Multi-pipe cable supporting system suitable for deep-sea mining

Abstract

The invention discloses a multi-pipe-cable supporting system suitable for deep-sea mining, and relates to the technical field of marine resource development equipment, the multi-pipe-cable supporting system comprises a mooring assembly and a reclaimed water buoy arranged on the mooring assembly, a mining vertical pipe is arranged at the top of the reclaimed water buoy, and the mooring assembly comprises a mooring cable and a gravity anchor arranged at the bottom of the mooring cable; the reclaimed water buoy comprises symmetrically arranged orthogonal grid reinforcing frameworks, a pipe cable bearing plate is arranged at the tops of the orthogonal grid reinforcing frameworks, capsule type buoy units are symmetrically arranged in a space formed by the orthogonal grid reinforcing frameworks and the pipe cable bearing plate, the mooring rope is connected with the orthogonal grid reinforcing frameworks, and the mining vertical pipe is erected on the pipe cable bearing plate; by integrating the reclaimed water buoy, the symmetrical mooring assembly and the modularized double-arm connecting rod structure, the dynamic response of the vertical pipe is effectively restrained in deep-sea mining operation, space interference between the vertical pipe and the cable can be prevented, and the system stability, the operation safety and the mineral conveying efficiency are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ocean resource development equipment, and particularly to a multi-pipeline cable support system suitable for deep-sea mining. BACKGROUND

[0002] In a deep-sea mining system, a riser serves as a key channel for transporting mineral resources from the seabed to the water surface, and is the core hub of the entire equipment.

[0003] In the prior art, in order to optimize the riser configuration, a design scheme of arranging buoyancy blocks is generally adopted. However, this traditional arrangement has significant defects in actual dynamic operation: since the buoyancy blocks are usually distributed discretely and connected to the riser in a rigid or flexible manner, the riser is prone to large swing and torsional deformation under the action of complex sea currents and waves, resulting in spatial interference with adjacent mining vehicle power cables, control cables and other auxiliary pipelines, and even causing hard collision.

[0004] Such interference and collision not only directly damage the structural integrity of the riser and cables, causing interruption of mineral transportation and rising of equipment maintenance costs, but also affect the stability of signal transmission and power supply due to cable winding and frictional wear, seriously restricting the continuous operation efficiency and safety of the mining system.

[0005] Therefore, the present application provides a multi-pipeline cable support system suitable for deep-sea mining to solve the above problems. SUMMARY

[0006] The purpose of the present application is to provide a multi-pipeline cable support system suitable for deep-sea mining, which suppresses the interference and collision of flexible risers and cables under dynamic operation in the process of deep-sea mining, thereby improving the stability, safety and continuity of system operation.

[0007] To achieve the above purpose, the present application provides a multi-pipeline cable support system suitable for deep-sea mining, which comprises a mooring assembly and a mid-water buoy arranged on the mooring assembly, the top of the mid-water buoy is provided with a mining riser, the mooring assembly comprises a mooring cable and a gravity anchor arranged at the bottom of the mooring cable, the mid-water buoy comprises a symmetrical orthogonal grid reinforced frame, the top of the orthogonal grid reinforced frame is provided with a pipeline cable support plate, and the space formed by the orthogonal grid reinforced frame and the pipeline cable support plate is symmetrically provided with a capsule-type buoy unit, the mooring cable is connected to the orthogonal grid reinforced frame, and the mining riser is arranged on the pipeline cable support plate.

[0008] Preferably, the four corners of the orthogonal grid reinforced frame are provided with lifting lugs, the mooring cable and the gravity anchor are both provided with four, the four mooring cables are fixedly connected to the four lifting lugs respectively, the gravity anchor comprises a plurality of cast iron plates and two groups of inclined prism shear keys symmetrically arranged at the bottom of the plurality of cast iron plates, and the number of each group of inclined prism shear keys is four.

[0009] Preferably, the mining riser comprises a rigid mining riser, a flexible mining riser connected with the rigid mining riser, the rigid mining riser and the flexible mining riser are connected through an intermediate cabin, the other end of the flexible mining riser is provided with a mining car, both sides of the rigid mining riser and the flexible mining riser are provided with cables, the cables are connected with the mining car, the rigid mining riser and the cables, and the flexible mining riser and the cables are fixedly connected through a plurality of double-arm links.

[0010] Preferably, the top of the pipe-cable support plate is provided with three channels, a limiting skirt plate is arranged between adjacent channels, the flexible mining riser is arranged between the two limiting skirt plates, the two cables are arranged on the sides of the two limiting skirt plates away from the flexible mining riser, the distance between the two cables is the same as the length of the double-arm link, the flexible mining riser and the cable are perpendicular to the double-arm link, and the outer side edge line of the orthogonal grid reinforcing framework is parallel to the double-arm link.

[0011] Preferably, the distance between adjacent double-arm links between the pipe-cable support plate and the intermediate cabin is Specifically set as: ; Among them, represents the length of the flexible mining riser between the pipe-cable support plate and the intermediate cabin, represents the curve length of the flexible mining riser between the pipe-cable support plate and the intermediate cabin with the pipe-cable support plate as the origin; The distance between adjacent double-arm links between the pipe-cable support plate and the mining car is Specifically set as: ; Among them, represents the length of the flexible mining riser between the pipe-cable support plate and the mining car, represents the curve length of the flexible mining riser between the pipe-cable support plate and the mining car with the pipe-cable support plate as the origin.

[0012] Preferably, the total length of the rigid mining riser and the flexible mining riser is , no double-arm link is arranged in the range of of the pipe-cable support plate, and no double-arm link is arranged in the range of of the mining car.

[0013] Preferably, the double-arm linkage includes two connecting arms and two collars. The connecting arm includes a connecting rod and a large-diameter semi-annular joint and a small-diameter semi-annular joint respectively disposed at both ends of the connecting rod. The collar is configured as a semi-annular structure that matches the small-diameter semi-annular joint. Bolt holes for connecting bolts and nuts are provided at both ends of the large-diameter semi-annular joint, the small-diameter semi-annular joint, and the semi-annular structure. The two large-diameter semi-annular joints and the small-diameter semi-annular joint and the semi-annular structure are fixedly connected by bolts and nuts.

[0014] Preferably, the rigid or flexible mining riser passes between two large-diameter semi-circular joints, and the cable passes between the small-diameter semi-circular joint and the semi-circular structure. The inner walls of the large-diameter semi-circular joint, the small-diameter semi-circular joint, and the semi-circular structure are all provided with semi-circular anti-slip pads.

[0015] Therefore, the present invention employs the above-mentioned multi-tube cable support system suitable for deep-sea mining, which has the following beneficial effects: (1) This scheme optimizes the configuration of the flexible mining riser by using a medium-water pontoon, which reduces the dynamic response of the riser. The large net buoyancy provided by the medium-water pontoon can improve the stability of the riser operation and improve the mineral transport efficiency to a certain extent. (2) This scheme adopts a structure that combines a medium-water float and a double-arm connecting rod, which can simultaneously support the riser and the cable, preventing interference or even collision between the riser and the cable; (3) By setting up symmetrically distributed mooring cables, this scheme significantly reduces the motion amplitude of the medium-water buoy, improves the stability of the medium-water buoy, and thus improves the safety of riser operation; (4) The double-arm connecting rod of this solution adopts a modular segmented structure. Through standardized interface design, it can achieve mass production while ensuring assembly accuracy, and provides an engineering technology solution for commercial application.

[0016] The method of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This is a structural diagram of a multi-tube cable support system suitable for deep-sea mining according to the present invention; Figure 2 This is a connection diagram of the mooring assembly and the mid-water buoy of the present invention; Figure 3 This is a structural diagram of the gravity anchor of the present invention; Figure 4 This is a structural diagram of the water pontoon in this invention; Figure 5 This is a connection diagram of the double-arm connecting rod and the mining riser of the present invention; Figure 6 This is a structural diagram of the double-arm connecting rod of the present invention; Figure 7 This is an exploded view of the double-arm connecting rod of the present invention.

[0018] The components include: 1. Mooring assembly; 101. Mooring cable; 102. Gravity anchor; 112. Multi-layer cast iron plate; 122. Oblique prism shear key; 2. Medium-water buoy; 201. Orthogonal grid reinforced frame; 202. Cable support plate; 203. Capsule-type buoy unit; 204. Limiting skirt; 205. Channel; 3. Mining riser; 301. Rigid mining riser; 302. Flexible mining riser; 303. Cable; 4. Intermediate compartment; 5. Mining car; 6. Double arm connecting rod; 601. Connecting arm; 611. Connecting rod; 621. Large-diameter semi-circular joint; 631. Small-diameter semi-circular joint; 602. Collar; 603. Semi-circular anti-slip pad; 604. Bolt hole; 7. Bolt; 8. Nut; 9. Lifting lug. Detailed Implementation

[0019] The method of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Unless otherwise defined, the methodological or scientific terms used in this invention shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0021] The terms "comprising" or "including" as used in this invention mean that the element preceding the term encompasses the element listed after the term, and do not exclude the possibility of encompassing other elements. Terms such as "inner," "outer," "upper," and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. In this invention, unless otherwise explicitly specified and limited, the term "attached" and similar terms should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two elements or the interaction relationship between two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] Example like Figures 1-7 As shown, the present invention provides a multi-tube cable support system suitable for deep-sea mining, including a mooring assembly 1 and a mid-water buoy 2 disposed on the mooring assembly 1. The mooring assembly 1 is used for positioning the mid-water buoy 2, and the mid-water buoy 2 is used for supporting the flexible mining riser 302 and the cable 303.

[0023] The top of the buoy 2 is equipped with a mining riser 3. The mooring assembly 1 includes a mooring cable 101 and a gravity anchor 102 set at the bottom of the mooring cable 101. The buoy 2 includes a symmetrically arranged orthogonal grid reinforcement frame 201. The orthogonal grid reinforcement frame 201 can provide sufficient strength to ensure the safe operation of the flexible mining riser 302.

[0024] A cable support plate 202 is installed on the top of the orthogonal grid reinforced frame 201. Capsule-shaped float units 203 are symmetrically arranged in the space formed by the orthogonal grid reinforced frame 201 and the cable support plate 202. The mooring cable 101 is connected to the orthogonal grid reinforced frame 201. The mining riser 3 is erected on the cable support plate 202.

[0025] The capsule-shaped pontoon unit 203 has a large drainage volume, which can provide sufficient net buoyancy to ensure the structural integrity of the flexible mining riser 302 within the operating range of the mining vehicle 5.

[0026] The orthogonal grid reinforced frame 201 is equipped with lifting lugs 9 at each of its four corners. There are four mooring cables 101 and four gravity anchors 102. The four mooring cables 101 are fixedly connected to the four lifting lugs 9 respectively. The mooring cables 101 have a large pretension, which can provide a large restoring force and suppress the movement of the middle-water buoy 2, further ensuring the operational safety of the flexible mining riser 302. The gravity anchor 102 includes a multi-layer cast iron plate 112 and two sets of oblique prism shear keys 122 symmetrically arranged at the bottom of the multi-layer cast iron plate 112. There are four oblique prism shear keys 122 in each set. The multi-layer cast iron plate 112 has sufficient weight to meet the anchoring requirements of the mooring system. The oblique prism shear keys 122 can prevent the gravity anchor from drifting.

[0027] The mining riser 3 includes a rigid mining riser 301 and a flexible mining riser 302 connected to the rigid mining riser 301. The rigid mining riser 301 and the flexible mining riser 302 are connected by an intermediate compartment 4. A mining car 5 is installed at the other end of the flexible mining riser 302. Cables 303 are installed on both sides of the rigid mining riser 301 and the flexible mining riser 302. The cables 303 are connected to the mining car 5 to supply power to the mining car 5. The rigid mining riser 301 and the cables 303, as well as the flexible mining riser 302 and the cables 303, are fixedly connected by multiple double-arm connecting rods 6. The double-arm connecting rods 6 can prevent interference or even collision between the flexible mining riser 302 and the cables 303.

[0028] The top of the cable support plate 202 is provided with three channels 205, and a limiting skirt 204 is provided between adjacent channels 205. The cable support plate 202 has a concave bearing surface with a continuous curvature transition and integrates three channels 205 for passing through the flexible mining riser 302 and two cables 303. The cable support plate 202 achieves a steep wave or gentle wave riser configuration by supporting the flexible mining riser 302, reducing riser tension and bending moment, and improving operational stability. The limiting skirt 204 can prevent interference or even collision between the flexible mining riser 302 and the cable 303.

[0029] The flexible mining riser 302 is set between two limiting skirts 204, and two cables 303 are respectively set on the side of the two limiting skirts 204 away from the flexible mining riser 302. The distance between the two cables 303 is the same as the length of the double-arm connecting rod 6. The flexible mining riser 302 and the cables 303 are both perpendicular to the double-arm connecting rod 6. The outer edge line of the orthogonal grid reinforcement frame 201 is parallel to the double-arm connecting rod 6.

[0030] The double-arm connecting rod 6 includes two connecting arms 601 and two collars 602. The connecting arm 601 includes a connecting rod 611 and a large-diameter semi-annular joint 621 and a small-diameter semi-annular joint 631 respectively disposed at both ends of the connecting rod 611. The collar 602 is configured as a semi-annular structure that matches the small-diameter semi-annular joint 631. Both ends of the large-diameter semi-annular joint 621, the small-diameter semi-annular joint 631 and the semi-annular structure are provided with bolt holes 604 for connecting bolts 7 and nuts 8. The two large-diameter semi-annular joints 621 are fixedly connected to each other and the small-diameter semi-annular joint 631 is fixedly connected to the semi-annular structure by bolts 7 and nuts 8.

[0031] The rigid mining riser 301 or the flexible mining riser 302 passes between two large-diameter semi-annular joints 621, and the cable 303 passes between the small-diameter semi-annular joint 631 and the semi-annular structure. The inner walls of the large-diameter semi-annular joint 621, the small-diameter semi-annular joint 631 and the semi-annular structure are all provided with semi-annular anti-slip pads 603 to ensure that there is no relative sliding between the double-arm connecting rod 6 and the rigid mining riser 301, the flexible mining riser 302 and the cable 303.

[0032] The connecting arm 601, collar 602, and semi-circular anti-slip pad 603 are all at the same height, which facilitates manufacturing and installation.

[0033] The distance between the cable support plate 202 and the intermediate compartment 4, and between adjacent double-arm connecting rods 6 Specifically set as follows: ; in, In this embodiment, the length of the flexible mining riser 302 between the cable support plate 202 and the intermediate compartment 4 is indicated. Take 240m, This indicates the curve length of the flexible mining riser 302 between the cable support plate 202 and the intermediate compartment 4, with the cable support plate 202 as the origin. That is, the distance between the cable support plate 202 and the intermediate compartment 4, and between adjacent double-arm connecting rods 6. Specifically set as follows: ; The distance between the cable support plate 202 and the mining car 5, and between adjacent double-arm connecting rods 6. Specifically set as follows: ; in, In this embodiment, the length of the flexible mining riser 302 between the cable support plate 202 and the mining vehicle 5 is indicated. Take 360m, This represents the curve length of the flexible mining riser 302 between the cable support plate 202 and the mining vehicle 5, with the cable support plate 202 as the origin. That is, the distance between the cable support plate 202 and the mining car 5, and between adjacent double-arm connecting rods 6. Specifically set as follows: .

[0034] The total length of the rigid mining riser 301 and the flexible mining riser 302 is Cable support plate 202 The double-arm linkage 6 is not installed within the range, and the mining vehicle 5 is... In this embodiment, no double-arm connecting rod 6 is installed within the range. Take 600m, that is, within 30m of the cable support plate 202, no double-arm connecting rod 6 is installed, within 20m of the mining car 5, the length of the rigid mining riser 301 is 200m, and a double-arm connecting rod 6 is installed on the rigid mining riser 301 every 40m.

[0035] Therefore, the present invention adopts the above-mentioned multi-tube cable support system suitable for deep-sea mining, which adopts a cooperative structure of mid-water buoys and double-arm connecting rods, symmetrically distributed mooring components, and a double-arm connecting rod layout with adjustable segment spacing. This effectively reduces the dynamic response of the deep-sea mining riser, suppresses interference and collision between the riser and the cable, and significantly improves the overall operational stability and safety of the system.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the method of the present invention and not to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the method of the present invention, and these modifications or equivalent substitutions should not cause the modified method to deviate from the spirit and scope of the method of the present invention.

Claims

1. A multi-tubular cable support system suitable for deep sea mining, characterised in that, The mooring assembly comprises a mooring cable and a gravity anchor arranged at the bottom of the mooring cable, and the intermediate water buoy comprises a symmetrical orthogonal grid reinforcing frame, a pipe cable support plate arranged at the top of the orthogonal grid reinforcing frame, and capsule type buoy units symmetrically arranged in the space formed by the orthogonal grid reinforcing frame and the pipe cable support plate.

2. A multi-tubular cable support system suitable for deep sea mining according to claim 1, wherein, The four corners of the orthogonal grid reinforcing frame are provided with lifting lugs, the mooring cable and the gravity anchor are both provided with four, the four mooring cables are fixedly connected with the four lifting lugs respectively, and the gravity anchor comprises a plurality of cast iron plates and two groups of inclined prism type shear keys symmetrically arranged at the bottom of the cast iron plates.

3. A multi-tubular cable support system suitable for deep sea mining according to claim 1, wherein, The mining vertical pipe comprises a rigid mining vertical pipe and a flexible mining vertical pipe connected with the rigid mining vertical pipe, the rigid mining vertical pipe and the flexible mining vertical pipe are connected through an intermediate cabin, the other end of the flexible mining vertical pipe is provided with a mining car, the two sides of the rigid mining vertical pipe and the flexible mining vertical pipe are provided with cables, the cables are connected with the mining car, and the rigid mining vertical pipe and the cables and the flexible mining vertical pipe and the cables are fixedly connected through a plurality of double-arm links.

4. A multi-tubular cable support system suitable for deep sea mining according to claim 3, wherein, The top of the pipe cable support plate is provided with three channels, limiting skirt plates are arranged between adjacent channels, the flexible mining vertical pipe is arranged between two limiting skirt plates, two cables are arranged on the sides of the two limiting skirt plates away from the flexible mining vertical pipe, the distance between the two cables is the same as the length of the double-arm link, the flexible mining vertical pipe and the cables are perpendicular to the double-arm link, and the outer edge line of the orthogonal grid reinforcing frame is parallel to the double-arm link.

5. A multi-tubular cable support system suitable for deep sea mining according to claim 4, wherein, The distance between adjacent double-arm links between the umbilical support plate and the intermediate cabin Specifically configured as: ； wherein, Lflex represents the length of the flexible mining riser between the umbilical support plate and the intermediate tank, Lflex represents the length of the flexible mining riser between the umbilical support plate and the intermediate tank, The distance between adjacent double-arm links between the umbilical support plate and the mining vehicle Specifically configured as: ； wherein, Lflex represents the length of the flexible mining riser between the umbilical support plate and the mining vehicle, Lflex represents the length of the flexible mining riser between the umbilical support plate and the mining vehicle, 6. A multi-tubular cable support system suitable for deep sea mining according to claim 5, wherein, The total length of the rigid mining riser and the flexible mining riser is The double-arm link is not arranged in the range of The double-arm link is not arranged in the range of The double-arm link is not arranged in the range of 7. A multi-tubular cable support system suitable for deep sea mining according to claim 3, wherein, The double-arm link comprises two connecting arms and two sleeves, the connecting arm comprises a link and large-diameter and small-diameter semi-ring joints arranged at two ends of the link respectively, the sleeve is in the form of a semi-ring structure matched with the small-diameter semi-ring joint, and bolt holes of the connecting bolts and nuts are arranged at two ends of the large-diameter semi-ring joint, the small-diameter semi-ring joint and the semi-ring structure.

8. A multi-tubular cable support system suitable for deep sea mining according to claim 7, wherein, The rigid mining vertical pipe or the flexible mining vertical pipe passes through between the two large-diameter semi-ring joints, the cable passes through between the small-diameter semi-ring joint and the semi-ring structure, and the inner walls of the large-diameter semi-ring joint, the small-diameter semi-ring joint and the semi-ring structure are provided with semi-ring anti-skid pads.

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