Corrosion-resistant ball valve for deep-sea carbon dioxide storage injection wellhead

Abstract

The application relates to the technical field of valve manufacturing, and discloses a corrosion-resistant ball valve for a deep-sea carbon dioxide storage injection well mouth, which comprises a main body, and a feeding opening is arranged in the main body. In the process that the rotating ball continues to rotate, the arc-shaped plate is in an inclined state at the moment, the side wall of the through groove located in the rotating ball is in contact with the side edge of the arc-shaped plate, the outer surface of the rotating ball completely seals the inlet of the main body, then the arc-shaped plate is pushed to rotate on the inner wall of the main body when the rotating ball continues to rotate, the closing of the valve is completed, the situation that part of fluid enters the inside of the main body and cannot be discharged when the rotating ball rotates, which leads to excessive corrosion of the external connecting part of the rotating ball, is avoided, the corrosion degree of the internal connecting part of the device caused by carbon dioxide is reduced, and the sealing quality of the valve for deep-sea carbon dioxide is improved.

Description

Technical Field

[0001] This invention relates to the field of valve manufacturing technology, specifically to a corrosion-resistant ball valve for deep-sea carbon dioxide storage injection wellheads. Background Technology

[0002] The corrosion-resistant ball valve at the injection wellhead for deep-sea carbon dioxide storage is a core piece of equipment for ensuring the safety and efficiency of CCUS (carbon capture, utilization, and storage) projects. This valve is typically forged as a whole from high-strength, corrosion-resistant materials such as duplex stainless steel or nickel-based alloys. The valve seat and ball are coated with an ultra-hard coating such as tungsten carbide to form a robust metal hard seal, ensuring "zero leakage" under high pressure differential. It is a key barrier to achieving long-term, safe geological storage of carbon dioxide. When a corrosion-resistant ball valve is in operation, the operator typically connects the valve body to the pipeline supplying the fluid and the pipeline leading to the wellhead. Then, rotating the handle rotates the ball, connecting the fluid supply pipeline to the wellhead via a groove on the ball. At this point, extracted deep-sea carbon dioxide enters the pipeline connected to the wellhead through the inlet and groove. Because the groove on the rotating ball is flat while the inner wall of the valve body is arc-shaped, a large gap exists between the flat groove on the rotating ball and the inner wall of the valve body's inlet when the ball is closed and rotating. As carbon dioxide continues to flow, it easily enters the internal connection points of the device through this gap, leading to excessive corrosion of the external connection parts of the rotating ball. This exacerbates the corrosion of the internal connection points by deep-sea carbon dioxide, affecting the sealing quality of the valve during use. Summary of the Invention

[0003] The purpose of this invention is to provide a corrosion-resistant ball valve for deep-sea carbon dioxide storage injection wellheads to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a corrosion-resistant ball valve for deep-sea carbon dioxide storage injection wellheads, comprising a main body with an inlet port inside, and further comprising: The motion mechanism is installed inside the main body and is used to move when the main body rotates; The driving mechanism is installed inside the main body and is used to apply thrust to the moving mechanism when the main body moves.

[0005] Furthermore, the main body has an internal discharge port, and the main body also includes: The opening and closing component is installed inside the main body and is used for opening and closing inside the main body; The positioning component is installed inside the main body to assist the operation of the other components.

[0006] Furthermore, the sports apparatus includes: A sliding component is installed inside the positioning component and is used to slide inside the positioning component. A rotating component is installed inside the opening and closing component and is used to rotate when the opening and closing component moves.

[0007] Furthermore, the promoting organizations include: The movable component is installed inside the opening and closing component and is used for movement within the opening and closing component. Furthermore, the opening and closing assembly includes a rotating shaft rotatably connected inside the main body, and a rotating ball is fixedly connected to the bottom of the rotating shaft; The top of the rotating shaft is equipped with a handle, and the outer surface of the rotating ball is in contact with the inner wall of the main body.

[0008] Furthermore, the interior of the rotating ball is provided with a through groove, and the side wall of the through groove is provided with a placement groove; The front side of the through groove contacts the inlet, the rear side of the through groove contacts the outlet, and the entire placement groove is arc-shaped.

[0009] Furthermore, the positioning component includes a fixing block fixedly connected to the inner wall of the main body, and a sliding groove is provided on the top of the fixing block; The top of the fixed block penetrates the rotating ball into the interior of the fixed block.

[0010] Furthermore, the sliding assembly includes a spring 1 fixedly connected to the side wall of the sliding groove, and a sliding rod fixedly connected to the end of the spring 1 away from the sliding groove; The outer surface of the sliding rod is slidably connected to the inner wall of the sliding groove.

[0011] Furthermore, the rotating assembly includes several springs two fixedly connected to the inner wall of the placement groove, and the ends of the several springs two away from the placement groove are fixedly connected to the side wall of the arc-shaped plate. The inner surface of the arc-shaped plate is rotatably connected to the outer surface of the sliding rod, the outer surface of the arc-shaped plate is in contact with the inner wall of the main body, and the sides of the arc-shaped plate are arc-shaped.

[0012] Furthermore, the moving component includes two connecting blocks rotatably connected to the sidewall of the arc-shaped plate, and the two connecting blocks are rotatably connected to an arc-shaped rod on one side close to each other; The side wall of the arc-shaped rod has several flow grooves, and a moving block is fixedly connected to the side wall of the arc-shaped rod. The side wall of the movable block is slidably connected to the inner wall of the fixed block.

[0013] The present invention has the following beneficial effects: (1) In the present invention, as the rotating ball continues to rotate, since the arc plate is in an inclined state at this time, the side wall of the through groove inside the rotating ball will contact the side of the arc plate, and the outer surface of the rotating ball will completely seal the entrance of the main body. Then, as the rotating ball continues to rotate, it will push the arc plate to rotate on the inner wall of the main body, thereby completing the closure of the valve. This reduces the situation where some fluid enters the interior of the main body and cannot be discharged when the ball valve is closed, resulting in excessive corrosion of the external connection part of the rotating ball. It also reduces the degree of carbon dioxide corrosion at the internal connection of the device and improves the sealing quality of the valve against deep-sea carbon dioxide during use.

[0014] (2) In this invention, after the arc plate is pushed, it will push the spring to slide inside the sliding groove. When the sliding rod slides, it will apply a pushing force to the spring to contract. After the arc plate is pushed by the through groove to move a certain distance, the part of the arc plate that contacts the inlet will enter the inside of the through groove, thereby making the rotating ball close the inlet. This reduces the situation where the side wall of the arc plate gets stuck at the interface of the through groove and cannot continue to close during the process of the rotating ball pushing the arc plate to close the inlet. This enhances the sealing effect of the rotating ball and further improves the sealing quality of the valve for deep-sea carbon dioxide during use.

[0015] (3) In this invention, when the arc plate slides, its side will contact the side of the through groove, thereby sealing the gap between the arc plate and the through groove. Then, when the through groove pushes the arc plate to move, the arc plate will push the arc rod to reset and move through the side wall. This reduces the situation where some deep-sea carbon dioxide is guided into the inner wall of the through groove by the arc plate when the rotating ball rotates to close. As a result, some of the carbon dioxide will come into contact with the side wall of the through groove and thus escape into the gap between the arc plate and the through groove. This keeps the operation of the rotating shaft and the rotating ball stable and improves the sealing efficiency of the valve during use.

[0016] (4) In this invention, when the rotating ball is not completely closed, some deep-sea carbon dioxide will carry some particles and, guided by the inner wall of the arc plate, contact the inclined surface of the arc rod and then enter the interior of the through groove through the flow channel. This reduces the situation where some particles of deep-sea carbon dioxide adhere to the contact surface between the arc rod and the arc plate during transportation when the arc rod is sealing the gap between the arc plate and the through groove. This reduces the wear of the arc plate and further improves the sealing efficiency of the valve during use.

[0017] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall partial cross-sectional structure of the present invention; Figure 3 This is a partial cross-sectional schematic diagram of the main body of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 This is a partial cross-sectional view of the sliding component of the present invention; Figure 6 This is a schematic diagram of the rotating component of the present invention; Figure 7 This is a diagram showing the connection relationships of some components of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of point B in the middle; Figure 9 This is a partial cross-sectional view of the opening and closing component of the present invention; Figure 10 For the present invention Figure 9 Enlarged view of point C in the middle.

[0020] The attached diagram lists the components represented by each number as follows: In the diagram: 1. Main body; 101. Inlet; 102. Outlet; 11. Opening and closing assembly; 111. Rotating shaft; 112. Rotating ball; 113. Through groove; 114. Placement groove; 12. Positioning assembly; 121. Fixing block; 122. Sliding groove; 2. Motion mechanism; 21. Sliding assembly; 211. Spring 1; 212. Sliding rod; 22. Rotating assembly; 221. Spring 2; 222. Arc plate; 3. Pushing mechanism; 31. Moving assembly; 311. Connecting block; 312. Arc rod; 313. Flow groove; 314. Moving block. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-10 As shown, the present invention is a corrosion-resistant ball valve for deep-sea carbon dioxide storage injection wellheads, comprising a main body 1, wherein an inlet 101 is provided inside the main body 1, and further comprising: Motion mechanism 2 is installed inside the main body 1 and is used to move when the main body 1 rotates; The pushing mechanism 3 is installed inside the main body 1 and is used to apply a thrust to the motion mechanism 2 when the main body 1 moves.

[0023] The main body 1 has a discharge port 102 inside, and the main body 1 also includes: The opening and closing component 11 is installed inside the main body 1 and is used to open and close inside the main body 1. Positioning component 12 is installed inside the main body 1 to assist the operation of the other components.

[0024] Motion mechanism 2 includes: Sliding component 21 is installed inside positioning component 12 and is used to slide inside positioning component 12. Rotating component 22 is installed inside the opening and closing component 11 and is used to rotate when the opening and closing component 11 moves.

[0025] The driving body 3 includes: The movable component 31 is installed inside the opening and closing component 11 and is used to move inside the opening and closing component 11.

[0026] The opening and closing assembly 11 includes a rotating shaft 111 rotatably connected inside the main body 1, and a rotating ball 112 is fixedly connected to the bottom of the rotating shaft 111. The rotating shaft 111 has a handle at the top, and the outer surface of the rotating ball 112 is in contact with the inner wall of the main body 1. When the rotating shaft 111 rotates, it will drive the rotating ball 112 to rotate inside the main body 1. When the rotating ball 112 rotates, it will drive the through groove 113 to rotate.

[0027] The rotating ball 112 has a through groove 113 inside, and the side wall of the through groove 113 has a placement groove 114. The front side of the through groove 113 contacts the inlet 101, and the rear side of the through groove 113 contacts the outlet 102. The placement groove 114 is arc-shaped. When the through groove 113 rotates to fit the front and rear sides against the side walls of the inlet 101 and the outlet 102, the rotating shaft 111 is stopped so that the rotating ball 112 and the through groove 113 remain stationary.

[0028] The positioning component 12 includes a fixing block 121 fixedly connected to the inner wall of the main body 1, and a sliding groove 122 is provided on the top of the fixing block 121; The top of the fixed block 121 extends through the rotating ball 112 into the interior of the fixed block 121. During the reset rotation of the rotating shaft 111, the rotating ball 112 is driven to be located on the fixed block 121 and undergo reset rotation.

[0029] The sliding assembly 21 includes a spring 211 fixedly connected to the side wall of the sliding groove 122, and a sliding rod 212 fixedly connected to the end of the spring 211 away from the sliding groove 122. The outer surface of the sliding rod 212 is slidably connected to the inner wall of the sliding groove 122. When the arc plate 222 is pushed, it will push the spring 211 to slide inside the sliding groove 122. When the sliding rod 212 slides, it will apply a pushing force to the spring 211 to cause the spring 211 to contract.

[0030] The rotating assembly 22 includes a plurality of springs 221 fixedly connected to the inner wall of the placement groove 114, and one end of the plurality of springs 221 away from the placement groove 114 is fixedly connected to the side wall of the arc plate 222. The inner surface of the arc plate 222 is rotatably connected to the outer surface of the sliding rod 212. The outer surface of the arc plate 222 is in contact with the inner wall of the main body 1. The side of the arc plate 222 is arc-shaped. When the rotating shaft 111 rotates, the arc plate 222 will rotate around the sliding rod 212. At this time, some fluid will enter the interior of the through groove 113 under the guidance of the inner wall of the arc plate 222. When the arc plate 222 rotates, it will pull several springs 221 connected to its side wall to extend and accumulate potential energy.

[0031] The moving component 31 includes two connecting blocks 311 rotatably connected to the side wall of the arc plate 222, and the two connecting blocks 311 are rotatably connected to an arc rod 312 on one side close to each other; The side wall of the arc-shaped rod 312 is provided with several flow grooves 313, and a moving block 314 is fixedly connected to the side wall of the arc-shaped rod 312. The side wall of the movable block 314 is slidably connected to the inner wall of the fixed block 121. When the arc plate 222 rotates, its side wall will apply a pulling force to the arc rod 312 through the connecting block 311. When the arc rod 312 is under tension, it will slide towards the arc plate 222 through the movable block 314 on the side wall of the through groove 113.

[0032] In use, the operator first connects the inlet 101 inside the main body 1 to the pipeline for conveying fluid, and the outlet 102 to the pipeline entering the wellhead. Then, the operator rotates the rotating shaft 111 by the handle on top of the rotating shaft 111. When the rotating shaft 111 rotates, it will drive the rotating ball 112 inside the main body 1 to rotate. When the rotating ball 112 rotates, it will drive the through channel 113 to rotate. When the through channel 113 rotates and is in a state of communication with the inlet 101 and the outlet 102, the rotating shaft 111 is stopped and the rotating ball 112 is brought to a standstill. Then, deep-sea carbon dioxide is extracted. The extracted deep-sea carbon dioxide moves into the through channel 113 through the pipeline connected to the inlet 101. After passing through the through channel 113, the deep-sea carbon dioxide enters the pipeline connected to the wellhead through the outlet 102, thus completing the transportation.

[0033] When the valve needs to be closed, the operator first rotates the rotating shaft 111 to reset it by gripping the handle. During the reset rotation of the rotating shaft 111, the rotating ball 112 is also reset on the fixed block 121. When the rotating ball 112 rotates, since the side wall of the arc plate 222 is in contact with the inner wall of the main body 1, the arc plate 222 will rotate around the sliding rod 212 when the rotating shaft 111 rotates. At this time, some fluid will enter the interior of the through groove 113 under the guidance of the inner wall of the arc plate 222. When the arc plate 222 rotates, it will pull several springs 221 connected to its side wall to extend and accumulate potential energy. As the rotating ball 112 continues to rotate... During the process, since the arc plate 222 is in an inclined state, the side wall of the through groove 113 inside the rotating ball 112 will contact the side of the arc plate 222. The outer surface of the rotating ball 112 will completely seal the entrance of the main body 1. Then, as the rotating ball 112 continues to rotate, it will push the arc plate 222 to rotate on the inner wall of the main body 1, thereby completing the closure of the valve. This reduces the situation where some fluid enters the interior of the main body 1 and cannot be discharged when the ball valve is closed, resulting in excessive corrosion of the external connection part of the rotating ball 112. It also reduces the degree of corrosion of the internal connection of the device by deep-sea carbon dioxide and improves the sealing quality of the valve against deep-sea carbon dioxide during use.

[0034] When the rotating ball 112 returns to its original position, the arc-shaped plate 222 rotates around the sliding rod 212 under the reaction force of the inner wall of the main body 1. At this time, the position of the arc-shaped plate 222 does not change. Then, when the rotating ball 112 continues to rotate, its inner wall will contact the side of the arc-shaped plate 222. Since the side of the arc-shaped plate 222 is arc-shaped, the through groove 113 inside the rotating ball 112 will contact the side wall of the arc-shaped plate 222 and apply a pushing force to the arc-shaped plate 222. After the arc-shaped plate 222 receives the pushing force, it will push the spring 211 to slide inside the sliding groove 122. When the valve is activated, a thrust is applied to spring 211, causing it to contract. After the arc plate 222 is pushed and moved a certain distance by the through groove 113, the part of the arc plate 222 that contacts the inlet 101 will enter the interior of the through groove 113, thereby causing the rotating ball 112 to close the inlet 101. This reduces the situation where the side wall of the arc plate 222 gets stuck at the interface of the through groove 113 and cannot continue to close during the process of the rotating ball 112 pushing the arc plate 222 to close the inlet 101, thus enhancing the sealing effect of the rotating ball 112 and further improving the sealing quality of the valve for deep-sea carbon dioxide during use.

[0035] During the rotation of the arc-shaped plate 222 around the sliding rod 212, a gap is created between the end of the arc-shaped plate 222 connected to the spring 221 and the through groove 113. Then, as the arc-shaped plate 222 rotates, its sidewall applies tension to the arc-shaped rod 312 via the connecting block 311. When the arc-shaped rod 312 is under tension, it slides towards the arc-shaped plate 222 on the sidewall of the through groove 113 via the moving block 314. As the arc-shaped plate 222 slides, its sidewall contacts the side of the through groove 113, thereby closing the gap between the arc-shaped plate 222 and the through groove 113. After sealing, when the arc plate 222 is moved by the passage 113, the arc plate 222 will push the arc rod 312 to reset through the side wall. This reduces the situation where some deep-sea carbon dioxide is guided by the arc plate 222 into the inner wall of the passage 113 when the rotating ball 112 rotates to close. As a result, some of the carbon dioxide will come into contact with the side wall of the passage 113 and escape into the gap between the arc plate 222 and the passage 113. This keeps the operation of the rotating shaft 111 and the rotating ball 112 stable and improves the sealing efficiency of the valve during use.

[0036] When the channel 113 pushes the arc-shaped plate 222 to move via its side, the side wall of the arc-shaped plate 222 contacts the bottom of the arc-shaped rod 312. The thrust generated during the movement of the arc-shaped plate 222 then pushes the arc-shaped rod 312 to move after contacting its inclined surface. This prevents the arc-shaped plate 222 from rubbing against the inner wall of the rotating ball 112 after being pushed by the channel 113. Afterwards, when the rotating ball 112 is not completely closed, some deep-sea carbon dioxide... The particles carried by the valve will be guided by the inner wall of the arc plate 222 and then come into contact with the inclined surface of the arc rod 312 before entering the interior of the through groove 113 through the flow groove 313. This reduces the occurrence of some particles adhering to the contact surface between the arc rod 312 and the arc plate 222 when the arc rod 312 is sealing the gap between the arc plate 222 and the through groove 113. This reduces the wear of the arc plate 222 and further improves the sealing efficiency of the valve during use.

[0037] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A corrosion-resistant ball valve for deep-sea carbon dioxide storage injection wellhead, comprising a body, wherein an inlet is provided inside the body, characterized in that, Also includes: A motion mechanism is installed inside the main body and is used to move when the main body rotates; A pushing mechanism is installed inside the main body and is used to apply thrust to the motion mechanism when the main body moves.

2. The corrosion-resistant ball valve for deep-sea carbon dioxide storage injection wellhead according to claim 1, characterized in that: The main body has a discharge port inside, and the main body also includes: An opening and closing component is installed inside the main body and is used for opening and closing inside the main body; A positioning component is installed inside the main body.

3. The corrosion-resistant ball valve for deep-sea carbon dioxide storage injection wellhead according to claim 2, characterized in that: The motion mechanism includes: A sliding component, wherein the sliding component is installed inside the positioning component; A rotating component is installed inside the opening and closing component and is used to rotate when the opening and closing component moves.

4. The corrosion-resistant ball valve for deep-sea carbon dioxide storage injection wellhead according to claim 3, characterized in that: The propulsion mechanism includes: A movable component is installed inside the opening and closing component for moving within the opening and closing component.

5. The corrosion-resistant ball valve for deep-sea carbon dioxide storage injection wellhead according to claim 4, characterized in that: The opening and closing assembly includes a rotating shaft rotatably connected inside the main body, and a rotating ball is fixedly connected to the bottom of the rotating shaft; The rotating shaft has a handle at its top, and the outer surface of the rotating ball is in contact with the inner wall of the main body.

6. The corrosion-resistant ball valve for deep-sea carbon dioxide storage injection wellhead according to claim 5, characterized in that: The rotating ball has a through groove inside, and the side wall of the through groove has a placement groove; The front side of the through groove is in contact with the inlet, and the rear side of the through groove is in contact with the outlet.

7. A corrosion-resistant ball valve for deep-sea carbon dioxide storage injection wellhead according to claim 6, characterized in that: The positioning component includes a fixing block fixedly connected to the inner wall of the main body, and a sliding groove is provided on the top of the fixing block; The top of the fixed block extends through the rotating ball into the interior of the fixed block.

8. A corrosion-resistant ball valve for deep-sea carbon dioxide storage injection wellhead according to claim 7, characterized in that: The sliding assembly includes a spring fixedly connected to the side wall of the sliding groove, and a sliding rod is fixedly connected to the end of the spring away from the sliding groove; The outer surface of the sliding rod is slidably connected to the inner wall of the sliding groove.

9. A corrosion-resistant ball valve for deep-sea carbon dioxide storage injection wellhead according to claim 8, characterized in that: The rotating assembly includes several springs II fixedly connected to the inner wall of the placement groove, and the ends of the several springs II away from the placement groove are fixedly connected to the side wall of the arc plate. The interior of the arc-shaped plate is rotatably connected to the outer surface of the sliding rod, and the outer surface of the arc-shaped plate is in contact with the inner wall of the main body.

10. A corrosion-resistant ball valve for deep-sea carbon dioxide storage injection wellhead according to claim 9, characterized in that: The movable component includes two connecting blocks rotatably connected to the side wall of the arc-shaped plate, and the two connecting blocks are rotatably connected to an arc-shaped rod on one side close to each other; The side wall of the arc-shaped rod is provided with several flow grooves, and a moving block is fixedly connected to the side wall of the arc-shaped rod. The side wall of the movable block is slidably connected to the inner wall of the fixed block.

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