the tip of the nozzle (4). And an air hose (29) for this joint member
A compressed air supply source (21) for connecting and compressing low pressure air into the fire extinguishing agent discharge pipe (9) so that the sealing plate (14) is not broken, and the joint member and the compressed air supply. Solenoid valve (2
3), a pressure sensor (25) installed between the joint member and the solenoid valve, which detects the pressure in the fire extinguishing agent discharge pipe after a predetermined confirmation time has elapsed, and the output of this pressure sensor is input, A determination unit (26) that compares with the set pressure value, determines that the detected pressure is greater than or equal to the set pressure value, and determines that the detected pressure is less than the set pressure value.
The non-defective product display unit (27) that inputs the pass output of the determination unit (26) and displays the pass and the defective product display unit (28) that inputs the reject output of the determination unit (26) and displays the reject. When,
It is characterized by having. In this case, a pressure adjuster (22) for adjusting the air pressure supplied from the compressed air supply source to a low pressure such that the sealing plate (14) is not broken can be further provided.

[0011]

According to the test method and apparatus having the above-mentioned constitution, even when the extinguishing agent discharge pipe (9) is incorporated in the pressurized powder fire extinguisher, the sealing plate (14) of the extinguishing agent release pipe is broken. You can easily check whether or not you are present.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of a sealing plate breakage confirmation test device for a pressurized powder fire extinguisher according to the present invention, and FIG. 2 is a flowchart showing an operation flow of the sealing plate breakage confirmation test device of FIG. 3 is a cross-sectional view of a joint member and a nozzle of the sealing plate breakage confirmation test device of FIG. 1.

The pressure type powder fire extinguisher which is the subject of the seal plate breakage confirmation test of the present invention is the same as the standard type pressure type powder fire extinguisher shown in FIG. As shown in FIG. 1, the test device for checking the breaking of the sealing plate of the pressurized powder fire extinguisher according to the present invention includes a compressed air supply source 21 such as a compressor, a pressure regulator (pressure regulator) 22, a solenoid valve 23, and a joint member 24. , An air hose 29, a pressure sensor 25, a pass / fail judgment unit 26, a good product display unit 27, a defective product display unit 28, and the like.

As shown in FIG. 3, the joint member 24 is formed in a tubular shape and has a through passage 31. The air hose 2 is connected to the pressure regulator 22 via a solenoid valve 23.
It is attached to the tip of 9. The joint member 24 is removably and airtightly inserted into the diverging tube portion 4a at the tip of the nozzle 4 attached to the tip of the fire extinguisher hose 3 of the pressurized powder fire extinguisher shown in FIG. As described above, the outer periphery of the tip end portion is formed in a tapered shape that matches the internal shape of the divergent pipe portion 4a of the nozzle 4, and the outer circumference of the tapered taper end portion is different from the inner circumference of the divergent pipe portion 4a. An O-ring 30 for maintaining airtightness is attached.

The pressure regulator 22 lowers the air pressure supplied from the compressed air supply source 21 to such an extent that the sealing plate 14 of the fire extinguishing agent discharge pipe 9 of the pressurized powder fire extinguisher shown in FIG. ). For example, compressed air source 2
When the air pressure supplied from 1 is 0.7 MPa, 2
The pressure is adjusted to 0.025 MPa using the pressure regulator 22 on the table.

The solenoid valve 23 is interposed in a communication line between the pressure regulator 22 and the joint member 24, and opens and closes the communication line by operating a start button or a foot switch (not shown). Compressed air supply source 21
The low pressure air is sent to the inside of the fire extinguishing agent discharge pipe (9) through the pressure regulator 22 to control the pressurizing time. The pressure sensor 25 is intervened in the communication conduit between the solenoid valve 23 and the joint member 24 to detect the pressure in the fire extinguishing agent discharge pipe 9 after a predetermined confirmation time t has elapsed.

The pass / fail judgment unit 26 inputs the output of the pressure sensor 25, compares it with the set pressure value v, and judges that the detected pressure is higher than the set pressure value v, it is judged as pass, and the detected pressure is the set pressure value v. If it is lower than that, it is determined as a failure. The pass output of the determination unit 26 is input to the non-defective product display unit 27, and the non-defective product display unit 27 displays the pass by a clean lamp or the like. The reject output of the determination unit 26 is input to the defective product display unit 28, and the defective product display unit 2
At 8, a failure is displayed due to an alarm buzzer or red lamp flicker.

For example, the set pressure value v is 0.023.
The MPa and the confirmation time t are 2 seconds. These values were determined based on the following test preparation, test method and test results. 1) Preparation for test One small hole with a diameter of 0.2 mm on the sealing plate for test, 2
Prepare a total of three types of sealing plates, which are opened in three places. The pressure adjuster 22 is set to 0.025 MPa. The upper limit setting of the pressure sensor 25 is 0.025 MPa, and the lower limit setting is 0.020 MPa. 2) Test content The solenoid valve 23 is opened for 0.5 seconds and then closed. And
The time to reach the lower limit (0.020 MPa) is measured. 3) Test results ・ In the case of drilling at one location, the lower limit is reached in 3 seconds on average.・ In the case of drilling in 2 places, the lower limit is reached in 1 second on average.・ When drilling 3 holes, the lower limit is reached within 1 second.

FIG. 2 shows a flow of operation of the sealing plate breakage confirmation test device of the pressure type powder fire extinguisher having the above structure. In the confirmation test, first, the pressure regulator 22 sets a predetermined test pressure (0.0
25 MPa) is displayed (step S1). Next, in step S2, it is confirmed whether or not a pressure indicator (not shown) that displays the pressure value detected by the pressure sensor 25 displays "0". If "0" is not displayed, "0" is set (step S
3). When "0" is displayed, the process proceeds to step S4. In step S4, the joint member 24 is inserted into the nozzle 4 at the tip of the fire extinguisher hose 3 of the pressurized powder fire extinguisher in which the main body container 1 is vacuum-filled with the powder fire extinguishing agent A and the valve 2 is attached, and the air hose 29 is attached. Connecting.

After connecting the air hose 29, step S5
Then, the start button or foot switch of the solenoid valve 23 is turned on to open the solenoid valve 23. By this valve opening, low-pressure air (test pressure 0.025 MPa) is supplied into the fire extinguishing agent discharge pipe 9 for a predetermined time (0.5 seconds) so that the sealing plate 14 is not broken, and the valve is closed (step). S
6). After the valve is closed, the confirmation time (2 seconds) elapses in step S7.

After the confirmation time has elapsed, a pass / fail judgment is made in step S8. This determination is performed by the determination unit 26 using the pressure sensor 25.
Is inputted and compared with a set pressure value (0.023 MPa), and if the detected pressure is equal to or higher than the set pressure value, it is judged as pass, and if the detected pressure is lower than the set pressure value, it is judged as fail. The pass output of the determination unit 26 is input to the non-defective product display unit 27, and the non-defective product display unit 27 displays the pass with a clean lamp or the like (step S9). The non-defective product is moved to the next process (step S10). The reject output of the determination unit 26 is the defective product display unit 2.
8 is input to the defective product display unit 28, and a failure display is displayed by an alarm buzzer, a red lamp flicker, or the like (step S1).
1). Defective products are disassembled and checked, and if the sealing plate 14 is broken, the sealing plate attachment 15 is replaced (step S).
12).

[0022]

According to the present invention, it is easy to determine whether or not the sealing plate of the sealing plate attachment attached to the lower end of the fire extinguishing agent discharge pipe is broken at the manufacturing stage or the maintenance stage of the pressurized powder fire extinguisher. There is an effect that can be confirmed.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a sealing plate breakage confirmation test apparatus for a pressure type powder fire extinguisher.

FIG. 2 is a flowchart showing an operation flow of the sealing plate tearing confirmation test device of FIG.

FIG. 3 is a cross-sectional view of a joint member and a nozzle of the sealing plate breakage confirmation test device of FIG.

FIG. 4 is a vertical cross-sectional front view of a pressurized powder fire extinguisher.

[Explanation of symbols]

1 body container 3 fire extinguisher hose 4 nozzles 5 Pressurizing gas container 8 gas introduction pipes 9 Fire extinguishing agent discharge tube 14 Envelope 15 Seal plate attachment 21 Compressed air supply source 22 Pressure regulator 23 Solenoid valve 24 Joint member 25 Pressure sensor 26 Judgment section 27 Good product display 28 Defective product display 29 air hose

Claims (3)

[Claims] 1. A powder fire extinguishing agent is discharged into a main body container filled with the powder fire extinguishing agent into a pressure gas container which is a pressure source for radiating the powder fire extinguishing agent and a fire extinguisher hose having a nozzle at the tip. A fire extinguishing agent discharge pipe is housed, and a sealing plate that is broken by the internal pressure of the main body container when the inside of the main body container is pressurized by the pressurized gas from the pressurizing gas container is built in at the lower end of this fire extinguishing agent discharge pipe. A test method for confirming the presence or absence of breakage of the sealing plate of the pressurized powder fire extinguisher to which the sealing plate fixture is attached, wherein the sealing plate is broken from the tip of the nozzle into the fire extinguishing agent discharge pipe. Low pressure air is sent for a predetermined time to pressurize, and then the pressure in the fire extinguishing agent discharge pipe is detected by a pressure sensor after a lapse of a predetermined confirmation time, and the output of this pressure sensor is input to the determination unit and the determination unit And set pressure value and ratio Then, it is determined whether the detected pressure exceeds or falls below the set pressure value, and it is determined that the detected pressure exceeds the set pressure value. Rejection signal to determine that it has fallen further is characterized in that it is respectively input to the defective product display unit,
Test method for rupture of sealing plate of pressurized powder fire extinguisher. 2. The powder fire extinguishing agent is discharged into a main body container filled with the powder fire extinguishing agent, to a pressurizing gas container which is a pressure source for radiating the powder fire extinguishing agent, and a fire extinguisher hose having a nozzle at its tip. A fire extinguishing agent discharge pipe is housed, and a sealing plate that is broken by the internal pressure of the main body container when the inside of the main body container is pressurized by the pressurized gas from the pressurizing gas container is built in at the lower end of this fire extinguishing agent discharge pipe. Is a test device for confirming the presence or absence of breakage of the sealing plate of the pressure type powder fire extinguisher to which the sealing plate mounting tool is attached, which is a tubular joint member that is removably inserted into the tip portion of the nozzle. A compressed air supply source that is connected to this joint member through an air hose and sends low pressure air into the fire extinguishing agent discharge pipe to pressurize low pressure air that does not break the sealing plate; and the joint member and the compressed air supply source. Communication pipe A solenoid valve that is interposed in the path, a pressure sensor that is installed between the joint member and the solenoid valve, and that detects the pressure in the fire extinguishing agent discharge pipe after a predetermined confirmation time has passed, and the output of this pressure sensor is input. And compare it with the set pressure value,
When the detected pressure is equal to or higher than the set pressure value, it is determined as pass, and when the detected pressure is lower than the set pressure value, the determination unit determines that it is unacceptable, and the pass output of the determination unit is input and the pass display is displayed. And a defective product display unit for inputting a reject output of the determination unit and displaying a reject result. A device for checking breakage of a sealing plate of a pressurized powder fire extinguisher, comprising: 3. A seal plate breakage confirmation of a pressurized powder fire extinguisher according to claim 2, further comprising a pressure regulator for adjusting the air pressure supplied from the compressed air supply source to a low pressure that does not break the seal plate. Test equipment.