KR100577572B1 - Cartidge of metal expansion cell for rock destruction - Google Patents

Abstract

According to the present invention, a discharge wire for applying a high voltage is formed in the middle of a case, and a case in which the discharge wire is mounted so that the plasma channel generated by the large current applied from the discharge wire can extend to the metal expander housed in the lower side of the case. Regarding the cartridge structure of the metal expander for rock formation with a pressure tube formed therein,

A metal expander in which a metal salt, metal powder, metal oxide, etc. is mixed is accommodated in a case, and a detonation wire is formed to allow a large current to be discharged to the metal expander contained in the case, and both ends of the detonation wire are provided at a power supply unit. In the rock metal expander cartridge structure configured to provide a large current provided through the wire,

Strength to withstand pressure on the case inner wall of the section where the detonation wire is located so that the case in which the detonation wire is located is delayed so that the plasma channel generated in the detonation wire can be led to the lower side of the case. It characterized in that the pressure tube is made of a strong material.

Metal Expander, Detonation Wire, Pressure Tube

Description

Cartridge structure of rock expansion metal {Cartidge of metal expansion cell for rock destruction}

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a sectional view of a metal expander cartridge for rock formed by the present invention;

2 is an exploded perspective view of a cartridge formed by the present invention.

Figure 3 is a state in which the metal expander cartridge for rock according to the present invention is used.

4 is a diagram for explaining a conventional technology.

※ Explanation of code for main part of drawing

30 cartridge of the expansion agent for rock cancer 31 case

32: upper cap 33: guide

34: lower cap 35: pressure tube

36: disc 37: spring

41,42: fixed terminal 44: detonation wire

50: power supply 51,52: electric wire

53 connector 20 metal expander

The present invention relates to a cartridge structure of a metal expander for rock, and more particularly, a discharge wire for applying a high voltage is formed in the middle of a case, and a plasma channel generated by a large current applied from the discharge wire is housed below the case. The present invention relates to a cartridge structure of a metal expander for rock, in which a pressure tube is formed inside the case of the section in which the discharge wire is mounted so as to extend to the metal expander.

In general, explosives are used to apply strong impacts to rocks or rocks in order to increase work efficiency in tunnel excavation, urban land development, quarry blasting, underground cavity, subway construction.

Previously, explosives for rock crushing were mostly used as gunpowder or dynamite. However, explosives of explosives or dynamite not only had a risk of being exploded due to carelessness or impact of management during the storage or transport process, but also had a problem that adversely affects the surrounding environment due to the enormous explosion sound generated during the explosion process.

Recently, as explosives for rock crushing, rapid discharge of current into metal oxides causing oxidation reactions instead of explosives or dynamite causes the medium to expand and generate heat during the oxidation reaction between the electrolyte and metal oxides contained in the cartridge. The 'expanded metal mixture' has been developed and used to apply a shock to destroy the object. Detailed technical details of the 'expanded metal mixture' can be found in Korean Patent Publication No. 213577 or Korean Patent Publication No. 2003-0006083 already published.

In other words, the metal expanded as a oxidizing agent, the metal powder is increased in volume by an exothermic reaction while being oxidized by the metal salt, and the reaction accelerator for promoting the oxidation reaction of the metal salt and the metal powder and the like to form a rapidly expanding metal mixture.

Metal salts include iron nitrate {Fe (NO ₃ ) ₃ }, copper nitrate {Cu (NO ₃ ) ₂ }, barium nitrate {Ba (NO ₃ ) ₄ }, manganese nitrate {Mn (NO ₃ ) ₄ }, magnesium nitrate { Nitrates such as Mg (NO ₃ )}, potassium nitrate {KNO ₃ }, sodium nitrate {NaNO ₃ }, calcium nitrate {Ca (NO ₃ ) ₂ }, ferric trioxide (Fe ₂ O ₃ ), triiron tetraoxide (Fe ₂₎ Metal oxides such as O ₄ ), copper oxide (CuO), manganese dioxide (MnO ₂ ), nickel trioxide (Ni ₂ O ₃ ), and lead oxide (PbO) may be used.

On the other hand, the metal powder is aluminum (Al) sodium (Na), potassium (K), lithium (Li), magnesium (Mg), calcium (Ca), manganese (Mn), barium (Ba), chromium (Cr), Reducing agents such as silicon (Si) are used.

The oxidation promoter is sodium sulfate (NaSO ₄ ), magnesium sulfate (MgSO ₄ ), iron sulfate (FeSO ₄ ), manganese sulfate (MgSO ₄ ), nickel sulfate (NiSO ₄ ), calcium sulfate (CaSO ₄ ) and the like.

In addition, as an electric spark induction electrolyte for promoting the oxidation reaction of the metal salt and the metal powder, a liquid obtained by dissolving a small amount of ammonium borate, nitrate, sulfate, and the like in glycerine such as ethylene glycol and alcohols is used.

That is, the 'expanded metal mixture' in which the above materials are mixed in an appropriate amount is placed in the blast hole by being contained in a predetermined amount in a vinyl paper or a cartridge, so that a large current can be applied to the container containing the expansive metal mixture by a switch operation at a remote location. It is formed. However, when the metal mixture is used in plastic paper, it is not possible to standardize and standardize, and in general, the metal mixture is used in a cartridge.

4 is a view illustrating a conventional cartridge structure of a rock metal expander. The conventional cartridge 10 of rock metal expander has a cylindrical shape in which a metal oxide is contained, and a case 11 and upper and lower portions of the case 11. The upper cap 12 and the lower cap 13 which prevent the opening, the both terminals 14 for applying a large current to the medium accommodated in the case 11, the current is supplied to the terminal 14 It is composed of a power supply unit 17, a wire 16, and the like to return. A predetermined gap is formed between the both terminals 14, and an initiator wire 15 made of aluminum wire or the like is connected between the ends of the terminals 14.

Therefore, a large current flows between the pair of terminals 14, which are switched by the power supply unit 17, and are discharged from the detonation wire 15 to form a plasma channel. The volume of the metal expander 20 is expanded in the process of generating the flame oxidation reaction of the metal expander 20 by the high heat and shock wave energy generated in the plasma channel, thereby expanding the blast hole.

By the way, in the case of a cartridge containing a conventional metal expanding agent, the metal oxide around the detonation wire is first oxidized at the moment when a high pressure is generated in the detonation wire, and thus is housed on the lower side of the case having a long cylindrical shape. The case was destroyed before the metal oxide was completely reacted. Therefore, only the metal expander located on the upper side of the case of the metal expander accommodated in the cartridge is reacted there was a problem that does not obtain a sufficient expansion pressure.

In addition, since the detonation wire is shortly connected in the radial direction of the cylindrical case, the discharge efficiency delivered to the metal oxide was not improved. On the other hand, in the case of the conventional rock metal oxide cartridge, the metal oxide contained in the cylindrical case is filled with the oxide of the fine particles filling the gap between the pores between the oxides located in the lower part of the case during storage or movement. The oxide on the lower side of the case is compacted, and the upper side of the case remains as an air layer, and there is a problem in that performance is degraded in the process of discharging with an initiator wire and oxidizing.

Therefore, the present invention has been made to solve the above problems, the discharge wire for applying a high voltage is formed in the middle of the case, the plasma expander is generated by the large current applied from the discharge wire, the metal expander accommodated in the lower side of the case An object of the present invention is to provide a cartridge structure of a metal expander for rock, in which a pressure tube is formed inside a case of a section in which the discharge wire is mounted so as to extend.

The present invention as a means for achieving the above object,

A metal expander mixed with a metal salt, metal powder, metal oxide, and the like is accommodated in the case, and a detonation wire is formed to allow a large current to be discharged to the metal expander contained in the case. In a rock-forming metal expander cartridge structure in which a provided large current is input through a wire,

Strength to withstand pressure on the case inner wall of the section where the detonation wire is located so that the case in which the detonation wire is located is delayed so that the plasma channel generated in the detonation wire can be led to the lower side of the case. It is characterized in that the pressure tube is made of a strong material.

Hereinafter, with reference to the accompanying drawings, preferred embodiments according to the configuration and operation of the metal expander cartridge for rock according to the present invention will be described in detail.

1 is a cross-sectional view of a metal expander cartridge for rock formed by the present invention, Figure 2 is an exploded perspective view of the cartridge formed by the present invention, Figure 3 is a state diagram in which the metal expander cartridge for rock according to the present invention is used.

Reference numeral 30 indicated in the figure indicates a cartridge of the metal expander for rock formation formed by the present invention. The body of the cartridge 30 has a large cylindrical case 31 and an upper cap provided with fixed terminals 41 and 42 for blocking an open upper end of the case 31 and for inputting current. 32 and a lower cap 34 for blocking an open lower end of the case 31.

Protruding formation of a pair of fixed terminals 41 and 42 for inputting the positive and negative powers of the power supply unit 50 toward the inside of the case 31 toward the lower side of the upper cap 32. do. However, the fixed terminal 42 of one side protrudes much longer than the fixed terminal 41 of the other side, so that the detonation wire 44 connecting the two ends thereof forms a diagonal direction with the length direction of the case 31. Is formed. In particular, the outer circumference of the fixed terminal 42 is formed to be protected by being inserted into the guide 33 extending in the same shape as the upper cap to the lower side of the upper cap 32. That is, both sides of the upper cap 32 are injected so that the fixed terminals 41 and 42 can be inserted in parallel with each other, and the guide is extended to the lower side of the fixed terminal. will be.

On the other hand, the upper end of the upper cap 32, the upper end of the fixed terminal (41, 42) is a Kennon plug type (Cannon plug type) a predetermined section is formed, the end of the wire connected to the power supply 50 It is configured to be connected. At the end of the wires (51, 52) is formed a connector 53 that can be easily removable to the upper end of the fixed terminal (41, 42), the connector 53 is a fixed terminal protruding in the Kennon plug type It surrounds the upper end of (41, 42) and is formed so as to slide up and down and detachable. And in the state in which the connector 53 is connected to the upper ends of the fixed terminals 41 and 42, the cylindrical vinyl cap 54 is covered so that the contact is protected.

In the case of the metal expander cartridge 30 for a rock according to the present invention, since the detonation wire 44 is positioned in an inclined direction as described above, the section in which the detonation wire 44 is positioned in the case 31 is a conventional method. It is greatly expanded than if.

In addition, a cylindrical pressure tube 35 formed of a material having a high strength to withstand pressure is inserted into the inner circumference of the case 31 in the section where the detonation wire 44 is positioned. The reason for placing the pressure tube 35 in the middle of the case 31 is that the detonation wire is among the metal expanders 60 filled in the case 31 when a large current is applied to the detonation wire 44. The case 31 in the section in which the detonation wire 44 is positioned before the reaction heat is transferred to the metal expander 60 positioned first at the lower side of the case 31 is first reacted with the metal expander 60 adjacent to the 44. ) Is to prevent destruction. The pressure tube 35 is preferably formed of a stainless material having a high corrosion resistance.

That is, the portion of the case 31 in the section where the detonation wire 44 is located is reinforced with the pressure tube 44, so that the destruction of the case 31 in the section in which the detonation wire 44 is located is delayed. The plasma channel generated in the detonation wire 44 is configured to be guided to the metal expander 60 positioned below the case 31.

On the other hand, the lower side of the case 31 is interposed between the inner surface of the lower cap 34 and the disc 36 is elastically supported by the spring 37, the metal expander 60 to the upper side of the disc 36 ) Is configured to contain. That is, the load of the metal expanding agent 60 is elastically supported by the spring 47. The reason for supporting the load of the metal expander 60 by using the spring 37 is that the metal expander (in the case of storing and moving the cartridge 30 filled with the metal expander 60 in the case 31 above) When the air gap is formed on the upper side of the case 31 by filling the pores between the particles of 60 with the fine particles, the disc 36 rises with the elasticity of the spring 37. This is to prevent the phenomenon in which the air layer is formed on the case 31 while being raised inside the case 31.

And although not shown in the drawing on the coupling surface of the upper cap 32 and the lower cap 34 mounted on the upper and lower portions of the case 31 is made sealing treatment for watertight maintenance.

Referring to the method of use and operation of the cartridge of the rock metal mixture configured as described above are as follows.

The cartridge 30 is disposed in the blast hole 70 formed by using equipment such as a punching machine at a position where blasting is required, and a fixed terminal 41 protruding from the upper cap 32 of the cartridge 30. The connector 53 of the wires 51 and 52 connected from the power supply unit 50 is connected to the upper end of the 42.

The power supply unit 50 and the switch for controlling a large current to be applied to the cartridge 30 are wired 51 and 52 so that the cartridge 30 can be exploded from a remote location.

When the person in charge of explosion confirms safety by turning on the switch, the power supply of the power supply unit 50 is led to the detonation wire 44, so that the detonation wire 44 is discharged with a high-voltage large current to form a plasma channel. The high temperature and high pressure energy is transferred to the metal expander 20 around the detonation wire 44. Therefore, the metal expander 20 filled in the case 31 around the detonation wire 44 is expanded in the process of being oxidized and reacted by a high temperature reaction heat to emit high heat, and this energy expands the blast hole and explodes. The object is crushed.

However, in this process, the cartridge 30 according to the present invention has a pressure tube 35 having a higher strength than the case 31 on the inner wall of the case 31 in the section where the detonation wire 44 is located, Unlike the prior art, the destruction of the case 31 in the section in which the detonation wire 44 is located is delayed so that the metal expander 20 filled in the lower part of the case 31 can be reacted normally. It is guided to the lower side of the case 31. Therefore, energy close to the theoretical explosion pressure that can be obtained from the metal expanding agent 20 filled in the case 31 can be obtained.

Since the detonation wire 44 is formed to be elongated in a diagonal direction, the surface area of the metal expanding agent 44 that can initially receive high-temperature reaction heat from the detonation wire 44 is widened.

In the case of the rock metal mixture cartridge 30 according to the present invention, the load of the metal expanding agent 20 filled in the case 31 is elastically supported by the spring 37, so that the metal expanding agent is filled. In the process of storing and moving the cartridge 30, even when fine metal particles are input between the pores of the metal expander accommodated in the case 31, the formation of an air layer on the upper part of the case 31 is suppressed.

Workability is improved by easily connecting the connector 53 of the wires 51 and 52 to the fixed terminals 41 and 42 of the cartridge 30 at the explosion operation.

The present invention constituted as described above is wrapped around the case in which the detonation wire is located in the cartridge filled with the rock metal mixture, the pressure tube, so that most of the metal expander filled in the case is reacted to obtain a greater expansion pressure. In addition, since the detonation wire is positioned in a diagonal direction relative to the axial direction of the case, there is a great advantage that the volume of the metal mixture in which reaction heat is initially transmitted from the detonation wire is increased. In addition, during the storage and movement of the cartridge filled with the metal mixture, there is an advantage that the air layer is prevented from being formed on the upper side of the case because the load of the metal mixture is supported by the spring.

Claims (4)

A case 31 in which a metal expander 20 mixed with metal salt, metal powder, and metal oxide is accommodated, upper and lower caps 32 and 34 which block upper and lower portions of the case, and the upper cap 32 Fixed current 41 and 42 for inputting a current through the current and a large current can be discharged to the metal expander 20 accommodated in the case 31 by being connected to the fixed terminals 41 and 42. In the rock-forming metal expander cartridge structure is formed so that the wire 44 to be formed, and the large current provided from the power supply unit 50 is input through the wire to both ends of the detonation wire, When a large current is applied to the detonation wire 44, the case 31 of the section adjacent to the detonation wire 44 is first destroyed by high heat and shock wave energy, thereby delaying the detonation wire 44. In order to guide the plasma channel generated at the lower side of the case 31, the pressure tube 35 made of a material having high strength to withstand pressure is formed on the inner wall of the case 31 in the section where the detonation wire 44 is located. The cartridge structure of the metal expander for rock, which is further formed. The method of claim 1, The lower inner space of the case 31 is interposed between the disc 36 is elastically supported by the spring 37, the wave characterized in that the metal expander 20 is configured to be received from the upper side of the disc 36 The cartridge structure of the metal expanding agent for cancer. The method according to claim 1 or 2, The two fixed terminals 41 and 42 protrude toward the inside of the case 31 to the lower side of the upper cap 32 which blocks the upper portion of the case 31, but the fixed terminal 42 of one side has a length. The other long fixed terminal 41 is protruded relatively short in length, so that the detonation wire 44 connected to both fixed terminals 41 and 42 is formed in a diagonal direction with respect to the longitudinal direction of the case 31. A cartridge structure of a metal expander for rock. The method according to claim 1 or 2, The upper side of the upper cap 32 is characterized in that the upper end of the fixed terminal 41 is protruded in the form of a Kennon plug type for allowing the wires (51, 52) connected to the power supply unit 50 to be detachable Cartridge structure of metal expander for rock.

Images