Fireproof insulation type industrial control cable

Abstract

The utility model discloses a fireproof insulation type industrial control cable, which relates to the technical field of cables and comprises a cable core and a cable sleeve, the cable sleeve comprises a first flame-retardant layer, an insulation layer, a second flame-retardant layer, a shielding layer and a protection layer which are sequentially arranged from inside to outside, the first flame-retardant layer is a flame-retardant fiber braid layer, the second flame-retardant layer is a flame-retardant nylon sleeve, and the shielding layer is a flame-retardant nylon sleeve. Marking lines are arranged on the outer surface of the protective layer, the cable sleeve is further provided with a support, and the cable core is arranged on the support. The first flame-retardant layer and the second flame-retardant layer are arranged at an interval, so that a good fireproof and flame-retardant effect is provided for the cable; when a plurality of cable cores need to be arranged, the cable cores are separated through the arc-shaped aluminum sheets on the support, contact among the cable cores is reduced, the heat dissipation effect is improved, convenience is provided for penetration of the cable cores due to the arrangement of the support, and the insulating layer, the shielding layer and the protection layer respectively provide insulation, electromagnetic shielding and protection effects for the cable. The marking lines on the protection layer facilitate the identification of the length of the cable, and facilitate the segmentation of the cable.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field more specifically, it relates to fireproof insulation type industrial control cable. BACKGROUND

[0002] Cable is a kind of wire product that can transmit electric energy, magnetic energy and realize electromagnetic energy conversion, cable industry develops rapidly in China, and has become the second largest industry next to automobile industry;The specification of cable is various, and its function also has diversity, such as power transmission, communication cable and the like.

[0003] The existing industrial control cable generally needs cable to bear information transmission, and the use safety and stability are important indexes of industrial control cable, but the fireproof measure for the existing industrial control cable still has certain defects, such as the public (announcement) No. CN218214743U discloses a kind of fireproof composite industrial cable, including at least one core, the outer wall of core is provided with internal fireproof layer, the outer wall of internal fireproof layer is fixedly connected with high-temperature resistant protective layer, the outer wall of high-temperature resistant protective layer is provided with high-temperature resistant coating, the outer wall of high-temperature resistant coating is provided with filling layer, the outer wall of filling layer is provided with external fireproof layer, the outer wall of external fireproof layer is provided with fireproof coating, by the six layers of structure from inside to outside, the core is protected from fire, flame-retardant, high-temperature resistant;The technical scheme of the above-mentioned disclosure is complex, and the protection of cable is reduced by realizing fire-retardant through various coatings, such as electromagnetic shielding, insulation effect and the strength of cable, which is not conducive to the use safety of cable. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide fireproof insulation type industrial control cable, which improves the fire-retardant effect of cable by setting two fire-retardant layers, and improves the use safety of cable by the high structural strength of fire-retardant layer.

[0005] The above technical purpose of the utility model is realized by the following technical scheme: fireproof insulation type industrial control cable, including at least one cable core and cable sleeve set on the cable core, the cable sleeve includes first fire-retardant layer, insulation layer, second fire-retardant layer, shielding layer and protective layer arranged in sequence from inside to outside, the first fire-retardant layer is a fire-retardant fiber woven layer, the first fire-retardant layer is set on the outside of the cable core, the second fire-retardant layer is a fire-retardant nylon sleeve, the second fire-retardant layer is set on the outer surface of the insulation layer, a mark line is set every 1-3m on the outer surface of the protective layer, the mark line is one of paint layer, paint layer and color film layer, the width of the mark line is not more than 3mm, the cable sleeve is also provided with a bracket, and the cable core is placed on the bracket.

[0006] The present invention is further configured such that: the support includes a crossbeam and a plurality of arc-shaped pieces arranged around the crossbeam, each of the arc-shaped pieces having an inner concave portion forming an arc-shaped groove, at least a portion of the cable core being placed in the arc-shaped groove, the diameter of the arc-shaped groove being approximately equal to the diameter of the cable core, the arc-shaped pieces being made of aluminum sheet, the arc-shaped grooves of the arc-shaped pieces facing away from the crossbeam, the arc-shaped pieces being welded and fixed to the crossbeam, the crossbeam being tubular, and the crossbeam being a plastic tube.

[0007] The present invention is further configured such that: there are four arc-shaped pieces, each arc-shaped piece carries a cable core, the first flame-retardant layer covers the outside of the bracket and fixes the cable core in the arc-shaped groove, and the insulating layer is sleeved on the outer surface of the first flame-retardant layer.

[0008] The present invention is further configured such that: the shielding layer is woven from tin-plated copper wire, the outer surface of the second flame-retardant layer is coated with a heat-resistant adhesive layer, and the shielding layer is wrapped around the second flame-retardant layer and adhered to the heat-resistant adhesive layer.

[0009] The present invention is further configured such that: the protective layer is sleeved on the outer surface of the shielding layer, the protective layer is made of cross-linked polyethylene material, the thickness of the protective layer is greater than the thickness of the insulating layer, and a bushing layer is provided between the protective layer and the shielding layer, the bushing layer being a wear-resistant fiber braided layer.

[0010] The present invention is further configured such that: a plurality of annular grooves are spaced apart on the outer surface of the protective layer, the depth of the annular grooves is 0.5-1mm, the distance between two adjacent annular grooves is 0.5-1m, and the width of each annular groove is 0.8-1.5cm.

[0011] In summary, this utility model has the following beneficial effects: the first and second flame-retardant layers, which are spaced apart, provide good fire-retardant effect for the cable. At the same time, the first flame-retardant layer is set as a flame-retardant fiber braided layer to provide fixation and heat dissipation for the cable core, and the second flame-retardant layer is set as a flame-retardant nylon sheath to increase the fire resistance and strength of the cable. When multiple cable cores need to be set, the aluminum thin arc-shaped pieces on the bracket separate the cable cores, reducing the contact between the cable cores and improving the heat dissipation effect. In addition, the bracket setting facilitates the installation of the cable cores. The insulation layer, shielding layer and protective layer provide insulation, electromagnetic shielding and protection for the cable, respectively. The marking lines on the protective layer make it easy to identify the length of the cable and facilitate the segmentation of the cable. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the assembly structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the support structure of this utility model.

[0014] In the diagram: 1. Cable core; 2. First flame-retardant layer; 3. Insulation layer; 4. Second flame-retardant layer; 5. Shielding layer; 6. Protective layer; 61. Marking line; 62. Annular groove; 7. Support; 71. Crossbeam; 72. Arc-shaped piece; 73. Arc-shaped groove. Detailed Implementation

[0015] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0016] like Figure 1 , Figure 2 As shown, this utility model discloses a fire-resistant and insulated industrial control cable. The cable includes a cable core 1 and a cable sheath. The cable sheath is fitted onto the cable core 1 to provide protection for it. The cable sheath includes, from the inside out, a first flame-retardant layer 2, an insulation layer 3, a second flame-retardant layer 4, a shielding layer 5, and a protective layer 6. It also includes a support 7, which includes a crossbeam 71 and an arc-shaped piece 72 surrounding the crossbeam 71. The arc-shaped piece 72 is made of thin aluminum sheet and has good thermal conductivity and heat dissipation. The concave part of the arc-shaped piece 72 forms an arc-shaped groove 73. In use, the cable core 1 is placed in the arc-shaped groove 73, and the other parts of the cable sheath are sequentially wrapped around the cable core 1. On the outside, the first flame-retardant layer 2 is a flame-retardant fiber braided layer. Flame-retardant fiber is a high-tech fiber material with flame-retardant and anti-dripping properties. This product uses sol-gel technology to make inorganic polymer flame retardants exist in the organic macromolecules of viscose fibers in a nano-state or an interpenetrating network state. The flame-retardant fiber and textiles have the effects of flame retardancy, heat insulation and anti-dripping. The first flame-retardant layer 2 made of flame-retardant fiber braided layer provides the first layer of protection for the fire prevention and flame retardancy of the cable, and the fiber braiding is conducive to heat dissipation. The insulation layer 3 is an insulation material layer, which is a conventional technical material in the cable field. The insulation layer 3 is wrapped around the outer surface of the first flame-retardant layer 2.

[0017] like Figure 1 As shown, the second flame-retardant layer 4 is a flame-retardant nylon sleeve. Flame-retardant nylon is made by adding halogen-free flame retardants to modified nylon. The flame-retardant nylon is made into a tube, which is the flame-retardant nylon sleeve. The second flame-retardant layer 4 is sleeved on the outer surface of the insulation layer 3. The second flame-retardant layer 4 has a certain strength. Based on this, the second flame-retardant layer 4 not only provides fire-retardant effect for the cable, but also improves the structural strength of the cable, which is beneficial to the cable laying. The shielding layer 5 is made of tin-plated copper wire braid. When using it, first coat the outer surface of the second flame-retardant layer 4 with a heat-resistant adhesive layer, and then wrap the shielding layer 5 on the second flame-retardant layer 4 to play a fixed connection role. The shielding layer 5 is a conventional cable setting and is used to provide electromagnetic shielding effect for the cable.

[0018] like Figure 1As shown, the protective layer 6, as the outermost layer of the cable, serves to protect the cable. The protective layer 6 is made of cross-linked polyethylene, which has good weather resistance, heat resistance, and insulation properties. Inside the protective layer 6 is a bushing layer, which is a wear-resistant fiber braided layer providing wear resistance and protection. In use, the bushing layer is first wrapped around the outer surface of the shielding layer 5, and then the protective layer 6 is fitted onto the outer surface of the bushing layer. The outer surface of the protective layer 6 also has several marking lines 61 and annular grooves 62 spaced apart. The marking lines 61 are made with a bright colored paint layer and are placed every 1m on the cable, with a width not exceeding 3mm to reduce errors. The marking lines 61 are used to easily determine the cable length and facilitate cable segmentation. Annular grooves 62 are placed every 0.5m on the cable, with a depth not exceeding 1mm and a width of 1cm. The annular grooves 62 are used to position cable fasteners, allowing the annular plates used for fixing the cable to fit into the annular grooves 62, which helps to smooth the cable surface and reduce friction damage.

[0019] The assembly principle of this utility model is as follows: Figure 1 , Figure 2 As shown, the arc-shaped pieces 72 made of thin aluminum sheets are fixed to the crossbeam 71 by ultrasonic welding. The arc-shaped pieces 72 are arranged in pairs on the four sides of the crossbeam 71. At least part of the cable core 1 is embedded in the arc-shaped groove 73, and the diameter of the arc-shaped groove 73 is equivalent to the diameter of the cable core 1. The elasticity of the thin aluminum sheet provides a certain clamping force for the embedded cable core 1 to facilitate the fixation of the cable core 1. After the cable core 1 is fixed, the first flame-retardant layer 2 is wrapped on the bracket 7, so that the first flame-retardant layer 2 completely wraps the cable core 1. Then, the insulation layer 3, the second flame-retardant layer 4, the shielding layer 5 and the protective layer 6 are wrapped one by one to complete the cable assembly. The cable assembly is carried out with the help of the existing cable forming machine and other cable production equipment.

[0020] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A fire-resistant insulated industrial control cable, characterized in that: The cable includes at least one cable core (1) and a cable sleeve fitted on the cable core (1). The cable sleeve includes a first flame-retardant layer (2), an insulation layer (3), a second flame-retardant layer (4), a shielding layer (5), and a protective layer (6) arranged sequentially from the inside to the outside. The first flame-retardant layer (2) is a flame-retardant fiber braided layer and is fitted on the outside of the cable core (1). The second flame-retardant layer (4) is a flame-retardant nylon sleeve and is fitted on the outer surface of the insulation layer (3). The outer surface of the protective layer (6) is provided with marking lines (61). The marking lines (61) are arranged at intervals of 1-3m. The marking lines (61) are one of the coating layer, paint layer, and colored film layer. The width of the marking lines (61) is not greater than 3mm. The cable sleeve is also provided with a bracket (7), and the cable core (1) is placed on the bracket (7).

2. The fire-resistant insulated industrial control cable according to claim 1, characterized in that: The bracket (7) includes a crossbeam (71) and a plurality of arc-shaped pieces (72) arranged around the crossbeam (71). The concave portion of each arc-shaped piece (72) forms an arc-shaped groove (73). At least a portion of the cable core (1) is placed in the arc-shaped groove (73). The diameter of the arc-shaped groove (73) is equivalent to the diameter of the cable core (1). The arc-shaped piece (72) is made of aluminum sheet. The arc-shaped groove (73) of the arc-shaped piece (72) faces away from the crossbeam (71). The arc-shaped piece (72) is welded and fixed to the crossbeam (71). The crossbeam (71) is tubular and is made of plastic tube.

3. The fire-resistant insulated industrial control cable according to claim 2, characterized in that: The arc-shaped piece (72) is provided in four parts, and each arc-shaped piece (72) carries a cable core (1). The first flame-retardant layer (2) covers the outside of the bracket (7) and fixes the cable core (1) in the arc-shaped groove (73). The insulation layer (3) is sleeved on the outer surface of the first flame-retardant layer (2).

4. The fire-resistant insulated industrial control cable according to claim 3, characterized in that: The shielding layer (5) is woven from tin-plated copper wire, and the outer surface of the second flame-retardant layer (4) is coated with a heat-resistant adhesive layer. The shielding layer (5) is wrapped around the second flame-retardant layer (4) and adhered to the heat-resistant adhesive layer.

5. The fire-resistant insulated industrial control cable according to claim 4, characterized in that: The protective layer (6) is sleeved on the outer surface of the shielding layer (5). The protective layer (6) is made of cross-linked polyethylene. The thickness of the protective layer (6) is greater than the thickness of the insulating layer (3). A bushing layer is also provided between the protective layer (6) and the shielding layer (5). The bushing layer is a wear-resistant fiber braided layer.

6. The fire-resistant insulated industrial control cable according to claim 5, characterized in that: The outer surface of the protective layer (6) is also provided with a plurality of annular grooves (62) spaced apart. The depth of the annular grooves (62) is 0.5-1mm, the distance between two adjacent annular grooves (62) is 0.5-1m, and the width of each annular groove (62) is 0.8-1.5cm.

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