A composite sleeve repair device for oil and gas pipeline defects

Abstract

The utility model relates to a kind of composite sleeve repair device of oil and gas pipeline defect, belong to oil and gas pipeline equipment technical field, a kind of composite sleeve repair device of oil and gas pipeline defect, including pipeline, the outer wall of pipeline is provided with glass fiber reinforced resin base, the outer wall of glass fiber reinforced resin base is provided with repair assembly, the bottom of repair assembly is provided with support assembly, the utility model is coated with epoxy primer after polishing treatment to pipeline, glass fiber reinforced resin base is pasted on the surface after polishing, then screw is screwed on after the cooperation of arc ring two and arc ring one, make arc ring one and arc ring two fixed, then plug is opened in turn and injected epoxy resin, let the gap between arc ring one, arc ring two and glass fiber reinforced resin base be filled with epoxy resin, plug-in fast positioning, thread accurate gap adjustment, can let outer sleeve and pipeline closely adhere, provide stable airtight space for epoxy resin infusion, avoid sleeve displacement when injecting glue and cause glue leakage.

Description

Technical Field

[0001] This utility model belongs to the technical field of oil and gas pipeline equipment, specifically relating to a composite sleeve repair device for oil and gas pipeline defects. Background Technology

[0002] After long-term operation, oil and gas pipelines may develop defects that affect the safety of oil and gas pipeline transportation, such as metal loss, interlayer, cracks, abnormal circumferential welds, and dents. To address these pipeline defects, fiberglass, glass fiber, and Kevlar fiber reinforced resin matrix can be used for reinforcement and repair. The main construction processes include three types: wet winding, preforming, and prepreg.

[0003] For example, in Chinese Utility Model No. CN210510732U, entitled "A Composite Sleeve Repair Device for Oil and Gas Pipeline Defects," a repair device body is included. The repair device body includes a pipe, a sleeve is provided on the pipe, and a fiber cloth is installed on the sleeve. The above-mentioned prior art uses glass fiber to fix the sleeves together, which effectively ensures the repair quality and is convenient to use. However, when it is necessary to inject epoxy resin into the gap, the staff needs to adjust the gap, resulting in low efficiency. Therefore, in order to improve the repair efficiency, a composite sleeve repair device for oil and gas pipeline defects is needed. Utility Model Content

[0004] The purpose of this utility model is to provide a composite sleeve repair device for oil and gas pipeline defects that is simple in structure and reasonably designed in order to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A composite sleeve repair device for defects in oil and gas pipelines includes a pipeline, the outer wall of which is provided with a glass fiber reinforced resin matrix, a repair component is provided on the outer wall of the glass fiber reinforced resin matrix, and a support component is provided at the bottom of the repair component.

[0007] As a further optimization of this utility model, the repair component includes an arc-shaped ring 1 and an arc-shaped ring 2 that abut against the outer wall of the glass fiber reinforced resin matrix. Dovetail blocks are fixedly connected to both sides of the arc-shaped ring 1, and dovetail grooves that cooperate with the dovetail blocks are opened on both sides of the arc-shaped ring 2. The outer wall of the arc-shaped ring 1 is threaded with a screw that penetrates the dovetail groove opened in the arc-shaped ring 2 and abuts against the inside of the dovetail block.

[0008] As a further optimization of this utility model, both the first arc ring and the second arc ring are detachably connected to multiple plugs on their exteriors, and both ends of the first arc ring and the second arc ring are abutted against a sealing ring that contacts the outer wall of the pipe.

[0009] As a further optimization of this utility model, the support assembly includes a support frame that abuts against the outer wall of the arc-shaped ring, and a support plate is fixedly connected to the bottom of the support frame.

[0010] As a further optimization of this utility model, the bottom of the support plate is rotatably connected to multiple connecting rods, which are arranged in pairs and symmetrically distributed. One end of the two connecting rods in the same group is rotatably connected to a sliding block, and a screw rod is threaded through the interior of the two sliding blocks. The bottom of the support plate is fixedly connected to multiple support rods, and sliding cylinders are slidably connected to the outside of the multiple support rods. The bottom of the multiple sliding cylinders is fixedly connected to a base plate, and the two ends of the screw rod are rotatably connected to a side plate fixedly connected to the top of the base plate.

[0011] As a further optimization of this utility model, the outer surfaces of the first and second arc-shaped rings are wrapped with fiber cloth, and the intermediate layer between the pipe and the glass fiber reinforced resin matrix is ​​coated with epoxy resin primer.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. This utility model involves grinding the pipe, applying an epoxy resin primer, and then attaching a glass fiber reinforced resin base to the ground surface. Next, the second arc-shaped ring is fitted with the first arc-shaped ring and screwed on to fix them in place. Then, the plug is opened sequentially and epoxy resin is injected, filling the gaps between the first and second arc-shaped rings and the glass fiber reinforced resin base. The quick-positioning and precise thread adjustment allow the outer sleeve to fit tightly against the pipe, providing a stable and sealed space for epoxy resin injection and preventing sleeve displacement and leakage during injection.

[0014] 2. This utility model uses a rotating screw to move two sliding blocks inward, which in turn rotates the connecting rod, causing the support plate to move upward and the support frame to move. At the same time, the support rod moves upward along the sliding cylinder, adjusting the second arc ring to a suitable position and fixing it to the second arc ring. This supports the outer sleeve, preventing it from adhering to the pipe and forming a sealed space. It provides a stable channel for resin injection, reduces air bubble residue, ensures that the resin evenly fills the gap between the inner sleeve and the pipe, and improves the interface bonding strength and sealing effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a view of the repair component of this utility model in conjunction with the glass fiber reinforced resin matrix;

[0017] Figure 3 This is a schematic diagram of the structure of the support component of this utility model;

[0018] Figure 4 This is a utility model Figure 2 Enlarged view of point A in the middle.

[0019] In the diagram: 1. Pipe; 2. Glass fiber reinforced resin matrix; 3. Repair component; 301. Arc ring one; 302. Arc ring two; 303. Dovetail block; 304. Screw; 305. Plug; 306. Sealing ring; 4. Support component; 401. Base plate; 402. Sliding cylinder; 403. Screw; 404. Sliding block; 405. Connecting rod; 406. Support plate; 407. Support frame; 408. Support rod; 409. Side plate. Detailed Implementation

[0020] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0021] Example 1

[0022] like Figure 1 , Figure 2 , Figure 4 As shown, a composite sleeve repair device for oil and gas pipeline defects includes a pipeline 1, which is the main body for transporting the medium to be repaired. Defects on its outer wall need to be repaired by subsequent components to restore its transport function. The outer wall of the pipeline 1 is provided with a glass fiber reinforced resin matrix 2, which fills the defects in the outer wall of the pipeline 1. It works in conjunction with an epoxy resin primer to form a preliminary repair layer to improve the stability of the pipeline structure. Repair components 3 are provided on the outer wall of the glass fiber reinforced resin matrix 2, which can secure the glass fiber reinforced resin matrix 2 and prevent it from collapsing. The displacement of the outer wall of pipe 1 affects the repair effect. Repair component 3 includes arc ring one 301 and arc ring two 302. Arc ring one 301 and arc ring two 302 can be spliced ​​into a ring structure, which completely wraps around the outer wall of glass fiber reinforced resin matrix 2. The inner wall of arc ring one 301 abuts against the outer wall of glass fiber reinforced resin matrix 2, which can apply inward pressure to glass fiber reinforced resin matrix 2. The inner wall of arc ring two 302 abuts against the outer wall of glass fiber reinforced resin matrix 2. Arc ring one 301 works together to fix glass fiber reinforced resin matrix 2 from different directions, further enhancing the fixation effect.

[0023] like Figure 1 , Figure 2 , Figure 4As shown, dovetail blocks 303 are fixedly connected to both sides of the arc-shaped ring 301. Dovetail grooves that mate with the dovetail blocks 303 are provided on both sides of the arc-shaped ring 302. The dovetail grooves provide installation guidance for the dovetail blocks 303, ensuring precise docking between the arc-shaped ring 301 and the arc-shaped ring 302. A screw 304 is threaded through the outer wall of the arc-shaped ring 301. The screw 304 is used to fix the arc-shaped ring 301 and the arc-shaped ring 302. By rotating the screw 304, its position on the arc-shaped ring 301 can be adjusted for better connection with the dovetail blocks 303. The external thread of the screw 304 passes through the inner wall of the dovetail block 303, firmly connecting the arc-shaped ring 301 and the dovetail block 303, thereby achieving the fixation of the arc-shaped ring 301 and the arc-shaped ring 302.

[0024] like Figure 1 , Figure 2 As shown, multiple plugs 305 are detachably connected to the outside of both the arc-shaped ring 301 and the arc-shaped ring 302. The plugs 305 can be removed to facilitate the injection of epoxy resin and prevent air bubbles from remaining during injection. Both ends of the arc-shaped ring 301 and the arc-shaped ring 302 are abutted by sealing rings 306. The sealing rings 306 can seal the gaps between the arc-shaped ring 301, the arc-shaped ring 302 and the pipe 1, preventing the injected epoxy resin from overflowing from both ends. The sealing rings 306 are in contact with the outside of the pipe 1 to improve the sealing effect. The outside of the arc-shaped ring 301 and the arc-shaped ring 302 is wrapped with fiber cloth. The fiber cloth can enhance the structural strength of the arc-shaped ring 301 and the arc-shaped ring 302 and prevent deformation during subsequent use. The intermediate layer between the pipe 1 and the glass fiber reinforced resin base 2 is coated with epoxy resin primer. The epoxy resin primer can improve the adhesion between the pipe 1 and the glass fiber reinforced resin base 2, so that the glass fiber reinforced resin base 2 is more firmly attached to the outer wall of the pipe 1.

[0025] like Figure 1 , Figure 3 As shown, a support component 4 is provided at the bottom of the repair component 3. The support component 4 provides stable support for the repair component 3, ensuring that the repair component 3 remains in a stable position during the repair process. The support component 4 includes a support frame 407, which can directly support the arc-shaped ring 302 and transfer the weight of the arc-shaped ring 302 to the structure below. The top of the support frame 407 abuts against the bottom of the arc-shaped ring 302, directly applying an upward supporting force to the arc-shaped ring 302. A support plate 406 is fixedly connected to the bottom of the support frame 407, and the support plate 406 is fixed on the support frame 407 to make the force more even.

[0026] like Figure 1 , Figure 3As shown, four connecting rods 405 are rotatably connected to the bottom of the support plate 406. The connecting rods 405 can change their angle by rotating, thereby driving the support plate 406 to move up and down, realizing the adjustment of the height of the repair component 3. The four connecting rods 405 are arranged in pairs, symmetrically distributed. One end of the two connecting rods 405 in the same group is rotatably connected to a sliding block 404. The movement of the sliding block 404 can drive the connecting rod 405 to rotate, providing power for the movement of the support plate 406. The common thread inside the two sliding blocks 404 passes through a screw 403. Rotating the screw 403 can drive the sliding block 404 to move along the screw 403 through the thread transmission, thereby controlling the rotation of the connecting rod 405. The bottom of the support plate 406 is fixedly connected to four connecting rods 405. The support rods 408 support the support plate 406. The four support rods 408 are slidably connected to the outside of the sliding cylinders 402, which provide a sliding track for the support rods 408 to ensure smooth movement. The bottom of the four sliding cylinders 402 is fixedly connected to the base plate 401, which can transfer the weight of the support assembly 4 to the ground and provide a stable installation foundation for the entire support assembly 4. The top of the base plate 401 is fixedly connected to two side plates 409, which provide support for the rotation of the screw 403. The two ends of the screw 403 rotate through the two side plates 409, ensuring that the sliding block 404 moves stably along the screw 403, thereby ensuring the normal realization of the adjustment function of the support assembly 4.

[0027] It should be noted that, in the use of this composite sleeve repair device for oil and gas pipeline defects, the defective surface of pipeline 1 is first ground, and then an epoxy resin primer is applied so that the glass fiber reinforced resin matrix 2 adheres to the ground surface. Then, the base plate 401 is placed directly below pipeline 1, and the arc-shaped ring 302 is placed on the support frame 407. Rotating the screw 403 causes the two sliding blocks 404 to move inward, causing the connecting rod 405 to rotate. Then, the support plate 406 moves upward, and the support rod 408 moves upward along the sliding cylinder 402, causing the arc-shaped ring 302 to rotate. Once the second arc ring 302 is in the appropriate position, slide the first arc ring 301 into the dovetail groove of the second arc ring 302 and tighten the screw 304 to fix the first arc ring 301 and the second arc ring 302. Then, open the plug 305 in sequence and inject epoxy resin to fill the gap between the first arc ring 301, the second arc ring 302 and the glass fiber reinforced resin matrix 2. After the epoxy resin has cured, turn the screw 403 again to disengage the support frame 407 from the second arc ring 302, and then remove the support assembly 4 to complete the repair of the pipe 1.

[0028] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A composite sleeve repair device for oil and gas pipeline defects, characterized in that, The device includes a pipe (1), the outer wall of which is provided with a glass fiber reinforced resin matrix (2), the outer wall of which is provided with a repair component (3), and the bottom of which is provided with a support component (4).

2. The composite sleeve repair device for oil and gas pipeline defects according to claim 1, characterized in that: The repair component (3) includes an arc-shaped ring one (301) and an arc-shaped ring two (302) that abut against the outer wall of the glass fiber reinforced resin matrix (2). Dovetail blocks (303) are fixedly connected to both sides of the arc-shaped ring one (301). Dovetail grooves that mate with the dovetail blocks (303) are opened on both sides of the arc-shaped ring two (302). The outer wall of the arc-shaped ring one (301) is threaded with a screw (304) that penetrates the dovetail groove of the arc-shaped ring two (302) and abuts against the inside of the dovetail block (303).

3. The composite sleeve repair device for oil and gas pipeline defects according to claim 2, characterized in that: Both the first arc ring (301) and the second arc ring (302) are detachably connected to multiple plugs (305), and both ends of the first arc ring (301) and the second arc ring (302) are abutted by sealing rings (306) that are in contact with the outer wall of the pipe (1).

4. The composite sleeve repair device for oil and gas pipeline defects according to claim 2, characterized in that: The support assembly (4) includes a support frame (407) that abuts against the outer wall of the arc-shaped ring (302), and a support plate (406) is fixedly connected to the bottom of the support frame (407).

5. The composite sleeve repair device for oil and gas pipeline defects according to claim 4, characterized in that: The bottom of the support plate (406) is rotatably connected to multiple connecting rods (405). The multiple connecting rods (405) are arranged in pairs and are symmetrically distributed. One end of the two connecting rods (405) in the same group is rotatably connected to a sliding block (404). The two sliding blocks (404) are threaded together with a screw (403). The bottom of the support plate (406) is fixedly connected to multiple support rods (408). The outside of the multiple support rods (408) is slidably connected to a sliding cylinder (402). The bottom of the multiple sliding cylinders (402) is fixedly connected to a base plate (401). The two ends of the screw (403) are rotatably connected to a side plate (409) fixedly connected to the top of the base plate (401).

6. The composite sleeve repair device for oil and gas pipeline defects according to claim 2, characterized in that: The outer surfaces of the first arc ring (301) and the second arc ring (302) are wrapped with fiber cloth, and the intermediate layer between the pipe (1) and the glass fiber reinforced resin base (2) is coated with epoxy resin primer.

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