JPH05227732A - High-performance explosive generator - Google Patents

Abstract

PURPOSE:To get a high-performance explosive generator where a large current can flow by charging a normal explosive on initiating side and subsequently highperformance explosive, as the explosive to be charged, in an armature. CONSTITUTION:In case of a coil-type generator, a normal explosive 8 and a highperformance explosive 9 are arranged as explosives inside a cylindrical armature so that the high-performance explosive 9 may become conical at the interface with the normal explosive 9 and pierce the ordinary explosive 8. Moreover, a stator 3 with the normal winding 4 is arranged around an armature 1, and an initial power source 6 and a load 7 are connected, and when the explosion is triggered by the triggering device 5 at one end of the normal explosive, the armature operates by the explosion of the normal explosive 8 at first, and the gap 2 is reduced, and a magnetic field is condensed. And, as the condensation of the magnetic field advances, the explosion of the high- performance explosive 9 begins, and the condensation of the magnetic field advances with great force, as a result, a large current can be supplied to the load 7.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a magnetic field concentration type (hereinafter referred to as MC
Type)) explosive generator, especially high-power explosive generator using high-performance explosives.

[0002]

2. Description of the Related Art The MC type explosive generator is based on the principle that the gap between the armature and the stator is reduced and the magnetic field is concentrated by the detonation of the explosive for driving the armature.

The specific structure will be described with reference to the drawings. As shown in the cross section of FIG. 8, a stator 3 containing a coil winding 4 is provided around a cylindrical armature 1 with a gap 2. There are a coil type generator arranged and a plate type generator in which a plate-shaped armature 1 and a stator 3 are opposed to each other with a gap 2 therebetween, as shown in FIG. In these generators, when the load 7 is energized by the initial current source 6 through the armature 1 and the stator 3, when the explosive 8 disposed inside the armature 1 is exploded by the detonator 5 in the case of the coil type, As the detonation progresses, the armature 1 expands, the gap 2 existing between the armature 1 and the stator 3 contracts, and the magnetic field formed there is concentrated. In the case of a flat plate generator, a flat plate armature 1
When the explosive 8 arranged above is detonated by the detonator 5, the plate-shaped armature 1 is pushed down toward the plate-shaped stator 3, and the gap 2 between the armature 1 and the stator 3 is reduced, The magnetic field formed there is concentrated.

In this case, the parallel void portion 2 formed by the stator 3 and the armature 1 in proportion to the square of the strength of the concentrated magnetic field.
The force (f ₁ ) against the reduction of is increased. On the other hand, due to the detonation force, the force (f ₂ ) for expanding the armature 1 to the outside in the case of the coil type, and the force (f ₂ ) for pushing down the armature 1 in the case of the flat plate type ₂ ) needs to be larger.

When f ₁ = f ₂ , the concentration of the magnetic field is stopped and further current amplification cannot be performed.

[0006]

SUMMARY OF THE INVENTION The present invention is intended to provide a high-performance explosive generator in which the above-mentioned f ₂ is increased by specifying the type of explosive and the method of loading it.

[0007]

The structure of the present invention for solving the above-mentioned problems is, as described in the claims, an explosive to be loaded on an armature, a normal explosive on the detonating side, and subsequently a high-performance explosive. It is an MC type high-performance explosive generator loaded with explosives. The regular explosive has a steady explosion speed of 6.0 km.
/ Sec or less, and faster than that is called high performance explosive.

Generally, the force exerted by the detonation-producing gas on the armature is proportional to approximately the square of the explosive velocity. That is, in the present invention, the explosive is rationally used by using the normal explosive in the first half where the force f ₁ against the reduction of the void 2 is small, and by combining the high explosive in the latter half when the force f ₁ is large, the explosive is rationally used. Even if a shaped generator is used, a large current can be obtained.

Further, in the magnetic field concentration type power generation, the rate of change (decrease rate) of the inductance is proportional to the magnetic field concentration rate and it is proportional to the electric output. From this point as well, explosives having a fast detonation rate are preferable. But high explosives are expensive, so
Efficient power generation can be achieved by using a normal explosive in the initial stage of magnetic field concentration and a high-performance explosive in the latter half.

A concrete point will be described with reference to the drawings.
FIG. 3 is a schematic view of a vertical cross section in the case of the coil type generator of the present invention. Inside the cylindrical armature 1, a normal explosive 8 and a high-performance explosive 9 are arranged as explosives so that the high-performance explosive 9 forms a conical shape at the interface with the normal explosive 8 and penetrates the normal explosive. A stator 3 incorporating a coil winding 4 is arranged around the armature 1, and an initial current source 6 and a load 7 are connected as shown. When the detonator 5 at one end of the normal explosive detonates, initially (while f ₁ is small), the detonation of the normal explosive 8 activates the armature 1 to reduce the gap 2 and concentrate the magnetic field. When concentration of the magnetic field f ₁ is greater advances occur detonation of high explosives 9, further advances are concentrated in a magnetic field with a large force, as a result, it is possible to supply a large current to the load 7.

2 to 7 show a case of a flat plate type generator. 2 is a schematic view of a vertical cross section of a flat plate generator,
FIG. 3 is a plan view thereof. FIG. 2 shows that the normal explosive 8 and the high-performance explosive 9 are arranged on the armature 1 so that the normal explosive 8 penetrates between the high-performance explosive 9 and the armature 1 in a wedge shape at their interfaces. There is. In this case, first, the detonator 5 starts detonation of the normal explosive, the armature 1 is pushed down toward the stator 3, the gap 2 is reduced, and the magnetic field is concentrated. When the concentration of the magnetic field progresses and f ₁ increases, the detonation of the high-performance explosive 9 starts, and the concentration of the magnetic field further proceeds with a large force, so that a large current can be supplied to the load 7.

4 and 5 have the same meaning as in FIGS. 2 and 3, and show an example in which the high-performance explosive 9 is wedge-shaped and penetrates into the central portion of the normal explosive 8.

FIGS. 6 and 7 also show a flat plate type generator,
This is a specific example in which the tip of the high-performance explosive 9 penetrates into the center of the normal explosive 8 in a pyramidal shape.

In any of the above examples, the high-performance explosive 9 exists at a position apart from the armature 1 at the interface between the high-performance explosive 9 and the normal explosive 8, and the normal explosive 8 is in contact with the armature 1. This is because if the high-performance explosive 9 is in contact with the armature 1 at the interface, the explosive velocity of the two kinds of explosives becomes discontinuous at the contact portion, and the armature 1 may be broken.

The discontinuity of the explosive velocity can be prevented by disposing an explosive mixed with both explosives at the contact portion between the high-performance explosive 9 and the normal explosive 8, but it is difficult to produce such explosive, and therefore, it is not practical. Absent.

There is an optimum value for the angle (eg, θ in FIG. 1) of the tip of the high explosive penetrating into the normal explosive at the interface between the normal explosive 8 and the high explosive 9, and It is represented by a mathematical formula.

Assuming that the explosive velocity of a normal explosive is d ₁ (m / sec) and the explosive velocity of a high-performance explosive is d ₂ (m / sec), d ₂ · c
osθ ≧ d ₁ than _{cosθ ≧ d 1 / d 2 →} θ ≦ cos -1 is (d ₁ / d ₂₎ is a condition.

The explosives used in the present invention have two detonation speeds, for example, a detonation speed of 5,500 m / sec using a plastic explosive containing Pentolitto and an explosive speed of 8 using a plastic explosive including HMX. 400 m
It is conceivable to combine explosives having a speed of 3 sec./sec.

[0019]

EXAMPLES The present invention will be specifically described below with reference to examples.

The above explosion speeds of 5,500 m / sec and 8,4
As a result of conducting an experiment in the range of θ = 30 ° to 40 ° with a combination of 00 m / sec, a detonation speed of 5,500 m / sec, an increase of 20 to 30% as a current amplification value in comparison with a single one. I was seen. In addition, it was observed that the current did not increase due to the phenomenon that was considered to be the breakage of the liner when the angle was not set to θ = 49 ° or less.

[0021]

As described above, the explosive power generator of the present invention can obtain a larger current than the conventional one.

[Brief description of drawings]

FIG. 1 is a schematic vertical cross-sectional view showing a configuration of a coil-type power generator according to a specific example of the present invention,

FIG. 2 is a schematic diagram of a vertical cross section showing a configuration of a flat plate generator among specific examples of the present invention,

3 is a schematic plan view of the apparatus of FIG. 2,

FIG. 4 is a schematic view of a vertical cross section of a specific example different from FIG.

5 is a schematic plan view of the apparatus of FIG. 4,

FIG. 6 is a schematic view of a vertical cross section of a specific example different from FIG.

7 is a schematic plan view of the apparatus of FIG. 6,

FIG. 8 is a schematic vertical cross-sectional view showing the configuration of a conventional coil type generator.

[Explanation of symbols]

 1 Armature 2 Air gap 3 Stator 4 Coil winding 5 Detonator 6 Initial current source 7 Load 8 Normal explosive 9 High performance explosive

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 000004606 Nichicon Co., Ltd. Oike Dori Karasuma Higashiiri 1st Line, Nakagyo-ku, Kyoto City, Kyoto Prefecture 4 Uehara Building, 3rd Floor, 191, Nakabori-cho (74) Attorney Komatsu Hidetake (2 outside) (72) Inventor Shuzo Fujiwara, 1-1, Higashi, Tsukuba-shi, Ibaraki Institute of Industrial Science and Technology, Institute of Chemical Research (72) Inventor, Yozo Kakudate, 1-1, Higashi, Tsukuba, Ibaraki In-house (72) Inventor, Yusaba Province, 1-1 Higashi, Tsukuba, Ibaraki Prefecture, Institute of Chemical Technology, Institute of Industrial Technology (72) Inventor, Masanori Yoshida, 1-1, East, Tsukuba City, Ibaraki Institute, Institute of Chemical Technology (72) Aoki Katsutoshi 1-chome, Higashi 1-chome, Tsukuba-shi, Ibaraki Institute of Chemical Technology, Institute of Industrial Technology (72) Inventor Akira Kubota Asahi Kasei Kogyo Co., Ltd. 1-2 1-2 Yurakucho, Chiyoda-ku, Tokyo (72) Inventor Shunichi Sato 6-4100 Asahi-cho, Nobeoka-shi, Miyazaki Prefecture Asahi Kasei Kogyo Co., Ltd. (72) Masahiro Miyamoto 2 Nagasuka, Yokosuka-shi 2-2-1 Fuji Electric Research Institute Co., Ltd. (72) Inventor Ko Morita 2-2-1 Nagasaka, Yokosuka City Fuji Electric Research Institute Co., Ltd. (72) Inventor Noriyuki Hiroshige Arata Tanabe, Kawasaki-ku, Kawasaki-shi No. 1-1 No. 1 in Fuji Electric Co., Ltd. (72) Inventor Tokuro Nakazawa 4th Uehara Building, 3rd floor, Uehara Building, 191, Nakabori-cho, Oike Dori

Claims (1)

[Claims] 1. A magnetic field concentrating high-performance explosive power generator characterized in that, as an explosive to be loaded into an armature, a normal explosive is loaded on the detonating side, followed by a high-performance explosive.