Low-temperature-resistant three-core super-flexible cable

Abstract

The utility model relates to the technical field of cables, and provides a low-temperature-resistant three-core super-flexible cable which comprises a wire core, a flexible support and an inner protection layer, and the wire core is composed of a plurality of flexible wires, a mica layer and a shielding layer; the three corners of the flexible support are fixedly connected with the inner protection layer, the flexible support divides the inner protection layer into three independent cavities, the wire cores are located in the independent cavities, and the space between the flexible support and the inner protection layer is filled with a filling layer used for fixing the wire cores; and a thermal insulation layer and a cable protection layer are sequentially arranged on the outer wall of the inner protection layer. Through the arrangement of the multiple strands of flexible wires, the load which can be borne by the cable is not reduced while the internal part of the cable is flexible, and the internal part is not provided with other metals except for the shielding layer and the multiple strands of flexible wires, so that the metal is prevented from generating a metal fatigue effect after the metal is bent at a low temperature and multiple times to cause metal fracture, and the influence on other facilities is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of cable technology, specifically relating to a low-temperature resistant three-core ultra-flexible cable. Background Technology

[0002] Wires and cables are wire products used to transmit electrical (magnetic) energy, information, and realize the conversion of electromagnetic energy. In a broad sense, wires and cables are also simply referred to as cables. In a narrow sense, cables refer to insulated cables, which can be defined as: an assembly consisting of one or more insulated conductors, and their respective possible coverings, overall protective layers, and outer sheaths. Cables may also have additional uninsulated conductors.

[0003] A known authorized patent with application number 201821280473.1 discloses a low-temperature resistant three-core ultra-flexible cable: It includes an inner cable sheath and a core. The core is fixed within the inner cavity of the inner cable sheath. A silicone rubber support is fixed to one side of the core within the inner cavity of the inner cable sheath. A fiberglass rope is filled between the core and the silicone rubber support. A steel wire passes through the inner cavity of the silicone rubber support. A low-temperature resistant layer is fixedly connected to the outer ring of the inner cable sheath. A silicone sleeve is fixed to the outer ring of the low-temperature resistant layer. Nylon filaments pass through the inner cavity of the silicone sleeve. A cable sheath is fixed to the outer ring of the silicone sleeve. The core consists of copper wire, mica tape, and a shielding layer from the inside out. This utility model has a reasonable and novel design. The cable possesses excellent low-temperature resistance and high flexibility. It also has good pulling ability, a long service life, and is not easily broken or corroded, making it suitable for a wide range of environments and highly practical.

[0004] However, during the implementation of the relevant technology, the following problems were found with the above technical solution: When in use, due to the presence of internal steel wires, the flexibility during bending is limited. After prolonged and repeated bending, the internal metal is prone to fatigue and breakage, which may damage other parts of the cable.

[0005] Therefore, a low-temperature resistant three-core ultra-flexible cable is proposed to solve the above problems. Utility Model Content

[0006] This utility model proposes a low-temperature resistant three-core ultra-flexible cable, which solves the problem in related technologies where the presence of internal steel wires limits the flexibility during bending, and after prolonged and repeated bending, the internal metals are prone to fatigue and breakage, potentially damaging other parts of the cable.

[0007] The technical solution of this utility model is as follows: a low-temperature resistant three-core ultra-flexible cable, comprising: a core, a flexible support and an inner protective layer, wherein the core is composed of multiple flexible wires, a mica layer and a shielding layer;

[0008] The flexible bracket is fixedly connected to the inner protective layer, and the flexible bracket divides the inner protective layer into three independent chambers. The wire core is located inside the independent chambers, and a filler layer for fixing the wire core is filled between the flexible bracket and the inner protective layer.

[0009] The outer wall of the inner protective layer is provided with an insulation layer and a cable protection layer in sequence.

[0010] Preferably, the outer wall of the multi-strand flexible wire is wrapped with a mica layer, and the outer wall of the mica layer is wrapped with a shielding layer.

[0011] Preferably, the filler layer separates the wire core from the inner protective layer.

[0012] Preferably, the inner protective layer and the cable protective layer have the same structure and material, and both are low-temperature resistant silicone.

[0013] Preferably, the multi-strand flexible wire is made of multiple thin copper wires wound together.

[0014] The working principle and beneficial effects of this utility model are as follows:

[0015] By using multiple flexible wires, the cable's internal structure can maintain flexibility without reducing its load-bearing capacity. By eliminating the presence of any other metal components besides the shielding layer and the multiple flexible wires, metal fatigue caused by low temperatures and repeated bending can be avoided, preventing metal breakage and potential damage to other components. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a schematic cross-sectional view of the structure proposed in this utility model;

[0018] Figure 2 A cross-sectional structural diagram of the wire core is provided for this utility model;

[0019] Figure 3 A cross-sectional three-dimensional structural diagram of the flexible support proposed in this utility model is provided.

[0020] In the diagram: 1. Core wire; 101. Multi-strand flexible wire; 102. Mica layer; 103. Shielding layer; 2. Flexible support; 3. Filling layer; 4. Inner protective layer; 5. Insulation layer; 6. Cable protection layer. Detailed Implementation

[0021] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0022] Implementation

[0023] Please see Figure 1 -3, Low-temperature resistant three-core ultra-flexible cable, including: core 1, flexible support 2 and inner protective layer 4, core 1 is composed of multiple flexible wires 101, mica layer 102 and shielding layer 103;

[0024] The triangle of the flexible bracket 2 is fixedly connected to the inner protective layer 4, and the flexible bracket 2 divides the inner protective layer 4 into three independent chambers. The wire core 1 is located inside the independent chambers, and the space between the flexible bracket 2 and the inner protective layer 4 is filled with a filling layer 3 for fixing the wire core 1.

[0025] The outer wall of the inner protective layer 4 is provided with an insulation layer 5 and a cable protection layer 6 in sequence.

[0026] The technical solution provided in this embodiment is as follows: During manufacturing, a mica layer and a shielding layer are first wrapped around the outside of the multi-strand flexible wires. Mica tape is a high-performance mica insulation product with excellent high-temperature resistance and flame retardancy. The outer shielding layer prevents the radiation generated by the three wire cores 1 from affecting each other. Then, a flexible bracket 2 is set to fix the three wire cores 1 relatively. Next, an inner protective layer 4 is set on the outer layer of the flexible bracket 2. Low-temperature resistant silicone rubber has excellent flexibility and bending resistance at low temperatures. Then, a filling layer 3 is set in the gaps of the inner protective layer 4. The filling layer 3 is made of glass fiber, which provides better fire resistance and flexibility at low temperatures for the cable. The insulation layer 5 outside the inner protective layer 4 is made of polyurethane soft foam, which provides a certain insulation capacity for the cable without affecting the flexibility of the equipment. The outer side of the insulation layer 5 is the cable protection layer 6. The cable protection layer 6 is made of the same low-temperature resistant silicone rubber as the inner protective layer 4, so that the outermost layer of the cable also has flexible characteristics.

[0027] Furthermore, the outer wall of the multi-strand flexible wire 101 is wrapped with a mica layer 102, and the outer wall of the mica layer 102 is wrapped with a shielding layer 103.

[0028] Specifically, by setting the mica layer 102 and the shielding layer 103, the radiation generated by the core 1 during operation will not affect the other cables, and the mica layer has a certain fire resistance, which improves the fire resistance of the cable.

[0029] Furthermore, the filler layer 3 separates the wire core 1 from the inner protective layer 4.

[0030] Specifically, the filler layer 3 separates the conductor 1 from the outer structure, so that it will not directly affect the conductor 1 in the event of a fire or other incident, allowing the cable to continue operating for a period of time in an emergency.

[0031] Furthermore, the cable protection layer 6 is internally wrapped with an insulation layer 5, and the inner wall of the insulation layer 5 is wrapped with an inner protective layer 4. The insulation layer 5 is located between the cable protection layer and the inner protective layer.

[0032] Specifically, by setting up the insulation layer 5, the temperature of the core 1 of the cable is prevented from dropping too quickly in low-temperature environments, thus avoiding the impact of low temperature on power transmission.

[0033] Furthermore, the inner protective layer 4 and the cable protective layer 6 have the same structure and material, and both are made of low-temperature resistant silicone.

[0034] Specifically, the low-temperature resistant silicone rubber has excellent flexibility and low-temperature resistance, which enables the inner protective layer 4 and the cable protective layer 6 to also have excellent ultra-flexible properties at low temperatures.

[0035] Furthermore, the multi-strand flexible wire 101 is made of multiple strands of finer copper wire wound together.

[0036] Specifically, by winding multiple strands of flexible wire 101, it can improve the flexibility and fatigue resistance of applications where frequent movement is required, such as robotic arms and automated production lines.

[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. Low-temperature resistant three-core ultra-flexible cable, including: The wire core (1), flexible support (2) and inner protective layer (4) are characterized in that the wire core (1) is composed of multiple flexible wires (101), mica layer (102) and shielding layer (103); The triangle of the flexible bracket (2) is fixedly connected to the inner protective layer (4), and the flexible bracket (2) divides the inner protective layer (4) into three independent chambers. The wire core (1) is located inside the independent chambers. The flexible bracket (2) and the inner protective layer (4) are filled with a filling layer (3) for fixing the wire core (1). The outer wall of the inner protective layer (4) is provided with a heat insulation layer (5) and a cable protection layer (6) in sequence.

2. The low-temperature resistant three-core ultra-flexible cable according to claim 1, characterized in that: The outer wall of the multi-strand flexible wire (101) is wrapped with a mica layer (102), and the outer wall of the mica layer (102) is wrapped with a shielding layer (103).

3. The low-temperature resistant three-core ultra-flexible cable according to claim 1, characterized in that: The filling layer (3) separates the wire core (1) from the inner protective layer (4).

4. The low-temperature resistant three-core ultra-flexible cable according to claim 1, characterized in that: The cable protection layer (6) is wrapped with an insulation layer (5), and the inner wall of the insulation layer (5) is wrapped with an inner protective layer (4). The insulation layer (5) is located between the cable protection layer and the inner protective layer.

5. The low-temperature resistant three-core ultra-flexible cable according to claim 1, characterized in that: The inner protective layer (4) and the cable protective layer (6) have the same structure and material, and both are low-temperature resistant silicone.

6. The low-temperature resistant three-core ultra-flexible cable according to claim 1, characterized in that: The multi-strand flexible wire (101) is made of multiple strands of fine copper wire wound together.

Images