Collection device for powder fragments after an ignition impact

Abstract

The application relates to a device for collecting black powder particles after ignition impact, and belongs to the technical field of pyrotechnics, which comprises an igniter, an ignition seat, a charge seat, a black powder assembly, a front cover plate, a rear chamber, a cooling raw material, a filter layer and a lower valve. The rear chamber is vertically arranged; the front cover plate is covered on the top opening of the rear chamber; a through hole is arranged at the top center of the front cover plate; the charge seat is inserted into the through hole to realize butt joint with the front cover plate; the charge seat is connected with the front cover plate through threads; the charge seat is of a top opening structure; the black powder assembly is arranged at the bottom of the charge seat; the ignition seat is installed at the opening of the charge seat; a through hole is arranged at the axis of the ignition seat; the igniter is connected with the through hole of the ignition seat through thread cooperation; the filter layer is horizontally arranged at the bottom of the inner cavity of the rear chamber; the cooling raw material is placed on the filter layer; the lower valve is arranged at the bottom of the rear chamber; and the lower valve is located below the filter layer. The application realizes a method for directly collecting black powder particles after impact, and supports the fine design of pyrotechnics.

Description

Technical Field

[0001] This invention belongs to the field of pyrotechnics technology and relates to a device for collecting gunpowder fragments after ignition impact. Background Technology

[0002] In the field of pyrotechnics, when using an igniter to ignite black powder, the short ignition distance, small space, and relatively concentrated energy cause damage to the black powder particles. This results in some of the black powder being broken into smaller fragments. The accuracy of the powder particle size is crucial for calculating the output performance of the actuating device. The particle size distribution directly affects the pressure build-up process in the combustion chamber, thus impacting output performance. Therefore, collecting the particle size distribution of black powder fragments after ignition impact is beneficial for improving the precision design of the black powder's working process.

[0003] Because black powder ignites rapidly upon impact with an igniter, previous methods of collecting fragments have involved using non-flammable materials (such as marble granules) instead of black powder. However, due to the inherent properties of these materials, this method introduces significant errors into the test results. Therefore, a method is needed to directly collect black powder fragments after impact, supporting the refined design of pyrotechnic devices. Summary of the Invention

[0004] The technical problem solved by this invention is to overcome the shortcomings of the prior art and propose a collection device for gunpowder fragments after ignition impact, so as to realize the method of directly collecting black powder fragments after impact and support the fine design of pyrotechnic products.

[0005] The solution of the present invention is:

[0006] A device for collecting gunpowder fragments after ignition impact, including an igniter, an ignition base, a charge base, a gunpowder assembly, a front cover plate, a rear chamber, a cooling material, a filter layer, and a lower valve;

[0007] The rear chamber is vertically positioned; a front cover plate is installed at the top opening of the rear chamber; a through hole is located at the center of the top of the front cover plate; a charge holder extends into the through hole to mate with the front cover plate; the charge holder and the front cover plate are connected by threads; the charge holder has a top-opening structure; the gunpowder assembly is located at the bottom of the charge holder; an ignition seat is installed at the opening of the charge holder; a through hole is located at the axis of the ignition seat; the igniter is connected to the through hole of the ignition seat by a threaded connection; a filter layer is horizontally positioned at the bottom of the rear chamber; cooling material is placed on the filter layer; a lower valve is located at the bottom of the rear chamber; the lower valve is located below the filter layer.

[0008] In the above-mentioned gunpowder fragment collection device after ignition impact, the inner wall of the opening of the charge holder has a stepped structure; the outer wall of the bottom end of the ignition holder has a corresponding stepped structure; the ignition holder and the charge holder are connected by threads; the gunpowder assembly at the bottom of the charge holder is pressed and fixed by tightening the ignition holder.

[0009] In the aforementioned gunpowder fragment collection device after ignition impact, the gunpowder assembly includes a cartridge and black powder; the black powder is filled in the cartridge, and the cartridge seals the black powder.

[0010] The gunpowder fragment collection device after the aforementioned ignition impact operates as follows:

[0011] After the igniter is ignited, the gunpowder assembly burns; the lower valve is opened to drain the filtrate from the cooled raw material after the operation; the front cover is removed to collect the crushed powder in the rear chamber; after drying the crushed powder, it is sieved and weighed, and the weight of the crushed powder at different particle sizes is statistically analyzed to obtain the particle size distribution of the crushed powder.

[0012] In the aforementioned gunpowder fragment collection device after ignition impact, the front cover plate is provided with a pressure relief port, a filter screen, and a flange;

[0013] The pressure relief port is a vertical pipe structure; a flange is fitted on the outer wall of the pressure relief port; a filter screen is sandwiched in the middle of the flange; the pressure relief port allows for rapid release of pressure in the rear chamber; and the filter screen enables filtration.

[0014] The above-mentioned collection device for gunpowder fragments after ignition impact also includes a plug (10); when the igniter is axially horizontally connected to the side wall of the charge holder and aligned with the gunpowder assembly; the plug (10) replaces the ignition holder to seal the top opening of the charge holder.

[0015] In the above-mentioned gunpowder fragment collection device after ignition impact, the shape of the gunpowder assembly includes, but is not limited to, loose charge, columnar charge, spherical charge, and irregularly shaped charge; the inner wall shape of the charge holder is designed according to the shape of the gunpowder assembly.

[0016] Before assembly of the aforementioned gunpowder fragment collection device after ignition impact, the rear chamber is stored in a low-temperature environment, and then the front cover is installed to reduce the temperature inside the rear chamber after ignition. The rear chamber has a cylindrical or cuboid shape. The size of the rear chamber is adjusted according to the amount of gunpowder.

[0017] In the aforementioned gunpowder fragment collection device after ignition impact, the cooling materials include, but are not limited to, water and dry ice.

[0018] In the above-mentioned gunpowder fragment collection device after ignition impact, the filter screen and filter layer are made of stainless steel with a mesh size of 400 or higher; the rear chamber is made of stainless steel.

[0019] The beneficial effects of this invention compared to the prior art are:

[0020] (1) The present invention utilizes a large-space rear chamber, pressure relief port, low-temperature environment and cooling material to quickly remove the heat generated by the igniter, rapidly release the high temperature and high pressure environment, and increase the probability that the black powder particles are not ignited.

[0021] (2) The present invention can directly collect the gunpowder fragments after impact, obtain direct data on the ignition link of the blackened gunpowder by the igniter, and reduce data error.

[0022] (3) This invention is limited by the type, size, quantity, ignition method of the igniter and the type, shape, amount and loading state of the gunpowder being tested. It is a universally applicable testing device. It is economical, the test process is simple and convenient to operate, the tooling structure is simple and reusable, the raw materials are readily available, and it can be processed using ordinary metal materials. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall gunpowder fragment collection device of the present invention;

[0024] Figure 2 These are schematic diagrams showing different structures of the ignition base of the present invention;

[0025] Figure 3 These are schematic diagrams showing different shapes of the gunpowder components of the present invention. Detailed Implementation

[0026] The present invention will be further described below with reference to the embodiments.

[0027] This invention provides a device for collecting gunpowder fragments after ignition impact, and a method for directly collecting black powder fragments after impact, supporting the refined design of pyrotechnic products.

[0028] A device for collecting gunpowder fragments after ignition impact, such as... Figure 1 Specifically, the assembly includes an igniter 1, an ignition seat 2, a charge seat 3, a gunpowder assembly 4, a front cover plate 5, a rear chamber 6, a cooling material 7, a filter layer 8, and a lower valve 9. The rear chamber 6 is vertically positioned; the front cover plate 5 is fitted over the top opening of the rear chamber 6; a through hole is located at the center of the top of the front cover plate 5; the charge seat 3 extends into the through hole to mate with the front cover plate 5; the charge seat 3 and the front cover plate 5 are connected by threads; the charge seat 3 has a top-opening structure; the gunpowder assembly 4 is located at the bottom of the charge seat 3; the ignition seat 2 is installed at the opening of the charge seat 3; a through hole is located along the axis of the ignition seat 2; the igniter 1 and the through hole of the ignition seat 2 are connected by a threaded connection; the filter layer 8 is horizontally positioned at the bottom of the inner cavity of the rear chamber 6; the cooling material 7 is placed on the filter layer 8; and a lower valve 9 is located at the bottom of the rear chamber 6, below the filter layer 8.

[0029] The inner wall of the opening of the charge holder 3 has a stepped structure; the outer wall of the bottom end of the ignition holder 2 has a corresponding stepped structure; the ignition holder 2 and the charge holder 3 are connected by threads; the gunpowder assembly 4 at the bottom of the charge holder 3 is pressed and fixed by tightening the ignition holder 2. The gunpowder assembly 4 includes a powder box and black powder; the black powder is filled in the powder box, and the powder box seals the black powder.

[0030] In this invention, the working process of the collection device is as follows:

[0031] After ignition by igniter 1, the gunpowder assembly 4 burns; the lower valve 9 is opened to drain the filtrate from the cooled raw material 7 after operation; the front cover 5 is removed to collect the fragmented powder in the rear chamber 6; after drying the fragmented powder, it is sieved and weighed, and the weight of fragmented powder at different particle sizes is statistically analyzed to obtain the particle size distribution of the fragmented powder. The particle size distribution statistics of the fragmented powder are not limited to sieving and weighing; other particle size statistical methods can also be used, such as laser particle size analyzers.

[0032] The front cover plate 5 is equipped with a pressure relief port 5-1, a filter screen 5-2, and a flange 5-3. The pressure relief port 5-1 is a vertical pipe structure; the flange 5-3 is fitted onto the outer wall of the pressure relief port 5-1; the filter screen 5-2 is sandwiched in the middle of the flange 5-3; the pressure relief port 5-1 is used to quickly release the pressure in the rear chamber 6; and the filter screen 5-2 is used for filtration.

[0033] The ignition base 2 of the present invention is not limited to single-point, axial ignition; it can employ double-point, radial ignition, such as... Figure 2 As shown. The collection device for gunpowder fragments after ignition impact also includes a plug 10; when the igniter 1 is axially horizontally directly connected to the side wall of the charge holder 3 and aligned with the gunpowder assembly 4; the plug 10 replaces the ignition seat 2 to seal the top opening of the charge holder 3.

[0034] like Figure 3 As shown, the gunpowder of the present invention is not limited to black powder, but can also be any other type, shape, or state of gunpowder with testing requirements; the shape of the gunpowder assembly 4 includes, but is not limited to, loose charge, columnar charge, spherical charge, and irregular charge; the inner wall shape of the charge holder 3 is designed according to the shape of the gunpowder assembly 4.

[0035] Before assembly, the rear chamber 6 is stored in a low-temperature environment before the front cover plate 5 is installed to reduce the temperature inside the rear chamber 6 after ignition. The rear chamber 6 has a cylindrical or cuboid shape. The size of the rear chamber 6 is adjusted according to the amount of gunpowder.

[0036] Cooling materials 7 include, but are not limited to, water and dry ice.

[0037] The connection between the front cover plate 5 and the rear chamber 6 is not limited to a threaded connection; it can also be a flange and bolt press-fit connection or other connection methods.

[0038] The filter screen 5-2 and the filter layer 8 are made of stainless steel with a mesh size of 400 or higher; the rear chamber 6 is made of stainless steel.

[0039] The structure and size of the rear chamber 6 of this invention are not limited and can be selected according to the actual use. For example, when the amount of gunpowder is large, appropriately increasing the size of the rear chamber 6 is beneficial for faster heat dissipation and pressure reduction. When the installation space is limited, an external structure that matches the installation space can be adopted, not limited to cylinders, cuboids, etc.

[0040] The method of using this invention is as follows:

[0041] (1) Install the igniter on the ignition socket.

[0042] (2) Assemble the gunpowder assembly according to the actual situation, place the assembled gunpowder assembly in the charging seat, and screw on the ignition seat to tighten and fix it.

[0043] (3) Then install the assembled charge holder on the front cover plate.

[0044] (4) After placing the cooling material into the rear chamber, install the front cover plate onto the rear chamber.

[0045] (5) After ignition, open the valve to filter out the liquid, then remove the front cover and collect the fragments in the rear chamber.

[0046] (6) After drying and crushing the medicine, sieve and weigh it, and count the weight of the crushed medicine under different particle sizes.

[0047] This invention utilizes a large rear chamber, pressure relief port, low-temperature environment, and cooling materials to quickly remove the heat generated by the igniter, rapidly releasing the high-temperature and high-pressure environment and increasing the probability of unignited black powder particles. It can directly collect the impacted gunpowder fragments, obtaining direct data on the ignition process of the black powder, reducing data errors.

[0048] This invention is not limited by the type, size, or quantity of igniters, the ignition method, or the type, shape, quantity, or loading state of the gunpowder being tested. It is a universally applicable testing method. It is highly economical, the testing process is simple and convenient, the tooling structure is simple and reusable, and the raw materials are readily available and can be processed using ordinary metal materials.

[0049] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solutions of the present invention by utilizing the methods and techniques disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the protection scope of the technical solutions of the present invention.

Claims

1. A device for collecting gunpowder fragments after ignition impact, characterized in that: It includes an igniter (1), an ignition base (2), a charge holder (3), a gunpowder assembly (4), a front cover plate (5), a rear chamber (6), a cooling material (7), a filter layer (8), and a lower valve (9); The rear chamber (6) is vertically arranged; the front cover plate (5) is installed on the top opening of the rear chamber (6); a through hole is provided at the top center of the front cover plate (5); the charge seat (3) extends into the through hole to connect with the front cover plate (5); the charge seat (3) and the front cover plate (5) are connected by threads; the charge seat (3) has a top opening structure; the gunpowder assembly (4) is set at the bottom of the charge seat (3); the ignition seat (2) is installed at the opening of the charge seat (3); a through hole is provided at the axis of the ignition seat (2); the igniter (1) and the through hole of the ignition seat (2) are connected by threaded engagement; the filter layer (8) is horizontally arranged at the bottom of the inner cavity of the rear chamber (6); the cooling material (7) is placed on the filter layer (8); a lower valve (9) is provided at the bottom of the rear chamber (6); the lower valve (9) is located below the filter layer (8).

2. The device for collecting gunpowder fragments after ignition impact according to claim 1, characterized in that: The inner wall of the opening of the charge holder (3) is a stepped structure; the outer wall of the bottom end of the ignition holder (2) is a corresponding stepped structure; the ignition holder (2) and the charge holder (3) are connected by threads; the gunpowder assembly (4) at the bottom of the charge holder (3) is pressed and fixed by tightening the ignition holder (2).

3. The device for collecting gunpowder fragments after ignition impact according to claim 1, characterized in that: The gunpowder assembly (4) includes a powder box and black powder; the black powder is filled in the powder box, which seals the black powder.

4. The gunpowder fragment collection device after ignition impact according to claim 1, characterized in that: The working process of the collection device is as follows: After the igniter (1) is ignited, the gunpowder assembly (4) burns; the lower valve (9) is opened to drain the filtrate of the cooling raw material (7) after the work is completed; the front cover plate (5) is removed to collect the crushed medicine in the rear chamber (6); after drying the crushed medicine, it is sieved and weighed, and the weight of the crushed medicine under different particle sizes is counted to obtain the particle size distribution of the crushed medicine.

5. The gunpowder fragment collection device after ignition impact according to claim 4, characterized in that: The front cover plate (5) is provided with a pressure relief port (5-1), a filter screen (5-2) and a flange (5-3); Among them, the pressure relief port (5-1) is a vertical pipe structure; the flange (5-3) is fitted on the outer wall of the pressure relief port (5-1); the filter screen (5-2) is sandwiched in the middle of the flange (5-3); the pressure in the rear chamber (6) is quickly released through the pressure relief port (5-1); and filtration is achieved through the filter screen (5-2).

6. The device for collecting gunpowder fragments after ignition impact according to claim 1, characterized in that: It also includes a plug (10); when the igniter (1) is axially horizontally directly connected to the side wall of the charge holder (3) and aligned with the gunpowder assembly (4); the plug (10) replaces the igniter (2) to seal the top opening of the charge holder (3).

7. The gunpowder fragment collection device after ignition impact according to claim 1, characterized in that: The shape of the gunpowder assembly (4) includes, but is not limited to, loose charge, columnar charge, spherical charge, and irregular charge; the inner wall shape of the charge holder (3) is designed according to the shape of the gunpowder assembly (4).

8. The gunpowder fragment collection device after ignition impact according to claim 4, characterized in that: Before assembly, the rear chamber (6) is stored in a low-temperature environment and then the front cover plate (5) is installed to reduce the temperature inside the rear chamber (6) after ignition. The rear chamber (6) has a cylindrical or cuboid shape. The size of the rear chamber (6) is adjusted according to the amount of gunpowder.

9. The device for collecting gunpowder fragments after ignition impact according to claim 4, characterized in that: The cooling materials (7) include, but are not limited to, water and dry ice.

10. The device for collecting gunpowder fragments after ignition impact according to claim 5, characterized in that: The filter screen (5-2) and filter layer (8) are made of stainless steel with a mesh size of 400 or higher; the rear chamber (6) is made of stainless steel.

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