Compact anti-interference low-voltage variable frequency cable

Abstract

The utility model discloses a compact anti-interference low-voltage frequency conversion cable, and relates to the field of low-voltage frequency conversion cables. The optical cable comprises a cable body and a cable core, the cable body comprises an outer protective layer, an optical fiber layer is arranged on the inner side of the outer protective layer, and a light guide sheet is connected to one end of the optical fiber layer and used for being connected with a power source and optical fiber detection equipment. The optical fiber layer at the end of the cable can emit light beams with identifiability, so that each cable has a unique identifier, and an operator can quickly and accurately identify the cable needing to be butted according to the light beam information emitted by the optical fibers during cable butting operation, so that the cable butting operation efficiency is greatly improved. Therefore, the tedious step of taking a lot of time to select the corresponding cable in the traditional operation process is avoided, the convenience of cable connection is greatly improved, the possibility of misoperation is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of low - voltage frequency - conversion cables, in particular to a compact anti - interference low - voltage frequency - conversion cable. Background Technique

[0002] Low - voltage frequency - conversion cables are important power transmission lines connecting frequency - conversion power supplies and frequency - conversion motors. Their rated voltage is 1 kV and below, and they are applicable to multiple fields such as buildings and rail transit. They have good flexibility and reliability, and are composed of conductors, insulators, and outer sheaths. They can effectively resist high temperatures and voltage fluctuations in frequency - conversion power transmission. When selecting low - voltage frequency - conversion cables, factors such as voltage level, cable structure, durability, heat resistance, and installation environment need to be comprehensively considered to ensure the performance and service life of the cables, while reducing electromagnetic interference, thereby ensuring the stability and safety of power transmission.

[0003] In the current cable connection and installation process, it is usually necessary to connect multiple cables simultaneously. However, there is a problem in this process: due to the large number of cables to be connected, when making pairwise connections, workers often need to spend a lot of time carefully selecting the corresponding cables and making accurate connections. This not only increases the complexity of the operation but also significantly reduces the convenience of cable connection, affecting the overall work efficiency. Content of the Utility Model

[0004] Based on this, the purpose of the utility model is to provide a compact anti - interference low - voltage frequency - conversion cable to solve the technical problem that when multiple cables are connected and pairwise connection is required, it takes a long time to pick out the corresponding cables and make connections.

[0005] To achieve the above - mentioned purpose, the utility model provides the following technical solution: A compact anti - interference low - voltage frequency - conversion cable includes a cable main body and a core. The cable main body includes an outer protective layer. An optical fiber layer is arranged inside the outer protective layer. One end of the optical fiber layer is connected with a light - guiding sheet for connecting a power supply and an optical fiber detection device.

[0006] By adopting the above - mentioned technical solution, the light - guiding sheet is connected to an external light source, and the optical fiber layer at the cable end can emit a recognizable light beam. This light - emitting characteristic of the optical fiber layer provides a unique identifier for each cable. When operators perform cable connection tasks, they can quickly and accurately identify and select the cables to be connected based on the information of these recognizable light beams.

[0007] Furthermore, the optical fiber layer includes multiple optical fibers, and they are arranged in an equidistant circular pattern along the central axis of the outer protective layer.

[0008] By adopting the above technical solution, the uniform spatial distribution between the optical fibers is ensured. This arrangement optimizes the transmission efficiency of optical signals because the uniformly distributed optical fibers can reduce the interference between signals and improve the stability and reliability of data transmission.

[0009] Furthermore, a flame retardant layer is provided inside the optical fiber layer.

[0010] By adopting the above technical solution, the flame retardant layer significantly improves the safety of the cable. The flame retardant layer is made of a flame-retardant material and can effectively prevent the spread of fire when the cable encounters a fire source, thus buying precious time for timely fire extinguishing and personnel evacuation.

[0011] Furthermore, an anti-interference layer is provided inside the flame retardant layer, and a shielding layer is provided inside the anti-interference layer.

[0012] By adopting the above technical solution, the anti-interference layer and the shielding layer jointly improve the anti-interference ability of the cable. The anti-interference layer can effectively reduce the influence of external electromagnetic interference on the cable signal transmission and ensure the stability and accuracy of the signal.

[0013] Furthermore, an insulating layer is provided inside the shielding layer, and a braided layer is provided inside the insulating layer.

[0014] By adopting the above technical solution, the insulating layer ensures the safe insulation of the internal circuit of the cable, effectively prevents the occurrence of current leakage or short circuit phenomena, and improves the safety of cable use.

[0015] Furthermore, an aluminum foil layer is provided inside the braided layer, and a filling layer is provided between the aluminum foil layer and the wire core.

[0016] By adopting the above technical solution, the aluminum foil layer has good electrical conductivity and shielding effectiveness, can effectively prevent the penetration of electromagnetic waves, provides additional electromagnetic protection for the wire core, and ensures that the signal transmission is not affected by external electromagnetic interference.

[0017] In summary, the present utility model mainly has the following beneficial effects:

[0018] 1. Through the optical fiber layer, the present utility model connects the light guide plate with the external light source. The optical fiber layer at the cable end can emit a recognizable light beam, making use of the characteristic of optical fiber to conduct light, so that each cable has its own unique "identifier". When performing cable docking operations, the operator can quickly and accurately identify the cable to be docked only according to the light beam information emitted by these optical fibers, thus avoiding the cumbersome steps of spending a lot of time selecting the corresponding cable in the traditional operation process. This not only greatly improves the convenience of cable connection, but also reduces the possibility of operation errors and improves the work efficiency;

[0019] 2. By providing an optical fiber layer in the present utility model, when the light guide plate is connected to an external optical fiber break detector, this cable demonstrates its advantages in maintenance. Using the optical fiber break detector, the break points in the outer protective layer of the cable structure can be quickly detected. This ability to quickly locate the fault points is of great significance for promptly repairing the cable and ensuring the stable operation of the power system. At the same time, it also greatly improves the maintenance convenience of the cable, reducing the maintenance cost and time cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic cross-sectional structure diagram of the present utility model;

[0021] Figure 2 of the present utility model Figure 1 is a schematic structure diagram at position A in

[0022] In the figure: 1. Cable main body; 101. Outer protective layer; 102. Optical fiber layer; 103. Flame retardant layer; 104. Anti-interference layer; 105. Shielding layer; 106. Insulating layer; 107. Braided layer; 108. Aluminum foil layer; 2. Core; 3. Filling layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as limiting the present utility model.

[0024] Next, the embodiments of the present utility model will be described according to its overall structure.

[0025] Embodiment 1:

[0026] A compact anti-interference low-voltage frequency conversion cable, as Figure 1 - Figure 2 shown, includes a cable main body 1 and a core 2. The cable main body 1 includes an outer protective layer 101. An optical fiber layer 102 is provided inside the outer protective layer 101. One end of the optical fiber layer 102 is connected with a light guide plate for connecting a power source and an optical fiber detection device. Connecting the light guide plate to an external light source, the optical fiber layer 102 at the cable end can emit a recognizable light beam. This light-emitting characteristic of the optical fiber layer 102 provides a unique identifier for each cable. When operating personnel perform cable docking tasks, they can quickly and accurately identify and select the cables to be docked based on this recognizable light beam information. At the same time, it effectively avoids the cumbersome steps of spending a lot of time and effort to carefully select the corresponding cables in the traditional docking operation process. This not only significantly improves the convenience of cable connection, but also greatly improves the work efficiency and reduces the risk of operation errors by simplifying the docking process.

[0027] Example Two:

[0028] Refer to Figure 1 and Figure 2 , the optical fiber layer 102 includes multiple optical fibers, and they are arranged in an equidistant circular pattern along the central axis of the outer protective layer 101, ensuring a uniform spatial distribution among the optical fibers. This arrangement optimizes the transmission efficiency of optical signals because evenly distributed optical fibers can reduce interference between signals, improving the stability and reliability of data transmission. At the same time, the equidistant circular arrangement also helps to enhance the structural stability of the cable. The uniform distribution of optical fibers enables the cable to disperse pressure more evenly when subjected to external forces, reducing the occurrence of local stress concentration, thereby improving the durability and service life of the cable, and also facilitating maintenance and repair because the positions of the optical fibers are fixed and orderly, allowing for quick positioning of specific optical fibers for processing.

[0029] Refer to Figure 1 and Figure 2 , a flame retardant layer 103 is provided inside the optical fiber layer 102. The flame retardant layer 103 significantly improves the safety of the cable. The flame retardant layer 103 is made of a flame-retardant material and can effectively prevent the spread of fire when the cable encounters a fire source, buying precious time for timely fire extinguishing and personnel evacuation. At the same time, the flame retardant layer 103 also enhances the high-temperature resistance of the cable. In a high-temperature environment, the flame-retardant material can remain stable and will not decompose to produce harmful gases due to high temperature, thereby protecting the internal structure and transmission performance of the cable from damage.

[0030] Refer to Figure 1 and Figure 2 , an anti-interference layer 104 is provided inside the flame retardant layer 103, and a shielding layer 105 is provided inside the anti-interference layer 104. The anti-interference layer 104 and the shielding layer 105 together improve the anti-interference ability of the cable. The anti-interference layer 104 can effectively reduce the influence of external electromagnetic interference on the signal transmission of the cable, ensuring the stability and accuracy of the signal. At the same time, the shielding layer 105 further enhances the electromagnetic shielding effect of the cable, preventing electromagnetic leakage and the intrusion of external electromagnetic waves, protecting the purity and confidentiality of the internal signals of the cable. This double-layer protection design enables the cable to maintain stable and efficient signal transmission in a complex electromagnetic environment, improving the reliability and durability of the cable and meeting the requirements of modern electronic devices for high-quality signal transmission.

[0031] Refer to Figure 1 and Figure 2, an insulating layer 106 is provided on the inner side of the shielding layer 105, and a braided layer 107 is provided on the inner side of the insulating layer 106. The insulating layer 106 ensures the safe insulation of the internal circuit of the cable, effectively preventing current leakage or short - circuit phenomena, and improving the safety of cable use. At the same time, the braided layer 107 on the inner side of the insulating layer 106 enhances the tensile strength and abrasion resistance of the cable, making the cable more durable and extending its service life. The braided layer 107 can also provide an additional shielding effect, acting together with the shielding layer 105 to further reduce electromagnetic interference and ensure the stability of signal transmission.

[0032] Refer to Figure 1 、 Figure 2 , an aluminum foil layer 108 is provided on the inner side of the braided layer 107, and a filling layer 3 is provided between the aluminum foil layer 108 and the wire core 2. The aluminum foil layer 108 has good electrical conductivity and shielding efficiency, and can effectively prevent the penetration of electromagnetic waves, providing additional electromagnetic protection for the wire core 2 to ensure that signal transmission is not affected by external electromagnetic interference. At the same time, the filling layer 3 between the aluminum foil layer 108 and the wire core 2 plays a buffering and supporting role. It can reduce the movement of the wire core when bent or subjected to external forces, thus maintaining the stability of the cable structure. In addition, the filling layer 3 can also absorb external impacts, providing a certain degree of mechanical protection for the wire core to prevent the wire core from being damaged.

[0033] The implementation principle of the present utility model is as follows: First, by connecting the light - guiding sheet to an external light source, the end - head optical fiber layer 102 of the cable emits a recognizable light beam. According to the corresponding optical fiber beam information, these two cables are docked, which is conducive to avoiding the operation of spending time selecting the corresponding cable in the traditional operation process, thereby improving the connection convenience of the cable;

[0034] First, connect the light - guiding sheet to an external optical fiber break detector. The detector can detect the break points of the outer protective layer 101 in the cable structure, achieving the purpose of rapid repair and detection and improving the repair and detection convenience of the cable.

[0035] Parts not involved in the present utility model are the same as or can be implemented using existing technologies, and will not be elaborated here.

[0036] Although the embodiments of the present utility model have been shown and described, the specific embodiments are only explanations of the present utility model, and they are not limitations of the utility model. The specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions, and variations that do not contribute creatively to the embodiments according to needs, but as long as they are within the scope of the claims of the present utility model, they are protected by the patent law.

Claims

1. A compact anti-interference low-voltage frequency conversion cable, characterized in that: The invention comprises a cable body (1) and a wire core (2), wherein the cable body (1) comprises an outer protective layer (101), an optical fiber layer (102) is arranged on the inner side of the outer protective layer (101), and a light guide is connected to one end of the optical fiber layer (102) for connecting a power source and an optical fiber detection device.

2. The compact anti-interference low-voltage frequency conversion cable according to claim 1 is characterized in that: The optical fiber layer (102) comprises a plurality of optical fibers, which are arranged in an equidistant annular pattern along the central axis of the outer protective layer (101).

3. The compact anti-interference low-voltage frequency conversion cable according to claim 1 is characterized in that: A flame retardant layer (103) is provided inside the optical fiber layer (102).

4. The compact anti-interference low-voltage frequency conversion cable according to claim 3 is characterized in that: An anti-interference layer (104) is arranged on the inner side of the flame-retardant layer (103), and a shielding layer (105) is arranged on the inner side of the anti-interference layer (104).

5. The compact anti-interference low-voltage frequency conversion cable according to claim 4 is characterized in that: An insulating layer (106) is arranged on the inner side of the shielding layer (105), and a braided layer (107) is arranged on the inner side of the insulating layer (106).

6. The compact anti-interference low-voltage frequency conversion cable according to claim 5 is characterized in that: An aluminum foil layer (108) is provided on the inner side of the braided layer (107), and a filling layer (3) is provided between the aluminum foil layer (108) and the wire core (2).

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