JP5480021B2 - Oxygen index measuring device - Google Patents

Oxygen index measuring device Download PDF

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JP5480021B2
JP5480021B2 JP2010131575A JP2010131575A JP5480021B2 JP 5480021 B2 JP5480021 B2 JP 5480021B2 JP 2010131575 A JP2010131575 A JP 2010131575A JP 2010131575 A JP2010131575 A JP 2010131575A JP 5480021 B2 JP5480021 B2 JP 5480021B2
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oxygen
glass column
flow path
test piece
index measuring
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JP2011257253A (en
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毅 松原
功紀 小野
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株式会社東洋精機製作所
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Description

本発明は、規定の条件下で、垂直の小試験片が燃焼を維持する、酸素と窒素の混合ガス中の最小酸素濃度を測定する酸素指数測定装置に関する。   The present invention relates to an oxygen index measuring apparatus for measuring a minimum oxygen concentration in a mixed gas of oxygen and nitrogen, in which a small vertical test piece maintains combustion under specified conditions.

23℃±2℃の環境下での室温における酸素指数測定装置及び25℃〜150℃の高温における酸素指数測定装置は従来技術として公知である。
これら酸素指数測定装置は、制御装置と、試験片を収めて燃焼させるガラスカラムと、PC操作画面を有するディスプレイとからなっている。
An oxygen index measuring device at room temperature in an environment of 23 ° C. ± 2 ° C. and an oxygen index measuring device at a high temperature of 25 ° C. to 150 ° C. are known in the prior art.
These oxygen index measuring devices are composed of a control device, a glass column for storing and burning a test piece, and a display having a PC operation screen.

公知の室温における酸素指数測定装置は、上記ガラスカラムを上下分離可能なものを使用し、試験片が規定以上の時間又は長さが燃焼した場合、従来ではガラスカラムの上部を外し、人が息を吹きかけて消火していた。
しかし、試験中の酸素濃度が空気中より低い場合、上部のガラスカラムを外すと、逆に激しく燃焼してしまい危険であるという課題があった。
A known oxygen index measuring device at room temperature uses a device that can separate the glass column above and below, and when the test piece burns for longer than specified time or length, conventionally, the upper part of the glass column is removed and a person breathes. The fire was extinguished.
However, when the oxygen concentration during the test is lower than that in the air, if the upper glass column is removed, there is a problem that it is dangerously burnt.

一方、高温における酸素指数測定装置では、ガラスカラムにヒータ線が巻き付けてあるため、上下分離や簡単に取り外すことは構造上及び安全上不可能である。従って、試験片が燃え尽きるまで待つしかなく、無駄にガスを消費してしまい不経済であるという課題があった。   On the other hand, in the oxygen index measuring device at high temperature, since the heater wire is wound around the glass column, it is impossible in terms of structure and safety to separate the top and bottom and to remove them easily. Therefore, there is a problem that it is uneconomical because gas must be consumed unnecessarily without waiting for the test piece to burn out.

本発明は、上記課題に鑑み、室温における酸素指数測定装置において、ガラスカラムの上部を外すことなく、また、高温における酸素指数測定装置において、経済的に試験片の燃焼を消火することを可能にすることを目的とする。   In view of the above problems, the present invention makes it possible to extinguish the combustion of a test piece economically in an oxygen index measuring device at room temperature without removing the upper portion of the glass column and in an oxygen index measuring device at high temperature. The purpose is to do.

そのために、本発明の室温における酸素指数測定装置は、ガラスカラムへの酸素流路と窒素流路を含む制御装置と、試験片を収めて燃焼させるガラスカラムと、PC操作画面を有するディスプレイとからなり、上記ディスプレイ上に消火ボタンを設け、この消火ボタンの操作により酸素流路の流量コントローラに出力0%の制御信号を送り試験片の燃焼を消火することを特徴とする。   For this purpose, the oxygen index measuring device at room temperature according to the present invention comprises a control device including an oxygen flow path and a nitrogen flow path to a glass column, a glass column for storing a test piece and burning, and a display having a PC operation screen. Thus, a fire extinguishing button is provided on the display, and the operation of the fire extinguishing button sends a control signal of 0% output to the flow rate controller of the oxygen flow path to extinguish the combustion of the test piece.

一方、本発明の高温における酸素指数測定装置は、ガラスカラムへの酸素流路と窒素流路と空気流路を含む制御装置と、試験片を収めて燃焼させるガラスカラムと、PC操作画面を有するディスプレイとからなり、上記ディスプレイ上に消火ボタンを設け、この消火ボタンの操作により、空気の流量コントローラに酸素流路の流量コントローラと同じ出力の制御信号を送ると同時に、酸素の流量コントローラに出力0%の制御信号を送ることで、空気と窒素を混合してガラスカラム内の総流量を維持し、それにより温度変化なく試験片の燃焼を消火することを特徴とする。   On the other hand, the oxygen index measurement device at high temperature of the present invention has a control device including an oxygen flow path, a nitrogen flow path, and an air flow path to a glass column, a glass column for storing and burning a test piece, and a PC operation screen. A fire extinguishing button is provided on the display, and by operating the fire extinguishing button, a control signal having the same output as the oxygen flow rate controller is sent to the air flow rate controller, and at the same time, an output 0 is output to the oxygen flow rate controller. % Control signal is sent to mix air and nitrogen to maintain the total flow rate in the glass column, thereby extinguishing the burning of the specimen without temperature change.

室温における酸素指数測定装置にあっては、ガラスカラムの上部を外す必要もなく、また、空気中より低い酸素濃度での試験でも安全な消火ができる効果がある。
また、高温における酸素濃度測定装置では、試験片が燃え尽きるまで待つ必要なく、ガスを無駄に消費してしまう不経済をなくすことができ、しかもガラスカラム内の温度変化なく試験片を消火できるので、次の試験がスムースに行える効果がある。
In the oxygen index measuring device at room temperature, it is not necessary to remove the upper part of the glass column, and there is an effect that a safe fire extinguishing can be achieved even in a test at a lower oxygen concentration than in air.
In addition, in the oxygen concentration measurement device at high temperature, it is not necessary to wait until the test piece burns out, the wasteful consumption of gas can be eliminated, and the test piece can be extinguished without temperature change in the glass column. There is an effect that the next test can be performed smoothly.

酸素指数測定装置の外観図である。It is an external view of an oxygen index measuring device. 本発明の室温における酸素指数測定装置のブロック図である。It is a block diagram of the oxygen index measuring device at room temperature of the present invention. 本発明の高温における酸素指数測定装置のブロック図である。It is a block diagram of the oxygen index measurement apparatus in the high temperature of this invention.

図1に本発明の酸素指数測定装置の外観図を示してあり、図中符号1が試験片を燃焼するガラスカラムであり、符号2がガラスカラム1への酸素流路及び窒素流路を含む制御装置であり、符号3がPC操作画面を有するディスプレイである。   FIG. 1 shows an external view of an oxygen index measuring apparatus according to the present invention, in which reference numeral 1 is a glass column for burning a test piece, and reference numeral 2 includes an oxygen channel and a nitrogen channel to the glass column 1. Reference numeral 3 denotes a control device, which is a display having a PC operation screen.

図2に本発明の室温における酸素指数測定装置の実施例を示してある。ガラスカラム1への酸素流路4と窒素流路5が設けられ、これら酸素流路4と窒素流路5が合流してガラスカラム1へ接続してある。これら酸素流路4と窒素流路5には共に開閉弁6、フィルタ7、流量コントローラ8及び電磁弁9が設けてある。一方ディスプレイ3は変換器10を介して酸素流路4と窒素流路5のそれぞれの流量コントローラ8に接続してある。
本発明では、上記ディスプレイ3上に消火ボタン11を設けてあり、この消火ボタン11の操作により酸素流路4の流量コントローラ8に出力0%の制御信号を送り、ガラスカラム1への酸素の供給を停止しガラスカラム1内の試験片の燃焼を消火するようにしてある。
FIG. 2 shows an embodiment of the oxygen index measuring apparatus at room temperature according to the present invention. An oxygen channel 4 and a nitrogen channel 5 to the glass column 1 are provided, and the oxygen channel 4 and the nitrogen channel 5 are joined together and connected to the glass column 1. Both the oxygen channel 4 and the nitrogen channel 5 are provided with an on-off valve 6, a filter 7, a flow rate controller 8 and an electromagnetic valve 9. On the other hand, the display 3 is connected to the flow rate controllers 8 of the oxygen channel 4 and the nitrogen channel 5 via the converter 10.
In the present invention, a fire extinguishing button 11 is provided on the display 3, and the operation of the fire extinguishing button 11 sends a control signal of 0% output to the flow rate controller 8 of the oxygen flow path 4 to supply oxygen to the glass column 1. And the combustion of the test piece in the glass column 1 is extinguished.

図3に本発明の高温における酸素指数測定装置の実施例を示してある。従前装置と同様、ガラスカラム1にカラムヒータ12と予熱ヒータ13が設けてあり、室温における酸素指数測定装置に空気流路16が加えられ、酸素流路4及び窒素流路5と合流してガラスカラム1へ接続してある。この空気流路16にフィルタ7、流量コントローラ8及び電磁弁9を設けてあり、この空気流路16の流量コントローラ8を変換器10に接続してある。
この実施例でもディスプレイ3上に消火ボタン11を設けてあり、この消火ボタン11の操作により空気流路16の流量コントローラ8に酸素流路4の流量コントローラ8と同じ出力の制御信号を送ると同時に、酸素流路4の流量コントローラ8に出力0%の制御信号を送ることで、空気と窒素を混合してガラスカラム1内の総流量を維持し、それにより温度変化なく試験片の燃焼を消火するようにしてある。
FIG. 3 shows an embodiment of the oxygen index measuring apparatus at high temperature according to the present invention. As in the conventional apparatus, the glass column 1 is provided with a column heater 12 and a preheating heater 13, an air flow path 16 is added to the oxygen index measurement apparatus at room temperature, and the glass column is joined with the oxygen flow path 4 and the nitrogen flow path 5. 1 is connected. The air flow path 16 is provided with a filter 7, a flow rate controller 8, and a solenoid valve 9, and the flow rate controller 8 of the air flow path 16 is connected to the converter 10.
Also in this embodiment, a fire extinguishing button 11 is provided on the display 3, and by operating the fire extinguishing button 11, a control signal having the same output as the flow rate controller 8 of the oxygen flow path 4 is sent to the flow rate controller 8 of the air flow path 16 at the same time. By sending a control signal of 0% output to the flow rate controller 8 of the oxygen flow path 4, air and nitrogen are mixed to maintain the total flow rate in the glass column 1, thereby extinguishing the burning of the specimen without temperature change. I have to do it.

これら室温における酸素指数測定装置及び高温における酸素指数測定装置においては、ガラスカラム1内に図示しない試験片保持具を置き、この試験片保持具に試験片を垂直に保持して試験片に着火し試験を行う。この試験で試験片が規定以上の時間又は長さが燃焼した場合、本発明ではディスプレイ3上の消火ボタンを操作し、試験片の燃焼を消火する。   In these oxygen index measuring devices at room temperature and oxygen index measuring devices at high temperatures, a test piece holder (not shown) is placed in the glass column 1, and the test piece is held vertically in this test piece holder to ignite the test piece. Perform the test. In this test, when the test piece is burned for a time or longer than specified, the present invention operates the fire extinguishing button on the display 3 to extinguish the combustion of the test piece.

1 ガラスカラム
2 装置本体
3 ディスプレイ
4 酸素流路
5 窒素流路
6 開閉弁
7 フィルタ
8 流量コントローラ
9 電磁弁
10 変換器
11 消火ボタン
12 カラムヒータ
13 予熱ヒータ
16 空気流路

DESCRIPTION OF SYMBOLS 1 Glass column 2 Apparatus main body 3 Display 4 Oxygen flow path 5 Nitrogen flow path 6 On-off valve 7 Filter 8 Flow rate controller 9 Electromagnetic valve 10 Converter 11 Fire extinguishing button 12 Column heater 13 Preheating heater 16 Air flow path

Claims (2)

ガラスカラムへの酸素流路と窒素流路を含む制御装置と、試験片を収めて燃焼させるガラスカラムと、PC操作画面を有するディスプレイとからなり、上記ディスプレイ上に消火ボタンを設け、この消火ボタンの操作により酸素流路の流量コントローラに出力0%の制御信号を送り試験片の燃焼を消火することを特徴とする酸素指数測定装置。 It consists of a control device including an oxygen flow path and a nitrogen flow path to the glass column, a glass column for storing and burning a test piece, and a display having a PC operation screen, and a fire extinguishing button is provided on the display. The oxygen index measuring apparatus is characterized in that the control signal with an output of 0% is sent to the flow rate controller of the oxygen channel by the operation to extinguish the combustion of the test piece. ガラスカラムへの酸素流路、窒素流路及び空気流路を含む制御装置と、試験片を収めて燃焼させるガラスカラムと、PC操作画面を有するディスプレイとからなり、上記ディスプレイ上に消火ボタンを設け、この消火ボタンの操作により、空気の流量コントローラに酸素の流量コントローラと同じ出力の制御信号を送ると同時に、酸素の流量コントローラに出力0%の制御信号を送ることで、空気と窒素を混合してガラスカラム内の総流量を維持し、それにより温度変化なく試験片の燃焼を消火することを特徴とする酸素指数測定装置。 Consists of a control device including an oxygen flow path, a nitrogen flow path and an air flow path to the glass column, a glass column for storing a test piece and burning, and a display having a PC operation screen, and a fire extinguishing button is provided on the display. By operating this fire extinguishing button, the control signal with the same output as the oxygen flow controller is sent to the air flow controller, and at the same time, the control signal with 0% output is sent to the oxygen flow controller to mix air and nitrogen. An oxygen index measuring device that maintains the total flow rate in the glass column and extinguishes the burning of the test piece without temperature change.
JP2010131575A 2010-06-09 2010-06-09 Oxygen index measuring device Active JP5480021B2 (en)

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