Liquid oxygen gas fracturing device

Abstract

The utility model discloses a liquid oxygen gas fracturing device, which relates to the technical field of rock crushing and comprises a flexible outer sleeve. One end of the liquid inlet pipe penetrates through the flexible outer sleeve and extends into the inner bottom of the flexible outer sleeve, and the other end of the liquid inlet pipe is located outside the flexible outer sleeve; one end of the exhaust pipe penetrates through the flexible outer sleeve and extends into the inner top of the flexible outer sleeve, and the other end of the exhaust pipe is located outside the flexible outer sleeve; a plurality of oxygen leakage holes are formed in the side wall, located in the flexible outer sleeve, of the liquid inlet pipe. According to the liquid oxygen gas fracturing device, through the design that the oxygen leakage holes are formed in the side wall of the liquid inlet pipe and the spiral coil pipe and the oxygen permeation holes are additionally arranged in the second embodiment, liquid oxygen can enter the flexible outer sleeve from multiple positions, and compared with an existing mode that liquid oxygen is conveyed through a single pipeline, the liquid oxygen fracturing device is more convenient to use. The internal space of the whole fracturing pipe can be rapidly and uniformly filled, the filling efficiency is greatly improved, the operation time is effectively shortened, and the energy consumption is reduced.

Description

Technical Field

[0001] This utility model relates to the field of rock crushing technology, and in particular to a liquid oxygen gas fracturing device. Background Technology

[0002] Rock fracturing technology is widely used in fields such as rock mining, mining engineering, and geological exploration to improve rock crushing efficiency and resource recovery rate.

[0003] While existing liquid oxygen fracturing devices can introduce liquid oxygen into the fracturing tube via a liquid oxygen delivery pipe, thereby utilizing the low-temperature properties of liquid oxygen to react and create fractures in the rock, they have significant drawbacks in practical applications. Specifically, existing devices rely on a single pipeline to deliver liquid oxygen, making the filling process within the fracturing tube extremely slow and difficult to quickly and evenly fill the entire internal space, resulting in low filling efficiency. This inefficient filling method not only prolongs operation time and increases energy consumption but may also affect the fracturing effect due to uneven liquid oxygen distribution, thereby reducing the efficiency and quality of rock breaking. Therefore, improvements to the existing technology are necessary. Utility Model Content

[0004] The purpose of this invention is to provide a liquid oxygen gas fracturing device to solve the problems mentioned in the background art.

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0006] A liquid oxygen gas fracturing device, comprising

[0007] Flexible outer sleeve;

[0008] The inlet pipe has one end passing through the flexible outer sleeve and extending into the bottom of the flexible outer sleeve, while the other end is located outside the flexible outer sleeve.

[0009] An exhaust pipe, one end of which passes through a flexible outer sleeve and extends into the top of the flexible outer sleeve, and the other end is located outside the flexible outer sleeve;

[0010] The liquid inlet pipe inside the flexible outer sleeve has several oxygen leakage holes on its side wall. Several combustible materials are sleeved on the outside of the liquid inlet pipe. A resistance wire igniter is fixedly connected to the side wall of the combustible material. A wire is electrically connected to the end of the resistance wire igniter. The end of the wire away from the resistance wire igniter passes through the flexible outer sleeve and connects to the ignition detonator.

[0011] Preferably, the plurality of oxygen leakage holes are arranged at equal intervals along the length of the liquid inlet pipe.

[0012] Preferably, the distance between adjacent oxygen leakage holes is 20cm.

[0013] Preferably, the combustible material is composed of toilet paper rolls.

[0014] Preferably, the flexible outer sleeve is made of polyethylene.

[0015] Preferably, it also includes a spiral coil disposed at the bottom of the flexible outer sleeve, one end of the spiral coil being connected to the outer wall of the end of the liquid inlet pipe, and a plurality of oxygen permeation holes being provided on the outer wall of the spiral coil, with the oxygen permeation holes facing upward.

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] This invention, by opening multiple oxygen leakage holes on the side wall of the inlet pipe and adding a spiral coil and oxygen permeation holes in Embodiment 2, allows liquid oxygen to enter the interior of the flexible outer sleeve from multiple locations. Compared with the existing method of transporting liquid oxygen through a single pipe, it can fill the entire internal space of the fracturing tube more quickly and evenly, greatly improving filling efficiency, effectively shortening operation time, and reducing energy consumption. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of an embodiment of a liquid oxygen gas fracturing device;

[0019] Figure 2 This is a partial structural schematic diagram of an embodiment of a liquid oxygen gas fracturing device;

[0020] Figure 3 This is a schematic diagram of a spiral coil structure, which is an embodiment of a liquid oxygen gas fracturing device.

[0021] In the diagram: 1. Flexible outer sleeve; 2. Liquid inlet pipe; 3. Exhaust pipe; 4. Oxygen leakage hole; 5. Combustible material; 6. Resistance wire igniter; 7. Wire; 8. Spiral coil; 9. Oxygen permeation hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1:

[0024] Please see Figures 1-2 As shown, this utility model is a liquid oxygen gas fracturing device, comprising:

[0025] Flexible outer sleeve 1;

[0026] Liquid inlet pipe 2, one end of which passes through the flexible outer sleeve 1 and extends into the bottom of the flexible outer sleeve 1, and the other end is located outside the flexible outer sleeve 1;

[0027] Exhaust pipe 3, one end of which passes through the flexible outer sleeve 1 and extends into the top of the flexible outer sleeve 1, and the other end is located outside the flexible outer sleeve 1;

[0028] The liquid inlet pipe 2 located inside the flexible outer sleeve 1 has several oxygen leakage holes 4 on its side wall. Several combustible materials 5 are sleeved on the outside of the liquid inlet pipe 2. A resistance wire igniter 6 is fixedly connected to the side wall of the combustible material 5. A wire 7 is electrically connected to the end of the resistance wire igniter 6. The end of the wire 7 away from the resistance wire igniter 6 passes through the flexible outer sleeve 1 and is connected to the ignition detonator.

[0029] As described above, this liquid oxygen gas fracturing device, by opening an oxygen leakage hole 4 on the side wall of the inlet pipe 2 and covering it with a combustible material 5 and a resistance wire igniter 6, uses the igniter 6 to ignite the combustible material 5, allowing the liquid oxygen to undergo a physical reaction within the flexible outer tube 1, generating high-temperature, high-pressure gas, thereby forming fissures within the rock and achieving rock fracturing. Simultaneously, the design of the oxygen leakage hole 4 allows liquid oxygen to enter the flexible outer tube 1 from multiple locations and effectively absorb into the combustible material 5. Compared to existing methods of transporting liquid oxygen through a single pipe, this method can more quickly and evenly fill the entire internal space of the fracturing tube, improving filling efficiency and thus enhancing the efficiency and quality of rock fracturing.

[0030] Depend on Figure 2 It can be seen that the multiple oxygen leakage holes 4 are arranged at equal intervals along the length of the liquid inlet pipe 2.

[0031] The distance between adjacent oxygen leakage holes 4 is 20cm.

[0032] As can be seen from the above, this arrangement can ensure that the liquid oxygen is distributed more evenly in the flexible outer sleeve 1, and avoid the liquid oxygen from concentrating in one place. This ensures that the combustible material 5 can fully contact and react with the liquid oxygen, further improving the stability and reliability of the fracturing effect, making the generation of rock fissures more uniform, which is beneficial to the subsequent rock crushing and mining.

[0033] Depend on Figures 1-2 It is known that the combustible material 5 is composed of toilet paper rolls.

[0034] As can be seen from the above, toilet paper rolls are characterized by being flammable, low-cost, and easy to process. Upon contact with liquid oxygen and ignited by the resistance wire igniter 6, they burn rapidly and generate heat, causing the liquid oxygen to quickly vaporize and expand, forming a high-temperature, high-pressure gas that drives the rock to create fissures. Simultaneously, the structure of the toilet paper roll also facilitates the diffusion of liquid oxygen within and around it, further increasing the contact area between the liquid oxygen and the combustible material 5, thus enhancing the reaction effect.

[0035] The flexible outer sleeve 1 is made of polyethylene.

[0036] As can be seen from the above, polyethylene has good flexibility, corrosion resistance and a certain strength, and can adapt to the use requirements in complex environments such as rock mining.

[0037] Example 2:

[0038] A liquid oxygen gas fracturing device, comprising

[0039] Flexible outer sleeve 1;

[0040] Liquid inlet pipe 2, one end of which passes through the flexible outer sleeve 1 and extends into the bottom of the flexible outer sleeve 1, and the other end is located outside the flexible outer sleeve 1;

[0041] Exhaust pipe 3, one end of which passes through the flexible outer sleeve 1 and extends into the top of the flexible outer sleeve 1, and the other end is located outside the flexible outer sleeve 1;

[0042] The liquid inlet pipe 2 located inside the flexible outer sleeve 1 has several oxygen leakage holes 4 on its side wall. Several combustible materials 5 are sleeved on the outside of the liquid inlet pipe 2. A resistance wire igniter 6 is fixedly connected to the side wall of the combustible material 5. A wire 7 is electrically connected to the end of the resistance wire igniter 6. The end of the wire 7 away from the resistance wire igniter 6 passes through the flexible outer sleeve 1 and is connected to the ignition detonator.

[0043] refer to Figure 3 As shown, it also includes a spiral coil 8 disposed at the bottom of the inner side of the flexible outer sleeve 1. One end of the spiral coil 8 is connected to the outer wall of the tail end of the liquid inlet pipe 2. A plurality of oxygen permeation holes 9 are provided on the outer wall of the spiral coil 8, and the oxygen permeation holes 9 are arranged facing upward.

[0044] As can be seen from the above, based on Example 1, the addition of the spiral coil 8 and oxygen permeation holes 9 further optimizes the distribution and filling effect of liquid oxygen. The spiral coil 8 is located at the bottom inside the flexible outer sleeve 1 and is connected to the tail end of the liquid inlet pipe 2. After the liquid oxygen enters the liquid inlet pipe 2, it flows into the spiral coil 8 and then evenly permeates into the interior of the flexible outer sleeve 1 through the oxygen permeation holes 9, where it is adsorbed into the combustible material 5. This structure makes the filling path of liquid oxygen in the flexible outer sleeve 1 longer, allowing for more thorough contact with the combustible material 5, further improving the uniformity and efficiency of filling and enhancing the fracturing effect. At the same time, the oxygen permeation holes 9 are set upwards, allowing the liquid oxygen to spread and fill from the bottom to the top. During this process, the gas inside the flexible outer sleeve 1 is discharged through the exhaust pipe 3, which helps the liquid oxygen to better fill all parts of the flexible outer sleeve 1, preventing liquid oxygen from accumulating at the bottom and further improving the uniformity and reliability of rock fracturing.

[0045] All standard parts used in this invention can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all use conventional models in the prior art, and the circuit connections also use conventional connection methods in the prior art, which will not be detailed here. Any content not described in detail in this specification belongs to the prior art known to those skilled in the art.

[0046] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified.

[0047] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0048] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0050] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0051] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A liquid oxygen gas fracturing device, characterized in that: include Flexible outer sleeve (1); The liquid inlet pipe (2) has one end passing through the flexible outer sleeve (1) and extending into the bottom of the flexible outer sleeve (1), and the other end is located outside the flexible outer sleeve (1); Exhaust pipe (3), one end of which passes through the flexible outer sleeve (1) and extends into the top of the flexible outer sleeve (1), and the other end is located outside the flexible outer sleeve (1); The liquid inlet pipe (2) located inside the flexible outer tube (1) has several oxygen leakage holes (4) on its side wall. Several combustible materials (5) are sleeved on the outside of the liquid inlet pipe (2). A resistance wire igniter (6) is fixedly connected to the side wall of the combustible material (5). A wire (7) is electrically connected to the end of the resistance wire igniter (6). The end of the wire (7) away from the resistance wire igniter (6) passes through the flexible outer tube (1) and connects to the ignition detonator.

2. The liquid oxygen gas fracturing device according to claim 1, characterized in that: Multiple oxygen leakage holes (4) are arranged at equal intervals along the length of the liquid inlet pipe (2).

3. The liquid oxygen gas fracturing device according to claim 2, characterized in that: The distance between adjacent oxygen leakage holes (4) is 20cm.

4. The liquid oxygen gas fracturing device according to claim 1, characterized in that: The combustible material (5) is composed of toilet paper rolls.

5. The liquid oxygen gas fracturing device according to claim 1, characterized in that: The flexible outer sleeve (1) is made of polyethylene.

6. The liquid oxygen gas fracturing device according to claim 1, characterized in that: It also includes a spiral coil (8) disposed at the bottom of the flexible outer sleeve (1). One end of the spiral coil (8) is connected to the outer wall of the tail end of the liquid inlet pipe (2). A plurality of oxygen permeation holes (9) are provided on the outer wall of the spiral coil (8), and the oxygen permeation holes (9) are arranged facing upward.

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