FIELD: blasting operations.
SUBSTANCE: explosive cartridge consists of housing (case without bottom) in which electric ignition assembly, lead charge and small-size detonating primer are arranged. Detonating primer and lead charge includes explosive charge enclosed in the cover in the form of a cap. Ratio of linear density of detonating primer cover head (product of head material density by its thickness) to linear density of explosive charge of lead charge (product of charge density by its height) is within 0.3 to 0.6. There is a gap between detonating primer and lead charge. One or more holes interconnecting the gap to environment are made in housing wall in the gap area. Heads of covers of detonating primer and lead charge, which face each other, are made from metal or alloy having low value (less than 20·106 kg/m2·s) of acoustic stiffness (product of density by sound velocity), e.g. aluminium. Thickness of detonating primer cover head is 0.4-0.6 mm.
EFFECT: improving cartridge operation reliability.
1 dwg
Title | Year | Author | Number |
---|---|---|---|
BLASTING CARTRIDGE FOR SHOOTING-BLASTING OPERATIONS | 2003 |
|
RU2247924C1 |
PRIMER DETONATOR BASED OF HIGH EXPLOSIVE | 1999 |
|
RU2161769C2 |
IMPACT DETONATING DEVICE BASED ON HIGH EXPLOSIVE | 2021 |
|
RU2780991C1 |
DETONATOR | 1998 |
|
RU2132532C1 |
DETONATING CAP BASED ON HIGH-EXPLOSIVE AGENT | 2009 |
|
RU2413166C1 |
IMPRESSION DETONATOR AND ITS MANUFACTURING METHOD | 2021 |
|
RU2772413C1 |
LASER FULMINATING DETONATOR | 2020 |
|
RU2750750C1 |
BLASTING CAP FOR BLASTING OPERATIONS | 2000 |
|
RU2215975C2 |
ELECTRIC DETONATOR FOR SHOOTING-BLASTING OPERATIONS PROTECTED AGAINST STRAY CURRENTS | 2016 |
|
RU2638073C1 |
TWO-WAY PYROTECHNICAL RELAY | 1997 |
|
RU2124690C1 |
Authors
Dates
2011-09-20—Published
2010-04-09—Filed