Copper core fluoroplastic insulating steel tape armored high-temperature-resistant power cable

Abstract

The utility model discloses a copper core fluoroplastic insulation steel tape armored high-temperature-resistant power cable, which comprises an outer sheath, an armored layer, an oxygen isolation layer and a wrapping layer, a skeleton unit and a plurality of cable cores are arranged in the wrapping layer, and the skeleton unit is provided with a cooling channel. According to the power cable, the insulating layer and the outer sheath are made of fluoroplastic materials, so that the cable has high temperature resistance, voltage resistance, acid and alkali resistance, corrosion resistance and aging resistance. The cable cores are separated through the radial connecting sheets, so that mutual interference is avoided, the power transmission effect is improved, and stable operation of the cable is ensured. The cable has better tensile property and flame retardant property, and the cooling channel supports air cooling or water cooling, so that heat generated during operation of the cable can be taken away, and the temperature of the cable is reduced.

Description

Technical Field

[0001] The utility model relates to the field of cables, and more specifically to a copper core fluoroplastic insulated steel belt armored high temperature resistant power cable. Background Art

[0002] The main function of power cables is to transmit electric energy from power stations, substations and other places to the user end to meet the needs of people's daily life and industrial production. Through power cables, electric energy can be transmitted over long distances and with high efficiency. In the power system, power cables are also used to distribute electric energy. They distribute the electric energy on the main line to various branch lines and electrical equipment to ensure that each device can get enough power supply.

[0003] Existing power cables may not be able to maintain their electrical properties in high temperature environments. This may be due to the limited heat resistance of the cable insulation material or outer sheath, which causes the cable to age, deform or melt at high temperatures. Especially when used in high temperature environments such as nuclear power plants, petroleum, chemical industry, electricity, metallurgy, etc., it may not be able to withstand long-term high temperatures, thus causing safety accidents. In addition, the cable itself will generate heat during operation. If the heat dissipation effect is not good, the internal temperature of the cable will increase, affecting the performance and life of the cable. If the cable is operated at high load for a long time or in a high temperature environment, it is easy to cause overheating failures and may even cause safety accidents such as fire. In addition, the tensile performance of traditional power cables is insufficient, which makes the cable easily damaged when subjected to external tension, affecting the stable operation of the power system. Utility Model Content

[0004] The utility model aims to overcome the defects of the prior art and provides a copper core fluoroplastic insulated steel belt armored high temperature resistant power cable.

[0005] In order to achieve the above-mentioned object, the utility model provides the following technical solutions: a power cable, comprising an outer sheath, an armor layer, an oxygen-isolating layer and a wrapping layer arranged in sequence from the outside to the inside, a skeleton unit and a plurality of cable cores surrounding the skeleton unit are arranged in the wrapping layer, the cross section of the cable core is fan-shaped, the skeleton unit is connected to a plurality of end cables, each end cable is connected to the skeleton unit with a radial connecting piece, one radial connecting piece is provided between two adjacent cable cores, the skeleton unit has a cooling channel, the skeleton unit has a plurality of first strip-shaped convex ribs, the first strip-shaped convex ribs are provided in the wrapping layer, and the first strip-shaped convex ribs are provided in the wrapping layer. The convex rib has an installation cavity, and a first tensile core wire is arranged in the installation cavity. The cable core includes a conductor, an insulating layer and a flame retardant layer from the inside to the outside. The flame retardant layer has a first accommodating groove capable of accommodating the first strip convex rib. A plurality of second tensile core wires are also arranged in the wrapping layer. A plurality of second strip convex ribs are arranged on the outside of the flame retardant layer, and a second accommodating groove capable of accommodating the second tensile core wire is formed between two adjacent second strip convex ribs. The outer sheath is a fluoroplastic outer sheath, the armor layer is a steel belt armor layer, the insulation layer is a fluoroplastic insulation layer, and the conductor is a copper conductor.

[0006] Furthermore, the first strip-shaped convex rib and the second strip-shaped convex rib both extend along the length direction of the cable core.

[0007] Thereby increasing the tensile strength of the cable.

[0008] Furthermore, the flame retardant layer is a low-smoke halogen-free flame retardant layer.

[0009] Thereby, when the cable burns, the spread of fire can be effectively prevented and the release of smoke and toxic gases can be reduced.

[0010] Furthermore, there are three cable cores, three end cables and three first tensile cores, the three cable cores are distributed in a ring shape with equal spacing, the three end cables are distributed in a ring shape with equal spacing, and the three first tensile cores are distributed in a ring shape with equal spacing.

[0011] Therefore, the cable has a stable structure and good tensile strength.

[0012] Furthermore, each cable core has two of the second tensile core wires.

[0013] Thereby further enhancing the tensile performance of the cable.

[0014] Furthermore, the cross-sections of the first and second convex ribs are both semicircular.

[0015] Furthermore, the cross section of the end cable is circular.

[0016] Further, the end cable can abut the wrapping layer.

[0017] The end cable can thus resist external mechanical pressure or impact, thereby protecting the conductor inside the cable from damage.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. The power cable of the present application has an insulation layer and an outer sheath made of fluoroplastic material, so that the cable has high temperature resistance, voltage resistance, acid and alkali resistance, corrosion resistance, and aging resistance, and is widely used in AC rated voltage (U 0 / U) 0.6 / 1KV and below are used for long term in high temperature and harsh environment in nuclear power plants, petroleum, chemical industry, electric power, metallurgy and other industries.

[0020] 2. In the power cable of the present application, each cable core is separated by a radial connecting piece, thereby avoiding interference between each other, improving the power transmission effect, and ensuring stable operation of the cable.

[0021] 3. The power cable of the present application has good tensile performance. When the cable is subjected to external tension, the first and second tensile core wires can effectively disperse and withstand the tension, thereby protecting the internal structure of the cable from damage.

[0022] 4. The power cable of the present application has good flame retardant properties. When the cable burns, it can effectively prevent the spread of fire and reduce the release of smoke and toxic gases.

[0023] 5. The power cable of the present application has a good supporting skeleton unit, and the cooling channel supports air cooling or water cooling, which can take away the heat generated by the cable during operation, reduce the temperature of the cable, thereby extending the service life of the cable, and avoiding safety accidents such as fire caused by overheating of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the power cable from the first perspective;

[0025] Figure 2 This is an enlarged view of area A;

[0026] Figure 3 This is a schematic diagram of the power cable from the second perspective.

[0027] Explanation of the reference numerals: 1.1 outer sheath; 1.2 armor layer; 1.3 oxygen insulation layer; 1.4 sheath; 2 skeleton unit; 2.1 cooling channel; 2.2 first strip convex rib; 3.1 conductor; 3.2 insulation layer; 3.3 flame retardant layer; 3.4 second strip convex rib; 4 radial connecting piece; 5 end cable; 6 first tensile core wire; 7 second tensile core wire. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] The utility model provides Figure 1-3 A copper core fluoroplastic insulated steel belt armored high temperature resistant power cable shown in the figure comprises an outer sheath 1.1, an armor layer 1.2, an oxygen barrier layer 1.3 and a wrapping layer 1.4 arranged in sequence from outside to inside, a skeleton unit 2 and a plurality of cable cores surrounding the skeleton unit are arranged in the wrapping layer 1.4, the cross section of the cable core is fan-shaped, the skeleton unit 2 is connected to a plurality of end cables 5, each end cable 5 is connected to the skeleton unit 2 with a radial connecting piece 4, one radial connecting piece 4 is provided between two adjacent cable cores, the skeleton unit 2 has a cooling channel 2.1, the skeleton unit 2 has a plurality of first strip convex ribs 2.2, the first strip convex ribs 2.2 It has an installation cavity, in which a first tensile core wire 6 is arranged. The cable core comprises a conductor 3.1, an insulating layer 3.2 and a flame retardant layer 3.3 from the inside to the outside. The flame retardant layer 3.3 has a first accommodating groove capable of accommodating a first strip convex rib 2.2. A plurality of second tensile core wires 7 are also arranged in the wrapping layer 1.4. A plurality of second strip convex ribs 3.4 are arranged on the outer side of the flame retardant layer 3.3. A second accommodating groove capable of accommodating the second tensile core wire 7 is formed between two adjacent second strip convex ribs 3.4. The outer sheath is a fluoroplastic outer sheath, the armor layer is a steel belt armor layer, the insulation layer is a fluoroplastic insulation layer, and the conductor is a copper conductor.

[0030] The first convex rib 2.2 and the second convex rib 3.4 both extend along the length direction of the cable core; the flame retardant layer 3.3 is a low-smoke halogen-free flame retardant layer; there are three of each of the cable core, the end cable 5 and the first tensile core wire 6, the three cable cores are distributed in a circular shape with equal spacing, the three end cables 5 are distributed in a circular shape with equal spacing, and the three first tensile core wires 6 are distributed in a circular shape with equal spacing; each cable core has two of the second tensile core wires 7; the cross-sections of the first and second convex ribs are both semicircular; the cross-section of the end cable 5 is circular.

[0031] Working principle: The power cable of this application, the insulation layer and the outer sheath are made of fluoroplastic material, so the cable has high temperature resistance, voltage resistance, acid and alkali resistance, corrosion resistance, and aging resistance, and is widely used in AC rated voltage (U 0 / U) 0.6 / 1KV and below are used for long term in high temperature and harsh environment in nuclear power plants, petroleum, chemical industry, electric power, metallurgy and other industries.

[0032] When making the cable, firstly, the skeleton unit with the first tensile core wire installed is matched with multiple cable cores, so that each cable core is separated by a radial connecting piece, thereby avoiding interference with each other, improving the power transmission effect, and ensuring the stable operation of the cable. At the same time, the first strip convex rib is accommodated in the corresponding first accommodating groove, and then the second tensile core wire is installed, and then the cable core and the skeleton unit are wrapped by the wrapping layer, so that the skeleton unit and the multiple cable cores are closely connected together. The first and second tensile core wires make the cable have good tensile performance. When the cable is subjected to external tension, the first and second tensile core wires can effectively disperse and withstand the tension, thereby protecting the internal structure of the cable from damage. Then, the oxygen isolation layer is made in sequence, so that oxygen can be effectively isolated to prevent oxidation of the internal material of the cable. Then, the steel belt armor layer is made, so as to provide strong mechanical protection for the cable, which can resist external pressure and impact and prevent the cable from mechanical damage. Finally, the fluoroplastic outer sheath is made, so that the cable can operate stably in high temperature and harsh environment.

[0033] When the cable is in operation, especially in a high temperature environment, by delivering air cooling or water cooling medium into the cooling channel, the heat generated by the cable operation can be taken away, the temperature of the cable can be reduced, thereby extending the service life of the cable and avoiding safety accidents such as fire caused by overheating of the cable.

[0034] Although the present invention has been illustrated and described with respect to preferred embodiments, it should be understood by those skilled in the art that various changes and modifications may be made to the present invention without departing from the scope of the present invention as defined by the claims.

Claims

1. A copper core fluoroplastic insulated steel belt armored high temperature resistant power cable, characterized in that: The cable core comprises an outer sheath, an armor layer, an oxygen-isolating layer and a wrapping layer which are sequentially arranged from the outside to the inside. A skeleton unit and a plurality of cable cores surrounding the skeleton unit are arranged in the wrapping layer. The cross section of the cable core is fan-shaped. The skeleton unit is connected to a plurality of end cables. A radial connecting piece is connected between each end cable and the skeleton unit. There is one radial connecting piece between two adjacent cable cores. The skeleton unit has a cooling channel. The skeleton unit has a plurality of first strip convex ribs. The first strip convex ribs have an installation cavity. The installation cavity has a first tensile core wire. The cable core comprises a conductor, an insulating layer and a flame-retardant layer from the inside to the outside. The flame-retardant layer has a first accommodating groove capable of accommodating the first strip convex ribs. A plurality of second tensile core wires are also arranged in the wrapping layer. A plurality of second strip convex ribs are arranged on the outside of the flame-retardant layer. A second accommodating groove capable of accommodating the second tensile core wire is formed between two adjacent second strip convex ribs. The outer sheath is a fluoroplastic outer sheath. The armor layer is a steel belt armor layer. The insulating layer is a fluoroplastic insulating layer. The conductor is a copper conductor.

2. The copper core fluoroplastic insulated steel tape armored high temperature resistant power cable according to claim 1, characterized in that: The first strip-shaped convex rib and the second strip-shaped convex rib both extend along the length direction of the cable core.

3. The copper core fluoroplastic insulated steel tape armored high temperature resistant power cable according to claim 1, characterized in that: The flame retardant layer is a low-smoke halogen-free flame retardant layer.

4. The copper core fluoroplastic insulated steel tape armored high temperature resistant power cable according to claim 1, characterized in that: The cable cores, the end cables and the first tensile cores are all in number, the three cable cores are distributed in a ring shape with equal spacing, the three end cables are distributed in a ring shape with equal spacing, and the three first tensile cores are distributed in a ring shape with equal spacing.

5. The copper core fluoroplastic insulated steel tape armored high temperature resistant power cable according to claim 1, characterized in that: Each cable core has two of the second tensile strength cores.

6. The copper core fluoroplastic insulated steel tape armored high temperature resistant power cable according to claim 1, characterized in that: The cross sections of the first and second convex ribs are both semicircular.

7. The copper core fluoroplastic insulated steel tape armored high temperature resistant power cable according to claim 1, characterized in that: The cross section of the end cable is circular.

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