Marine lightweight power cable and processing device thereof

Abstract

The application discloses a marine light-weight power cable and a processing device thereof, wherein the marine light-weight power cable comprises a plurality of twisted wires, a fireproof tape and a corrugated pipe sheath; the twisted wires comprise a plurality of conductors, and the surfaces of the conductors are wrapped with insulating layers; the fireproof tape is wound on the surfaces of the twisted wires to form a fireproof layer; the twisted wires with the fireproof tape are arranged in the corrugated pipe sheath, and the fireproof tape on the surfaces of the twisted wires is in abutment with the inner wall of the corrugated pipe sheath; and the processing device is used for processing the marine light-weight power cable. Through the above arrangement, the power cable has the characteristics of light weight and the advantage of being capable of being arbitrarily bent.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of marine cables and corresponding processing devices, and particularly relates to a marine lightweight power cable and a processing device thereof. BACKGROUND

[0002] Marine cables are power, lighting, control, communication transmission cables for various ships on rivers and seas and offshore or marine buildings, including marine power cables, marine control cables, marine communication cables, etc. The laying space of marine cables is usually limited, so the armored structure adopts a wire braiding method, which is the biggest difference in structure from ordinary land power, control and communication cables.

[0003] However, due to the large amount of metal substances wrapped in the cable, the cable is heavy, which inevitably increases the load of the ship body when used on the ship, thereby increasing the energy consumption of the ship during operation. At the same time, the cable used on the ship has a heavy armored structure on the surface, so when wiring, if a corner position is encountered, there may be a situation that it cannot be turned well, and when it is arranged on the wall surface, it needs to be considered whether the wall surface can bear the corresponding weight, and sometimes a support needs to be arranged on the wall surface for support. SUMMARY

[0004] In order to overcome the shortcomings of the prior art, the purpose of the present application is to provide a marine lightweight power cable and a processing device thereof, wherein the power cable has the characteristics of light weight and can be arbitrarily bent, and the processing device is used for processing the corresponding power cable.

[0005] The purpose of the present application is achieved by the following technical solutions:

[0006] A marine lightweight power cable comprises:

[0007] A plurality of twisted conductors, the conductors comprising a plurality of twisted conductors, and the surfaces of the twisted conductors being wrapped with an insulating layer;

[0008] A fire-resistant tape, the fire-resistant tape being wound around the surfaces of the plurality of twisted conductors to form a fire-resistant layer;

[0009] A corrugated tube sheath, the plurality of conductors with the fire-resistant tape being arranged in the corrugated tube sheath, and the fire-resistant tape on the surfaces of the plurality of twisted conductors abutting against the inner wall of the corrugated tube sheath.

[0010] Further, a heat insulation and fireproof layer is arranged on the surface of the fire-resistant layer.

[0011] Further, the insulation layer adopts mica tape, the mica tape is wound on the surface of the twisted conductor to form the insulation layer; the fireproof tape is made of glass fiber material; and the fireproof layer is made of mineral material.

[0012] Further, the diameter of the conductor is not more than 0.25 mm.

[0013] Further, the cross section of the bellows sheath is corrugated, and the thickness of the bellows sheath is 0.2-1.0 mm.

[0014] A processing device for processing the marine lightweight power cable, comprising:

[0015] A discharge cylinder for winding the semi-finished product of the marine lightweight power cable, wherein the bellows sheath of the semi-finished product is a thin tube;

[0016] A corrugation processing device arranged on one side of the discharge cylinder, comprising a rotating member, wherein the rotating end of the rotating member is provided with a ring body, the inner wall of the ring body is provided with corrugated threads, and when the thin tube passes through the ring body, the rotating member drives the ring body to rotate so that the corrugated threads extrude the surface of the thin tube to generate corrugation;

[0017] A moving clamping device, comprising a linear moving member and two clamping members, wherein the linear moving member has two sliders which move along the connecting line between the discharge cylinder and the corrugation processing device, the two clamping members are arranged on the two sliders respectively, the two clamping members are arranged on the two sides of the corrugation processing device respectively, and are used for clamping the front end and the rear end of the thin tube respectively and moving forward under the movement of the linear moving member;

[0018] A receiving cylinder for winding the processed marine lightweight power cable.

[0019] Further, the corrugated threads of the ring body comprise a primary pressing section, a transition section and a pressing section, the primary pressing section is arranged on the side close to the discharge cylinder, the pressing section is arranged on the side close to the receiving cylinder, the thread spacing of the primary pressing section, the transition section and the pressing section is the same, the thread depth of the primary pressing section, the transition section and the pressing section increases in turn, the thread of the primary pressing section is trapezoidal, the thread of the transition section is reverse-angle trapezoidal, and the thread of the pressing section is circular arc.

[0020] Further, the ring body is provided with a fixing ring at the end close to the discharge cylinder, the ring opening of the fixing ring is opposite to the ring opening of the ring body, and the inner circumferential surface of the fixing ring is embedded with spiral distributed heating members.

[0021] Further, the support is provided with a connecting ring, a ring-shaped groove is formed in the side surface of the ring body, the connecting ring is matched with the ring-shaped groove, and the ring body rotates about the axis of the connecting ring; a tooth surface is formed on the outer circumferential surface of the ring body, the rotating member comprises a driving member, a driving gear is connected to the driving end of the driving member, the driving gear is engaged with the tooth surface of the ring body, the driving member drives the rotation of the driving gear, and the driving gear drives the rotation of the ring body.

[0022] Further, the linear moving member is a screw module, the screw module drives the linear movement of the two sliding blocks, the clamping member is a clamping cylinder, and a buffer is arranged on the inner side of the clamping arm of the clamping cylinder; the distance between the two clamping members is 5-7 times the width of the corrugating device in the direction of the line connecting the two clamping members.

[0023] The present application has the following advantages:

[0024] 1、The marine lightweight power cable of the present application is provided with fireproof tape, heat insulation and fireproof layer and corrugated pipe sheath in sequence on several twisted wires. Since the diameter of the wire is small, and the fireproof tape and heat insulation and fireproof layer are made of lightweight material, the structure has the feature of no plasticization, and the production process does not need processing, and the overall weight of the cable structure is light, which can reduce the load of the ship body when applied to the ship. In addition, due to the arrangement of the fireproof tape and heat insulation and fireproof layer, the cable has the advantages of fire resistance, high temperature resistance, non-spontaneous combustion, non-diffusion and non-conduction. At the same time, due to the arrangement of the corrugated pipe sheath, the cable of the present application forms a flexible and freely bendable armored structure, which can effectively prevent rats and termites in physics, and has good pressure measurement protection capability to avoid mechanical damage. When wiring, the cable can be freely bent for installation, which has the advantage of convenient installation operation.

[0025] 2、The processing device of the present application is provided with a discharging cylinder, a corrugating device, a moving clamping device and a receiving cylinder to process the marine lightweight power cable of the present application. The discharging cylinder and the receiving cylinder can discharge and receive synchronously, so that the power cable semi-finished product between them is in a relative transverse state and can be transmitted forward. In this process, the two clamping members of the moving clamping device clamp the front and rear ends of the thin-walled pipe, and then the two clamping members and the clamped thin-walled pipe are driven by the linear moving member to move forward synchronously. In this process, the rotating member drives the rotation of the ring body, and at the same time, the corrugated thread inside the ring body extrudes the surface of the thin-walled pipe to form corresponding corrugations, so that the thickness of the thin-walled pipe is thinner and the function of being freely bendable is realized. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a cross-sectional view of the power cable structure of the present application.

[0027] Figure 2 is a cross-sectional view of the power cable of the present application.

[0028] Figure 3 is a schematic diagram of the overall structure of the processing device of the present application.

[0029] Figure 4 is a schematic diagram of the structure of the corrugation processing device and the moving clamping device of the present application.

[0030] Figure 5 is a schematic diagram of the cross-section of the ring body of the present application.

[0031] In the figure:

[0032] 1, conductor; 11, conductor; 12, insulating layer;

[0033] 2, fire-resistant tape;

[0034] 3, heat-insulating and fireproof layer;

[0035] 4, corrugated pipe sheath;

[0036] 5, discharging cylinder;

[0037] 6, corrugation processing device; 61, rotating member; 611, driving motor; 612, driving gear; 62, ring body; 621, fixed ring; 622, heating member; 623, tooth surface; 624, corrugated thread; 6241, initial pressing section; 6242, transition section; 6243, pressing section; 625, annular groove; 63, support; 631, connecting ring;

[0038] 7, moving clamping device; 71, linear moving member; 711, sliding block; 712, clamping member; 713, buffer member;

[0039] 8, material collecting cylinder. DETAILED DESCRIPTION

[0040] The present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The terms such as "upper", "inner", "middle", "left", "right", and "one" used in the present specification are only for the convenience of clear description, and are not intended to limit the scope of the present application. Changes or adjustments of the relative relationship without substantial changes in technical content are also considered as the scope of the present application.

[0041] The marine light-weight power cable of the present application and the processing device thereof, such as Figures 1 to 5As shown, the processing device is used to process the marine lightweight power cable of the present invention. The marine lightweight power cable of the present invention is made lightweight by providing fire-resistant wrapping tape 2 and corrugated sheath 4 on the surface of several stranded conductors 1. The corrugated sheath 4 improves the cable's bending capacity, thereby simplifying subsequent cable installation operations and effectively reducing the load on the ship. The marine lightweight power cable and its processing device of the present invention are described below by way of examples.

[0042] Example 1

[0043] A type of lightweight marine power cable, such as Figures 1 to 2 As shown, the device includes several stranded wires 1, fire-resistant wrapping tape 2, and a corrugated sheath 4. The wires 1 consist of several stranded conductors 11, each made of aluminum alloy. The diameter of a single conductor 11 does not exceed 0.25 mm, thus providing good flexibility. An insulating layer 12 covers the surface of each stranded conductor 11. The fire-resistant wrapping tape 2 is wound around the surface of the stranded wires 1 to form a fire-resistant layer. The fire-resistant wrapping tape 2 is made of fiberglass, providing excellent fire resistance. The corrugated sheath 4 is fitted over the surface of the wires 1 with the fire-resistant wrapping tape 2, and the fire-resistant wrapping tape 2 on the surface of the stranded wires 1 abuts against the inner wall of the corrugated sheath 4.

[0044] The marine lightweight power cable of the present invention also includes a heat-insulating and fire-resistant layer 3, which is disposed on the surface of the fire-resistant layer so that the heat-insulating and fire-resistant layer 3 is located between the fire-resistant layer and the corrugated pipe sheath 4. The heat-insulating and fire-resistant layer 3 is made of mineral materials and has better heat insulation and fire protection effects.

[0045] In this embodiment, the insulating layer 12 is made of mica tape, which is also known as fire-resistant mica tape. It has good high temperature resistance and fire resistance. The mica tape is wound around the surface of several stranded conductors 11 to form the insulating layer 12.

[0046] In this embodiment, the corrugated pipe sleeve 4 has a corrugated cross-section, and the threads of the corrugations in the cross-section of the corrugated pipe sleeve 4 are arc-shaped. The thickness of the corrugated pipe sleeve 4 is 0.2 mm to 1.0 mm; therefore, it has good bending and deformation capabilities. The corrugated pipe sleeve 4 is made of 304 stainless steel, thus providing physical protection against rodents and termites, pressure testing, and mechanical damage.

[0047] Thus, the marine light-weight power cable of the present application is provided with fire-resistant tape 2, heat-insulating fireproof layer 3 and corrugated pipe sheath 4 in sequence on several twisted wires 1. Since the wires 1 are thin in diameter, and the fire-resistant tape 2 and heat-insulating fireproof layer 3 are made of light-weight materials, the structure has the feature of no plasticization, and the production process does not need processing. Meanwhile, the overall structure of the cable is light in weight, which can reduce the load of the ship body when applied to the ship. In addition, due to the provision of the fire-resistant tape 2 and heat-insulating fireproof layer 3, the cable has the advantages of fire resistance, high temperature resistance, non-spontaneous combustion, non-diffusion and non-conduction. At the same time, due to the provision of the corrugated pipe sheath 4, the cable of the present application forms a flexible and freely bendable armored structure, which can effectively prevent rats and termites in physics, and has good pressure measurement protection capability to avoid mechanical damage. When wiring, the cable can be freely bent for installation, which has the advantage of convenient installation operation.

[0048] Example 2

[0049] A processing device for a marine light-weight power cable, as shown in Figures 1 to 4 , is used for processing the marine light-weight power cable of the above-mentioned example 1, which mainly comprises a discharging cylinder 5, a corrugated processing device 6, a moving clamping device 7 and a receiving cylinder. The discharging cylinder 5 of the present application is used for winding the semi-finished product of the marine light-weight power cable, and the corrugated pipe sheath 4 of the semi-finished product of the marine light-weight power cable is a thin pipe at this time. The corrugated processing device 6 is used for processing the surface of the thin pipe to form corrugations, so as to process the thin pipe into the corrugated pipe sheath 4. The moving clamping member 712 is used for clamping the parts on both sides of the marine light-weight power cable to be processed relative to the corrugated processing device 6, and then quantitatively feeding to the receiving cylinder. In this process, the corrugated processing device 6 synchronously processes the thin pipe with corrugations, and the moving clamping member 712 can preferably reduce the self-rotation of the marine light-weight power cable.

[0050] The discharging cylinder 5 of the present application is an electrically controlled discharging cylinder 5, which can realize the functions of positive rotation for receiving or reverse rotation for discharging through motor control.

[0051] The corrugated processing device 6 of the present application is arranged on one side of the discharging cylinder 5, and the corrugated processing device 6 comprises a rotating member 61, the rotating end of the rotating member 61 is provided with a ring body 62, the inner wall of the ring body 62 is provided with corrugated screw threads 624, and when the thin pipe passes through the ring body 62, the rotating member 61 drives the ring body 62 to rotate, so as to make the corrugated screw threads 624 extrude the surface of the thin pipe to generate corrugations.

[0052] In this embodiment, as shown in Figures 3 to 5As shown, in order to realize the function of rotating the ring body 62 by the rotating member 61. The machining device of the present application further comprises a bracket 63 provided with a connecting ring 631, the cross section of the connecting ring 631 is T-shaped, the side surface of the ring body 62 is provided with an annular groove 625, the cross section of the annular groove 625 is T-shaped, the connecting ring 631 is matched with the annular groove 625, and the ring body 62 rotates about the axis of the connecting ring 631. The outer peripheral surface of the ring body 62 is provided with a tooth surface 623 in the annular direction, the rotating member 61 comprises a driving member, the driving end of the driving member is connected with a driving gear 612, the driving gear 612 is engaged with the tooth surface 623 of the ring body 62, the driving member drives the driving gear 612 to rotate, and the driving gear 612 drives the ring body 62 to rotate.

[0053] In the embodiment, in order to facilitate the corrugated thread 624 to extrude corresponding corrugations on the surface of the thin-walled pipe. The corrugated thread 624 of the ring body 62 comprises a primary pressing section 6241, a transition section 6242 and a pressing section 6243, the primary pressing section 6241 is located on the side close to the discharging cylinder 5, the pressing section 6243 is located on the side close to the collecting cylinder, the thread spacing of the primary pressing section 6241, the transition section 6242 and the pressing section 6243 is the same, the thread depth of the primary pressing section 6241, the transition section 6242 and the pressing section 6243 increases in turn, the thread of the primary pressing section 6241 is trapezoidal (the trapezoid is specifically isosceles trapezoidal), the thread of the transition section 6242 is inverted corner trapezoidal (the inverted corner trapezoid is specifically isosceles trapezoidal with two inverted corners), and the thread of the pressing section 6243 is circular arc.

[0054] Therefore, by dividing the corrugated thread 624 into the primary pressing section 6241, the transition section 6242 and the pressing section 6243, since the thread spacing of the three is the same, and the depth gradually increases, and the shape gradually transitions from the trapezoidal shape with corners to the inverted corner and circular arc shape, the ability of the corrugated thread 624 to extrude the thin-walled pipe to form corrugations can be gradually improved. Specifically, when the primary pressing section 6241 extrudes the thin-walled pipe, the two top corners of the isosceles trapezoidal of the primary pressing section 6241 will extrude the surface of the thin-walled pipe to produce deformation, to achieve the function of better destroying the surface stress; further, when the transition section 6242 extrudes the thin-walled pipe, the two inverted corners of the inverted corner trapezoidal of the transition section 6242 will further extrude the position of the thin-walled pipe that has been preliminarily deformed by the top corner of the primary pressing section 6241, to make the position further deformed more deeply; finally, when the pressing section 6243 extrudes the thin-walled pipe, the arc surface can completely extrude the part of the thin-walled pipe that has been extruded by the transition section 6242 into an arc shape, and completely fit with the inner wall of the pressing section 6243. At the same time, in the process of continuously rotating the ring body 62 by the rotating member 61 and continuously moving the marine lightweight power cable forward by the linear moving member 71, the surface of the thin-walled pipe can be made to produce corresponding corrugations by the corrugated thread 624 of the inner wall of the ring body 62, so as to form the corrugated pipe sheath 4 of embodiment 1 for the thin-walled pipe, and the marine lightweight power cable of the embodiment is machined and formed.

[0055] Meanwhile, the ring body 62 is provided with a fixing ring 621 near one end of the discharge cylinder 5, the fixing ring 621 is made of heat-conducting material, the ring opening of the fixing ring 621 is opposite to the ring opening of the ring body 62, the ring opening of the fixing ring 621 is larger than the ring opening of the ring body 62, and the inner circumferential surface of the fixing ring 621 is embedded with the spiral distributed heating element 622, which can adopt an electric heating wire. Therefore, the heating element 622 can first preheat the surface of the thin-walled pipe, so as to facilitate the subsequent corrugation processing.

[0056] As shown in Figures 3 to 5 The mobile clamping device 7 of the present application includes a linear moving part 71 and two clamping parts 712, the linear moving part 71 has two sliders 711, the linear moving part 71 drives the two sliders 711 to move synchronously, the moving direction of the sliders 711 is the connecting line between the discharge cylinder 5 and the corrugation processing device 6, and the two clamping parts 712 are respectively arranged on the two sliders 711 and are respectively arranged on the two sides of the corrugation processing device 6, for clamping the front end and the rear end of the thin-walled pipe respectively, so as to limit the rotation of the thin-walled pipe, thereby improving the effectiveness of processing the corrugation of the thin-walled pipe and having the beneficial effect of improving the processing efficiency.

[0057] In the embodiment, the linear moving part 71 adopts a screw rod module, the two sliders 711 are both in sliding connection with the base of the screw rod module, and the two sliders 711 are both in thread cooperation with the screw rod of the screw rod module, so as to drive the two sliders 711 to move linearly by using the screw rod module, and the clamping part 712 of the embodiment adopts a clamping cylinder, the inner side of the clamping arm of the clamping cylinder is provided with a buffer 713, which can adopt a rubber pad. Therefore, when the corrugation processing device 6 processes the corrugation of the thin-walled pipe, the thin-walled pipe can be firmly clamped by using the clamping part 712 and the rubber pad, and the processed thin-walled pipe and the internal attached power cable can be transmitted to the discharge cylinder direction by using the screw rod module synchronously.

[0058] The distance between the two clamping parts 712 is 5-7 times the width of the corrugation processing device 6 in the direction of the connecting line of the two clamping parts 712. Therefore, by limiting the distance between the two clamping parts 712, the tension stress of the corrugated pipe about the middle position between the two clamping parts 712 is maintained in a relatively large stress range, so as to reduce the rotation of the thin-walled pipe, thereby improving the effectiveness of processing and improving the processing efficiency.

[0059] The discharge cylinder of the present application is used for winding the processed marine light power cable of the embodiment 1.

[0060] In summary, the processing device of the present application processes the marine lightweight power cable by setting the discharging barrel 5, the corrugation processing device 6, the moving clamping device 7 and the receiving barrel, and the power cable semi-product between the discharging barrel 5 and the receiving barrel is in a relative transverse state and can be transmitted forward by discharging the discharging barrel 5 and receiving the receiving barrel synchronously; in the process, the front and rear ends of the thin pipe can be clamped by the two clamping pieces 712 of the moving clamping device 7, then the two clamping pieces 712 and the clamped thin pipe are driven to move forward synchronously by the linear moving piece 71, in the process, the ring body 62 is driven to rotate by the rotating piece 61, and the surface of the thin pipe is extruded by the corrugated screw thread 624 in the ring body 62 to form corresponding corrugations, so that the thickness of the thin pipe is thinner, and the function of being able to be bent arbitrarily is realized.

[0061] The embodiments of the present application are not limited to this, and according to the above content of the present application, other various forms of modifications, replacements or combinations can be made by using the ordinary technical knowledge and means in the art without departing from the above basic technical idea of the present application, and all fall within the protection scope of the present application.

Claims

1. A processing apparatus for marine lightweight power cables, used for processing marine lightweight power cables, characterized in that, include: The marine lightweight power cable includes several stranded conductors, fire-resistant tape, corrugated sheath, and heat-insulating and fireproof layer. The conductor comprises several stranded conductors, the surfaces of which are covered with an insulating layer; the insulating layer is made of mica tape, which is wound around the surfaces of the stranded conductors to form the insulating layer; the fire-resistant wrapping tape is made of fiberglass material; the heat-insulating and fireproof layer is made of mineral material; the diameter of the conductor does not exceed 0.25 mm; The fire-resistant wrapping tape is wound around the surface of several stranded wires to form a fire-resistant layer; A plurality of the conductors with the fire-resistant wrapping tape are disposed inside the corrugated pipe sheath, and the fire-resistant wrapping tape on the surface of the plurality of stranded conductors abuts against the inner wall of the corrugated pipe sheath; the cross-section of the corrugated pipe sheath is corrugated, and the thickness of the corrugated pipe sheath is 0.2 mm to 1.0 mm. The heat-insulating and fire-resistant layer is disposed on the surface of the fire-resistant layer; The processing device for the marine lightweight power cable includes a discharge cylinder, a corrugated processing device, a moving clamping device, and a receiving cylinder. The discharge cylinder is used to wind up the semi-finished product of the marine lightweight power cable, and the corrugated sheath of the semi-finished product of the marine lightweight power cable is a thin tube. The corrugated processing device is located on one side of the discharge cylinder. The corrugated processing device includes a rotating component. The rotating end of the rotating component is provided with a ring body. The inner wall of the ring body is provided with corrugated threads. When the thin tube passes through the ring body, the rotating component drives the ring body to rotate, so that the corrugated threads squeeze the surface of the thin tube to generate corrugations. The moving clamping device includes a linear moving member and two clamping members. The linear moving member has two sliders. The sliders move along the line connecting the discharge cylinder and the corrugated processing device. The two clamping members are respectively disposed on the two sliders and on both sides of the corrugated processing device. They are used to clamp the front end and the rear end of the thin tube respectively, and move forward under the movement of the linear moving member. The take-up drum is used to wind up the processed marine lightweight power cable; The corrugated thread of the ring body includes an initial pressing section, a transition section, and a pressing section. The initial pressing section is located on the side closer to the discharge cylinder, and the pressing section is located on the side closer to the receiving cylinder. The thread spacing of the initial pressing section, the transition section, and the pressing section is the same. The thread depth of the initial pressing section, the transition section, and the pressing section increases sequentially. The thread of the initial pressing section is trapezoidal, the thread of the transition section is a rounded trapezoid, and the thread of the pressing section is an arc shape.

2. The marine lightweight power cable and its processing apparatus as described in claim 1, characterized in that, A fixing ring is provided at one end of the ring body near the discharge cylinder. The opening of the fixing ring is directly opposite the opening of the ring body. Heating elements are embedded in the inner circumferential surface of the fixing ring in a spiral distribution.

3. The marine lightweight power cable and its processing apparatus as described in claim 1, characterized in that, It also includes a bracket with a connecting ring, the side of the ring having an annular groove, the connecting ring being adapted to the annular groove, the ring rotating about the axis of the connecting ring; the outer circumferential surface of the ring having a toothed surface, the rotating component including a driving component, the driving end of the driving component being connected to a driving gear, the driving gear meshing with the toothed surface of the ring, the driving component driving the driving gear to rotate, the driving gear driving the ring to rotate.

4. The marine lightweight power cable and its processing apparatus as described in claim 1, characterized in that, The linear moving component is a lead screw module, which drives the two sliders to move linearly. The clamping component is a clamping cylinder, and a buffer is provided on the inner side of the clamping arm of the clamping cylinder. The distance between the two clamping components is 5 to 7 times the width of the corrugated processing device in the direction of the line connecting the two clamping components.

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