Gas-fuelled rock breaking pipe

Abstract

The utility model discloses a kind of gas combustion type gravel blasting pipes, belong to gravel blasting pipe technical field.It is provided with core combustion chamber in pipe body, oxygen storehouse is fixedly arranged in core combustion chamber, oxygen hole is opened in the side of oxygen storehouse center, oxygen sealing strip that oxygen hole is sealed is arranged on oxygen hole, the top of pipe body is fixedly connected with expansion cap, the inside of expansion cap is hollow and is formed into gas storage warehouse, electric detonator is installed in the inside of expansion cap, the bottom of electric detonator extends into core combustion chamber.The utility model, when expansion cap is blocked to gravel lead hole, make gas explosion tube more stable and be fixed in lead hole, after pipe body detonation, the energy generated will be blown from lead hole, effectively reduce energy from lead hole leakage, gravel effect is better, and adopt hydrogen and oxygen as combustible gas, clean energy, more environmentally friendly and safe, after ignition, it can be detonated, detonation efficiency is high, meet engineering immediacy demand.

Description

Technical Field

[0001] This utility model relates to a gas-fired rock blasting pipe, belonging to the technical field of rock blasting pipes. Background Technology

[0002] For photovoltaic site leveling projects, scattered substation leveling, and building construction requiring blasting, rock blasting is often used. Traditional rock blasting mainly relies on explosive blasting or mechanical crushing methods, but these methods have significant drawbacks. While explosive blasting is highly efficient, it poses significant safety hazards, involves complex approval processes, and easily generates vibrations, flying rocks, dust, and harmful gas pollution. Mechanical crushing methods are relatively safe, but have low crushing efficiency, high energy consumption, and poor applicability to hard rock formations or large-volume rocks. In recent years, static crushing agents have emerged, which have improved environmental friendliness, but their reaction speed is slow and is significantly affected by ambient temperature, making it difficult to meet the immediate needs of projects. Therefore, we propose a gas-fired rock blasting pipe. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a gas-fired rock-breaking blasting pipe, which solves the problems of existing technologies such as the large safety hazards of gunpowder blasting, complicated approval process, and easy generation of vibration, flying stones, dust and harmful gas pollution; mechanical crushing method has high safety, but low crushing efficiency and high energy consumption, and poor applicability to hard rock layers or large-volume rocks; and static crushing agent has improved environmental protection, but slow reaction speed and obvious restriction by ambient temperature, making it difficult to meet the immediate needs of engineering.

[0004] The technical problem to be solved by this utility model is achieved by the following technical solution:

[0005] A gas-fired rock blasting pipe includes a pipe body with a core combustion chamber inside. An oxygen chamber is fixedly installed inside the core combustion chamber. An oxygen hole is opened on one side of the center of the oxygen chamber. An oxygen sealing strip is installed on the oxygen hole to seal the oxygen hole. An expansion cap is fixedly connected to the top of the pipe body. The interior of the expansion cap is hollow to form a gas storage chamber. An electric detonator is installed inside the expansion cap. The bottom end of the electric detonator extends into the core combustion chamber. An electronic lead is electrically connected inside the electric detonator. A through hole is opened on the side of the expansion cap facing the pipe body. The end of the oxygen sealing strip away from the oxygen chamber passes through the through hole and is fixedly connected to the inner wall of the expansion cap. The oxygen sealing strip seals the through hole.

[0006] By adopting the above technical solution, during use, the blasting tube can be placed inside the gravel inlet hole, and then ignited in stages using an electric detonator. First, the flammable gas inside the expansion cap is ignited, causing the expansion cap to expand and deform. The expansion cap can then block the gravel inlet hole, venting the blasting tube inside the inlet hole. After the expansion cap deforms, it will pull the oxygen sealing strip, causing it to separate from the oxygen chamber. The oxygen inside the oxygen chamber will then be released through the oxygen hole and enter the tube body to mix with hydrogen. After the delay effect of the delay module, the electrical detonator can ignite the mixture of oxygen and hydrogen to achieve the effect of blasting rocks. When the expansion cap blocks the rock blasting inlet, the gas detonation tube is more firmly fixed in the inlet. After the tube body is detonated, the energy generated will explode from the inlet, effectively reducing energy leakage from the inlet and improving the rock blasting effect. In addition, using hydrogen and oxygen as combustible gases is a clean energy source, which is more environmentally friendly and safer. It can be detonated immediately after ignition, with high detonation efficiency, meeting the immediate needs of engineering.

[0007] The present invention is further configured such that: the tube body is composed of a protective layer and a control layer, with the protective layer pressed onto the outside of the control layer.

[0008] The present invention is further configured such that: the electrical detonator includes a primary ignition head, a secondary ignition head, and an electronic detonator; the secondary ignition head is electrically connected to a delay module via a wire; the delay module is electrically connected to the primary ignition head via a wire; the primary ignition head and the secondary ignition head are respectively electrically connected to the electronic detonator via wires; and the electronic detonator is electrically connected to an electronic lead via a wire.

[0009] The present invention is further configured such that: a fixing block is installed inside the electrical detonator, and the wires of the electronic detonator pass through the fixing block.

[0010] By adopting the above technical solution, the electrical detonator uses a primary ignition head to first ignite the flammable gas inside the expansion cap. After the delay effect of the delay module, the secondary ignition head then ignites the hydrogen-oxygen mixture inside the tube, thus achieving two-stage detonation. The fixing block can fix the wire circuit and prevent the circuit from falling off.

[0011] The present invention is further characterized in that: the outer surface of the expansion cap is fixedly connected with barbs along the circumferential direction.

[0012] By adopting the above technical solution, the combustible gas inside the expansion cap is detonated, causing the expansion cap to deform. Under the impact of instantaneous energy, the hooks on the expansion cap will firmly pierce into the adjacent rock wall.

[0013] The present invention is further configured such that the oxygen sealing tape is made of polyimide.

[0014] By adopting the above technical solution, the oxygen sealing tape made of polyimide has the functions of high temperature resistance and flame retardancy, which can prevent damage to the oxygen sealing tape during the first stage of detonation, and can seal the through hole before detonation to prevent the flammable gas inside the expansion cap from mixing with the hydrogen inside the tube.

[0015] The present invention is further configured such that the oxygen chamber is cylindrical in shape and hollow inside.

[0016] By adopting the above technical solution, the oxygen chamber does not completely block the inner wall of the tube. After the oxygen inside the oxygen chamber is released, it is easy to mix with the hydrogen inside the tube.

[0017] The beneficial effects of this invention are as follows: During use, the blasting tube can be placed inside the gravel inlet hole, and then ignited in stages using an electric detonator. First, the flammable gas inside the expansion cap is ignited, causing the expansion cap to expand and deform. The expansion cap can then block the gravel inlet hole, allowing the gas-fired blasting tube to escape. After the expansion cap deforms, it pulls the oxygen sealing strip, causing it to separate from the oxygen chamber. Oxygen inside the oxygen chamber is then released through the oxygen hole and enters the tube body to mix with hydrogen. After the delay effect of the delay module, the electrical detonator can ignite the mixture of oxygen and hydrogen to achieve the effect of blasting rocks. When the expansion cap blocks the rock blasting inlet, the gas detonation tube is more firmly fixed in the inlet. After the tube body is detonated, the energy generated will explode from the inlet, effectively reducing energy leakage from the inlet and improving the rock blasting effect. In addition, using hydrogen and oxygen as combustible gases is a clean energy source, which is more environmentally friendly and safer. It can be detonated immediately after ignition, with high detonation efficiency, meeting the immediate needs of engineering. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0019] Figure 2 This is a top sectional view of the oxygen chamber of this utility model.

[0020] Figure 3 This is a front view cross-sectional structural diagram of the expansion cap of this utility model;

[0021] Figure 4 This is a cross-sectional structural diagram of the electrical detonator of this utility model;

[0022] Figure 5 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0023] In the diagram: 1. Tube body; 101. Protective layer; 102. Control layer; 103. Core combustion chamber; 2. Oxygen chamber; 3. Expansion cap; 4. Electrical igniter; 401. Secondary igniter; 402. Delay module; 403. Primary igniter; 404. Electronic igniter; 405. Fixing block; 5. Hook; 6. Electronic lead; 7. Oxygen port; 8. Oxygen sealing tape; 9. Through hole. Detailed Implementation

[0024] In order to make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0025] Example 1

[0026] like Figure 1 , Figure 2 and Figure 5 As shown, a gas-fired rock-breaking blasting pipe includes a pipe body 1, within which a core combustion chamber 103 is disposed. The pipe body 1 consists of a protective layer 101 and a regulating layer 102. The protective layer 101 is pressed onto the outside of the regulating layer 102. The protective layer 101 is made of a metallic material, such as high-strength steel, titanium alloy, or nickel-based alloy. The regulating layer 102 is made of sodium-magnesium-aluminum composite material. Sodium-magnesium-aluminum composite material has high strength and good ductility. When combustion occurs inside the core combustion chamber 103, the ductility of the sodium-magnesium-aluminum material can absorb some of the impact energy, thus buffering the shock wave. The core combustion chamber 103... The core combustion chamber 103 is filled with hydrogen and contains an oxygen chamber 2. The oxygen chamber 2 is cylindrical and hollow. An oxygen hole 7 is provided on one side of the center of the oxygen chamber 2. An oxygen sealing strip 8 is provided on the oxygen hole 7 to seal the oxygen hole 7. The oxygen sealing strip 8 is made of polyimide. The polyimide oxygen sealing strip 8 has the functions of high temperature resistance and flame retardancy. It can prevent damage to the oxygen sealing strip 8 during the first stage of detonation. Before detonation, it can seal the through hole 9 to prevent the flammable gas inside the expansion cap 3 from mixing with the hydrogen inside the tube 1.

[0027] like Figure 1 and Figure 3As shown, an expansion cap 3 is fixedly connected to the top of the tube body 1. The expansion cap 3 is made of shape memory alloy Ni-Ti. The interior of the expansion cap 3 is hollow, forming a gas storage chamber. The gas storage chamber of the expansion cap 3 is filled with a combustible gas, which can be a mixture of hydrogen and oxygen or a mixture of propane and oxygen. When the combustion temperature of the combustible gas inside the expansion cap 3 reaches 80-120 degrees Celsius, it will instantly expand and lock the inlet opening within 0.1-2 seconds. An electrical detonator 4 is installed inside the expansion cap 3. The bottom end of the electrical detonator 4 extends into the core combustion chamber 103. An electronic lead 6 is electrically connected inside the electrical detonator 4. A through hole 9 is opened on the side of the expansion cap 3 facing the tube body 1. The end of the oxygen sealing strip 8 away from the oxygen chamber 2 passes through the through hole 9 and is fixedly connected to the inner wall of the expansion cap 3. The oxygen sealing strip 8 seals the through hole 9.

[0028] like Figure 4 As shown, the electrical detonator 4 includes a primary ignition head 403, a secondary ignition head 401, and an electronic detonator 404. The secondary ignition head 401 is electrically connected to a delay module 402 via a wire. The delay module 402 is electrically connected to the primary ignition head 403 via a wire. The primary ignition head 403 and the secondary ignition head 401 are respectively electrically connected to the electronic detonator 404 via wires. The electronic detonator 404 is electrically connected to the electronic lead 6 via a wire. A fixing block 405 is installed inside the electrical detonator 4, and the wires of the electronic detonator 404 pass through the fixing block 405.

[0029] like Figure 3 As shown, the outer surface of the expansion cap 3 is fixedly connected with hooks 5 along the circumferential direction.

[0030] In use, the blasting tube can be placed inside the gravel inlet, and then ignited in stages using the electrical detonator 4. First, the flammable gas inside the expansion cap 3 is ignited, causing the expansion cap 3 to expand and deform. The expansion cap 3 can then block the gravel inlet, venting the blasting tube inside the inlet. After the expansion cap 3 deforms, it will pull the oxygen sealing strip 8, causing it to separate from the oxygen chamber 2. The oxygen inside the oxygen chamber 2 will then be released through the oxygen hole 7, entering the tube body 1 to mix with hydrogen. After the delay effect of the delay module 402, the electrical detonator 4 can ignite the mixture of oxygen and hydrogen to achieve the effect of blasting stone. When the expansion cap 3 blocks the stone blasting hole, the gas explosion tube is more firmly fixed in the hole. After the tube body 1 is detonated, the energy generated will explode from the hole, effectively reducing the energy leakage from the hole. The stone blasting effect is better. In addition, hydrogen and oxygen are used as combustible gases, which are clean energy sources, making them more environmentally friendly and safer. The explosion can be carried out immediately after ignition, with high detonation efficiency, meeting the immediate needs of engineering.

[0031] The electrical detonator 4 uses a primary ignition head 403 to first ignite the flammable gas inside the expansion cap 3. After the delay effect of the delay module 402, the secondary ignition head 401 ignites the hydrogen-oxygen mixture inside the tube body 1, thus achieving two-stage detonation. The fixing block 405 can fix the wire circuit to prevent the circuit from falling off.

[0032] The combustible gas inside the expansion cap 3 is detonated, causing the expansion cap 3 to deform. The hooks 5 on the expansion cap 3 will then be firmly embedded into the adjacent rock wall under the impact of instantaneous energy.

[0033] The oxygen chamber 2 does not completely block the inner wall of the tube 1. After the oxygen inside the oxygen chamber 2 is released, it is easy to mix with the hydrogen inside the tube 1.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A gas-fired rock-breaking blasting pipe, comprising a pipe body (1), characterized in that: The tube body (1) is provided with a core combustion chamber (103), and an oxygen chamber (2) is fixedly provided in the core combustion chamber (103). An oxygen hole (7) is provided on one side of the center of the oxygen chamber (2). An oxygen sealing strip (8) is provided on the oxygen hole (7) to seal the oxygen hole (7). An expansion cap (3) is fixedly connected to the top of the tube body (1). The interior of the expansion cap (3) is hollow to form a gas storage chamber. An electrical detonator (4) is installed inside the expansion cap (3). The bottom end of the electrical detonator (4) extends into the core combustion chamber (103). An electronic lead (6) is electrically connected inside the electrical detonator (4). A through hole (9) is provided on the side of the expansion cap (3) facing the tube body (1). The end of the oxygen sealing strip (8) away from the oxygen chamber (2) passes through the through hole (9) and is fixedly connected to the inner wall of the expansion cap (3). The oxygen sealing strip (8) seals the through hole (9).

2. The gas-fired rock-breaking blasting pipe according to claim 1, characterized in that: The tube body (1) is composed of a protective layer (101) and a control layer (102), with the protective layer (101) pressed against the outside of the control layer (102).

3. The gas-fired rock-breaking blasting pipe according to claim 1, characterized in that: The electrical detonator (4) includes a primary ignition head (403), a secondary ignition head (401), and an electronic detonator (404). The secondary ignition head (401) is electrically connected to a delay module (402) via a wire. The delay module (402) is electrically connected to the primary ignition head (403) via a wire. The primary ignition head (403) and the secondary ignition head (401) are respectively electrically connected to the electronic detonator (404) via wires. The electronic detonator (404) is electrically connected to an electronic lead (6) via a wire.

4. The gas-fired rock-breaking blasting pipe according to claim 3, characterized in that: The electrical detonator (4) has a fixing block (405) installed inside, and the wires of the electronic detonator (404) pass through the fixing block (405).

5. The gas-fired rock-breaking blasting pipe according to claim 1, characterized in that: The outer surface of the expansion cap (3) is fixedly connected with barbs (5) along the circumferential direction.

6. The gas-fired rock-breaking blasting pipe according to claim 1, characterized in that: The oxygen sealing tape (8) is made of polyimide.

7. The gas-fired rock-breaking blasting pipe according to claim 1, characterized in that: The oxygen chamber (2) is cylindrical in shape and hollow inside.

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