CN102491861A

CN102491861A - Novel delay element

Info

Publication number: CN102491861A
Application number: CN2011103721677A
Authority: CN
Inventors: 马志钢; 颜事龙; 孙倩; 王瑾; 刘媛媛; 马勇; 王乐; 王超; 李金涛
Original assignee: Anhui University of Science and Technology
Current assignee: Anhui University of Science and Technology
Priority date: 2011-11-21
Filing date: 2011-11-21
Publication date: 2012-06-13
Also published as: CN102964188B; CN102964188A

Abstract

The invention relates to a novel delay element, which relates to a structure of the delay element and a powder packaging and producing process. Glue is added into delay powder so that the delay powder is made into paste which can be applied into a groove on a plastic strip, the plastic strip is adhered with another plastic strip after the paste is dried, and accordingly, the delay element body is formed. The delay powder in the delay element body is uniform in density, stable in burning and fine in delay accuracy. Lead is omitted, so that lead pollution is avoided. The novel delay element is simple in manufacturing process, low in cost, can be used for millisecond, half-second and one-second delay detonators and delay devices in fireworks, fire or cartridges.

Description

A kind of novel delay element

Technical field

The invention belongs to civilian initiating equipment field, be specifically related to a kind of extension body structure and method of manufacture of novel texture, this extension body can be used for industry half second, second and millisecond delay cap.

Background technology

In engineering explosion,, usually adopt the delay blasting technology in order to reach better blasting effect, to be convenient to control the building collapsing direction and to reduce concussion of blasting.It is through between the ignition source and priming explosive in the detonator, settles an extension body to realize.The extension body is one section gunpowder that is wrapped.The extension body can be lighted such as ignition sources such as electricignition medicine head, plastics nonel tubes.Delay intravital gunpowder by ignition source light the back, combustion wave then propagates forward along gunpowder, when burning the extension body end, jets out flames, and ignites priming explosive, priming explosive is ignited the detonator secondary explosive powder charge below it again.Delay detonator has ms postpone, half second delay, second delay.

Present China second delay body is safety fuse normally, and half second delay then uses safety fuse sometimes, uses lead for retractable pencil extension body sometimes.The ms postpone body then is a lead for retractable pencil.The safety fuse powder charge is a black powder, and delay precision is bad, adds the easy moisture absorption of black powder, and delay precision is difficult to guarantee especially.

Lead for retractable pencil extension body is compared with original used imperial palace pipe dress delay powder delay element, and delay precision is far better, and its reason mainly is that delay powder consistent in density property is good everywhere in the lead for retractable pencil extension body.This has benefited from its ME.It is after in lead for retractable pencil, installing delay powder, repeatedly pulling forms, so delay powder density is even.And dress delay powder formula in the imperial palace pipe, every separately fixed high powder charge of detonator during powder charge, the explosive load consistence is poor; Pressure delay powder subsequently also is pipe pressing respectively in each, is difficult to guarantee that pressure is consistent, and the delay powder density unevenness is so delay precision is bad.

Though lead for retractable pencil extension body delay precision is good, it will consume great quantity of Pb, not only increases production cost, and after implementing explosion, lead can be retained in the explosion scene, thus contaminate environment.In addition, lead for retractable pencil extension system fabrication technique is loaded down with trivial details, and the lead pipe of the dress delay powder of at first will casting is adorned delay powder again in it, through repeatedly roll extrusion and more than 20 different apertures cover die drawings, processes at last.The technology that Chinese patent 03227877.2 comes to this.

Summary of the invention

The present invention adds glue in delay powder, make it be paste, and it is daubed in the groove on the plastic strip, after doing, is stained with another plastic strip, processes the extension body.Delay powder density is even in this extension body, flameholding, and delay precision is good.Do not use metallic lead, do not have Lead contamination.Its ME is simple, and is with low cost.Can be used for half second, second, ms postpone.

Technical scheme of the present invention

Before making the extension body, earlier section Que Ding delay powder composition and proportioning by required extensions, mix.In delay powder, add glue, with delay powder and glue mixing, process delay powder with the mixture of glue, be paste.It is spread upon as in the groove on the semicircle plastic strip of Fig. 1.After treating the solvent evaporates in the delay powder glue, on delay powder core 3 (Fig. 3), be coated with damp-proof paint, treat that lacquer is done after; Gluing on plastic strip is bonded at second half round plastic bar (Fig. 2) on the trough of belt plastic strip, the sealing delay powder; To accelerate its combustionvelocity and flame ability; Improve its ignition ability to priming explosive, doing it circular is in order to adapt to the shape of cap shell, so that pack cap shell into.Twine Pressure sensitive adhesive tape 4 (Fig. 3) outward, strengthen the globality of extension plastic strip.After doing, cut the long extension body (Fig. 4) of 10mm, be assembled into detonator, test its extension combustionvelocity, calculate required section other extension body length, cut the extension body, the detonator of packing into, the card middle part of the side gets final product.Can make electric firing extension half second, second and millisecond detonator (Fig. 5) thus, also can make non-electric nonel tube formula millisecond delay cap (Fig. 6).

Plastic strip 2 to 1 is thicker, be for medicine core center in the middle of end face, with over against strengthening cap fire-pulling hole and point of amorce or non-electric nonel tube.Do like this is in order to let the delay powder combustion flame accurately be ejected on the priming explosive, with the reliable ignition priming explosive; Also can improve simultaneously the safety that delay powder is lighted by igniting head and primacord.

The composition and the proportioning of adjustment delay powder can obtain different delay powder combustionvelocities, combine different extension bodies to cut length again, can obtain different sorts and other defer time of section.

Extension body structure of the present invention, ME past do not have.

Delay powder is the confection that combustible agent, oxygenant and granulating agent are formed, and wherein combustible agent content is 10%～20%, and oxygenate content is 80%～90%.Described combustible agent can be molybdenum, copper, antimony, silicon, zirconium, boron etc.; Oxygenant can be red lead (Pb ₃O ₄), PbO ₂Deng; Tackiness agent can be 4%～5% shellac solution, 1%～10% nitrocellulose solution.The delay powder of said delay element can adopt the delay powder that uses in the prior art, for example Pb ₃O ₄, SiFe, Sb ₂S ₃Series delay powder (being called red lead, ferrosilicon and ANTIMONY SULPHIDE series delay powder again), or red lead-silicon series postponing medicine, boron is that delay powder, zirconium and Zirconium-nickel alloy delay powder, manganese are that delay powder, molybdenum are that delay powder, tungsten are delay powder etc.

Description of drawings

Fig. 1 is a trough of belt plastic component synoptic diagram of the present invention;

Fig. 2 is a not trough of belt plastic component synoptic diagram of the present invention;

Fig. 3 is the present invention body section figure that delays; The 1st, the trough of belt plastic component; The 2nd, trough of belt plastic component not; The 3rd, the delay powder core; The 4th, at the external Pressure sensitive adhesive tape that twines of delaying;

Fig. 4 is an extension body sectional view of the present invention;

Fig. 5 is electrical fuze formula second, half second, the millisecond delay cap structural representation of assembling delay element of the present invention; 1 cap shell; 2 is the powder charge of detonator first pass hexogen; 3 is second time hexogen powder charge; The 4th, the priming explosive powder charge; The 5th, strengthening cap; The 6th, extension body of the present invention; The 7th, electrical fuze; The 8th, plastic plug.

Fig. 6 is to use the nonel tube formula millisecond delay cap structural representation of delay element of the present invention.1～6 is the same with Fig. 5, and the 7th, primacord; The 8th, stopper.

Embodiment:

Make trough of belt plastic strip 1 and trough of belt plastic strip 2 not, every long 2m, φ 5.0mm-5.5mm with the plastics extruding machine.Que Ding delay powder composition and proportioning according to the section of delaying, weighing oxygenant and incendiary material mix.Use the acetone solution nitro-cotton, mass ratio is a nitro-cotton: acetone=10: 90, process the nitro-cotton glue.Glue is added delay powder, and mixing becomes paste.Along the groove plane is arranged, delay powder is daubed into groove with scraper plate, and the delay powder on the groove outerplanar is wiped off, up to the groove on the sticking plaster is all filled out with the extension ointment.Airing is having gluing on groove sticking plaster (Fig. 1) plane, and the sticking plaster of trough of belt (Fig. 2) not is stained with, and becomes pole (Fig. 3).On sticking plaster, twine with Pressure sensitive adhesive tape 4 (Fig. 3).

Cut the extension body (Fig. 4) that 10mm makes by the present invention, the detonator of packing into, test delays to measure second, calculates combustion propagation V-bar, calculates the required section body length of not delaying, and cuts the extension body by this length, and the assembling detonator promptly can be made into millisecond delay cap substruction.On the extension body, card electrical fuze, i.e. electrical fuze formula second, half second and millisecond delay cap (Fig. 5).Card plastics nonel tube, i.e. non-electric nonel tube millisecond delay cap (Fig. 6) on the extension body.

Claims

1. one kind by like Fig. 3, and the detonator delay body of Fig. 4 structure is made up of semicircle plastic strip and the delay powder core of two block length 0.5m-3m, and wherein one has groove, and the shape of groove can be the ellipse among the figure.

2. delay powder is the confection that combustible agent, oxygenant and granulating agent are formed, and wherein combustible agent content is 10%～20%, and oxygenate content is 80%～90%.Described combustible agent can be molybdenum, copper, antimony, silicon, zirconium, boron etc.; Oxygenant can be red lead (Pb ₃O ₄), PbO ₂Deng; Tackiness agent can be 4%～5% shellac solution, or 1%～10% nitrocellulose solution; The delay powder of said delay element can adopt the delay powder that uses in the prior art, for example Pb ₃O ₄, SiFe, Sb ₂S ₃Series delay powder (being called red lead, ferrosilicon and ANTIMONY SULPHIDE series delay powder again), or red lead-silicon series postponing medicine, boron is that delay powder, zirconium and Zirconium-nickel alloy delay powder, manganese are that delay powder, molybdenum are that delay powder, tungsten are delay powder etc.

3. delay powder mixes mutually with glue and is paste, daubs in the groove on the semicircle unit of plastic with grafter.

4. two semicircle plastic strips are glued together.

5. after two plastic strips being sticked together, can twine the plastics Pressure sensitive adhesive tape in addition, strengthen the globality of two plastic strips.