EP1828079A1 - Cartridge of metal expansion cell for rock destruction - Google Patents

Cartridge of metal expansion cell for rock destruction

Info

Publication number
EP1828079A1
EP1828079A1 EP05704493A EP05704493A EP1828079A1 EP 1828079 A1 EP1828079 A1 EP 1828079A1 EP 05704493 A EP05704493 A EP 05704493A EP 05704493 A EP05704493 A EP 05704493A EP 1828079 A1 EP1828079 A1 EP 1828079A1
Authority
EP
European Patent Office
Prior art keywords
casing
cartridge
metallic
expansion cell
explosion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05704493A
Other languages
German (de)
French (fr)
Inventor
Yong-So CHO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Swell Tech Co Ltd
Original Assignee
Swell Tech Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Swell Tech Co Ltd filed Critical Swell Tech Co Ltd
Publication of EP1828079A1 publication Critical patent/EP1828079A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
    • F42D1/04—Arrangements for ignition
    • F42D1/045—Arrangements for electric ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D3/00—Particular applications of blasting techniques
    • F42D3/04—Particular applications of blasting techniques for rock blasting
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B33/00—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06D—MEANS FOR GENERATING SMOKE OR MIST; GAS-ATTACK COMPOSITIONS; GENERATION OF GAS FOR BLASTING OR PROPULSION (CHEMICAL PART)
    • C06D5/00—Generation of pressure gas, e.g. for blasting cartridges, starting cartridges, rockets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/10—Initiators therefor
    • F42B3/11—Initiators therefor characterised by the material used, e.g. for initiator case or electric leads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/10—Initiators therefor
    • F42B3/12—Bridge initiators
    • F42B3/124—Bridge initiators characterised by the configuration or material of the bridge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
    • F42D1/02—Arranging blasting cartridges to form an assembly

Definitions

  • the present invention relates to a cartridge of a metal expansion cell for
  • reaction acceleration agent that accelerates an oxidization reaction
  • the metallic salt there are Fe(NO 3 )3, Cu(NO 3 ) 2 , Ba(NO 3 ) 4 , Mn(NO 3 ) 4 ,
  • the metallic oxide there are Fe 2 O 3 ,
  • a reduction agent such as Al, Na, K, Li,
  • Mg, Ca, Mn, Ba, Cr, Si, etc. is used.
  • the oxidization acceleration agent there are NaSO 4 , MgSO 4 , FeSO 4 ,
  • borate, nitrate, sulfate, etc. is melted into glycerin such as ethylene glycol and
  • Figure 4 is a view illustrating the construction of a conventional
  • cartridge 10 of a metallic expansion cell for a rock destruction includes a
  • cylindrical casing 11 for storing a metallic oxide therein, an upper cap 12 and a
  • expansion cell 20 is fast expanded for thereby increasing the explosion hole
  • the casing is destructed before the metallic oxide stored at the lower side
  • micro particle oxides fill the
  • cylindrical casing get hardened, and an air layer is formed at the upper side of
  • pressure tube is installed in the interior of the casing in a section in which the
  • a cartridge of a metallic expansion cell for a rock destruction comprising a
  • explosion wire and is formed of a certain material having a strong strength
  • wire is guided in the direction of the casing .
  • Figure 1 is a cross sectional view illustrating a cartridge of a metal
  • Figure 2 is a disassembled perspective view illustrating a cartridge
  • Figure 3 is a view of a state that a cartridge of a metal expansion cell for
  • Figure 4 is a view for describing a conventional art.
  • Figure 1 is a cross sectional view illustrating a cartridge of a metal
  • FIG. 2 is a d isassembled perspective view i llustrating a cartridge a ccording to the
  • Figure 3 is a view of a state that a cartridge of a metal
  • expansion cell for a rock destruction is used according to the present invention.
  • reference numeral 30 represents a cartridge of a metallic
  • the cartridge 30 includes a cylindrical and longitudinal casing 31 , an upper cap
  • a pair of fixed protrusions 41 and 42 are protruded from the lower side of
  • the fixed terminal 42 of one side is
  • the fixed terminal 42 fixed longer is inserted into a guide 33 extended integrally
  • the connector 53 surrounds the upper ends of the
  • a vinyl cap 54 is capped on a contact point in
  • the explosion wire 44 is arranged at a
  • the pressure tube 35 is installed at the intermediate portion of the casing 31 for the reason that when the large current is applied to the explosion
  • pressure tube 35 is preferably formed of a stainless material having a strong
  • a circular plate 36 is disposed at the lower inner side of the casing 31
  • the weight of the metallic expansion cell 60 is the weight of the metallic expansion cell 60.
  • the explosion hole 70 is formed at an explosion
  • supply unit 50 and the cartridge 30 includes the electric cables 51 and 52, so
  • cartridge 30 can be exploded at a remote site.
  • supply unit 50 is supplied to the explosion wire 44, and the large current of high
  • the explosion wire 44 based on a high temperature reaction heat and is oxidized
  • explosion wire 44 is longitudinally and diagonally formed, so
  • expansion cell 20 filled in the interior of the casing 31 is elastically supported by
  • explosion wire is positioned in the diagonal direction, the volume of the metallic
  • the metallic mixture is supported by the spring during the storage and

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)

Abstract

The present invention relates to a cartridge of a metallic expansion cell (30) for a rock destruction which includes a pressure tube that is installed at an inner wall of the casing (31) in the section of the explosion wire (44) and is formed of a certain material having a strong strength capable of enduring against a certain level pressure so that it is possible to prevent an earlier destruction of the casing (31) of the portion near the explosion wire (44) by a high temperature heat and impact wave energy when a large current is applied to the explosion wire (44), and a plasma channel formed by the explosion wire is guided in the direction of the casing .

Description

Title: CARTRIDGE OF METAL EXPANSION CELL FOR
ROCK DESTRUCTION
Technical Field
The present invention relates to a cartridge of a metal expansion cell for
a rock destruction, and in particular to a cartridge of a metal expansion cell for a
rock destruction in which a discharge wire is installed at an intermediate portion
of a casing for applying a high voltage, and a pressure tube is installed in the
interior of the casing in a section in which the discharge wire is installed so that
a plasma channel generated by a large current applied from the discharge wire
effectively influences a metal expansion cell installed at a lower side of the
casing.
Background Art
Generally, a certain explosive has been generally used for applying a
strong i mpact to a b ase rock o r a rock a nd d estructing the same i n o rder to
enhance an efficiency of work such as a tunnel excavation, a housing complex
construction in a city, an explosion at a rock cutting site, a underground
construction, a subway construction, etc.
In the conventional art, explosives or dynamites h ave been generally
used for an explosion. However, in the case of an explosive such as a dynamite, there is a certain big danger that they may be exploded due to an inattention, an
impact, etc. during a storage and transfer. Once it is exploded, a large explosion
sound may occur, so that a surrounding environment is largely influenced.
Recently, in stead of an explosive or dynamite as an explosion material
for a rock destruction, a certain fast expansion metal compound has been
developed, in which a current is fast discharged to a metal oxide that generates
an oxidation reaction, so that a certain medium is expanded for thereby
generating a h eat d uring a n o xidation reaction of a n e lectrolysis a nd a m etal
oxide stored in a cartridge for thereby influencing its surrounding element,
whereby a certain object is exploded. The Korean patent registration laid-open
No. 213577 and the Korean patent l aid-open N o. 2003-0006083 d isclose the
techniques concerning the above fast expansion metal compound.
Namely, the above fast expansion metal compound has been fabricated
by mixing a metallic salt that is an oxidizer, a metallic powder that is oxidized by
a metallic salt and has a volume increasing due to a heat generation reaction,
and a reaction acceleration agent that accelerates an oxidization reaction
between the metallic salt and metal powder.
As the metallic salt, there are Fe(NO3)3, Cu(NO3)2, Ba(NO3)4, Mn(NO3) 4,
Mg(NO3), KNO3, NaNO3, Ca(NO3) 2, etc. As the metallic oxide, there are Fe2O3,
Fe2O4, CuO, MnO2, Ni2O3, PbO, etc.
In addition, as the metal powder, a reduction agent such as Al, Na, K, Li,
Mg, Ca, Mn, Ba, Cr, Si, etc. is used. As the oxidization acceleration agent, there are NaSO4, MgSO4, FeSO4,
MgSO4, NiSO4, CsSO4, etc.
As an electric spark induction electrolyte for accelerating an oxidation
between the metallic salt and metal powder, a small amount of ammonium
borate, nitrate, sulfate, etc. is melted into glycerin such as ethylene glycol and
alcohol.
Namely, the fast expansion metallic compound in which the above
materials are mixed by proper mounts are stored in a vinyl paper or cartridge by
a small amount and are positioned at an explosion hole, so that a large current
is applied to a container that has the fast expansion metallic compound in
accordance with a remote switch operation. However, when the fast expansion
metallic compound is stored and used in the vinyl paper, a certain set pattern
and standardization cannot be achieved. Therefore, the fast expansion metallic
compound has been generally stored and used in the cartridge.
Figure 4 is a view illustrating the construction of a conventional
cartridge of a metallic expansion cell for a rock destruction. The conventional
cartridge 10 of a metallic expansion cell for a rock destruction includes a
cylindrical casing 11 for storing a metallic oxide therein, an upper cap 12 and a
lower cap 13 for capping the upper and lower sides of the casing 11 , a terminal
14 for applying a large current to a medium disposed in the interior of the casing
11 , and a power supply unit 17 and an electric cable 16 for supplying the current
to the terminal 14. A certain gap is formed between the terminals 14 of both sides. An explosion wire 15 formed of an aluminum wire, etc. is connected
between the ends of the terminal 14.
Therefore, the large current flows between the terminals 14 based on a
switching operation of the power supply unit 17, and the explosion wire 15 is
discharged for thereby forming a plasma channel. The volume of the metallic
expansion cell 20 is fast expanded for thereby increasing the explosion hole
during a flame oxidation reaction of the metallic expansion cell 20 by a high
temperature heat and energy occurring at the plasma channel.
In the case of the conventional cartridge storing the metallic expansion
cell therein, since the metallic oxide near the explosion wire first generates an
oxidization reaction at the time when a high pressure occurs at the explosion
wire, the casing is destructed before the metallic oxide stored at the lower side
of a cylindrical and longitudinal casing is fully reacted. Therefore, since only the
metallic e xpansion c ell p ositioned a 11 he u pper s ide o f t he c asing a mong t he
metallic expansion cell stored in the cartridge reacts, it is impossible to obtain
an enough expansion pressure.
In addition, since the explosion wire is connected shorter in the
diameter direction of the cylindrical casing, the discharging efficiency with
respect to the metallic oxide is not enhanced. In the case of the conventional
cartridge of the metallic oxide for a rock destruction, micro particle oxides fill the
gaps between the oxides positioned at the lower side of the casing during the
storage of the metallic oxide in the interior of the cylindrical casing or the time needed for the movement is passed, so that the oxides at the lower side of the
cylindrical casing get hardened, and an air layer is formed at the upper side of
the casing. Therefore, the performance during the discharge with the explosion
wire and the oxidation reaction is decreased.
Disclosure of Invention
Accordingly, it is an object of the present invention to provide a cartridge
of a metallic expansion cell for a rock d estruction capable of overcoming the
problems encountered in the conventional art.
It is another object of the present invention to provide a cartridge of a
metallic expansion cell for a rock destruction in which a discharge wire is
installed at an intermediate portion of a casing for applying a high voltage, and a
pressure tube is installed in the interior of the casing in a section in which the
discharge wire is installed so that a plasma channel generated by a large
current applied from the discharge wire effectively affects a metal expansion cell
installed at a lower side of the casing.
To achieve the above objects, in a cartridge of a metallic expansion cell
for a rock destruction in which a metallic expansion cell mixed with metallic salt,
metallic powder, metallic oxide, etc. is received in a casing, and an explosion
wire is formed in the metallic expansion cell stored in the interior of the casing
for discharging large current, and the large current supplied from the power
supply unit is inputted into the both ends of the explosion wire, there is provided a cartridge of a metallic expansion cell for a rock destruction, comprising a
pressure tube that is installed at an inner wall of the casing in the section of the
explosion wire and is formed of a certain material having a strong strength
capable of enduring against a certain level pressure so that it is possible to
prevent a n e arlier d estruction o f t he c asing o f t he portion near t he e xplosion
wire by a high temperature heat and impact wave energy when a large current
is applied to the explosion wire, and a plasma channel formed by the explosion
wire is guided in the direction of the casing .
Brief Description of Drawings
The present invention will become better understood with reference to
the accompanying drawings which are given only by way of illustration and thus
are not limitative of the present invention, wherein;
Figure 1 is a cross sectional view illustrating a cartridge of a metal
expansion cell for a rock destruction according to the present invention;
Figure 2 is a disassembled perspective view illustrating a cartridge
according to the present invention;
Figure 3 is a view of a state that a cartridge of a metal expansion cell for
a rock destruction is used according to the present invention; and
Figure 4 is a view for describing a conventional art.
Best Mode for Carrying Out the Invention The construction a nd operation of a cartridge of a metallic expansion
cell for a rock destruction according to the present invention will be described
with reference to the accompanying drawings.
Figure 1 is a cross sectional view illustrating a cartridge of a metal
expansion cell for a rock destruction according to the present invention, Figure
2 is a d isassembled perspective view i llustrating a cartridge a ccording to the
present invention, and Figure 3 is a view of a state that a cartridge of a metal
expansion cell for a rock destruction is used according to the present invention.
In the drawings, reference numeral 30 represents a cartridge of a metallic
expansion cell for a rock destruction according to the present invention. Here,
the cartridge 30 includes a cylindrical and longitudinal casing 31 , an upper cap
32 that caps an opened upper side of the casing 31 and has fixed terminals 41
and 42 for receiving current, and a lower cap 34 for capping an opened lower
side of the casing 31.
A pair of fixed protrusions 41 and 42 are protruded from the lower side of
the upper cap 32 in the direction of the interior of the casing 31 for inputting the
powers (+) and (-) of a power supply unit 50. The fixed terminal 42 of one side is
extended longer than the fixed terminal 41 of one side, so that the explosion
wire 44 connecting both ends of the same is formed diagonal with respect to the
longitudinal direction of the casing 31. In particular, the outer circumference of
the fixed terminal 42 fixed longer is inserted into a guide 33 extended integrally
with the upper cap at the lower side of the upper cap 32 and is protected thereby. Namely, the both sides of the upper cap 32 are extended so that the
fixed terminals 41 and 42 are inserted in parallel from each other. The guide is
downwardly and longitudinally extended from the side in which the longer
terminal is inputted.
The upper ends of the fixed terminals 41 and 42 a re protruded in the
direction of the upper cap 32 in a certain section based on a cannon plug type,
so that the end of the electric cable connected with the power supply unit 50
gets connected. The ends of the electric cables 51 and 52 are connected with a
connector 53, respectively, that is easily detachable from the upper ends of the
fixed terminals 41 and 42. The connector 53 surrounds the upper ends of the
fixed terminals 41 and 42 protruded in the cannon plug type and is detachably
slidable up and down. In addition, a vinyl cap 54 is capped on a contact point in
a state that the connector 53 is connected with the upper ends of the fixed
terminals 41 and 42.
In the cartridge 30 of the metallic expansion cell for a rock destruction
according to the present invention, the explosion wire 44 is arranged at a
certain inclination angle, the section in which the explosion wire 44 is positioned
at the casing 31 is more widened as compared with the conventional art.
In addition, a cylindrical pressure tube 35 formed of a certain high
strength material capable of enduring a certain pressure is insert-injected from
an inner circumferential surface of the casing 31 in the section of the explosion
wire 44. The pressure tube 35 is installed at the intermediate portion of the casing 31 for the reason that when the large current is applied to the explosion
wire 44, the metallic expansion cell 60 near the explosion wire 44 among the
metallic expansion cells 60 filled in the interior of the casing 31 is first reacted,
so that it is possible to prevent the casing 31 in the section of the explosion wire
44 from being first destructed before the reaction heat is transferred to the
metallic e xpansion c ell 60 positioned a 11 he I ower s ide o f t he c asing 3 1. The
pressure tube 35 is preferably formed of a stainless material having a strong
anti-corrosion property.
Namely, the portion of the casing 31 in the section of the explosion wire
44 is supported by the pressure tube 44, so that the destruction of the casing 31
in the section of the explosion wire 44 is delayed, and the plasma channel
generated by the explosion wire 44 is guided and extended up to the metallic
expansion cell 60 at the lower side of the casing 31.
A circular plate 36 is disposed at the lower inner side of the casing 31
and is elastically supported by the inner surface of the lower cap 34 and the
spring 37, and a metallic expansion cell 60 is stored at the upper side of the
circular plate 36. Namely, the spring 47 elastically supports the weight of the
metallic expansion cell 60. The weight of the metallic expansion cell 60 is
supported using the spring 37 for the following reasons. The medium is moved
up in the casing 31 as the circular plate 36 is moved up by an elastic force of
the spring 37, so that it is possible to prevent the formation of the air layer at the
upper side of the casing 31 as compared to the conventional art in which the air layer is formed at the upper side of the casing 31 as the micro metallic particles
are filled in the spaces between the particles of the metallic expansion cell 60.
In addition, the engaging portions between the upper cap 32 and the
lower cap 34 engaged at the upper and lower sides of the casing 31 are sealed.
The method of use and operation of the cartridge of a metallic expansion
cell for a rock destruction according to the present invention will be described.
In the cartridge 30, the explosion hole 70 is formed at an explosion
position using certain equipment such as a drilling machine, etc. The connector
53 of the electric cables 51 and 52 extended from the power supply unit 50 is
connected with the upper sides of the fixed terminals 41 and 42 extended from
the upper cap 32 of the cartridge 30.
The switch for controlling the supply of the large current to the power
supply unit 50 and the cartridge 30 includes the electric cables 51 and 52, so
that the cartridge 30 can be exploded at a remote site.
When an explosion manager turns on the switch, the power of the power
supply unit 50 is supplied to the explosion wire 44, and the large current of high
voltage is discharged to the explosion wire 44, and a plasma channel is formed.
A high temperature heat and high pressure energy are transferred to the
metallic expansion cell 20 near the explosion wire 44. Therefore, the metallic
expansion cell 20 filled in the interior of the casing 31 is reacted with respect to
the explosion wire 44 based on a high temperature reaction heat and is oxidized
and expanded for thereby outputting a high temperature heat and energy. The above energy expands the explosion hole for thereby destructing the explosion
object.
Since the pressure tube 35 having a strength higher than the casing 31 is
installed at the inner wall of the casing 31 in the section of the explosion wire 44
in the cartridge 30 according to the present invention, the destruction of the
casing 31 in the section of the explosion wire 44 is delayed so that a normal
reaction is performed even at the metallic expansion cell 20 filled at the lower
side of the casing 31 as compared to the conventional art. In addition, the
plasma c hannel i s g uided t o t he I ower s ide o f t he c asing 3 1. Therefore, i t i s
possible to obtain energy theoretically similar with the explosion energy
obtained by the metallic expansion cell 20 filled in the interior of the casing 31.
Since the explosion wire 44 is longitudinally and diagonally formed, so
that the surface area of the metallic expansion cell 44 is widened for thereby
receiving a high temperature reaction heat at the initial stage from the explosion
wire 44.
In the case of the cartridge 30 of a metallic expansion cell for a rock
destruction according to the present invention, since the weight of the metallic
expansion cell 20 filled in the interior of the casing 31 is elastically supported by
the spring 37, even when micro particles are inserted into the gaps between the
metallic expansion cell stored in the interior of the casing during the storage and
movement of the cartridge 30 having the metallic expansion cell therein, the air
layer is not formed at the upper side of the casing 31. The method for connecting the connector 53 of the electric wires 51 and
52 with the fixed terminals 41 and 42 of the cartridge 30 is easily performed at
the explosion work site, so that the workability is enhanced.
Industrial Applicability
As described above, in the cartridge in which a metallic expansion cell for
a rock destruction is filled according to the present invention, the intermediate
portion of the casing having the explosion wire therein is surrounded by the
pressure tube, so that almost metallic expansion cells filled in the interior of the
casing are reacted for thereby achieving a larger expansion pressure. As the
explosion wire is positioned in the diagonal direction, the volume of the metallic
mixture to which a reaction h eat i s t ransferred from the explosion wire at a n
initial stage is more largely increased, as compared with that the explosion wire
is positioned in the axial direction of the casing. In addition, since the weight of
the metallic mixture is supported by the spring during the storage and
movement of the cartridge filled with the metallic mixture, it is possible to
prevent the air layer from being formed at the upper side of the casing.
As. the present invention may be embodied in several forms without
departing from the spirit o r essential characteristics thereof, it s hould also be
understood that the above-described examples are not limited by any of the
details of the foregoing description, unless otherwise specified, but rather should be construed broadly within its spirit and scope as defined in the
appended claims, a nd therefore a ll c hanges a nd modifications that fall within
the meets and bounds of the claims, or equivalences of such meets and bounds
are therefore intended to be embraced by the appended claims.

Claims

Claims:
1. In a cartridge of a metallic expansion cell for a rock destruction in which
a metallic expansion cell mixed with metallic salt, metallic powder, metallic oxide,
etc. is received in a casing, and an explosion wire is formed in the metallic
expansion cell stored in the interior of the casing for discharging large current,
and the large current supplied from the power supply unit is inputted into the
both ends of the explosion wire, a cartridge of a metallic expansion cell for a
rock destruction, comprising:
a pressure tube 35 that is installed at an inner wall of the casing 31 in
the section of the explosion wire and is formed of a certain material having a
strong strength capable of enduring against a certain level pressure so that it is
possible to prevent an earlier destruction of the casing 31 of the portion near the
explosion wire 44 by a high temperature heat and impact wave energy when a
large current is applied to the explosion wire 44, and a plasma channel formed
by the explosion wire is guided in the direction of the casing 31.
2. The cartridge of claim 1 , wherein a circular plate 36 is disposed in an
inner space of the lower side of the casing 31 and is elastically supported by a
spring 37, wherein the casing 31 is designed to receive the metallic expansion
cell 60 from the upper side of the circular plate 36.
3. The cartridge of either claim 1 or claim 2, wherein two fixed terminals 41 and 42 are protruded in the direction of the inner side of the casing 31 at the
lower side of the upper cap 32 adapted to cap the upper side of the casing 31 ,
and the fixed terminal 42 of one side is formed longer, and the fixed terminal 41
of the other side is formed shorter, and the explosion wire 44 connected with the
fixed terminals 41 and 42 is formed diagonally with respect to the longitudinal
direction of the casing 31.
4. The cartridge of either claim 1 or claim 2, wherein the upper side of the
fixed terminal is protruded in a cannon plug type for a detachable engagement
of the electric wire connected with the power supply unit at the upper side of the
upper cap 32.
EP05704493A 2004-11-15 2005-01-13 Cartridge of metal expansion cell for rock destruction Withdrawn EP1828079A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020040092920A KR20060047085A (en) 2004-11-15 2004-11-15 Cartidge of metal expansion cell for rock destruction
PCT/KR2005/000108 WO2006052048A1 (en) 2004-11-15 2005-01-13 Cartridge of metal expansion cell for rock destruction

Publications (1)

Publication Number Publication Date
EP1828079A1 true EP1828079A1 (en) 2007-09-05

Family

ID=36336696

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05704493A Withdrawn EP1828079A1 (en) 2004-11-15 2005-01-13 Cartridge of metal expansion cell for rock destruction

Country Status (7)

Country Link
US (1) US20090078143A1 (en)
EP (1) EP1828079A1 (en)
JP (1) JP4620740B2 (en)
KR (1) KR20060047085A (en)
CN (1) CN100567224C (en)
CA (1) CA2586957A1 (en)
WO (1) WO2006052048A1 (en)

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KR20060047085A (en) 2006-05-18
JP4620740B2 (en) 2011-01-26
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JP2008520942A (en) 2008-06-19
US20090078143A1 (en) 2009-03-26
CA2586957A1 (en) 2006-05-18
CN100567224C (en) 2009-12-09
WO2006052048A1 (en) 2006-05-18

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