RU49217U1 - Pyrotechnic fountain - Google Patents

Abstract

The utility model can be used in spectacular, festive events and shows, both as part of complex pyrotechnic figures, and is self-seeking, since it has programmable multifunctionality of spark (force), color (flame) and smoke effects. The fountain consists of a body 1, a nozzle part 2 (clay, gypsum, and so-called non-combustible materials), a collection charge 3, which is a programmable set of series-connected pyroelements of colored flame force pyroelements (for example, in the form of pressed tablets), wad 4 (sealing caps wrapped, for example in polyethylene film), supports - a mug 5 of thin cardboard, inside attached to the body of the product. A thin-walled shell 6, uniting pyroelements, is placed inside the housing 1, over which a special heat-resistant insert 7 is located.

Description

The utility model relates to pyrotechnic entertainment products, namely, to the device of the pyrotechnic fountain used in celebrations and shows.

Fountain devices are cylindrical paper tubes containing a pyrotechnic spark-forming composition (V. I. Solodovnikov. Pyrotechnics. Oborongiz, ML, 1938.). As a rule, tubes with a composition to ensure the discharge of sparks to a great height have a plug at one end and a diaphragm with an aperture of various designs on the other. Fountains are usually ignited from a flame-retardant cord or electric igniter inserted through an opening in the diaphragm. The body of the composition can be made both paper and from a polymeric material, metal or composites.

As a prototype, a device was selected (Fig. 1), consisting of a body - a metal or paper, or plastic sleeve, a pyrotechnic filler - a force-filled composition, a nozzle block located on one side of the body, and a wad (sealing plug) placed on the other side. (V.I. Solodovnikov. Pyrotechnics, Oborongiz, ML, 1938. P.65). The fountain is mounted in a special stand, either by sticking a pin tied to the body into the ground or with a clamp (rotating fountains, figures from fountains).

The well-known pyrotechnic fountain has certain disadvantages. These include: the limited colorful effect of combustion in quality and time, explosion and fire hazard, the danger of unstable combustion, the danger of using metal cases, the possibility of burning paper and plastic cases, unreliable mounting of the device, the large weight and dimensions of the fountain, and coasters. The fountain is usually not used as an independent product and is part of complex figures, because Creates a limited colorful effect.

The problem to which the proposed utility model is directed is to obtain a fundamentally new colorful effect - programmable burning of a pyrotechnic composition with a changing flame color and force of sparks, increasing the burning time (increasing the time of the colorful effect), reducing explosion and fire safety, reducing weight, dimensions products, reducing its material consumption, cost, the possibility of using the device as an independent colorful pyrotechnic product.

A pyrotechnic fountain is proposed, consisting of a body, a pyrotechnic filler, a nozzle block on one side of the body and a wad on the other hand, in which the pyrotechnic filler is a collection charge made of a programmable set of sequentially placed color of flame force pyrocells of one or more flame colors and / or one or more types of halo of sparks, united by a common thin-walled shell placed inside the fountain body, on top of which there is a heat-resistant liner.

Flameless violet pyroelements can be pyroelements of the same type of formulation, but with a different burning effect, which determines the size and shape of the colored flame and force sparks, and various types of formulations with a different burning effect.

Wad is a sealing plug made of lightweight porous material, such as paper waste paper, polystyrene foam, etc., wrapped in a thin plastic film, such as a plastic film. The wad provides sealing of the bottom of the pyrotechnic fountain and ensures that gases do not penetrate the collection charge. A light wad does not fly far when the case breaks, it is quickly braked by air, ensuring the safe handling of the product.

A multilayer shell formed of a thin-walled shell and a heat-resistant liner and separating the collection charge from the product body is made of paper or a similar sheet material and aluminum foil.

To exclude the possibility of burning the fountain body after the collective charge has burned out, a layer of antipyrene, for example, a solution of phosphoric acid, ammonium phosphate, water glass, etc., is applied to the end part of the body and the surface of the nozzle block.

Using a set of series-connected color-flame pyroelements (collective charge), which burn with different color and force effect, allows you to get a new colorful burning effect, programmed in advance: an effect with changing color and size of the flame, as well as the force of sparks.

Placing pyroelements in a common thin-walled shell, combining them into a collection charge, leads to an increase in the duration of the pyrotechnic fountain (time of the colorful effect), reduces the weight and dimensions of the product.

The presence of a heat-resistant liner provides non-burning of the shell during the functioning of the pyrotechnic fountain, increases the duration of combustion with equivalent external dimensions of the product, increases its fire safety without

damage to the colorful pyrotechnic effect, reduces the weight and dimensions of the product.

The product body is fastened by introducing it into a paper stand before using the product. The stand, squeezing the body of the product by squeezing the “petals” of the cardboard, securely mounts the fountain on a horizontal surface.

The total use of a new structural element, a light wad and stand reduces the weight, dimensions of the product, reduces its material consumption, explosion and fire hazard, as well as the cost of the product.

The design of the proposed pyrotechnic products of the fountain is presented in figure 2. The fountain consists of a casing 1 (it can be in the form of a sleeve), a nozzle block 2 (clay, gypsum, etc. fireproof materials), a collection charge 3, which is a programmable set of sequentially placed pyroelements of flame-colored force pyroelements (in the form of pressed tablets), wad 4 (sealing plugs, wrapped, for example, in polyethylene film), support circles 5 of thin cardboard, inside attached to the body of the product. A thin-walled shell 6, uniting pyroelements, is placed inside the housing 1, over which a special heat-resistant insert 7 is located.

The body 1 of the product can be further covered by the "petals" of the stand 8.

Figure 3 shows the collective charge 3, consisting of sequentially placed colored flame force pyrocells, united by a thin-walled shell 6.

The product is triggered by conventional means of ignition: a flame-retardant cord (OPS), an electric igniter, etc., creating a long-lasting colorful effect, consistently changing in color, size, shape and halo of flame and sparks, smoke effect.

Table 1 shows the comparative characteristics of the prototype product and the proposed utility model.

Table 1 Comparative fountain models Product Diameter (Outside mm Body length mm Charge diameter, mm Charge height mm Burning time before burning the case sec Observed effect: force, flame, color of sparks, etc. Prototype Product 14 80 10 40 8 The case burned out for the 8th sec .; only force sparks and smoke, ignition of the body, Product PM, 1 14 80 10 40 ≥20 Force of silver sparks with one-color flame torch (red, yellow, lilac and others). No burning or burning of the body material, Product PM, 2 14 80 10 40 ≥20 Force of sparks moving in size and color with a torch changing shades, shape, sizes. The case did not burn out. Product PM, 3 14 80 10 40 ≥20 Force gold or silver sparks with a consistent change in color of the flame. The case did not burn out.

Product IM, 4 14 80 10 40 ≥20 Force sparks, including color-flame and sequential resizing and color of the flame of the torch. The case did not burn out.

Pyrotechnic color-flame force compositions containing nitric acid salts of sodium, potassium, strontium, barium, potassium peroxide, ammonium peroxide, organic adhesives and flame-flame additives were used as pyroelements in the charge. In this case, predominantly reusable pyrocompositions were used, containing not more than 30-35% of slag-forming substances.

Combined charges were compiled multivariate for products PM, 1-PM, 4 in the types of combinations shown in Table 2.

table 2 Options Ravnosti colorophores tablets (table.), Tested in options PM Notes Option 1a Only red flame, force silver. The case did not burn out. 1b Only yellow flame, force silver. 1c Only lilac, force silver. Option 2a Tab. red-flame + yellow-flame + lilac. The case did not burn out. 2b Tab. lilac + small sparks + large sparks 2c Tab. yellow + lilac + yellow. Option 3a Tab. lilac with golden + silver sparks + pink. The case did not burn out 3b Tab. yellow + blue + green + red. 3c Tab. lilac + blue + yellow + red

Option 4a Tab. lilac with mixed colors sparks The case did not burn out. 4b Tab. red with small, why large silver sparks. 4c Tab. with weak sparking, then strong sparking.

Product PM, 1 was prepared from a set of tablets (combined charge) containing one oxidizing agent, one color-flame additive, one spark-forming agent and a binder, but at the same time they were varied by the percentage of substances and the dispersion of the spark-forming agent, which was used as powdered titanium.

Product PM, 2 was prepared (collective charge) from tablets of pyrocomposition of various formulations and spark-generating agents.

Product PM, 3 was prepared (collective charge) from tablets sequentially including iron and titanium powders as spark formers.

Product PM, 4 was prepared (collective charge) from tablets with one spark-forming agent, but with different oxidizing agents and color-flame additives.

The data on the burn-out and burning times given in table 1 show that the proposed utility model has undeniable advantages over the prototype product, both in terms of duration and type (options) of the colorful burning effect. In this case, as shown in table 2, the set of tablets of flame-colored force pyroelements (compositions) is taken of one total size (≈ diameter 10 mm, length ≈40 mm), although the dimensions of the case allow 1.5 times to increase the charge length, providing a comprehensive new colorful the burning effect with an increase in the burning time to 25-30 s, which does not lead, however, to the burning of the paper case of the fountain with the existing (selected) options.

Claims (9)

1. Pyrotechnic fountain, consisting of a casing, pyrotechnic filler, nozzle block on one side of the casing and wad on the other hand, in which the pyrotechnic filler is a collection charge made of a programmable set of sequentially placed flame-colored force pyroelements of one or more flame colors and / or one or more types of halo of sparks, united by a common thin-walled shell placed inside the housing, on top of which there is a heat-resistant liner. 2. The fountain according to claim 1, characterized in that the flame-colored force pyroelements are pyroelements of the same type of formulation with a different burning effect. 3. The fountain according to claim 1, characterized in that the flame-colored force pyroelements are various types of formulations with different burning effects. 4. The fountain according to claim 1, characterized in that the wad is a plug of lightweight porous material, wrapped in a thin plastic film, for example a plastic film. 5. The fountain according to claim 4, characterized in that paper waste paper, foam can be selected as light porous material. 6. The fountain according to claims 1 and 4, characterized in that a thin plastic film is located to the side surface of the collection charge so as to prevent the penetration of hot gases during combustion along the collection charge. 7. The fountain according to claim 1, characterized in that the multilayer shell separating the collective charge from the body of the product is made of paper or a similar sheet material and aluminum foil. 8. The fountain according to claim 1, characterized in that a flame retardant layer, for example, a solution of phosphoric acid, ammonium phosphate, water glass, is applied to the end part of the housing and the surface of the nozzle block. 9. The fountain according to claim 1, characterized in that the casing is additionally covered by "petals" of a stand made of cut-out cardboard.