Shielding cold-resistant high-voltage direct-current cable

Abstract

The utility model belongs to the technical field of cables, and particularly relates to a shielding cold-resistant high-voltage direct-current cable which comprises a battery cell, a shielding layer is fixedly connected to the surface of the battery cell, an insulating layer is fixedly connected to the surface of the shielding layer, and a connecting mechanism is fixedly connected to the surface of the insulating layer. The connecting mechanism comprises an insulation shielding connecting layer, the surface of the insulation shielding connecting layer is fixedly connected with the insulation layer, one end of the insulation shielding connecting layer is provided with a connecting block, and the surface of the insulation shielding connecting layer is provided with a connecting groove; when the high-voltage direct-current cable is built, the high-voltage direct-current cable can be connected with another cable through the connecting blocks and the connecting grooves on the surface of the insulation shielding connecting layer, so that the two cables can be better attached to each other when being connected, and a large gap is prevented from being leaked after connection; and external particles or water enters the cable through the gaps to cause electric leakage and influence current transmission.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a shielded cold-resistant high-voltage direct current cable. Background Art

[0002] High voltage cable is a type of power cable, which refers to the power cable used to transmit power between 1kv-1000kv, and is mostly used in power transmission and distribution.

[0003] The main function of the cable is to transmit electrical energy. Generally, high-voltage DC cables are used as power supply in DC systems. When using DC high-voltage cables for power transmission, excessive current will generate a magnetic field that affects the use of other nearby electrical components. If the DC high-voltage cable is used for power transmission when the outside temperature is too low, it will affect the transmission speed and increase power loss. Therefore, a shielded cold-resistant high-voltage DC cable is proposed to address the above problems. Utility Model Content

[0004] In order to make up for the shortcomings of the existing technology, the cable mainly plays the role of transmitting electric energy. Generally, high-voltage DC cables are used as power supply in DC systems. When using DC high-voltage cables for power transmission, excessive current will generate a magnetic field that affects the use of other nearby electrical components. If the DC high-voltage cable is used for power transmission when the external temperature is too low, it will affect the transmission speed and increase power loss. The utility model proposes a shielded cold-resistant high-voltage DC cable.

[0005] The utility model solves the technical problem by adopting a technical solution: a shielded cold-resistant high-voltage DC cable, comprising a battery core, a shielding layer is fixedly connected to the surface of the battery core, an insulating layer is fixedly connected to the surface of the shielding layer, and a connecting mechanism is fixedly connected to the surface of the insulating layer;

[0006] The connection mechanism comprises an insulating shielding connection layer, the surface of the insulating shielding connection layer is fixedly connected to the insulating layer, a connection block is arranged at one end of the insulating shielding connection layer, and a connection groove is opened on the surface of the insulating shielding connection layer.

[0007] Preferably, a water-blocking layer is fixedly connected to the surface of the insulating shielding connection layer, and a waterproof coating is sprayed on the surface of the water-blocking layer.

[0008] Preferably, a cold-resistant layer is fixedly connected to the surface of the water-blocking layer, and the material of the cold-resistant layer is polyvinyl chloride.

[0009] Preferably, a metal sheath is fixedly connected to the surface of the cold-resistant layer, and the metal sheath is a flexible metal.

[0010] Preferably, a rubber pressure-resistant layer is fixedly connected to the surface of the metal sheath, and an anti-corrosion coating is sprayed on the surface of the rubber pressure-resistant layer.

[0011] Preferably, the surface of the insulating layer is sprayed with flame retardant paint, and the material of the insulating layer is polyethylene.

[0012] Preferably, the shielding layer is made of graphite nylon, and stress holes are provided on the surface of the insulating shielding connection layer.

[0013] The utility model is beneficial in that:

[0014] The utility model provides an insulating layer, a connecting block and a connecting groove, so that when a high-voltage DC cable is constructed, it can be connected to another cable through the connecting block and the connecting groove on the surface of the insulating shielding connecting layer, so that the two cables can be more closely connected, and a large gap can be avoided after the connection, so that foreign particles or moisture can enter the cable through the gap to cause leakage and affect current transmission. The use of the insulating layer can avoid heat accumulation during current transmission to cause fire and damage the entire circuit. 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 schematic diagram of the structure of the battery core and the rubber pressure-resistant layer of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the connection block and the connection groove of the utility model;

[0018] Figure 3 It is a schematic diagram of the structure of the insulating shielding connection layer and the stress hole of the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the shielding layer and the water-blocking layer of the utility model;

[0020] Figure 5 It is a schematic structural diagram of the insulating layer and the battery core of the utility model.

[0021] In the figure: 1. battery cell; 2. shielding layer; 3. insulation layer; 4. connection mechanism; 401. insulation shielding connection layer; 402. connection block; 403. connection groove; 5. water-blocking layer; 6. cold-resistant layer; 7. metal sheath; 8. rubber pressure-resistant layer; 9. flame-retardant coating; 10. anti-corrosion coating; 11. waterproof coating; 12. stress hole. DETAILED DESCRIPTION

[0022] 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.

[0023] The following is combined with Figure 1-5 To further explain this application in detail,

[0024] The present application embodiment discloses a shielded cold-resistant high-voltage DC cable. Figure 2 and Figure 3 A shielded cold-resistant high-voltage DC cable comprises a battery core 1, a shielding layer 2 is fixedly connected to the surface of the battery core 1, an insulating layer 3 is fixedly connected to the surface of the shielding layer 2, and a connecting mechanism 4 is fixedly connected to the surface of the insulating layer 3;

[0025] The connection mechanism 4 includes an insulating shielding connection layer 401 , the surface of which is fixedly connected to the insulating layer 3 , a connection block 402 is provided at one end of the insulating shielding connection layer 401 , and a connection groove 403 is opened on the surface of the insulating shielding connection layer 401 .

[0026] Reference Figure 4 The surface of the insulating shielding connection layer 401 is fixedly connected with a water-blocking layer 5, and the surface of the water-blocking layer 5 is sprayed with a waterproof coating 11; by providing the water-blocking layer 5 and the waterproof coating 11, the battery core 1 can be further protected to prevent rainwater from entering the cable and contacting the battery core 1 to cause leakage after the outer layer is damaged during use of the cable, and the waterproof coating 11 is used to further reinforce the water-blocking layer 5.

[0027] Reference Figure 4 A cold-resistant layer 6 is fixedly connected to the surface of the water-blocking layer 5, and the material of the cold-resistant layer 6 is polyvinyl chloride; by setting the cold-resistant layer 6, the inside of the cable can be insulated to prevent the current transmission of the battery core 1 from being affected when the external temperature drops, and the use of polyvinyl chloride for insulation prevents the material from becoming brittle due to low temperature.

[0028] Reference Figure 4 The surface of the cold-resistant layer 6 is fixedly connected with a metal sheath 7, which is a flexible metal. By providing the metal sheath 7, the material inside the metal sheath 7 can be further bound and reinforced to avoid damage to the internal material during use.

[0029] Reference Figure 4 and Figure 5A rubber pressure-resistant layer 8 is fixedly connected to the surface of the metal sheath 7, and an anti-corrosion coating 10 is sprayed on the surface of the rubber pressure-resistant layer 8. By setting the rubber pressure-resistant layer 8 and the anti-corrosion coating 10, the materials inside the entire cable can be protected. Because the thickness of the rubber pressure-resistant layer 8 is relatively thick, damage during installation and transportation is avoided. The use of anti-corrosion coating can withstand wind and rain in the external environment and extend the service life.

[0030] Reference Figure 2 and Figure 4 The surface of the insulating layer 3 is sprayed with a flame retardant coating 9, and the material of the insulating layer 3 is polyethylene; by providing the flame retardant coating 9, it is possible to avoid heat accumulation and spontaneous combustion during high-voltage current transmission of the battery cell 1, thereby preventing damage to the entire circuit.

[0031] Reference Figure 3 The shielding layer 2 is made of graphite nylon, and a stress hole 12 is provided on the surface of the insulating shielding connection layer 401. By providing the stress hole 12, the tension can be dispersed when the cable is stretched due to thermal expansion and contraction during external use. The shielding layer 2 made of graphite nylon can stably shield the electromagnetic field inside the cable.

[0032] Working principle: When constructing a high-voltage DC cable, it can be connected to another cable through the connecting block 402 and the connecting groove 403 on the surface of the insulating shielding connecting layer 401. When the two cables are connected, they can fit more closely to avoid a large gap after the connection, so that foreign particles or moisture can enter the cable through the gap to cause leakage and affect current transmission. The use of the insulating layer 3 can avoid heat accumulation during current transmission to cause fire and damage the entire circuit. The water-blocking layer 5 and the waterproof coating 11 can further protect the battery cell 1 to avoid rainwater entering the cable and contacting the battery cell 1 after the outer layer is damaged during use, causing leakage. The waterproof coating 11 is used to further reinforce the water-blocking layer 5. The cold-resistant layer 6 is provided to keep the inside of the cable warm to avoid affecting the battery cell 1 when the external temperature drops. For current transmission, polyvinyl chloride is used for thermal insulation to avoid embrittlement of the material due to low temperature. A metal sheath 7 is provided to further bind and reinforce the material inside the metal sheath 7 to avoid damage to the internal material during use. A rubber pressure-resistant layer 8 and an anti-corrosion coating 10 are provided to protect the material inside the entire cable. Because the rubber pressure-resistant layer 8 is thicker, it also avoids damage during installation and transportation. The use of anti-corrosion coating can withstand wind and rain in the external environment to extend the service life. A flame-retardant coating 9 is provided to avoid heat accumulation and spontaneous combustion during high-voltage current transmission of the battery cell 1, thereby preventing damage to the entire line. A stress hole 12 is provided to disperse the tension when the cable expands and contracts due to heat expansion and contraction during external use. A shielding layer 2 made of graphite nylon is used to stably shield the electromagnetic field inside the cable.

[0033] 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 shielded cold-resistant high-voltage DC cable, characterized in that: It comprises a battery core (1), a shielding layer (2) being fixedly connected to the surface of the battery core (1), an insulating layer (3) being fixedly connected to the surface of the shielding layer (2), and a connecting mechanism (4) being fixedly connected to the surface of the insulating layer (3); The connection mechanism (4) comprises an insulating shielding connection layer (401), the surface of the insulating shielding connection layer (401) is fixedly connected to the insulating layer (3), one end of the insulating shielding connection layer (401) is provided with a connection block (402), and the surface of the insulating shielding connection layer (401) is provided with a connection groove (403).

2. The shielded cold-resistant high-voltage DC cable according to claim 1, characterized in that: A water-blocking layer (5) is fixedly connected to the surface of the insulating shielding connection layer (401), and a waterproof coating (11) is sprayed on the surface of the water-blocking layer (5).

3. A shielded cold-resistant high-voltage DC cable according to claim 2, characterized in that: A cold-resistant layer (6) is fixedly connected to the surface of the water-blocking layer (5), and the material of the cold-resistant layer (6) is polyvinyl chloride.

4. The shielded cold-resistant high-voltage DC cable according to claim 3, characterized in that: A metal sheath (7) is fixedly connected to the surface of the cold-resistant layer (6), and the metal sheath (7) is made of flexible metal.

5. The shielded cold-resistant high-voltage DC cable according to claim 4, characterized in that: A rubber pressure-resistant layer (8) is fixedly connected to the surface of the metal sheath (7), and an anti-corrosion coating (10) is sprayed on the surface of the rubber pressure-resistant layer (8).

6. The shielded cold-resistant high-voltage DC cable according to claim 1, characterized in that: The surface of the insulating layer (3) is sprayed with a flame retardant coating (9), and the material of the insulating layer (3) is polyethylene.

7. The shielded cold-resistant high-voltage DC cable according to claim 1, characterized in that: The shielding layer (2) is made of graphite nylon, and a stress hole (12) is provided on the surface of the insulating shielding connection layer (401).

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