Disposable gas filling fracturing device

Abstract

The utility model discloses a disposable gas filling cracking device which is characterized by comprising a sleeve with an opening at one end, a cracking component is arranged in the sleeve, cracking media are filled in the sleeve, the sleeve is sealed after being filled with the cracking component, the cracking component comprises a liquid filling pipe, liquid absorbing media and at least one ignition mechanism, and the liquid absorbing media are filled in the liquid filling pipe. The liquid filling pipe is connected in series with a plurality of liquid absorption media in the axial direction, a plurality of liquid conveying holes are formed in the liquid filling pipe in the axial direction, the fracturing media enter from the liquid filling pipe and flow out from the liquid conveying holes in the liquid filling pipe and the bottom end of the liquid filling pipe, one part of the fracturing media are filled into the liquid absorption media, and the other part of the fracturing media are filled into the sleeve. An exhaust pipe is further arranged in the sleeve, and the liquid filling pipe and the exhaust pipe both extend out of the top end of the sleeve. Through the arrangement of the technical scheme, sufficient liquid absorption of the liquid absorption medium is achieved, the filling efficiency of the fracturing medium can be improved, and the liquid absorption medium can achieve the energy conversion effect more rapidly and sufficiently under triggering of the ignition mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of expansion fracturing, in particular to a disposable gas filling fracturing device. Background Art

[0002] In the mining industry, geological exploration, cement, steel, electricity and other industries, subways, tunnels and municipal engineering, underwater engineering, and emergency rescue, if the commonly used construction methods and mechanical equipment are used, the speed will be slow, the noise will be loud, the efficiency will be low, the cost will be high, the risk will be high, and the construction progress will be seriously affected.

[0003] For similar engineering situations, gas blasting technology is used. Holes are drilled in places where there are rocks through a rock drill, and finally the fracturing tube equipment is placed in the rock mass that needs to be blasted, so that the easily vaporized liquid or solid material filled in the fracturing tube is vaporized and expanded to produce high-pressure gas. The huge pressure generated is used to crush the rock, so that the hard rock is divided into fragments. This fracturing equipment has the characteristics of simple production, safety, environmental protection, and low cost.

[0004] A portable gas expansion rock breaking device was disclosed in a Chinese patent document on May 30, 2023, with the publication number CN219890293U. The gas expansion rock breaking device in this scheme includes an anti-static PVC plastic tube, with an upper sealing cover and a lower sealing cover at both ends of the anti-static PVC plastic tube, and the upper sealing cover is provided with a female connector of a quick-connect connector, which passes through the upper sealing cover and is connected to the liquid inlet pipe in the anti-static PVC plastic tube. The female connector is used in conjunction with the male connector provided in the liquid oxygen supply equipment. A pressure relief valve and an ignition fuse are also provided on the upper sealing cover, and the ignition fuse passes through the upper sealing cover and extends to the inside of the anti-static PVC plastic tube. The device has the characteristics of instant charging and breaking, easy transportation and storage, and high safety in on-site operation.

[0005] In the prior art "CN108278937A one-time expansion tube for fracturing and its fracturing method", the expansion tube has a simple structure, with a first plug and a second plug provided at both ends of the outer shell, a gas generator, a gas generator and a trigger device provided inside the outer shell, and wires passing through both ends of the gas generator connected to both ends of the trigger device; in "CN117450860A a fracturing tube", oxygen is filled into the closed membrane cavity to assist combustion of the combustion core, thereby heating the liquid nitrogen or liquid carbon dioxide outside the closed membrane cavity, causing a phase change to cause the fracturing tube to explode.

[0006] The problems existing in the current fracturing pipe equipment are as follows: the equipment structure is relatively complex, the two ends of the liquid inlet pipe are connected and extend to the bottom of the tube, the liquid inlet pipe is connected to the liquid oxygen filling machine, and liquid oxygen is filled into the plastic tube. The liquid oxygen is gradually filled from the bottom of the tube and is triggered by the ignition fuse extending from the upper end of the tube to the inside. When the liquid oxygen is filled, it is immersed in the liquid absorption layer from bottom to top and from outside to inside. This results in that in actual use, not only the filling speed of liquid oxygen is slow, but also the infiltration and absorption effect of the liquid absorption layer is poor, and the liquid oxygen is difficult to be quickly and effectively absorbed by the liquid absorption layer, which affects the rock and soil fracturing operation. Summary of the invention

[0007] In view of the shortcomings of the above-mentioned prior art, such as poor liquid absorption effect of the liquid absorption layer and slow liquid oxygen filling, the utility model provides a disposable gas filling fracturing device. Through the arrangement of the technical solution, sufficient liquid absorption of the liquid absorption medium is achieved, which is conducive to improving the filling efficiency of the fracturing medium and the liquid absorption medium can achieve the energy conversion effect more quickly and fully under the triggering of the ignition mechanism.

[0008] In order to solve the above technical problems, the utility model adopts the following technical solutions: a disposable gas-filled fracturing device, comprising a sleeve with an opening at one end, a fracturing component and a fracturing medium are arranged in the sleeve, the sleeve is sealed after the fracturing component is filled, the fracturing component comprises a liquid filling tube, a liquid absorbing medium and at least one ignition mechanism, the liquid filling tube is connected in series with a plurality of liquid absorbing media along the axial direction, and the liquid filling tube is provided with a plurality of liquid infusion holes along the axial direction, the fracturing medium enters through the liquid filling tube, flows out through the liquid infusion holes on the liquid filling tube and the bottom end of the liquid filling tube, a part of the fracturing medium is filled into the liquid absorbing medium, and another part of the fracturing medium is filled into the sleeve, an exhaust pipe is also arranged in the sleeve, and both the liquid filling tube and the exhaust pipe extend out of the top end of the sleeve.

[0009] Furthermore, 1 to 7 fracturing assemblies are arranged in the sleeve, and the filling pipes in each fracturing assembly are interconnected and connected to a liquefied gas filling machine.

[0010] Furthermore, the sleeve has a partition arranged in the axial length direction, and the partition divides the sleeve into at least two chambers for loading the fracturing assembly.

[0011] Furthermore, the inner wall of the liquid absorbing medium is in clamping contact with the liquid filling tube, and the ignition mechanism is clamped between the liquid filling tube and the liquid absorbing medium, so that the ignition mechanism contacts the inner surface of the liquid absorbing medium.

[0012] Furthermore, a plurality of ignition mechanisms are provided along the top end to the bottom end of the liquid filling tube, the number of the ignition mechanisms is provided corresponding to the number of the infusion holes, and the ignition mechanisms are connected in series via wires.

[0013] Furthermore, the bottom end of the liquid-filling tube is bent and extends to the outer side of the liquid-absorbing medium to form a barb portion.

[0014] Furthermore, the liquid-filled tube is a metal alloy tube or a composite hose.

[0015] Furthermore, the liquid absorbing medium is flammable paper, cotton, carbon or aluminum fiber.

[0016] Furthermore, the ignition mechanism and / or the exhaust pipe are fixed on the liquid absorbing medium.

[0017] Furthermore, the liquid fracturing medium is liquid oxygen and liquid nitrogen, liquid hydrogen or liquid carbon dioxide.

[0018] In summary, the utility model has the following beneficial effects:

[0019] (1) Infusion holes are arranged at intervals on the filling tube. When the fracturing medium is filled into the sleeve, the absorption medium can be more evenly and efficiently infiltrated through the infusion holes more quickly, so that the fracturing medium is better absorbed and filled into the sleeve and fully absorbed by the absorption medium, which is beneficial to improving the filling efficiency of the fracturing medium and achieving the effect of energy conversion more quickly and fully when the absorption medium is triggered by the ignition mechanism.

[0020] (2) When fracturing rock and soil in urban construction, open-pit mining, mine excavation, etc., it is necessary to drill holes with a down-the-hole drill or a hydraulic rock drill according to the on-site conditions, and consider the model (i.e., classification according to kilograms), diameter, length, hole depth and hole diameter of the disposable gas-filled fracturing device to be suitable for the kilograms of the fracturing device. Therefore, fracturing devices of different diameters and lengths are required, and the end of the sleeve has an opening, and the length of the sleeve can be cut to control the length of the fracturing device, and the openings at both ends are sealed by the seal to form a sealed chamber inside the sleeve; at the same time, two fracturing components can be set when there is a partition in the sleeve, so as to facilitate the control of the diameter of the fracturing device; by setting the number of fracturing components according to the diameter of the sleeve, the diameter of the fracturing device can be controlled without changing the single liquid absorption medium, so that the device has better applicability.

[0021] (3) When an aluminum tube is selected as the filling tube, since the liquid-absorbing medium and the filling tube are not fixedly connected in series, and the two adjacent liquid-absorbing media are also not connected, the bottom of the filling tube is set to be in a barb shape to avoid the risk of the bottom of the metal filling tube puncturing the bottom of the sleeve. At the same time, it can also prevent the filling tube from being pulled out of the sleeve when the filling tube is filled, used, transported, etc., so as to achieve a better fixing effect.

[0022] (4) First, the expanding gas is oxygen, which does not require traditional heating equipment and has less pollution. On the other hand, an exhaust pipe is provided, and the exhaust pipe is fixed to the liquid absorption medium. The exhaust pipe is used to discharge excess oxygen. If the explosion is not successful, it is only necessary to wait for the high-purity oxygen to dissipate from the pressure discharge port. It is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of a disposable gas filling fracturing device.

[0024] Figure 2 This is an internal cross-sectional view of a disposable gas-filled fracturing device.

[0025] Figure 3 It is a schematic diagram of the sleeve structure with a partition.

[0026] Figure 4 Schematic diagram of a cross section with a partition.

[0027] Figure 5 The schematic diagram of the structure of the fracturing device is that seven fracturing components are arranged in the sleeve.

[0028] The accompanying drawings are described as follows:

[0029] 1. Sleeve; 11. Interlayer; 12. Chamber; 2. Fracturing assembly; 21. Liquid filling tube; 211. Liquid infusion hole; 212. Barb portion; 22. Liquid absorbing medium; 23. Ignition mechanism; 3. Exhaust pipe. DETAILED DESCRIPTION

[0030] The utility model is further described in detail below in conjunction with the embodiments.

[0031] Embodiment 1:

[0032] When implementing it, Figure 1 and Figure 2 As shown, a disposable gas-filled fracturing device comprises a sleeve 1 with an opening at one end, wherein a fracturing assembly 2 and a fracturing medium are arranged in the sleeve 1, and the sleeve 1 is sealed after the fracturing assembly 2 is filled, wherein the fracturing assembly 2 comprises a liquid filling tube 21, a liquid absorbing medium 22 and at least one ignition mechanism 23, wherein the liquid filling tube 21 is connected in series with a plurality of liquid absorbing mediums 22 along the axial direction, and the liquid filling tube 21 is provided with a plurality of liquid infusion holes 211 along the axial direction, wherein the fracturing medium enters through the liquid filling tube 21, and flows out through the liquid infusion holes on the liquid filling tube 21 and the bottom end of the liquid filling tube 21, wherein a part of the fracturing medium is filled into the liquid absorbing medium 22, and another part of the fracturing medium is filled into the sleeve 1, and the filling amount of the fracturing medium in the liquid absorbing medium 22 and the sleeve 1 is adjusted according to actual conditions (such as: the specific type of the fracturing medium, the size of the device, etc.), wherein an exhaust pipe 3 is further arranged in the sleeve 1, and both the liquid filling tube 21 and the exhaust pipe 3 extend out of the top end of the sleeve 1.

[0033] The ignition mechanism 23 is used to ignite the liquid absorption medium 22 and the fracturing medium to cause the device to expand. No traditional heating device is required, and there is less pollution. On the other hand, an exhaust pipe 3 is provided, and the exhaust pipe 3 is fixed to the liquid absorption medium 22. Excess gas is discharged by the exhaust pipe 3. The excess gas here refers to the air in the sleeve 1 before filling when the fracturing medium is gradually filled into the sleeve, and the excess fracturing medium after the maximum amount of fracturing medium carried by the sleeve 1 is discharged after it is fully filled, or the excess gas after the fracturing medium is gasified and discharged from the exhaust pipe after the maximum volume of the sleeve. If the explosion is not successful, it is only necessary to wait for high-purity gas. The high-purity gas here refers to the gas formed after the fracturing medium is gasified, which can be dispersed from the pressure discharge port, which is safe and reliable. Infusion holes 211 are arranged at intervals on the filling tube 21. When the fracturing medium is filled into the sleeve 1, the liquid absorbing medium 22 can be more evenly and efficiently infiltrated more quickly through the infusion holes 211, so that the fracturing medium is better absorbed and filled into the sleeve 1 and is fully absorbed by the liquid absorbing medium 22, which is beneficial to improving the filling efficiency of the fracturing medium and enabling the liquid absorbing medium 22 to achieve the energy conversion effect more quickly and fully under the triggering of the ignition mechanism 23.

[0034] For example, the construction area contains a lot of hard rock in the sinking operation. If it is handled by common construction methods and mechanical equipment, the speed is slow, the noise is loud, the efficiency is low, the cost is high, the risk is high, and the construction progress is seriously affected. In this case, the rock drill is used to drill holes in the rock area, and finally the one-time hole filling fracture pipe equipment is placed in the rock body that needs to be blasted, and the huge pressure generated by the expansion is used to break the rock, so that the hard rock is divided into fragments.

[0035] Embodiment 2:

[0036] like Figure 1 , Figure 2 ,and Figure 5 As shown, the disposable gas-filled fracturing device comprises a sleeve 1 with an opening at one end, a fracturing assembly 2 is arranged in the sleeve 1, and the fracturing assembly 2 comprises a liquid filling tube 21, a liquid absorbing medium 22 and at least one ignition mechanism 23, and an exhaust pipe 3 is also arranged in the sleeve 1.

[0037] In this embodiment, 1 to 7 fracturing components 2 are arranged in the sleeve 1, and the top ends of the filling pipes 21 in the fracturing components 2 are interconnected and connected to the liquefied gas filling machine.

[0038] The depth of the hole can be determined according to the thickness of the rock, the hardness of the rock, and the blasting volume requirements. A standard diameter of 80mm-120mm fracturing device can be selected, and the filling weight is 5-6kg. The specific diameter of the fracturing device is related to the diameter of the sleeve 1 and the diameter of the liquid absorbing medium 22, and the specific situation often needs to be handled according to the needs of the site. The usual expansion depth is generally not more than 20m. According to the diameter of the sleeve 1, 1-7 fracturing components 2 are set in the sleeve 1. The liquid absorbing medium 22 in these fracturing components 2 is respectively penetrated with a filling pipe 21. The top of the filling pipe 21 can extend out of the outer end of the sleeve 1, or can be connected at the top through a pipe connector. For example, seven filling pipes 21 are connected by an eight-way connection. At the same time, one or more exhaust pipes 3 are set at the top of the sleeve 1, preferably one exhaust pipe, so that the amount of exhaust pipe 3 can be reduced, and it is also beneficial to the sealing treatment of the top of the sleeve 1, and the exhaust pipe 3 is fixed on the liquid absorbing medium 22. The top ends of the filling tubes 21 are bent and connected through connecting pipes, including six-way joints, seven-way joints or eight-way joints, and then connected to the delivery pipe and connected to the liquefied gas filling machine. The liquefied gas filling machine fills the fracturing medium in the liquid cylinder or Dewar tank into the sleeve 1.

[0039] Embodiment 3:

[0040] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the disposable gas-filled fracturing device comprises a sleeve 1 with openings at both ends, a fracturing assembly 2 is arranged in the sleeve 1, and the fracturing assembly 2 comprises a liquid filling tube 21, a liquid absorbing medium 22 and at least one ignition mechanism 23, and an exhaust pipe 3 is also arranged in the sleeve 1.

[0041] In this embodiment, the sleeve 1 has a partition 11 arranged along the axial length direction of the sleeve, and the partition 11 divides the sleeve 1 into at least two chambers 12 for loading the fracturing assembly 2.

[0042] When drilling with a down-the-hole drill or a hydraulic rock drill, the hole depth and hole diameter are matched with the kilograms of the fracturing device according to the model, diameter and length of the disposable gas-filled fracturing device, so fracturing devices of different diameters and lengths are required, and one end of the sleeve 1 has an opening, and the length of the sleeve 1 can be cut to control the length of the fracturing device, and the opening at one end or both ends is sealed by a seal, so that a sealed chamber 12 is formed inside the sleeve 1; at the same time, a layer of interlayer 11 in the length direction is provided in the sleeve 1, and two fracturing components 2 can be set, so as to facilitate the control of the diameter of the fracturing device, replace the fracturing device bundled with a single fracturing component 2, have a better fracturing effect, and thus make the device have better applicability.

[0043] Embodiment 4:

[0044] The disposable gas-filled fracturing device comprises a sleeve 1 with openings at both ends. A fracturing assembly 2 is arranged in the sleeve 1. The fracturing assembly 2 comprises a liquid filling tube 21, a liquid absorbing medium 22 and at least one ignition mechanism 23. An exhaust pipe 3 is also arranged in the sleeve 1.

[0045] In this embodiment, the inner circumferential surface of the liquid absorbing medium 22 contacts the liquid filling tube 21, and the ignition mechanism 23 is clamped between the liquid filling tube 21 and the liquid absorbing medium 22, so that the ignition mechanism 23 contacts the liquid absorbing medium 22. In addition, a plurality of ignition mechanisms 23 are arranged from the top to the bottom of the liquid filling tube 21, and the number of the ignition mechanisms 23 corresponds to the number of the infusion holes 211, and the ignition mechanisms 23 are connected in series by wires.

[0046] The liquid absorbing medium 22 is passed through the liquid filling tube 21, and the inner wall of the liquid absorbing medium 22 contacts the outer wall of the liquid filling tube 21. The liquid infusion hole 211 is drilled on the liquid filling tube 21. When liquid oxygen or other liquid gas is filled, the liquid absorbing medium 22 is gradually infiltrated from the inside to the outside through the liquid infusion hole 211, and the liquid oxygen is gradually filled into the sleeve 11 from top to bottom. The ignition mechanism 23 includes an electric ignition head. The ignition mechanism 23 is connected to the detonator after being connected in series with each other through a wire, and the detonator controls the explosion of the ignition head.

[0047] In the above embodiment, the bottom end of the liquid filling tube 21 is bent and extended to the outer side of the liquid absorbing medium 22 to form a barb portion 212. The liquid filling tube 21 is a metal alloy tube or a composite hose. Preferably, the liquid filling tube 21 is an aluminum tube, which has good flexibility and is convenient for processing the infusion hole 211 and bending.

[0048] In the above embodiment, the liquid absorbing medium 22 is flammable paper, cotton, carbon or aluminum fiber. Preferably, the liquid absorbing medium 22 is paper, which has a low cost and is convenient for inserting the paper tube into the liquid filling tube 21.

[0049] In a specific implementation, the ignition mechanism 23 and / or the exhaust pipe 3 are fixed on the liquid absorbing medium 22. In this way, since the fracturing device needs to be buried under the hole to a certain depth, and a reserved space is reserved for burying the hole and the fracturing device, the filling pipe 21 and the exhaust pipe 3 need to extend out of the sleeve 1 for a certain length. In order to fix the exhaust pipe 3 more firmly and prevent it from falling, it can be tied with an adhesive tape. Since multiple ignition mechanisms 23 are connected by wires, the ignition mechanism 23 can be fixed with an adhesive tape to avoid displacement, and at the same time, the ignition head of the ignition mechanism 23 can be prevented from being exposed to the outside of the liquid absorbing medium 22.

[0050] In the specific implementation of the above embodiment, the liquid fracturing medium is liquid oxygen and liquid nitrogen, liquid hydrogen or liquid carbon dioxide. Preferably, the liquid fracturing medium is liquid oxygen. Liquid oxygen gas can be transformed into liquid under a certain high pressure. The liquid oxygen is transported into the sleeve 1. When the liquid oxygen is heated and gasified, it expands and quickly releases high-pressure gas to break the rock. The expansion fracturing of the once-in-one hole filled with liquid oxygen will not cause vibration cracking of the bottom rock layer.

[0051] The working principle and process of this device:

[0052] First, locate the gas expansion position, wait for drilling and check whether the gas expansion hole is qualified, put the fracturing device into the blasthole, and block the landfill space between the fracturing device and the top of the blasthole. After the landfill soil is compacted, use a liquid filling machine to fill the fracturing medium such as liquid oxygen into the sleeve 1, and then connect the wire of the ignition mechanism 23 to the detonator and ignite it, so that the liquid absorption medium 22 burns. Under the combustion assistance of oxygen, the liquid absorption medium 22 burns violently, the hot spot spreads rapidly, the gas volume expands instantly, and high pressure is generated in the blasthole. The high-pressure gas acts on the blasthole wall, generates tensile stress in the rock mass, and generates a large number of cracks on the hole wall. Then, the gas enters the crack to generate a "gas wedge" effect, which further breaks the rock mass. Finally, under the action of residual gas, the broken rock moves forward to form a bulge; then, with the rupture of the bulge, the gas pressure drops to zero, and the rock loses the kinetic energy of flying and falls to the ground, so the broken stone does not fly far. When the fracturing medium is liquid carbon dioxide, the volume of carbon dioxide expands rapidly when it absorbs heat and vaporizes, generating high pressure, causing the rock mass to break or crack. Carbon dioxide exists in liquid form when the temperature is below 31°C or the pressure is greater than 7.23MPa, and begins to vaporize when it exceeds 31°C, and the pressure changes continuously with the change of temperature. Taking advantage of this characteristic of carbon dioxide, liquid carbon dioxide is filled in the main pipe of the blaster, and the initiator is used to quickly stimulate the combustion of the liquid absorbing medium 22. The liquid carbon dioxide instantly vaporizes and contracts and generates high pressure, which acts on the rock mass, thereby achieving the purpose of blasting. Liquid nitrogen can also vaporize and expand to generate high pressure.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A disposable gas-filled fracturing device, characterized in that: The invention comprises a sleeve (1) having an opening at one end, wherein a fracturing component (2) and a fracturing medium are arranged in the sleeve (1), and the sleeve (1) is sealed after the fracturing component (2) is filled, wherein the fracturing component (2) comprises a liquid filling tube (21), a liquid absorbing medium (22) and at least one ignition mechanism (23), wherein the liquid filling tube (21) is connected in series with a plurality of liquid absorbing media (22) along the axial direction, and the liquid filling tube (21) is provided with a plurality of liquid infusion holes (211) along the axial direction, wherein the fracturing medium enters through the liquid filling tube (21) and flows out through the liquid infusion holes (211) on the liquid filling tube (21) and the bottom end of the liquid filling tube (21), wherein a part of the fracturing medium is filled into the liquid absorbing medium (22), and another part of the fracturing medium is filled into the sleeve (1), and an exhaust pipe (3) is also arranged in the sleeve (1), wherein both the liquid filling tube (21) and the exhaust pipe (3) extend out of the top end of the sleeve (1).

2. The disposable gas-filled fracturing device according to claim 1, characterized in that: One to seven fracturing assemblies (2) are arranged in the sleeve (1), and the liquid filling pipes (21) in the fracturing assemblies (2) are interconnected and connected to a liquefied gas filling machine.

3. The disposable gas-filled fracturing device according to claim 1, characterized in that: The sleeve (1) has a partition (11) arranged in the axial length direction, and the partition (11) divides the sleeve (1) into at least two chambers (12) for loading the fracturing assembly (2).

4. The disposable gas-filled fracturing device according to any one of claims 1 to 3, characterized in that: The inner wall of the liquid absorbing medium (22) is in clamping contact with the liquid filling tube (21), and the ignition mechanism (23) is clamped between the liquid filling tube (21) and the liquid absorbing medium (22), so that the ignition mechanism (23) contacts the inner surface of the liquid absorbing medium (22).

5. The disposable gas-filled fracturing device according to claim 4, characterized in that: A plurality of the ignition mechanisms (23) are arranged along the top end to the bottom end of the liquid filling tube (21), the number of the ignition mechanisms (23) being arranged corresponding to the number of the liquid infusion holes (211), and the ignition mechanisms (23) are connected in series via wires.

6. The disposable gas-filled fracturing device according to claim 4, characterized in that: The bottom end of the liquid filling tube (21) is bent and extends to the outer side surface of the liquid absorbing medium (22) to form a barb portion (212).

7. The disposable gas-filled fracturing device according to any one of claims 1 to 3, characterized in that: The liquid filling tube (21) is a metal alloy tube or a composite hose.

8. The disposable gas-filled fracturing device according to any one of claims 1 to 3, characterized in that: The liquid absorbing medium (22) is flammable paper, cotton, carbon or aluminum fiber.

9. The disposable gas-filled fracturing device according to any one of claims 1 to 3, characterized in that: The ignition mechanism (23) and / or the exhaust pipe (3) are fixed on the liquid absorbing medium (22).

10. The disposable gas-filled fracturing device according to any one of claims 1 to 3, characterized in that: The fracturing medium is liquid oxygen, liquid nitrogen, liquid hydrogen or liquid carbon dioxide.

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