Petroleum transportation pipeline connecting piece

Abstract

The utility model relates to the technical field of petroleum transportation, in particular to a petroleum transportation pipeline connecting piece which comprises a main pipeline, two sets of auxiliary pipelines, two sets of sealing rings, a lifting plate, a threaded rod and a rotating pipe. One end of the threaded rod is fixed to the lifting plate, the other end of the threaded rod penetrates through the main pipeline, the two sealing rings are coaxially arranged in the main pipeline, the ends of the two petroleum pipelines enter the main pipeline through the auxiliary pipeline, the petroleum pipelines can be sleeved with the sealing rings, and the lifting plate can be driven by rotating the rotating pipe to press the sealing rings on the outer walls of the petroleum pipelines. By means of the rotating pipe on the main pipeline, the sealing ring arranged on the outer wall of the petroleum pipeline in a sleeving mode can be tightly pressed on the petroleum pipeline, the situation that the sealing ring easily slides off from the outer wall of the petroleum pipeline when the petroleum transportation pipeline connecting piece is used for a long time is avoided, and therefore the sealing performance of the pipeline connecting piece is enhanced.

Description

Technical Field

[0001] This utility model application relates to the field of petroleum transportation technology, specifically to a petroleum transportation pipeline connector. Background Technology

[0002] As a vital strategic energy source for the nation, the safety and reliability of oil pipeline transportation systems are of paramount importance. Within oil pipeline networks, connectors, as key nodes, play a crucial role in connecting different pipeline sections and maintaining the continuity of medium transport. However, existing oil pipeline connectors commonly suffer from insufficient sealing in practical applications, leading to a persistently high risk of oil leaks and becoming a core technological bottleneck restricting pipeline transportation safety.

[0003] In existing technologies, leakage problems in oil pipeline fittings mainly stem from the following structural defects: First, traditional fittings often rely on manual alignment of pipe joints. For example, when using flange connections, uneven bolt tightening or a pipe axis deviation exceeding 0.5mm can easily create gaps at the joints. When the oil pressure fluctuates within the pipeline, the medium can easily leak out through these gaps. Second, most existing fittings use only a single sealing gasket structure, such as ordinary rubber sealing rings. Their oil resistance and aging resistance are insufficient, and they are prone to swelling and deformation after prolonged contact with oil media. Third, traditional fittings, such as threaded pipe joints, do not consider the erosion and wear caused by oil media in their thread profile design. Over time, the thread clearance increases, leading to loosening of the connection.

[0004] The aforementioned problems lead to frequent leaks in existing oil pipeline connectors during long-term operation, resulting not only in the waste of oil resources but also potential safety accidents such as fires and explosions, as well as environmental pollution. Therefore, how to improve the sealing reliability, vibration resistance, and corrosion resistance of oil pipeline connectors through structural innovation has become a pressing technical challenge in this field. Utility Model Content

[0005] To address the aforementioned issues, an oil transport pipeline connector is provided. A rotating pipe on the main pipeline can press a sealing ring, fitted onto the outer wall of the oil pipeline, firmly onto the pipeline. This prevents the sealing ring from slipping off the outer wall of the oil pipeline during long-term use, thereby increasing the sealing performance of the oil pipeline connection and solving the problem of oil leakage easily caused by traditional pipeline connectors.

[0006] To address the existing technical problems, this utility model application provides a connecting component for an oil transportation pipeline, including a main pipeline, two sets of auxiliary pipelines, two sets of sealing rings, a lifting plate, a threaded rod, and a rotating pipe. The auxiliary pipelines are connected to both ends of the main pipeline. The lifting plate is disposed in the main pipeline. One end of the threaded rod is fixed to the lifting plate, and the other end passes through the main pipeline. The two sealing rings are coaxially disposed in the main pipeline. The ends of the two sets of oil pipelines enter the main pipeline through the auxiliary pipelines. The sealing rings can be fitted onto the oil pipelines. Rotating the rotating pipe can drive the lifting plate to press the sealing rings tightly against the outer wall of the oil pipeline.

[0007] Preferably, the main pipe is divided into an upper half pipe and a lower half pipe along the axis. The upper half pipe and the lower half pipe are hinged on one side and bolted on the other side. The outer walls of the two sets of auxiliary pipes are respectively provided with grooves, and the two ends of the main pipe can be pressed into the grooves respectively.

[0008] Preferably, a through hole is provided on the upper half-tube, a sealed bearing is provided in the through hole, the rotating tube is restricted to rotate within the sealed bearing, and a rotating wheel is fixed to one end of the rotating tube extending out of the upper half-tube.

[0009] Preferably, a sealing gasket is provided on the contact surface between the upper half-pipe and the lower half-pipe.

[0010] Preferably, sealing gaskets are provided at both ends of the main pipe along the contact surface with the groove on the auxiliary pipe.

[0011] Preferably, the auxiliary pipeline includes a pipe body, an adjusting cap, and several clamping blocks. The groove is provided on the outer wall of the pipe body. An enlarged end is provided at the end of the pipe body away from the main pipeline. A threaded section is provided on the outer wall of the enlarged end. Several sliding grooves are evenly provided along the surface of the enlarged end. The clamping blocks are restricted to move in the sliding grooves. The adjusting cap is through the front and rear and engages with the threaded section. Rotating the adjusting cap and moving it away from the main pipeline can gradually press the several clamping blocks against the outer wall of the oil pipeline.

[0012] Preferably, the adjusting cap is a frustum-shaped structure that runs from front to back, and the movement of the adjusting cap away from the main pipe can drive several of the clamping blocks to move closer to each other.

[0013] Preferably, a rubber pad is provided on the side of the clamping blocks that contacts the outer wall of the oil pipeline.

[0014] The advantages of this utility model application compared to the prior art are:

[0015] The rotating tube on the main pipeline can press the sealing ring on the outer wall of the oil pipeline tightly onto the oil pipeline, preventing the sealing ring from slipping off the outer wall of the oil pipeline during long-term use. The main pipeline is designed to be openable and closable, allowing for quick connection of two sets of oil pipelines connected to the auxiliary pipeline. The bolt connection end is equipped with a combination structure of spring washer and anti-loosening nut, which can maintain the preload decay under pipeline vibration conditions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a connecting component for an oil transportation pipeline according to this utility model application.

[0017] Figure 2 This is a schematic diagram of the structure of an oil transportation pipeline connector with the upper and lower half-pipes in an open state, as per this utility model application.

[0018] Figure 3 This is a schematic diagram of the split structure of a connecting component for an oil transportation pipeline according to this utility model application.

[0019] Figure 4 This utility model application presents a schematic diagram of the connection relationship between the lower half-pipe and the lifting plate of a petroleum transportation pipeline connector.

[0020] Figure 5 This utility model application presents a schematic diagram of the auxiliary pipeline split structure of a connecting component for an oil transportation pipeline.

[0021] Figure 6 This utility model application presents a schematic diagram of the main pipe and internal components of a petroleum transportation pipeline connector.

[0022] The numbers in the diagram are: main pipe 1, upper half pipe 10, lower half pipe 11, auxiliary pipe 2, pipe body 20, groove 200, enlarged end 201, threaded section 202, slide groove 203, adjusting cap 21, clamping block 22, sealing ring 3, lifting plate 4, threaded rod 5, rotating pipe 6, rotating wheel 60. Detailed Implementation

[0023] To further understand the features, technical means, and specific objectives and functions achieved by this utility model application, the following detailed description of this utility model application is provided in conjunction with the accompanying drawings and specific embodiments.

[0024] like Figures 1-6As shown, this utility model application provides a connecting component for an oil transportation pipeline, including a main pipeline 1, two sets of auxiliary pipelines 2, two sets of sealing rings 3, a lifting plate 4, a threaded rod 5, and a rotating pipe 6. The two ends of the main pipeline 1 are respectively connected to the auxiliary pipelines 2. The lifting plate 4 is set in the main pipeline 1. One end of the threaded rod 5 is fixed on the lifting plate 4 and the other end passes through the main pipeline 1. The two sealing rings 3 are coaxially set in the main pipeline 1. The ends of the two sets of oil pipelines enter the main pipeline 1 through the auxiliary pipelines 2. The sealing rings 3 can be fitted onto the oil pipelines. Rotating the rotating pipe 6 can drive the lifting plate 4 to press the sealing rings 3 against the outer wall of the oil pipeline.

[0025] The rotating pipe 6 on the main pipeline 1 can press the sealing ring 3, which is fitted on the outer wall of the oil pipeline, onto the oil pipeline, thus preventing the sealing ring 3 from slipping off the outer wall of the oil pipeline during long-term use. It should be noted that the sealing ring 3 is fitted onto the oil pipeline, and one end of the sealing ring 3 contacts the end edge of the auxiliary pipeline 2 that extends into the main pipeline 1. Under the pressing action of the lifting plate 4, the sealing ring 3 can be sealed at the edge of the auxiliary pipeline 2 for a long time.

[0026] The main pipe 1 is divided into an upper half-pipe 10 and a lower half-pipe 11 along its axis. The upper half-pipe 10 and the lower half-pipe 11 are hinged on one side and bolted on the other side. Grooves 200 are respectively provided on the outer walls of the two sets of auxiliary pipes 2, allowing the ends of the main pipe 1 to be pressed into the grooves 200. Figure 2-3 As shown, the main pipeline 1 is designed to be openable and closable, which can quickly connect the two sets of oil pipelines connected to the auxiliary pipeline 2. The bolt connection end is equipped with a combination structure of spring washer and anti-loosening nut, which can maintain the preload attenuation under pipeline vibration conditions.

[0027] A through hole is provided on the upper half-pipe 10, and a sealed bearing is installed inside the through hole. The rotating pipe 6 is restricted to rotating within the sealed bearing. A rotating wheel 60 is fixed to one end of the rotating pipe 6 extending out of the upper half-pipe 10. In order to increase the sealing performance of the main pipe 1, the sealed bearing can reduce the leakage of oil from the through hole. It should also be noted that the surface of the threaded rod 5 is preferably coated with a nickel-based polytetrafluoroethylene composite coating. The self-lubricating property of polytetrafluoroethylene reduces frictional resistance. At the same time, the metallic nickel base is tightly bonded to the thread profile, filling the micro gaps. The internal thread of the rotating pipe 6 adopts a 60° thread angle, and the external thread of the threaded rod 5 adopts a modified 55° thread angle, forming a double seal of interference fit and coating filling, thereby reducing the leakage of oil from the gap between the threaded rod 5 and the rotating pipe 6.

[0028] A sealing gasket is provided at the contact surface between the upper half-pipe 10 and the lower half-pipe 11. Sealing gaskets are also provided at the contact surfaces between the ends of the main pipe 1 and the grooves 200 on the auxiliary pipe 2. To further increase the sealing performance of the device, sealing gaskets are provided on the main pipe 1 and at the contact surfaces between the main pipe 1 and the auxiliary pipe 2, thereby reducing oil leakage.

[0029] The auxiliary pipeline 2 includes a pipe body 20, an adjusting cap 21, and several clamping blocks 22. A groove 200 is provided on the outer wall of the pipe body 20. An enlarged end 201 is provided at the end of the pipe body 20 away from the main pipeline 1. A threaded section 202 is provided on the outer wall of the enlarged end 201. Several sliding grooves 203 are evenly provided along the surface of the enlarged end 201. The clamping blocks 22 are restricted to move within the sliding grooves 203. The adjusting cap 21 extends through the pipeline and engages with the threaded section 202. Rotating the adjusting cap 21 in the direction away from the main pipeline 1 gradually clamps the clamping blocks 22 onto the outer wall of the oil pipeline. Figure 5 As shown, the auxiliary pipe 2 can make the clamping block 22 press against the outer wall of the oil pipeline by rotating the adjusting cap 21 when the oil pipeline passes through the pipe body 20, so that the oil pipeline connection is more stable.

[0030] The adjusting cap 21 is a frustum-shaped structure extending from front to back. Moving the adjusting cap 21 in the direction away from the main pipe 1 can cause several clamping blocks 22 to move closer together. For example... Figure 5 As shown, the diameter of the end of the adjusting cap 21 furthest from the main pipeline 1 is smaller than the diameter of the end of the adjusting cap 21 closest to the main pipeline 1. The side of the clamping block 22 closest to the adjusting cap 21 is provided with an inclined surface that matches the taper. When the adjusting cap 21 moves axially, the inclined surface pushes the clamping block 22 to slide radially within the slide groove 203, thereby clamping the oil pipeline.

[0031] Several clamping blocks 22 have detachable rubber pads on the side that contacts the outer wall of the oil pipeline. The rubber pads reduce wear on the outer wall of the oil pipeline caused by the clamping blocks 22. They are fixed to the clamping blocks 22 by countersunk screws.

[0032] The above embodiments only illustrate one or more implementation methods of this utility model application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model application, and these all fall within the protection scope of this utility model application. Therefore, the protection scope of this utility model application should be determined by the appended claims.

Claims

1. A connector for an oil transportation pipeline, characterized in that, The system includes a main pipe (1), two sets of auxiliary pipes (2), two sets of sealing rings (3), a lifting plate (4), a threaded rod (5), and a rotating pipe (6). The two ends of the main pipe (1) are connected to the auxiliary pipes (2). The lifting plate (4) is set in the main pipe (1). One end of the threaded rod (5) is fixed on the lifting plate (4) and the other end passes through the main pipe (1). The two sealing rings (3) are coaxially set in the main pipe (1). The ends of the two sets of oil pipes enter the main pipe (1) through the auxiliary pipes (2). The sealing rings (3) can be fitted onto the oil pipes. Rotating the rotating pipe (6) can drive the lifting plate (4) to press the sealing rings (3) against the outer wall of the oil pipes.

2. The oil transportation pipeline connector according to claim 1, characterized in that, The main pipe (1) is divided into an upper half pipe (10) and a lower half pipe (11) along the axis. The upper half pipe (10) and the lower half pipe (11) are connected by a hinge on one side and by bolts on the other side. The outer walls of the two sets of auxiliary pipes (2) are respectively provided with grooves (200). The two ends of the main pipe (1) can be pressed into the grooves (200) respectively.

3. The oil transportation pipeline connector according to claim 2, characterized in that, A through hole is provided on the upper half tube (10), a sealed bearing is provided in the through hole, the rotating tube (6) is restricted to rotating in the sealed bearing, and a rotating wheel (60) is fixed at one end of the rotating tube (6) extending out of the upper half tube (10).

4. The oil transportation pipeline connector according to claim 2, characterized in that, A sealing gasket is provided at the contact surface between the upper half-pipe (10) and the lower half-pipe (11).

5. A connecting component for an oil transportation pipeline according to claim 2, characterized in that, Sealing gaskets are provided at both ends of the main pipe (1) along the contact surface with the groove (200) on the auxiliary pipe (2).

6. A connecting component for an oil transportation pipeline according to claim 2, characterized in that, The auxiliary pipeline (2) includes a pipe body (20), an adjusting cap (21), and several clamping blocks (22). The groove (200) is provided on the outer wall of the pipe body (20). An enlarged end (201) is provided at the end of the pipe body (20) away from the main pipeline (1). A threaded section (202) is provided on the outer wall of the enlarged end (201). Several sliding grooves (203) are evenly provided on the surface of the enlarged end (201). The clamping blocks (22) are restricted to move in the sliding grooves (203). The adjusting cap (21) is through the front and back. The adjusting cap (21) is engaged with the threaded section (202). Rotating the adjusting cap (21) and moving it away from the main pipeline (1) can gradually press the several clamping blocks (22) onto the outer wall of the oil pipeline.

7. A petroleum transportation pipeline connector according to claim 6, characterized in that, The adjusting cap (21) is a frustum-shaped structure that runs through the front and back. When the adjusting cap (21) moves in a direction away from the main pipe (1), it can drive several of the pressing blocks (22) to move closer to each other.

8. A petroleum transportation pipeline connector according to claim 6, characterized in that, A rubber pad is detachably provided on the side of the clamping block (22) that contacts the outer wall of the oil pipeline.

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