CN104952539B - The high cable of a kind of environmental protection compression strength - Google Patents

Abstract

The invention discloses an environment-friendly cable with high compressive strength, which comprises a reinforced inner core, a power cable, a filling layer, a wrapping tape layer, an oxygen barrier layer, a steel belt layer, an inner sheath layer, a steel wire armor layer, a water-blocking Ointment layer, outer sheath layer, braiding layer, graphite coating, the center of the filling layer is filled with a strengthening inner core, and four power cables are distributed on the outer ring of the strengthening inner core, and the filling layer A wrapping tape layer, an oxygen barrier layer, a steel belt layer, an inner sheath layer, a steel wire armor layer, a water-repelling grease layer, an outer sheath layer, a braided layer and a graphite coating are sequentially arranged from the inside to the outside. The cable is equipped with an oxygen barrier layer, a steel tape layer and a wrapping tape layer to improve the flame retardant level of the cable. The setting of the graphite coating can prevent the cable from being damaged by the induced electromotive force during operation, and can protect the cable well. , the cable has the characteristics of good water resistance, fire resistance, high strength, deformation resistance, long service life and high temperature resistance, and when the cable is recycled, it is environmentally friendly.

Description

An environmentally friendly cable with high compressive strength

technical field

The invention relates to the technical field of cable design, in particular to an environment-friendly cable with high compressive strength.

Background technique

With the rapid development of my country's economy, my country's high-rise buildings, subways, nuclear power plants, shipbuilding, optoelectronic communications, etc. are developing at an unprecedented speed, and the consumption of wires and cables has also increased rapidly. Power cable is a kind of cable used to transmit and distribute electric energy, and it is widely used in various industries such as communication and civil use.

Generally, the insulation material of power cables sold on the market is made of ordinary PVC, which has poor external strength performance. When working with high current and high voltage, the external insulation layer is prone to deformation, even breakdown, and the insulation performance is affected. Affect the effect of power transmission, and even cause safety accidents. The existing cables cannot achieve high bending durability and high flexibility at the same time, and there are disadvantages such as not being environmentally friendly, so how to design a high-strength, environmentally friendly cable is a need The problem to be solved, such as the Chinese patent application number CN201110376167.4, proposes a cable, including a conductor formed by twisting multiple tinned copper wires, the conductor is wrapped with an insulating layer to form a wire, and the wire is twisted with a polypropylene filling layer to form a power cable The cable core is coated with heat insulation layer, inner sheath, copper wire braided shielding layer and outer sheath from inside to outside in sequence. The invention is simple, low in production cost, long in service life, good in physical properties and flame retardant. Good, but because this kind of cable is made of polypropylene material, when the polypropylene is burned, the light transmittance is below 15%, and at the same time, a lot of toxic gas is released when it is burned, which is not conducive to environmental protection, and the cable is generally Buried in the soil, it is very easy to be damaged by mechanical external forces such as excavators during road repairs or re-construction. The cables used in such cases are not only required to have high bending durability, but also to be easily wired. From this point of view, high flexibility is also required, and this type of cable cannot achieve high bending durability and high flexibility at the same time, thereby reducing the environmental adaptability of the cable.

Contents of the invention

The purpose of the present invention is to provide an environment-friendly cable with high compressive strength, so as to solve the problems raised in the above-mentioned background technology.

In order to achieve the above purpose, the present invention provides the following technical solutions: an environmentally friendly cable with high compressive strength, including a reinforced inner core, a power cable, a filling layer, a wrapping tape layer, an oxygen barrier layer, a steel strip layer, and an inner sheath layer , steel wire armor layer, water-blocking grease layer, outer sheath layer, braided layer, graphite coating, the center of the filling layer is filled with a reinforced inner core, and the outer ring of the reinforced inner core is distributed with four A power cable, the outside of the filling layer is wrapped with a wrapping tape layer, and the wrapping tape layer is a laminated wrapping tape layer bonded by alkali-free glass fiber base tape and hydrated hydroxide, and the wrapping tape The outside of the oxygen barrier layer is wrapped with an oxygen barrier layer. The oxygen barrier layer is a polymer compound based on olefin polymer, which is blended by adding hydrated hydroxide through a coupling agent. The outside of the oxygen barrier layer is wrapped with a steel strip. The steel strip layer is formed by wrapping galvanized steel strips with double-layer gaps, the outside of the steel strip layer is wrapped with an inner sheath layer, and the outside of the inner sheath layer is twisted with a single-strand steel wire armor layer, the steel wire armor layer is formed by wrapping galvanized round steel wires, the steel wire armor layer is also provided with an outer sheath layer, and the water-blocking grease layer is filled between the steel wire armor layer and the In the gap left between the outer sheath layers, the water-blocking ointment layer is composed of base ointment components, expansion material components and additives, and the expansion material is a synthetic super absorbent resin. The outer sheath The outside of the braiding layer is covered with a braiding layer, which is a metal shielding layer woven by steel wires. The outside of the braiding layer is covered with a graphite coating, and the graphite coating is a coating mixed with graphite and a functional agent. layer, the functional agent is adhesive, colorant or insect repellent, and the power cable also includes conductor, semiconductor, insulating layer and flame retardant layer, the conductor is arranged in the innermost layer of the power cable, and the semiconductor, insulating layer and the flame-retardant layer are wrapped sequentially on the outside of the conductor from the inside to the outside, wherein the flame-retardant layer is made of ceramic silicon rubber refractory material.

Preferably, the gap formed between the insulating layer and the flame retardant layer is also filled with non-alkali glass fiber cloth.

Preferably, the cross-section of the conductor is a sector of 180 degrees.

Preferably, a filling rope is further arranged between the insulating layer and the semiconductor.

Preferably, the diameter of the power cable is 80mm to 300mm.

Preferably, between the filling layer, the wrapping tape layer, the oxygen barrier layer, the steel strip layer, the inner sheath layer, the steel wire armor layer, the water-blocking grease layer, the outer sheath layer, the braided layer and the graphite coating The thickness ratio is 1.5:3:1.6:2.2:3.5:7.5:15:2:3:2.5.

Compared with the prior art, the beneficial effect of the present invention is that the environmentally friendly cable with high compressive strength is sequentially provided with a reinforced inner core, a filling layer, a wrapping tape layer, an oxygen barrier layer, a steel strip layer, an inner Sheath layer, steel wire armor layer, water-blocking ointment layer, outer sheath layer, braided layer and graphite coating, water-blocking ointment layer plays a waterproof role, oxygen barrier layer, steel tape layer and wrapping tape layer The flame retardant level of the cable is improved, and the mechanical energy is improved, and it is not easy to be damaged and cracked. More importantly, there is less fog and gas when burning, which is beneficial to environmental protection. It is convenient for fire-fighting and rescue work, and at the same time, it is filled with halogen-free elements in the rope, and does not produce smoke and poisonous gas when burning, which is beneficial to environmental protection. The service life of the cable is improved. The graphite coating is mixed with graphite and a functional agent. The functional agent is an adhesive, a colorant or an insect repellent, which improves the comprehensive function of the cable. The inner sheath layer and the outer sheath layer are polychlorinated Made of vinyl material, it has a good flame retardant effect. The steel wire armor and braid play a good shielding role, further improving the anti-interference performance of the entire cable, and strengthening the inner core and filling layer to strengthen the cable strength. role.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic structural diagram of the power cable of the present invention.

In the figure: 1 reinforced inner core, 2 power cable, 21 conductor, 22 semiconductor, 23 insulating layer, 24, flame retardant layer, 25, filling rope, 3 filling layer, 4 wrapping tape layer, 5 oxygen barrier layer, 6 steel Belt layer, 7 inner sheath layer, 8 steel wire armor layer, 9 water-blocking grease layer, 10 outer sheath layer, 11 braiding layer, 12 graphite coating.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Figure 1-2, the present invention provides a technical solution: an environmentally friendly cable with high compressive strength, including a reinforced inner core 1, a power cable 2, a filling layer 3, a wrapping tape layer 4, an oxygen barrier layer 5, Steel strip layer 6, inner sheath layer 7, steel wire armor layer 8, water-blocking grease layer 9, outer sheath layer 10, braided layer 11, graphite coating 12, and filling layer 3 are set so that when the cable is bent , the pressure generated can be absorbed by the deformation of the filling layer, thus relieving the pressure between the three insulated power cables, and as a result, the cable has high bending durability. Further, when the cable is bent, due to the deformation of the filling layer 3 Therefore, the bending rigidity of the cable is lower than that of ordinary cables, that is, the cable has high flexibility, so it is easy to carry out wiring. The center of the filling layer 3 is filled with a reinforcing inner core 1, which is a flexible cotton rope. It has good flexibility and high strength, and plays the role of strengthening the strength of the cable. There are four power cables 2 distributed on the outer ring of the reinforced inner core 1, and the outside of the filling layer 3 is wrapped with a wrapping tape layer 4, and the wrapping tape layer 4 It is a laminated wrapping tape layer bonded by alkali-free glass silk base tape and hydrated hydroxide. The outer wrapping tape layer 4 is wrapped with an oxygen barrier layer 5. The oxygen barrier layer 5 is based on olefin polymer. Coupling agent is added with hydrated hydroxide and blended polymer compound. The outside of the oxygen barrier layer 5 is wrapped with a steel belt layer 6. Oxygen layer 5, steel belt layer 6 and wrapping belt layer 4 improve the flame retardant level of the cable, and improve the mechanical energy, which is not easy to be damaged and cracked. More importantly, there is less fog and gas when burning, which is beneficial to environmental protection and fog through. The luminous rate is above 80%, and the visual distance is up to 7m. It is convenient for fire rescue work in case of fire. The outside of the steel belt layer 6 is wrapped with an inner sheath layer 7, and the outside of the inner sheath layer 7 is twisted with a single-strand steel wire armor. 8, the steel wire armor layer 8 is wrapped with galvanized round steel wires, the setting of the steel wire armor layer 8 improves the shielding performance of the cable, thereby improving the service life of the cable, and the outside of the steel wire armor layer 8 is also designed There is an outer sheath layer 10, and the water-blocking ointment layer 9 is filled in the gap left between the steel wire armor layer 8 and the outer sheath layer 10. The water-blocking ointment layer 9 is mainly composed of base ointment components, expansion Composed of material components and additives, the expansion material is a synthetic super absorbent resin, the outer sheath layer 10 is covered with a braided layer 11, the braided layer 11 is a metal shielding layer braided by steel wire, and the braided layer 11 is copper The material plays a very good shielding role and further improves the anti-interference performance of the entire cable. The outside of the braid 11 is coated with a graphite coating 12, and the graphite coating 12 is a coating mixed with graphite and a functional agent. The agent is an adhesive, colorant or insect repellant. The setting of graphite coating 12 can prevent the cable from being damaged by the induced electromotive force during operation, which can protect the cable well and prolong the service life of the cable. The adhesive can The graphite coating 12 is better combined with the braiding layer 11; the coloring agent can be used for the same cable; the insect repellent can be used to disperse mosquitoes to protect the cable; the comprehensive function of the cable is improved, and the power cable 2 also includes a conductor 21 , semiconductor 22, insulating layer 2 3 and a flame retardant layer 24, the conductor 21 is arranged on the innermost layer of the power cable 2, and the semiconductor 22, the insulating layer 23 and the flame retardant layer 24 are wrapped around the outside of the conductor 21 in sequence from the inside to the outside, wherein the flame retardant layer 24 is ceramic silicon Rubber refractory material, the gap formed between the insulating layer 23 and the flame-retardant layer 24 is also filled with non-alkali glass fiber cloth, the cross section of the conductor 21 is 180 degrees fan-shaped, the diameter of the power cable 2 is 80mm to 300mm, and the filling layer 3 , wrapping tape layer 4, oxygen barrier layer 5, steel tape layer 6, inner sheath layer 7, steel wire armor layer 8, water-blocking grease layer 9, outer sheath layer 10, braided layer 11 and graphite coating layer 12 The thickness ratio between them is 1.5:3:1.6:2.2:3.5:7.5:15:2:3:2.5. The setting of semiconductor 22 can significantly improve the waterproof performance of the cable and prolong the service life, especially when the cable is damaged, water When it penetrates into the conductor 91, because the semiconductor 22 is electrified, the entire cable is avoided from being scrapped, and only the damaged part of the cable needs to be repaired or replaced, which can greatly save maintenance costs and shorten maintenance time.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (6)

1. An environmentally friendly cable with high compressive strength, including a reinforced inner core (1), a power cable (2), a filling layer (3), a wrapping tape layer (4), an oxygen barrier layer (5), and a steel tape layer (6), inner sheath layer (7), steel wire armor layer (8), water-blocking grease layer (9), outer sheath layer (10), braided layer (11), graphite coating (12), It is characterized in that: the center of the filling layer (3) is filled with a reinforcing inner core (1), and four power cables (2) are circumferentially distributed on the outer ring of the reinforcing inner core (1), and the filling layer The outside of (3) is wrapped with a wrapping tape layer (4), and the wrapping tape layer (4) is a lapping tape layer bonded by an alkali-free glass silk base tape and a hydrated hydroxide, and the wrapping tape layer The outside of the tape layer (4) is wrapped with an oxygen-barrier layer (5), and the oxygen-barrier layer (5) is a high molecular compound based on olefin polymer, which is blended by adding hydrated hydroxide through a coupling agent. The outside of the oxygen barrier layer (5) is wrapped with a steel strip layer (6), and the steel strip layer (6) is formed by wrapping a galvanized steel strip with a double-layer gap, and the outer wrapping of the steel strip layer (6) There is an inner sheath layer (7), and the outer twist of the inner sheath layer (7) has a single-strand steel wire armor layer (8), and the steel wire armor layer (8) is wrapped by galvanized round steel wire. Into, the outside of the steel wire armor layer (8) is also provided with an outer sheath layer (10), and the water-blocking grease layer (9) is filled between the steel wire armor layer (8) and the outer sheath layer In the gap left between (10), the water-blocking ointment layer (9) is composed of base ointment components, expansion material components and additives, and the expansion material is a synthetic superabsorbent resin. The outer part of the sheath layer (10) is covered with a braided layer (11), the braided layer (11) is braided by steel wire, and the outer part of the braided layer (11) is covered with a graphite coating (12), so The graphite coating (12) is a coating mixed with graphite and a functional agent, the functional agent is an adhesive, a colorant or an insect repellent, and the power cable (2) also includes a conductor (21), a semiconductor (22) , an insulating layer (23) and a flame retardant layer (24), the conductor (21) is arranged on the innermost layer of the power cable (2), and the semiconductor (22), the insulating layer (23) and the flame retardant layer (24) The conductor (21) is wrapped sequentially from the inside to the outside, wherein the flame retardant layer (24) is ceramic silicon rubber refractory material. 2. An environment-friendly cable with high compressive strength according to claim 1, characterized in that: the gap formed between the insulating layer (23) and the flame-retardant layer (24) is also filled with alkali-free glass fiber cloth. 3. An environment-friendly cable with high compressive strength according to claim 1, characterized in that: the cross section of the conductor (21) is a sector of 180 degrees. 4. An environment-friendly cable with high compressive strength according to claim 1, characterized in that: a filling rope is arranged between the insulating layer (23) and the semiconductor (22). 5. An environment-friendly cable with high compressive strength according to claim 1, characterized in that: the diameter of the power cable (2) is 80mm to 300mm. 6. A kind of environment-friendly cable with high compressive strength according to claim 1, characterized in that: the filling layer (3), the wrapping tape layer (4), the oxygen barrier layer (5), the steel strip layer ( 6), between the inner sheath layer (7), the steel wire armor layer (8), the water-blocking grease layer (9), the outer sheath layer (10), the braided layer (11) and the graphite coating (12) The thickness ratio is 1.5:3: 1.6:2.2:3.5:7.5:15:2:3:2.5.