High and low temperature resistant aluminum alloy core flexible cable

Abstract

The utility model discloses a high and low temperature resistant aluminum alloy core flexible cable, which relates to the technical field of core flexible cables and comprises a cable body, an inner lining layer is arranged on the outer side surface of the cable body, a thermal insulation layer is arranged on the outer side surface of the inner lining layer, and a protective layer is arranged on the outer side surface of the thermal insulation layer. A first insulating layer is arranged at the position, close to the circle center, of the lining layer, a second insulating layer is arranged on the surface of the outer side of the first insulating layer, a drying layer is arranged at the position, close to the circle center, of the thermal insulation layer, and a rubber layer is arranged at the position, close to the circle center, of the protective layer. The influence of the external temperature on the cable body can be reduced by arranging the heat insulation layer, and the rigid foam polyurethane is a material produced by adopting a fluoride-free foam technology and can generate thermal reaction, so that the heat insulation performance is improved. Compared with other heat insulation materials, the rigid foam polyurethane has higher foaming thickness and hardness and higher heat conductivity coefficient. Therefore, the rigid foam polyurethane is one of materials with the best heat insulation effect.

Description

Technical Field

[0001] The utility model relates to the technical field of core soft cables, in particular to a high and low temperature resistant aluminum alloy core soft cable. Background Art

[0002] Aluminum alloy power cable is a new type of power cable with AA8030 series aluminum alloy as conductor, special roll-formed wire stranding production process and annealing treatment and other advanced technologies. Alloy power cable makes up for the shortcomings of pure aluminum cable in the past. Although the electrical conductivity of the cable is not improved, the bending performance, creep resistance and corrosion resistance are greatly improved, which can ensure that the cable maintains continuous performance stability when overloaded and overheated for a long time. The use of AA-8030 series aluminum alloy conductor can greatly improve the conductivity and high temperature resistance of aluminum alloy cable, and solve the problems of pure aluminum conductor and creep. The conductivity of aluminum alloy is 61.8% of the most commonly used reference material copper IACS, and the current carrying capacity is 79% of copper, which is better than the pure aluminum standard. However, under the same volume, the actual weight of aluminum alloy is about one-third of copper. Therefore, the weight of aluminum alloy cable is about half of that of copper cable at the same current carrying capacity. Using aluminum alloy cable to replace copper cable can reduce the weight of cable, reduce installation cost, reduce wear of equipment and cable, and make installation easier.

[0003] Traditional aluminum alloy cables have poor resistance to high and low temperatures during use and are easily damaged in hot or cold outdoor conditions. Utility Model Content

[0004] The utility model aims to provide a high and low temperature resistant aluminum alloy core flexible cable, which can solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high and low temperature resistant aluminum alloy core soft cable, comprising a cable body, an inner lining layer is arranged on the outer surface of the cable body, a thermal insulation layer is arranged on the outer surface of the inner lining layer, a protective layer is arranged on the outer surface of the thermal insulation layer, a first insulating layer is arranged near the center of the inner lining layer, a second insulating layer is arranged on the outer surface of the first insulating layer, a drying layer is arranged near the center of the thermal insulation layer, and a rubber layer is arranged near the center of the protective layer.

[0006] Preferably, the first insulating layer is made of cross-linked polyethylene, and the second insulating layer is made of polyethylene.

[0007] Preferably, a waterproof layer is provided on the outer surface of the drying layer, and the waterproof layer is made of fluororubber.

[0008] Preferably, a heat insulation layer is provided at the far center of the temperature insulation layer, and the heat insulation layer is made of rigid foam polyurethane.

[0009] Preferably, a metal protective layer is provided on the outer surface of the rubber layer, and the metal protective layer is made of stainless steel.

[0010] Preferably, a sheath layer is provided at the far center of the protective layer, and the sheath layer is made of polyurethane rubber.

[0011] Preferably, the cable body, the inner lining layer, the thermal insulation layer and the protective layer are tightly fitted together.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model can reduce the influence of external temperature on the cable body by setting a heat insulation layer. Rigid polyurethane foam is a material produced by fluorine-free foam technology, which can produce thermal reaction, thereby improving the heat insulation performance. Compared with other heat insulation materials, rigid polyurethane foam has higher foaming thickness and hardness, and higher thermal conductivity. Therefore, rigid polyurethane foam is one of the materials with the best heat insulation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the inner lining layer of the utility model;

[0016] Figure 3 This is a schematic diagram of the three-dimensional structure of the thermal insulation layer of the utility model;

[0017] Figure 4 This is a schematic diagram of the protective layer structure of the utility model.

[0018] In the figure: 1. cable body; 2. inner lining layer; 21. first insulating layer; 22. second insulating layer; 3. thermal insulation layer; 31. drying layer; 32. waterproof layer; 33. thermal insulation layer; 4. protective layer; 41. rubber layer; 42. metal protective layer; 43. sheath layer. DETAILED DESCRIPTION

[0019] 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 of 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.

[0020] Example 1

[0021] See also Figure 1The figure shows a high and low temperature resistant aluminum alloy core soft cable, including a cable body 1, an inner lining layer 2 is arranged on the outer surface of the cable body 1, a thermal insulation layer 3 is arranged on the outer surface of the inner lining layer 2, a protective layer 4 is arranged on the outer surface of the thermal insulation layer 3, a first insulating layer 21 is arranged near the center of the inner lining layer 2, a second insulating layer 22 is arranged on the outer surface of the first insulating layer 21, a drying layer 31 is arranged near the center of the thermal insulation layer 3, and a rubber layer 41 is arranged near the center of the protective layer 4.

[0022] See also Figure 2 In the figure, the first insulating layer 21 is made of cross-linked polyethylene, and the second insulating layer 22 is made of polyethylene.

[0023] In this embodiment: the current of the cable body 1 can be blocked by the first insulating layer 21 to avoid safety accidents caused by leakage, and the insulation effect can be enhanced by the second insulating layer 22 to avoid leakage caused by failure of the first insulating layer 21. Polyethylene is widely used in cable insulation and outdoor cable sheaths due to its excellent electrical properties, moisture resistance, cold resistance and medium mechanical properties, and cross-linked polyethylene is widely used in the insulation of medium and high voltage cables due to its excellent electrical and mechanical properties.

[0024] Working principle: The first insulating layer 21 can block the current of the cable body 1 to avoid safety accidents caused by leakage, and the second insulating layer 22 can enhance the insulation effect to avoid leakage caused by failure of the first insulating layer 21. Polyethylene is widely used in cable insulation and outdoor cable sheaths due to its excellent electrical properties, moisture resistance, cold resistance and medium mechanical properties, and cross-linked polyethylene is widely used in the insulation of medium and high voltage cables due to its excellent electrical and mechanical properties.

[0025] Example 2

[0026] See also Figure 3 This embodiment further explains Example 1. In the figure, a waterproof layer 32 is provided on the outer surface of the drying layer 31, and the waterproof layer 32 is made of fluororubber.

[0027] In this embodiment: the waterproof layer 32 can prevent water from intruding into the cable body 1 during operation and causing a short circuit in the equipment, and the drying layer 31 can enhance the waterproof effect, and the fluororubber has a good waterproof effect and can adapt to different working temperatures and environments.

[0028] See also Figure 3 As shown in the figure, a heat insulation layer 33 is arranged at the far center of the temperature insulation layer 3, and the heat insulation layer 33 is made of hard foam polyurethane.

[0029] In this embodiment, the effect of external temperature on the cable body 1 can be reduced by providing the heat insulation layer 33. Rigid polyurethane foam is a material produced by fluorine-free foam technology, which can produce thermal reaction, thereby improving the heat insulation performance. Compared with other heat insulation materials, rigid polyurethane foam has higher foaming thickness and hardness, and also has higher thermal conductivity. Therefore, rigid polyurethane foam is one of the materials with the best heat insulation effect.

[0030] See also Figure 4 In the figure, a metal protective layer 42 is provided on the outer surface of the rubber layer 41, and the metal protective layer 42 is made of stainless steel.

[0031] In this embodiment: the metal protective layer 42 can increase its tensile strength to prevent it from tearing when subjected to a large tensile force, and the stainless steel material has the advantages of being rust-resistant and having high tensile strength, which can make the metal protective layer 42 more protective.

[0032] See also Figure 2 In the figure, a sheath layer 43 is provided at the far center of the protective layer 4, and the sheath layer 43 is made of polyurethane rubber.

[0033] In this embodiment, the sheath layer 43 can protect the stability of the wire body under long-term operation, and the polyurethane rubber material has excellent mechanical properties and wear resistance, and can achieve high tensile strength and elastic modulus. It performs well under wear and impact loads and is suitable for making durable parts and tools.

[0034] See also Figure 1 In the figure, the cable body 1, the inner lining layer 2, the thermal insulation layer 3 and the protective layer 4 are tightly fitted together.

[0035] In this embodiment: by arranging the four parts in close contact, the integrity of the cable can be increased, thereby facilitating installation and transportation, and at the same time increasing its service life.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include"-"comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process-method-article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process-method-article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high and low temperature resistant aluminum alloy core flexible cable, comprising a cable body (1), characterized in that: An inner lining layer (2) is provided on the outer surface of a cable body (1), a thermal insulation layer (3) is provided on the outer surface of the inner lining layer (2), a protective layer (4) is provided on the outer surface of the thermal insulation layer (3), a first insulating layer (21) is provided near the center of the inner lining layer (2), a second insulating layer (22) is provided on the outer surface of the first insulating layer (21), a drying layer (31) is provided near the center of the thermal insulation layer (3), and a rubber layer (41) is provided near the center of the protective layer (4).

2. The high and low temperature resistant aluminum alloy core flexible cable according to claim 1, characterized in that: The first insulating layer (21) is made of cross-linked polyethylene, and the second insulating layer (22) is made of polyethylene.

3. The high and low temperature resistant aluminum alloy core flexible cable according to claim 1, characterized in that: The outer surface of the drying layer (31) is provided with a waterproof layer (32), and the waterproof layer (32) is made of fluororubber.

4. The high and low temperature resistant aluminum alloy core flexible cable according to claim 1, characterized in that: A heat insulation layer (33) is provided at the far center of the temperature insulation layer (3), and the heat insulation layer (33) is made of rigid foam polyurethane material.

5. The high and low temperature resistant aluminum alloy core flexible cable according to claim 1, characterized in that: The outer surface of the rubber layer (41) is provided with a metal protective layer (42), and the metal protective layer (42) is made of stainless steel.

6. The high and low temperature resistant aluminum alloy core flexible cable according to claim 1, characterized in that: A sheath layer (43) is provided at the far center of the protective layer (4), and the sheath layer (43) is made of polyurethane rubber.

7. The high and low temperature resistant aluminum alloy core flexible cable according to claim 1, characterized in that: The cable body (1), the inner lining layer (2), the thermal insulation layer (3) and the protective layer (4) are tightly fitted together.

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