Device for using solid-state dry ice phase change to fracture rock

Abstract

The present utility model relates to the technical field of blasting devices, and in particular relates to a device for using a solid-state dry ice phase change to fracture rock. The technical solution comprises: a fracturing pipe, a two-way air cylinder, and an air guide tube. The inside of the fracturing pipe is provided with a filler body, the inside of the fracturing pipe is provided with a heat insulation cover, the inside of the filler body is provided with the air guide tube, and the two-way air cylinder is arranged at both sides of an outer wall of an upper end of the filler body. The two-way air cylinder, the air guide tube and pins achieve the effect of fixing the fracturing pipe, ensuring the positional stability of the fracturing pipe, and ensuring that the fracturing pipe is convenient to fix.

Description

A device for breaking rock by solid dry ice phase change fracturing TECHNICAL FIELD

[0001] The utility model relates to a kind of device for breaking rock by solid dry ice phase change fracturing. BACKGROUND

[0002] Dry ice phase change fracturing is a method for rock breaking by using the principle of dry ice (solid carbon dioxide) expansion when temperature rises. Dry ice will not melt into liquid state under normal pressure, but directly sublimate into gaseous state. In this process, the volume of dry ice will expand rapidly, generating huge pressure. When dry ice is placed in the drill hole of rock, with the rise of temperature, dry ice begins to sublimate and expand rapidly, and the generated pressure acts on the hole wall, causing the rock to crack.

[0003] The prior art has many benefits, but 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 drill hole, affecting the fixing efficiency of the fracturing tube. TECHNICAL CONTENT

[0004] The utility model aims to provide a device for breaking rock by solid dry ice phase change fracturing to solve the problems raised in the background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a device for breaking rock by solid dry ice phase change fracturing, comprising a fracturing tube, a double-action air cylinder and an air guide pipe. The fracturing tube is internally provided with a filler body. The fracturing tube is internally provided with a heat preservation cover. The filler body is internally provided with an air guide pipe. The filler body is externally provided with a double-action air cylinder on both sides of the upper end.

[0006] When using the device for breaking rock by solid dry ice phase change fracturing in the technical scheme, the staff places the heat preservation cover and the detonating charge in the fracturing tube, and places the dry ice in the fracturing tube. The filler body shields the dry ice and the heat preservation cover. The air guide pipe ensures that the dry ice can gasify to a certain extent, so as to generate a certain pressure inside the air guide pipe. The gasified gas enters the double-action air cylinder through the communication pipe, and pushes the connecting plate and the spike into the drill hole.

[0007] Preferably, the heat preservation cover is located at the lower end of the filler body, and the heat preservation cover is internally provided with a detonating charge. The heat preservation cover protects the detonating charge, and the temperature generated when the detonating charge detonates will cause the dry ice to gasify.

[0008] Preferably, the upper end of the detonating charge is provided with a control line, and the control line is located inside the filler body. The external controller controls the work of the detonating charge through the control line.

[0009] Preferably, the one-side outer wall of the bidirectional air cylinder is provided with a communication pipe, and the communication pipe is communicated with the inner part of the air guide pipe.

[0010] Preferably, the outer wall of the two ends of the bidirectional air cylinder is provided with a connecting plate, and the outer wall of the connecting plate is provided with a plurality of round arrayed nails.

[0011] Preferably, the outer wall of the upper end of the air guide pipe is provided with a plug, and the plug is located at the upper end of the filler body.

[0012] Compared with the prior art, the bidirectional air cylinder, the inflation pipe and the nail are arranged, so that the cracking pipe is fixed, the staff places the heat shield and the detonating charge in the cracking pipe, and the dry ice is placed in the cracking pipe, the filler body shields the dry ice and the heat shield, the air guide pipe ensures that the dry ice can be gasified, so that a certain pressure is generated in the inner part of the air guide pipe, the gasified gas enters the inner part of the bidirectional air cylinder through the communication pipe, the connecting plate and the nail are inserted into the drill hole, the purpose of supporting and fixing the cracking pipe is achieved, the position stability of the cracking pipe is ensured, and the cracking pipe is convenient to fix. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 is a schematic view of the cracking pipe structure of the utility model;

[0014] Fig. 2 is a schematic view of the cracking pipe structure of the utility model;

[0015] Fig. 3 is a schematic view of the cracking pipe structure of the utility model;

[0016] Fig. 4 is a schematic view of the air guide pipe structure of the utility model.

[0017] In the drawing: 1, cracking pipe; 11, filler body; 12, air guide pipe; 13, heat shield; 14, detonating charge; 15, control line; 16, plug; 2, bidirectional air cylinder; 21, communication pipe; 22, connecting plate; 23, nail. DETAILED DESCRIPTION

[0018] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0019] Please refer to FIG. 1-4, two embodiments provided by the utility model:

[0020] Embodiment one: a device for rock breaking by solid dry ice phase change, comprising a cracking pipe 1, a bidirectional air cylinder 2 and a gas guide pipe 12, the cracking pipe 1 is internally provided with a filler body 11, the cracking pipe 1 is internally provided with a heat preservation cover 13, the filler body 11 is internally provided with the gas guide pipe 12, and the filler body 11 is externally provided with the bidirectional air cylinder 2 on both sides of the upper end.

[0021] The heat preservation cover 13 is located at the lower end of the filler body 11, and the heat preservation cover 13 is internally provided with a detonating explosive bag 14.

[0022] The detonating explosive bag 14 is externally provided with a control line 15, and the control line 15 is internally located in the filler body 11.

[0023] The bidirectional air cylinder 2 is externally provided with a communication pipe 21, and the communication pipe 21 is in communication with the gas guide pipe 12.

[0024] Embodiment two: a device for rock breaking by solid dry ice phase change, comprising a cracking pipe 1, a bidirectional air cylinder 2 and a gas guide pipe 12, the cracking pipe 1 is internally provided with a filler body 11, the cracking pipe 1 is internally provided with a heat preservation cover 13, the filler body 11 is internally provided with the gas guide pipe 12, and the filler body 11 is externally provided with the bidirectional air cylinder 2 on both sides of the upper end.

[0025] The heat preservation cover 13 is located at the lower end of the filler body 11, and the heat preservation cover 13 is internally provided with a detonating explosive bag 14.

[0026] The detonating explosive bag 14 is externally provided with a control line 15, and the control line 15 is internally located in the filler body 11.

[0027] The bidirectional air cylinder 2 is externally provided with a communication pipe 21, and the communication pipe 21 is in communication with the gas guide pipe 12.

[0028] The outer wall of the two-way cylinder 2 is provided with a connecting plate 22 at both ends, and the outer wall of the connecting plate 22 is provided with a circular array of nails 23. The two-way cylinder 2 drives the connecting plate 22 to move relatively or oppositely, and the nails 23 are inserted into the drill hole to fix the fracturing pipe 1.

[0029] 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. The plug 16 blocks the air guide pipe 12, the staff places the heat preservation cover 13 and the detonating charge 14 in the fracturing pipe 1, and places dry ice in the fracturing pipe 1, and the filler body 11 shields the dry ice and the heat preservation cover 13, and the air guide pipe 12 ensures that the dry ice can be gasified to a certain extent, so that a certain pressure is generated in the air guide pipe 12, the gasified gas enters the two-way cylinder 2 through the communication pipe 21, pushes the connecting plate 22 and the nail 23 into the drill hole, and the purpose of supporting and fixing the fracturing pipe 1 is achieved, the position stability of the fracturing pipe 1 is ensured, and the fracturing pipe 1 is convenient to fix.

[0030] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A device for fracturing rock using solid dry ice phase change, comprising a fracturing tube (1), a bidirectional cylinder (2), and a gas guide tube (12), characterized in that: The fracturing tube (1) is provided with a packing body (11) inside, the fracturing tube (1) is provided with a heat insulation cover (13) inside, the packing body (11) is provided with a gas guide tube (12) inside, and a two-way cylinder (2) is provided on both sides of the upper outer wall of the packing body (11).

2. The device for fracturing rock using solid dry ice phase change as described in claim 1, characterized in that: The heat insulation cover (13) is located at the lower end of the packing body (11), and the heat insulation cover (13) is provided with an initiating explosive charge (14).

3. The device for fracturing rock using solid dry ice phase change as described in claim 2, characterized in that: The upper end of the detonating charge (14) is provided with a control line (15), which is located inside the packing body (11).

4. The device for fracturing rock using solid dry ice phase change as described in claim 1, characterized in that: A connecting pipe (21) is inserted into 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 fracturing rock using solid dry ice phase change as described in claim 1, characterized in that: The two-way cylinder (2) has connecting plates (22) installed on the outer walls of both ends, and the outer walls of the connecting plates (22) are equipped with a circular array of rivets (23).

6. The device for fracturing rock using solid dry ice phase change as described in claim 1, characterized in that: A plug (16) is provided on the outer wall of the upper end of the air guide pipe (12), and the plug (16) is located at the upper end of the packing body (11).

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