Shielding anti-interference B1-level control cable

Abstract

The utility model discloses a shielding anti-interference B1-level control cable, which comprises a core wire, an insulating layer and a sheath, the insulating layer is extruded outside the core wire, the sheath is wrapped outside the insulating layer, and an isolating layer is arranged between the insulating layer and the sheath to isolate heat inside and outside the cable. According to the shielding anti-interference B1-level control cable, the copper-aluminum foil is composed of the copper wire and the aluminum foil layer, the copper wire and the aluminum foil layer have a double-layer shielding function, so that the anti-interference performance of the cable is more remarkable, the isolation layer wraps the outer side of the flame-retardant coating, the flame-retardant coating and the steel tape armoring are separated in a vacuum mode, and the shielding anti-interference B1-level control cable is more stable. Heat on the outer side of the cable can be prevented from being conducted into the cable, and therefore the phenomenon that the cable is overloaded due to too high heat in the cable can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field, concretely is a shielding anti -interference B1 level control cable. BACKGROUND

[0002] Control cable is mainly used for transmitting control signal, such as on-off signal and analog signal, and is used for connecting the control system of electrical equipment, and its main function is to transmit the control signal of electrical equipment to actuator, so as to realize the control of electrical equipment, and control cable is usually composed of core wire, insulating layer, shielding layer and sheath.

[0003] Such as the anti -interference control cable of CN220773993U, the outer sheath is fixedly installed in the middle part of cable body 1, the copper wire shielding layer is fixedly installed in the middle part of outer sheath, the copper foil layer is fixedly installed in the middle part of copper wire shielding layer, and the fire -retardant filler is movably installed in the middle part of copper foil layer.

[0004] The above cable layer and layer are directly contacted, when the cable outside contacts the object of too high temperature, the outside temperature is transmitted to the cable inside through the contacted layer, and the cable inside temperature is too high to easily make the cable overload become large, easily make the cable overload short circuit, reduce the bearing capacity of cable. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a shielding anti -interference B1 level control cable to solve the problem that the cable overload becomes large in the prior art, which is caused by the transmission of the outside temperature of the control cable in the market to the cable inside through the contacted layer.

[0006] To achieve the above object, the utility model provides the following technical scheme: a shielding anti -interference B1 level control cable, which comprises a core wire, an insulating layer and a sheath, the insulating layer is extruded on the outside of the core wire, the sheath is wrapped on the outside of the insulating layer, and an isolation layer is arranged between the insulating layer and the sheath to isolate the heat inside and outside the cable.

[0007] Preferably, the insulating layer is extruded with a shielding layer on the outside, the shielding layer is wrapped with a fire -retardant coating on the outside, and the fire -retardant coating is wrapped with an isolation layer on the outside.

[0008] Preferably, the isolation layer is wrapped with a steel tape armor on the outside, the steel tape armor is extruded with a sheath on the outside, and the sheath is extruded with a wear -resistant layer on the outside.

[0009] Preferably, the isolation layer is of insulating material, the isolation layer is of hollow structure inside, and the isolation layer side is provided with an air inlet.

[0010] Preferably, the isolation layer is of spiral structure.

[0011] Preferably, the core wire adopts a plurality of twisted copper wires or aluminum wires, the insulation layer and the sheath adopt a flame-retardant B1-level low-smoke halogen-free polyolefin material, and the shielding layer adopts a copper-aluminum foil material.

[0012] Preferably, the hollow position inside the isolation layer is filled with inert gas.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1. The utility model discloses isolation layer and shielding layer are set up, the shielding layer is copper-aluminum foil material, and the copper-aluminum foil is composed of copper wire and aluminum foil layer, has double -deck shielding function through copper wire and aluminum foil layer, so that the anti -interference performance of this cable is more remarkable.

[0015] 2. The utility model discloses isolation layer and air inlet are set up, and the inert gas is filled to the isolation layer inside through the air inlet, and the isolation layer is wrapped on the outside of the flame-retardant coating, and the flame-retardant coating is vacuumed apart between the flame-retardant coating and the steel tape armor, can reduce the heat conduction of the outside of the cable to the inside of the cable, thereby can reduce the cable inside heat too high and make the cable exceed overload. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overhead structure schematic diagram of the utility model;

[0017] Figure 2 It is the isolation layer main view structure schematic diagram of the utility model;

[0018] Figure 3 It is the core wire downward structure schematic diagram of the utility model;

[0019] Figure 4 It is the isolation layer sectional view schematic diagram of the utility model.

[0020] In the drawing: 1, core wire;2, insulation layer;3, shielding layer;4, flame-retardant coating;5, isolation layer;6, steel tape armor;7, sheath;8, wear layer;9, air inlet. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0022] Please refer to Figures 1-4 The utility model provides the following technical scheme:

[0023] The application discloses a shielded anti-interference B1-level control cable, which comprises a core wire 1, an insulating layer 2 and a sheath 7, the insulating layer 2 is extruded on the outer side of the core wire 1, the sheath 7 is wrapped on the outer side of the insulating layer 2, and an isolation layer 5 is arranged between the insulating layer 2 and the sheath 7 to isolate the heat inside and outside the cable, the isolation layer 5 is made of insulating material, the inside of the isolation layer 5 is a hollow structure, air inlets 9 are arranged on the side edges of the isolation layer 5, the isolation layer 5 is a spiral structure, and the inside of the hollow structure of the isolation layer 5 is filled with inert gas.

[0024] The flame-retardant coating 4 is separated from the steel tape armor 6 by filling the inert gas, the temperature outside the cable is separated from the outside by the inert gas, the inert gas has a barrier function, and the inert gas is filled into the inside of the isolation layer 5 through the air inlets 9.

[0025] The outer side of the insulating layer 2 is extruded with a shielding layer 3, the outer side of the shielding layer 3 is wrapped with the flame-retardant coating 4, the outer side of the flame-retardant coating 4 is wrapped with the isolation layer 5, the shielding layer 3 is made of copper-aluminum foil material, and the copper-aluminum foil is composed of a copper wire and an aluminum foil layer.

[0026] The copper-aluminum foil material has a double-layer shielding function through the copper wire and the aluminum foil layer, so that the anti-interference performance of the cable is more remarkable, and the interference of an external electromagnetic field on the cable can be reduced.

[0027] The outer side of the isolation layer 5 is wrapped with the steel tape armor 6, the outer side of the steel tape armor 6 is extruded with the sheath 7, and the outer side of the sheath 7 is extruded with a wear-resistant layer 8.

[0028] The steel tape armor 6 enhances the mechanical strength of the cable, improves the anti-erosion capability, resists low-frequency interference and provides additional protection, meanwhile, the steel tape armor 6 protects the isolation layer 5, so that the heat in the subsequent extrusion process can be reduced, the damage of the isolation layer 5 is reduced, the cable is protected through the wear-resistant layer 8, and the service life of the cable is prolonged.

[0029] The core wire 1 is made of a plurality of twisted copper wires or aluminum wires, the insulating layer 2 and the sheath 7 are made of flame-retardant B1-level low-smoke halogen-free polyolefin material, and the flame-retardant grade of the control cable is improved.

[0030] The cable processing process is as follows: firstly, the materials required by the cable are prepared, a copper rod or an aluminum rod is stretched into a core wire 1 with a required diameter through a wire drawing machine, the single core wire 1 after drawing is twisted into a plurality of strands to increase softness and conductivity, the twisted core wire 1 is uniformly coated with an insulating layer 2 through an insulating extruder, the shielding layer 3 is covered on the outer side of the insulating layer 2 through the processing of an extruder, the isolation layer 5 is made, the inert gas is filled into the inside of the isolation layer 5 through the air inlets 9, the flame-retardant coating 4, the isolation layer 5 and the steel tape armor 6 are sequentially wrapped in a wrapping mode, then the sheath 7 and the wear-resistant layer 8 are sequentially coated on the outer side through an extruder to protect the cable from the influence of the external environment, finally, vulcanization treatment is carried out in a vulcanization tank to improve the heat resistance, cold resistance and oil resistance of the cable, and the cable is completed.

[0031] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A shielded interference-resistant B1 control cable comprising a core wire (1), an insulation layer (2) and a sheath (7), the insulation layer (2) being extruded onto the outside of the core wire (1), the sheath (7) being wrapped around the outside of the insulation layer (2), characterized in that An isolation layer (5) is arranged between the insulation layer (2) and the sheath (7) to isolate the heat inside and outside the cable.

2. A shielded B1 control cable according to claim 1, characterized in that: The insulation layer (2) is extruded with a shielding layer (3) on the outside, and the shielding layer (3) is wrapped with a flame-retardant coating (4) on the outside, and the flame-retardant coating (4) is wrapped with an isolation layer (5) on the outside.

3. A shielded B1 control cable according to claim 2, characterized in that: The isolation layer (5) is wrapped with a steel tape armor (6) on the outside, and the steel tape armor (6) is extruded with a sheath (7) on the outside, and the sheath (7) is extruded with a wear-resistant layer (8) on the outside.

4. The shielded B1 control cable of claim 1, wherein: The isolation layer (5) is made of insulating material, and the isolation layer (5) has a hollow structure inside, and the isolation layer (5) is provided with an air inlet (9) on the side.

5. A shielded, tamper-resistant B1 control cable according to claim 4, characterized in that: The isolation layer (5) has a spiral structure.

6. The shielded B1 control cable of claim 1, wherein: The core wire (1) is made of a plurality of twisted copper wires or aluminum wires, the insulation layer (2) and the sheath (7) are made of flame-retardant B1-level low-smoke halogen-free polyolefin material, and the shielding layer (3) is made of copper-aluminum foil material.

7. The shielded B1 control cable of claim 1, wherein: The hollow position inside the isolation layer (5) is filled with inert gas.

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