Cold-resistant and anti-freezing cable for high-speed rail

Abstract

The utility model relates to a cold-resistant and anti-freezing cable for a high-speed rail, which belongs to the field of cables and comprises four cable cores, and a carbon fiber reinforcing rib is arranged in the center of the four cable cores. According to the cold-resistant and anti-freezing cable for the high-speed rail, by arranging the wear-resistant sleeve, the wear resistance of the cable core is improved, meanwhile, the friction coefficient of the cable core can be reduced, damage to the cable core is avoided, the outer side of the protective armor layer becomes smooth by spraying the waterproof coating on the outer side of the protective armor layer, and when rain and snow fall on the protective armor layer, the protective armor layer is prevented from being damaged. Rain and snow can slide off from the cable, the rain and snow can be prevented from gathering and freezing on the cable, the resistance wires are arranged in the cable, the resistance wires can heat the interior of the cable after being electrified, so that the rain and snow are not prone to freezing on the protective armor layer, the resistance wires are distributed in the cable in a bent mode, the number of the resistance wires can be reduced, and the cost is reduced. And meanwhile, the heating effect of the cable is improved, use by a user is facilitated, and the practicability of the cable is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a cold-resistant and frost-proof high-speed railway cable. Background Art

[0002] my country's rapidly developing high-speed rail is building an increasingly dense railway network. As an important carrier of high-speed rail power transmission, the contact network has become the main artery and lifeline of rail transportation. The rapid development of high-speed rail has also made the cable industry need to make special designs based on the characteristics of high-speed rail. It is usually a rope-like cable composed of several or several groups of conductors (at least two in each group). Each group of conductors is insulated from each other and often twisted around a center. The entire outside is wrapped with a highly insulating covering layer. The cable has the characteristics of internal power conduction and external insulation.

[0003] For example, Chinese patent CN213815605U discloses a fire-resistant and moisture-proof high-speed railway cable, including a cable core, an insulating layer bonded to the outer surface of the cable core, a filling material filled in the gap between the cable core and the insulating layer, a waterproof layer bonded to the outer surface of the insulating layer, a pressure-resistant layer bonded to the outer surface of the waterproof layer, a fire-resistant layer bonded to the outer surface of the pressure-resistant layer, the fire-resistant layer includes a chloroprene rubber layer, a mica powder layer bonded to the outer surface of the chloroprene rubber layer, a polyvinyl chloride layer bonded to the outer surface of the mica powder layer, a moisture-proof layer bonded to the outer surface of the fire-resistant layer, the moisture-proof layer includes an EPDM rubber layer, a polyurethane layer bonded to the outer surface of the EPDM rubber layer, a polyethylene layer bonded to the outer surface of the polyurethane layer, a protective layer bonded to the outer surface of the moisture-proof layer, and a corrosion-resistant layer bonded to the outer surface of the protective layer. However, high-speed railway cables in some areas with relatively harsh environments are often faced with the risk of low temperatures. These problems will pose a greater threat to the normal operation of the high-speed railway, and thus seriously threaten the lives of passengers. Therefore, a cold-resistant and antifreeze high-speed railway cable is proposed to solve the above-mentioned problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the utility model provides a cold-resistant and frost-resistant high-speed railway cable, which has the advantages of cold-resistant and frost-resistant, and solves the problem that high-speed railway cables in some areas with relatively harsh environments are often faced with the danger of low temperatures. These problems will pose a great threat to the normal operation of the high-speed railway, and thus seriously threaten the lives of passengers.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cold-resistant and frost-resistant high-speed railway cable, comprising four cable cores, carbon fiber reinforcement ribs are arranged in the center of the four cable cores, insulating layers are bonded to the outsides of the four cable cores, a protective mechanism is arranged on the outside of the cable core, and a protective component is arranged on the outside of the cable core;

[0006] The protection mechanism comprises a heat preservation layer arranged outside the insulating layer, a resistance wire is arranged outside the heat preservation layer, a heat conduction layer is arranged outside the resistance wire, and a protective armor layer is arranged outside the heat conduction layer.

[0007] Furthermore, the protection component includes a wear-resistant sleeve sleeved on the outside of the cable core, and a waterproof coating is provided on the outside of the protective armor layer.

[0008] By adopting the above technical solution, the wear resistance of the cable core can be improved, and at the same time, the friction coefficient of the cable core can be reduced to avoid damage to the cable core.

[0009] Furthermore, the four cable cores are distributed on the periphery of the carbon fiber reinforcement in a centrally symmetrical manner.

[0010] By adopting the above technical solution, the bending resistance of the cable is increased, the cable is prevented from being bent, broken or damaged, and the normal use of the cable is ensured.

[0011] Furthermore, the interior of the insulating layer is filled with a thermal insulation material, and the thermal insulation material is located outside the cable core and the carbon fiber reinforcement ribs.

[0012] By adopting the above technical solution, the thermal insulation material is evenly filled inside the cable, further improving the thermal insulation effect of the cable.

[0013] Furthermore, the thermal insulation layer is made of aerogel material.

[0014] By adopting the above technical solution, the thermal insulation effect of the cable is improved.

[0015] Furthermore, the number of the resistance wires is four and they are distributed in an arc shape on the insulation layer.

[0016] By adopting the above technical solution, the heating area of ​​the cable is increased.

[0017] Furthermore, the waterproof coating is evenly sprayed on the outside of the protective armor layer.

[0018] By adopting the above technical solution, the outer side of the protective armor layer becomes smooth. When rain and snow fall on the protective armor layer, the rain and snow can slide off the cable, preventing the rain and snow from gathering and freezing on the cable.

[0019] Furthermore, the resistance wires are symmetrically distributed between the thermal insulation layer and the heat conducting layer.

[0020] By adopting the above technical solution, the heat generated by the resistance wire is retained inside the cable.

[0021] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0022] The cold-resistant and frost-proof high-speed railway cable improves the wear resistance of the cable core by arranging a wear-resistant sleeve, and can also reduce the friction coefficient of the cable core to avoid damage to the cable core. A waterproof coating is sprayed on the outer side of the protective armor layer to make the outer side of the protective armor layer smooth. When rain and snow fall on the protective armor layer, the rain and snow can slide off the cable to prevent the rain and snow from gathering and freezing on the cable. A resistance wire is arranged inside the cable, and the resistance wire can heat the inside of the cable after being energized, so that rain and snow are not easy to freeze on the protective armor layer. The resistance wire is bent and distributed inside the cable, which can reduce the setting of the resistance wire and increase the heating effect of the cable, thereby facilitating the use of the user and increasing the practicality of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the wear-resistant sleeve of the utility model;

[0025] Figure 3 This is a schematic diagram of the resistance wire structure of the utility model.

[0026] In the figure: 1. Cable core; 2. Carbon fiber reinforcement ribs; 3. Insulation layer; 4. Thermal insulation layer; 5. Resistance wire; 6. Thermal conductive layer; 7. Protective armor layer; 8. Wear-resistant sleeve; 9. Waterproof coating; 10. Thermal insulation material. DETAILED DESCRIPTION

[0027] 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.

[0028] See also Figure 1-3 A cold-resistant and frost-resistant high-speed railway cable in this embodiment includes four cable cores 1, a carbon fiber reinforcement rib 2 is arranged in the center of the four cable cores 1, and the four cable cores 1 are distributed on the periphery of the carbon fiber reinforcement rib 2 in a centrally symmetrical manner. An insulating layer 3 is bonded to the outside of the four cable cores 1, and the inside of the insulating layer 3 is filled with a thermal insulation material 10. The thermal insulation material 10 is located on the outside of the cable core 1 and the carbon fiber reinforcement rib 2, a protective mechanism is arranged on the outside of the cable core 1, and a protective component is arranged on the outside of the cable core 1.

[0029] It should be noted that by providing the carbon fiber reinforcement ribs 2 , the cable core 1 is prevented from breaking or bending, thereby further improving the service life of the cable core 1 .

[0030] See also Figure 1-3 In this embodiment, the protective mechanism includes a thermal insulation layer 4 arranged on the outside of the insulating layer 3, the thermal insulation layer 4 is an aerogel material, a resistance wire 5 is arranged on the outside of the thermal insulation layer 4, the number of the resistance wires 5 is four and they are distributed in an arc shape on the thermal insulation layer 4, a thermal conductive layer 6 is arranged on the outside of the resistance wire 5, the resistance wires 5 are symmetrically distributed between the thermal insulation layer 4 and the thermal conductive layer 6, and a protective armor layer 7 is arranged on the outside of the thermal conductive layer 6.

[0031] It should be noted that the four resistance wires 5 are staggeredly distributed, thereby increasing the contact area of ​​the resistance wires 5 .

[0032] See also Figure 3 In this embodiment, the protective component includes a wear-resistant sleeve 8 sleeved on the outer side of the cable core 1, and a waterproof coating 9 is provided on the outer side of the protective armor layer 7, and the waterproof coating 9 is evenly sprayed on the outer side of the protective armor layer 7.

[0033] It should be noted that, by providing the wear-resistant sleeve 8 , the wear resistance of the cable core 1 is improved, and at the same time, the friction coefficient of the cable core 1 can be reduced, thereby avoiding damage to the cable core 1 .

[0034] The working principle of the above embodiment is:

[0035] The cold-resistant and frost-proof high-speed railway cable has a wear-resistant sleeve 8 sleeved on the outer side of the cable core 1 to improve the wear resistance of the cable core 1, and can also reduce the friction coefficient of the cable core 1, avoid damage to the cable core 1, and increase the service life of the cable core 1. By setting the carbon fiber reinforcement ribs 2, the cable core 1 is prevented from breaking and bending, and the service life of the cable core 1 is further increased. The starting resistance wire 5 is bent and distributed inside the cable, and the heating area is increased while reducing the setting of the resistance wire 5, thereby improving the cold-resistant and frost-proof effect of the cable. By setting the thermal insulation layer 4, a large amount of heat loss is avoided. By setting the heat-conducting layer 6, the heat is transferred to the protective armor layer 7, and the snow and ice on the protective armor layer 7 are heated to melt them to avoid affecting the normal use of the cable. By spraying a waterproof coating 9 on the outer side of the protective armor layer 7, the outer side of the protective armor layer 7 becomes smooth. When rain and snow fall on the protective armor layer 7, the rain and snow can slide off the cable, preventing the rain and snow from gathering and freezing on the cable.

[0036] The beneficial effect of the above embodiment is that the cold-resistant and frost-proof high-speed railway cable improves the wear resistance of the cable core by arranging a wear-resistant sleeve, and can also reduce the friction coefficient of the cable core to avoid damage to the cable core. By spraying a waterproof coating on the outside of the protective armor layer, the outside of the protective armor layer becomes smooth. When rain and snow fall on the protective armor layer, the rain and snow can slide off the cable to prevent rain and snow from gathering and freezing on the cable. By arranging a resistance wire inside the cable, the resistance wire can heat the inside of the cable after being energized, so that rain and snow are not easy to freeze on the protective armor layer. The resistance wire is bent and distributed inside the cable, which can reduce the setting of the resistance wire and increase the heating effect of the cable, thereby facilitating the use of the user and increasing the practicality of the cable.

[0037] The electrical components appearing in the text are all electrically connected to the controller and the power supply. The control method of the utility model is controlled by the controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power supply is also common knowledge in this field. The utility model is mainly used to protect mechanical devices, so the utility model will no longer explain the control method and circuit connection in detail.

[0038] 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. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated 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 that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cold-resistant and frost-resistant high-speed railway cable, comprising four cable cores (1), characterized in that: A carbon fiber reinforcement rib (2) is arranged in the center of the four cable cores (1), an insulating layer (3) is bonded to the outer sides of the four cable cores (1), a protective mechanism is arranged on the outer side of the cable core (1), and a protective component is arranged on the outer side of the cable core (1); The protective mechanism comprises a heat preservation layer (4) arranged outside the insulating layer (3), a resistance wire (5) is arranged outside the heat preservation layer (4), a heat conduction layer (6) is arranged outside the resistance wire (5), and a protective armor layer (7) is arranged outside the heat conduction layer (6).

2. A cold-resistant and frost-resistant high-speed railway cable according to claim 1, characterized in that: The protective component comprises a wear-resistant sleeve (8) sleeved on the outside of the cable core (1), and a waterproof coating (9) is provided on the outside of the protective armor layer (7).

3. The cold-resistant and frost-resistant high-speed railway cable according to claim 1, characterized in that: The four cable cores (1) are distributed on the periphery of the carbon fiber reinforcement rib (2) in a centrally symmetrical manner.

4. The cold-resistant and frost-resistant high-speed railway cable according to claim 1, characterized in that: The interior of the insulating layer (3) is filled with a thermal insulation material (10), and the thermal insulation material (10) is located outside the cable core (1) and the carbon fiber reinforcement ribs (2).

5. The cold-resistant and frost-resistant high-speed railway cable according to claim 1, characterized in that: The thermal insulation layer (4) is made of aerogel material.

6. The cold-resistant and frost-resistant high-speed railway cable according to claim 1, characterized in that: The number of the resistance wires (5) is four and they are distributed in an arc shape on the thermal insulation layer (4).

7. The cold-resistant and frost-resistant high-speed railway cable according to claim 2, characterized in that: The waterproof coating (9) is evenly sprayed on the outer side of the protective armor layer (7).

8. The cold-resistant and frost-resistant high-speed railway cable according to claim 1, characterized in that: The resistance wires (5) are symmetrically distributed between the thermal insulation layer (4) and the heat conducting layer (6).

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