Safe seismic prospecting electric detonator

Abstract

The invention is a safe seismic prospecting electric detonator, and only one metal wire is used in the firing part, wherein, a tube is arranged in a bayonet of a hydraulic clip machine, a rubber stopper with a copper bridge wire is inserted into the tube, the chip machine is started after the positions of a subassembly and a pyrophoric part are adjusted, and the bayonet is contracted to cause the subassembly and the pyrophoric part to closely fit together without using an ignescent again. The invention can resist any damage caused by various DC, AC stray current and static, thunder and radio frequency current. The seismic prospecting electric detonator provided by the invention can be used together with special detonating device, which improves the initiation energy greatly and gets rid of the damage of detonator accidental explosion caused by stray current, static, thunder, radio frequency current and the like, and is especially applicable to severely impaired occasions with stray current, static and the like.

Description

technical field [0001] The invention relates to a detonator, especially a safe electric detonator for seismic exploration. Background technique [0002] At present, the seismic exploration electric detonators widely used at home and abroad mainly use the joule heat of the bridge wire resistance to detonate the primer coated on the bridge wire as the initiation source, and most of the electric detonators used for seismic exploration use foot wire The nickel-chromium alloy resistance wire is welded in between, and the solder bridge wire is generally made of tin-lead solder. The primer coated on the bridge wire is generally a mixture of trinitroresorcinol lead and other powders. The safety current of this electric detonator is 0.18A. It is an extremely unsafe electric detonator. It is extremely unsafe and easy to self-explode under the conditions of static electricity, stray current and strong radio frequency. Chinese application (patent) No. CN 200420032010.5 publication (ann...

AI Technical Summary

Problems solved by technology

The safety current of this electric detonator is 0.18A. It is an extremely unsafe electric detonator. It is extremely unsafe and easy to explode under the conditions of static electricity, stray current and strong radio frequency.

Chinese application (patent) No. CN 200420032010.5 publication (announcement) No. CN 2736734 The firing element of these technologies is to adopt thin copper bridge wire, but one kind of conductive plug it adopts is a penetrating conductive rubber plug, and this structure is not suitable for use For large-scale production, the other is to coat the surface of the plastic plug with conductive glue. This kind of plug has poor manufacturability and cannot ensure that the resistance between the feet and shells is in the range of 500KΩ~1MΩ. Its antistatic performance is very poor.

The two kinds of plugs used in this technology have no positioning platform, which cannot guarantee the distance between the bridge wire and the reinforcing cap, resulting in a large difference in action time. More importantly, it uses D·S and PbN 6 , not suitable for copper pipe assembly, and the oil exploration team needs copper shell products, which is easy to cause accidents

Images