High-stability low-temperature oilfield associated gas recovery device

Abstract

The utility model discloses a low-temperature oilfield associated gas recovery device with good stability, and relates to the technical field of oilfield associated gas recovery equipment, the low-temperature oilfield associated gas recovery device comprises a recovery box body and a gas inlet and outlet pipe which is installed at the periphery of the recovery box body in a penetrating manner, the end part of the gas inlet and outlet pipe is butted with an external pipe, and the interiors of the gas inlet and outlet pipe and the external pipe are connected with a touch connection structure; according to the oil field associated gas recovery device, through the design of a touch connection structure and a mounting and dismounting mechanism, the oil field associated gas recovery device can effectively prevent the associated gas from leaking in the butt joint process; a piston column and a reset part in the touch connection structure can ensure accurate reset of the piston column after butt joint is completed, so that smooth circulation of gas is ensured; meanwhile, due to the design of parts such as an inserting rod, an arc-shaped plate and a limiting blocking piece in the mounting and dismounting mechanism, the connecting stability between the air inlet and outlet pipe and the external pipe is enhanced, and the air inlet and outlet pipe and the external pipe are prevented from being separated in the working process.

Description

Technical Field

[0001] This utility model relates to the technical field of associated gas recovery equipment for oil fields, and in particular to a low-temperature associated gas recovery device with good stability. Background Technology

[0002] In the oil extraction process, the recovery and utilization of associated gas from oilfields is of great significance for improving resource utilization and reducing environmental pollution. However, traditional associated gas recovery devices often suffer from insufficient stability and sealing during the docking process. Due to unreasonable design of the docking components or inappropriate material selection, gas leakage is prone to occur during docking, which not only affects recovery efficiency but may also cause environmental pollution. In addition, during long-term use, traditional devices are prone to loosening or deformation of the docking components due to factors such as vibration and temperature changes, further exacerbating the risk of gas leakage.

[0003] Furthermore, the installation and disassembly of external pipelines in traditional associated gas recovery systems are often cumbersome. Due to the complex structure of the connecting components, specialized tools or equipment are required, increasing both the user's operational difficulty and cost, and reducing work efficiency. In addition, the cumbersome installation and disassembly process can damage or deform the connecting components, further affecting the performance and lifespan of the recovery system. Therefore, we provide a stable cryogenic associated gas recovery system for oilfields. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a stable low-temperature associated gas recovery device for oil fields, solving the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-temperature associated gas recovery device with good stability, comprising: a recovery tank and an inlet / outlet pipe installed around the periphery of the recovery tank, wherein an outer connecting pipe is connected to the end of the inlet / outlet pipe, and the inlet / outlet pipe and the outer connecting pipe are internally connected by a contact structure to prevent leakage of associated gas from the inlet / outlet pipe when connected to the outer connecting pipe; and a disassembly / removal mechanism is connected between the inlet / outlet pipe and the outer connecting pipe.

[0006] The contact structure includes a hollow disc fixedly installed on the inner wall of the inlet and outlet pipes and a cross fixedly installed on the inner wall of the outer pipe. A push contact rod is fixedly connected to the center of the surface of the cross relative to the end of the inlet and outlet pipes. A piston rod is piston-connected to the inner wall of the hollow disc. A reset component is connected between the inlet and outlet pipes and the piston rod.

[0007] The installation and dismantling mechanism includes a ring plate 1 fixedly connected to the periphery of the inlet and outlet pipe ends and a ring plate 2 fixedly connected to the periphery of the outer pipe end.

[0008] As a further technical solution of this utility model, the installation and dismantling mechanism also includes a rectangular groove formed on the surface of the annular plate. A plug-in rod is inserted into the end wall of the rectangular groove. One end of the plug-in rod is fixedly connected to a limiting plate. A second spring is sleeved around the plug-in rod. An arc-shaped plate is fixedly connected to the other end of the plug-in rod, and the arc-shaped plate is sleeved around the annular plate. A limiting baffle is fixedly connected to the end of the arc-shaped plate to limit the separation of the second annular plate from the first annular plate.

[0009] As a further technical solution of this utility model, the resetting component includes a strip-shaped placement groove horizontally opened on the inner wall of the inlet and outlet air pipes. A horizontal fixing rod is fixedly connected between the two end walls of the strip-shaped placement groove. A spring is sleeved around the horizontal fixing rod. A sliding sleeve block is slidably sleeved around the horizontal fixing rod. The sliding sleeve block is slidably connected to the inner wall of the strip-shaped placement groove, and the opposite surfaces of the two sliding sleeve blocks are fixedly connected to the end of the connecting rod.

[0010] As a further technical solution of this utility model, a sealing element is connected between the first annular plate and the second annular plate;

[0011] The sealing element includes a sealing slot formed on one surface of the annular plate and a sealing ring fixedly connected to a second surface of the annular plate, with the sealing ring inserted into the inner wall of the sealing slot.

[0012] As a further technical solution of this utility model, the surface of the first annular plate is provided with a through hole, and the surface of the second annular plate is fixedly connected with a plug post, which is inserted into the inner wall of the through hole to limit the instability caused by the relative rotation of the first annular plate and the second annular plate.

[0013] As a further technical solution of this utility model, one end of the second spring is fixedly connected to the end wall of the rectangular groove, and the other end of the second spring is fixedly connected to the surface of the limiting plate.

[0014] As a further technical solution of this utility model, 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.

[0015] This invention provides a low-temperature associated gas recovery device with good stability, which has the following advantages compared with the prior art:

[0016] 1. This design presents a stable cryogenic associated gas recovery device for oilfields. Through the design of the contact structure and the installation / dismantling mechanism, the associated gas recovery device can effectively prevent leakage of associated gas during the docking process. The piston rod and reset component in the contact structure ensure accurate reset of the piston rod after docking, thereby guaranteeing smooth gas flow. At the same time, the design of components such as the plug rod, arc plate, and limit baffle in the installation / dismantling mechanism enhances the connection stability between the inlet / outlet gas pipes and the external pipe, preventing them from separating during operation. In addition, the design of the sealing component further improves the sealing performance between the first annular plate and the second annular plate, effectively preventing gas leakage between them.

[0017] 2. This design presents a stable cryogenic associated gas recovery device for oilfields. By incorporating an installation and dismantling mechanism, it not only enhances the connection stability between the inlet / outlet gas pipes and the external pipes but also facilitates the installation and dismantling of the external pipes. Through the ingenious design of components such as the plug rod, arc plate, and limit baffle, users can easily connect and disconnect the external pipes from the recovery device without the need for complex operating tools or procedures. This design improves the flexibility and practicality of the device, allowing users to easily replace or adjust the external pipes according to actual needs to adapt to different working environments and requirements. Attached Figure Description

[0018] Figure 1 A schematic diagram of a stable low-temperature associated gas recovery device for oil fields;

[0019] Figure 2 This is a partial structural cross-sectional view of the inlet and outlet pipes and external pipe of a low-temperature associated gas recovery device for oil fields with good stability.

[0020] Figure 3 This is a schematic diagram of the connection structure between the inlet and outlet pipes and the annular plate of a low-temperature associated gas recovery device for oilfields with good stability.

[0021] Figure 4 A cross-sectional view of the partial connection structure between the external nozzle and the second annular plate of a low-temperature associated gas recovery device for oilfields with good stability.

[0022] Figure 5 This is a stable low-temperature associated gas recovery device for oil fields. Figure 2 Enlarged view of the structure at point A in the middle.

[0023] In the diagram: 1. Recycling box; 2. Inlet / outlet air pipe; 3. Outer pipe; 4. Hollow disc; 5. Cross-shaped component; 6. Push rod; 7. Strip-shaped mounting slot; 8. Horizontal support rod; 9. Spring 1; 10. Sliding sleeve; 11. Connecting rod; 12. Piston column; 13. Annular plate 1; 14. Annular plate 2; 15. Rectangular groove; 16. Insert rod; 17. Limiting disc; 18. Spring 2; 19. Arc plate; 20. Limiting baffle; 21. Sealing slot; 22. Sealing ring; 23. Through hole; 24. Insert post. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-5 This invention provides a stable low-temperature associated gas recovery device for oilfields, mainly comprising a recovery housing 1 and inlet / outlet pipes 2. The inlet / outlet pipes 2 are installed around the perimeter of the recovery housing 1 for the entry and exit of associated gas from the oilfield. An external pipe 3 is connected to the end of the inlet / outlet pipe 2 for connection to external pipelines or equipment. To ensure no leakage of associated gas during connection, a contact structure is provided inside the inlet / outlet pipe 2 and the external pipe 3. The contact structure includes a hollow disk 4 fixed to the inner wall of the inlet / outlet pipe 2 and a cross 5 fixed to the inner wall of the external pipe 3. A push contact rod 6 is fixedly connected to the center of the cross 5. When the external pipe 3 connects to the inlet / outlet pipe 2, the push contact rod 6 contacts and pushes the piston rod 12 inside the hollow disk 4. Simultaneously, a reset component is connected between the inlet / outlet pipe 2 and the piston rod 12 to reset the piston rod 12 after connection. Furthermore, an installation / removal mechanism is provided between the inlet / outlet pipe 2 and the external pipe 3 to facilitate the installation and removal of the external pipe 3.

[0026] like Figures 1-5As shown, the installation and dismantling mechanism includes annular plate 13 and annular plate 14, which are fixedly connected to the outer periphery of the ends of the inlet / outlet pipe 2 and the outer pipe 3, respectively. To enhance the stability of the connection, a rectangular groove 15 is opened on the surface of annular plate 13, and a plug rod 16 is inserted into the end wall of the rectangular groove 15. One end of the plug rod 16 is fixedly connected to a limiting plate 17, and the other end is fixedly connected to an arc plate 19. The arc plate 19 is fitted around the outer periphery of annular plate 13, and the detachment of annular plate 14 from annular plate 13 is restricted by a limiting baffle 20. A spring 2 18 is also fitted around the outer periphery of the plug rod 16 to provide the elastic force for the plug rod 16 to return to its original position. Through the design of the plug rod 16, the arc plate 19 and the limiting baffle 20, the connection stability between the inlet / outlet pipe 2 and the outer pipe 3 is further enhanced, preventing them from detaching during operation.

[0027] like Figures 1-5 As shown, the reset component includes a strip-shaped mounting groove 7, a horizontal fixing rod 8, a spring 9, and a sliding sleeve 10. The strip-shaped mounting groove 7 is horizontally opened on the inner wall of the inlet / outlet pipe 2. The horizontal fixing rod 8 is fixedly connected between the two end walls of the strip-shaped mounting groove 7. The spring 9 is sleeved on the outer periphery of the horizontal fixing rod 8. The sliding sleeve 10 is slidably sleeved on the horizontal fixing rod 8 and slidably connected to the inner wall of the strip-shaped mounting groove 7. The opposing surfaces of the two sliding sleeves 10 are fixedly connected to the ends of the connecting rod 11. The connecting rod 11 is then connected to the piston column 12. When the push contact rod 6 pushes the piston column 12 to move, the connecting rod 11 will drive the sliding sleeves 10 to slide on the horizontal fixing rod 8 and compress the spring 9. After docking, the elastic force of the spring 9 will reset the sliding sleeves 10 and the piston column 12. The design of the reset component ensures that the piston column 12 can be accurately reset after docking, thereby ensuring the normal operation of the contact structure.

[0028] like Figures 1-5 As shown, to improve the sealing performance between annular plate 13 and annular plate 14, this embodiment provides a sealing element between them. The sealing element includes a sealing slot 21 formed on the surface of annular plate 13 and a sealing ring 22 fixedly connected to the surface of annular plate 14. When annular plate 13 and annular plate 14 are mated, the sealing ring 22 is inserted into the inner wall of the sealing slot 21, forming a tight sealing connection. The design of the sealing element effectively prevents gas leakage between annular plate 13 and annular plate 14, improving the sealing performance of the device.

[0029] like Figures 1-5As shown, in order to prevent instability caused by relative rotation of annular plate 13 and annular plate 24 during docking, this embodiment has a through hole 23 on the surface of annular plate 13 and a plug-in post 24 fixedly connected to the surface of annular plate 24. When annular plate 13 and annular plate 24 dock, the plug-in post 24 will be inserted into the inner wall of the through hole 23, thereby restricting their relative rotation. Through the design of the plug-in post 24 and the through hole 23, the relative rotation of annular plate 13 and annular plate 24 during docking is effectively prevented, and the stability of the device is improved.

[0030] like Figures 1-5 As shown, one end of spring 18 is fixedly connected to the end wall of rectangular groove 15, and the other end is fixedly connected to the surface of limiting plate 17. When the plug rod 16 is compressed, spring 18 is compressed and stores elastic force; when the external force disappears, the elastic force of spring 18 will cause the plug rod 16 to return to its original position. The design of spring 18 ensures that the plug rod 16 can accurately return to its original position after being compressed by external force, thereby ensuring the normal operation of the installation and removal mechanism.

[0031] like Figures 1-5 As shown, one end of spring 9 is fixedly connected to the end wall of the strip-shaped mounting groove 7, and the other end is fixedly connected to one end surface of the sliding sleeve block 10. When the sliding sleeve block 10 is pushed, spring 9 is compressed and stores elastic force; when the external force disappears, the elastic force of spring 9 will cause the sliding sleeve block 10 to return to its original position. The design of spring 9 ensures that the sliding sleeve block 10 and the piston rod 12 can accurately return to their original position after being pushed by an external force, thereby ensuring the normal operation of the contact structure.

[0032] The working principle of this utility model is as follows: When the outer tube 3 needs to be connected with the inlet and outlet air pipe 2, first ensure that the end of the outer tube 3 is close to the end of the inlet and outlet air pipe 2. At this time, the cross 5 on the inner wall of the outer tube 3 and the push contact rod 6 on it will first contact the hollow disk 4 on the inner wall of the inlet and outlet air pipe 2. As the outer tube 3 is further advanced, the push contact rod 6 will push the piston column 12 on the inner wall of the hollow disk 4. After being pushed, the piston column 12 will slide along the strip-shaped mounting groove 7 on the inner wall of the inlet and outlet air pipe 2 and drive the sliding sleeve block 10 to slide on the horizontal fixing rod 8. At the same time, the spring 9 will be compressed and store elastic force. When the outer tube 3 is fully connected with the inlet and outlet air pipe 2, the elastic force of the spring 9 will reset the sliding sleeve block 10 and the piston column 12, thereby ensuring the normal operation of the contact structure.

[0033] The design of the installation and dismantling mechanism is mainly to facilitate the installation and dismantling of the external pipe 3 and the inlet and outlet pipe 2. During the docking process, the second ring plate 14 will first contact the first ring plate 13. As the external pipe 3 is further advanced, the second ring plate 14 will compress the second spring 18 on the plug rod 16 and make the plug rod 16 slide along the rectangular groove 15. At the same time, the arc plate 19 will be fitted around the outer periphery of the first ring plate 13 and the limiting baffle 20 will restrict the separation of the second ring plate 14 from the first ring plate 13.

[0034] When the outer pipe 3 is fully connected to the inlet / outlet pipe 2, the elastic force of the second spring 18 will cause the plug rod 16 to return to its original position, thereby ensuring a tight connection between the first annular plate 13 and the second annular plate 14. In addition, in order to further improve the stability of the connection, a sealing element is provided between the first annular plate 13 and the second annular plate 14. The sealing element consists of a sealing slot 21 opened on the surface of the first annular plate 13 and a sealing ring 22 fixedly connected to the surface of the second annular plate 14. When the first annular plate 13 and the second annular plate 14 are connected, the sealing ring 22 will be inserted into the inner wall of the sealing slot 21 to form a tight sealing connection.

[0035] Meanwhile, in order to prevent instability caused by the relative rotation of the first annular plate 13 and the second annular plate 14 during the docking process, a through hole 23 is opened on the surface of the first annular plate 13, and a plug-in post 24 is fixedly connected to the surface of the second annular plate 14. When the first annular plate 13 and the second annular plate 14 dock, the plug-in post 24 will be inserted into the inner wall of the through hole 23, thereby restricting their relative rotation.

[0036] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A low-temperature associated gas recovery device with good stability, characterized in that, include: The recycling box (1) and the inlet and outlet pipe (2) installed around the recycling box (1) are connected to the end of the inlet and outlet pipe (2) with an outer pipe (3). The inlet and outlet pipe (2) and the outer pipe (3) are connected by a contact structure to prevent leakage of associated gas when the outer pipe (3) is connected to the inlet and outlet pipe (2). The inlet and outlet pipe (2) and the outer pipe (3) are connected by an installation and removal mechanism. The contact structure includes a hollow disk (4) fixedly installed on the inner wall of the inlet / outlet pipe (2) and a cross (5) fixedly installed on the inner wall of the outer pipe (3). A push contact rod (6) is fixedly connected to the center of the surface of the cross (5) relative to the end of the inlet / outlet pipe (2). A piston rod (12) is piston-connected to the inner wall of the hollow disk (4). A reset component is connected between the inlet / outlet pipe (2) and the piston rod (12). The installation and dismantling mechanism includes a ring plate one (13) fixedly connected to the periphery of the end of the inlet and outlet pipe (2) and a ring plate two (14) fixedly connected to the periphery of the end of the outer pipe (3).

2. The low-temperature associated gas recovery device with good stability according to claim 1, characterized in that, The installation and dismantling mechanism also includes a rectangular groove (15) formed on the surface of the annular plate (13). A plug-in rod (16) is inserted into the end wall of the rectangular groove (15). One end of the plug-in rod (16) is fixedly connected to a limiting plate (17). A spring (18) is sleeved around the plug-in rod (16). An arc plate (19) is fixedly connected to the other end of the plug-in rod (16). The arc plate (19) is sleeved around the annular plate (13). A limiting baffle (20) is fixedly connected to the end of the arc plate (19) to limit the separation of the annular plate (14) from the annular plate (13).

3. The low-temperature associated gas recovery device with good stability according to claim 1, characterized in that, The reset component includes a strip-shaped placement groove (7) that is horizontally opened on the inner wall of the inlet and outlet air pipe (2). A horizontal fixing rod (8) is fixedly connected between the two end walls of the strip-shaped placement groove (7). A spring (9) is sleeved on the outer periphery of the horizontal fixing rod (8). A sliding sleeve block (10) is slidably sleeved on the outer periphery of the horizontal fixing rod (8). The sliding sleeve block (10) is slidably connected to the inner wall of the strip-shaped placement groove (7), and the opposite surfaces of the two sliding sleeve blocks (10) are fixedly connected to the end of the connecting rod (11).

4. The low-temperature associated gas recovery device with good stability according to claim 1, characterized in that, A sealing element is connected between the first annular plate (13) and the second annular plate (14); The seal includes a sealing slot (21) formed on the surface of the first annular plate (13) and a sealing ring (22) fixedly connected to the surface of the second annular plate (14), with the sealing ring (22) inserted into the inner wall of the sealing slot (21).

5. A low-temperature associated gas recovery device with good stability according to claim 1, characterized in that, The surface of the first annular plate (13) is provided with a through hole (23), and the surface of the second annular plate (14) is fixedly connected with a plug (24), and the plug (24) is inserted into the inner wall of the through hole (23) to limit the instability caused by the relative rotation of the first annular plate (13) and the second annular plate (14).

6. A low-temperature associated gas recovery device with good stability according to claim 2, characterized in that, One end of the second spring (18) is fixedly connected to the end wall of the rectangular groove (15), and the other end of the second spring (18) is fixedly connected to the surface of the limiting plate (17).

7. A low-temperature associated gas recovery device with good stability according to claim 3, characterized in that, One end of the spring (9) is fixedly connected to the end wall of the strip groove (7), and the other end of the spring (9) is fixedly connected to one end surface of the sliding sleeve (10).

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