JP3107718B2 - How to destroy objects - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for destroying an object to be destroyed using impact energy due to 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, using a destruction device having a pair of electrodes connected to a capacitor and a thin metal wire connected between the two electrodes, the electric energy charged and stored 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 fine metal wire generated thereby, and as shown in FIG. A breaking hole 51 is formed, a breaking device (breaking probe) 52 is attached to each breaking hole 51, and electric energy is supplied to an electrode of each breaking device 52.

[0004]

According to the above-mentioned conventional method, the object 50 can be destroyed by supplying electric energy to the electrode 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 free surface outside the object 50 to be destroyed. Is not set.

For this reason, for example, the outer surface 53 of the object 50 to be destroyed is larger than the separation distance between the holes 51 for destruction.
In the case where the distance is small, the wire is not broken in the direction connecting the breaking holes 51 but is directed from the breaking hole 51 toward the outer surface 53 (in a direction perpendicular to the direction connecting the breaking holes 51). There is a problem that the device may be destroyed and the direction of the failure cannot be accurately predicted.

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

[0007]

Means for solving the problem of the present invention is achieved by using a destruction device having a pair of electrodes connected to a capacitor and a thin metal wire connected between the two electrodes. In the destruction method that supplies and discharges the electric energy stored in the capacitor to the fine metal wire and destroys the destructible object by the impact force generated by the rapid melting and vaporization of the fine metal wire, the multiple destruction of the 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 destruction method, the distance between the plurality of destruction holes drilled in the object to be destroyed is set to be smaller than the distance from each of the destruction holes to the outer surface of the object to be destroyed, and the destruction device is mounted on the destruction hole. When a predetermined 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 melting and vaporization of the thin metal wire, and the impact force acts in the direction that separates the destruction object at the line connecting each destruction hole, and the destruction object connects each destruction hole Breaks or weakens along the line.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially cutaway front view of a destruction container showing an embodiment of the present invention, FIG. 2 is an explanatory view showing a use state, FIG. 3 is a plan view of an object to be destroyed having a hole for destruction, and FIG. It is a perspective view which shows the destruction state of the to-be-destructed object.

As shown in FIG. 1, a destruction apparatus 1 for carrying out a destruction method according to an embodiment of the present invention includes a destruction container 2 made of plastic rubber or waterproof paper and a destruction liquid (for example, water or the like). 3), a pair of electrode rods 4, 4 (for example, made of Cu) are inserted into the top plate 2a of the destruction container 2 from the through-hole 2b, and the two electrode rods 4, 4 are connected to the top plate. 2a is fixed by a nut B1 (or caulking), is immersed in the breaking liquid 3, and is sealed in the breaking container 2.

The two electrode rods 4 and 4 are held in the middle thereof by holding members 7 and 7 for holding the electrode rods 4 and 4 in parallel. 8 (for example, made of Cu and Al) is attached by welding or caulking.

[0012] Then the both electrode rod 4, 4 portion projecting from the top plate 2a of the terminal 5, 5, terminal cover to prevent the insulating film is formed on the terminal 5, 5 to the top plate 2a 6 Is attached.

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

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

Then, the inside of the destruction vessel 2 is filled with the destruction liquid 3, and the electrodes 4, 4 and the thin metal wires 8 connected thereto are immersed in the destruction liquid 3.
Are mounted in the breaking holes 20a alternately.

The energy supply circuit 9 is connected to the terminals 5 and 5, electric energy of a predetermined capacity is stored in the energy storage circuit 13, and the discharge switch 12 is turned on. 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.

The distance Y between the breaking holes 20a is
The distance Z from the hole 20a for destruction to the outer surface 30 of the object to be destroyed H1 is set smaller than the distance Z.
The inner peripheral surface of the destruction hole 20a adjacent to the destruction container 2 where the destruction container 2 is not mounted is the free surface closest to the destruction container 2, and therefore, the thin metal wire 8 The impact force at the time of melting and evaporating acts on the line connecting the breaking holes 20 in the direction of separating the object to be destroyed H1, and FIG.
As shown in (1), 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 destruction method in the embodiment of the present invention, the separation distance Y between the destruction hole 20a drilled in the object H1 and the outer surface 30 of the object H1 is determined. Since the distance Z is set smaller than the distance Z, the inner peripheral surface of the breaking hole 20a adjacent to the breaking container 2 where the breaking container 2 is not mounted is the free surface closest to the breaking container 2, and the thin metal wire 8 is The impact force at the time of melting and evaporating acts in a direction to separate the object to be destroyed H1 by a line connecting each of the holes for destruction 20, so that the object to be destroyed H1 is destroyed from the hole for destruction 20a toward the outer surface 30. In this way, the object H1 can be accurately destroyed in a predetermined direction.

In particular, in the case of a small-volume destructible object H1,
Although it was difficult to set the breaking direction by the conventional method, as described above, the separation distance Y of the breaking hole 20a was changed to the breaking hole 20a.
By setting the distance to be smaller than the distance Z from the object to the outer surface 30 of the object H1, the object H1 having a small volume can be accurately destroyed in the preset breaking direction.

In the above embodiment, the breaking holes 20a are arranged in a straight line on the object to be destroyed H1, but the invention is not limited thereto.
If the relationship that the distance Z is set to be smaller than the distance Z from 0a to the outer surface 30 of the object to be destroyed H1 is maintained, even if the breaking holes 20a are arranged so as to be drilled on the curve, The object H1 can be destroyed along.

In the above embodiment, the destruction containers 2 are mounted alternately in the destruction holes 20a. However, the present invention is not limited to this. Even in this case, similarly to the above-described embodiment, the object H1 can be destroyed in a preset direction.

[0022]

As is apparent from the above description, according to the present invention, the interval between the plurality of breaking holes drilled 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. Then, a breaking device is attached to the breaking hole to break the object.The inner peripheral surface of the breaking hole adjacent to the breaking device becomes the free surface closest to the breaking container. The impact force when the thin wire melts and evaporates acts in the direction that separates the object to be destroyed at the line connecting each of the holes for destruction, so that the object to be destroyed is broken from the hole for destruction toward the outer surface. Thus, the object to be destroyed can be accurately destroyed in the preset direction of failure.

[Brief description of the drawings]

FIG. 1 is a front view of a partly broken main part of a destruction container showing an embodiment of the present invention.

FIG. 2 is an explanatory view showing a state of use.

FIG. 3 is a plan view of an object to be destroyed having a hole for destruction.

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

FIG. 5 is a plan view of an object to be broken having a hole for breaking in a conventional breaking method.

[Explanation of symbols]

 DESCRIPTION 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 Destructible object

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hidehiko Maehata 5-3-28 Nishikujo, Konohana-ku, Osaka-shi, Hitachi Zosen Corporation (56) References JP-A-6-235266 (JP, A) ( 58) Fields surveyed (Int. Cl. ⁷ , DB name) E04G 23/08 B26F 3/00 B28D 1/00

Claims (1)

(57) [Claims] An electric energy charged and stored in a capacitor is supplied and discharged to a thin metal wire using a destruction device having a pair of electrodes connected to a capacitor and a thin metal wire connected between the two electrodes. In the destruction method of destroying the object to be destroyed by the impact force generated by the rapid melting and vaporization of the thin metal wire generated by the method, the distance between the plurality of holes for drilling in the object to be destroyed is changed from each fracture hole to the outer surface of the object to be destroyed. A method for destroying an object to be destroyed, characterized in that the object to be destroyed is set with a distance smaller than the distance to the object.