Device for breaking rock through solid dry ice phase change fracturing

Abstract

The utility model relates to the technical field of blasting equipment, in particular to a device for cracking and breaking rocks through solid dry ice phase change. According to the technical scheme, the device comprises a fracturing pipe, two-way air cylinders and an air guide pipe, a filler body is arranged in the fracturing pipe, a heat preservation cover is arranged in the fracturing pipe, the air guide pipe is arranged in the filler body, and the two-way air cylinders are arranged on the two sides of the outer wall of the upper end of the filler body. And the effect of fixing the fracturing pipe is achieved, the position stability of the fracturing pipe is guaranteed, and it is guaranteed that the fracturing pipe is convenient to fix.

Description

Technical Field

[0001] The utility model relates to the technical field of blasting equipment, in particular to a device for cracking and breaking rocks by utilizing phase change of solid dry ice. Background Art

[0002] Dry ice phase change cracking is a method of breaking rocks by using the principle that dry ice (solid carbon dioxide) undergoes phase change expansion when the temperature rises. Dry ice will not melt into liquid under normal pressure, but will directly change from solid to gas. In this process, the volume of dry ice will expand rapidly, generating huge pressure. When dry ice is placed in a drilled hole in the rock, as the temperature rises, the dry ice begins to change and expand rapidly. The pressure generated acts on the hole wall, causing the rock to crack.

[0003] Although the prior art has many benefits during use, it still has the following problems: it lacks a fixing structure for the fracturing tube, which makes it inconvenient to fix the fracturing tube inside the borehole, affecting the fixing efficiency of the fracturing tube. Utility Model Content

[0004] The utility model aims to provide a device for cracking and breaking rocks by utilizing phase change of solid dry ice, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for fracturing and breaking rocks by utilizing phase change of solid dry ice, comprising a fracturing tube, a two-way cylinder and an air guide tube, a packing body is arranged inside the fracturing tube, a heat preservation cover is arranged inside the fracturing tube, an air guide tube is arranged inside the packing body, and two-way cylinders are arranged on both sides of the outer wall of the upper end of the packing body.

[0006] When using a device for fracturing and breaking rocks by phase change of solid dry ice in the technical solution, the staff places the thermal insulation cover and the detonating charge inside the fracturing tube, and places the dry ice inside the fracturing tube, and the filler body shields the dry ice and the thermal insulation cover, and the air guide tube ensures that the dry ice can be vaporized to a certain extent, thereby generating a certain pressure inside the air guide tube, and the vaporized gas enters the two-way cylinder through the connecting tube, pushing the connecting plate and the nails into the drill hole.

[0007] Preferably, the heat-insulating cover is located at the lower end of the filler body, and an explosive package is arranged inside the heat-insulating cover. The heat-insulating cover protects the explosive package, and the temperature generated when the explosive package is detonated can vaporize the dry ice.

[0008] Preferably, a control line is provided at the upper end of the detonating charge, and the control line is located inside the filler body. An external controller controls the detonating charge to work via the control line.

[0009] Preferably, a connecting pipe is inserted and installed on the outer wall of one side of the bidirectional cylinder, and the connecting pipe is connected with the inside of the air guide pipe. The gas inside the air guide pipe enters the inside of the bidirectional cylinder through the connecting pipe.

[0010] Preferably, the outer walls of both ends of the bidirectional cylinder are equipped with connecting plates, and the outer walls of the connecting plates are equipped with nails distributed in a circular array. The bidirectional cylinder drives the connecting plates to move relative to or towards each other, and the nails are inserted into the drilled holes to fix the fracturing tube.

[0011] Preferably, a plug is provided on the outer wall of the upper end of the air guide tube, and the plug is located at the upper end of the filler body. The plug blocks the air guide tube.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the utility model achieves the effect of fixing the fracturing tube by arranging a two-way air cylinder, an air filling tube and nails; the staff places the heat preservation cover and the detonating charge inside the fracturing tube, and places the dry ice inside the fracturing tube, and the filler body shields the dry ice and the heat preservation cover; the air guide tube ensures that the dry ice can be vaporized to a certain extent, thereby generating a certain pressure inside the air guide tube; the vaporized gas enters the two-way air cylinder through the connecting tube, pushes the connecting plate and the nails into the drilled hole, and achieves the purpose of supporting and fixing the fracturing tube, ensuring the position stability of the fracturing tube and ensuring that the fracturing tube is easy to fix. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the appearance of the fracturing tube structure of the utility model;

[0014] Figure 2 It is a cross-sectional schematic diagram of the fracture tube structure of the utility model;

[0015] Figure 3 It is a partially enlarged schematic diagram of the fracturing tube structure of the utility model;

[0016] Figure 4 It is a partially enlarged schematic diagram of the air guide tube structure of the utility model.

[0017] In the figure: 1. cracking tube; 11. filler body; 12. air guide tube; 13. heat insulation cover; 14. detonating charge; 15. control line; 16. plug; 2. two-way cylinder; 21. connecting pipe; 22. connecting plate; 23. nailing. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-Figure 4 , the utility model provides two embodiments:

[0020] Embodiment 1: A device for fracturing and breaking rocks by utilizing phase change of solid dry ice, comprising a fracturing tube 1, a two-way cylinder 2 and an air guide tube 12, wherein a packing body 11 is arranged inside the fracturing tube 1, a heat preservation cover 13 is arranged inside the fracturing tube 1, an air guide tube 12 is arranged inside the packing body 11, and two-way cylinders 2 are arranged on both sides of the outer wall of the upper end of the packing body 11.

[0021] The heat-insulating cover 13 is located at the lower end of the filler body 11, and an explosive package 14 is arranged inside the heat-insulating cover 13. The heat-insulating cover 13 protects the explosive package 14, and the temperature generated when the explosive package 14 is detonated can gasify the dry ice.

[0022] A control line 15 is provided at the upper end of the explosive package 14, and the control line 15 is located inside the filler body 11. An external controller controls the operation of the explosive package 14 through the control line 15.

[0023] A connecting pipe 21 is installed on the outer wall of one side of the two-way cylinder 2, and the connecting pipe 21 is connected to the inside of the air duct 12. The gas inside the air duct 12 enters the inside of the two-way cylinder 2 through the connecting pipe 21. The staff puts the heat preservation cover 13 and the detonating charge 14 inside the fracturing tube 1, and puts the dry ice inside the fracturing tube 1, and the filler body 11 shields the dry ice and the heat preservation cover 13, and the air duct 12 ensures that the dry ice can be gasified to a certain extent.

[0024] Embodiment 2: A device for fracturing and breaking rocks by utilizing phase change of solid dry ice, comprising a fracturing tube 1, a two-way cylinder 2 and an air guide tube 12, wherein a packing body 11 is arranged inside the fracturing tube 1, a heat preservation cover 13 is arranged inside the fracturing tube 1, an air guide tube 12 is arranged inside the packing body 11, and two-way cylinders 2 are arranged on both sides of the outer wall of the upper end of the packing body 11.

[0025] The heat-insulating cover 13 is located at the lower end of the filler body 11, and an explosive package 14 is arranged inside the heat-insulating cover 13. The heat-insulating cover 13 protects the explosive package 14, and the temperature generated when the explosive package 14 is detonated can gasify the dry ice.

[0026] A control line 15 is provided at the upper end of the explosive package 14, and the control line 15 is located inside the filler body 11. An external controller controls the operation of the explosive package 14 through the control line 15.

[0027] A connecting pipe 21 is inserted and installed on the outer wall of one side of the two-way cylinder 2, and the connecting pipe 21 is connected to the inside of the air guide pipe 12. The gas inside the air guide pipe 12 enters the inside of the two-way cylinder 2 through the connecting pipe 21.

[0028] The outer walls of both ends of the bidirectional cylinder 2 are both provided with connecting plates 22, and the outer walls of the connecting plates 22 are provided with piercing nails 23 distributed in a circular array. The bidirectional cylinder 2 drives the connecting plates 22 to move relative to or toward each other, and the piercing nails 23 are inserted into the borehole to fix the fracturing pipe 1.

[0029] The upper outer wall of the air guide tube 12 is provided with a plug 16, which is located at the upper end of the filler body 11. The plug 16 blocks the air guide tube 12, and the staff places the heat preservation cover 13 and the detonating charge 14 inside the fracturing tube 1, and places the dry ice inside the fracturing tube 1, and the filler body 11 shields the dry ice and the heat preservation cover 13. The air guide tube 12 ensures that the dry ice can be gasified to a certain extent, so that a certain pressure is generated inside the air guide tube 12, and the gasified gas enters the inside of the two-way cylinder 2 through the connecting pipe 21, pushing the connecting plate 22 and the nail 23 into the inside of the drill hole, achieving the purpose of supporting and fixing the fracturing tube 1, ensuring the position stability of the fracturing tube 1, and ensuring that the fracturing tube 1 is easy to fix.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A device for fracturing and breaking rocks by using solid dry ice phase change, comprising a fracturing tube (1), a two-way cylinder (2) and an air guide tube (12), characterized in that: A filler body (11) is arranged inside the fracturing tube (1), a heat-insulating cover (13) is arranged inside the fracturing tube (1), an air guide pipe (12) is arranged inside the filler body (11), and two-way cylinders (2) are arranged on both sides of the outer wall of the upper end of the filler body (11).

2. The device for cracking and breaking rocks by using solid dry ice phase change according to claim 1, characterized in that: The heat-insulating cover (13) is located at the lower end of the filler body (11), and a detonating charge (14) is arranged inside the heat-insulating cover (13).

3. The device for cracking and breaking rocks by using solid dry ice phase change according to claim 2, characterized in that: A control line (15) is provided at the upper end of the detonating charge (14), and the control line (15) is located inside the filler body (11).

4. The device for cracking and breaking rocks by using solid dry ice phase change according to claim 1, characterized in that: A connecting pipe (21) is inserted and installed on the outer wall of one side of the bidirectional cylinder (2), and the connecting pipe (21) is connected to the inside of the air guide pipe (12).

5. The device for cracking and breaking rocks by using solid dry ice phase change according to claim 1, characterized in that: The outer walls of both ends of the bidirectional cylinder (2) are both installed with connecting plates (22), and the outer walls of the connecting plates (22) are installed with piercing nails (23) distributed in a circular array.

6. The device for cracking and breaking rocks by using solid dry ice phase change according to claim 1, characterized in that: The outer wall of the upper end of the air guide pipe (12) is provided with a plug (16), and the plug (16) is located at the upper end of the filler body (11).

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