Cartridge Of Metal Expansion Cell For Rock Destruction

Abstract

The present invention relates to a cartridge of a metallic expansion cell for a rock destruction which includes 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 an earlier destruction of the casing of the portion near the explosion 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.

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 .