CN2283827Y

CN2283827Y - Safety firecracker

Info

Publication number: CN2283827Y
Application number: CN 95220810
Authority: CN
Inventors: 李宝和
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-09-01
Filing date: 1995-09-01
Publication date: 1998-06-10
Anticipated expiration: 2005-09-01

Abstract

The utility model relates to a safety firecracker. The utility model is formed by that at least one annular concave groove is arranged on the wall of a barrel boy with a bottom; a sealing cover is arranged above the barrel boy; at least two air holes and sealing jams of the air holes are respectively arranged on the barrel wall or the barrel bottom and the sealing cover; fire guide wires are arranged on one jam; the sealed barrel body is inflated with the mixture gas of hydrogen and oxygen, wherein, hydrogen occupies 5% to 30% of the volume of the inner part of the barrel body; pressure in the barrel body is at least 1.01 atmospheres. The firecracker has the advantages of safety, no environmental pollution, no generation of fires, and no harm to a human body.

Description

A kind of safe firecracker

The utility model relates to a kind of firecracker, particularly a kind of safe firecracker.

The tradition firecracker is made by black powder, paper, linen thread etc., when setting off, produces pernicious gas such as a large amount of carbon monoxide, carbon dioxide and nitrogen oxide and carbon granules, potassium sulfide, paper scrap etc.Serious environment pollution, also fire hazardous and being detrimental to health in addition.Therefore the regulation of firework control has been done in China part city, but still has wide geographic area to allow to set off firecracker, particularly vast rural area, and in the Spring Festival of ringing out the Old Year and ringing in the New Year, the celebrating of marriage marriage still set off firecracker, and congratulates joy to show, the increase festive air.Therefore, the shortcoming that sweep traditional firecracker contaminated environment, fire hazardous, is detrimental to health can increase happy atmosphere in red-letter day and still keep firecracker, plays up the custom and the effect of the happy mood of people, just becomes the focus that people pay close attention to, the direction of development.

The purpose of this utility model is to overcome the shortcoming of prior art, and a kind of safe gas firecracker is provided, and it neither can be polluted environment, also can not cause fire and human body is worked the mischief.

The purpose of this utility model is to realize like this, on a barrel wall that the end arranged, be provided with an annular groove at least, make cylindrical shell be minimum in the breakdown strength of this groove, there is a seal cover top of cylindrical shell, each is provided with a pore and sealing obstruction thereof at least on barrel or the tube end and the seal cover, one of them has blasting fuse on stopping up, and is filled with hydrogen and oxygen gas mixture in the cylindrical shell of sealing, and wherein hydrogen accounts for the 5%-30% of cylindrical shell internal volume.During production, the sealing of pore on cylindrical shell obstruction is opened, from a pore, inject oxygen, air in the cylindrical shell is squeezed away from another pore, then, block this venthole with the obstruction of band blasting fuse, the lighting of blasting fuse of stretching out obstruction has envelope paper or plastic foil outside the end, firing tip is sealed on the outer surface of obstruction, charge into hydrogen by the above-mentioned pore that charges into oxygen again after, with blocking this air-filled pore.Between obstruction and pore, be equipped with fluid sealant.Hydrogen in the cylindrical shell, the pressure of oxygen gas mixture are at least atmospheric 1.01 times.When setting off, the envelope paper or the plastic foil of sealing, protection blasting fuse are opened, lighted a fuse; hydrogen, oxygen gas mixture combustion explosion in the tube, cylindrical shell ruptures from groove, and people just can hear the sound of firecracker; and the size of blast sound level, can be controlled by the mixed proportion of regulating hydrogen, oxygen.The utility model also can be made double-sound firecracker, promptly with a dividing plate that has blasting fuse cylindrical shell is divided into two airtight cylindrical shell cavitys up and down in the middle part of cylindrical shell, respectively be provided with a venthole and an air admission hole on each cavity wall and seal and stop up, blasting fuse on its central dividing plate stretches out from an obstruction of lower chamber, and it is lighted end and seals up with envelope paper or plastic foil.

The operation principle of this gas firecracker is such, and the volume ratio relation of hydrogen and air completing combustion is a hydrogen: air=29.48: 70.52; The volume ratio relation of hydrogen and oxygen completing combustion is a hydrogen: oxygen=66.7: 33.3; Sufficient combustion according to the above ratio, brisance is big.And this firecracker adopts is hydrogen, the oxygen proportion relation of LEL, is gently quick-fried therefore.Hydrogen, oxygen gas mixture are met fiery explosion time, in centisecond, finish, and various combustible, as timber, oil, paper etc., the section of having lag time all before burning, i.e. sensitive period, as the methane sensitive period be 8-7 second.So this firecracker does not have the effect of igniting to general combustible.So can initiation fire; After the tradition firecracker blast, blast minces as the cardboard bits, fire gunpowder does not fire medicine grain etc. and easily hurts sb.'s feelings, and this firecracker does not promptly have gunpowder, does not have firecracker to mince yet, and the probability of therefore hurting sb.'s feelings is more much smaller than traditional firecracker.Still have part oxygen to loose after the blast and flow in air, therefore to put this firecracker not only harmless for point, and useful.Oxygen in this firecracker also available air substitutes, and discharge from firecracker but no longer include pure oxygen after lighting, and cost of manufacture can reduce.

The utility model firecracker safety can not cause fire and human body is worked the mischief, and does not more pollute the environment.

Details are as follows by accompanying drawing to quote embodiment below:

Fig. 1 list rings gas firecracker structural representation

Fig. 2 double-bang firecracker gas firecracker structural representation

Embodiment 1

On the wall of a plastic cylinder 1 that the end arranged, an annular groove 2 is arranged, there is a seal cover 3 top of tube, respectively be provided with a pore and sealing obstruction 4,5 on the tube end and the seal cover, stop up on 5 and have blasting fuse 6, be filled with hydrogen, oxygen gas mixture 7 in the cylindrical shell of sealing, wherein hydrogen accounts for 10% of cylindrical shell internal volume, at pore and between stopping up fluid sealant 8 is arranged, and the end of lighting of blasting fuse has plastic foil 9 to be sealed on the outer surface of obstruction in the obstruction 5.

Embodiment 2:

On the wall of a plastic circular cylinder body 10 that the end arranged the single order halfpace is arranged, a dividing plate 11 is equipped with in sealing on it, and cylindrical shell is divided into two parts cavity up and down, constituting two sound firecrackers, on the upper and lower barrel of dividing plate an annular groove 12,13 is arranged respectively.There is a seal cover 14 the cylindrical shell top, the tube end, seal cover, dividing plate and dividing plate barrel up and down thereof are provided with pore and

sealing obstruction

15,16,17,18,19, the sealing of dividing plate has blasting fuse 6 on stopping up, one end of blasting fuse feeds the upper cavity 20 of two sound firecrackers, the obstruction 19 of the other end on lower chamber 21 barrels passes, seal up with plastic foil 22, be filled with the mist 7 of hydrogen and oxygen in the upper and lower cavity respectively, wherein hydrogen accounts for 8% of cavity volume, and gas pressure is 1.02 atmospheric pressure in the cavity.Obstruction, seal cover and plastic foil are sealed on its matrix with fluid sealant respectively.

Claims

1, a kind of safe firecracker, form by detonation thing and shell body, it is characterized in that, have an annular groove at least on a barrel wall that the end arranged, there is a seal cover top of cylindrical shell, and each is provided with a pore and sealing is stopped up at least on barrel or the tube end and the seal cover, one of them has blasting fuse on stopping up, be filled with hydrogen, oxygen gas mixture in the cylindrical shell of sealing, wherein hydrogen accounts for the 5%-30% of cylindrical shell internal volume, and the pressure in the cylindrical shell is at least 1.01 atmospheric pressure.

2, a kind of safe firecracker as claimed in claim 1 is characterized in that at pore and between stopping up fluid sealant being arranged.

3, a kind of safe firecracker as claimed in claim 1 is characterized in that the end of lighting that stops up blasting fuse has envelope paper or plastic foil.