CN110779398A - Firework launching device and method - Google Patents

Abstract

The invention discloses a firework launching device and a method, wherein the firework launching device comprises: the device comprises a medicine containing box, electrodes, a press switch control system and a direct-current power supply; the medicine charging box is provided with a base and one or more medicine charging barrels with top openings; the cartridge is filled with electrically controlled solid propellant grains, and the electrically controlled solid propellant adopts current-sensitive gunpowder; the electrode is connected into a medicine containing cylinder and is used for igniting the electric control solid propellant grain when electrified; the push switch is connected with the direct-current power supply and is used for adjusting the on/off state of the direct-current power supply; the control system is respectively connected with the direct current power supply and the electrode and is used for controlling the electrode to be electrified. The invention has simple structure and easy realization. The safety factor of the firework setting off process can be improved, and the release control process of the firework is optimized.

Description

Firework launching device and method

Technical Field

The invention belongs to the technical field of fireworks, and particularly relates to a firework launching device and a firework launching method based on the firework launching device.

Background

Fireworks are set off at the festival of the year, which is the traditional custom of Chinese people. The existing flat ground fireworks need to be ignited by using a lighter, cigarettes and the like before being set off, hands and faces of people are very close to the fireworks when being ignited, safety accidents happen sometimes, and personal safety is easily influenced. Meanwhile, in the process of simultaneously setting off a plurality of fireworks, the control on the releasing rhythm of the fireworks cannot be realized, and the preset setting off effect is difficult to form. Therefore, how to develop a new firework emitting device to overcome the above problems is a direction that needs to be studied by those skilled in the art.

Disclosure of Invention

The invention aims to provide a firework launching device which can improve the safety factor in the firework setting off process and optimize the release control process of fireworks.

The technical scheme is as follows:

a firework launching device, comprising: the device comprises a medicine containing box, electrodes, a press switch control system and a direct-current power supply; the medicine charging box is provided with a base and one or more medicine charging barrels with top openings; the cartridge is filled with an electric control solid propellant grain, and the electric control solid propellant adopts current sensitive gunpowder; the electrode is connected into a medicine containing cylinder and is used for igniting an electric control solid propellant grain when electrified; the push switch is connected with the direct-current power supply and is used for adjusting the on/off state of the direct-current power supply; the control system is respectively connected with the direct-current power supply and the electrode and is used for controlling the electrode to be electrified.

Preferably, in the firework emitting device: the electric control fixed propellant is a hydroxylamine nitrate solid propellant.

More preferably, in the firework emitting device: the electric control fixed propellant is composed of the following components in parts by mass: hydroxylamine nitrate: 77 parts; polyvinyl alcohol: 15 parts of (1); boric acid: 2 parts of (1); cyclodextrin: 6 parts.

Further preferably, in the firework emitting device: the control system adopts a circuit board integrated with a single chip microcomputer, a delay circuit, a direct current converter and an MOS switch; the MOS switch is connected with the electrode and used for controlling the electrode to be electrified.

Further preferably, in the firework emitting device: the bottom of the charging barrel is provided with an electrode hole and a wire hole, the electrode is fixed in the electrode hole, and the MOS switch is connected with the electrode through a wire penetrating through the wire hole.

Based on the equipment, the invention further discloses a firework launching method, which has the technical scheme as follows:

a firework launching method comprises the following steps:

s1: performing data fitting on a burning speed-voltage curve of the electric control solid propellant grains in each cartridge case, and calculating the change relation between voltage and time provided for each electric control solid propellant grain when fireworks are launched;

s2: the voltage and time change relation of each electric control solid propellant grain of S1 is converted into a program to be stored in a storage of a singlechip in advance, and leads connected with electrodes at the bottom of each charging barrel are respectively connected to each MOS switch on a control system (6);

s3: the press switch is pressed to start the power supply, after the delay of the delay circuit, the single chip microcomputer controls the direct current converter and the MOS switch to work, and the electric control solid propellant grains in each medicament containing barrel are electrified through the electrodes to ignite the combustion of the electric control solid propellant.

Compared with the prior art, the invention has simple structure and is easy to realize. By adopting the power-on ignition mode, the emission delay of 5-6 seconds is obtained, thereby greatly improving the use safety. Meanwhile, the preset firework pattern effect changing along with time is realized, and the release control process of the fireworks is optimized. The hydroxylamine nitrate electric control solid propellant is used as gunpowder, is convenient to prepare, has low toxicity and certain insensitive performance, and is safe in the processes of production, manufacture, transportation, storage and the like.

Drawings

The invention is described in further detail in the following description of embodiments with reference to the accompanying drawings:

FIG. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 is a schematic view of the external structure of the present invention;

the corresponding relation between each reference mark and the part name is as follows:

1. loading a medicine box; 2. a base; 3. electric control 4, electrodes; 5. a push switch; 6. a control system; 7. a direct current power supply.

Detailed Description

In order to more clearly illustrate the technical solution of the present invention, the above description will be further described with reference to various embodiments.

Example 1 as shown in fig. 1-2:

a firework launching device, comprising:

the device comprises a medicine containing box 1, a base 2, an electric control solid propellant grain 3, an electrode 4, a push switch 5, a control system 6 and a direct current power supply 7.

Wherein, the medicine-containing box 1 contains 36 medicine-containing boxes, each medicine-containing box contains an electric control solid propellant grain 3, the diameter of each grain 3 is 5mm, and the height is 10 mm. The bottom of each cartridge is perforated with two small holes, and two vertically parallel stainless steel rods are embedded and fixed therein as electrodes 4. The medicine containing box 1 is internally provided with 72 electrodes 4 in total, the diameter of each electrode 4 is 0.8mm, and the center distance between two adjacent electrodes 4 in the same medicine containing box is 2 mm. Smaller through holes are drilled at the bottoms of the medicine containing cylinders below the electrodes 4, the conducting wires are inserted into the small holes from the direction of the base and are connected with the electrodes 4 and used for supplying power to the electrodes 4, the two conducting wires led out from the bottoms of the medicine containing cylinders are correspondingly connected with the MOS switches on the circuit board one by one, and namely, each MOS switch can control the on-off of the current in the corresponding electric control solid propellant grain through the two electrodes. The formula and the parts by weight of the used electric control solid propellant are as follows: hydroxylamine nitrate: 77 parts; polyvinyl alcohol: 15 parts of (1); boric acid: 2 parts of (1); cyclodextrin: 6 parts.

In practice: after the electrodes 4 are embedded and fixed in the small holes at the bottom of the medicine charging barrels in parallel, the prepared liquid electric control solid propellant is poured into each medicine charging barrel and is solidified and molded after 24 hours at room temperature. The ignition, extinction and burning speed of each electric control solid propellant grain 3 are controlled by the introduced voltage or current. The threshold value of the electric control solid propellant of the formula for ignition and combustion is about 40V, and when the current is cut off or the voltage is below 40V, the electric control solid propellant is extinguished; within a certain range, the larger the voltage or current is, the faster the electric control solid propellant burns, and the brighter the flame generated by the electric control solid propellant grain 3 is. Namely, the burning sequence and the brightness degree of the electric control solid propellant grains 3 can be changed according to a certain rule by changing the sequence of the current and the voltage of the electric control solid propellant grains 3.

And (3) carrying out data fitting on the changes of ignition, extinguishment, brightness and the like of the 36 electric control solid propellant grains 3 in the medicine containing box 1 along with time through a burning speed-voltage curve to obtain the change relation of the voltage supplied to each electric control solid propellant grain 3 along with time in the working process of the device.

The change relation of the voltage required to be introduced along with the time is converted into a program and stored in a storage of a single chip microcomputer in advance, the single chip microcomputer is inserted into or welded on a circuit board, and leads led out from the bottoms of two electrodes 4 in each cartridge are in one-to-one correspondence with MOS switches on the circuit board. The circuit board is provided with a singlechip, a direct current converter, a delay circuit and 36 MOS switches, and in order to prevent short circuit caused by direct contact of two adjacent electrodes 4 when combustion is caused by external reasons due to small distance between the electrodes 4, the circuit board is also provided with a short circuit prevention circuit. The power supply 7 adopts 5 storage batteries with 12V voltage to form a group, the storage batteries with 60V output voltage can convert the voltage of each electric control solid propellant grain 3 into 40V-100V through a direct current converter. The circuit board is packaged and fixed below the medicine containing cylinder, the power supply 7 is fixed in the clamping groove of the base 2, and the power supply 7 can be turned on and off by pressing the switch 5. After the connection of all the parts is finished, the medicine containing barrel 1 and the base 2 are connected and fastened in a mode of combining the clamping hook clamping position and the screw.

The press switch 5 is pressed, the power supply 7 is started, the single chip microcomputer starts to execute a program after the delay time of the delay circuit 5s-6s, the direct current converter and the MOS switch are controlled to work, a certain current is introduced into each firework cylinder filled with the electric control solid propellant 3, and the combustion of the electric control solid propellant 3 in each cylinder is controlled. When the MOS switch is opened, current is introduced into the electric control solid propellant 3 corresponding to the MOS switch, and when the voltage exceeds the combustion threshold of the electric control solid propellant 3, the electric control solid propellant 3 is ignited. In the combustion range of the electrically-controlled solid propellant 3, the higher the voltage is applied, the faster the electrically-controlled solid propellant 3 burns, i.e., the brighter the flame is. When the MOS switch is closed, no current passes through the electric control solid propellant 3 corresponding to the MOS switch, and the combustion of the electric control solid propellant stops. Therefore, after the power is supplied, some of the electrically-controlled solid propellant grains 3 may be ignited, and some of the electrically-controlled solid propellant grains may not be ignited, so that the ignited electrically-controlled solid propellant grains 3 do not necessarily have the same burning rate, and flames with different brightness degrees are presented. The burning rate of the electrically controlled solid propellant grains 3 at 100V is about 0.6mm/s, i.e. a single grain 3 can burn at a maximum burning rate of about 16.6 s. In the combustion process, the ignition, the extinguishment and the change of the burning speed of the electric control solid propellant 3 in each medicament containing cylinder along with the time are combined with the arrangement among 36 medicament columns 3, so that certain performance and ornamental effects are achieved.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. The protection scope of the invention is subject to the scope of the claims.

Claims (6)

1. A firework launching device, comprising: a medicine containing box (1), an electrode (4), a press switch (5), a control system (6) and a direct current power supply (7);

the medicine containing box (1) is internally provided with a base (2) and one or more medicine containing boxes with open tops; an electric control solid propellant grain (3) is arranged in the cartridge case, and the electric control solid propellant grain (3) adopts current sensitive gunpowder; the electrode (4) is connected into a cartridge case and is used for igniting the electric control solid propellant grain (3) when electrified; the press switch (5) is connected with the direct current power supply (7) and is used for adjusting the on/off state of the direct current power supply (7); the control system (6) is respectively connected with the direct-current power supply (7) and the electrode (4) and is used for controlling the electrode (4) to be electrified.

2. A firework launching device as claimed in claim 1, wherein: the electric control fixed propellant grain (3) is formed by hydroxylamine nitrate solid propellant.

3. A firework launching device as claimed in claim 2, wherein: the electrically-controlled fixed propellant grain (3) is composed of the following components in parts by mass:

hydroxylamine nitrate: 77 parts;

polyvinyl alcohol: 15 parts of (1);

boric acid: 2 parts of (1);

cyclodextrin: 6 parts.

4. A firework launching device as claimed in claim 1, wherein: the control system (6) adopts a circuit board integrated with a single chip microcomputer, a delay circuit, a direct current converter and an MOS switch; the MOS switch is connected with the electrode (4) and is used for controlling the electrode (4) to be electrified.

5. A firework launching device as claimed in claim 4, wherein: the bottom of the charging barrel is provided with an electrode hole and a wire hole, the electrode (4) is fixed in the electrode hole, and the MOS switch is connected with the electrode (4) through a wire penetrating through the wire hole.

6. A firework launching method is characterized by comprising the following steps:

s1: performing data fitting on a burning speed-voltage curve of the electric control solid propellant grains in each cartridge case, and calculating the change relation between voltage and time provided for each electric control solid propellant grain when fireworks are launched;

s2: the voltage and time change relation of each electric control solid propellant grain of S1 is converted into a program to be stored in a storage of a singlechip in advance, and leads connected with electrodes at the bottom of each charging barrel are respectively connected to each MOS switch on a control system (6);

s3: the press switch is pressed to start the power supply, after the delay of the delay circuit, the single chip microcomputer controls the direct current converter and the MOS switch to work, and the electric control solid propellant grains in each medicament containing barrel are electrified through the electrodes to ignite the combustion of the electric control solid propellant.

Images