High-voltage DC cable

Abstract

The utility model provides a high-voltage DC cable, which comprises an insulating wear-resistant layer, a rubber protection ring and a heat insulation layer, the insulating wear-resistant layer is sleeved outside the rubber protection ring, the rubber protection ring is sleeved outside the heat insulation layer, and an insulating sleeve is arranged inside the heat insulation layer. According to the utility model, the first insulating carbon black and the second insulating carbon black are arranged in the cable, so that the cable core can be conveniently separated from other materials and can not be directly contacted with the other materials, and when the DC cable is used in an external severe environment, such as a relatively hot or relatively low temperature, the cable is prevented from being broken due to thermal expansion and cold contraction, and the service life of the cable is prolonged. The cable core and the external material can be correspondingly changed according to the performance of the cable core and the external material, the service life of the DC cable is prolonged, the rubber protection ring is arranged, the first supporting plate and the second supporting plate on the surface of the rubber protection ring are utilized, the interior of the DC cable can play a supporting role, corresponding contraction and expansion spaces can be provided, and the service life of the DC cable is prolonged. And the use of the DC cable is facilitated.

Description

Technical Field

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

[0002] DC actually means direct current in English, so DC line is a direct current line. DC line is currently widely used in digital products, small appliances, and testing. At present, DC line applications are basically in power output and charging of various digital products and small appliances. The function is simple but indispensable. It is a basic component in the electronics industry, so it has a wide range of uses.

[0003] After massive searches, it was found that in order to improve the tensile performance of existing cables, the wire core and the outer protective layer are generally tightly and fixedly connected. However, due to different usage environments, the cable itself will also undergo corresponding changes with the environment, such as thermal expansion and contraction. The wire core and protective material inside the cable are made of different materials, so the degree of thermal expansion and contraction is also different, which makes it easy for the cable to break.

[0004] Therefore, it is necessary to provide a high voltage DC cable to solve the above technical problems. Utility Model Content

[0005] The utility model provides a high-voltage DC cable, which solves the problems in the background technology.

[0006] In order to solve the above technical problems, the utility model provides a high-voltage DC cable, comprising an insulating wear-resistant layer, a rubber protective ring, and a thermal insulation layer, wherein the insulating wear-resistant layer is sleeved on the outside of the rubber protective ring, the rubber protective ring is sleeved on the outside of the thermal insulation layer, an insulating sleeve is arranged inside the thermal insulation layer, a wire core is arranged inside the insulating sleeve, a second insulating carbon black is filled between the insulating sleeve and the wire core, and a first insulating carbon black is filled between the thermal insulation layer and the insulating sleeve.

[0007] Preferably, the outer surface and inner wall surface of the rubber protective ring are respectively provided with a first support plate and a second support plate.

[0008] Preferably, a filling layer is filled between the rubber protective ring and the wear-resistant insulating layer and the heat insulation layer.

[0009] Preferably, the filling layer is glass fiber.

[0010] Preferably, a reinforcing core is provided in the middle of the insulating sleeve.

[0011] Preferably, a plurality of the first support plates and the second support plates are provided, and the plurality of first support plates and the second support plates are equidistantly and circumferentially mounted on the surface of the rubber protective ring.

[0012] Preferably, the first support plate and the second support plate are both made of rubber material.

[0013] Compared with the related art, the high voltage DC cable provided by the utility model has the following beneficial effects:

[0014] 1. Compared with the prior art, the high-voltage DC cable is provided with the first insulating carbon black and the second insulating carbon black inside the cable, so that the wire core is separated from other materials and they are not in direct contact with each other, so that when the DC cable is used in a harsh external environment, such as a hot or low temperature, the cable is prevented from being broken due to thermal expansion and contraction, so that the wire core and the external materials can change accordingly according to their own performance, thereby improving the service life of the DC cable, and by providing a rubber protective ring, the first supporting plate and the second supporting plate on the surface of the rubber protective ring can play a supporting role inside the DC cable, so that corresponding contraction and expansion space can be provided, which is convenient for the use of the DC cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of a high-voltage DC cable provided by the utility model;

[0016] Figure 2 A schematic diagram of the structure of a rubber protective ring for a high-voltage DC cable provided by the utility model;

[0017] Figure 3 This is a schematic diagram of the second insulating carbon black structure of a high-voltage DC cable provided by the utility model.

[0018] Numbers in the figure:

[0019] 1. Insulating wear-resistant layer; 2. Filling layer; 3. Rubber protective ring; 4. Heat insulation layer; 5. First insulating carbon black; 6. Insulating sleeve; 7. Second insulating carbon black; 8. Wire core; 9. Reinforced core; 10. First support plate; 11. Second support plate. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0021] First embodiment

[0022] Please refer to Figure 1-3 A high-voltage DC cable comprises an insulating wear-resistant layer 1, a rubber protective ring 3, and a heat-insulating layer 4, wherein the insulating wear-resistant layer 1 is sleeved on the outside of the rubber protective ring 3, and the rubber protective ring 3 is sleeved on the outside of the heat-insulating layer 4, an insulating sleeve 6 is arranged inside the heat-insulating layer 4, a wire core 8 is arranged inside the insulating sleeve 6, a second insulating carbon black 7 is filled between the insulating sleeve 6 and the wire core 8, and a first insulating carbon black 5 is filled between the heat-insulating layer 4 and the insulating sleeve 6.

[0023] By arranging the first insulating carbon black 5 and the second insulating carbon black 7 inside the cable, it is convenient to separate the wire core 8 from other materials and prevent them from direct contact, so that when the DC cable is used in a harsh external environment, such as a hot or low temperature, the cable can be prevented from breaking due to thermal expansion and contraction, so that the wire core 8 and the external material can undergo corresponding changes according to their own performance, thereby improving the service life of the DC cable, and by arranging the rubber protective ring 3, the first support plate 10 and the second support plate 11 on the surface of the rubber protective ring 3 can play a supporting role inside the DC cable, thereby providing corresponding contraction and expansion space, which is convenient for the use of the DC cable.

[0024] The working principle of a high voltage DC cable provided by the utility model is as follows:

[0025] By arranging the first insulating carbon black 5 and the second insulating carbon black 7 inside the cable, it is convenient to separate the wire core 8 from other materials and prevent them from direct contact, so that when the DC cable is used in a harsh external environment, such as a hot or low temperature, the cable can be prevented from breaking due to thermal expansion and contraction, so that the wire core 8 and the external material can undergo corresponding changes according to their own performance, thereby improving the service life of the DC cable, and by arranging the rubber protective ring 3, the first support plate 10 and the second support plate 11 on the surface of the rubber protective ring 3 can play a supporting role inside the DC cable, thereby providing corresponding contraction and expansion space, which is convenient for the use of the DC cable.

[0026] Compared with the related art, the high voltage DC cable provided by the utility model has the following beneficial effects:

[0027] By arranging the first insulating carbon black 5 and the second insulating carbon black 7 inside the cable, it is convenient to separate the wire core 8 from other materials and prevent them from direct contact, so that when the DC cable is used in a harsh external environment, such as a hot or low temperature, the cable can be prevented from breaking due to thermal expansion and contraction, so that the wire core 8 and the external material can undergo corresponding changes according to their own performance, thereby improving the service life of the DC cable, and by arranging the rubber protective ring 3, the first support plate 10 and the second support plate 11 on the surface of the rubber protective ring 3 can play a supporting role inside the DC cable, thereby providing corresponding contraction and expansion space, which is convenient for the use of the DC cable.

[0028] Second embodiment

[0029] Please refer to Figure 1-3 Based on a high-voltage DC cable provided by the first embodiment of the present application, the second embodiment of the present application provides another high-voltage DC cable. The second embodiment is only a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0030] Specifically, the second embodiment of the present application provides a high-voltage DC cable that is different in that a first support plate 10 and a second support plate 11 are provided on the outer surface and the inner wall surface of the rubber protective ring 3 , respectively.

[0031] With this technical solution, a filling layer 2 is filled between the rubber protective ring 3 and the wear-resistant insulating layer and the heat-insulating layer 4. The filling layer 2 is glass fiber. By providing the filling layer 2, the fullness of the interior of the cable can be improved to prevent the wire core 8 from shaking inside the cable.

[0032] With this technical solution, a reinforcing core 9 is provided in the middle of the insulating sleeve 6. The reinforcing core 9 is provided to improve the overall strength of the cable.

[0033] By adopting this technical solution, a plurality of first support plates 10 and a plurality of second support plates 11 are provided, and the plurality of first support plates 10 and the second support plates 11 are equidistantly installed around the surface of the rubber protective ring 3. By providing a plurality of first support plates 10 and the second support plates 11, it is convenient to support various positions inside the cable.

[0034] With this technical solution, the first support plate 10 and the second support plate 11 are both made of rubber material. By making the first support plate 10 and the second support plate 11 both of rubber material, they can be integrally formed with the rubber protective ring 3 to further improve the supporting performance for the cable.

[0035] It should be noted that all kinds of components used in this application document are standard parts and can be purchased on the market. The specific connection methods of each part adopt conventional means such as mature bolts, rivets and welding in the existing technology. Machinery, parts and electrical equipment all adopt conventional models in the existing technology. Circuit connections adopt conventional connection methods in the existing technology. Electrical equipment are connected to an external safe power supply, and no specific description is given here.

[0036] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A high voltage DC cable, comprising an insulating wear-resistant layer (1), a rubber protective ring (3), and a heat insulation layer (4), characterized in that: The insulating wear-resistant layer (1) is sleeved on the outside of the rubber protective ring (3), the rubber protective ring (3) is sleeved on the outside of the heat insulation layer (4), an insulating sleeve (6) is arranged inside the heat insulation layer (4), a wire core (8) is arranged inside the insulating sleeve (6), a second insulating carbon black (7) is filled between the insulating sleeve (6) and the wire core (8), and a first insulating carbon black (5) is filled between the heat insulation layer (4) and the insulating sleeve (6).

2. A high voltage DC cable according to claim 1, characterized in that: The outer surface and inner wall surface of the rubber protective ring (3) are respectively provided with a first supporting plate (10) and a second supporting plate (11).

3. A high voltage DC cable according to claim 1, characterized in that: A filling layer (2) is filled between the rubber protective ring (3) and the wear-resistant insulating layer and the heat-insulating layer (4).

4. A high voltage DC cable according to claim 3, characterized in that: The filling layer (2) is glass fiber.

5. A high voltage DC cable according to claim 1, characterized in that: A reinforcing core (9) is arranged at a middle position inside the insulating sleeve (6).

6. A high voltage DC cable according to claim 2, characterized in that: A plurality of the first support plates (10) and the second support plates (11) are provided, and the plurality of first support plates (10) and the second support plates (11) are equidistantly mounted around the surface of the rubber protective ring (3).

7. A high voltage DC cable according to claim 2, characterized in that: The first support plate (10) and the second support plate (11) are both made of rubber material.

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