Expansion rock breaking device capable of converting gas into air energy
By adding an extended fracturing tube to the rock-breaking device and making its length adjustable through a threaded connection, the problem of fixed height in existing devices is solved, improving the versatility of the device and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-15
- Publication Date
- 2026-03-31
AI Technical Summary
The existing rock-breaking devices have a fixed height, which means that more rock-breaking devices are needed when dealing with rock-breaking work at a certain depth. Furthermore, it is difficult to remove the devices as the depth increases, resulting in higher costs.
A gas-conversion air-energy expansion rock-breaking device was designed. By adding an extension fracturing tube below the first fracturing tube and connecting it with a threaded extension connector, the length of the fracturing tube can be adjusted to adapt to rock-breaking work at different depths.
The versatility of the rock-breaking device has been improved, enabling it to adapt to rock-breaking operations at greater depths, reducing the number of devices required and lowering costs.
Smart Images
Figure CN224066035U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of rock breaking devices, specifically relating to a gas-converted air-energy expansion rock breaking device. Background Technology
[0002] Gas expansion fracturing technology, which has advantages such as no exposed sparks during the fracturing process, high fracturing power, no need for blasting inspection, and simple operation, is widely used in mining, unblocking, and building demolition. In open-pit mining and mine tunneling, mining, roof caving, and ore bins, gas-to-air energy expansion rock breaking devices are often used.
[0003] Currently, existing rock-breaking devices often have a fixed height. This design limits the range of blasting they can perform. When encountering rock-breaking work requiring considerable depth, the only way to achieve deeper operations is through continuous rock breaking. Such deeper operations require a certain number of rock-breaking devices, which is costly. Furthermore, as the depth increases, it becomes more difficult to remove the rock-breaking devices.
[0004] Therefore, in view of the problem that existing rock-breaking devices are often highly fixed, which leads to the need for more rock-breaking devices when dealing with rock-breaking work of a certain depth, a gas-conversion air-energy expansion rock-breaking device with connecting parts can be designed. Utility Model Content
[0005] To overcome the problem that existing rock-breaking devices are often highly fixed, which leads to the need to consume more rock-breaking devices when dealing with rock-breaking work of a certain depth.
[0006] The technical solution of this utility model is as follows: a gas-conversion air-energy expansion rock-breaking device, including a No. 1 fracturing tube; and an extension connector. An extension fracturing tube is provided below the No. 1 fracturing tube, and an extension connector is connected between the No. 1 fracturing tube and the extension fracturing tube. The extension connector is composed of a middle section structure and threaded connecting pipes fixedly connected to the upper and lower sides of the middle section. A No. 1 connecting hole is opened on the middle section structure, and the No. 1 fracturing tube is threaded to the outside of the upper threaded connecting pipe, and the extension fracturing tube is threaded to the outside of the lower threaded connecting pipe.
[0007] Preferably, by first screwing the No. 1 fracturing tube to the upper threaded connecting tube of the extension connector, and then screwing the extended fracturing tube to the outside of the threaded connecting tube at the lower end of the extension connector, the extended fracturing tube and the No. 1 fracturing tube are connected. This allows the length of the fracturing tube to be changed, so that the No. 1 fracturing tube can be connected to different numbers of extension connectors and extended fracturing tubes according to the fracturing depth, thereby improving its versatility.
[0008] Preferably, an excitation tube is provided inside the No. 1 fracturing tube, a limit ring is fixedly connected to the top of the excitation tube, and a support ring is fixedly connected to the inside of the No. 1 fracturing tube, which is close to the bottom of the limit ring, and the excitation tube is inserted into the support ring.
[0009] As a preferred embodiment, the top of the No. 1 fracturing tube is threadedly connected to an inflation head located above the initiation tube, and an initiation sub-wire is placed inside the inflation head.
[0010] Preferably, the inflation head is threadedly connected to a connector that fits onto the outside of the detonation sub-line, and a lifting ring is fixedly connected to the top of the connector.
[0011] As a preferred embodiment, the excitation tube has a second connecting hole that penetrates the excitation tube, and an electric ignition wire that is fixedly connected to the detonation sub-wire is inserted into the second connecting hole.
[0012] As a preferred embodiment, a constant pressure shear plate is installed inside the No. 1 fracturing tube, located below the excitation tube, with one end of the constant pressure shear plate tightly attached to a combined pad.
[0013] As a preferred embodiment, the bottom end of the No. 1 fracturing tube is threadedly connected to a vent head located below the combined gasket, and a vent hole is provided on the outer side of the vent head.
[0014] The beneficial effects of this utility model are:
[0015] By adding an extended fracturing tube with the same structure below the existing No. 1 fracturing tube, and connecting the No. 1 fracturing tube and the extended fracturing tube with a threaded connection through an extended connecting column, the length of the No. 1 fracturing tube is increased, so that it can change its length according to the drilling depth to adapt to rock breaking work at more different depths and improve the versatility of the entire rock breaking device. Attached Figure Description
[0016] Figure 1 The diagram shown is an isometric three-dimensional structural schematic of the No. 1 fracturing tube of this utility model.
[0017] Figure 2 The diagram shown is an equiaxed three-dimensional structure of the extended fracturing tube of this utility model.
[0018] Figure 3 The diagram shown is a partial cross-sectional view of the extended fracturing tube of this utility model.
[0019] Figure 4 The diagram shown is an isometric three-dimensional structural schematic of the inflation head and connector of this utility model.
[0020] Figure 5 The diagram shown is an isometric three-dimensional structural schematic of the excitation tube of this utility model.
[0021] Figure 6 The diagram shown is a three-dimensional structural schematic of the No. 1 fracturing tube, the constant pressure shear plate, and the combined pad of this utility model.
[0022] Explanation of reference numerals in the attached diagram: 1. No. 1 fracturing tube; 2. Extension connector; 3. Extension fracturing tube; 4. No. 1 wiring hole; 5. Activation tube; 6. Limiting ring; 7. Support ring; 8. Inflation head; 9. Initiation sub-wire; 10. Connector; 11. Lifting ring; 12. No. 2 wiring hole; 13. Electric ignition wire; 14. Constant pressure shear plate; 15. Combined gasket; 16. Venting head. Detailed Implementation
[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0024] Please see Figures 1-6 This utility model provides an embodiment of a gas-to-air energy expansion rock-breaking device, including a first fracturing tube 1 and an extension connector 2. An extension fracturing tube 3 is disposed below the first fracturing tube 1, and the extension connector 2 connects the first fracturing tube 1 and the extension fracturing tube 3. The extension connector 2 is composed of a middle section structure and threaded connecting pipes fixedly connected to the upper and lower sides of the middle section. A first connecting hole 4 is provided in the middle section structure. The first fracturing tube 1 is threaded to the outside of the upper threaded connecting pipe, and the extension fracturing tube 3 is threaded to the outside of the lower threaded connecting pipe. The device is constructed by first screwing the first fracturing tube 1 onto the upper threaded connecting pipe of the extension connector 2, and then screwing the extension fracturing tube 3 onto the lower threaded connecting pipe. The threaded connection at the lower end of the long connector 2 connects the extended fracturing tube 3 and the first fracturing tube 1 to the outside, thereby changing the length of the fracturing tube. This allows the first fracturing tube 1 to connect different numbers of extended connectors 2 and extended fracturing tubes 3 according to the fracturing depth, improving its versatility. The first fracturing tube 1 is equipped with an excitation tube 5. The top end of the excitation tube 5 is fixedly connected to a limit ring 6. The inner side of the first fracturing tube 1 is fixedly connected to a support ring 7 that is close to the bottom end of the limit ring 6. The excitation tube 5 is inserted into the support ring 7. The excitation tube 5 heats the liquefied and compressed carbon dioxide, causing it to vaporize and expand, achieving the rock-breaking effect. The support ring 7 can provide a limit for the installation of the excitation tube 5 and define the space it occupies.
[0025] Please see Figures 3-6In this embodiment, the top end of the first fracturing tube 1 is threadedly connected to an inflation head 8 located above the activation tube 5. An initiation line 9 is placed inside the inflation head 8. The inflation head 8 prevents leakage from above after the carbon dioxide vaporizes and expands, serving a guiding function. The initiation line 9 controls the activation tube 5 to heat the carbon dioxide. A connector 10, sleeved on the outside of the initiation line 9, is threadedly connected above the inflation head 8. A lifting ring 11 is fixedly connected to the top end of the connector 10, allowing the user to easily remove the fracturing tube from the slot using a lifting device. A second connecting hole 12, penetrating the activation tube 5, is opened inside the second connecting hole 12, into which a device fixedly connected to the initiation line 9 is inserted. The electric ignition wire 13 heats the liquid compressed carbon dioxide. The electric ignition wire 13 passes through the second connecting hole 12 to facilitate its extension into the fracturing tube 3. The first fracturing tube 1 is equipped with a constant pressure shear plate 14 located below the excitation tube 5. One end of the constant pressure shear plate 14 is tightly attached to the combined gasket 15. The constant pressure shear plate 14 and the combined gasket 15 can effectively prevent liquid carbon dioxide from leaking from below. The bottom end of the first fracturing tube 1 is threadedly connected to a vent head 16 located below the combined gasket 15. A vent hole is opened on the outside of the vent head 16. When the liquid compressed carbon dioxide expands due to heating and vaporization, it will rush out from the vent hole of the vent head 16, and the pressure generated will break the surrounding rocks.
[0026] When carrying out the work, the workers first take the corresponding number of extension connectors 2 and extension fracturing tubes 3 according to the depth required for rock breaking. They connect the upper threaded connecting pipe of the extension connector 2 to the bottom of the No. 1 fracturing tube 1, and connect the extension fracturing tube 3 to the lower threaded connecting pipe of the extension connector 2. Then they take a new extension connector 2 and install it below the extension fracturing tube 3. They follow the above steps until the connection is completed.
[0027] Then, insert the ignition tube 5 into the first fracturing tube 1, so that the limiting ring 6 is tightly attached to the support ring 7. Then, install the inflation head 8 and then install the detonation sub-wire 9 above the inflation head 8. Pass the electric ignition wire 13 through the second connection hole 12 and several first connection holes 4 in sequence until it falls into the space of the last extension fracturing tube 3. Fill the extension fracturing tube 3 with liquid compressed carbon dioxide. After filling, insert the constant pressure shear plate 14 and the combination pad 15 into the extension fracturing tube 3. Then, install the vent head 16. Tighten the inflation head 8 and the vent head 16 by machine. Connect the connector 10 to the top of the inflation head 8. Insert the fracturing tube into the hole slot opened in the field.
[0028] After the sealing is completed, the detonator is charged through the detonator wire 9, which heats the liquid compressed carbon dioxide through the electric ignition wire 13, causing it to vaporize and expand and burst out from the vent hole of the vent head 16, breaking the surrounding rock layers and achieving the rock-breaking effect. After the rock-breaking is completed, the fracturing tube is pulled out and retrieved by hooking the lifting ring with the lifting device, and then reused later.
[0029] Through the above steps, an extended fracturing tube 3 with the same structure is installed below the existing No. 1 fracturing tube 1. The No. 1 fracturing tube 1 and the extended fracturing tube 3 are connected by a threaded extension connecting post, thereby increasing the length of the No. 1 fracturing tube 1. This allows it to change its length according to the drilling depth, so as to adapt to rock breaking work at more different depths and improve the versatility of the entire rock breaking device. This solves the problem that existing rock breaking devices are often at a fixed height, which leads to the need for more rock breaking devices when facing rock breaking work at a certain depth.
Claims
1. A gas conversion air energy rock breaking device, comprising a first cracking tube (1); characterized in that: Also include the extension connector (2), the lower part of the first cracking pipe (1) is provided with an extension cracking pipe (3), the first cracking pipe (1) and the extension cracking pipe (3) are connected by the extension connector (2), the extension connector (2) is composed of a middle section structure and a threaded connection pipe fixedly connected to the upper and lower sides of the middle section, a first wire hole (4) is formed in the middle section structure, the first cracking pipe (1) is threadedly connected to the outside of the threaded connection pipe at the upper end, and the extension cracking pipe (3) is threadedly connected to the outside of the threaded connection pipe at the lower end.
2. The gas conversion air-capable rock expansion device of claim 1, wherein: The first cracking pipe (1) is provided with an excitation pipe (5), the top end of the excitation pipe (5) is fixedly connected with a limiting ring (6), the inner side of the first cracking pipe (1) is fixedly connected with a supporting ring (7) close to the bottom end of the limiting ring (6), and the excitation pipe (5) is inserted into the supporting ring (7).
3. The gas conversion air-capable rock expansion device of claim 2, wherein: The top end of the first cracking pipe (1) is threadedly connected with an inflation head (8) arranged above the excitation pipe (5), and the inflation head (8) is placed with a detonating subwire (9).
4. The gas conversion air-capable rock expansion device of claim 3, wherein: The top end of the first cracking pipe (1) is threadedly connected with an inflation head (8) arranged above the excitation pipe (5), and the inflation head (8) is placed with a detonating subwire (9).
5. The gas conversion air-capable rock expansion device of claim 4, wherein: The top end of the first cracking pipe (1) is threadedly connected with an inflation head (8) arranged above the excitation pipe (5), and the inflation head (8) is placed with a detonating subwire (9).
6. The gas conversion air-capable rock expansion device of claim 2, wherein: The top end of the first cracking pipe (1) is threadedly connected with an inflation head (8) arranged above the excitation pipe (5), and the inflation head (8) is placed with a detonating subwire (9).
7. The gas conversion air-capable rock expansion device of claim 6, wherein: The top end of the first cracking pipe (1) is threadedly connected with an inflation head (8) arranged above the excitation pipe (5), and the inflation head (8) is placed with a detonating subwire (9). The top end of the first cracking pipe (1) is threadedly connected with an inflation head (8) arranged above the excitation pipe (5), and the inflation head (8) is placed with a detonating subwire (9).