JPH08155943A - Destruction of article to be destructed - Google Patents

Abstract

PURPOSE: To accurately destruct an article to be destructed in a preset distructing direction by preventing that the article to be destructed is destructed from destruction holes toward the outer surface thereof by setting the interval between a plurality of the destruction holes bored in the article to be destructed smaller than the distance from the respective destruction holes to the outer surface of the article to be destructed. CONSTITUTION: The spaced-apart distance between the destruction holes 20a bored in an article H1 to be destructed is set smaller than the distance from the destruction holes 20a to the outer surface 30 of the article H1 to be destructed. Therefore, the inner peripheral surfaces of the destruction holes 20a adjacent to destruction containers 2 and having no destruction containers 2 provided thereto become the free surfaces nearest to the destruction containers 2 and the impact force at the time of the melting and evaporation of fine metal wires acts in the direction separating the article H1 to be destructed along the line connecting the respective destruction holes 20a. Therefore, the article H1 to be destructed is prevented from being destructed from the destruction holes 20a to the outer surface 30 thereof and can be accuratly destructed in a preset destructing direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of destroying an object to be destroyed using impact energy generated by electric discharge.

[0002]

2. Description of the Related Art Conventionally, there are the following methods for destroying an object to be destroyed such as a concrete structure.

That is, by using a destruction device having a pair of electrodes connected to a capacitor and a thin metal wire connected between the electrodes, the electric energy charged and accumulated in the capacitor is supplied to the thin metal wire in a short time. Then, the object to be destroyed is destroyed by the impact force generated by the rapid melting and vaporization of the thin metal wire caused by this, and as shown in FIG. Destruction holes 51 are formed, a destructive device (destruction probe) 52 is attached to each destructive hole 51, and electric energy is supplied to the electrodes of each destructive device 52.

[0004]

According to the above-mentioned conventional method, the object to be destroyed 50 can be destroyed by supplying electric energy to the electrodes of the destruction device 52 mounted in each destruction hole 51. Even if the separation distance between the breaking holes 51 is set, there is a fixed relationship between the separation distance and the distance from the breaking hole 51 to the outer surface 53 which is the outer free surface of the object to be destroyed 50. Is not set.

Therefore, for example, the outer surface 53 of the object to be destroyed 50 from the breaking hole 51 is more than the distance between the breaking holes 51.
When the distance to is small, the fracture holes 51 are not broken in the direction in which they are connected, but from the fracture holes 51 toward the outer surface 53 (the direction perpendicular to the direction in which the fracture holes 51 are connected). There is a problem that it may be destroyed, and the direction of destruction cannot be accurately predicted.

Therefore, an object of the present invention is to provide a method of destroying an object to be destroyed which can solve the above problems.

[0007]

Means for solving the problems in the present invention is to use a destruction apparatus provided with a pair of electrodes connected to a capacitor and a thin metal wire connected between the electrodes, In the destruction method in which the electric energy charged and accumulated in the capacitor is supplied to and discharged from the thin metal wire, and the resulting destructive object is destroyed by the impact force generated by the rapid vaporization and melting of the thin metal wire. The distance between the holes is set smaller than the distance from each breaking hole to the outer surface of the object to be destroyed, and the object to be destroyed is destroyed.

[0008]

In the above-described destruction method, the distance between the plurality of destruction holes formed in the object to be destroyed is set smaller than the distance from each destruction hole to the outer surface of the object to be destroyed, and the destruction device is mounted in the hole for destruction. , When a certain amount of electric energy is stored in a capacitor and the electric energy is supplied to a thin metal wire and discharged,
An impact force is generated due to the rapid vaporization of thin metal wires, and the impact force acts in the direction that separates the objects to be destroyed by the line connecting the holes for destruction, and the objects to be destroyed connect the holes for destruction. Destroy or weaken along the line.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the breaking method of the present invention will be described below with reference to the drawings. FIG. 1 is a partially broken front view of a breaking container showing an embodiment of the present invention, FIG. 2 is an explanatory view showing a usage state, FIG. 3 is a plan view of an object to be broken having holes for breaking, and FIG. FIG. 3 is a perspective view showing a destroyed state of the object to be destroyed.

As shown in FIG. 1, a breaking device 1 for carrying out a breaking method according to an embodiment of the present invention comprises a breaking container 2 made of plastic rubber or waterproof paper, and a breaking liquid (for example, water or the like). Is used), and a pair of electrode rods 4, 4 (made of Cu, for example) are inserted into the top plate 2a of the destruction container 2 through the through holes 2b. It is fixed to the nut 2a by a nut B1 (or caulking), immersed in the breaking liquid 3, and enclosed in the breaking container 2.

The electrode rods 4 and 4 are held in the middle by holding members 7 and 7 for holding the electrode rods 4 and 4 in parallel, and thin metal wires are provided at the tips of the electrode rods 4 and 4. 8 (made of Cu, Al, for example) is attached by welding or caulking.

Portions of the two electrode rods 4 and 4 projecting from the top plate 2a are used as terminals 5 and 5, and a terminal cover 6 for preventing the terminals 5 and 5 from forming an insulating film on the top plate 2a. Is attached.

As shown in FIG. 2, an energy supply circuit 9 for supplying electric energy to the thin metal wire 8 is provided, and the energy supply circuit 9 includes a power supply device 10 connected to the terminals 5 and 5. A control circuit 11 connected in series between the power supply device 10 and one of the terminals 5 for controlling the amount of electric energy stored in the power supply device 10.
From a discharge switch 12 connected between the control circuit 11 and one terminal 5, and an energy storage circuit (comprising a capacitor) 13 connected in parallel between the power supply device 10 and both terminals 5, 5. It is configured.

Next, with reference to FIGS. 2 and 3, a destruction method for destroying the object to be destroyed H1 using the destruction apparatus 1 according to the embodiment of the present invention will be described. First, a plurality of breaking holes 20a are formed in the object to be destroyed H1 at a predetermined distance Y. At this time, the distance Y between the breaking holes 20a is set smaller than the distance Z from the breaking hole 20a to the outer surface 30 which is the outer free surface of the object to be destroyed H1.

Then, the destruction container 2 is filled with the destruction liquid 3, and the electrodes 4, 4 and the thin metal wire 8 connected thereto are immersed in the destruction liquid 3 to form, for example, the destruction container 2.
Are installed in the breaking holes 20a every other one.

When the energy supply circuit 9 is connected to the terminals 5 and 5 to store a predetermined amount of electric energy in the energy storage circuit 13 and the discharge switch 12 is turned on, the metal thin wire 8 is turned on in a short time. Electric energy is supplied, and the thin metal wire 8 is melted and evaporated, and an impact force at that time is given to the breaking liquid 3.

Then, the separation distance Y of the breaking holes 20a is
The distance Z from the breaking hole 20a to the outer surface 30 of the object to be destroyed H1 is set smaller than the breaking hole 20a.
Since the breaking holes 20a adjacent to the breaking container 2 and having no breaking container 2 attached thereto are the free surfaces closest to the breaking container 2, the thin metal wires 8 4 is melted and evaporated, the impact force acts in the direction of separating the objects to be destroyed H1 by the line connecting the breaking holes 20, and FIG.
As shown in, the object to be destroyed H1 can be broken or weakened along the line connecting the breaking holes 20a.

As described above, according to the breaking method in the embodiment of the present invention, the distance Y between the breaking holes 20a formed in the breaking object H1 is from the breaking hole 20a to the outer surface 30 of the breaking object H1. Since the distance is set to be smaller than the distance Z, the inner peripheral surface of the breaking hole 20a adjacent to the breaking container 2 and not equipped with the breaking container 2 is the free surface closest to the breaking container 2, and the thin metal wire 8 is formed. The impact force at the time of melting and evaporating acts in the direction of separating the destructible object H1 by the line connecting the destructive holes 20, so that the destructible object H1 is destroyed from the destructive hole 20a toward the outer surface 30. It is possible to prevent the object to be destroyed H1 from breaking accurately in the preset breaking direction.

Particularly in the case of a small volume H1 to be destroyed,
Although it has been difficult to set the breaking direction in the conventional method, as described above, the distance Y between the breaking holes 20a is set to the breaking hole 20a.
If the object to be destroyed is set to be smaller than the distance Z from the object H1 to the outer surface 30 of the object to be destroyed, even the object to be destroyed H1 having a small volume can be accurately destroyed in a preset breaking direction.

In the above embodiment, the breaking holes 20a are arranged on the object to be destroyed H1 in a straight line, but the invention is not limited to this. The distance Y between the breaking holes 20a is set to the breaking hole 2a.
As long as the relationship is set to be smaller than the distance Z from 0a to the outer surface 30 of the object to be destroyed H1, even if the breaking hole 20a is arranged so as to be drilled on a curved line, The object to be destroyed H1 can be destroyed along with it.

Further, in the above embodiment, the breaking containers 2 are mounted in the breaking holes 20a every other one, but the invention is not limited to this, and in consideration of the breaking force of the breaking device 1, two breaking containers are mounted. However, as in the above-described embodiment, the object to be destroyed H1 can be destroyed in a preset direction.

[0022]

As is apparent from the above description, according to the present invention, the distance between the plurality of breaking holes formed in the object to be destroyed is set smaller than the distance from each breaking hole to the outer surface of the object to be destroyed. Since the destruction device is installed in the destruction hole to destroy the object to be destroyed, the inner peripheral surface of the destruction hole adjacent to the destruction device becomes the free surface closest to the destruction container, and The impact force when the thin wire melts and evaporates works in the direction of separating the objects to be destroyed by the line connecting the destruction holes, and thus the objects to be destroyed are destroyed from the destruction holes toward the outer surface. It is possible to prevent the object to be destroyed accurately in the preset direction of destruction.

[Brief description of drawings]

FIG. 1 is a front view of a partially broken essential part of a breaking container showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram similarly showing a usage state.

FIG. 3 is a plan view of an object to be destroyed in which a hole for destruction is also formed.

FIG. 4 is a perspective view showing a state of destruction of an object to be destroyed after the destruction.

FIG. 5 is a plan view of an object to be destroyed in which a hole for destruction is formed by a conventional destruction method.

[Explanation of symbols]

 1 Destruction device 2 Destruction container 3 Destruction liquid 4 Electrode rod 5 Terminal 8 Metal wire 9 Energy supply circuit 10 Power supply device 11 Control circuit 12 Discharge switch 13 Energy storage circuit 15 Terminal block H1 Destruction object

Continued Front Page (72) Inventor Hidehiko Maehata 5-3-8, Nishikujo 5-3, Konohana-ku, Osaka City, Osaka Prefecture Hitachi Shipbuilding Co., Ltd.

Claims (1)

[Claims] 1. A destruction device comprising a pair of electrodes connected to a capacitor and a thin metal wire connected between the electrodes is used to supply and discharge the electrical energy charged and accumulated in the capacitor to the thin metal wire, In the destruction method that destroys the object to be destroyed by the impact force generated by the rapid melting and vaporization of the fine metal wires caused by, the distance between the plurality of holes for breaking the object to be destroyed is defined by the outer surface of the object to be destroyed from each hole for destruction. A method for destroying an object to be destroyed, characterized by destroying the object to be destroyed by setting the distance smaller than the distance.