Flange face piercing leakage plugging device

Abstract

The utility model provides a flange face leakage plugging device, and belongs to emergency rescue equipment for oil field engineering. Comprising a connecting frame, a rack, a fixing device, a power device and a fastening device, the rack is movably connected with the connecting frame, and the connecting frame horizontally moves along the rack; the fixing device is arranged on the inner side of the rack; the fixing device comprises a fixed slip and a movable slip which are oppositely arranged, the side, away from the fixed slip, of the movable slip is connected with the power device, the fastening device is arranged on the fixed slip, and the side, away from the movable slip, of the fixed slip is connected with a drainage tube. According to the utility model, the target flange can be effectively sealed, accurate centering is realized, the emergency rescue efficiency is higher, the operation is more convenient and labor-saving, the disposal efficiency in emergency is greatly improved, an effective channel is established for well killing, the risk that rescue workers suffer from secondary disasters is effectively reduced, and the safety of rescue workers is ensured.

Description

Technical Field

[0001] The utility model relates to emergency rescue equipment for oilfield engineering, and particularly to a flange surface leakage plugging device. Background Art

[0002] During long-term operation, the steel ring connecting the two ends of the flange at the wellhead of the Christmas tree corrodes, resulting in seal failure and leakage of high-pressure liquid in the well. When dealing with the emergency of flange leakage at the oil and gas wellhead, it is crucial to accelerate the emergency rescue operation, control the dangerous situation as early as possible, and reduce losses. Currently, engineering technicians often use tools such as nylon slings, palm ropes, steel wires, clamps, and screw jack plugging to wind and seal or reinforce the leakage part. Although these methods can temporarily control the leakage point in specific situations with small leakage volume and low pressure, they usually involve cumbersome steps and require rescue personnel to approach the potentially dangerous wellhead repeatedly, which not only increases the safety risk of personnel but also makes it difficult to safely, quickly, and effectively control the leakage point of the target flange in the case of large liquid leakage volume and high pressure. In order to improve the safety and efficiency of emergency rescue operations, more advanced emergency rescue technologies and strategies are needed. An ideal solution should be able to quickly plug the leakage point while ensuring the safety of personnel, control the external leakage volume, and establish a kill well channel to lay the foundation for the next kill well operation, thereby minimizing the loss of oil and gas resources and the risk of environmental pollution. Summary of the Utility Model

[0003] Aiming at the problems existing in the above-mentioned prior art, the utility model provides a flange surface leakage plugging device. The purpose of the utility model is to effectively seal the target flange, achieve precise centering, have higher rescue efficiency, be more convenient and labor-saving in operation, greatly improve the disposal efficiency in emergency situations, and also establish an effective channel for kill well, effectively reducing the risk of secondary disasters suffered by rescue personnel and ensuring the safety of emergency rescue personnel.

[0004] To solve the above technical problems, the utility model provides a flange surface leakage plugging device, which includes a connecting frame, a frame, a fixing device, a power device, and a fastening device; the frame is movably connected with the connecting frame, and the connecting frame moves horizontally along the frame; the fixing device is arranged inside the frame;

[0005] The fixing device includes a fixed slip and a movable slip arranged oppositely. One side of the movable slip away from the fixed slip is connected with the power device, and a drainage pipe is connected to one side of the fixed slip away from the movable slip. The fastening device is arranged on the fixed slip and the frame on the side where the fixed slip is located. When the movable slip and the fixed slip hold the target flange tightly, the fastening device fixedly connects the fixed slip and the movable slip with the frame.

[0006] Furthermore, a first upright post and a second upright post are vertically arranged on the upper surface of the connecting frame; a cavity is arranged at the bottom of the frame, a cross bar is arranged in the cavity, the cross bar penetrates through both ends of the first upright post, the second upright post and the cavity, and the first upright post and the second upright post can horizontally move along the cross bar.

[0007] Furthermore, in the cavity, spring seats are sleeved on the cross bar portions on both sides of the first upright post and the second upright post. During the process of the movable slip and the fixed slip centering on the target flange, the spring seats float left and right to accurately center the target flange.

[0008] Furthermore, the fastening device includes a fastening screw rod and a bolt. The fastening screw rod is arranged at the upper end and the lower end of the frame on the side where the fixed slip is located; the fastening screw rod sequentially passes through the side wall of the frame on the side where the fixed slip is located and the fixed slip, and the fastening screw rod makes the fixed slip and the movable slip fixedly connected to the frame through the bolt. A screw hole matched with the fastening screw rod is arranged at the corresponding position on the movable slip.

[0009] Furthermore, the drain pipe is connected to the fixed slip through an extension pipe, and a stop valve is arranged between the extension pipe and the drain pipe.

[0010] Furthermore, sealing gaskets are arranged on the inner sides of the fixed slip and the movable slip.

[0011] Furthermore, the power device is a hydraulic cylinder.

[0012] The flange surface leak plugging device of the present utility model has at least the following beneficial effects:

[0013] By using the movable slip and the fixed slip to tightly hold the leaking flange surface, the target flange can be effectively sealed;

[0014] By arranging spring seats on both sides in the cavity of the frame, when the connecting frame can move left and right during the emergency repair process of the plugging device, due to the elastic force of the spring, it has a certain floating function to meet the centering requirement;

[0015] By arranging an extension pipe, a stop valve and a drain pipe which are sequentially communicated on the fixed slip, the high-pressure liquid in the pressure cavity can be discharged through the drain pipe, the distance of the high-pressure liquid drainage can be longer, the splashing of the high-pressure liquid can be prevented, the flow rate of the leaking liquid can be controlled, the safety of the operators can be ensured, and an effective channel for well killing can be established;

[0016] By arranging the fastening screw rod and the bolt, the fixed slip and the movable slip can be fixedly connected to the frame. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of a flange surface puncture leakage blocking device according to an embodiment of the present utility model.

[0018] In the figure: 1. Hydraulic cylinder, 2. Frame, 3. Movable chuck, 4. Tightening screw, 5. Fixed chuck, 6. Extension pipe, 7. Stop valve, 8. Drainage pipe, 9. Bolt, 10. Connecting frame, 11. Sealing gasket, 12. Spring seat; 13. Cross bar. Specific embodiments

[0019] To make the purpose, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present utility model.

[0020] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model claimed, but merely represents selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present utility model.

[0021] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0022] In the present utility model, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] To better understand the purpose, structure and function of the present utility model, the following further details a flange surface puncture leakage blocking device of the present utility model in conjunction with the accompanying drawings.

[0024] Embodiment 1

[0025] As Figure 1As shown in the figure, a flange surface puncture leakage blocking device of the present utility model includes a connecting frame 10, a frame 2, a fixing device, a power device and a fastening device; the frame 2 is movably connected to the connecting frame 10, and the connecting frame 10 moves horizontally along the frame 2; the fixing device is arranged inside the frame 2;

[0026] The fixing device includes a fixed chuck 5 and a movable chuck 3 which are arranged oppositely. One side of the movable chuck 3 away from the fixed chuck 5 is connected to the power device. A drainage pipe 8 is connected to one side of the fixed chuck 5 away from the movable chuck 3. The fastening device is arranged on the frame 2 on the side where the fixed chuck 5 is located. When the movable chuck 3 and the fixed chuck 5 hold the target flange tightly, the fastening device fixedly connects the fixed chuck 5 and the movable chuck 3 to the frame 2.

[0027] Embodiment 2

[0028] As Figure 1 As shown in the figure, a flange surface puncture leakage blocking device of the present utility model includes a connecting frame 10, a frame 2, a fixing device, a power device and a fastening device; the frame 2 is movably connected to the connecting frame 10, and the connecting frame 10 moves horizontally along the frame 2; the fixing device is arranged inside the frame 2;

[0029] The fixing device includes a fixed chuck 5 and a movable chuck 3 which are arranged oppositely. One side of the movable chuck 3 away from the fixed chuck 5 is connected to the power device. A drainage pipe 8 is connected to one side of the fixed chuck 5 away from the movable chuck 3. The fastening device is arranged on the frame 2 on the side where the fixed chuck 5 is located. When the movable chuck 3 and the fixed chuck 5 hold the target flange tightly, the fastening device fixedly connects the fixed chuck 5 and the movable chuck 3 to the frame 2.

[0030] The difference between this embodiment and Embodiment 1 is that:

[0031] As Figure 1 As shown in the figure, a first vertical column and a second vertical column are vertically arranged on the upper surface of the connecting frame 10; a cavity is arranged at the bottom of the frame 2, a cross bar 13 is arranged inside the cavity, the cross bar 13 penetrates through both ends of the first vertical column, the second vertical column and the cavity, and the first vertical column and the second vertical column can move horizontally along the cross bar 13;

[0032] In the cavity, the crossbar portions on both sides of the first column and the second column are sleeved with spring seats 12. When the movable slips 3 and the fixed slips 5 are centered on the target flange, the spring seats 12 can float left and right due to the elastic force, thereby accurately aligning the target flange. When an alignment error occurs between the target flange and the movable slips 3 and the fixed slips 5, the alignment gap can be adjusted in time to achieve alignment and clamping of the target flange, the movable slips 3 and the fixed slips 5, and then a new pressure chamber is formed between the circumferential surface of the target flange and the movable slips 3 and the fixed slips 5.

[0033] The fastening device includes a fastening screw 4 and a bolt 9. The fastening screw 4 is arranged at the upper and lower ends of the frame 2 on the side where the fixed slip 5 is located; the fastening screw 4 sequentially passes through the side wall of the frame 2 on the side where the fixed slip 5 is located and the fixed slip 5, and the corresponding position of the movable slip 3 is provided with a screw hole that cooperates with the fastening screw 4; the fastening screw 4 fixes the fixed slip 5 and the movable slip to the frame 2 through the bolt 9. After the movable slip 3 and the fixed slip 5 are tightly embraced, the bolt 9 is tightened to fix and lock the movable slip 3, the fixed slip 5 and the frame 2 to each other;

[0034] The drainage pipe 8 is connected to the fixed slip 5 through an extension pipe 6. A stop valve 7 is provided between the extension pipe 6 and the drainage pipe 8. Liquid can flow into the valve body through the extension pipe 6 and then be discharged through the drainage pipe 8. The extension pipe 6 is used to extend the drainage distance of the liquid to prevent liquid splashing and injuring staff; the stop valve 7 is used to control the flow rate of the leaking liquid; the inner sides of the fixed slip 5 and the movable slip 3 are both provided with a sealing gasket 11, which can seal the target flange;

[0035] The power device is a hydraulic cylinder 1, which can move the movable slips 3 through a remote hydraulic control system.

[0036] like Figure 1As shown in the figure, a flange surface leak plugging device of the present utility model has the following working process: The plugging device is connected to the long-arm conveying device through the connecting frame 10 and is operated by a remote control system. The plugging device is moved close to the wellhead, and the centers of the movable slip 3 and the fixed slip 5 are aligned with the leaking flange surface. The operator operates the hydraulic cylinder 1 to move the movable slip 3 towards the fixed slip 5, so that the movable slip 3 and the fixed slip 5 clamp the leaking flange. When there is an alignment error between the leaking flange and the movable slip 3 and the fixed slip 5, the spring seat 12 is used to float left and right to adjust the alignment gap, so that the leaking flange is aligned and clamped with the movable slip 3 and the fixed slip 5. After that, a new pressure chamber is formed between the circumferential surface of the leaking flange and the movable slip 3 and the fixed slip 5. When the amount of liquid leaking from the pressure chamber is large, the liquid can be discharged through the drainage pipe 8, ensuring the safety of the operators. After the movable slip 3 and the fixed slip 5 are clamped, the fastening screw 4 is inserted into the corresponding screw hole on the movable slip 3, and then the bolt 9 is tightened to lock the movable slip 3, the fixed slip 5 and the frame 2 to each other, and then the stop valve 7 on the drainage pipe 8 is closed.

[0037] The parts not described in detail in the present utility model are prior art, and their internal structures will not be described in detail one by one here.

[0038] Although various embodiments of the present utility model have been described in detail herein, it should be understood that the present utility model is not limited to the specific embodiments described and shown in detail here. Other variations and modifications can be implemented by those skilled in the art without departing from the essence and scope of the present utility model. All such variations and modifications fall within the scope of the present utility model. Moreover, all the components described herein can be replaced by other technically equivalent components.

Claims

1. A flange surface leakage plugging device, characterized in that It includes a connecting frame, a frame, a fixing device, a power device and a fastening device; the frame is movably connected to the connecting frame, and the connecting frame moves horizontally along the frame; the fixing device is arranged inside the frame; The fixing device includes a fixed jaw and a movable jaw arranged oppositely. One side of the movable jaw away from the fixed jaw is connected to the power device. A drainage pipe is connected to one side of the fixed jaw away from the movable jaw. The fastening device is arranged on the frame on the side where the fixed jaw is located. When the movable jaw and the fixed jaw clamp the target flange, the fastening device fixedly connects the fixed jaw, the movable jaw and the frame.

2. The flange surface leakage plugging device according to claim 1, characterized in that A first vertical column and a second vertical column are vertically arranged on the upper surface of the connecting frame; a cavity is arranged at the bottom of the frame, a cross bar is arranged inside the cavity, the cross bar penetrates through both ends of the first vertical column, the second vertical column and the cavity, and the first vertical column and the second vertical column move horizontally along the cross bar.

3. The flange surface puncture leakage blocking device according to claim 2, wherein, Inside the cavity, spring seats are sleeved on the cross bar parts on both sides of the first vertical column and the second vertical column. During the process of centering the target flange by the movable jaw and the fixed jaw, the spring seats float left and right to center the target flange.

4. The flange surface puncture leakage blocking device according to claim 1, characterized in that, The fastening device includes a fastening screw rod and a bolt. The fastening screw rod is arranged at the upper end and the lower end of the frame on the side where the fixed jaw is located; the fastening screw rod sequentially penetrates through the side wall of the frame on the side where the fixed jaw is located and the fixed jaw, and the fastening screw rod fixedly connects the fixed jaw, the movable jaw and the frame through the bolt, and screw holes matching the fastening screw rod are arranged at corresponding positions on the movable jaw.

5. The flange surface leakage plugging device according to claim 1, characterized in that The drainage pipe is connected to the fixed jaw through an extension pipe, and a stop valve is arranged between the extension pipe and the drainage pipe.

6. The flange surface puncture leakage blocking device according to any one of claims 1 to 5, characterized in that Sealing gaskets are arranged on the inner sides of the fixed jaw and the movable jaw.

7. The flange surface puncture leakage plugging device according to any one of claims 1 to 5, characterized in that, The power device is a hydraulic cylinder.

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