Inflation fracturing device in liquid oxygen hole

Abstract

The utility model belongs to the technical field of inflation fracturing equipment, and particularly relates to an inflation fracturing device in a liquid oxygen hole, which comprises an inflation pump and a sleeve joint shell fixedly arranged at the air outlet end of the inflation pump, the end part of the sleeve joint shell is communicated and connected with a connecting pipe, and the end part of the connecting pipe is provided with an inflation head. An anti-disengaging mechanism for preventing the inflation head from disengaging is connected between the sleeving shell and the inflation head. A sealing assembly is connected between the connecting pipe and the annular plate, and an anti-rotation structure is connected between the connecting pipe and the annular plate. The anti-falling mechanism comprises an annular plate fixedly connected to the periphery of the inflation head and a strip-shaped placement groove formed in the surface of the end of the sleeving shell, and the safety and stability of the device are effectively improved by designing the anti-falling mechanism and the anti-rotation structure; according to the anti-falling mechanism, by means of cooperation of a spring and a sliding sleeve block, firm fixation of the inflation head in the installation process is achieved, and the inflation head is prevented from falling off accidentally due to the action of external force.

Description

Technical Field

[0001] This utility model relates to the technical field of gas-filled fracturing equipment, and in particular to a liquid oxygen-filled fracturing device for in-hole gas filling. Background Technology

[0002] In the field of existing liquid oxygen in-hole fracturing devices, safety and stability have always been key concerns for users. Traditional devices often suffer from design flaws in the fixing methods of the inflation head and connecting parts, such as insufficient tightening force or structural instability, leading to the inflation head easily detaching or rotating during use. This instability not only directly threatens the safety of operators, increasing the risk of accidental injury, but may also lead to gas leakage, further exacerbating safety hazards. Furthermore, the relative rotation between the inflation head and the connecting parts can damage the overall structure of the device, reducing its fatigue resistance and service life, making it difficult for the device to maintain stable performance under prolonged or high-intensity working conditions.

[0003] Furthermore, in the use of liquid oxygen in-hole inflation fracturing devices, sealing and inflation efficiency are key factors affecting device performance. However, many existing devices often have shortcomings in the design of their connection parts, such as unreasonable sealing structures or poor sealing material performance, leading to easy gas leakage from the connection points during inflation. This leakage not only reduces inflation efficiency, preventing the device from reaching the expected inflation pressure in a short time, but the leaked gas may also pollute the surrounding environment, increasing environmental risks. In addition, poor sealing will accelerate the wear of the connection parts, shorten the service life of the device, and increase the user's maintenance costs. Therefore, we provide a liquid oxygen in-hole inflation fracturing device. Utility Model Content

[0004] To address the aforementioned problems, this invention proposes a liquid oxygen-filled gas-induced fracturing device, which more accurately solves the problems mentioned in the background art.

[0005] This utility model is achieved through the following technical solution:

[0006] The utility model proposes a liquid oxygen in-hole inflation and fracturing device, including an inflation pump and a sleeve shell fixedly installed at the air outlet of the inflation pump. A connecting pipe is connected through the end of the sleeve shell, and an inflation head is installed at the end of the connecting pipe. An anti-detachment mechanism is connected between the sleeve shell and the inflation head to prevent the inflation head from detaching. A sealing assembly is connected between the connecting pipe and the annular plate, and an anti-rotation structure is connected between the connecting pipe and the annular plate.

[0007] The anti-detachment mechanism includes an annular plate fixedly connected to the periphery of the inflation head and a strip-shaped placement groove opened on the end surface of the sleeve shell. A horizontal fixing rod is fixedly connected between the two end walls of the strip-shaped placement groove. A spring is sleeved around the periphery of the horizontal fixing rod. A sliding sleeve block is slidably sleeved around the periphery of the horizontal fixing rod, and the sliding sleeve block is slidably connected at the inner wall of the strip-shaped placement groove. A connecting rod is fixedly connected to the surface of the sliding sleeve block, and a limit shell is fixedly connected to the end of the connecting rod.

[0008] Furthermore, the anti-rotation structure includes a plug-in piece fixedly connected to the periphery of the annular plate and a U-shaped piece fixedly connected to the periphery of the connecting tube, with the plug-in piece inserted into the inner wall of the U-shaped piece.

[0009] Furthermore, the sealing assembly includes a sealing ring fixedly connected to the surface of the annular plate and a sealing slot formed on the end surface of the connecting pipe.

[0010] Furthermore, the sealing ring is inserted into the inner wall of the sealing slot, and the opening size of the sealing slot is compatible with the design size of the sealing ring.

[0011] Furthermore, the limiting shell is fitted around the periphery of the connecting tube, and its inner top wall is in contact with the surface of the annular plate to restrict the removal of the inflation head.

[0012] Furthermore, one end of the spring is fixedly connected to the end wall of the strip-shaped mounting groove, and the other end of the spring is fixedly connected to one end surface of the sliding sleeve block.

[0013] The beneficial effects of this utility model are:

[0014] This invention effectively improves the safety and stability of the device by designing an anti-detachment mechanism and an anti-rotation structure. The anti-detachment mechanism, through the cooperation of springs and sliding blocks, securely fixes the inflation head during installation, preventing it from accidentally falling off due to external forces, thus avoiding safety accidents caused by the inflation head falling off. At the same time, the anti-rotation structure, through the cooperation of plug-in pieces and U-shaped pieces, prevents relative rotation between the annular plate and the connecting pipe, ensuring the stability and reliability of the device during installation and use. This design not only improves the safety performance of the device but also extends its service life.

[0015] This invention effectively enhances the sealing performance and inflation efficiency of the device by designing a sealing component. The sealing component, through the cooperation of a sealing ring and a sealing slot, forms a tight airtight connection, preventing gas leakage during inflation and thus improving inflation efficiency. At the same time, the precise dimensional fit of the sealing component ensures the reliability and durability of the sealing effect, further extending the service life of the device. This design not only improves the inflation efficiency of the device but also reduces energy waste and environmental pollution caused by gas leakage. Attached Figure Description

[0016] Figure 1 This is a perspective view of one embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the inflation head after disassembly in one embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of an inflation head according to an embodiment of the present invention;

[0019] Figure 4 This is one embodiment of the present utility model. Figure 2 Enlarged view of the structure at point A in the middle.

[0020] In the diagram: 1. Air pump; 2. Sleeve housing; 3. Connecting pipe; 4. Inflation head; 5. Annular plate; 6. Strip placement groove; 7. Horizontal support rod; 8. Spring; 9. Sliding sleeve block; 10. Connecting rod; 11. Limiting shell; 12. Sealing ring; 13. Sealing slot; 14. Insertion piece; 15. U-shaped piece. Detailed Implementation

[0021] To more clearly and completely illustrate the technical solution of this utility model, the following description, in conjunction with the accompanying drawings, will further explain this utility model.

[0022] Example

[0023] like Figures 1-4 As shown in the figure, an embodiment of the present invention discloses a liquid oxygen in-hole inflation fracturing device, which mainly consists of an inflation pump 1 and a sleeve shell 2, wherein the sleeve shell 2 is fixedly installed at the air outlet end of the inflation pump 1. The end of the sleeve shell 2 is connected to the connecting pipe 3 through a through connection, and the end of the connecting pipe 3 is equipped with an inflation head 4. To ensure that the inflation head 4 will not accidentally detach during use, an anti-detachment mechanism is designed. This mechanism includes an annular plate 5 located around the inflation head 4 and a strip-shaped placement groove 6 opened on the end surface of the sleeve shell 2. A horizontal fixing rod 7 spans across the strip-shaped placement groove 6, and a spring 8 and a sliding sleeve 9 are sleeved on the horizontal fixing rod 7. The sliding sleeve 9 can slide within the strip-shaped placement groove 6. The sliding sleeve 9 is connected to a limiting shell 11 through a connecting rod 10. When the inflation head 4 is installed in place, the spring 8 pushes the sliding sleeve 9 and the limiting shell 11 to move along the horizontal fixing rod 7 until the limiting shell 11 is locked around the connecting pipe 3 to prevent the inflation head 4 from falling off.

[0024] Furthermore, the anti-rotation structure is designed to prevent relative rotation between the annular plate 5 and the connecting tube 3. Specifically, a plug-in piece 14 is fixed to the periphery of the annular plate 5, while a U-shaped piece 15 is fixed to the periphery of the connecting tube 3. The plug-in piece 14 is inserted into the U-shaped piece 15, so that even under external force, the annular plate 5 cannot rotate relative to the connecting tube 3; this structure effectively prevents the inflation head 4 from rotating during installation, ensuring the stability and reliability of the device.

[0025] Furthermore, the sealing assembly is designed to ensure airtightness between the connecting pipe 3 and the annular plate 5. A sealing ring 12 is fixed to the surface of the annular plate 5, while a sealing slot 13 is provided at the end of the connecting pipe 3. When the annular plate 5 mates with the connecting pipe 3, the sealing ring 12 inserts into the sealing slot 13, forming a tight, airtight connection. The design dimensions of the sealing ring 12 and the opening dimensions of the sealing slot 13 are mutually compatible. This means that the sealing ring 12 can be perfectly inserted into the sealing slot 13, forming a seamless connection, thereby further improving airtightness.

[0026] Furthermore, the limiting shell 11 is designed to further secure the inflation head 4 and prevent it from being pulled out. The limiting shell 11 is fitted around the connecting tube 3, and its inner top wall is in contact with the surface of the annular plate 5. When the inflation head 4 is installed in place, the limiting shell 11 is tightly locked into the connecting tube 3 under the action of the spring 8, ensuring that the inflation head 4 will not accidentally fall off.

[0027] Furthermore, one end of the spring 8 is fixedly connected to the end wall of the strip-shaped mounting groove 6, and the other end is fixedly connected to one end surface of the sliding sleeve 9. When the inflation head 4 is installed or removed, the spring 8 provides the necessary elastic force to push the sliding sleeve 9 and the connected limiting shell 11 to move along the horizontal fixing rod 7. This design makes the installation and removal process of the inflation head 4 smoother and more reliable.

[0028] Finally, it should be noted that the basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this specification. Although not explicitly stated here, those skilled in the art may make various modifications, improvements, and corrections to this specification. Such modifications, improvements, and corrections are suggested in this specification, and therefore, such modifications, improvements, and corrections still fall within the spirit and scope of the exemplary embodiments of this specification. Furthermore, this specification uses specific terms to describe embodiments of this specification. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a feature, structure, or characteristic associated with at least one embodiment of this specification. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this specification can be appropriately combined. Moreover, unless expressly stated in the claims, the order of processing elements and sequences, the use of numbers and letters, or other names described in this specification are not intended to limit the order of the processes and methods of this specification.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A liquid oxygen in-hole gas-filled fracturing device, comprising a gas pump (1) and a sleeve shell (2) fixedly installed at the gas outlet end of the gas pump (1), characterized in that, The end of the sleeve shell (2) is connected to a connecting pipe (3), and an inflation head (4) is installed at the end of the connecting pipe (3). An anti-detachment mechanism is connected between the sleeve shell (2) and the inflation head (4) to prevent the inflation head (4) from detaching. A sealing assembly is connected between the connecting pipe (3) and the annular plate (5), and an anti-rotation structure is connected between the connecting pipe (3) and the annular plate (5). The anti-detachment mechanism includes an annular plate (5) fixedly connected to the periphery of the inflation head (4) and a strip-shaped placement groove (6) opened on the end surface of the sleeve shell (2). A horizontal fixing rod (7) is fixedly connected between the two end walls of the strip-shaped placement groove (6). A spring (8) is sleeved around the periphery of the horizontal fixing rod (7). A sliding sleeve block (9) is slidably sleeved around the periphery of the horizontal fixing rod (7), and the sliding sleeve block (9) is slidably connected at the inner wall of the strip-shaped placement groove (6). A connecting rod (10) is fixedly connected to the surface of the sliding sleeve block (9), and a limit shell (11) is fixedly connected to the end of the connecting rod (10).

2. The liquid oxygen in-hole gas-filled fracturing device according to claim 1, characterized in that, The anti-rotation structure includes a plug-in piece (14) fixedly connected to the periphery of the annular plate (5) and a U-shaped piece (15) fixedly connected to the periphery of the connecting pipe (3), with the plug-in piece (14) inserted into the inner wall of the U-shaped piece (15).

3. The liquid oxygen in-hole gas-filled fracturing device according to claim 1, characterized in that, The sealing assembly includes a sealing ring (12) fixedly connected to the surface of the annular plate (5) and a sealing slot (13) opened on the end surface of the connecting pipe (3).

4. The liquid oxygen in-hole gas-filled fracturing device according to claim 3, characterized in that, The sealing ring (12) is inserted into the inner wall of the sealing slot (13), and the opening size of the sealing slot (13) is compatible with the design size of the sealing ring (12).

5. The liquid oxygen in-hole gas-filled fracturing device according to claim 1, characterized in that, The limiting shell (11) is fitted around the connecting tube (3), and its inner top wall is in contact with the surface of the annular plate (5) to restrict the removal of the inflation head (4).

6. The liquid oxygen in-hole gas-filled fracturing device according to claim 1, characterized in that, One end of the spring (8) is fixedly connected to the end wall of the strip groove (6), and the other end of the spring (8) is fixedly connected to one end surface of the sliding sleeve (9).

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