JPH0711353Y2 - Igniter - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an igniter for igniting solid, liquid, or gaseous combustible substances.

[Conventional technology]

Conventionally, for example, an industrial detonator, an electric detonator, an igniter or the like is known as an igniter in order to ignite a black powder or ignite a smoke generating agent used for fire training etc. safely and remotely.

As such an electric detonator, for example, one disclosed in Japanese Patent Publication No. 63-52317 is disclosed.

Fig. 4 shows an electric detonator of this kind.
Reference numeral 21 is a bottomed tubular body made of copper, aluminum, or iron. Inside the bottom portion 21A of the bottomed tubular body 21, an additive 22 such as PETN or RDX is filled. A deferral device 23 is provided inside the bottomed tubular body 21 adjacent to the filler 22.

Then, inside the upper portion 21B of the bottomed tubular body 21, for example, DDNP,
A detonator 24, such as lead azide, is filled adjacent to the deferral device 23. Reference numeral 25 is an ignition ball, which is constructed by enclosing the electric bridge wire 26 with an ignition charge. There are two lead wires 27,27 on this electric bridge line 26.
Are connected. The open end of the bottomed tubular body 21 is closed by an embolus 28, and the lead wires 27, 27 pass through the embolus 28.

[Problems to be solved by the device]

In the conventional electric detonator, PETN, RDX was used as the additive 22.
Since such explosives are used, the flame when ignited is small, the duration of the exothermic flame is short, and it is difficult to ignite explosives such as smoke producing agents and flame producing agents to be ignited. In addition, there is a drawback that a large noise is emitted at the time of ignition and metal fragments are blown off.

Furthermore, the electric detonator filled with the charge 22 and the detonator 24 was subject to the Explosives Control Law, and was inconvenient to handle.

The present invention has been made to solve the above-mentioned problems, and its purpose is to increase the duration of the exothermic flame and increase the flame to make it possible to ignite smoke generating agents, flaming agents, and other combustible agents. It is to provide an igniter that reliably ignites a volatile substance.

[Means for Solving the Problems]

In order to achieve the above object, the present invention provides a metal pipe body,
A mixture of magnesium powder and polyfluoroethylene fiber is used as an exothermic agent, and a mixture of cupric oxide powder and aluminum powder is enclosed as an igniting agent adjacent to the exothermic agent.

[Action]

In the present invention, when the mixture of the cupric oxide powder and the aluminum powder is ignited by the heat of the heating resistor or the like, the cupric oxide is reduced by the thermite reaction, and the exothermic reaction occurs.

The magnesium generated by the heat generated during the thermite reaction is ignited and burned / oxidized. During this magnesium oxidation reaction, a large flame is formed and an exothermic action occurs, and the smoke producing agent, flame producing agent, etc. to be ignited around the igniter are ignited.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an igniter according to an embodiment of the present invention.

In the figure, 1 is a bottomed tubular body made of aluminum having a wall thickness of 0.5 to 1.0 mm, the diameter thereof is 7 to 7.1 mm, and the length thereof can be arbitrarily adjusted.

The bottom side 1A of the bottomed tubular body 1 is filled with a mixture 2 of magnesium powder and polyfluorinated ethylene fiber,
It weighs more than 0.5 g and is under pressure (200 kg / cm ² ). A mixture 3 of cupric oxide powder and aluminum powder is filled in the bottomed tubular body 1 adjacent to the mixture 2 of the magnesium powder and the polyfluoroethylene fiber. The weight of this mixture 3 is about 0.5-0.8 g. The open end of the bottomed tubular body 1 is closed with an embolus 4. Two lead wires 5 and 5 penetrate the embolus 4, and a heating resistor 6 made of a nichrome wire or a platinum wire is connected to the lead wires 5 and 5,
The heating resistor 6 is embedded in a mixture 3 of cupric oxide powder and aluminum powder.

When a current flows through the lead wires 5 and the Joule heat causes the heating resistor 6 to generate heat, the mixture 3 of cupric oxide powder and aluminum powder is ignited. By this ignition, a thermite reaction occurs and the cupric oxide powder is reduced. At this time, an exothermic reaction occurs with the thermite reaction.

Then, the heat of the thermite reaction ignites magnesium to oxidize and burn. During this oxidation reaction of magnesium, a larger flame and exothermic action than the flame generated during combustion and detonation of the conventional igniter occurs, and the flame time becomes a unit of millisecond. It is longer than (unit of microsecond).

Then, the smoke generating agent, the flame generating agent, etc. around the igniter are ignited and exploded.

According to the configuration as described above, the igniter uses the large flame and heat generated during the oxidation reaction of magnesium as compared with the conventional electric detonator to ignite the smoke generating agent, the flame generating agent, and the like. The flame is large, the duration of the flame is long, and it is possible to reliably ignite the surrounding smoke generating agent, flame generating agent and the like.

Further, since the igniter does not use explosives, it has a low noise, is less likely to cause metal fragments, is not subject to the Explosives Control Law, and can be easily handled unlike explosives.

As shown in FIG. 2, a deferment device 7 may be provided between the mixture 2 of magnesium powder and polyfluoroethylene fiber and the mixture 3 of cupric oxide powder and aluminum powder.

Further, in this embodiment, the heating resistor 6 is used as the ignition means for the mixture 3 of the cupric oxide powder and the aluminum powder, but as shown in FIG.
Can also be used.

[Effect of device]

As described above, according to the present invention, since the large flame and heat generated during the oxidation reaction of magnesium are used, the flame is larger and the duration is longer than that of the conventional electric detonator, and the smoke generating agent is used. , It is possible to reliably ignite an ignited object such as a flame retardant.

Further, the igniter uses a mixture of magnesium powder and polyfluorinated ethylene-based fiber as an exothermic agent and a mixture of cupric oxide powder and aluminum powder as an igniting agent. Since it is not used, the noise at ignition is small, metal fragments are not generated, the application of the Explosives Control Law is not applied, and unlike the explosives, it is possible to facilitate the handling.

[Brief description of drawings]

FIG. 1 is a sectional view of an igniter according to an embodiment of the present invention. FIG. 2 is a sectional view showing a modified example of the igniter according to the embodiment of the present invention. FIG. 3 is a sectional view showing another modified example of the igniter according to the embodiment of the present invention. FIG. 4 is a sectional view of a conventional igniter. [Explanation of Signs of Main Parts] 1 ... Bottomed tubular body 2 ... Mixture of magnesium powder and polyfluorinated ethylene fiber 3 ... Mixture of cupric oxide powder and aluminum powder.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kaoru Nise Odaira, Odakura, Saigomura, Nishishirakawa-gun, Fukushima 430-11 (72) Inventor, Toshihiro Okitsu 3-105 Furutakayama, Shirakawa, Fukushima

Claims (1)

[Scope of utility model registration request] 1. A mixture of magnesium powder and polyfluorinated ethylene fiber as a heat-generating agent, and a mixture of cupric oxide powder and aluminum powder is enclosed as a igniting agent adjacent to the heat-generating agent in a metal tube. Characterized igniter