Anti-hydrogen sulfide double-ball integrated top drive plug valve

Abstract

The utility model belongs to the stopcock valve technical field especially relates to a kind of anti-sulfur hydrogen double-ball integrated top drive stopcock valve, including stopcock valve body, the threaded connection end being set at the bottom end of stopcock valve body and the upper valve seat being set on the upper end of stopcock valve body, the hand wheel is installed in the top end of the upper valve seat, multiple groups of positioning holes are set in the hand wheel, the side sleeve seat is installed in the both sides of the upper valve seat. By installing the positioning rod that can be lifted in the both sides of stopcock valve body, positioning rod can be inserted into the positioning hole inside on hand wheel, to limit hand wheel rotation, prevent external error touch, and let reset spring provide automatic rebound force, ensure that positioning rod is always inside positioning hole in non-operation state, and pull ring needs manpower to pull down to be able to be unlocked, double security, completely solve the problem of hand wheel error rotation caused by personnel movement or equipment collision of drilling platform, avoid the blowout risk caused by drilling fluid out of control, improve the safety of equipment.

Description

Technical Field

[0001] This utility model relates to the field of plug valve technology, and in particular to a hydrogen sulfide-resistant double-ball integrated top-drive plug valve. Background Technology

[0002] The hydrogen sulfide-resistant double-ball integrated top-drive plug valve is a key piece of equipment used in the oil drilling field. It is mainly used in drilling sulfur-containing oil and gas fields to control fluid flow within the drill string and prevent safety accidents such as blowouts. While existing hydrogen sulfide-resistant double-ball integrated top-drive plug valves generally meet daily usage requirements, some shortcomings still require improvement. Hydrogen sulfide-resistant dual-ball integrated top-drive plug valves typically have a handwheel at the top for manual control. This allows operators to quickly adjust the valve's status manually in case of automation system failures or special operating conditions. However, this handwheel has an open design and is completely exposed to the working environment. On drilling platforms with dense personnel and equipment, frequent personnel movement and equipment handling can easily lead to accidental contact with the handwheel. Once the handwheel is accidentally turned, the plug valve may open or close unexpectedly, causing uncontrolled drilling fluid flow. This can result in decreased drilling efficiency and increased costs, or even trigger well control risks and major safety accidents, posing a significant safety hazard. Therefore, we propose a hydrogen sulfide-resistant dual-ball integrated top-drive plug valve to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to provide a hydrogen sulfide-resistant, dual-ball integrated top-drive plug valve to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a hydrogen sulfide-resistant double-ball integrated top-drive plug valve, comprising a plug valve body, a threaded connection end disposed at the bottom of the plug valve body, and an upper valve seat disposed at the upper end of the plug valve body. A handwheel is installed at the top of the upper valve seat, and multiple sets of positioning holes are equally spaced on the handwheel. Side sleeves are installed on both sides of the upper valve seat, and guide rods are installed inside both sets of side sleeves. Movable plates are slidably connected to the outside of both sets of guide rods. Two sets of positioning rods are installed at the top of the movable plates, and the tops of the positioning rods are embedded in the positioning holes on the handwheel. The opposite ends of the two sets of movable plates are connected to a pull ring through a connecting seat. Return springs are wound around the outside of the guide rods, and auxiliary positioning components are provided on both sides of the pull ring.

[0005] As an improved technical solution, the auxiliary positioning component includes rotating seats installed at the bottom of both sides of the pull ring. A rotating plate is rotatably connected inside each of the two sets of rotating seats. A locking tooth is provided at the bottom end of each rotating plate. Locking seats are installed on both sides of the upper valve seat. Locking holes are provided at the bottom ends of both sets of locking seats.

[0006] As an improved technical solution, the top of the positioning rod is conical, and the diameter of the positioning rod is the same as the inner diameter of the positioning hole.

[0007] As an improved technical solution, the movable plate has a sliding hole in the middle that matches the guide rod, and the outer wall of the movable plate is fully fitted with the inside of the side sleeve.

[0008] As an improved technical solution, the two ends of the return spring are respectively connected to the outer wall of the bottom end of the movable plate and the bottom end of the inner wall of the side sleeve, and the movable plate is elastically connected to the bottom end of the inner wall of the side sleeve through the return spring.

[0009] As an improved technical solution, the bottom teeth of the two sets of rotating plates are equipped with protrusions that are adapted to the lock holes.

[0010] As an improved technical solution, the valve body of the plug valve is provided with two spherical plug cores connected in series.

[0011] After adopting the above technical solution, the beneficial effects of this utility model are: I. This utility model features liftable positioning rods installed on both sides of the valve body of the plug valve. These positioning rods can be inserted into the positioning holes on the handwheel, thereby restricting the rotation of the handwheel, preventing accidental external contact, and allowing the return spring to provide automatic rebound force to ensure that the positioning rods are always inside the positioning holes when not in operation. The pull ring requires manual pulling to unlock, providing double protection for safety. This completely solves the problem of accidental handwheel rotation caused by personnel movement or equipment collisions on drilling platforms, avoids the risk of blowouts caused by uncontrolled drilling fluid, and improves equipment safety.

[0012] II. This utility model has two sets of rotatable rotating plates installed at the bottom of the pull ring. When the pull ring drives the two sets of rotating plates to descend and rotates the plates, the two sets of locking teeth move into the lock holes on the two sets of lock seats. This allows the locking teeth at the bottom of the two sets of rotating plates to effectively engage with the lock holes on the two sets of lock seats, thus limiting the height of the pull ring. As a result, there is no need to manually support the pull ring when turning the handwheel, which improves the convenience of using the device. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a bottom view of the structure of this utility model; Figure 3 This is a partial cross-sectional structural diagram of the present invention; Figure 4 For the present utility model Figure 2 A magnified structural diagram at point A; Figure 5 For the present utility model Figure 3 A magnified structural diagram at point B.

[0014] In the diagram: 1. Plug valve body; 2. Threaded connection end; 3. Upper valve seat; 4. Handwheel; 5. Positioning hole; 6. Side sleeve seat; 7. Guide rod; 8. Movable plate; 9. Positioning rod; 10. Connecting seat; 11. Pull ring; 12. Return spring; 13. Rotary seat; 14. Rotary plate; 15. Clamping teeth; 16. Lock seat; 17. Lock hole. Detailed Implementation

[0015] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0016] This utility model provides a technical solution: such as Figures 1 to 5 As shown in this embodiment, a hydrogen sulfide-resistant double-ball integrated top-drive plug valve includes a plug valve body 1, a threaded connection end 2 at the bottom of the plug valve body 1, and an upper valve seat 3 at the top of the plug valve body 1. A handwheel 4 is installed on the top of the upper valve seat 3. Multiple sets of positioning holes 5 are equally spaced on the handwheel 4. Side sleeves 6 are installed on both sides of the upper valve seat 3. Guide rods 7 are installed inside both sets of side sleeves 6. Movable plates 8 are slidably connected to the outside of both sets of guide rods 7. Two sets of positioning rods 9 are installed on the top of the movable plates 8. The tops of the positioning rods 9 are embedded in the positioning holes 5 on the handwheel 4. The opposite ends of the two sets of movable plates 8 are connected to the pull ring 11 through connecting seats 10. Return springs 12 are wound around the outside of the guide rods 7. Auxiliary positioning components are provided on both sides of the pull ring 11.

[0017] By installing liftable positioning rods 9 on both sides of the valve body 1 of the plug valve, the positioning rods 9 can be inserted into the positioning holes 5 on the handwheel 4, thereby restricting the rotation of the handwheel 4, preventing accidental external contact, and allowing the return spring 12 to provide automatic rebound force to ensure that the positioning rods 9 are always inside the positioning holes 5 when not in operation. The pull ring 11 needs to be pulled down manually to unlock, providing double protection for safety. This completely solves the problem of accidental rotation of the handwheel 4 caused by personnel movement or equipment collisions on the drilling platform, avoids the risk of blowout caused by uncontrolled drilling fluid, and improves the safety of the equipment.

[0018] In other embodiments, the auxiliary positioning component includes a rotating seat 13 installed at the bottom of both sides of the pull ring 11, a rotating plate 14 rotatably connected in both rotating seats 13, a locking tooth 15 provided at the bottom of the rotating plate 14, a locking seat 16 installed on both sides of the upper valve seat 3, and a locking hole 17 opened at the bottom of both locking seats 16. By installing two sets of rotatable rotating plates 14 at the bottom of the pull ring 11, when the pull ring 11 drives the two sets of rotating plates 14 to descend, the pull ring 11 also drives the positioning rods 9 on the two sets of movable plates 8 to descend. When the locking teeth 15 at the bottom of the two sets of rotating plates 14 descend to the bottom of the lock seat 16, the rotating plates 14 can then be rotated to move the two sets of locking teeth 15 into the lock holes 17 on the two sets of lock seats 16. This allows the two sets of return springs 12 to release their elasticity and push the two sets of movable plates 8 to rise. This allows the locking teeth 15 at the bottom of the two sets of rotating plates 14 to effectively embed into the lock holes 17 on the two sets of lock seats 16, thus limiting the height of the pull ring 11. As a result, there is no need to manually support the pull ring 11 during the rotation of the handwheel 4, thereby improving the convenience of using the device.

[0019] In other embodiments, the top of the positioning rod 9 is conical, and the diameter of the positioning rod 9 is the same as the inner diameter of the positioning hole 5. This design allows the cone at the top of the positioning rod 9 to automatically guide and correct its position when inserted into the positioning hole 5, improving assembly accuracy, reducing component wear, and extending service life.

[0020] In other embodiments, the movable plate 8 has a sliding hole in the middle that is adapted to the guide rod 7, and the outer wall of the movable plate 8 is fully fitted with the inside of the side sleeve 6; This design allows the movable plate 8 to rise and fall smoothly and quickly along the inside of the side sleeve 6, thereby improving the stability of the movable plate 8 when it moves.

[0021] In other embodiments, the two ends of the return spring 12 are respectively connected to the outer wall of the bottom end of the movable plate 8 and the bottom end of the inner wall of the side sleeve 6, and the movable plate 8 is elastically connected to the bottom end of the inner wall of the side sleeve 6 through the return spring 12; This design allows the return springs 12 outside the two sets of guide rods 7 to continuously apply an upward elastic force to the two sets of movable plates 8, enabling the two sets of movable plates 8 to drive the two sets of positioning rods 9 on them to quickly insert into the positioning holes 5 on the handwheel 4.

[0022] In other embodiments, protrusions adapted to lock holes 17 are installed on the locking teeth 15 at the bottom of the two sets of rotating plates 14. With this design, when the two sets of pull rings 11 drive the two sets of rotating plates 14 to move downwards, the two sets of rotating plates 14 can drive the protrusions on the two sets of locking teeth 15 to embed into the lock holes 17 at the bottom of the lock seat 16, preventing the two sets of locking teeth 15 from accidentally disengaging from the lock holes 17 on the two sets of lock seats 16.

[0023] In other embodiments, the valve body 1 of the plug valve is provided with a double spherical plug core connected in series. This design allows the double-ball structure to provide a dual sealing barrier, ensuring that the downstream ball can still seal even if the upstream ball fails, thereby significantly improving the valve's sealing reliability and erosion resistance under high-pressure, sulfur-containing conditions.

[0024] This utility model provides a hydrogen sulfide-resistant, dual-ball integrated top-drive plug valve, the specific working principle of which is as follows: When it is necessary to turn the handwheel 4, pull the pull ring 11 downwards. The pull ring 11 will drive the two sets of movable plates 8 to move downwards along the guide rod 7, allowing the two sets of positioning rods 9 on the movable plate 8 to quickly disengage from the positioning holes 5 on the handwheel 4. Then the handwheel 4 can be turned normally. When the positioning hole 5 is in the closed position, the pulling force on the pull ring 11 can be released, allowing the return springs 12 outside the two sets of guide rods 7 to release their elasticity and push the movable plate 8 upwards. This allows the movable plate 8 to drive the two sets of positioning rods 9 on it to insert into the corresponding positioning holes 5 on the handwheel 4. The operation is then complete.

[0025] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A hydrogen sulfide resistant dual ball integrated top drive plug valve, comprising a plug valve body (1), a threaded connection end (2) arranged at the bottom end of the plug valve body (1), and an upper valve seat (3) arranged at the upper end of the plug valve body (1), wherein a hand wheel (4) is arranged at the top end of the upper valve seat (3), characterized in that: The handwheel (4) has multiple sets of positioning holes (5) at equal intervals. The upper valve seat (3) has side sleeves (6) installed on both sides. The two sets of side sleeves (6) have guide rods (7) installed inside. The two sets of guide rods (7) are slidably connected to movable plates (8). The top of the movable plates (8) has two sets of positioning rods (9). The top of the positioning rods (9) is embedded in the positioning holes (5) on the handwheel (4). The opposite ends of the two sets of movable plates (8) are connected to the pull ring (11) through connecting seats (10). The guide rods (7) are wrapped with return springs (12). The pull ring (11) has auxiliary positioning components on both sides. The auxiliary positioning component includes a rotating seat (13) installed at the bottom of both sides of the pull ring (11). A rotating plate (14) is rotatably connected in both sets of rotating seats (13). A locking tooth (15) is provided at the bottom of each rotating plate (14). Locking seats (16) are installed on both sides of the upper valve seat (3). Locking holes (17) are opened at the bottom of both sets of locking seats (16).

2. The anti-hydrogen sulfide double-sphere integrated top drive plug valve according to claim 1, characterized in that: The top of the positioning rod (9) is conical, and the diameter of the positioning rod (9) is the same as the inner diameter of the positioning hole (5).

3. The anti-hydrogen sulfide double-sphere integrated top drive plug valve according to claim 1, characterized in that: The movable plate (8) has a sliding hole in the middle that is compatible with the guide rod (7), and the outer wall of the movable plate (8) is fully fitted with the inside of the side sleeve (6).

4. The anti-hydrogen sulfide double-sphere integrated top drive plug valve according to claim 1, characterized in that: The two ends of the reset spring (12) are respectively connected to the bottom outer wall of the movable plate (8) and the bottom inner wall of the side sleeve (6). The movable plate (8) is elastically connected to the bottom inner wall of the side sleeve (6) through the reset spring (12).

5. The anti-hydrogen sulfide double-sphere integrated top drive plug valve according to claim 1, characterized in that: The two sets of rotating plates (14) have protrusions on the bottom teeth (15) that are adapted to the lock holes (17).

6. The hydrogen sulfide-resistant double-ball integrated top-drive plug valve according to claim 1, characterized in that: The valve body (1) of the plug valve is provided with a double spherical plug core connected in series.

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