Pipe cleaning ball device for oil and gas chemical wharf

Abstract

This utility model discloses a pigging device for oil and gas chemical terminals. The pigging device includes a flange cover, a flange, a purge port, a pressure gauge port, an exhaust port, a ball retainer, a reducer, a first valve, a second valve, a first pipeline, a second pipeline, a third pipeline, and a fourth pipeline. The pigging device uses a pig for cleaning, and the pig includes a cleaning layer, a fixing core, and baffles. The flange cover is used to seal the open end of the equipment and prevent internal media leakage. The purge port is used to connect external purge media to the pipeline system, pushing the pig to perform the cleaning operation and ensuring that the pressure of the pigging device drops to a safe range. The ball retainer, through mechanical buffering and positioning, ensures the safety and reliability of the pig's deployment and retrieval process, while reducing equipment wear. This pigging device for oil and gas chemical terminals can solve the problem of cleaning oil and gas chemical pipelines in port engineering. Furthermore, this device is easy to operate, occupies a small area, and requires low investment.

Description

Technical Field

[0001] The embodiments of this utility model belong to the field of terminal liquid process transportation technology, and more specifically, relate to a pigging device for oil and gas chemical terminals. Background Technology

[0002] In the daily operation of oil and gas chemical terminals, pipeline transportation systems are core infrastructure. During the transportation of oil, liquefied natural gas and chemicals, various pollutants gradually accumulate on the inner walls of pipelines. These deposits can lead to a significant decrease in pipeline transportation efficiency, cross-contamination of products, and problems such as pipeline blockage or stress corrosion cracking. Therefore, establishing an efficient and reliable pipeline cleaning mechanism is an indispensable part of terminal operation.

[0003] Currently, the industry generally adopts "pipeline cleaning technology" as the main means of pipeline cleaning. This technology sends a "pipeline cleaner" with specific functions into the pipeline and uses the pressure difference between the media before and after it to drive its operation in the pipeline to achieve cleaning, detection or isolation purposes. Typical oil and gas transportation system pigging devices use pig launching and receiving cylinders, which occupy a large area and are cumbersome to operate. Existing pigging technology has problems such as poor adaptability, low efficiency and insufficient controllability in the application of oil and gas chemical terminals, making it difficult to meet the terminal pipeline system's needs for efficient, safe and flexible cleaning. Summary of the Invention

[0004] To address the aforementioned deficiencies or improvement needs of existing technologies, this utility model provides a pigging device for oil and gas chemical terminals. By connecting a flange and flange cover to the outside of the third pipeline, leakage of the internal medium from the pipeline is prevented, ensuring system sealing. A purge port at the top of the third pipeline allows external purge medium to be introduced into the pipeline system, propelling the pig for pigging operations. An vent at the top of the third pipeline releases residual gas pressure from the pigging device, ensuring the pressure drops to a safe range. A baffle installed on one side of the second pipeline provides mechanical buffering and positioning for the pig, ensuring the safety and reliability of the pig's deployment and retrieval processes while reducing equipment wear.

[0005] To achieve the above objectives, this utility model provides a pigging device for oil and gas chemical terminals, comprising: A flange located at the pipe opening outside the third pipe and a flange cover located outside the flange; A purge port located at the top of the third pipe near the flange and an exhaust port located at the top of the third pipe; A ball-blocking grate is installed on one side of the second pipeline and inside the third pipeline; the pigging device is a pipeline structure.

[0006] Furthermore, it also includes a pressure gauge interface located at the top of the third pipe; the pressure gauge interface is located between the purge interface and the exhaust port.

[0007] Furthermore, it also includes a reducing fitting located on the other side of the third pipe.

[0008] Furthermore, the pipeline cleaning device uses a pipeline cleaning tool to complete the pipeline cleaning work.

[0009] Furthermore, the pipeline pig includes a cleaning layer disposed on the outermost side of the pipeline pig.

[0010] Furthermore, the pig also includes a fixing core located in the middle of the cleaning layer.

[0011] Furthermore, the pig also includes a baffle plate located at the bottom of the fixed core.

[0012] In summary, compared with the prior art, the above-described technical solution conceived by this utility model can achieve the following beneficial effects: 1. The device of this utility model, through the flange and flange cover connected to the outside of the third pipeline, achieves the function of preventing the internal medium of the pipeline from leaking outward and ensuring the system's sealing performance. Through the purging interface at the top of the third pipeline, the external purging medium is introduced into the pipeline system to drive the pig to perform the pigging operation. Through the exhaust port at the top of the third pipeline, the residual gas pressure of the pigging device is released, ensuring that the pressure of the pigging device drops to a safe range. Through the ball baffle installed on one side of the second pipeline, the pig can be provided with mechanical buffering and positioning, ensuring the safety and reliability of the pig's receiving and dispatching process, while reducing equipment wear.

[0013] 2. The pipeline cleaning device of this utility model removes the accumulated liquid and separation medium adhering to the inner wall of the pipeline by friction between the cleaning layer and the inner wall of the pipeline. By installing the cleaning layer on the fixed core, the cleaning layer can be easily replaced to ensure the actual effect of the pipeline cleaning device. The baffle installed at the bottom of the fixed core makes it easy to remove the pipeline cleaning device from the pipeline. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a pigging device for an oil and gas chemical terminal according to an embodiment of the present invention; Figure 2 This is a top view of a pigging device for an oil and gas chemical terminal according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the pigging device for an oil and gas chemical terminal near the third pipeline according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the pig in an embodiment of this utility model; Figure 5This is a side view of the pigging device according to an embodiment of the present invention; Figure 6 This is a cross-sectional view of the pig at point AA in an embodiment of this utility model.

[0015] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-flange cover, 2-flange, 3-purge port, 4-pressure gauge port, 5-vent, 6-ball guard, 7-reducer, 8-first valve, 9-second valve, 10-first pipe, 11-second pipe, 12-third pipe, 13-fourth pipe, 14-cleaning layer, 15-fixed core, 16-baffle. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0017] In the description of the embodiments of this utility model, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0018] Furthermore, the use of terms such as "horizontal," "vertical," and "sag" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0019] In the description of the embodiments of this utility model, "a plurality of" means at least two.

[0020] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] This novel embodiment provides a pigging device for oil and gas chemical terminals, such as... Figure 1 , Figure 2 , Figure 3As shown, the system includes a flange cover 1, a flange 2, a purge port 3, a pressure gauge port 4, an exhaust port 5, a ball retainer 6, a reducer 7, a first valve 8, a second valve 9, a first pipe 10, a second pipe 11, a third pipe 12, and a fourth pipe 13. The pigging device is a pipeline structure. The first pipe 10 and the second pipe 11 are located below, while the third pipe 12 and the fourth pipe 13 are located above. The first pipe 10 and the second pipe 11 are connected by the second valve 9. A ball retainer 6 is connected to the other end of the second pipe 11. When the pig starts working, the ball retainer 6 provides mechanical buffering and positioning for the pig, ensuring the safety and reliability of the pig's dispatching and receiving process, while reducing equipment wear. The ball retainer 6 is located inside the third pipe 12. A flange 2 is installed on the external pipe opening on one side of the third pipe 12, and a flange cover 1 is installed at the external interface of the flange 2. Flange 2 is used for external connection of the pigging device, and flange cover 1 is used to seal the open end of the pigging device to prevent internal pipeline medium from leaking out and ensure system sealing. A purge port 3 is opened at the top of the third pipeline 12 as a physical connection point. The purge port 3 is used to connect the external purge medium to the pipeline system and push the pig to perform pigging operations. A pressure gauge port 4 is opened at the top of the third pipeline 12. A pressure gauge is installed at the pressure gauge port 4 to monitor the pressure of the pigging device in real time. An exhaust port 5 is opened at the top of the third pipeline 12. After the pigging device has finished cleaning, the residual gas pressure of the pigging device is released through the exhaust port 5 to ensure that the pressure of the pigging device drops to a safe range and to ensure safety when opening flange cover 1. A reducer 7 is connected to the other side of the third pipeline 12. A first valve 8 is connected to the other side of the reducer 7. A fourth pipeline 13 is connected to the other side of the first valve 8. The device of this utility model, through the flange and flange cover connected to the outside of the third pipeline, achieves the function of preventing the internal medium of the pipeline from leaking outward and ensuring the system's sealing. Through the purging interface at the top of the third pipeline, the external purging medium is introduced into the pipeline system to drive the pig to perform the pigging operation. Through the exhaust port at the top of the third pipeline, the residual gas pressure of the pigging device is released, ensuring that the pressure of the pigging device drops to a safe range. Through the ball baffle installed on one side of the second pipeline, the pig can be mechanically buffered and positioned, ensuring the safety and reliability of the pig's receiving and dispatching process, while reducing equipment wear.

[0022] Specifically, such as Figure 4 , Figure 5 , Figure 6As shown, the pigging device uses a pig for cleaning. The pig includes a cleaning layer 14, a fixing core 15, and baffles 16. The cleaning layer 14 is installed outside the fixing core 15 and is the outermost part of the pig that directly contacts the inner wall of the pipe. The cleaning layer 14 is made of neoprene rubber, and its outermost radius is typically 10% of the pipe diameter. As the pig moves forward, the cleaning layer 14 rubs against the inner wall of the pipe, removing the accumulated liquid and separation medium (mostly oil stains in this embodiment) adhering to the inner wall of the pipe. The cleaning layer 14 needs to be replaced periodically during long-term use. The fixing core 15 is a component used to fix the cleaning layer 14 of the pig. There is a guide cone at the top of the fixing core 15 and a clearance hole for removing the pig at the bottom of the fixing core 15. Multiple baffles 16 are installed on the screw holes at the bottom of the fixing core 15 (two in this embodiment). The baffles 16 are symmetrically installed at the bottom of the fixing core 15. When it is necessary to remove the pig, a tool is inserted into the third pipe 12 and inserted into the clearance hole on the fixing core 15, so that the baffles 16 jam the tool and pull it outward to remove the pig. The pipeline cleaning device of this invention removes accumulated liquid and separation medium adhering to the inner wall of the pipeline by friction between the cleaning layer and the inner wall of the pipeline. By installing the cleaning layer on the fixed core, the cleaning layer can be easily replaced to ensure the actual effect of the pipeline cleaning device. The baffle installed at the bottom of the fixed core makes it easy to remove the pipeline cleaning device from the pipeline.

[0023] In another embodiment of this utility model, a pigging device for an oil and gas chemical terminal is provided, comprising the following steps: Identify the type of medium in the main pipeline 9 to be cleaned and select a suitable pipeline pig.

[0024] Close the first valve 8, open the second valve 9, and use the purge port 3 to empty the material inside the pigging device.

[0025] After opening the vent 5 to reduce the pressure inside the pigging device to a safe range, insert the pig and close the flange cover 1.

[0026] Open the first valve 8 and the purge port 3 and serve the ball.

[0027] Open the first valve 8 and the second valve 9. After the pig reaches the designated position, close the first valve 8 and use the purge port 3 to empty the material in the pig device.

[0028] After opening the vent 5 to reduce the pressure inside the pigging device to a safe range, open the flange cover 1 and remove the pigging device.

[0029] In summary, the pipeline cleaning device used in oil and gas chemical terminals can solve the problem of pipeline cleaning in port engineering oil and gas chemical projects. Moreover, this device is easy to operate, occupies a small area, and requires low investment.

[0030] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pigging device for oil and gas chemical terminals, characterized in that, include: A flange (2) located at the pipe opening outside the third pipe (12) and a flange cover (1) located outside the flange (2); A purge port (3) located on the top of the third pipe (12) near the flange (2) and an exhaust port (5) located on the top of the third pipe (12); A ball-blocking grate (6) is located on one side of the second pipe (11) and inside the third pipe (12); the pigging device is a pipe structure.

2. A pigging device for an oil and gas chemical terminal according to claim 1, characterized in that, It also includes a pressure gauge interface (4) located at the top of the third pipe (12); the pressure gauge interface (4) is located between the purge interface (3) and the exhaust port (5).

3. A pigging device for an oil and gas chemical terminal according to claim 2, characterized in that, It also includes a reducing fitting (7) located on the other side of the third pipe (12).

4. A pigging device for an oil and gas chemical terminal according to any one of claims 1-3, characterized in that, The pipeline cleaning device uses a pipeline cleaner to complete the pipeline cleaning work.

5. A pigging device for an oil and gas chemical terminal according to claim 4, characterized in that, The pig includes a cleaning layer (14) located on the outermost side of the pig.

6. A pigging device for an oil and gas chemical terminal according to claim 5, characterized in that, The pig also includes a fixing core (15) located in the middle of the cleaning layer (14).

7. A pigging device for an oil and gas chemical terminal according to claim 6, characterized in that, The pig also includes a baffle (16) located at the bottom of the fixed core (15).

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