High-heat-resistance double-hollow sucker rod

Abstract

The utility model provides a high thermal resistance double hollow sucker rod, which relates to the technical field of oil production engineering, and comprises an inner pipe and a hollow rod, the surface of the inner pipe is provided with a fixed end flange, the other end of the inner pipe is provided with a movable end flange, and the inner pipe comprises a central pipe, a high thermal resistance thermal insulation material aerogel felt, a protective pipe and a plug. Compared with a double-hollow rod manufactured in a high vacuum mode, the high-heat-resistance double-hollow sucker rod has the advantages of being stable in heat insulation performance, long in service life and the like, and the heat insulation performance of the sucker rod is remarkably improved by arranging the high-heat-resistance heat insulation material aerogel felt on the surface of the inner pipe. The structural strength of the inner pipe is further enhanced through the protection pipe, and long-term stable operation in the high-temperature environment is guaranteed. Due to the design of the fixed end flange and the movable end flange, firm connection between the inner pipe and the hollow rods is guaranteed, the overall reliability of the system is improved, and long-term effectiveness of the heat insulation performance of the double-hollow-rod inner pipe can be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of oil production engineering technology, and in particular to a high thermal resistance double hollow sucker rod. Background Technology

[0002] Currently, double hollow rods manufactured using vacuum insulation methods are widely used in heavy oil extraction with good results. However, if the vacuum tube fails, it will cause significant heat loss to the hot water circulation, preventing heat from being transferred to the ends of the hollow rods. To improve the long-term effective insulation performance of the inner tube of the double hollow rod, a more stable and reliable insulation material is needed to ensure the insulation effect of the inner tube. However, its practicality is poor and improvements are required. Utility Model Content

[0003] The purpose of this utility model is to solve the technical problems mentioned in the background art.

[0004] The present invention adopts the following technical solution: a high thermal resistance double hollow sucker rod, comprising an inner tube and a hollow rod, wherein a fixed end flange is provided on the surface of the inner tube and a movable end flange is provided at the other end of the inner tube, and the inner tube comprises a central tube, a high thermal resistance insulating material aerogel felt, a protective tube, and a plug.

[0005] Preferably, one end of the inner tube is fixedly connected to the hollow rod via a fixed-end flange. This fixed connection ensures a secure connection between the inner tube and the hollow rod, preventing equipment failure due to loose connections and improving system reliability and lifespan.

[0006] Preferably, the other end of the inner tube is fixedly connected to the hollow rod via a movable end flange. This fixed connection ensures a stable connection even under varying forces, improving the flexibility and stability of the equipment during operation and avoiding connection problems caused by thermal expansion and contraction.

[0007] Preferably, the high thermal barrier aerogel felt is disposed on the surface of the central tube. Here, the high thermal barrier aerogel felt disposed on the surface of the central tube effectively reduces the thermal conductivity of the inner tube, significantly improves the thermal insulation performance of the sucker rod, reduces energy loss, and improves the overall oil extraction efficiency.

[0008] Preferably, the protective tube is disposed on the surface of the high thermal barrier aerogel felt. Here, the protective tube, disposed on the surface of the high thermal barrier aerogel felt, provides additional mechanical protection, preventing physical damage to the aerogel felt during operation, and improving the durability of the insulation material and the reliability of the overall system.

[0009] Preferably, the plug is positioned between the central tube and the protective tube. Here, the plug effectively secures the high thermal resistance aerogel felt, preventing displacement or detachment, ensuring the continuity and stability of the insulation effect, and further improving the service life and reliability of the equipment.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0011] Compared to double hollow rods manufactured under high vacuum, this invention offers advantages such as stable thermal insulation performance and long product lifespan. The high thermal resistance double hollow sucker rod significantly improves its thermal insulation performance by incorporating aerogel felt, a high thermal resistance insulating material, on the inner tube surface. The protective tube further enhances the structural strength of the inner tube, ensuring long-term stable operation in high-temperature environments. The design of the fixed-end flange and the movable-end flange guarantees a robust connection between the inner tube and the hollow rod, improving the overall reliability of the system and ensuring the long-term effectiveness of the thermal insulation performance of the double hollow rod's inner tube. Attached Figure Description

[0012] Figure 1 This utility model presents a schematic diagram of the overall structure of a high thermal resistance double hollow sucker rod;

[0013] Figure 2 This utility model presents a partial structural diagram of the inner tube of a high thermal resistance double hollow sucker rod.

[0014] Legend:

[0015] 1. Inner tube; 2. Fixed end flange; 3. Moving end flange; 4. Hollow rod; 1.1. Central tube; 1.2. High thermal barrier aerogel felt; 1.3. Protective tube; 1.4. Plug. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] Example

[0019] Please see Figure 1-2This utility model provides a technical solution: a high thermal resistance double hollow sucker rod, including an inner tube 1 and a hollow rod 4. A fixed-end flange 2 is provided on the surface of the inner tube 1, and a movable-end flange 3 is provided at the other end of the inner tube 1. The inner tube 1 includes a central tube 1.1, a high thermal resistance aerogel felt 1.2, a protective tube 1.3, and a plug 1.4. By providing the fixed-end flange 2 and the movable-end flange 3 on the surface of the inner tube 1, and using the central tube 1.1, the high thermal resistance aerogel felt 1.2, the protective tube 1.3, and the plug 1.4, a high thermal resistance double hollow sucker rod is achieved. The oil rod achieves more efficient heat insulation performance and structural stability. This design not only reduces heat conduction but also enhances overall mechanical strength, ensuring stable operation for extended periods in high-temperature environments. One end of the inner tube 1 is fixedly connected to the hollow rod 4 via the fixed end flange 2, ensuring a secure connection between the inner tube 1 and the hollow rod 4. This prevents equipment failure due to loose connections, improving system reliability and service life. The other end of the inner tube 1 is fixedly connected to the hollow rod 4 via the movable end flange 3. A fixed connection is established between the other end of the inner tube 1 and the hollow rod 4 via the movable end flange 3. This ensures a stable connection even under varying stress conditions, enhancing the flexibility and stability of the equipment during operation and preventing connection problems caused by thermal expansion and contraction. A high thermal barrier aerogel felt 1.2 is applied to the surface of the central tube 1.1, effectively reducing the thermal conductivity of the inner tube 1, significantly improving the insulation performance of the sucker rod, reducing energy loss, and increasing overall pumping efficiency. A protective tube 1.3 is applied to the surface of the high thermal barrier aerogel felt 1.2. The protective tube 1.3 is placed on the surface of the high thermal resistance aerogel felt 1.2, providing additional mechanical protection to prevent physical damage to the aerogel felt during operation, thereby improving the durability of the insulation material and the reliability of the overall system. The plug 1.4 is placed between the central tube 1.1 and the protective tube 1.3, effectively fixing the high thermal resistance aerogel felt 1.2 and preventing it from shifting or falling off, ensuring the continuity and stability of the insulation effect, and further improving the service life and reliability of the equipment.

[0020] Working Principle: The high thermal resistance double hollow sucker rod operates based on its unique structure and material design, ensuring stability and efficiency in high-temperature environments. First, one end of the inner tube 1 is fixedly connected to the hollow rod 4 via the fixed end flange 2, ensuring a firm connection. Next, a high thermal resistance insulation material aerogel felt 1.2 is evenly wrapped around the surface of the inner tube 1 to effectively reduce heat conduction. Then, a protective tube 1.3 is installed outside the aerogel felt to increase mechanical strength and prevent damage to the insulation material. Subsequently, a plug 1.4 is installed between the central tube 1.1 and the protective tube 1.3 to ensure the aerogel felt is fixed and does not shift. Finally, the other end of the inner tube 1 is fixedly connected to the hollow rod 4 via the movable end flange 3, completing the assembly of the entire system. After the entire process is completed, inspection and testing are performed to ensure that all connection points are secure, the insulation material is intact, and the system can operate stably in high-temperature environments.

[0021] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A high thermal resistance double hollow sucker rod, comprising an inner tube (1) and a hollow rod (4), characterized in that: The surface of the inner tube (1) is provided with a fixed end flange (2), the other end of the inner tube (1) is provided with a movable end flange (3), and the inner tube (1) comprises a central tube (1.1), a high heat resistance and heat insulation material aerogel felt (1.2), a protective tube (1.3), and a plug (1.4).

2. The high thermal resistance double hollow sucker rod according to claim 1, characterized in that: One end of the inner tube (1) is fixedly connected to the hollow rod (4) via a fixed end flange (2).

3. The high thermal resistance double hollow sucker rod according to claim 1, characterized in that: The other end of the inner tube (1) is fixedly connected to the hollow rod (4) via a movable end flange (3).

4. The high thermal resistance double hollow sucker rod according to claim 1, characterized in that: The high heat-resistance and heat-insulating material aerogel felt (1.2) is arranged on the surface of the central tube (1.1).

5. The high thermal resistance double hollow sucker rod according to claim 1, characterized in that: The protection tube (1.3) is arranged on the surface of the high heat-resistance heat-insulating material aerogel felt (1.2).

6. The high thermal resistance double hollow sucker rod according to claim 1, characterized in that: The plug (1.4) is arranged between the central tube (1.1) and the protective tube (1.3).

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