A wellhead valve for regulating oil and gas flow and its operation method

Abstract

This invention relates to the field of valve technology, and more particularly to a wellhead valve for regulating oil and gas flow and its operating method. The valve includes a valve body and a valve plate. A valve plate for sealing the valve body is installed on the inner side of the valve body. A valve plate shaft for controlling the rotation of the valve plate is installed on one side of the valve plate, and a handle for controlling the rotation of the valve plate shaft is installed on one side of the valve plate shaft. A driven pulley for driving the valve plate shaft to rotate is installed on the outer side of the valve plate shaft. A transmission belt for driving the driven pulley to rotate is installed on the outer side of the driven pulley. A driving pulley for driving the transmission belt to rotate is installed on the other side of the transmission belt. A vertical shaft for controlling the rotation of the drive pulley is installed inside the driving pulley, and a pressure plate for driving the vertical shaft to rotate is provided on one side of the vertical shaft. In this invention, the pressure of the flowing medium can be automatically detected, thereby facilitating the adjustment of the cross-sectional area of ​​the flowing medium according to the pressure, thus improving the accuracy of flow control.

Description

Technical Field

[0001] This invention relates to the field of valve technology, specifically to a wellhead valve for regulating oil and gas flow and its operating method. Background Technology

[0002] Wellhead valves are devices installed at the wellhead to control the pressure and direction of gas and liquids (oil, water, etc.). They seal the tubing, casing, and casing annulus. There are many types of wellhead valves, which can be classified into the following categories according to their different functions and uses: plate valves, ball valves, butterfly valves, and check valves. Most plate valves currently on the market have a relatively simple structural design, and most can only adjust the flow rate by adjusting the cross-sectional area of ​​the medium. However, this setting is greatly affected by the medium pressure, and the flow rate adjustment error is relatively large in actual use. Therefore, this paper proposes a wellhead valve for oil and gas flow rate regulation and its operation method to address the above problems. Summary of the Invention

[0003] The purpose of this invention is to provide a wellhead valve for regulating oil and gas flow and its operation method, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A wellhead valve for regulating oil and gas flow includes a valve body and a valve plate. A valve plate for sealing the valve body is installed on the inner side of the valve body. A valve plate shaft for controlling the rotation of the valve plate is installed on one side of the valve plate. A handle for controlling the rotation of the valve plate shaft is installed on one side of the valve plate shaft. A driven pulley for rotating the valve plate shaft is installed on the outer side of the valve plate shaft. A transmission belt for rotating the driven pulley is installed on the outer side of the driven pulley. A driving pulley for rotating the transmission belt is installed on the other side of the transmission belt. A vertical shaft for controlling the rotation of the pulley is installed on the inner side of the driving pulley. A pressure plate for rotating the vertical shaft is provided on one side of the vertical shaft.

[0005] Preferably, a membrane ring is installed on the outer side of the pressure plate to facilitate the control of the pressure plate's movement, a connecting ring is installed on the other side of the membrane ring to ensure internal sealing, and a vertical rod for transmission is installed on one side of the pressure plate.

[0006] Preferably, a first compression spring for driving the pressure plate to reset is installed on the outer side of the vertical rod, and a connecting plate for ensuring the stable use of the first spring is installed on the other side of the first reset spring.

[0007] Preferably, a slider for driving the vertical shaft to rotate is installed at the other end of the vertical rod. A vertical cylinder is installed on one side of the slider and is installed on the outside of the vertical rod. A spiral groove for installing the slider is installed on the outside of the vertical cylinder, and a fixing screw for connecting and fixing the vertical cylinder and the vertical rod is installed on the outside of the vertical cylinder.

[0008] Preferably, the outer side of the drive pulley, slider and vertical cylinder is provided with a protective cover, and the outer side of the protective cover is connected to the valve body.

[0009] Preferably, a quadrangular prism for connecting a handle is installed at the top of the valve plate shaft, and a sleeve for fixing the valve plate shaft is slidably mounted on the outer side of the quadrangular prism, with the other end of the sleeve fixed to the handle.

[0010] Preferably, a limiting block for fixing the valve plate is installed on the outer side of the sleeve, and a limiting groove for locking the limiting block is opened at the top of the valve body, and the limiting block and the limiting groove are vertically corresponding.

[0011] Preferably, the lower side of the sleeve is provided with a second compression spring for driving the limiting block to move upward, and the second compression spring is sleeved on the outer side of the quadrangular prism.

[0012] Preferably, a connecting shaft is installed on the outer side of the valve body, and a baffle for fixing the limiting block is rotatably mounted on the outer side of the connecting shaft.

[0013] An operating method for a wellhead valve used for regulating oil and gas flow includes the following steps: Step 1: Pre-adjusting the flow rate: First, lift the handle upwards, and then the sleeve will drive the limit block to disengage from the limit groove. At this time, the second compression spring can not only push the thrust, making it easy for personnel to use, but also continuously provide the force to keep the limit block away from the limit groove. Then, turn the handle, and the sleeve, the four-sided prism and the valve plate shaft will drive the valve plate to rotate, thereby opening the valve body and allowing the medium to flow. At this time, by adjusting the angle of the valve plate rotation, the flow rate can be adjusted. Step Two: Pressure Control Compensation: Then tighten the fixing screws. When the medium flow rate under the pressure plate is relatively fast, the force exerted by the medium on the pressure plate also increases. This, in turn, pushes the pressure plate through the diaphragm ring, which in turn drives the vertical rod and slider to move upward. During the movement of the slider, the vertical cylinder and vertical rod rotate through the spiral groove, which in turn drives the drive pulley to rotate. The drive pulley then drives the driven pulley to rotate through the transmission belt, which in turn drives the valve plate shaft and valve plate to rotate. This changes the angle of the valve plate, thereby reducing the cross-sectional area of ​​the medium and achieving the effect of overall flow control stability. Conversely, when the medium flow rate is relatively slow, the cross-sectional area can be automatically increased, which can also control the flow stability.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the pressure of the medium flow can be automatically detected by setting pressure plates, membrane rings and vertical rods, so as to facilitate the adjustment of the cross-sectional area of ​​the medium flow according to the pressure, thereby improving the accuracy of flow control; 2. In this invention, by using sliders, grooves, vertical cylinders, and drive pulleys, the opening and closing angle of the valve plate can be automatically controlled according to the pressure, thereby achieving the effect of automatic adjustment and control. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure at point A; Figure 4 For the present invention Figure 2 A schematic diagram of the structure at point B; Figure 5 This is a schematic diagram of the transmission belt installation structure of the present invention.

[0016] In the diagram: 1. Valve body; 2. Valve plate; 3. Valve plate shaft; 4. Handle; 5. Driven pulley; 6. Transmission belt; 7. Driven pulley; 8. Vertical shaft; 9. Pressure plate; 10. Diaphragm ring; 11. Connecting ring; 12. Vertical rod; 13. First compression spring; 14. Connecting plate; 15. Slider; 16. Vertical cylinder; 17. Spiral groove; 18. Fixing screw; 19. Protective cover; 20. Quadrilateral prism; 21. Sleeve; 22. Limiting block; 23. Limiting groove; 24. Second compression spring; 25. Connecting shaft; 26. Baffle. Detailed Implementation

[0017] Example 1: Please refer to Figure 1-5 The present invention provides a technical solution: A wellhead valve for regulating oil and gas flow includes a valve body 1 and a valve plate 2. A valve plate 2 for sealing the valve body 1 is installed inside the valve body 1. A valve plate shaft 3 for controlling the rotation of the valve plate 2 is installed on one side of the valve plate 2. A handle 4 for controlling the rotation of the valve plate shaft 3 is installed on one side of the valve plate shaft 3. A driven pulley 5 for driving the valve plate shaft 3 to rotate is installed on the outside of the valve plate shaft 3. A transmission belt 6 for driving the driven pulley 5 to rotate is installed on the outside of the driven pulley 5. A driving pulley 7 for driving the transmission belt 6 to rotate is installed on the other side of the transmission belt 6. A vertical shaft 8 for controlling the rotation of the pulley 7 is installed inside the driving pulley 7. A pressure plate 9 for driving the vertical shaft 8 to rotate is provided on one side of the vertical shaft 8. This arrangement can effectively transmit the force of the pressure plate 9's positional movement to the valve plate shaft 3, thereby achieving the effect of automatically adjusting the position of the valve plate 2.

[0018] A diaphragm ring 10 is installed on the outer side of the pressure plate 9 to facilitate control of its movement. A connecting ring 11 for ensuring internal sealing is installed on the other side of the diaphragm ring 10. A vertical rod 12 for transmission is installed on one side of the pressure plate 9. This arrangement not only allows for better detection of the medium pressure but also enables the transmission of the medium pressure. A first compression spring 13 for resetting the pressure plate 9 is installed on the outer side of the vertical rod 12. A connecting plate 14 for ensuring the stable operation of the first spring 13 is installed on the other side of the first reset spring 13. This arrangement ensures a good reset effect for the pressure plate 9. A vertical shaft 8 is installed at the other end of the vertical rod 12. The slider 15 has a vertical cylinder 16 mounted on one side, which is installed on the outside of the vertical rod 12. A spiral groove 17 for mounting the slider 15 is installed on the outside of the vertical cylinder 16, and a fixing screw 18 for connecting and fixing the vertical cylinder 16 and the vertical rod 12 is also installed on the outside of the vertical cylinder 16. This arrangement not only does not hinder the normal use of the valve plate 2, but also allows for better utilization of the force of the vertical rod 12's movement during use, achieving the effect of automatically adjusting the valve plate 2. A protective cover 19 is provided on the outside of the drive pulley 7, slider 15, and vertical cylinder 16, and the outside of the protective cover 19 is connected to the valve body 1. This arrangement allows for better internal... The structure of the valve body 1 is protected to ensure the service life of the valve plate. A quadrangular prism 20 for connecting the handle 4 is installed at the top of the valve plate shaft 3. A sleeve 21 for fixing the valve plate shaft 3 slides on the outer side of the quadrangular prism 20, and the other end of the sleeve 21 is fixed to the handle 4. This arrangement allows the handle 4 and the sleeve 21 to slide up and down while ensuring control of the valve plate 2. A limiting block 22 for fixing the valve plate 2 is installed on the outer side of the sleeve 21. A limiting groove 23 for locking the limiting block 22 is opened at the top of the valve body 1, and the limiting block 22 and the limiting groove 23 correspond vertically. This arrangement allows the valve plate 2 to be locked after the valve plate 2 is locked, by pressing down the sleeve 21 and the limiting groove 23. The positioning block 22 is engaged with the limiting groove 23 by the limiting block 22, thereby fixing the valve plate 2 and ensuring the sealing effect. The lower side of the sleeve 21 is provided with a second compression spring 24 for driving the limiting block 22 to move upward. The second compression spring 24 is sleeved on the outside of the quadrangular prism 20. This setting facilitates the sliding removal of the limiting block 22. A connecting shaft 25 is installed on the outside of the valve body 1. A baffle 26 for fixing the limiting block 22 is rotatably mounted on the outside of the connecting shaft 25. This setting allows the baffle 26 to be rotated to block the upper side of the limiting block 22 when the limiting block 22 is installed, thereby ensuring the stability of the valve plate 2 during sealing use.

[0019] An operating method for a wellhead valve used for regulating oil and gas flow includes the following steps: Step 1: Pre-adjusting the flow rate: First, lift the handle 4 upwards, and then drive the limit block 22 to disengage from the limit groove 23 through the sleeve 21. At this time, the second compression spring 24 can not only push the thrust, making it easy for personnel to use, but also continuously provide the limit block 22 with the force to move away from the limit groove 23. Then, turn the handle 4, and drive the valve plate 2 to rotate through the sleeve 21, the square prism 20 and the valve plate shaft 3, thereby opening the valve body 1 so that the medium can flow. At this time, by adjusting the rotation angle of the valve plate 2, the effect of adjusting the flow rate can be achieved. Step 2: Pressure Control Compensation: Then tighten the fixing screw 18. When the medium flow rate under the pressure plate 9 is relatively fast, the force of the medium on the pressure plate 9 also increases, which in turn pushes the pressure plate 9 through the diaphragm ring 10, thereby driving the vertical rod 12 and the slider 15 to move upward. During the movement of the slider 15, the vertical cylinder 16 and the vertical rod 12 rotate through the spiral groove 17, which in turn drives the drive pulley 7 to rotate. Then the drive pulley 7 drives the driven pulley 5 to rotate through the transmission belt 6, which in turn drives the valve plate shaft 3 and the valve plate 2 to rotate, thereby changing the angle of the valve plate 2, thereby reducing the cross-sectional area of ​​the medium, thus achieving the effect of overall flow control stability. Conversely, when the medium flow rate is relatively slow, the cross-sectional area can be automatically increased, thereby also controlling the flow stability.

[0020] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A wellhead valve for regulating oil and gas flow, comprising a valve body (1) and a valve plate (2), characterized in that: A valve plate (2) for sealing the valve body (1) is installed on the inner side of the valve body (1), a valve plate shaft (3) for controlling the rotation of the valve plate (2) is installed on one side of the valve plate (2), and a handle (4) for controlling the rotation of the valve plate shaft (3) is installed on one side of the valve plate shaft (3). A driven pulley (5) for rotating the valve plate shaft (3) is installed on the outer side of the valve plate shaft (3). A transmission belt (6) for rotating the driven pulley (5) is installed on the outer side of the driven pulley (5). A driving pulley (7) for rotating the transmission belt (6) is installed on the other side of the transmission belt (6). A vertical shaft (8) for controlling the rotation of the driving pulley (7) is installed on the inner side of the driving pulley (7). A pressure plate (9) for rotating the vertical shaft (8) is provided on one side of the vertical shaft (8). A diaphragm ring (10) for controlling the movement of the pressure plate (9) is installed on the outer side of the pressure plate (9). A connecting ring (11) for ensuring internal sealing is installed on the other side of the diaphragm ring (10). A connecting ring (11) for ensuring internal sealing is installed on one side of the pressure plate (9). The vertical rod (12) is used for transmission. A first compression spring (13) for driving the pressure plate (9) to reset is installed on the outside of the vertical rod (12). A connecting plate (14) for ensuring the stable use of the first compression spring (13) is installed on the other side of the first compression spring (13). A slider (15) for driving the vertical shaft (8) to rotate is installed on the other end of the vertical rod (12). A vertical cylinder (16) is installed on one side of the slider (15) and the vertical cylinder (16) is installed on the outside of the vertical rod (12). A spiral groove (17) for installing the slider (15) is installed on the outside of the vertical cylinder (16) and a fixing screw (18) for connecting and fixing the vertical cylinder (16) and the vertical rod (12) is installed on the outside of the vertical cylinder (16).

2. A wellhead valve for regulating oil and gas flow rate according to claim 1, characterized in that: The outer sides of the drive pulley (7), slider (15) and vertical cylinder (16) are provided with protective covers (19), and the outer side of the protective cover (19) is connected to the valve body (1).

3. A wellhead valve for regulating oil and gas flow rate according to claim 2, characterized in that: The top end of the valve plate shaft (3) is equipped with a quadrangular prism (20) for connecting the handle (4). A sleeve (21) for fixing the valve plate shaft (3) is slidably attached to the outside of the quadrangular prism (20), and the other end of the sleeve (21) is fixed to the handle (4).

4. A wellhead valve for regulating oil and gas flow rate according to claim 3, characterized in that: The sleeve (21) is equipped with a limiting block (22) for fixing the valve plate (2). The valve body (1) has a limiting groove (23) for locking the limiting block (22) at the top, and the limiting block (22) and the limiting groove (23) are vertically aligned.

5. A wellhead valve for regulating oil and gas flow rate according to claim 4, characterized in that: The lower side of the sleeve (21) is provided with a second compression spring (24) for driving the limiting block (22) to move upward. The second compression spring (24) is sleeved on the outside of the quadrangular prism (20).

6. A wellhead valve for regulating oil and gas flow rate according to claim 5, characterized in that: A connecting shaft (25) is installed on the outside of the valve body (1), and a baffle (26) for fixing the limiting block (22) is rotatably mounted on the outside of the connecting shaft (25).

7. An operating method for a wellhead valve for regulating oil and gas flow as described in claim 6, characterized in that: Includes the following steps: Step 1: Pre-adjust flow rate: First, lift the handle (4) upwards, and then drive the limit block (22) to disengage from the limit groove (23) through the sleeve (21). At this time, the second compression spring (24) can not only push the thrust, making it easy for personnel to use, but also continuously provide the force for the limit block (22) to move away from the limit groove (23). Then, turn the handle (4), and drive the valve plate (2) to rotate through the sleeve (21), the square prism (20) and the valve plate shaft (3), thereby opening the valve body (1) so that the medium can flow. At this time, by adjusting the angle of rotation of the valve plate (2), the effect of adjusting the flow rate can be achieved. Step 2: Pressure control compensation: Then tighten the fixing screw (18). When the medium flow rate on the lower side of the pressure plate (9) is relatively fast, the force of the medium on the pressure plate (9) also increases. Then, the pressure plate (9) is pushed by the diaphragm ring (10), which in turn drives the vertical rod (12) and the slider (15) to move upward. During the movement of the slider (15), the vertical cylinder (16) and the vertical rod (12) are rotated by the action of the spiral groove (17), which in turn drives the active pulley (7) to rotate. Then, the active pulley (7) drives the driven pulley (5) to rotate through the transmission belt (6), which in turn drives the valve plate shaft (3) and the valve plate (2) to rotate, thereby changing the angle of the valve plate (2) and reducing the cross-sectional area of ​​the medium, thereby achieving the effect of overall flow control stability. Conversely, when the medium flow rate is relatively slow, the cross-sectional area can be automatically increased, which can also control the flow stability.

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