CN106486199A - A kind of weak-current cable - Google Patents

Abstract

The present invention relates to a kind of weak-current cable, it includes conductor, it is provided with conductor shield outside described conductor, it is provided with inner insulating layer outside described conductor shield, it is provided with braiding layer outside described inner insulating layer, described conductor shield, inner insulating layer and braiding layer is three-layer co-extruded forms, described conductor, conductor shield, inner insulating layer and braiding layer composition core unit, described core unit is at least provided with two, it is provided with packed layer outside described core unit, it is provided with lapping layer outside described packed layer, it is provided with inner liner outside described lapping layer, in described inner liner external metallization screen layer, it is provided with external insulation layer outside described metal screen layer, it is provided with restrictive coating outside described external insulation layer.Tensile strength of the present invention is high, and winding performance is good, can avoid magnetic field and radio signal interference.

Description

a weak current cable

technical field

The invention relates to a cable, in particular to a weak current cable.

Background technique

Weak electricity is relative to electric power and lighting electricity. Generally speaking, the electric energy for transmitting signals and exchanging information is called weak electricity. The processing object of weak current is mainly information, that is, the transmission and control of information, which is characterized by low voltage, low current, low power and high frequency.

Existing power cables usually use multi-core conductors. Such multi-core conductors generally have problems such as many consumables and poor winding performance. In addition, in real life application environments, there are often many different wires and cables working at the same time. At the same time, there are A lot of electrical equipment is in operation, and these electrical equipment and wires and cables will inevitably cause radiation during the working process, which will affect the signal transmission of weak current cables.

Contents of the invention

Purpose of the invention: The purpose of the invention is to overcome the deficiencies in the prior art and provide a weak current cable with high tensile strength, good winding performance, and avoiding magnetic field and radio signal interference.

Technical solution: In order to solve the above technical problems, a weak current cable according to the present invention includes a conductor, a conductor shielding layer is provided outside the conductor, an inner insulating layer is provided outside the conductor shielding layer, and an inner insulating layer is provided outside the conductor shielding layer. A braiding layer is provided outside the inner insulating layer, and the conductor shielding layer, the inner insulating layer and the braiding layer are co-extruded in three layers, and the thickness ratio of the conductor shielding layer, the inner insulating layer and the braiding layer is 2:3:1, The braiding layer is made of thin copper wires and aramid fiber wires vertically braided in a stack of 2, the conductor, the conductor shielding layer, the inner insulating layer and the braiding layer form a core unit, and the core unit is provided with at least two A filling layer is arranged outside the core unit, a wrapping layer is arranged outside the filling layer, an inner lining layer is arranged outside the wrapping layer, and a metal shielding layer is arranged outside the inner lining layer, An outer insulating layer is arranged outside the metal shielding layer, and a sheath layer is arranged outside the outer insulating layer.

There are two core units in total, they are arranged in parallel, and the wrapping layer, inner lining layer, metal shielding layer, outer insulating layer and sheath layer are wrapped in turn outside the two core units, and they form an overall cross section of Oval structure.

The filling layer is a EPDM filling layer.

Both the inner insulating layer and the outer insulating layer are cross-linked polyethylene insulating layers.

Beneficial effects: Compared with the prior art, the present invention has the remarkable advantages that: the overall structure of the present invention is reasonably arranged, and the weaving layer is made of thin copper wires and aramid fiber wires vertically braided in 1 stack and 2, effectively improving the wire core The tensile strength of the unit adopts conductor shielding layer, metal shielding layer, inner insulating layer and outer insulating layer, which can effectively improve the overall safety and practicability. Well, the three-layer co-extrusion layer composed of the conductor shielding layer, the inner insulating layer and the braiding layer with a thickness ratio of 2:3:1 is used, and the winding performance is good. This product operates smoothly and reliably through the cooperation of each layer, and the overall service life is long. , in line with the actual use requirements.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in Figure 1, a kind of weak electric cable of the present invention, it comprises conductor 1, is provided with conductor shielding layer 2 outside described conductor 1, is provided with inner insulating layer 3 outside described conductor shielding layer 2, in A braiding layer 4 is provided on the outside of the inner insulating layer 3, and the conductor shielding layer 2, the inner insulating layer 3 and the braiding layer 4 are co-extruded in three layers, and the conductor shielding layer 2, the inner insulating layer 3 and the braiding layer 4 The thickness ratio is 2:3:1, the braiding layer 4 is vertically braided by thin copper wire and aramid fiber wire according to 1 stack of 2, the conductor 1, the conductor shielding layer 2, the inner insulating layer 3 and the braiding layer 4 to form a core unit, at least two core units are provided, a filling layer 5 is arranged outside the core unit, a wrapping layer 6 is arranged outside the filling layer 5, and a wrapping layer 6 is arranged outside the wrapping layer 6 is provided with an inner liner 7 outside, a metal shielding layer 8 is arranged outside the inner liner 7, an outer insulating layer 9 is arranged outside the metal shielding layer 8, and a sheath layer is arranged outside the outer insulating layer 9 10. There are two core units in total, and they are arranged in parallel, and wrap the wrapping layer 6, the inner lining layer 7, the metal shielding layer 8, the outer insulating layer 9 and the sheath layer in sequence outside the two core units 10. They form a structure with an overall elliptical cross-section; the filling layer 5 is a EPDM filling layer; the inner insulating layer 3 and the outer insulating layer 9 are both cross-linked polyethylene insulating layers. The overall structure of the present invention is reasonably arranged, and the braiding layer is vertically braided by thin copper wire and aramid fiber wire according to one stack of two, which can effectively improve the tensile strength of the core unit, and the conductor shielding layer, the metal shielding layer, and the inner The insulating layer and the outer insulating layer can effectively improve the overall safety and practicability, and have strong anti-interference ability. The polyurethane filling layer is used for light filling and good filling effect. The conductor shielding layer with a thickness ratio of 2:3:1 is used, and the inner The three-layer co-extrusion layer composed of insulating layer and braiding layer has good winding performance. Through the cooperation of various layers, this product runs smoothly and reliably, and has a long service life as a whole, which meets the actual use requirements.

The present invention provides a kind of train of thought and method, and there are many methods and approaches for realizing the technical solution, and the above description is only a preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without Under the premise of the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the present invention, and each component that is not specified in this embodiment can be realized by existing technologies.

Claims (4)

1. A weak current cable, characterized in that: it comprises a conductor (1), a conductor shielding layer (2) is provided outside the conductor (1), and an inner insulating layer is provided outside the conductor shielding layer (2) (3), a braiding layer (4) is provided outside the inner insulating layer (3), and the conductor shielding layer (2), the inner insulating layer (3) and the braiding layer (4) are co-extruded in three layers, The thickness ratio of the conductor shielding layer (2), the inner insulating layer (3) and the braiding layer (4) is 2:3:1, and the braiding layer (4) is made of thin copper wire and aramid fiber wire according to a stack 2. It is formed by weaving vertically. The conductor (1), conductor shielding layer (2), inner insulating layer (3) and braiding layer (4) form a core unit. There are at least two core units. A filling layer (5) is arranged outside the core unit, a wrapping layer (6) is arranged outside the filling layer (5), and an inner lining layer (7) is arranged outside the wrapping layer (6), On the outer metal shielding layer (8) of the inner liner (7), an outer insulating layer (9) is arranged outside the metal shielding layer (8), and a sheath is arranged outside the outer insulating layer (9) layer (10). 2. The weak current cable according to claim 1, characterized in that: there are two core units in total, they are arranged in parallel, and the wrapping layer (6) and inner lining are sequentially wrapped outside the two core units. layer (7), metal shielding layer (8), outer insulating layer (9) and sheath layer (10), which form a structure whose overall cross-section is elliptical. 3. The weak current cable according to claim 1, characterized in that: the filling layer (5) is a filling layer of EPDM rubber. 4. The weak current cable according to claim 1, characterized in that: both the inner insulating layer (3) and the outer insulating layer (9) are cross-linked polyethylene insulating layers.