Novel shielding power cable

Abstract

The utility model belongs to the field of cables, and particularly relates to a novel shielding power cable which comprises a guide core, a protection mechanism is arranged on the surface of the guide core, the protection mechanism comprises pipe silicon, the silicon is fixedly connected to the surface of the guide core, graphite is fixedly connected to the surface of the silicon, a polyethylene pipe is fixedly connected to the surface of the graphite, and the polyethylene pipe is fixedly connected to the surface of the graphite. The surface of the conductor core is fixedly connected with an insulating layer, the insulating layer is made of a polytetrafluoroethylene material, the surface of the insulating layer is fixedly connected with a filling layer, and the filling layer is made of a polyurethane foam material; through the arrangement of the protection mechanism, current generated by lightning stroke can be guided into silicon along the cable, when the current is guided into the silicon, the silicon can rapidly burn and generate high temperature to melt the polyethylene layer, and graphite can wrap the surface of the wire to form a protection layer, so that the current is prevented from further damaging the wire, and the guide rod connected with the cable is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the field of cables, in particular to a novel shielded power cable. Background Art

[0002] The shielding layer of the shielded cable is mainly made of non-magnetic materials such as copper and aluminum, and the thickness is very thin, which is much smaller than the skin depth of the metal material at the operating frequency. The effect of the shielding layer is not mainly due to the reflection and absorption of the electric field and magnetic field by the metal body itself, but due to the grounding of the shielding layer. Different forms of grounding will directly affect the shielding effect. For the electric field and magnetic field shielding layers, different grounding methods are used, which can be ungrounded, single-ended grounded or double-ended grounded.

[0003] In thunderstorm weather, if a traditional shielded cable is struck directly by lightning, the shielding layer of the cable will form a conductive path, introducing the lightning current into the cable connection. Since the lightning current is relatively strong, the cable connection will be damaged or catch fire due to the excessive current, causing great losses. Therefore, a new type of shielded power cable is proposed to address the above problems. Utility Model Content

[0004] In order to make up for the deficiencies of the prior art, in thunderstorm weather, if a traditional shielded cable is directly struck by lightning, the shielding layer of the cable will form a conductive path, introducing the lightning current into the connection of the cable. Since the lightning current is relatively strong, the connection of the cable will be damaged or catch fire due to the excessive current, causing great losses. The utility model proposes a new shielded power cable.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a novel shielded power cable, comprising a guide core, the surface of which is provided with a protection mechanism;

[0006] The protection mechanism comprises a tube silicon, the silicon is fixedly connected to the surface of the guide core, the surface of the silicon is fixedly connected to graphite, and the surface of the graphite is fixedly connected to a polyethylene tube.

[0007] Preferably, an insulating layer is fixedly connected to the surface of the guide core, and the insulating layer is made of polytetrafluoroethylene.

[0008] Preferably, a filling layer is fixedly connected to the surface of the insulating layer, and the filling layer is made of polyurethane foam material.

[0009] Preferably, a flame retardant layer is bonded to the surface of the filling layer, and the flame retardant layer is made of chloroprene rubber.

[0010] Preferably, a heat-resistant layer is fixedly connected to the surface of the flame-retardant layer, and the heat-resistant layer is made of polyimide material. A waterproof layer is fixedly connected to the surface of the heat-resistant layer, and the waterproof layer is made of hemp material.

[0011] Preferably, a thermal insulation layer is fixedly connected to the surface of the waterproof layer, and the thermal insulation layer is made of ceramic fiber material. A lightning protection layer is fixedly connected to the surface of the thermal insulation layer, and the lightning protection layer is made of lightning protection rubber material.

[0012] Preferably, a protective layer is fixedly connected to the surface of the lightning protection layer, and the protective layer is made of chlorinated polyethylene.

[0013] The utility model is beneficial in that:

[0014] The utility model provides a protection mechanism, and the current generated by lightning strike will be introduced into the silicon along the cable. When the current is introduced into the silicon, the silicon will burn quickly, generate high temperature, melt the polyethylene layer, and the graphite can be wrapped on the surface of the wire to form a protective layer, preventing the current from further damaging the wire and avoiding damage to the guide rod connected to the cable; BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0017] Figure 2 It is a three-dimensional diagram of the local structure of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the protection mechanism of the utility model;

[0019] Figure 4 It is a partial structural schematic diagram of the utility model.

[0020] In the figure: 1. conductor core; 2. protection mechanism; 201. silicon; 202. graphite; 203. polyethylene tube; 3. insulation layer; 4. filling layer; 5. flame retardant layer; 6. heat resistant layer; 7. waterproof layer; 8. thermal insulation layer; 9. lightning protection layer; 10. protective layer. DETAILED DESCRIPTION

[0021] 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.

[0022] The following is combined with Figure 1-4 To further explain this application in detail,

[0023] The present application embodiment discloses a novel shielded power cable. Figure 1 , Figure 2 and Figure 3 ,A novel shielded power cable comprises a conductor core 1, and a protective mechanism 2 is arranged on the surface of the conductor core 1;

[0024] The protection mechanism 2 includes a tube silicon 201 , the silicon 201 is fixedly connected to the surface of the guide core 1 , the surface of the silicon 201 is fixedly connected to graphite 202 , and the surface of the graphite 202 is fixedly connected to a polyethylene tube 203 .

[0025] Reference Figure 4 The surface of the conductor core 1 is fixedly connected with an insulating layer 3, and the insulating layer 3 is made of polytetrafluoroethylene; the conductor core 1 can be protected by the insulating layer 3, has higher heat resistance and mechanical strength, and is suitable for high temperature and high pressure environments.

[0026] Reference Figure 4 A filling layer 4 is fixedly connected to the surface of the insulating layer 3, and the filling layer 4 is made of polyurethane foam material; the filling layer 4 is used to prevent it from being affected and damaged by the external environment. The filling layer 4 can play a buffering role and protect the conductor core 1 from damage such as corrosion and oxidation.

[0027] Reference Figure 4 The surface of the filling layer 4 is bonded with a flame retardant layer 5, which is made of chloroprene rubber. The flame retardant layer 5 can effectively suppress the spread of flames, so that when a fire occurs, the fire is limited to a local area to avoid the expansion of the fire.

[0028] Reference Figure 4 The surface of the flame retardant layer 5 is fixedly connected with a heat-resistant layer 6, which is made of polyimide material. The surface of the heat-resistant layer 6 is fixedly connected with a waterproof layer 7, which is made of oily hemp material. The heat-resistant layer 6 can effectively isolate the influence of external heat sources on the guide core 1 in a high temperature environment to prevent the guide core 1 from overheating or even burning. The waterproof layer 7 can isolate the influence of moisture on the guide core 1 to prevent the guide core 1 from being damaged by corrosion and short circuit.

[0029] Reference Figure 4The surface of the waterproof layer 7 is fixedly connected with an insulation layer 8, and the insulation layer 8 is made of ceramic fiber material. The surface of the insulation layer 8 is fixedly connected with a lightning protection layer 9, and the lightning protection layer 9 is made of lightning protection rubber material; through the insulation layer 8, the insulation layer 8 can insulate the inside of the cable, keep the temperature inside the cable stable, and reduce energy consumption. The lightning protection layer 9 prevents lightning from directly striking the wire, so that the overvoltage amplitude acting on the line insulator string is reduced. This is the most basic lightning protection measure for power transmission lines.

[0030] Reference Figure 4 A protective layer 10 is fixedly connected to the surface of the lightning protection layer 9, and the protective layer 10 is made of chlorinated polyethylene. The protective layer 10 can protect the cable from the invasion of external impurities and moisture to prevent external force from directly damaging the cable, and has good sealing performance.

[0031] Working principle: A protective mechanism 2 is set at a certain distance in the cable. Electricity can be transmitted through the conductor core 1. The insulating layer 3 can protect the conductor core 1 to prevent the filling material from merging with the conductor core 1. When the external environment changes, such as temperature changes, mechanical vibrations, etc., the filling layer 4 can play a buffering role to reduce the impact on the conductor core 1. The flame retardant layer 5 can effectively suppress the spread of flames. The heat-resistant layer 6 can prevent the cable from burning in a high temperature environment. The waterproof layer 7 can prevent the conductor core 1 from being damaged by corrosion and short circuits. The insulation layer 8 can keep the cable The internal temperature is relatively stable. The lightning protection layer 9 prevents lightning from directly acting on the conductor core 1 and damaging the conductor core 1. The protective layer 10 has good sealing properties to prevent the external environment from damaging the conductor core 1. When the cable is struck by lightning, the lightning protection layer 9 can disperse the current generated by the lightning strike. The high voltage generated by the current will ignite the silicon 201. The high temperature generated by the combustion of silicon 201 will melt the polyethylene tube 203 connected to the graphite 202. The melted polyethylene tube 203 forms a protective layer 10 on the asbestos, further enhancing the protection effect on the conductor core 1.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A new type of shielded power cable, Features: It comprises a guide core (1), wherein a protective mechanism (2) is provided on the surface of the guide core (1); The protection mechanism (2) comprises a tube silicon (201), the silicon (201) being fixedly connected to the surface of the guide core (1), the surface of the silicon (201) being fixedly connected to graphite (202), and the surface of the graphite (202) being fixedly connected to a polyethylene tube (203).

2. A new shielded power cable according to claim 1, Features: An insulating layer (3) is fixedly connected to the surface of the guide core (1), and the insulating layer (3) is made of polytetrafluoroethylene.

3. A new shielded power cable according to claim 2, Features: A filling layer (4) is fixedly connected to the surface of the insulating layer (3), and the filling layer (4) is made of polyurethane foam material.

4. A new shielded power cable according to claim 3, Features: A flame retardant layer (5) is bonded to the surface of the filling layer (4), and the flame retardant layer (5) is made of chloroprene rubber.

5. A new shielded power cable according to claim 4, Features: The surface of the flame retardant layer (5) is fixedly connected to a heat-resistant layer (6), the heat-resistant layer (6) is made of a polyimide material, and the surface of the heat-resistant layer (6) is fixedly connected to a waterproof layer (7), the waterproof layer (7) is made of a hemp material.

6. A novel shielded power cable according to claim 5, Features: A thermal insulation layer (8) is fixedly connected to the surface of the waterproof layer (7), and the thermal insulation layer (8) is made of a ceramic fiber material. A lightning protection layer (9) is fixedly connected to the surface of the thermal insulation layer (8), and the lightning protection layer (9) is made of a lightning protection rubber material.

7. A new shielded power cable according to claim 6, Features: A protective layer (10) is fixedly connected to the surface of the lightning protection layer (9), and the protective layer (10) is made of chlorinated polyethylene.

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