An adjustable modular high-pressure jet trenching equipment

Abstract

The present invention provides an adjustable modular high-pressure jet trenching equipment, which belongs to the technical field of marine engineering equipment. The adjustable modular high-pressure jet trenching equipment includes a hanger and a trenching machine main frame, and is characterized in that a high-pressure jet nozzle, a front spray arm, and a high-pressure jet pump are installed on the trenching machine main frame, and the high-pressure jet nozzle includes a rigid crossbeam and a plurality of high-pressure jet nozzle modules. The high-pressure jet nozzle is fixed to the hanger through a fixed rotating shaft, and a hydraulic push rod is installed on the fixed rotating shaft, and the hydraulic push rod connects the fixed rotating shaft and the trenching machine main frame; the high-pressure jet nozzle module is installed under the rigid crossbeam, and the high-pressure jet nozzle module includes an installation and fixing hole for connecting with the rigid crossbeam, a high-pressure jet pipeline, a mud and water suction pipeline, a connecting hole and a high-pressure nozzle. The invention can realize the adjustment of the seabed excavation depth and the digging angle of the trenching machine.

Description

Technical Field

[0001] The present invention belongs to the technical field of marine engineering equipment, and in particular, relates to an adjustable modular high-pressure jet trenching device. Background Art

[0002] At present, with the increasing dependence of my country on energy demand, the development and utilization of marine oil and gas resources are developing unprecedentedly. As an important part of the field of marine engineering technology, submarine trenching technology is increasingly showing its pivotal position. In submarine oil (gas) pipelines, submarine pipeline trenchers are important equipment for burying and protecting submarine pipelines. The pipelines are located on the seabed, and most of them need to be buried at a certain depth in the seabed soil. Some pipelines in wave breaking zones or tidal zones are greatly affected by wind, waves, tides, etc., and may sometimes be damaged by factors such as collisions with floating objects in the sea or ship anchoring. Therefore, to ensure that submarine pipelines do not have accidents within their designed service life and to achieve safe transportation of oil and gas resources, it is generally necessary to bury and protect submarine pipelines, and trenching equipment is required for the buried protection of pipelines. Trenching equipment is one of the key components of submarine trenchers. Nowadays, trenching machines in the world mostly use a combination of mechanical and hydraulic jetting.

[0003] The Chinese invention patent with publication number CN111456135A (application number CN202010362197.9) provides a large-diameter jet trencher, including a frame, a high-pressure pump is arranged on the frame, two parallel downward nozzle seats are arranged at the front end of the frame, a plurality of forward nozzles are arranged in a row on the nozzle seats, and the nozzles are connected to the water outlet of the high-pressure pump. Two high-pressure jet pumps are also arranged on the frame, and the two high-pressure jet pumps are located on both sides of the nozzle. An umbilical cable is connected to the high-pressure pump and skids are arranged on both sides of the lower end of the frame. An umbilical cable connection seat is arranged on the frame, which can effectively protect the umbilical cable and has high stability in use.

[0004] This invention cannot realize the adjustment of the seabed excavation depth and the digging angle of the trencher. Summary of the invention

[0005] In view of this, the present invention provides an adjustable modular high-pressure jet trenching device, which can adjust the seabed excavation depth and excavation angle of the trencher.

[0006] The present invention is achieved in that:

[0007] The present invention provides an adjustable modular high-pressure jet trenching equipment, comprising a hanger and a trencher main frame, wherein the hanger and the trencher main frame are connected via the hanger legs of the hanger and the bell mouth of the trencher main frame; a sliding shoe is installed at the bottom of the trencher main frame; wherein a high-pressure jet nozzle, a front spray arm, and a high-pressure jet pump are installed on the trencher main frame, and the high-pressure jet nozzle has two rows.

[0008] The technical effects of the adjustable modular high-pressure jet trenching equipment provided by the present invention are as follows: when the trenching machine encounters a soil layer with low strength, the jet velocity and jet direction can be automatically adjusted by setting a front spray arm, thereby effectively reducing the energy consumption during the operation of the trenching machine; by setting a sliding shoe, it is beneficial for the trenching equipment to move forward smoothly on the seabed.

[0009] On the basis of the above technical solution, the adjustable modular high-pressure jet ditching equipment of the present invention can also be improved as follows:

[0010] Among them, the high-pressure jet nozzle includes a rigid crossbeam and multiple high-pressure jet nozzle modules, the high-pressure jet nozzle is fixed to the hanger through a fixed rotating shaft, a hydraulic push rod is installed on the fixed rotating shaft, and the hydraulic push rod connects the fixed rotating shaft and the main frame of the trencher; the high-pressure jet nozzle module is installed under the rigid crossbeam, and a high-pressure jet pipeline and a mud and water suction pipeline are passed through the high-pressure jet nozzle module, and a mud and water suction port is provided on the mud and water suction pipeline at the front end of the high-pressure jet nozzle module, wherein the rigid crossbeam and the high-pressure jet pipeline together constitute an underwater trenching system.

[0011] Furthermore, the high-pressure jet nozzle module includes an installation and fixing hole for connecting to a rigid crossbeam, the high-pressure jet pipeline, the mud and water suction pipeline, a connecting hole and a high-pressure nozzle. The mud and water suction pipeline and the high-pressure jet pipeline pass through the high-pressure jet nozzle module. One side of the high-pressure jet nozzle module is an injection surface, and the bottom of the injection surface has a cut angle. The connecting hole is arranged at the top of the cut angle, and the high-pressure nozzle is connected to the high-pressure jet pipeline and is arranged at the bottom of the cut angle.

[0012] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by setting up high-pressure jet nozzle modules, they can be freely combined according to engineering needs, thereby changing the number of high-pressure nozzles in the two rows of high-pressure jet nozzles; at the same time, by using high-pressure nozzles with closed or open high-pressure jet nozzle modules, the spacing between different high-pressure jet nozzle modules can be adjusted, which can be suitable for different seabed soils (sand, clay, etc.); the high-pressure jet nozzle can automatically adjust the water flow pressure and water flow rate according to the seabed soil, so as to achieve more efficient ground breaking; by setting connecting holes, the high-pressure jet nozzle modules can be conveniently connected to save operation time.

[0013] Furthermore, sealing rings are attached inside the high-pressure jet pipeline and the mud and water suction pipeline.

[0014] The beneficial effect of adopting the above-mentioned improvement scheme is: by providing a sealing ring, the sealing between the high-pressure jet nozzle modules is improved, ensuring the normal operation of the high-pressure jet pipeline and the muddy water suction pipeline.

[0015] Furthermore, the high-pressure nozzle has a plurality of nozzles at different angles.

[0016] The beneficial effect of adopting the above-mentioned improvement scheme is that by arranging the high-pressure nozzles with nozzles of different angles, the spraying angle can be made wider and the soil breaking efficiency can be improved.

[0017] Furthermore, a plurality of weight-reducing holes are provided in the high-pressure jet nozzle module.

[0018] The beneficial effect of adopting the above-mentioned improvement scheme is that the weight of the high-pressure jet nozzle module can be reduced by providing the weight-reducing holes, thereby saving the electrical energy consumption of the trenching machine.

[0019] Furthermore, the weight-reducing holes are of different sizes and shapes.

[0020] The beneficial effect of adopting the above-mentioned improvement scheme is: through the above-mentioned setting, the size and shape of the weight-reducing hole can be adjusted according to the needs, so that the weight-reducing hole reduces the weight of the earring and is more suitable for the high-pressure jet nozzle module.

[0021] Furthermore, a rigid round tube is installed in the middle of the rigid crossbeam, a steel beam locking block is provided at the end of the rigid crossbeam, and the high-pressure jet nozzle module is installed on the rigid crossbeam through the installation hole.

[0022] The beneficial effects of adopting the above-mentioned improvement scheme are: by installing a rigid round tube, the rigidity of the rigid beam can be enhanced to ensure high-intensity operation of the trencher; by setting a steel beam locking block, the high-pressure jet nozzle module can be prevented from slipping on the rigid beam and affecting the trenching operation.

[0023] Wherein, two high-pressure water flow flushing pipes are installed inside the high-pressure jet nozzle.

[0024] The beneficial effect of adopting the above-mentioned improvement scheme is: by installing a high-pressure water flushing pipe, the soil inside the high-pressure jet nozzle can be flushed and stirred for the second time, thereby forming a uniform mud. The mud will be pumped away through the mud and water suction pipeline to avoid affecting the operation of the trenching equipment.

[0025] Wherein, a drag buckle is arranged at the front end of the sliding shoe.

[0026] The beneficial effect of adopting the above-mentioned improvement scheme is: by setting a towing buckle, a force application point is provided for the rope, making it convenient to tow the trenching equipment forward.

[0027] Compared with the prior art, the adjustable modular high-pressure jet trenching equipment provided by the present invention has the following beneficial effects: when the trenching machine encounters a soil layer with low strength, the jet velocity and jet direction can be automatically adjusted by setting a front jet impact arm, thereby effectively reducing the energy consumption during the operation of the trenching machine; by setting a sliding shoe, it is beneficial for the trenching equipment to move forward smoothly on the seabed; by setting a fixed rotating shaft, the underwater trenching system can rotate around the trenching machine main frame, thereby realizing the adjustment of the excavation depth; the excavation depth of the trenching equipment is realized by the pushing action of the hydraulic push rod, and the variation range is 3m-5m, which is greater than the excavation depth of the current domestic trenching machines; by setting a high-pressure jet The flow nozzle modules can be freely combined according to the needs of the project, so as to change the number of high-pressure nozzles in the two rows of high-pressure jet nozzles; at the same time, by using a high-pressure nozzle with a closed or open high-pressure jet nozzle module, the spacing between different high-pressure jet nozzle modules can be adjusted, which can be suitable for different seabed soils (sand, clay, etc.); the high-pressure jet nozzle can automatically adjust the water flow pressure and water flow according to the seabed soil to achieve more efficient ground breaking; by installing a high-pressure water flushing pipe, the soil inside the high-pressure jet nozzle can be flushed and stirred for the second time to form a uniform mud, which will be pumped away through the mud and water suction pipeline to avoid affecting the work of the trenching equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0029] Figure 1 A schematic diagram of an adjustable modular high-pressure jet ditching device is provided for the present invention;

[0030] Figure 2 A schematic diagram of a front spray arm in an adjustable modular high-pressure jet trenching device is provided for the present invention;

[0031] Figure 3 A schematic diagram of a high-pressure jet nozzle in an adjustable modular high-pressure jet trenching device is provided for the present invention;

[0032] Figure 4 A schematic diagram of a high-pressure jet nozzle module in an adjustable modular high-pressure jet trenching device is provided for the present invention;

[0033] Figure 5 A schematic diagram of a rigid crossbeam in an adjustable modular high-pressure jet ditching device is provided for the present invention;

[0034] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0035] 10. Hanger; 101. Hanger leg; 20. Main frame of trencher; 201. Bell mouth; 21. High-pressure jet nozzle; 211. Rigid crossbeam; 212. Fixed rotating shaft; 213. High-pressure jet pipeline; 214. Mud and water suction pipeline; 215. Mud and water suction port; 216. High-pressure jet nozzle module; 217. Hydraulic push rod; 22. Front spray arm; 23. High-pressure jet pump; 31. High-pressure water flushing pipe; 41. Mounting fixing hole; 42. Connecting hole; 43. High-pressure nozzle; 44. Sealing ring; 45. Weight reduction hole; 46. Rigid round tube; 47. Steel beam locking block; 48. Mounting gap; 50. Slipper; 51. Drag buckle. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] Furthermore, in the description of the present invention, “plurality” means two or more than two, unless otherwise clearly and specifically defined.

[0041] like Figure 1-2 As shown, it is a first embodiment of an adjustable modular high-pressure jet trenching equipment provided by the present invention. In this embodiment, it includes a hanger 10 and a trencher main frame 20. The hanger 10 and the trencher main frame 20 are connected through the hanger legs 101 of the hanger 10 and the bell mouth 201 of the trencher main frame 20; a sliding shoe 50 is installed at the bottom of the trencher main frame 20; wherein, a high-pressure jet nozzle 21, a front spray arm 22, and a high-pressure jet pump 23 are installed on the trencher main frame 20, and the high-pressure jet nozzle 21 has two rows.

[0042] like Figure 3 As shown, in the above technical solution, the high-pressure jet nozzle 21 includes a rigid crossbeam 211 and a plurality of high-pressure jet nozzle modules 216. The high-pressure jet nozzle 21 is fixed to the hanger 10 through a fixed rotating shaft 212. A hydraulic push rod 217 is installed on the fixed rotating shaft 212. The hydraulic push rod 217 connects the fixed rotating shaft 212 and the trencher main frame 20; the high-pressure jet nozzle module 216 is installed under the rigid crossbeam 211. A high-pressure jet pipeline 213 and a mud and water suction pipeline 214 are passed through the high-pressure jet nozzle module 216. A mud and water suction port 215 is mounted on the mud and water suction pipeline 214 at the front end of the high-pressure jet nozzle module 216, wherein the rigid crossbeam 211 and the high-pressure jet pipeline 213 together constitute an underwater trenching system.

[0043] like Figure 4 As shown, further, in the above technical scheme, the high-pressure jet nozzle module 216 includes an installation and fixing hole 41 for connecting to the rigid crossbeam 211, a high-pressure jet pipeline 213, a mud and water suction pipeline 214, a connecting hole 42 and a high-pressure nozzle 43. The mud and water suction pipeline 214 and the high-pressure jet pipeline 213 pass through the high-pressure jet nozzle module 216. One side of the high-pressure jet nozzle module 216 is an injection surface, and the bottom of the injection surface has a cut angle. The connecting hole 42 is arranged at the top of the cut angle, and the high-pressure nozzle 43 is connected to the high-pressure jet pipeline 213 and is arranged at the bottom of the cut angle.

[0044] When in use, the high-pressure jet nozzle module 216 is assembled according to the seabed soil, and then the trenching equipment is placed in the designated waters. When the sliding shoes on both sides contact the seabed soil, the high-pressure jet nozzle 21 is started, and the nozzle begins to spray a large flow and high-speed water flow; at the same time, the hydraulic push rod 217 fixedly connected to the trenching machine main frame 20 starts to work, and the hydraulic push rod 217 pushes the high-pressure jet nozzle 21 to rotate around the fixed rotating shaft 212, thereby changing the excavation angle of the underwater trenching and adjusting the trenching depth of the seabed, thereby reaching a predetermined trenching depth;

[0045] During the operation of the trenching equipment, when encountering a soil layer with low strength, the front spray arm 22 at the front end of the trenching equipment will automatically adjust the jet velocity and jet direction, thereby effectively reducing the energy consumption during the operation of the trenching equipment;

[0046] The high-pressure jet nozzle 21 installed at the lower part of the rigid crossbeam 211 of the trenching equipment uses high-pressure and high-speed water flow to perform jet excavation on the seabed soil. The high-pressure jet nozzle 21 can rotate around the fixed rotating shaft 212 through the hydraulic push rod 217 fixedly connected to the rigid crossbeam 211, thereby adjusting the excavation angle between the seabed soil.

[0047] Furthermore, in the above technical solution, sealing rings 44 are attached inside the high-pressure jet pipeline 213 and the muddy water suction pipeline 214 .

[0048] Furthermore, in the above technical solution, the high-pressure nozzle 43 has a plurality of nozzles with different angles.

[0049] Furthermore, in the above technical solution, a plurality of weight-reducing holes 45 are provided in the high-pressure jet nozzle module 216 .

[0050] Furthermore, in the above technical solution, the weight-reducing holes 45 are of different sizes and shapes.

[0051] like Figure 5 As shown, further, in the above technical solution, a rigid round tube 46 is installed in the middle of the rigid beam 211, a steel beam locking block 47 is provided at the end of the rigid beam 211, and the high-pressure jet nozzle module 216 is installed on the rigid beam 211 through the installation hole 48.

[0052] Among them, in the above technical solution, two high-pressure water flow flushing pipes 31 are installed inside the high-pressure jet nozzle 21.

[0053] Two high-pressure water flushing pipes 31 are arranged inside the high-pressure jet nozzle 21, which are used for secondary flushing and stirring of the soil inside the high-pressure jet nozzle 21, so as to form uniform mud, which will be pumped away through the mud and water suction pipeline 214; the high-pressure water flow required by the mud and water suction pipeline 214 is transmitted through the high-pressure jet pipeline 213, and a three-way valve is connected to the tail end of the high-pressure jet pipeline 213. The three-way valve diverts the high-pressure water, one channel of high-pressure water is used to stir the soil inside the high-pressure jet nozzle 21, and the other channel of high-pressure water is supplied to the high-pressure nozzle 43 between the blade teeth.

[0054] Among them, in the above technical solution, a drag buckle 51 is provided at the front end of the sliding shoe 50 .

[0055] Specifically, the principle of the present invention is: first, assemble the high-pressure jet nozzle module 216 according to the seabed soil, then put the trenching equipment into the designated waters, and when the sliding shoes on both sides contact the seabed soil, start the high-pressure jet nozzle 21, and the nozzle starts to spray large-flow, high-speed water flow; at the same time, the hydraulic push rod 217 fixedly connected to the trenching machine main frame 20 starts to work, and the hydraulic push rod 217 pushes the trenching machine main frame to rotate around the fixed rotating shaft 212, so as to change the excavation angle of underwater trenching and adjust the trenching depth of the seabed, thereby reaching the predetermined trenching depth; during the operation of the trenching equipment, when encountering a soil layer with lower strength, the front spray arm 22 at the front end of the trenching equipment will automatically adjust the jet velocity and jet direction, thereby effectively reducing the energy consumption during the operation of the trenching equipment; the high-pressure jet nozzle 21 installed at the lower part of the rigid crossbeam 211 of the trenching equipment uses high-pressure, high-speed water flow to perform jet excavation on the seabed soil.

[0056] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An adjustable modular high-pressure jet trenching device, comprising a hanger (10) and a trenching machine main frame (20), wherein the hanger (10) and the trenching machine main frame (20) are connected via a hanger leg (101) of the hanger (10) and a bell mouth (201) of the trenching machine main frame (20); a sliding shoe (50) is installed at the bottom of the trenching machine main frame (20); characterized in that: The trenching machine main frame (20) is equipped with a high-pressure jet nozzle (21), a front spray arm (22), and a high-pressure jet pump (23). The high-pressure jet nozzle (21) has two rows. The high-pressure jet nozzle (21) includes a rigid crossbeam (211) and a plurality of high-pressure jet nozzle modules (216). The high-pressure jet nozzle (21) is fixed to the hanger (10) via a fixed rotating shaft (212). A hydraulic push rod (217) is installed on the fixed rotating shaft (212). The hydraulic push rod (217) connects the fixed rotating shaft (212) and the trenching machine main frame (20). The high-pressure jet nozzle module (216) is installed under the rigid crossbeam (211). A high-pressure jet pipeline (213) and a muddy water suction pipeline (214) are passed through the high-pressure jet nozzle module (216). ) The mud and water suction pipe (214) at the front end is provided with a mud and water suction port (215), wherein the rigid crossbeam (211) and the high-pressure jet pipe (213) together form an underwater trenching system; the high-pressure jet nozzle module (216) comprises a mounting fixing hole (41) for connecting with the rigid crossbeam (211), the high-pressure jet pipe (213), the mud and water suction pipe (214), a connecting hole (42) and a high-pressure nozzle (43); the mud and water suction pipe (214) and the high-pressure jet pipe (213) penetrate the high-pressure jet nozzle module (216); one side of the high-pressure jet nozzle module (216) is a spraying surface, the bottom of the spraying surface has a cut angle, the connecting hole (42) is arranged at the top of the cut angle, and the high-pressure nozzle (43) is connected to the high-pressure jet pipe (213) and is arranged at the bottom of the cut angle.

2. The adjustable modular high-pressure jet trenching device according to claim 1, characterized in that: Sealing rings (44) are attached inside the high-pressure jet pipeline (213) and the muddy water suction pipeline (214).

3. The adjustable modular high-pressure jet trenching device according to claim 1, characterized in that: The high-pressure nozzle (43) has a plurality of nozzles at different angles.

4. The adjustable modular high-pressure jet trenching device according to claim 1, characterized in that: A plurality of weight-reducing holes (45) are provided in the high-pressure jet nozzle module (216).

5. The adjustable modular high-pressure jet trenching device according to claim 4, characterized in that: The weight-reducing holes (45) are of different sizes and shapes.

6. The adjustable modular high-pressure jet trenching device according to claim 1, characterized in that: A rigid round tube (46) is installed in the middle of the rigid crossbeam (211), a steel beam locking block (47) is provided at the end of the rigid crossbeam (211), and the high-pressure jet nozzle module (216) is installed on the rigid crossbeam (211) through a mounting hole (48).

7. The adjustable modular high-pressure jet trenching device according to claim 1, characterized in that: Two high-pressure water flow flushing pipes (31) are installed inside the high-pressure jet nozzle (21).

8. The adjustable modular high-pressure jet trenching device according to claim 1, characterized in that: The front end of the sliding shoe (50) is provided with a drag buckle (51).

Images