CN115579181A - Fire-retardant moisture-resistant marine power cable - Google Patents

Abstract

The invention discloses a flame-retardant and tide-resistant marine power cable, which specifically relates to the technical field of power cables. A braided layer is provided, a wrapping layer is arranged inside the braided layer, an elastic layer is arranged inside the wrapping layer, an inner liner is arranged inside the elastic layer, a second waterproof layer is arranged inside the inner liner, and the second waterproof layer A cable core is arranged inside. The protective cover is used for buffering, then the elastic layer is used for buffering, and then the flexible layer is used for buffering. Through three layers of buffering, the damage to the cable caused by external force is reduced. At the same time, both the flame retardant layer and the elastic layer have good flame retardant effect. Cooperating with the protective sheath and the inner lining layer, the entire cable has a good flame-retardant effect, and the mutual cooperation of the first waterproof layer and the second waterproof layer can make the entire cable have a good moisture-proof function.

Description

A flame-retardant and tide-resistant marine power cable

technical field

The invention relates to the technical field of power cables, in particular to a flame-retardant and tide-resistant marine power cable.

Background technique

Marine power cable is a kind of marine cable, which is used for power, lighting and general control of various ships in rivers and seas and offshore oil platforms and other water structures. Marine power cables play a pivotal role in the ship's power system and are the lifeblood of the entire ship. It is responsible for the function of transmitting and distributing electrical energy for various electrical equipment on board.

At present, with the development of the electric power industry, various cables have also appeared. In order to better cope with the high humidity working environment on board, some cables have better moisture-proof performance, but the overall compressive performance and cushioning performance of this kind of cable The performance is poor. Under the action of large external force, the cable is easy to be crushed and damaged due to the small degree of deformation. Therefore, we propose a flame-retardant and tide-resistant marine power cable.

Contents of the invention

In order to overcome the deficiencies of the prior art, the invention provides a flame-retardant and tide-resistant marine power cable.

In order to solve the above technical problems, the present invention provides the following technical solutions: a flame-retardant and tide-resistant marine power cable, including a protective sheath, a first waterproof layer is provided outside the protective sheath, and a flame-retardant layer is provided inside the protective sheath , the inside of the flame-retardant layer is provided with a braided layer, the inside of the braided layer is provided with a wrapping layer, the inside of the wrapping layer is provided with an elastic layer, the inside of the elastic layer is provided with an inner liner, the inner A second waterproof layer is provided inside the liner, and a cable core is provided inside the second waterproof layer, and the cable core is composed of three inner cores twisted with each other, and each inner core is composed of a wire core, a wire An insulating layer outside the core and a flexible layer located outside the insulating layer, and a filling layer is arranged between the cable core and the second waterproof layer;

The elastic layer is twisted and woven from three elastic bodies, and each elastic body is composed of a fixed sleeve, a plurality of arc-shaped strips inside the fixed sleeve, and a central column located inside the plurality of arc-shaped strips.

As a preferred technical solution of the present invention, the plurality of arc-shaped strips on each elastic body are distributed in a circular array with the center of the fixed sleeve as the center of the array, and both sides of each arc-shaped strip are connected to the fixed sleeve. The inner wall surface of the sleeve is connected, one side of the middle part of each arc strip is connected with the outer surface of the central column, and each elastic body is integrally formed.

As a preferred technical solution of the present invention, the first waterproof layer is specifically an HDPE outer sheath, and is wrapped on the outer surface of the protective sheath by extrusion, and the second waterproof layer is composed of aluminum-plastic composite tape.

As a preferred technical solution of the present invention, the braiding layer is braided by tinned copper wires, and the wire core is made of tinned copper conductors.

As a preferred technical solution of the present invention, the filling layer is made of polypropylene foam threads.

As a preferred technical solution of the present invention, both the protective cover and the inner liner are made of neoprene.

As a preferred technical solution of the present invention, the flame-retardant layer is made of halogen-free low-smoke ethylene-propylene rubber, and the insulating layer is made of polyethylene material.

As a preferred technical solution of the present invention, the wrapping layer is a fixed material belt, and the flexible layer is made of natural rubber.

As a preferred technical solution of the present invention, the elastomer is made of the following raw materials in parts by weight: 100 parts of silicone rubber; 6 parts of fire-resistant ceramic glass powder; 10 parts of flame-retardant aluminum hydroxide, and 15 parts of white carbon black; 0.18 parts of vinyl ester resin; 0.6 parts of polyvinyl alcohol; 6 parts of platinum AG; 10 parts of platinum BG; 5 parts of color masterbatch; 5 parts of filler fine talcum powder.

As a preferred technical solution of the present invention, the specific preparation method of the elastomer is as follows:

S1, first weigh according to the weight ratio: 100 parts of silicone rubber; 6 parts of fire-resistant ceramic glass powder; 10 parts of flame retardant aluminum hydroxide, 15 parts of white carbon black; 0.18 parts of vinyl ester resin; 0.6 parts of polyvinyl alcohol ; 6 parts of platinum AG; 10 parts of platinum BG; 5 parts of masterbatch; 5 parts of filler fine talcum powder;

S2. Then raise the temperature of the internal mixer to 300 degrees, put 100 parts of silicone rubber into the internal mixer, and internally knead for five to ten minutes;

S3, with 6 parts of fire retardant ceramic glass powder; 10 parts of flame retardant aluminum hydroxide, 15 parts of white carbon black; 0.18 parts of vinyl ester resin; 0.6 part of polyvinyl alcohol; 6 parts of platinum AG; 10 parts of platinum BG; 5 parts 5 parts of color masterbatch; 5 parts of filler fine talcum powder are put into the internal mixer completed in the previous step, mixed for ten to fifteen minutes, and stirred at the same time, then cooled to obtain raw materials;

S4. The raw materials obtained in the previous step are extruded from the elastomer through thermoplastic extrusion equipment, and then a plurality of elastomers are twisted along the outer side of the inner lining layer by a stranding machine to form an elastic layer. The wrapping machine wraps the elastic layer with the wrapping layer, so as to fix the currently formed cable and avoid loosening.

Compared with prior art, the beneficial effect that the present invention can reach is:

1. The cable is acted on by an external force, buffered by the protective sheath, then buffered by the elastic layer, and then buffered by the flexible layer. Through three layers of buffering, the damage to the cable caused by the external force is reduced. At the same time, the flame retardant layer and the elastic layer are both It has a good flame retardant effect, and the combination of the protective cover and the inner lining makes the entire cable have a good flame retardant effect, and the cooperation of the first waterproof layer and the second waterproof layer can make the entire cable have a good moisture-proof function ;

2. Through the deformation of the arc-shaped strips, the deformable gap between multiple arc-shaped strips is used to make the cable itself have a certain deformation and buffer space, and the central column will not make the arc-shaped strips excessive. The deformation will cause the entire cable to be too soft, and the elastomer also has good flame retardancy. This design makes the entire elastic body have good cushioning and compression resistance, so that the entire cable will not be too easily when subjected to external forces on board damage, thereby increasing the service life of the entire cable and avoiding electrical hazards to the hull.

Description of drawings

Fig. 1 is a schematic diagram of the internal structure of the present invention.

FIG. 2 is a schematic diagram of a partially enlarged structure at A in FIG. 1 of the present invention.

Fig. 3 is a schematic diagram of the structure of the elastomer of the present invention.

Among them: 1. The first waterproof layer; 2. Protective cover; 3. Flame-retardant layer; 4. Braided layer; 5. Wrapping layer; 6. Elastic layer; 7. Inner lining layer; Inner core; 10, wire core; 11, insulating layer; 12, flexible layer; 13, fixed sleeve; 14, arc strip; 15, central column; 16, elastomer; 17, filling layer.

detailed description

As shown in Figures 1 to 3, a flame-retardant and tide-resistant marine power cable includes a protective sheath 2, a first waterproof layer 1 is arranged on the outside of the protective sheath 2, and a flame-retardant layer 3 is arranged inside the protective sheath 2, and the flame-retardant The inside of the layer 3 is provided with a braided layer 4, the inside of the braided layer 4 is provided with a wrapping layer 5, the inside of the wrapping layer 5 is provided with an elastic layer 6, the inside of the elastic layer 6 is provided with a lining layer 7, and the inside of the lining layer 7 The second waterproof layer 8 is provided, and the inside of the second waterproof layer 8 is provided with a cable core. The cable core is formed by twisting three inner cores 9 each other. layer 11 and a flexible layer 12 located outside the insulating layer 11, and a filling layer 17 is arranged between the cable core and the second waterproof layer 8;

The elastic layer 6 is twisted and braided by three elastic bodies 16, and each elastic body 16 consists of a fixed sleeve 13, a plurality of arc-shaped strips 14 inside the fixed sleeve 13, and a central column located inside the plurality of arc-shaped strips 14. 15; when an external force acts on the cable, it will first be buffered through the protective sheath 2, then buffered through the elastic layer 6, and then buffered through the flexible layer 12. Through three layers of buffering, the damage to the cable caused by the external force is reduced, and at the same time Both the flame retardant layer 3 and the elastic layer 6 have a good flame retardant effect, together with the protective sheath 2 and the inner lining layer 7, the entire cable has a good flame retardant effect, and the first waterproof layer 1 and the second waterproof layer 8 The mutual cooperation can make the whole cable have good moisture-proof function.

A plurality of arc-shaped strips 14 on each elastic body 16 are distributed in a circular array with the center of the fixed sleeve 13 as the center of the array, and both sides of each arc-shaped strip 14 are connected with the inner wall of the fixed sleeve 13, each One side of the middle part of each arc strip 14 is connected with the outer surface of the central column 15, and each elastic body 16 is integrally formed; when an external force acts on the cable, the arc strip 14 will be deformed. The deformable gap between the two arc-shaped strips 14 makes the cable itself have a certain deformation and buffer space, avoiding direct damage under the action of external force, and the central column 15 provided will not make the arc-shaped strips 14 excessive deformation, causing the entire cable to be too soft, and when the external force is removed, the arc-shaped strip 14 will return to its original shape. This design makes the entire elastic body 16 have good cushioning and compression resistance, so that the entire cable will not suffer from external forces on board. It is too easy to be damaged, thereby improving the service life of the entire cable and avoiding electrical hazards to the hull.

The first waterproof layer 1 is specifically an HDPE outer sheath, and is wrapped on the outer surface of the protective sheath 2 by extrusion, and the second waterproof layer 8 is composed of aluminum-plastic composite tape; by setting the first waterproof layer 1 and the second waterproof layer 8. The entire cable has a good moisture-proof function, so that when the cable is used on a ship, it can cope with the environment with high air humidity.

The braiding layer 4 is braided by tinned copper wires, and the core 10 is made of tinned copper conductors; the braided layer 4 braided by tinned copper wires can minimize the volume of the entire cable after it is assembled, thereby avoiding occupying space on board.

The filling layer 17 is made of polypropylene foam thread; the protective cover 2 and the inner lining layer 7 are both made of neoprene; neoprene has excellent anti-oxidation and anti-ozone properties, is not flammable, and can self-extinguish after catching fire. Oil resistance, solvent resistance, acid and alkali resistance, aging resistance, and good airtight performance are used as the protective sheath 2 and the inner lining layer 7, which not only makes the entire cable have a better flame retardant effect, but also prolongs the service life of the entire cable.

The flame-retardant layer 3 is made of halogen-free low-smoke ethylene-propylene rubber, and the insulating layer 11 is made of polyethylene material; the ethylene-propylene rubber has excellent performance in ozone resistance, ultraviolet resistance, weather resistance and aging resistance, and its electrical insulation, The chemical resistance and impact elasticity are very good, and it is also resistant to high temperature. The flame retardant layer 3 made of ethylene propylene rubber can also have a long service life under long-term high temperature conditions, which can make the entire cable have good heat resistance and Flame retardant performance, while the insulating layer 11 is made of polyethylene material, and the good insulation performance of polyethylene is used to make the inner core 9 have better insulation performance in actual use, thereby improving the safety of the cable.

The wrapping layer 5 is a fixed material belt, and the flexible layer 12 is made of natural rubber; the fixed material belt wraps and fixes the braided elastic layer 6 round by circle, and the flexible layer 12 utilizes natural rubber with high elasticity and high elongation strength. The advantages of excellent tear resistance and electrical insulation, good wear resistance and drought resistance can make the entire cable have better flexibility and cushioning performance.

Elastomer 16 is made of the following raw materials in parts by weight: 100 parts of silicone rubber; 6 parts of fire-resistant ceramic glass powder; 10 parts of flame retardant aluminum hydroxide, 15 parts of white carbon black; 0.18 parts of vinyl ester resin; 0.6 parts of polyethylene Alcohol; 6 parts of platinum AG; 10 parts of platinum BG; 5 parts of masterbatch; 5 parts of filler fine talcum powder.

Elastomer 16 concrete preparation method is as follows:

S1, first weigh according to the weight ratio: 100 parts of silicone rubber; 6 parts of fire-resistant ceramic glass powder; 10 parts of flame retardant aluminum hydroxide, 15 parts of white carbon black; 0.18 parts of vinyl ester resin; 0.6 parts of polyvinyl alcohol ; 6 parts of platinum AG; 10 parts of platinum BG; 5 parts of masterbatch; 5 parts of filler fine talcum powder;

S2. Then raise the temperature of the internal mixer to 300 degrees, put 100 parts of silicone rubber into the internal mixer, and internally knead for five to ten minutes;

S3, with 6 parts of fire retardant ceramic glass powder; 10 parts of flame retardant aluminum hydroxide, 15 parts of white carbon black; 0.18 parts of vinyl ester resin; 0.6 part of polyvinyl alcohol; 6 parts of platinum AG; 10 parts of platinum BG; 5 parts 5 parts of color masterbatch; 5 parts of filler fine talcum powder are put into the internal mixer completed in the previous step, mixed for ten to fifteen minutes, and stirred at the same time, then cooled to obtain raw materials;

S4. Extrude the elastic body 16 from the raw material obtained in the previous step through a thermoplastic extrusion equipment, and then twist a plurality of elastic bodies 16 along the outer side of the inner lining layer 7 through a stranding machine to form the elastic layer 6, and twist At the same time, the wrapping layer 5 is used to wrap the elastic layer 6 by the wrapping machine, so that the currently formed cable is fixed to avoid loosening;

The elastomer 16 produced by this preparation method has certain flame-retardant properties and better high-elasticity properties, so that the entire elastic layer 6 not only has better flame-retardant properties but also has better high-elasticity properties.

Performance\rubber type elastomer Ordinary silicone rubber Ordinary flame retardant rubber elasticity powerful stronger generally flame retardant stronger generally powerful

Performance comparison table of elastomer 16 and ordinary silicone rubber and ordinary flame-retardant rubber:

In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "under" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and those described in the above-mentioned embodiments and description are only preferred examples of the present invention, and are not intended to limit the present invention, without departing from the spirit and scope of the present invention. Under the premise, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (10)

1. A flame-retardant and tide-resistant marine power cable, comprising a protective sheath (2), characterized in that: the outside of the protective sheath (2) is provided with a first waterproof layer (1), and the inside of the protective sheath (2) A flame-retardant layer (3) is provided, and a braided layer (4) is arranged inside the flame-retardant layer (3), and a wrapping layer (5) is arranged inside the braided layer (4), and the wrapping layer (5) ) is provided with an elastic layer (6), the interior of the elastic layer (6) is provided with a lining layer (7), and the interior of the lining layer (7) is provided with a second waterproof layer (8), so The inside of the second waterproof layer (8) is provided with a cable core, the cable core is composed of three inner cores (9) twisted with each other, and each of the inner cores (9) is composed of a wire core (10), located on the wire An insulating layer (11) outside the core (10) and a flexible layer (12) located outside the insulating layer (11), and a filling layer (17) is arranged between the cable core and the second waterproof layer (8); The elastic layer (6) is twisted and braided by three elastic bodies (16), and each elastic body (16) consists of a fixed sleeve (13), a plurality of arc-shaped strips located inside the fixed sleeve (13) (14) and the center post (15) that is positioned at a plurality of arc strips (14) interior constitutes. 2. A flame-retardant and tide-resistant marine power cable according to claim 1, characterized in that: each of the elastic body (16) has a plurality of arc-shaped strips (14) with the center of the fixed sleeve (13) The center of the array is distributed in a circular array, and both sides of each arc-shaped strip (14) are connected with the inner wall of the fixed sleeve (13), and one side of each arc-shaped strip (14) middle part is connected with The outer surfaces of the central column (15) are connected, and each of the elastic bodies (16) is integrally formed. 3. A flame-retardant and tide-resistant marine power cable according to claim 1, characterized in that: the first waterproof layer (1) is specifically an HDPE outer sheath, and is wrapped in the protective sheath (2) by extrusion The outer surface of the second waterproof layer (8) is made of aluminum-plastic composite tape. 4. A flame-retardant and tide-resistant marine power cable according to claim 1, characterized in that: the braiding layer (4) is braided by tinned copper wires, and the core (10) is made of tinned copper conductors constitute. 5. A flame-retardant and tide-resistant marine power cable according to claim 1, characterized in that: the filling layer (17) is made of polypropylene foam wire. 6. A flame-retardant and tide-resistant marine power cable according to claim 1, characterized in that: both the protective sheath (2) and the inner lining (7) are made of neoprene. 7. A flame-retardant and tide-resistant marine power cable according to claim 1, characterized in that: the flame-retardant layer (3) is made of halogen-free low-smoke ethylene-propylene rubber, and the insulating layer (11) is made of polyethylene Made of vinyl. 8. A flame-retardant and tide-resistant marine power cable according to claim 1, characterized in that: the wrapping layer (5) is a fixed tape, and the flexible layer (12) is made of natural rubber. 9. A flame-retardant and tide-resistant marine power cable according to claim 1, characterized in that: the elastomer (16) is made of the following raw materials in parts by weight: 100 parts of silicone rubber; 6 parts of fire-resistant ceramic glass powder; 10 parts of flame retardant aluminum hydroxide, 15 parts of white carbon black; 0.18 parts of vinyl ester resin; 0.6 parts of polyvinyl alcohol; 6 parts of platinum AG; 10 parts of platinum BG; 5 parts of color masterbatch; 5 parts of filler fine talcum powder . 10. A flame-retardant and tide-resistant marine power cable according to claim 9, characterized in that: the specific preparation method of the elastomer (16) is as follows: S1, first weigh according to the weight ratio: 100 parts of silicone rubber; 6 parts of fire-resistant ceramic glass powder; 10 parts of flame retardant aluminum hydroxide, 15 parts of white carbon black; 0.18 parts of vinyl ester resin; 0.6 parts of polyvinyl alcohol ; 6 parts of platinum AG; 10 parts of platinum BG; 5 parts of masterbatch; 5 parts of filler fine talcum powder; S2. Then raise the temperature of the internal mixer to 300 degrees, put 100 parts of silicone rubber into the internal mixer, and internally knead for five to ten minutes; S3, with 6 parts of fire retardant ceramic glass powder; 10 parts of flame retardant aluminum hydroxide, 15 parts of white carbon black; 0.18 parts of vinyl ester resin; 0.6 part of polyvinyl alcohol; 6 parts of platinum AG; 10 parts of platinum BG; 5 parts 5 parts of color masterbatch; 5 parts of filler fine talcum powder are put into the internal mixer completed in the previous step, mixed for ten to fifteen minutes, and stirred at the same time, then cooled to obtain raw materials; S4. Extrude the elastomer (16) from the raw material obtained in the previous step through thermoplastic extrusion equipment, and then twist a plurality of elastomers (16) along the outer side of the inner liner (7) through a stranding machine to form The elastic layer (6) also utilizes the wrapping layer (5) to wrap the elastic layer (6) by the wrapping machine while twisting, thereby the cables formed at present are fixed to avoid loosening.

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