A leak stoppage device for a well delivery conduit

Abstract

The utility model relates to a pipeline leak stoppage technical field, concretely relates to an oil production well conveying pipeline leak stoppage device. Including the support of inverted U shape, the straight portion on the top of support installs extrusion subassembly, and the lower end rotationally connected of extrusion subassembly has the pressure plate, and the straight portion below the support is fixed with the support block, and the arc leak stoppage board is inserted into the support block upper end, and the inner edge of leak stoppage board is provided with sealing assembly, and the pipeline is located between leak stoppage board and pressure plate, and the upper recess and the lower recess are set up respectively in the middle part of support block upper end and the middle part of pressure plate lower end, and the steel band is penetrated through the upper recess and the lower recess, and leak stoppage board is located between steel band and pipeline. The device adopts pure mechanical assembly, and the whole leak stoppage process is completed through manual operation. This eliminates the dependence on electricity or complex equipment, especially suitable for remote oil fields, field environment or emergency scene, ensures the flexibility and reliability of leak stoppage operation.

Description

Technical Field

[0001] This utility model relates to the field of pipeline sealing technology, specifically to a sealing device for oil well delivery pipelines. Background Technology

[0002] Currently, when a crude oil pipeline experiences a perforation, two main methods are used for perforation repair. One method is to close the upstream gate valve to stop crude oil transportation and then perform perforation plugging operations. This method requires suspending crude oil transportation, which affects normal crude oil transportation. The other method is to use some special plugging devices to directly perform perforation plugging without closing the valve.

[0003] For example, Chinese patent CN202791142U discloses a perforation sealing device for oil pipelines. This device uses left and right slips to press the sealing gasket tightly at the perforation of the pipeline to achieve perforation sealing. However, during operation, crude oil is easily splashed onto the workers, resulting in a deterioration of the working environment. At the same time, the left and right slips are connected by a bolt group. Because the bolts are detachable, this sealing device is easily damaged by human intervention.

[0004] To address the aforementioned issues, patent document CN207073674U discloses a perforation and leak-sealing device for crude oil transportation pipelines. This device can quickly perform pipeline perforation and leak-sealing operations without halting crude oil transportation, thus ensuring normal crude oil transport. During operation, one end of a flexible hose is first fitted onto the upper part of the oil guide pipe. Then, an arc-shaped plate is quickly clamped at the perforation. At this point, the crude oil sprayed through the perforation flows through the oil guide pipe and flexible hose into the oil storage tank, preventing crude oil from splashing onto workers and improving hygiene conditions during the leak-sealing process. After using a positioning device to press the leak-sealing component firmly against the pipeline wall, the arc-shaped plate is welded to the pipeline wall. However, this device requires welding to fix the arc-shaped plate to the pipeline during the leak-sealing process, which is inconvenient for field operations as it requires a power supply to the welding machine. Utility Model Content

[0005] The main purpose of this utility model is to provide an oil well pipeline leak sealing device that is easy to operate and suitable for sealing pipelines in environments without power.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows: A leak-sealing device for an oil well pipeline includes an inverted U-shaped support. An extrusion assembly is installed on the straight section above the support, and a pressure plate is rotatably connected to the lower end of the extrusion assembly. A support block is fixed on the straight section below the support, and an arc-shaped leak-sealing plate is inserted into the upper end of the support block. A sealing assembly is provided on the inner edge of the leak-sealing plate. The pipeline is located between the leak-sealing plate and the pressure plate. A lower groove and an upper groove are respectively provided in the middle of the upper end of the support block and the middle of the lower end of the pressure plate. A steel strip passes through the upper groove and the lower groove, and the leak-sealing plate is located between the steel strip and the pipeline.

[0007] Specifically, the extrusion assembly includes a bolt threadedly connected to the straight portion above the support, the bolt passing through the straight portion above the support, the pressure plate being arc-shaped, a fixing sleeve fixed to the upper end of the pressure plate, and the lower end of the bolt being rotatably connected to the fixing sleeve.

[0008] Specifically, the upper surface of the support block is an arc surface, and an insertion hole is opened at the middle position of the upper end of the support block on both the front and rear sides of the lower groove. The lower end of the sealing plate is fixed with a plug corresponding to the insertion hole, and the plug is inserted into the insertion hole.

[0009] Specifically, the sealing assembly includes an arc-shaped groove with an inner edge of a plugging plate, an arc-shaped sealing ring fixed inside the arc-shaped groove, and the sealing ring protruding to the outside of the arc-shaped groove.

[0010] Specifically, a through hole is provided on one side of the sealing ring portion in the lower groove, and a threaded hole corresponding to and connected to the through hole is provided on one side of the plugging plate, with a plugging screw connected to the threaded hole in a threaded seal.

[0011] Specifically, both ends of the steel strip are threaded through buckles.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The device uses purely mechanical components, and the entire leak-sealing process is completed manually. This eliminates the reliance on electricity or complex equipment, making it particularly suitable for remote oil fields, field environments, or emergency scenarios, ensuring the flexibility and reliability of leak-sealing operations.

[0013] 2. By tightly fitting the sealing ring to the outer wall of the pipeline, the device can directly seal leaks while the pipeline is under pressure. The arc-shaped design of the sealing ring ensures that its internal area precisely covers the leak point, forming an effective seal. In the initial stage of leak sealing, the leaking medium is allowed to temporarily drain through the perforation to reduce system pressure and improve the sealing success rate; after completion, tightening the sealing bolts will prevent medium leakage and enhance the overall sealing performance.

[0014] 3. The device adopts an inverted U-shaped support and modular components, such as a plug and socket structure, allowing for quick installation and disassembly. During the leak sealing process, the position of the pressure plate can be adjusted by bolts to accommodate different pipe diameters; after the leak sealing plate is secured with steel straps, the support can be easily removed, avoiding interference with subsequent pipeline operation, simplifying the operation steps, reducing the burden of carrying tools, and improving on-site work efficiency.

[0015] 4. After removing the sealing screws from the threaded hole, proactively manage pressure in the initial stage of leak sealing to reduce operational risks, such as media jetting. Simultaneously, the leak-sealing plate is replaceable, and a model compatible with the pipe diameter can be selected to ensure the device is suitable for various pipe specifications. Steel straps and locking mechanisms provide additional reinforcement to prevent leak-sealing plate displacement and enhance long-term stability.

[0016] 5. The device has a simple overall design and can complete the operation by relying on the steel belt tensioner and the snap fastener, which reduces the need for professional training. Even non-professionals can quickly get started, making it particularly suitable for rapid response and low-cost maintenance at oilfield sites. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the present invention.

[0018] Figure 2 This is a top view of the present invention.

[0019] Figure 3 for Figure 2 Sectional view along line AA.

[0020] Figure 4 This is a schematic diagram showing the fit between the sealing plate and the support block.

[0021] Figure 5 This is a schematic diagram showing the fit between a large-diameter plugging plate and a support block.

[0022] Figure 6 This is a bottom view of the leak-sealing plate.

[0023] Figure 7 This is a top view of the support block.

[0024] Figure 8 for Figure 7 Sectional view along the BB direction.

[0025] Figure 9 This is a cross-sectional view of the leak-stopping plate.

[0026] Figure 10 This is a schematic diagram of a leak-stopping plate.

[0027] Figure 11 This is a front view of the leak-stopping plate.

[0028] Figure 12 for Figure 11 Sectional view along the CC direction.

[0029] The components in the attached diagram are named as follows: 1. Pipe, 2. Bracket, 3. Pressure plate, 4. Upper groove, 5. Fixing sleeve, 6. Bolt, 7. Steel strip, 8. Lock, 9. Support block, 10. Lower groove, 11. Leak-stopping plate, 12. Insert rod, 13. Insertion hole, 14. Arc groove, 15. Sealing ring, 16. Through hole, 17. Threaded hole, 18. Sealing screw. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] Example 1: Refer to Figures 1-9 As shown, an oil well pipeline plugging device includes an inverted U-shaped support 2. A compression assembly is installed on the straight portion above the support 2, and a pressure plate 3 is rotatably connected to the lower end of the compression assembly. Specifically, the compression assembly includes a bolt 6 threadedly connected to the straight portion above the support 2, the bolt 6 passing through the straight portion above the support 2. The pressure plate 3 is arc-shaped, and a fixing sleeve 5 is fixed to the upper end of the pressure plate 3. The lower end of the bolt 6 is rotatably connected to the fixing sleeve 5.

[0032] A support block 9 is fixed on the straight part below the bracket 2. An arc-shaped leak-stopping plate 11 is inserted into the upper end of the support block 9. A sealing component is provided on the inner edge of the leak-stopping plate 11. The pipe 1 is located between the leak-stopping plate 11 and the pressure plate 3.

[0033] The upper middle part of the support block 9 and the lower middle part of the pressure plate 3 are respectively provided with a lower groove 10 and an upper groove 4. The steel strip 7 passes through the upper groove 4 and the lower groove 10. Both ends of the steel strip 7 are connected by a locking buckle 8. The leak-stopping plate 11 is located between the steel strip 7 and the pipe 1.

[0034] Specifically, the upper surface of the support block 9 is an arc surface, and an insertion hole 13 is opened at the middle position of the upper end of the support block 9 on both the front and rear sides of the lower groove 10. The lower end of the sealing plate 11 is fixed with an insertion rod 12 corresponding to the insertion hole 13, and the insertion rod 12 is inserted into the insertion hole 13.

[0035] The sealing assembly includes an arc-shaped groove 14 with an inner edge of a plugging plate 11, and an arc-shaped sealing ring 15 fixed inside the arc-shaped groove 14, with the sealing ring 15 protruding to the outside of the arc-shaped groove 14.

[0036] When it is necessary to perform pressurized leak sealing on pipe 1, a leak sealing plate 11 that is compatible with the diameter of pipe 1 is selected so that after the leak sealing plate 11 squeezes the pipe 1, the inner edge of the leak sealing plate 11 can fit against the outer wall of the pipe 1 that needs to be sealed.

[0037] Insert the plug 12 of the sealing plate 11 into the plug hole 13 of the support block 9, so that the pipe 1 is located between the pressure plate 3 and the sealing plate 11, and so that the inner area of ​​the sealing ring 15 corresponds to the leak point of the pipe 1.

[0038] Rotate bolt 6, which causes pressure plate 3 to approach pipe 1. Rotating bolt 6 causes pressure plate 3 and plugging plate 11 to squeeze pipe 1. After the inner edge of plugging plate 11 is tightly attached to the outer edge of pipe 1, plugging plate 11 is sealed to the outer edge of pipe 1 through sealing ring 15. At this time, the leak point of pipe 1 is sealed.

[0039] Then, the steel strip 7 passes through the upper groove 4 and the lower groove 10, and the two ends of the steel strip 7 pass through the locking buckle 8. The steel strip tensioner is used to tighten the steel strip 7 so that the steel strip 7 binds the sealing plate 11 tightly to the pipe 1. Then, the latching device is used to bite the locking buckle 8 so that the steel strip 7 and the locking buckle 8 are fixedly connected.

[0040] Finally, rotate bolt 6 to separate pressure plate 3 from pipe 1. After the plug rod 12 of sealing plate 11 is withdrawn from the insertion hole 13 of support block 9, bracket 2 can be separated from pipe 1.

[0041] In this embodiment, after the leak in pipe 1 is sealed, the leak-sealing plate 11 is fixed to the outside of pipe 1 by the cooperation of steel strip 7 and buckle 8. No power is required during the leak sealing process, making it suitable for field operations.

[0042] Example 2: Based on Example 1, referring to... Figures 10-12 As shown, a through hole 16 is provided on one side of the sealing ring 15 in the lower groove 10, and a threaded hole 17 corresponding to and connected to the through hole 16 is provided on one side of the plugging plate 11. A plugging screw 18 is threadedly connected to the threaded hole 17.

[0043] Before plugging the leak in pipe 1, remove the sealing screw 18. During the plugging process, the medium leaking from the leak in pipe 1 enters the sealing ring 15 and can be discharged through the perforation 16 and threaded hole 17, thereby reducing the pressure during the plugging process.

[0044] After the steel strip 7 and the locking buckle 8 work together to fix the plugging plate 11 onto the pipe 1, the plugging screw 18 can be threaded into the threaded hole 17 to seal the threaded hole 17 and prevent the leakage of the medium entering the inner area of ​​the sealing ring 15.

[0045] The above description is only 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 leak-sealing device for an oil well delivery pipeline, comprising an inverted U-shaped support (2), characterized in that, An extrusion assembly is installed on the straight part above the support (2). A pressure plate (3) is rotatably connected to the lower end of the extrusion assembly. A support block (9) is fixed on the straight part below the support (2). An arc-shaped plugging plate (11) is inserted into the upper end of the support block (9). A sealing assembly is provided on the inner edge of the plugging plate (11). The pipe (1) is located between the plugging plate (11) and the pressure plate (3). The middle part of the upper end of the support block (9) and the middle part of the lower end of the pressure plate (3) are respectively provided with a lower groove (10) and an upper groove (4). The steel strip (7) passes through the upper groove (4) and the lower groove (10). The plugging plate (11) is located between the steel strip (7) and the pipe (1). The upper end face of the support block (9) is an arc surface. A socket (13) is opened at the middle position of the upper end of the support block (9) on both sides of the lower groove (10). The lower end of the sealing plate (11) is fixed with a plug rod (12) corresponding to the socket (13). The plug rod (12) is inserted into the socket (13). The sealing assembly includes an arc-shaped groove (14) with an inner edge of a plugging plate (11), an arc-shaped sealing ring (15) fixed in the arc-shaped groove (14), and the sealing ring (15) protruding to the outside of the arc-shaped groove (14). A through hole (16) is provided on one side of the sealing ring (15) in the lower groove (10), and a threaded hole (17) corresponding to and connected to the through hole (16) is provided on one side of the plugging plate (11). A plugging screw (18) is threadedly sealed in the threaded hole (17).

2. The oil well pipeline plugging device according to claim 1, characterized in that, The extrusion assembly includes a bolt (6) threadedly connected to the straight portion above the bracket (2), the bolt (6) passing through the straight portion above the bracket (2), the pressure plate (3) being arc-shaped, the upper end of the pressure plate (3) being fixed with a fixing sleeve (5), and the lower end of the bolt (6) being rotatably connected to the fixing sleeve (5).

3. The oil well pipeline plugging device according to claim 1, characterized in that, Both ends of the steel strip (7) are threaded through the buckle (8).

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