A subsea pipeline notching device

Abstract

This utility model discloses a subsea pipeline grooving device, including a grooving base frame. One end of the grooving base frame is provided with a transverse vibration mechanism, which includes a support rod that is elastically slidably inserted into the interior of one end of the grooving base frame via a limiting plate and a spring. A cam drive mechanism is provided inside the grooving base frame on one side of the limiting plate. One end of the support rod is provided with a first plowshare via an inner bracket. A second plowshare is fixedly provided on the upper side of the first plowshare. Second mudguards are provided on both sides of the second plowshare. A pushing mechanism is also provided on the outer wall of the second mudguard. Because the grooving base frame is provided with a transverse vibration mechanism and a first and a second plowshare, this utility model allows for transverse vibration of the plowshare by the transverse vibration mechanism while the equipment drives the plowshare to move and groove, effectively breaking through hard soil layers or rocks and improving the efficiency of subsea pipeline grooving.

Description

Technical Field

[0001] This utility model relates to the field of submarine pipeline grooving technology, specifically a submarine pipeline grooving device. Background Technology

[0002] Submarine pipelines are sealed conduits used to continuously transport large quantities of oil (or gas) across the seabed. Laying submarine pipelines requires trenching of the seabed, which necessitates the use of trenching equipment. To prevent damage to submarine pipelines, various protective schemes and measures are employed, the most common construction procedure being the excavation of trenches for pipeline burial. This economical and effective engineering measure not only prevents pipeline instability caused by the dynamic forces of water particles but also protects the pipeline from mechanical damage, eliminates or reduces free span, inhibits pipeline buckling and bulging, and increases the pipeline's thermal insulation effect.

[0003] A prior art application (application number 202023114698.X) describes a trenching device for laying subsea pipelines. This device includes components such as a drill bit, cutting teeth, a rotating shaft, a mechanical seal, a nozzle, an outer casing, an inner and outer push-pull rod, a fixing rod, a fixing clip, a filter screen, a hose, an inner cylinder, an inner pump, an inner pump mounting base, an inlet pipe, an outlet pipe, a waterproof motor, and a reducer. It employs a combination of mechanical and hydraulic jetting techniques to trench the seabed. This invention offers advantages such as good trenching effect, high work efficiency, stable operation, and economic safety. However, it has a complex structure, high manufacturing cost, and relatively low efficiency in trenching subsea pipelines. Utility Model Content

[0004] The purpose of this invention is to provide a subsea pipeline grooving device to solve the problems of complex structure, high manufacturing cost, and relatively low efficiency in the existing technology for grooving subsea pipelines.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a subsea pipeline grooving device, comprising a grooving base frame, wherein a transverse vibration mechanism is provided inside one end of the grooving base frame, and the transverse vibration mechanism includes a support rod that is elastically slidably inserted into one end of the grooving base frame via a limiting plate and a spring, wherein a cam drive mechanism is provided inside the grooving base frame on one side of the limiting plate, wherein a first plowshare is provided at one end of the support rod via an inner bracket, wherein a second plowshare is fixedly provided on the upper side of the first plowshare, wherein second mudguards are provided on both sides of the second plowshare, and a pushing mechanism is also provided on the outer wall of the second mudguard.

[0006] Furthermore, the height of the second plowshare is greater than the height of the first plowshare, and the opening and closing angle of the second plowshare is greater than the opening and closing angle of the first plowshare.

[0007] Furthermore, a first mudguard is provided on one side of the first plowshare, and the first mudguard and the second mudguard are arranged parallel to each other vertically.

[0008] Furthermore, a mounting bracket is provided on the upper side of one end of the slotted base frame, and the upper end of the mounting bracket is provided with multiple mounting holes.

[0009] Furthermore, the cam drive mechanism includes a transmission rod that is rotatably mounted inside the slotted base frame via a bearing, an eccentric wheel that is rotatably mounted on a vertical limiting plate on the outside of the transmission rod, and an electric motor that is connected to one end of the transmission rod via a gear set.

[0010] Furthermore, the pushing mechanism includes a side pushing plate provided by a hydraulic cylinder and a transverse support, and the transverse support is provided to slide through the limiting sliding hole of the second mudguard.

[0011] Furthermore, the inner wall of the slotted base frame is also provided with a limiting groove, and the two ends of the limiting plate are slidably arranged with the limiting groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model features a transverse vibration mechanism at one end of the grooving base, which includes a first plow and a second plow. The transverse vibration mechanism includes a support rod that is elastically slidably inserted into one end of the grooving base via a limiting plate and a spring. A cam drive mechanism is provided inside the grooving base on one side of the limiting plate. This allows the plow to be transversely vibrated while the equipment drives the plow to move and grooves, effectively breaking through hard soil layers or rocks, thus improving the efficiency of grooving for submarine pipelines. Moreover, the structure is simple and the manufacturing cost is low.

[0014] In this utility model, a first plowshare is provided at one end of the support rod via an inner bracket, and a second plowshare is fixedly provided on the upper side of the first plowshare. The height of the second plowshare is greater than that of the first plowshare, and the opening and closing angle of the second plowshare is greater than that of the first plowshare. The second plowshare increases the grooving range and height of the plowshare, which makes it easier to further improve the grooving efficiency compared to a single plowshare.

[0015] This utility model also provides a pushing mechanism on the outer wall of the second mudguard. The pushing mechanism includes a side pushing plate provided by a hydraulic cylinder and a transverse support. The transverse support slides through the limiting sliding hole of the second mudguard, so that the side pushing plate is continuously reciprocated and adjusted by the hydraulic cylinder, which facilitates pressing the trenched sand on both sides of the trench wall and prevents the sand from being quickly backfilled after trenching. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1This is a first-view structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the second-view structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the third-view structure of this utility model.

[0020] In the diagram: 1. Grooved base frame; 2. Mounting frame; 3. First plowshare; 4. First mudguard; 5. Second plowshare; 6. Second mudguard; 7. Side push plate; 8. Lateral support; 9. Limiting slide hole; 10. Hydraulic cylinder; 11. Inner support; 12. Support rod; 13. Spring; 14. Limiting plate; 15. Limiting slide groove; 16. Mounting hole; 17. Transmission rod; 18. Eccentric wheel; 19. Gear set; 20. Electric motor. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1 , Figure 2 , Figure 3 In this embodiment of the present invention, a subsea pipeline grooving device includes a grooving base frame 1. A mounting bracket 2 is provided on the upper side of one end of the grooving base frame 1, and the upper end of the mounting bracket 2 has multiple mounting holes 16. A transverse vibration mechanism is provided inside one end of the grooving base frame 1, and the transverse vibration mechanism includes a support rod 12 elastically slidably inserted into one end of the grooving base frame 1 via a limiting plate 14 and a spring 13. A cam drive mechanism is provided inside the grooving base frame 1 on one side of the limiting plate 14. The cam drive mechanism includes a transmission rod 17 rotatably disposed inside the grooving base frame 1 via a bearing. An eccentric wheel 18 is provided on the outer side of the transmission rod 17, rotatably disposed perpendicular to the limiting plate 14. One end of the transmission rod 17 is connected by a toothed... The wheel set 19 is connected to the electric motor 20, which drives the transmission rod 17 and the eccentric wheel 18 to rotate continuously and squeeze the limiting plate 14 through the electric motor 20 and the gear set 19. This facilitates the lateral vibration of the plow head. One end of the support rod 12 is equipped with a first plow head 3 through the inner bracket 11. A second plow head 5 is fixed on the upper side of the first plow head 3. The grooving equipment is installed on the grooving hull through the mounting frame 2. The plow head is moved by the transmission to perform grooving. The second plow head 5 is equipped with second mudguards 6 on both sides. The lateral vibration mechanism and the cam drive mechanism perform lateral vibration of the plow head, which can effectively break through hard soil layers or rocks, thus improving the efficiency of grooving for submarine pipelines.

[0023] like Figure 1 and Figure 2 As shown, in order to prevent the sand from being backfilled quickly after the trench is dug, a pushing mechanism is also provided on the outer wall of the second mudguard 6. The pushing mechanism includes a side pushing plate 7 provided by a hydraulic cylinder 10 and a transverse support 8. The transverse support 8 is slidably installed through the limiting sliding hole 9 of the second mudguard 6, so that the side pushing plate 7 can be continuously reciprocated and adjusted by the hydraulic cylinder 10, which makes it easy to press the dug sand onto both sides of the trench wall and prevent the sand from being backfilled quickly after the trench is dug.

[0024] like Figure 1 and Figure 3 As shown, the height of the second plowshare 5 is greater than that of the first plowshare 3, and the opening angle of the second plowshare 5 is greater than that of the first plowshare 3. The second plowshare 5 increases the grooving range and height of the plowshare, which is more convenient to further improve the grooving efficiency compared to a single plowshare. The first plowshare 3 is provided with a first mudguard 4 on one side, and the first mudguard 4 and the second mudguard 6 are arranged parallel to each other vertically to facilitate mud and sand blocking.

[0025] like Figure 2 and Figure 3 As shown, in order to improve the stability of the lateral movement vibration of the plowshare, a limiting groove 15 is also provided on the inner wall of the slotted base frame 1, and the two ends of the limiting plate 14 are slidably set with the limiting groove 15 to guide the lateral movement adjustment of the limiting plate 14, which is beneficial to improving the stability of the lateral movement vibration of the plowshare.

[0026] The working principle and usage process of this utility model are as follows: In use, the grooving equipment is installed on the hull of the grooving vessel through the mounting frame 2. The grooving process is carried out by the transmission driving the plow head to move. Since the grooving base frame 1 is provided with a transverse vibration mechanism at one end, which includes a first plow head 3 and a second plow head 5, the transverse vibration mechanism includes a support rod 12 that is elastically slidably inserted into the inside of one end of the grooving base frame 1 through a limiting plate 14 and a spring 13. The grooving base frame 1 on one side of the limiting plate 14 is provided with a cam drive mechanism, so that when the equipment drives the plow head to move and grooves, the lateral vibration mechanism and the cam drive mechanism can also perform transverse vibration processing on the plow head, which can effectively break through hard soil layers or rocks, and improve the efficiency of grooving for submarine pipelines.

[0027] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A subsea pipeline grooving device, comprising a grooving base frame (1), characterized in that: The slotted base frame (1) is provided with a transverse vibration mechanism at one end, and the transverse vibration mechanism includes a support rod (12) that is elastically slidably inserted into the slotted base frame (1) at one end through a limiting plate (14) and a spring (13). The slotted base frame (1) on one side of the limiting plate (14) is provided with a cam drive mechanism. One end of the support rod (12) is provided with a first plowshare (3) through an inner bracket (11). A second plowshare (5) is fixed on the upper side of the first plowshare (3). A second mudguard (6) is provided on both sides of the second plowshare (5). A pushing mechanism is also provided on the outer wall of the second mudguard (6).

2. The subsea pipeline grooving device according to claim 1, characterized in that: The height of the second plowshare (5) is greater than the height of the first plowshare (3), and the opening and closing angle of the second plowshare (5) is greater than the opening and closing angle of the first plowshare (3).

3. The subsea pipeline grooving device according to claim 2, characterized in that: The first plowshare (3) has a first mudguard (4) on one side, and the first mudguard (4) and the second mudguard (6) are arranged parallel to each other vertically.

4. The subsea pipeline grooving device according to claim 1, characterized in that: The slotted base frame (1) has a mounting bracket (2) on one upper side, and the mounting bracket (2) has multiple mounting holes (16) on its upper end.

5. The subsea pipeline grooving device according to claim 1, characterized in that: The cam drive mechanism includes a transmission rod (17) that is rotatably mounted inside the slotted base frame (1) via a bearing. An eccentric wheel (18) with a vertical limiting plate (14) is provided on the outside of the transmission rod (17). One end of the transmission rod (17) is connected to an electric motor (20) via a gear set (19).

6. The subsea pipeline grooving device according to claim 1, characterized in that: The pushing mechanism includes a side pushing plate (7) provided by a hydraulic cylinder (10) and a transverse support (8), and the transverse support (8) is provided to slide through the limiting sliding hole (9) of the second mudguard (6).

7. The subsea pipeline grooving device according to claim 1, characterized in that: The inner wall of the slotted base frame (1) is also provided with a limiting slide groove (15), and the two ends of the limiting plate (14) are slidably set with the limiting slide groove (15).

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