CN212461172U - Copper-core polyvinyl chloride insulating fire-resistant flexible cable - Google Patents
Copper-core polyvinyl chloride insulating fire-resistant flexible cable Download PDFInfo
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- CN212461172U CN212461172U CN202020894270.2U CN202020894270U CN212461172U CN 212461172 U CN212461172 U CN 212461172U CN 202020894270 U CN202020894270 U CN 202020894270U CN 212461172 U CN212461172 U CN 212461172U
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Abstract
The utility model discloses an insulating fire-resistant flexible cable of copper core polyvinyl chloride belongs to cable technical field, include: the first polyvinyl chloride protective outer sleeve layer with a circular section; the four first conductors are arranged in the first polyvinyl chloride protective outer sleeve layer in an annular array, the four first conductors are all contacted with the inner wall of the first polyvinyl chloride protective outer sleeve layer, and the cross sections of the first conductors are oval; the second conductor is arranged between the four first conductors and is in contact with the four first conductors, and the cross section of the second conductor is circular; fiber rope, fiber rope are provided with the multiunit, and the horizontal equidistance setting of multiunit fiber rope, and every fiber rope of group all is provided with four, and just every fiber rope connects between two adjacent first conductors, the utility model is suitable for a wider alternating voltage circuit satisfies different current-carrying capacities to the insulating reliability who makes the cable improves greatly, has prolonged the life of cable, and insulating properties is good.
Description
Technical Field
The utility model relates to the technical field of cables, more specifically say, relate to an insulating fire-resistant flexible cable of copper core polyvinyl chloride.
Background
With the continuous and rapid growth of economy in China, a huge market prospect is provided for the development of the cable industry. With the continuous expansion of the scale of industries such as electric power, communication, rail transit, automobiles, shipbuilding and the like, the demand for wires and cables is also rapidly increasing, and the wire and cable industry is expected to have huge development potential in the future.
There are a variety of cables on the market that are used in a variety of different applications. When a fire disaster happens, the ordinary fire-resistant cable cannot guarantee the continuous work of the line. In addition, the magnesium oxide insulated cable with the copper core and the copper sheath in the market has limited cable core number and poor insulation reliability due to the drawing process and the magnesium oxide used as cable insulation. In addition, the shielding effect is not ideal, and the outer sheath is easy to damage, so that the whole cable can be influenced in the actual use process.
At present, the requirements of various industries on cables are higher and higher, and in use, the cables are not only required to be prevented from mechanical damage, insulation aging and deterioration and the like, but also required to be used under a high-temperature condition, namely, the cables are resistant to high temperature. Meanwhile, the current carrying capacity of the cable is generally related to the sectional area of a conductor wire core, when the current is increased, the temperature of the conductor is increased, and when the temperature of an insulating layer coated outside the conductor exceeds an upper limit, the performance of the insulating layer is changed, so that the insulation reliability of the insulating layer is greatly reduced, and the service life of the cable is influenced.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved
To the problem that exists among the prior art, the utility model aims to provide an insulating fire-resistant flexible cable of copper core polyvinyl chloride, it is applicable to wider alternating voltage circuit, satisfies different current-carrying capacity to make the insulating reliability of cable improve greatly, prolonged the life of cable, insulating properties is good.
2. Technical scheme
In order to solve the above problem, the utility model adopts the following technical scheme:
a copper-core polyvinyl chloride insulated fire-resistant flexible cable, comprising:
the first polyvinyl chloride protective outer sleeve layer with a circular section;
the four first conductors are arranged in the first polyvinyl chloride protective outer sleeve layer in an annular array, the four first conductors are all in contact with the inner wall of the first polyvinyl chloride protective outer sleeve layer, and the cross section of each first conductor is oval;
the second conductor is arranged between the four first conductors and is in contact with the four first conductors, and the cross section of the second conductor is circular;
the fiber ropes are provided with a plurality of groups, the fiber ropes are transversely arranged at equal intervals, each group of fiber ropes is provided with four fiber ropes, each fiber rope is connected between two adjacent first conductors, a first gap is formed between the inner sides of the fiber ropes and the first polyvinyl chloride protective outer sleeve layer, and a second gap is formed between the inner sides of the fiber ropes and the second conductors;
a second flame retardant material filled in the first gap;
fill the refractory material in the second clearance, the utility model is suitable for a wider alternating voltage circuit satisfies different current-carrying capacities to the insulating reliability who makes the cable improves greatly, has prolonged the life of cable, and insulating properties is good.
As a preferable aspect of the present invention, the first conductor includes:
a second polyvinyl chloride protective outer sleeve layer with an oval section;
the two first cables are arranged in the second polyvinyl chloride protective outer sleeve layer and are respectively contacted with the left inner side wall and the right inner side wall of the second polyvinyl chloride protective outer sleeve layer, and the cross section of each first cable is circular;
the second cable is arranged between the two first cables and is in contact with the two first cables, the cross section of the second cable is oval, and third gaps are formed among the second cable, the two first cables and the second polyvinyl chloride protective outer sleeve layer;
and a first flame retardant material filled in the third gap.
As an optimized scheme of the utility model, first cable comprises from interior to exterior first copper core, first copper strips shielding layer and the first polyvinyl chloride insulating layer that sets gradually, the cladding of first copper strips shielding layer is on the circumferential surface of first copper core, the cladding of first polyvinyl chloride insulating layer is on the circumferential surface of first copper strips shielding layer.
As a preferred scheme of the utility model, the second cable comprises second copper core, second copper strips shielding layer, second polyvinyl chloride insulating layer and the first outer steel band armor that sets gradually from inside to outside, the cladding of second copper strips shielding layer is on the circumferential surface of second copper core, the cladding of second polyvinyl chloride insulating layer is on the circumferential surface of second copper strips shielding layer, the cladding of first outer steel band armor is on the circumferential surface of second polyvinyl chloride insulating layer.
As an optimized scheme of the utility model, the second conductor comprises the outer steel band armor of third copper core, third copper strips shielding layer, third polyvinyl chloride insulating layer and the second that from interior to exterior set gradually, the third copper core cladding is on the circumferential surface of third copper core, the cladding of third polyvinyl chloride insulating layer is on the circumferential surface of third copper strips shielding layer, the cladding of the outer steel band armor of second is on the circumferential surface of third polyvinyl chloride insulating layer, the cross-section of second conductor is circularly.
As a preferred embodiment of the present invention, each of the two end portions of the fiber rope is bonded with an adhesive.
3. Advantageous effects
Compared with the prior art, the utility model has the advantages of:
(1) the cross sections of the first conductor and the second conductor are respectively in an oval shape and a circular shape, so that the cable is suitable for wider alternating-current voltage circuits, different current-carrying capacities are met, the insulation reliability of the cable is greatly improved, and the service life of the cable is prolonged.
(2) According to the scheme, the cross sections of the first cable and the second cable are respectively in the circular and oval design, so that the alternating-current voltage circuit is applicable to wider alternating-current voltage circuits, different current-carrying capacities are met, the insulation reliability of the cables is greatly improved, and the service life of the cables is prolonged.
(3) The tensile strength of the cable is guaranteed through the arrangement of the plurality of groups of fiber ropes.
(4) According to the scheme, the second flame-retardant material and the fireproof material are arranged, so that the fireproof material has good flame-retardant performance and fireproof performance.
Drawings
Fig. 1 is a cross-sectional view of a copper-core polyvinyl chloride insulated fire-resistant flexible cable of the present invention;
fig. 2 is a cross-sectional view of a first conductor in the copper-core polyvinyl chloride insulating fire-resistant flexible cable of the present invention;
fig. 3 is a cross-sectional view of a second conductor in the copper core polyvinyl chloride insulating fire-resistant flexible cable of the present invention;
fig. 4 is the utility model discloses a copper core polyvinyl chloride insulating fire-resistant flexible cable's partial cut-away perspective view.
The reference numbers in the figures illustrate:
1 a first polyvinyl chloride protective outer jacket layer, 2 a first conductor, 21 a second polyvinyl chloride protective outer jacket layer, 22 a first copper core, 23 a first copper strip shielding layer, 24 a first polyvinyl chloride insulating layer, 25 a second copper core, 26 a second polyvinyl chloride insulating layer, 27 a first outer steel strip armor layer, 28 a second copper strip shielding layer, 29 a first flame retardant material, 3 a second conductor, 31 a third copper core, 32 a third copper strip shielding layer, 33 a third polyvinyl chloride insulating layer, 34 a second outer steel strip armor layer, 4 fiber ropes, 5 a second flame retardant material and 6 a fireproof material.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
referring to fig. 1-4, a copper-core pvc insulated fire-resistant flexible cable includes:
the first polyvinyl chloride protective outer sleeve layer 1 with a circular section has a good protective effect, so that the cable is effectively protected and is not easy to damage;
be four first conductors 2 of annular array setting in first polyvinyl chloride protects outer jacket layer 1, and four first conductors 2 all contact with the inner wall of first polyvinyl chloride protects outer jacket layer 1, and first conductor 2's cross-section is oval, and is concrete, and first conductor 2 includes: the second polyvinyl chloride protective outer sleeve layer 21 is oval in cross section, and the second polyvinyl chloride protective outer sleeve layer 21 has a good protective effect which is the same as that of the first polyvinyl chloride protective outer sleeve layer 1; two first cables arranged in a second pvc protective jacket layer the second pvc protective jacket layer 21, and two first cables are respectively contacted with the left and right inner side walls of the second polyvinyl chloride protective outer sleeve layer 21 of the second polyvinyl chloride protective outer sleeve layer, the cross section of each first cable is circular, each first cable is composed of a first copper core 22, a first copper strip shielding layer 23 and a first polyvinyl chloride insulating layer 24 which are sequentially arranged from inside to outside, the first copper strip shielding layer 23 is coated on the circumferential surface of the first copper core 22, the first polyvinyl chloride insulating layer 24 is coated on the circumferential surface of the first copper strip shielding layer 23, the first cable composed of the first copper core 22, the first copper strip shielding layer 23 and the first polyvinyl chloride insulating layer 24 has good performance, high transmission efficiency and low resistance, the energy loss on the cable is less, and the cable also has good shielding effect and good insulativity; the second cable is arranged between the two first cables, the second cable is contacted with the two first cables, the section of the second cable is oval, a third gap is formed between the second cable, the two first cables and the second polyvinyl chloride protective outer sleeve 21 of the second polyvinyl chloride protective outer sleeve, the second cable is composed of a second copper core 25, a second copper strip shielding layer 28, a second polyvinyl chloride insulating layer 26 and a first outer steel strip armor layer 27 which are sequentially arranged from inside to outside, the second copper strip shielding layer 28 is coated on the circumferential surface of the second copper core 25, the second polyvinyl chloride insulating layer 26 is coated on the circumferential surface of the second copper strip shielding layer 28, the first outer steel strip armor layer 27 is coated on the circumferential surface of the second polyvinyl chloride insulating layer 26, and the second cable composed of the second copper core 25, the second copper strip shielding layer 28, the second polyvinyl chloride insulating layer 26 and the first outer steel strip armor layer 27 has good performance, the cable has the advantages that the transmission efficiency is high, the resistance is low, the energy loss on the cable is low, and meanwhile, the cable also has good shielding effect, good insulating property and protection effect;
the first flame-retardant material 29 is filled in the third gap, and the first flame-retardant material 29 has good flame-retardant performance
The second conductor 3 is arranged among the four first conductors 2, the second conductor 3 is contacted with the four first conductors 2, the section of the second conductor 3 is circular, the second conductor 3 consists of a third copper core 31, a third copper strip shielding layer 32, a third polyvinyl chloride insulating layer 33 and a second outer steel strip armor layer 34 which are sequentially arranged from inside to outside, the third copper core 31 is coated on the circumferential surface of the third copper core 31, the third polyvinyl chloride insulating layer 33 is coated on the circumferential surface of the third copper strip shielding layer 32, the second outer steel strip armor layer 34 is coated on the circumferential surface of the third polyvinyl chloride insulating layer 33, the section of the second conductor 3 is circular, the second conductor 3 consisting of the third copper core 31, the third copper strip shielding layer 32, the third polyvinyl chloride insulating layer 33 and the second outer steel strip armor layer 34 has good performance, high transmission efficiency, low resistance and low energy loss on the cable, the cross sections of the first conductor 2 and the second conductor 3 are respectively in an oval design and a circular design, so that the cable is suitable for a wider alternating-current voltage circuit and meets different current-carrying capacities, the insulation reliability of the cable is greatly improved, and the service life of the cable is prolonged;
the fiber ropes 4 are provided with multiple groups, the multiple groups of fiber ropes 4 are transversely arranged at equal intervals, each group of fiber ropes 4 is provided with four, each fiber rope 4 is connected between two adjacent first conductors 2, a first gap is formed between the inner sides of the multiple groups of fiber ropes 4 and the first polyvinyl chloride protective outer sleeve layer 1, a second gap is formed between the inner sides of the multiple groups of fiber ropes 4 and the second conductors 3, the tensile strength of the cable is ensured by the arrangement of the multiple groups of fiber ropes 4, adhesives are bonded at two end parts of each fiber rope 4, and the connection between the fiber ropes 4 and the first conductors 2 is conveniently realized by the arrangement of the adhesives;
the second flame-retardant material 5 is filled in the first gap, and the second flame-retardant material 5 enables the cable to have good flame-retardant performance;
the fire-resistant material 6 is filled in the second gap, the fire-resistant material 6 enables the cable to have good fire-resistant performance, and it is required to explain that: the second flame retardant material 5 and the refractory material 6 of specific selection which kind of material should be selected according to actual need, and the second flame retardant material 5 and the refractory material 6 that are applicable to the cable simultaneously are the common general knowledge of technical personnel in the field, and therefore no longer describe any more here, the utility model discloses a rated voltage that the cable is suitable for is 450 and gives other charge of 750V, accords with the execution standard of Q/JD01 ~ 2017.
The above description is only the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the improvement concept of the present invention within the technical scope disclosed in the present invention.
Claims (6)
1. The utility model provides an insulating fire-resistant flexible cable of copper core polyvinyl chloride which characterized in that includes:
a first polyvinyl chloride protective outer sleeve layer (1) with a circular section;
the four first conductors (2) are arranged in the first polyvinyl chloride protective outer sleeve layer (1) in an annular array, the four first conductors (2) are all in contact with the inner wall of the first polyvinyl chloride protective outer sleeve layer (1), and the cross section of each first conductor (2) is oval;
the second conductor (3) is arranged between the four first conductors (2), the second conductor (3) is in contact with the four first conductors (2), and the cross section of the second conductor (3) is circular;
the cable comprises fiber ropes (4), wherein the fiber ropes (4) are provided with a plurality of groups, the fiber ropes (4) are transversely arranged at equal intervals, each group of fiber ropes (4) is provided with four fiber ropes, each fiber rope (4) is connected between two adjacent first conductors (2), a first gap is formed between the inner side of each group of fiber ropes (4) and the first polyvinyl chloride protective outer sleeve layer (1), and a second gap is formed between the inner side of each group of fiber ropes (4) and the second conductor (3);
a second flame retardant material (5) filled in the first gap;
and a refractory (6) filled in the second gap.
2. A copper-cored polyvinyl chloride insulated fire-resistant flexible electric cable according to claim 1, characterized in that said first conductor (2) comprises:
a second polyvinyl chloride protective outer jacket layer (21) with an oval cross section;
two first cables arranged in the second polyvinyl chloride protective outer sleeve layer (21) are respectively contacted with the left and right inner side walls of the second polyvinyl chloride protective outer sleeve layer (21), and the cross section of each first cable is circular;
the second cable is arranged between the two first cables and is in contact with the two first cables, the cross section of the second cable is oval, and third gaps are formed among the second cable, the two first cables and the second polyvinyl chloride protective outer sleeve layer (21);
and a first flame retardant material (29) filled in the third gap.
3. The copper-core polyvinyl chloride insulation fire-resistant flexible cable according to claim 2, wherein the first cable is composed of a first copper core (22), a first copper strip shielding layer (23) and a first polyvinyl chloride insulating layer (24) which are arranged from inside to outside in sequence, the first copper strip shielding layer (23) is coated on the circumferential surface of the first copper core (22), and the first polyvinyl chloride insulating layer (24) is coated on the circumferential surface of the first copper strip shielding layer (23).
4. The copper-core polyvinyl chloride insulated fire-resistant flexible cable according to claim 2, wherein the second cable is composed of a second copper core (25), a second copper strip shielding layer (28), a second polyvinyl chloride insulating layer (26) and a first outer steel tape armor layer (27) which are arranged from inside to outside in sequence, the second copper strip shielding layer (28) is coated on the circumferential surface of the second copper core (25), the second polyvinyl chloride insulating layer (26) is coated on the circumferential surface of the second copper strip shielding layer (28), and the first outer steel tape armor layer (27) is coated on the circumferential surface of the second polyvinyl chloride insulating layer (26).
5. The copper core polyvinyl chloride insulation fire-resistant flexible cable according to any one of claims 2 to 4, wherein the second conductor (3) is composed of a third copper core (31), a third copper strip shielding layer (32), a third polyvinyl chloride insulating layer (33) and a second outer steel strip armor layer (34) which are sequentially arranged from inside to outside, the third copper core (31) is coated on the circumferential surface of the third copper core (31), the third polyvinyl chloride insulating layer (33) is coated on the circumferential surface of the third copper strip shielding layer (32), the second outer steel strip armor layer (34) is coated on the circumferential surface of the third polyvinyl chloride insulating layer (33), and the cross section of the second conductor (3) is circular.
6. The copper-core polyvinyl chloride insulated fire-resistant flexible cable according to claim 1, wherein an adhesive is bonded to both ends of each of the fiber ropes (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020894270.2U CN212461172U (en) | 2020-05-25 | 2020-05-25 | Copper-core polyvinyl chloride insulating fire-resistant flexible cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020894270.2U CN212461172U (en) | 2020-05-25 | 2020-05-25 | Copper-core polyvinyl chloride insulating fire-resistant flexible cable |
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| Publication Number | Publication Date |
|---|---|
| CN212461172U true CN212461172U (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020894270.2U Active CN212461172U (en) | 2020-05-25 | 2020-05-25 | Copper-core polyvinyl chloride insulating fire-resistant flexible cable |
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| Country | Link |
|---|---|
| CN (1) | CN212461172U (en) |
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- 2020-05-25 CN CN202020894270.2U patent/CN212461172U/en active Active
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