Submarine pipe ditch sediment backfilling device and method

Abstract

The invention discloses a seabed pipe ditch sediment backfilling device and method.The device comprises a sediment backfilling mechanism, the sediment backfilling mechanism comprises a rotating motor, a first spiral purging device, a second spiral purging device and a flow guide baffle, and when the rotating motor is started, the flow guide baffle rotates around an output shaft of the rotating motor; the water pipe is located right above the seabed pipe ditch; the first lifting rod and the second lifting rod are respectively used for descending the first spiral blowing device and the second spiral blowing device until the first spiral blowing device and the second spiral blowing device are close to silt near the submarine pipe ditch; the first spiral blowing device and the second spiral blowing device are respectively used for blowing silt in front of the first spiral blowing device and the second spiral blowing device and blowing the silt to the flow guide baffle; the flow guide baffle is used for blocking and receiving silt and guiding the silt into the seabed pipe ditch. By the adoption of the seabed pipe ditch sediment backfilling device, sediment near the seabed pipe ditch can be backfilled into the seabed pipe ditch, and the problem that at present, sediment near the seabed pipe ditch cannot be backfilled is solved.

Description

Technical Field

[0001] The present invention relates to the field of marine engineering technology, and in particular to a device and method for backfilling sediment in a submarine trench. Background Art

[0002] In offshore oil and gas development, submarine pipelines are a key component connecting offshore platforms to land terminals. However, impact loads such as dropping anchors, dragging anchors, and trawling can cause submarine pipeline failure. In complex marine environments, hydrodynamic factors such as waves and currents can cause pipelines to become suspended, compromising their safe operation. Trenching and burying pipelines effectively protect submarine pipelines. Traditional trench backfilling methods often rely on manual labor, which is costly and carries significant safety risks.

[0003] In short, the sediment near the submarine trench cannot be backfilled at present, and there is a lack of equipment that can adapt to the complex submarine terrain and effectively promote the sediment deposition in the submarine trench. Summary of the Invention

[0004] In view of the above problems, the purpose of the present invention is to provide a submarine trench sediment backfilling device and method, which is used to solve the problem that the sediment near the submarine trench cannot be backfilled.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present invention discloses a submarine trench sediment backfilling device, comprising a sediment backfilling mechanism, wherein the sediment backfilling mechanism comprises a rotating motor, a first spiral blowing device, a second spiral blowing device and a guide baffle.

[0007] The output shaft of the rotating motor is fixedly connected to the first horizontal rod, the second horizontal rod, and the third horizontal rod; the first spiral blowing device and the second spiral blowing device are fixed to the outer ends of the first horizontal rod and the second horizontal rod respectively through the first lifting rod and the second lifting rod; the guide baffle is provided at the outer end of the third horizontal rod;

[0008] When the rotating motor is started, the first spiral blowing device, the second spiral blowing device and the guide baffle rotate around the output shaft of the rotating motor until the guide baffle rotates to be located directly above the submarine trench and the first spiral blowing device and the second spiral blowing device are located on one side of the submarine trench;

[0009] The first lifting rod and the second lifting rod are used to lower the first spiral blowing device and the second spiral blowing device respectively until they are lowered to the mud and sand near the submarine trench;

[0010] The first spiral blowing device and the second spiral blowing device are respectively used to blow away the sediment in front of them and blow the sediment towards the guide baffle;

[0011] The guide baffle is used to block the mud and sand blown by the first spiral blowing device and the second spiral blowing device, and guide the mud and sand into the submarine trench.

[0012] Preferably, the guide baffle is rectangular in shape and is densely covered with filter holes.

[0013] Furthermore, the first spiral blowing device and the second spiral blowing device each include a spiral barrel, and a plurality of threads are provided on the outer wall of the spiral barrel; the left connecting disk and the right connecting disk are provided at both ends of the spiral barrel of the first spiral blowing device and the second spiral blowing device, respectively, and a motor is provided inside the spiral barrel, and the output shaft of the motor is fixedly connected to the left connecting disk or the right connecting disk; when the motors of the first spiral blowing device and the second spiral blowing device are started, they can drive the spiral barrel to rotate, thereby sweeping the mud and sand in front of it and blowing up the mud and sand.

[0014] Furthermore, the first spiral blowing device and the second spiral blowing device are respectively configured with a first connecting frame and a second connecting frame, the first spiral blowing device is arranged at the bottom end of the first lifting rod through the first connecting frame; the second spiral blowing device is arranged at the bottom end of the second lifting rod through the second connecting frame.

[0015] Furthermore, the first connecting frame and the second connecting frame each include a transverse rod and two vertical rods, and the top ends of the two vertical rods are respectively vertically fixed to the two ends of the transverse rod; the middle part of the transverse rod of the first connecting frame is fixed to the bottom end of the first lifting rod, and the left connecting plate and the right connecting plate at both ends of the spiral cylinder of the first spiral blowing device are respectively fixedly connected to the bottom ends of the two vertical rods of the first connecting frame; the middle part of the transverse rod of the second connecting frame is fixed to the bottom end of the second lifting rod, and the left connecting plate and the right connecting plate at both ends of the spiral cylinder of the second spiral blowing device are respectively fixedly connected to the bottom ends of the two vertical rods of the second connecting frame.

[0016] Furthermore, it also includes a vehicle body, a pillar is provided on the vehicle body, and the rotating motor is provided at the top end of the pillar.

[0017] Furthermore, the vehicle body includes a chassis, and crawler wheels are arranged under the chassis, so that the vehicle body can travel to the vicinity of the submarine trench through the crawler wheels.

[0018] Furthermore, a rangefinder is provided on the bottom surface of the guide baffle.

[0019] Furthermore, it also includes a controller, and the rangefinder, the rotating motor, the motors of the first spiral blowing device and the second spiral blowing device are respectively connected to the controller through wires.

[0020] In a second aspect, the present invention also discloses a method for backfilling sediment in a submarine trench, which uses the above-mentioned device for backfilling sediment in a submarine trench, comprising:

[0021] Step A: transport the sediment backfill mechanism to the vicinity of the submarine trench;

[0022] Step B: starting the rotary motor to rotate the first spiral blowing device, the second spiral blowing device, and the guide baffle around the output shaft of the rotary motor until the guide baffle rotates to be directly above the submarine trench and the first spiral blowing device and the second spiral blowing device are located on one side of the submarine trench;

[0023] Step C: Simultaneously starting the first lifting rod and the second lifting rod to lower the first spiral blowing device and the second spiral blowing device until they are lowered to the mud and sand near the submarine trench;

[0024] Step D: starting the motors of the first spiral blowing device and the second spiral blowing device to drive their respective spiral drums to rotate, sweeping the mud and sand in front of them and blowing up the mud and sand;

[0025] Step E: The guide baffle blocks the sediment swept by the first spiral blowing device and the second spiral blowing device, and guides the sediment into the submarine trench to achieve sediment backfilling into the submarine trench.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The present invention discloses a device for backfilling sediment in a submarine trench, including a sediment backfilling mechanism, which includes a rotating motor, a first spiral purging device, a second spiral purging device and a guide baffle. The output shaft of the rotating motor is fixedly connected to a first horizontal rod, a second horizontal rod and a third horizontal rod. The first spiral purging device and the second spiral purging device are fixed to the outer ends of the first horizontal rod and the second horizontal rod respectively through a first lifting rod and a second lifting rod. The guide baffle is provided at the outer end of the third horizontal rod. When the rotating motor is started, the first spiral purging device, the second spiral purging device and the guide baffle surround the rotating motor. The output shaft of the machine rotates until the guide baffle rotates to be located directly above the submarine trench, and the first spiral blowing device and the second spiral blowing device are located on one side of the submarine trench; wherein the first lifting rod and the second lifting rod are respectively used to lower the first spiral blowing device and the second spiral blowing device until they are lowered to the mud and sand near the submarine trench; the first spiral blowing device and the second spiral blowing device are respectively used to sweep the mud and sand in front of them and blow the mud and sand toward the guide baffle; the guide baffle is used to receive the mud and sand swept by the first spiral blowing device and the second spiral blowing device and guide the mud and sand into the submarine trench. The submarine trench mud and sand backfilling device disclosed in the present invention can backfill the mud and sand near the submarine trench into the submarine trench, solving the current problem that mud and sand near the submarine trench cannot be backfilled, which is of great significance to improving the technical level of marine oil and gas engineering. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A three-dimensional axonometric view of the submarine trench sediment backfilling device provided in Example 1 of the present invention;

[0029] Figure 2 A front view of the submarine trench sediment backfilling device provided in Example 1 of the present invention;

[0030] Figure 3 A side view of the submarine trench sediment backfilling device provided in Example 1 of the present invention;

[0031] Figure 4 This is a top view of the submarine trench sediment backfilling device provided in Example 1 of the present invention.

[0032] Description of reference numerals:

[0033] 1- Rotating motor;

[0034] 21-first spiral purge device, 210-first connecting frame, 22-second spiral purge device, 220-second connecting frame, 23-flow guide baffle, 230-filter hole;

[0035] 31-first horizontal rod, 32-second horizontal rod, 33-third horizontal rod;

[0036] 41-first lifting rod, 42-second lifting rod;

[0037] 5-body, 50-chassis, 51-pillar, 52-track;

[0038] 6- Rangefinder. DETAILED DESCRIPTION

[0039] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0040] Example 1: A submarine trench sediment backfilling device

[0041] Embodiment 1 of the present invention provides a submarine trench sediment backfilling device, and its structure is described in detail below with reference to the accompanying drawings.

[0042] refer to Figures 1 to 4 The submarine trench sediment backfilling device includes a sediment backfilling mechanism, which includes a rotating motor 1, a first spiral blowing device 21, a second spiral blowing device 22 and a guide baffle 23.

[0043] The output shaft of the rotating motor 1 is fixedly connected to the first horizontal rod 31, the second horizontal rod 32, and the third horizontal rod 33. The first spiral blowing device 21 and the second spiral blowing device 22 are fixed to the outer ends of the first horizontal rod 31 and the second horizontal rod 32 through the first lifting rod 41 and the second lifting rod 42 respectively. The guide baffle 23 is set at the outer end of the third horizontal rod 33.

[0044] When the rotating motor 1 is started, the first spiral blowing device 21, the second spiral blowing device 22 and the guide baffle 23 rotate around the output shaft of the rotating motor 1 until the guide baffle 23 rotates to be located directly above the submarine trench, and the first spiral blowing device 21 and the second spiral blowing device 22 are located on one side of the submarine trench.

[0045] The first lifting rod 41 and the second lifting rod 42 are used to lower the first spiral blowing device 21 and the second spiral blowing device 22 respectively until they are lowered to the mud and sand near the submarine trench.

[0046] The first spiral blowing device 21 and the second spiral blowing device 22 are respectively used to blow away the mud and sand in front of them and blow the mud and sand toward the guide baffle 23 .

[0047] The guide baffle 23 is used to block the mud and sand blown by the first spiral blowing device 21 and the second spiral blowing device 22, and guide the mud and sand into the submarine trench.

[0048] Specifically, the guide baffle 23 is rectangular in shape and is densely covered with filter holes 230 .

[0049] Specifically, the first spiral blowing device 21 and the second spiral blowing device 22 each include a spiral barrel, and a plurality of threads are provided on the outer wall of the spiral barrel;

[0050] The first spiral blowing device 21 and the second spiral blowing device 22 are provided with a left connecting disk and a right connecting disk at both ends of the spiral cylinder respectively. A motor is provided inside the spiral cylinder, and the output shaft of the motor is fixedly connected to the left connecting disk or the right connecting disk;

[0051] When the motors of the first spiral blowing device 21 and the second spiral blowing device 22 are started, the spiral drums can be driven to rotate, thereby sweeping away the mud and sand in front of them and blowing up the mud and sand.

[0052] More specifically, the first spiral blowing device 21 and the second spiral blowing device 22 are respectively equipped with a first connecting frame 210 and a second connecting frame 220.

[0053] The first spiral blowing device 21 is arranged at the bottom end of the first lifting rod 41 through the first connecting frame 210;

[0054] The second spiral blowing device 22 is disposed at the bottom end of the second lifting rod 42 via a second connecting frame 220 .

[0055] Furthermore, each of the first connecting frame 210 and the second connecting frame 220 includes a transverse rod and two vertical rods, and the top ends of the two vertical rods are respectively vertically fixed to the two ends of the transverse rod;

[0056] The middle portion of the transverse rod of the first connecting frame 210 is fixed to the bottom end of the first lifting rod 41, and the left connecting plate and the right connecting plate at both ends of the spiral cylinder of the first spiral blowing device 21 are respectively fixedly connected to the bottom ends of the two vertical rods of the first connecting frame 210;

[0057] The middle part of the horizontal rod of the second connecting frame 220 is fixed to the bottom end of the second lifting rod 42, and the left connecting plate and the right connecting plate at both ends of the spiral cylinder of the second spiral blowing device 22 are respectively fixedly connected to the bottom ends of the two vertical rods of the second connecting frame 220.

[0058] In order to facilitate the transportation of the sediment backfilling mechanism to the vicinity of the submarine trench, the submarine trench sediment backfilling device further includes a vehicle body 5 , on which a pillar 51 is provided, and the rotating motor 1 is provided at the top of the pillar 51 .

[0059] Specifically, the vehicle body 5 includes a chassis 50 , and crawler wheels 52 are disposed below the chassis 50 . The vehicle body 5 can travel to the vicinity of the submarine pipeline trench via the crawler wheels 52 .

[0060] In order to measure the height change between the bottom surface of the submarine trench and the distance meter 6, a distance meter 6 is provided on the bottom surface of the guide baffle 23. Specifically, the distance meter 6 is an ultrasonic detection device.

[0061] In order to improve the automatic control capability of the submarine trench sediment backfilling device, the submarine trench sediment backfilling device further includes a controller, and the rangefinder 6, the rotating motor 1, the first spiral blowing device 21 and the second spiral blowing device 22 are respectively connected to the controller through wires.

[0062] Specifically, the controller is disposed in the chassis 50 .

[0063] Example 2: A method for backfilling sediment in a submarine trench

[0064] Embodiment 2 of the present invention provides a method for backfilling sediment in a submarine trench, using the apparatus for backfilling sediment in the submarine trench of embodiment 1. The method includes the following steps:

[0065] Step A: transport the sediment backfill mechanism to the vicinity of the submarine trench;

[0066] Step B: Starting the rotary motor 1 to rotate the first spiral blowing device 21, the second spiral blowing device 22, and the guide baffle 23 around the output shaft of the rotary motor 1 until the guide baffle 23 rotates to be directly above the submarine trench, and the first spiral blowing device 21 and the second spiral blowing device 22 are located on one side of the submarine trench;

[0067] Step C: Simultaneously start the first lifting rod 41 and the second lifting rod 42 to lower the first spiral blowing device 21 and the second spiral blowing device 22 until they are lowered to the mud and sand near the submarine trench;

[0068] Step D: starting the motors of the first spiral blowing device 21 and the second spiral blowing device 22 to drive their respective spiral drums to rotate, sweeping the mud and sand in front of them and blowing up the mud and sand;

[0069] Step E: The guide baffle 23 blocks the sediment swept by the first spiral blowing device 21 and the second spiral blowing device 22 and guides the sediment into the submarine trench to achieve sediment backfilling into the submarine trench.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A submarine trench sediment backfilling device, characterized in that: The invention comprises a sediment backfilling mechanism, wherein the sediment backfilling mechanism comprises a rotating motor (1), a first spiral blowing device (21), a second spiral blowing device (22) and a guide baffle (23). The output shaft of the rotating motor (1) is fixedly connected to a first horizontal rod (31), a second horizontal rod (32), and a third horizontal rod (33); the first spiral blowing device (21) and the second spiral blowing device (22) are fixed to the outer ends of the first horizontal rod (31) and the second horizontal rod (32) via a first lifting rod (41) and a second lifting rod (42), respectively; and the guide baffle (23) is provided on the outer end of the third horizontal rod (33); When the rotating motor (1) is started, the first spiral blowing device (21), the second spiral blowing device (22) and the guide baffle (23) rotate around the output shaft of the rotating motor (1) until the guide baffle (23) rotates to be located directly above the submarine trench, and the first spiral blowing device (21) and the second spiral blowing device (22) are located on one side of the submarine trench; The first lifting rod (41) and the second lifting rod (42) are respectively used to lower the first spiral blowing device (21) and the second spiral blowing device (22) until they are lowered to the mud and sand near the submarine trench; The first spiral blowing device (21) and the second spiral blowing device (22) are respectively used to blow away the mud and sand in front of them, and blow the mud and sand towards the guide baffle (23); The guide baffle (23) is used to block the mud and sand swept by the first spiral blowing device (21) and the second spiral blowing device (22), and guide the mud and sand into the submarine trench.

2. The submarine trench sediment backfilling device according to claim 1, characterized in that: The guide baffle (23) is rectangular in shape and is densely covered with filter holes (230).

3. The submarine trench sediment backfilling device according to claim 1, characterized in that: The first spiral blowing device (21) and the second spiral blowing device (22) each comprise a spiral barrel, and a plurality of threads are provided on the outer wall of the spiral barrel; The spiral barrels of the first spiral blowing device (21) and the second spiral blowing device (22) are respectively provided with a left connecting disk and a right connecting disk, and a motor is provided inside the spiral barrel, and the output shaft of the motor is fixedly connected to the left connecting disk or the right connecting disk; When the motors of the first spiral blowing device (21) and the second spiral blowing device (22) are started, the spiral drums can be driven to rotate, thereby sweeping away the mud and sand in front of them and blowing up the mud and sand.

4. The submarine trench sediment backfilling device according to claim 3, characterized in that: The first spiral blowing device (21) and the second spiral blowing device (22) are respectively equipped with a first connecting frame (210) and a second connecting frame (220). The first spiral blowing device (21) is arranged at the bottom end of the first lifting rod (41) through a first connecting frame (210); The second spiral blowing device (22) is arranged at the bottom end of the second lifting rod (42) via a second connecting frame (220).

5. The submarine trench sediment backfilling device according to claim 4, characterized in that: The first connecting frame (210) and the second connecting frame (220) each include a transverse rod and two vertical rods, and the top ends of the two vertical rods are respectively vertically fixed to the two ends of the transverse rod; The middle portion of the transverse rod of the first connecting frame (210) is fixed to the bottom end of the first lifting rod (41), and the left connecting disk and the right connecting disk at both ends of the spiral cylinder of the first spiral blowing device (21) are respectively fixedly connected to the bottom ends of the two vertical rods of the first connecting frame (210); The middle part of the transverse rod of the second connecting frame (220) is fixed to the bottom end of the second lifting rod (42), and the left connecting disk and the right connecting disk at both ends of the spiral cylinder of the second spiral blowing device (22) are respectively fixedly connected to the bottom ends of the two vertical rods of the second connecting frame (220).

6. The submarine trench sediment backfilling device according to claim 1, characterized in that: The vehicle also includes a vehicle body (5), wherein a support column (51) is provided on the vehicle body (5), and the rotating motor (1) is provided at the top end of the support column (51).

7. The submarine trench sediment backfilling device according to claim 6, characterized in that: The vehicle body (5) includes a chassis (50), and crawler wheels (52) are arranged below the chassis (50). The vehicle body (5) can travel to the vicinity of a submarine trench via the crawler wheels (52).

8. The submarine trench sediment backfilling device according to claim 1, characterized in that: A distance meter (6) is provided on the bottom surface of the guide baffle (23).

9. The submarine trench sediment backfilling device according to claim 8, characterized in that: It also includes a controller, and the distance meter (6), the rotating motor (1), the motors of the first spiral blowing device (21) and the second spiral blowing device (22) are respectively connected to the controller through wires.

10. A method for backfilling sediment in a submarine trench, using the submarine trench backfilling sediment device according to any one of claims 1 to 9, comprising: Step A: transport the sediment backfill mechanism to the vicinity of the submarine trench; Step B: starting the rotary motor (1) to rotate the first spiral blowing device (21), the second spiral blowing device (22), and the guide baffle (23) around the output shaft of the rotary motor (1) until the guide baffle (23) rotates to be located directly above the submarine trench, and the first spiral blowing device (21) and the second spiral blowing device (22) are located on one side of the submarine trench; Step C: Simultaneously starting the first lifting rod (41) and the second lifting rod (42) to lower the first spiral blowing device (21) and the second spiral blowing device (22) until they are lowered to the mud and sand near the submarine trench; Step D: starting the motors of the first spiral blowing device (21) and the second spiral blowing device (22), driving the respective spiral drums to rotate, blowing away the mud and sand in front of each, and blowing up the mud and sand; Step E: The guide baffle (23) blocks the silt swept by the first spiral sweeping device (21) and the second spiral sweeping device (22), and guides the silt into the submarine trench, thereby backfilling the submarine trench with silt.

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