A temporary connection device for pipelines on offshore platforms

Abstract

This utility model relates to the field of pipeline connection technology. A temporary pipeline connection device for offshore platforms includes a pipe body with clamping mechanisms at both ends. Each clamping mechanism includes two semi-clamping rings, which are connected to both sides of the pipe body via tightening rods. The two semi-clamping rings are joined to form a ring structure. The pipe opening end of the pipe body is positioned opposite to the opening end of the ring structure on the same side. Each semi-clamping ring has two ends extending outwards to form a splicing end. Two adjacent splicing ends in the same clamping mechanism are detachably connected together via connectors. The advantages of this utility model are: it can quickly and effectively handle perforated or broken pipe sections, allowing the pipeline to quickly resume operation, and solving the problem of continuous leakage of internal substances or easy expansion of leaks after perforation or breakage.

Description

Technical Field

[0001] This utility model relates to the field of pipeline connection technology, specifically to a temporary connection device for pipelines on offshore platforms. Background Technology

[0002] Offshore oil and gas production facilities are distributed across various locations in the ocean, with a complex network of pipelines on their platforms. These pipelines transport substances such as oil, gas, and water, and leaks can have serious consequences. Generally, offshore platform pipelines can be categorized into several types, including carbon steel, stainless steel, fiberglass, and plastic pipelines. Stainless steel and fiberglass pipelines are generally leak-free, but they are relatively expensive. Carbon steel pipelines are widely used, but due to corrosion, they frequently corrode and perforate, leading to leaks. The most common method for repairing leaks is welding. Plastic pipelines are generally used for transporting freshwater and other materials; however, due to their limited lifespan, they are prone to breakage, resulting in leaks.

[0003] When carbon steel and plastic pipelines leak, temporary methods used by workers to handle the leaks generally fall into two categories: leak point welding and epoxy resin coating. However, in practical use, these two methods have been found to have many problems, mainly the following:

[0004] 1. When pipeline corrosion and perforation are severe, the leak point welding method is ineffective. At this time, it is necessary to cut off the severely corroded pipe section and replace it with a new pipe. However, in actual field, the pipe replacement operation is cumbersome and time-consuming, and it is not possible to repair the pipeline immediately to achieve the purpose of leak repair. It is easy to face the operational risks caused by the changeable marine climate.

[0005] 2. During the process of epoxy resin coating pipelines, the epoxy resin needs a long time to solidify. During this time, there should be no liquid flowing in the pipeline, otherwise the epoxy resin will not be able to play a role in sealing leaks. When there is a lot of liquid in the pipeline that needs to be repaired, it cannot be drained in a short time, which will eventually cause the transmission of liquids and other substances in the pipeline to stop for a long time.

[0006] 3. Regardless of whether the leak is welded or coated with epoxy resin, the pipeline should not be pressurized. However, before the liquid or other substances in the pipeline are completely drained, there will be a certain pressure, which makes the repair work of the pipeline that needs to be restored urgently difficult.

[0007] 4. Valves installed on pipelines sometimes become damaged, and there are no corresponding spare parts available on site. However, it is necessary to control the flow of liquids and other substances in the pipeline, so the main valve can be used for control. This not only wastes manpower and resources, but also causes great inconvenience to the use of materials on site. Summary of the Invention

[0008] The purpose of this utility model is to provide a temporary connection device for pipelines on offshore platforms, which can quickly and effectively handle perforated or broken pipe sections, allowing the pipeline to quickly resume its transportation operation, and solving the problem of continuous leakage of internal substances or easy expansion of the leak point after the pipeline is perforated or broken.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A temporary pipeline connection device for an offshore platform includes a pipe body with clamping mechanisms at both ends. Each clamping mechanism includes two semi-clamping rings, which are connected to both sides of the pipe body via tightening rods. The two semi-clamping rings are joined together to form a ring structure. The pipe opening end of the pipe body is positioned opposite to the opening end of the ring structure on the same side. Both ends of each semi-clamping ring extend outward to form splicing ends. Two adjacent splicing ends in the same clamping mechanism are detachably connected together via connectors.

[0011] Furthermore, the connecting component is a locking bolt, and each of the two adjacent splicing ends in the same clamping mechanism is provided with a connecting screw hole, and the two connecting screw holes are connected to each other by the locking bolt.

[0012] Furthermore, the end of the tightening rod away from the semi-locking ring is connected to the outer side of the tube body via a hinge.

[0013] Furthermore, the hinge component includes a positioning bolt, a first positioning nut, and two hinge lugs. The two hinge lugs are vertically and spaced apart on the outer side of the tube body. The positioning bolt passes through the lug holes of the two hinge lugs, and its end is screwed to the first positioning nut. The end of the tightening rod away from the semi-clamp is sleeved on the positioning bolt and clamped between the two hinge lugs.

[0014] Furthermore, the pipe body includes a first pipe section, a middle pipe section, and a last pipe section connected in sequence and having the same inner diameter. The first pipe section and the last pipe section are both configured as a tapered structure with an outer contour that gradually increases in the direction from the pipe opening end to the middle pipe section.

[0015] Furthermore, the outer surfaces of both the first and last pipe sections are fitted with sealing sleeves.

[0016] Furthermore, the middle pipe section is provided with a valve plate for sealing the pipe body. The valve plate is set in the middle pipe section by a rotating rod. The end of the rotating rod passes through and extends to the outside of the middle pipe section, and the end of the rotating rod is provided with a handle.

[0017] Furthermore, the outer contour of the middle pipe section is set as a rectangular structure.

[0018] Furthermore, the end of the tightening rod away from the tube body is provided with a positioning screw extending along its axial direction, and a second positioning nut is screwed onto the positioning screw. The middle part of the semi-clamping ring is sleeved on the positioning screw through a connecting ear, and the connecting ear is held between the tightening rod and the second positioning nut.

[0019] Furthermore, the inner circumferential surface of the semi-clamp ring is provided with an anti-slip rubber pad.

[0020] The beneficial effects of this utility model are:

[0021] 1. This device has the function of temporarily connecting pipelines on offshore platforms, quickly handling perforated or broken pipe sections on offshore platform pipelines, allowing the offshore platform pipelines to quickly resume transportation operations, while ensuring that gaseous or liquid substances in the offshore platform pipelines can flow stably and continuously.

[0022] 2. This device can quickly and stably seal pipelines on offshore platforms, effectively blocking the flow of internal gaseous or liquid substances. It plays a good auxiliary role in repairing leaks caused by damaged pipeline valves or severe pipeline breaks. In emergency situations, it can improve the efficiency of leak repair work. Attached Figure Description

[0023] Figure 1 This is a perspective view of a temporary pipeline connection device for an offshore platform according to this utility model.

[0024] Figure 2 This is a front view of a temporary pipeline connection device for an offshore platform according to this utility model.

[0025] Figure 3 This is a top view of a temporary pipeline connection device for offshore platforms according to this utility model.

[0026] Figure 4 This is a side view of a temporary pipeline connection device for an offshore platform according to this utility model.

[0027] Figure 5 This is a schematic diagram of a temporary connection device for pipelines on an offshore platform, according to the present invention, assembled on the pipelines of an offshore platform. Detailed Implementation

[0028] The technical solutions in the embodiments of this utility model will now be described with reference to the accompanying drawings.

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, a temporary pipeline connection device for an offshore platform includes a pipe body 1. Clamping mechanisms 2 are provided at both ends of the pipe body 1. Each clamping mechanism 2 includes two semi-clamping rings 2a, which are connected to both sides of the pipe body 1 via tightening rods 2b. The two semi-clamping rings 2a are spliced ​​together to form a ring structure. The pipe opening end of the pipe body 1 is positioned opposite to the opening end of the ring structure located on the same side. Each semi-clamping ring 2a has two ends extending outwards to form splicing ends 2c. Two adjacent splicing ends 2c in the same clamping mechanism 2 are detachably connected together via connectors 2d.

[0030] In this embodiment, when this device is needed, the perforated or broken pipe sections on the offshore platform pipeline 8 are first cut off, and then this device replaces the perforated or broken pipe sections and is connected to the offshore platform pipeline 8. Specifically, the two ends of the pipe body 1 are aligned and fitted with the two cut openings of the offshore platform pipeline 8. Two semi-clamping rings 2a are used on each side of this device to clamp the outer side of the offshore platform pipeline 8. The two semi-clamping rings 2a are spliced ​​together by the connector 2d to maintain a stable clamping state, and finally the device is fixed on the offshore platform pipeline 8. This device has the function of temporarily connecting the offshore platform pipeline 8, quickly handling the perforated or broken pipe sections on the offshore platform pipeline 8, allowing the offshore platform pipeline 8 to quickly resume its transportation operation, and ensuring that the gaseous or liquid substances in the offshore platform pipeline 8 can flow stably and continuously.

[0031] It is understandable that if the section of the pipeline 8 to be cut on the offshore platform is long, multiple temporary connection devices can be configured. The multiple temporary connection devices can be spliced ​​together with additional pipe fittings to ensure that the end of the pipe body 1 can be tightly attached to the cut of the offshore platform pipeline 8 so that the gaseous or liquid substances in the offshore platform pipeline 8 will not flow out to the outside.

[0032] The connecting piece 2d is a locking bolt. Each pair of adjacent splicing ends 2c in the same clamping mechanism 2 is provided with a connecting screw hole 2e, and the two connecting screw holes 2e are connected to each other by the locking bolt. By simply rotating the locking bolt, the two semi-clamping rings 2a can be spliced ​​into a ring structure or separated from each other, making the operation simple and enabling rapid installation of this device.

[0033] The end of the tightening rod 2b furthest from the semi-clamping ring 2a is connected to the outer side of the pipe body 1 via a hinge 2f. The hinge 2f includes a positioning bolt 2g, a first positioning nut 2h, and two hinge lugs 2i. The two hinge lugs 2i are vertically and spaced apart on the outer side of the pipe body 1. The positioning bolt 2g passes through the lug holes of the two hinge lugs 2i, and its end is screwed to the first positioning nut 2h. The end of the tightening rod 2b furthest from the semi-clamping ring 2a is sleeved on the positioning bolt 2g and clamped between the two hinge lugs 2i. The hinge 2f allows the tightening rod 2b to swing freely to adjust the clamping state of the two semi-clamping rings 2a, thereby stably clamping them onto the offshore platform pipeline 8. The component design of the hinge 2f allows the tightening rod 2b and the semi-clamping rings 2a to be freely disassembled and installed. This not only allows for quick configuration of suitable semi-clamping rings 2a according to the specific dimensions of the offshore platform pipeline 8, but also facilitates the maintenance and repair of this device, reducing operating costs.

[0034] The pipe body 1 comprises a first pipe section 1a, a middle pipe section 1b, and a last pipe section 1c, which are connected sequentially and have the same inner diameter. The first pipe section 1a and the last pipe section 1c are both designed as tapered structures with gradually increasing outer contours from the pipe opening to the middle pipe section 1b. The tapered structure of the first pipe section 1a and the last pipe section 1c allows the end of the pipe body 1 to extend into the offshore platform pipeline 8 when docking with it. The inclined surfaces of the first pipe section 1a and the last pipe section 1c are tightly fitted with the two cut openings of the offshore platform pipeline 8, respectively, to prevent gaseous or liquid substances inside the offshore platform pipeline 8 from flowing out to the outside.

[0035] Both the first pipe section 1a and the last pipe section 1c are fitted with sealing sleeves 3 on their outer surfaces. The sealing sleeves 3 can improve the sealing effect. Even if the flow rate of gaseous or liquid substances in the offshore platform pipeline 8 is large and the flow velocity is fast, it can prevent gaseous or liquid substances from breaking through the connection between the pipe body 1 and the offshore platform pipeline 8, effectively preventing the gaseous or liquid substances inside from flowing out to the outside, and forming a stable and good pipeline leak repair effect.

[0036] The intermediate pipe section 1b is equipped with a valve plate 4 for sealing the pipe body 1. The valve plate 4 is installed inside the intermediate pipe section 1b via a rotating rod 5. The end of the rotating rod 5 extends through and out to the outside of the intermediate pipe section 1b, and the end of the rotating rod 5 is equipped with a handle 6. The valve plate 4 can quickly and stably seal the pipeline 8 on the offshore platform, effectively blocking the flow of gaseous or liquid substances inside. It plays a good auxiliary role in leak repair work for situations such as damaged pipeline valves or severe pipeline breaks. In emergency situations, it can improve the efficiency of leak repair work. The pipe body 1 can be opened or sealed simply by rotating the valve plate 4 via the rotating rod 5, making the operation simple and quick.

[0037] The outer contour of the central pipe section 1b is designed as a rectangular structure. The rectangular structure of the central pipe section 1b facilitates its horizontal placement on the deck of the offshore platform and serves as an auxiliary support, preventing the device from being suspended in mid-air while transporting liquid and ensuring the stability of the temporary connection of the device.

[0038] The tightening rod 2b has a positioning screw 2j extending axially at its end away from the pipe body 1. A second positioning nut 2k is screwed onto the positioning screw 2j. The middle part of the semi-clamping ring 2a is sleeved on the positioning screw 2j through a connecting lug 2l, which is clamped between the tightening rod 2b and the second positioning nut 2k. After the two semi-clamping rings 2a are clamped onto the offshore platform pipeline 8, the second positioning nut 2k is rotated to move the tapered first pipe section 1a or last pipe section 1c toward the offshore platform pipeline 8. The offshore platform pipeline 8 presses against the sealing sleeve 3, thereby enhancing the sealing effect between the pipe body 1 and the offshore platform pipeline 8. In addition, the semi-clamping rings 2a can be freely disassembled and installed to allow for the configuration of suitable semi-clamping rings 2a for offshore platform pipelines 8 of different sizes.

[0039] The inner circumferential surface of the semi-clamping ring 2a is provided with an anti-slip rubber pad 7. After the two semi-clamping rings 2a are clamped onto the offshore platform pipeline 8, the anti-slip rubber pad 7 can prevent the semi-clamping rings 2a from sliding freely, allowing the pipe body 1 to stably abut against the offshore platform pipeline 8, forming a good sealing effect. The anti-slip rubber pad 7 can also play a good buffering role between the offshore platform pipeline 8 and the semi-clamping rings 2a, preventing the semi-clamping rings 2a from scratching the surface of the offshore platform pipeline 8.

Claims

1. A marine platform pipeline temporary connection device comprising a pipe body (1), characterised in that: The tube body (1) is provided with clamping mechanisms (2) at both ends. The clamping mechanism (2) includes two half-clamping rings (2a). The two half-clamping rings (2a) are connected to both sides of the tube body (1) by tightening rods (2b). The two half-clamping rings (2a) are spliced ​​to form a ring structure. The tube opening end of the tube body (1) is opposite to the opening end of the ring structure located on the same side. The two ends of each half-clamping ring (2a) extend outward to form splicing ends (2c). The two adjacent splicing ends (2c) in the same clamping mechanism (2) can be detachably connected together by connectors (2d).

2. A marine platform pipeline temporary connection apparatus according to claim 1, characterised in that: The connector (2d) is a locking bolt. Each of the two adjacent splicing ends (2c) in the same clamping mechanism (2) is provided with a connecting screw hole (2e), and the two connecting screw holes (2e) are connected to each other by the locking bolt.

3. The offshore platform pipeline temporary connection apparatus of claim 1, wherein: The end of the tightening rod (2b) away from the semi-clamp (2a) is connected to the outer side of the tube body (1) via a hinge (2f).

4. A marine platform pipeline temporary connection apparatus according to claim 3, characterised in that: The hinge (2f) includes a positioning bolt (2g), a first positioning nut (2h), and two hinge ear plates (2i). The two hinge ear plates (2i) are vertically and spaced apart on the outer side of the tube body (1). The positioning bolt (2g) passes through the ear holes of the two hinge ear plates (2i) and its end is screwed to the first positioning nut (2h). The end of the tightening rod (2b) away from the semi-clamp (2a) is sleeved on the positioning bolt (2g) and clamped between the two hinge ear plates (2i).

5. Offshore platform pipeline temporary connection apparatus according to any one of claims 1 to 4, characterised in that: The pipe body (1) includes a first pipe section (1a), a middle pipe section (1b), and a last pipe section (1c) connected in sequence with the same inner diameter. The first pipe section (1a) and the last pipe section (1c) are both set as a tapered structure with an outer contour that gradually increases in the direction from the pipe end to the middle pipe section (1b).

6. The temporary pipeline connection device for offshore platforms according to claim 5, characterized in that: The outer surfaces of the first pipe section (1a) and the last pipe section (1c) are both fitted with sealing sleeves (3).

7. The temporary pipeline connection device for offshore platforms according to claim 6, characterized in that: The middle pipe section (1b) is provided with a valve plate (4) for sealing the pipe body (1). The valve plate (4) is set in the middle pipe section (1b) by a rotating rod (5). The end of the rotating rod (5) extends through and out to the outside of the middle pipe section (1b). The end of the rotating rod (5) is provided with a handle (6).

8. The temporary pipeline connection device for offshore platforms according to claim 7, characterized in that: The outer contour of the middle pipe section (1b) is set as a rectangular structure.

9. The temporary pipeline connection device for offshore platforms according to any one of claims 1 to 8, characterized in that: The tightening rod (2b) is provided with a positioning screw (2j) extending axially at one end away from the tube body (1). A second positioning nut (2k) is screwed onto the positioning screw (2j). The middle part of the half-clamp (2a) is sleeved on the positioning screw (2j) through a connecting ear (2l). The connecting ear (2l) is clamped between the tightening rod (2b) and the second positioning nut (2k).

10. The temporary pipeline connection device for offshore platforms according to any one of claims 1 to 9, characterized in that: The inner circumferential surface of the semi-clamping ring (2a) is provided with an anti-slip rubber pad (7).

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