Resistance reduction structure and submarine cable system

Abstract

The utility model relates to a drag reduction structure and a submarine cable system, the drag reduction structure comprises a main body unit, a plurality of first moving units, a sealing unit, a second moving unit, at least one fixing unit, a guiding unit, a control unit and a stabilizing unit, and the main body unit passes through a submarine cable; the plurality of first moving units are respectively arranged outside the main body unit, are in contact with the embedded pipe and are used for driving the submarine cable to move through the main body unit; the sealing unit is detachably arranged in the main body unit; the second moving unit is movably arranged at the top end of the sealing unit and makes contact with the embedded pipe. The submarine cable drag reduction structure has the advantages that the first moving units and the second moving units are arranged on the outer side of the main body unit in a surrounding mode and used in cooperation, so that the drag reduction structure can serve as a moving point in all directions to drag a submarine cable when entering a pipeline to move, the traction effect is improved, and uneven stress in the traction direction is avoided; and the steel wire rope is fractured due to overlarge stress.

Description

Technical Field

[0001] The utility model relates to the technical field related to submarine cable laying, and in particular to a drag reduction structure and a submarine cable system. Background Art

[0002] Submarine cables are cables wrapped in insulating materials, laid on the seabed, and used for telecommunication transmission. Submarine cables are divided into submarine communication cables and submarine power cables. Submarine communication cables are mainly used for communication services, which are expensive but highly confidential. Submarine power cables are mainly used to transmit high-power electrical energy underwater, and have the same function as underground power cables, except that they are used in different occasions and laid in different ways. Since submarine cable projects are recognized by countries around the world as complex and difficult large-scale projects, complex technologies are used in environmental detection, marine physical surveys, and cable design, manufacturing, and installation. Therefore, there are only a few submarine cable manufacturers in the world, mainly in Norway, Denmark, Japan, Canada, the United States, Britain, France, Italy, etc. These countries provide laying technology in addition to manufacturing.

[0003] During the existing submarine cable laying process, a traction steel wire rope is reserved in the pipe and a guide pulley is set at the pipe mouth. During construction, the traction steel wire is first connected and fixed to the submarine cable head, and pulleys are tied to the submarine cable at a certain interval to guide and reduce resistance in the pipe. The traction equipment is started to pull the submarine cable through the pipe.

[0004] At present, the pulley is fixed at a single point and subjected to force at a single point. During the pulling process of the submarine cable, the submarine cable will deflect due to uneven force in the pulling direction. The previously pre-installed pulley cannot play the role of guidance and drag reduction after deflection;

[0005] When the straight section in the pipeline is pulled, the resistance of the submarine cable is mainly caused by the friction between the submarine cable's own gravity and the pipeline. The larger the contact area, the greater the friction resistance. For non-straight pipelines, especially in the turning section, in addition to its own gravity, the submarine cable will also produce interaction force with the pipeline, resulting in a significant increase in friction resistance, which may cause the wire rope to break due to excessive force. Once broken, it is necessary to manually enter the pipeline to reconnect the pulling rope.

[0006] At present, no effective solution has been proposed for the problem in the related technology that uneven force in the pulling direction of the device causes pulley deflection and wire rope breakage due to excessive force. Utility Model Content

[0007] The purpose of the utility model is to provide a drag reduction structure and a submarine cable system to address the deficiencies in the prior art, so as to solve the problems in the related art of uneven force in the pulling direction leading to pulley deflection and wire rope breakage due to excessive force.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0009] In a first aspect, a drag reduction structure is provided for submarine cable traction, comprising:

[0010] A main unit, wherein the main unit is arranged through the submarine cable;

[0011] A plurality of first moving units, which are distributed outside the main unit and in contact with the pre-buried pipe, and are used to reduce movement resistance when the main unit drives the submarine cable to move inside the pre-buried pipe;

[0012] A closing unit, wherein the closing unit is detachably arranged inside the main body unit;

[0013] a second moving unit, which is movably arranged outside the closed unit and in contact with the pre-buried pipe, and is used to reduce movement resistance when the main unit drives the submarine cable to move inside the pre-buried pipe;

[0014] at least one fixing unit, the fixing unit being detachably connected to the main unit and the closing unit, respectively, and being used to fix the closing unit to the main unit;

[0015] A guide unit, the guide unit is arranged at the bottom end of the closed unit and connected to the closed unit;

[0016] A control unit, the control unit is movably connected to the guide unit and is used to rotate along the circumference of the guide unit and reciprocate along the axial direction of the guide unit;

[0017] The stabilizing unit is movably arranged inside the main unit and is rotatably connected to the control unit, and is used for reciprocating along the axial direction of the guide unit under the action of the control unit to fix the submarine cable between the main unit and the stabilizing unit.

[0018] In some embodiments, the main unit includes:

[0019] A main body element, wherein the main body element is arranged through the submarine cable;

[0020] A plurality of first installation elements, which are distributed outside the main body element and are movably connected to corresponding first moving units respectively;

[0021] A cavity element, wherein the cavity element is arranged through the main body element, the guide unit, the control unit and the stabilizing unit are arranged in sequence inside the cavity element and are in contact with the submarine cable;

[0022] At least one first sliding element, which is disposed inside the cavity element and is slidably connected to the stabilizing unit;

[0023] at least one first docking element, which is disposed on the main body element, communicates with the first sliding element, and is detachably connected to the closing unit;

[0024] At least one first connecting element, wherein the first connecting element is disposed inside the first docking element and is detachably connected to the fixing unit.

[0025] In some embodiments, the first mobile unit includes:

[0026] The first moving element is movably arranged outside the main unit and in contact with the pre-buried pipe, and is used to reduce movement resistance when the main unit drives the submarine cable to move inside the pre-buried pipe.

[0027] In some of the embodiments, the enclosed unit comprises:

[0028] A closing element, the closing element being detachably disposed inside the main unit;

[0029] a second mounting element, the second mounting element being disposed outside the closing element and movably connected to the second moving unit;

[0030] at least one second docking element, which is disposed at an end of the closure element and is detachably connected to the main unit;

[0031] At least one second connecting element, wherein the second connecting element is disposed through the second docking element and is detachably connected to the fixing unit.

[0032] In some embodiments, the second mobile unit includes:

[0033] The second moving element is movably arranged outside the closed unit and in contact with the embedded pipe, and is used to reduce the movement resistance when the main unit drives the submarine cable to move inside the embedded pipe.

[0034] In some embodiments, the fixing unit includes:

[0035] A fixing element is detachably connected to the main unit and the closing unit, respectively, and is used to fix the closing unit to the main unit.

[0036] In some of the embodiments, the guiding unit comprises:

[0037] A guide element is arranged at the bottom end of the closed unit and is rotatably connected to the control unit.

[0038] In some of the embodiments, the control unit includes:

[0039] The control element is rotatably connected to the guide unit and the stabilizing unit respectively, and is used to rotate along the circumference of the guide unit to drive the stabilizing unit to reciprocate along the axial direction of the guide unit.

[0040] In some embodiments, the stabilizing unit includes:

[0041] A stabilizing element, which is movably disposed inside the main unit and is used to reciprocate along the axial direction of the guide unit under the action of the control unit to fix the submarine cable between the main unit and the stabilizing unit;

[0042] at least one second sliding element, which is disposed at an end of the stabilizing element and is slidably connected to the main unit;

[0043] A rotating element is disposed at the top of the stabilizing element and is rotatably connected to the control unit.

[0044] In a second aspect, a submarine cable system is provided, comprising:

[0045] The drag reduction structure as described in the first aspect;

[0046] A submarine cable structure, wherein the submarine cable structure is in contact with the main unit and the stabilizing unit of the drag reduction structure respectively.

[0047] In some of the embodiments, the submarine cable system further comprises:

[0048] A pre-buried pipe structure is in contact with the first moving unit and the second moving unit of the drag reducing structure respectively.

[0049] The utility model adopts the above technical solution, and compared with the prior art, has the following technical effects:

[0050] The utility model discloses a drag reduction structure and a submarine cable system. A plurality of first moving units and a second moving unit are arranged around the outer side of a main unit for coordinated use. When the drag reduction structure moves into a pipeline, the submarine cable can be pulled in all directions as moving points, thereby improving the pulling effect and avoiding the problems of uneven force in the pulling direction and breakage of the wire rope due to excessive force. The submarine cable can be fixed to the drag reduction structure by coordinated use of a closing unit, a guiding unit, a control unit and a stabilizing unit, so as to ensure the stability of the submarine cable pulling and improve practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1is a schematic diagram of the three-dimensional structure of the drag reduction structure according to an embodiment of the utility model;

[0052] Figure 2 is an exploded view of a drag reduction structure according to an embodiment of the utility model;

[0053] Figure 3 It is a three-dimensional structural schematic diagram of a main unit according to an embodiment of the utility model;

[0054] Figure 4 is a schematic diagram of the three-dimensional structure of the first mobile unit according to an embodiment of the utility model;

[0055] Figure 5 is a schematic diagram of the three-dimensional structure of a closed unit according to an embodiment of the utility model;

[0056] Figure 6 is a schematic diagram of a second mobile unit according to an embodiment of the utility model;

[0057] Figure 7 is a schematic diagram of the three-dimensional structure of a fixing unit according to an embodiment of the utility model;

[0058] Figure 8 is a schematic diagram of the three-dimensional structure of a guide unit according to an embodiment of the utility model;

[0059] Fig. 9 is a schematic diagram of the three-dimensional structure of a control unit according to an embodiment of the utility model;

[0060] Fig.10 is a schematic diagram of the three-dimensional structure of a stabilizing unit according to an embodiment of the utility model;

[0061] Fig.11 is a structural schematic diagram of a submarine cable system according to an embodiment of the utility model;

[0062] The reference numerals are: 100, drag reduction structure;

[0063] 110, main unit; 111, main body element; 112, first mounting element; 113, cavity element; 114, first sliding element; 115, first docking element; 116, first connecting element;

[0064] 120. A first moving unit; 121. A first moving element;

[0065] 130, closing unit; 131, closing element; 132, second mounting element; 133, second docking element; 134, second connecting element;

[0066] 140. A second moving unit; 141. A second moving element;

[0067] 150. fixing unit; 151. fixing element;

[0068] 160. guide unit; 161. guide element;

[0069] 170. control unit; 171. control element;

[0070] 180, stabilizing unit; 181, stabilizing element; 182, second sliding element; 183, rotating element;

[0071] 200. Submarine cable structure;

[0072] 300. Preburied pipe structure. DETAILED DESCRIPTION

[0073] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0074] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0075] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0076] Example 1

[0077] This embodiment relates to the drag reduction structure of the utility model.

[0078] like Figure 1 , Figure 2As shown, a drag reduction structure 100 is used for submarine cable traction, comprising a main unit 110, a plurality of first moving units 120, a closing unit 130, a second moving unit 140, at least one fixed unit 150, a guiding unit 160, a control unit 170 and a stabilizing unit 180. The main unit 110 is arranged through the submarine cable; the plurality of first moving units 120 are distributed and arranged outside the main unit 110 and contact with the pre-buried pipe, and are used to reduce the movement resistance when the main unit 110 drives the submarine cable to move inside the pre-buried pipe; the closing unit 130 is detachably arranged inside the main unit 110; the second moving unit 140 is movably arranged outside the closing unit 130 and contact with the pre-buried pipe, and is used to reduce the movement resistance when the main unit 110 drives the submarine cable to move inside the pre-buried pipe; the fixing unit 150 is respectively in contact with the main unit 110 and the closing unit 130; The closing unit 130 is detachably connected to the main unit 110, and is used to fix the closing unit 130 to the main unit 110; the guide unit 160 is arranged at the bottom end of the closing unit 130 and is connected to the closing unit 130; the control unit 170 is movably connected to the guide unit 160, and is used to rotate along the circumference of the guide unit 160 and reciprocate along the axial direction of the guide unit 160; the stabilizing unit 180 is movably arranged inside the main unit 110, and is rotatably connected to the control unit 170, and is used to reciprocate along the axial direction of the guide unit 160 under the action of the control unit 170 to fix the submarine cable between the main unit 110 and the stabilizing unit 180.

[0079] like Figure 3 As shown, the main unit 110 includes a main body element 111, a plurality of first installation elements 112, a cavity element 113, at least one first sliding element 114, at least one first docking element 115 and at least one first connecting element 116. The main body element 111 is arranged through the submarine cable; the plurality of first installation elements 112 are distributed and arranged outside the main body element 111, and are respectively movably connected with the corresponding first moving units 120; the cavity element 113 is arranged through the main body element 111, and the interior of the cavity element 113 is sequentially provided with a guide unit 160, a control unit 170 and a stabilizing unit 180, and is in contact with the submarine cable; the first sliding element 114 is arranged inside the cavity element 113, and is slidably connected with the stabilizing unit 180; the first docking element 115 is arranged on the main body element 111, and is in communication with the first sliding element 114, and is detachably connected with the closing unit 130; the first connecting element 116 is arranged inside the first docking element 115, and is detachably connected with the fixing unit 150.

[0080] The cross section of the main body element 111 is circular.

[0081] In some of the embodiments, the main body element 111 is made of stainless steel.

[0082] In some of the embodiments, the main body component 111 is a main body plate.

[0083] The first mounting element 112 is spherical, such as a 1 / 2 spherical shape, a 2 / 3 spherical shape, etc.

[0084] The size of the first installation element 112 matches the size of the main body element 111. Generally, the radial size of the first installation element 112 is smaller than the radial size and axial size of the main body element 111.

[0085] A plurality of first installation elements 112 are distributed along the circumference of the main body element 111 .

[0086] In some embodiments, the number of first mounting elements 112 is five.

[0087] In some embodiments, the first mounting element 112 is a first mounting slot.

[0088] The cross section of the cavity element 113 is U-shaped. Specifically, the cavity element 113 includes an arcuate groove and a rectangular groove. The arcuate groove is set through the center of the main body element 111; the rectangular groove is set through the main body element 111, and the first sliding element 114 is set inside the rectangular groove and communicated with the arcuate groove.

[0089] The size of the arcuate groove matches the size of the main body element 111. Generally, the radial size of the arcuate groove is smaller than the radial size of the main body element 111, and the axial size of the arcuate groove is equal to the axial size of the main body element 111.

[0090] The size of the rectangular groove matches the size of the main body element 111. Generally, the length and height of the rectangular groove are smaller than the radial size of the main body element 111, and the width of the arc groove is equal to the axial size of the main body element 111.

[0091] The size of the rectangular groove matches the size of the arc groove. Generally, the length of the rectangular groove is equal to the radial dimension of the arc groove, and the width of the arc groove is equal to the axial dimension of the arc groove.

[0092] The first sliding element 114 has a rectangular cross section.

[0093] The size of the first sliding element 114 matches the size of the rectangular slot. Generally, the length of the first sliding element 114 is smaller than the width of the rectangular slot, the width of the first sliding element 114 is smaller than the length of the rectangular slot, and the height of the first sliding element 114 is not greater than the height of the rectangular slot.

[0094] In some embodiments, there are a plurality of first sliding elements 114. The plurality of first sliding elements 114 are symmetrically disposed on both sides of the rectangular groove, that is, at least one first sliding element 114 is disposed on each side of the rectangular groove.

[0095] When a plurality of first sliding elements 114 are disposed on each side of the rectangular groove, the plurality of first sliding elements 114 are disposed at intervals along the width direction of the rectangular groove.

[0096] In some of the embodiments, a first sliding element 114 is disposed on one side of the rectangular slot, and a first sliding element 114 is disposed on the other side of the rectangular slot.

[0097] In some embodiments, the first sliding element 114 is a sliding slot.

[0098] The cross section of the first docking element 115 is rectangular.

[0099] The size of the first docking element 115 matches the size of the main body element 111. Generally, the length of the first docking element 115 is smaller than the axial size of the main body element 111, and the width and height of the first docking element 115 are smaller than the radial size of the main body element 111.

[0100] The size of the first docking element 115 matches the size of the first sliding element 114. Generally, the length of the first docking element 115 is equal to the length of the first sliding element 114, the width of the first docking element 115 is greater than the width of the first sliding element 114, and the height of the first docking element 115 is less than the height of the first sliding element 114.

[0101] In some embodiments, there are a plurality of first docking elements 115. The plurality of first docking elements 115 are symmetrically disposed on both sides of the rectangular groove, that is, at least one first docking element 115 is disposed on each side of the rectangular groove.

[0102] In the case where a plurality of first abutting elements 115 are disposed on each side of the rectangular groove, the plurality of first abutting elements 115 are disposed at intervals along the width direction of the rectangular groove.

[0103] In some of the embodiments, a first docking element 115 is disposed on one side of the rectangular groove, and a first docking element 115 is disposed on the other side of the rectangular groove.

[0104] In some embodiments, the first docking element 115 is a docking groove.

[0105] The cross section of the first connecting element 116 is circular.

[0106] The size of the first connecting element 116 matches the size of the first docking element 115. Generally, the diameter of the first connecting element 116 is smaller than the length and width of the first docking element 115.

[0107] The size of the first connecting element 116 matches the size of the main body element 111. Generally, the axial size of the first connecting element 116 is smaller than the radial size of the main body element 111.

[0108] The number of the first connection elements 116 matches the number of the first docking elements 115. Generally, the number of the first connection elements 116 is an integer multiple of the number of the first docking elements 115. That is, each first docking element 115 is provided with at least one first connection element 116.

[0109] In the case that a plurality of first connecting elements 116 are disposed on each first docking element 115 , the plurality of first connecting elements 116 are disposed at intervals along the length direction and / or the width direction of the first docking element 115 .

[0110] In some embodiments, the first connecting element 116 is a threaded hole.

[0111] like Figure 4 As shown, the first moving unit 120 includes a first moving element 121. The first moving element 121 is movably arranged outside the main unit 110 and contacts the pre-buried pipe, and is used to reduce movement resistance when the main unit 110 drives the submarine cable to move inside the pre-buried pipe.

[0112] Specifically, the first moving element 121 is connected to the first installation element 112 .

[0113] The number of the first moving units 120 matches the number of the first installation elements 112. Generally, the number of the first moving units 120 is equal to the number of the first installation elements 112.

[0114] The first moving element 121 is spherical.

[0115] The size of the first moving element 121 matches the size of the first mounting element 112. Generally, the radial size of the first moving element 121 is equal to the radial size of the first mounting element 112.

[0116] In some of the embodiments, the first moving element 121 is rotationally connected to the first mounting element 112 in an inseparable manner.

[0117] In some embodiments, the first moving element 121 is made of stainless steel.

[0118] In some of the embodiments, the first moving element 121 is a first universal ball.

[0119] like Figure 5As shown, the enclosed unit 130 includes an enclosed element 131, a second mounting element 132, at least one second docking element 133 and at least one second connecting element 134. The enclosed element 131 is detachably arranged inside the main unit 110; the second mounting element 132 is arranged outside the enclosed element 131 and is movably connected to the second movable unit 140; the second docking element 133 is arranged at the end of the enclosed element 131 and is detachably connected to the main unit 110; the second connecting element 134 is arranged through the second docking element 133 and is detachably connected to the fixing unit 150.

[0120] Specifically, the closing element 131 is detachably disposed inside the cavity element 113 ; the second docking element 133 is detachably connected to the first docking element 115 ; and the second connecting element 134 corresponds to the first connecting element 116 .

[0121] Specifically, the closing element 131 is detachably disposed inside the rectangular groove.

[0122] The closing element 131 is a structure with an arc-shaped top and a rectangular bottom. The arc-shaped top of the closing element 131 is used to adapt to the main element 111, so that after the closing element 131 and the main element 111 are connected, a circular structure is formed.

[0123] The size of the closing element 131 matches the size of the rectangular slot. Generally, the length of the closing element 131 is equal to the length of the rectangular slot, the width of the closing element 131 is equal to the width of the rectangular slot, and the height of the closing element 131 is less than the size and height of the rectangular slot.

[0124] In some of the embodiments, the sealing element 131 is made of stainless steel.

[0125] In some of the embodiments, the closing element 131 is a closing block.

[0126] The second mounting element 132 is spherical, such as a 1 / 2 spherical shape, a 2 / 3 spherical shape, etc.

[0127] The size of the second mounting element 132 matches the size of the closing element 131. Generally, the radial size of the second mounting element 132 is smaller than the length, width, and height of the closing element 131.

[0128] The size of the second mounting element 132 matches the size of the first mounting element 112. Generally, the radial dimension of the second mounting element 132 is equal to the radial dimension of the first mounting element 112.

[0129] In some of the embodiments, the second mounting element 132 is a second mounting slot.

[0130] The cross section of the second docking element 133 is rectangular.

[0131] The size of the second docking element 133 matches the size of the closing element 131. Generally, the length of the second docking element 133 is smaller than the width of the closing element 131, the width of the second docking element 133 is smaller than the length of the closing element 131, and the height of the second docking element 133 is smaller than the height of the closing element 131.

[0132] The size of the second docking element 133 matches the size of the first docking element 115. Generally, the length of the second docking element 133 is equal to the length of the first docking element 115, the width of the second docking element 133 is equal to the width of the first docking element 115, and the height of the second docking element 133 is equal to the height of the first docking element 115.

[0133] The number of the second docking elements 133 matches the number of the first docking elements 115. Generally, the number of the second docking elements 133 is equal to the number of the first docking elements 115.

[0134] In some embodiments, there are a plurality of second docking elements 133 , and the plurality of second docking elements 133 are symmetrically disposed on both sides of the closing element 131 , that is, at least one second docking element 133 is disposed on each side of the closing element 131 .

[0135] In the case that a plurality of second abutment elements 133 are disposed on each side of the closing element 131 , the plurality of second abutment elements 133 are disposed at intervals along the width direction of the closing element 131 .

[0136] In some embodiments, the second docking element 133 is fixedly connected to the closing element 131 , including but not limited to welding.

[0137] In some embodiments, the second docking element 133 is made of stainless steel.

[0138] In some embodiments, the second docking element 133 is a docking block.

[0139] The cross section of the second connecting element 134 is convex. Specifically, the second connecting element 134 includes a first through hole and a second through hole. The first through hole is arranged at the top of the second docking element 133 and is detachably connected to the fixing unit 150; the second through hole is arranged at the bottom of the second docking element 133 and is connected to the first through hole and is detachably connected to the fixing unit 150.

[0140] The size of the first through hole matches the size of the second docking element 133. Generally, the diameter of the first through hole is smaller than the length and width of the second docking element 133, and the axial size of the first through hole is equal to the height of the second docking element 133.

[0141] The size of the first through hole matches the size of the first connecting element 116. Generally, the diameter of the first through hole is larger than the diameter of the first connecting element 116.

[0142] The size of the second through hole matches the size of the second docking element 133. Generally, the diameter of the second through hole is smaller than the length and width of the second docking element 133, and the axial size of the second through hole is equal to the height of the second docking element 133.

[0143] The size of the second through hole matches the size of the first connecting element 116. Generally, the diameter of the second through hole is equal to the diameter of the first connecting element 116.

[0144] The size of the second through hole matches the size of the first through hole. Generally, the diameter of the second through hole is smaller than the diameter of the first through hole. The axial dimension of the second through hole is smaller than the axial dimension of the first through hole.

[0145] The number of the second connection elements 134 matches the number of the second docking elements 133. Generally, the number of the second connection elements 134 is equal to the number of the second docking elements 133. That is, each second docking element 133 corresponds to a second connection element 134.

[0146] The number of the second connecting elements 134 matches the number of the second docking elements 133. Generally, the number of the second connecting elements 134 is an integer multiple of the number of the second docking elements 133. That is, each second docking element 133 is provided with at least one second connecting element 134.

[0147] In the case that a plurality of second connecting elements 134 are disposed on each second docking element 133 , the plurality of second connecting elements 134 are disposed at intervals along the length direction and / or the width direction of the second docking element 133 .

[0148] like Figure 6 As shown, the second moving unit 140 includes a second moving element 141. The second moving element 141 is movably arranged outside the closed unit 130 and in contact with the pre-buried pipe, and is used to reduce movement resistance when the main unit 110 drives the submarine cable to move inside the pre-buried pipe.

[0149] Specifically, the second moving element 141 is connected to the second mounting element 132 .

[0150] The second moving element 141 is spherical.

[0151] The size of the second moving element 141 matches the size of the second mounting element 132. Generally, the radial size of the second moving element 141 is equal to the radial size of the second mounting element 132.

[0152] The size of the second moving element 141 matches the size of the first moving element 121. Generally, the radial size of the second moving element 141 is equal to the radial size of the first moving element 121.

[0153] In some of the embodiments, the second moving element 141 is rotationally connected to the second mounting element 132 in an inseparable manner.

[0154] In some embodiments, the second moving element 141 is made of stainless steel.

[0155] In some of the embodiments, the second moving element 141 is a second universal ball.

[0156] like Figure 7 As shown, the fixing unit 150 includes a fixing element 151. The fixing element 151 is detachably connected to the main unit 110 and the closing unit 130, respectively, and is used to fix the closing unit 130 to the main unit 110.

[0157] Specifically, the fixing element 151 is detachably connected to the first connecting element 116 and the second connecting element 134 .

[0158] More specifically, the fixing element 151 is detachably connected to the first through hole and the second through hole respectively.

[0159] In some embodiments, the fixing element 151 includes a screw and a nut, wherein the screw is detachably connected to the first connecting element 116 and the second connecting element 134 respectively; the screw is disposed at the top of the screw and connected to the screw to drive the screw to rotate.

[0160] The size of the screw rod matches the size of the first connecting element 116. Generally, the diameter of the screw rod is equal to the diameter of the first connecting element 116, and the axial dimension of the screw rod is greater than the axial dimension of the first connecting element 116.

[0161] The size of the screw rod matches the size of the second through hole. Generally, the diameter of the screw rod is equal to the diameter of the second through hole, and the axial dimension of the screw rod is greater than the axial dimension of the second through hole.

[0162] The size of the nut matches the size of the screw. Generally, the radial size of the nut is larger than the diameter of the screw, and the axial size of the nut is smaller than the axial size of the screw.

[0163] The size of the nut matches the size of the first through hole. Generally, the radial size of the nut is not larger than the radial size of the first through hole, and the axial size of the nut is smaller than the axial size of the first through hole.

[0164] In some of the embodiments, the fixing element 151 is made of stainless steel.

[0165] like Figure 8 As shown, the guide unit 160 includes a guide element 161. The guide element 161 is disposed at the bottom end of the closing unit 130 and is rotatably connected to the control unit 170.

[0166] Specifically, the guide element 161 is disposed at the bottom end of the closing element 131 and is connected to the closing element 131 .

[0167] The guide element 161 has a circular cross section.

[0168] The dimensions of the guide element 161 match the dimensions of the closing element 131. Generally, the diameter of the guide element 161 is smaller than the width of the closing element 131.

[0169] The size of the guide element 161 matches the size of the rectangular slot. Generally, the diameter of the guide element 161 is smaller than the length and width of the rectangular slot, and the axial dimension of the guide element 161 is smaller than the height of the rectangular slot.

[0170] In some of the embodiments, the guide element 161 is fixedly connected to the closing element 131 , including but not limited to welding.

[0171] In some of the embodiments, the guide element 161 is made of stainless steel.

[0172] In some of the embodiments, the guide element 161 is a threaded rod.

[0173] like Fig. 9 As shown, the control unit 170 includes a control element 171. The control element 171 is rotatably connected to the guide unit 160 and the stabilizing unit 180 respectively, and is used to rotate along the circumference of the guide unit 160 to drive the stabilizing unit 180 to reciprocate along the axial direction of the guide unit 160.

[0174] Specifically, the operating element 171 is rotatably connected to the guide element 161 .

[0175] The control element 171 is a hollow structure.

[0176] The size of the manipulation element 171 matches the size of the guide element 161. Generally, the inner diameter of the manipulation element 171 is equal to the diameter of the guide element 161, and the axial dimension of the manipulation element 171 is not less than the axial dimension of the guide element 161.

[0177] The size of the control element 171 matches the size of the rectangular slot. Generally, the outer diameter of the control element 171 is smaller than the length and width of the rectangular slot, and the axial dimension of the control element 171 is smaller than the height of the rectangular slot.

[0178] In some of the embodiments, the control element 171 is made of stainless steel.

[0179] In some of the embodiments, the control element 171 is a threaded sleeve.

[0180] like Fig.10 As shown, the stabilizing unit 180 includes a stabilizing element 181, at least one second sliding element 182 and a rotating element 183. The stabilizing element 181 is movably disposed inside the main unit 110, and is used to reciprocate along the axial direction of the guide unit 160 under the action of the control unit 170 to fix the submarine cable between the main unit 110 and the stabilizing unit 180; the second sliding element 182 is disposed at the end of the stabilizing element 181 and is slidably connected to the main unit 110; the rotating element 183 is disposed at the top of the stabilizing element 181 and is rotatably connected to the control unit 170.

[0181] Specifically, the stabilizing element 181 is movably disposed inside the cavity element 113 ; the second sliding element 182 is slidably connected to the first sliding element 114 ; and the rotating element 183 is swivel-connected to the operating element 171 .

[0182] More specifically, the stabilizing element 181 is movably disposed inside the rectangular groove and the arc groove.

[0183] The stabilizing element 181 is a structure with a rectangular top and an arc-shaped bottom. The arc-shaped bottom of the stabilizing element 181 is used to adapt to the submarine cable.

[0184] The size of the stabilizing element 181 matches the size of the cavity element 113. Specifically, the size of the stabilizing element 181 matches the size of the rectangular groove. Generally, the length of the stabilizing element 181 is less than the length of the rectangular groove, the width of the stabilizing element 181 is equal to the width of the rectangular groove, and the height of the stabilizing element 181 is less than the height of the rectangular groove.

[0185] The size of the stabilizing element 181 matches the size of the cavity element 113. Specifically, the size of the stabilizing element 181 matches the size of the arc-shaped groove. Generally, the length of the stabilizing element 181 is smaller than the radial size of the arc-shaped groove, the width of the stabilizing element 181 is equal to the axial size of the arc-shaped groove, and the height of the stabilizing element 181 is smaller than the radial size of the arc-shaped groove.

[0186] In some of the embodiments, the stabilizing element 181 is made of stainless steel.

[0187] In some embodiments, the stabilizing element 181 is a stabilizing splint.

[0188] The second sliding element 182 has a rectangular cross section.

[0189] The size of the second sliding element 182 matches the size of the stabilizing element 181. Specifically, the length of the second sliding element 182 is smaller than the width of the stabilizing element 181, the width of the second sliding element 182 is smaller than the length of the stabilizing element 181, and the height of the second sliding element 182 is smaller than the height of the stabilizing element 181.

[0190] The size of the second sliding element 182 matches the size of the first sliding element 114. Specifically, the length of the second sliding element 182 is equal to the length of the first sliding element 114, the width of the second sliding element 182 is greater than the width of the first sliding element 114, and the height of the second sliding element 182 is less than the height of the first sliding element 114.

[0191] The number of the second sliding elements 182 matches the number of the first sliding elements 114. Specifically, the number of the second sliding elements 182 is equal to the number of the first sliding elements 114.

[0192] In some embodiments, there are a plurality of second sliding elements 182 , and the plurality of second sliding elements 182 are symmetrically disposed on both sides of the stabilizing element 181 , that is, at least one second sliding element 182 is disposed on each side of the stabilizing element 181 .

[0193] In the case that a plurality of second sliding elements 182 are disposed on each side of the stabilizing element 181 , the plurality of second sliding elements 182 are disposed at intervals along the width direction of the stabilizing element 181 .

[0194] In some of the embodiments, a second sliding element 182 is disposed on one side of the stabilizing element 181 , and a second sliding element 182 is disposed on the other side of the stabilizing element 181 .

[0195] In some embodiments, the second sliding element 182 is fixedly connected to the stabilizing element 181 , including but not limited to being integrally formed.

[0196] In some embodiments, the second sliding element 182 is made of stainless steel.

[0197] In some embodiments, the second sliding element 182 is a sliding block.

[0198] The cross section of the rotating element 183 is circular.

[0199] The size of the rotating element 183 matches the size of the stabilizing element 181. Specifically, the diameter of the rotating element 183 is smaller than the width of the stabilizing element 181, and the axial size (such as the depth) of the rotating element 183 is smaller than the height of the stabilizing element 181.

[0200] The size of the rotating element 183 matches the size of the operating element 171. Specifically, the diameter of the rotating element 183 is equal to the outer diameter of the operating element 171, and the axial size of the rotating element 183 is smaller than the axial size of the operating element 171.

[0201] In some embodiments, the rotating element 183 is rotationally connected to the operating element 171. For example, the rotating element 183 is connected to the operating element 171 via a bearing seat.

[0202] In some of the embodiments, the rotating element 183 is a rotating hole.

[0203] The method of using the utility model is as follows:

[0204] 1. Laying submarine cables

[0205] The submarine cable is passed through the cavity element 113 and passed through the body element 111 .

[0206] (ii) Installing the closing element 131

[0207] The closing element 131 is clamped into the first docking element 115 provided in the main body element 111 through the second docking element 133, and the second connecting element 134 corresponds to the first connecting element 116, and the second sliding element 182 corresponds to the first sliding element 114;

[0208] The fixing element 151 is threadedly connected to the first connecting element 116 through the second connecting element 134 and through the closing element 131 until the fixing element 151 is tightened, thereby completing the installation and fixing of the closing element 131 .

[0209] (III) Fixed submarine cables

[0210] Twist the control element 171 to move it downward along the axial direction of the guide element 161;

[0211] The stabilizing element 181 is driven by the operating element 171 to move vertically downward along the first sliding element 114 through the second sliding element 182, so that the stabilizing element 181 gradually approaches the surface of the submarine cable until it fits tightly against the submarine cable, thereby fixing the submarine cable between the cavity element 113 and the stabilizing element 181.

[0212] (IV) Laying operations

[0213] The submarine cable with the drag reduction structure 100 fixed thereon is placed in the pre-buried pipe through the first moving element 121 and the second moving element 141 for subsequent laying operations.

[0214] The advantage of the utility model lies in that by utilizing the cooperation between a plurality of first moving units and a second moving unit arranged around the outer side of a main unit, when the drag reduction structure moves into a pipeline, the submarine cable can be pulled in all directions as a moving point, thereby improving the pulling effect and avoiding the problem of uneven force in the pulling direction and breakage of the wire rope due to excessive force; by utilizing the cooperation between a closing unit, a guiding unit, a control unit and a stabilizing unit, the submarine cable can be fixed to the drag reduction structure to ensure the stability of the submarine cable pulling and improve practicality.

[0215] Example 2

[0216] This embodiment relates to a submarine cable system of the utility model.

[0217] like Fig.11 As shown, a submarine cable system comprises the drag reduction structure 100 and the submarine cable structure 200 as described in Example 1. The submarine cable structure 200 is in contact with the main unit 110 and the stabilizing unit 180 of the drag reduction structure 100 respectively.

[0218] Specifically, the submarine cable structure 200 abuts against the cavity element 113 and the stabilizing element 181 respectively.

[0219] In some of the embodiments, the submarine cable structure 200 is a submarine cable.

[0220] Furthermore, the submarine cable system further includes a pre-buried pipe structure 300. The pre-buried pipe structure 300 is in contact with the first moving unit 120 and the second moving unit 140 of the drag reduction structure 100 respectively.

[0221] Specifically, the embedded pipe structure 300 abuts against the first moving element 121 and the second moving element 141 respectively.

[0222] In some of the embodiments, the embedded pipe structure 300 is a laid pipeline.

[0223] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A drag reduction structure for submarine cable traction, characterized in that: include: A main unit (110), wherein the main unit (110) is arranged through the submarine cable; a plurality of first moving units (120), the plurality of first moving units (120) being distributed outside the main unit (110) and in contact with the pre-buried pipe, and being used to reduce movement resistance when the main unit (110) drives the submarine cable to move inside the pre-buried pipe; A closing unit (130), the closing unit (130) being detachably arranged inside the main body unit (110); a second moving unit (140), the second moving unit (140) being movably arranged outside the enclosed unit (130) and in contact with the pre-buried pipe, and being used to reduce movement resistance when the main unit (110) drives the submarine cable to move inside the pre-buried pipe; at least one fixing unit (150), the fixing unit (150) being detachably connected to the main unit (110) and the closing unit (130) respectively, and being used to fix the closing unit (130) to the main unit (110); A guide unit (160), the guide unit (160) being arranged at the bottom end of the closing unit (130) and connected to the closing unit (130); a control unit (170), the control unit (170) being movably connected to the guide unit (160) and configured to rotate along the circumference of the guide unit (160) and to reciprocate along the axial direction of the guide unit (160); A stabilizing unit (180), wherein the stabilizing unit (180) is movably arranged inside the main unit (110) and is rotatably connected to the control unit (170), and is used for reciprocating along the axial direction of the guide unit (160) under the action of the control unit (170) to fix the submarine cable between the main unit (110) and the stabilizing unit (180).

2. The drag reduction structure according to claim 1, characterized in that: The main body unit (110) comprises: A main body element (111), wherein the main body element (111) is arranged through the submarine cable; a plurality of first installation elements (112), wherein the plurality of first installation elements (112) are distributed outside the main body element (111) and are movably connected to corresponding first moving units (120); a cavity element (113), wherein the cavity element (113) is arranged through the main body element (111), the guide unit (160), the control unit (170) and the stabilizing unit (180) are arranged in sequence inside the cavity element (113), and the cavity element (113) is in contact with the submarine cable; at least one first sliding element (114), the first sliding element (114) being disposed inside the cavity element (113) and slidably connected to the stabilizing unit (180); at least one first docking element (115), wherein the first docking element (115) is disposed on the main body element (111), is communicated with the first sliding element (114), and is detachably connected to the closing unit (130); At least one first connecting element (116), wherein the first connecting element (116) is arranged inside the first docking element (115) and is detachably connected to the fixing unit (150).

3. The drag reduction structure according to claim 1, characterized in that: The first moving unit (120) comprises: A first moving element (121), the first moving element (121) is movably arranged outside the main unit (110) and in contact with the embedded pipe, and is used to reduce movement resistance when the main unit (110) drives the submarine cable to move inside the embedded pipe.

4. The drag reduction structure according to claim 1, characterized in that: The enclosed unit (130) comprises: a closing element (131), the closing element (131) being detachably arranged inside the main body unit (110); a second mounting element (132), the second mounting element (132) being arranged outside the closing element (131) and being movably connected to the second moving unit (140); at least one second docking element (133), the second docking element (133) being arranged at the end of the closing element (131) and being detachably connected to the main body unit (110); At least one second connecting element (134), wherein the second connecting element (134) is disposed through the second docking element (133) and is detachably connected to the fixing unit (150).

5. The drag reduction structure according to claim 1, characterized in that: The second moving unit (140) comprises: A second moving element (141), the second moving element (141) is movably arranged outside the closed unit (130) and in contact with the embedded pipe, and is used to reduce movement resistance when the main unit (110) drives the submarine cable to move inside the embedded pipe.

6. The drag reduction structure according to claim 1, characterized in that: The fixing unit (150) comprises: A fixing element (151), wherein the fixing element (151) is detachably connected to the main body unit (110) and the closing unit (130) respectively, and is used to fix the closing unit (130) to the main body unit (110).

7. The drag reduction structure according to claim 1, characterized in that: The guide unit (160) comprises: a guide element (161), wherein the guide element (161) is disposed at the bottom end of the closing unit (130) and is rotatably connected to the control unit (170); and / or The control unit (170) comprises: A control element (171), wherein the control element (171) is rotatably connected to the guide unit (160) and the stabilizing unit (180) respectively, and is used to rotate along the circumference of the guide unit (160) to drive the stabilizing unit (180) to reciprocate along the axial direction of the guide unit (160).

8. The drag reduction structure according to claim 1, characterized in that: The stabilizing unit (180) comprises: a stabilizing element (181), the stabilizing element (181) being movably disposed inside the main unit (110) and being used for reciprocating along the axial direction of the guide unit (160) under the action of the control unit (170) to fix the submarine cable between the main unit (110) and the stabilizing unit (180); at least one second sliding element (182), the second sliding element (182) being disposed at an end of the stabilizing element (181) and being slidably connected to the main body unit (110); A rotating element (183), wherein the rotating element (183) is disposed at the top end of the stabilizing element (181) and is rotatably connected to the control unit (170).

9. A submarine cable system, characterized in that: include: The drag reduction structure (100) according to any one of claims 1 to 8; A submarine cable structure (200), wherein the submarine cable structure (200) is in contact with the main unit (110) and the stabilizing unit (180) of the drag reduction structure (100) respectively.

10. The submarine cable system according to claim 9, characterized in that: Also includes: A pre-buried pipe structure (300), wherein the pre-buried pipe structure (300) is in contact with the first movable unit (120) and the second movable unit (140) of the drag reduction structure (100) respectively.

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