Compressed gas sensitization device for colloidal explosive

Abstract

The utility model relates to the technical field of colloidal explosive production, in particular to a compressed gas sensitization device for colloidal explosives. The compressed gas sensitization device for the colloidal explosive comprises an explosive semi-finished product inlet pipe, a compressed gas inlet pipe, a microbubble generator, an additive inlet pipe and a static mixer, the explosive semi-finished product inlet pipe is communicated with the static mixer, and the compressed gas inlet pipe, the microbubble generator and the additive inlet pipe are all mounted on the explosive semi-finished product inlet pipe; one end of the compressed gas inlet pipe extends out of the explosive semi-finished product inlet pipe, and the other end is positioned in the explosive semi-finished product inlet pipe and connected with the microbubble generator; one end of the additive inlet pipe extends out of the explosive semi-finished product inlet pipe, and the other end is positioned in the explosive semi-finished product inlet pipe and faces the static mixer. The compressed gas sensitization device can solve the problem of non-uniform sensitization of colloidal explosives, can improve the stability of the quality of the colloidal explosives, and reduces the influence of the sensitization problem on the blasting quality.

Description

Technical Field

[0001] The utility model relates to the technical field of colloidal explosive production, in particular to a compressed gas sensitization device for colloidal explosive. Background Art

[0002] During the production of gel explosives, ungas-sensitized gel explosives essentially lack the sensitivity of detonators. To meet the commercial explosive requirements for use in civilian blasting projects, they must be sensitized. The density and energy of gel explosives are adjusted by introducing uniform, tiny bubbles into the material. This can be achieved through sensitization, which involves adding chemical materials to the material to cause a chemical reaction during cooling and mixing, releasing gas that is trapped within the material to form bubbles and evenly distribute throughout the material, thereby achieving sensitization. In existing sensitization methods, sensitizers and accelerators are typically added by injection or dripping, resulting in poor dispersion and uneven sensitization, which is detrimental to the stability of the explosive's explosive and storage properties. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a compressed gas sensitization device for colloidal explosives, which can solve the problem of uneven sensitization of colloidal explosives, improve the stability of the quality of colloidal explosives, and reduce the impact of sensitization problems on blasting quality.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] A compressed gas sensitization device for colloidal explosives comprises: an explosive semi-finished product inlet pipe, a compressed gas inlet pipe, a microbubble generator, an additive inlet pipe and a static mixer; the explosive semi-finished product inlet pipe is connected to the static mixer, and the compressed gas inlet pipe, the microbubble generator and the additive inlet pipe are all mounted on the explosive semi-finished product inlet pipe; one end of the compressed gas inlet pipe extends out of the explosive semi-finished product inlet pipe, and the other end is located within the explosive semi-finished product inlet pipe and connected to the microbubble generator; one end of the additive inlet pipe extends out of the explosive semi-finished product inlet pipe, and the other end is located within the explosive semi-finished product inlet pipe and faces the static mixer.

[0006] When mixing colloidal explosives, a pump for mixing semi-finished explosives delivers the semi-finished explosives to the semi-finished explosives inlet pipe. A high-pressure air pump compresses high-pressure nitrogen into the compressed gas inlet pipe, and an additive pump pumps additives into the additive inlet pipe. The additives are used to fix the microbubbles evenly dispersed within the explosives, preventing them from agglomerating into ineffective large bubbles or even escaping the explosives. The high-pressure nitrogen is dispersed into the flowing semi-finished explosives in the form of microbubbles by a microbubble generator at the end of the compressed gas inlet pipe. The number and particle size distribution of the bubbles can be controlled by a pump connected to the compressed gas inlet pipe, thereby controlling the pressure and flow of the nitrogen. The mixed semi-finished explosives, mixed with the additives and nitrogen microbubbles, then enter the static mixer. After mixing and dispersion in the static mixer, they can be directly loaded into the blasthole, forming a colloidal explosive after a period of time. After the colloidal explosive is sensitized by the above device, the dispersion of the colloidal explosive is better, the uneven sensitization is greatly reduced, the stability of the quality of the colloidal explosive is improved, and the impact of the sensitization problem on the blasting quality is reduced.

[0007] Optionally, a compressed gas sensitization device for gel explosives further includes an additive nozzle, which is installed at one end of the additive inlet pipe located within the explosive semi-finished product inlet pipe. The provision of the additive nozzle can effectively improve the uniformity of additive injection.

[0008] Optionally, the compressed gas inlet pipe is L-shaped to facilitate external equipment.

[0009] Optionally, the additive inlet pipe is L-shaped to facilitate connection to external equipment.

[0010] Optionally, the protruding ends of the compressed gas inlet pipe and the additive inlet pipe are respectively located on opposite sides of the explosive semi-finished product inlet pipe to avoid mutual influence between the two.

[0011] Optionally, the microbubble generator adopts a membrane structure, thereby making it easier to control the size of the bubbles.

[0012] Optionally, the microbubble generator adopts a metal powder sintered structure, thereby making the microbubble generator easier to maintain.

[0013] Optionally, the explosive semi-finished product inlet pipe is connected to a mixed explosive semi-finished product pump to facilitate pumping of the explosive semi-finished product.

[0014] Optionally, the compressed gas inlet pipe is connected to a high-pressure gas pump to facilitate the delivery and control of nitrogen.

[0015] Optionally, the additive inlet pipe is connected to an additive pump to facilitate pumping of the additive.

[0016] In summary, the present invention has at least the following beneficial technical effects:

[0017] 1. This device effectively controls the number and size distribution of bubbles. Sensitization of the gelled explosive improves its dispersion and significantly reduces uneven sensitization. This improves the stability of the gelled explosive's quality and reduces the impact of sensitization on blasting quality.

[0018] 2. By setting up an additive nozzle, the uniformity of adding additives can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the compressed gas sensitization device.

[0020] Explanation of the accompanying symbols: 1. Explosive semi-finished product inlet pipe; 2. Compressed gas inlet pipe; 3. Microbubble generator; 4. Additive inlet pipe; 5. Additive nozzle; 6. Static mixer. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] The terms used in the following embodiments of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, the singular expressions "a", "an", "said", "above", "the", and "this" are intended to include plural expressions as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used in the present invention refers to and includes any or all possible combinations of one or more of the listed items. The term "exemplary" means "serving as an example, embodiment, or illustration", and any embodiment described herein as "exemplary" is not necessarily to be construed as superior to or better than other embodiments. The terms "first" and "second" are used for descriptive purposes only and should not be understood to imply or suggest relative importance or to implicitly indicate the number of the indicated technical features. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present invention, unless otherwise specified, "multiple" means two or more.

[0023] This embodiment provides a compressed gas sensitization device for colloidal explosives.

[0024] refer to Figure 1A compressed gas sensitization device for colloidal explosives includes an explosive semi-finished product inlet pipe 1, a compressed gas inlet pipe 2, a microbubble generator 3, an additive inlet pipe 4, an additive nozzle 5 and a static mixer 6.

[0025] Both ends of the explosive semi-finished product inlet pipe 1 are open, and one end is connected to the static mixer 6. The explosive semi-finished product can enter from the opening at one end of the explosive semi-finished product inlet pipe 1 away from the static mixer 6 and enter the static mixer 6 through the explosive semi-finished product.

[0026] The compressed gas inlet pipe 2 and the additive inlet pipe 4 are both L-shaped hollow pipe sections, fixedly connected to the side wall of the semi-finished explosive inlet pipe 1. One end of the compressed gas inlet pipe 2 is located within the semi-finished explosive inlet pipe 1 and connected to the microbubble generator 3, while the other end protrudes from the side wall of the semi-finished explosive inlet pipe 1. One end of the additive inlet pipe 4 extends into the semi-finished explosive inlet pipe 1 and faces the static mixer 6, while the other end protrudes from the side wall of the semi-finished explosive inlet pipe 1. The protruding ends of the compressed gas inlet pipe 2 and the additive inlet pipe 4 are located on opposite sides of the semi-finished explosive inlet pipe 1.

[0027] The microbubble generator 3 is fixedly connected to the explosive semi-finished product inlet pipe 1, and one end of the compressed gas inlet pipe 2 extends into the explosive semi-finished product inlet pipe 1 and is connected to the microbubble generator 3. The additive nozzle 5 is fixedly connected to one end of the additive inlet pipe 4 located inside the explosive semi-finished product inlet pipe 1. Since the microbubble generator 3 is an existing structure, it will not be described in detail here. Among them, the microbubble generator 3 can adopt a membrane structure or a metal powder sintering structure. The size of the bubbles generated by the microbubble generator 3 with a membrane structure is easier to control, and the microbubble generator 3 with a metal powder sintering structure is easier to maintain.

[0028] During on-site mixed-pack colloid explosive production, the semi-finished explosive inlet pipe 1 is connected to a pump for mixing semi-finished explosives, which delivers the semi-finished explosives into the semi-finished explosive inlet pipe 1. The compressed gas inlet pipe 2 is connected to a high-pressure air pump, which compresses high-pressure nitrogen into the compressed gas inlet pipe 2. The additive inlet pipe 4 is connected to an additive pump, which pumps additives into the additive inlet pipe 4. The additives are then injected into the semi-finished explosive flowing within the semi-finished explosive inlet pipe 1 through an additive nozzle 5. The additives can be injected into the semi-finished explosive before or after the microbubble generator 3. The additives serve to stabilize the microbubbles evenly dispersed within the explosive, preventing them from agglomerating into ineffective large bubbles or even escaping the explosive. High-pressure nitrogen is dispersed into the flowing semi-finished explosive in the form of microbubbles via a microbubble generator 3 at the end of the compressed gas inlet pipe 2. The diameter of the nitrogen microbubbles ranges from 10 to 200 microns, and the number and size distribution of the bubbles can be controlled by a pump connected to the compressed gas inlet pipe, thereby achieving control over the pressure and flow of the nitrogen. A control valve is located between the high-pressure gas pump and the compressed gas inlet pipe 2. The semi-finished explosive, mixed with additives and nitrogen microbubbles, then enters a static mixer 6. After mixing and dispersion in the static mixer 6, it can be directly loaded into the blasthole, forming a gelled explosive after a period of time. Sensitization of the gelled explosive improves its dispersibility and significantly reduces uneven sensitization. This solves the problem of microbubble quality being significantly affected by temperature and pH in chemical sensitization, improves the stability of the gelled explosive, and reduces the impact of sensitization on blasting quality.

[0029] The microbubble generator 3 is a membrane structure or a metal powder sintered structure. The semi-finished explosive is a flowable gel explosive such as emulsion explosive and water gel explosive that can be pumped and transported through a pipeline.

[0030] The above embodiments are merely a detailed introduction to the technical solutions of the present invention. However, the description of the above embodiments is only intended to help understand the method and core concept of the present invention and should not be construed as limiting the present invention. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A compressed gas sensitization device for colloidal explosives, characterized in that: include: An explosive semi-finished product inlet pipe (1), a compressed gas inlet pipe (2), a microbubble generator (3), an additive inlet pipe (4) and a static mixer (6); The explosive semi-finished product inlet pipe (1) is connected to the static mixer (6), and the compressed gas inlet pipe (2), the microbubble generator (3) and the additive inlet pipe (4) are all installed on the explosive semi-finished product inlet pipe (1); one end of the compressed gas inlet pipe (2) extends out of the explosive semi-finished product inlet pipe (1), and the other end is located in the explosive semi-finished product inlet pipe (1) and connected to the microbubble generator (3); one end of the additive inlet pipe (4) extends out of the explosive semi-finished product inlet pipe (1), and the other end is located in the explosive semi-finished product inlet pipe (1) and faces the static mixer (6).

2. A compressed gas sensitization device for gel explosives according to claim 1, characterized in that: The invention also comprises an additive nozzle (5), which is installed at one end of the additive inlet pipe (4) located inside the explosive semi-finished product inlet pipe (1).

3. A compressed gas sensitization device for colloidal explosives according to claim 1 or 2, characterized in that: The compressed gas inlet pipe (2) is L-shaped.

4. A compressed gas sensitization device for gel explosives according to claim 1 or 2, characterized in that: The additive inlet pipe (4) is L-shaped.

5. A compressed gas sensitization device for gel explosives according to claim 1 or 2, characterized in that: The protruding ends of the compressed gas inlet pipe (2) and the additive inlet pipe (4) are respectively located on opposite sides of the explosive semi-finished product inlet pipe (1).

6. A compressed gas sensitization device for gel explosives as claimed in claim 1, characterized in that: The microbubble generator (3) adopts a membrane structure.

7. A compressed gas sensitization device for gel explosives as claimed in claim 1, characterized in that: The microbubble generator (3) adopts a metal powder sintered structure.

8. A compressed gas sensitization device for gel explosives according to claim 1 or 2, characterized in that: The explosive semi-finished product inlet pipe (1) is connected to a mixed explosive semi-finished product pump.

9. A compressed gas sensitization device for gel explosives according to claim 1 or 2, characterized in that: The compressed gas inlet pipe (2) is connected to the high-pressure air pump.

10. A compressed gas sensitization device for gel explosives according to claim 1 or 2, characterized in that: The additive inlet pipe (4) is connected to the additive pump.

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