Cable with good ageing resistance
Technical Field
The utility model relates to the technical field of cables, in particular to a cable with good ageing resistance.
Background
The cable is made of one or more mutually insulated conductors and an outer insulating protective layer, the cable is a collective name of articles such as an optical cable and a cable, the cable has a plurality of purposes and is mainly used for controlling multiple functions such as installation, connecting equipment and power transmission, and the like, power or information is transmitted from one place to another place, the cable is divided into a power cable, a control cable and the like, the elevator cable is an indispensible article in daily life, the existing cable is general in ageing resistance, and the service life is not long enough.
Based on the technical problem, chinese patent publication No. CN213988365U discloses a cable with good ageing resistance, which comprises a wire, the outer end surface of the wire is all glued and fixed with the inner protection layer, the outer end surface of the inner protection layer is all glued and fixed with the filling layer, the outer end surface of the filling layer is glued and fixed with the insulating layer, the outer end surface of the insulating layer is glued and fixed with the shielding layer, the outer end surface of the shielding layer is glued and fixed with the outer protection layer, the sun-proof layer is made of polyvinyl chloride, the shielding layer is made of metal wire braiding, the shielding layer is made of polyvinyl chloride material, the insulating layer is made of rubber, the filling layer is made of glass fiber material, the wire is fixed through adopting the wire, the guidance of current is facilitated, the inner protection layer is adopted for protection, the secondary protection is facilitated to the wire, the filling layer is adopted for fixation, the wire is conveniently fixed, and the cable has the advantages of good ageing resistance, good sun-proof performance and multi-layer protection.
However, in the technical solution disclosed in the above patent, the protection degree of the cable is not enough, the fireproof and corrosion resistance of the cable are not enough, and in the practical application process of the cable, the cable is easy to corrode in a humid environment, and the poor fireproof performance in fire disaster is a problem to be solved.
Disclosure of utility model
In order to overcome the technical defects in the prior art, the utility model provides the cable with good ageing resistance, and the cable has the effects of strong sun-proof performance, good corrosion resistance and strong ageing resistance.
The cable comprises a conductor layer, an insulating layer and a shielding layer, wherein the insulating layer and the shielding layer are sequentially coated on the conductor layer from inside to outside, the conductor layer is used as a basic cable core structure and is made of high-conductivity materials such as copper or aluminum, the cable has certain flexibility and bending resistance, the insulating layer and the shielding layer are sequentially arranged outside the conductor layer, the insulating layer is coated outside the conductor layer, the conductor layer is effectively isolated, current leakage is prevented, normal electric energy transmission is ensured, the shielding layer is used for limiting electric field and electromagnetic interference, the signal influence of an external magnetic field on the conductor layer is effectively reduced, stable signal transmission is ensured, the shielding layer is further coated with a fireproof corrosion-resistant composite layer, the fireproof corrosion-resistant composite layer is coated with a sun-proof layer, the sun-proof layer is positioned at the outermost side, the exposed part of the cable is preliminarily protected, the cable is prevented from bearing sunlight fast aging for a long time, the fireproof corrosion-resistant composite layer is positioned inside the sun-proof layer, the second protection is achieved, the cable is used for blocking high temperature, the fireproof performance is played, a large amount of harmful gas is not generated even if the fire disaster is continuously suffered, the cable is prevented from being burnt, the phenomenon is prevented from being further, and the cable has certain anti-aging performance is further improved, and the cable has the anti-aging performance is further.
Preferably, an inner protection layer is arranged between the fireproof corrosion-resistant composite layer and the shielding layer, and the inner protection layer is made of polyurethane.
Preferably, an outer protective layer is arranged between the fireproof and corrosion-resistant composite layer and the sun-proof layer, and the outer protective layer is made of polyethylene, has good wear resistance and moisture resistance, is relatively environment-friendly and is convenient to use.
Preferably, the fireproof corrosion-resistant composite layer comprises an anti-slip layer, a corrosion-resistant layer and a heat insulation layer, and the anti-slip layer, the corrosion-resistant layer and the heat insulation layer are sequentially arranged from inside to outside.
Preferably, the material of anti-skidding layer is silica gel, the material of corrosion-resistant layer is low smoke and zero halogen flame retardant material, not only has good fire resistance, but also can resist chemical corrosion, produces low smoke and low toxicity gas under the high temperature condition of meeting fire, improves the security, the material of insulating layer is graphene, has advantages such as high thermal conductivity, good chemical stability, mechanical strength are big, can reduce the cable temperature effectively, improve the security performance of cable.
Preferably, the insulating layer is made of polyvinyl chloride, has high breakdown strength, low dielectric loss, good resin discharge resistance, corona resistance and partial discharge resistance, and has a good insulating effect.
Preferably, the shielding layer is made of tinned copper wire mesh, has high longitudinal tensile resistance, flexible cable and oxidation resistance superior to that of the traditional copper wire shielding.
Preferably, the sun-proof layer is made of fluoroplastic, and has excellent weather resistance and chemical corrosion resistance, so that the sun-proof layer can be used in a severe outdoor environment for a long time.
The cable has the beneficial effects that the fireproof corrosion-resistant composite layer and the sun-proof layer are arranged outside the shielding layer to perform higher-strength protection, the sun-proof layer is positioned at the outermost side to perform primary protection on the exposed part, the cable is prevented from being subjected to sunlight rapid aging for a long time, the fireproof corrosion-resistant composite layer is positioned inside the sun-proof layer to perform secondary protection, the cable is used for blocking high temperature, the fireproof performance is higher, the safety is higher, the cable also has certain corrosion resistance, the corrosion phenomenon of the cable when the cable is wetted is prevented, the ageing resistance of the cable is further improved, the sun-proof performance is strong, the corrosion resistance is good, the ageing resistance is strong, and the practical value is higher.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a cross-sectional view of the present utility model.
Fig. 3 is a cross-sectional view of a fire-resistant corrosion-resistant composite layer of the present utility model.
Fig. 4 is a schematic view of the structure of the present utility model after partial peeling.
The reference numerals indicate that in the figure, 1, a conductor layer, 2, an insulating layer, 3, a shielding layer, 4, an inner protective layer, 5, a fireproof corrosion-resistant composite layer, 501, an anti-skid layer, 502, a corrosion-resistant layer, 503, a heat insulating layer, 6, an outer protective layer and 7, a sun-proof layer.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
As shown in fig. 1-4, the embodiment provides a cable with good ageing resistance, which comprises a conductor layer 1, an insulating layer 2 and a shielding layer 3, wherein the insulating layer 2 and the shielding layer 3 are sequentially wrapped on the conductor layer 1 from inside to outside, a fireproof corrosion-resistant composite layer 5 is further wrapped on the shielding layer 3, and a sun-proof layer 7 is wrapped on the fireproof corrosion-resistant composite layer 5.
In the utility model, the conductor layer 1 is used as a basic cable core structure and is used for transmitting current and is made of high-conductivity materials such as copper or aluminum, the cable core structure has certain flexibility and bending resistance, the insulating layer 2 and the shielding layer 3 are sequentially arranged outside the cable core structure, the insulating layer 2 is wrapped outside a conductor, the conductor layer 1 is effectively isolated, current leakage is prevented, normal transmission of electric energy is ensured, the shielding layer 3 is used for limiting electric field and electromagnetic interference, the influence of an external magnetic field on the signal of the conductor layer 1 is effectively reduced, and stable transmission of the signal is ensured.
On the basis, the fireproof corrosion-resistant composite layer 5 and the sun-proof layer 7 for further protection are further arranged outside the shielding layer 3, wherein the sun-proof layer 7 is positioned at the outermost side and is used for primarily protecting the exposed part, so that the cable is prevented from being subjected to rapid sunlight aging for a long time, the fireproof corrosion-resistant composite layer 5 is positioned inside the sun-proof layer 7 and plays a role in two-channel protection, on one hand, the fireproof corrosion-resistant composite layer is used for blocking high temperature and playing a role in fireproof performance, a large amount of harmful gas is not generated even if a fire is subjected to continuous burning, on the other hand, the fireproof corrosion-resistant composite layer has certain corrosion resistance and is used for preventing the cable from being corroded when the cable is wetted, and the anti-aging performance of the cable is further improved.
An inner protective layer 4 is arranged between the fireproof corrosion-resistant composite layer 5 and the shielding layer 3, and the inner protective layer 4 is made of polyurethane.
An outer protective layer 6 is arranged between the fireproof corrosion-resistant composite layer 5 and the sun-proof layer 7, the outer protective layer 6 is made of polyethylene, and has good wear resistance and moisture resistance, is relatively environment-friendly and is convenient to use.
As a technical optimization scheme of the utility model, the fireproof and corrosion-resistant composite layer 5 comprises an anti-slip layer 501, a corrosion-resistant layer 502 and a heat insulation layer 503, wherein the anti-slip layer 501, the corrosion-resistant layer 502 and the heat insulation layer 503 are sequentially arranged from inside to outside.
The anti-slip layer 501 is made of silica gel, the corrosion-resistant layer 502 is made of low-smoke halogen-free flame-retardant material, not only has excellent flame retardant property, but also can resist chemical corrosion, generates low smoke and low toxic gas under the condition of high temperature of fire, improves safety, and the heat insulation layer 503 is made of graphene, so that the cable has the advantages of high heat conductivity, good chemical stability, high mechanical strength and the like, and can effectively reduce the temperature of the cable and improve the safety performance of the cable.
The insulating layer 2 is made of polyvinyl chloride, has high breakdown strength, low dielectric loss, good resin discharge resistance, corona resistance and partial discharge resistance, and has a good insulating effect.
The shielding layer 3 is made of tinned copper wire mesh, has high longitudinal tensile resistance, flexible cable and oxidation resistance superior to that of the traditional copper wire shielding.
The sun-proof layer 7 is made of fluoroplastic and has excellent weather resistance and chemical corrosion resistance, so that the sun-proof layer can be used for a long time in a severe outdoor environment.
While the basic principles and main features and advantages of the present utility model have been shown and described, it will be understood by those skilled in the art that the present utility model is not limited by the foregoing embodiments, which are described in the foregoing description merely illustrate the principles of the utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined in the appended claims and their equivalents.