A cable for offshore platform

Abstract

The present invention discloses a cable for an offshore platform, and relates to the technical field of cable production. The present invention comprises a main cable, an inner sheath, an outer sheath and a connector; two adjacent outer sheaths are connected and fixed by a connector, and the connector comprises a fixing sleeve and an installation sleeve, and the fixing sleeve is plugged into the main cable. The present invention safely connects the cables by arranging connectors between several sections of cables, plugging the internal main cable with the main cable, and screwing and gluing the outer sheath to the cable, thereby improving the waterproof and corrosion resistance of the connection part; wherein, by arranging a connector with the same structure as the outer sheath layer, the protective layer of polyurethane rubber is used to enhance the waterproof and corrosion resistance, and the supporting layer of the metal wire mesh plate is used to provide rigidity for the sheath and the connector to avoid damage due to external pressure; by arranging polyurethane foam as an insulating connecting layer, it can expand and fill the gaps between the layers after encountering water vapor, thereby enhancing the waterproof and insulating properties.

Description

Technical Field

[0001] The invention belongs to the technical field of cable production, and in particular relates to a cable for an offshore platform. Background Art

[0002] Offshore platforms are offshore structures that have been vigorously developed by countries around the world in recent years. They mainly provide production and living facilities for drilling, oil production, transportation, observation, navigation, construction and other activities at sea. Since offshore platforms contain a variety of machinery and equipment, it is usually difficult to use electricity. For example, the cables of offshore platforms are prone to power safety problems and equipment operation conditions under long-term water vapor erosion, wave impact or collision and puncture of other structures. The existing offshore platform cables, such as the invention patent (CN111029002A), although solve some problems, do not have much improvement in the connection safety and structural composition between cables. In this regard, we design a cable for offshore platforms to improve the above-mentioned defects. Summary of the invention

[0003] The object of the present invention is to provide a cable for an offshore platform, so as to solve the problem that the existing offshore platform cables lack highly secure connectors.

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0005] The present invention is a cable for an offshore platform, comprising a main cable, an inner sheath, an outer sheath and a connector. The main cable comprises a plurality of conductors, and the conductors are intertwined and nested in the inner sheath; the outer sheath is nested with the inner sheath and fixed by adhesion; two adjacent outer sheaths are connected and fixed by a connector;

[0006] The connecting piece includes a fixing sleeve, a mounting sleeve and a conducting assembly, wherein the conducting assembly includes two conducting blocks, and the two conducting blocks are plugged into each other; the two opposite end surfaces of the mounting sleeve are adhered to the fixing sleeve to form an integral structure; the conducting block and the mounting sleeve are slidably matched, and a connecting spring is welded between the two conducting blocks to limit the distance between the two conducting blocks and prevent the remaining mounting sleeves from detaching;

[0007] One surface of the conductive block is in contact with the main cable and can conduct electricity when power is supplied; one conductive block is welded with a connecting groove tube, and the other conductive block is welded with a connecting guide rod, and the two adjacent conductive blocks are connected in series through the connecting groove tube and the connecting guide rod, which limit the telescopic sliding trajectory of the two conductive blocks while contacting and conducting electricity.

[0008] Furthermore, a plurality of spring-pressure plates are welded on the inner side of the fixing sleeve, and the peripheral side of the inner sleeve is in compression contact with the spring-pressure plates, so that the inner sleeve and the main cable can be fixed to the connector by mutually squeezing the inner sleeve through the spring-pressure plates to avoid falling off and power failure.

[0009] Furthermore, a plurality of sliding grooves are provided on the peripheral side surface of the conduction block, a plurality of sliding blocks are adhered to the inner side surface of the mounting sleeve, and the sliding blocks are engaged and slid with the sliding grooves, thereby further limiting the sliding track of the conduction block.

[0010] Furthermore, the wall of the outer sheath includes a protective layer, a supporting layer and two insulating connecting layers; the supporting layer is adhered and fixed to the insulating connecting layer on both opposite sides, and the outer insulating connecting layer is adhered and fixed to the protective layer on the surrounding side; the protective layer can provide the outermost preliminary protection for the cable as a whole, and has waterproof and anti-corrosion properties; the supporting layer provides a certain rigidity for the outer sheath to prevent the outer sheath from being damaged by impact, extrusion or pressure from sharp thorns; the insulating connecting layer is used to insulate the main cable from its external structure, and belongs to the innermost safety protection structure.

[0011] Furthermore, the peripheral side surface of the outer insulating connection layer and the inner side surface of the fixing sleeve are connected by threading, and the insulating connection layer and the fixing sleeve are adhered and fixed, which facilitates the connection, fixation and disassembly of several cable sections.

[0012] The outer sheath has the same layer structure as the installation sheath; the inner sheath is made of the same material as the insulating connection layer, both are polyurethane foam, which can expand when exposed to water vapor during use, fill the gaps between the layers, and enhance the waterproof and insulating functions; the protective layer is made of polyurethane rubber, which has good waterproof and anti-corrosion properties, and the supporting layer is a metal mesh plate, which can prevent the outer sheath from being damaged by external forces.

[0013] The present invention has the following beneficial effects:

[0014] The present invention arranges connectors between several cable sections, plugs the internal main cable therewith, and securely connects the cables by means of threaded connection and adhesive fixation of the external outer sheath, thereby improving the waterproof and corrosion-resistant performance of the connection parts; wherein, by arranging a connector with the same structure as the outer sheath layer, the waterproof and corrosion-resistant performance is enhanced by a protective layer of polyurethane rubber, and a supporting layer of a metal wire mesh plate is used to provide rigidity for the sheath and the connector to avoid damage caused by external pressure; and by arranging a polyurethane foam as an insulating connecting layer, it can expand and fill the gaps between the layers after encountering water vapor, thereby enhancing the waterproof and insulating performance.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the overall structure of a cable for an offshore platform of the present invention;

[0018] Figure 2 This is a front view of a cable for an offshore platform according to the present invention;

[0019] Figure 3 for Figure 2 Structural diagram of the middle section AA;

[0020] Figure 4 for Figure 3 A partial display of part B in the middle;

[0021] Figure 5 for Figure 3 A partial display of part C in the middle;

[0022] Figure 6 for Figure 3 A partial display of part D in the middle;

[0023] Figure 7 for Figure 3 Schematic diagram of the structure of EE in the middle section;

[0024] Figure 8 It is a schematic diagram of the structure of the outer sheath layer of the present invention.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1. Main cable; 2. Inner sheath; 3. Outer sheath; 4. Connector; 401. Fixing sleeve; 402. Mounting sleeve; 403. Conducting block; 404. Connecting spring; 4031. Connecting groove tube; 4032. Connecting guide rod; 4011. Spring pressure plate; 4033. Slide groove; 4021. Slider; 301. Protective layer; 302. Support layer; 303. Insulating connecting layer. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be understood that the terms "upper", "middle", "outer", "inner" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0029] Embodiment 1:

[0030] See also Figure 1-8 As shown, the present invention is a cable for an offshore platform, comprising a main cable 1, an inner sheath 2, an outer sheath 3 and a connector 4. The main cable 1 comprises a plurality of conductors, and the conductors are mutually intertwined and nested and installed inside the inner sheath 2; the outer sheath 3 is nested and installed with the inner sheath 2, and the two are bonded and fixed; two adjacent outer sheaths 3 are connected and fixed by a connector 4;

[0031] The connector 4 includes a fixing sleeve 401, a mounting sleeve 402 and a conducting assembly, wherein the conducting assembly includes two conducting blocks 403, and the two conducting blocks 403 are plugged into each other; both opposite end surfaces of the mounting sleeve 402 are adhered to the fixing sleeve 401 as an integral structure; the conducting blocks 403 and the mounting sleeve 402 are slidably matched, and a connecting spring 404 is welded between the two conducting blocks 403 to limit the distance between the two conducting blocks 403 and prevent the remaining mounting sleeves 402 from being separated;

[0032] One surface of the conductive block 403 is in contact with the main cable 1 and can conduct electricity when power is supplied; one conductive block 403 is welded with a connecting groove tube 4031, and the other conductive block 403 is welded with a connecting guide rod 4032, and the two adjacent conductive blocks 403 are connected in series through the connecting groove tube 4031 and the connecting guide rod 4032, which limit the telescopic sliding trajectory of the two conductive blocks 403 while contacting and conducting electricity.

[0033] Preferably, a plurality of spring-loaded plates 4011 are welded on the inner side of the fixing sleeve 401, and the side surfaces of the inner sleeve 2 are in compression contact with the spring-loaded plates 4011, so that the inner sleeve 2 and the main cable 1 can be fixed to the connector 4 by mutually squeezing the inner sleeve 2 through the spring-loaded plates 4011 to prevent them from falling off and causing power outages.

[0034] Preferably, a plurality of slide grooves 4033 are provided on the side surface of the conduction block 403 , a plurality of sliders 4021 are adhered to the inner side surface of the mounting sleeve 402 , and the sliders 4021 are engaged and slid with the slide grooves 4033 , thereby further limiting the sliding track of the conduction block 403 .

[0035] Embodiment 2:

[0036] In order to improve the waterproof and anti-corrosion performance of the cable, the sheath wall of the outer sheath 3 in the present invention includes a protective layer 301, a support layer 302 and two insulating connecting layers 303; the supporting layer 302 is adhered and fixed to the insulating connecting layer 303 on both opposite sides, and the outer insulating connecting layer 303 is adhered and fixed to the protective layer 301 on the surrounding side; the protective layer 301 can provide the outermost preliminary protection for the entire cable, and has waterproof and anti-corrosion properties; the supporting layer 302 provides a certain rigidity for the outer sheath 3 to prevent the outer sheath 3 from being damaged by impact, extrusion or pressure from spikes; the insulating connecting layer 303 is used to insulate the main cable 1 from its external structure, and belongs to the innermost safety protection structure.

[0037] Preferably, the outer insulating connecting layer 303 and the inner side of the fixing sleeve 401 are connected by threading, and the insulating connecting layer 303 and the fixing sleeve 401 are adhered and fixed, so as to facilitate the connection, fixation and disassembly of several cable sections;

[0038] Among them, the outer sheath 3 and the installation sleeve 402 have the same layer structure; the inner sheath 2 and the insulating connecting layer 303 are made of the same material, both of which are polyurethane foam, which can expand when encountering water vapor during use, can fill the gaps between the layers, and enhance the waterproof and insulating functions; the protective layer 301 is made of polyurethane rubber, which has good waterproof and anti-corrosion properties, and the supporting layer 302 is a metal mesh plate, which can prevent the outer sheath 3 from being damaged by external forces.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A cable for an offshore platform, comprising a main cable (1), an inner sheath (2), an outer sheath (3) and a connector (4), characterized in that: The main cable (1) comprises a plurality of conductors, and the conductors are intertwined and nested inside the inner sheath (2); the outer sheath (3) and the inner sheath (2) are nested and installed, and the two are bonded and fixed; two adjacent outer sheaths (3) are connected and fixed by a connector (4); The connecting member (4) comprises a fixing sleeve (401), a mounting sleeve (402) and a conducting assembly, wherein the conducting assembly comprises two conducting blocks (403), and the two conducting blocks (403) are plugged into each other; both opposite end surfaces of the mounting sleeve (402) are bonded to the fixing sleeve (401) to form an integral structure; the conducting block (403) and the mounting sleeve (402) are slidably matched, and a connecting spring (404) is welded between the two conducting blocks (403); One surface of the conductive block (403) is in contact with the main cable (1); one conductive block (403) is welded with a connecting groove tube (4031), and the other conductive block (403) is welded with a connecting guide rod (4032), and two adjacent conductive blocks (403) are plugged in series via the connecting groove tube (4031) and the connecting guide rod (4032); A plurality of spring-loaded plates (4011) are welded on the inner side surface of the fixed sleeve (401), and the peripheral side surface of the inner sleeve (2) is in compression contact with the spring-loaded plates (4011); The conductive block (403) is provided with a plurality of sliding grooves (4033) on the peripheral side surface, and the inner side surface of the mounting sleeve (402) is adhered with a plurality of sliding blocks (4021), and the sliding blocks (4021) are engaged and slidably engaged with the sliding grooves (4033).

2. The offshore platform cable according to claim 1, characterized in that: The outer sheath (3) comprises a protective layer (301), a supporting layer (302) and two insulating connecting layers (303); the supporting layer (302) is bonded and fixed to the insulating connecting layer (303) on two opposite sides, and the outer insulating connecting layer (303) is bonded and fixed to the protective layer (301) on its peripheral side.

3. A cable for an offshore platform according to claim 2, characterized in that: The peripheral side surface of the outer insulating connection layer (303) and the inner side surface of the fixing sleeve (401) are connected by threading, and the insulating connection layer (303) and the fixing sleeve (401) are bonded and fixed.

4. A cable for an offshore platform according to claim 3, characterized in that: The outer sheath (3) and the installation sleeve (402) have the same layer structure; the inner sheath (2) and the insulating connection layer (303) are made of the same material, both of which are polyurethane foam.

5. The offshore platform cable according to claim 4, characterized in that: The material of the protective layer (301) is polyurethane rubber, and the supporting layer (302) is a metal wire mesh plate.

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